CN115085075A - Draw-out type low-voltage switch cabinet - Google Patents

Abstract

The invention discloses a draw-out type low-voltage switch cabinet, which relates to the technical field of low-voltage switch cabinets and comprises a switch cabinet main body, a drawer mounting groove and a reserved groove which are respectively arranged along the height direction of one side and the edge of the switch cabinet main body at equal intervals, a push-pull mechanism which is rotatably assembled in the drawer mounting groove, and a drawer main body which is assembled at the top of the push-pull mechanism. According to the drawer body, when an electrical element in the drawer body has a short-circuit fault, the plug and the mortise lock are immediately disconnected, the locking state of the drawer body is released, meanwhile, the sliding rail supporting plate is inclined, the drawer body slowly slides out of the drawer mounting groove to be opened, a maintainer can quickly and accurately find the drawer with the fault, the end, close to the drawer body, of the sliding rail supporting plate is tilted upwards by pressing the rocker by a user, the lifting body can be quickly slid and reset by slightly pushing the rocker, and the labor intensity of the user is greatly reduced.

Description

Draw-out type low-voltage switch cabinet

Technical Field

The invention relates to the technical field of low-voltage switch cabinets, in particular to a draw-out type low-voltage switch cabinet.

Background

The low-voltage switch cabinet is suitable for industries such as power plants, petroleum, chemical industry, metallurgy, textile, high-rise buildings and the like. The main function of the system is to open and close, control and protect the electric equipment in the process of generating, transmitting, distributing and converting electric energy in the electric power system. The types of low-voltage switch cabinets are various: the draw-out switch cabinet is a functional unit which can complete a certain type of power supply task and is more flexible to operate and more convenient to overhaul and maintain compared with the fixed or welded switch cabinet.

In prior art, when short-circuit fault appears in the inside electric elements of current part pull-out type low-voltage switchgear, its inside circuit is difficult to in time break off to make the high temperature at short circuit position easily natural, or influence other electric elements's life, and the user is opening or close the drawer in-process, and great comparatively hard because of the weight of drawer, the part that easily causes supplementary pull appears serious wearing and tearing, and reduces its life and increases the maintenance replacement cost in later stage.

Disclosure of Invention

The invention aims to provide a draw-out type low-voltage switch cabinet, which aims to solve the problems that when an electrical element in the low-voltage switch cabinet provided in the background technology has a short-circuit fault, the power is difficult to be cut off in time, so that the electrical element is easy to have a natural phenomenon or influence the service life of other electrical elements, and the wear of parts for assisting drawing is aggravated due to the fact that a drawer is large, and the maintenance and replacement cost is increased in the later period.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a draw-out type low-voltage switch cabinet which comprises a switch cabinet main body, drawer mounting grooves and reserved grooves which are respectively formed in the height direction of one side and the edge of the switch cabinet main body at equal intervals, a push-pull mechanism rotatably assembled in the drawer mounting grooves, and a drawer main body assembled at the top of the push-pull mechanism, wherein the drawer main body comprises a drawer body assembled at the top of the push-pull mechanism, a partition plate is fixedly assembled in the drawer body, two sides of the partition plate and the inner wall of the drawer body respectively form a circuit connection cavity and an electric distribution cavity in a surrounding mode, and a wire embedding groove is formed in the inner wall of the drawer body.

The push-pull mechanism comprises a support shaft fixedly assembled inside the drawer mounting groove, a slide rail supporting plate rotatably assembled on the outer wall of the support shaft, bar-shaped grooves transversely formed in two sides of the slide rail supporting plate, a first pneumatic telescopic rod fixedly assembled inside the reserved groove, and a second pneumatic telescopic rod fixedly assembled on the inner wall of the drawer mounting groove, wherein the top end of the second pneumatic telescopic rod is assembled inside the bar-shaped grooves, the bottom end inside the first pneumatic telescopic rod is communicated with the inside of the second pneumatic telescopic rod through a connecting pipe, a lower pressing rod is assembled inside the reserved groove in a rotating mode, a sliding groove is formed in one end, close to the first pneumatic telescopic rod, of the lower pressing rod, and the top end of the first pneumatic telescopic rod is arranged inside the sliding groove in a sliding mode.

The inside vertical installation of drawer main part has automatic outage mechanism, automatic outage mechanism is including assembling at the socket of drawer mounting groove inner wall one side, fixed assembly at the inside integrated shell of circuit connection intracavity and assembling at the pressure spring and the plug on the inside top of integrated shell, the guide way has all been seted up to the both sides of integrated shell inner wall, the both sides of plug are all fixed to be equipped with spacing inserted block.

The inside fixed outage trigger mechanism that is equipped with of drawer main part, outage trigger mechanism includes fixed assembly at the first shunt and the second shunt of one side and the bottom of the electrical arrangement intracavity wall, fixed assembly at the sealed piston cover of electrical arrangement intracavity wall bottom and the vertical first telescopic link of assembling in the circuit connection intracavity portion, the inside bottom of first telescopic link is through dredging the inside intercommunication of pipe with first shunt, the inside both ends of sealed piston cover are respectively through dredging the inside intercommunication of pipe with first shunt and second shunt.

Further, the bottom of the two sides of the outer wall of the drawer body is fixedly connected with drawer sliding rails, and the top and the bottom of each drawer sliding rail are movably assembled on the two sides of the inner portion of the corresponding sliding rail supporting plate.

Furthermore, the inside symmetry of plug is equipped with spacing hook, and adjacent two the top that spacing hook opposite face all articulates there is the connecting rod, two the looks remote site of connecting rod all articulates with the pendant of lifting rope one end, the top of plug is fixed to be equipped with the hawser, the one end of hawser runs through the top of integrated shell and extends to its outside, and the one end interlude of hawser is in the inside of burying the wire casing.

Furthermore, one end of the lifting rope is bolted to one end of the mooring rope, one end of the limiting insertion block penetrates through the inside of the guide groove and extends to the outside of the guide groove, limiting insertion holes are formed in the two ends of the top of the socket, the shape of the inside of the limiting insertion holes is matched with the shape of one end of the limiting insertion block, and a limiting column is fixedly arranged on the top of the socket.

Further, a sealing partition plate is fixedly arranged at one third of the inner part of the sealing piston sleeve, a double-end piston is movably sleeved in the sealing piston sleeve, and the middle of the double-end piston is inserted in the center of the sealing partition plate.

Furthermore, one end of the interior of the second adapter is communicated with the bottom end of the interior of the second pneumatic telescopic rod through a gas guide tube.

Furthermore, a tightening mechanism is assembled inside the front side plate of the drawer body and comprises an assembly groove formed inside the front side plate of the drawer body, a handle shaft is rotatably connected to the center of the interior of the assembly groove, a take-up pulley and a ratchet wheel are fixedly assembled in the middle of the outer wall of the handle shaft, and a spring groove is formed in the top of the inner wall of the assembly groove.

Further, the top fixedly connected with reset spring of spring inslot wall, reset spring's bottom fixedly connected with stopper, the top activity of stopper cup joints in the inside of spring inslot, the top fixedly connected with stay cord of stopper.

Furthermore, one end of the pull rope sequentially penetrates through the top of the inner wall of the spring groove and the outer wall of the drawer body and extends to the outside of the spring groove, and a finger ring is bolted to one end of the pull rope.

Furthermore, one end of the mooring rope sequentially penetrates through the wire embedding groove and extends into the assembling groove, and one end of the mooring rope is fixedly connected with the middle of the inside of the take-up pulley.

Compared with the prior art, the above one or more technical schemes have the following beneficial effects:

through the mutual cooperative work of the mechanisms, when the electric element in the drawer body has a short circuit fault, the instant shoveled ultrahigh temperature generated at the short circuit moment of the electric element can be fully utilized to evaporate the liquid in the sealed piston shell into gas instantly, the first telescopic rod is driven to contract to pull the cable, so that the plug and the mortise lock are separated immediately and the locking state of the drawer main body is released, meanwhile, the second air pressure telescopic rod is driven to extend to jack up one end of the sliding rail supporting plate, so that the sliding rail supporting plate is inclined and the drawer main body slowly slides out of the drawer mounting groove to be opened, a circuit is cut off in time, the natural problem of the electric element caused by the short circuit is avoided, the service life of other electric elements can be prevented from being influenced, a maintainer can quickly and accurately find the drawer with the fault, and after steam in the power-off trigger mechanism is cooled, the user is through pushing down the extension of the first atmospheric pressure telescopic link of rocker drive to make the shrink of first atmospheric pressure telescopic link drive second atmospheric pressure telescopic link, make the one end upwarping slope that the slide rail layer board is close to the drawer main part, promote gently that can make to say that the main part slides fast and resets, very big alleviate user's intensity of labour, and alleviate part wearing and tearing speed, the life of extension spare part reduces the maintenance replacement cost in later stage.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic structural view of a main body of a switchgear of the present invention;

FIG. 2 is a schematic structural view of a drawer main body according to the present invention;

FIG. 3 is a schematic structural view of the push-pull mechanism of the present invention;

FIG. 4 is a schematic view of a half-section of a drawer body according to the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is an enlarged schematic view of portion B of FIG. 4;

FIG. 7 is a schematic view of a partial cross-sectional structure of the automatic power-off mechanism of the present invention;

fig. 8 is an enlarged schematic view of a portion C in fig. 7.

In the figure:

1. a switch cabinet main body; 2. a drawer mounting groove; 3. reserving a groove; 4. a push-pull mechanism; 5. an air duct; 6. a drawer main body; 7. an automatic power-off mechanism; 8. a cable; 9. a tightening mechanism; 10. a power-off trigger mechanism;

41. a slide rail supporting plate; 42. a drawer slide; 43. a first pneumatic telescoping rod; 44. a rocker; 45. a chute; 46. a connecting pipe; 47. a second pneumatic telescopic rod; 48. a strip-shaped groove; 49. a support shaft;

61. a drawer body; 62. a partition plate; 63. a circuit connection cavity; 64. an electrical routing cavity; 65. burying a wire groove;

701. an integrated shell; 702. a socket; 703. a limiting column; 704. a pressure spring; 705. a guide groove; 706. a plug; 707. a limiting hook; 708. a connecting rod; 709. a lifting rope; 710. limiting the inserting block; 711. limiting the jacks; 712. a limiting groove;

91. assembling a groove; 92. a grip shaft; 93. a take-up pulley; 94. a ratchet wheel; 95. a spring slot; 96. a return spring; 97. a limiting block; 98. pulling a rope;

101. a first telescopic rod; 102. a first tap; 103. a second tap; 104. a sealed piston sleeve; 105. sealing the partition plate; 106. a double-headed piston.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1 to 8, the present invention provides a draw-out type low voltage switch cabinet, which comprises a switch cabinet main body 1, and a drawer installation groove 2 and a reserve groove 3 respectively arranged along the height direction of one side and the edge of the switch cabinet main body 1 at equal intervals, rotate the push-and-pull institution 4 of assembly in drawer mounting groove 2 inside, and assemble drawer main part 6 at push-and-pull institution 4 top, drawer main part 6 is including assembling drawer body 61 at push-and-pull institution 4 top, the inside fixed division board 62 that is equipped with of drawer body 61, the both sides of division board 62 enclose into circuit connection chamber 63 and the electric chamber 64 of arranging with the inner wall of drawer body 61 respectively, the inner wall of drawer body 61 has been seted up and has been buried line groove 65, the inside both ends of buried line groove 65 all rotate and are provided with the pulley, screw fixedly connected with circuit integrated board is passed through in the inside in electric chamber 64 of arranging, the top of circuit integrated board is provided with electric elements.

The push-pull mechanism 4 comprises a supporting shaft 49 fixedly assembled in the drawer mounting groove 2, a sliding rail supporting plate 41 rotatably assembled on the outer wall of the supporting shaft 49, strip-shaped grooves 48 transversely formed in two sides of the sliding rail supporting plate 41, a first air pressure telescopic rod 43 fixedly assembled in the reserved groove 3, and a second air pressure telescopic rod 47 fixedly assembled on the inner wall of the drawer mounting groove 2, wherein the top end of the second air pressure telescopic rod 47 is assembled in the strip-shaped grooves 48, the bottom end of the inside of the first air pressure telescopic rod 43 is communicated with the inside of the second air pressure telescopic rod 47 through a connecting pipe 46, the inside of the reserved groove 3 is rotatably assembled with a lower pressure rod 44, one end of the lower pressure rod 44 close to the first air pressure telescopic rod 43 is provided with a sliding groove 45, the top end of the first air pressure telescopic rod 43 is slidably arranged in the sliding groove 45, and a user can lift the other end of the lower pressure rod 44 up or down through the action of lifting up, thereby make first atmospheric pressure telescopic link 43 extension or shrink, can take into the inside of first atmospheric pressure telescopic link 43 through connecting pipe 46 with the inside gas of first atmospheric pressure telescopic link 43 at this in-process, or extrude the inside of second atmospheric pressure telescopic link 47, thereby drive second atmospheric pressure telescopic link 47 shortens or extends, thereby realize the incline direction of control slide rail layer board 41, frictional force when the gravity of make full use of drawer main part 6 self overcomes its and slides, thereby greatly save the strength of drawer main part push-and-pull in-process, also can reduce the frictional force between each part, realize extension spare part life's effect.

The automatic power-off mechanism 7 is vertically arranged in the drawer main body 6, the automatic power-off mechanism 7 comprises a socket 702 assembled on one side of the inner wall of the drawer installation groove 2, an integrated shell 701 fixedly assembled in the circuit connection cavity 63, a pressure spring 704 and a plug 706 assembled at the top end in the integrated shell 701, guide grooves 705 are formed in two sides of the inner wall of the integrated shell 701, a limiting insertion block 710 is fixedly assembled on two sides of the plug 706, a pulley is also rotatably arranged at the top of the integrated shell 701, in the normal use process of the automatic power-off mechanism 7, a user controls the elastic deformation force when the pressure spring 704 is tightened or loosened to close or open the plug 706 and the socket 702, so that the on-off of the circuit in each drawer main body 6 is controlled, the on-off of the circuit can be controlled by manpower before and after the normal maintenance operation is carried out, and the maintenance operation is avoided to be carried out in the electrified state of the electric elements, thereby avoiding the problem that the maintainers are hurt by electric shock by mistake.

The inside of the drawer main body 6 is fixedly provided with an outage trigger mechanism 10, the outage trigger mechanism 10 comprises a first tap 102 and a second tap 103 which are fixedly assembled at one side and the bottom of the inner wall of the electrical arrangement cavity 64, a sealing piston sleeve 104 which is fixedly assembled at the bottom of the inner wall of the electrical arrangement cavity 64, and a first telescopic rod 101 which is vertically assembled inside the circuit connection cavity 63, the bottom end inside the first telescopic rod 101 is communicated with the inside of the first tap 102 through a dredging pipe, two ends inside the sealing piston sleeve 104 are respectively communicated with the inside of the first tap 102 and the second tap 103 through dredging pipes, the number of the sealing piston sleeves 104 is the same as that of the electric elements on the circuit integrated board, and the middle inside the sealing piston sleeve 104 is filled with liquid which is easily vaporized when heated, for example: the sealing component used in the sealing piston sleeve 104 is of an existing related structure, each sealing piston sleeve 104 is positioned right below each corresponding electrical element, and meanwhile, after the circuit integrated board is installed, the bottom of the circuit integrated board is tightly attached to the middle of the top of the sealing piston sleeve 104, so that when the electrical elements have a short-circuit fault, heat generated by the electrical elements is sufficiently and quickly transferred to the sealing piston sleeve 104, the liquid in the circuit integrated board can absorb heat to generate high-temperature and high-pressure steam, the first telescopic rod 101 can be driven to contract, the circuit integrated board can be used as a driving source, partial heat generated when the electrical elements are in a short circuit can be absorbed, the probability of open fire is reduced, and the use safety of the electrical elements is improved.

According to fig. 2, 3 show, in this embodiment, the equal fixedly connected with drawer slide rail 42 in bottom of drawer body 61 outer wall both sides, the equal movable assembly in inside both sides of slide rail layer board 41 in top and bottom of drawer slide rail 42, the benefit that sets up like this lies in, the user can separately assemble slide rail layer board 41 and drawer slide rail 42, make its equipment step the same with the operating procedure of traditional drawer slide rail installation, thereby reduce its installation degree of difficulty, be convenient for dismantle it in the later stage use and maintain or change, improve the work efficiency who maintains the change.

According to fig. 7, in this embodiment, the plug 706 is symmetrically provided with two limit hooks 707 inside, two adjacent limit hooks 707 are hinged to the top ends of the opposite surfaces, a connecting rod 708 is hinged to the top end of each of the two limit hooks 707, the opposite ends of the two connecting rods 708 are hinged to the pendant at one end of the lifting rope 709, the top of the plug 706 is fixedly provided with the cable 8, one end of the cable 8 penetrates through the top of the integrated housing 701 and extends to the outside thereof, and one end of the cable 8 is inserted into the wire embedding groove 65, so that the advantage is that the plug 706 can be pulled up by tightening the cable 8 in the normal or abnormal state of the electrical component, the cable 8 is tightened in two ways, namely, manually tightened or tightened by the first telescopic rod 101, which correspond to the normal and abnormal states of the electrical component, respectively, so that the plug is separated from the socket 702, thereby the control circuit is disconnected, and the compression spring 704 is compressed in the rising process of the plug 706, make it take place elastic deformation and accumulate the power, can when needs, make plug 706 make its removal that resets under the spring action of pressure spring 704 through loosening hawser 8 to peg graft together with socket 702, realize the intercommunication of circuit, and plug 706 is at the removal in-process, it can drive spacing inserted block 710 and carry out synchronous motion, thereby control drawer main part 6's locking state, can be under electric elements normal condition, through manpower control, also can realize drawer main part 6's automatic opening through steam drive under electric elements abnormal condition.

According to fig. 7 and 8, in this embodiment, one end of the lifting rope 709 is bolted to one end of the cable 8, one end of the limiting insertion block 710 penetrates through the inside of the guiding groove 705 and extends to the outside thereof, the two ends of the top of the socket 702 are both provided with the limiting insertion holes 711, the shape of the inside of the limiting insertion holes 711 matches with the shape of one end of the limiting insertion block 710, and the top of the socket 702 is fixedly provided with the limiting posts 703, so that the two sides of the limiting posts 703 are both provided with the limiting grooves 712 for matching with the bottom ends of the limiting hooks 707, and the bottom ends of the limiting hooks 707 are clamped inside the limiting grooves 712, so that the plug 706 can be firmly inserted into the socket 702, and at this time, the bottom ends of the limiting insertion blocks 710 can also be inserted into the limiting insertion holes 711, so as to realize the limiting fixation of the drawer body 6, so that the drawer body can be more stably and firmly located inside the mounting groove 2, and the lifting rope 709 can be driven by tightening the cable 8 to be synchronously tightened, and a certain length is reserved at one end of the cable 8 close to the plug 706, so that the cable can be smoothly tightened or loosened, and the locking state between the limiting hook 707 and the limiting groove 712 can be controlled.

According to fig. 5, in this embodiment, a sealing partition plate 105 is fixedly disposed at one third of the inside of the sealing piston sleeve 104, a double-headed piston 106 is movably sleeved inside the sealing piston sleeve 104, and the middle of the double-headed piston 106 is inserted into the center of the sealing partition plate 105, so that the double-headed piston 106 has a length of two thirds of the length of the sealing piston sleeve 104, so that the two ends of the double-headed piston 106 and the sealing partition plate 105 jointly divide the inside of the sealing piston sleeve 104 into three cavities with the same size, the cavity in the middle is filled with water, when an electrical element is short-circuited to generate high temperature, heat is rapidly transferred to the sealing piston sleeve 104, and the water inside the sealing piston sleeve 104 is heated to generate high-pressure and high-temperature water vapor, so as to drive the double-headed piston 106 to translate, and in the process, the two ends of the double-headed piston 106 respectively squeeze and suck the two ends of the inside of the sealing piston sleeve 104, high pressure and negative pressure are respectively formed to drive the first telescopic rod 101 to be contracted, thereby tightening the cable 8 and the lifting rope 709, thereby separating the limit hook 707 from the limit groove 712, releasing the locked state between the plug 706 and the socket 702 and opening the circuit, thereby cutting off the supply of electric power to the electric components inside the drawer main body 6.

According to fig. 3 and 4, in this embodiment, one end of the interior of the second tap 103 is connected to the bottom end of the interior of the second pneumatic telescopic rod 47 through the air duct 5, so that when the double-headed piston 106 is driven by high-pressure high-temperature steam to move horizontally, the two ends of the double-headed piston 106 respectively press and suck the two ends of the interior of the sealing piston sleeve 104, so as to drive the second pneumatic telescopic rod 47 to extend and jack up one side of the slide rail support plate 41 and incline the slide rail support plate until the component force of gravity of the drawer main body 6 towards the inclined lower side is greater than the friction force, at this time, the plug 706 is disconnected from the socket 702, so that the drawer main body 6 automatically and slowly slides towards the outside of the drawer installation groove 2, and is automatically opened, thereby improving the ventilation between the interior and the outside, further improving the heat dissipation effect, and making it more obvious, and facilitating maintenance personnel to quickly and accurately find out a faulty drawer main body, and timely maintenance is carried out on the device.

Referring to fig. 4 and 6, in this embodiment, a tightening mechanism 9 is assembled inside the front side plate of the drawer body 61, the tightening mechanism 9 includes an assembly groove 91 formed inside the front side plate of the drawer body 61, a handle shaft 92 is rotatably connected to the center inside the assembly groove 91, a take-up pulley 93 and a ratchet 94 are fixedly assembled in the middle of the outer wall of the handle shaft 92, and a spring groove 95 is formed at the top of the inner wall of the assembly groove 91, so that during normal maintenance and repair operations, a user can rotate the handle shaft 92 first to drive the take-up pulley 93 and the ratchet 94 to rotate synchronously, thereby pulling the cable 8 and winding and tensioning the cable, thereby driving the limit hook 707 to be separated from the limit groove 712 on the limit post, and then separating the plug 706 from the socket 702 to break the circuit and release the locking state with the drawer main body 6, thereby facilitating the user to pull out the cable 703, simultaneously, the electric elements in the drawer main body 6 are in a non-electrified state, so that the maintenance and repair operation is carried out in a safe non-electrified state, the operation safety of the maintenance and repair is improved, and the danger caused by the accidental electric shock of maintenance personnel is avoided.

According to fig. 6, in this embodiment, the top fixedly connected with reset spring 96 of spring groove 95 inner wall, reset spring 96's bottom fixedly connected with stopper 97, the top activity of stopper 97 is cup jointed in the inside of spring groove 95, the top fixedly connected with stay cord 98 of stopper 97, the benefit that sets up like this lies in, ratchet 94 rotates the in-process, it can the wedge arch of edge make stopper 97 carry out reciprocating motion from top to bottom, stopper 97 all can be spacing to ratchet 94's rotation reversal when moving down at every turn, keep the shrink state of plug 706, avoid plug 706 to reset under the spring action of pressure spring 704, and close often and run into when drawer main part 6, realize the protection of accomodating to plug 706.

According to fig. 4 and 6, in this embodiment, one end of the pull rope 98 sequentially penetrates through the top of the inner wall of the spring groove 95 and the outer wall of the drawer body 61 and extends to the outside of the spring groove, and the finger ring is bolted to one end of the pull rope 98, so that the pull rope 98 can be driven by the finger ring to move synchronously after the drawer body 6 is reset to the inside of the drawer mounting groove 2, thereby enabling the limit block 97 to move towards the top end of the inside of the spring groove 95, thereby releasing the reversed limit fixed state of the ratchet 94, enabling the plug 706 to be connected with the socket 702 in an inserting manner, enabling the limit plug 710 to be connected with the limit jack 711 in an inserting manner, then loosening the finger ring, pulling the drawer body 6 again, and checking whether the drawer body 6 is fixed or not to complete the fixing of the drawer body 6.

According to fig. 2, 4 shows, in this embodiment, the one end of hawser 8 runs through in proper order and buries the inside of wire casing 65 and extend to assembly groove 91, and the one end of hawser 8 and the inside middle department fixed connection of take-up pulley 93, the benefit that sets up like this lies in, take-up pulley 93 can carry out the rolling or relax to hawser 8 when normally maintaining the maintenance and overhaul, thereby make the maintainer can control the locking of drawer main part 6 and open and shut and the break-make of circuit, make two kinds of operations go on in step, convenient to use person can open or close drawer main part 6 fast, and break off or put through the circuit, easy operation is convenient, the security of simultaneous operation is high, can avoid the user to appear the problem of wrong electric shock.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a pull-out type low-voltage switchgear, includes cubical switchboard main part (1), drawer mounting groove (2) and preformed groove (3) that the direction of height equidistance along cubical switchboard main part (1) one side and edge was seted up respectively, rotates push-and-pull institution (4) of assembly in drawer mounting groove (2) inside and assemble drawer main part (6) at push-and-pull institution (4) top, its characterized in that: the drawer main body (6) comprises a drawer body (61) assembled at the top of the push-pull mechanism (4), a partition plate (62) is fixedly assembled in the drawer body (61), two sides of the partition plate (62) and the inner wall of the drawer body (61) enclose a circuit connection cavity (63) and an electrical distribution cavity (64) respectively, and a wire embedding groove (65) is formed in the inner wall of the drawer body (61);

the push-pull mechanism (4) comprises a supporting shaft (49) fixedly assembled in the drawer mounting groove (2), a sliding rail supporting plate (41) rotatably assembled on the outer wall of the supporting shaft (49), strip-shaped grooves (48) transversely formed in two sides of the sliding rail supporting plate (41), a first air pressure telescopic rod (43) fixedly assembled in the reserved groove (3), and a second air pressure telescopic rod (47) fixedly assembled on the inner wall of the drawer mounting groove (2), wherein the top end of the second air pressure telescopic rod (47) is assembled in the strip-shaped grooves (48), the bottom end of the inner part of the first air pressure telescopic rod (43) is communicated with the inner part of the second air pressure telescopic rod (47) through a connecting pipe (46), a lower pressing rod (44) is rotatably assembled in the reserved groove (3), and a sliding groove (45) is formed in one end, close to the first air pressure telescopic rod (43), of the lower pressing rod (44), the top end of the first air pressure telescopic rod (43) is arranged in the sliding groove (45) in a sliding manner;

an automatic power-off mechanism (7) is vertically installed in the drawer main body (6), the automatic power-off mechanism (7) comprises a socket (702) assembled on one side of the inner wall of the drawer installation groove (2), an integrated shell (701) fixedly assembled in the circuit connection cavity (63), a pressure spring (704) and a plug (706) assembled at the top end of the inside of the integrated shell (701), guide grooves (705) are formed in two sides of the inner wall of the integrated shell (701), and limiting insertion blocks (710) are fixedly assembled on two sides of the plug (706);

the inside fixed outage trigger mechanism (10) that is equipped with of drawer main part (6), outage trigger mechanism (10) are including fixed assembly at first tap (102) and second tap (103) of one side and the bottom of electric chamber (64) inner wall of arranging, fixed assembly at sealed piston cover (104) of electric chamber (64) inner wall bottom of arranging and vertical assembly at inside first telescopic link (101) of circuit connection chamber (63), the inside bottom of first telescopic link (101) is through dredging the inside intercommunication of pipe with first tap (102), the inside both ends of sealed piston cover (104) are respectively through dredging the inside intercommunication of pipe with first tap (102) and second tap (103).

2. The draw-out low-voltage switchgear cabinet according to claim 1, wherein: the drawer is characterized in that drawer sliding rails (42) are fixedly connected to the bottoms of two sides of the outer wall of the drawer body (61), and the tops and the bottoms of the drawer sliding rails (42) are movably assembled on two sides of the inner portion of the sliding rail supporting plate (41).

3. The draw-out low-voltage switchgear cabinet according to claim 1, wherein: limiting hooks (707) are symmetrically assembled inside the plug (706), connecting rods (708) are hinged to the top ends of opposite surfaces of every two adjacent limiting hooks (707), opposite ends of every two connecting rods (708) are hinged to a pendant at one end of a lifting rope (709), a cable (8) is fixedly assembled at the top of the plug (706), one end of the cable (8) penetrates through the top of the integrated shell (701) and extends to the outside of the integrated shell, and one end of the cable (8) is inserted into the wire embedding groove (65).

4. The draw-out low-voltage switchgear cabinet according to claim 3, wherein: one end bolt of lifting rope (709) is in the one end of hawser (8), the inside of guide way (705) is run through and is extended to its outside to the one end of spacing inserted block (710), spacing jack (711) have all been seted up at the both ends at socket (702) top, the shape of spacing jack (711) inside matches with the shape of spacing inserted block (710) one end, the fixed spacing post (703) that is provided with in top of socket (702).

5. The draw-out low-voltage switchgear cabinet according to claim 1, wherein: the sealing piston is characterized in that a sealing partition plate (105) is fixedly arranged at one third of the inner part of the sealing piston sleeve (104), a double-headed piston (106) is sleeved in the inner part of the sealing piston sleeve (104), and the middle of the double-headed piston (106) is inserted into the center of the sealing partition plate (105).

6. The draw-out low-voltage switchgear cabinet according to claim 1, wherein: one end inside the second adapter (103) is communicated with the bottom end inside the second pneumatic telescopic rod (47) through a gas guide pipe (5).

7. The draw-out low-voltage switchgear cabinet according to claim 1, wherein: the drawer is characterized in that a tightening mechanism (9) is assembled inside a front side plate of the drawer body (61), the tightening mechanism (9) comprises an assembly groove (91) formed inside the front side plate of the drawer body (61), a handle shaft (92) is rotatably connected to the center of the interior of the assembly groove (91), a take-up pulley (93) and a ratchet wheel (94) are fixedly assembled in the middle of the outer wall of the handle shaft (92), and a spring groove (95) is formed in the top of the inner wall of the assembly groove (91).

8. The draw-out low-voltage switchgear cabinet according to claim 7, wherein: the top fixedly connected with reset spring (96) of spring groove (95) inner wall, the bottom fixedly connected with stopper (97) of reset spring (96), the inside at spring groove (95) is cup jointed in the top activity of stopper (97), the top fixedly connected with stay cord (98) of stopper (97).

9. The draw-out low-voltage switchgear cabinet according to claim 8, wherein: one end of the pull rope (98) penetrates through the top of the inner wall of the spring groove (95) and the outer wall of the drawer body (61) in sequence and extends to the outside of the spring groove, and a finger ring is bolted at one end of the pull rope (98).

10. The draw-out low-voltage switchgear cabinet according to claim 3, wherein: one end of the mooring rope (8) sequentially penetrates through the wire embedding groove (65) and extends to the inside of the assembling groove (91), and one end of the mooring rope (8) is fixedly connected with the middle of the inside of the take-up pulley (93).

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