CN218588579U - Lifting device and storage cabinet - Google Patents

Abstract

The utility model relates to a mechanical transmission technical field provides a elevating gear and locker. The lifting device comprises a carrying container, a linear transmission mechanism and a hovering mechanism; the linear transmission mechanism is provided with a transmission component and a rotating shaft for driving the transmission component to move, and the rotating shaft drives the loading container to move through the transmission component; the hovering mechanism comprises a stopping wheel, a clamping jaw and an adjusting assembly, the stopping wheel is fixed on the rotating shaft, the stopping wheel is provided with a one-way tooth, the clamping jaw is connected to the adjusting assembly, the adjusting assembly is suitable for driving the clamping jaw to switch between a stopping position and an unlocking position, the clamping jaw is clamped with the one-way tooth to stop the stopping wheel at the stopping position, and the clamping jaw is separated from the one-way tooth at the unlocking position. The utility model provides a lifting device disposes the mechanism of hovering at lifting device, all can realize hovering at the arbitrary height of carrying the thing container, and simple structure is reliable, and is with low costs, can maintain the state of hovering for a long time and not consume the energy.

Description

Lifting device and storage cabinet

Technical Field

The utility model relates to a mechanical transmission technical field especially relates to elevating gear and locker.

Background

The transmission mechanism is widely applied to various fields, and can be used for lifting devices, translation devices and the like. Taking the lifting device as an example, the lifting device can be driven by stretching or rotating. When the lifting device realizes telescopic motion through rotation driving and rises to a high position, the lifting device needs to hover so as to facilitate a user to take and place articles; or, when the power failure occurs to the equipment, the lifting device also needs to keep hovering, so that the lifted device is prevented from falling under the action of gravity, and the lifted device is prevented from impacting other parts.

Under some circumstances, elevating gear disposes the motor brake, locks and hovers through electric brake, can promote elevating gear's cost, and whole transmission system maintains the area for a long time and carries the state, can weaken the durability, adopts the scheme of electromagnetism brake unable the reseing under the outage condition. In some cases, the locking function of the stepping motor or the servo motor itself needs to be maintained in a power-on state, such as a locked-rotor state, the motor generates heat seriously, cannot be maintained for a long time or needs a large heat dissipation capacity, and has high energy consumption, and meanwhile, a power supply with higher power needs to be configured. Some mechanical hovering schemes can only realize fixed-point hovering and cannot realize hovering at any position. Based on the foregoing, there is still no suitable solution to the hovering problem of the lifting device, which is to be solved.

SUMMERY OF THE UTILITY MODEL

The present invention aims to solve at least one of the technical problems existing in the related art. Therefore, the utility model provides a lifting device disposes the mechanism of hovering at lifting device, all can realize hovering at the arbitrary height of carrying the thing container, and simple structure is reliable, and is with low costs, can maintain the state of hovering for a long time and not consume the energy.

The utility model discloses still provide a locker.

According to the utility model discloses elevating gear of first aspect embodiment, include:

a carrying container;

the linear transmission mechanism is provided with a transmission component and a rotating shaft for driving the transmission component to move, and the rotating shaft drives the carrying container to move through the transmission component;

hovering mechanism, including locking wheel, jack catch and adjusting part, the locking wheel is fixed in the axis of rotation, the locking wheel is provided with one-way tooth, the jack catch connect in adjusting part, adjusting part is suitable for the drive the jack catch switches between detent position and unblock position detent position, the jack catch with one-way tooth joint is in order to stop the locking wheel unblock position, the jack catch with one-way tooth separation.

According to the utility model discloses elevating gear, including carrying thing container, sharp drive mechanism and the mechanism of hovering, the mechanism of hovering includes locking wheel, jack catch and adjusting part, and the axis of rotation in sharp drive mechanism is connected to the locking wheel, and the jack catch can switch between detent position and unblock position. In the stopping position, the claw and the one-way teeth of the stopping wheel are mutually limited to prevent the stopping wheel from continuously rotating, namely prevent the rotating shaft from rotating to stop providing rising power for the carrying container, so that the carrying container can hover at the current position, and the carrying container can keep hovering whether being electrified or not; in the unlocking position, the jaw and the stopping wheel are unlocked for limiting, and the stopping wheel can rotate under the action of driving force, so that the carrying container can be continuously lifted and adjusted.

According to the utility model discloses an embodiment, the jack catch is provided with rotates the installation position, adjusting part is used for the drive the jack catch is followed the axis of rotation of rotating the installation position rotates, so that the jack catch is in detent position with switch between the unblock position.

According to the utility model discloses an embodiment, the adjusting part includes driving piece and moving member, the driving piece is used for the drive the moving member removes, the moving member is connected the jack catch is connected to through the moving member drives the jack catch is followed the axis of rotation of rotating the installation position rotates.

According to an embodiment of the present invention, the claw is provided with a pushed portion and a pulled portion, the moving member is inserted into the pulled portion and is limited between the pushed portion and the pulled portion, and the moving member contacts the pushed portion to move to drive the claw to switch from a stopping position to an unlocking position; the moving member contacts the tension portion to drive the claw to switch from the unlocking position to the stopping position by the movement of the moving member.

According to the utility model discloses an embodiment, the adjusting part still includes casing and elastic component, the one end butt of elastic component the moving member, the other end butt of elastic component the casing or the driving piece, the elastic component is used for the drive the moving member removes, in order to drive the jack catch is followed detent position switches to the unblock position.

According to an embodiment of the present invention, the moving member is provided with a core portion, and the driving member includes a ferromagnetic portion and an electromagnetic portion disposed around the core portion, through which the electromagnetic portion is turned on and off, so as to drive the moving member to move relative to the ferromagnetic portion.

According to the utility model discloses an embodiment, electromagnetism portion cuts off the power supply, through the drive the rotation axial the direction that carries the thing container to rise rotates, so that the jack catch relieve with the locking relation of one-way tooth, the moving member resets through gravity, and/or, the restoring force that the moving member passes through the elastic component resets. After power failure, the hovering device can maintain hovering and can be released from external operation.

According to the utility model discloses an embodiment, transmission part includes swiveling wheel, flexible cable and loose pulley assembly, the flexible cable is around locating the swiveling wheel with loose pulley assembly the flexible cable and/or loose pulley assembly is last to form the fixed mounting position that is used for the installation to carry the thing container, the swiveling wheel connect in the axis of rotation.

According to the utility model discloses an embodiment, the flexible cable is the annular, loose pulley assembly includes:

the first fixed pulley group comprises a plurality of first fixed pulleys;

the second fixed pulley block is arranged below the first fixed pulley block and is in transmission connection with the first fixed pulley block through the flexible cable; the second fixed pulley group comprises a plurality of second fixed pulleys;

the third fixed pulley block is arranged between the first fixed pulley block and the second fixed pulley block; the third fixed pulley group comprises at least one third fixed pulley arranged between two adjacent second fixed pulleys; the flexible cable wound between two adjacent second fixed pulleys is wound around the corresponding third fixed pulley, so that a plurality of third flexible cable sections are formed between the first fixed pulley block and the second fixed pulley assembly by the flexible cable, and the third flexible cable sections are provided with the fixed mounting positions.

According to the utility model discloses an embodiment, the flexible cable is including being located the first flexible cable section of swiveling wheel one side and being located the second flexible cable section of swiveling wheel opposite side, loose pulley assembly includes the fourth fixed pulley group, first flexible cable section is connected in the one-level slide rail, the second flexible cable section is walked around at least one fixed pulley in the fourth fixed pulley group and connect in the one-level slide rail, first flexible cable section with the second flexible cable section for the direction that the one-level slide rail was carried on the back mutually extends, the fourth fixed pulley group is connected in the installed part, the installed part is provided with the guide rail, the one-level slide rail is suitable for relatively the linear sliding is to the guide rail, one-level sliding connection carry the thing container.

According to the utility model discloses an embodiment, the installed part with sliding connection has middle slide rail between the one-level slide rail, middle slide rail is connected with the running block, the second flexible cable section is walked around the running block in order to connect in the one-level slide rail.

According to the utility model discloses an embodiment, rotation axis connection is in driving motor's output shaft, there is a plurality of rotation axis connection the swiveling wheel.

According to the utility model discloses locker of second aspect embodiment, including the box and as above elevating gear, elevating gear is located in the box.

According to the utility model discloses locker, including elevating gear, elevating gear can realize hovering in the optional position of locker, and the performance of locker is more stable.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a connection state of a linear transmission mechanism and a hovering mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion A of FIG. 1;

fig. 3 is a schematic structural diagram of a hovering mechanism provided by an embodiment of the present invention, in which a pawl is in a stopping position;

fig. 4 is a schematic structural diagram of the hovering mechanism provided by the embodiment of the present invention, in which the pawl is in the unlocking position; the dashed lines in fig. 3 and 4 illustrate the rotational path of the jaws;

fig. 5 is a schematic diagram of an internal structure of an adjusting assembly of a hovering mechanism according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a lifting device according to an embodiment of the present invention, and fig. 6 is different from fig. 1 in that a carrying container is installed on a flexible cable in fig. 6;

fig. 7 is a schematic structural view of another lifting device according to an embodiment of the present invention, in which the cargo container is not shown, and the position of the transmission component corresponds to the position of the cargo container in the extended position;

fig. 8 is a schematic structural view of another lifting device provided in the embodiment of the present invention, in which the carrying container is in an extended position;

fig. 9 is a schematic structural view of another lifting device according to an embodiment of the present invention, in which the carrying container is in a retracted position.

Reference numerals:

100. a linear transmission mechanism; 1. a rotating shaft; 2. a flexible cable; 201. a first wire section; 202. a second wire section; 203. a third wire section; 3. a mounting member; 301. a guide rail; 4. a first-stage slide rail; 5. a middle slide rail; 501. a first guide portion; 502. a second guide portion; 601. a first fixed pulley block; 602. a second fixed pulley block; 603. a third fixed pulley block; 604. a fourth fixed pulley block; 7. a movable pulley block; 8. fixing the installation position; 9. a drive motor;

200. a hovering mechanism; 21. a detent wheel; 211. one-way teeth; 212. a one-way slot; 22. a claw; 221. a tension portion; 222. a pushed part; 223. rotating the mounting position; 23. an adjustment assembly; 231. a drive member; 2311. a ferromagnetic portion; 2312. an electromagnetic section; 232. a moving member; 2321. an iron core portion; 2322. a limiting part; 2323. a substrate; 2324. a support portion; 233. an elastic member; 234. a housing;

300. a housing; 31. a second ventilation opening; 400. a carrying container; 41. a first vent.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, the terms "plurality", and "plural" mean two or more unless otherwise specified.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Embodiments of the first aspect of the present invention, as shown in fig. 1 to 9, provide a lifting device, which includes a carrying container 400, a linear transmission mechanism 100 and a hovering mechanism 200; the linear transmission mechanism 100 is provided with a transmission component and a rotating shaft 1 for driving the transmission component to move, and the rotating shaft 1 drives the loading container 400 to move through the transmission component; the hovering mechanism 200 includes a stopping wheel 21, a claw 22 and an adjusting assembly 23, the stopping wheel 21 is fixed to the rotating shaft 1, the stopping wheel 21 is provided with a one-way tooth 211, the claw 22 is connected to the adjusting assembly 23, the adjusting assembly 23 is adapted to drive the claw 22 to switch between a stopping position where the claw 22 is engaged with the one-way tooth 211 to stop the stopping wheel 21 and an unlocking position where the claw 22 is separated from the one-way tooth 211.

The linear transmission mechanism 100 is used for driving the loading container 400 to move up and down, the linear transmission mechanism 100 converts the rotation power of the rotation shaft 1 into linear motion through a transmission part, and the loading container 400 is driven to move up and down through the transmission part. When the object carrying container 400 is at any height position, the object carrying container 400 needs to be controlled to hover, at this time, the hovering mechanism 200 can be controlled to act, the adjusting component 23 of the hovering mechanism 200 is used for driving the claw 22 to move, and the claw 22 is matched with the stop wheel 21 to prevent the rotating shaft 1 from continuing to rotate, so that the object carrying container 400 is kept at the height position, that is, the hovering of the object carrying container 400 is realized. The carrying container 400 can be suspended at any height, and the user can control the carrying container 400 to suspend according to the requirement. Or, when the power failure occurs to the lifting device, the adjusting assembly 23 is triggered, so that the claw 22 and the stopping wheel 21 are stopped, the carrying container 400 is kept at the current position, the carrying container 400 is prevented from falling instantly under the action of gravity, and the running stability of the lifting device is better.

The stopping wheel 21 is provided with one-way teeth 211, and it can be understood that the stopping wheel 21 (rotating shaft 1) rotates in the forward direction, the claw 22 is clamped and fixed in the one-way teeth 211 to prevent the stopping wheel 21 (rotating shaft 1) from rotating, so as to realize a stopping effect, and at the moment, the claw 22 is in a stopping position; the stopping wheel 21 (rotating shaft 1) rotates reversely, the claw 22 cannot prevent the stopping wheel 21 (rotating shaft 1) from rotating, the claw 22 is in the unlocking position, at this time, the stopping wheel 21 (rotating shaft 1) can continue to rotate, the claw 22 can be positioned in the one-way tooth 211, or the claw 22 is separated from the one-way tooth 211. The stopping wheel 21 (the rotating shaft 1) rotates forward and corresponds to the driving direction of the lifting of the loading container 400, that is, the claw 22 is matched with the stopping wheel 21, so that the loading container 400 can be kept at the current height position, the loading container 400 is prevented from continuously lifting, and the loading container 400 is prevented from falling under the action of gravity; the stopping wheel 21 (the rotating shaft 1) rotates reversely, and the rotating shaft 1 can drive the loading container 400 to descend corresponding to the driving direction of descending the loading container 400, so that the loading container 400 can be lowered to a height position, and the loading container 400 is prevented from influencing the height of the lifting device. The forward direction and the reverse direction are opposite directions, and do not correspond to the clockwise direction and the counterclockwise direction. As shown in fig. 3 and 4, the forward direction is clockwise and the reverse direction is counterclockwise.

The loading container 400 can be lifted or tilted in a vertical direction, thereby solving the problem that the user cannot conveniently take the contents of the loading container 400. The linear transmission mechanism 100 is used for driving the loading container 400 to ascend and descend, so that waist sprain caused by bending of a user can be avoided, or the user can not reach objects in the loading container 400. The lifting device is suitable for various occasions, such as drawing and pulling of a drawer, lifting of a shelf and the like, the drawer and the shelf can be arranged on various devices such as a refrigerator, a storage cabinet, a desk and the like, and the lifting device is particularly suitable for the refrigerator.

The elevating gear of this embodiment, when carrying thing container 400 and rising to arbitrary height, mechanism 200 of hovering can carry out the locking to carrying thing container 400, convenience of customers gets and puts article, and it falls downwards from the eminence to carry thing container 400 when also can avoiding the outage, and the drive structure of axis of rotation 1 need not to have the locking function (be driving motor 9 when drive structure, then need not to adopt the motor that has the locking function), also need not to set the motor brake, helps reduce cost, and simple structure.

Next, the hovering mechanism 200 will be described.

It will be appreciated that, in connection with fig. 1 to 4, the pawl 22 is provided with a rotational mounting position 223, and the adjustment assembly 23 is used for driving the pawl 22 to rotate along the rotational axis of the rotational mounting position 223, so as to switch the pawl 22 between the stop position and the unlocking position. The claw 22 is switched between a stopping position and an unlocking position through rotating movement, the stopping and unlocking of the claw 22 are adjusted simply and conveniently, and the position of the claw 22 is adjusted and controlled accurately.

Under the state that the lifting device is kept electrified, the claw 22 can be driven by a motor to rotate along the rotating axis, and the motor can be powered by a power supply; in case the lifting device is de-energized, the driving force for the movement of the jaws 22 can be provided by purely mechanical means, or the movement of the jaws 22 can be powered by an additional stored power source.

The rotation mounting position 223 may be configured as a rotating shaft or a shaft hole, the rotation mounting position 223 only has a rotational degree of freedom, and the rotation mounting position 223 may be rotatably connected to a fixing component of the lifting device, such as a bracket or a frame of the lifting device to which the rotation mounting position 223 is rotatably connected.

Of course, the pawl 22 can also be switched by moving between a stop position, in which the pawl 22 is caught in the one-way groove 212 between the adjacent one-way teeth 211, and an unlock position, in which the pawl 22 is away from the detent wheel 21 and is moved out of the one-way groove 212. The switching mode of the claw 22 between the stop position and the unlocking position is various and can be selected according to the requirement.

It can be understood that, as shown in fig. 1 to 4, the adjusting assembly 23 includes a driving member 231 and a moving member 232, the driving member 231 is used for driving the moving member 232 to move, and the moving member 232 is connected to the claw 22 so as to drive the claw 22 to rotate along the rotation axis of the rotation mounting position 223 through the moving member 232. The driving member 231 drives the moving member 232 to move, and the claw 22 is driven to rotate around the rotation axis of the rotation mounting position 223 by the movement of the moving member 232.

The mobile element 232 is shifted by moving between a first position, in which the jaws 22 are kept in the stop position, and a second position, in which the jaws 22 are kept in the unlocking position.

The driving member 231 is a structure capable of providing power for linear motion, for example, the driving member 231 may be a linear motor, or the driving member 231 may also be a purely mechanical structure capable of providing power for linear motion. When the driving member 231 is an electrically driven structure (e.g., a motor), the driving member 231 can provide a driving force for suspending the cargo container 400 under a normal power-on condition; when the driving member 231 is of a pure mechanical structure, the driving member 231 can provide a hovering driving force for the loading container 400 without being electrified, and the loading container 400 can be suspended under the power-on and power-off conditions.

It can be understood that, referring to fig. 3 and 4, the jaw 22 is provided with a pushed part 222 and a pulled part 221, the moving member 232 penetrates through the pulled part 221 and is limited between the pushed part 222 and the pulled part 221, the moving member 232 contacts the pulled part 221 to move to the first position through the moving member 232 to drive the jaw 22 to switch from the stopping position to the unlocking position, that is, the jaw 22 moves out from between the adjacent one-way teeth 211, the stopping of the stopping wheel 21 (rotating shaft 1) by the jaw 22 is released, and the lifting device can perform lifting adjustment; the moving member 232 contacts the pushed portion 222 to move to the second position through the moving member 232 to drive the claw 22 to switch from the unlocking position to the stopping position, so as to suspend the carrying container 400.

As shown in fig. 3 to 4, the moving member 232 contacts the tension portion 221, so that the moving member 232 can apply a moving force to the tension portion 221, the tension portion 221 receives a pulling force to drive the claw 22 to rotate around the rotation axis of the rotation mounting position 223 (the claw 22 rotates around the clockwise direction), so that the clamping end of the claw 22 moves out of the one-way slot 212, and the stopping effect is released; as shown in fig. 4 to fig. 3, when the moving member 232 contacts the pushed part 222, the moving member 232 can apply a moving force to the pushed part 222, and the pushed part 222 receives a pushing force to drive the claw 22 to rotate around the rotation axis of the rotation mounting position 223 (the claw 22 rotates around the counterclockwise direction), so that the claw 22 enters the one-way groove 212 and is engaged with the one-way tooth 211 for stopping.

As shown in fig. 3 and 4, the moving member 232 moves in a small distance between the first position and the second position, and the claw 22 can be switched between the stopping position and the unlocking position by moving within a small size range, so that the driving force required by the moving member 232 is small, the driving force for suspending the object carrying container 400 is reduced, and energy consumption is saved.

As shown in fig. 3 and 4, the moving member 232 includes a base 2323 and a limiting portion 2322 limited between the tension portion 221 and the pushed portion 222, an end of the base 2323 penetrates through the tension portion 221 and is connected with the limiting portion 2322, and the base 2323 and the limiting portion 2322 can be connected by a threaded connection, a snap connection, an adhesion connection, and the like. The limiting part 2322 may be sheet-shaped, column-shaped, etc., the shape of the limiting part 2322 is not limited, so that the moving member 232 is prevented from slipping off from the tension part 221, and the limiting part 2322 has various structures and can be selected as required. The tension part 221 may be provided with a long hole having an opening, the moving member 232 may enter the tension part 221 through the opening, and the base 2323 and the limiting part 2322 may be an integrated structure, so as to facilitate the detachment of the moving member 232 and the claw 22.

It can be understood that, as shown in fig. 3 and 4, the adjusting assembly 23 further includes a housing 234 and an elastic member 233, one end of the elastic member 233 abuts against the moving member 232, the other end of the elastic member 233 abuts against the housing 234 or the driving member 231, the elastic member 233 is used for driving the moving member 232 to move so as to drive the claw 22 to switch from the stopping position to the unlocking position, and the elastic member 233 drives the moving member 232 to move through the elastic member 233, so that the elastic member 233 does not consume energy, which helps to save energy consumption.

In the process that the moving member 232 drives the claw 22 to switch from the unlocking position to the stopping position (in the process that the moving member 232 switches from the first position to the second position), the elastic member 233 generates elastic deformation by overcoming the deformation acting force of the elastic member 233, and in the stopping position, the elastic member 233 is in an elastic deformation state, that is, the elastic member 233 is compressed or stretched between the housing 234 and the moving member 232. As shown in fig. 4 to 3, the latch 22 is switched from the unlock position to the lock position, and the elastic member 233 is compressed and deformed.

It should be noted that when the latch 22 is in the unlocking position, the elastic member 233 is in a balanced state or an elastically deformed state, and in this case, the state of the elastic member 233 is not limited. When the latch 22 is in the stopping position, the elastic member 233 is in the first deformation state, the latch 22 is in the unlocking position, and the elastic member 233 may be in the second deformation state, but the deformation amount of the second deformation state is smaller than that of the first deformation state.

The elastic member 233 may be a spring, an elastic airbag, a spring plate, etc., and the moving distance of the moving member 232 is small, and the requirement for the amount of elastic deformation of the elastic member 233 is also small.

As shown in fig. 3 to 5, the moving element 232 is provided with a supporting portion 2324, one end of the elastic element 233 is limited on the supporting portion 2324, and the other end of the elastic element 233 is limited on the casing 234, when the moving element 232 switches between a first position and a second position relative to the casing 234, the elastic element 233 generates elastic deformation, in the first position, the elastic element 233 is in a balanced state or a second deformation state, and in the second position, the elastic element 233 is in a first deformation (compression) state. The support 2324 may have a disk shape, and stably supports the elastic member 233 in the circumferential direction, thereby ensuring stability of the elastic member 233. Of course, the support 2324 may also be elongated or have another shape, and the shape of the support 2324 is not limited. It should be noted that the other end of the elastic member 233 can be limited by the driving member 231, and the installation manner of the elastic member 233 can be selected as needed, so that the elastic member 233 can be elastically deformed along with the moving member 232.

Of course, in the case of normal energization of the adjustment assembly 23, the switching of the jaws 22 from the stop position to the unlocking position can provide a reverse action to the mobile element 232 through the driving element 231.

It can be understood that, referring to fig. 5, the moving member 232 is provided with an iron core 2321, the driving member 231 includes a ferromagnetic portion 2311 and an electromagnetic portion 2312 wound around the iron core 2321, and the electromagnetic portion 2312 is powered on and powered off to drive the moving member 232 to move relative to the ferromagnetic portion 2311, so as to drive the claw 22 to switch between the stopping position and the unlocking position through the moving member 232.

The electromagnetic portion 2312 may be an electromagnetic coil, during the normal operation of the lifting device, the electromagnetic portion 2312 is kept energized, at this time, the ferromagnetic portion 2311 and the iron core portion 2321 are kept in a repulsive or attractive state, when the electromagnetic portion 2312 is de-energized, an acting force between the iron core portion 2321 and the ferromagnetic portion 2311 disappears, the acting force between the ferromagnetic portion 2311 and the iron core portion 2321 changes, the iron core portion 2321 moves relative to the ferromagnetic portion 2311, the iron core portion 2321 moves, that is, the moving member 232 moves, and the moving member 232 moves to drive the claw 22 to perform position adjustment, so that the claw 22 is switched between the stopping position and the unlocking position.

As shown in fig. 5, the ferromagnetic portion 2311 is located above the electromagnetic portion 2312, that is, the ferromagnetic portion 2311 is located above the iron core portion 2321, when the electromagnetic portion 2312 is energized, an acting force between the ferromagnetic portion 2311 and the iron core portion 2321 is a repulsive force, when the electromagnetic portion 2312 is de-energized, the repulsive force between the ferromagnetic portion 2311 and the iron core portion 2321 disappears, so that the iron core portion 2321 can rise (that is, the moving member 232 rises), the moving member 232 rises to drive the claw 22 to switch from the unlocking position to the stopping position, and by means of electromagnetic control, in the case of de-energizing, the object carrying container 400 can be timely and accurately controlled to hover, the object carrying container 400 is kept in the hovering state, and no electric energy is consumed, the hovering mechanism 200 only needs to provide an acting force for keeping the claw 22 at the unlocking position, the claw 22 has a light mass, and the energy consumed by the claw 22 is small, so that the energy consumption of the hovering mechanism 200 is low, and energy saving is facilitated.

Of course, the ferromagnetic portion 2311 may be located below the electromagnet portion 2312 (not shown in the drawings), that is, the ferromagnetic portion 2311 is located below the iron core portion 2321, when the electromagnet portion 2312 is energized, an acting force between the ferromagnetic portion 2311 and the iron core portion 2321 is an attraction force, and when the electromagnet portion 2312 is de-energized, the attraction force between the ferromagnetic portion 2311 and the iron core portion 2321 is lost, so that the iron core portion 2321 may be raised (that is, the moving member 232 is raised).

The ferromagnetic portion 2311 may be a permanent magnet, the base 2323 of the moving member 232 is connected to the iron core 2321, and the base 2323 and the limiting portion 2322 of the moving member 232 may be non-magnetic induction structures, so as to avoid interfering with magnetic field force between the iron core 2321 and the ferromagnetic portion 2311.

It can be understood that, in the case that the electromagnetic portion 2312 is powered off, the claw 22 is released from the locking relation with the one-way tooth 211 by driving the rotating shaft 1 to rotate in the direction of ascending the loading container 400, the moving member 232 returns to the first position by gravity, so that the claw 22 is switched to the unlocking position, and after the claw 22 is unlocked from the stopping wheel 21, the loading container 400 can be dropped and reset. By using the gravity of the moving member 232, no additional part is needed to provide driving force, the number of parts of the adjusting assembly 23 is reduced, and the structure of the adjusting assembly 23 can be simplified.

The rotation shaft 1 is driven to rotate in the ascending direction of the loading container 400, and the user may manually push the loading container 400 to ascend or the user may manually drive the rotation shaft 1. The user promotes manually and carries thing container 400 and rises, carries thing container 400 and rises and then drives axis of rotation 1 and rotate, and axis of rotation 1 drives stopping wheel 21 and rotates in the direction of stopping dorsad, and like this, jack catch 22 and one-way tooth 211 can relieve the spacing relation of stopping, and at this moment, moving member 232 can reply the primary importance under the exogenic action for jack catch 22 switches to the unblock position. The operation of releasing the locking relation between the claw 22 and the locking wheel 21 is simple and convenient, and the object carrying container 400 can be returned to the low position without electrifying under the condition of power failure, so that the problem that the normal operation of the equipment is influenced because the object carrying container 400 is always kept at the high position is avoided. For example, when the lifting device is located in the storage cabinet, the loading container 400 is a drawer, and the drawer can be returned to a low position by pushing the drawer upwards, so that the drawer is prevented from interfering with the opening and closing of the storage cabinet.

Different from the above-mentioned reset mode of the loading container 400, when the electromagnetic portion 2312 is powered off, the pawl 22 is released from the locking relation with the one-way tooth 211 by driving the rotation shaft 1 to rotate in the direction of raising the loading container 400, and when the adjusting assembly 23 includes the elastic member 233, the moving member 232 is reset by the restoring force of the elastic member 233, so that the pawl 22 is switched to the unlocking position, and the loading container 400 is reset to the low position.

The structure and position of the elastic member 233 can refer to the description of the elastic member 233 in the above embodiment.

It should be noted that the moving element 232, the driving element 231 and the elastic element 233 are independent components and perform respective independent functions, and at least one of the moving element 232, the driving element 231 and the elastic element 233 may be a single component or a plurality of components.

The hovering mechanism 200 can be used for hovering a lifting device with a rotating shaft 1, can control the loading container 400 to hover at any height, can realize reliable stopping, can realize power-off hovering through the driving piece 231 based on an electromagnetic principle, has a one-way stopping characteristic based on the stopping wheel 21, can remove stopping by reversely driving the rotating shaft 1 in the stopping direction of the one-way teeth 211, realizes resetting of the loading container 400, can manually reset in the power-off condition in the resetting operation, and is suitable for lifting control of a freezing drawer in a refrigerator. When carrying thing container 400 and rising to the peak, rely on mechanism 200 of hovering to realize hovering, when carrying thing container 400 needs to descend, the manual work of holding up carries thing container 400 upward movement, can accomplish the unblock, and the back of unblock drives movable part 232 through elastic component 233 and resumes to drive jack catch 22 through movable part 232 and resume the unlocking position, energy saving and consumption reduction. In the downward movement process of the object carrying container 400, the rotating shaft 1 is reset, the action can be completed by using a common motor, and a high-cost special motor with a locking function (such as a stepping motor with an electromagnetic lock) is not required, so that the cost can be reduced.

Next, the structure of the transmission member of the linear transmission mechanism 100 will be described.

It will be appreciated that, referring to fig. 1, 6 to 9, the transmission member includes a rotation wheel, a wire 2 and a pulley assembly, the wire 2 is wound around the rotation wheel and the pulley assembly, a fixed mounting position 8 for mounting the loading container 400 is formed on the wire 2 and/or the pulley assembly, and the rotation wheel is connected to the rotation shaft 1. The transmission part not only can realize the hoisting of carrying thing container 400 with the help of flexible cable 2 and loose pulley assembly, but also can utilize the flexibility of flexible cable 2 self to absorb the vibration that driving piece 231 produced, reduces the vibration to carrying the interference of thing container 400, and then realizes carrying the steady lift of thing container 400.

Forming a fixed mounting location 8 for mounting the cargo container 400 on the wire 2 and/or the pulley assembly provides three ways: as shown in fig. 1 and fig. 6, the flexible cable 2 is provided with a fixed installation position 8, and the movement of the flexible cable 2 drives the loading container 400 to ascend and descend; as shown in fig. 7 to 9, the flexible cable 2 is fixed to the primary sliding rail 4, the primary sliding rail 4 is fixedly provided with a carrying container 400, it can be understood that the flexible cable 2 is provided with a fixed mounting position 8, the primary sliding rail 4 is slidably connected to the middle sliding rail 5, the middle sliding rail 5 is provided with a movable pulley block 7, the middle sliding rail 5 is driven to move by the movement of the movable pulley block 7, it can be understood that the flexible cable 2 and the pulley assembly are cooperatively provided with the fixed mounting position 8; or the pulley assembly comprises a movable pulley, the object carrying container 400 is rotatably connected with the movable pulley, and the movable pulley is pulled to lift through the flexible cable 2, so that the object carrying container 400 is lifted.

Wherein the rotator wheel may be driven by a driving motor 9 or a turning handle, as in the embodiment shown in fig. 1 and 7, the rotator wheel is driven by the driving motor 9. The driving parts may be provided on at least one side of the carrying container 400, as shown in fig. 1 and 7, and the driving parts are respectively provided on opposite sides of the carrying container 400 and connected to the rotating shaft 1, and in some cases, the driving parts having the same structure are symmetrically provided on opposite sides of the carrying container 400. As shown in fig. 1 to 7, the rotating shaft 1 is a synchronizing shaft connecting two transmission members, and can simultaneously stop the transmission members on both sides, the transmission members on both sides may have the same or different structures, and the transmission member on each side is provided with at least one fixed mounting position 8, so that the structure of the lifting device can be simplified, and the stable lifting of the loading container 400 can be ensured. As shown in fig. 1 and 6, the arrangement of the pulleys of the pulley assemblies of the transmission members on both sides of the carrying container 400 is different, the transmission member on one side is provided with two fixed mounting positions 8, and the transmission member on the other side is provided with one fixed mounting position 8.

It can be understood that the rotating shaft 1 is connected to the output shaft of the driving motor 9, and the rotating shaft 1 is connected to a plurality of rotating wheels, that is, the rotating shaft 1 can be connected to a plurality of transmission components to drive the loading container 400 to lift and adjust through the plurality of transmission components, so as to ensure the stable lifting of the loading container 400.

As shown in fig. 1 and 6, the pulley assembly includes a plurality of fixed pulley sets, the flexible cable 2 is in an annular shape, the flexible cable 2 bypasses the rotating wheel, the rotating wheel is driven to rotate by the driving motor 9, the flexible cable 2 forms a plurality of third flexible cable sections 203 with the same transmission direction and in parallel between the plurality of fixed pulley sets, and the fixed mounting position 8 is arranged on the third flexible cable sections 203, so as to realize the lifting adjustment of the carrying container 400. The sheave assembly includes: a first fixed pulley group 601, a second fixed pulley group 602 and a third fixed pulley group 603, wherein the first fixed pulley group 601 comprises a plurality of first fixed pulleys (the rotating wheel can be understood as one first fixed pulley); the second fixed pulley block 602 is arranged below the first fixed pulley block 601 and is in transmission connection with the first fixed pulley block 601 through a flexible cable 2; the second fixed pulley group 602 includes a plurality of second fixed pulleys; the third fixed pulley group 603 is arranged between the first fixed pulley group 601 and the second fixed pulley group 602; the third fixed pulley group 603 comprises at least one third fixed pulley arranged between two adjacent second fixed pulleys; the flexible cables 2 wound between two adjacent second fixed pulleys are wound around the corresponding third fixed pulleys, so that the flexible cables 2 form a plurality of third flexible cable sections 203 between the first fixed pulley block 601 and the second fixed pulley block 602, and the third flexible cable sections 203 are provided with fixed mounting positions 8.

Taking the transmission component including the flexible cable 2 with two fixed mounting positions 8 as an example, two third flexible cable sections 203 extend in the vertical direction, after the side wall of the loading container 400 is fixed on the two third flexible cable sections 203, the driving motor 9 drives the rotating wheel to rotate, so that when the driving flexible cable 2 rotates clockwise, the two third flexible cable sections 203 both move upwards, and then the loading container 400 is driven to move upwards vertically. When the flexible cable 2 moves in the counterclockwise direction, the two third flexible cable sections 203 move downward, and then the carrier container 400 is driven to move downward vertically.

In addition, the whole lifting device is installed through the pulley assemblies, the assembling area required by the pulley assemblies is small, and the application range of the lifting device can be expanded.

The lifting device shown in fig. 7 to 9 is different from the above-described structure of the transmission member. The flexible cable 2 comprises a first flexible cable section 201 located on one side of the rotating wheel and a second flexible cable section 202 located on the other side of the rotating wheel, the pulley assembly comprises a fourth fixed pulley block 604, the first flexible cable section 201 is connected to the first-level sliding rail 4, the second flexible cable section 202 winds around at least one fixed pulley in the fourth fixed pulley block 604 and is connected to the first-level sliding rail 4, the first flexible cable section 201 and the second flexible cable section 202 extend in the direction opposite to the first-level sliding rail 4, the fourth fixed pulley block 604 is connected to the mounting part 3, the mounting part 3 is provided with a guide rail 301, the first-level sliding rail 4 is suitable for linear sliding relative to the guide rail 301, and the first-level sliding rail 4 is connected with the carrying container 400.

The driving motor 9 can drive the rotation wheel to rotate, and the rotation wheel drives the first wire section 201 and the second wire section 202 of the wire 2 to move, and the driving motor 9 can be a component independent from the transmission component or a part of the transmission component. On the basis, the first wire section 201 is connected to the primary slide rail 4 through a connecting piece, the second wire section 202 is wound around at least one fixed pulley in the fourth fixed pulley group 604 and connected to the primary slide rail 4, and the first wire section 201 and the second wire section 202 form an annular path around the primary slide rail 4, the fourth fixed pulley group 604 and the rotating wheel. When the primary sliding rail 4 needs to move, the driving motor 9 drives the rotating wheel to rotate, the rotating wheel rotates to enable one of the first flexible cable section 201 and the second flexible cable section 202 to continue to be wound to the rotating wheel, the other one of the first flexible cable section 201 and the second flexible cable section 202 is separated from the rotating wheel (gradually separated from the rotating wheel to be completely separated or partially separated), and then the flexible cable 2 can drive the primary sliding rail 4 to do linear motion along the guiding direction of the mounting part 3. Along with the different rotation directions of the rotating wheel, the primary slide rail 4 makes different directions of linear motion along the guiding direction of the mounting part 3. When the rotating wheel rotates forward, the flexible cable 2 drives the primary slide rail 4 to slide towards the direction extending out of the mounting part 3, in the process, the first flexible cable section 201 (part or all) gradually separates from the rotating wheel, and the second flexible cable section 202 gradually winds towards the rotating wheel. When the rotating wheel rotates reversely, the flexible cable 2 drives the first-stage sliding rail 4 to slide in the direction returning to the mounting part 3, in the process, the first flexible cable section 201 is gradually wound towards the rotating wheel, and the second flexible cable section 202 (partially or completely) is gradually separated from the rotating wheel. Wherein, the forward direction and the reverse direction are relative concepts, and the extending direction of the first-level slide rail 4 can be ensured to meet the requirement.

The fourth fixed pulley group 604 is configured to adjust a direction of at least one of the first flexible cable segment 201 and the second flexible cable segment 202, so that the first flexible cable segment 201 and the second flexible cable segment 202 extend in a direction opposite to the primary slide rail 4, and it can be understood that a distance is left between the fixed pulleys of the fourth fixed pulley group 604 and the rotating wheel. A distance is left between the fixed pulley wound by the second cable section 202 and the position where the second cable section 202 is connected to the primary slide rail 4 so as to adjust the direction of the second cable section 202, and/or a distance is left between the fixed pulley wound by the first cable section 201 and the position where the first cable section 201 is connected to the primary slide rail 4 so as to adjust the direction of the first cable section 201 and ensure that the first cable section 201 and the second cable section 202 extend in opposite directions.

The first wire section 201 and the second wire section 202 may be two independent wires or one integrated wire, and the structural form of the wire 2 may be selected according to the needs, and is not limited herein. One of the first wire segment 201 and the second wire segment 202 extends from the upper side of the rotating wheel and the other extends from the lower side of the rotating wheel, where up and down is understood to be opposite sides of the rotational axis of the rotating wheel.

In order to realize the linear motion, the rotating wheel and the fourth fixed pulley group 604 (the fourth fixed pulley group 604 comprises at least one fixed pulley, and the number of the fixed pulleys is related to the position of the rotating wheel, the extending path of the first cable segment 201 and the extending path of the second cable segment 202) are matched, so that the occupied space is small, the structure is simple, and the cost of the linear transmission mechanism 100 is not high. Meanwhile, the rotating wheel and the fourth fixed pulley block 604 are convenient to disassemble and assemble.

It can be understood that the intermediate slide rail 5 is slidably connected between the mounting member 3 and the primary slide rail 4, the movable pulley block 7 is connected to the intermediate slide rail 5, and the second flexible cable section 202 passes around the movable pulley block 7 to be connected to the primary slide rail 4, so as to increase the transmission stroke of the linear transmission mechanism 100, or reduce the length of the linear transmission mechanism 100 in the telescopic direction, which helps to reduce the volume and occupied space of the linear transmission mechanism 100. The middle slide rail 5 needs to be provided with the movable pulley block 7, the second flexible cable section 202 is connected to the first-stage slide rail 4 by bypassing the movable pulley block 7, the structure is simple, and the running stability of the middle slide rail 5 is better.

One or more middle slide rails 5 can be arranged, and when one middle slide rail 5 is arranged, the linear transmission mechanism 100 performs two-stage transmission; when the plurality of intermediate slide rails 5 are provided, the linear transmission mechanism 100 performs three-stage or more transmission, one intermediate slide rail 5 is slidably connected to the mounting member 3, one intermediate slide rail 5 is slidably connected to the one-stage slide rail 4, and the adjacent intermediate slide rails 5 are slidably connected. As shown in fig. 7 and 8, a solution is provided in which an intermediate slide rail 5 is provided.

The middle slide rail 5 is provided with a first guide part 501 and a second guide part 502, the guide rail 301 of the mounting part 3 is covered and buckled on one side of the first guide part 501, the first guide part 501 and the guide rail 301 are mutually matched in a guiding way, the first-level slide rail 4 is covered and buckled on one side of the second guide part 502, and the first-level slide rail 4 and the second guide part 502 are matched in a guiding way. The first guide portion 501 and the second guide portion 502 are located on the same side of the middle slide rail 5, and the mounting member 3 and the first-stage slide rail 4 are located on the same side of the middle slide rail 5, so that the overall thickness of the linear transmission mechanism 100 can be reduced. First guide part 501 is detained to the guide rail 301 cover of installed part 3, and guide rail 301 can play the effect of first guide part 501 of protection, and second guide part 502 is detained to one-level slide rail 4 cover, and one-level slide rail 4 can play the effect of protection second guide part 502, and middle slide rail 5 then receives the protection like this.

As shown in fig. 8 and 9, the intermediate slide rail 5 is connected to the housing 300, and when the primary slide rail 4 is in the extended state with respect to the intermediate slide rail 5, the housing 300 surrounds the space between the carrier container 400 and the frame structure, and when the primary slide rail 4 is in the folded state with respect to the intermediate slide rail 5, the housing 300 surrounds the outside of the carrier container 400.

The object carrying container 400 is provided with a first ventilation opening 41, the housing 300 is provided with a second ventilation opening 31, and the first ventilation opening 41 and the second ventilation opening 31 are in one-to-one correspondence and are communicated when the primary slide rail 4 and the intermediate slide rail 5 are in a folded state. When the loading container 400 needs ventilation, such as ventilation heating or ventilation cooling, the space in the loading container 400 can be communicated with the external space through the first ventilation opening 41 and the second ventilation opening 31, the structure is simple, and the ventilation of the loading container 400 is facilitated.

The above embodiment provides the linear actuator 100 in which the flexible cable 2 is engaged with the pulley assembly, but the structure of the linear actuator 100 is various, and the linear actuator may be not limited to the above structure, and other mechanisms for converting the rotational driving force into the linear motion may be used.

The embodiment of the second aspect of the present invention is shown in fig. 1 to 9, and provides a storage cabinet, including the box and the lifting device in at least one of the above embodiments, the lifting device is located in the box, and the lifting device has the above beneficial effects, and then the storage cabinet has the above beneficial effects, and the above contents can be referred to specifically, and the description is omitted here.

The carrier container 400 is at least one of a shelf connected to the housing through the linear actuator 100 in the above-described embodiment, a bottle frame connected to the housing through the linear actuator 100 in the above-described embodiment, and a drawer connected to the housing through the linear actuator 100 in the above-described embodiment. The loading container 400 is connected to the body or door of the box body, and can be selected according to the requirement. The lifting device can be installed in the box body, and the loading container 400 is simple in installation structure and flexible in installation mode.

The above embodiments are merely illustrative, and not restrictive, of the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of the technical solutions should be covered by the scope of the claims of the present invention.

Claims (13)

1. A lifting device, comprising:

a carrying container;

the linear transmission mechanism is provided with a transmission component and a rotating shaft for driving the transmission component to move, and the rotating shaft drives the carrying container to move through the transmission component;

hovering mechanism, including locking wheel, jack catch and adjusting part, the locking wheel is fixed in the axis of rotation, the locking wheel is provided with one-way tooth, the jack catch connect in adjusting part, adjusting part is suitable for the drive the jack catch switches between detent position and unblock position detent position, the jack catch with one-way tooth joint is in order to stop the locking wheel unblock position, the jack catch with one-way tooth separation.

2. The lifting device as claimed in claim 1, wherein the pawl is provided with a rotational mounting location, and the adjustment assembly is configured to drive the pawl to rotate along a rotational axis of the rotational mounting location to switch the pawl between the detent position and the unlocked position.

3. The lifting device as claimed in claim 2, wherein the adjusting assembly comprises a driving member and a moving member, the driving member is used for driving the moving member to move, and the moving member is connected to the claw so as to drive the claw to rotate along the rotation axis of the rotation mounting position through the moving member.

4. The lifting device as claimed in claim 3, wherein the claw is provided with a pushed part and a pulled part, the moving member is inserted into the pulled part and is limited between the pushed part and the pulled part, and the moving member contacts the pushed part to drive the claw to switch from a stopping position to the unlocking position by the movement of the moving member; the moving member contacts the tension portion to drive the claw to switch from the unlocking position to the stopping position by the movement of the moving member.

5. The lifting device as claimed in claim 3, wherein the adjusting assembly further comprises a housing and an elastic member, one end of the elastic member abuts against the moving member, the other end of the elastic member abuts against the housing or the driving member, and the elastic member is used for driving the moving member to move so as to drive the claw to switch from the stopping position to the unlocking position.

6. The lifting device as claimed in claim 3, wherein the moving member is provided with a core portion, and the driving member includes a ferromagnetic portion and an electromagnetic portion wound around the core portion, and the electromagnetic portion is turned on and off to drive the moving member to move relative to the ferromagnetic portion.

7. The lifting device as claimed in claim 6, wherein the electromagnetic part is de-energized, and the pawl is released from the locking relation with the one-way tooth by driving the rotary shaft to rotate in a direction in which the loading container is lifted, and the moving member is restored by gravity, and/or the moving member is restored by a restoring force of an elastic member.

8. The lifting device according to any one of claims 1 to 7, wherein the transmission member comprises a rotation wheel, a flexible cable and a pulley assembly, the flexible cable is wound around the rotation wheel and the pulley assembly, a fixed mounting position for mounting a cargo container is formed on the flexible cable and/or the pulley assembly, and the rotation wheel is connected to the rotation shaft.

9. The lift device of claim 8, wherein the wire is looped, the pulley assembly comprising:

the first fixed pulley group comprises a plurality of first fixed pulleys;

the second fixed pulley block is arranged below the first fixed pulley block and is in transmission connection with the first fixed pulley block through the flexible cable; the second fixed pulley group comprises a plurality of second fixed pulleys;

the third fixed pulley block is arranged between the first fixed pulley block and the second fixed pulley block; the third fixed pulley group comprises at least one third fixed pulley arranged between two adjacent second fixed pulleys; the flexible cable wound between two adjacent second fixed pulleys is wound around the corresponding third fixed pulley, so that a plurality of third flexible cable sections are formed between the first fixed pulley block and the second fixed pulley assembly by the flexible cable, and the third flexible cable sections are provided with the fixed mounting positions.

10. The lifting device as recited in claim 8, wherein the cable includes a first cable segment on one side of the rotatable wheel and a second cable segment on the other side of the rotatable wheel, the pulley assembly includes a fourth set of fixed pulleys, the first cable segment is connected to a primary track, the second cable segment passes around at least one fixed pulley of the fourth set of fixed pulleys and is connected to the primary track, the first and second cable segments extend in opposite directions relative to the primary track, the fourth set of fixed pulleys is connected to a mounting member, the mounting member is provided with a guide rail, the primary track is adapted to slide linearly relative to the guide rail, and the primary track is connected to the carrier container.

11. The lifting device as claimed in claim 10, wherein an intermediate slide rail is slidably connected between the mounting member and the primary slide rail, a movable pulley block is connected to the intermediate slide rail, and the second wire segment passes around the movable pulley block to be connected to the primary slide rail.

12. The lifting device as claimed in claim 8, wherein the rotating shaft is connected to an output shaft of a driving motor, and the rotating shaft is connected to a plurality of the rotating wheels.

13. A cabinet comprising a cabinet and a lifting device as claimed in any one of claims 1 to 12, the lifting device being located within the cabinet.

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