CN211471763U - Conical device for weaving elastic net - Google Patents

Abstract

The utility model discloses a toper device for elastic net is woven, including base, lift unit and weaving unit, the base: the upside middle part of base is equipped with the erection column, the upside of erection column is fixed with first rotation post, first draw-in groove has been seted up respectively at both ends around the side of first rotation post, the side-mounting of first rotation post has the net post of receipts, and receive the inboard fixture block joint of net post in first draw-in groove, the even array distribution in side of receiving the net post has the traveller, the second draw-in groove has been seted up respectively to the upper end of both sides around receiving the net post, the bottom side of erection column is equipped with the second gear, the front side on base surface is fixed with the motor, the output shaft of motor is fixed with the third gear, third gear and second gear meshing, the right side on base surface is fixed with first fixed plate, the upside of first fixed plate is equipped with the second fixed plate, this a cone device for elastic net weaves, and easy operation, conveniently get the receipts material cylinder and put.

Description

Conical device for weaving elastic net

Technical Field

The utility model relates to a protection network weaving equipment technical field specifically is a toper device for elasticity net is woven.

Background

The elastic protective net is a net which is arranged under or on the side of the elastic protective net and plays a role in protection when high-altitude building construction equipment is installed or skill performance is performed, so that accidents caused by falling of people or objects are prevented. The safety protection net is composed of a net body, side ropes, a tying rope and a reinforcing rope; the net body is formed by knitting net ropes and has a rhombic or square mesh, and the mesh size refers to the distance between two adjacent knots of a knitted article; the device is woven to current elasticity protection network degree of automation is not high greatly, needs many people to operate, not only extravagant manpower resources, and work efficiency is not high yet, and current elasticity protection network weaving device utilizes the cylinder to receive the material greatly moreover, receives the material to accomplish the back because weight is big to lead to inconvenient taking off.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a toper device for elastic net is woven, easy operation, convenience are got to receiving the material cylinder and are put, work efficiency is high, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a conical device for weaving an elastic net comprises a base, a lifting unit and a weaving unit;

base: the middle part of the upper side of the base is provided with an installation column, the upper side of the installation column is fixed with a first rotating column, the front end and the rear end of the side surface of the first rotating column are respectively provided with a first clamping groove, the side surface of the first rotating column is provided with a net collecting column, a clamping block at the inner side of the net collecting column is clamped in the first clamping groove, the side surface of the net collecting column is uniformly distributed with anti-skid columns in an array manner, the upper ends of the front side and the rear side of the net collecting column are respectively provided with a second clamping groove, the bottom side of the installation column is provided with a second gear, the front side of the surface of the base is fixed with a motor, an output shaft of the motor is fixed with a third gear, the third gear is meshed with the second gear, the right side of the surface of the base is fixed with a first fixing plate, the upper side of the first fixing plate is provided with a second fixing, the sliding rail penetrates through the top end of the through groove, a second rotating column is rotatably connected to the left side of the surface of the base, a second tooth groove is formed in the side face of the second rotating column, a second servo motor is fixed to the left side of the surface of the base, a fourth gear is arranged on an output shaft of the second servo motor, and gear teeth on the peripheral side of the fourth gear are meshed in the second tooth groove;

a spinning unit: the weaving units are positioned at the left side and the right side of the first fixing plate;

a lifting unit: the lifting unit comprises a first fixing rod, a hydraulic cylinder, a U-shaped fixing rod, a telescopic column and a clamping block, one end of the first fixing rod is fixed at the upper end of the second rotating column, the hydraulic cylinder is arranged at the bottom side of the other end of the first fixing rod, the U-shaped fixing rod is fixed at the telescopic end of the hydraulic cylinder, one end of the telescopic column is respectively fixed at the inner side of the vertical end of the U-shaped fixing rod, the clamping block is respectively arranged at the other end of the telescopic column, and the clamping block is matched and clamped with the second clamping groove;

the motor drives the third gear to rotate, so that the first rotating column is driven to rotate, the net collecting column is driven to rotate, the elastic net is wound on the side face of the net collecting column through the rotation of the net collecting column, when the elastic net is collected on the side face of the net collecting column, the pressure in the hydraulic cylinder is increased, so that the telescopic end of the hydraulic cylinder moves downwards, the U-shaped fixing rod, the telescopic column and the clamping block are driven to move downwards together until the clamping block is clamped in the second clamping groove, the pressure in the hydraulic cylinder is reduced, so that the U-shaped fixing rod drives the net collecting column to move upwards, the net collecting column is far away from the mounting column, the second servo motor drives the fourth gear to rotate, so that the second rotating column is driven to rotate until the net collecting column reaches a proper position, the net collecting column is placed at a specified position through controlling the hydraulic cylinder, the operation is simple, and the net;

the automatic feeding device is characterized by further comprising a single chip microcomputer, wherein the single chip microcomputer is arranged on the front side of the surface of the base, the output end of an external power supply is electrically connected with the input end of the single chip microcomputer, the output end of the single chip microcomputer is electrically connected with the input ends of the motor, the second servo motor and the hydraulic cylinder, and the single chip microcomputer controls the opening and closing of the motor, the second servo motor and the hydraulic cylinder.

Further, the spinning unit comprises a movable rod, a first tooth space, a second fixed rod, a fixed column, a filament supplying column, a first fixed block, a first servo motor and a first gear, the first fixed block is fixed on the right side of the first fixed plate, the first servo motor is arranged on the upper side of the first fixed block, an output shaft of the first servo motor penetrates through the left side of the first fixed plate, the first gear is fixed on the output shaft of the first servo motor, the movable rod is connected in a sliding groove in the side face of the sliding rail in a sliding manner, the first tooth space is formed in the inner side of the movable rod, gear teeth on the side face of the first gear are meshed in the first tooth space, six second fixed rods are fixed on the left side of the movable rod, the fixed column is fixed at the left end of the upper side of the second fixed rod respectively, the filament supplying column is connected on the side face of the fixed column in a rotating manner, the input end of, the left end of the second fixed rod is respectively fixed with a third fixed rod, the front end of the upper side of the third fixed rod is respectively provided with a second fixed block, the upper side of the second fixed block is provided with a conical lead block, one end of an elastic wire penetrates through the conical lead block respectively and is fixed on the side surface of the antiskid column, the elastic wire is pulled through rotation of the net collecting column, the first servo motor drives the first gear to rotate, so that the movable rod is driven to move up and down in a sliding groove on the side surface of the sliding rail, the second fixed rod, the fixed column and the wire supply column are driven to move up and down together, the two movable rods move oppositely by controlling the first servo motor, so that the wire supply columns move oppositely, the elastic net is wound, the operation is easier than that in a traditional winding method, the time is saved, and the working efficiency is improved.

Further, still include the mounting panel, the side of erection column is equipped with the mounting panel, and the mounting panel is located the upside of second gear, and the upside of mounting panel and the bottom side contact of receipts net post, and the mounting panel is used for supporting receipts net post.

Furthermore, the device also comprises a U-shaped fixing frame, wherein the U-shaped fixing frame is fixed on the upper side of the second fixing plate, the upper end of the sliding rail is fixed on the bottom side of the horizontal end of the U-shaped fixing frame, and the U-shaped fixing frame is used for limiting the moving position of the movable rod.

Furthermore, the elastic net weaving device further comprises supporting legs and anti-slip pads, wherein the four supporting legs are fixed on the bottom sides of the base respectively, the anti-slip pads are arranged on the bottom sides of the supporting legs respectively, the supporting legs are used for supporting the whole device, and the anti-slip pads can reduce vibration generated in the elastic net weaving process.

Compared with the prior art, the beneficial effects of the utility model are that: the conical device for weaving the elastic net has the following advantages:

1. the motor drives the third gear, thereby drive first rotation post and rotate, thereby it rotates to drive receipts net post, rotate through receiving the net post, make the winding of elastic network in the side of receiving the net post, collect when the elastic network after receiving net post side, the pressure increase in the pneumatic cylinder, thereby make the flexible end downwardly moving of pneumatic cylinder, thereby drive U type dead lever, flexible post and fixture block common downwardly moving, until the fixture block joint in the second draw-in groove, pneumatic cylinder internal pressure reduces, thereby make U type dead lever area receive net post rebound, thereby make and receive the net post and keep away from the erection column, second servo motor drives fourth gear revolve, thereby it rotates to drive the second rotation post, until receiving the net post and reacing the suitable position, will receive the net post and put at the assigned position through the control pneumatic cylinder, and is simple in operation, be convenient for getting and putting the receipts net post.

2. Pass the toper lead wire piece respectively with the one end of elastic wire, and fix the elastic wire in the side of non slipping spur, rotate through receiving the net post and pull the elastic wire, first servo motor drives first gear revolve, thereby it reciprocates in the spout of slide rail side to drive the movable rod, thereby drive the second dead lever, the fixed column reciprocates with supplying the silk post jointly, make two movable rods remove in opposite directions through controlling first servo motor, thereby make and supply the silk post to remove in opposite directions, thereby twine the elastic wire, change the operation than traditional wind device, and more save time, thereby work efficiency has been improved.

3. The mounting panel is used for supporting and receives the net post, and U type mount is used for restricting the shift position of movable rod, and the landing leg is used for supporting whole device, and the slipmat can reduce the vibration that the elasticity net weaves the in-process and produce.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the enlarged structure of the part A of the present invention;

fig. 3 is a schematic diagram of the local enlarged structure at the position B of the present invention.

In the figure: the device comprises a base 1, a singlechip 2, a lifting unit 3, a first fixing rod 31, a hydraulic cylinder 32, a 33U-shaped fixing rod 34, a telescopic column 34, a clamping block 35, a spinning unit 4, a movable rod 41, a first tooth space 42, a second fixing rod 43, a fixed column 44, a wire supply column 45, a first fixing block 46, a first servo motor 47, a first gear 48, a mounting column 5, a first rotating column 6, a first clamping groove 7, a net collecting column 8, a non-slip column 9, a second clamping groove 10, a second gear 11, a motor 12, a third gear 13, a first fixing plate 14, a second fixing plate 15, a through groove 16, a sliding rail 17, a second rotating column 18, a second tooth space 19, a second servo motor 20, a fourth gear 21, a third fixing rod 22, a second fixing block 23, a conical lead block 24, a supporting leg 25, a non-slip pad 26, a fixed frame 27U-shaped structure and a mounting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a conical device for elastic net weaving comprises a base 1, a lifting unit 3 and a weaving unit 4;

base 1: the middle part of the upper side of the base 1 is provided with a mounting column 5, the upper side of the mounting column 5 is fixed with a first rotating column 6, the front end and the rear end of the side surface of the first rotating column 6 are respectively provided with a first clamping groove 7, the side surface of the first rotating column 6 is provided with a net collecting column 8, a clamping block at the inner side of the net collecting column 8 is clamped in the first clamping groove 7, the side surface of the net collecting column 8 is uniformly distributed with anti-skid columns 9 in an array manner, the upper ends of the front side and the rear side of the net collecting column 8 are respectively provided with a second clamping groove 10, the bottom side of the mounting column 5 is provided with a second gear 11, the front side of the surface of the base 1 is fixed with a motor 12, the output shaft of the motor 12 is fixed with a third gear 13, the third gear 13 is meshed with the second gear 11, the right side of the surface of the base 1 is fixed with a first fixing plate 14, the upper side of the first fixing, and the slide rail 17 passes through the top end of the through groove 16, the left side of the surface of the base 1 is rotatably connected with a second rotating column 18, the side surface of the second rotating column 18 is provided with a second gear groove 19, the left side of the surface of the base 1 is fixed with a second servo motor 20, the output shaft of the second servo motor 20 is provided with a fourth gear 21, and the gear teeth on the peripheral side of the fourth gear 21 are engaged in the second gear groove 19, and the mounting plate 28 is arranged on the side surface of the mounting column 5, the mounting plate 28 is located on the upper side of the second gear 11, the upper side of the mounting plate 28 is in contact with the bottom side of the net collecting column 8, the mounting plate 28 is used for supporting the net collecting column 8, the net collecting device further comprises supporting legs 25 and anti-slip pads 26, the four supporting legs 25 are respectively fixed on the bottom side of the base 1, the anti-slip pads 26 are respectively arranged on the bottom sides of the supporting legs 25, the supporting legs 25 are used for supporting the whole device, and the anti-slip pads 26 can reduce vibration generated in the elastic net weaving process;

the spinning unit 4: the spinning unit 4 is located on the left side and the right side of the first fixing plate 14, the spinning unit 4 comprises a movable rod 41, a first tooth groove 42, a second fixing rod 43, a fixing column 44, a yarn supply column 45, a first fixing block 46, a first servo motor 47 and a first gear 48, the first fixing block 46 is fixed on the right side of the first fixing plate 14, the first servo motor 47 is arranged on the upper side of the first fixing block 46, an output shaft of the first servo motor 47 penetrates through the left side of the first fixing plate 14, the first gear 48 is fixed on the output shaft of the first servo motor 47, the movable rod 41 is connected in a sliding groove on the side surface of the sliding rail 17 in a sliding mode, the first tooth groove 42 is formed in the inner side of the movable rod 41, gear teeth on the peripheral side of the first gear 48 are meshed in the first tooth groove 42, the six second fixing rods 43 are fixed on the left side of the movable rod 41, the fixing columns 44 are respectively fixed at the left ends of the upper side, the input end of the first servo motor 47 is electrically connected with the output end of the single chip microcomputer 2, the left end of the second fixed rod 43 is respectively fixed with a third fixed rod 22, the front end of the upper side of the third fixed rod 22 is respectively provided with a second fixed block 23, the upper side of the second fixed block 23 is provided with a conical lead block 24, one end of an elastic wire respectively passes through the conical lead block 24, the elastic wire is dragged by the rotation of the net collecting column 8, the first servo motor 47 drives the first gear 48 to rotate, so as to drive the movable rod 41 to move up and down in the sliding groove on the side surface of the sliding rail 17, so as to drive the second fixed rod 43, the fixed column 44 and the silk supply column 45 to move up and down together, the two movable rods 41 move oppositely by controlling the first servo motor 47, so as to make the silk supply column 45 move oppositely, thereby winding the elastic net, which is easier to operate than the traditional winding method, saves time, the device also comprises a U-shaped fixed frame 27, the U-shaped fixed frame 27 is fixed on the upper side of the second fixed plate 15, the upper end of the slide rail 17 is fixed on the bottom side of the horizontal end of the U-shaped fixed frame 27, and the U-shaped fixed frame 27 is used for limiting the moving position of the movable rod 41;

the lifting unit 3: the lifting unit 3 comprises a first fixing rod 31, a hydraulic cylinder 32, a U-shaped fixing rod 33, a telescopic column 34 and a clamping block 35, one end of the first fixing rod 31 is fixed at the upper end of the second rotating column 18, the hydraulic cylinder 32 is arranged at the bottom side of the other end of the first fixing rod 31, the U-shaped fixing rod 33 is fixed at the telescopic end of the hydraulic cylinder 32, one end of the telescopic column 34 is respectively fixed at the inner side of the vertical end of the U-shaped fixing rod 33, the clamping block 35 is respectively arranged at the other end of the telescopic column 34, the clamping block 35 is in matched clamping connection with the second clamping groove 10, the motor 12 drives the third gear 13 to rotate, so as to drive the first rotating column 6 to rotate, so as to drive the net collecting column 8 to rotate, through the rotation of the net collecting column 8, the elastic net is wound on the side surface of the net collecting column 8, when the elastic net is collected on the side surface of, The telescopic column 34 and the clamping block 35 move downwards together until the clamping block 35 is clamped in the second clamping groove 10, the pressure in the hydraulic cylinder 32 is reduced, so that the U-shaped fixing rod 33 drives the net collecting column 8 to move upwards, the net collecting column 8 is far away from the mounting column 5, the second servo motor 20 drives the fourth gear 21 to rotate, the second rotating column 18 is driven to rotate until the net collecting column 8 reaches a proper position, the net collecting column 8 is placed at a specified position by controlling the hydraulic cylinder 32, the operation is simple, and the net collecting column 8 is convenient to take and place;

the automatic control device is characterized by further comprising a single chip microcomputer 2, the single chip microcomputer 2 is arranged on the front side of the surface of the base 1, the input end of the single chip microcomputer 2 is electrically connected with the output end of an external power supply, the output end of the single chip microcomputer 2 is electrically connected with the input ends of the motor 12, the second servo motor 20 and the hydraulic cylinder 32, and the single chip microcomputer controls the opening and closing of the motor 12, the second servo motor 20 and the hydraulic cylinder 32.

When in use: one end of an elastic wire penetrates through the conical lead blocks 24 respectively, the elastic wire is fixed on the side surface of the antiskid column 9, the single chip microcomputer 2 is opened, the motor 12 drives the third gear 13 to rotate, so as to drive the first rotating column 6 to rotate, so as to drive the net collecting column 8 to rotate, the elastic net is wound on the side surface of the net collecting column 8 through the rotation of the net collecting column 8, the elastic wire is dragged through the rotation of the net collecting column 8, the first servo motor 47 drives the first gear 48 to rotate, so as to drive the movable rods 41 to move up and down in the sliding grooves on the side surfaces of the sliding rails 17, so as to drive the second fixed rod 43, the fixed column 44 and the wire supply column 45 to move up and down together, the two movable rods 41 move oppositely through controlling the first servo motor 47, so as to drive the wire supply columns 45 to move oppositely, so as to wind the elastic net, the operation is easier than the traditional winding method, the time is saved, when the elastic net is collected on the side surface of the net collecting column 8, the pressure in the hydraulic cylinder 32 is increased, so that the telescopic end of the hydraulic cylinder 32 moves downwards, thereby driving the U-shaped fixing rod 33, the telescopic column 34 and the clamping block 35 to move downwards together until the clamping block 35 is clamped in the second clamping groove 10, reducing the pressure in the hydraulic cylinder 32, thereby leading the U-shaped fixed rod 33 to drive the net collecting column 8 to move upwards, leading the net collecting column 8 to be far away from the mounting column 5, leading the second servo motor 20 to drive the fourth gear 21 to rotate, thereby drive the second and rotate post 18 and rotate, reach suitable position until receiving net post 8, will receive net post 8 through control pneumatic cylinder 32 and put at the assigned position, easy operation is convenient for get net post 8 and put, and mounting panel 28 is used for supporting and receives net post 8, and U type mount 27 is used for restricting the shift position of movable rod 41, and landing leg 25 is used for supporting whole device, and slipmat 26 can reduce the vibration that the elastic net weaves the in-process and produce.

It should be noted that the single chip microcomputer 2 disclosed in this embodiment may be an LG GMS90 series single chip microcomputer, the motor 12, the second servo motor 20, the hydraulic cylinder 32, and the first servo motor 47 may be freely configured according to practical application scenarios, the motor 12 may be a motor manufactured by xiamen seiki automation component limited, the specific model is S1500Y38R, preferably, the rotation speed is less than 3000 rpm, the first servo motor 47 and the second servo motor 20 may be a swing servo motor, the specific model is SMG80-M02430, and the single chip microcomputer 2 controls the motor 12, the second servo motor 20, the hydraulic cylinder 32, and the first servo motor 47 to operate by a method commonly used in the prior art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A tapered device for elastic net weaving, characterized in that: comprises a base (1), a lifting unit (3) and a spinning unit (4);

base (1): the middle part of the upper side of the base (1) is provided with a mounting column (5), the upper side of the mounting column (5) is fixed with a first rotating column (6), the front end and the rear end of the side surface of the first rotating column (6) are respectively provided with a first clamping groove (7), the side surface of the first rotating column (6) is provided with a net collecting column (8), a clamping block at the inner side of the net collecting column (8) is clamped in the first clamping groove (7), the side surface of the net collecting column (8) is uniformly distributed with anti-skidding columns (9) in an array manner, the upper ends of the front side and the rear side of the net collecting column (8) are respectively provided with a second clamping groove (10), the bottom side of the mounting column (5) is provided with a second gear (11), the front side of the surface of the base (1) is fixed with a motor (12), an output shaft of the motor (12) is fixed with a third gear (13), and the third gear, the right side of the surface of the base (1) is fixed with a first fixing plate (14), the upper side of the first fixing plate (14) is provided with a second fixing plate (15), the upper side and the lower side of the second fixing plate (15) are provided with two through grooves (16), the right side of the surface of the base (1) is fixed with two sliding rails (17), the sliding rails (17) penetrate through the top ends of the through grooves (16), the left side of the surface of the base (1) is rotatably connected with a second rotating column (18), the side surface of the second rotating column (18) is provided with a second tooth socket (19), the left side of the surface of the base (1) is fixed with a second servo motor (20), an output shaft of the second servo motor (20) is provided with a fourth gear (21), and gear teeth on the peripheral side of the fourth gear (21) are meshed in the second tooth socket (19);

textile unit (4): the weaving units (4) are positioned at the left side and the right side of the first fixing plate (14);

lifting unit (3): the lifting unit (3) comprises a first fixing rod (31), a hydraulic cylinder (32), a U-shaped fixing rod (33), a telescopic column (34) and a clamping block (35), one end of the first fixing rod (31) is fixed to the upper end of the second rotating column (18), the hydraulic cylinder (32) is arranged on the bottom side of the other end of the first fixing rod (31), the U-shaped fixing rod (33) is fixed to the telescopic end of the hydraulic cylinder (32), one end of the telescopic column (34) is fixed to the inner side of the vertical end of the U-shaped fixing rod (33) respectively, the clamping block (35) is arranged at the other end of the telescopic column (34) respectively, and the clamping block (35) is matched and clamped with the second clamping groove (10);

the automatic feeding device is characterized by further comprising a single chip microcomputer (2), wherein the single chip microcomputer (2) is arranged on the front side of the surface of the base (1), the output end of an external power supply is electrically connected with the input end of the single chip microcomputer (2), and the output end of the single chip microcomputer (2) is electrically connected with the input end of the motor (12), the second servo motor (20) and the hydraulic cylinder (32).

2. A tapering device for elastic net weaving, according to claim 1, characterized in that: the spinning unit (4) comprises a movable rod (41), a first tooth groove (42), a second fixed rod (43), a fixed column (44), a yarn supply column (45), a first fixed block (46), a first servo motor (47) and a first gear (48), wherein the first fixed block (46) is fixed on the right side of the first fixed plate (14), the first servo motor (47) is arranged on the upper side of the first fixed block (46), an output shaft of the first servo motor (47) penetrates through the left side of the first fixed plate (14), the first gear (48) is fixed on an output shaft of the first servo motor (47), the movable rod (41) is connected in a sliding groove in the side face of the sliding rail (17) in a sliding mode, the first tooth groove (42) is formed in the inner side of the movable rod (41), gear teeth on the peripheral side of the first gear (48) are meshed in the first tooth groove (42), and the six second fixed rods (43) are fixed on the left side of the movable rod (41), the left end of second dead lever (43) upside is fixed with fixed column (44) respectively, the side of fixed column (44) is rotated and is connected with and supplies silk post (45), the output of singlechip (2) is connected to the input electricity of first servo motor (47), the left end of second dead lever (43) is fixed with third dead lever (22) respectively, the front end of the upside of third dead lever (22) is equipped with second fixed block (23) respectively, the upside of second fixed block (23) is equipped with toper lead block (24).

3. A tapering device for elastic net weaving, according to claim 1, characterized in that: still include mounting panel (28), the side of erection column (5) is equipped with mounting panel (28), and mounting panel (28) are located the upside of second gear (11), and the upside of mounting panel (28) contacts with the bottom side of receipts net post (8).

4. A tapering device for elastic net weaving, according to claim 1, characterized in that: the fixing device is characterized by further comprising a U-shaped fixing frame (27), the U-shaped fixing frame (27) is fixed on the upper side of the second fixing plate (15), and the upper end of the sliding rail (17) is fixed on the bottom side of the horizontal end of the U-shaped fixing frame (27).

5. A tapering device for elastic net weaving, according to claim 1, characterized in that: the novel multifunctional base is characterized by further comprising supporting legs (25) and anti-skid pads (26), wherein the four supporting legs (25) are fixed on the bottom side of the base (1) respectively, and the anti-skid pads (26) are arranged on the bottom sides of the supporting legs (25) respectively.

Images