CN211776730U - Liftable bearing platform for translational electromagnetic shielding door - Google Patents

Abstract

The utility model discloses a liftable load-bearing platform for translation electromagnetic shield door, it includes the bearer frame subassembly, the mesa subassembly, elevating system, horizontal translation mechanism and direction setting element, the bearer frame subassembly is suitable for the mesa subassembly that bears its top, the groined type net that the bearer frame subassembly formed by a plurality of strong points is constituteed, the strong point one-to-one on the bearing point on the bearer frame subassembly and the mesa subassembly, elevating system is located the below of mesa subassembly and is used for going up and down to the mesa subassembly, horizontal translation mechanism links to each other with the bottom of mesa subassembly and is used for carrying out the translation to the mesa subassembly, the direction setting element is used for bearing it after the mesa subassembly sinks. The utility model provides a translation electromagnetic shield is liftable load-bearing platform for door, it bears the weight, goes up and down and the translation is reliable steady.

Description

Liftable bearing platform for translational electromagnetic shielding door

Technical Field

The utility model relates to a translation electromagnetic shield is liftable load-bearing platform for door belongs to electromagnetic shield door technical field.

Background

At present, with the implementation of the national mandatory standard for electromagnetic compatibility of electronic information electric industry products, darkroom and simulation technologies are widely applied. The size of a measured object required by the system is larger and larger from small to computer and large to aerospace vehicle, so that a door required by shielding engineering is also large in size, and a longitudinal feeding motion is required when the door is required to be translated due to the fact that wave-absorbing materials need to be adhered to the inner side of the door. In order to meet the requirements, a guide rail (3-3) suspended type translation shielding door is provided.

Because the threshold of the translational shield door needs to be level with the indoor and outdoor sides, the bottom edge shielding structure mode of the shield door determines that the lower edge of the door leaf needs to sink to the position below the terrace, a pit needs to be arranged in front of the threshold, a lifting platform is configured, and a large-sized object to be measured can conveniently enter and exit the shielding darkroom.

The lifting platforms configured in the prior art are all scissor-type hydraulic lifting platforms, the platform surface sinks to a certain extent when the platform is instantaneously loaded, and the cost for bearing a large-tonnage hydraulic lifting platform is very high.

Disclosure of Invention

The utility model aims to solve the technical problem that, overcome prior art not enough, provide a translation electromagnetic shield door with liftable load-bearing platform, it bears the weight greatly, goes up and down and translates reliably steadily.

In order to solve the technical problem, the technical scheme of the utility model is that:

the utility model provides a translation electromagnetic shield is liftable load-bearing platform for door, it includes the carriage subassembly, the mesa subassembly, elevating system, horizontal translation mechanism and direction setting element, the carriage subassembly is suitable for bearing the mesa subassembly of its top, the carriage subassembly comprises the groined type net that a plurality of supporting points formed, the supporting point on the carriage subassembly corresponds with the supporting point one-to-one on the mesa subassembly, elevating system is located the below of mesa subassembly and is used for going up and down to the mesa subassembly, horizontal translation mechanism links to each other with the bottom of mesa subassembly and is used for carrying out the translation to the mesa subassembly, the direction setting element is used for bearing the mesa subassembly to it after sinking.

Furthermore, a guiding positioning piece is arranged between the bearing frame component and the table board component.

Further, elevating system includes motor, lead screw lift, guide rail and connecting axle, links to each other through the connecting axle between two lead screw lifts, the one end of connecting axle and the pivot fixed connection of motor, and the lead screw top of lead screw lift is provided with the pulley, and the guide rail setting slides in the bottom of mesa subassembly and with the pulley cooperation.

Furthermore, the transverse translation mechanism comprises a speed reducing motor, an eccentric pulley and a pulley groove, the pulley groove is fixed on the table board assembly, the speed reducing motor is fixed on the bearing frame assembly, the eccentric pulley is fixed on a rotating shaft of the speed reducing motor, and the eccentric pulley can slide in the pulley groove.

By adopting the technical scheme, the utility model discloses following beneficial effect has:

1. four lead screw lifters promote in step, operate steadily.

2. The adoption of the groined grid supporting points has the advantages of safety, reliability, large bearing capacity and no sinking during loading.

3. And the cost is saved.

Drawings

Fig. 1 is a schematic structural view of the liftable bearing platform for the translational electromagnetic shielding door of the present invention;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a schematic view of the structure of the liftable platform for the translational electromagnetic shielding door of the present invention when it sinks;

fig. 4 is a side view of fig. 3.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

As shown in fig. 1 to 4, a lifting bearing platform for a translational electromagnetic shielding door comprises a bearing frame component 2, a table top component 1, a lifting mechanism 3, a transverse translation mechanism and a guide positioning piece 2-2, wherein the bearing frame component 2 is suitable for bearing the table top component 1 above the bearing frame component, the bearing frame component 2 is composed of a groined grid formed by a plurality of bearing points, the bearing points on the bearing frame component 2 correspond to the bearing points on the table top component 1 one by one, the lifting mechanism 3 is positioned below the table top component 1 and used for lifting the table top component 1, and the transverse translation mechanism is connected with the bottom of the table top component 1 and used for translating the table top component 1. The lifting mechanism 3 lifts the table top assembly 1 from the bearing frame assembly 2, then the transverse translation mechanism drives the table top assembly 1 to translate, and finally the lifting mechanism 3 lowers the table top assembly 1 onto the guide positioning piece 2-2.

As shown in fig. 1 to 4, a guiding positioning member 2-2 is arranged between the bearing frame assembly 2 and the table top assembly 1, the guiding positioning member 2-2 is a positioning pin, a limiting block is installed at the bottom of the table top assembly 1, the table top assembly 1 is lifted by a lifting mechanism 3 and then moved by a transverse translation mechanism, and the lifting mechanism 3 then lowers the table top assembly 1 onto the positioning pin, so that the bearing point is ensured not to move after reciprocating for many times.

As shown in figure 2, the lifting mechanism 3 comprises a motor 3-1, screw rod lifters 3-2, guide rails 3-3 and a connecting shaft 3-4, the two screw rod lifters 3-2 are connected through the connecting shaft 3-4, one end of the connecting shaft 3-4 is fixedly connected with a rotating shaft of the motor 3-1, pulleys 3-5 are arranged at the top of a screw rod of the screw rod lifter 3-2, and the guide rails 3-3 are arranged on a limiting block at the bottom of the table board assembly 1 and slide in a matched manner with the pulleys 3-5. The motor 3-1 drives the connecting shaft 3-4 to rotate, so that the screw rods in the two screw rod lifters 3-2 are driven to ascend or descend simultaneously, and the table board assembly 1 is lifted.

As shown in figure 1, the transverse translation mechanism comprises a speed reducing motor 4-1, an eccentric pulley 4-3 and a pulley groove 4-2, wherein the pulley groove 4-2 is fixed on the table board component 1, the speed reducing motor 4-1 is fixed on the bearing frame component 2, the eccentric pulley 4-3 is fixed on a rotating shaft of the speed reducing motor 4-1, and the eccentric pulley 4-3 can slide in the pulley groove 4-2. The gear motor 4-1 drives the eccentric pulley 4-3 to slide up and down in the pulley groove 4-2, and the pulley groove 4-2 drives the table board component 1 to translate because the gear motor 4-1 is fixed, and the table board component 1 slides through the guide rail 3-3 and the pulley 3-5 at the bottom.

The above embodiments further describe the technical problems, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. The utility model provides a translation electromagnetic shield is liftable load-bearing platform for door which characterized in that: it includes bearing frame subassembly (2), mesa subassembly (1), elevating system (3), horizontal translation mechanism and direction setting element (2-2), bearing frame subassembly (2) are suitable for bearing mesa subassembly (1) of its top, bearing frame subassembly (2) comprise the groined type net that a plurality of strong points formed, the strong point one-to-one on bearing frame subassembly (2) and the strong point on mesa subassembly (1), elevating system (3) are located the below of mesa subassembly (1) and are used for going up and down mesa subassembly (1), horizontal translation mechanism links to each other with the bottom of mesa subassembly (1) and is used for carrying out the translation to mesa subassembly (1), direction setting element (2-2) are used for bearing mesa subassembly (1) after sinking to it.

2. The liftable bearing platform for the translational electromagnetic shielding door according to claim 1, wherein: a guiding positioning piece (2-2) is arranged between the bearing frame component (2) and the table board component (1).

3. The liftable bearing platform for the translational electromagnetic shielding door according to claim 1, wherein: the lifting mechanism (3) comprises a motor (3-1), screw rod lifters (3-2), guide rails (3-3) and connecting shafts (3-4), the two screw rod lifters (3-2) are connected through the connecting shafts (3-4), one end of each connecting shaft (3-4) is fixedly connected with a rotating shaft of the motor (3-1), pulleys (3-5) are arranged at the tops of screw rods of the screw rod lifters (3-2), and the guide rails (3-3) are arranged at the bottom of the table board assembly (1) and slide in cooperation with the pulleys (3-5).

4. The liftable bearing platform for the translational electromagnetic shielding door according to claim 1, wherein: the transverse translation mechanism comprises a speed reducing motor (4-1), an eccentric pulley (4-3) and a pulley groove (4-2), the pulley groove (4-2) is fixed on the table board assembly (1), the speed reducing motor (4-1) is fixed on the bearing frame assembly (2), the eccentric pulley (4-3) is fixed on a rotating shaft of the speed reducing motor (4-1), and the eccentric pulley (4-3) can slide in the pulley groove (4-2).

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