Warming table with wheel set lifting in middle layer

Abstract

A heating table with a lifting middle layer and a lifting wheel set comprises a base, a panel arranged on the base through stand columns, a middle layer assembly located between the base and the panel, the moving wheel set arranged on the lower portion of the middle layer assembly and a middle layer lifting driving device in transmission connection with the middle layer assembly. According to the heating table with the middle layer and the wheel sets capable of ascending and descending, the middle layer assembly and the moving wheel sets can be independently controlled to ascend and descend, the use experience of a user on the electric heating table is improved, and the attraction of a product is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of heating table, concretely relates to a heating table of middle layer and wheel group lifting. BACKGROUND

[0002] Electric heating table is also called electric heating table, which is a new type of heating appliance integrating table and heater. Based on traditional table, modern technology and aesthetics are integrated, and far infrared radiation and convection heating are used. At present, electric heating table mainly includes electric ceramic stove heating table, electric heating tea table, electric heating dining table, electric heating desk and electric heating mahjong table. Compared with traditional heating tools, electric heating table has the following advantages: fast heating, balanced temperature, convenient temperature adjustment, speed adjustment, less influence of power supply voltage on self-heating, long service life, design matching with home color tone, and elegant appearance.

[0003] In order to warm the user's feet through the electric heating table, the electric heating table is provided with a middle layer support. However, the conventional middle layer support is a fixed structure and cannot be lifted. When the user uses the electric heating table for heating, in order to maintain a comfortable sitting posture, the user can only place the feet on the base or place the feet on the middle layer support to better warm the feet, so that the user cannot maintain a comfortable sitting posture. In order to facilitate the user to move the electric heating table, the electric heating table is provided with casters. However, the conventional casters are fixed to the base of the electric heating table and support the electric heating table. The casters roll in contact with the ground to make the electric heating table easy to shift when stationary, thus resulting in poor user experience of the electric heating table and reduced product appeal.

[0004] Therefore, further improvement is needed. UTILITY MODEL CONTENTS

[0005] The utility model aims to overcome at least one of the deficiencies of the prior art, and provide a heating table of middle layer and wheel group lifting, which can independently control the middle layer assembly and the moving wheel group lifting, improve the user experience of the electric heating table, and improve the product appeal.

[0006] To achieve the above-mentioned purpose, the technical scheme provided by the utility model embodiment is as follows:

[0007] A heating table of middle layer and wheel group lifting, comprising a base, a panel provided on the base through a stand, a middle layer assembly located between the base and the panel, a moving wheel group provided at the lower part of the middle layer assembly, and a middle layer lifting driving device in transmission connection with the middle layer assembly.

[0008] The middle layer lifting driving device drives the middle layer assembly to move downward and pushes the middle layer assembly downward relative to the base to withdraw the moving wheel group, so that the heating table can be adjusted in position by the moving wheel group. The middle layer lifting driving device drives the middle layer assembly to move upward and reset, and the moving wheel group moves upward and is recovered.

[0009] The middle layer lifting driving device is only in transmission connection with the middle layer assembly and is only used to drive the middle layer assembly to move up and down;

[0010] The heating table further comprises a panel lifting driving device, which is used to drive the panel to move up and down, so that the up and down movement of the panel is independent of the up and down movement of the middle layer assembly, and the up and down movement of the wheel set is not affected by the up and down movement of the panel.

[0011] The middle layer lifting driving device comprises a first driving motor, a first transmission mechanism, a middle layer connecting piece and a wheel set connecting piece, the first driving motor and the first transmission mechanism are in transmission connection and are both arranged on the base, the middle layer connecting piece is connected with the middle layer assembly and is in transmission connection with the first transmission mechanism, the wheel set connecting piece is arranged corresponding to the middle layer connecting piece and is connected with the moving wheel set and moves together with the middle layer connecting piece;

[0012] The first transmission mechanism is four groups and is arranged at four corners of the base respectively, and the middle layer connecting piece is four and is arranged at four corners of the middle layer assembly respectively.

[0013] The first transmission mechanism comprises a first transmission box, a first transmission shaft and a first screw rod, the first driving motor is in transmission connection with the first transmission box through the first transmission shaft, and one end of the first screw rod is in threaded connection with the middle layer connecting piece and the other end is in transmission connection with the first transmission box.

[0014] The first transmission box comprises a shell, a first gear and a second gear, the first gear and the second gear are arranged in the shell, one end of the first transmission shaft extends into the shell and is in transmission connection with the first gear, and the bottom end of the first screw rod extends into the shell and is in transmission connection with the second gear, and the first gear and the second gear are in meshing connection.

[0015] The wheel set connecting piece comprises an upper plate, a lower plate and a connecting column, the upper plate is above the first transmission box, the lower plate is below the first transmission box, the connecting column is arranged between the upper plate and the lower plate and slides up and down on the first transmission box, the connecting column is four and is located at four corners of the wheel set connecting piece, the upper plate is provided with a first through hole, the first screw rod passes through the upper plate through the first through hole and extends to the first transmission box, and the moving wheel set is arranged on the lower plate.

[0016] The first transmission box is provided with a mounting hole and a connecting hole, the mounting hole and the connecting hole are both arranged in the up and down direction of the first transmission box, the mounting hole is four and is located at four corners of the first transmission box respectively for fixing and mounting the first transmission box, and the connecting hole is four and is located on one side of the mounting hole close to the center of the first transmission box and is arranged corresponding to the connecting column.

[0017] The mounting structure is arranged between the middle layer assembly and the middle layer connecting piece, and comprises a mounting screw hole, a mounting through hole and a fastening component.

[0018] The positioning structure is arranged between the wheel set connecting piece and the middle layer connecting piece, and comprises a positioning column and a positioning counterbore.

[0019] The first guide structure is arranged between the middle layer connecting piece and the base, and comprises a guide column and a guide hole.

[0020] The transmission part is arranged in the guide hole, and the side wall of the guide column is provided with an avoiding slot.

[0021] The second guide structure is further arranged between the guide column and the guide hole, and comprises a guide slot and a guide convex rib.

[0022] The panel lifting driving device comprises a second driving motor, a second transmission shaft connected with the output end of the second driving motor, a second transmission box connected with the output end of the second transmission shaft, a second screw rod located on the inner side of the stand and connected with the output end of the second transmission box, and a second lifting rod assembly movably arranged on the second screw rod through a second nut sleeve.

[0023] The panel lifting driving device comprises a second driving motor, a second transmission shaft connected with the output end of the second driving motor, a second transmission box connected with the output end of the second transmission shaft, a second screw rod located on the inner side of the stand and connected with the output end of the second transmission box, and a second lifting rod assembly movably arranged on the second screw rod through a second nut sleeve.

[0024] The utility model discloses a heating table of middle layer, wheel group lifting through adopting above technical scheme, and middle layer lifting drive arrangement can independently drive middle layer assembly, mobile wheel group up and down movement, when middle layer assembly moves down, middle layer assembly pushes out mobile wheel group down relative to the base, makes middle layer assembly restore static state, and heating table carries out position movement adjustment through mobile wheel group, when middle layer assembly moves up, mobile wheel group moves up recycling under the heating table gravity, makes middle layer assembly adjust to the position of people's sitting posture comfortable, and mobile wheel group leaves ground and hangs in the air, avoids the displacement of heating table when being static, improves the use experience of user to electric heating table, improves the attraction of product. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is structure schematic diagram of heating table of middle layer, wheel group lifting of an embodiment of the utility model.

[0026] Figure 2 It is schematic drawing of middle layer lifting drive arrangement on heating table of an embodiment of the utility model.

[0027] Figure 3 It is structure schematic diagram of middle layer lifting drive arrangement of an embodiment of the utility model.

[0028] Figure 4 It is exploded view of middle layer lifting drive arrangement of an embodiment of the utility model.

[0029] Figure 5 It is exploded view of first transmission case of an embodiment of the utility model.

[0030] Figure 6 It is Figure 2 Enlarged view of A of

[0031] Figure 7 It is connection schematic drawing of middle layer connecting piece and middle layer assembly of an embodiment of the utility model.

[0032] Figure 8 It is connection schematic drawing of middle layer connecting piece and guide column of an embodiment of the utility model.

[0033] Figure 9 It is working schematic drawing of middle layer lifting drive arrangement of an embodiment of the utility model.

[0034] Figure 10 It is working schematic drawing of middle layer lifting drive arrangement of an embodiment of the utility model.

[0035] Figure 11 It is working schematic drawing of middle layer lifting drive arrangement of an embodiment of the utility model.

[0036] Figure 12The utility model discloses an embodiment panel lifting drive device is located on the schematic diagram of warming table. DETAILED DESCRIPTION

[0037] In order to make the utility model embodiment purposes, technical scheme and advantage more clearly, below, with the drawings in the utility model embodiment, the technical scheme in the utility model embodiment is clearly, completely described, obviously, the described embodiment is the part embodiment of the utility model, not all embodiments.

[0038] Refer to Figures 1-12 , the middle layer, wheel group lifting warming table, including base 1, panel 3, stand 2, middle layer assembly 4, mobile wheel group 51, middle layer lifting drive device 5 and panel lifting drive device 6, specifically, the number of stand 2 is preferably four and is arranged in the four corners of warming table, panel 3 is arranged on base 1 through stand 2, panel lifting drive device 6 is arranged on base 1 and is located in stand 2, so that the warming table can control the lifting of panel 3 independently, middle layer assembly 4 is located between base 1 and panel 3, mobile wheel group 51 is preferably universal caster and / or directional caster and is arranged in the lower part of middle layer assembly 4, middle layer lifting drive device 5 is arranged on base 1 and is only drivingly connected with middle layer assembly 4, so that middle layer lifting drive device 5 controls the up-and-down movement of middle layer assembly 4 independently and drives mobile wheel group 51 to move up and down together, the up-and-down movement of panel 3 is independent of the up-and-down movement of middle layer assembly 4, and the up-and-down movement of mobile wheel group 51 is not affected by the up-and-down movement of panel 3, when middle layer assembly 4 moves downward, middle layer assembly 4 restores the initial position, middle layer assembly 4 pushes mobile wheel group 51 downward relative to base 1, the warming table moves and adjusts position through mobile wheel group 51, so as to facilitate people to move the warming table, when middle layer assembly 4 moves upward, middle layer assembly 4 can be adjusted to the position comfortable for people's sitting posture, mobile wheel group 51 moves upward and recovers under the action of the gravity of the warming table, mobile wheel group 51 leaves the ground and is suspended, the four table legs of the warming table contact the ground, avoiding the warming table from shifting when it is stationary, improving the user's experience of using the electric warming table and the attraction of the product.

[0039] Further, the middle layer lifting driving device 5 comprises a first driving motor 52, a first transmission mechanism 53, a middle layer connecting piece 54 and a wheel set connecting piece 55. Specifically, in the embodiment, the number of the first driving motor 52 is preferably one and is fixedly installed on the base 1, the number of the first transmission mechanism 53 is preferably four and is respectively fixedly installed at four corners of the base 1, which comprises a first transmission box 530, a first transmission shaft 531 and a first screw rod 532, the number of the middle layer connecting piece 54 is preferably four and is respectively connected with four corners of the middle layer assembly 4 and four groups of the first transmission mechanism 53 through mounting structures, the number of the wheel set connecting piece 55 is preferably four and is respectively connected with the moving wheel set 51 through welding and the like by corresponding to the middle layer connecting piece 54, the first driving motor 52 is in driving connection with the first transmission box 530 through the first transmission shaft 531, one end of the first screw rod 532 is in threaded connection with the middle layer connecting piece 54 and the other end thereof is in driving connection with the first transmission box 530, when the first driving motor 52 works and drives the first transmission shaft 531 to rotate, the first transmission shaft 531 drives the first transmission box 530 to work and drives the first screw rod 532 to rotate, the first screw rod 532 and the middle layer connecting piece 54 are in threaded cooperation with each other to realize the rising or lowering of the middle layer connecting piece 54, so as to realize the independent control of the lifting of the middle layer assembly 4 and the moving wheel set 51, which can be understood by those skilled in the art.

[0040] Further, in the embodiment, the first transmission box 530 comprises a shell 5301, a first gear 5302 and a second gear 5303, specifically, the first gear 5302 and the second gear 5303 are arranged in the shell 5301, one end of the first transmission shaft 531 extends into the shell 5301 and is in driving connection with the first gear 5302, the bottom end of the first screw rod 532 extends into the shell 5301 and is in driving connection with the second gear 5303, the first gear 5302 is in meshing connection with the second gear 5303, the first driving motor 52 drives the first transmission shaft 531 to rotate, the first transmission shaft 531 drives the first gear 5302 to rotate, the first gear 5302 drives the second gear 5303 to rotate, the second gear 5303 drives the first screw rod 532 to rotate, the first screw rod 532 drives the middle layer connecting piece 54 to rise or lower in the process of rotating, which can be understood by those skilled in the art.

[0041] Further, the wheel set connecting member 55 comprises an upper plate 550, a lower plate 551 and connecting columns 552. Specifically, in the embodiment, the connecting columns 552 are arranged between the upper plate 550 and the lower plate 551. When the wheel set connecting member 55 is installed on the first transmission box 530, the upper plate 550 is located above the first transmission box 530, the lower plate 551 is located below the first transmission box 530, and the connecting columns 552 are slidingly arranged on the first transmission box 530. The number of the connecting columns 552 is preferably four and is located at the four corners of the wheel set connecting member 55. When the middle layer connecting member 54 moves downward relative to the first transmission mechanism 53, the middle layer connecting member 54 approaches and abuts against the upper plate 550 to push the wheel set connecting member 55 to move downward. The lower plate 551 moves downward with the upper plate 550 through the connecting columns 552. When the middle layer connecting member 54 moves upward relative to the first transmission mechanism 53, the middle layer connecting member 54 moves away from the upper plate 550, and the lower plate 551 moves upward under the action of gravity of the warming table to realize the lifting of the wheel set connecting member 55. Those skilled in the art can understand.

[0042] Further, the upper plate 550 is provided with a first through hole 5501. Specifically, in the embodiment, the first through hole 5501 is arranged through the upper plate 550. The first lead screw 532 passes through the upper plate 550 through the first through hole 5501 and extends into the housing 5301 of the first transmission box 530. When the middle layer connecting member 54 is installed on the housing 5301 of the first transmission box 530, the upper plate 550 does not interfere with the first lead screw 532. Those skilled in the art can understand.

[0043] Further, the first transmission box 530 is provided with a mounting hole 5304 and a connecting hole 5305. Specifically, in the embodiment, the mounting hole 5304 and the connecting hole 5305 are arranged in the upward and downward directions of the first transmission box 530. The mounting hole 5304 is arranged in the upward and downward directions of the first transmission box 530 and the number thereof is preferably four and is located at the four corners of the first transmission box 530. The first transmission box 530 is fixed by cooperating with the fastening structure through the mounting hole 5304. The connecting hole 5305 is arranged in the upward and downward directions of the first transmission box 530 and the number thereof is preferably four and is located on the side of the mounting hole 5304 close to the center of the first transmission box 530 and corresponds to the arrangement of the connecting column 552. The connecting column 552 is inserted into the connecting hole 5305 and moves back and forth in the extension direction of the connecting hole 5305 to realize the movement of the wheel set connecting member 55 in the upward and downward directions of the transmission assembly. Those skilled in the art can understand.

[0044] Further, in the embodiment, the mounting structure comprises the mounting screw hole 401, the mounting through hole 54032 and the fastening component. Specifically, the mounting screw hole 401 is arranged on the bottom surface of the middle layer assembly 4 and located at the corner of the middle layer assembly 4. The mounting through hole 540 is arranged on the middle layer connecting piece 54 and located near the end of the middle layer assembly 4. The fastening component is preferably a screw. When the fastening component is screwed through the mounting through hole 540 and the mounting screw hole 401, the middle layer connecting piece 54 is mounted on the middle layer assembly 4, which can be understood by those skilled in the art.

[0045] Further, the positioning structure is arranged between the wheel set connecting piece 55 and the middle layer connecting piece 54. Specifically, in the embodiment, the positioning structure comprises the positioning column 553 and the positioning counterbore 541. The positioning column 553 is hollow and arranged integrally or separately on the top end of the upper plate 550 of the wheel set connecting piece 55. When the wheel set connecting piece 55 is mounted on the first transmission mechanism 53, the positioning column 553 is sleeved on the outside of the first lead screw 532. The middle layer connecting piece 54 is provided with a transmission part 543 for driving connection with the first lead screw 532 of the first transmission mechanism 53. The positioning counterbore 541 is arranged on the bottom end of the middle layer connecting piece 54 and located on the outside of the transmission part 543. When the middle layer connecting piece 54 approaches the wheel set connecting piece 55, the positioning column 553 partially extends into and abuts against the positioning counterbore 541, so that the middle layer connecting piece 54 is positioned and abuts against the wheel set connecting piece 55, avoiding the position deviation of the middle layer connecting piece 54 and the wheel set connecting piece 55 when they contact each other, and ensuring the effect of the middle layer connecting piece 54 pushing the wheel set connecting piece 55, which can be understood by those skilled in the art.

[0046] Further, the first guide structure is arranged between the middle layer connecting piece 54 and the base 1. Specifically, in the embodiment, the first guide structure comprises the guide column 101 and the guide hole 542. The guide column 101 is fixed on the top surface of the base 1 through the fastening structure and located on the side of the stand 2 facing the center of the heating table. The guide hole 542 is arranged on the middle layer connecting piece 54. When the guide hole 542 is sleeved on the outer wall of the guide column 101, the middle layer connecting piece 54 is arranged on the guide column 101 in an up-down sliding manner. Through the above technical solution, the middle layer connecting piece 54 is guided and moved in the height direction of the heating table, which can be understood by those skilled in the art.

[0047] Further, in the embodiment, the transmission part 543 of the middle layer connecting piece 54 is arranged in the guide hole 542 and connected to the side wall of the guide hole 542 close to the stand 2, the guide column 101 is hollow and has an avoiding groove 1011 on the side wall, the avoiding groove 1011 is away from the center of the heating table, when the middle layer connecting piece 54 is arranged on the guide column 101, the transmission part 543 is in the inner cavity of the guide column 101, the transmission part 543 extends into the inner part of the guide column 101 through the avoiding groove 1011, so that the middle layer connecting piece 54 and the guide column 101 do not interfere with each other, and the normal sliding of the middle layer connecting piece 54 on the guide column 101 is ensured, which can be understood by those skilled in the art.

[0048] Further, the second guide structure is arranged between the guide column 101 and the guide hole 542, specifically, in the embodiment, the second guide structure includes the guide groove 1012 and the guide convex rib 544, the number of the guide groove 1012 is preferably two and arranged on the front and back sides of the side wall of the inner cavity of the guide column 101 and extends along the length direction of the guide column 101, the number of the guide convex rib 544 is preferably two and arranged on the front and back sides of the side wall of the guide hole 542 and extends along the length direction of the middle layer connecting piece 54, when the guide column 101 is inserted into the guide hole 542, the guide groove 1012 and the guide convex rib 544 slide with each other, through the above technical solution, the middle layer connecting piece 54 is further guided and moved along the height direction of the electric heating table, which can be understood by those skilled in the art.

[0049] Further, in the embodiment, the panel lifting driving device 6 is located outside the middle layer lifting driving device 5, the panel lifting driving device 6 includes the second driving motor 61, the second transmission shaft 62, the second transmission box 63, the second screw rod 64, the second nut sleeve 65 and the second lifting rod assembly 66, specifically, the second driving motor 61 and the second transmission shaft 62 are fixedly arranged on the base 1, the output end of the second driving motor 61 is connected to the input end of the second transmission box 63 through the second transmission shaft 61, the second lifting rod assembly 66 is arranged on the bottom surface of the panel 3, the stand 2 is located outside the second lifting rod assembly 66, the second nut sleeve 65 is arranged at the bottom end of the second lifting rod assembly 66, the second screw rod 64 is located inside the stand 2 and connected to the output end of the second transmission box 63 at the bottom end, the second lifting rod assembly 66 is movably connected to the top end of the second screw rod 64 through the second nut sleeve 65, when the second driving motor 61 works and drives the second transmission shaft 62 to rotate, the second transmission shaft 62 drives the second transmission box 63 to work and drives the second screw rod 64 to rotate, the second screw rod 64 and the second nut sleeve 65 are threadedly matched with each other to drive the second lifting rod assembly 66 to move up and down, so as to realize the independent lifting control of the panel 3, which can be understood by those skilled in the art.

[0050] The above is the preferred scheme of the utility model, and the basic principle, main features and advantages of the utility model are displayed and described. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only for the purpose of illustrating the principle of the utility model. The utility model can have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed, and the scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A middle layer, wheel group lifting heating table, characterized in that, The warming table comprises a base (1), a panel (3) arranged on the base (1) through a stand (2), a middle layer assembly (4) between the base (1) and the panel (3), a moving wheel set (51) arranged at the lower part of the middle layer assembly (4), and a middle layer lifting driving device (5) in transmission connection with the middle layer assembly (4); The middle layer lifting driving device (5) drives the middle layer assembly (4) to move downward and pushes the middle layer assembly (4) to move the moving wheel set (51) downward relative to the base (1), so that the warming table can be adjusted in position through the moving wheel set (51); the middle layer lifting driving device (5) drives the middle layer assembly (4) to move upward and resets the moving wheel set (51).

2. The multi-level, wheel group lifted warming table according to claim 1, wherein, The middle layer lifting driving device (5) is only in transmission connection with the middle layer assembly (4) and is only used for driving the middle layer assembly (4) to move upward and downward. The warming table further comprises a panel lifting driving device (6) for driving the panel (3) to move upward and downward, so that the upward and downward movement of the panel (3) is independent of the upward and downward movement of the middle layer assembly (4), and the upward and downward movement of the moving wheel set (51) is not affected by the upward and downward movement of the panel (3).

3. The multi-level, wheel group lifted warming table of claim 2, wherein, The middle layer lifting driving device (5) comprises a first driving motor (52), a first transmission mechanism (53), a middle layer connecting piece (54), and a wheel set connecting piece (55), the first driving motor (52) and the first transmission mechanism (53) are in transmission connection and are both arranged on the base (1), the middle layer connecting piece (54) is connected with the middle layer assembly (4) and is in transmission connection with the first transmission mechanism (53), and the wheel set connecting piece (55) is arranged corresponding to the middle layer connecting piece (54) and is connected with the moving wheel set (51) and moves together with the middle layer connecting piece (54). The first transmission mechanism (53) is four groups and is arranged at four corners of the base (1), and the middle layer connecting piece (54) is four and is arranged at four corners of the middle layer assembly (4).

4. The multi-level, wheel group lifted warming table of claim 3, wherein, The first transmission mechanism (53) comprises a first transmission box (530), a first transmission shaft (531), and a first screw rod (532), the first driving motor (52) is in transmission connection with the first transmission box (530) through the first transmission shaft (531), and one end of the first screw rod (532) is in threaded connection with the middle layer connecting piece (54) and the other end is in transmission connection with the first transmission box (530).

5. The multi-level, wheel group lifted warming table of claim 4, wherein, The first transmission box (530) comprises a shell (5301), a first gear (5302), and a second gear (5303), the first gear (5302) and the second gear (5303) are arranged in the shell (5301), one end of the first transmission shaft (531) extends into the shell (5301) and is in transmission connection with the first gear (5302), the bottom end of the first screw rod (532) extends into the shell (5301) and is in transmission connection with the second gear (5303), and the first gear (5302) and the second gear (5303) are in meshing connection.

6. The multi-level, wheel group lifted warming table of claim 4, wherein, The wheel set connecting piece (55) comprises an upper plate (550), a lower plate (551) and a connecting column (552), the upper plate (550) is located above the first transmission box (530), the lower plate (551) is located below the first transmission box (530), the connecting column (552) is arranged between the upper plate (550) and the lower plate (551) and slides up and down on the first transmission box (530), the connecting column (552) is four and is located at four corners of the wheel set connecting piece (55), the upper plate (550) is provided with a first through hole (5501), the first lead screw (532) passes through the upper plate (550) through the first through hole (5501) and extends to the first transmission box (530), and the moving wheel set (51) is arranged on the lower plate (551).

7. The multi-level, wheel group lifted warming table of claim 4, wherein, The first transmission box (530) is provided with a mounting hole (5304) and a connecting hole (5305), the mounting hole (5304) and the connecting hole (5305) are arranged in the up-down direction of the first transmission box (530), the mounting hole (5304) is four and is located at four corners of the first transmission box (530) respectively for fixing and mounting the first transmission box (530), and the connecting hole (5305) is four and is located on one side of the mounting hole (5304) close to the center of the first transmission box (530) and corresponds to the connecting column (552).

8. The multi-level, wheel group lifted warming table of claim 3, wherein, The mounting structure is arranged between the middle layer assembly (4) and the middle layer connecting piece (54), the mounting structure comprises a mounting screw hole (401), a mounting through hole (540) and a fastening part, the mounting screw hole (401) is arranged on the middle layer assembly (4), the mounting through hole (540) is arranged on the middle layer connecting piece (54), and the fastening part passes through the mounting through hole (540) and is screwed with the mounting screw hole (401), so that the middle layer connecting piece (54) is mounted on the middle layer assembly (4).

9. The multi-level, wheel group lifting warming table of claim 3, wherein, The positioning structure is arranged between the wheel set connecting piece (55) and the middle layer connecting piece (54), the positioning structure comprises a positioning column (553) and a positioning counterbore (541), the positioning column (553) is arranged at the top end of the wheel set connecting piece (55), the positioning counterbore (541) is arranged at the bottom end of the middle layer connecting piece (54), the middle layer connecting piece (54) is close to the wheel set connecting piece (55), the positioning column (553) partially extends into and abuts against the positioning counterbore (541), and the middle layer connecting piece (54) is positioned and abuts against the wheel set connecting piece (55); The first guide structure is arranged between the middle layer connecting piece (54) and the base (1), the first guide structure comprises a guide column (101) and a guide hole (542), the guide column (101) is fixed on the base (1), the guide hole (542) is arranged on the middle layer connecting piece (54), the middle layer connecting piece (54) is arranged on the outer side wall of the guide column (101) in a sliding manner through the guide hole (542), and the guide column (101) is located on one side of the stand column (2) towards the center of the heating table. The middle layer connecting piece (54) is provided with a transmission part (543) for transmission connection with the first transmission mechanism (53), the transmission part (543) is arranged in the guide hole (542), the side wall of the guide column (101) is provided with an avoiding slot (1011), the avoiding slot (1011) is away from the center of the heating table, the transmission part (543) extends into the guide column (101) through the avoiding slot (1011); The guide column (101) and the guide hole (542) are further provided with a second guide structure, the second guide structure comprises a guide slot (1012) and a guide convex rib (544), the guide slot (1012) is arranged on the side wall of the inner cavity of the guide column (101) and extends along the length direction of the guide column (101), the guide convex rib (544) is arranged on the side wall of the guide hole (542) and extends along the length direction of the middle layer connecting piece (54), the guide slot (1012) and the guide convex rib (544) are slidably connected.

10. The multi-level, wheel group lifting warming table of claim 2, wherein, The panel lifting driving device (6) comprises a second driving motor (61), a second transmission shaft (62) connected with the output end of the second driving motor (61), a second transmission box (63) connected with the output end of the second transmission shaft (62), a second screw rod (64) located in the inner side of the stand column (2) and connected with the output end of the second transmission box (63), and a second lifting rod assembly (66) movably arranged on the second screw rod (64) through a second nut sleeve (65), the second lifting rod assembly (66) is arranged on the bottom surface of the panel (3), the stand column (2) is located outside the second lifting rod assembly (66), and the panel lifting driving device (6) is located outside the middle layer lifting driving device (5).

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