CN113940498A

CN113940498A - Foldable electric lift table

Info

Publication number: CN113940498A
Application number: CN202111142878.5A
Authority: CN
Inventors: 项乐宏; 林涛; 封迪庆; 李方圆
Original assignee: Loctek Ergonomic Technology Co Ltd
Current assignee: Loctek Ergonomic Technology Co Ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-01-18
Anticipated expiration: 2041-09-28
Also published as: CN113940498B

Abstract

The invention discloses a folding electric lifting table, which comprises a table plate and two lifting upright posts positioned at two ends of the table plate, wherein two ends of the table plate are respectively provided with a motor for extending and folding the upright posts; the motor for extending and folding the upright post adopts a servo motor or a stepping motor; the input gear is meshed with a large gear of a transition gear which is coaxially connected, and a small gear of the transition gear is meshed with the output gear. The folding and unfolding operation of the folding electric lifting table is simple, convenient, time-saving, labor-saving and quick.

Description

Foldable electric lift table

Technical Field

The invention relates to the technical field of intelligent furniture, in particular to a folding type electric lifting table.

Background

Electric lifting tables occupy more and more important positions in work, study and life of people. In order to reduce the volume of the electric lifting table in the processes of transportation, storage and the like and save transportation, storage cost and the like, in recent years, a plurality of foldable electric lifting tables are provided, the electric lifting tables are folded during transportation and storage, two lifting upright posts are opened to be in a state that the two lifting upright posts form 90 degrees with the table top and the feet of the upright posts are on when the electric lifting tables are required to be used, and then the whole table is turned over to enable the feet of the two lifting upright posts to fall to the ground so as to be in a using state.

However, the foldable electric lifting table in the prior art still has the following disadvantages: 1. the lifting upright post needs to be manually pulled to be opened, installed or disassembled and folded, if the lifting upright post needs to unscrew a screw nut or release a lock catch and the like in the opening or folding process, the upright post is made to stand upright or lie down, and then the screw nut is screwed or unscrewed or the lock catch is locked or released, the opening, installing or disassembling and folding process is relatively troublesome, the time is long, the operation is relatively complicated, the time and the labor are wasted, the lifting upright post still falls into the traditional installation mode, and the user experience feeling is poor. 2. Because the customer is not professional, in the process of opening and installing, must be difficult to accurate counterpoint, also easily misplaces when the angle of 180 degrees of upset, can cause sometimes to go up and down the upright interference or restriction and influence the normal operating of electric lift table.

Disclosure of Invention

The invention aims to solve the technical problem of providing a folding type electric lifting table which is simple, convenient, time-saving, labor-saving and quick in opening and folding operations.

The technical scheme of the invention is that the folding type electric lifting table comprises a table plate and two lifting upright posts positioned at two ends of the table plate, wherein two ends of the table plate are respectively provided with an upright post stretching and folding motor, a motor shaft of each upright post stretching and folding motor is connected with an input gear of a gear transmission mechanism, an output gear of the gear transmission mechanism is connected with a rotating shaft which is in rotating fit with the table plate, and the upright post stretching and folding motors drive the rotating shaft to rotate through the gear transmission mechanism so as to drive the lifting upright posts fixedly connected with the rotating shaft to perform conversion between a horizontal state and a vertical state around the axis of the rotating shaft.

After adopting the structure, the folding electric lifting table has the following advantages: need open when needing to extend or need draw in when needing to fold in, only need start the stand and extend and fold and drive the pivot through gear drive mechanism with the motor and rotate can, the lift stand converts to the vertical state from the horizontal state, or converts the horizontal state into from the vertical state, opens promptly and folding operation all simple and convenient, save time, laborsaving and swift, does not need manual installation or dismantlement, opens or folding mode novel unique, gives the customer with good joyful experience sense. And open for electric drive, the stand is perpendicular targets in place and the installation is accomplished, and is counterpointed accurately, and when overturning 180 angles, gear drive has self-locking function, has avoided artifical installation and upset completely probably to the interference or the restriction that the lift stand caused, has guaranteed stability and reliability when electric lift table moves effectively.

Furthermore, a servo motor or a stepping motor is adopted as a motor for extending and folding the upright post; the input gear is meshed with a large gear of a transition gear which is coaxially connected, and a small gear of the transition gear is meshed with the output gear. After the structure is adopted, the gear transmission mechanism is simple and compact in structure and good in mechanical property, the stand column is converted into a vertical state from a horizontal state, or the time for converting the vertical state into the horizontal state is short, if the output gear only needs to rotate by 90 degrees in the whole conversion process, and the operation is stable and reliable.

Further, the diameter of the input gear is smaller than that of the small gear of the transition gear, the diameter of the small gear of the transition gear is smaller than that of the large gear of the transition gear, and the diameter of the large gear of the transition gear is smaller than that of the output gear. After the structure is adopted, the ratio between the gears is more reasonable, the meshing is smoother, and the operation is more stable and reliable.

Furthermore, each gear transmission mechanism is externally coated with a gear box consisting of a front cover and a rear cover, a first through hole for a motor shaft to extend out and a second through hole for supporting a rotating shaft are formed in the front cover of the motor for extending and folding close to the stand column, and the two covers are fixed by a plurality of screws in a threaded connection mode. After the structure is adopted, the exposed potential safety hazard of the gears is avoided, the installation and the maintenance are convenient, lubricating grease can be filled between the gears, the operation is smoother, more stable and more reliable, and the service life of the gear transmission mechanism can be prolonged.

Furthermore, the folding type electric lifting table further comprises two rotating shaft seats connected with the table plate, each rotating shaft seat is provided with a plurality of grooves with upward openings, the top end of each lifting upright post is provided with a flat plate fixedly connected with a plurality of plugboards, the plugboards are correspondingly inserted into the respective grooves one by one, the plugboards and a plurality of rotating shaft seat vertical plates forming the grooves are provided with coaxial third through holes, and each rotating shaft is in rotating fit with the third through holes; the inner angle of the rotating shaft seat is an arc angle which is matched with the flat plate to rotate around the axis of the rotating shaft, and the bottom surface of the rotating shaft seat is a plane which is used for the flat plate to be attached to the flat plate after being converted into a horizontal state. After the structure is adopted, the connection between the rotating shaft and the top end of the lifting stand column is firm and reliable, the structure of the rotating shaft in indirect rotating fit on the table plate is reliable and flexible to rotate, the mutual conversion process of the horizontal state and the vertical state of the lifting stand column is continuous, smooth, accurate, stable and reliable, the laminating property of the top end face of the lifting stand column is better, and the lifting stand column is more stable and reliable to the lifting operation of the table plate.

Furthermore, the foldable electric lifting table further comprises a table frame fixedly connected with the table plate and a mounting plate fixedly connected with the table frame, the outer end of the mounting plate is an Contraband-shaped plate with an upward opening, a motor for extending and folding the upright post is mounted at the outer end of the Contraband-shaped plate, a vertical plate at one side of the outer end of the Contraband-shaped plate close to the gear transmission mechanism is provided with a fourth through hole for a motor shaft to pass through and mounting an input gear, and the rotating shaft seat is arranged at the inner end of the Contraband-shaped plate. After the structure is adopted, the connection between the motor for extending and folding the stand column and the rotating shaft seat and the table plate is more reliable, the rotating matching between the rotating shaft and the table plate is more reliable and flexible, the installation structure of the motor is more reasonable, and the connection between the motor and the gear transmission mechanism is more compact and reliable.

Further, the foldable electric lifting table further comprises an inverted L-shaped frame, the bottom end of a vertical plate of the inverted L-shaped frame is fixedly connected with the table frame, the top end of the inverted L-shaped frame is a frame, and a top plate provided with a vent hole is fixedly connected to the frame; and a vertical plate at one side of the outer end of the Contraband-shaped plate far away from the gear transmission mechanism is provided with a fifth through hole for ventilating a motor for extending and folding the stand column. After the structure more than adopting, play vertical limiting displacement to the countershaft seat, stretch and fold with the motor to the stand and play fine guard action, make the stand again stretch and fold with the motor and have good ventilation environment.

Furthermore, according to the folding electric lifting table, the two vertical plates at the inner end of each Contraband-shaped plate are respectively provided with a sixth through hole, the front cover of a gear box, which is close to the Contraband-shaped plate, is provided with a second through hole, the front cover is in threaded connection and fixation with one vertical plate of the Contraband-shaped plate through a plurality of screws, and one end of a rotating shaft penetrates through the sixth through hole and is in rotating fit with the second through hole; a shaft sleeve disc is inserted and combined in a sixth through hole far away from the gear box, the shaft sleeve disc is screwed on the other vertical plate of the Contraband-shaped plate through a plurality of screws, and the other end of the rotating shaft is in running fit in a central hole of the shaft sleeve disc. After the structure is adopted, the rotating matching of the rotating shaft and the table plate is more stable and flexible, and the operation process of the conversion between the horizontal state and the vertical state of the lifting upright post is more stable, reliable and smoother.

Further, the foldable electric lifting table further comprises a table frame, wherein the table frame comprises two longitudinal beams and two cross beams; the bottom end of each lifting upright post is fixedly connected with the middle of the length of a rectangular footing plate, and the rectangular footing plate is parallel to the cross beam. After the structure above the adoption, the lift stand is opened and is stood steadily, firmly, the lift operation is reliable and stable when vertical state, and when the lift stand is folded and is horizontal state, rectangle footing board and table frame laminating are convenient for pack, transport and storage.

Furthermore, every rectangular footing board when the lift stand is the horizontality keeps away from the side of table and has a plurality of first bull's eyes universal ball, and the bottom surface of every rectangular footing board has a plurality of second bull's eyes universal ball, a plurality of first bull's eyes universal ball of the side of rectangular footing board and a plurality of second bull's eyes universal ball of the bottom surface of rectangular footing board all are used for the lift stand to expand and roll on ground with folding in-process. After the structure is adopted, when the table is unpacked before use, the table connected with the table frame can be positioned on the table, the first bull-eye universal balls on the side surfaces of the rectangular baseboard fall on the ground, the motors for stretching and folding the respective stand columns are started at the same time, the respective lifting stand columns are opened through the respective gear transmission mechanisms, the first bull-eye universal balls on the side surfaces of the rectangular baseboard roll on the ground firstly, along with increase of the extending angle of the stand columns, the second bull-eye universal balls on the bottom surface of each rectangular baseboard gradually fall on the ground and roll on the ground, the table top is upwards supported when the two lifting stand columns are opened until the two lifting stand columns are in a vertical use state, and at the moment, the second bull-eye universal balls on the bottom surface of each rectangular baseboard support the lifting stand columns and the whole table. When the folding is needed, the operation is reversed. The structure can save the process of firstly placing the desk board on the ground, opening the two lifting stand columns to be in a use state and then overturning the whole desk by 180 degrees, so that the opening and folding processes of the lifting stand columns are more labor-saving, time-saving, convenient and rapid.

Drawings

Fig. 1 is a schematic side-bottom view of the lifting column in the vertical state and the rectangular footing plate under the lifting column.

Fig. 2 is a schematic side plan view of the lifting column in the 45 ° state and with the rectangular footing plate on.

Fig. 3 is a schematic side plan view of the lifting column in a horizontal state, a support disc is arranged on a rectangular baseboard, and the table board is arranged below.

Fig. 4 is a schematic view of the partial explosion structure of fig. 3.

Fig. 5 is a schematic view of a partial explosion structure of the lifting column in a vertical state with a rectangular footing plate on.

Fig. 6 is an enlarged schematic view of the gear transmission mechanism in the present invention.

FIG. 7 is a schematic side-up view of the lifting column of the present invention in a horizontal state, with a bull's eye ball mounted on the rectangular footing plate and the table plate on the top.

Shown in the figure: 1. the table comprises a table plate, 2, a gear box, 3, a lifting upright post, 4, a rectangular baseboard, 5, a supporting disc, 6, a shaft sleeve disc, 7, a motor for extending and folding the upright post, 8, a mounting plate, 9, a table frame, 10, a flat plate, 11, an arc-shaped angle, 12, a groove, 13, a plane, 14, a rotating shaft seat, 15, a third through hole, 16, a top plate, 17, a fourth through hole, 18, a fifth through hole, 19, a sixth through hole, 20, a first bull's eye universal ball, 21, a rotating shaft, 22, a plug plate, 23, an output gear, 24, an inverted L-shaped frame, 25, a first through hole, 26, a second through hole, 27, an input gear, 28, a transition gear, 29, a big gear, 30, a pinion, 31, a transition gear shaft, 32, a second bull's eye universal ball, 33, a rotating shaft seat riser, 34, a gear transmission mechanism, 35, a front cover, 36, a rear cover, 37 and a vent hole.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It is to be noted that the description of the embodiments is provided to aid understanding of the present invention, and is not intended to limit the present invention. In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, 2, 3, 4, 5, 6 and 7.

The invention relates to a folding electric lifting table, which comprises a table plate 1 and a table frame 9, wherein the table frame 9 is fixedly connected with the bottom surface of the table plate 1 through screws in a screwed mode. The table frame 9 generally comprises two longitudinal beams and two cross beams arranged at two ends of the table plate 1. The invention relates to a folding electric lifting table, which also comprises two lifting upright posts 3 positioned at two ends of a table plate 1. Both the table frame 9 and the table top 1 are mature prior art. The lifting upright post 3 is also a mature prior art, and generally adopts a three-section or two-section lifting upright post driven by a ball screw pair linear lifting mechanism of an electric lifting office table, and a lifting motor of each upright post can be arranged at the inner lower end of the lifting upright post. The lifting principle of the lifting column 3 also belongs to the prior art, and is not described in detail herein.

The invention discloses a folding electric lifting table, which is characterized in that:

the two ends of the table plate 1 are respectively provided with an upright post stretching and folding motor 7, a motor shaft of each upright post stretching and folding motor 7 is connected with an input gear 27 of a gear transmission mechanism 34, an output gear 23 of the gear transmission mechanism 34 is connected with a rotating shaft 21 which is in running fit with the table plate 1, and the upright post stretching and folding motors 7 drive the rotating shaft 21 to rotate through the gear transmission mechanism 34 so as to drive the lifting upright posts 3 fixedly connected with the rotating shaft 21 to perform conversion between a horizontal state and a vertical state around the axis of the rotating shaft 21. The post-stretching and folding motor 7 is preferably a servo motor or a stepping motor. The input gear 27 is also known as a drive gear.

The gear train 34 includes an input gear 27, a transition gear 28, and an output gear 23. The transition gear 28 includes a large gear 29 and a small gear 30, and is coaxially connected via a transition gear shaft 31, it being understood that the transition gear shaft 31 is fixed to, e.g., integrally formed with, the large gear 29 and the small gear 30. The input gear 27 meshes with a large gear 29 of a coaxially connected transition gear 28, and a small gear 30 of the transition gear 28 meshes with the output gear 23.

The diameter of the input gear 27 is smaller than the diameter of the small gear 30 of the transition gear 28, the diameter of the small gear 30 of the transition gear 28 is smaller than the diameter of the large gear 29 of the transition gear 28, and the diameter of the large gear 29 of the transition gear 28 is smaller than the diameter of the output gear 23. The transition gear shaft 31 is rotatably fitted in a central hole of a bushing in the gear case 2, for example, on the inner wall of the gear case 2.

Each gear transmission mechanism 34 is externally covered with a gear box 2 composed of a front cover 35 and a rear cover 36 which are front and rear covers, the front cover 35 of the motor 7 for extending and folding near the upright post is provided with a first through hole 25 for extending the motor shaft and a second through hole 26 for supporting the rotating shaft 21, and the two covers, namely the front cover 35 and the rear cover 36, are fixed by a plurality of screws in a threaded manner.

The invention relates to a folding electric lifting table, which further comprises two rotating shaft seats 14 connected with a table plate 1, wherein each rotating shaft seat 14 is provided with a plurality of grooves 12 with upward openings, for example, the top end of each lifting upright post 3 is provided with a flat plate 10 fixedly connected with, for example, two inserting plates 22, the plurality of inserting plates 22 are inserted into the respective grooves 12 in a one-to-one correspondence manner, the plurality of inserting plates 22 and a plurality of rotating shaft seat vertical plates 33 forming the grooves 12, for example, three rotating shaft seat vertical plates 33 are provided with coaxial third through holes 15, and each rotating shaft 21 is in rotating fit with the plurality of third through holes 15. The third through holes 15 are three third through holes 15 on three rotating shaft vertical plates 33, two third through holes 15 are formed in the two inserting plates 22, and each rotating shaft 21 is in running fit with the fifth through holes 15. The inner angle of the rotating shaft seat 14 is an arc angle 11 which is matched with the flat plate 10 to rotate around the axis of the rotating shaft 21, and the bottom surface of the rotating shaft seat 14 is a plane 13 which is used for the flat plate 10 to be attached to the flat plate after being converted to be in a horizontal state.

The invention relates to a folding electric lifting table, which further comprises a table frame 9 fixedly connected with a table plate 1, such as fixed by screw connection through screws, and a mounting plate 8 fixedly connected with the table frame 9. The outer end of the mounting plate 8 is an Contraband-shaped plate with an upward opening, the motor 7 for extending and folding the upright post is mounted at the outer end of the Contraband-shaped plate by screws, the vertical plate at the side of the outer end of the Contraband-shaped plate close to the gear transmission mechanism 34 is provided with a fourth through hole 17 for a motor shaft to pass through and mount the input gear 27, and the rotating shaft seat 14 is arranged at the inner end of the Contraband-shaped plate. The vertical plate at the side of the outer end of the Contraband-shaped plate far away from the gear transmission mechanism 34 is provided with a fifth through hole 18 for ventilating the motor 7 for extending and folding the upright post.

The folding electric lifting table further comprises an inverted L-shaped frame 24, wherein the bottom end of a vertical plate of the inverted L-shaped frame 24 is fixedly connected with the table frame 9 through a screw, for example, the bottom end is fixed through the screw, the top end of the inverted L-shaped frame 24 is a frame, and the frame is fixedly connected with a top plate 16 provided with a vent hole 37 through the screw, for example, the top plate is fixed through the screw.

The two vertical plates at the inner end of each Contraband-shaped plate are provided with respective sixth through holes 19, and as mentioned above, the front cover 35 of the gear box 2 close to the Contraband-shaped plate is provided with the second through holes 26. The front cover 35 is screwed to a vertical plate of the Contraband-shaped plate via a plurality of screws, and one end of the rotating shaft 21 passes through the sixth through hole 19 and is rotatably fitted in the second through hole 26. A shaft sleeve disk 6 is inserted and combined in a sixth through hole 19 far away from the gear box 2, the shaft sleeve disk 6 is screwed on the other vertical plate of the Contraband-shaped plate through a plurality of screws, and the other end of the rotating shaft 21 is in running fit in a central hole of the shaft sleeve disk 6.

Foretell pivot 21 links firmly with lift stand 3, can adopt following concrete structure: the outer ends of a plurality of inserting plates 22 are provided with through holes respectively penetrating through the rotating shaft 21, the rotating shaft 21 and the through holes can be in interference fit and fixed by keys, the inner ends of the inserting plates 22 are welded with the flat plate 10, and the flat plate 10 is welded with a fixed pipe of the lifting upright column such as an inner pipe. The mounting plate 8 is fixedly connected with the table frame 9 and can adopt the following specific structure: the base plate of the Contraband-shaped plate at the outer end of the mounting plate 8 is fixedly connected with the cross beam of the table frame 9 by screws, for example, screwed or welded, and the base plate at the inner end of the mounting plate 8 is fixedly connected with the outer end of the longitudinal beam of the table frame 9 by screws, for example, screwed or welded. The connection between the rotating shaft seat 14 and the table board 1 can adopt the following specific structure: because the mounting plate 8 is already fixed with the table frame 9 as described above, and the table frame 9 is already fixed with the table plate 1, the bottom of the rotating shaft seat 14 can be welded or screwed with the inner end bottom plate of the Contraband-shaped plate of the mounting plate 8, of course, the rotating shaft 21 can also pass through the sixth through holes 19 on both sides to directly fix the rotating shaft seat 14 and the mounting plate 8, and indirectly fix the rotating shaft seat 14 and the table plate 1 through the table frame 9.

It is understood that the above mentioned screw fastening is generally realized by a threaded hole on the fixed plate, and the screw passes through the through hole on the plate to be connected and then is screwed in the threaded hole to fasten the plate.

The bottom end of each lifting upright post 3 of the folding electric lifting table is preferably fixedly connected with the middle of the length of a rectangular bottom foot plate 4, such as by adopting screw connection or welding, and the rectangular bottom foot plate 4 is parallel to a cross beam of a table frame 9. The bottom surfaces of two ends of each rectangular footing plate 4 can be respectively provided with a supporting disc 5. The rectangular footing plate 4, if subdivided, is of an elongated rectangular shape.

Or, referring to fig. 7, when the lifting column 3 is in a horizontal state, the side surface of each rectangular baseboard 4 far away from the table plate 1 is provided with a plurality of first bull-eye universal balls 20, the bottom surface of each rectangular baseboard 4 is provided with a plurality of second bull-eye universal balls 32, and the plurality of first bull-eye universal balls 20 on the side surface of the rectangular baseboard 4 and the plurality of second bull-eye universal balls 32 on the bottom surface of the rectangular baseboard 4 are all used for rolling on the ground in the unfolding and folding processes of the lifting column 3.

The coaxial connection described above is also referred to as a coaxial connection, i.e. the axis of the shaft is collinear with the axis of the associated bore, e.g. the bore of a gear. Rotationally engaged or rotationally connected. The bull's eye universal ball is also called a bull's eye wheel universal ball or a bull's eye universal ball rolling wheel or a universal ball rolling ball.

It will be understood that the above-mentioned motor 7 for extending and folding the upright post drives the lifting upright post 3 fixedly connected with the rotating shaft 21 to make the conversion between the horizontal state and the vertical state around the axis of the rotating shaft 21 through a gear transmission mechanism 34, and the structures at the two ends are completely the same and the positions are symmetrical.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a foldable electric lift table, includes table and two lift stands that are located the table both ends, its characterized in that: the two ends of the table plate are respectively provided with a stand column extending and folding motor, a motor shaft of each stand column extending and folding motor is connected with an input gear of a gear transmission mechanism, an output gear of the gear transmission mechanism is connected with a rotating shaft which is in running fit with the table plate, and the stand column extending and folding motors drive the rotating shaft to rotate through the gear transmission mechanism so as to drive the lifting stand columns fixedly connected with the rotating shaft to perform conversion between a horizontal state and a vertical state around the axis of the rotating shaft.

2. A folding power operated lift table as set forth in claim 1 wherein: the motor for extending and folding the upright post adopts a servo motor or a stepping motor; the input gear is meshed with a large gear of a transition gear which is coaxially connected, and a small gear of the transition gear is meshed with the output gear.

3. A folding power operated lift table as set forth in claim 2 wherein: the diameter of the input gear is smaller than that of the small gear of the transition gear, the diameter of the small gear of the transition gear is smaller than that of the large gear of the transition gear, and the diameter of the large gear of the transition gear is smaller than that of the output gear.

4. A folding power operated lift table according to any of claims 1 to 3 wherein: each gear transmission mechanism is externally coated with a gear box consisting of a front cover and a rear cover, a first through hole for a motor shaft to extend out and a second through hole for supporting a rotating shaft are arranged on the front cover of the motor for extending and folding close to the stand column, and the two covers are fixed by a plurality of screws in a screwed connection mode.

5. A folding power operated lift table as set forth in claim 1 wherein: the lifting vertical column is provided with a plurality of lifting vertical columns, each lifting vertical column is provided with a groove, each lifting vertical column is provided with a flat plate fixedly connected with a plurality of plugboards, the plugboards are inserted into the grooves in a one-to-one correspondence mode, the plugboards and a plurality of lifting vertical plates of the lifting vertical columns, which form the grooves, are provided with coaxial third through holes, and each rotating shaft is in rotating fit with the third through holes; the inner angle of the rotating shaft seat is an arc angle which is matched with the flat plate to rotate around the axis of the rotating shaft, and the bottom surface of the rotating shaft seat is a plane which is used for the flat plate to be attached to the flat plate after being converted into a horizontal state.

6. A folding power operated lift table as set forth in claim 5 wherein: the table frame is fixedly connected with the table plate, the mounting plate is fixedly connected with the table frame, the outer end of the mounting plate is an Contraband-shaped plate with an upward opening, the motor for extending and folding the upright column is mounted at the outer end of the Contraband-shaped plate, a vertical plate at one side of the outer end of the Contraband-shaped plate close to the gear transmission mechanism is provided with a fourth through hole for the motor shaft to pass through and mounting the input gear, and the rotating shaft seat is arranged at the inner end of the Contraband-shaped plate.

7. A folding power operated lift table as set forth in claim 6 wherein: the table is characterized by also comprising an inverted L-shaped frame, wherein the bottom end of a vertical plate of the inverted L-shaped frame is fixedly connected with the table frame, the top end of the inverted L-shaped frame is a frame, and a top plate provided with a vent hole is fixedly connected on the frame; and a vertical plate at one side of the outer end of the Contraband-shaped plate far away from the gear transmission mechanism is provided with a fifth through hole for ventilating a motor for extending and folding the stand column.

8. A folding power operated lift table as set forth in claim 6 wherein: the two vertical plates at the inner end of each Contraband-shaped plate are respectively provided with a sixth through hole, the front cover of a gear box, which is close to the Contraband-shaped plate, is provided with a second through hole, the front cover is in threaded connection and fixation with one vertical plate of the Contraband-shaped plate through a plurality of screws, and one end of a rotating shaft penetrates through the sixth through hole and is in rotating fit with the second through hole; a shaft sleeve disc is inserted and combined in a sixth through hole far away from the gear box, the shaft sleeve disc is screwed on the other vertical plate of the Contraband-shaped plate through a plurality of screws, and the other end of the rotating shaft is in running fit in a central hole of the shaft sleeve disc.

9. A folding power operated lift table as set forth in claim 1 wherein: the table frame comprises two longitudinal beams and two cross beams; the bottom end of each lifting upright post is fixedly connected with the middle of the length of a rectangular footing plate, and the rectangular footing plate is parallel to the cross beam.

10. A folding power operated lift table as set forth in claim 9 wherein: every rectangular footing board when lift stand is the horizontality keeps away from the side of table and has a plurality of first bull's eyes universal ball, and the bottom surface of every rectangular footing board has a plurality of second bull's eyes universal ball, a plurality of first bull's eyes universal ball of the side of rectangular footing board and a plurality of second bull's eyes universal ball of the bottom surface of rectangular footing board all are used for lift stand to expand and roll on ground with folding in-process.