CN211242210U

CN211242210U - Can conceal dual-purpose table of over-and-under type sand table model meeting

Info

Publication number: CN211242210U
Application number: CN201921569053.XU
Authority: CN
Inventors: 张建中
Original assignee: Beijing Sunshine Vision Technology Co ltd
Current assignee: Beijing Sunshine Vision Technology Co ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-08-14
Anticipated expiration: 2029-09-20

Abstract

The utility model discloses a concealed lifting type sand table model conference dual-purpose table, which relates to the technical field of sand table models and comprises a cabinet body, a table plate, a rolling curtain mechanism, an electric hydraulic push rod and a model table plate, wherein the center of the table plate is provided with a rectangular through hole, the lower surface of the table plate is fixedly connected with the upper end of the cabinet body, and the rectangle through-hole is located the central point of cabinet body upper end, and the table is located the lower surface mounting of the internal portion of cabinet and rolls up curtain mechanism, and the relative rectangle through-hole of model table sets up in the lower part of rectangle through-hole, and electronic hydraulic push rod is equipped with four, the lower surface four corners of model table respectively with four electronic hydraulic push rod's top fixed connection, four electronic hydraulic push rod's bottom all with the bottom surface fixed connection of the internal portion of cabinet, the utility model discloses effectively combine the effect of sand table model and conference table, not only increase work efficiency, also avoid the space extravagant simultaneously, reduce use cost.

Description

Can conceal dual-purpose table of over-and-under type sand table model meeting

Technical Field

The utility model relates to a sand table model technical field specifically is a can conceal dual-purpose table of over-and-under type sand table model meeting.

Background

The sand table model is divided into a terrain sand table, a building sand table, a military sand table and a sand table for teaching and training, the size of the general sand table is large, an independent room needs to be set for placing the sand table, and when teaching guidance and training are carried out, the room in a meeting room and a room for placing the sand table model need to move back and forth, so that time is wasted, and meanwhile, the cost is wasted by setting up the room for placing the sand table model independently.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a dual-purpose table for a concealed lifting type sand table model conference.

The utility model aims at realizing through the following technical scheme: a dual-purpose table capable of being used for displaying sand table models and meeting conference tables comprises a cabinet body 1, a table plate 2, a rolling curtain mechanism 3, an electric hydraulic push rod 4 and a model table plate 5, wherein the cabinet body 1 is hollow and is provided with an opening at the upper part, supporting legs 101 are arranged at four corners of the lower surface of the cabinet body 1, a rectangular through hole 201 is arranged at the center of the table plate 2, the lower surface of the table plate 2 is fixedly connected with the upper end of the cabinet body 1, the rectangular through hole 201 is positioned at the central part of the upper end of the cabinet body 1, the outer side wall of the table plate 2 protrudes out of the outer side wall of the cabinet body 1, the rolling curtain mechanism 3 is arranged at the lower surface of the table plate 2 positioned in the cabinet body 1, the model table plate 5 is opposite to the rectangular through hole 201 and is arranged at the lower part of the rectangular through hole 201, and the cross sectional area of the model table plate, electric hydraulic pressure push rod 4 is equipped with four, the lower surface four corners of model table 5 respectively with four electric hydraulic pressure push rod 4's top fixed connection, four electric hydraulic pressure push rod 4's bottom all with the bottom surface fixed connection of the internal portion of cabinet 1, one side of the external portion of the cabinet is equipped with power supply socket 6, upper surface one side of table 2 is equipped with rolls up curtain opening switch 7, rolls up curtain closing switch 8, model rising switch 9, model decline switch 10, power supply socket 6 passes through respectively roll up curtain opening switch 7, roll up curtain closing switch 8 with roll up curtain mechanism 3 and connect, power supply socket 6 passes through respectively model rising switch 9, model decline switch 10 and four electric hydraulic pressure push rod 4 connects.

In a preferred embodiment, the roller blind mechanism 3 comprises a driving rotating shaft 301, a driven rotating shaft 302, a motor 303, a coupling 304, a roller blind 306, a conveyor belt 307 and a clamping rod 310, wherein both ends of the driving rotating shaft 301 are sleeved with first bearing seats 308, the driving rotating shaft 301 is arranged on one side of the lower surface of the table board 2 inside the cabinet 1 through the two first bearing seats 308, both ends of the driven rotating shaft 302 are sleeved with second bearing seats 309, and the driven rotating shaft 302 is arranged on the opposite side of the table board 2 on the side where the driving rotating shaft 301 is installed through the two second bearing seats 309; two conveying belts 307 are arranged, and the driving rotating shaft 301 and the driven rotating shaft 302 are connected through the two conveying belts 307 and drive the driven rotating shaft 302 to rotate; one end of the active rotating shaft 301 is connected with the fixed end of the motor 303 through the coupling 304, and the motor 303 is fixedly connected with the lower surface of the table plate 2; one end of the rolling screen 306 is fixedly connected with the driven rotating shaft 302, the other end of the rolling screen 306 is fixedly connected with the clamping rod 310, the clamping rod 310 is in a flat bar shape, and the two ends of the clamping rod 310 are both provided with a U-shaped clamping groove 311, the top surfaces of the two conveyor belts 307 are both provided with clamping heads 312, the chuck 312 comprises a chuck part 313 and a screw 314, wherein the upper end of the chuck part 313 is provided with a disk 315, the lower end is a cylinder 316 with a diameter smaller than that of the disk 315 at the upper end, and the center of the lower end of the cylinder 316 is provided with a threaded hole corresponding to the screw 314, the conveyor belt 307 is provided with a small hole 305 corresponding to the screw 314, the screw 314 passes through the small hole 305 to be in threaded connection with the clamping head part 313, the U-shaped engaging grooves 311 at both ends of the engaging rod 310 are engaged with the circumference of the cylinder 316 of the engaging head 312, and reciprocate along with the belt 307.

In a preferred embodiment, a first limit switch 11 is disposed on a lower surface of the table 2 inside the cabinet 1, and the first limit switch 11 is located above a connection portion of the driving rotating shaft 301 and one of the two conveyor belts 307, and is close to a direction of the driven rotating shaft 302; the table 2 is located the lower surface of the cabinet body 1 is provided with a second limit switch 12, and the second limit switch 12 is located the driven spindle 302 and two above the connecting position of any one of the conveyor belts 307, and is close to the direction of the driving spindle 301.

In a preferred embodiment, the motor 303 is electrically connected to the power supply socket 6 sequentially through the first limit switch 11 and the rolling shutter closing switch 8, and the motor 303 is electrically connected to the power supply socket 6 sequentially through the second limit switch 12 and the rolling shutter opening switch 7.

In a preferred embodiment, a rectangular groove 501 for arranging a sand table model is formed in the upper portion of the model table 5, a top 502 is formed in one side of the outer side wall of the model table 5, and a third limit switch 13 is arranged on the lower surface of the table 2, which is located inside the cabinet 1, and corresponds to the top 502; a bracket 102 is arranged at the position, corresponding to the top 502, of the bottom surface inside the cabinet body 1, and a fourth limit switch 14 is arranged at the top of the bracket 102; the four electric hydraulic push rods 4 are electrically connected with the power supply socket 6 sequentially through the third limit switch 13 and the model ascending switch 9, and the four electric hydraulic push rods 4 are electrically connected with the power supply socket 6 sequentially through the fourth limit switch 14 and the model descending switch 10.

In a preferred embodiment, the first limit switch 11, the second limit switch 12, the third limit switch 13 and the fourth limit switch 14 are normally closed limit switches.

The utility model has the advantages that:

the utility model discloses effectively combine the effect of sand table model and conference table, can be used as conference table exclusive use, do through the operation the utility model discloses, to roll up the curtain mechanism and open, the sand table model rises to the desktop, when carrying out the meeting, can explain the instruction according to the sand table model in real time, the planning scheme not only increases work efficiency, avoids the time waste, also avoids the space extravagant simultaneously, reduces use cost.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a top view (half-opened state of the roller shutter) of a convertible table for sand table model conference, which is capable of being hidden and lifted according to an embodiment of the present invention;

FIG. 2 is a sectional view of a dual-purpose table for a hidden liftable sand table model conference according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a roller shutter mechanism of a dual-purpose table for a hidden lifting type sand table model conference according to an embodiment of the present invention;

fig. 4 is a schematic view of a chuck structure of a dual-purpose table for a hidden lifting sand table model conference according to an embodiment of the present invention;

fig. 5 is a schematic view of a clamping rod structure of a dual-purpose table for a concealed lifting type sand table model conference.

In the figure:

1. a cabinet body; 101. supporting legs; 102. a support; 2. a table plate; 201. a rectangular through hole; 3. a roller shutter mechanism; 301. a driving rotating shaft; 302. a driven rotating shaft; 303. a motor; 304. a coupling; 305. a small hole; 306. Rolling a curtain; 307. a conveyor belt; 308. a first bearing housing; 309. a second bearing housing; 310. a clamping rod; 311. A U-shaped clamping groove; 312. clamping a head; 313. a card head portion; 314. a screw; 315. a disc; 316. a cylinder; 4. an electric hydraulic push rod; 5. a model table plate; 501. a rectangular groove; 502. ejecting the head; 6. a power supply socket; 7. a shutter opening switch; 8. a roller shutter closing switch; 9. a model raising switch; 10. a model down switch; 11. a first limit switch; 12. a second limit switch; 13. a third limit switch; 14. and a fourth limit switch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The invention will be further described with reference to the drawings and specific examples.

As shown in fig. 1-5, the dual-purpose table for sand table model conference capable of being hidden and lifted provided by the embodiment of the present invention can be used for displaying sand table models and serving as a conference table, and comprises a cabinet body 1, a table plate 2, a rolling curtain mechanism 3, an electric hydraulic push rod 4 and a model table plate 5, wherein the cabinet body 1 is hollow and has an open upper portion, four corners of the lower surface of the cabinet body 1 are respectively provided with a supporting leg 101, the center of the table plate 2 is provided with a rectangular through hole 201, the lower surface of the table plate 2 is fixedly connected with the upper end of the cabinet body 1, the rectangular through hole 201 is located at the central position of the upper end of the cabinet body 1, the outer side wall of the table plate 2 protrudes out of the outer side wall of the cabinet body 1, the rolling curtain mechanism 3 is mounted on the lower surface of the cabinet body 1 inside of the table plate 2, the model table plate 5, the cross-sectional area of the model table 5 is equal to that of the rectangular through hole 201, four electric hydraulic push rods 4 are provided, four corners of the lower surface of the model table 5 are respectively fixedly connected with the top ends of the four electric hydraulic push rods 4, the bottom ends of the four electric hydraulic push rods 4 are respectively fixedly connected with the bottom surface inside the cabinet body 1, one side of the outside of the cabinet body 1 is provided with a power supply socket 6, one side of the upper surface of the table 2 is provided with a roller shutter opening switch 7, a roller shutter closing switch 8, a model ascending switch 9 and a model descending switch 10, the power supply socket 6 is respectively connected with the roller shutter mechanism 3 through the roller shutter opening switch 7 and the roller shutter closing switch 8, the power supply socket 6 is respectively connected with the four electric hydraulic push rods 4 through the model ascending switch 9 and the model descending switch 10, when the model ascending switch 9 or the model descending switch 10 is opened, four electro-hydraulic push rod 4 moves simultaneously, and electro-hydraulic push rod 4 is prior art, can confirm the flexible length of electro-hydraulic push rod 4 according to the size of the conference table that actual need used to select suitable model.

In a specific embodiment, the rolling shutter mechanism 3 includes a driving rotating shaft 301, a driven rotating shaft 302, a motor 303, a coupling 304, a rolling shutter 306, a conveyor belt 307, and a clamping rod 310, wherein both ends of the driving rotating shaft 301 are sleeved with first bearing seats 308, the driving rotating shaft 301 is disposed on one side of the lower surface of the table 2 inside the cabinet 1 through the two first bearing seats 308, both ends of the driven rotating shaft 302 are sleeved with second bearing seats 309, and the driven rotating shaft 302 is disposed on the opposite side of the table 2 on the side where the driving rotating shaft 301 is mounted through the two second bearing seats 309; two conveying belts 307 are arranged, and the driving rotating shaft 301 and the driven rotating shaft 302 are connected through the two conveying belts 307 and drive the driven rotating shaft 302 to rotate; one end of the active rotating shaft 301 is connected with the fixed end of the motor 303 through the coupling 304, and the motor 303 is fixedly connected with the lower surface of the table plate 2; one end of the rolling screen 306 is fixedly connected with the driven rotating shaft 302, the other end of the rolling screen 306 is fixedly connected with the clamping rod 310, the clamping rod 310 is in a flat bar shape, and the two ends of the clamping rod 310 are both provided with a U-shaped clamping groove 311, the top surfaces of the two conveyor belts 307 are both provided with clamping heads 312, the chuck 312 comprises a chuck part 313 and a screw 314, wherein the upper end of the chuck part 313 is provided with a disk 315, the lower end is a cylinder 316 with a diameter smaller than that of the disk 315 at the upper end, and the center of the lower end of the cylinder 316 is provided with a threaded hole corresponding to the screw 314, the conveyor belt 307 is provided with a small hole 305 corresponding to the screw 314, the screw 314 passes through the small hole 305 to be in threaded connection with the clamping head part 313, the U-shaped engaging grooves 311 at both ends of the engaging rod 310 are engaged with the circumference of the cylinder 316 of the engaging head 312, and reciprocate along with the belt 307.

In a specific embodiment, a first limit switch 11 is disposed on a lower surface of the table 2 inside the cabinet 1, and the first limit switch 11 is located above a connection portion of the driving rotating shaft 301 and one of the two conveyor belts 307, and is close to a direction of the driven rotating shaft 302; the table 2 is located the lower surface of the cabinet body 1 is provided with a second limit switch 12, and the second limit switch 12 is located the driven spindle 302 and two above the connecting position of any one of the conveyor belts 307, and is close to the direction of the driving spindle 301.

In a specific embodiment, the motor 303 is electrically connected to the power supply socket 6 sequentially through the first limit switch 11 and the rolling shutter closing switch 8, and the motor 303 is electrically connected to the power supply socket 6 sequentially through the second limit switch 12 and the rolling shutter opening switch 7.

In a specific embodiment, a rectangular groove 501 for arranging a sand table model is formed in the upper portion of the model table plate 5, a top 502 is arranged on one side of the outer side wall of the model table plate 5, and a third limit switch 13 is arranged on the lower surface, located inside the cabinet body 1, of the table plate 2, corresponding to the top 502; a bracket 102 is arranged at the position, corresponding to the top 502, of the bottom surface inside the cabinet body 1, and a fourth limit switch 14 is arranged at the top of the bracket 102; the four electric hydraulic push rods 4 are electrically connected with the power supply socket 6 sequentially through the third limit switch 13 and the model ascending switch 9, and the four electric hydraulic push rods 4 are electrically connected with the power supply socket 6 sequentially through the fourth limit switch 14 and the model descending switch 10.

In a specific embodiment, the first limit switch 11, the second limit switch 12, the third limit switch 13, and the fourth limit switch 14 are normally closed limit switches.

The working principle is as follows:

the utility model discloses when needs are used for the sand table model, with the external commercial power of power supply socket 6, because of second limit switch 12 is in normally closed state, so when pressing down roll screen and opening switch 7, the circuit switch-on, motor 303 clockwise rotation (from motor free end to motor fixed end direction) this moment, thereby drive conveyer belt 307 and driven spindle 302 rotatory, because of the kelly 310 card on the dop 312 of conveyer belt 307 top surface, so roll screen 306 follows conveyer belt 307 motion, simultaneously, driven spindle 302 is rotatory to be rolled up roll screen 306 to driven spindle 302, when kelly 310 moves to driven spindle 302 one end, contact with second limit switch 12, second limit switch 12 breaks off, the circuit cuts off, motor 303 stop operation, roll screen 306 is packed up this moment, expose the sand table model of lower part;

then, the model lifting switch 9 is pressed, the circuit is switched on because the third limit switch 13 is in a normally closed state, the four electric hydraulic push rods 4 operate simultaneously, the model table plate 5 is lifted, when the model table plate is lifted to the table plate 2, the top 502 of the model table plate 5 is in contact with the third limit switch 13, the third limit switch 13 is switched off, the circuit is cut off, the electric hydraulic push rods 4 stop operating, and meanwhile, the model table plate 5 is kept at the position of the parallel and level with the table plate 2 because of the pressure in the electric hydraulic push rods 4, at the moment, the utility model can be used for sand table model display, so as to perform training education, scheme making and other works, and simultaneously can be used as a conference table, and when a conference is started, the guidance can be performed in real time according to the sand table model, and tasks are made, distributed and;

the utility model discloses when not needing to show the sand table model, can receive the sand table model in cabinet body 1, be used as the conference table specially, at first with power supply socket 6 external commercial power, because of fourth limit switch 14 is in the normal close state, so when pressing model decline switch 10, the circuit is put through, four electric hydraulic push rods 4 move, model table 5 descends, when top 502 and fourth limit switch 14 contact, fourth limit switch 14 breaks off, the circuit cuts off, electric hydraulic push rod 4 stops the operation;

subsequently, press roll up curtain closing switch 8, because of first limit switch 11 is in the normally closed state, so the circuit is in the on-state, motor 303 anticlockwise rotation, thereby it is rotatory to drive conveyer belt 307 and driven spindle 302, because of the kelly 310 of roll up curtain 306 one end follows the conveyer belt 307 motion, driven spindle 302 anticlockwise rotation simultaneously, so roll up curtain 306 and expand from driven spindle 302, when kelly 310 moves to initiative pivot 301 one end, contact with first limit switch 11, first limit switch 11 disconnection, the circuit cuts off, motor 303 stall, roll up the curtain and expand the sand table model that will be in the lower part this moment and shelter from, can be used as the conference table, the utility model discloses combine conference table and sand table model, when doing benefit to work, practice thrift the space again, and then practice thrift the cost.

Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a can conceal dual-purpose table of over-and-under type sand table model meeting, can be used to show the sand table model and as conference table, its characterized in that: comprises a cabinet body (1), a table plate (2), a roller shutter mechanism (3), an electric hydraulic push rod (4) and a model table plate (5), wherein the cabinet body (1) is hollow and is provided with an upper opening, supporting legs (101) are arranged at four corners of the lower surface of the cabinet body (1), a rectangular through hole (201) is arranged at the center of the table plate (2), the lower surface of the table plate (2) is fixedly connected with the upper end of the cabinet body (1), the rectangular through hole (201) is arranged at the central part of the upper end of the cabinet body (1), the outer side wall of the table plate (2) protrudes out of the outer side wall of the cabinet body (1), the roller shutter mechanism (3) is arranged on the lower surface of the inner part of the cabinet body (1) of the table plate (2), the model table plate (5) is opposite to the rectangular through hole (201) arranged at the lower part of the rectangular through hole (201), and the cross sectional area of the model table plate (5) is, four electric hydraulic push rods (4) are arranged, four corners of the lower surface of the model table plate (5) are respectively fixedly connected with the top ends of the four electric hydraulic push rods (4), the bottom ends of the four electric hydraulic push rods (4) are respectively fixedly connected with the bottom surface inside the cabinet body (1), a power supply socket (6) is arranged on one side of the outer part of the cabinet body (1), a roller shutter opening switch (7), a roller shutter closing switch (8), a model ascending switch (9) and a model descending switch (10) are arranged on one side of the upper surface of the table plate (2), the power supply socket (6) is respectively connected with the roller shutter mechanism (3) through the roller shutter opening switch (7) and the roller shutter closing switch (8), the power supply socket (6) is connected with the four electric hydraulic push rods (4) through the model ascending switch (9) and the model descending switch (10) respectively.

2. The concealable lifting type sand table model conference dual-purpose table of claim 1, wherein: the roller shutter mechanism (3) comprises a driving rotating shaft (301), a driven rotating shaft (302), a motor (303), a coupling (304), a roller shutter (306), a conveying belt (307) and a clamping rod (310), wherein first bearing seats (308) are respectively sleeved at two ends of the driving rotating shaft (301), the driving rotating shaft (301) is arranged on one side, located on the lower surface of the cabinet body (1), of the table (2) through the two first bearing seats (308), second bearing seats (309) are respectively sleeved at two ends of the driven rotating shaft (302), and the driven rotating shaft (302) is arranged on the opposite side, located on one side, where the driving rotating shaft (301) is installed, of the table (2) through the two second bearing seats (309); two conveying belts (307) are arranged, and the driving rotating shaft (301) is connected with the driven rotating shaft (302) through the two conveying belts (307) and drives the driven rotating shaft (302) to rotate; one end of the active rotating shaft (301) is connected with the fixed end of the motor (303) through the coupling (304), and the motor (303) is fixedly connected to the lower surface of the table plate (2); one end of the roller shutter (306) is fixedly connected with the driven rotating shaft (302), the other end of the roller shutter (306) is fixedly connected with the clamping rod (310), the clamping rod (310) is flat bar-shaped, two ends of the clamping rod (310) are respectively provided with a U-shaped clamping groove (311), two clamping heads (312) are respectively arranged on the top surfaces of the conveyor belts (307), each clamping head (312) comprises a clamping head portion (313) and a screw (314), a disc (315) is arranged at the upper end of each clamping head portion (313), the lower end of each clamping head portion is a cylinder (316) of which the diameter is smaller than that of the disc (315), a threaded hole corresponding to the screw (314) is formed in the center of the lower end of each cylinder (316), the conveyor belts (307) correspond to the screws (314) and are provided with small holes (305), and the screws (314) penetrate through the small holes (305) and are in threaded connection, u-shaped clamping grooves (311) at two ends of the clamping rod (310) are respectively clamped on the circumference of the cylinder (316) of the clamping head (312) and move back and forth along with the conveying belt (307).

3. The concealable lifting type sand table model conference dual-purpose table of claim 2, wherein: a first limit switch (11) is arranged on the lower surface of the table plate (2) positioned in the cabinet body (1), and the first limit switch (11) is positioned above the connecting part of the driving rotating shaft (301) and any one of the two conveyor belts (307) and is close to the direction of the driven rotating shaft (302); the table (2) is located the lower surface of the cabinet body (1) inside is equipped with second limit switch (12), just second limit switch (12) are located driven spindle (302) and two the top of any conveyer belt joint part in conveyer belt (307), and are close to the direction of initiative pivot (301) place.

4. The concealable lifting type sand table model conference dual-purpose table of claim 3, wherein: the motor (303) loops through the first limit switch (11), the roller shutter closing switch (8) and the power supply socket (6) electrically connected, and the motor (303) loops through the second limit switch (12), the roller shutter opening switch (7) and the power supply socket (6) electrically connected.

5. The concealable lifting type sand table model conference dual-purpose table of claim 4, wherein: a rectangular groove (501) for arranging a sand table model is formed in the upper portion of the model table plate (5), a top (502) is arranged on one side of the outer side wall of the model table plate (5), and a third limit switch (13) is arranged on the lower surface, located inside the cabinet body (1), of the table plate (2) and corresponding to the top (502); a bracket (102) is arranged at the position, corresponding to the ejector head (502), of the bottom surface in the cabinet body (1), and a fourth limit switch (14) is arranged at the top of the bracket (102); the four electric hydraulic push rods (4) are electrically connected with the power supply socket (6) sequentially through the third limit switch (13) and the model ascending switch (9), and the four electric hydraulic push rods (4) are electrically connected with the power supply socket (6) sequentially through the fourth limit switch (14) and the model descending switch (10).

6. The concealable lifting type sand table model conference dual-purpose table of claim 5, wherein: the first limit switch (11), the second limit switch (12), the third limit switch (13) and the fourth limit switch (14) are normally closed limit switches.