Hydraulic and electric dual-power opening and closing heavy shielding door of microwave anechoic chamber

Abstract

The invention relates to the field of microwave anechoic chamber heavy shielding doors, in particular to a hydraulic and electric dual-power opening and closing microwave anechoic chamber heavy shielding door which comprises an upper end guide rail, a lower end guide rail, an upper end guide rail pulley unit, a lower end guide rail pulley unit, a heavy shielding door body and a door frame. The upper-end guide rail and the lower-end guide rail are respectively fixed on the upper side and the lower side of the door frame; the heavy shielding door is respectively connected with the upper-end guide rail and the lower-end guide rail through the upper-end guide rail pulley unit and the lower-end guide rail pulley unit; the device further comprises a horizontal displacement hydraulic driving unit, an electric driving unit, an opening and closing lock and a door frame locking device. The horizontal displacement hydraulic driving unit drives the heavy shielding door to horizontally move along the upper end guide rail and the lower end guide rail; the electric driving unit drives the unlocking and locking lock and the door frame locking device to achieve opening and closing of the heavy shielding door. The heavy shielding door is controlled through hydraulic and electric dual power, the working characteristic and the load-bearing safety of the heavy shielding door are improved, and the power of a carried motor and the equipment cost are reduced.

Description

Technical Field

[0001] The invention relates to the field of heavy-duty shielding doors for microwave darkrooms, in particular to a heavy-duty shielding door for microwave darkrooms that is opened and closed by hydraulic and electrical dual-power. Background Art

[0002] As the demand for electronic equipment functions is increasing, the number of electronic devices installed in large equipment is becoming increasingly dense. Dense electronic devices form electromagnetic wave fields with different powers and frequencies. Complex electromagnetic wave fields can cause negative effects such as electromagnetic interference and information security risks. Therefore, testing and analyzing the characteristics of electromagnetic waves generated by electronic equipment is crucial to dealing with electromagnetic interference.

[0003] The microwave darkroom provides an ideal test site for electromagnetic testing. It is a test site built by combining metal shielding and absorbing materials. The test electronic equipment can be free from electromagnetic interference from other equipment, creating a pure electromagnetic environment, thereby improving the test accuracy and efficiency. Among the components of the microwave darkroom, the most important is the heavy-duty shielding door. Since the microwave darkroom requires test personnel to enter and exit and the replacement of test equipment, the heavy-duty shielding door has frequent opening and closing operations. At present, the existing heavy-duty shielding doors have two opening and closing methods: electric and pneumatic. Electric heavy-duty shielding doors are completely powered by motors, and usually require four or six motors to complete the opening and closing operations. The pneumatic heavy-duty shielding door relies on the motor to drive the air compressor to provide compressed gas to compress the shielding door to form a closed space.

[0004] By comparing and analyzing the opening and closing methods of the existing heavy-duty shielding doors in microwave darkrooms, it can be seen that both electric and pneumatic heavy-duty shielding doors can be used normally, but they have disadvantages such as high drive motor power, high cost and high noise at the operation site. Therefore, it is of vital significance to improve the heavy-duty shielding doors in microwave darkrooms to improve their working performance and reduce costs. Summary of the invention

[0005] In order to overcome the deficiencies in the prior art, a heavy-duty shielded door for a microwave darkroom is provided which is opened and closed with hydraulic and electrical dual power. The power of the motor of the heavy-duty shielded door, the dead weight of the heavy-duty shielded door and the equipment cost are reduced by using hydraulic and electrical dual power, thereby improving the working characteristics of the heavy-duty shielded door opening and closing and the load-bearing safety of the microwave darkroom.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A heavy-duty shielding door for a microwave darkroom with hydraulic and electrical dual-power opening and closing, comprising an upper guide rail, a lower guide rail, a heavy-duty shielding door and a door frame, wherein the upper guide rail and the lower guide rail are respectively fixedly arranged on the upper and lower sides of the door frame, and the heavy-duty shielding door is respectively connected to the upper guide rail and the lower guide rail through an upper guide rail pulley unit and a lower guide rail pulley unit; It also includes a horizontal displacement hydraulic drive unit, an electric drive unit, an opening and closing lock and a door frame locking device; the horizontal displacement hydraulic drive unit is connected to the heavy-duty shielding door and drives the heavy-duty shielding door to move along the upper guide rail and the lower guide rail; the electric drive unit is arranged on the heavy-duty shielding door, and the electric drive unit drives the opening and closing lock to cooperate with the door frame locking device to realize opening and closing.

[0007] Preferably, the electrical drive unit includes an opening and closing motor, two opening and closing locks and two control rods. The opening and closing motor is fixedly arranged on the heavy-duty shielding door. The two control rods are rotatably arranged on the left and right sides of the heavy-duty shielding door respectively. The two opening and closing locks are respectively arranged at the outer ends of the two control rods. The inner ends of the two control rods are connected to the motor shaft of the opening and closing motor through a transmission structure. When the motor shaft of the opening and closing motor rotates, the two control rods are driven to rotate synchronously. When the control rods rotate, the corresponding opening and closing locks are driven to rotate, thereby hooking or releasing the card column in the door frame locking device.

[0008] Preferably, two electrical drive units are provided, and the two electrical drive units are respectively arranged on the upper and lower sides of the heavy shielding door.

[0009] Preferably, the door frame locking device further comprises a sealing stop spring, a double-wing wire mesh pad and a double-type inserting knife, the double-wing wire mesh pad is fixedly arranged on the heavy shield door, two sealing stop springs are respectively located on both sides of the double-wing wire mesh pad, the double-type inserting knife is floatingly arranged on the door frame, and the clamping column is fixedly connected to the double-type inserting knife; When the opening and closing lock hooks the clamping column, it drives the double-type inserting knife to insert the two sealing stop springs and compress the double-wing-shaped wire mesh pad.

[0010] Preferably, the motor shaft of the opening and closing motor is connected to a driving bevel gear via a coupling, and the inner ends of the control rods are connected to a passive bevel gear meshing with the driving bevel gear.

[0011] Preferably, the horizontal displacement hydraulic drive unit comprises two horizontal displacement hydraulic cylinders arranged one above the other, the cylinder bodies of the horizontal displacement hydraulic cylinders are fixed to the door frame through clamps, and the piston rods of the horizontal displacement hydraulic cylinders are connected to the heavy shield door.

[0012] Preferably, the two horizontal displacement hydraulic cylinders are connected to the control proportional valve pipeline, the control proportional valve is connected to the hydraulic pump pipeline, the hydraulic pump is mechanically connected to the motor, and the hydraulic pump is connected to the hydraulic oil tank through the pipeline.

[0013] Preferably, it also includes an on-off controller, and the on-off motor, the control proportional valve, and the motor are all controlled by the on-off controller.

[0014] Preferably, the upper guide rail pulley unit and the lower guide rail pulley unit each include a base, a pulley connecting rod and at least two pulleys, the base is fixedly arranged on the heavy shielding door, the pulley is connected to the base, and adjacent pulleys are connected by a pulley connecting rod; The pulley is located in the corresponding upper guide rail or lower guide rail.

[0015] Preferably, the opening and closing motor is a servo motor or a power motor. When a power motor is used, the power of the two opening and closing motors is the same.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention adopts a hydraulic system to drive the heavy-duty shielding door to move, and adopts an electrical system to control the locking of the heavy-duty shielding door. By taking advantage of the high power density, flexible control and impact resistance of the hydraulic system, the working characteristics of the heavy-duty shielding door opening and closing are improved, and the power of the motor carried by the heavy-duty shielding door is reduced. The total cost of the equipment carried by the system and the deadweight of the heavy-duty shielding door are reduced, and the load-bearing safety of the steel structure of the microwave darkroom is improved. The operating noise of the heavy-duty shielding door opening and closing in the microwave darkroom is significantly reduced, creating a more comfortable testing environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the door frame locking device of the present invention; In the figure: 1. upper guide rail; 2. lower guide rail; 3. heavy-duty shielding door; 4. door frame; 5. upper guide rail pulley unit; 5-1. pulley; 5-2. pulley connecting rod; 5-3. base; 6-lower guide rail pulley unit; 7. horizontal displacement hydraulic drive unit; 7-1. horizontal displacement hydraulic cylinder; 7-2. clamp; 7-3. control proportional valve; 7-4. hydraulic pump; 7-5. motor; 7-6. oil tank; 8. electric drive unit; 8-1. opening and closing motor; 8-2. coupling; 8-3. active bevel gear; 8-4. passive bevel gear; 8-5. control lever; 8-6. opening and closing lock; 9. opening and closing controller; 10. door frame locking device; 10-1. clamping column; 10-2. sealing stop spring; 10-3. double-wing wire mesh pad; 10-4. double-type insert knife. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example: like Figure 1 to Figure 2As shown, a heavy-duty shielding door for a microwave darkroom with hydraulic and electrical dual power for opening and closing includes an upper guide rail 1, a lower guide rail 2, a heavy-duty shielding door 3, a door frame 4, an upper guide rail pulley unit 5, a lower guide rail pulley unit 6, a horizontal displacement hydraulic drive unit 7, an electric drive unit 8, an opening and closing lock 8-6 and a door frame locking device 10. The upper guide rail 1 and the lower guide rail 2 are respectively fixedly arranged on the upper and lower sides of the door frame 4 for providing support and guidance for the heavy-duty shielding door 3. The heavy-duty shielding door 3 is connected to the upper guide rail 1 and the lower guide rail 2 through the upper guide rail pulley unit 5 and the lower guide rail pulley unit 6 respectively. Specifically, the upper guide rail pulley unit 5 and the lower guide rail pulley unit 6 each include a base 5-3, a pulley connecting rod 5-2 and at least two pulleys 5-1. The number of pulleys 5-1 can be set according to the mass and size of the heavy-duty shielding door 3. The number of bases 5-3 corresponds to the number of pulleys 5-1. The base 5-3 is fixedly set on the heavy-duty shielding door 3. The pulley 5-1 is connected to the base 5-3. Adjacent pulleys 5-1 are connected by a pulley connecting rod 5-2. The pulley 5-1 is located in the corresponding upper guide rail 1 or lower guide rail 2 and moves along it.

[0021] The horizontal displacement hydraulic drive unit 7 is connected to the heavy-duty shielding door 3 and drives the heavy-duty shielding door 3 to move along the upper guide rail 1 or the lower guide rail 2; specifically, the horizontal displacement hydraulic drive unit 7 includes two horizontal displacement hydraulic cylinders 7-1 arranged up and down.

[0022] The cylinder body of the upper horizontal displacement hydraulic cylinder 7-1 is fixedly connected to the door frame 4 through the clamp 7-2, and the piston rod of the horizontal displacement hydraulic cylinder 7-1 is connected to the heavy shield door 3. Both horizontal displacement hydraulic cylinders 7-1 are connected to the control proportional valve 7-3 pipeline, the control proportional valve 7-3 is connected to the hydraulic pump 7-4 pipeline, the hydraulic pump 7-4 is mechanically connected to the motor 7-5, and the hydraulic pump 7-4 is connected to the hydraulic oil tank 7-6 through a pipeline.

[0023] The motor 7-5 drives the hydraulic pump 7-4 to work, and the hydraulic pump 7-4 supplies oil to the two horizontal displacement hydraulic cylinders 7-1 through the pipeline and the control proportional valve 7-3, and the control proportional valve 7-3 controls the on-off and oil supply direction of the oil supply pipeline. The maximum stroke of the two horizontal displacement hydraulic cylinders can meet the horizontal displacement distance of the heavy shield door 3 during the opening and closing process.

[0024] The electric drive unit 8 is arranged on the heavy shield door 3, and the electric drive unit 8 drives the opening and closing lock 8-6 to cooperate with the door frame locking device 10 to realize opening and closing. Preferably, two electric drive units 8 are arranged, and the two electric drive units 8 are arranged on the upper and lower sides of the heavy shield door 3 respectively.

[0025] The two electric drive units 8 each include two opening and closing motors 8-1, two control rods 8-5 and two opening and closing locks 8-6. The opening and closing motors 8-1 are fixedly arranged on the heavy-duty shielding door 3. The two control rods 8-5 are rotatably arranged on the left and right sides of the heavy-duty shielding door 3, and the two opening and closing locks 8-6 are arranged on the outer ends of the two control rods 8-5. When the control rods 8-5 rotate, the corresponding opening and closing locks 8-6 are driven to rotate, thereby hooking or releasing the clamping column 10-1 in the door frame locking device 10, and realizing the closing or opening of the heavy-duty shielding door 3 and the door frame 4.

[0026] The inner ends of the two control rods 8-5 are connected to the motor shaft of the opening and closing motor 8-1 through a transmission structure; when the motor shaft of the opening and closing motor 8-1 rotates, the two control rods 8-5 are driven to rotate synchronously.

[0027] The transmission structure can adopt a bevel gear structure, specifically, the motor shaft of the opening and closing motor 8-1 is connected to the active bevel gear 8-3 through the coupling 8-2, and the inner end of the control rod 8-5 is connected to the passive bevel gear 8-4 meshing with the active bevel gear 8-3. The opening and closing motor 8-1 drives the active bevel gear 8-3 to rotate, and then the transmission effect of the passive bevel gear 8-4 and the active bevel gear 8-3 drives the control rod 8-5 to rotate.

[0028] The heavy-duty shielding door 3 of the present invention is mainly used in large microwave darkrooms. In order to ensure the shielding effect of the heavy-duty shielding door 3, the door frame locking device 10 also includes a sealing stop spring 10-2, a double-wing wire mesh pad 10-3 and a double-type blade 10-4. The double-wing wire mesh pad 10-3 is fixedly arranged on the heavy-duty shielding door 3, two sealing stop springs 10-2 are respectively located on both sides of the double-wing wire mesh pad 10-3, the double-type blade 10-4 is floatingly arranged on the door frame, and the clamping column 10-1 is fixedly connected to the double-type blade 10-4. The number of double-type blades is two blades, three blades and four blades.

[0029] When the opening and closing lock 8-6 is driven by the opening and closing motor 8-1 to hook the clamping column 10-1, the clamping column 0-1 and the double-type blade 0-4 fixed thereto are pulled to move, and the double-type blade 0-4 is inserted between the two sealing stop springs 10-2 and presses the double-wing wire mesh pad 10-3, effectively improving the shielding efficiency of the heavy shielding door.

[0030] The opening and closing motor 8-1, the control proportional valve 7-3, and the motor 7-5 are all controlled by the opening and closing controller 9 to ensure the coordination between the opening and closing motor 8-1, the control proportional valve 7-3, and the motor 7-5. Preferably, the opening and closing motor 8-1 is a servo motor or a power motor with high control accuracy. When a power motor is used, the power of the two opening and closing motors 8-1 is the same.

[0031] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. A heavy-duty shielding door for a microwave darkroom with hydraulic and electrical dual power opening and closing, comprising an upper guide rail (1), a lower guide rail (2), a heavy-duty shielding door (3) and a door frame (4), wherein the upper guide rail (1) and the lower guide rail (2) are fixedly arranged on the upper and lower sides of the door frame (4), respectively, and the heavy-duty shielding door (3) is connected to the upper guide rail (1) and the lower guide rail (2) through an upper guide rail pulley unit (5) and a lower guide rail pulley unit (6), respectively; characterized in that: It also includes a horizontal displacement hydraulic drive unit (7), an electric drive unit (8), an opening and closing lock (8-6) and a door frame locking device (10); the horizontal displacement hydraulic drive unit (7) is connected to the heavy-duty shielding door (3) and drives the heavy-duty shielding door (3) to move along the upper guide rail (1) and the lower guide rail (2); the electric drive unit (8) is arranged on the heavy-duty shielding door (3), and the electric drive unit (8) drives the opening and closing lock (8-6) to cooperate with the door frame locking device (10) to realize opening and closing.

2. According to claim 1, a heavy-duty shielded door for microwave darkroom with hydraulic and electrical dual power opening and closing, characterized in that: The electric drive unit (8) comprises an opening and closing motor (8-1), two opening and closing locks (8-6) and two control rods (8-5); the opening and closing motor (8-1) is fixedly arranged on the heavy-duty shielding door (3); the two control rods (8-5) are rotatably arranged on the left and right sides of the heavy-duty shielding door (3); the two opening and closing locks (8-6) are respectively arranged on the outer ends of the two control rods (8-5); the inner ends of the two control rods (8-5) are connected to the motor shaft of the opening and closing motor (8-1) through a transmission structure; when the motor shaft of the opening and closing motor (8-1) rotates, the two control rods (8-5) are driven to rotate synchronously; when the control rods (8-5) rotate, the corresponding opening and closing locks (8-6) are driven to rotate, thereby locking or releasing the clamping column (10-1) in the door frame locking device (10).

3. According to claim 2, a heavy-duty shielded door for microwave darkroom opening and closing with hydraulic and electrical dual power, characterized in that: Two electrical drive units (8) are provided, and the two electrical drive units (8) are respectively provided on the upper and lower sides of the heavy-duty shielding door (3).

4. According to claim 2, a heavy-duty shielded door for microwave darkroom opening and closing with hydraulic and electrical dual power, characterized in that: The door frame locking device (10) further comprises a sealing stop spring (10-2), a double-wing wire mesh pad (10-3) and a double-type insert blade (10-4); the double-wing wire mesh pad (10-3) is fixedly arranged on the heavy shield door (3); two sealing stop springs (10-2) are respectively located on both sides of the double-wing wire mesh pad (10-3); the double-type insert blade (10-4) is floatingly arranged on the door frame (4); and the clamping column (10-1) is fixedly connected to the double-type insert blade (10-4); When the opening and closing lock (8-6) hooks the clamping column (10-1), it drives the double-type inserting knife (10-4) to insert the two sealing stop springs (10-2) and press the double-wing-shaped wire mesh pad (10-3).

5. According to claim 2, a heavy-duty shielded door for microwave darkroom opening and closing with hydraulic and electrical dual power, characterized in that: The motor shaft of the opening and closing motor (8-1) is connected to a driving bevel gear (8-3) via a coupling (8-2), and the inner ends of the control rods (8-5) are connected to a passive bevel gear (8-4) meshing with the driving bevel gear (8-3).

6. The heavy-duty shielded door for microwave darkroom with hydraulic and electrical dual power opening and closing according to claim 1 is characterized by: The horizontal displacement hydraulic drive unit (7) comprises two horizontal displacement hydraulic cylinders (7-1) arranged one above the other, the cylinder bodies of the horizontal displacement hydraulic cylinders (7-1) being fixed to the door frame (4) via a clamp (7-2), and the piston rods of the horizontal displacement hydraulic cylinders (7-1) being connected to the heavy shield door (3).

7. The heavy-duty shielded door for microwave darkroom with hydraulic and electrical dual power opening and closing according to claim 6 is characterized by: The two horizontal displacement hydraulic cylinders (7-1) are connected to the control proportional valve (7-3) through a pipeline, the control proportional valve (7-3) is connected to the hydraulic pump (7-4) through a pipeline, the hydraulic pump (7-4) is mechanically connected to the motor (7-5), and the hydraulic pump (7-4) is connected to the hydraulic oil tank (7-6) through a pipeline.

8. The heavy-duty shielded door for microwave darkroom with hydraulic and electrical dual power opening and closing according to claim 7 is characterized by: It also includes an on-off controller (9), and the on-off motor (8-1), the control proportional valve (7-3), and the motor (7-5) are all controlled by the on-off controller (9).

9. The heavy-duty shielded door for microwave darkroom with hydraulic and electrical dual power opening and closing according to claim 1 is characterized by: The upper guide rail pulley unit (5) and the lower guide rail pulley unit (6) each comprise a base (5-3), a pulley connecting rod (5-2) and at least two pulleys (5-1); the base (5-3) is fixedly arranged on the heavy shielding door (3); the pulleys (5-1) are connected to the base (5-3); and adjacent pulleys (5-1) are connected via pulley connecting rods (5-2); The pulley (5-1) is located in the corresponding upper guide rail (1) or lower guide rail (2).

10. The heavy-duty shielded door for microwave darkroom with hydraulic and electrical dual power opening and closing according to claim 3 is characterized by: The opening and closing motor (8-1) is a servo motor or a power motor. When a power motor is used, the power of the two opening and closing motors (8-1) is the same.

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