CN220822290U - Switch cabinet lifting door device and switch cabinet - Google Patents

Abstract

The application provides a switch cabinet lifting door device and a switch cabinet, comprising a door body, wherein a first locking part is arranged on the door body and can be adapted to a second locking part on the cabinet body of the switch cabinet, so that the door body can be locked or unlocked between the first locking part and the second locking part through lifting movement relative to the cabinet body; a guide part; the door handle is arranged on the door body and can rotate relative to the door body, and the door handle is provided with a cam which can rotate under the drive of the door handle; the connecting rod assembly comprises a crank arm, a first connecting rod and a second connecting rod, a rotating fulcrum located between the first end and the second end is arranged on the crank arm, the rotating fulcrum is hinged with the door body, one end of the first connecting rod is hinged with the cam, the other end of the first connecting rod is hinged with the first end, one end of the second connecting rod is hinged with the second end, and the other end of the second connecting rod is used for being connected with a cabinet body of the switch cabinet. Thereby the operation arm of force has been increased for operating personnel is more laborsaving in the operation in-process, still is favorable to improving lock intensity.

Description

Switch cabinet lifting door device and switch cabinet

Technical Field

The utility model relates to the technical field of power equipment, in particular to a switch cabinet lifting door device and a switch cabinet.

Background

The lifting door is widely applied in the switch cabinet industry, the lifting door is used more in the existing distribution cabinet on the market to lift the whole door plate, so that the door lock is opened and locked, the lifting door handle is relatively close to the supporting point, the operation force arm is short, workers can lift the whole door plate with relatively large force in the operation process, the problem of labor-consuming operation exists, and meanwhile, the self strength of the door lock can be greatly weakened along with the operation time.

Disclosure of utility model

In view of the above-mentioned shortcomings of the prior art, an object of the present utility model is to provide a switch cabinet lifting door device and a switch cabinet, which aim to improve the laborious problem of operating the lifting door.

In order to solve the technical problems, the application adopts the following technical scheme:

The application provides a switch cabinet lifting door device, which comprises a door body, wherein a first locking part is arranged on the door body, the first locking part can be matched with a second locking part on a cabinet body of a switch cabinet, so that the door body can be locked or unlocked between the first locking part and the second locking part through lifting movement relative to the cabinet body; a guide part configured to guide the door body with respect to the lifting movement of the cabinet body; a door handle provided on the door body to be rotatable with respect to the door body, the door handle being provided with a cam rotatable by a drive of the door handle; the connecting rod assembly comprises a crank arm, a first connecting rod and a second connecting rod, wherein the crank arm is provided with a first end and a second end, a rotating fulcrum arranged between the first end and the second end is arranged on the crank arm, the rotating fulcrum is hinged with the door body, one end of the first connecting rod is hinged with the cam, the other end of the first connecting rod is hinged with the first end, one end of the second connecting rod is hinged with the second end, and the other end of the second connecting rod is connected with a cabinet body of the switch cabinet.

In some embodiments of the present application, a length from a hinge of the first link to the first end to the rotation fulcrum is a first distance, and a length from a hinge of the second link to the second end to the rotation fulcrum is a second distance, and the first distance is greater than the second distance.

In some embodiments of the application, the ratio of the first distance to the second distance is 2:1.

In some embodiments of the present application, the crank arm is a plate, and the crank arm adopts a hollow structure.

In some embodiments of the present application, the crank arm is triangular, and the crank arm has a first arm body, a second arm body and a third arm body that are connected end to end, where a connection between the first arm body and the second arm body forms the rotation fulcrum, the first end is located at a connection between the first arm body and the third arm body, and the second end is located at a connection between the second arm body and the third arm body, and further includes a connection rib connected between the first arm body and the second arm body, between the first arm body and the third arm body, or between the second arm body and the third arm body.

In some embodiments of the present application, the door further comprises a bearing and a flat pad, the crank arm is provided with a mounting hole, a fixing pin is arranged at a rotation pivot point of the door body and the crank arm, and the fixing pin sequentially penetrates through the mounting hole, the bearing and the flat pad, so that the crank arm is in rotational connection with the door body.

In some embodiments of the application, the bearing is interference fit with the mounting hole.

In some embodiments of the present application, the bearing includes a first connecting portion and a second connecting portion connected to each other, side walls of the first connecting portion and the second connecting portion are formed in a stepped shape by a connecting wall, the first connecting portion is nested in the mounting hole, a diameter of the side wall of the second connecting portion is larger than a diameter of the side wall of the first connecting portion, and the second connecting portion is welded with the crank arm.

In some embodiments of the present application, the fixing pin is stepped, the fixing pin is provided with a first step and a second step which are adjacently arranged, the first step is located between the door body and the second step, the crank arm and the bearing are mounted on the first step of the fixing pin, and the flat pad is mounted on the second step.

In some embodiments of the present application, the fixing pin further comprises a plug pin, the fixing pin is provided with a jack for matching with the plug pin, the jack is located at one end of the fixing pin away from the rotation pivot, and the plug pin is inserted into the jack to limit the flat pad.

In some embodiments of the present application, the door further includes a limiting pin, and the cam is provided with a limiting groove, where the limiting groove is adapted to the limiting pin, so as to limit the rotation angle of the door handle to drive the cam.

In some embodiments of the present application, the cam is a sector cam, the sector cam includes a first side, a second side, and an outer diameter side, the first side and the second side are connected by the outer diameter side, the hinge position of the first connecting rod and the sector cam is disposed near the first side, and the second side is provided with the limit groove.

In some embodiments of the present application, the door body is provided with a limiting groove, and the lever is provided with a limiting protrusion, and the limiting protrusion extends at least partially into the limiting groove to limit a movement track of the lever rotating relative to the door body.

The second aspect of the application provides a switch cabinet, comprising a cabinet body, wherein the cabinet body comprises a cabinet body and a cabinet door, the cabinet door body is provided with at least one functional chamber, the cabinet door is used for opening or closing the functional chamber, the cabinet door is provided with a second locking part, and the second locking part is a clamping groove; any one of the switch cabinet lifting door devices is arranged on the cabinet body; the first locking part is a pin, the pin penetrates through the clamping groove, and the door body drives the pin to slide along the clamping groove, so that the door body and the cabinet door are in a locking or unlocking state.

In some embodiments of the present application, the clamping groove is L-shaped, the clamping groove includes a first slot hole and a second slot hole that are perpendicular to each other, one end of the first slot hole extends toward a side wall of the cabinet door to form an opening, and when the switch cabinet lifting door device and the cabinet door are in an unlocked state, the pin slides to an intersection of the first slot hole and the second slot hole, so that the cabinet door can be pulled along the opening of the first slot hole.

In some embodiments of the present application, the cabinet door is provided with a plurality of clamping grooves, and the door body is provided with a plurality of pins, and the pins are in one-to-one correspondence with the clamping grooves.

The beneficial effects are that:

The application discloses a switch cabinet door lifting device, wherein a door handle and a connecting rod assembly are connected through cam rotation, the cam is driven to rotate when the door handle is rotated, so that a first connecting rod is driven to displace, specifically, the cam is rotated and drives the first connecting rod to move upwards through rotating the door handle, as a first end of a crank arm is hinged with the first connecting rod, a second end of the crank arm is hinged with a second connecting rod, and a rotating fulcrum of the crank arm relative to a door body is positioned between the first end and the second end, when the first connecting rod moves upwards, the first end of the crank arm synchronously moves upwards, and as the rotating fulcrum of the crank arm rotates, the second end of the crank arm and the second connecting rod connected with the second end of the crank arm move downwards, the other end of the second connecting rod is fixedly connected with a cabinet body of the switch cabinet, so that the connecting rod assembly and the door body can move upwards under the reaction force of the switch cabinet, and a first locking part of the door body and a second locking part of the switch cabinet can be locked or unlocked in the upward movement process. In the process of locking or unlocking the door body by lifting movement relative to the cabinet body, the guide part guides the lifting movement of the door body, the phenomenon of jamming is prevented, the door handle is designed to drive the cam to drive the connecting rod assembly to enable the door body to lift, and the distance from the pivot of the crank arm to the force application part of the door handle is larger, so that the operation force arm is increased, operators can save more labor in the operation process, the working efficiency and the use convenience are improved, and the door lock strength is also improved.

Drawings

FIG. 1 is a schematic view of a switch cabinet lifting door apparatus in an embodiment of the application;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an exploded view of a switch cabinet lifting door apparatus in one embodiment of the application;

FIG. 4 is an enlarged schematic view of a linkage assembly of a switch cabinet lift gate apparatus in an embodiment of the application;

FIG. 5 is a schematic diagram illustrating the connection of a lever to a door body in a door lifting device of a switchgear according to an embodiment of the present application;

FIG. 6 is a partial schematic view of a switchgear cabinet in an embodiment of the application;

FIG. 7 is an enlarged view of a portion of FIG. 6 at B;

FIG. 8 is a schematic diagram of a door of a switchgear cabinet in an embodiment of the application;

Fig. 9 is a partial enlarged view at C of fig. 8.

Description of main reference numerals:

1, a door body, 11 a first locking part, 12 a fixing pin; 2 a guiding part; 3, door handles; 4-bar assembly, 401 mounting hole, 41 crank arm, 411 first arm, 412 second arm, 413 third arm, 42 first bar, 43 second bar; 5 cams, 501 limit grooves; 6, a bearing; 7, flat pad; 8 pins; 9, a limiting pin;

100 cabinet bodies, 110 cabinet bodies, 120 cabinet doors, 101 first slotted holes and 102 second slotted holes.

Detailed Description

The utility model provides a switch cabinet lifting door device and a switch cabinet, and aims to make the purposes, technical schemes and effects of the utility model clearer and more definite. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The door lock rocking handle and the supporting point of the lifting door are relatively close, so that an operator needs to rotate the door lock rocking handle for a plurality of times, the whole door plate can be lifted with relatively large force in the operation process, and the operation is inconvenient.

Referring to fig. 1 to 9, the present application provides a door lifting device for a switch cabinet, which can achieve the effect of saving labor in operation, and the door lifting device for a switch cabinet comprises a door body 1, a guiding portion 2, a door handle 3 and a connecting rod assembly 4.

The door body 1 is provided with a first locking part 11, the first locking part 11 can be adapted to a second locking part on the cabinet body 100 of the switch cabinet, so that the door body 1 can be locked or unlocked between the first locking part 11 and the second locking part through lifting motion relative to the cabinet body 100, for example, the first locking part 11 and the second locking part can adopt a structure of a limit groove and a bolt 8, and the door body 1 drives the bolt 8 to move relative to the limit groove, so that the bolt 8 and the limit groove realize the locking and unlocking process.

As shown in fig. 2 and fig. 3, the guiding portion 2 is configured to be used for guiding the door body 1 in the lifting motion relative to the cabinet body 100, for example, a fixed hinge is connected between one end of the connecting rod assembly 4, which is far away from the door handle 3, and the cabinet body 100 of the switch cabinet, a chute is arranged on the door body 1 to guide the fixed hinge, and in the lifting motion process of the door handle 3 driving the connecting rod assembly 4 to drive the door body 1, the sliding friction force between the guiding portion 2 and the sliding path is reduced, so that the jamming condition in the lifting motion process of the door body 1 is reduced.

The door handle 3 is provided on the door body 1 so as to be rotatable with respect to the door body 1, and the door handle 3 is provided with a cam 5 rotatable by the drive of the door handle 3. The door handle 3 is rotationally connected with the cam 5 through the pivot to transmit the motion to the first connecting rod 42 through the cam 5, make the link assembly 4 move under the drive of door handle 3, moreover, utilize the eccentric action of cam 5, optimized door handle 3 drive link assembly 4 pivoted motion route, reduce the operating angle of rotating door handle 3 from this, avoid in the prior art need just can realize the up-and-down motion of door body 1 through many times rotatory door handle 3.

The connecting rod assembly 4 comprises a crank arm 41, a first connecting rod 42 and a second connecting rod 43, the crank arm 41 is provided with a first end and a second end, a rotating fulcrum located between the first end and the second end is arranged on the crank arm 41, the rotating fulcrum is hinged with the door body 1, one end of the first connecting rod 42 is hinged with the cam 5, the other end of the first connecting rod 42 is hinged with the first end, one end of the second connecting rod 43 is hinged with the second end, and the other end of the second connecting rod 43 is used for being connected with the cabinet body 100 of the switch cabinet. Wherein, a rotation fulcrum is provided between the crank arm 41 and the door body 1, and the distance from the operation force application point to the rotation fulcrum is increased by the arrangement of the crank arm 41, thereby reducing the operation force, and the crank arm 41 changes the direction of the operation force by the rotation fulcrum, and the second end of the crank arm 41 drives the second connecting rod 43 to move in the opposite direction to the first end of the crank arm 41.

Further, a fixed hinge is connected between the other end of the second connecting rod 43 and the cabinet body 100 of the switch cabinet, the fixed hinge is arranged on the cabinet body 100 of the switch cabinet, when the door handle 3 is pulled to lift the door body 1, the cam 5 drives the first connecting rod 42 and the first end of the turning arm 41 to move upwards, the other end of the turning arm 41 and the second connecting rod 43 move downwards under the driving of the turning arm 41 rotating around the rotating pivot, at this moment, because the fixed hinge is fixed on the cabinet body 100, the door body 1 and the connecting rod assembly 4 move upwards under the reaction force of the cabinet body 100, so that the lifting movement of the door body 1 is realized, and the descending movement of the door body 1 can be deduced in the same way.

In the process of shaking the door handle 3 to drive the connecting rod assembly 4 and the door body 1 to move, compared with the prior art, the force arm distance between the force application point of the door handle 3 and the rotating fulcrum of the crank arm 41 has a longer force arm, so that the effect of saving more labor and bringing convenience to operation is achieved.

In an embodiment, the length from the hinge point of the first link 42 and the first end to the rotation pivot point is a first distance, the length from the hinge point of the second link 43 and the second end to the rotation pivot point is a second distance, and the first distance is greater than the second distance, so that the length of a force arm on the force application side of the door handle 3 can be increased, the force application size of the driving end is reduced, and the effect of saving labor is achieved. Referring to fig. 4, a first distance is illustrated as D1 in the figure and a second distance is illustrated as D2 in the figure.

Specifically, the ratio of the first distance to the second distance is 2:1, the ratio of the first distance to the second distance can achieve better labor-saving effect, and the structure among the door body 1, the door handle 3 and the connecting rod assembly 4 is more compact.

In detail, the lever 41 is a plate member, and the lever 41 has a hollow structure, and the weight of the lever 41 itself is reduced by hollowing out the inside, thereby reducing the operation force of itself. Further, the crank arm 41 itself can be made of a higher strength material, so that the strength of the crank arm 41 is prevented from being affected by the hollow inside.

As shown in fig. 4, specifically, the crank arm 41 is triangular, and the crank arm 41 has a first arm 411, a second arm 412 and a third arm 413 connected end to end, where the connection between the first arm 411 and the second arm 412 forms the rotation pivot, the first end is located at the connection between the first arm 411 and the third arm 413, the second end is located at the connection between the second arm 412 and the third arm 413, and the crank arm further includes a connecting rib connected between the first arm 411 and the second arm 412, between the first arm 411 and the third arm 413, or between the second arm 412 and the third arm 413.

The crank arm 41 is a triangular plate, the triangular structure of the crank arm 41 is more stable due to the arrangement of the connecting ribs, a higher labor-saving effect is achieved after the hollow structure hollowed out in the crank arm 41 is combined, and the mechanical mildness of the crank arm 41 is further guaranteed due to the arrangement of the connecting ribs.

In one embodiment, as shown in fig. 4, the crank arm 41 is fixed by providing a bearing 6 and a flat pad 7. The door body 1 and the turning fulcrum of the turning arm 41 are provided with a fixing pin 12, the turning arm 41 is provided with a mounting hole 401 matched with the fixing pin 12, the fixing pin 12 sequentially penetrates through the mounting hole 401 of the turning arm 41, the bearing 6 and the flat pad 7, so that the turning arm 41 is fixed on the door body 1, the smoothness of turning of the turning arm 41 is improved through the bearing 6 and the flat pad 7, and therefore the operation effect of lifting movement of the door body 1 is improved.

In more detail, the bearing 6 is in interference fit with the mounting hole 401 of the crank arm 41, then the crank arm 41 is mounted on the fixing pin 12, so that the fixing pin 12 is inserted into the inner hole wall of the bearing 6, and the interference fit of the bearing 6 and the mounting hole 401 of the crank arm 41 is beneficial to reducing the friction force at the rotating pivot of the crank arm 41 and the door body 1, thereby realizing the effect of easily operating the lifting motion of the door body 1.

Wherein, bearing 6 is echelonment structure, and bearing 6 contains first connecting portion and the second connecting portion that links to each other, and the lateral wall of first connecting portion and second connecting portion forms the echelonment through the connecting wall, and first connecting portion nest is in mounting hole 401, and the lateral wall diameter of second connecting portion is greater than the lateral wall diameter of first connecting portion, from this fixes a position crank 41 through the echelonment of bearing 6, can also reduce the frictional force between fixed pin 12 and the crank 41 simultaneously.

The fixed pin 12 is echelonment, and fixed pin 12 is equipped with adjacent first step and the second step that sets up, and first step is located between door body 1 and the second step, turning arm 41 with bearing 6 installs on the first step of fixed pin 12, flat pad 7 install in on the second step through adding that fixed pin 12 design journey echelonment for fixed pin 12 not only can adapt to the not unidimensional installation of bearing 6 and flat pad 7, and as shown in fig. 5, fixed pin 12 and the biggest with the position area of the junction of door body 1, can also increase the welding area between fixed pin 12 and the door body 1, guarantees the joint strength between fixed pin 12 and the door body 1, improves the connection structure reliability of fixed pin 12 and turning arm 41.

Still include bolt 8, fixed pin 12 be equipped with be used for with the jack of bolt 8 looks adaptation, the jack is located fixed pin 12 keeps away from on the one end of rotation fulcrum, installs turning arm 41, bearing 6 and flat pad 7 in proper order on fixed pin 12, inserts bolt 8 and locates the jack in order to right flat pad 7 is spacing, avoids turning arm 41 and AND gate body 1 to rotate the structure of junction loose.

As shown in fig. 2, this embodiment further defines that the door further includes a limiting pin 9 disposed on the door body 1, the cam 5 is provided with a limiting groove 501, the limiting groove 501 is adapted to the limiting pin 9 to limit the rotation angle of the door handle 3 driving the cam 5, specifically, pulling the door handle 3 to a certain direction drives the cam 5 to rotate until the limiting pin 9 is inserted into the limiting groove 501, and the movement of the door handle 3 in the direction stops, thereby limiting the rotation angle of the door handle 3 and preventing the over-operation.

Specifically, the fan-shaped cam 5 is adopted in the cam 5, the fan-shaped cam 5 comprises a first side edge, a second side edge and an outer diameter side edge, the first side edge and the second side edge are connected through the outer diameter side edge, the outer diameter side edge is arc-shaped, the distance between the first side edge and the second side edge is increased along the direction towards the outer diameter side edge, the hinge position of the first connecting rod 42 and the fan-shaped cam 5 is close to the first side edge, the second side edge is provided with the limiting groove 501, and the door body 1 close to the side edge is provided with the limiting pin 9, so that the operation angle of the door handle 3 is reduced under the eccentric action of the fan-shaped cam 5, and excessive rotation is avoided.

In an embodiment, as shown in fig. 1 and 3, a limit groove is formed on the door body 1, the limit groove is used for being matched with a limit protrusion formed on the crank arm 41, the limit protrusion extends into the limit groove, and slides along the limit groove along with the rising and falling movement process of the door body 1, so that the movement track of the crank arm 41 relative to the door body 1 is limited, excessive operation is avoided, meanwhile, the movement process of the door body 1 driven by the connecting rod assembly 4 is more stable, and the movement path design is more reliable.

As shown in fig. 6 to 9, another aspect of the present application further provides a switch cabinet, including a cabinet body 100 and any one of the switch cabinet lifting door devices described above, where the cabinet body 100 includes a cabinet body 110 and a cabinet door 120 disposed on the cabinet body 110, the cabinet door 120 body is provided with at least one functional chamber, and the cabinet door 120 is used for opening or closing the functional chamber; the cabinet body 100 of the switch cabinet is provided with different functional chambers, such as an incoming line cabinet, an outgoing line cabinet, a PT cabinet, an isolation cabinet and the like, according to different functions, and the cabinet door 120 is unlocked and unlocked by arranging a second locking part on the cabinet door 120 for matching with the first locking part 11 arranged on the lifting door device. Specifically, the first locking portion 11 is a pin, the second locking portion is a slot, and during the lifting motion of the door body 1 relative to the cabinet body 100, the door body 1 drives the pin to slide along the slot so as to realize the locking and unlocking states of the door body 1 and the cabinet door 120, when the door body 1 and the cabinet door 120 are in the unlocking states, the functional chamber can be opened by opening the cabinet door 120, and when the door body 1 and the cabinet door 120 are in the locking states, the cabinet door 120 locks the functional chamber.

Referring to fig. 9, in more detail, the slot is L-shaped, the slot includes a first slot 101 and a second slot that are perpendicular to each other, one end of the first slot 101 extends toward a side wall of the cabinet door 120 to form an opening, when the door lifting device of the switch cabinet is in an unlocked state with the cabinet door 120, the pin slides to an intersection of the first slot 101 and the second slot, and the cabinet door 120 can be pulled along the opening of the first slot 101. Thus, when the door body 1 moves up and down relative to the cabinet body 100, the door body 1 drives the pin to slide along the second slot hole to the first slot hole 101 and slide to the opening of the first slot hole 101, and at this time, an operator can unlock the door body 1 and the cabinet door 120 through the opening, so as to open the cabinet door 120 to open the functional room.

Further, in order to further improve the locking strength of the cabinet door 120 and the door body 1 and the stability of the matching structure, the cabinet door 120 is provided with a plurality of clamping grooves, and the door body 1 is provided with a plurality of pins which are in one-to-one correspondence with the clamping grooves.

It will be understood that equivalents and modifications will occur to those skilled in the art based on the present utility model and its spirit, and all such modifications and substitutions are intended to be included within the scope of the present utility model.

Claims (10)

1. A switch cabinet lifting door apparatus, comprising:

The door body is provided with a first locking part which can be matched with a second locking part on the cabinet body of the switch cabinet, so that the door body can be locked or unlocked between the first locking part and the second locking part through lifting movement relative to the cabinet body;

A guide part configured to guide the door body with respect to the lifting movement of the cabinet body;

A door handle provided on the door body to be rotatable with respect to the door body, the door handle being provided with a cam rotatable by a drive of the door handle;

The connecting rod assembly comprises a crank arm, a first connecting rod and a second connecting rod, wherein the crank arm is provided with a first end and a second end, a rotating fulcrum arranged between the first end and the second end is arranged on the crank arm, the rotating fulcrum is hinged with the door body, one end of the first connecting rod is hinged with the cam, the other end of the first connecting rod is hinged with the first end, one end of the second connecting rod is hinged with the second end, and the other end of the second connecting rod is connected with a cabinet body of the switch cabinet.

2. The switch cabinet lifting door apparatus of claim 1, wherein a length from a hinge of the first link to the first end to the pivot point is a first distance, and a length from a hinge of the second link to the second end to the pivot point is a second distance, the first distance being greater than the second distance.

3. The switch cabinet lift gate device of claim 2 wherein the ratio of the first distance to the second distance is 2:1.

4. The switch cabinet lifting door apparatus of claim 2 wherein,

The crank arm is a plate and adopts a hollow structure;

The crank arm is triangle-shaped, the crank arm has end to end's first arm body, second arm body and third arm body, first arm body with the junction of second arm body forms the rotation fulcrum, first end is located first arm body with the junction of third arm body, the second end is located the second arm body with the junction of third arm body still includes the connecting rib, the connecting rib connect in between first arm body and the second arm body, between first arm body and the third arm body or between second arm body and the third arm body.

5. The door lifting device for a switchgear cabinet according to any one of claims 1 to 4, further comprising a bearing and a flat pad, wherein the lever is provided with a mounting hole, a fixing pin is provided at a rotation fulcrum of the door body and the lever, and the fixing pin sequentially passes through the mounting hole, the bearing and the flat pad, so that the lever is rotatably connected with the door body.

6. The switch cabinet lift gate device of claim 5, wherein,

The bearing is in interference fit with the mounting hole;

The bearing comprises a first connecting part and a second connecting part which are connected, wherein the side walls of the first connecting part and the second connecting part form a step shape through a connecting wall, the first connecting part is nested in the mounting hole, the diameter of the side wall of the second connecting part is larger than that of the side wall of the first connecting part, and the second connecting part is welded with the turning arm;

The fixed pin is in a step shape, the fixed pin is provided with a first step and a second step which are adjacently arranged, the first step is positioned between the door body and the second step, the crank arm and the bearing are arranged on the first step of the fixed pin, and the flat pad is arranged on the second step;

Still include the bolt, the fixed pin be equipped with be used for with bolt looks adaptation jack, the jack is located the fixed pin is kept away from on the one end of rotation fulcrum, the bolt inserts and locates the jack is in order to right the flat pad is spacing.

7. The switch cabinet lift gate device of any one of claims 1 to 4, further comprising:

The limiting pin is arranged on the door body, the cam is provided with a limiting groove, and the limiting groove is matched with the limiting pin so as to limit the rotation angle of the door handle driving the cam;

The cam is a sector cam, the sector cam comprises a first side edge, a second side edge and an outer diameter side edge, the first side edge and the second side edge are connected through the outer diameter side edge, the hinge position of the first connecting rod and the sector cam is close to the first side edge, and the second side edge is provided with the limiting groove.

8. The door lifting device of any one of claims 1 to 4, wherein the door body is provided with a limit groove, the lever is provided with a limit protrusion, and the limit protrusion extends at least partially into the limit groove to limit a movement track of the lever relative to the door body.

9. A switchgear comprising:

The cabinet body comprises a cabinet body and a cabinet door, wherein the cabinet door body is provided with at least one functional chamber, the cabinet door is used for opening or closing the functional chamber, the cabinet door is provided with a second locking part, and the second locking part is a clamping groove;

The switch cabinet lifting door apparatus as claimed in any one of claims 1 to 8, provided on the cabinet body;

The first locking part is a pin, the pin penetrates through the clamping groove, and the door body drives the pin to slide along the clamping groove, so that the door body and the cabinet door are in a locking or unlocking state.

10. The switchgear according to claim 9, characterized in that,

The clamping groove is L-shaped and comprises a first slotted hole and a second slotted hole which are perpendicular to each other, one end of the first slotted hole extends towards the side wall of the cabinet door to form an opening, and when the switch cabinet lifting door device and the cabinet door are in an unlocking state, the pin slides to the intersection of the first slotted hole and the second slotted hole so that the cabinet door can be pulled along the opening of the first slotted hole;

the cabinet door is provided with a plurality of clamping grooves, the door body is provided with a plurality of pins, and the pins correspond to the clamping grooves one by one.