Dish weighing all-in-one machine with adjustable display screen

Abstract

The utility model relates to the technical field of electronic weighing equipment, and discloses a dish weighing all-in-one machine with an adjustable display screen, which comprises a base, a weighing mechanism is arranged on the base, one side of the base is fixedly connected with a telescopic supporting piece, one end, far away from the base, of the telescopic supporting piece is connected with the display screen, and an adjusting assembly is arranged between the telescopic supporting piece and the display screen. The adjusting assembly comprises a first adjusting piece, a second adjusting piece and a third adjusting piece which are hinged to one another, the first adjusting piece is rotationally connected to the telescopic supporting piece, the third adjusting piece is fixedly connected to the display screen, and locking pieces are arranged at the hinged positions of the second adjusting piece and the first adjusting piece and the third adjusting piece. Through cooperation of the telescopic supporting piece and the adjusting assembly, adjustment of the height and the rotating angle of the display screen is achieved, and a user can conveniently check and use the display screen.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic weighing equipment, in particular to a dish weighing all-in-one machine with adjustable display screen. BACKGROUND

[0002] In some catering, supermarkets, weighing and charging goods will use weighing equipment, and with the development of science and technology and society, the weighing all-in-one machine is widely used, which can weigh the goods and calculate the consumption amount required by the goods, and also has other functions such as printing consumer receipts for customers.

[0003] At present, the display screen of the existing weighing all-in-one machine is usually installed in a fixed way, and the placement direction of the weighing all-in-one machine is relatively limited, and the display screen cannot be adjusted according to the actual placement environment, resulting in poor applicability of the weighing all-in-one machine and poor user experience. SUMMARY

[0004] In order to improve the problem that the display screen of the existing weighing all-in-one machine cannot be adjusted according to the actual situation, resulting in poor applicability of the weighing all-in-one machine, the present application provides a dish weighing all-in-one machine with adjustable display screen.

[0005] The dish weighing all-in-one machine with adjustable display screen provided by the present application adopts the following technical solution:

[0006] A dish weighing all-in-one machine with adjustable display screen, comprising a base, a weighing mechanism is arranged on the base, a telescopic support is fixedly connected to one side of the base, a display screen is connected to one end of the telescopic support away from the base, an adjusting assembly is arranged between the telescopic support and the display screen, the adjusting assembly comprises first, second and third adjusting members that are hingedly connected to each other, the rotation directions between the first and second adjusting members and between the second and third adjusting members are perpendicular to each other, the first adjusting member is rotationally connected to the telescopic support, the third adjusting member is fixedly connected to the display screen, and a locking member is slidably connected to the hinged connection between the second adjusting member and the first and third adjusting members.

[0007] By adopting the above technical solution, the telescopic support is arranged on one side of the base to adjust the height of the display screen, the first, second and third adjusting members are used to realize three-axis linkage, the rotation angle of the display screen is adjusted, the display screen can be adjusted according to the specific installation place of the weighing all-in-one machine, the adaptive range of the weighing display is increased, and the positions of the first, second and third adjusting members after rotation are fixed by the locking member to ensure the stability of the display screen.

[0008] Optionally, the locking member comprises a rotating shaft, one end of the rotating shaft is provided with a traction part, the other end of the rotating shaft is provided with an end head, the outer peripheral wall of the rod body near one end of the traction part is provided with a limiting tooth, the first adjusting member and the second adjusting member are both provided with a first tooth groove matched with the limiting tooth at the hinged position, the first adjusting member and the second adjusting member are both provided with a second tooth groove matched with the limiting tooth, the rotating shaft is sleeved with a first elastic member at one end near the end head, and the two ends of the first elastic member are respectively abutted against the inner side of the end head and the surface of the second adjusting member.

[0009] By adopting the above technical scheme, in use, the rotating shaft is slid by pulling the traction part or pressing the end head, the first elastic member is compressed under the action of the end head, the elastic potential energy is increased, the limiting tooth is separated from the second tooth groove, the rotating angle of the display screen is adjusted by rotating the second adjusting member or the third adjusting member, the traction part or the end head is released, the elastic potential energy of the first elastic member is released, the rotating shaft is driven to move, the limiting tooth is clamped in the second tooth groove, the rotation of the second adjusting member or the third adjusting member is limited, and the adjustment and fixation of the rotating angle of the display screen are realized.

[0010] Optionally, the telescopic support comprises a sleeve rod and a telescopic rod, the telescopic rod is slidably connected in the sleeve rod, and the connection position of the sleeve rod and the telescopic rod is provided with a sealing sleeve; one end of the sleeve rod is fixedly connected to the side of the base, the side wall of the sleeve rod is provided with an adjusting handle, one end of the adjusting handle is penetrated through and rotationally connected to the side wall of the sleeve rod, and the side wall of the telescopic rod is provided with a first sliding groove through which the adjusting handle is penetrated.

[0011] Optionally, one end of the adjusting handle in the sleeve rod is provided with a gear, the other end of the adjusting handle is provided with a handle head, and the inner side wall of the telescopic rod is fixedly connected with a gear rack matched with the gear.

[0012] Optionally, a limiting rod is slidably connected to the side wall of the sleeve rod, the side wall of the telescopic rod is provided with a second sliding groove through which the limiting rod is penetrated, and a second elastic member is arranged between the limiting rod and the side wall of the sleeve rod, wherein the second elastic member enables the limiting rod to be clamped in the tooth groove of the gear.

[0013] By adopting the above technical scheme, the telescopic rod is slidably connected in the sleeve rod, the gear is driven to rotate by rotating the adjusting handle, the gear is matched with the gear rack to drive the telescopic rod to move, the height of the display screen is adjusted, and the rotation of the gear is limited by clamping the limiting rod in the tooth groove of the gear.

[0014] Optionally, the telescopic rod is provided with a mounting hole near one end of the first adjusting piece, and an elastic limiting piece is fixedly connected to the inner wall of the mounting hole; the first adjusting piece is provided with a connecting shaft, and the connecting shaft is rotatably connected to the mounting hole; a plurality of limiting grooves are arranged on the connecting shaft in the circumferential direction of the connecting shaft, and the elastic limiting piece is clamped in the limiting grooves.

[0015] By adopting the above technical scheme, the first adjusting piece is rotatably connected to the telescopic rod, the angle of the display screen is adjusted by rotating the first adjusting piece, and the rotation of the first adjusting piece is limited by clamping the elastic limiting piece in the limiting grooves at different positions, so that the stability of the display screen after rotation is ensured.

[0016] Optionally, the weighing mechanism comprises a weighing sensor, and the base is provided with a mounting groove; the weighing sensor is fixedly connected to the mounting groove; a supporting plate is connected to the detection end of the weighing sensor; a tray is connected to the supporting plate; and a buffer pad is arranged between the supporting plate and the tray.

[0017] By adopting the above technical scheme, the weighing sensor is installed in the fixed groove, the gap between the tray and the base is reduced, the convex edge is arranged on the base, and the flange on the tray is covered outside the convex edge, so that the entry of dust or water stains is reduced, the normal use of the weighing mechanism is ensured, the stability of the tray installation is improved by arranging the supporting plate, and the impact force on the weighing sensor is reduced by arranging the buffer pad between the supporting plate and the tray, so that the accuracy of the weighing sensor is not affected.

[0018] Optionally, a dustproof plate is arranged below the display screen and fixed to the telescopic support; a camera for identifying dishes is arranged below the dustproof plate and faces the tray.

[0019] By adopting the above technical scheme, the dustproof plate can block the falling dust and the spittle generated when the user speaks, so as to avoid the pollution of the dishes; the camera is arranged below the dustproof plate, the dishes are quickly identified, the price of the dishes is known, and the efficiency of settlement is improved.

[0020] Optionally, the display screen comprises a shell, a liquid crystal display is installed on the shell, and a face recognition area, a code scanning area and a card swiping area are arranged on one side of the liquid crystal display.

[0021] By adopting the above technical scheme, the dish and dish price information are displayed on the liquid crystal display, and multiple payment methods are realized through the face recognition area, the code scanning area and the card swiping area, so as to save the settlement time.

[0022] Optionally, the bottom of the base is provided with a plurality of supporting legs, one end of the supporting leg is fixedly connected with a connecting rod, the bottom of the base is provided with a connecting seat, and the connecting rod is threadedly connected to the connecting seat.

[0023] By adopting the above technical scheme, the connecting rod is threadedly connected to the connecting seat, and the horizontality of the base is ensured by rotating the supporting leg.

[0024] To sum up, the present application has at least one of the following beneficial technical effects:

[0025] 1. The height of the display screen is adjusted by the telescopic supporting member, the three-axis linkage is realized by the first adjusting member, the second adjusting member and the third adjusting member, the adjustment of the rotation angle of the display screen is realized, the user can conveniently view and use the display screen, and the stability of the display screen is ensured by the locking member.

[0026] 2. The weighing sensor is installed in the fixing groove, the gap between the tray and the base is reduced, the convex edge is arranged on the base, the flange cover on the tray is arranged outside the convex edge, the entry of dust or water stains is reduced, and the normal use of the weighing mechanism is ensured; the stability of the tray installation is increased by arranging the supporting plate, and the buffer pad is arranged between the weighing tray and the tray, the buffer pad can absorb the impact force generated when the dishes are placed, so that the impact force on the weighing sensor is reduced, and the accuracy of the weighing sensor is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic view of the dish weighing and display screen adjusting all-in-one machine.

[0028] Figure 2 is a left view of the dish weighing and display screen adjusting all-in-one machine.

[0029] Figure 3 is an exploded view of the adjusting assembly.

[0030] Figure 4 is Figure 2 A-A sectional view in FIG.

[0031] Figure 5 is a sectional view of the dish weighing and display screen adjusting all-in-one machine.

[0032] Figure 6 is Figure 4 a magnified view of part B in FIG.

[0033] Figure 7 is Figure 4 a magnified view of part C in FIG.

[0034] Labels: 1, base; 11, mounting groove; 12, convex edge; 13, connecting seat; 2, weighing mechanism; 21, weighing sensor; 22, supporting plate; 23, tray; 231, flange; 24, buffer pad; 3, dustproof plate; 4, camera; 5, telescopic support; 51, sleeve rod; 52, telescopic rod; 521, rack; 522, first sliding groove; 523, mounting hole; 524, elastic limiting piece; 525, second sliding groove; 53, adjusting handle; 531, handle head; 532, gear; 54, limiting rod; 55, second elastic piece; 56, sealing sleeve; 6, adjusting assembly; 61, first adjusting piece; 611, second tooth groove; 613, connecting shaft; 6131, limiting groove; 62, second adjusting piece; 621, first tooth groove; 63, third adjusting piece; 64, locking piece; 641, rotating shaft; 642, traction part; 643, end head; 644, limiting tooth; 645, first elastic piece; 7, display screen; 71, casing; 72, liquid crystal display; 73, face recognition area; 74, code scanning area; 75, card swiping area; 8, supporting leg; 81, connecting rod. DETAILED DESCRIPTION

[0035] The embodiments of the present application are described below in detail, examples of which are shown in the drawings.

[0036] In the description of the present specification, the description of the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the described embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The embodiment of the present application discloses a dish weighing all-in-one machine with adjustable display screen, referring to Figures 1 to 3, including base 1, base 1 is provided with weighing mechanism 2, the side of base 1 is fixedly connected with telescopic support 5, the end away from base 1 of telescopic support 5 is connected with display screen 7, adjusting assembly 6 is arranged between telescopic support 5 and display screen 7, adjusting assembly 6 includes first adjusting part 61, second adjusting part 62 and third adjusting part 63 that are hingedly connected with each other, and the rotating direction between first adjusting part 61 and second adjusting part 62 is perpendicular to the rotating direction between second adjusting part 62 and third adjusting part 63, both ends of second adjusting part 62 are Y-shaped structure, first adjusting part 61 is rotatably connected to telescopic support 5, third adjusting part 63 is fixedly connected to display screen 7, locking piece 64 is slidably connected and penetrates the hinged places of second adjusting part 62 with first adjusting part 61 and third adjusting part 63.

[0038] Referring to Figure 3 , locking piece 64 includes rotating shaft 641, one end of rotating shaft 641 is provided with traction part 642, the other end of rotating shaft 641 is provided with end head 643, the outer peripheral wall of the end of rod body close to traction part 642 is provided with limiting teeth 644, one side of the hinged place of second adjusting part 62 with first adjusting part 61 or second adjusting part 62 is provided with first tooth groove 621 matched with limiting teeth 644, first adjusting part 61 or second adjusting part 62 is provided with second tooth groove 611 matched with limiting teeth 644, the end close to end head 643 of rotating shaft 641 is sleeved with first elastic piece 645, both ends of first elastic piece 645 abut on the inner side of end head 643 and the surface of second adjusting part 62 respectively.

[0039] Referring to Figure 4 And Figure 5 , telescopic support 5 includes sleeve rod 51 and telescopic rod 52, sleeve rod 51 and telescopic rod 52 are both hollow tubular structure, telescopic rod 52 is slidably connected in sleeve rod 51, sealing sleeve 56 is arranged at the connecting place of sleeve rod 51 and telescopic rod 52, sealing sleeve 56 is fixed at the end of sleeve rod 51, the inner side of sealing sleeve 56 abuts on the outer side wall of telescopic rod 52; one end of sleeve rod 51 is fixedly connected to the side of base 1, adjusting handle 53 is arranged on the side wall of sleeve rod 51, one end of adjusting handle 53 penetrates and is rotatably connected to the side wall of sleeve rod 51, first sliding groove 522 is arranged on the side wall of telescopic rod 52, which can be passed through by adjusting handle 53, gear 532 is arranged on the end of adjusting handle 53 in sleeve rod 51, handle head 531 is arranged on the other end of adjusting handle 53, rack 521 is fixedly connected to the inner side wall of telescopic rod 52 and matched with gear 532, in use, by rotating adjusting handle 53, gear 532 is driven to rotate, gear 532 is matched with rack 521, and the movement of telescopic rod 52 is driven, so that the height of display screen 7 is adjusted; referring to Figure 7The side wall of the sleeve rod 51 is slidably connected with a limiting rod 54, a second sliding groove 525 is formed in the side wall of the telescopic rod 52 and can be penetrated by the limiting rod 54, and the second elastic member 55 is arranged between the side wall of the sleeve rod 51 and the limiting rod 54, wherein the second elastic member 55 enables the limiting rod 54 to be clamped in the tooth groove of the gear 532 and restricts the rotation of the gear 532.

[0040] With reference to Figure 4 And Figure 6 An installation hole 523 is formed in one end of the telescopic rod 52 close to the first adjusting member 61, the elastic limiting member 524 is fixedly connected to the inner wall of the installation hole 523 and is a spring sheet, the connecting shaft 613 is arranged on the first adjusting member 61 and is rotatably connected to the installation hole 523, a plurality of limiting grooves 6131 are equidistantly formed in the circumferential direction of the connecting shaft 613, and one end of the elastic limiting member 524 away from the inner wall of the installation hole 523 is clamped in the limiting groove 6131.

[0041] In use, the elastic limiting member 524 is clamped in the limiting groove 6131 at different positions by rotating the first adjusting member 61, so that the first adjusting member 61 is in a static state when not subjected to external force, thereby ensuring the stability of the display screen 7 after rotation.

[0042] With reference to Figure 5 The weighing mechanism 2 comprises a weighing sensor 21, the base 1 is provided with an installation groove 11, the weighing sensor 21 is fixedly connected to the installation groove 11, the detection end of the weighing sensor 21 is connected with a supporting plate 22, the supporting plate 22 is connected with a tray 23, and a buffer pad 24 is arranged between the supporting plate 22 and the tray 23. The buffer pad 24 can absorb the impact force generated when the dishes are placed, thereby reducing the impact force on the weighing sensor 21 and avoiding affecting the accuracy of the weighing sensor 21; the base 1 is provided with a convex edge 12, the periphery of the side of the tray 23 close to the base 1 is provided with a turned edge 231, the turned edge 231 is covered outside the convex edge 12, the gap between the tray 23 and the base 1 is reduced, the entry of dust or water stains is reduced, and the normal use of the weighing mechanism 2 is ensured.

[0043] With reference to Figure 1 A dustproof plate 3 fixed on the telescopic supporting member 5 is arranged below the display screen 7, the dustproof plate 3 is made of transparent acrylic plate, the dustproof plate 3 can block the falling dust and the spittle generated when the user speaks, and avoid the dishes from being contaminated; a camera 4 for identifying dishes is arranged below the dustproof plate 3, and the camera 4 faces the tray 23. The dishes are quickly identified by the camera 4, the price of the dishes is known according to the weighing, and the efficiency of settlement is improved.

[0044] The display screen 7 comprises a casing 71, a liquid crystal display 72 is installed on the casing 71 and used for displaying dishes and dish price information; a human face recognition area 73, a code scanning area 74 and a card swiping area 75 are arranged on one side of the liquid crystal display 72, so that various payment modes are realized and settlement time is saved.

[0045] A plurality of supporting legs 8 are installed on the bottom of the base 1, one end of each supporting leg 8 is fixedly connected with a connecting rod 81, a connecting seat 13 is arranged on the bottom of the base 1, and the connecting rod 81 is screwed to the connecting seat 13, so that the horizontal level of the base 1 is ensured by rotating the supporting legs 8.

[0046] The implementation principle of the dish weighing all-in-one machine with adjustable display screen is as follows: first, the weighing all-in-one machine is placed in a placement place, and the horizontal level of the base 1 is adjusted by rotating the supporting legs 8; then, the limiting rod 54 is pulled outward, the second elastic member 55 is compressed, the end of the limiting rod 54 is separated from the gear 532, the gear 532 is rotated by rotating the adjusting handle 53, the gear 532 cooperates with the rack 521, so that the telescopic rod 52 moves in the sleeve rod 51 to a specified height, the limiting rod 54 is released, the end of the limiting rod 54 is clamped into the tooth groove of the gear 532 under the action of the second elastic member 55, the rotation of the gear 532 is limited, and the telescopic rod 52 is fixed, so that the height of the display screen 7 is adjusted.

[0047] In use, the display screen 7 is directly horizontally rotated, so that the first adjusting member 61 is rotated, and the elastic limiting member 524 is clamped in the limiting groove 6131 at different positions, so that the first adjusting member 61 is in a static state when it is not subjected to external force, the stability of the display screen 7 after rotation is ensured, and the horizontal rotation of the display screen 7 is realized; the rotation shaft 641 is slid by pulling the traction part 642 or pressing the end head 643, the first elastic member 645 is compressed under the action force of the end head 643, the limiting tooth 644 is separated from the second tooth groove 611 at this time, the rotation angle of the display screen 7 is adjusted by rotating the second adjusting member 62 or the third adjusting member 63; then, the traction part 642 or the end head 643 is released, the rotation shaft 641 is reversely moved under the action of the first elastic member 645, so that the limiting tooth 644 is clamped in the second tooth groove 611, the rotation of the second adjusting member 62 or the third adjusting member 63 is limited, the angle of the display screen 7 is adjusted and fixed. The height and rotation angle of the display screen 7 are adjusted by cooperation of the telescopic supporting member 5 and the adjusting assembly 6, so that the user can conveniently view and use the display screen 7.

[0048] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A dish weighing and display screen adjusting all-in-one machine, characterized in that, The utility model provides a kind of scale, including base (1), the weighing mechanism (2) is provided on the base (1), the side of the base (1) is fixedly connected with telescopic support (5), the end of telescopic support (5) away from base (1) is connected with display screen (7), adjusting assembly (6) is provided between telescopic support (5) and display screen (7), the adjusting assembly (6) includes mutually hinged first adjusting part (61), second adjusting part (62) and third adjusting part (63), the first adjusting part (61) is rotatably connected on telescopic support (5), the third adjusting part (63) is fixedly connected on display screen (7), the second adjusting part (62) is hinged with first adjusting part (61) and third adjusting part (63) and is penetrated and slidably connected with locking piece (64).

2. The adjustable display screen dish weighing all-in-one machine according to claim 1, characterized in that, The locking piece (64) includes a rotating shaft (641), one end of the rotating shaft (641) is provided with a traction part (642), the other end of the rotating shaft (641) is provided with an end (643), the outer peripheral wall of the rotating shaft (641) close to the end of the traction part (642) is provided with a limiting tooth (644), the hinged place of the second adjusting part (62) and the first adjusting part (61) or the third adjusting part (63) is provided with a first tooth groove (621) matched with the limiting tooth (644), the first adjusting part (61) or the third adjusting part (63) is provided with a second tooth groove (611) matched with the limiting tooth (644), the end of the rotating shaft (641) close to the end (643) is provided with a first elastic element (645), the two ends of the first elastic element (645) are respectively abutted to the inner side of the end (643) and the surface of the second adjusting part (62).

3. The adjustable display screen dish weighing all-in-one machine according to claim 1, characterized in that, The telescopic support (5) includes a sleeve rod (51) and a telescopic rod (52), the telescopic rod (52) is slidably connected in the sleeve rod (51), and the connecting part of the sleeve rod (51) and the telescopic rod (52) is provided with a sealing sleeve (56); one end of the sleeve rod (51) is fixedly connected to the side of the base (1), the side wall of the sleeve rod (51) is provided with an adjusting handle (53), one end of the adjusting handle (53) penetrates and is rotatably connected to the side wall of the sleeve rod (51), and the side wall of the telescopic rod (52) is provided with a first sliding groove (522) for the adjusting handle (53) to pass through, and the adjusting handle (53) is in transmission connection with the telescopic rod (52).

4. The adjustable display screen dish weighing all-in-one machine according to claim 3, characterized in that, The end of the adjusting handle (53) located in the sleeve rod (51) is provided with a gear (532), the other end of the adjusting handle (53) is provided with a handle head (531), and the inner side wall of the telescopic rod (52) is fixedly connected with a gear rack (521) matched with the gear (532).

5. The adjustable display screen dish weighing all-in-one machine according to claim 4, characterized in that, The side wall of the sleeve rod (51) is slidably connected with a limiting rod (54), the side wall of the telescopic rod (52) is provided with a second sliding groove (525) for the limiting rod (54) to pass through, and the second elastic element (55) is arranged between the side wall of the sleeve rod (51) and the limiting rod (54), so that the limiting rod (54) is clamped in the gear slot of the gear (532).

6. The adjustable display screen dish weighing all-in-one machine according to claim 3, characterized in that, The telescopic rod (52) is provided with a mounting hole (523) at one end close to the first adjusting part (61), the inner wall of the mounting hole (523) is fixedly connected with an elastic limiting part (524), the first adjusting part (61) is provided with a connecting shaft (613), the connecting shaft (613) is rotatably connected in the mounting hole (523), a plurality of limiting grooves (6131) are arranged on the connecting shaft (613) in the circumferential direction, and the elastic limiting part (524) is clamped in the limiting groove (6131).

7. The adjustable display screen dish weighing all-in-one machine according to claim 1, characterized in that, The weighing mechanism (2) comprises a weighing sensor (21), the base (1) is provided with a mounting groove (11), the weighing sensor (21) is fixedly connected in the mounting groove (11), the detection end of the weighing sensor (21) is connected with a supporting plate (22), the supporting plate (22) is connected with a tray (23), and a buffer pad (24) is arranged between the supporting plate (22) and the tray (23); the base (1) is provided with a convex edge (12), the periphery of the side, close to the base (1), of the tray (23) is provided with a turned edge (231), and the turned edge (231) covers the outside of the convex edge (12).

8. The adjustable display screen dish weighing all-in-one machine according to claim 5, characterized in that, A dustproof plate (3) fixed on the telescopic support (5) is arranged below the display screen (7), a camera (4) for identifying dishes is arranged below the dustproof plate (3), and the camera (4) faces the tray (23).

9. The adjustable display screen dish weighing all-in-one machine according to claim 1, characterized in that, The display screen (7) comprises a shell (71), a liquid crystal display (72) is mounted on the shell (71), a face recognition area (73), a code scanning area (74) and a card swiping area (75) are arranged on one side of the shell (71) and located at the liquid crystal display (72).

10. The adjustable display screen dish weighing all-in-one machine according to claim 1, characterized in that, A plurality of supporting legs (8) are arranged at the bottom of the base (1), one end of each supporting leg (8) is fixedly connected with a connecting rod (81), the bottom of the base (1) is provided with a connecting seat (13), and the connecting rod (81) is threadedly connected with the connecting seat (13).

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