CN112054405A

CN112054405A - Protective screen cabinet

Info

Publication number: CN112054405A
Application number: CN202010927953.8A
Authority: CN
Inventors: 冯永亮; 徐媛; 宁雪峰; 江栩铄
Original assignee: Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2020-12-08
Anticipated expiration: 2040-09-07
Also published as: CN112054405B

Abstract

The invention discloses a protective screen cabinet, which comprises a cabinet body, a plurality of pressure plate switches, a first rotating mechanism, a second rotating mechanism and a controller, wherein the plurality of pressure plate switches are arranged on the operation side surface of the cabinet body at intervals, each pressure plate switch comprises a pressure plate body, a first terminal seat and a second terminal seat, the two seats are arranged on the operation side surface at intervals, a locking screw is screwed on the first terminal seat, a rotating part is arranged on the second terminal seat, the first end of the pressure plate body is connected with the rotating part, a clamping notch is formed in the side edge of the pressure plate body, when the pressure plate body rotates to a closed position, the clamping notch is clamped with a stud of the locking screw, the first rotating mechanism is connected with the pressure plate body and used for driving the pressure plate body to rotate so as to switch between an open position and a closed position, the second rotating mechanism is connected with the locking screw and used for driving the locking screw to, the controller is electrically connected with the first rotating mechanism and the second rotating mechanism. The protection screen cabinet is simple to operate.

Description

Protective screen cabinet

Technical Field

The invention relates to the technical field of electrical equipment, in particular to a protection screen cabinet.

Background

The protection screen is provided with the clamp plate switch that quantity is very much usually on the counter, and every clamp plate switch can rotate to make the clamp plate switch have open position and closed position, after the clamp plate switch rotated closed position, need twist soon the housing screw and compress tightly the clamp plate switch, in order to guarantee that the clamp plate switch is not hard up, and then guarantees good electric conductance and leads to, and when the clamp plate switch need be opened, need unscrew earlier the housing screw and just can rotate the clamp plate switch. At present, the clamp plate switch is opened and closed to rotate the compression screw, the operation is completely completed manually, the number of the clamp plate switches on the protection screen cabinet is large, the workload of rotating the compression screw and the workload of rotating the clamp plate switch are very large, the operation difficulty is increased, and during manual operation, the force for rotating the compression screw is not easy to control, the compression screw is easy to rotate and is not tight, or the plastic protective shell outside the terminal seat for rotating the compression screw on the protection screen cabinet is crushed directly due to overlarge force.

Disclosure of Invention

The embodiment of the invention aims to: the protection screen cabinet is simple in structure, can automatically open or close the pressing plate switch, and effectively reduces operation difficulty.

To achieve the purpose, the embodiment of the invention adopts the following technical scheme:

the protection screen cabinet comprises a cabinet body, a plurality of pressure plate switches, a first rotating mechanism, a second rotating mechanism and a controller;

the plurality of the pressure plate switches are arranged on the operation side face of the cabinet body at intervals, each pressure plate switch comprises a pressure plate body, a first terminal seat and a second terminal seat, the first terminal seat and the second terminal seat are arranged on the operation side face at intervals, a first threaded hole is formed in the first terminal seat, a locking screw is screwed in the first threaded hole, a rotating part is arranged on the second terminal seat, the first end of the pressure plate body is connected with the rotating part, a clamping notch is formed in the side edge of the pressure plate body and is adjacent to the second end of the pressure plate body, the pressure plate body is provided with an opening position and a closing position, and when the pressure plate body rotates to the closing position, the clamping notch is clamped with a stud of the locking screw;

the first rotating mechanism is connected with the pressure plate body and used for driving the pressure plate body to rotate so as to switch between the opening position and the closing position;

the second rotating mechanism is connected with the locking screw and used for driving the locking screw to rotate;

the controller is connected with a control screen and is electrically connected with the first rotating mechanism and the second rotating mechanism.

As a preferred solution of the protection screen cabinet, a plurality of the pressure plate switches are arranged in a matrix on the operation side surface;

all the pressure plate bodies in each horizontal row can rotate simultaneously; and/or all of the locking screws of each row can be rotated simultaneously.

As a preferred scheme of the protection screen cabinet, a plurality of the pressing plate switches are arranged on the operation side surface in a matrix manner, the first rotating mechanism comprises two guide rails, the two guide rails are respectively arranged on two sides of the width direction of the operation side surface, a first sliding block is arranged on each guide rail, the first sliding block can move on the guide rails, a lifting seat is arranged on the first sliding block, the two lifting seats are connected through a cross beam, a plurality of first rotating shafts are arranged on the cross beam at intervals along the length direction of the cross beam, the number and the positions of the first rotating shafts correspond to those of all the pressing plate bodies in each horizontal row one by one, the first rotating shafts can rotate around the axes of the first rotating shafts, one end of each first rotating shaft is positioned on one side of the cross beam close to the operation side surface and is connected with a first driving gear, and the other end of each first rotating shaft is positioned on one side of the cross beam far away from the operation side surface after passing through the cross, the first driving piece is electrically connected with the controller, a first arc-shaped rack is fixed on the periphery of the first end of the pressing plate body, the center of the first rack is concentric with the rotating center of the pressing plate body, the lifting seat can lift in the direction perpendicular to the operation side face, when the lifting seat is located at a first position, the first rack is meshed with the first driving gear, and when the lifting seat is located at a second position, the first rack is separated from the first driving gear.

As a preferable scheme of the protection screen cabinet, the first driving member includes a first motor, an output shaft end of the first motor is connected with a first chain wheel, a second chain wheel is fixed to one end of the first rotating shaft, which is located at the end of the cross beam away from the operation side, and the first chain wheel is connected with all the second chain wheels through chains.

As a preferred scheme of the protection screen cabinet, a first driving member is arranged on one side of each first rotating shaft, the first driving member comprises a first motor, and the first motor is in transmission connection with the first rotating shaft through a gear set.

As a preferred scheme of the protection screen cabinet, a second threaded hole is formed in the second terminal seat, the rotating portion is a rotating screw, a through hole is formed in the first end of the pressing plate body, and the rotating screw penetrates through the through hole and is screwed into the second threaded hole.

As a preferred scheme of protection screen cabinet, the second rotary mechanism include rotatory sleeve and with the second driving piece that rotatory sleeve transmission is connected, the second driving piece with the controller electricity is connected, rotatory sleeve has the opening and faces the groove is twisted to the operation side, the nut of lock screw can insert twist in the groove, the drive of second driving piece rotatory sleeve rotates, rotatory sleeve drives the nut rotates.

As a preferred scheme of the protective screen cabinet, the second rotating mechanisms are arranged on the beam, and one second rotating mechanism is arranged corresponding to each locking screw.

As a preferred scheme of the protection screen cabinet, a second sliding block is arranged on the cross beam in a sliding mode along the length direction of the cross beam, a supporting rod is connected to the second sliding block, and a second rotating mechanism is arranged at the end portion of the supporting rod.

As a preferable scheme of the protective screen cabinet, an avoidance area is arranged at a position, adjacent to the top or the bottom of the cabinet body, of the operation side, and the cross beam can move to the avoidance area.

The embodiment of the invention has the beneficial effects that: through setting up two rotary mechanism of controller automatic control, can realize that clamp plate body autogiration and locking screw are automatic to twist soon, whole process need not operator manual operation, safe and reliable, and the manipulation strength is low, and in addition, the autogiration control locking screw is rotatory, and rotatory dynamics and angle can all obtain unified control, can not appear locking screw and twist the condition emergence of not tightly or the too big dynamics of revolving, prevent effectively that the outer protective housing of terminal seat from damaging.

Drawings

The invention is explained in more detail below with reference to the figures and examples.

Fig. 1 is a schematic front view of a protection screen cabinet according to an embodiment of the present invention.

Fig. 2 is a schematic side view of the protection cabinet according to the embodiment of the invention (the second rotating mechanism is not shown, and the first driving gear is not engaged with the first rack).

Fig. 3 is a schematic side view of the protection cabinet according to the embodiment of the invention (the second rotating mechanism is not shown, and the first driving gear is engaged with the first rack).

Fig. 4 is a schematic cross-sectional view of a platen switch at a-a (locking screw not compressing platen body) according to an embodiment of the present invention.

Fig. 5 is a schematic cross-sectional view of a pressure plate switch at a-a of an embodiment of the present invention (the locking screw presses against the pressure plate body).

In the figure:

1. a cabinet body; 11. an operation side; 12. an avoidance zone; 2. a press plate switch; 21. a pressing plate body; 211. a first end; 212. a second end; 213. clamping the notch; 214. a first rack; 22. a first terminal base; 221. a first threaded hole; 23. a second terminal block; 24. locking the screw; 241. a stud; 242. a nut; 25. rotating the screw; 3. a first rotating mechanism; 31. a guide rail; 32. a first slider; 33. a lifting seat; 34. a cross beam; 35. a first rotating shaft; 36. a first drive gear; 37. a first driving member; 371. a first motor; 372. a first sprocket; 373. a second sprocket; 374. a chain; 4. a second rotating mechanism; 41. rotating the sleeve; 42. a second driving member; 5. a second slider; 6. a support bar; 7. and a third driving member.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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 invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 5, a protection screen cabinet according to an embodiment of the present invention includes a cabinet body 1, a plurality of platen switches 2, a first rotating mechanism 3, a second rotating mechanism 4, and a controller (not shown in the figures), wherein the plurality of platen switches 2 are disposed at intervals on an operation side 11 of the cabinet body 1, each platen switch 2 includes a platen body 21, a first terminal base 22, and a second terminal base 23, the first terminal base 22 and the second terminal base 23 are disposed at intervals on the operation side 11, the first terminal base 22 is provided with a first threaded hole 221, a locking screw 24 is screwed into the first threaded hole 221, the second terminal base 23 is provided with a rotating portion, a first end 211 of the platen body 21 is connected to the rotating portion, a clamping notch 213 is formed in a side edge of the platen body 21, and the clamping notch 213 is adjacent to a second end 212 of the platen body 21, the clamp plate body 21 has open position and closed position, works as when clamp plate body 21 is rotatory to closed position, joint breach 213 with locking screw 24's double-screw bolt 241 joint, first rotary mechanism 3 with clamp plate body 21 is connected for the drive clamp plate body 21 is rotatory with open position with the closed position switches, second rotary mechanism 4 with locking screw 24 is connected for the drive locking screw 24 rotates, the controller is connected with the control panel, the controller with first rotary mechanism 3 with second rotary mechanism 4 electricity is connected. Through setting up two rotary mechanism of controller automatic control, can realize that clamp plate body 21 autogiration and locking screw 24 revolve soon automatically, whole process need not operator manual operation, safe and reliable, and the manipulation strength is low, and in addition, the autogiration control locking screw 24 is rotatory, and rotatory dynamics and angle can all be controlled in unison, can not appear locking screw 24 and revolve the condition emergence of screwing not tightly or the dynamics too big, prevent effectively that the protective housing outside the terminal seat from damaging.

In this embodiment, the control screen is a touch screen, and the touch screen can be operated by touch without setting an operation button or the like. In other embodiments, an operation button can be set for operation.

In one embodiment, the plurality of press plate switches 2 are arranged on the operation side surface 11 in a matrix, N horizontal rows M vertical columns of press plate switches 2 are arranged on the operation side surface 11, wherein N and M are both greater than or equal to 2.

In this embodiment, the first rotating mechanism 3 includes two guide rails 31, the two guide rails 31 are respectively disposed on two sides of the width direction of the operation side surface 11, each guide rail 31 is provided with a first slider 32, the first slider 32 can move on the guide rail 31, the first slider 32 is provided with a lifting seat 33, the two lifting seats 33 are connected by a cross beam 34, the cross beam 34 is provided with a plurality of first rotating shafts 35 at intervals along the length direction thereof, the number and the positions of the first rotating shafts 35 correspond to the number and the positions of all the pressing plate bodies 21 in each horizontal row one by one, the first rotating shafts 35 can rotate around their axes, one end of the first rotating shaft 35 is located on one side of the cross beam 34 close to the operation side surface 11 and is connected with a first driving gear 36, and the other end of the first rotating shaft passes through the cross beam 34 and is located on one side of the cross beam 34 away from the operation side surface 11 and is connected with a first driving gear 37, the first driving member 37 is electrically connected to the controller, an arc-shaped first rack 214 is fixed to the periphery of the first end 211 of the pressing plate body 21, the center of the first rack 214 is concentric with the rotation center of the pressing plate body 21, the lifting seat 33 can lift in the direction perpendicular to the operation side surface 11, when the lifting seat 33 is located at the first position, the first rack 214 is engaged with the first driving gear 36, and when the lifting seat 33 is located at the second position, the first rack 214 is separated from the first driving gear 36. The movable cross beam 34 can not only move the first driving gear 36 to the position of the first rack 214 of the corresponding platen body 21, so that the first driving gear 36 can be meshed with the first rack 214, and further the first driving gear 36 drives the platen body 21 to rotate under the driving of the first driving part 37, but also the arrangement of the lifting seat 33 can change the distance from the cross beam 34 to the operation side 11, so as to ensure that the cross beam 34 can move to the platen switches 2 of each horizontal row without being obstructed, and the first rotating mechanism 3 is arranged in a moving and lifting structure, so that one rotating mechanism can operate all the platen switches 2 on the cabinet body 1, thereby reducing the manufacturing cost.

Alternatively, all the platen bodies 21 of each horizontal row can be rotated simultaneously, and a row of a plurality of platen bodies 21 can be rotated simultaneously, which can greatly improve the operation efficiency.

Specifically, the first driving member 37 includes a first motor 371, a first sprocket 372 is connected to an output shaft end of the first motor 371, a second sprocket 373 is fixed to an end of the first rotating shaft 35, which is located on the cross beam 34 and away from the operation side 11, and the first sprocket 372 and all the second sprockets 373 are connected by a chain 374. When first motor 371 starts, first sprocket 372 rotates and passes through chain 374 drives all second sprocket 373 synchronous revolution, second sprocket 373 rotates and can drive first drive gear 36 rotates, and first drive gear 36 drives first rack 214 and rotates, and first rack 214 drives clamp plate body 21 and rotates, and when clamp plate body 21 clockwise rotates, can rotate to the closed position, and when clamp plate body 21 anticlockwise rotates, can rotate to the open position. The cooperation of the motor, the chain 374 and the chain wheel can enable all the first driving gears 36 on the cross beam 34 to synchronously and unidirectionally rotate, so that the pressing plate bodies 21 in each transverse row synchronously rotate and are simultaneously located at the closed position or the open position, the operation is simple, and the efficiency is high.

The first driving member 37 is not limited to a structure using a motor, a chain 374 and a chain wheel, but may be a structure using a motor, a gear and a rack, or other power structure capable of driving the first rotating shaft 35 and the first driving gear 36 to rotate.

The pressing plate bodies 21 in each horizontal row are not limited to be driven to rotate synchronously, and the corresponding pressing plate bodies 21 can be selected to rotate according to requirements, for example, a first driving part 37 is arranged on one side of each first rotating shaft 35, the first driving part 37 comprises a first motor 371, and the first motor 371 is in transmission connection with the first rotating shaft 35 through a gear set.

In an embodiment, the second rotating mechanism 4 includes a rotating sleeve 41 and a second driving member 42 in transmission connection with the rotating sleeve 41, the second driving member 42 is electrically connected to the controller, the rotating sleeve 41 has a slot with an opening facing the operation side 11, the nut 242 of the locking screw 24 can be inserted into the slot, the second driving member 42 drives the rotating sleeve 41 to rotate, the rotating sleeve 41 drives the nut 242 to rotate, and the nut 242 rotates to enable the locking screw 24 to rotate to press the pressing plate body 21 or loosen from the pressing plate body 21.

In this embodiment, the second rotating mechanisms 4 are disposed on the cross beam 34, and one second rotating mechanism 4 is disposed corresponding to each locking screw 24. The second rotating mechanisms 4 corresponding to each other are arranged for the pressure plate switches 2 in each horizontal row, all the locking screws 24 can be screwed at the same time, or partial locking screws 24 in the same horizontal row can be selectively screwed, if all the locking screws 24 are screwed at the same time, the controller controls all the second rotating mechanisms 4 on the cross beam 34 to be started, and if only partial locking screws 24 need to be screwed, the controller can control the corresponding second rotating mechanisms 4 to be started.

In other embodiments, the cross beam 34 is provided with a second sliding block 5 sliding along the length direction thereof, the second sliding block 5 is connected with a supporting rod 6, and the end of the supporting rod 6 is provided with the second rotating mechanism 4. This design can reduce the number of the second rotating mechanisms 4, and reduce the cost.

The end of the supporting rod 6 is provided with the rotating sleeve 41, the second slider 5 is in transmission connection with the third driving element 7, and the third driving element 7 can drive the second slider 5 to move along the length direction of the cross beam 34, so that the rotating sleeve 41 can move right above the corresponding locking screw 24. In this embodiment, third driving piece 7 can be motor, lead screw and guide bar complex structure, and specifically, third driving piece 7 includes the motor, the output shaft end of motor is connected with the lead screw, and lead screw and the cooperation of second slider 5, the one end that the motor was kept away from to the lead screw are rotated with the support and are connected, are provided with the guide bar parallel with the lead screw on the support, and the other end of guide bar is provided with another support, corresponds the guide bar on the second slider 5 and has seted up the guiding hole, and the guide bar runs through the guiding hole, and second slider 5 can follow rectilinear movement under the cooperation of lead screw and guide bar. The third driving member 7 may also be another structure capable of driving the second sliding block 5 to move, such as an air cylinder, an end of a piston rod of the air cylinder is connected to the second sliding block 5, and the air cylinder is activated to push the second sliding block 5 to move on the cross beam 34.

The first slide block 32 is connected with a fourth driving part, the fourth driving part can drive the first slide block 32 to move, the fourth driving part is electrically connected with the controller, and the structure of the fourth driving part is similar to that of the third driving part 7.

In an embodiment, the second terminal base 23 is provided with a second threaded hole, the rotating portion is a rotating screw 25, the first end 211 of the pressing plate body 21 is provided with a through hole, and the rotating screw 25 passes through the through hole and is screwed into the second threaded hole.

The pressing plate switch 2 can be automatically operated by the first rotating mechanism 3 and the second rotating mechanism 4, and can be manually operated, and electric shock is not required to be avoided during manual operation, so that a plastic pulling part is arranged on the pressing plate body 21, and meanwhile, a plastic protective shell is formed outside the nut 242 of the locking screw 24 and the nut of the rotating screw 25 in an injection molding mode.

In order to avoid the first rotating mechanism 3 from obstructing the operation during manual operation, an avoidance area 12 is arranged at a position of the operation side 11 adjacent to the top or the bottom of the cabinet body 1, and the cross beam 34 can move to the avoidance area 12.

In the description herein, it is to be understood that the terms "upper" and the like are based on the orientation or positional relationship shown in the drawings, which are for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.

In the description herein, references to the term "an embodiment" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. The utility model provides a protection screen cabinet, includes the cabinet body, its characterized in that still includes:

the pressing plate switch comprises a pressing plate body, a first terminal seat and a second terminal seat, wherein the first terminal seat and the second terminal seat are arranged on the operation side face at intervals, a first threaded hole is formed in the first terminal seat, a locking screw is screwed in the first threaded hole, a rotating part is arranged on the second terminal seat, the first end of the pressing plate body is connected with the rotating part, a clamping notch is formed in the side edge of the pressing plate body and is adjacent to the second end of the pressing plate body, the pressing plate body is provided with an opening position and a closing position, and when the pressing plate body rotates to the closing position, the clamping notch is clamped with a stud of the locking screw;

the controller is connected with a control screen and electrically connected with the first rotating mechanism and the second rotating mechanism.

2. The protective screen cabinet of claim 1, wherein a plurality of the platen switches are arranged in a matrix on the operative side;

3. The protection screen cabinet as claimed in claim 1, wherein the plurality of platen switches are arranged in a matrix on the operation side surface, the first rotating mechanism includes two guide rails, the two guide rails are respectively arranged on two sides of the width direction of the operation side surface, each guide rail is provided with a first slider, the first slider can move on the guide rail, the first slider is provided with a lifting seat, the two lifting seats are connected through a cross beam, the cross beam is provided with a plurality of first rotating shafts at intervals along the length direction thereof, the number and positions of the first rotating shafts correspond to those of all the platen bodies in each horizontal row one by one, the first rotating shafts can rotate around the axes thereof, one end of the first rotating shaft is located on one side of the cross beam close to the operation side surface and is connected with a first driving gear, the other end passes be located behind the crossbeam deviates from one side of operation side and be connected with first driving piece transmission, first driving piece with the controller electricity is connected, the periphery of the first end of clamp plate body is fixed with curved first rack, the center of first rack with the center of rotation of clamp plate body is concentric, the seat that goes up and down can be followed the perpendicular to the direction lift of operation side, works as when the seat that goes up and down is located the primary importance, first rack with first drive gear meshes, works as when the seat that goes up and down is located the second place, first rack with first drive gear separation.

4. The protective screen cabinet of claim 3, wherein the first driving member comprises a first motor, a first sprocket is connected to an output shaft end of the first motor, a second sprocket is fixed to an end of the first shaft end, which is located at the end of the cross beam away from the operation side, and the first sprocket and all the second sprockets are connected through a chain.

5. The protective screen cabinet of claim 3, wherein a first driving member is disposed on one side of each first rotating shaft, the first driving member comprises a first motor, and the first motor is in transmission connection with the first rotating shaft through a gear set.

6. The protection screen cabinet of claim 1, wherein the second terminal block is provided with a second threaded hole, the rotating portion is a rotating screw, the first end of the pressing plate body is provided with a through hole, and the rotating screw passes through the through hole and is screwed into the second threaded hole.

7. The protection screen cabinet of any one of claims 1 to 6, wherein the second rotating mechanism comprises a rotating sleeve and a second driving member in transmission connection with the rotating sleeve, the second driving member is electrically connected with the controller, the rotating sleeve is provided with a screwing groove with an opening facing the operation side surface, a nut of the locking screw can be inserted into the screwing groove, the second driving member drives the rotating sleeve to rotate, and the rotating sleeve drives the nut to rotate.

8. The protection screen cabinet of claim 3, wherein the second rotating mechanisms are disposed on the beam, and one second rotating mechanism is disposed corresponding to each locking screw.

9. The protective screen cabinet as claimed in claim 3, wherein the beam is provided with a second sliding block along the length direction thereof, the second sliding block is connected with a supporting rod, and the end of the supporting rod is provided with the second rotating mechanism.

10. A protective screen cabinet according to claim 3, wherein the operating side is provided with an escape area adjacent to the top or bottom of the cabinet body, the cross beam being movable to the escape area.