CN219288985U - Lifting electric heating table convenient to move - Google Patents

Abstract

The utility model relates to a lifting electric heating table convenient to move, which comprises a table plate, a lifting column assembly, a supporting column, a bottom box lifting sliding frame and a roller device arranged on the lifting sliding frame, wherein the upper end of the lifting column assembly is fixedly connected with the table plate, the lifting column assembly is arranged in the hollow supporting column in a sliding way up and down, the bottom box is fixedly connected to the lower part of the supporting column, a lifting internal threaded hole is formed in the lifting column assembly, a lifting screw rod is vertically arranged in the supporting column and is in threaded connection with the lifting internal threaded hole, a table plate synchronous lifting system is arranged in the bottom box, and the table plate synchronous lifting system drives the lifting screw rod to rotate. Therefore, the utility model has simple structure, low production cost and very convenient use.

Description

Lifting electric heating table convenient to move

Technical Field

The utility model relates to the technical field of electric heating tables, in particular to a lifting electric heating table convenient to move.

Background

The electric heating table is a combination of electric heating and table, also called electric heating table, and is a novel heating appliance integrating the table and the warmer. The existing common electric heating table with lifting function is generally that a table plate can be lifted or that the table plate and a middle layer frame can be lifted, but the electric heating table is inconvenient to move, carry and clean the ground under a table body; in order to solve the problem that the electric heating table is inconvenient to move, the electric heating table with casters arranged at the bottom is also available, but the electric heating table cannot be well fixed when in use, so that the electric heating table is inconvenient for users to use; in order to realize that the lifting electric heating table can move when being moved and is fixed when in use, the lifting electric heating table also adopts two or more sets of driving mechanisms to respectively drive the tabletop plate to lift and the casters to lift, but the electric heating table has a complex structure, complex production and installation process and high product cost.

Disclosure of Invention

The utility model aims to provide a lifting electric heating table convenient to move.

The purpose of the utility model is realized in the following way:

the utility model provides a convenient lift electric heating table that removes, includes table, lift post, support column, base case lift carriage and roller device, lift post subassembly's upper end and table fixed connection, lift post subassembly slides from top to bottom and sets up in hollow support column, base case fixed connection is in the lower part of support column, be equipped with the lift internal thread hole on the lift post subassembly, vertical being provided with the lift screw in the support column, lift screw and lift internal thread hole threaded connection, be equipped with the synchronous operating system of table in the base case, the synchronous operating system of table drives the lift screw and rotates, characterized by still includes lift carriage and locates the roller device on the lift carriage, lift carriage slides from top to bottom and sets up in the below of lift post subassembly, the lower part of support column or the bottom of base case that slides from top to bottom, and when lift post subassembly is pressing the lift carriage to descend together, lift carriage drives roller device to stretch out the lower part of support column or the bottom of base case downwards, roller device stands on ground, and the lower part of support column and the base case is stretched by the lift carriage to the lift electric heater, and the whole floor very by lifting electric heating device, the whole electric heating device, the lifting table very can be moved by the lifting and the whole user. When the lifting column assembly and the table board rise and the lifting column assembly does not press the lifting sliding frame, the lifting sliding frame and the roller device retract upwards into the supporting column or the bottom box, the whole lifting electric heating table descends, the lower end of the supporting column and the bottom box stand on the ground, the roller device is pressed into the outer supporting column or the bottom box by the ground, and the lifting sliding frame and the roller device ascend together. Therefore, the utility model adopts the synchronous lifting system of the table plate, the lifting screw rod and the lifting column to drive the table plate to lift and the roller device to descend, and the roller device can lift or descend the whole lifting electric heating table, thereby being convenient for a user to adjust the height of the table plate and push the lifting electric heating table to move according to the needs. Therefore, the utility model has simple structure, low production cost and very convenient use.

The present utility model can be further improved as follows.

The lifting column assembly comprises a lifting column, a connecting pipe and a lifting nut, wherein the connecting pipe is arranged in the lifting column, the connecting pipe is fixedly connected with the lifting column, the lifting nut is arranged on the connecting pipe, the lifting nut is provided with a lifting internal thread hole, and the upper end of the lifting screw rod extends into the connecting pipe upwards.

The lifting column assembly comprises a lifting column and a lifting nut, wherein the lifting nut is provided with the lifting internal threaded hole, the lifting nut is arranged in the lifting column or at the lower end of the lifting column, if the lifting nut is arranged at the lower end of the lifting column, the lifting nut is used for pressing the lifting sliding frame to descend, of course, the lifting nut can also be arranged in the lifting column, and the horizontal height of the lifting nut is higher than that of the lower end of the lifting column.

The lower extreme of lift screw is provided with the gear box, the slip of lift carriage reciprocates the periphery of setting at the lift screw lower extreme or the periphery of gear box.

The lifting sliding frame is positioned at the lower part of the supporting column or in the bottom box, the lifting sliding frame comprises a sliding upper supporting plate, a sliding guide arm and a sliding lower supporting plate, the upper end and the lower end of the sliding guide arm are respectively fixedly connected with the sliding upper supporting plate and the sliding lower supporting plate, the sliding upper supporting plate is arranged at the periphery of the lower end of the lifting screw rod, and the sliding upper supporting plate is positioned between the top of the gear box and the lower end of the lifting column or between the top of the gear box and the lifting nut.

The lower part or the bottom box of the support column is internally provided with a sliding guide groove, and the sliding guide arm is arranged in the sliding guide groove in a sliding manner, so that the lifting sliding frame is stable in lifting.

The lifting sliding frame further comprises a reset spring, the reset spring is arranged between the top of the gear box and the sliding upper supporting plate, the reset spring is located on the periphery of the lifting screw, two ends of the reset spring respectively support against the sliding upper supporting plate and the gear box, and the reset spring is used for jacking the lifting sliding frame upwards so that the lifting sliding frame and the roller device retract into the supporting column or the bottom box upwards.

The upper sliding support plate is provided with a spring positioning cap, the reset spring is arranged in the spring positioning cap, the top of the spring positioning cap is provided with a yielding hole, the lower end of the lifting screw rod downwards penetrates through the yielding hole and the reset spring and is connected with the gear box, and the spring positioning cap is used for positioning the reset spring.

The roller device is a castor, and the castor is arranged at the bottom of the sliding lower supporting plate.

The utility model also comprises a foot which is fixedly connected with the lower end of the supporting column or the bottom of the bottom box, a sliding guide opening is arranged in the foot, the sliding lower supporting plate and the truckle are arranged in the sliding guide opening in a vertical sliding way, and the truckle can extend out of the sliding guide opening downwards or retract into the sliding guide opening upwards, so that the lifting sliding frame and the roller device are stable in lifting.

The roller device comprises a sliding guide column and a trundle, wherein the sliding guide column is fixedly arranged in the bottom box, the lower end opening of the sliding guide column is exposed out of the bottom box, the upper end of the sliding guide column is fixedly connected with one end of the sliding upper support plate, the sliding guide column is arranged in the sliding guide column in a vertical sliding mode, the trundle is fixedly connected with the lower end of the sliding guide column, and the trundle can downwards extend out of the sliding guide column or upwards retract into the sliding guide column, so that the lifting sliding frame and the trundle are stable in lifting.

The table synchronous lifting system comprises a table lifting motor, a horizontal transmission shaft and a gear box, wherein the end part of the horizontal transmission shaft is provided with a horizontal transmission gear, the lower end of the lifting screw is provided with a vertical transmission gear, the table lifting motor drives the horizontal transmission shaft to rotate, the horizontal transmission gear and the vertical transmission gear are meshed and transmitted and are arranged in the gear box together, and the gear box is fixedly arranged on the lower part of the supporting column or in the bottom box.

The lifting screw rod is controlled to rotate and stop by utilizing the lifting travel switch of the table plate and the descending travel switch of the trundle, so that the lifting travel of the table plate and the descending travel of the trundle are controlled.

The desk plate is provided with a desk plate ascending button, a desk plate descending button and a trundle descending button, wherein the desk plate ascending button and the desk plate descending button are used for controlling the desk plate to ascend and descend, and the trundle descending button is used for controlling the trundle to descend. Therefore, the lifting stroke of the table plate and the descending stroke of the casters can be controlled through the keys.

The beneficial effects of the utility model are as follows:

the utility model adopts the synchronous lifting system of the table plate, the lifting screw rod and the lifting column to drive the table plate to lift and the roller device to descend, and the roller device can lift or descend the whole lifting electric heating table, thereby being convenient for a user to adjust the height of the table plate and push the lifting electric heating table to move according to the needs. Therefore, the utility model has simple structure, low production cost and very convenient use.

Drawings

Fig. 1 is a schematic structural view of a lifting electric heating table convenient to move according to a first embodiment of the utility model.

Fig. 2 is a schematic view of another angle of the lifting electric heating table which is convenient to move.

Fig. 3 is an exploded view of a portable electric warming table according to an embodiment of the present utility model.

Figure 4 is a side view of a conveniently movable lift electric warming table according to an embodiment of the present utility model.

Fig. 5 is a schematic structural view of a lifting carriage and a roller device according to a first embodiment of the present utility model.

Fig. 6 is a top view of a conveniently movable lifting electric heating table according to an embodiment of the present utility model.

Fig. 7 is a cross-sectional view at A-A in fig. 6.

Fig. 8 is a schematic structural diagram of a synchronous lifting system for a desk board according to a first embodiment of the utility model.

Fig. 9 is a schematic view of an internal structure of a table lifting motor according to a first embodiment of the present utility model.

Fig. 10 is a schematic structural diagram of a lifting electric heating table convenient to move according to a second embodiment of the utility model.

Fig. 11 is a schematic view of another angle of a lifting electric heating table convenient to move according to the second embodiment of the utility model.

Fig. 12 is an exploded view of a portable electric heating table according to a second embodiment of the present utility model.

Fig. 13 is an enlarged view at a in fig. 12.

Fig. 14 is a side view of a portable, elevated electric warming table according to a second embodiment of the present utility model.

Fig. 15 is a schematic structural diagram of a lifting carriage and a roller device according to a second embodiment of the present utility model.

Fig. 16 is a top view of a portable electric heating table according to a second embodiment of the present utility model.

Fig. 17 is a cross-sectional view at B-B in fig. 16.

Figure 18 is a top view of a three-way portable, raised and lowered electric warming table according to an embodiment of the present utility model.

Fig. 19 is a cross-sectional view at C-C in fig. 18.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

First embodiment, as shown in fig. 1 to 9, a lift electric heating table convenient to move, including table 1, circuit board, four table legs 3, base box 4, four footings 34, four lift slide frame 5 and four roller device 6, table 1 and base box 4 are the rectangle, four corners of the bottom surface of table 1 are located respectively to four table legs 3, and every table leg 3 includes lift post subassembly 31 and support column 32, lift post subassembly 31 slides from top to bottom and sets up in hollow support column 32, lift post subassembly 31's upper end and table 1 fixed connection, base box 4 fixed connection is in the lower part of support column 32, vertically in the support column 32 is provided with lift screw 82, be equipped with lift internal screw hole 810 on the lift post subassembly 31, lift screw 82 and lift internal screw hole 810 threaded connection, be equipped with table synchronous lift system 7 in the base box 4, table synchronous lift system 7 is connected with lift screw 82's lower extreme transmission to drive lift screw 82 to rotate, lift screw 5 and roller device setting up in the lower part of lower side of the lift post subassembly 6, the roller device is located under the support column 31. When the lifting column assembly and the table plate descend, and the lifting column assembly presses the lifting sliding frame to descend together, the lifting sliding frame drives the roller device to downwards extend out of the lower part of the supporting column or the bottom of the bottom box, the roller device stands on the ground, the lower end of the supporting column and the bottom box are lifted and leave the ground, the whole lifting electric heating table is lifted by the roller device, and a user can push the whole lifting electric heating table to move very conveniently.

As a more specific technical scheme of the utility model.

The lifting column assembly 31 comprises a lifting column 310, a connecting pipe 83 and a lifting nut 81, wherein the connecting pipe 83 is arranged in the lifting column 310, the upper end of the connecting pipe 83 is fixedly connected with the upper end of the lifting column 310, the lifting nut 81 is arranged at the lower end of the connecting pipe 83, the lifting nut 81 is provided with the lifting internal threaded hole 810, the lifting screw is in threaded connection with the lifting nut 81, and the upper end of the lifting screw 82 extends upwards into the connecting pipe 83.

As a more detailed solution of the utility model.

The synchronous lifting system 7 of the desk plate comprises a lifting motor 70 of the desk plate, a first horizontal transmission shaft 71, a second horizontal transmission shaft 72, a third horizontal transmission shaft 73 and four gear boxes, wherein the three horizontal transmission shafts are arranged in the bottom box 4 in a U shape, and the four gear boxes are fixedly arranged in the bottom box 4 or in the four support columns 32 according to rectangular four corners.

The lower ends of the four lifting screws 82 are respectively and fixedly connected with the four gear boxes, and the lifting sliding frame 5 is arranged on the periphery of the lower end of the corresponding lifting screw 82 or the periphery of the corresponding gear box in a vertical sliding manner.

The gearboxes at the lower ends of the four lifting screws 82 are a first gearbox 21, a second gearbox 22, a third gearbox 23 and a fourth gearbox 24, respectively, and the first gearbox 21, the second gearbox 22, the third gearbox 23 and the fourth gearbox 24 are fixedly connected in the bottom box 4.

The vertical transmission gears at the lower ends of the four lifting screws 82 are a first vertical transmission gear 65, a second vertical transmission gear 66, a third vertical transmission gear 67, and a fourth vertical transmission gear 68, respectively.

The motor shaft of the table lifting motor 70 is in driving connection with the first horizontal transmission shaft 71, and the table lifting motor 70 drives the first horizontal transmission shaft 71 to rotate.

One end of the first horizontal transmission shaft 71 is provided with a first horizontal transmission gear 79, and the other end of the first horizontal transmission shaft 71 is provided with a second horizontal transmission gear 78. One end of the second horizontal transmission shaft 72 is provided with a third horizontal transmission gear 77, and the other end of the second horizontal transmission shaft 72 is provided with a fourth horizontal transmission gear 76. One end of the third horizontal transmission shaft 73 is provided with a fifth horizontal transmission gear 75, and the other end of the third horizontal transmission shaft 73 is provided with a sixth horizontal transmission gear 74.

The first horizontal transmission gear 79 and the first vertical transmission gear 65 are arranged in the first gear box 21, the first gear box 21 is arranged in the supporting column 32, and the first horizontal transmission gear 79 and the first vertical transmission gear 65 are meshed.

The second horizontal drive gear 78, the third horizontal drive gear 77 and the second vertical drive gear 66 are disposed within the second gear box 22, the second gear box 22 is disposed within the support column 32, and the second horizontal drive gear 78 is engaged with the second vertical drive gear 66.

The fourth horizontal transmission gear 76, the third vertical transmission gear 67 and the fifth horizontal transmission gear 75 are arranged in the third gear box 23, the third gear box 23 is arranged in the supporting column 32, and the fourth horizontal transmission gear 76 and the third vertical transmission gear 67 are meshed.

The sixth horizontal transfer gear 74 and the fourth vertical transfer gear 68 are disposed within the fourth gearbox 24, the fourth gearbox 24 is disposed within the support column 32, and the sixth horizontal transfer gear 74 and the fourth vertical transfer gear 68 are meshed.

As a more optimal solution of the utility model.

The lifting sliding frame is arranged on the periphery of the lower end of the lifting screw rod or the periphery of the gear box in an up-and-down sliding manner.

The lifting carriage 5 is located in the lower part of the support column 32 or in the bottom box 4.

The lifting sliding frame 5 comprises a sliding upper supporting plate 51, a return spring 54, a sliding guide arm 52 and a sliding lower supporting plate 53, wherein the upper end and the lower end of the sliding guide arm 52 are respectively fixedly connected with the sliding upper supporting plate 51 and the sliding lower supporting plate 53, the sliding upper supporting plate 51 is arranged on the periphery of the lower end of the lifting screw 82, the sliding upper supporting plate 51 is positioned between the top of the gear box and the lower end of the lifting column 310, and of course, the sliding upper supporting plate 51 can also be positioned between the top of the gear box and the lifting nut 81.

A sliding guide groove 36 is provided in the lower portion of the support column 32 or in the bottom case 4, and the sliding guide arm 52 is slidably provided in the sliding guide groove 36.

The return spring 54 is arranged between the top of the gear box and the upper sliding support plate 51, the return spring 54 is positioned at the periphery of the lifting screw 82, and two ends of the return spring 54 respectively abut against the upper sliding support plate 51 and the gear box.

The sliding upper support plate 51 is provided with a spring positioning cap 55, the return spring 54 is arranged in the spring positioning cap 55, the top of the spring positioning cap 55 is provided with a yielding hole 56, and the lower end of the lifting screw 82 downwards passes through the yielding hole 56 and the return spring 54 and is connected with the gear box.

The roller device 6 is a caster wheel provided at the bottom of the sliding lower support plate 53.

The four feet 34 are respectively and fixedly connected to the lower ends of the four support columns 32, of course, the feet 34 can also be fixedly connected to the bottom of the bottom box 4, a sliding guide opening 35 is arranged in the feet 34, the sliding lower support plate 53 and the casters are arranged in the sliding guide opening 35 in a vertical sliding manner, and the casters can extend out of the sliding guide opening 35 downwards or retract into the sliding guide opening 35 upwards.

The lifting travel of the table plate and the descending travel of the casters can be controlled through the travel switch, and the lifting travel switch of the table plate and the descending travel switch of the casters are arranged in the lifting motor 70 of the table plate.

The utility model can also control the lifting electric heating table by a key control mode, wherein a table lifting key (not shown in the figure), a table descending key (not shown in the figure) and a caster descending key (not shown in the figure) for controlling the casters to descend are arranged on the table. Therefore, the user can control the lifting stroke of the desk plate and the descending stroke of the casters through the keys.

More specifically, a transmission screw rod 715, a screw rod slider 714, a table lifting travel switch 716 and a caster lifting travel switch 717 are arranged in the shell 710 of the table lifting motor, a threaded rod 712 is arranged on a motor shaft of the table lifting motor, the transmission screw rod 715 is rotatably arranged in the shell 710, a transmission matching gear 713 is sleeved on the transmission screw rod 715, the transmission matching gear 713 and the transmission screw rod 715 are synchronously rotated in a transmission mode, the transmission matching gear 713 is meshed with the threaded rod 712, the screw rod slider 714 is in threaded connection with the transmission screw rod 715, the screw rod slider 714 is slidably arranged in the shell 710, the table lifting travel switch 716 and the caster lifting travel switch 717 are arranged in the shell 710 along the length direction of the transmission screw rod 715, the table lifting motor drives the threaded rod 712 to positively rotate or reversely rotate, the threaded rod 712 drives the transmission screw rod 715 to rotate through the transmission matching gear 713, and the transmission screw rod 714 is driven to slide back and forth.

The utility model utilizes the lifting travel switch 716 of the desk plate and the descending travel switch 717 of the caster to control the rotation and stop of the lifting screw, thereby realizing the control of the lifting travel of the desk plate and the descending travel of the caster. When the motor shaft of the table lift motor rotates in the forward direction, the nut slider contacts the table lift switch 716, the table lift switch 716 sends a signal to the circuit board, the circuit board controls the table lift motor to stop rotating, the threaded rod 712 and the lifting screw to stop rotating, and the table stops lifting, and similarly, the working principle of the caster lift switch 717 of the present utility model is not described in detail herein.

The working principle of the utility model is as follows:

when the user wants to control the lifting of the table board 1 at the same time, the user can control the lifting of the table board 1 according to the utility model by pressing the control keys such as the table board lifting key and the table board descending key on the table board 1.

When the table plate synchronous lifting system 7 drives the table plate 1 to descend, the table plate lifting motor 70 drives the first horizontal transmission shaft 71 to reversely rotate, one end of the first horizontal transmission shaft 71 drives the first lifting screw 82 to reversely rotate through the first horizontal transmission gear 79 and the first vertical transmission gear 65, the other end of the first horizontal transmission shaft 71 drives the second horizontal transmission shaft 72 and the second lifting screw 82 to reversely rotate synchronously through the second horizontal transmission gear 78, the second vertical transmission gear 66 and the third horizontal transmission gear 77, the other end of the second horizontal transmission shaft 72 drives the third horizontal transmission shaft 73 and the third lifting screw 82 to reversely rotate synchronously through the fourth horizontal transmission gear 76, the third vertical transmission gear 67 and the fifth horizontal transmission gear 75, the other end of the third horizontal transmission shaft 73 drives the fourth lifting screw 82 to reversely rotate synchronously through the sixth horizontal transmission gear 74 and the fourth vertical transmission gear 68, and the four lifting screws 82 and the four lifting nuts 81 synchronously descend due to the threaded cooperation of the four lifting screws 81, so that the table plate 1 is kept to horizontally descend, and finally the table plate 1 is in a descending state, the distance between the bottom surface of the table plate 1 and the supporting plate is still kept by the sliding support plate 32, and the lifting nut 81 is still kept at the distance from the top end of the supporting plate 1 is still not pressed by the lifting nut 32 (the supporting plate 1 is still in a sliding stage, and the supporting plate 32 is still kept at the distance from the lifting nut 32 is still at the top end is still under the lifting nut 32). Conversely, if the user wants to control the table 1 to ascend, the table lifting motor 70 rotates forward, so that the table 1 can be controlled to ascend, and finally the height of the table 1 is adjusted. Therefore, the present utility model can control the lifting of the table 1.

When the user wants to lift and move the whole lifting electric warming table, the user needs to control the table 1 to drop to a descending state firstly, then the user presses the caster descending key, the table lifting motor 70 continues to drive the first horizontal transmission shaft 71 to reversely rotate, the four lifting screws 82 continue to reversely rotate, the table 1 continues to descend, the four lifting nuts 81 respectively press the four lifting sliding frames 5 to descend, the reset springs 54 are compressed, the four lifting sliding frames 5 drive the respective roller devices 6 to descend, the four roller devices 6 descend to the lower ends of the supporting columns 32, the lower ends of the supporting columns 32 are gradually lifted, the four roller devices 6 stand on the ground and support the whole lifting electric warming table, and then the user can push the whole lifting electric warming table to move very easily. When the user moves the electric heating table in place, the user controls the height of the table board 1 when the table board 1 ascends to a descending state, the four lifting screw rods 82 positively rotate to drive the four lifting nuts 81 to ascend, the lifting nuts 81 do not press the lifting sliding frame 5 any more, the lifting sliding frame 5 is lifted into the supporting column 32 by the reset spring 54, the roller device 6 also retracts into the supporting column 32 together, and the lower end of the supporting column 32 stands on the ground.

As shown in fig. 10 to 17, the second embodiment is similar to the first embodiment in that: the roller device 6 is arranged at the bottom of the bottom box 4 in a vertical sliding way. The roller device 6 comprises a sliding guide column 57 and a caster 61, wherein the sliding guide cylinder 41 is fixedly arranged in the bottom box 4, the lower end opening of the sliding guide cylinder 41 is exposed out of the bottom box 4, the upper end of the sliding guide column 57 is fixedly connected with one end of the sliding upper support plate 51, the sliding guide column 57 is arranged in the sliding guide cylinder 41 in a vertical sliding manner, the caster 61 is fixedly connected with the lower end of the sliding guide column 57, and when the lifting sliding frame of the utility model is lifted, the caster 61 can extend out of the sliding guide cylinder 41 downwards or retract into the sliding guide cylinder 41 upwards.

Embodiment III as shown in FIGS. 18 to 19, the embodiment of embodiment III is similar to that of embodiment one, except that: the lifting column assembly 31 comprises a lifting column 310 and a lifting nut 81, wherein the lifting nut 81 is provided with a lifting internal threaded hole 810, the lifting nut 81 is arranged at the lower end of the lifting column 310, of course, the lifting nut 81 can also be arranged in the lifting column 310, if the lifting nut 81 is arranged at the lower end of the lifting column 310, the lifting nut 81 is used for pressing the lifting sliding frame to descend, if the lifting nut 81 is arranged in the lifting column 310, the lifting nut 81 is higher than the lifting column 310 in level, and the lifting sliding frame is pressed downwards by the lower end of the lifting column 310 to descend.

Claims (14)

1. The utility model provides a convenient lift electric heating table that removes, includes table, lift post subassembly, support column and base box, lift post subassembly's upper end and table fixed connection, lift post subassembly slides from top to bottom and sets up in hollow support column, base box fixed connection is in the lower part of support column, be equipped with the lift internal thread hole on the lift post subassembly, vertically be provided with the lift screw in the support column, lift screw and lift internal thread hole threaded connection, be equipped with the synchronous lift system of table in the base box, the synchronous lift system of table drives the lift screw and rotates, and characterized by still includes lift carriage and the roller device of locating on the lift carriage, the lift carriage slides from top to bottom and sets up in the below of lift post subassembly, the roller device slides from top to bottom and sets up in the lower part of support column or the bottom of base box, and when lift post subassembly descends, and lift post subassembly is pressing the lift carriage and descends together, the lift carriage drives the lower part or the bottom of roller device downwardly extending support column; when the lifting column assembly rises and the lifting column assembly does not press the lifting sliding frame, the lifting sliding frame and the roller device retract upwards into the supporting column or the bottom box.

2. The portable electric heating table of claim 1, wherein the lifting column assembly comprises a lifting column, a connecting pipe and a lifting nut, the connecting pipe is arranged in the lifting column, the connecting pipe is fixedly connected with the lifting column, the lifting nut is arranged on the connecting pipe, the lifting nut is provided with the lifting internal thread hole, and the upper end of the lifting screw rod extends into the connecting pipe upwards.

3. The portable electric heating table of claim 1, wherein the lifting column assembly comprises a lifting column and a lifting nut, the lifting nut is disposed in the lifting column or at the lower end of the lifting column, and the lifting nut is provided with the lifting internal threaded hole.

4. The portable electric heating table according to claim 3, wherein a gear box is provided at a lower end of the lifting screw, and the lifting carriage is slidably disposed at a lower end periphery of the lifting screw or a periphery of the gear box.

5. The portable electric heating table of claim 4, wherein the lifting carriage is located in the support column or the bottom box, the lifting carriage comprises an upper sliding support plate, a guiding sliding arm and a lower sliding support plate, the upper end and the lower end of the guiding sliding arm are respectively and fixedly connected with the upper sliding support plate and the lower sliding support plate, the upper sliding support plate is arranged on the periphery of the lower end of the lifting screw, and the upper sliding support plate is located between the top of the gear box and the lower end of the lifting column or between the top of the gear box and the lifting nut.

6. The portable electric heating table of claim 5, wherein a sliding guide groove is provided in the lower part of the support column or in the bottom case, and the sliding guide arm is slidably disposed in the sliding guide groove.

7. The portable electric heating table of claim 5, further comprising a return spring disposed between the top of the gear case and the upper sliding support plate, the return spring being disposed at the periphery of the lifting screw, and both ends of the return spring being respectively abutted against the upper sliding support plate and the gear case.

8. The lifting electric heating table convenient to move according to claim 7, wherein a spring positioning cap is arranged on the sliding upper supporting plate, the reset spring is arranged in the spring positioning cap, a yielding hole is formed in the top of the spring positioning cap, and the lower end of the lifting screw rod downwards penetrates through the yielding hole and the reset spring and is connected with the gear box.

9. The portable lift table heater according to claim 5, wherein the roller assembly is a caster wheel disposed at the bottom of the lower support plate.

10. The lifting electric heating table convenient to move according to claim 9, further comprising a foot fixedly connected to the lower end of the support column or the bottom of the bottom box, wherein a sliding guide opening is formed in the foot, the sliding lower support plate and the caster are arranged in the sliding guide opening in a vertically sliding manner, and the caster can extend out of the sliding guide opening downwards or retract into the sliding guide opening upwards.

11. The lifting electric heating table convenient to move according to claim 5, wherein the roller device comprises a sliding guide column and a caster wheel, the sliding guide cylinder is fixedly arranged in the bottom box, the lower end opening of the sliding guide cylinder is exposed out of the bottom box, the upper end of the sliding guide column is fixedly connected with one end of the sliding upper supporting plate, the sliding guide column is arranged in the sliding guide cylinder in a vertical sliding manner, the caster wheel is fixedly connected with the lower end of the sliding guide column, and the caster wheel can extend out of the sliding guide cylinder downwards or retract into the sliding guide cylinder upwards.

12. The lifting electric heating table convenient to move according to claim 4, wherein the table synchronous lifting system comprises a table lifting motor, a horizontal transmission shaft and a gear box, a horizontal transmission gear is arranged at the end part of the horizontal transmission shaft, a vertical transmission gear is arranged at the lower end of the lifting screw, the table lifting motor drives the horizontal transmission shaft to rotate, the horizontal transmission gear and the vertical transmission gear are meshed and transmitted and are arranged in the gear box together, and the gear box is fixedly arranged at the lower part of the support column or in the bottom box.

13. The portable lift electric warming table of claim 12 wherein the table lift motor is provided with a table lift travel switch, a table lower travel switch and a caster lower travel switch.

14. The portable, elevated, electrically heated table of claim 12 wherein the table is provided with a table-top up button for controlling the elevation of the table, a table-top down button and a caster-down button for controlling the lowering of the casters.

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