CN216184225U - Auxiliary mechanism for loading, unloading, transporting and erecting lifting device - Google Patents
Auxiliary mechanism for loading, unloading, transporting and erecting lifting device Download PDFInfo
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- CN216184225U CN216184225U CN202122480417.0U CN202122480417U CN216184225U CN 216184225 U CN216184225 U CN 216184225U CN 202122480417 U CN202122480417 U CN 202122480417U CN 216184225 U CN216184225 U CN 216184225U
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Abstract
The utility model belongs to the field of lifting devices, and relates to an auxiliary mechanism for loading, unloading, transporting and erecting a lifting device, which is arranged on the lifting device, wherein the front part of the lifting device is hinged with a first supporting leg, and the bottom of the first supporting leg is provided with a first trundle; the left and the right of the rear part of the lifting device are respectively correspondingly hinged with a second supporting leg, the bottom of the second supporting leg is provided with a second trundle, the left and the right of the lower part of the lifting device behind the second supporting leg are correspondingly provided with a fourth trundle, and a third trundle with the same height as the fourth trundle is arranged below the lifting device in front of the first supporting leg; and a first auxiliary supporting assembly is arranged between the first supporting leg and the lifting device, and a second auxiliary supporting assembly is arranged between the second supporting leg and the lifting device. The utility model can realize that a small amount of personnel can conveniently and quickly finish the loading, unloading and transportation and the operation erection of the lifting device in a narrow space, and improves the quick deployment capability of the lifting device.
Description
Technical Field
The utility model relates to an auxiliary mechanism for loading, unloading, transporting and erecting a lifting device, and belongs to the field of lifting devices.
Background
The existing modes of loading, unloading, transporting and erecting the lifting device generally adopt a manual or equipment hoisting mode, because the weight of the lifting device is large, the weight of some large lifting devices reaches 200kg, the range of manual transportation of two persons is exceeded, and multiple persons need to carry by using tools such as a lifting lever, but the space in a transport vehicle is narrow, the multiple persons are difficult to spread, the carrying and transshipment of the multiple persons cannot be realized, and the manual transportation has high labor intensity and low efficiency; if adopt equipment hoist and mount mode to carry out loading and unloading transportation and rise when erecting elevating gear, because the space in the transport vechicle is narrow and small, hoisting equipment receives the operating space limitation big, operates inconveniently, and is inefficient.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the defects of the prior art are overcome, the auxiliary mechanism for loading, unloading, transporting and erecting of the lifting device is provided, the loading, unloading, transporting and erecting of the lifting device can be rapidly completed in a narrow space by a small amount of personnel, and the rapid deployment capacity of the lifting device is improved.
The auxiliary mechanism for loading, unloading, transporting and erecting the lifting device is arranged below the lifting device, the front part of the lifting device is hinged with a first supporting leg, and the bottom of the first supporting leg is provided with a first trundle; the left and the right of the rear part of the lifting device are respectively correspondingly hinged with a second supporting leg, the bottom of the second supporting leg is provided with a second trundle, the left and the right of the lower part of the lifting device behind the second supporting leg are correspondingly provided with a fourth trundle, and a third trundle with the same height as the fourth trundle is arranged below the lifting device in front of the first supporting leg; and a first auxiliary supporting assembly is arranged between the first supporting leg and the lifting device, and a second auxiliary supporting assembly is arranged between the second supporting leg and the lifting device.
The first supporting leg and the second supporting leg are hinged to the lifting device respectively, and the first supporting leg and the second supporting leg can be folded and unfolded. The bottom of the lifting device is exposed at the four bottoms of the trundles, and the three trundles and the four trundles are high in consistent height and stability, so that the lifting device is moved in the transport vehicle with low height and gravity center, the lifting device is conveniently moved to a proper position to be reliably fixed, and the supporting device can be ensured to be in a horizontal state when being in the transport vehicle.
When the lifting device is detached from the transport vehicle, the lifting device is moved towards the outside of the transport vehicle until all the first support legs are outside the transport vehicle, the first support legs are opened, the first trundles are landed, and then the first fixed auxiliary support assemblies are opened; continuously moving the lifting device to the outside of the transport vehicle under the action of the fourth trundle and the first trundle until the second support leg is completely outside the transport vehicle, opening the second support leg to enable the second trundle to land, then opening the second fixed auxiliary support assembly, and pushing the lifting device to a vertical designated position under the action of the first trundle and the second trundle, so that the head of the lifting device is lifted, the second trundle and the second support leg are used as rotating shafts, the lifting device is erected, and when the lifting device is erected to form a 45-degree angle with the horizontal direction
During the contained angle, be connected elevating gear afterbody and the chassis of erectting, then continue to erect elevating gear to the position, fold supporting leg one and supporting leg two and pack up totally, make elevating gear get into and prepare operating condition. The utility model can realize that a small amount of personnel can quickly load, unload and transport the lifting device in a small space, and has convenient operation, and the utility model ensures that the lifting device can flexibly move in a transport vehicle and outside the transport vehicle, saves time and labor when the lifting device is loaded, unloaded and transported, ensures that the lifting device has firm positioning, convenient operation, safety, reliability, high efficiency and greatly improves the capacity of quick deployment of the lifting device under the labor intensity.
Preferably, the height adjusting supports are fixedly arranged between the first supporting leg and the first trundle and between the second supporting leg and the second trundle respectively, the height of the first supporting leg and the height of the second supporting leg can be adjusted by the height adjusting supports to adapt to transport vehicles with different heights, when the lifting device is detached from the transport vehicles, the first supporting leg is unfolded firstly, the height adjusting supports at the bottom of the first supporting leg are adjusted, the first trundle at the bottom of the first supporting leg is grounded, the lifting device keeps a horizontal state, then the second supporting leg is unfolded, the height adjusting supports at the bottom of the second supporting leg are adjusted, the second trundle at the bottom of the second supporting leg is grounded, the lifting device is guaranteed to keep a horizontal state, and the stability of the lifting device in the loading and unloading transportation process is improved.
Preferably, the first caster wheel and the third caster wheel both adopt universal wheels, the second caster wheel and the fourth caster wheel both adopt directional caster wheels with brakes, and the lifting device can flexibly change direction through the third caster wheel and also can stop at any time through the fourth caster wheel when moving in the transport vehicle; the lifting device can flexibly change direction through the first trundle wheel and can also stop at any time through the second trundle wheel when moving on the ground after being detached from the transport vehicle; therefore, the utility model is more flexible to use and more convenient to operate.
Preferably, the first auxiliary support assembly comprises a first inclined support, one end of the first inclined support is hinged with the upper part of the first support leg, the lower part of the first support leg is connected with the other end of the first inclined support through a first spring lock pin, a first inclined support connecting piece is arranged on a lifting device between the first support leg and the second support leg, a second spring lock pin is arranged on the lower part of the first inclined support connecting piece, and the first inclined support connecting piece can adopt a clamp piece; when the first supporting leg is in a folded and folded state, the first inclined strut is embedded in the U-shaped section groove of the first supporting leg, the lower part of the first inclined strut is fixedly connected with the lock pin of the first spring lock pin, after the first supporting leg is opened, the lock pin of the first spring lock pin is pressed down to be separated from the first inclined strut, and then the first inclined strut is opened, so that the first inclined strut is buckled on the lock pin of the second spring lock pin to be fixed; therefore, the firmness of the first supporting leg is improved by the first inclined support.
Preferably, the second auxiliary support component comprises a second inclined support, one end of the second inclined support is hinged with the upper part of the second support leg, the lower part of the second support leg is connected with the other end of the second inclined support through a third spring lock pin, a second inclined support connecting piece is further arranged on the lifting device between the first support leg and the second support leg, a fourth spring lock pin is arranged at the lower part of the second inclined support connecting piece, and a hoop part is also adopted as the second inclined support connecting piece; when the second supporting leg is in a folded and folded state, the second inclined strut is embedded in the U-shaped section groove of the second supporting leg, the lower part of the second inclined strut is fixedly connected with the lock pin of the third spring lock pin, after the second supporting leg is opened, the lock pin of the third spring lock pin is pressed down to be separated from the second inclined strut, and then the second inclined strut is opened, so that the second inclined strut is buckled on the lock pin of the fourth spring lock pin to be fixed; therefore, firmness of the second support leg is improved due to the second inclined support.
Preferably, the first support leg is connected with the lifting device through a first clamp, and the lower part of the first clamp is hinged with the first support leg. Because the elevating gear outer wall generally adopts circular structure, the supporting leg uses clamp one to be connected with elevating gear, and clamp one can laminate inseparabler with the elevating gear outer wall, and the fastness is higher.
Preferably, the support leg two-way is connected with the lifting device through the adapter and the clamp two, the periphery of the lifting device is connected with the upper portion of the clamp two, the lower portion of the clamp two is fixedly connected with the upper portion of the adapter, and the lower portion of the adapter is hinged with the support leg two correspondingly arranged left and right. Because the elevating gear outer wall generally adopts circular structure, the second supporting leg uses clamp two to be connected with elevating gear, and clamp two can laminate inseparabler with the elevating gear outer wall, and the fastness is higher.
Preferably, truckle three be connected with elevating gear through clamp three, the spliced pole that clamp three bottoms can be through fixed certain length is connected with truckle three to guarantee truckle three and truckle four highly uniform, make elevating gear can guarantee the horizontality when in the transport vechicle.
Compared with the prior art, the utility model has the beneficial effects that:
the lifting device is reasonable in structural design, the lifting device can flexibly move in the transport vehicle through the third truckle and the fourth truckle, the lifting device can flexibly move on the ground outside the transport vehicle through the first truckle and the second truckle, manual carrying is not needed, and labor force is reduced; the foldable support legs I and II are arranged, so that the foldable support leg is more flexible and convenient to use, and the bottoms of the support legs I and II are respectively provided with the height adjusting support, so that when the foldable support leg is dismounted from a transport vehicle, the lifting device can keep a horizontal state when the support legs I and II are sequentially grounded, the foldable support leg can adapt to transport vehicles with different heights, the applicability is strong, the lifting device is convenient to mount, dismount and transport, and the efficiency is high; when the lifting device erects, pin truckle two, lift lifting device's head, supporting leg two and truckle two can regard as the rotation axis, erect lifting device, make and erect in-process location firm, convenient operation, and reduced staff's work mildly, it is efficient to erect, fail safe nature is high.
Drawings
FIG. 1 is a schematic illustration of the present invention with the lifting device in a transport vehicle;
FIG. 2 is a schematic view of the present invention showing an open state of the support leg during unloading of the lift apparatus;
FIG. 3 is a schematic view of the present invention showing the opened state of the diagonal brace when the elevator apparatus is unloading;
FIG. 4 is a schematic view of the present invention showing the open state of the support legs two when the lifting device is unloaded;
FIG. 5 is a schematic view of the present invention showing the secondary open state of the diagonal brace when the elevator apparatus is unloading;
FIG. 6 is a schematic view of the present invention as the elevator is unloaded from the transporter;
FIG. 7 is a schematic view of the lifting device when erected to form an included angle of 45 degrees with the horizontal direction;
FIG. 8 is a schematic view of the lifting device when erecting is complete;
fig. 9 is a schematic view of the elevator apparatus in the preliminary operation.
In the figure: 1. a transport vehicle; 2. a lifting device; 3. a first hoop is clamped; 4. a second spring lock pin; 5. a first inclined strut connecting piece; 6. a spring lock pin IV; 7. a second inclined strut connecting piece; 8. a second hoop; 9. a fourth truckle; 10. a first caster wheel; 11. a second inclined strut; 12. a first spring lock pin; 13. a spring lock pin III; 14. a height adjusting support; 15. a first inclined strut; 16. a second caster wheel; 17. a first support leg; 18. a third truckle; 19. a third clamp; 20. a second support leg; 21. an adapter.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
as shown in fig. 1-9, the auxiliary mechanism for loading, unloading, transporting and erecting of the lifting device is arranged below the lifting device 2, the front part of the lifting device 2 is hinged with a first supporting leg 17, and the bottom of the first supporting leg 17 is provided with a first caster 10; the left and the right of the rear part of the lifting device 2 are respectively and correspondingly hinged with a second supporting leg 20, the bottom of the second supporting leg 20 is provided with a second caster wheel 16, the left and the right of the lower part of the lifting device 2 behind the second supporting leg 20 are correspondingly provided with a fourth caster wheel 9, and a third caster wheel 18 with the same height as the fourth caster wheel 9 is arranged below the lifting device 2 in front of the first supporting leg 17; a first auxiliary supporting assembly is further arranged between the first supporting leg 17 and the lifting device 2, and a second auxiliary supporting assembly is further arranged between the second supporting leg 20 and the lifting device 2.
In this embodiment:
height adjusting supports 14 are respectively and fixedly arranged between the first supporting leg 17 and the first caster wheel 10 and between the second supporting leg 20 and the second caster wheel 16, the height adjusting supports 14 can adjust the heights of the first supporting leg 17 and the second supporting leg 20 to adapt to the transport vehicles 1 with different heights, when the lifting device 2 is detached from the transport vehicles 1, the first supporting leg 17 is firstly unfolded, the height adjusting supports 14 at the bottom of the first supporting leg 17 are adjusted, the first caster wheel 10 at the bottom of the first supporting leg 17 is landed and the lifting device 2 keeps a horizontal state, then the second supporting leg 20 is unfolded, the height adjusting supports 14 at the bottom of the second supporting leg 20 are adjusted, the second caster wheel 16 at the bottom of the second supporting leg 20 is landed and the lifting device 2 is guaranteed to keep the horizontal state, and the stability of the lifting device 2 in the loading, unloading and transporting processes is improved.
The first caster wheel 10 and the third caster wheel 18 are universal wheels, the second caster wheel 16 and the fourth caster wheel 9 are directional caster wheels with brakes, and the lifting device 2 can flexibly change direction through the third caster wheel 18 and also can stop at any time through the fourth caster wheel 9 when moving in the transport vehicle 1; the lifting device 2 can flexibly change the direction through the first trundle 10 and can also stop at any time through the second trundle 16 when moving on the ground after being detached from the transport vehicle 1; therefore, the utility model is more flexible to use and more convenient to operate.
The first auxiliary support component comprises a first inclined support 15, one end of the first inclined support 15 is hinged with the upper part of the first support leg 17, the lower part of the first support leg 17 is connected with the other end of the first inclined support 15 through a first spring lock pin 12, a first inclined support connecting piece 5 is arranged on the lifting device 2 between the first support leg 17 and the second support leg 20, a second spring lock pin 4 is arranged on the lower part of the first inclined support connecting piece 5, and the first inclined support connecting piece 5 can adopt a clamp piece; when the first support leg 17 is in a folded and folded state, the first inclined strut 15 is embedded in the U-shaped section groove of the first support leg 17, the lower part of the first inclined strut 15 is fixedly connected with the lock pin of the first spring lock pin 12, after the first support leg 17 is opened, the lock pin of the first spring lock pin 12 is pressed down to be separated from the first inclined strut 15, then the first inclined strut 15 is opened, and the first inclined strut 15 is buckled on the lock pin of the second spring lock pin 4 to be fixed; therefore, the firmness of the first support leg 17 is improved by the first inclined support 15.
The auxiliary support assembly II comprises an inclined support II 11, one end of the inclined support II 11 is hinged with the upper part of the support leg II 20, the lower part of the support leg II 20 is connected with the other end of the inclined support II 11 through a spring lock pin III 13, an inclined support connecting piece II 7 is arranged on the lifting device 2 between the support leg I17 and the support leg II 20, a spring lock pin IV 6 is arranged at the lower part of the inclined support connecting piece II 7, and a clamp piece is also adopted as the inclined support connecting piece II 7; when the second support leg 20 is in a folded and folded state, the second inclined support 11 is embedded in the U-shaped section groove of the second support leg 20, the lower part of the second inclined support 11 is fixedly connected with the lock pin of the third spring lock pin 13, after the second support leg 20 is opened, the lock pin of the third spring lock pin 13 is pressed down to be separated from the second inclined support 11, then the second inclined support 11 is opened, and the second inclined support 11 is buckled on the lock pin of the fourth spring lock pin 6 to be fixed; therefore, the firmness of the second support leg 20 is improved by the second inclined support 11.
The first support leg 17 is connected with the lifting device 2 through the first hoop 3, and the lower portion of the first hoop 3 is hinged to the first support leg 17. Because 2 outer walls of elevating gear generally adopt circular structure, supporting leg 17 uses clamp 3 to be connected with elevating gear 2, and clamp 3 can be laminated inseparabler with 2 outer walls of elevating gear, and the fastness is higher.
The second support leg 20 is connected with the lifting device 2 through the adapter 21 and the second clamp 8, the periphery of the lifting device 2 is connected with the upper portion of the second clamp 8, the lower portion of the second clamp 8 is fixedly connected with the upper portion of the adapter 21, and the lower portion of the adapter 21 is hinged to the second support leg 20 which is correspondingly arranged left and right. Because 2 outer walls of elevating gear generally adopt circular structure, two 20 supporting legs use two 8 of clamps to be connected with elevating gear 2, and two 8 of clamps and 2 outer walls of elevating gear can laminate inseparabler, and the fastness is higher.
The third truckle 18 is connected with the lifting device 2 through the third hoop 19, and the bottom of the third hoop 19 can be connected with the third truckle 18 through a connecting column with a fixed certain length so as to ensure that the third truckle 18 is in height consistency with the fourth truckle 9, so that the lifting device 2 can ensure the horizontal state in the transport vehicle 1.
In the specific working process, (as shown in figure 1), the lifting device 2 is arranged in the transport vehicle 1, the first support leg 17 and the second support leg 20 are both in a folding state, the first inclined support 15 and the second inclined support 11 are respectively folded and embedded on the first support leg 17 and the second support leg 20, and then the lifting device 2 can stably move in the transport vehicle 1 under the action of the third caster wheel 18 and the fourth caster wheel 9; (see fig. 2) when the lifting device 2 is detached from the transport vehicle 1, the lifting device 2 is moved towards the outside of the transport vehicle 1 until the first support leg 17 is completely outside the transport vehicle 1, the first support leg 17 is unfolded, the height adjusting support 14 at the bottom of the first support leg 17 is adjusted, and the first caster 10 is landed; (as shown in fig. 3), the lock pin of the first spring lock pin 12 is pressed down to be separated from the first inclined strut 15, and then the first inclined strut 15 is opened, so that the first inclined strut 15 is buckled on the lock pin of the second spring lock pin 4 to be fixed; (see fig. 4) continuing to move the lifting device 2 to the outside of the transport vehicle 1 under the action of the four casters 9 and the first casters 10 until the second support leg 20 is completely outside the transport vehicle 1, unfolding the second support leg 20, adjusting the height adjusting support 14 at the bottom of the second support leg 20, and landing the second casters 16 at the bottom of the second support leg 20; (as shown in fig. 5), the lock pin of the spring lock pin III 13 is pressed down to be separated from the second inclined strut 11, then the second inclined strut 11 is opened, the second inclined strut 11 is buckled on the lock pin of the spring lock pin IV 6 to be fixed, and the lifting device 2 is detached from the transport vehicle 1 (as shown in fig. 6); (as shown in fig. 7), under the action of the first caster wheel 10 and the second caster wheel 16, the lifting device 2 is pushed to a vertical designated position, the second caster wheel 16 is locked, then the head of the lifting device 2 is lifted, the second caster wheel 16 and the second support leg 20 are used as rotating shafts, the lifting device 2 is erected, and when the lifting device 2 is erected to form an included angle of 45 degrees with the horizontal direction, the tail of the lifting device 2 is connected with the erecting chassis in a hinged mode; (as shown in fig. 8) continuing to erect the lifting device 2 to a proper position, respectively retracting and embedding the first inclined strut 15 and the second inclined strut 11 on the first supporting leg 17 and the second supporting leg 20, and then completely folding and retracting the first supporting leg 17 and the second supporting leg 20 to enable the lifting device 2 to enter a standby working state (as shown in fig. 9).
And the first support leg 17 and the second support leg 20 are respectively hinged with the lifting device 2, so that the first support leg 17 and the second support leg 20 can be folded and unfolded. The bottom of the four 9 casters exposes the bottom of the lifting device 2, and the three 18 casters have high consistent stability with the four 9 casters, so that the lifting device 2 is guaranteed to move in the transport vehicle 1 with low height and gravity center, the lifting device 2 is convenient to move to a proper position to be reliably fixed, and the lifting device 2 can be guaranteed to be in a horizontal state in the transport vehicle 1.
Claims (8)
1. The utility model provides an auxiliary mechanism that is used for elevating gear's loading and unloading transportation and plays to erect, sets up on elevating gear (2), its characterized in that: the front part of the lifting device (2) is hinged with a first supporting leg (17), and the bottom of the first supporting leg (17) is provided with a first caster (10); the left and right sides of the rear part of the lifting device (2) are respectively and correspondingly hinged with a second supporting leg (20), the bottom of the second supporting leg (20) is provided with a second trundle (16), the left and right sides of the lower part of the lifting device (2) behind the second supporting leg (20) are correspondingly provided with a fourth trundle (9), and a third trundle (18) with the same height as the fourth trundle (9) is arranged below the lifting device (2) in front of the first supporting leg (17); a first auxiliary supporting assembly is arranged between the first supporting leg (17) and the lifting device (2), and a second auxiliary supporting assembly is arranged between the second supporting leg (20) and the lifting device (2).
2. The auxiliary mechanism for handling and erecting a lifting device according to claim 1, wherein: height adjusting supports (14) are respectively and fixedly arranged between the first support leg (17) and the first caster wheel (10) and between the second support leg (20) and the second caster wheel (16).
3. The auxiliary mechanism for handling and erecting a lifting device according to claim 1, wherein: the first caster wheel (10) and the third caster wheel (18) both adopt universal wheels, and the second caster wheel (16) and the fourth caster wheel (9) both adopt directional caster wheels with brakes.
4. The auxiliary mechanism for handling and erecting a lifting device according to claim 1, wherein: and the first auxiliary support assembly comprises a first inclined support (15), one end of the first inclined support (15) is hinged with the upper part of the first support leg (17), the lower part of the first support leg (17) is connected with the other end of the first inclined support (15) through a first spring lock pin (12), a first inclined support connecting piece (5) is arranged on the lifting device (2) between the first support leg (17) and the second support leg (20), and a second spring lock pin (4) is arranged on the lower part of the first inclined support connecting piece (5).
5. The auxiliary mechanism for handling and erecting a lifting device according to claim 1, wherein: and the second auxiliary support assembly comprises a second inclined support (11), one end of the second inclined support (11) is hinged with the upper part of the second support leg (20), the lower part of the second support leg (20) is connected with the other end of the second inclined support (11) through a third spring lock pin (13), a second inclined support connecting piece (7) is further arranged on the lifting device (2) between the first support leg (17) and the second support leg (20), and a fourth spring lock pin (6) is arranged on the lower part of the second inclined support connecting piece (7).
6. The auxiliary mechanism for handling and erecting a lifting device according to claim 1, wherein: the first support leg (17) is connected with the lifting device (2) through the first hoop (3), and the lower part of the first hoop (3) is hinged with the first support leg (17).
7. The auxiliary mechanism for handling and erecting a lifting device according to claim 1, wherein: support leg two (20) are connected with elevating gear (2) through adaptor (21) and clamp two (8), and elevating gear (2)'s periphery is connected on clamp two (8) upper portion, and clamp two (8) lower part fixed connection adaptor (21) upper portion, and the support leg two (20) that corresponds the setting about adaptor (21) lower part is articulated respectively.
8. The auxiliary mechanism for handling and erecting a lifting device according to claim 1, wherein: the third caster (18) is connected with the lifting device (2) through a third hoop (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122480417.0U CN216184225U (en) | 2021-10-14 | 2021-10-14 | Auxiliary mechanism for loading, unloading, transporting and erecting lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122480417.0U CN216184225U (en) | 2021-10-14 | 2021-10-14 | Auxiliary mechanism for loading, unloading, transporting and erecting lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216184225U true CN216184225U (en) | 2022-04-05 |
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ID=80866560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122480417.0U Active CN216184225U (en) | 2021-10-14 | 2021-10-14 | Auxiliary mechanism for loading, unloading, transporting and erecting lifting device |
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| Country | Link |
|---|---|
| CN (1) | CN216184225U (en) |
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2021
- 2021-10-14 CN CN202122480417.0U patent/CN216184225U/en active Active
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