CN218500525U

CN218500525U - Heating box

Info

Publication number: CN218500525U
Application number: CN202221612232.9U
Authority: CN
Inventors: 韩·威廉·子·伟
Original assignee: Guangzhou Baima Liangshan Technology Co ltd
Current assignee: Guangzhou Baima Liangshan Technology Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2023-02-21
Anticipated expiration: 2032-06-27

Abstract

The patent discloses a heating cabinet, including box, heating tank digs and locates among the box, still includes the support frame, the support frame includes shell, centre gripping subassembly, drive assembly, and the one end at the shell is connected to the centre gripping subassembly, and drive assembly connects at the other end of shell, and drive assembly connects on the shell, and the centre gripping subassembly is arranged in centre gripping target article and arranges target article in heating tank, and drive assembly passes through drive assembly and centre gripping subassembly mechanical connection, and drive assembly is arranged in transmitting the produced mechanical force of drive assembly to the centre gripping subassembly for drive assembly can drive centre gripping subassembly centre gripping target article rotatory. The user can rotate the wrapping bag that is equipped with prefabricated finished product dish through the support frame and make it be heated evenly, reduces the scald risk.

Description

Heating box

Technical Field

The utility model relates to a food processing technology field specifically is a heating cabinet.

Background

In the age with fast pace of life, the prefabricated finished dishes are accepted and accepted by most people. The cooked dishes are preserved in the packaging bags by the fresh-keeping and freezing technology in factories and distributed to various regions. People need to be integrally placed in a heating box for heating after receiving a packaging bag filled with a prefabricated finished dish, and the prefabricated finished dish is poured out of the packaging bag after being heated so as to be eaten, so that a convenient dining mode is provided for enjoying the delicacies in busy life.

At present, water heating, steam heating, baking heating, microwave heating and the like are common in a heating box, but no matter which heating mode is adopted, a packaging bag containing a prefabricated finished product dish is generally placed in a heating groove of the heating box, the prefabricated finished product dish is heated close to the outer part of the packaging bag, the interior of the packaging bag is still in a frozen state, and the heating is uneven. In addition, as the prior art has granted the publication number CN210354328U, a dual-rack rotary cooker and cooking device, which comprises a rack assembly, a rotating shaft, a driving assembly, a heating pot body and a heating assembly, it also lacks the ability to take out food from the heating pot body, and is inconvenient to use.

The packaging bag containing the prefabricated finished dish generates heat seriously on the whole, a user can take the packaging bag containing the prefabricated finished dish out of the heating groove by using an additional tool, and the risk of being scalded exists without using the tool.

SUMMERY OF THE UTILITY MODEL

This patent provides a heating cabinet, user can rotate the wrapping bag that is equipped with prefabricated finished product cooked food through the support frame and make it be heated evenly, reduces the scald risk, is realized through following technical scheme:

the utility model provides a heating cabinet, includes box, heating tank, the heating tank is dug and is located among the box, still includes the support frame, the support frame includes shell, centre gripping subassembly, drive assembly, and the one end at the shell is connected to the centre gripping subassembly, and drive assembly connects at the other end of shell, and drive assembly connects on the shell, and the centre gripping subassembly is arranged in centre gripping target article and arranges target article in the heating tank, and drive assembly passes through drive assembly and centre gripping subassembly mechanical connection, and drive assembly is arranged in transmitting the produced mechanical force of drive assembly to the centre gripping subassembly for drive assembly can drive centre gripping subassembly centre gripping target article rotatory.

Further, drive assembly includes handle, actuating lever, first spring, telescopic link, telescope tube, the handle is connected the other end of shell, the one end of actuating lever articulates on the handle, and the both ends of first spring are connected respectively at the middle part of actuating lever and handle middle part, and telescopic link and telescope tube sliding fit connect, and the one end that the telescopic link was kept away from to the telescope tube is connected with the one end that the actuating lever is close to the handle, and the one end and the drive assembly mechanical connection that the telescope tube was kept away from to the telescopic link are in order to provide the mechanical force to drive assembly and centre gripping subassembly.

Furthermore, the transmission assembly comprises a first gear, a second gear and a third gear, wherein gear shafts of the first gear, the second gear and the third gear are rotatably connected to the shell, the first gear is connected to one end, close to the driving assembly, of the shell, the second gear is connected to the middle of the shell, the third gear is connected to one end, close to the clamping assembly, of the shell, the first gear is mechanically connected with the driving assembly, the third gear is mechanically connected with the clamping assembly, and the first gear, the second gear and the third gear are in transmission connection.

Furthermore, the clamping assembly comprises a first rotating shaft and a second rotating shaft, a first supporting portion and a second supporting portion are extended from one end of the shell close to the clamping assembly in a branched mode, the first rotating shaft is rotatably connected with the first supporting portion, the second rotating shaft is rotatably connected with the second supporting portion, the first rotating shaft and the second rotating shaft are coaxially arranged, one ends of the first rotating shaft and the second rotating shaft, which are opposite to each other, can clamp a target object together, the first rotating shaft is mechanically connected with the driving assembly through a transmission assembly, and the driving assembly can drive the first rotating shaft to rotate.

Furthermore, the clamping assembly further comprises a first clamping plate and a second clamping plate, the first clamping plate is connected to one end, close to the second rotating shaft, of the first rotating shaft, and the second clamping plate is connected to one end, close to the first rotating shaft, of the second rotating shaft.

Further, the centre gripping subassembly still includes oppression piece and second spring, oppress the piece including oppression cap and oppression pole, the one end fixed connection of oppression pole is on oppressing the cap, the other end butt of oppression pole is kept away from the one end of first rotation axis at the second rotation axis, the second spring is installed around the oppression pole, the one end of second spring is connected on the second supporting part, the other end of second spring is connected on one side that the oppression cap is close to the second supporting part, the second spring is used for producing the oppression power with oppression cap to second rotation axis direction, thereby the oppression cap forces the one end of oppression pole to promote the first rotation axis direction of second rotation axis and is close to.

Furthermore, the supporting frame further comprises a lifting assembly, the lifting assembly is fixedly connected with the shell and movably connected with the case, and the lifting assembly can move in the vertical direction relative to the case, so that the shell, the clamping assembly, the transmission assembly and the driving assembly can also move in the vertical direction.

Further, the mounting groove is inwards seted up to the box, lifting unit includes ratch, pawl, torsional spring, and the upper end fixed connection of ratch connects drive assembly one end at the shell, and the lower extreme of ratch inserts to the mounting groove in, and one side of ratch has one row of continuous ratchet, the pawl articulates at the mounting groove inboard, and on the torsional spring installation pawl, the torsional spring is used for making the one end of pawl can kick-back to the ratchet to the pawl can block the ratchet and restrict the ratch whereabouts.

Furthermore, the ratchet bar support device further comprises a button, one end of the button penetrates through the outer side wall of the case, the other end of the button is connected to the pawl in an abutting mode, and the button is used for driving the pawl to rotate so as to release support of the pawl on the ratchet bar.

Furthermore, the depth of the mounting groove is equivalent to the height of the ratchet strip plus the driving assembly and part of the shell, and the width of the mounting groove is equivalent to the width of the ratchet strip plus the driving assembly and the shell.

The design has the following advantages:

1. through the cooperation of drive assembly, transmission assembly, centre gripping subassembly, to the wrapping bag that is equipped with prefabricated finished product cooked food for prefabricated finished product cooked food removes in the wrapping bag, is heated evenly.

2. The clamping assembly reduces the risk that a user lifts a packaging bag containing a prefabricated finished dish from the heating groove to be scalded.

3. The support frame can be accomodate among the box, and integration heating cabinet structure need not to occupy other spaces.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view of the position of FIG. 2A (with the support bracket pulled out of the housing);

FIG. 4 is a cross-sectional view of the position of FIG. 2A (with the support frame in the housing);

FIG. 5 is an enlarged view of the location of FIG. 3B;

FIG. 6 is a schematic perspective view of the support frame;

fig. 7 is a left side view of the support stand.

In the figure, 1, a box body; 2. a box cover; 3. a heating tank; 4. a support frame; 41. a housing; 411. a first protective plate; 412. a second protective plate; 413. a third protective plate; 42. a drive assembly; 421. a grip; 422. A drive rod; 423. a first spring; 424. a telescopic rod; 425. a telescopic sleeve; 426. a first hinge point; 427. A second hinge point; 43. a transmission assembly; 431. a first gear; 432. a second gear; 433. a third gear; 44. a clamping assembly; 441. a first rotating shaft; 442. a second rotation shaft; 443. a first splint; 444. A second splint; 445. a pressing member; 446. a second spring; 45. a lifting assembly; 451. a ratchet bar; 452. A pawl; 453. a button; 454. a torsion spring; 455. a ratchet; 456. a protrusion; 6. and (4) mounting the groove.

Detailed Description

The invention will be further described with reference to the following drawings and detailed description:

as shown in fig. 1 to 7, a heating box includes a box body 1, a box cover 2, a heating groove 3, a heating device, a support frame 4 and a mounting groove 6.

The box body 1 is of a cubic structure, the heating groove 3 is dug inwards in the box body 1 from the upper end surface of the box body 1, the heating device (not shown) is arranged in an annular space between the heating groove 3 and the box body 1 in a built-in mode, and the heating device can heat the heating groove 3, so that a packaging bag placed in the heating groove 3 and filled with a prepared dish can be heated. In the prior art, water is often filled in the heating tank 3, and the heating device heats the water in the heating tank 3, so that the packaging bag filled with the dish to be prepared in the heating tank 3 can be heated. The packaging bag filled with the dish of the pre-manufactured product is a target object applied to the utility model.

The heating grooves 3 can be arranged in a plurality under the condition that the volume of the box body 1 is enough, and a plurality of different packaging bags filled with pre-manufactured dishes can be heated simultaneously.

The edge at 1 up end of box is connected through the articulated mode in one side of case lid 2, case lid 2 is used for the lid to close on heating bath 3 and mounting groove 6, and when not using the heating bath, case lid 2 can prevent that materials such as dust from entering into heating bath 3 and mounting groove 6.

The support frame 4 comprises a housing 41, a driving assembly 42, a transmission assembly 43, a clamping assembly 44 and a lifting assembly 45. The shell 41 is an elongated hollow structure, the shell 41 is bent by ninety degrees once, and the driving assembly 42, the transmission assembly 43, the clamping assembly 44 and the lifting assembly 45 are all mounted on the shell 41.

The clamping assembly 44 is used for clamping a packaging bag filled with a prefabricated finished dish, the clamping assembly 44 is mechanically connected with the driving assembly 42 through the transmission assembly 43, the transmission rotating piece is used for transmitting mechanical force of the driving assembly 42 to the clamping assembly 44, the driving assembly 42 drives the clamping assembly 44 to rotate the packaging bag filled with the prefabricated finished dish through the transmission assembly 43, the prefabricated finished dish in the packaging bag can rotate and move in the packaging bag, and when the clamping assembly 44 extends into the heating groove 3, the packaging bag can rotate to enable the prefabricated finished dish to be uniformly heated.

As shown in fig. 5, the driving assembly 42 includes a handle 421, a driving rod 422, a first spring 423, a telescopic rod 424, and a telescopic sleeve 425. One end of the handle 421 is fixedly connected to one end of the housing 41, one end of the driving rod 422 is hinged to one end of the handle 421 fixedly connected to the housing 41, the hinge point is a first hinge point 426, specifically, one end of the driving rod 422 is provided with a ferrule, the ferrule can be sleeved on a shaft fixedly connected to the handle 421, the driving rod 422 can rotate on a vertical plane by taking the hinge point as a circle center, the middle part of the driving rod 422 and the middle part of the handle 421 are connected through a first spring 423, one end of the driving rod 422 close to the housing 41 is further fixedly connected with a telescopic sleeve 425, the telescopic sleeve 425 is sleeved on the telescopic rod 424, the telescopic sleeve 425 and the telescopic rod 424 are in sliding fit, one end of the telescopic rod 424, far away from the telescopic sleeve 425, is hinged to a position of the side non-axial center of the first gear 431 of the transmission assembly 43, and a second hinge point 427 is formed.

The telescopic rod 424 and the telescopic sleeve 425 can be connected by adopting a mechanical structure such as a hydraulic structure, a pneumatic structure or a spring structure in the prior art, so that the relative positions of the telescopic rod 424 and the telescopic sleeve 425 can be changed, the distance between the first hinge point 426 and the second hinge point 427 can also be changed, a specific distance can be set by adopting a mechanical structure such as a hydraulic structure, a pneumatic structure or a spring structure in the prior art, and when the distance between the first hinge point 426 and the second hinge point 427 is larger than the specific distance, a contraction force can be generated between the telescopic rod 424 and the telescopic sleeve 425; when the distance between the first hinge point 426 and the second hinge point 427 is less than a certain distance, there can be an extension force between the extension rod 424 and the extension sleeve 425. When a user holds the grip 421, the first hinge point 426 is located at an initial position, the driving rod 422 is pulled by a finger, the driving rod 422 is close to the grip 421, the driving rod 422 rotates around the first hinge point 426, the driving rod 422 drives the telescopic rod 424 and the telescopic sleeve 425 to swing, the telescopic rod 424 extends relative to the telescopic sleeve 425, the first gear 431 is driven to rotate through the first hinge point 426, the first hinge point 426 follows the first gear 431 to rotate to a position which is farthest away from the second hinge point 427, the telescopic rod 424 contracts relative to the telescopic sleeve 425, the telescopic rod 424 pulls the first gear 431 to rotate continuously, the driving rod 422 is loosened by the finger along with the rotation inertia of the first gear 431 and the contraction of the telescopic rod 424 relative to the telescopic sleeve 425, the first spring 423 rebounds the driving rod 422, and the first hinge point 426 returns to the initial position. If the driving rod 422 continues to swing, the first gear 431 may be continuously driven to rotate. The structure has low manufacturing cost and simple structure, and can be used by a user with one hand.

The transmission assembly 43 includes a first gear 431, a second gear 432, and a third gear 433, the first gear 431, the second gear 432, and the third gear 433 are all disposed in the housing 41, two ends of a gear shaft of each of the first gear 431, the second gear 432, and the third gear 433 are rotatably connected to the inside of the housing 41, the first gear 431 is connected to a position of one end of the housing 41 close to the handle 421, the second gear 432 is connected to the inside of a bent portion of the housing 41, and the third gear 433 is connected to a position of one end of the housing 41 far from the handle 421. The first gear 431 is in transmission connection with the second gear 432, the second gear 432 is in transmission connection with the third gear 433, the first gear 431 can drive the second gear 432 to rotate by rotating, the second gear 432 can drive the third gear 433 to rotate by rotating, and thus the transmission assembly 43 transmits and converts the mechanical force of the driving assembly 42 to the rotating force of the third gear 433.

The transmission assembly 43 may be replaced by other mechanical transmission structures, such as a lever, a cam, etc.

As shown in fig. 6 and 7, the end of the housing 41 away from the grip 421 branches into a first supporting portion and a second supporting portion. The clamping assembly 44 includes a first rotating shaft 441, a second rotating shaft 442, a first clamping plate 443, a second clamping plate 444, a pressing member 445, and a second spring 446. The first rotating shaft 441 is rotatably mounted on the first supporting portion, the first rotating shaft 441 is fixedly connected with the third gear 433, when the third gear 433 rotates, the first rotating shaft 441 also rotates along with the third gear 433, one end of the first rotating shaft 441 is fixedly connected with the first clamping plate 443, and the first clamping plate 443 is used for increasing the contact area of the packaging bag filled with the prefabricated finished product dish and increasing the capacity of clamping the packaging bag filled with the prefabricated finished product dish.

The shell 41 handle 421 and the shell 41 handle 421 have the second rotating shaft 442 connected to the second supporting portion of the shell 41 handle 421 in a rotatable manner, the first rotating shaft 441 and the second rotating shaft 442 are coaxially arranged, the second rotating shaft 442 is fixedly connected to the second clamping plate 444 at one end close to the first rotating shaft 441, the first clamping plate 443 and the second clamping plate 444 are oppositely arranged, the first clamping plate 443 and the second clamping plate 444 can increase the contact area between the first rotating shaft 441 and the second rotating shaft 442 and a packaging bag containing a prefabricated finished dish, and the first clamping plate 443 and the second clamping plate 444 are commonly used for clamping the packaging bag containing the prefabricated finished dish.

The pressing member 445 is connected to the second supporting portion of the handle 421 of the housing 41, the pressing member 445 includes a pressing cap and a pressing rod, one end of the pressing rod is fixedly connected to the pressing cap, the other end of the pressing rod abuts against one end of the second rotating shaft 442 far away from the first rotating shaft 441 and the second clamping plate 444, the second spring 446 is installed around the pressing rod, one end of the second spring 446 is connected to the other end of the housing 41 far away from the handle 421, the other end of the second spring 446 is connected to one side of the pressing cap close to the second rotating shaft 442, the second spring 446 is used for generating pressing force to the pressing cap towards the second rotating shaft 442, so that the pressing cap forces one end of the pressing rod to push the second rotating shaft 442 and the second clamping plate 444 to approach towards the first clamping plate 443, so that clamping force is generated between the first clamping plate 443 and the second clamping plate 444, and the first clamping plate 443 and the second clamping plate 444 can press the packaging bag containing the dish prepared to realize the clamping function. The user can also remove the packaging bag containing the prefabricated dish by removing the clamping force between the first clamping plate 443 and the second clamping plate 444 through pulling out the pressing cap. Preferably, an end of the second rotating shaft 442 near the pressing member 445 can extend out of a step that can be caught on the second supporting portion, so that the second rotating shaft 442 is not pushed away from the second supporting portion by the pressing member 445.

The first supporting portion and the second supporting portion of the handle 421 of the housing 41 can further respectively extend a first protection plate 411 and a second protection plate 412 in a vertical direction, the upper edges of the first protection plate 411 and the second protection plate 412 are horizontally connected to extend a third protection plate 413, and the first protection plate 411, the second protection plate 412 and the third protection plate 413 are used for preventing hot water from bouncing to a user when the clamping assembly 44 rotates a packaging bag filled with a prepared dish.

As shown in fig. 3 and 4, the lifting assembly 45 includes a ratchet bar 451, a pawl 452, a button 453 and a torsion spring 454. The upper end of the ratchet strip 451 is fixedly connected to one end of the shell 41 connected to the handle 421, the upper end surface of the box body 1 is provided with an installation groove 6 inwards, and one end of the ratchet strip 451 far away from the handle 421 is inserted into the installation groove 6. The depth of the mounting groove 6 is equivalent to the height of the ratchet strip 451 and the handle 421, the width of the mounting groove 6 is equivalent to the width of the ratchet strip 451 and the handle 421, the handle 421 and the lifting assembly 45 can be received in the mounting groove 6 to realize the integral integration of the heating box, one end of the button 453 passes through the outer wall of the box body 1 to enter the mounting groove 6 and is movably mounted on the box body 1, one side of the ratchet strip 451 close to the button 453 is provided with a row of continuous ratchet teeth 455, the pawl 452 is hinged on the inner wall of the mounting groove 6, the pawl 452 can rotate clockwise for a certain angle at the initial position, a torsion spring 454 is arranged at the hinged position, one end of the torsion spring 454 is connected with the pawl 452, the other end of the torsion spring 454 is connected with a hinged fixed shaft, so that one end of the pawl 452 far away from the torsion spring 454 can rebound towards the 455 direction after the pawl 452 rotates clockwise for a certain angle, thereby blocking the ratchet teeth 455, and a projection 456 extends from the other end of the pawl 452, and the projection 456 abuts against the button 453.

The lifting assembly 45 is used for allowing the holding assembly 44 to take out the packing bag containing the dish to be cooked from the heating tank 3 when the user pulls the ratchet bar 451 by the grip 421, and the pawl 452 can rotate clockwise by a certain angle without restricting the upward movement of the ratchet 455. When the user releases the grip 421, the pawl 452 rebounds due to the elastic force of the torsion spring 454, and the pawl 452 catches the ratchet 455 to fix the ratchet strip 451, so as to limit the descent of the ratchet strip 451. When button 453 is pressed, button 453 pushes protrusion 456 to rotate pawl 452 clockwise to disengage from ratchet 455, and support frame 4 is lowered by gravity.

The lifting assembly 45 may be omitted and the user may lift the entire support frame 4 directly.

The utility model discloses a use method does:

1. when the box cover 2 is opened, the user pulls up the ratchet bar 451 by pulling up the grip 421, the pawl 452 rotates clockwise without blocking the ratchet 455 from moving upward, the user releases the grip 421, the pawl 452 supports the ratchet 455 by the rotation of the torsion spring 454, and the position of the ratchet bar 451 is fixed, so that the support frame 4 is integrally fixed on the upper end surface of the box body 1.

2. The user pulls the pressing member 445 open, the user places the packing bag containing the prepared dish between the first clamping plate 443 and the second clamping plate 444, releases the pressing cap, and the pressing bar pushes the second rotating shaft 442 and the second clamping plate 444 to approach the first clamping plate 443 due to the second spring 446, thereby clamping the packing bag containing the prepared dish.

3. When the button 453 is pressed, the button 453 pushes the protrusion 456 to rotate the pawl 452 clockwise to disengage the ratchet 455, the support of the ratchet 451 by the ratchet 455 is released, the support frame 4 is lowered by gravity as a whole, and the first clamping plate 443 and the second clamping plate 444 extend the packing bag containing the prepared dish into the heating tub 3 to heat the prepared dish as a whole.

4. The handle 421 is held by hand, the driving rod 422 is broken by fingers, the driving rod 422 drives the first gear 431 to rotate, the first gear 431 drives the second gear 432 to rotate, the second gear 432 drives the third gear 433 to rotate, the third gear 433 drives the first rotating shaft 441 to rotate, the packaging bag filled with the pre-manufactured dish is clamped by the first clamping plate 443 and the second clamping plate 444, the second rotating shaft 442 also rotates along with the first rotating shaft 441, so that the packaging bag filled with the pre-manufactured dish is manually driven to rotate, and the pre-manufactured dish in the packaging bag can move in the packaging bag in the rotating process, so that the pre-manufactured dish can contact with the outer surface of the packaging bag to be heated, and finally can be uniformly heated.

5. After heating for a period of time, the handle 421 is pulled up to lift the ratchet 451, the user releases the handle 421, the pawl 452 supports the ratchet 455 to fix the position of the ratchet 451, so that the support frame 4 is lifted to the upper end surface of the box body 1, and the clamping assembly 44 also lifts the packaging bag containing the dish of the pre-manufactured product out of the heating tank 3, thereby reducing the risk of scalding caused by the direct contact of the user with the packaging bag by hand, and the packaging bag containing the dish of the pre-manufactured product can be clamped for a period of time by the clamping device, so that the surface temperature of the packaging bag containing the dish of the pre-manufactured product is reduced and then the packaging bag is subjected to the next operation. The pressing cap and the pressing rod are pulled outwards, the pressing of the second clamping plate 444 to the first clamping plate 443 is reduced, the packaging bag filled with the prefabricated cooked food is taken down, and the prefabricated cooked food can be poured out for eating.

To sum up, the utility model discloses a heating cabinet, including box 1, case lid 2, heating tank 3, heating device, support frame 4, wherein support frame 4 can the centre gripping be equipped with the wrapping bag of prefabricated finished product cooked food and rotate it in heating tank 3, make prefabricated finished product cooked food wherein be heated evenly, also can reduce the wrapping bag that is equipped with prefabricated finished product cooked food after the staff direct contact heating and scald.

The detailed description is to be construed as exemplary only and does not limit the scope of the claims, which in turn is intended to include all equivalent embodiments or modifications within the scope of the claims.

Claims

1. The utility model provides a heating cabinet, includes box (1), heating tank (3) set up in box (1), heating tank (3) are used for holding the target article, its characterized in that: the heating device is characterized by further comprising a supporting frame (4), the supporting frame (4) comprises a shell (41), a clamping assembly (44), a transmission assembly (43) and a driving assembly (42), the clamping assembly (44) is connected to one end of the shell (41), the driving assembly (42) is connected to the other end of the shell (41), the transmission assembly (43) is connected to the shell (41), the clamping assembly (44) is used for clamping a target object and placing the target object in the heating groove (3), the driving assembly (42) is mechanically connected with the clamping assembly (44) through the transmission assembly (43), and the transmission assembly (43) is used for transmitting mechanical force generated by the driving assembly (42) to the clamping assembly (44) so that the driving assembly (42) can drive the clamping assembly (44) to clamp the target object to rotate.

2. A heating cabinet according to claim 1, wherein: the driving assembly (42) comprises a handle (421), a driving rod (422), a first spring (423), an expansion rod (424) and an expansion sleeve (425), the handle (421) is connected to the other end of the shell (41), one end of the driving rod (422) is hinged to the handle (421), the middle of the driving rod (422) and the middle of the handle (421) are respectively connected with two ends of the first spring (423), the expansion rod (424) is connected with the expansion sleeve (425) in a sliding fit mode, one end, far away from the expansion rod (424), of the expansion sleeve (425) is connected with one end, close to the handle (421), of the driving rod (422), of the expansion sleeve (425), and one end, far away from the expansion sleeve (425), of the expansion rod (424) is mechanically connected with a transmission assembly (43) so as to provide mechanical force for the transmission assembly (43) and a clamping assembly (44).

3. A heating cabinet according to claim 1, wherein: the transmission assembly (43) comprises a first gear (431), a second gear (432) and a third gear (433), the respective gear shafts of the first gear (431), the second gear (432) and the third gear (433) are rotatably connected to the shell (41), the first gear (431) is connected to one end, close to the driving assembly (42), of the shell (41), the second gear (432) is connected to the middle of the shell (41), the third gear (433) is connected to one end, close to the clamping assembly (44), of the shell (41), the first gear (431) is mechanically connected with the driving assembly (42), the third gear (433) is mechanically connected with the clamping assembly (44), and the first gear (431), the second gear (432) and the third gear (433) are in transmission connection.

4. A heating cabinet according to claim 1, wherein: the clamping assembly (44) comprises a first rotating shaft (441) and a second rotating shaft (442), one end of the shell (41) close to the clamping assembly (44) is branched to extend out of the first supporting portion and the second supporting portion, the first rotating shaft (441) is rotatably connected with the first supporting portion, the second rotating shaft (442) is rotatably connected with the second supporting portion, the first rotating shaft (441) and the second rotating shaft (442) are coaxially arranged, one ends of the first rotating shaft and the second rotating shaft (442) opposite to each other can clamp a target object together, the first rotating shaft (441) is mechanically connected with the driving assembly (42) through the transmission assembly (43), and the driving assembly (42) can drive the first rotating shaft (441) to rotate.

5. A heating cabinet according to claim 4, characterized in that: the clamping assembly (44) further comprises a first clamping plate (443) and a second clamping plate (444), the first clamping plate (443) is connected to one end of the first rotating shaft (441) close to the second rotating shaft (442), and the second clamping plate (444) is connected to one end of the second rotating shaft (442) close to the first rotating shaft (441).

6. A heating cabinet according to claim 4, characterized in that: the clamping assembly (44) further comprises a pressing piece (445) and a second spring (446), the pressing piece (445) comprises a pressing cap and a pressing rod, one end of the pressing rod is fixedly connected to the pressing cap, the other end of the pressing rod abuts against one end, far away from the first rotating shaft (441), of the second rotating shaft (442), the second spring (446) is installed around the pressing rod, one end of the second spring (446) is connected to the second supporting portion, the other end of the second spring (446) is connected to one side, close to the second supporting portion, of the pressing cap, the second spring (446) is used for enabling the pressing cap to generate pressing force towards the second rotating shaft (442), and therefore one end of the pressing rod is forced by the pressing cap to push the second rotating shaft (442) to be close to the first rotating shaft (441).

7. A heating cabinet according to claim 1, wherein: the supporting frame (4) further comprises a lifting assembly (45), the lifting assembly (45) is fixedly connected with the shell (41), the lifting assembly (45) is movably connected with the case, and the lifting assembly (45) can move in the vertical direction relative to the case, so that the shell (41), the clamping assembly (44), the transmission assembly (43) and the driving assembly (42) can also move in the vertical direction.

8. A heating cabinet according to claim 7, wherein: the box body (1) is inwards provided with a mounting groove (6), the lifting assembly (45) comprises a ratchet strip (451), a pawl (452) and a torsion spring (454), the upper end of the ratchet strip (451) is fixedly connected to one end of the shell (41) connected with the driving assembly (42), the lower end of the ratchet strip (451) is inserted into the mounting groove (6), one side of the ratchet strip (451) is provided with a row of continuous ratchets (455), the pawl (452) is hinged to the inner side of the mounting groove (6), the torsion spring (454) is mounted on the pawl (452), the torsion spring (454) is used for enabling one end of the pawl (452) to rebound to the ratchets (455), and therefore the pawl (452) can block the ratchets (455) to limit the ratchet strip (451) to fall.

9. A heating cabinet according to claim 8, wherein: the ratchet rack further comprises a button (453), one end of the button (453) penetrates through the outer side wall of the cabinet, the other end of the button (453) abuts against the pawl (452), and the button (453) is used for driving the pawl (452) to rotate so as to release the support of the pawl (452) on the ratchet strip (451).

10. A heating cabinet according to claim 8, wherein: the depth of the mounting groove (6) is equivalent to the height of the ratchet strip (451), the driving assembly (42) and a part of the shell (41), and the width of the mounting groove (6) is equivalent to the width of the ratchet strip (451), the driving assembly (42) and the shell (41).