CN214935685U - Lifting device for building electromechanical installation - Google Patents
Lifting device for building electromechanical installation Download PDFInfo
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- CN214935685U CN214935685U CN202120692075.6U CN202120692075U CN214935685U CN 214935685 U CN214935685 U CN 214935685U CN 202120692075 U CN202120692075 U CN 202120692075U CN 214935685 U CN214935685 U CN 214935685U
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Abstract
A lifting device for building electromechanical installation relates to the technical field of building electromechanical installation and comprises a bottom plate. A pair of second supporting blocks are connected to the upper surface of the bottom plate at intervals along the short axis direction, a first rotating shaft penetrates between the pair of second supporting blocks, and one end of the first rotating shaft is fixedly connected with the output end of the motor; the middle part of the first rotating shaft is sleeved with a worm. The upper surface of bottom plate, along major axis direction, interval connection have a pair of slide rail, and the slip cap has been cup jointed the slider on the slide rail, and the upper surface outer end of slider is connected with the transmission piece, and the slider medial surface is equipped with the rack. A second rotating shaft is arranged between the racks of the pair of sliding blocks, the second rotating shaft is connected with a rectangular block, a worm wheel and a transmission gear are sleeved on the second rotating shaft at intervals up and down, and the worm wheel is connected with the transmission gear through the rectangular block; wherein, the transmission gear is meshed with a pair of racks on a pair of sliding blocks; the worm wheel is meshed with the worm. The utility model provides a current elevating gear structure is comparatively complicated, is unfavorable for operating, and the higher problem of use cost.
Description
Technical Field
The utility model relates to a building machinery electrical installation technical field specifically is a elevating gear is used in building machinery electrical installation.
Background
Most of the current enterprises have automatic machine equipment, the electromechanical installation industry is born due to the birth of the electromechanical installation industry, the electromechanical installation is work with larger project scale, a project needs to be implemented in nearly half a year after a large-scale enterprise migrates, the technical requirements for installation are quite large, the project contents comprise equipment such as a boiler, a ventilation air conditioner, refrigeration, electricity, instruments, a motor, a compressor unit, a broadcast movie and television broadcast control, and an elevator is required when the electromechanics in a building are installed. In the existing lifting device, electromechanical equipment needing to be lifted is generally placed on a supporting plate, a servo motor is controlled to work through a control switch, the servo motor works to drive a screw rod to rotate, the screw rod rotates to be matched with a screw hole in a lifting block, so that the lifting block moves upwards, the lifting block moves upwards to drive the supporting plate to move upwards, the electromechanical equipment on the supporting plate moves upwards, and when the electromechanical equipment moves to a position needing to be installed, the electromechanical equipment stops moving, so that the electromechanical high-position installation is facilitated; the lifting block drives the supporting plate to perform lifting motion by rotating the lead screw in actual use, the lifting block cannot perform lifting motion conveniently, and then the supporting plate cannot perform lifting motion conveniently, so that the installation time of the electromechanical equipment is prolonged, the installation efficiency of the electromechanical equipment is reduced, the structure is complex, operation is not facilitated, and the use cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a lifting device is used in building electromechanical installation solves current lifting device structure comparatively complicated, is unfavorable for operating, and the higher problem of use cost.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a lifting device for building electromechanical installation comprises a bottom plate.
A pair of second supporting blocks are connected to the upper surface of the bottom plate at intervals along the short axis direction, a first rotating shaft penetrates between the pair of second supporting blocks, and one end of the first rotating shaft is fixedly connected with the output end of the motor; the middle part of the first rotating shaft is sleeved with a worm.
The upper surface of bottom plate, along major axis direction, interval connection have a pair of slide rail, and the slip cap has been cup jointed the slider on the slide rail, and the upper surface outer end of slider is connected with the transmission piece, and the slider medial surface is equipped with the rack.
The pair of slide rails is arranged between the pair of second supporting blocks.
A second rotating shaft is arranged between the racks of the pair of sliding blocks, the second rotating shaft is connected with a rectangular block, a worm wheel and a transmission gear are sleeved on the second rotating shaft at intervals up and down, and the worm wheel is connected with the transmission gear through the rectangular block; wherein, the transmission gear is meshed with a pair of racks on a pair of sliding blocks; the worm wheel is meshed with the worm.
Four corners of the upper surface of the bottom plate are connected with telescopic frames, and a bearing plate is connected between the top surfaces of the telescopic frames.
And a telescopic device connected with the transmission block is arranged between the upper surface of the bottom plate and the bearing plate.
One side of the upper surface of the bottom plate is connected with an operating lever.
The lower surface and the four corners of the bottom plate are provided with universal wheels.
Further preferred technical solution: the upper surface of bottom plate, along minor axis direction, interval connection have a pair of first supporting block, and a pair of first supporting block sets up the outside at a pair of slider.
Further preferred technical solution: the middle part of the lower surface of the bearing plate is connected with a connecting block.
Further preferred technical solution: the telescopic device comprises a pair of diamond-shaped telescopic main frames which are arranged side by side and connected by support rods, hinge points at two ends of the pair of diamond-shaped telescopic main frames are connected through a transmission shaft, and hinge points in the middle of the diamond-shaped telescopic main frames are connected in a penetrating manner through a connecting shaft.
Further preferred technical solution: the transmission shaft at the lowermost end is connected with the transmission block.
Further preferred technical solution: the inner end of a connecting shaft which is arranged on the middle hinge point at the uppermost end in a penetrating manner on the diamond-shaped telescopic main frame is fixed on the bearing plate, and the connecting shaft which is arranged on the middle hinge point at the lowermost end in a penetrating manner on the diamond-shaped telescopic main frame is connected on the first supporting block in a penetrating manner.
Further preferred technical solution: the rack is made of cast iron.
Further preferred technical solution: circular through-hole has been seted up at second supporting shoe top, and circular through-hole inside is provided with the ball, circular through-hole and first pivot adaptation roll connection.
Further preferred technical solution: the transmission block is provided with a U-shaped transmission groove matched with the transmission shaft.
Further preferred technical solution: the telescopic frame comprises a fixed cylinder, a first moving rod and a second moving rod which are sequentially sleeved, and the diameters of the fixed cylinder, the first moving rod and the second moving rod are sequentially decreased; the fixed cylinder is fixedly connected with the upper surface of the bottom plate, and the second moving rod is fixedly connected with the lower surface of the bearing plate.
Compared with the prior art, the utility model has the following characteristics and beneficial effect:
1, the utility model discloses elevating gear is used in building electromechanical installation, through setting up transmission piece and transmission shaft, can comparatively make things convenient for stable contained angle to the front and back both sides bracing piece to make the connecting block can make things convenient for stable drive loading board to carry out the elevating movement, thereby can make things convenient for effectually to install electromechanical device, this elevating gear structure is comparatively simple, use comparatively convenient and fast, the installation time of electromechanical device has been saved greatly, the installation effectiveness of electromechanical device has been improved, the cost of electromechanical device installation has also been reduced.
2, the utility model discloses elevating gear is used in building electromechanical installation, through setting up worm and drive gear, the slider of both sides can be stabilized effectual drive respectively and be located the transmission piece on right side and be located the orbit of left transmission piece and move along the slide rail around making, and then can make things convenient for stable the distance to be located the right side and be located between the left transmission shaft level to adjust, transmission shaft and bracing piece cooperation, make the connecting axle that is located the top can stabilize convenient drive connecting block and loading board and carry out elevating movement, thereby can comparatively make things convenient for stable installing electromechanical device, the efficiency of electromechanical device installation has been improved greatly.
3, the utility model discloses elevating gear is used in building electromechanical installation through setting up control rod and universal wheel, makes the bottom plate can make things convenient for effectual drive expansion bracket and the loading board motion, and then makes the loading board can comparatively convenient and fast's drive electromechanical device motion, makes that the loading board can comparatively convenient transport electromechanical device to the place of installation, and the structure is comparatively simple, operates comparatively convenient and fast, comparatively effectual installation time who has saved electromechanical device, and then comparatively effectual installation effectiveness who improves electromechanical device.
Drawings
Fig. 1 is a schematic view of the lifting device for the electromechanical installation of the building of the present invention.
Fig. 2 is a schematic diagram of the transmission structure of the present invention.
Fig. 3 is an enlarged schematic view of a structure in fig. 2 according to the present invention.
Reference numerals: 1. a base plate; 2. a slide rail; 3. a first support block; 4. an electric motor; 5. a telescopic frame; 6. a joystick; 7. a universal wheel; 8. a carrier plate; 9. connecting blocks; 10. a connecting shaft; 11. a support bar; 12. a drive shaft; 13. a slider; 14. a transmission block; 15. a second support block; 16. a first rotating shaft; 17. a worm; 18. a second rotating shaft; 19. a worm gear; 20. a transmission gear; 21. a rectangular block; 22. a rack.
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 to 3, a lifting device for building electromechanical installation includes a base plate 1.
A pair of second supporting blocks 15 are connected to the upper surface of the bottom plate 1 at intervals along the short axis direction, a first rotating shaft 16 penetrates between the pair of second supporting blocks 15, and one end of the first rotating shaft 16 is fixedly connected with the output end of the motor 4; a worm 17 is sleeved in the middle of the first rotating shaft 16.
The upper surface of bottom plate 1, along major axis direction, interval connection have a pair of slide rail 2, and the sliding rail 2 goes up sliding sleeve and has connect slider 13, and the outer end of the upper surface of slider 13 is connected with transmission block 14, and the slider 13 medial surface is equipped with rack 22.
The pair of slide rails 2 is disposed between the pair of second support blocks 15.
A second rotating shaft 18 is arranged between the racks of the pair of sliding blocks 13, the second rotating shaft 18 is connected with a rectangular block 21, a worm wheel 19 and a transmission gear 20 are sleeved on the second rotating shaft 18 at intervals up and down, and the worm wheel 19 and the transmission gear 20 are connected through the rectangular block 21; wherein, the transmission gear 20 is meshed with a pair of racks on a pair of sliding blocks 13; the worm wheel 19 meshes with the worm 17.
Through setting up worm 17 and drive gear 20, the slider 13 of both sides can be stabilized effectual drives respectively and is located the transmission piece 14 on right side and is located the left transmission piece 14 and move along the orbit of slide rail 2 around making, and then can be convenient stable to the distance that lies in the right side and be located between the left transmission shaft 12 level adjust, transmission shaft 12 and bracing piece 11 cooperation, make the connecting axle 10 that is located the top can stabilize convenient drive connecting block 9 and loading board 8 and carry out the elevating movement, thereby can be comparatively convenient stable install electromechanical device, the efficiency of electromechanical device installation has been improved greatly.
Four corners of the upper surface of the bottom plate 1 are connected with telescopic frames 5, and a bearing plate 8 is connected between the top surfaces of the telescopic frames 5.
A telescopic device connected with a transmission block 14 is arranged between the upper surface of the bottom plate 1 and the bearing plate 8.
One side of the upper surface of the bottom plate 1 is connected with an operating lever 6.
Through setting up control rod 6 and universal wheel 7, make bottom plate 1 can make things convenient for effectual drive expansion bracket 5 and the motion of loading board 8, and then make loading board 8 can the motion of comparatively convenient and fast's drive electromechanical device, make loading board 8 can be comparatively convenient transport electromechanical device to the installation site, the structure is comparatively simple, operate comparatively convenient and fast, comparatively effectual installation time who has saved electromechanical device, and then comparatively effectual installation effectiveness who improves electromechanical device.
A pair of first support blocks 3 are connected to the upper surface of the base plate 1 at intervals in the short axis direction, and the pair of first support blocks 3 are disposed outside the pair of sliders 13.
The middle part of the lower surface of the bearing plate 8 is connected with a connecting block 9.
The telescopic device comprises a pair of diamond-shaped telescopic main frames which are arranged side by side and connected by support rods 11, hinge points at two ends of the pair of diamond-shaped telescopic main frames are connected through a transmission shaft 12, and hinge points at the middle parts of the diamond-shaped telescopic main frames are connected in a penetrating manner through a connecting shaft 10.
The drive shaft 12 at the lowermost end is connected to a drive block 14.
Through setting up transmission block 14 and transmission shaft 12, can be comparatively convenient stable adjust the contained angle of front and back both sides bracing piece 11 to make connecting block 9 can make things convenient for stable drive loading board 8 to carry out the elevating movement, thereby can make things convenient for effectually to install electromechanical device, this elevating gear structure is comparatively simple, and it is comparatively convenient and fast to use, has saved electromechanical device's installation time greatly, has improved electromechanical device's installation effectiveness, has also reduced electromechanical device installation's cost.
The inner end of a connecting shaft 10 which is arranged on the diamond-shaped telescopic main frame and is connected to the hinge point of the middle part of the uppermost end in a penetrating way is fixed on the bearing plate 8, and the connecting shaft 10 which is arranged on the diamond-shaped telescopic main frame and is connected to the hinge point of the middle part of the lowermost end in a penetrating way is connected to the first supporting block 3.
The material of the rack 22 is cast iron, and the number of the racks is forty-eight.
Circular through-hole has been seted up at second supporting shoe 15 top, and circular through-hole inside is provided with the ball, circular through-hole and 16 adaptation roll connections of first pivot.
The transmission block 14 is provided with a U-shaped transmission groove matched with the transmission shaft 12, the width of the U-shaped transmission groove is twenty-six millimeters, and the diameter of the transmission shaft 12 is twenty-five millimeters.
The telescopic frame 5 comprises a fixed cylinder, a first movable rod and a second movable rod which are sequentially sleeved, and the diameters of the fixed cylinder, the first movable rod and the second movable rod are sequentially decreased; wherein, the fixed cylinder is fixedly connected with the upper surface of the bottom plate 1, and the second movable rod is fixedly connected with the lower surface of the bearing plate 8.
The motor 4 is of the type PE-PL.
The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
The utility model discloses in, in order to make the worm wheel 19 can be stable drive second pivot 18 and drive gear 20 rotate, consequently at 18 outer fixed surface of second pivot rectangular blocks that are connected with, and the structure that second pivot 18 and rectangular blocks become pegs graft with 19 upper surfaces of worm wheel and 20 upper surfaces of drive gear, the rectangular block has improved the stability of worm wheel 19 and 18 and the linkage of drive gear 20 of second pivot.
The utility model discloses in, in order to make the drive slider 13 motion that drive gear 20 can be stable, consequently at the 13 medial surface fixedly connected with transmission teeth of a cogwheel of slider, and the transmission teeth of a cogwheel and the meshing of drive gear 20, and the material of the transmission teeth of a cogwheel is the cast iron, and the quantity of the transmission teeth of a cogwheel is forty-eight groups, and the transmission teeth of a cogwheel have improved the stability of drive gear 20 with the linkage of slider 13.
The utility model discloses in, in order to make the drive worm 17 that first pivot 16 can be smooth and easy rotate, consequently offered circular through-hole at 15 medial surface tops of second supporting shoe, and the inside ball that is provided with of circular through-hole, and the structure that circular through-hole and ball constitute and 16 surface looks adaptations of first pivot, the ball has reduced the frictional force between circular through-hole and the first pivot 16, has improved 16 pivoted flexibilities of first pivot.
The utility model discloses in, in order to make the motion of drive transmission shaft 12 that transmission piece 14 can be convenient, consequently set up the U-shaped driving groove with transmission shaft 12 looks adaptation on transmission piece 14 upper surface, and the width in U-shaped driving groove is twenty-six millimeters, and the diameter of transmission shaft 12 is twenty-five millimeters, and the U-shaped driving groove has improved the convenience that transmission piece 14 and transmission shaft 12 linked.
The utility model discloses in, in order to make the carrying out elevating movement that loading board 8 can be stable, consequently set up the quantity of expansion bracket 5 and be four groups, and expansion bracket 5 comprises a fixed section of thick bamboo, first carriage release lever and second carriage release lever, and the diameter size of a fixed section of thick bamboo, first carriage release lever and second carriage release lever steadilys decrease in proper order, and the height of expansion bracket 5 changes along with the change of loading board 8 height, has improved the stability of loading board 8 motion.
When the lifting device for building electromechanical installation is used, firstly, the control lever 6 is held, the bottom plate 1 and the bearing plate 8 are moved to an installation place under the action of the universal wheel 7, then the motor 4 is started, the output end of the motor 4 drives the first rotating shaft 16 and the worm 17 to rotate anticlockwise, the worm 17 is meshed with the worm wheel 19 for transmission, the worm wheel 19 drives the second rotating shaft 18 and the transmission gear 20 to rotate clockwise, the inner side surface of the slider 13 is fixedly connected with the transmission gear teeth meshed with the transmission gear 20, further the slider 13 drives the transmission block 14 to move inwards along the track of the slide rail 2, the upper surface of the transmission block 14 is provided with a U-shaped transmission groove matched with the transmission shaft 12, the U-shaped transmission grooves on the left side and the right side are matched with the transmission shafts 12 on the left side and the right side, the transmission shafts 12 move inwards, further the vertical included angle between the support rods 11 on the front side and the rear side is reduced, thereby the connecting shaft 10 positioned at the top drives the connecting block 9 and the bearing plate 8 to move upwards, thereby causing the carrier plate 8 to move the electromechanical device upwards and switching off the electric motor 4 when the electromechanical device reaches the mounting position.
To sum up, the utility model discloses elevating gear is used in building electromechanical installation through setting up transmission piece 14 and transmission shaft 12, can be comparatively convenient stable the contained angle to front and back both sides bracing piece 11 adjust to make connecting block 9 can make things convenient for stable drive loading board 8 to carry out the elevating movement, thereby can make things convenient for effectually to install electromechanical device, this elevating gear structure is comparatively simple, use comparatively convenient and fast, the installation time of electromechanical device has been saved greatly, the installation effectiveness of electromechanical device has been improved, the cost of electromechanical device installation has also been reduced.
The utility model discloses elevating gear is used in building electromechanical installation, through setting up worm 17 and drive gear 20, the slider 13 of both sides can be stabilized effectual drive respectively and be located the transmission piece 14 on right side and be located left transmission piece 14 and move along slide rail 2's orbit around making, and then can make things convenient for stable to be located the right side and be located the distance between the 12 levels of left transmission shaft and adjust, transmission shaft 12 and the cooperation of bracing piece 11, make connecting axle 10 that is located the top can stabilize convenient drive connecting block 9 and loading board 8 and carry out the elevating movement, thereby can comparatively make things convenient for stable to install electromechanical device, the efficiency of electromechanical device installation has been improved greatly.
The utility model discloses elevating gear is used in building electromechanical installation, through setting up control rod 6 and universal wheel 7, make bottom plate 1 can make things convenient for the motion of effectual drive expansion bracket 5 and loading board 8, and then make loading board 8 can the comparatively convenient and fast's motion of drive electromechanical device, make loading board 8 can be comparatively convenient transport electromechanical device to the place of installation, the structure is comparatively simple, the operation is got up comparatively convenient and fast, comparatively effectual installation time who has saved electromechanical device, and then comparatively effectual installation effectiveness who improves electromechanical device.
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 (10)
1. The utility model provides a building elevating gear for electromechanical installation which characterized in that: comprises a bottom plate (1);
a pair of second supporting blocks (15) is connected to the upper surface of the bottom plate (1) at intervals along the short axis direction, a first rotating shaft (16) penetrates between the pair of second supporting blocks (15), and one end of the first rotating shaft (16) is fixedly connected with the output end of the motor (4); a worm (17) is sleeved in the middle of the first rotating shaft (16);
the upper surface of the bottom plate (1) is connected with a pair of slide rails (2) at intervals along the long axis direction, the slide rails (2) are sleeved with a slide block (13) in a sliding manner, the outer end of the upper surface of the slide block (13) is connected with a transmission block (14), and the inner side surface of the slide block (13) is provided with a rack (22);
the pair of slide rails (2) are arranged between the pair of second supporting blocks (15);
a second rotating shaft (18) is arranged between the racks of the pair of sliding blocks (13), the second rotating shaft (18) is connected with a rectangular block (21), a worm wheel (19) and a transmission gear (20) are sleeved on the second rotating shaft (18) at intervals from top to bottom, and the worm wheel (19) and the transmission gear (20) are connected through the rectangular block (21); wherein, the transmission gear (20) is meshed with a pair of racks on the pair of sliding blocks (13); the worm wheel (19) is meshed with the worm (17);
the four corners of the upper surface of the bottom plate (1) are connected with telescopic frames (5), and a bearing plate (8) is connected between the top surfaces of the telescopic frames (5);
a telescopic device connected with the transmission block (14) is arranged between the upper surface of the bottom plate (1) and the bearing plate (8);
one side of the upper surface of the bottom plate (1) is connected with an operating lever (6);
universal wheels (7) are arranged on the lower surface and four corners of the bottom plate (1).
2. The lifting device for building electromechanical installation according to claim 1, characterized in that: a pair of first supporting blocks (3) are connected to the upper surface of the bottom plate (1) at intervals along the short axis direction, and the pair of first supporting blocks (3) are arranged on the outer sides of the pair of sliding blocks (13).
3. The lifting device for building electromechanical installation according to claim 2, characterized in that: the middle part of the lower surface of the bearing plate (8) is connected with a connecting block (9).
4. The lifting device for building electromechanical installation according to claim 3, characterized in that: the telescopic device comprises a pair of diamond-shaped telescopic main frames which are arranged side by side and connected by support rods (11), hinge points at two ends of the pair of diamond-shaped telescopic main frames are connected through a transmission shaft (12), and hinge points in the middle of the diamond-shaped telescopic main frames are connected in a penetrating manner through a connecting shaft (10).
5. The lifting device for building electromechanical installation according to claim 4, characterized in that: the transmission shaft (12) positioned at the lowest end is connected with the transmission block (14).
6. The lifting device for building electromechanical installation according to claim 5, characterized in that: the inner end of a connecting shaft (10) which is arranged on the diamond-shaped telescopic main frame and is connected to the hinge point of the middle part of the uppermost end in a penetrating way is fixed on the bearing plate (8), and the connecting shaft (10) which is arranged on the diamond-shaped telescopic main frame and is connected to the hinge point of the middle part of the lowermost end in a penetrating way is connected to the first supporting block (3).
7. The lifting device for building electromechanical installation according to claim 1, characterized in that: the material of the rack (22) is cast iron.
8. The lifting device for building electromechanical installation according to claim 1, characterized in that: a circular through hole is formed in the top of the second supporting block (15), balls are arranged in the circular through hole, and the circular through hole is matched and connected with the first rotating shaft (16) in a rolling mode.
9. The lifting device for building electromechanical installation according to claim 1, characterized in that: the transmission block (14) is provided with a U-shaped transmission groove matched with the transmission shaft (12).
10. The lifting device for building electromechanical installation according to any one of claims 1 to 9, characterized in that: the telescopic frame (5) comprises a fixed cylinder, a first movable rod and a second movable rod which are sequentially sleeved, and the diameters of the fixed cylinder, the first movable rod and the second movable rod are sequentially decreased; the fixed cylinder is fixedly connected with the upper surface of the bottom plate (1), and the second moving rod is fixedly connected with the lower surface of the bearing plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120692075.6U CN214935685U (en) | 2021-04-06 | 2021-04-06 | Lifting device for building electromechanical installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120692075.6U CN214935685U (en) | 2021-04-06 | 2021-04-06 | Lifting device for building electromechanical installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214935685U true CN214935685U (en) | 2021-11-30 |
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ID=79047552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120692075.6U Active CN214935685U (en) | 2021-04-06 | 2021-04-06 | Lifting device for building electromechanical installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214935685U (en) |
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2021
- 2021-04-06 CN CN202120692075.6U patent/CN214935685U/en active Active
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