CN216713944U - High support frame for construction of security - Google Patents
High support frame for construction of security Download PDFInfo
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- CN216713944U CN216713944U CN202121358059.XU CN202121358059U CN216713944U CN 216713944 U CN216713944 U CN 216713944U CN 202121358059 U CN202121358059 U CN 202121358059U CN 216713944 U CN216713944 U CN 216713944U
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Abstract
The utility model provides a high-safety support frame for building construction, which comprises a support base plate, a lifting and pressing night top, a support upright column pipe, an adjustable support caster frame assembly, a reinforcing and shaping support rod assembly, a support jacking plate assembly, a connecting wheel buckle, a reserved insertion pipe, a side inclined support pipe, a side support cross rod, an alarm, a storage battery, a sliding groove hole, a positioning screw, a connecting lug plate, a main inclined support pipe and a main support cross rod. According to the utility model, the adjusting wheel disc is held by a hand or the holding rod is rotated to rotate anticlockwise, and the supporting caster main body is lifted off the ground, so that the supporting base plate is contacted with the ground, and the convenience and flexibility of use are improved; the pressure sensor plays a role in detecting pressure in the supporting process, and the alarm is triggered to play a role in alarming and prompting when the pressure is too high; twist extension screw rod and adjust length, perhaps rotate and accomodate the pipe and carry out inclination's regulation, with U type chuck joint on the building wall of side, improve stability and security.
Description
Technical Field
The utility model belongs to the technical field of building equipment, and particularly relates to a support frame with high safety for building construction.
Background
The building construction refers to production activities in the engineering construction implementation stage, is the construction process of various buildings, and also can be a process of changing various lines on a design drawing into a real object at a specified place. The method comprises foundation engineering construction, main structure construction, roofing engineering construction, decoration engineering construction and the like.
The construction machine is a general name of mechanical equipment used for engineering construction and urban and rural construction, and comprises various machines such as an excavating machine, a shovel soil transportation machine, a compaction machine, an engineering hoisting machine, a piling machine, a pavement machine, a concrete product machine, a steel bar grade prestress machine, a decoration machine, an overhead working machine and the like. The prefabricated building is a building formed by assembling prefabricated components on a construction site, and has the advantages of high building speed, small restriction by climatic conditions, labor saving, building quality improvement, capability of designing and building a house by a user, capability of repeatedly disassembling a wall body and recycling, and no construction waste caused by disassembling the wall. The components used by the cast-in-place construction method comprise external wall panels, internal wall panels, laminated slabs, prefabricated beams, prefabricated columns, stair boards and the like, the construction is completed through a large amount of on-site assembly operation, the time and labor are greatly reduced compared with the original cast-in-place operation, and the cast-in-place construction method meets the requirements of green space construction.
In the fabricated building, the support frame is an indispensable auxiliary tool in the building construction process, and can support various components in the building. In addition, chinese patent publication No. CN108729690A discloses an adjustable support frame for building construction, which includes a bottom plate, a lower support tube, a support plate, a lead screw, a bearing, a driving motor, a coupling, a moving block, a connecting plate, a clamping plate, an upper support tube, a connecting block, a connecting tube, a locking bolt, and the like. But the support frame for the construction still exists the connection support that is not convenient for carry out the side with the building and fixes, lacks warning function and leads to the relatively poor problem of security.
Therefore, it is very necessary to provide a support frame for building construction with high safety.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a support frame for building construction, which is high in safety, and aims to solve the problems that the existing support frame for building construction is inconvenient to laterally connect, support and fix with a building, and is poor in safety due to the lack of a warning and reminding function. A high-safety support frame for building construction comprises a support base plate, a lifting hydraulic jack, a support upright post pipe, an adjustable support caster frame assembly, a reinforcing and shaping support rod assembly, a support jacking disc assembly, a connecting wheel buckle, a reserved insertion pipe, a side inclined support pipe, a side support cross rod, an alarm, a storage battery, a sliding groove hole, a positioning screw, a connecting lug plate, a main inclined support pipe and a main support cross rod,
the lower part of the lifting hydraulic jack is connected with the upper part of the supporting base plate through a bolt; the output end of the lifting hydraulic jack is connected with the lower side position inside the supporting upright post pipe through a bolt; the number of the supporting upright post pipes is four and the supporting upright post pipes are symmetrically arranged; the adjustable supporting leg wheel carrier assembly is welded at the lower part of the outer side of the supporting upright post pipe; the reinforcing and shaping support rod assembly is connected to the rear side of the connecting lug plate in a shaft manner; the supporting puller plate component is in threaded connection with the upper side position inside the supporting upright post pipe; the connecting wheel buckles are respectively welded at the upper part and the lower part of the outer surface of the supporting upright post pipe; the reserved insertion pipe is connected to the upper part of the outer side of the supporting upright column pipe arranged on the left side through a bolt; the lateral support cross rods are transversely bolted at the upper and lower positions between the front and rear adjacent support upright pipes and the support upright pipes; the side diagonal bracing tubes are connected with the middle positions between the front and rear adjacent supporting upright column tubes and the supporting upright column tubes through bolts; the alarm is connected with the middle position of the upper part of the main supporting cross bar or the side supporting cross bar arranged on the upper side through a bolt; the storage battery is connected to the upper part of the main support cross rod or the side support cross rod arranged at the lower side through bolts; the sliding groove hole is formed in the middle of the right side of the supporting upright column pipe arranged on the right side; the connecting lug plate is clamped in the chute hole in a sliding way and is fixed by a positioning screw; the main inclined supporting pipe is connected with the middle position between the left and right adjacent supporting upright post pipes and the supporting upright post pipes through bolts; the main supporting cross rods are respectively bolted at the upper and lower positions between the left and right adjacent supporting upright post pipes and the supporting upright post pipes;
the adjustable supporting leg wheel frame assembly comprises a transverse supporting rod, a connecting screw cylinder and a lower supporting screw rod, and the connecting screw cylinder is connected to the top end of the outer side of the transverse supporting rod through a screw; the connecting screw cylinder; the lower supporting screw rod is longitudinally connected inside the connecting screw barrel in a threaded manner.
Preferably, the lower end of the lower supporting screw is connected with a supporting caster main body through a bolt; the upper end of the lower supporting screw rod is connected with an adjusting wheel disc through a bolt; the right side inside the adjusting wheel disc is longitudinally movably inserted with a rotating holding rod.
Preferably, the reinforcing and shaping support rod assembly comprises a containing pipe, a shaft connecting through hole, an extension screw rod and a connecting cap, wherein the shaft connecting through hole is formed in the middle of the upper part of the containing pipe; extension screw rod one end threaded connection in the inside downside position of accomodating the pipe, other end threaded connection is in the inside left side position of connecting the cap.
Preferably, a U-shaped chuck is welded on the right side of the connecting cap; and the right side of the U-shaped chuck is in threaded connection with a puller bolt.
Preferably, the screw at the top end of the inner side of the jacking bolt is connected with a clamping pad.
Preferably, the supporting and tightening disc assembly comprises an upper supporting screw rod and a tightening flange plate, and the tightening flange plate is connected to the upper end of the upper supporting screw rod through a transverse bolt; the jacking flange plate is specifically a circular stainless steel flange plate.
Preferably, a pressure sensor is embedded in the middle position inside the jacking flange plate; positioning through holes are longitudinally formed in the four corners inside the jacking flange plate; the lower part of the jacking flange plate is welded with a steering insertion pipe.
Preferably, the steering insertion tube is a stainless steel tube; the steering insertion pipes are provided with four and are arranged in a cross shape.
Preferably, the upper support screw is screwed to the inner upper side of the support pillar tube.
Preferably, the transverse supporting rod is welded with the supporting upright post pipe.
Preferably, the receiving tube is coupled to a rear portion of the coupling lug.
Preferably, the lifting hydraulic jacks and the lifting hydraulic jacks which are adjacent in the front-back direction are connected to the upper part of the same supporting base plate through bolts.
Preferably, the supporting caster main body is a rubber universal wheel with a brake pad.
Preferably, the pressure sensor and the alarm are respectively and electrically connected with a storage battery; the storage battery is a rechargeable lithium battery; the alarm is specifically an alarm with the model number of LTE-1101J; the pressure sensor is a sensor with a model number HYLY-019; the pressure sensor is in communication connection with the alarm.
Compared with the prior art, the utility model has the beneficial effects that:
when the supporting caster wheel is used, the supporting base plate is held by a hand to push the supporting frame, the supporting frame moves to a position between buildings to be supported under the action of the supporting caster wheel main body, and the brake pad on the supporting caster wheel main body is fixed; holding the adjusting wheel disc by hand or rotating the holding rod to rotate anticlockwise so as to drive the lower supporting screw rod to rotate in the connecting screw cylinder, lifting the supporting caster main body off the ground and enabling the supporting base plate to be in contact with the ground;
the lifting hydraulic jack is adjusted to lift, so that the supporting upright post pipe is supported upwards, the jacking flange plate is propped tightly below the upper building, the drill rod is inserted into the steering insertion pipe and rotates anticlockwise, the upper supporting screw rod is lifted upwards from the supporting upright post pipe to play a role in manually adjusting the jacking flange plate, and the upper supporting screw rod penetrates through the positioning through hole for connection;
the pressure sensor plays a role in detecting pressure in the supporting process, and the alarm is triggered to play a role in alarming and prompting when the pressure is too high; in order to enhance the stability of the device, the extension screw rod is screwed to adjust the length, or the containing pipe is rotated to adjust the inclination angle, the U-shaped chuck is clamped on the wall surface of a building on the side surface, the jacking bolt is screwed, the clamping effect is achieved under the effect of the clamping pad, and the safety is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a schematic structural view of the adjustable support caster frame assembly of the present invention.
Figure 4 is a schematic structural view of a reinforcing shaped strut assembly of the present invention.
Fig. 5 is a schematic structural view of a supporting disc jacking assembly of the present invention.
In the figure:
1. supporting a base plate; 2. lifting a hydraulic jack; 3. supporting the column tube; 4. an adjustable support caster frame assembly; 41. a transverse strut; 42. connecting the screw cylinder; 43. a lower support screw; 431. supporting a caster body; 432. adjusting the wheel disc; 433. rotating the holding rod; 5. reinforcing and shaping the strut assembly; 51. receiving a tube; 52. the shaft is connected with the through hole; 53. extending the screw; 54. a connecting cap; 541. a U-shaped chuck; 542. jacking the bolt; 5421. a clamping pad; 6. supporting the tightening disc assembly; 61. an upper support screw; 62. tightly propping the flange plate; 621. a pressure sensor; 622. positioning the through hole; 623. a steering insertion pipe; 7. connecting a wheel buckle; 8. reserving an insertion pipe; 9. A side diagonal bracing tube; 10. a side support rail; 11. an alarm; 12. a storage battery; 13. a sliding slot hole; 14. a set screw; 15. connecting the ear plates; 16. a main diagonal bracing tube; 17. the main support cross bar.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
example (b):
as shown in the attached drawings 1 to 3, the utility model provides a high-safety support frame for building construction, which comprises a support base plate 1, a lifting hydraulic jack 2, a support upright post pipe 3, an adjustable support leg wheel carrier component 4, a reinforcing and shaping support rod component 5, a support jacking plate component 6, a connecting wheel buckle 7, a reserved insertion pipe 8, a side inclined support pipe 9, a side support cross rod 10, an alarm 11, a storage battery 12, a sliding groove hole 13, a positioning screw 14, a connecting lug plate 15, a main inclined support pipe 16 and a main support cross rod 17,
the lower part of the lifting hydraulic jack 2 is connected with the upper part of the supporting base plate 1 through a bolt; the output end of the lifting hydraulic ram 2 is in bolted connection with the lower side position inside the supporting upright post pipe 3; the four supporting upright column tubes 3 are symmetrically arranged; the adjustable supporting caster frame assembly 4 is welded at the lower part of the outer side of the supporting upright column pipe 3; the reinforcing and shaping strut component 5 is axially connected at the rear side position of the connecting lug plate 15; the supporting puller plate component 6 is in threaded connection with the upper side position inside the supporting upright post pipe 3; the connecting wheel buckles 7 are respectively welded at the upper and lower positions of the outer surface of the supporting upright post pipe 3; the reserved insertion pipe 8 is connected to the upper part of the outer side of the supporting upright column pipe 3 arranged on the left side through a bolt; the side supporting cross rods 10 are transversely bolted at the upper and lower positions between the front and rear adjacent supporting upright column pipes 3 and the supporting upright column pipes 3; the side inclined supporting pipe 9 is connected with the middle position between the front and back adjacent supporting upright post pipes 3 and the supporting upright post pipes 3 through bolts; the alarm 11 is bolted on the upper middle position of the main support cross bar 17 or the side support cross bar 10 arranged on the upper side; the storage battery 12 is bolted to the upper part of the main support cross bar 17 or the side support cross bar 10 arranged at the lower side; the sliding slot hole 13 is formed in the middle of the right side of the supporting upright column tube 3 arranged on the right side; the connecting lug plate 15 is clamped in the sliding groove hole 13 in a sliding way and is fixed by a positioning screw 14; the main inclined supporting pipe 16 is connected with the middle position between the left and right adjacent supporting upright post pipes 3 and the supporting upright post pipes 3 through bolts; the main supporting cross rods 17 are respectively bolted at the upper and lower positions between the left and right adjacent supporting upright tubes 3 and supporting upright tubes 3;
the adjustable supporting leg wheel frame assembly 4 comprises a cross support rod 41, a connecting screw cylinder 42 and a lower supporting screw rod 43, wherein the connecting screw cylinder 42 is in screw connection with the top end of the outer side of the cross support rod 41; the connecting screw cylinder 42; the lower support screw 43 is longitudinally screwed inside the connecting screw cylinder 42.
As shown in fig. 3, in the above embodiment, in particular, the lower end of the lower supporting screw 43 is connected with a supporting caster body 431 by a bolt; the upper end of the lower supporting screw 43 is connected with an adjusting wheel disc 432 through a bolt; a rotary holding rod 433 is longitudinally movably inserted at the right side inside the adjusting wheel disc 432.
As shown in fig. 4, in the above embodiment, in particular, the reinforcing and shaping strut assembly 5 includes a receiving tube 51, a shaft receiving through hole 52, an extension screw 53 and a connecting cap 54, wherein the shaft receiving through hole 52 is opened at the upper middle position of the receiving tube 51; one end of the extension screw 53 is in threaded connection with the lower side position inside the containing pipe 51, and the other end of the extension screw is in threaded connection with the left side position inside the connecting cap 54; a U-shaped chuck 541 is welded at the right side of the connecting cap 54; a jacking bolt 542 is connected to the right side of the U-shaped chuck 541 through threads; the inner top end of the jacking bolt 542 is screwed with a clamping pad 5421.
In the above embodiment, as shown in fig. 5, specifically, the supporting tightening plate assembly 6 includes an upper supporting screw 61 and a tightening flange 62, and the tightening flange 62 is connected to the upper end of the upper supporting screw 61 by a transverse bolt; the jacking flange plate 62 is a circular stainless steel flange plate; a pressure sensor 621 is embedded in the middle position inside the abutting flange plate 62; positioning through holes 622 are longitudinally formed in four corners inside the abutting flange plate 62; the lower part of the jacking flange plate 62 is welded with a steering insertion pipe 623; the turning insertion pipe 623 specifically adopts a stainless steel pipe; the turning insertion tubes 623 are four and are arranged in a cross shape.
In the above embodiment, specifically, the upper support screw 61 is screwed to the inner upper side of the support pillar 3.
In the above embodiment, specifically, the cross strut 41 is welded to the support pillar tube 3.
In the above embodiment, in particular, the receiving tube 51 is axially connected to the rear portion of the connecting ear plate 15.
In the above embodiment, specifically, the front and rear adjacent lifting hydraulic rams 2 and lifting hydraulic rams 2 are bolted to the upper part of the same supporting base plate 1.
In the above embodiment, specifically, the supporting caster body 431 is a rubber universal wheel with a brake pad.
In the above embodiment, specifically, the pressure sensor 621 and the alarm 11 are respectively electrically connected to the storage battery 12; the storage battery 12 is a rechargeable lithium battery; the alarm 11 is specifically an alarm with the model of LTE-1101J; the pressure sensor 621 adopts a HYLY-019 type sensor specifically; the pressure sensor 621 is connected to the alarm 11.
Principle of operation
When the utility model is used, the supporting base plate 1 is held by hand to push the supporting frame, the supporting frame moves to a building to be supported under the action of the supporting caster main bodies 431, and the brake pads on the supporting caster main bodies 431 are fixed; the adjusting wheel disc 432 or the holding rod 433 is held by hand to rotate anticlockwise, so that the lower supporting screw 43 is driven to rotate in the connecting screw cylinder 42, the supporting caster main body 431 is lifted off the ground, and the supporting base plate 1 is in contact with the ground; the lifting hydraulic ram 2 is adjusted to lift, so that the supporting upright tube 3 is supported upwards, the jacking flange plate 62 is propped against the lower surface of an upper building, a drill rod is inserted into the steering insertion tube 623 and rotates anticlockwise, so that the upper supporting screw 61 is lifted upwards from the supporting upright tube 3, the function of manually adjusting the jacking flange plate 62 is achieved, and a fixing bolt penetrates through the positioning through hole 622 for connection; the pressure sensor 621 plays a role in pressure detection in the supporting process, and triggers the alarm 11 to play a role in alarm prompt when the pressure is too high; in order to enhance the stability of the device, the extension screw 53 is screwed to adjust the length, or the storage tube 51 is rotated to adjust the inclination angle, the U-shaped chuck 541 is engaged with the building wall on the side, and the tightening bolt 542 is screwed to perform the clamping function by the clamping pad 5421, thereby improving the safety.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a high support frame for construction of security, a serial communication port, this high support frame for construction of security, including supporting bed plate (1), lift hydraulic ram (2), support stand pipe (3), adjustable support truckle frame subassembly (4), consolidate design branch subassembly (5), support tight dish subassembly (6), fifth wheel buckle (7), reserve intubate (8), side bracing tube (9), side support horizontal pole (10), siren (11), battery (12), slotted hole (13), set screw (14), connect otic placode (15), main bracing tube (16) and main tributary support horizontal pole (17),
the lower part of the lifting hydraulic jack (2) is connected with the upper part of the supporting base plate (1) through a bolt; the output end of the lifting hydraulic ram (2) is in bolted connection with the lower side position inside the supporting upright post pipe (3); the four supporting upright post pipes (3) are symmetrically arranged; the adjustable supporting caster frame assembly (4) is welded at the lower part of the outer side of the supporting upright post pipe (3); the reinforcing and shaping support rod assembly (5) is axially connected to the rear side of the connecting lug plate (15); the supporting puller plate component (6) is in threaded connection with the upper side position inside the supporting upright post pipe (3); the connecting wheel buckles (7) are respectively welded at the upper and lower positions of the outer surface of the supporting upright column tube (3); the reserved insertion pipe (8) is connected to the upper part of the outer side of the supporting upright column pipe (3) arranged on the left side through a bolt; the lateral support cross rods (10) are transversely bolted at the upper and lower positions between the front and rear adjacent support upright column pipes (3) and the support upright column pipes (3); the side inclined supporting pipe (9) is connected with the middle position between the front and rear adjacent supporting upright column pipes (3) and the supporting upright column pipes (3) through bolts; the alarm (11) is in bolted connection with the middle position of the upper part of a main supporting cross rod (17) or a side supporting cross rod (10) arranged on the upper side; the storage battery (12) is connected to the upper part of a main support cross bar (17) or a side support cross bar (10) arranged at the lower side through bolts; the sliding groove hole (13) is formed in the middle position of the right side of the supporting upright column pipe (3) arranged on the right side; the connecting lug plate (15) is clamped in the sliding groove hole (13) in a sliding way and is fixed by a positioning screw (14); the main inclined supporting pipe (16) is connected to the middle position between the left and right adjacent supporting upright post pipes (3) and the supporting upright post pipes (3) through bolts; the main supporting cross rods (17) are respectively bolted at the upper and lower positions between the left and right adjacent supporting upright column pipes (3) and the supporting upright column pipes (3);
the adjustable supporting caster frame assembly (4) comprises a transverse supporting rod (41), a connecting screw cylinder (42) and a lower supporting screw rod (43), wherein the connecting screw cylinder (42) is connected to the top end of the outer side of the transverse supporting rod (41) through a screw; the connecting screw cylinder (42); the lower supporting screw rod (43) is longitudinally connected in the connecting screw cylinder (42) in a threaded manner.
2. The high-safety construction prop according to claim 1, wherein a lower end of the lower support screw (43) is bolted with a support caster body (431); the upper end of the lower supporting screw rod (43) is connected with an adjusting wheel disc (432) through a bolt; the right side inside the adjusting wheel disc (432) is longitudinally movably inserted with a rotating holding rod (433).
3. A high safety construction prop according to claim 1, wherein the reinforcing and shaping prop member (5) comprises a receiving tube (51), a shaft receiving through hole (52), an extension screw (53) and a connecting cap (54), the shaft receiving through hole (52) being opened at an upper middle position of the receiving tube (51); one end of the extension screw rod (53) is in threaded connection with the lower side position inside the containing pipe (51), and the other end of the extension screw rod is in threaded connection with the left side position inside the connecting cap (54).
4. The high-safety support frame for building construction as claimed in claim 3, wherein a U-shaped chuck (541) is welded to the right side of the connecting cap (54); the right side of the U-shaped chuck (541) is in threaded connection with a jacking bolt (542).
5. The high-safety bracing frame for building construction as claimed in claim 4, wherein the top end of the inner side of the tightening bolt (542) is screwed with a clamping pad (5421).
6. A high safety construction prop according to claim 1, wherein the supporting and tightening plate assembly (6) comprises an upper supporting screw (61) and a tightening flange (62), the upper end of the upper supporting screw (61) is transversely bolted with the tightening flange (62); the tightly-propping flange plate (62) is a circular stainless steel flange plate.
7. The supporting frame for the building construction with high safety as claimed in claim 6, wherein a pressure sensor (621) is embedded in the middle position inside the abutting flange (62); positioning through holes (622) are longitudinally formed in the four corners inside the jacking flange plate (62); the lower part of the jacking flange plate (62) is welded with a steering insertion pipe (623).
8. The high-safety support frame for building construction as set forth in claim 7, wherein the steering insertion tube (623) is made of a stainless steel pipe; the four steering insertion tubes (623) are arranged in a cross shape.
9. A high-safety support frame for building construction according to claim 1, wherein the lifting hydraulic rams (2) and the lifting hydraulic rams (2) adjacent to each other in the front-rear direction are bolted to the upper part of the same support base plate (1).
10. The highly safe bracing frame for building construction according to claim 6, wherein the upper bracing screw (61) is screwed into the upper position inside the bracing column tube (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121358059.XU CN216713944U (en) | 2021-06-18 | 2021-06-18 | High support frame for construction of security |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121358059.XU CN216713944U (en) | 2021-06-18 | 2021-06-18 | High support frame for construction of security |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216713944U true CN216713944U (en) | 2022-06-10 |
Family
ID=81871277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121358059.XU Active CN216713944U (en) | 2021-06-18 | 2021-06-18 | High support frame for construction of security |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216713944U (en) |
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2021
- 2021-06-18 CN CN202121358059.XU patent/CN216713944U/en active Active
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