CN113955628A - Hoisting device - Google Patents

Abstract

The invention discloses a hoisting device, and belongs to the technical field of hoisting. The hoisting device comprises a hoisting base body and two hoisting units which are respectively arranged at two ends of the hoisting base body along a first direction, wherein each hoisting unit comprises two hook claws and a rotary driving assembly, and the two hook claws are respectively arranged at two ends of the bottom of the hoisting base body along a second direction; the hook claw comprises a connecting piece and a bearing claw, one end of the connecting piece is rotatably connected with the hoisting base body, the other end of the connecting piece is connected with the bearing claw, and the bearing claw and the connecting piece are arranged in an L-shaped structure; the rotary driving component is used for driving the two hook claws to rotate for a preset angle along opposite directions respectively so that the bearing claws of the two hook claws can be hidden below the hoisting base body or unfolded outside the hoisting base body. The hook claws are used for hooking the longitudinal beams of the battery box bodies, the distance difference between the longitudinal beams of different battery box bodies is small, and the compatibility of the hoisting device can be effectively improved; the hook claw extends into the lower part of the longitudinal beam in a rotating mode, and the response speed of the hook claw is higher.

Description

Hoisting device

Technical Field

The invention relates to the technical field of hoisting, in particular to a hoisting device.

Background

With the rapid development of new energy automobile industry, the urgent needs of various places for pollution control by heavy trucks are met, and the electric driving of the heavy trucks is becoming an important component of atmospheric pollution control and green low-carbon development in the transportation field. The electric heavy truck generally comprises two modes of charging and battery replacement, compared with the charging mode, the battery replacement mode has the characteristics of short battery replacement time, high operation efficiency, long battery service life, low construction difficulty of a battery charging and replacing station and the like, and the battery replacement mode has advantages in the aspects of energy supply and trip rate according to attributes such as heavy truck assets and high trip rate.

The conventional battery replacing station generally adopts truss type hoisting equipment to perform battery replacing operation, and in order to fix batteries and hoist the batteries conveniently, as shown in fig. 1-2, a plurality of cross beams 11 'and longitudinal beams 12' are respectively arranged at the tops of different battery box bodies 1 ', and the hook claws of the conventional hoisting equipment extend into the lower part of the cross beams 11' of the battery box bodies 1 'in a translation manner to hook up the battery box bodies 1', so that the hoisting equipment needs to have compatibility in order to match different batteries. However, the distance between the cross beams 11 'of different battery cases 1' is different, and for the battery case 1 'with the larger distance between the cross beams 11', the extension displacement of the hook claw is insufficient, and the lifting cannot be realized.

Disclosure of Invention

The invention aims to provide a hoisting device which can be matched with different battery boxes, is high in compatibility and has high claw hooking response speed.

In order to realize the purpose, the following technical scheme is provided:

the utility model provides a hoisting device, includes the hoist and mount base member and two locate respectively the hoist and mount unit at the both ends of hoist and mount base member along first direction, the hoist and mount unit includes:

the two hook claws are respectively arranged at two ends of the bottom of the hoisting base body along a second direction, and the second direction is vertical to the first direction; the hook claw comprises a connecting piece and a bearing claw, one end of the connecting piece is rotatably connected with the hoisting base body, the other end of the connecting piece is connected with the bearing claw, and the bearing claw and the connecting piece are arranged in an L-shaped structure;

and the rotary driving component is used for driving the two hook claws to rotate for a preset angle in opposite directions respectively so as to enable the two bearing claws of the hook claws to be hidden below the hoisting base body or be unfolded outside the hoisting base body to support the piece to be hoisted.

As an alternative of the hoisting device, the free end of the supporting claw is provided with a supporting part, and the upper surface of the supporting part is lower than the upper surface of the supporting claw.

As an alternative to the lifting device, the upper surface of the bearing part is parallel to the horizontal plane.

As an alternative to the hoisting device, the hoisting device further comprises:

the position detection assembly is used for detecting whether the piece to be hoisted is positioned at the hoisting position on the hoisting base body;

the rotary driving component can be selectively started or stopped according to the detection result of the position detection component.

As an alternative to the hoisting device, the hoisting device further comprises:

and the lifting driving assembly is used for driving the lifting base body to lift, and can be selectively started or stopped according to the detection result of the position detection assembly.

As an alternative to the lifting device, the position detection assembly comprises:

the shielding piece is connected with the hoisting base body in a sliding manner; the shielding piece comprises a contact part positioned below the hoisting base body and a shielding part connected to the contact part, and the contact part can be abutted against the piece to be hoisted;

the elastic piece is used for providing reset elastic force for the shielding piece so that the shielding piece always has a downward movement trend;

a proximity switch for sensing the shade.

As an alternative to the hoisting device, the shield further comprises a sliding portion connected to the contact portion, the sliding portion being connected to the shield portion through the hoisting base body in a sliding manner;

the outer diameter of the contact portion is larger than that of the sliding portion;

and/or the outer diameter of the shielding part is larger than that of the sliding part.

The hoisting device further comprises two position detection pieces, wherein one of the two position detection pieces is used for detecting whether the bearing claw is hidden below the hoisting base body, and the other one is used for detecting whether the bearing claw is unfolded outside the hoisting base body so as to support the piece to be hoisted;

the rotary driving component can be selectively started or stopped according to the detection result of the position detection piece.

As an alternative to the hoist, the rotary drive assembly comprises:

the two adapter pieces are arranged in one-to-one correspondence with the two hook claws; one end of the adapter is fixedly connected with the connecting piece of the corresponding hook claw, and the other end of the adapter is provided with a rotary connecting piece;

the linkage piece is arranged on the hoisting base body in a sliding manner along the first direction; two ends of the linkage piece along the second direction are respectively provided with a long hole which is in one-to-one correspondence with the two rotary connecting pieces, one end of each rotary connecting piece is fixedly connected with the corresponding adapter piece, and the other end of each rotary connecting piece is inserted into the corresponding long hole and can move along the long hole;

and the driving piece is used for driving the linkage piece to slide along the hoisting base body.

As an alternative to the hoisting device, the rotation driving assembly further comprises two limiting members, and the linkage member can slide between the two limiting members.

Compared with the prior art, the invention has the beneficial effects that:

according to the hoisting device, the to-be-hoisted piece, such as a battery box body, is hoisted by the hook claw, the distance difference between the longitudinal beams of different battery box bodies is small, and the compatibility of the hoisting device can be effectively improved; collude the below that the claw adopted rotatory mode to stretch into the longeron, compare with the claw of colluding of translation formula among the prior art, collude claw response speed faster.

Drawings

Fig. 1 is a schematic structural diagram of a conventional battery case;

FIG. 2 is a schematic structural diagram of another conventional battery case;

FIG. 3 is a schematic structural diagram of a hoisting device in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of the hoisting device with the hook claw in the extended position according to the embodiment of the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a side view of FIG. 4;

FIG. 7 is an enlarged view of portion B of FIG. 6;

fig. 8 is a schematic structural view of the hoisting device in the embodiment of the present invention when the hook claw is in the hidden position.

Reference numerals:

1', a battery box body; 11', a beam; 12', longitudinal beams;

1. hoisting a base body;

2. hoisting the unit; 21. hooking claws; 211. a connecting member; 212. a supporting claw; 2121. a bearing part; 21211. a limiting bulge; 22. a rotary drive assembly; 221. a linkage member; 2211. a long hole; 222. a drive member; 223. an adapter; 224. a rotating connector; 225. a slide rail; 226. a limiting member;

31. a first position detecting member; 32. a second position detecting member;

4. a position detection component; 41. a shield; 411. a contact portion; 412. a shielding portion; 413. a sliding part; 42. a proximity switch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 3 to 8, this embodiment provides a hoisting device, which includes a hoisting base 1 and two hoisting units 2 respectively disposed at two ends of the hoisting base 1 along a first direction, where the hoisting unit 2 includes two hook claws 21 and a rotation driving assembly 22, the two hook claws 21 are respectively disposed at two ends of the bottom of the hoisting base 1 along a second direction, and the second direction is perpendicular to the first direction. Collude claw 21 and include connecting piece 211 and bearing claw 212, the one end and the hoist and mount base member 1 of connecting piece 211 are rotated and are connected, and the other end is connected with bearing claw 212, and bearing claw 212 is L shape structure setting with connecting piece 211. The rotation driving component 22 is used for driving the two hook claws 21 to rotate in opposite directions by a preset angle respectively, so that the bearing claws 212 of the two hook claws 21 can be hidden under the hoisting base body 1 or spread outside the hoisting base body 1 to support a to-be-hoisted piece, which is a battery box in the embodiment.

According to the hoisting device, the longitudinal beams of the battery box bodies are hooked by the hook claws 21, the distance difference between the longitudinal beams of different battery box bodies is small, and the compatibility of the hoisting device can be effectively improved; the hook claw 21 extends into the lower part of the longitudinal beam in a rotating mode, and compared with a translational hook claw in the prior art, the response speed of the hook claw 21 is higher.

Optionally, in order to avoid interference with the battery box during rotation of the hook claw 21, the free end of the supporting claw 212 is provided with a supporting part 2121, and the upper surface of the supporting part 2121 is lower than the upper surface of the supporting claw 212. Further, the upper surface of the support part 2121 is parallel to the horizontal plane, which can ensure that the support part 2121 can smoothly extend into the lower part of the longitudinal beam of the battery box body, and can ensure that the battery box body can be stably lifted, thereby avoiding the phenomenon of sliding.

Optionally, the upper surface of the end of the supporting part 2121 is provided with a limiting protrusion 21211, and the limiting protrusion 21211 slightly protrudes, so that the rotation of the hook claw 21 is not interfered, and the limiting function can be performed on the longitudinal beam of the battery box.

In the present embodiment, the hook claw 21 has a hidden position and an extended position, and preferably, in the hidden position, the supporting claw 212 of the hook claw 21 is hidden below the hoisting base 1 and extends along the first direction; in the extended position, the holding claw 212 of the hook claw 21 is extended outside the hoisting base 1 and extends in the second direction. The hook 21 needs to be rotated by 90 ° when it is switched from the hidden position to the deployed position.

Optionally, the hoisting device further includes two position detection pieces, which are respectively marked as a first position detection piece 31 and a second position detection piece 32, the first position detection piece 31 is used for detecting whether the supporting claw 212 is hidden below the hoisting base body 1, and the second position detection piece 32 is used for detecting whether the supporting claw 212 is expanded outside the hoisting base body 1 to support the to-be-hoisted piece. Further, the rotary drive assembly 22 can be selectively started or stopped according to the detection results of the two position detecting members. Specifically, the hook 21 is driven by the rotation driving component 22 to rotate, and when the hook 21 moves to the hidden position, the first position detecting component 31 is triggered, and at this time, the rotation driving component 22 can be controlled to stop, so that the hook 21 is kept at the hidden position; correspondingly, when the hook claw 21 moves to the extended position, the second position detector 32 is triggered, and the rotation driving component 22 is controlled to stop, so that the hook claw 21 is kept at the extended position.

Optionally, the rotary driving assembly 22 includes a linkage 221, a driving element 222, and two adapters 223, where the two adapters 223 are disposed in one-to-one correspondence with the two hooks 21; one end of the adapter 223 is fixedly connected to the corresponding connector 211 of the hook claw 21, and the other end is provided with a rotary connector 224. Illustratively, the rotational connection 224 is a cam bearing follower. The linkage piece 221 is slidably disposed on the hoisting base 1 along the first direction, the driving piece 222 is used for driving the linkage piece 221 to slide along the first direction relative to the hoisting base 1, and one driving piece 222 is used for driving the two hooks 21 to synchronously move, which is beneficial to reducing the cost. The driving member 222 is exemplarily an electric push rod, and in other embodiments, the driving member 222 may also be other linear driving mechanisms, which is not limited herein. Specifically, the hoisting base 1 is provided with a slide rail 225, and the linkage member 221 slides along the slide rail 225, so that the slide rail 225 can be used for guiding and the linkage member 221 can slide more smoothly. Further, the rotation driving assembly 22 further includes two limiting members 226, the two limiting members 226 are respectively located at two ends of the sliding rail 225, the linkage member 221 can slide between the two limiting members 226, when the hook claw 21 is located at the hidden position, the linkage member 221 can abut against one of the limiting members 226, when the hook claw 21 is located at the extended position, the linkage member 221 can abut against the other limiting member 226, so as to prevent the linkage member 221 from continuously sliding under the driving of the driving member 222 when the position detecting member is accidentally disabled, and thus, the safety protection effect is achieved. The two ends of the link 221 along the second direction are both provided with two long holes 2211 corresponding to the two rotary connectors 224 one to one, one end of each rotary connector 224 is fixedly connected to the corresponding adapter 223, and the other end is inserted into the corresponding long hole 2211 and can move along the long hole 2211. The link 221 slides in the first direction under the driving of the driving element 222, and the rotating link 224 can move in the corresponding slot 2211, so as to drive the hook claw 21 to rotate through the adaptor 223, so that the hook claw 21 is switched between the hidden position and the extended position. Of course, the rotation driving assembly 22 is not limited to the above structure, as long as it can drive the two hooks 21 of the same hoisting unit 2 to rotate in opposite directions by a preset angle, and the rotation driving assembly is not limited herein.

Illustratively, the first position detecting member 31 and the second position detecting member 32 are both photosensors. Specifically, two photoelectric sensors are respectively located at two sides of one of the adapters 223, and when the hook claw 21 is located at the hidden position, the adapter 223 can shield one of the photoelectric sensors (i.e., the first position detecting member 31) to trigger the photoelectric sensor; when the hook claw 21 is in the extended position, the adaptor 223 can shield another photoelectric sensor (i.e., the second position detecting member 32) to trigger the photoelectric sensor.

Optionally, the hoisting device further comprises a position detection assembly 4, and the position detection assembly 4 is used for detecting whether the piece to be hoisted is located at the hoisting position on the hoisting base body 1. The rotary drive unit 22 can be selectively started or stopped according to the detection result of the position detection unit 4. Further, the hoisting device further comprises a lifting driving assembly, the lifting driving assembly is used for driving the hoisting base body 1 to lift, and the lifting driving assembly can be selectively started or stopped according to the detection result of the position detection assembly 4. The lifting driving component can be a lifting driving mechanism of the existing hoisting equipment (truss) and is not described in detail herein. In addition, the lifting driving assembly may have other structures as long as it can drive the lifting base 1 to lift, and is not limited herein. When the battery box body is located at the hoisting position on the hoisting base body 1, the hoisting base body 1 is butted with the battery box body, and the butting mode of the hoisting base body 1 and the battery box body is the prior art and is not described herein again. When the battery box body is hoisted, after the hoisting base body 1 is in butt joint with the battery box body, the position detection assembly 4 is triggered, the lifting driving assembly is controlled to stop at the moment, the hoisting base body 1 is kept at the target height, the rotating driving assembly 22 is controlled to act, the hook claw 21 is driven to move to the unfolding position, and the battery box body is hooked.

Preferably, the lifting driving component can selectively accelerate or decelerate to drive the lifting base body 1 to lift according to the detection result of the position detection component 4. Specifically, when the battery box body is hung to a target position and the battery box body needs to be put down, the rotary driving assembly 22 drives the hook claw 21 to reset to a hidden position, the battery box body is released, the hoisting base body 1 can slowly rise under the driving of the lifting driving assembly at the moment, along with the rising of the hoisting base body 1 and the leaving of the target height, the position detection assembly 4 releases a trigger state, the hoisting base body 1 can be driven by the controllable lifting driving assembly to quickly rise at the moment, and the hoisting working efficiency is improved.

Specifically, the position detection assembly 4 comprises a shielding piece 41, an elastic piece and a proximity switch 42, wherein the shielding piece 41 is connected with the hoisting base body 1 in a sliding manner; the shielding member 41 comprises a contact portion 411 located below the hoisting base body 1, a shielding portion 412 located above the hoisting base body 1, and a sliding portion 413 connected between the contact portion 411 and the shielding portion 412, specifically, the sliding portion 413 is connected to the contact portion 411, the sliding portion 413 slidably penetrates through the hoisting base body 1 and is connected to the shielding portion 412, the sliding portion 413 is inserted into the installation through hole of the hoisting base body 1 and can slide up and down along the installation through hole, and the contact portion 411 can abut against a member to be hoisted (i.e., a battery box in the embodiment); the elastic member is installed in the installation through hole and is used for providing a return elastic force to the shielding member 41 so that the shielding member 41 always has a downward movement tendency; the proximity switch 42 is used to sense the occlusion 412. When hoist and mount base member 1 descends to being close to the target height under lift drive assembly's drive, contact portion 411 at first contacts with the battery box, then promote the sliding part 413 of shielding piece 41 and upwards slide along the installation through-hole to compress the elastic component, until proximity switch 42 senses shielding part 412, proximity switch 42 is triggered, show that hoist and mount base member 1 reaches the target height, so set up, can accurately detect whether hoist and mount base member 1 reaches the target height, and can not interfere hoist and mount base member 1 and descend, can not interfere hoist and mount base member 1 and butt joint with the battery box. The position detection unit 4 is not limited to the above-described structure.

Since the top of the battery case is of a frame structure, in order to ensure that the contact portion 411 can contact with the battery case, and to improve the detection accuracy, the outer diameter of the contact portion 411 is larger than that of the sliding portion 413. Similarly, in order to make the shielding portion 412 easily sensed by the proximity switch 42 and improve the detection accuracy, the outer diameter of the shielding portion 412 is larger than the outer diameter of the sliding portion 413.

Exemplarily, the working principle of the hoisting device of the embodiment is as follows:

the process of hoisting the battery box body to rise comprises the following steps: the hoisting base body 1 moves to the position right above the battery box body under the driving of hoisting equipment (such as a truss), the hoisting base body 1 is driven to descend by the lifting driving assembly, the contact part 411 of the shielding piece 41 is in contact with the battery box body, the shielding piece 41 is gradually jacked up until the shielding part 412 of the shielding piece 41 triggers the proximity switch 42, at the moment, the lifting driving assembly stops, the hoisting base body 1 stops descending, meanwhile, the driving piece 222 drives the linkage piece 221 to slide along the first direction, the hook claw 21 is driven to rotate through the rotary connecting piece 224 and the adapter piece 223, when the hook claw 21 is switched from the hidden position to the unfolded position, the second position detecting piece 32 is triggered, the bearing claw 212 of the hook claw 21 extends into the position below the longitudinal beam of the battery box body, at the moment, the driving piece 222 can be controlled to stop, the lifting driving assembly is controlled to start again, and the battery box body is hoisted.

The process of hoisting the battery box body to descend comprises the following steps: the hoisting base body 1 moves to the position right above the empty battery position of the heavy truck needing to replace the battery under the driving of hoisting equipment (such as a truss), the hoisting base body 1 is driven by the lifting driving component to descend, the battery box body falls into the empty battery position of the heavy truck, and will trigger the battery in-place sensor of the heavy truck, at this time, the hoisting device can be controlled to reset, the driving member 222 drives the linkage member 221 to slide along the first direction, and the hook claw 21 is driven to rotate by the rotating connecting piece 224 and the adapter 223, when the hook claw 21 is switched from the unfolding position to the hiding position, the first position detecting piece 31 is triggered, and then the driving part 222 is controlled to stop the action, and the lifting driving component is controlled to start to drive the lifting base body 1 to slowly rise until the shielding part 412 of the shielding piece 41 does not trigger the proximity switch 42 any more, which indicates that the battery box body is completely separated from the lifting base body 1, and at this time, the lifting driving component can accelerate the lifting driving of the lifting base body 1.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. The utility model provides a hoisting device, its characterized in that includes hoist and mount base member (1) and two locate respectively hoist and mount unit (2) at the both ends of hoist and mount base member (1) along first direction, hoist and mount unit (2) include:

the two hook claws (21) are respectively arranged at two ends of the bottom of the hoisting base body (1) along a second direction, and the second direction is vertical to the first direction; the hook claw (21) comprises a connecting piece (211) and a bearing claw (212), one end of the connecting piece (211) is rotatably connected with the hoisting base body (1), the other end of the connecting piece is connected with the bearing claw (212), and the bearing claw (212) and the connecting piece (211) are arranged in an L-shaped structure;

and the rotary driving component (22) is used for driving the two hook claws (21) to rotate in opposite directions for a preset angle respectively so as to enable the bearing claws (212) of the two hook claws (21) to be hidden below the hoisting base body (1) or to be unfolded outside the hoisting base body (1) to support a piece to be hoisted.

2. Lifting device according to claim 1, characterised in that the free end of the holding claw (212) is provided with a holding part (2121), the upper surface of the holding part (2121) being lower than the upper surface of the holding claw (212).

3. Lifting device according to claim 2, characterised in that the upper surface of the bearer (2121) is parallel to the horizontal plane.

4. The hoisting device of claim 1, further comprising:

the position detection assembly (4) is used for detecting whether the piece to be hoisted is located at the hoisting position on the hoisting base body (1);

the rotary driving component (22) can be selectively started or stopped according to the detection result of the position detection component (4).

5. The hoisting device of claim 4, further comprising:

and the lifting driving component is used for driving the lifting base body (1) to lift, and the lifting driving component can be selectively started or stopped according to the detection result of the position detection component (4).

6. Hoisting device according to claim 4, characterized in that the position detection assembly (4) comprises:

the shielding piece (41) is connected with the hoisting base body (1) in a sliding manner; the shielding piece (41) comprises a contact part (411) positioned below the hoisting base body (1) and a shielding part (412) connected to the contact part (411), and the contact part (411) can be abutted to the piece to be hoisted;

an elastic member for providing a return elastic force to the shutter (41) so that the shutter (41) always has a downward movement tendency;

a proximity switch (42) for sensing the occlusion (412).

7. Hoisting device according to claim 6, wherein the shield (41) further comprises a sliding portion (413) connected to the contact portion (411), the sliding portion (413) being connected to the shield portion (412) sliding through the hoisting base (1);

the outer diameter of the contact portion (411) is larger than the outer diameter of the sliding portion (413);

and/or the outer diameter of the shielding part (412) is larger than the outer diameter of the sliding part (413).

8. Hoisting device according to claim 1, characterized in that it further comprises two position detection members, one of which is used to detect whether the holding claw (212) is hidden under the hoisting base body (1) and the other is used to detect whether the holding claw (212) is spread out outside the hoisting base body (1) to support the piece to be hoisted;

the rotary driving component (22) can be selectively started or stopped according to the detection result of the position detection piece.

9. Hoisting device according to claim 8, characterized in that the rotary drive assembly (22) comprises:

the two adapter pieces (223) are arranged in one-to-one correspondence with the two hook claws (21); one end of the adapter piece (223) is fixedly connected with the connecting piece (211) of the corresponding hook claw (21), and the other end of the adapter piece is provided with a rotary connecting piece (224);

a link (221) slidably provided in the hoisting base (1) in the first direction; two ends of the linkage piece (221) in the second direction are respectively provided with a long hole (2211) which is in one-to-one correspondence with the two rotary connecting pieces (224), one end of each rotary connecting piece (224) is fixedly connected with the corresponding adapter piece (223), and the other end of each rotary connecting piece is inserted into the corresponding long hole (2211) and can move along the long hole (2211);

the driving piece (222) is used for driving the linkage piece (221) to slide along the hoisting base body (1).

10. The hoisting device according to claim 9, wherein the rotary drive assembly (22) further comprises two stoppers (226), and the link member (221) is slidable between the two stoppers (226).

Images