Telescopic outdoor dining table

Abstract

The utility model relates to the technical field of dining table design, and discloses a telescopic outdoor dining table which comprises a normal-temperature main table top, a high-temperature-resistant main table top and a table top arranging frame, the normal-temperature main table top is arranged on the upper left portion of the table top arranging frame, a normal-temperature auxiliary table top is arranged at the left end of an inner cavity of the normal-temperature main table top, and the high-temperature-resistant main table top is arranged on the right side of the normal-temperature main table top. A high-temperature-resistant auxiliary table top is arranged at the right end of the inner cavity of the high-temperature- According to the telescopic dining table, the normal-temperature table top and the high-temperature-resistant table top are arranged, tableware and kitchenware with different temperatures can be placed and used, the telescopic dining table is suitable for different dining occasions, and when the two sets of auxiliary table tops are pulled out and fixedly supported for installation, the specific use area of the telescopic dining table can be effectively increased, and limitation on the number of people and seats in a party is reduced; by arranging the rotating assembly, the table top in different states can be completely supported, the table top supporting design structure is reduced, and the use performance of the supporting structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dining table design, in particular to a retractable outdoor dining table. Background Art

[0002] The original meaning of dining table refers to a table used for eating. According to the material, it can be divided into solid wood dining table, steel-wood dining table, marble dining table, marble dining table, marble coffee table, jade dining table, jade dining table, jade coffee table, marble dining table, etc. The use of existing dining tables is not limited to indoors. Dining tables are also set up in some parks, tourist attractions, and family courtyards for people to dine and rest, and to provide gatherings. The tabletop usable area of ​​existing outdoor dining tables is basically set in a fixed style, which is difficult to adapt to the needs of different number of users. Existing retractable dining tables are mostly electric structures, which have more complex support and retractable structures. Repeated retractable support may cause the support structure to stagnate or be damaged, and it is difficult to adapt to the more complex outdoor climate. For this reason, a retractable outdoor dining table is proposed. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In order to solve at least one aspect of the above problems, the utility model first provides a retractable outdoor dining table. The outdoor dining table in the present design adopts a purely mechanical structure setting without adding electronic circuit control, which can reduce the impact of climate on the safe use of the dining table. It has good support and retractable control performance, can adjust the size of the table top according to needs, and improve the practicality of the outdoor dining table.

[0005] (II) Technical solution

[0006] In order to solve the technical problem, the utility model provides a retractable outdoor dining table, including a normal temperature main table top, a high temperature resistant main table top and a table top setting frame, a normal temperature main table top is provided on the upper left of the table top setting frame, a normal temperature sub-table top is provided on the left end of the inner cavity of the normal temperature main table top, a high temperature resistant main table top is provided on the right side of the normal temperature main table top, a high temperature resistant sub-table top is provided on the right end of the inner cavity of the high temperature resistant main table top, anti-slip fixing seats are respectively provided at the four corners of the bottom of the table top setting frame, adjustment support frames are respectively provided in the anti-slip fixing seats, table legs are respectively provided in the inner cavity of the adjustment support frame, and mounting tripods are respectively provided at the bottom of the table legs.

[0007] As a preferred solution of the utility model, wherein: a fixed table top is provided on the panel of the table setting frame, a first bogie is provided at the left end of the fixed table top, and a second bogie is provided at the right end of the fixed table top.

[0008] As a preferred solution of the utility model, wherein: a fixed column is provided at the bottom of the first bogie, a boss is provided on the top of the fixed column, a mounting frame is provided in the center of the boss, a desktop setting buffer frame is provided on the top of the mounting frame, the desktop setting buffer frame is arranged in the bottom panel of the normal temperature main desktop, four groups of plug interfaces are evenly arranged on the edge of the mounting frame, three groups of plug interfaces are provided with desktop main brackets, the other group of plug interfaces is provided with a desktop extension bracket, a limiting nut is provided at the bottom of the desktop extension bracket, and a limiting stud is provided in the limiting nut.

[0009] Furthermore, a support shaft is provided in the center of the mounting frame, a positioning frame is provided on the outer ring of the mounting frame, a rotating notch frame is provided on the left side of the positioning frame, an anti-penetration gasket is provided at the bottom of the inner ring of the positioning frame, and an anti-slip gasket is provided on the outer end of the support shaft.

[0010] Furthermore, the first bogie is arranged at the bottom of the normal temperature main table top, the second bogie is symmetrically arranged with the first bogie, and the second bogie is arranged at the bottom of the high temperature resistant main table top.

[0011] Furthermore, the normal temperature main desktop and the high temperature resistant main desktop are symmetrically arranged, a connecting hinge is provided at the connection between the normal temperature main desktop and the high temperature resistant main desktop, and a convex strip is provided in the gap between the normal temperature main desktop and the high temperature resistant main desktop.

[0012] Furthermore, two left corners of the bottom panel of the normal temperature main desktop are respectively provided with limiting grooves, and snap-fits are respectively provided in the limiting grooves.

[0013] Furthermore, two groups of sliding frames are provided at the bottom of the inner wall of the normal temperature main desktop, two groups of sliding grooves are provided at the normal temperature auxiliary desktop corresponding to the sliding frames, plugs are provided on the right side of the sliding grooves, and a first handle is provided on the outer end wall panel of the normal temperature auxiliary desktop.

[0014] Furthermore, a slide rail is provided at the bottom of the panel extending out of the normal temperature auxiliary desktop, and a clamping hole is provided in the center of the slide rail.

[0015] Furthermore, the mounting bracket comprises a protective cover shell, the inner cavity of the protective cover shell is provided with a moisture-proof cavity, the bottom of the moisture-proof cavity is provided with a mounting plate, and the mounting plate is provided with a plurality of groups of positioning bolts.

[0016] (III) Beneficial effects

[0017] 1. The utility model provides a retractable outdoor dining table, which is provided with a normal temperature table top and a high temperature resistant table top, and can provide the placement and use of tableware and kitchen utensils of different temperatures, and is suitable for use in different dining occasions, so as to avoid using high temperature kitchen utensils to burn the table top and affect the use experience of the dining table. A normal temperature sub-table top is provided in the normal temperature main table top, and a high temperature resistant sub-table top is provided in the high temperature resistant main table top. When the two sets of sub-table tops are pulled out and fixedly installed, the specific use area of ​​the retractable dining table can be effectively increased, the restrictions on the number of people and seats for dining parties can be reduced, and the use experience of the dining table can be improved. A rotating component is provided on the supporting device arranged at the bottom of the two sets of main table tops, and its supporting angle can be changed to achieve complete support for the table top in different states, reduce the table top support design structure, improve the use performance of the supporting structure, and reduce the risk of damage to the supporting structure.

[0018] 2. The utility model sets two groups of auxiliary table tops and the main table top as a sliding connection structure, cooperates with the setting of the connecting plug to limit the two groups of auxiliary table tops, and can cooperate with the table top extension frame to complete the limited installation of the two groups of auxiliary table tops when the auxiliary table tops are extended out of the main table top for support use, so as to avoid the two groups of auxiliary table tops from shaking, and sets an adjustable height table leg assembly to adapt to different installation requirements and improve the use experience of the dining table. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the retractable outdoor dining table in a retracted state according to an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the retractable outdoor dining table in an extended state according to an embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of a tabletop setting frame of a retractable outdoor dining table according to an embodiment of the utility model;

[0022] Figure 4 It is a front view of the tabletop setting frame of the retractable outdoor dining table according to an embodiment of the utility model;

[0023] Figure 5 This is a schematic structural diagram of region A of a retractable outdoor dining table according to an embodiment of the utility model;

[0024] Figure 6 It is a schematic structural diagram of a mounting frame of a retractable outdoor dining table according to an embodiment of the utility model;

[0025] Figure 7 This is a schematic structural diagram of area B of a retractable outdoor dining table according to an embodiment of the utility model;

[0026] Figure 8 A front view of the bottom of the panel of the retractable outdoor dining table in the embodiment of the utility model with the tabletop extended;

[0027] Fig. 9 This is a schematic diagram of the connection structure between a room temperature main table top and a room temperature auxiliary table top of a retractable outdoor dining table according to an embodiment of the utility model.

[0028] Description of reference numerals:

[0029] 1 is a normal temperature main desktop, 11 is a limit groove, 12 is a bayonet, 2 is a high temperature resistant main desktop, 3 is a normal temperature auxiliary desktop, 31 is a slide rail, 32 is a bayonet hole, 33 is a sliding groove, 4 is a high temperature resistant auxiliary desktop, 5 is a desktop setting frame, 51 is a fixed table, 52 is a first bogie, 521 is a fixed column, 522 is a boss, 523 is a mounting frame, 5231 is a support shaft, 5232 is a positioning frame, 5233 is a rotating lack The mouth frame, 5234 is an anti-slip gasket, 5235 is an anti-penetration gasket, 524 is a buffer frame for the desktop, 525 is the main bracket of the desktop, 526 is an extension bracket of the desktop, 527 is a limit nut, 528 is a limit stud, 53 is a second bogie, 6 is an adjustment support frame, 7 is a table leg, 8 is an installation tripod, 81 is a protective cover shell, 82 is a moisture-proof cavity, 83 is a mounting plate, 84 is a positioning bolt, and 9 is an anti-slip fixing seat. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] See also Figure 1-9, the utility model embodiment provides a retractable outdoor dining table, including a room temperature main table top 1, a high temperature resistant main table top 2 and a table top setting frame 5, the table top setting frame 5 is provided with a room temperature main table top 1 on the upper left, a room temperature sub-table top 3 is provided at the left end of the inner cavity of the room temperature main table top 1, a high temperature resistant main table top 2 is provided on the right side of the room temperature main table top 1, and a high temperature resistant sub-table top 4 is provided at the right end of the inner cavity of the high temperature resistant main table top 2, anti-slip fixing seats 9 are respectively provided at the four corners of the bottom of the table top setting frame 5, and adjustment support frames 6 are respectively provided in the anti-slip fixing seats 9, and table legs 7 are respectively provided in the inner cavity of the adjustment support frames 6, and mounting brackets 8 are respectively provided at the bottom of the table legs 7. The outdoor dining table connects the room temperature main table top 1 and the high temperature resistant main table top 2 as a common table top, which is installed above the table top setting frame 5 to ensure that the table top setting frame 5 stably supports the common table top, the room temperature main table top 1 can be used to place common tableware such as dinner plates and fruit plates, and the high temperature resistant main table top 2 can be used to place high temperature utensils such as baking trays and charcoal grills, thereby improving the fun of using the outdoor dining table. While ensuring the safety of the outdoor dining table, a normal temperature sub-table top 3 is set to increase the use area of ​​the left end table top, and the normal temperature sub-table top 3 can be pulled out from the normal temperature main table top 1 by using the first handle. A high temperature resistant sub-table top 4 is set to increase the use area of ​​the right end table top, and the high temperature resistant sub-table top 4 can be pulled out from the high temperature resistant main table top 2 by using the second handle. The two sets of sub-table tops with telescopic control can effectively increase the use area and performance of the outdoor dining table, and improve the use experience of the outdoor dining table. The four corners of the bottom of the table setting frame 5 are respectively limited by anti-slip fixing seats 9 to limit the installation of the adjustment support frame 6, and the outer ends of the bottom of the adjustment support frame 6 are respectively provided with limiting screws, which can change the specific installation position between the adjustment support frame 6 and the table leg 7, and adjust the specific installation height of the table setting frame 5. The bottom of the table leg 7 is respectively set at a specified position by installing a tripod 8, so that the outdoor dining table is stably installed to prevent its installation state from being changed due to wind or other external factors.

[0032] See also Figure 3 A fixed table top 51 is provided on the panel of the desktop setting frame 5, a first bogie 52 is provided at the left end of the fixed table top 51, and a second bogie 53 is provided at the right end of the fixed table top 51. The panel of the desktop setting frame 5 supports the setting of the fixed table top 51. The superposition of the panel of the desktop setting frame 5 and the fixed table top 51 can effectively improve the fixed setting of the first bogie 52 and the second bogie 53, thereby ensuring the installation stability of the two sets of bogies.

[0033] See also Figure 3-5The first bogie 52 is provided with a fixed column 521 at the bottom, a boss 522 is provided at the top of the fixed column 521, a mounting frame 523 is provided in the center of the boss 522, a desktop setting buffer frame 524 is provided at the top of the mounting frame 523, and the desktop setting buffer frame 524 is arranged in the bottom panel of the main desktop 1 at normal temperature. Four groups of plug interfaces are evenly arranged on the edge of the mounting frame 523, three groups of plug interfaces are provided with desktop main brackets 525, and another group of plug interfaces is provided with a desktop extension bracket 526. A limiting nut 527 is provided at the bottom of the desktop extension bracket 526, and a limiting nut 527 is provided in the limiting nut 527. Column 528, the bottom of the first bogie 52 passes through the fixed table top 51 through the fixed column 521 and is embedded in the panel of the desktop setting frame 5, ensuring that the desktop setting frame 5 and the fixed table top 51 limit the setting of the first bogie 52, the top of the fixed column 521 supports the setting of the boss 522, and the center of the boss 522 panel fixes the installation of the mounting frame 523. The top of the mounting frame 523 supports the desktop setting buffer frame 524 to ensure the fixed setting of the bottom panel of the normal temperature main desktop 1, ensuring the support structure of the first bogie 52 supports the normal temperature main desktop 1.

[0034] See also Figure 8 , the first steering frame 52 realizes its steering control through the internal rotating assembly of the mounting frame 523, and the outer end of the mounting frame 523 completes the support setting of the normal temperature main desktop 1 by setting three groups of desktop main brackets 525 and desktop extension brackets 526. When the normal temperature auxiliary desktop 3 is stored in the inner cavity of the normal temperature main desktop 1, the desktop main bracket 525 and the desktop extension bracket 526 are arranged at the bottom of the diagonal bottom of the bottom of the normal temperature main desktop 1, and the limiting stud 528 is arranged in the bayonet 12. When the normal temperature auxiliary desktop 3 needs to be used, the normal temperature auxiliary desktop 3 is pulled out from the left end of the normal temperature main desktop 1, the connection between the limiting stud 528 and the bayonet 12 is disconnected, the desktop extension bracket 526 is moved, and the desktop extension bracket 526 is rotated to the bottom of the normal temperature auxiliary desktop 3, the limiting nut 527 is rotated, and the limiting stud 528 is screwed into the clamping hole 32 to complete the telescopic support control of the normal temperature auxiliary desktop 3.

[0035] See also Figure 5A support shaft 5231 is provided in the center of the mounting frame 523, a positioning frame 5232 is provided on the outer ring of the mounting frame 523, a rotating notch frame 5233 is provided on the left side of the positioning frame 5232, an anti-penetration gasket 5235 is provided at the bottom of the inner ring of the positioning frame 5232, and an anti-skid gasket 5234 is provided at the outer end of the support shaft 5231. The center of the mounting frame 523 supports the setting of the buffer frame 524 for the desktop by setting the support shaft 5231, and the outer end of the support shaft 5231 is enhanced by the anti-skid gasket 5234. The anti-penetration gasket 5235 is provided to reduce the influence of outdoor water vapor erosion on the supporting structure. A rotating slide is provided at the rotating notch frame 5233 of the mounting frame 523 corresponding to the rotating notch frame 5233. The mounting frame 523 limits the rotating slide by setting the positioning frame 5232, and limits the rotating slide to move only in the rotating notch frame 5233, thereby ensuring the rotation limit control of the first bogie 52 on its desktop extension bracket 526.

[0036] See also Figure 4 The first bogie 52 is arranged at the bottom of the normal temperature main desktop 1, the second bogie 53 is symmetrically arranged with the first bogie 52, the second bogie 53 is arranged at the bottom of the high temperature resistant main desktop 2, the first bogie 52 supports the setting of the normal temperature main desktop 1, and the second bogie 53 supports the setting of the high temperature resistant main desktop 2, that is, the steering assembly of the second bogie 53 is arranged at the right end of its supporting member, so as to provide support and control for the telescopic installation of the high temperature resistant auxiliary desktop 4.

[0037] See also Figure 8 The normal temperature main desktop 1 and the high temperature resistant main desktop 2 are symmetrically arranged, a connecting hinge is provided at the connection between the normal temperature main desktop 1 and the high temperature resistant main desktop 2, a convex strip is provided in the gap between the normal temperature main desktop 1 and the high temperature resistant main desktop 2, the normal temperature main desktop 1 and the high temperature resistant main desktop 2 are connected by the connecting hinge, and the two groups of main desktops are arranged to support the desktop main body, and the convex strips are arranged to avoid gaps between the two groups of main desktops, so as to avoid water leakage between the main desktops affecting the structural properties of the supporting components.

[0038] See also Figure 8 The two corners of the left end of the bottom panel of the normal temperature main desktop 1 are respectively provided with limiting grooves 11, and the limiting grooves 11 are respectively provided with snap-fits 12. The bottom of the normal temperature main desktop 1 is provided with limiting grooves 11 to provide movement space for the limiting stud 528 during the rotation of the desktop extension bracket 526. When the limiting stud 528 is screwed into the snap-fits 12, the support for the normal temperature main desktop 1 is fixed.

[0039] See also Fig. 9Two groups of sliding frames are provided at the bottom of the inner wall of the normal temperature main desktop 1, and two groups of sliding grooves 33 are provided at the normal temperature sub-desktop 3 corresponding to the sliding frames. Plugs are provided on the right sides of the sliding grooves 33, and a first handle is provided on the outer end wall panel of the normal temperature sub-desktop 3. The normal temperature sub-desktop 3 wraps the setting of the sliding frame through the sliding groove 33, and the normal temperature sub-desktop 3 is set in the normal temperature main desktop 1. The setting of the plug is used to ensure the safety of the setting of the normal temperature sub-desktop 3, which can effectively prevent the normal temperature sub-desktop 3 from being disconnected from the normal temperature main desktop 1. By pulling the first handle, the normal temperature sub-desktop 3 can be controlled to telescope and move, thereby changing the positional relationship between the normal temperature main desktop 1 and the normal temperature sub-desktop 3.

[0040] See also Figure 8 The normal temperature auxiliary desktop 3 extends out of the panel and is provided with a slide rail 31 at the bottom, and a snap-in hole 32 is provided in the center of the slide rail 31. The normal temperature auxiliary desktop 3 provides a moving space for the limiting stud 528 during the rotation of the desktop extension bracket 526 through the slide rail 31. When the limiting stud 528 is set in the snap-in hole 32, the support setting of the desktop extension bracket 526 for the normal temperature auxiliary desktop 3 is completed.

[0041] See also Figure 7 The mounting bracket 8 includes a protective cover shell 81, an inner cavity of the protective cover shell 81 is provided with a moisture-proof cavity 82, a mounting plate 83 is provided at the bottom of the moisture-proof cavity 82, and a plurality of positioning bolts 84 are provided on the mounting plate 83. The mounting bracket 8 increases the connection area with the mounting ground through the protective cover shell 81, thereby improving the stability of the desktop installation. The provision of the moisture-proof cavity 82 can reduce the erosion of the mounting plate 83 and the positioning bolts 84 by ground water vapor. The mounting bracket 8 establishes a connection with the mounting ground through the positioning bolts 84, thereby preventing the outdoor dining table from being displaced after the installation is completed.

[0042] The embodiment of the utility model provides a retractable outdoor dining table, which is integrally arranged at a designated position by means of a mounting tripod 8. Under normal circumstances, the tabletop setting frame 5 only fixes the support for the room temperature main tabletop 1 and the high temperature resistant main tabletop 2 through the first bogie 52 and the second bogie 53. When there are many users and the scale of the dinner party is large, the first handle or the second handle is pulled according to demand to pull out the room temperature sub-tabletop 3 or the high temperature resistant sub-tabletop 4, and the tabletop extension bracket 526 on the first bogie 52 or the tabletop extension bracket on the second bogie 53 is rotated to support the sub-tabletop. After the dinner party is completed, the corresponding tabletop extension bracket is continuously or reversely rotated to rotate the tabletop extension bracket to the diagonal line below the main tabletop and fixedly arranged, and the two groups of sub-tabletops are respectively retracted into the main tabletop.

[0043] Although the disclosure is as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A retractable outdoor dining table, characterized in that: The desktop setting frame (5) comprises a normal temperature main desktop (1), a high temperature resistant main desktop (2) and a desktop setting frame (5), wherein the normal temperature main desktop (1) is provided at the upper left of the desktop setting frame (5), the normal temperature auxiliary desktop (3) is provided at the left end of the inner cavity of the normal temperature main desktop (1), the high temperature resistant main desktop (2) is provided at the right side of the normal temperature main desktop (1), the high temperature resistant auxiliary desktop (4) is provided at the right end of the inner cavity of the high temperature resistant main desktop (2), the desktop setting frame (5) is provided with anti-slipping fixing seats (9) at the four corners of the bottom, the anti-slipping fixing seats (9) are provided with adjusting support frames (6), the inner cavity of the adjusting support frames (6) are provided with table legs (7), and the bottoms of the table legs (7) are provided with mounting brackets (8); Wherein, a fixed tabletop (51) is provided on the panel of the tabletop setting frame (5), a first bogie (52) is provided at the left end of the fixed tabletop (51), and a second bogie (53) is provided at the right end of the fixed tabletop (51); The first bogie (52) has a fixed column (521) at the bottom, a boss (522) at the top of the fixed column (521), a mounting frame (523) at the center of the boss (522), a desktop setting buffer frame (524) at the top of the mounting frame (523), the desktop setting buffer frame (524) is arranged in the bottom panel of the main desktop (1) at normal temperature, four groups of plug interfaces are evenly arranged on the edge of the mounting frame (523), three groups of plug interfaces are provided with desktop main brackets (525), the other group of plug interfaces is provided with a desktop extension bracket (526), ​​a limiting nut (527) is provided at the bottom of the desktop extension bracket (526), ​​and a limiting stud (528) is provided in the limiting nut (527).

2. A retractable outdoor dining table according to claim 1, characterized in that: A support shaft (5231) is provided in the center of the mounting frame (523), a positioning frame (5232) is provided on the outer ring of the mounting frame (523), a rotating notch frame (5233) is provided on the left side of the positioning frame (5232), an anti-penetration gasket (5235) is provided at the bottom of the inner ring of the positioning frame (5232), and an anti-slip gasket (5234) is provided at the outer end of the support shaft (5231).

3. The retractable outdoor dining table according to claim 1, characterized in that: The first bogie (52) is arranged at the bottom of the normal temperature main desktop (1), the second bogie (53) is arranged symmetrically with the first bogie (52), and the second bogie (53) is arranged at the bottom of the high temperature resistant main desktop (2).

4. The retractable outdoor dining table according to claim 1, characterized in that: The room temperature main table top (1) and the high temperature resistant main table top (2) are symmetrically arranged, a connecting hinge is provided at the connection between the room temperature main table top (1) and the high temperature resistant main table top (2), and a convex strip is provided in the gap between the room temperature main table top (1) and the high temperature resistant main table top (2).

5. The retractable outdoor dining table according to claim 1, characterized in that: The two left corners of the bottom panel of the normal temperature main desktop (1) are respectively provided with limiting grooves (11), and the limiting grooves (11) are respectively provided with snap-on openings (12).

6. The retractable outdoor dining table according to claim 1, characterized in that: The inner wall bottom of the normal temperature main desktop (1) is provided with two sets of sliding frames, the normal temperature auxiliary desktop (3) is provided with two sets of sliding grooves (33) corresponding to the sliding frames, plugs are respectively provided on the right sides of the sliding grooves (33), and a first handle is provided on the outer end wall plate of the normal temperature auxiliary desktop (3).

7. The retractable outdoor dining table according to claim 1, characterized in that: The normal temperature auxiliary desktop (3) extends out of the bottom of the panel and is provided with a slide rail (31), and a clamping hole (32) is provided in the center of the slide rail (31).

8. The retractable outdoor dining table according to claim 1, characterized in that: The mounting bracket (8) comprises a protective cover shell (81), the inner cavity of the protective cover shell (81) is provided with a moisture-proof cavity (82), the bottom of the moisture-proof cavity (82) is provided with a mounting plate (83), and the mounting plate (83) is provided with a plurality of sets of positioning bolts (84).

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