CN220124505U - Oven with baking oven - Google Patents

Abstract

The utility model relates to the technical field of baking appliances, in particular to an oven. According to the oven provided by the utility model, when the first convex column on the side table is arranged in the mounting groove and is abutted against the groove wall at the upper end of the mounting groove, and the second convex column is accommodated in the locking groove, the side table is positioned at the supporting position, the physical placing performance of the side table is realized, the convenience of barbecue is improved, the side table is supported by the supporting beam, the bearing capacity of the side table is improved, meanwhile, the side table is connected with the oven frame bracket through the groove and the convex column, the installation is simpler, and the integral structure of the oven is simplified. The second projection is deviate from the locking groove, and first projection slides to the second end of mounting groove, and the second end of mounting groove extends along the direction towards the locking groove, and the side platform is in folding position this moment, reduces the space that the oven occupy when not using.

Description

Oven with baking oven

Technical Field

The utility model relates to the technical field of baking appliances, in particular to an oven.

Background

Ovens, which are devices for baking food products in the form of hot air, are currently popular, mainly gas ovens and charcoal ovens. Among them, the gas oven has been widely used in the daily life of people, and the gas oven generates heat by burning gas, and the barbecue time is fast and convenient.

However, the prior art has the following problems: the side stand of the oven is relatively complicated in the installation process, and a plurality of parts, fasteners and various tools are required to be arranged. The combination and matching precision of each part is high, and the use effect of the side table of the oven is affected by poor precision.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide the oven, which can effectively solve the problems of complicated installation of the side table of the oven and more parts, and reduce the space occupied by the oven when the oven is not used.

The technical problems are solved by the following technical scheme:

an oven, comprising:

the furnace body is provided with a furnace body,

the furnace frame is used for supporting the furnace body, at least one side of the furnace frame is provided with a side rack, the side rack comprises two supporting beams which are opposite and are arranged at intervals, the inner side surface of each supporting beam is provided with a locking groove and a mounting groove, the first end of each mounting groove and the locking groove are arranged at intervals in the extending direction of the supporting beam, and the second end of each mounting groove extends along the direction facing the locking groove;

the side tables are arranged corresponding to the side tables, boss groups are arranged on two opposite sides of each side table, each boss group comprises a first boss and a second boss which are arranged at intervals, and the first bosses can be slidably and rotatably arranged in the mounting grooves so that the side tables can be switched between a supporting position and a folding position; when the side table is in the supporting position, the second protruding columns are accommodated in the locking grooves and the first protruding columns are abutted to the upper end groove walls of the mounting grooves, when the side table is in the folding position, the second protruding columns are separated from the locking grooves, the first protruding columns slide to the second ends of the mounting grooves, and the side table is folded relative to the furnace frame.

Compared with the background technology, the oven has the beneficial effects that:

according to the oven provided by the utility model, when the first convex column on the side table is arranged in the mounting groove and is abutted against the groove wall at the upper end of the mounting groove, and the second convex column is accommodated in the locking groove, the side table is positioned at the supporting position, and the side table is connected with the oven rack bracket through the groove and the convex column, compared with the oven in the prior art, the side table is simpler to mount, fewer parts are required, and the overall structure of the oven is simplified. The second projection is deviate from the locking groove, and first projection slides to the second end of mounting groove, and the second end of mounting groove extends along the direction towards the locking groove, and the side platform is in folding position this moment, reduces the space that the oven occupies when not using, is convenient for simultaneously to the transport of oven, has effectively improved the transport flexibility and the convenience of oven.

In one embodiment, when the side stand is at the supporting position, the height of the central shaft of the first convex column is greater than that of the central shaft of the second convex column, and the distance between the first convex column and the furnace body is smaller than that between the second convex column and the furnace body.

In one embodiment, the mounting groove comprises a sliding section, a first end of the sliding section is provided with a first opening penetrating through the upper surface of the supporting beam, the locking groove is provided with a second opening penetrating through the upper surface of the supporting beam, the first opening and the second opening are arranged at intervals, the first protruding column enters the mounting groove through the first opening, and the second protruding column enters the locking groove through the second opening.

In one embodiment, the sliding section is disposed at an incline, and the first end of the sliding section is higher than the second end of the sliding section.

In one embodiment, the mounting groove further comprises a limiting section, the limiting section and the sliding section are arranged at an included angle, and the limiting section extends to the lower surface of the supporting beam.

In one embodiment, a first limiting protrusion is convexly arranged on the groove wall of the mounting groove, and the first limiting protrusion is positioned at one end of the sliding section far away from the limiting section so as to limit the first convex column to withdraw from the sliding section in the rotating process;

and/or the groove wall of the locking groove is convexly provided with a second limiting protrusion so as to limit the second convex column to withdraw from the locking groove when one end of the side table, which is close to the furnace body, is pressed.

In one embodiment, the oven further comprises a fastener, wherein two ends of the fastener are respectively connected with two support beams oppositely arranged.

In one embodiment, the fastening piece comprises a connecting rod and inserting parts respectively arranged at two ends of the connecting rod, the supporting beam is provided with inserting holes, and the inserting parts are matched with the inserting holes to realize the installation of the fastening piece.

In one embodiment, the bottom of the side table is provided with an avoidance groove, and the part of the connecting rod is arranged in the avoidance groove.

In one embodiment, each of the support beams is provided with a hand grip.

Drawings

Fig. 1 is a schematic structural view of a side stand of an oven according to an embodiment of the present utility model in a supporting position;

FIG. 2 is a schematic view of a side stand of an oven according to an embodiment of the present utility model in a folded position;

FIG. 3 is a schematic view of a support beam of an oven according to an embodiment of the present utility model;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a partial cross-sectional view of a side sill and a support beam when the side sill is in a supported position in accordance with an embodiment of the present utility model;

FIG. 6 is a schematic view of a fastener according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a structure of a furnace frame provided with a furnace body according to an embodiment of the present utility model;

FIG. 8 is a partial enlarged view at B in FIG. 7;

FIG. 9 is a front view of a side stand provided by an embodiment of the present utility model;

fig. 10 is a schematic structural diagram of a side stand according to an embodiment of the present utility model.

Description of the reference numerals:

1. a furnace body;

2. a furnace frame; 21. a side stand; 211. a support beam; 2111. a first reinforcing rib; 2112. a second reinforcing rib; 2113. a hand grip; 22. a shelf; 23. a walking wheel; 201. a locking groove; 202. a mounting groove; 2021. a sliding section; 2022. a limiting section; 203. a plug hole; 204. a limit groove;

3. a side table; 31. a first post; 32. a second post; 33. an avoidance groove;

4. the first limiting protrusion;

5. the second limiting bulge;

6. a fastener; 61. a connecting rod; 62. and a plug-in part.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 10, the embodiment of the utility model provides an oven, which can effectively solve the problems that the side table of the oven is complicated to install and needs more parts, prevent the side table from being unstable in inclination and causing articles to slide down, and reduce the occupied space of the oven when not in use.

Specifically, as shown in fig. 1 to 5, the oven comprises a oven body 1, an oven rack 2 and a side table 3, wherein the oven body 1 is used for baking and cooking food, the oven rack 2 is used for supporting the oven body 1, at least one side of the oven rack 2 is provided with a side table 21, the side table 21 comprises two supporting beams 211 which are opposite and are arranged at intervals, a locking groove 201 and a mounting groove 202 are formed in the inner side surface of each supporting beam 211, a first end of the mounting groove 202 and the locking groove 201 are arranged at intervals in the extending direction of the supporting beam 211, and a second end of the mounting groove 202 extends along the direction towards the locking groove 201; the side table 3 is arranged corresponding to the side table 21, two opposite sides of the side table 3 are respectively provided with a boss set, each boss set comprises a first boss 31 and a second boss 32 which are arranged at intervals, and the first boss 31 is slidably and rotatably arranged in the mounting groove 202 so as to enable the side table 3 to be switched between a supporting position and a folding position; when the side stand 3 is at the supporting position, the second protruding columns 32 are accommodated in the locking grooves 201, the first protruding columns 31 are in abutting contact with the groove walls at the upper ends of the mounting grooves 202, when the side stand 3 is at the folding position, the second protruding columns 32 are separated from the locking grooves 201, the first protruding columns 31 slide to the second ends of the mounting grooves 202, and the side stand 3 is folded relative to the furnace frame 2.

According to the oven provided by the embodiment, when the first convex column 31 on the side table 3 is arranged in the mounting groove 202 and the first convex column 31 is abutted to the groove wall at the upper end of the mounting groove 202, and the second convex column 32 is accommodated in the locking groove 201, the side table 3 is in the supporting position, so that the side table 3 can be used for placing articles such as food and condiments, the storage performance of the side table 3 is realized, the convenience of barbecue is improved, the side table 3 is connected with the bracket of the oven frame 2 through the groove and the convex column, compared with the side table 3 of the oven in the prior art, the installation of the oven is simpler, fewer parts are required, and the overall structure of the oven is simplified. The second projection 32 is deviate from locking groove 201, and first projection 31 slides to the second end of mounting groove 202, and the second end of mounting groove 202 extends along the direction towards locking groove 201, and side platform 3 is in folding position this moment, reduces the space that the oven occupy when not using, is convenient for simultaneously to the transport of oven, has effectively improved the transport flexibility and the convenience of oven.

It will be appreciated that the side racks 21 are provided on both sides of the hob 2 to ensure balance of the oven on both sides in use.

With continued reference to fig. 1 and 2, the hob 2 further has a shelf 22, the shelf 22 being located below the support beam 211 for the user to place objects, and both ends of one side of the hob 2 are provided with travelling wheels 23 for the user to move the whole oven.

In some embodiments, with continued reference to fig. 5, the mounting groove 202 includes a slip segment 2021, a first end of the slip segment 2021 having a first opening extending through an upper surface of the support beam 211, the locking groove 201 having a second opening extending through the upper surface of the support beam 211, the first opening being spaced from the second opening, the first post 31 entering the mounting groove 202 through the first opening, and the second post 32 entering the locking groove 202 through the second opening. The upper surface of the supporting beam 211 is provided with a first opening and a second opening, respectively, and the convex column enters the corresponding groove through the opening, and can be separated from the groove through the opening, so that the side stand 3 and the side stand 21 can be detachably connected. This facilitates the purpose of replacing the side stand 3.

Further, the sliding section 2021 is obliquely arranged, and the first end of the sliding section 2021 is higher than the second end of the sliding section 2021, that is, the end of the sliding section 2021 close to the furnace body 1 is higher than the end of the sliding section 2021 far away from the furnace body 1, so that when the side stand 3 is in the supporting position, the side stand 3 can be prevented from moving along the sliding section 2021 after the sliding section 2021 is vibrated to influence the position of the side stand 3.

In order to realize the limit of the side stand 3 at the folding position, the side stand 3 is prevented from moving at the sliding section 2021 when in the folding position, the mounting groove 202 further comprises a limit section 2022, the limit section 2022 and the sliding section 2021 are arranged at an included angle, and the limit section 2022 extends to the lower surface of the supporting beam 211. Therefore, an inflection point is formed at the joint of the limiting section 2022 and the sliding section 2021, the arrangement of the limiting section 2022 can further limit the first convex column 31 from vibrating to enter the sliding section 2021, and the first convex column 31 is prevented from sliding randomly in the mounting groove 202, so that the purpose of positioning the contralateral platform 3 is achieved.

In some embodiments, the groove wall of the mounting groove 202 is convexly provided with a first limiting protrusion 4, and the first limiting protrusion 4 is located at one end of the sliding section 2021 away from the limiting section 2022, so as to limit the first boss 31 from exiting the sliding section 2021 during the rotation process; therefore, when the articles are placed close to the furnace body 1, the side table 3 is pressed down, so that the free end of the side table 3 is tilted, and the articles slide to the side of the furnace body 1.

The groove wall of the locking groove 201 is convexly provided with a second limiting protrusion 5 to limit the second protruding column 32 to withdraw from the locking groove 201 when one end of the side table 3, which is close to the furnace body 1, is pressed.

The cross section of the first spacing bulge 4 and the second spacing bulge 5 is semicircular, so when the side table 3 can be detached conveniently, the first convex column 31 can be separated from the mounting groove 202, and the second convex column 32 can be separated from the locking groove 201.

In some embodiments, in order to prevent the support beams 211 disposed on two sides of the furnace body 1 from being separated to cause the furnace body 1 to fall, the oven further includes a fastening member 6, two ends of the fastening member 6 are respectively connected to two support beams 211 disposed opposite to each other, and the fastening member 6 is disposed to avoid the support beams 211 disposed opposite to each other from being separated after being extruded.

Specifically, each support beam 211 is provided with a plug hole 203, the plug hole 203 is provided below the mounting groove 202, and the fastener 6 is slidably inserted into the plug hole 203 to connect the two support beams 211 that are disposed opposite and at intervals. After the two supporting beams 211 are connected through the fastener 6, the positions of the two supporting beams 211 are relatively fixed, and the two supporting beams 211 cannot be separated under the self gravity extrusion of the furnace body 1.

When the side table 3 is in the unfolding position, the first convex column 31 is located in the sliding section 2021, specifically located on one side, away from the furnace body 1, of the first limiting protrusion 4, the first limiting protrusion 4 is in contact with the first convex column 31, the second convex column 32 is located in the locking groove 201, specifically located at the bottom of the second limiting protrusion 5, and due to the combined action of the locking groove 201 and the mounting groove 202, the positions of the second convex column 32 and the first convex column 31 are limited respectively, so that the first convex column 31 cannot move randomly in the sliding section 2021, and the side table 3 is always in the unfolding position.

When the side stand 3 needs to be stored and the side stand 3 is in the folded position, the second protruding columns 32 are separated from the locking grooves 201, the first protruding columns 31 are always located in the mounting grooves 202, the side stand 3 is pulled to move away from the furnace body 1, the first protruding columns 31 slide in the sliding sections 2021, when the first protruding columns 31 slide to the limiting sections 2022, the side stand 3 is released, the side stand 3 is suspended between the two supporting beams 211 under the action of self gravity, and at the moment, the side stand 3 is in the folded position. When the side table 3 needs to be in the unfolded position, the side table 3 is lifted to push the side table 3 to move towards the furnace body 1 in the opposite direction, and the second convex column 32 is positioned in the locking groove 201 to complete the change of the position of the side table 3.

Specifically, in some embodiments, as shown in fig. 6 to 8, the fastener 6 includes a connecting rod 61, and plug portions 62 disposed at two ends of the connecting rod 61, respectively, the plug portions 62 are disposed at an angle with the connecting rod 61, and the plug portions 62 are inserted into the plug holes 203. For example, the plugging portion 62 and the connecting rod 61 are disposed at an included angle of 90 °, and the plugging portion 62 cooperates with the plugging hole 203 to tighten the supporting beams 211 during the process of separating the supporting beams 211 from each other, so as to prevent the two supporting beams 211 from moving away from each other.

In order to save material and reduce the weight of the hob 2, the support beams 211 are hollow structures in some embodiments. The supporting beam 211 can be formed by injection molding or can be manufactured by stamping metal plates.

In order to prevent the fastener 6 from being separated from the insertion hole 203 during the process of carrying or using after being mounted, the bottom of each supporting beam 211 is provided with a limiting structure, and after the insertion portion 62 is inserted into the insertion hole 203, the limiting structure is in limiting fit with the connecting rod 61 or the insertion portion 62 so as to limit the insertion portion 62 from being separated from the insertion hole 203, thereby preventing the fastener 6 from moving relative to the supporting beam 211. The setting of limit structure can avoid fastener 6 to break away from with supporting beam 211, guarantees that fastener 6 will two supporting beams 211 be connected.

In some embodiments, with continued reference to fig. 3, 4, 7 and 8, the supporting beam 211 includes a first reinforcing rib 2111 and a second reinforcing rib 2112 disposed on an inner side surface of the supporting beam 211, the second reinforcing rib 2112 is respectively connected with an outer side surface of the supporting beam 211, a bottom wall of the supporting beam 211 and a groove wall of the mounting groove 202, the first reinforcing rib 2111 is respectively connected with the bottom wall of the supporting beam 211 and the groove wall of the mounting groove 202, the first reinforcing rib 2111 is provided with a limiting groove 204, the limiting groove 204 is an arc-shaped groove with an opening, the limiting structure is two groove walls spaced by the opening of the limiting groove 204, an extending direction of the limiting groove 204 is set at an included angle with an extending direction of the plugging hole 203, and the connecting rod 61 is clamped in the limiting groove 204. To connect the groove wall of the mounting groove 202 with the bottom wall of the support beam 211, increasing the strength of the support beam 211. The arrangement of the first reinforcing ribs 2111 can improve the convenience of the opening of the insertion hole 203, and the arrangement of the second reinforcing ribs 2112 can also improve the convenience of the opening of the limiting groove 204.

In other embodiments, the fastener 6 includes a connecting rod 61 and plug-in portions 62 respectively disposed at two ends of the connecting rod 61, the plug-in portions 62 have external threads, the limiting structure is a nut, and the portion of the plug-in portions 62 passing through the plug-in holes 203 is in threaded connection with the nut, so that the purpose of limiting the fastener 6 can be achieved, and the plug-in portions 62 are prevented from being separated from the plug-in holes 203.

Each support beam 211 is provided with a hand grip 2113. The grip portion 2113 has an arcuate configuration to enhance the comfort of gripping. Avoiding scraping and rubbing the handling personnel in the handling process.

In order to improve the stability of the side stand 3, as shown in fig. 9 and 10, in some embodiments, the central axis of the first boss 31 is higher than the central axis of the second boss 32 when the side stand 3 is in the supporting position. When the side table 3 is in the supporting position, the side table 3 is approximately horizontal, namely the free end of the side table 3 is slightly inclined upwards relative to the horizontal plane, and after an object is placed on the side table 3, the side table 3 can be pressed down due to the weight of the object, so that the side table 3 is in a horizontal state, and the free end of the side table 3 is prevented from being downward due to the gravity of the object, so that the object can be prevented from sliding or even falling relative to the side table 3.

For example, when the side stand 3 is in the supporting position, the angle α between the working surface of the side stand 3 and the horizontal plane ranges from 3 ° to 5 °, specifically, the angle α between the working surface of the side stand 3 and the horizontal plane ranges from 3 °, 4 °, or 5 °.

Since the fastener 6 is disposed below the mounting groove 202, in order to prevent interference between the side stand 3 and the fastener 6 from causing the side stand 3 to be unable to be in the folded position, in some embodiments, the bottom of the side stand 3 is provided with the escape groove 33, and a portion of the connecting rod 61 is disposed within the escape groove 33. The shape of the avoiding groove 33 can be an arc groove, the arc groove is easy to open and manufacture, and meanwhile, the corner can be prevented from being scratched by a user. Of course, in other embodiments, the relief groove 33 may be a rectangular groove.

In order to enable the side stand 3 to be disposed between the two support beams 211, in some embodiments, a connecting groove is disposed at one end of the side stand 3 near the furnace body 1, the connecting groove is disposed axisymmetrically along a central axis of the extending direction of the side stand 3, and the first protruding pillar 31 and the second protruding pillar 32 are both disposed at a bottom of the connecting groove.

In the specific content of the above embodiment, any combination of the technical features may be performed without contradiction, and for brevity of description, all possible combinations of the technical features are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing detailed description of the embodiments presents only a few embodiments of the present utility model, which are described in some detail and are not intended to limit the scope of the present utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. Oven, characterized in that it comprises:

a furnace body (1),

the furnace frame (2) is used for supporting the furnace body (1), at least one side of the furnace frame (2) is provided with a side rack (21), the side rack (21) comprises two supporting beams (211) which are opposite and are arranged at intervals, a locking groove (201) and a mounting groove (202) are formed in the inner side surface of each supporting beam (211), the first end of the mounting groove (202) and the locking groove (201) are arranged at intervals in the extending direction of the supporting beam (211), and the second end of the mounting groove (202) extends along the direction towards the locking groove (201);

the side table (3) is arranged corresponding to the side table (21), two opposite sides of the side table (3) are respectively provided with a boss group, each boss group comprises a first boss (31) and a second boss (32) which are arranged at intervals, and the first boss (31) can be slidably and rotatably arranged in the mounting groove (202) so as to enable the side table (3) to be switched between a supporting position and a folding position; when the side table (3) is in the supporting position, the second protruding columns (32) are contained in the locking grooves (201) and the first protruding columns (31) are abutted against the upper end groove walls of the mounting grooves (202), when the side table (3) is in the folding position, the second protruding columns (32) are separated from the locking grooves (201), the first protruding columns (31) slide to the second ends of the mounting grooves (202), and the side table (3) is folded relative to the furnace frame (2).

2. Oven according to claim 1, characterized in that the height of the central axis of the first stud (31) is greater than the height of the central axis of the second stud (32) when the side table (3) is in the supporting position, the distance of the first stud (31) from the oven body (1) being smaller than the distance of the second stud (32) from the oven body (1).

3. The oven according to claim 1, characterized in that the mounting groove (202) comprises a sliding section (2021), a first end of the sliding section (2021) having a first opening through an upper surface of the support beam (211), the locking groove (201) having a second opening through an upper surface of the support beam (211), the first opening being spaced apart from the second opening, the first stud (31) entering the mounting groove (202) through the first opening, the second stud (32) entering the locking groove (201) through the second opening.

4. Oven according to claim 3, characterized in that the slide section (2021) is arranged inclined, the first end of the slide section (2021) being higher than the second end of the slide section (2021).

5. The oven according to claim 3, characterized in that the mounting groove (202) further comprises a spacing section (2022), the spacing section (2022) is disposed at an angle to the sliding section (2021), and the spacing section (2022) extends toward the lower surface of the support beam (211).

6. The oven according to claim 5, characterized in that the wall of the mounting groove (202) is convexly provided with a first limit projection (4), the first limit projection (4) being located at the end of the sliding section (2021) remote from the limit section (2022) to limit the first projection (31) from exiting the sliding section (2021) during rotation;

and/or the groove wall of the locking groove (201) is convexly provided with a second limiting protrusion (5) so as to limit the second protruding column (32) to exit the locking groove (201) when one end of the side table (3) close to the furnace body (1) is pressed.

7. Oven according to claim 1, characterized in that it further comprises a fastening element (6), both ends of said fastening element (6) being connected to two support beams (211) arranged opposite each other.

8. Oven according to claim 7, characterized in that the fastening piece (6) comprises a connecting rod (61) and plug-in parts (62) arranged at two ends of the connecting rod (61), the support beam (211) is provided with plug-in holes (203), and the plug-in parts (62) and the plug-in holes (203) cooperate to realize the installation of the fastening piece.

9. Oven according to claim 8, characterized in that the bottom of the side table (3) is provided with an avoidance groove (33), the part of the connecting rod (61) being arranged in the avoidance groove (33).

10. Oven according to claim 1, characterized in that each support beam (211) is provided with a hand grip (2113).