CN115196555A - Lifting mechanism and stacker - Google Patents

Abstract

The embodiment of the invention relates to the technical field of warehouse logistics and discloses a lifting mechanism and a stacker. The upright column is arranged on the side surface of the lifting platform; the fixed clamp assembly is fixedly connected to the lifting platform and arranged on the first side surface of the upright post; the movable clamp assembly is connected to the lifting platform and arranged on the second side surface of the upright post; the driving assembly is used for driving the movable clamp assembly to be in friction contact with the second side surface when the lifting platform falls down, and the movable clamp assembly is enabled to be abutted against the lifting platform to be twisted until the fixed clamp assembly is in friction contact with the first side surface. Under the combined action of the fixed clamp assembly and the movable clamp assembly, the anti-falling effect can be achieved, the friction force between the fixed clamp/movable clamp assembly and the stand column can be obviously increased, the time from falling to stopping of the lifting platform is effectively shortened, the lifting platform is stopped in time, and the safety is ensured.

Description

Lifting mechanism and stacker

Technical Field

The embodiment of the invention relates to the technical field of storage logistics transportation, in particular to a lifting mechanism and a stacker.

Background

The stacker is a special crane which takes a fork or a string rod as a fetching device and grabs, carries and stacks the goods in a warehouse, a workshop and the like or takes and places unit goods from a high-rise goods shelf. When the lifting platform of the stacker lifts, the lifting platform drops rapidly due to the breakage of the lifting rope and/or the stalling of the motor.

In the related art, a fall prevention structure is generally provided for preventing the falling of the lift table in time. Generally, common fall protection structures include mechanical hard limit type, buffer type, electric control type, friction type, and the like. The mechanical hard limit is that the movement mechanism is clamped by the mechanical structure after being lifted, so that the movement mechanism cannot fall. The cushion type is to cushion the collision by using a cushion, a spring, or the like. The electric control mode adopts motor braking, a hydraulic valve, a pneumatic valve and the like for limitation. The friction type reduces the dropping speed by using friction until stopping.

At present, the anti-falling structure of the stacker usually adopts a friction type. However, the friction braking effect of the fall protection structure of the stacker in the related art is not good, and the timely stop of the lifting platform is further influenced.

Disclosure of Invention

The embodiment of the invention provides a lifting mechanism and a stacker, which solve the problem of poor friction braking effect in the related technology under the combined action of a fixed clamp assembly and a movable clamp assembly.

The lifting mechanism comprises a lifting platform, an upright post, a fixed clamp assembly, a movable clamp assembly and a driving assembly, wherein the upright post is arranged on the side surface of the lifting platform; the fixed clamp assembly is fixedly connected to the lifting table and arranged on the first side surface of the upright post; the movable clamp assembly is connected to the lifting table and arranged on the second side face of the upright post; the driving assembly is used for driving the movable clamp assembly to be in frictional contact with the second side face when the lifting platform falls, and enabling the movable clamp assembly to push the lifting platform to twist until the fixed clamp assembly is in frictional contact with the first side face.

According to some embodiments of the invention, the second side is disposed opposite the first side; the lifting mechanism comprises two upright columns which are respectively arranged on two opposite side surfaces of the lifting platform;

the lifting mechanism comprises two groups of fixed clamp assemblies and movable clamp assemblies which are correspondingly arranged, and each group of the fixed clamp assemblies and the movable clamp assemblies are respectively arranged on the first side surface and the second side surface of the upright post;

along the arrangement direction of the two upright posts, the fixed clamp assemblies of one group are arranged corresponding to the movable clamp assemblies of the other group.

According to some embodiments of the invention, the lift table comprises a stop plate; the lifting mechanism further comprises:

the lifting rope is used for driving the lifting platform to lift; the lifting rope penetrates through the through hole of the stop plate, the driving assembly is connected to one end of the lifting rope and can be stopped by the stop plate, and therefore the lifting platform can be hung at one end of the lifting rope through the driving assembly in a normal state.

According to some embodiments of the invention, the drive assembly comprises:

the lifting rope is arranged in the containing groove and the through hole in a penetrating manner, and one end of the lifting rope exposed out of the pressed piece is connected with the pressed piece through a limiting piece; one end of the compression piece is connected to the movable clamp assembly; and

the elastic piece is arranged in the accommodating groove, one end of the elastic piece abuts against the stop plate, and the other end of the elastic piece abuts against the groove bottom of the accommodating groove and is used for exerting the elastic force far away from the stop plate direction on the pressed piece.

According to some embodiments of the invention, the lift mechanism further comprises:

the protection switch is connected to the lifting platform and used for obtaining a movement signal of the driving component; and

and the controller is in signal connection with the protection switch and is used for locking the motor of the lifting mechanism according to the movement signal.

According to some embodiments of the invention, the movable jaw assembly comprises:

the first mounting seat is fixedly connected to the lifting platform;

the first friction block is connected to the first mounting seat in a sliding direction in a sliding mode, and the sliding direction is obliquely arranged relative to the extending direction of the length of the upright column; and

and the linkage unit is connected with the first friction block and the driving assembly and is used for driving the first friction block to move upwards and towards the direction close to the upright post when the driving assembly works until the first friction block is in friction contact with the second side surface.

According to some embodiments of the present invention, the movable jaw assembly further comprises a slider, the first friction block and the slider being slidably connected along the sliding direction by a sliding structure;

the sliding piece is connected to the first mounting seat and used for jointly pressing the first friction block with the upright column when the first friction block is in friction contact with the upright column.

According to some embodiments of the invention, the first friction block has a first sliding surface, the slide has a sliding slot, a slot bottom of the sliding slot forming a second sliding surface;

at least part of the first friction block is slidably arranged in the sliding groove, the first sliding surface and the second sliding surface are parallel to the sliding direction and are in sliding fit, and when the first friction block is in frictional contact with the upright column, the second sliding surface at least presses the first friction block along the direction perpendicular to the upright column.

According to some embodiments of the invention, the sliding structure comprises:

the long hole is arranged on one of the first friction block and the sliding piece and extends along the sliding direction;

the first mounting hole is formed in the other one of the first friction block and the sliding piece;

the second mounting hole is arranged on the other one of the first friction block and the sliding piece and is arranged at an interval with the first mounting hole along the sliding direction;

the first pin shaft is arranged in the strip hole and the first mounting hole in a penetrating mode and can move along the extending direction of the strip hole; and

and the second pin shaft is arranged in the strip hole and the second mounting hole in a penetrating manner and can move along the extending direction of the strip hole.

According to some embodiments of the invention, the first pin abuts against one end of the elongated hole close to the upright in a state where the first friction block is not in frictional contact with the upright.

According to some embodiments of the invention, the slider is movably connected to the first mount;

the movable clamp assembly further comprises a first adjusting unit connected to the first mounting seat for adjusting the position of the sliding member relative to the first mounting seat in a direction away from or close to the upright.

According to some embodiments of the invention, the interlocking unit comprises:

the swinging piece is hinged to the first mounting seat, and one end of the swinging piece is connected to the driving assembly in a floating mode; and

and one end of the jacking piece is connected to the first friction block, and the other end of the jacking piece is abutted against the other end of the swinging piece.

According to some embodiments of the present invention, the lifting mechanism further comprises a reset member connected to the lifting table and the linkage unit for resetting the linkage unit.

According to some embodiments of the invention, the fixed jaw assembly comprises:

the second mounting seat is fixedly connected to the lifting platform;

the second friction block comprises a second body and a second wear-resistant part, the second body is adjustably connected to the second mounting seat along the direction close to or far away from the upright column, and the second wear-resistant part is connected to the second body and used for being in friction contact with the first side surface; and

and the limiting block is connected to the second mounting seat and used for limiting the second wear-resistant piece to generate relative movement relative to the second body when the second wear-resistant piece is in frictional contact with the first side surface.

The stacker of the embodiment of the invention comprises the lifting mechanism.

One embodiment of the above invention has at least the following advantages or benefits:

according to the lifting mechanism provided by the embodiment of the invention, when the lifting platform falls down, the movable clamp assembly can push the lifting platform to twist by taking the vertical direction as an axis, so that the fixed clamp assembly can also be in frictional contact with the first side surface. Like this, under the combined action of fixed pincers subassembly and activity pincers subassembly, not only can play and prevent weighing down the effect, can also show the frictional force that increases between fixed pincers/activity pincers subassembly and the stand, effectively shorten the time of elevating platform from the tenesmus to stopping, make the elevating platform in time stop, ensured the security.

Drawings

Fig. 1 is a schematic perspective view of a lifting platform arranged on one side of a column according to an embodiment of the invention.

Fig. 2 shows a side view of fig. 1.

Fig. 3 shows a top view of fig. 1.

Figure 4 is a perspective view of the stationary jaw assembly and the movable jaw assembly of figure 1 shown mounted to a lift table.

Figure 5 shows a front view of the stationary jaw assembly of figure 1.

Fig. 6 shows a right side view of fig. 5.

Fig. 7 shows a partial enlarged view at X1 in fig. 4.

Figure 8 is a perspective view of the movable jaw assembly and drive assembly of figure 1 shown installed.

Fig. 9 shows a side view of the schematic of fig. 8.

Fig. 10 showsbase:Sub>A cross-sectional view alongbase:Sub>A-base:Sub>A in fig. 9.

Fig. 11 shows a schematic view of the protection switch of fig. 4.

Figure 12 shows a partial cross-sectional view of the partial slider of figure 8 cut away.

Fig. 13 shows a schematic view of a first friction block.

Fig. 14 shows a schematic view of the slider.

Fig. 15 shows a cross-sectional view along B-B in fig. 9.

Wherein the reference numerals are as follows:

10. a lifting platform; 110. a stopper plate; 111. perforating; 20. a column; 210. a first side surface; 220. a second side surface; 30. fixing the clamp assembly; 310. a second mounting seat; 320. a second friction block; 321. a second body; 322. a second wear part; 323. a second waist-shaped hole; 330. a limiting block; 340. a second adjusting unit; 341. a second adjusting lever; 40. a movable jaw assembly; 410. a first mounting seat; 420. a first friction block; 421. a first sliding surface; 422. a first body; 423. a first wear part; 430. a linkage unit; 431. a swinging member; 432. a jacking piece; 433. a notch; 440. a slider; 441. a second sliding surface; 442. a chute; 443. a first waist-shaped hole; 450. a first adjusting unit; 451. a first adjusting lever; 460. a sliding structure; 461. a strip hole; 462. a first mounting hole; 463. a first pin shaft; 464. a second mounting hole; 465. a second pin shaft; 50. a drive assembly; 510. a pressure receiving member; 511. accommodating a tank; 512. a through hole; 513. a variable diameter section; 520. an elastic member; 530. a gasket; 60. a lifting rope; 610. a wire rope; 620. a pressure head; 70. a protection switch; 71. a mounting frame; 80. a limiting member; 90. a reset member.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

As shown in fig. 1 to 4, fig. 1 is a schematic perspective view of an elevating platform 10 provided at one side of an upright post 20 according to an embodiment of the present invention. Fig. 2 shows a side view of fig. 1. Fig. 3 shows a top view of fig. 1. Fig. 4 is a perspective view of the stationary jaw assembly 30 and the movable jaw assembly 40 of fig. 1 mounted to the lift table 10. The lifting mechanism of the embodiment of the present invention includes a lifting platform 10, a column 20, a fixed jaw assembly 30, a movable jaw assembly 40, and a driving assembly 50. The upright column 20 is disposed on a side surface of the lifting platform 10, the fixed jaw assembly 30 is fixedly connected to the lifting platform 10 and disposed on a first side surface 210 of the upright column 20, and the movable jaw assembly 40 is connected to the lifting platform 10 and disposed on a second side surface 220 of the upright column 20. The driving assembly 50 is used for driving the movable vise assembly 40 to make frictional contact with the second side surface 220 when the lifting platform 10 falls down, and making the movable vise assembly 40 generate torsion by using the vertical direction as an axis when the lifting platform 10 is pushed by the movable vise assembly 40 until the fixed vise assembly 30 makes frictional contact with the first side surface 210.

It is to be understood that the terms "comprises" and "comprising," as well as any variations thereof, in the embodiments of the present invention, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or may alternatively include other steps or elements inherent to such process, method, article, or apparatus.

When the lifting platform 10 falls down, the driving assembly 50 can drive the movable clamp assembly 40 to be in frictional contact with the second side surface 220, and the falling speed of the lifting platform 10 can be reduced through the frictional force generated between the movable clamp assembly 40 and the second side surface 220 of the upright post 20. Meanwhile, the movable clamp assembly 40 can push the lifting platform 10 to twist with the vertical direction as an axis until the fixed clamp assembly 30 is in frictional contact with the first side surface 210. Thus, the fixed jaw assembly 30 and the movable jaw assembly 40 generate friction with the first side surface 210 and the second side surface 220 of the upright post 20, respectively, so that the friction between the lifting platform 10 and the upright post 20 is increased, and the dropping speed of the lifting platform 10 can be timely reduced by the larger friction until the lifting platform 10 stops.

Therefore, in the lifting mechanism according to the embodiment of the present invention, when the lifting platform 10 falls down, the movable clamp assembly 40 can push the lifting platform 10 to twist about the vertical direction, so that the fixed clamp assembly 30 can also be in frictional contact with the first side surface 210. Thus, under the combined action of the fixed clamp assembly 30 and the movable clamp assembly 40, the falling prevention effect can be achieved, the time from falling to stopping of the lifting platform 10 can be effectively shortened, and the safety is ensured.

The first side 210 of the column 20 is disposed opposite the second side 220. In other words, the fixed jaw assembly 30 and the movable jaw assembly 40 are disposed on opposite sides of the column 20, respectively. When the fixed jaw assembly 30 contacts the first side surface 210 and the movable jaw assembly 40 contacts the second side surface 220, the first side surface 210 and the second side surface 220 are oppositely arranged, so that the stress of the upright post 20 is more uniform, and the stability of the lifting mechanism is ensured.

Referring to fig. 3, the lifting mechanism includes two vertical posts 20, and the two vertical posts 20 are respectively disposed on two opposite sides of the lifting platform 10. The lifting mechanism comprises two sets of correspondingly arranged fixed jaw assemblies 30 and movable jaw assemblies 40, and each set of fixed jaw assembly 30 and movable jaw assembly 40 is respectively arranged on the first side surface 210 and the second side surface 220 of the upright post 20.

As shown in fig. 3, the fixed jaw assembly 30 of one set is disposed to correspond to the movable jaw assembly 40 of the other set along the arrangement direction of the two uprights 20. Specifically, the movable clamp assembly 40 located at the lower left corner is disposed corresponding to the fixed clamp assembly 30 located at the lower right corner, and the fixed clamp assembly 30 located at the upper left corner is disposed corresponding to the movable clamp assembly 40 located at the upper right corner. Two movable jaw assemblies 40 are arranged diagonally and two fixed jaw assemblies 30 are arranged diagonally.

When the two movable clamp assemblies 40 are in frictional contact with the two upright columns 20, respectively, because the two movable clamp assemblies 40 are arranged along the diagonal, the directions of the reaction forces exerted on the two movable clamp assemblies 40 by the two upright columns 20 are opposite, so that the lifting platform 10 can generate slight torsion along the center thereof, and finally, the two fixed clamp assemblies 30 are in frictional contact with the two upright columns 20, respectively.

As shown in fig. 5 and 6, fig. 5 shows a front view of the stationary jaw assembly 30 of fig. 1. Fig. 6 shows a right side view of fig. 5. The stationary jaw assembly 30 includes a second mounting base 310, a second friction block 320, and a second adjusting unit 340.

The second mounting base 310 is fixedly connected to the lifting platform 10, for example, fixedly connected to the outer side wall surface of the lifting platform 10 by bolts. Second friction block 320 is coupled to second mount 310 for frictional contact with first side 210 of upright 20.

Further, a second friction block 320 is adjustably coupled to second mounting block 310 in a direction toward or away from upright 20. The second adjusting unit 340 is used to adjust the position of the second friction block 320 relative to the second mount 310.

The size of the gap between the second friction block 320 and the first side 210 of the upright post 20 can be adjusted by the second adjusting unit 340, so that the gap can meet the design requirements.

As an example, the second friction block 320 is provided with a second waist-shaped hole 323, and the second waist-shaped hole 323 extends along a direction perpendicular to the extending direction of the upright post 20. The second friction block 320 and the second mounting base 310 may be connected by a screw, and the screw is inserted through the second kidney-shaped hole 323.

As an example, the second adjusting unit 340 includes a second adjusting lever 341, and the second adjusting lever 341 is screwed to the second mount 310. The axis of the second adjustment rod 341 is perpendicular to the extending direction of the upright post 20, and one end of the second adjustment rod 341 is abutted against the second friction block 320.

When the second friction block 320 needs to be adjusted, the second adjustment rod 341 is rotated, so that the second adjustment rod 341 pushes the second friction block 320 to move relative to the second mounting base 310.

The second friction block 320 includes a second body 321 and a second wear-resistant member 322, the second body 321 is adjustably connected to the second mounting seat 310, and the second wear-resistant member 322 is detachably connected to the second body 321 and is configured to be in frictional contact with the first side surface 210.

The second wear elements 322 may be made of a wear resistant material. The second wear-resistant part 322 is detachably connected with the second body 321, so that the second wear-resistant part 322 can be replaced conveniently.

As an example, the second wear-resistant part 322 and the second body 321 may be connected by a screw, but not limited thereto.

The fixed jaw assembly 30 further includes a limiting block 330 connected to the second mounting base 310 for limiting the relative movement of the second wear member 322 with respect to the second body 321 when the second wear member 322 is in frictional contact with the first side 210.

It will be appreciated that when the second wear member 322 is in frictional contact with the first side 210 of the upright 20, the second wear member 322 will have a tendency to move upwardly along the upright 20 due to the frictional forces generated between the second wear member 322 and the upright 20. If the strength of the connection between the second wear-resistant part 322 and the second body 321 is not sufficient, the second wear-resistant part 322 will move relative to the second body 321. If the second wear-resistant member 322 is connected to the second body 321 by a screw, the screw is subjected to a shearing force due to the relative movement of the second wear-resistant member 322 with respect to the second body 321, and the screw is easily broken.

In this embodiment, the limiting block 330 is disposed to limit the movement of the second wear-resistant part 322 relative to the second body 321, so as to avoid affecting the connection stability between the second wear-resistant part 322 and the second body 321.

As shown in fig. 7, fig. 7 is a partially enlarged view at X1 in fig. 4. The elevating platform 10 includes a stopper plate 110. The lifting mechanism further comprises a lifting rope 60, and the lifting rope 60 is used for driving the lifting platform 10 to lift. The lifting rope 60 is inserted into the through hole 111 of the stop plate 110, and the driving assembly 50 is connected to one end of the lifting rope 60 and can be stopped by the stop plate 110, so that the lifting platform 10 is suspended from one end of the lifting rope 60 by the driving assembly 50 in a normal state.

Specifically, in the normal state, the driving element 50 is connected to one end of the lifting rope 60, and the driving element 50 abuts against the stop plate 110 of the lifting platform 10. One end of lift cord 60 is connected to stop plate 110 of lift table 10 via drive assembly 50, and lift cord 60 can pull lift table 10 to raise or lower. It will be appreciated that the weight of lift platform 10 is balanced by the tension of lift cord 60 such that lift cord 60 pulls lift platform 10 up and down.

It is understood that the "normal state" refers to a state in which the elevating platform 10 is normally raised and lowered without breaking the lifting rope 60 and without stalling the driving motor.

As shown in fig. 8-10, fig. 8 is a perspective view of the movable jaw assembly 40 and the drive assembly 50 of fig. 1, shown installed. Fig. 9 shows a side view of the schematic of fig. 8. Fig. 10 showsbase:Sub>A cross-sectional view alongbase:Sub>A-base:Sub>A in fig. 9. The driving assembly 50 includes a pressure receiving member 510 and an elastic member 520.

The pressure receiving member 510 has receiving grooves 511 and through holes 512 communicating with each other, and the receiving grooves 511 and the through holes 512 penetrate through both opposite side surfaces of the pressure receiving member 510 in the vertical direction. The lifting rope 60 passes through the accommodating groove 511 and the through hole 512, and one end of the lifting rope 60 exposed out of the pressed part 510 is connected with the pressed part 510 through a limiting member 80. Through the position-limiting member 80, the lifting rope 60 drives the pressed member 510 to move upward together.

As described above, since the top of the pressure-receiving member 510 abuts against the stop plate 110 of the lifting table 10, when the lifting rope 60 is lifted, the lifting table 10 can be lifted and lowered together by the pressure-receiving member 510.

It is understood that the stop 80 may be, but is not limited to, a nut that is threadedly engaged with the lift cord 60.

As an example, the lifting rope 60 includes a steel cable 610 and a pressing head 620, the pressing head 620 is fixedly connected to one end of the steel cable 610, the pressing head 620 is inserted into the receiving groove 511 and the through hole 512 of the pressed part 510, and the retaining member 80 is connected to a portion of the pressing head 620 exposed out of the pressed part 510.

The elastic element 520 is disposed in the receiving groove 511, one end of the elastic element 520 abuts against the stop plate 110, and the other end abuts against the bottom of the receiving groove 511, so as to apply an elastic force to the pressed element 510 in a direction away from the stop plate 110.

In a normal state, the elastic member 520 is disposed in the receiving groove 511 and is blocked in the receiving groove 511 by the stop plate 110 of the lifting platform 10, so that the elastic member 520 is in a compressed state.

When the lifting rope 60 is broken and/or the driving motor is stalled, the lifting platform 10 is dropped rapidly, and the elastic force of the elastic member 520 is released, so that the elastic member 520 applies an elastic force to the pressure receiving member 510 in a direction away from the stopper plate 110.

One end of the pressure receiving member 510 is connected to the movable jaw assembly 40. The pressure receiving member 510 drives the movable jaw assembly 40 to frictionally contact the second side 220 of the upright 20 under the elastic force of the elastic member 520.

It is understood that the elastic member 520 may be a spring, such as a compression spring, but not limited thereto.

A spacer 530 may be further disposed between the elastic member 520 and the stopper plate 110, and one end of the elastic member 520 abuts against the stopper plate 110 through the spacer 530. By providing the spacer 530, one end of the elastic member 520 is prevented from being inserted into the penetration hole 111 of the stopper plate 110.

Referring to fig. 7, the lifting mechanism further includes a protection switch 70 and a controller (not shown), wherein the protection switch 70 is connected to the lifting platform 10 for obtaining a movement signal of the driving assembly 50. The controller is in signal connection with the protection switch 70 for locking the motor of the lifting mechanism according to the movement signal of the driving assembly 50.

As an example, the protection switch 70 may include a proximity switch, a travel switch, and the like, but is not limited thereto.

It will be appreciated that when the lift cord 60 is not broken and the driving motor stalls, the lift platform 10 drops down rapidly and the pressure receiving member 510 moves away from the stopper plate 110 by the elastic force of the elastic member 520. At this time, the protection switch 70 may obtain a moving signal of the pressed piece 510, and the controller may control the driving motor to lock the brake according to the moving signal, so as to prevent the lifting platform 10 from further dropping.

It is understood that the pressure receiving member 510 has a diameter-varied portion 513 at the outer circumference thereof. The size of the diameter-variable portion 513 is different from the size of the pressure receiving member 510 at other positions. When the pressure-receiving member 510 moves away from the stopper plate 110, the protection switch 70 can more easily obtain a movement signal of the pressure-receiving member 510 through the variable diameter portion 513.

In an embodiment, the reducing portion 513 may be a chamfer, but is not limited thereto.

As shown in fig. 11, fig. 11 is a schematic view of the protection switch 70 of fig. 4. The protection switch 70 may be fixedly coupled to the platform 10 by a mounting bracket 71.

As shown in fig. 8, 9 and 12, fig. 12 shows a partial cross-sectional view of a portion of the slider 440 of fig. 8 cut away. The movable jaw assembly 40 includes a first mounting seat 410, a first friction block 420, a sliding member 440, and a linkage unit 430.

The first mounting base 410 is fixedly connected to the lifting platform 10, for example, the first mounting base 410 is fixedly connected to the lifting platform 10 by screws. The first friction block 420 is movably coupled to the first mount 410. The slider 440 is connected to the first mounting seat 410 for pressing the first friction block 420 together with the upright 20 when the first friction block 420 is in frictional contact with the upright 20. The first friction block 420 and the slider 440 are slidably coupled in the sliding direction by a sliding structure 460. The linkage unit 430 is connected to the first friction block 420 and the driving assembly 50, and is used for driving the first friction block 420 to move towards the direction close to the upright post 20 until the first friction block 420 is in friction contact with the second side surface 220 when the driving assembly 50 works.

The first friction block 420 is slidably connected to the first mounting base 410 along a sliding direction, and the sliding direction is inclined relative to the extending direction of the length of the upright column 20, so that the linkage unit 430 drives the first friction block 420 to move upward and close to the upright column 20.

It can be understood that when the first friction block 420 is slid obliquely upward along the sliding direction, the first friction block 420 is in frictional contact with the second side surface 220 of the pillar 20, and the frictional force is used to reduce the falling speed of the elevating platform 10. Meanwhile, the friction force causes the first friction block 420 to continue to slide along the sliding direction, and since the sliding direction is inclined upwards, the first friction block 420 is pressed by the sliding member 440 to continue to press the second side surface 220 of the upright post 20, and the friction force between the first friction block 420 and the upright post 20 is further increased until the lifting platform 10 stops falling.

As shown in fig. 13 and 14, fig. 13 is a schematic view of first friction block 420. Fig. 14 shows a schematic view of the slider 440. The first friction block 420 has a first sliding surface 421 and the slider 440 has a second sliding surface 441. The first and second sliding surfaces 421 and 441 are each parallel to the sliding direction and slidably fitted, and the second sliding surface 441 presses the first friction block 420 at least in a direction perpendicular to the upright 20 when the first friction block 420 is in frictional contact with the upright 20.

The first sliding surface 421 and the second sliding surface 441 are both obliquely arranged and parallel to the sliding direction. When the first friction block 420 is in frictional contact with the upright column 20, the first sliding surface 421 and the second sliding surface 441 can not only slide relatively, but the second sliding surface 441 can also press the first friction block 420 at least in a direction perpendicular to the upright column 20, so as to increase the friction force between the first friction block 420 and the upright column 20, and help to stop the lifting platform 10 in time.

The slide member 440 has a slide groove 442, and a groove bottom of the slide groove 442 forms a second slide surface 441. At least a portion of first friction block 420 is slidably disposed in sliding slot 442.

With continued reference to fig. 12-14, the sliding structure 460 includes an elongated hole 461, a first mounting hole 462, a first pin 463, a second mounting hole 464, and a second pin 465.

The elongated hole 461 is provided on one of the first friction block 420 and the slider 440 and extends in the sliding direction. The first and second mounting holes 462 and 464 are formed in the other of the first friction block 420 and the slider 440. The first pin 463 is inserted into the elongated hole 461 and the first mounting hole 462 and is movable in the extending direction of the elongated hole 461. The second pin 465 is inserted into the elongated hole 461 and the second mounting hole 464, and is movable along the extending direction of the elongated hole 461.

As an example, a long hole 461 is provided on the first friction block 420, a first mounting hole 462 and a second mounting hole 464 are provided on the slider 440, and the second mounting hole 464 is spaced apart from the first mounting hole 462 in the sliding direction. When the first friction block 420 slides in the sliding direction with respect to the slider 440, the first pin 463 and the second pin 465 move in the extending direction of the elongated hole 461.

In a state where the first friction block 420 is not in frictional contact with the upright column 20, the first pin 463 abuts against one end of the elongated hole 461 close to the upright column 20. The first pin 463 abuts against one end of the elongated hole 461 close to the upright post 20, so that the first friction block 420 does not slide downward in a normal state.

As shown in fig. 12, the slider 440 is movably coupled to the first mount 410. The movable jaw assembly 40 further comprises a first adjustment unit 450, the first adjustment unit 450 being connected to the first mounting block 410 for adjusting the position of the slider 440 relative to the first mounting block 410 in a direction away from or towards the upright 20.

The position of the sliding member 440 relative to the first mounting seat 410 can be adjusted by the first adjusting unit 450, so as to adjust the gap between the first friction block 420 and the second side surface 220 of the upright post 20, so that the gap can meet the design requirement.

Further, the sliding member 440 is movably connected to the first mounting seat 410 in a direction perpendicular to the extending direction of the pillar 20.

As an example, the sliding member 440 has a first waist-shaped hole 443, and the first waist-shaped hole 443 extends along a direction perpendicular to the extending direction of the upright post 20. The sliding member 440 and the first mounting seat 410 can be connected by a screw, and the screw is inserted through the first waist-shaped hole 443.

As an example, the first adjusting unit 450 includes a first adjusting lever 451, and the first adjusting lever 451 is screwed to the first mount 410. The axis of the first adjustment bar 451 is perpendicular to the extending direction of the upright post 20, and one end of the first adjustment bar 451 is abutted against the slider 440.

When the first friction block 420 needs to be adjusted, the first adjustment bar 451 is rotated, so that the first adjustment bar 451 abuts against the sliding member 440 to move relative to the first mounting seat 410.

The first friction block 420 includes a first body 422 and a first wear member 423, the first body 422 is slidably coupled to the slider 440, and the first wear member 423 is detachably coupled to the first body 422 and is adapted to be in frictional contact with the second side 220. The elongated hole 461 may be opened on the first body 422.

The first wear member 423 may be made of a wear resistant material. The first wear-resistant member 423 is detachably connected with the first body 422, so that the first wear-resistant member 423 can be replaced conveniently.

As an example, the first wear member 423 and the first body 422 may be connected by screws, but not limited thereto.

As shown in fig. 9 and 15, fig. 15 shows a cross-sectional view along B-B in fig. 9. The interlocking unit 430 includes a swinging member 431 and a jacking member 432. The swing member 431 is hinged to the first mounting seat 410, and one end of the swing member 431 is floatingly connected to the driving assembly 50. One end of the lift member 432 is connected to the first friction block 420, and the other end of the lift member 432 abuts the other end of the swinging member 431.

Specifically, the pressure receiving member 510 of the driving assembly 50 is floatingly connected to the swinging member 431. As an example, the swinging member 431 has a notch 433 at one end, and the pressure receiving member 510 is floatingly disposed in the notch 433. When the pressure receiving member 510 starts to move downward by the elastic force of the elastic member 520, the pressure receiving member 510 pushes against the edge of the notch 433 of the swinging member 431, so that the swinging member 431 swings.

When the elastic force of the driving assembly 50 is released, the swinging member 431 can be driven to swing relative to the first mounting seat 410, and then the swinging member 431 can push against the lifting member 432, and finally the first friction block 420 can slide along the sliding direction.

As an example, the hinge axis of the swinging member 431 and the first mounting seat 410 may be horizontally disposed.

When the pressure receiving member 510 moves downward, the diameter-variable portion 513 of the pressure receiving member 510 may abut against the edge of the notch 433 of the swinging member 431, thereby driving the swinging member 431 to swing.

As shown in fig. 7, the lifting mechanism further includes a reset member 90, and the reset member 90 is connected to the lifting table 10 and the interlocking unit 430, and is used for resetting the interlocking unit 430.

As an example, the restoring member 90 may be a spring, such as a tension spring. One end of the restoring member 90 is connected to the stopper plate 110 of the elevating platform 10, and the other end of the restoring member 90 is connected to the swinging member 431. The returning member 90 may provide the swinging member 431 with an elastic force moving toward the normal state when the driving motor is not stalled and the lift cord 60 is not broken.

For example, in the normal state, the swinging member 431 is horizontally disposed. The swinging member 431 does not contact the jacking members 432, or the swinging member 431 just contacts the jacking members 432.

In another aspect of the present invention, a stacker is further provided, where the stacker includes the lifting mechanism in any one of the above embodiments. Due to the fact that the stacker comprises the lifting mechanism of any one of the above embodiments, the stacker of the embodiments of the present invention has all the advantages and beneficial effects of any one of the above embodiments, and details are not described here.

The stacker may further include a traveling mechanism that is movable along a track disposed on a road surface. The lifting mechanism can be arranged on the travelling mechanism.

The lifting mechanism according to the embodiment of the present invention is not limited to be applied to a stacker, and may be applied to any device that needs to implement a lifting function, for example, a hoist.

It is understood that the various embodiments/implementations provided by the present invention can be combined with each other without contradiction, and are not illustrated herein.

In the embodiments of the invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. Specific meanings of the above terms in the embodiments of the invention may be understood by those of ordinary skill in the art according to specific situations.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present invention.

In the description herein, reference to the term "one embodiment," "some embodiments," "a specific embodiment," or the like, means 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 do not necessarily 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.

The above embodiments are merely preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the embodiments of the invention should be included in the protection scope of the embodiments of the invention.

Claims (15)

1. A lift mechanism, comprising:

an elevating platform (10);

the upright column (20) is arranged on the side surface of the lifting platform (10);

the fixed clamp assembly (30) is fixedly connected to the lifting platform (10) and arranged on the first side surface (210) of the upright post (20);

the movable clamp assembly (40) is connected to the lifting platform (10) and arranged on the second side surface (220) of the upright post (20); and

and the driving assembly (50) is used for driving the movable clamp assembly (40) to be in frictional contact with the second side surface (220) when the lifting platform (10) falls down, and enabling the movable clamp assembly (40) to push the lifting platform (10) to generate torsion until the fixed clamp assembly (30) is in frictional contact with the first side surface (210).

2. The lifting mechanism according to claim 1, characterized in that the second side (220) is arranged opposite to the first side (210); the lifting mechanism comprises two upright columns (20), and the two upright columns (20) are respectively arranged on two opposite side surfaces of the lifting platform (10);

the lifting mechanism comprises two groups of fixed clamp assemblies (30) and movable clamp assemblies (40) which are correspondingly arranged, and each group of the fixed clamp assemblies (30) and the movable clamp assemblies (40) are respectively arranged on the first side surface (210) and the second side surface (220) of the upright post (20);

along the arrangement direction of the two upright posts (20), the fixed clamp assemblies (30) of one group are arranged corresponding to the movable clamp assemblies (40) of the other group.

3. The lifting mechanism according to claim 1, characterized in that the lifting platform (10) comprises a stop plate (110); the lifting mechanism further comprises:

the lifting rope (60) is used for driving the lifting platform (10) to lift; the lifting rope (60) penetrates through a through hole (111) of the stop plate (110), the driving assembly (50) is connected to one end of the lifting rope (60) and can be stopped by the stop plate (110), and therefore in a normal state, the lifting platform (10) is suspended at one end of the lifting rope (60) through the driving assembly (50).

4. The lifting mechanism, as set forth in claim 3, characterized in that the drive assembly (50) comprises:

the compression piece (510) is provided with an accommodating groove (511) and a through hole (512) which are communicated with each other, the lifting rope (60) penetrates through the accommodating groove (511) and the through hole (512), and one end of the lifting rope (60) exposed out of the compression piece (510) is connected with the compression piece (510) through a limiting piece (80); one end of the pressure piece (510) is connected to the movable clamp assembly (40); and

elastic component (520), locate in holding tank (511), the one end of elastic component (520) support in backstop board (110), the other end support in the tank bottom of holding tank (511) is used for to receive piece (510) and apply the elastic force of keeping away from backstop board (110) direction.

5. The lift mechanism of claim 1, further comprising:

a protection switch (70) connected to the lifting platform (10) and used for obtaining a movement signal of the driving component (50); and

and the controller is in signal connection with the protection switch (70) and is used for locking the motor of the lifting mechanism according to the movement signal.

6. The lift mechanism of claim 1, wherein the movable jaw assembly (40) comprises:

a first mounting base (410) fixedly connected to the lifting platform (10);

a first friction block (420) slidably connected to the first mounting seat (410) along a sliding direction, wherein the sliding direction is obliquely arranged relative to the extending direction of the length of the upright post (20); and

the linkage unit (430) is connected to the first friction block (420) and the driving assembly (50) and used for driving the first friction block (420) to move upwards and close to the upright post (20) until the first friction block (420) is in friction contact with the second side surface (220) when the driving assembly (50) works.

7. The lifting mechanism according to claim 6, wherein the movable jaw assembly (40) further comprises a slider (440), the first friction block (420) being slidably connected to the slider (440) in the sliding direction by a sliding structure (460);

the slider (440) is connected to the first mounting seat (410) for pressing the first friction block (420) together with the upright (20) when the first friction block (420) is in frictional contact with the upright (20).

8. The lifting mechanism according to claim 7, characterized in that the first friction block (420) has a first sliding surface (421), the slide (440) has a slide groove (442), a groove bottom of the slide groove (442) forming a second sliding surface (441);

at least part of the first friction block (420) is slidably arranged in the sliding groove (442), the first sliding surface (421) and the second sliding surface (441) are both parallel to the sliding direction and slidably fit, and the second sliding surface (441) presses the first friction block (420) at least in a direction perpendicular to the upright (20) when the first friction block (420) is in frictional contact with the upright (20).

9. The lift mechanism of claim 7, wherein the sliding structure (460) comprises:

a long hole (461) provided in one of the first friction block (420) and the slider (440) and extending in the sliding direction;

a first mounting hole (462) provided in the other of the first friction block (420) and the slider (440);

a second mounting hole (464) provided in the other of the first friction block (420) and the slider (440) and spaced from the first mounting hole (462) in the sliding direction;

a first pin (463) inserted into the elongated hole (461) and the first mounting hole (462) and movable in the extending direction of the elongated hole (461); and

and the second pin shaft (465) is arranged in the elongated hole (461) and the second mounting hole (464) in a penetrating manner and can move along the extending direction of the elongated hole (461).

10. The lifting mechanism according to claim 9, wherein the first pin (463) abuts against an end of the elongated hole (461) close to the column (20) in a state where the first friction block (420) is not in frictional contact with the column (20).

11. The lift mechanism of claim 7, wherein the slider (440) is movably connected to the first mount (410);

the movable jaw assembly (40) further comprises a first adjustment unit (450), the first adjustment unit (450) being connected to the first mounting seat (410) for adjusting the position of the slider (440) relative to the first mounting seat (410) in a direction away from or towards the upright (20).

12. The lifting mechanism according to claim 6, wherein the interlocking unit (430) comprises:

a swinging piece (431) hinged to the first mounting seat (410), wherein one end of the swinging piece (431) is connected to the driving component (50) in a floating mode; and

and a lift-up member (432) having one end connected to the first friction block (420) and the other end abutting against the other end of the swinging member (431).

13. The lifting mechanism according to claim 6, further comprising a reset member (90) connected to the lifting table (10) and the interlocking unit (430) for resetting the interlocking unit (430).

14. The lifting mechanism according to claim 1, characterized in that the stationary jaw assembly (30) comprises:

a second mounting base (310) fixedly connected to the lifting platform (10);

a second friction block (320) comprising a second body (321) and a second wear part (322), said second body (321) being adjustably connected to said second mounting seat (310) in a direction towards or away from said upright (20), said second wear part (322) being connected to said second body (321) for frictional contact with said first side surface (210); and

a stop block (330) connected to the second mounting seat (310) for limiting relative movement of the second wear member (322) with respect to the second body (321) when the second wear member (322) is in frictional contact with the first side surface (210).

15. A stacker crane comprising the lifting mechanism of any one of claims 1 to 14.

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