CN214964701U - Barbecue oven with adjustable grate height and angle - Google Patents

Abstract

The utility model discloses a grate height and angle adjustable oven, which comprises an outer shell, the upper portion of shell is provided with two sets of standing grooves. Has the advantages that: the utility model discloses a lift adjustment pole, when the use height of electric heating pipe is adjusted to needs, the screwed pipe of four group of anticlockwise rotation, two sets of adjusting screw of sideslip simultaneously, four group's branches use two sets of first worker type poles respectively as the centre of a circle rotatory, four group's branches receive the food tray perpendicularly gradually, this moment receive the food tray, frame shell and electric heating pipe shift up in step gradually, when electric heating pipe moves the anticipated position, in the same direction as, anticlockwise rotation four group's screwed pipe, make its inside tip in close contact with one side of two sets of spacing orifice plates and two sets of built-in grooves respectively, fastening bolt of four group of clockwise rotation, when the one end of fastening bolt of four group all contacts with the lower part of food tray, electric heating pipe is stabilized fixed, through two sets of lift adjustment poles that set up, can be according to user's demand, adjust electric heating pipe's use height and angle.

Description

Barbecue oven with adjustable grate height and angle

Technical Field

The utility model relates to a oven technical field particularly, relates to a grate height and adjustable angle oven.

Background

The barbecue oven is a barbecue device, can be used for barbecue foods such as mutton shashlik and barbecue, and can be divided into three types, namely a charcoal barbecue oven, a gas oven and an electric oven, wherein the gas oven and the electric oven are popular because of no oil smoke and no pollution to the products, common barbecue ovens on the market are an apple oven, a rectangular oven, a portable oven and the like, while chatting and drinking smoothly, the barbecue is enjoyed while enjoying the fun of barbecue, the bitter taste of going to work at ordinary times is reduced, and a new bright spot is added for urban life, so that the barbecue oven is a product capable of improving the life quality of people, and has the advantages of stable use, high barbecue efficiency, convenience in installation and the like.

However current oven, be fixed mounting structure mostly, it is different with the use custom according to user's height, electric heating pipe's use height also can be different with the angle, electric heating pipe's use height and application angle, can't adjust the use according to user's demand, bring inconvenience for the use of oven, secondly, in the many external air of knob switch of current oven, when the accident touches knob switch, can change the operating condition of oven, the user does not notice when electric heating pipe is the ohmic heating, the condition that touch electric heating pipe can lead to the scald takes place, bring the hidden danger for the safety in utilization of oven.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a grate height and angle adjustable oven possesses can be according to user's demand, adjusts electric heating pipe's use height and angle, prevents that accident from touching the knob switch, changes the operating condition's of oven advantage, and then solves the problem among the above-mentioned background art.

(II) technical scheme

In order to realize the aforesaid can be according to user's demand, adjust electric heating pipe's use height and angle, prevent that the accident from touching knob switch, change the operating condition's of oven advantage, the utility model discloses a concrete technical scheme as follows:

the utility model provides a grate height and angularly adjustable oven, includes the shell, the upper portion of shell is provided with two sets of standing grooves, and is two sets of the equal slidable mounting in inside of standing groove has a lift adjustment pole, and is two sets of the food receiving disc is installed to the one end of lift adjustment pole, the upper portion fixed mounting of food receiving disc has the frame shell, and the inside lateral wall fixed mounting of frame shell has electric heating pipe, two sets of rotary switch and two sets of protection casing are installed to the terminal surface of shell, and are two sets of the protection casing covers two sets of respectively rotary switch.

Furthermore, one end of each of the two groups of lifting adjusting rods is fixedly provided with a first I-shaped rod in a penetrating way, the side walls of the two groups of first I-shaped rods are rotatably sleeved with two groups of supporting rods, one end of each of the four groups of supporting rods is rotatably provided with a second I-shaped rod in a penetrating way, the side walls of the four groups of second I-shaped rods are sleeved with groove plates, one end of each of the two groups of groove plates at the same side is fixedly connected with one side of each of the two groups of placing grooves, the other side of the inside of each of the two groups of placing grooves is provided with a fixing through hole, one end of each of the other two groups of groove plates is fixedly provided with an adjusting screw, one end of each of the two groups of adjusting screws is respectively penetrated through the two groups of fixing through holes, the side walls of each of the two groups of adjusting screws are sleeved with two groups of threaded pipes and limiting orifice plates, the lower parts of the two groups of limiting orifice plates are fixedly provided with supporting plates, one side of the shell is provided with two groups of built-in grooves, two sets of the one end of backup pad respectively with two sets of the inside bottom surface fixed connection in built-in groove, the lower part of oil receiving dish is provided with two sets of ball sockets, and two sets of the equal fixed mounting of the other end of lift adjustment pole has the bulb, and is two sets of the bulb is located two sets of respectively the inside of ball socket, and two sets of the equal fixed cup joint of lateral wall of lift adjustment pole is installed and is overlapped the board, and two sets of the upper portion of overlapping the board all is provided with the screw thread through-hole to two sets of the inside of screw thread through-hole all runs through and installs fastening bolt.

Furthermore, the four groups of threaded through holes are meshed with the four groups of fastening bolts, and the four groups of threaded pipes are meshed with the two groups of adjusting screws.

Furthermore, the vertical cross-sectional size of the inner part of the two groups of limiting pore plates and the vertical cross-sectional size of the two groups of fixing through holes are larger than the vertical cross-sectional size of the two groups of adjusting screws.

Further, it is a set of the terminal surface of protection casing is provided with built-in T type groove, and the internally mounted in built-in T type groove has the pull board to the rear end fixed mounting of pull board has the connecting rod, the one end fixed mounting of connecting rod has the frame board, and the inside both sides of frame board all are provided with two sets of blind holes, four groups the equal fixed mounting of inside tip of blind hole has expanding spring, and four groups the equal fixed mounting of one end of expanding spring has conflict club, and four groups the one end of conflict club respectively with a set of knob switch's both sides in close contact with, the lateral wall of connecting rod cup joints and installs reset spring.

Furthermore, the connecting structures of the two groups of protective covers are the same, and the mounting modes of the protective covers and the shell are also the same.

Furthermore, the two groups of knob switches are respectively electrically connected with the electric heating tube through electric wires.

Furthermore, four groups of support columns are installed on the lower portion of the shell.

(III) advantageous effects

Compared with the prior art, the utility model provides a grate height and adjustable angle oven possesses following beneficial effect:

(1) the utility model adopts the lifting adjusting rod, when the using height of the electric heating pipe needs to be adjusted, four groups of threaded pipes are meshed with two groups of adjusting screw rods, the four groups of threaded pipes are rotated anticlockwise to adjust the using positions of the four groups of threaded pipes, simultaneously, two groups of adjusting screw rods are transversely moved, two groups of groove plates on the same horizontal line move oppositely, four groups of supporting rods rotate respectively by taking two groups of first I-shaped rods as circle centers, four groups of supporting rods are gradually vertical to the oil receiving disc, the frame shell and the electric heating pipe gradually move upwards synchronously, when the electric heating pipe moves to an expected position, the four groups of threaded pipes are rotated clockwise and anticlockwise to be respectively in close contact with one side of two groups of limiting pore plates and the inner end of two groups of built-in grooves, four groups of threaded through holes are meshed with four groups of fastening bolts, the four groups of fastening bolts are rotated clockwise, when one end of the four groups of fastening bolts is in contact with the lower part of the oil receiving disc, receive the food tray, frame shell and electric heating pipe are stabilized fixed, when the use angle of electric heating pipe is adjusted to needs, synchronous above-mentioned operation, make the high difference of shifting up of two sets of lift adjustment poles, electric heating pipe slope this moment, this in-process utilizes two sets of bulbs and two sets of ball sockets, electric heating pipe can not break away from two sets of lift adjustment poles, through two sets of lift adjustment poles that set up, can be according to user's demand, adjust electric heating pipe's use height and angle, bring the facility for the use of grate height and the adjustable angle oven.

(2) The utility model adopts the protective cover, when a group of knob switches are needed to be adjusted and used, a group of pull plates are pulled to be moved out of a group of built-in T-shaped grooves, at the moment, a group of reset springs are in a compressed state, the end parts of four groups of ball bars slide on the two sides of the group of knob switches, but the end parts of the four groups of ball bars always contact with the two sides of the group of knob switches, when the group of pull plates move to an expected position, the group of pull plates are rotated to drive a group of frame plates to do synchronous motion through a group of connecting rods, the four groups of ball bars abut against the group of knob switches to rotate, after the use is finished, the group of pull plates are loosened, the group of reset springs are subjected to self elastic force to drive the group of pull plates, the group of connecting rods and the group of frame plates to recover to the original position, the group of pull plates are built in the inside of built-in T-shaped grooves, when foreign objects touch, the use position of the group of knob switches can not be adjusted, the use of another group of knob switch can with the operation, through the protection casing that sets up, can prevent that the accident from touching two sets of knob switches, changes the operating condition of grate height and the adjustable oven of angle, brings a guarantee for the safe handling of grate height and the adjustable oven of angle.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a barbecue grill with adjustable grate height and angle according to the present invention;

FIG. 2 is a perspective view of the electrolytic hot plate of the present invention;

fig. 3 is a schematic cross-sectional view of the protective cover of the present invention;

FIG. 4 is an enlarged view of A of FIG. 1 according to the present invention;

FIG. 5 is an enlarged view of B of FIG. 1 according to the present invention;

fig. 6 is an enlarged view of C in fig. 1 according to the present invention.

In the figure:

1. a housing; 2. a placement groove; 3. a lifting adjusting rod; 4. an oil collecting disc; 5. a frame shell; 6. an electric heating tube; 7. a knob switch; 8. a protective cover; 9. a first mold bar; 10. a strut; 11. a second mold bar; 12. a groove plate; 13. a fixing through hole; 14. adjusting the screw rod; 15. a threaded pipe; 16. a support plate; 17. limiting the pore plate; 18. a built-in groove; 19. a ball head; 20. a ball socket; 21. sleeving and connecting plates; 22. a threaded through hole; 23. fastening a bolt; 24. a T-shaped groove is arranged inside; 25. a drawing plate; 26. a connecting rod; 27. a frame plate; 28. blind holes; 29. a tension spring; 30. butting against the ball rod; 31. a return spring.

Detailed Description

For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.

According to the embodiment of the utility model, a barbecue oven with adjustable grate height and angle is provided.

Now combine the attached drawing and detailed implementation mode to the utility model discloses explain further, as shown in fig. 1-6, according to the utility model discloses a grate height and angle regulation oven, including shell 1, the upper portion of shell 1 is provided with two sets of standing grooves 2, and the equal slidable mounting in inside of two sets of standing grooves 2 has lift adjusting lever 3, and oil collecting tray 4 is installed to the one end of two sets of lift adjusting lever 3, oil collecting tray 4's upper portion fixed mounting has frame shell 5, and frame shell 5's inside lateral wall fixed mounting has electric heating pipe 6, two sets of rotary switch 7 and two sets of protection casing 8 are installed to shell 1's terminal surface, two sets of protection casings 8 cover two sets of rotary switch 7 respectively, oil collecting tray 4, electric heating pipe 6 and two sets of rotary switch 7 are current structure, do not do too much repeated description here.

In one embodiment, one end of each of two sets of lifting adjusting rods 3 is fixedly provided with a first I-shaped rod 9 in a penetrating way, the side wall of each of two sets of first I-shaped rods 9 is rotatably sleeved with two sets of supporting rods 10, one end of each of four sets of supporting rods 10 is rotatably provided with a second I-shaped rod 11 in a penetrating way, the side wall of each of four sets of second I-shaped rods 11 is sleeved with a groove plate 12, one end of each of two sets of groove plates 12 on the same side is fixedly connected with one side of each of two sets of placing grooves 2, the other side inside each of two sets of placing grooves 2 is provided with a fixing through hole 13, one end of each of the other two sets of groove plates 12 is fixedly provided with an adjusting screw 14, one end of each of two sets of adjusting screws 14 is respectively provided with two sets of fixing through holes 13, the side walls of two sets of adjusting screws 14 are respectively sleeved with two sets of threaded pipes 15 and limiting orifice plates 17, the lower parts of two sets of limiting orifice plates 17 are fixedly provided with a supporting plate 16, one side of the shell 1 is provided with two sets of built-in grooves 18, one end of each of two groups of supporting plates 16 is fixedly connected with the inner bottom surface of each of two groups of built-in grooves 18, the lower part of the oil receiving disc 4 is provided with two groups of ball sockets 20, the other ends of the two groups of lifting adjusting rods 3 are fixedly provided with ball heads 19, the two groups of ball heads 19 are respectively positioned in the two groups of ball sockets 20, the side walls of the two groups of lifting adjusting rods 3 are fixedly sleeved with sleeve connection plates 21, the upper parts of the two groups of sleeve connection plates 21 are provided with threaded through holes 22, fastening bolts 23 are respectively arranged in the two groups of threaded through holes 22 in a penetrating manner, when the using height of the electric heating pipe 6 needs to be adjusted, the four groups of threaded pipes 15 are meshed with the two groups of adjusting screws 14 by utilizing the four groups of threaded pipes 15, the four groups of threaded pipes 15 are rotated anticlockwise, the using positions of the four groups of threaded pipes 15 are adjusted, the two groups of adjusting screws 14 are simultaneously transversely moved, the two groups of groove plates 12 positioned on the same horizontal line are moved in opposite directions, the four groups of supporting rods 10 respectively rotate by taking the two groups of first H-bar centers of circles 9, four groups of supporting rods 10 are gradually vertical to the oil receiving disc 4, at the moment, the oil receiving disc 4, the frame shell 5 and the electric heating pipe 6 gradually move upwards synchronously, when the electric heating pipe 6 moves to a desired position, four groups of threaded pipes 15 are rotated clockwise and anticlockwise to respectively be in close contact with one side of two groups of limiting pore plates 17 and the inner end parts of two groups of built-in grooves 18, four groups of threaded through holes 22 are meshed with four groups of fastening bolts 23, the four groups of fastening bolts 23 are rotated clockwise, when one ends of the four groups of fastening bolts 23 are in contact with the lower part of the oil receiving disc 4, the frame shell 5 and the electric heating pipe 6 are stably fixed, when the using angle of the electric heating pipe 6 needs to be adjusted, the operations are synchronized, the upwards moving heights of the two groups of lifting adjusting rods 3 are different, at the moment, the electric heating pipe 6 inclines, in the process, the two groups of ball heads 19 and the two groups of ball sockets 20 are utilized, the electric heating pipe 6 can not be separated from the two groups of lifting adjusting rods 3, through two sets of lift adjustment pole 3 that set up, can adjust electric heating pipe 6's use height and angle according to user's demand, facilitate for the use of grate height and the adjustable oven of angle.

In one embodiment, the four sets of threaded through holes 22 are engaged with the four sets of fastening bolts 23, and the four sets of threaded pipes 15 are engaged with the two sets of adjusting screws 14, so that the use positions of the four sets of fastening bolts 23 and the two sets of adjusting screws 14 can be adjusted.

In one embodiment, the internal vertical cross-sectional dimensions of the two sets of limiting pore plates 17 and the vertical cross-sectional dimensions of the two sets of fixing through holes 13 are larger than the vertical cross-sectional dimensions of the two sets of adjusting screws 14, so that the situation that the two sets of adjusting screws 14 cannot be pushed to use due to the fact that the internal vertical cross-sectional dimensions of the two sets of limiting pore plates 17 are too large and the vertical cross-sectional dimensions of the two sets of fixing through holes 13 are too large is avoided.

In one embodiment, the end surface of one set of protective cover 8 is provided with a built-in T-shaped groove 24, a drawing plate 25 is arranged inside the built-in T-shaped groove 24, the rear end of the drawing plate 25 is fixedly provided with a connecting rod 26, one end of the connecting rod 26 is fixedly provided with a frame plate 27, two sets of blind holes 28 are arranged on two sides inside the frame plate 27, the inner ends of the four sets of blind holes 28 are fixedly provided with telescopic springs 29, one ends of the four sets of telescopic springs 29 are fixedly provided with collision ball bars 30, one ends of the four sets of collision ball bars 30 are respectively in close contact with two sides of one set of knob switch 7, the side wall of the connecting rod 26 is sleeved with a return spring 31, when one set of knob switch 7 is required to be adjusted and used, one set of drawing plate 25 is pulled to be moved out of the built-in T-shaped groove 24, at the moment, one set of return springs 31 is in a compressed state, the ends of the four sets of collision ball bars 30 slide on two sides of the set of knob switch 7, however, the ends of the four ball bars 30 are always in contact with the two sides of the knob switch 7, when the drawing plate 25 is moved to an expected position, the drawing plate 25 is rotated, the frame plate 27 is driven to move synchronously by the connecting rod 26, the ball bars 30 are rotated against the knob switch 7, after the use is finished, the drawing plate 25 is loosened, the reset spring 31 is subject to the self elastic force to drive the drawing plate 25, the connecting rod 26 and the frame plate 27 to return to the original position, the drawing plate 25 is internally provided with the T-shaped groove 24, when an external object is accidentally touched, the use position of the knob switch 7 cannot be adjusted, the knob switch 7 is operated to obtain the same use, the protection cover 8 is arranged, the two knob switches 7 can be prevented from being accidentally touched, and the working state of the barbecue oven with adjustable fire grate height and angle can be changed, the safe use of the barbecue oven with the adjustable grate height and angle is guaranteed.

In one embodiment, the two protective covers 8 have the same connecting structure and the same mounting manner as the housing 1, so as to avoid the situation that the two protective covers 8 cannot achieve the same effect by the same operation due to the different connecting structures of the two protective covers 8.

In one embodiment, two sets of knob switches 7 are electrically connected to the electric heating tube 6 through wires, respectively, and the two sets of knob switches 7 function to control the operation of the electric heating tube 6.

In one embodiment, four sets of support posts are mounted on the lower portion of the housing 1, and the four sets of support posts function to support the grill for height and angle adjustment.

The working principle is as follows:

when the grate height and angle adjustable barbecue oven connecting circuit is used, the electric heating pipe 6 is controlled to work through the two groups of knob switches 7, when the use height of the electric heating pipe 6 needs to be adjusted, four groups of threaded pipes 15 are meshed with two groups of adjusting screw rods 14, the four groups of threaded pipes 15 are rotated anticlockwise to adjust the use positions of the four groups of threaded pipes 15, the two groups of adjusting screw rods 14 are transversely moved simultaneously, two groups of groove plates 12 on the same horizontal line move oppositely, four groups of support rods 10 respectively rotate by taking the two groups of first I-shaped rods 9 as circle centers, the four groups of support rods 10 are gradually vertical to the oil receiving disc 4, the frame shell 5 and the electric heating pipe 6 gradually move upwards synchronously, when the electric heating pipe 6 moves to an expected position, the four groups of threaded pipes 15 are rotated clockwise and anticlockwise to be respectively in close contact with one side of the two groups of limiting pore plates 17 and the inner end parts of the two groups of inner grooves 18, utilize four group's screw through-hole 22 and four group's fastening bolt 23 intermeshing, clockwise turning four group's fastening bolt 23, when four group's fastening bolt 23 one end all contacted with the lower part of oil receiving dish 4, frame shell 5 and electric heating pipe 6 are stabilized fixed, when the use angle of electric heating pipe 6 needs to be adjusted, synchronous above-mentioned operation, make the high difference of moving up of two sets of lift adjusting rod 3, electric heating pipe 6 slope this moment, utilize two sets of bulbs 19 and two sets of ball sockets 20 in this process, electric heating pipe 6 can not break away from two sets of lift adjusting rod 3, through two sets of lift adjusting rod 3 that set up, can be according to user's demand, adjust electric heating pipe 6's use height and angle, bring the facility for the use of grate height and the adjustable oven of angle, simultaneously, when needs to adjust and use a set of knob switch 7, pull a set of pull board 25, the ball pushing device is moved out of a group of built-in T-shaped grooves 24, at the moment, a group of reset springs 31 is in a compressed state, the end parts of four groups of ball pushing rods 30 slide on two sides of a group of knob switches 7, but the end parts of the four groups of ball pushing rods 30 are always in contact with two sides of the group of knob switches 7, when one group of pull plates 25 moves to an expected position, one group of pull plates 25 are rotated, one group of frame plates 27 are driven to synchronously move through one group of connecting rods 26, the four groups of ball pushing rods 30 push against one group of knob switches 7 to rotate, after the ball pushing rods are used, one group of pull plates 25 are loosened, one group of reset springs 31 are under the action of self elasticity to drive one group of pull plates 25, one group of connecting rods 26 and one group of frame plates 27 to return to the original position, one group of pull plates 25 is built in one group of built-in T-shaped grooves 24, when a foreign object accidentally touches, the use position of one group of knob switches 7 can be adjusted, the other group of knob switches 7 can be used and operated, through the protection casing 8 that sets up, can prevent that the accident from touching two sets of rotary switch 7, change the operating condition of grate height and the adjustable angle oven, bring a guarantee for the safe handling of grate height and the adjustable angle oven.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a grate height and angularly adjustable oven, its characterized in that, includes shell (1), the upper portion of shell (1) is provided with two sets of standing groove (2), and is two sets of there are lift adjustment pole (3) in the equal slidable mounting in inside of standing groove (2), and it is two sets of food receiving tray (4) are installed to the one end of lift adjustment pole (3), the upper portion fixed mounting of food receiving tray (4) has frame shell (5), and the inside lateral wall fixed mounting of frame shell (5) has electric heating pipe (6), two sets of rotary switch (7) and two sets of protection casing (8) are installed to the terminal surface of shell (1), and are two sets of protection casing (8) cover respectively two sets of rotary switch (7).

2. The barbecue oven with the adjustable grate height and angle as claimed in claim 1, characterized in that one end of each of two sets of the lifting adjusting rods (3) is fixedly provided with a first I-shaped rod (9) in a penetrating manner, the side wall of each of two sets of the first I-shaped rods (9) is rotatably provided with two sets of supporting rods (10) in a sleeved manner, one end of each of four sets of the supporting rods (10) is rotatably provided with a second I-shaped rod (11) in a penetrating manner, the side wall of each of four sets of the second I-shaped rods (11) is rotatably provided with a groove plate (12) in a sleeved manner, one end of each of two sets of the groove plates (12) on the same side is fixedly connected with one side of each of two sets of the placing grooves (2), the other side of the inside of each of two sets of the placing grooves (2) is provided with a fixing through hole (13), one end of each of the other two sets of the groove plates (12) is fixedly provided with an adjusting screw (14), and one end of each of the adjusting screw (14) is respectively provided with two sets of the fixing through holes (13), two groups of threaded pipes (15) and limiting pore plates (17) are sleeved on the side walls of the two groups of adjusting screws (14), supporting plates (16) are fixedly arranged at the lower parts of the two groups of limiting pore plates (17), one side of the shell (1) is provided with two groups of built-in grooves (18), one ends of the two groups of supporting plates (16) are respectively fixedly connected with the inner bottom surfaces of the two groups of built-in grooves (18), two groups of ball sockets (20) are arranged at the lower part of the oil receiving disc (4), the other ends of the two groups of lifting adjusting rods (3) are fixedly provided with ball heads (19), the two groups of ball heads (19) are respectively positioned inside the two groups of ball sockets (20), the side walls of the two groups of lifting adjusting rods (3) are fixedly sleeved with sleeve plates (21), and the upper parts of the two groups of sleeving and connecting plates (21) are provided with threaded through holes (22), and fastening bolts (23) are arranged inside the two groups of threaded through holes (22) in a penetrating way.

3. The barbecue grill with adjustable grate height and angle according to claim 2, characterized in that four sets of said threaded through holes (22) are engaged with four sets of said fastening bolts (23), and four sets of said threaded pipes (15) are engaged with two sets of said adjusting screws (14).

4. The barbecue grill with adjustable grate height and angle according to claim 2, characterized in that the internal vertical cross-sectional dimensions of two sets of limiting orifice plates (17) and the vertical cross-sectional dimensions of two sets of fixing through holes (13) are larger than the vertical cross-sectional dimensions of two sets of adjusting screws (14).

5. The barbecue grill with adjustable grate height and angle according to claim 1, characterized in that the end face of one group of protective covers (8) is provided with a built-in T-shaped groove (24), and a drawing plate (25) is arranged inside the built-in T-shaped groove (24), a connecting rod (26) is fixedly arranged at the rear end of the drawing plate (25), a frame plate (27) is fixedly arranged at one end of the connecting rod (26), two groups of blind holes (28) are arranged on both sides of the interior of the frame plate (27), telescopic springs (29) are fixedly arranged at the inner end parts of the four groups of blind holes (28), one end of each of the four groups of extension springs (29) is fixedly provided with a ball-propping rod (30), one end of each of the four groups of the interference ball rods (30) is respectively in close contact with the two sides of one group of the knob switches (7), and a return spring (31) is sleeved on the side wall of the connecting rod (26).

6. 2-barbecue grill with adjustable grate height and angle according to claim 1, characterized in that the connection structure of the two sets of hoods (8) is the same and the installation way with the housing (1) is the same.

7. The barbecue grill with adjustable grate height and angle according to claim 1, characterized in that two sets of knob switches (7) are electrically connected with the electric heating tube (6) through wires respectively.

8. A grill with adjustable grate height and angle according to claim 1 characterized by that four sets of support columns are installed on the lower part of the housing (1).

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