A self-locking device for barbecue skewers and a barbecue box

Abstract

The present invention discloses a barbecue skewer self-locking device, comprising a driven gear, an elastic member and a limit block, wherein a placement hole is formed on the side wall of a skewer insertion hole of the driven gear, one end of the elastic member is connected to the inner wall of the placement hole, and the other end of the elastic member is connected to the limit block, the limit block is located in the skewer insertion hole, and the limit block can be telescoped into the placement hole; when the barbecue skewer is inserted from the front side of the skewer insertion hole, the limit block can be pressed against and moved into the placement hole; by using the device, barbecue skewers of various shapes can be fixed on a barbecue box to realize rotating barbecue, which is convenient to use and reduces user costs.

Description

Technical Field

[0001] The invention relates to the technical field of barbecue devices, and in particular to a barbecue skewer self-locking device and a barbecue box. Background Art

[0002] With the improvement of living standards, more and more people eat barbecue. Generally, people go to restaurants to eat barbecue. The cost of eating barbecue in restaurants is relatively high. The market for home barbecue ovens is very broad. Currently, home barbecue ovens generally use round special barbecue skewers. The special barbecue skewers are matched with the barbecue oven and installed on the barbecue oven to achieve rotating barbecue. However, the cost of using special barbecue skewers is high, and the number of barbecue skewers equipped in general barbecue ovens is limited. It is inconvenient to use because people need to put food on the grill after eating. Summary of the invention

[0003] In view of the defects in the prior art, the present invention provides a self-locking device for barbecue skewers and a barbecue box. By using the device, barbecue skewers of various shapes can be fixed on the barbecue box to achieve rotating barbecue, which is easy to use and reduces user costs.

[0004] A barbecue skewer self-locking device comprises a driven gear, an elastic member and a limit block, wherein a placement hole is formed on the side wall of a skewer insertion hole of the driven gear, one end of the elastic member is connected to the inner wall of the placement hole, and the other end of the elastic member is connected to the limit block, the limit block is located in the skewer insertion hole, and the limit block can be extended into the placement hole; when a barbecue skewer is inserted from the front side of the skewer insertion hole, the limit block can be pressed against and moved into the placement hole.

[0005] In order to solve the above problems, the inventor has designed the present technical scheme, in which a placement hole is opened on the side wall of the skewer insertion hole of the driven gear, one end of the elastic member is connected to the inner wall of the placement hole, and the other end of the elastic member is connected to the limit block, the limit block is located in the skewer insertion hole, and the limit block can be telescoped into the placement hole; the barbecue skewer is inserted from the front side of the skewer insertion hole, at this time the barbecue skewer contacts the limit block, the barbecue skewer pushes the limit block to move into the placement hole, the limit block moves into the placement hole to compress the elastic member, so that the elastic member has an elastic restoring force, when the barbecue skewer passes through the limit block, the barbecue skewer is fixed by the elastic restoring force of the elastic member, the present device can clamp barbecue skewers of various shapes, whether it is a steel skewer, a bamboo skewer, a round skewer, a flat skewer, or a square skewer, all of which can be inserted into the skewer insertion hole for fixing, users can purchase and make barbecue skewers by themselves, without being limited to special barbecue skewers for barbecue ovens, and can also purchase and make many barbecue skewers for threading food, which can greatly reduce the use cost of the device and is also convenient for users to use.

[0006] Preferably, the limit block is block-shaped, spherical or ellipsoidal; when the elastic member is in a natural state, a part of the limit block is located in the sign insertion hole, and the other part of the limit block is located in the placement hole; when the limit block is block-shaped, the front wall of the limit block is inclined toward the rear side in the direction from the end of the elastic member connected to the inner wall of the placement hole to the end of the elastic member connected to the limit block. When the limit block in the present device is block-shaped, the front wall of the limit block is inclined toward the rear side in the direction from the end where the elastic member is connected to the inner wall of the placement hole to the end where the elastic member is connected to the limit block, so that the barbecue skewer can be inserted from the front side of the skewer insertion hole, and the limit block can be pushed to move into the placement hole; when the limit block in the present device is spherical or ellipsoidal, the spherical surface and the ellipsoidal surface themselves have an inclination, and when the barbecue skewer is pushed against the hemisphere of the spherical surface and the ellipsoidal surface away from the elastic member, the limit block can be pushed to move into the placement hole. In the present technical solution, the limit block is set to be spherical, and the diameter of the spherical limit block is smaller than the aperture of the placement hole, and larger than the aperture of the skewer insertion hole; a part of the limit block is located in the skewer insertion hole, and the other part of the limit block is located in the placement hole, so as to limit the moving direction of the limit block and prevent the limit block from swinging.

[0007] Preferably, the driven gear is a double-step gear, the placement hole is provided on the first step, the placement hole passes through the side wall of the first step, a retaining spring is sleeved on the outer circumferential wall of the first step, and one end of the elastic member is abutted against the inner circumferential wall of the retaining spring. In this device, the elastic member needs to be installed in the placement hole, which is inconvenient for production. In this technical solution, the driven gear is provided as a double-step gear, the placement hole is provided on the first step, and the placement hole passes through the side wall of the first step. When installing, the limit block and the elastic member are placed in the placement hole, and then the retaining spring is sleeved on the outer circumferential wall of the first step. The elastic member is abutted against the retaining spring, and the retaining spring limits the position of the elastic member to prevent the elastic member from popping out of the placement hole, which is convenient for the overall installation of the device.

[0008] Preferably, the skewer insertion hole is the center hole of the driven gear. In the technical solution, the skewer insertion hole is the center hole of the driven gear, and even grilling can be achieved when rotating the grill.

[0009] A barbecue oven comprises a box body, a heating tube and a plurality of barbecue skewer self-locking devices, wherein a cavity is provided in the box body, one side of the cavity is open, the heating tube is arranged in the cavity, the driven gears in the plurality of barbecue skewer self-locking devices are all rotatably arranged on the side wall of the cavity, two adjacent driven gears are meshed with each other and the rotation directions of the two adjacent driven gears are opposite, a driving device and a driving gear are arranged in the box body, the driving gear is connected to the output shaft of the driving device, and the driving gear is meshed with any one of the driven gears.

[0010] In the device, a cavity is arranged in the box body, one side of the cavity is open, a driven gear in the barbecue skewer self-locking device is rotatably arranged on the side wall of the cavity, and a heating tube is arranged in the cavity. When in use, the barbecue skewer enters the cavity from the opening of the cavity and is inserted into the skewer insertion hole and fixed on the barbecue skewer self-locking device, and then the driving device and the heating tube are started, the driving device drives the driving gear to rotate and then drives all the driven gears to rotate, so that the barbecue skewers fixed on the skewer insertion hole are all rotated, so that rotating barbecue is realized, and the food on the barbecue skewer is evenly grilled.

[0011] Preferably, the heating tube is an explosion-proof carbon fiber quartz heating tube. Most existing barbecue ovens use stainless steel dry-burning tube heating tubes and silicon carbide ceramic heating tubes. The above two heating tubes heat up slowly, and the surface temperature cannot reach a temperature similar to that of charcoal barbecue, so the best barbecue eating effect cannot be achieved. The present invention uses an explosion-proof carbon fiber quartz heating tube as a heat source. The explosion-proof carbon fiber quartz heating tube has a long service life, fast heating and temperature rise, high temperature resistance of 800°C, no bursting when exposed to water or high oil temperature, low power, environmental protection and smokeless, non-toxic to the human body, and the electric heat conversion rate of the explosion-proof carbon fiber quartz heating tube is as high as 90%. The temperature of the heating zone in 10 seconds can reach more than 500°C. The use of explosion-proof carbon fiber quartz heating tubes can save users' barbecue costs and achieve better barbecue effects.

[0012] Preferably, the barbecue skewer self-locking device is located below the heating tube, and a first reflective heat-insulating heating plate is provided in the cavity, and the first reflective heat-insulating heating plate is located above the heating tube, and the reflective surface of the first reflective heat-insulating heating plate is its bottom wall. In the present technical solution, a first reflective heat-insulating heating plate is provided, and the first reflective heat-insulating heating plate can reduce heat loss and play a heat-collecting role. The explosion-proof carbon fiber quartz heating tube cooperates with the first reflective heat-insulating heating plate to rapidly increase the temperature in the barbecue oven cavity to a temperature close to the surface temperature of the charcoal fire, and can achieve the best eating effect for frying, roasting, and hot pot.

[0013] Preferably, the first reflective heat insulation heating board is slidably arranged in the cavity, the first reflective heat insulation heating board can slide in and out of the cavity, the top wall of the cavity is provided with a through hole, a pot is placed above the through hole, a second reflective heat insulation heating board is slidably arranged in the cavity, the second reflective heat insulation heating board can slide in and out of the cavity, the second reflective heat insulation heating board is located below the heating tube, and the reflective surface of the second reflective heat insulation heating board is its top wall. In the technical solution, a through hole is opened on the top wall of the cavity, and the first reflective heat insulation heating plate is slidably arranged in the cavity, and the reflective heat insulation effect can be adjusted as needed. The position of the first reflective heat insulation heating plate is slid, and then the temperature is fine-tuned again after the heating tube adjusts the temperature, so that the barbecue temperature is in the best state for barbecue. At the same time, a pot is placed above the through hole, and a second reflective heat insulation heating plate is slidably arranged in the cavity, and the second reflective heat insulation heating plate can slide in and out of the cavity. The second reflective heat insulation heating plate is located below the heating tube, and the reflective surface of the second reflective heat insulation heating plate is its top wall. When barbecue is performed, the second reflective heat insulation heating plate is removed. When barbecue is not performed, the first reflective heat insulation heating plate is removed, and the heating tube and the second reflective heat insulation heating plate are used to heat the pot. Frying, stir-frying and hot pot cooking can be performed in the pot, thereby realizing multiple uses of one device. Alternatively, both the first reflective heat insulation heating plate and the second reflective heat insulation heating plate may not be installed, and frying and grilling can be performed at the same time.

[0014] Preferably, it also includes an oil collecting box, the front side of the cavity is open, the driven gear is rotatably arranged on the rear wall of the cavity, a plurality of skewers are provided on the top of the front wall and the rear wall of the oil collecting box, the plurality of skewers on the front wall of the oil collecting box and the plurality of skewers on the rear wall of the oil collecting box correspond one to one, the plurality of skewers on the front wall of the oil collecting box and the plurality of driven gears correspond one to one, and the barbecue skewers can pass through the skewers slots and enter the skewers insertion holes. An oil collecting box is provided in the present technical solution. When in use, the oil collecting box is located below the barbecue skewer self-locking device to collect oil. At the same time, a plurality of skewer grooves are provided on the top of the front wall and the rear wall of the oil collecting box. The plurality of skewer grooves on the front wall of the oil collecting box correspond one to one with the plurality of skewer grooves on the rear wall of the oil collecting box, and the plurality of skewer grooves on the front wall of the oil collecting box correspond one to one with the plurality of driven gears. The barbecue skewers can pass through the skewer grooves and enter the skewer insertion holes. When in use, the barbecue skewers are placed in the skewer grooves, and then the oil collecting box is placed in the cavity. At this time, the barbecue skewers are pushed and pushed into the skewer insertion holes. In this way, the barbecue skewers only need to be placed on the skewer grooves and then pushed to fix the barbecue skewers. This is simple and convenient. In the present technical solution, the skewer grooves and the skewer insertion holes are at the same horizontal height, and a plurality of barbecue skewer self-locking devices are horizontally distributed in a row.

[0015] Preferably, it also includes a placement box, and the plurality of barbecue skewer self-locking devices are all arranged in the placement box, and the driven gear is rotatably arranged on the inner rear wall of the placement box, and the rear wall of the box body includes two heat insulation boards, and the placement box is placed between the two heat insulation boards, and the front wall of the placement box is provided with a plurality of first through holes, and the heat insulation board located at the front side is provided with a plurality of second through holes, and the first through holes, the second through holes and the driven gear correspond to each other one by one, and the barbecue skewer can pass through the second through holes and the first through holes to enter the skewer insertion hole. In this technical solution, a placement box is provided, and the plurality of barbecue skewer self-locking devices are all arranged in the placement box, and the rear wall of the box body includes two heat insulation boards, and the double-layer heat insulation boards make the device have a good heat insulation effect, and after the driven gear is installed in the placement box, the placement box is directly placed between the two heat insulation boards, which is convenient for the overall installation of the device.

[0016] Preferably, the front wall of the oil collecting box is divided into a fixed plate and a movable plate, the movable plate is located above the fixed plate, the movable plate is hinged to the fixed plate, the movable plate is fixed to the side wall of the oil collecting box through a limiting mechanism, and two cross beams are arranged in the oil collecting box. When in use, the limiting mechanism is opened, the movable plate is rotated and folded downward, and the barbecue tongs can be placed on the two cross beams to grill the remaining food without barbecue skewers.

[0017] The beneficial effects of the present invention are embodied in that: in the technical solution, a placement hole is opened on the side wall of the skewer insertion hole of the driven gear, one end of the elastic member is connected to the inner wall of the placement hole, and the other end of the elastic member is connected to the limit block, the limit block is located in the skewer insertion hole, and the limit block can be telescoped into the placement hole; in the direction from the end of the elastic member connected to the inner wall of the placement hole to the end of the elastic member connected to the limit block, the front wall of the limit block is inclined toward the rear side, and when in use, the barbecue skewer is inserted from the front side of the skewer insertion hole, at which time the barbecue skewer contacts the front wall of the limit block, and the barbecue skewer pushes the limit block toward the placement hole. The skewers are moved into the placement hole, and the limit block moves into the placement hole to compress the elastic member. The elastic member has an elastic restoring force, and the elastic restoring force of the elastic member is used to fix the barbecue skewers. The device can clamp barbecue skewers in various shapes, whether they are steel skewers, bamboo skewers, flat skewers, round skewers, or square skewers, all of which can be inserted into the skewers insertion hole for fixation. Users can purchase and make barbecue skewers by themselves, and are not limited to special barbecue skewers for barbecue ovens. At the same time, they can also purchase and make many barbecue skewers for threading food, which can greatly reduce the use cost of the device and is also convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0019] Figure 1It is a front view of the self-locking device for grilling skewers in the present invention;

[0020] Figure 2 It is a schematic diagram of the overall structure of the self-locking device for grilling skewers in the present invention;

[0021] Figure 3 A schematic diagram of the connection structure between the elastic member and the limit block in the present invention;

[0022] Figure 4 It is a schematic diagram of the connection structure when the elastic member and the limit block are spherical in the present invention;

[0023] Figure 5 This is a front view of the barbecue oven of the present invention;

[0024] Figure 6 This is a schematic diagram of the connection relationship between the heating tube and the barbecue box in the present invention;

[0025] Figure 7 It is a schematic diagram of the overall structure of the oil collecting box in the present invention;

[0026] Figure 8 It is a schematic diagram of the connection relationship between the placement box and the power box in the present invention.

[0027] In the accompanying drawings, 1-driven gear, 2-limiting block, 3-stick insertion hole, 4-placing hole, 5-elastic member, 6-first step, 7-circlip, 8-box, 9-cavity, 10-heating tube, 11-driving gear, 12-first slide groove, 13-second slide groove, 14-oil collecting box, 15-stick groove, 16-fixed plate, 17-movable plate, 18-placing box, 19-pot. DETAILED DESCRIPTION

[0028] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0029] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0030] Example 1

[0031] like Figure 1-Figure 4 As shown, the present embodiment includes a driven gear 1, an elastic member 5 and a limit block 2. A placement hole 4 is opened on the side wall of the skewer insertion hole 3 of the driven gear 1. One end of the elastic member 5 is connected to the inner wall of the placement hole 4, and the other end of the elastic member 5 is connected to the limit block 2. The limit block 2 is located in the skewer insertion hole 3, and the limit block 2 can be extended into the placement hole 4. Inserting the barbecue skewer from the front side of the skewer insertion hole 3 can resist the limit block 2 and move it into the placement hole 4.

[0032] In this embodiment, the driven gear 1 is a double-step gear, the placement hole 4 is arranged on the first step 6, the placement hole 4 penetrates the side wall of the first step 6, a retaining spring 7 is sleeved on the outer circumferential wall of the first step 6, and one end of the elastic member 5 is against the inner circumferential wall of the retaining spring 7. In this embodiment, the stop block 2 is block-shaped, spherical or ellipsoidal; when the elastic member 5 is in a natural state, a part of the stop block 2 is located in the stick insertion hole 3, and the other part of the stop block 2 is located in the placement hole; when the stop block 2 is block-shaped, the front wall of the stop block 2 is inclined to the rear side from the end of the elastic member 5 connected to the inner wall of the placement hole 4 to the end of the elastic member 5 connected to the stop block 2. In this embodiment, the stop block 2 is a spherical stainless steel bead. When the elastic member 5 is in a natural state, one end of the elastic member 5 contacts the retaining spring 7. At this time, the height of the spherical stainless steel bead entering the stick insertion hole 3 occupies two-thirds of the height of the stick insertion hole 3. In this embodiment, the diameter of the stainless steel bead is smaller than the aperture of the placement hole 4, and larger than the aperture of the stick insertion hole 3. After various experiments, it was found that this arrangement position allows the barbecue skewers to be better inserted into the skewers insertion hole 3 and is also convenient to install. In this embodiment, the elastic member 5 is a compression spring.

[0033] Example 2

[0034] This embodiment is further limited on the basis of embodiment 1, such as Figure 5-Figure 8 As shown, in this embodiment, a housing 8, a heating tube 10 and a plurality of self-locking devices for grilling skewers are included. The housing 8 has a cavity 9, one side of which is open. The heating tube 10 is disposed in the cavity 9. The driven gears 1 in the plurality of self-locking devices for grilling skewers are all rotatably disposed on the side wall of the cavity 9. Two adjacent driven gears 1 mesh with each other and the rotation directions of the two adjacent driven gears 1 are opposite. A driving device and a driving gear 11 are disposed in the housing 8. The driving gear 11 is connected to the output shaft of the driving device, and the driving gear 11 meshes with any one of the driven gears 1. In this embodiment, the self-locking devices for grilling skewers are arranged horizontally in a row, the heating tube 10 is disposed horizontally, the driving device is a motor, and the driven gear 1 is fixed on a rotating shaft, and the rotating shaft is rotatably disposed on the side wall of the cavity 9 to realize that the driven gear 1 is rotatably disposed on the side wall of the cavity 9. In this embodiment, the front side of the cavity 9 is open.

[0035] The heating tube 10 in this embodiment is a circular, M-shaped, U-shaped or straight explosion-proof carbon fiber quartz heating tube.

[0036] In order to achieve a better heating effect of the device, the barbecue skewer self-locking device in the present embodiment is located below the heating tube 10, and a first reflective heat insulation heating plate is provided in the cavity 9, and the first reflective heat insulation heating plate is located above the heating tube 10, and the reflective surface of the first reflective heat insulation heating plate is its bottom wall.

[0037] In order to enable the device to realize multiple functions, in this embodiment, the first reflective heat insulation heating board is slidably arranged in the cavity 9, and the first reflective heat insulation heating board can slide in and out of the cavity 9. The top wall of the cavity 9 is provided with a through hole, and a pot 19 is placed above the through hole. A second reflective heat insulation heating board is slidably arranged in the cavity 9, and the second reflective heat insulation heating board can slide in and out of the cavity 9. The second reflective heat insulation heating board is located below the heating tube 10, and the reflective surface of the second reflective heat insulation heating board is its top wall. In this embodiment, the pot 19 is a square pot.

[0038] In this embodiment, the first slide groove 12 and the second slide groove 13 are provided on the two side walls of the cavity 9, the front sides of the first slide groove 12 and the second slide groove 13 are open, the first reflective heat insulation heating board is slidably connected to the first slide groove 12, and the second reflective heat insulation heating board is slidably connected to the second slide groove 13, so that the first reflective heat insulation heating board can slide in and out of the cavity 9 and the second reflective heat insulation heating board can slide in and out of the cavity 9. In this embodiment, the reflective parts of the first reflective heat insulation heating board and the second reflective heat insulation heating board are made of oxidized mirror aluminum light reflective sheet.

[0039] The present embodiment also includes an oil collecting box 14, the driven gear 1 is rotatably arranged on the rear side wall of the cavity 9, and a plurality of skewer grooves 15 are provided on the top of the front wall and the rear wall of the oil collecting box 14, the plurality of skewer grooves 15 on the front wall of the oil collecting box 14 correspond to the plurality of skewer grooves 15 on the rear wall of the oil collecting box 14, and the plurality of skewer grooves 15 on the front wall of the oil collecting box 14 correspond to the plurality of driven gears 1, and the barbecue skewers can pass through the skewer grooves 15 and enter the skewer insertion hole 3. The oil collecting box 14 in the present embodiment can enter and exit the cavity 9. The bottom of the skewer groove 15 in the present embodiment is at the same height as the bottom of the skewer insertion hole 3.

[0040] The present embodiment also includes a placement box 18, and the plurality of barbecue skewers self-locking devices are all arranged in the placement box 18. The driven gear 1 is rotatably arranged on the inner rear wall of the placement box 18. The rear wall of the box body 8 includes two insulation boards. The placement box 18 is placed between the two insulation boards. A plurality of first through holes are opened on the front wall of the placement box 18, and a plurality of second through holes are opened on the insulation board located on the front side. The first through holes, the second through holes and the driven gear 1 correspond to each other one by one, and the barbecue skewers can pass through the second through holes and the first through holes to enter the skewers insertion hole 3.

[0041] In this embodiment, the driving device and the driving gear 11 are arranged in a power box, and the power box is arranged between two heat insulation plates. The side walls adjacent to the power box and the placement box 18 are provided with through holes for the driving gear 11 and the driven gear 1 meshing therewith to rotate, thereby preventing high temperature from damaging the driving device.

[0042] The front wall of the oil collecting box 14 in this embodiment is divided into a fixed plate 16 and a movable plate 17, the movable plate 17 is located above the fixed plate 16, the movable plate 17 is hinged on the fixed plate 16, the movable plate 17 is fixed to the side wall of the oil collecting box 14 through a limiting mechanism, and two cross beams are provided in the oil collecting box 14. In this embodiment, the height of the cross beam is higher than the height of the bottom end of the movable plate 17, and the limiting mechanism in this embodiment is a bolt and a threaded hole. When the movable plate 17 is vertical, the bolt passes through a side wall of the oil collecting box 14 and enters the movable plate 17 for fixing.

[0043] In this embodiment, a control system is also provided, and a touch screen is provided on the box 8. The system is configured to select temperature, time, alarm and other functions according to the type of grilled food, so as to prevent over-grilling or failure to reach the grilling time during the grilling process, which affects the taste of the grilled food.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A barbecue oven, characterized in that: The invention comprises a housing (8), a heating tube (10) and a plurality of barbecue skewer self-locking devices, wherein the housing (8) has a cavity (9) therein, one side of the cavity (9) is open, the heating tube (10) is arranged in the cavity (9), the driven gears (1) in the plurality of barbecue skewer self-locking devices are all rotatably arranged on the side wall of the cavity (9), two adjacent driven gears (1) are meshed with each other and the rotation directions of the two adjacent driven gears (1) are opposite, a driving device and a driving gear (11) are arranged in the housing (8), the driving gear (11) is connected to the output shaft of the driving device, and the driving gear (11) is connected to the output shaft of the driving device. 11) meshes with any driven gear (1); the barbecue skewer self-locking device comprises a driven gear (1), an elastic member (5) and a limit block (2); a placement hole (4) is formed on the side wall of the skewer insertion hole (3) of the driven gear (1); one end of the elastic member (5) is connected to the inner wall of the placement hole (4); the other end of the elastic member (5) is connected to the limit block (2); the limit block (2) is located in the skewer insertion hole (3); the limit block (2) can be extended into the placement hole (4); when the barbecue skewer is inserted from the front side of the skewer insertion hole (3), the limit block (2) can be pressed against and moved into the placement hole (4); The limit block (2) is block-shaped, spherical or ellipsoidal; when the elastic member (5) is in a natural state, a portion of the limit block (2) is located in the sign insertion hole (3), and another portion of the limit block (2) is located in the placement hole; when the limit block (2) is block-shaped, in a direction from the end of the elastic member (5) connected to the inner wall of the placement hole (4) to the end of the elastic member (5) connected to the limit block (2), the front wall of the limit block (2) is inclined toward the rear side; The driven gear (1) is a double-step gear, the placement hole (4) is arranged on the first step (6), the placement hole (4) passes through the side wall of the first step (6), a retaining spring (7) is sleeved on the outer circumferential wall of the first step (6), and one end of the elastic member (5) is abutted against the inner circumferential wall of the retaining spring (7).

2. A barbecue oven according to claim 1, characterized in that: The heating tube (10) is an explosion-proof carbon fiber quartz heating tube.

3. A barbecue oven according to claim 1, characterized in that: The barbecue skewer self-locking device is located below the heating tube (10), a first reflective heat insulation heating board is arranged in the cavity (9), the first reflective heat insulation heating board is located above the heating tube (10), and the reflective surface of the first reflective heat insulation heating board is its bottom wall.

4. A barbecue oven according to claim 3, characterized in that: The first reflective heat insulation heating board is slidably arranged in the cavity (9), and the first reflective heat insulation heating board can slide in and out of the cavity (9); a through hole is formed in the top wall of the cavity (9), and a pot (19) is placed above the through hole; a second reflective heat insulation heating board is slidably arranged in the cavity (9), and the second reflective heat insulation heating board can slide in and out of the cavity (9); the second reflective heat insulation heating board is located below the heating tube (10), and the reflective surface of the second reflective heat insulation heating board is its top wall.

5. A barbecue oven according to claim 1, characterized in that: The invention also comprises an oil collecting box (14), wherein the front side of the cavity (9) is open, the driven gear (1) is rotatably arranged on the rear side wall of the cavity (9), a plurality of skewer grooves (15) are respectively provided on the top ends of the front wall and the rear wall of the oil collecting box (14), the plurality of skewer grooves (15) on the front wall of the oil collecting box (14) and the plurality of skewer grooves (15) on the rear wall of the oil collecting box (14) correspond one-to-one, the plurality of skewer grooves (15) on the front wall of the oil collecting box (14) and the plurality of driven gears (1) correspond one-to-one, and the barbecue skewers can pass through the skewer grooves (15) and enter the skewer insertion hole (3).

6. A barbecue oven according to claim 5, characterized in that: It also includes a placement box (18), a plurality of the barbecue skewer self-locking devices are arranged in the placement box (18), a driven gear (1) is rotatably arranged on the inner rear wall of the placement box (18), the rear wall of the box body (8) includes two heat insulation boards, the placement box (18) is placed between the two heat insulation boards, a plurality of first through holes are opened on the front wall of the placement box (18), a plurality of second through holes are opened on the heat insulation board located at the front side, the first through holes, the second through holes and the driven gear (1) correspond to each other one by one, and the barbecue skewer can pass through the second through holes and the first through holes to enter the skewer insertion hole (3).

7. A barbecue oven according to claim 5, characterized in that: The front wall of the oil collecting box (14) is divided into a fixed plate (16) and a movable plate (17). The movable plate (17) is located above the fixed plate (16). The movable plate (17) is hinged to the fixed plate (16). The movable plate (17) is fixed to the side wall of the oil collecting box (14) via a limiting mechanism. Two cross beams are provided in the oil collecting box (14).

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