CN111646386A

CN111646386A - Lifting device

Info

Publication number: CN111646386A
Application number: CN202010648911.0A
Authority: CN
Inventors: 赖建防; 吕伟宏; 李善东; 林江南; 陈云; 任典跃
Original assignee: Xiangshan County Technical School; Ningbo Tianhong Power Appliance Co Ltd
Current assignee: Xiangshan County Technical School; Ningbo Tianhong Power Appliance Co Ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2020-09-11

Abstract

The invention relates to a lifting device which comprises a guide rail, a mounting frame, a carrying platform, a power assembly, a lifting assembly, a locking assembly, a control assembly and a roller assembly, wherein the mounting frame is arranged on the guide rail; the roller assembly comprises a fixed roller and a movable roller, and the fixed roller and the movable roller are provided with a plurality of groups and are arranged on the mounting rack at intervals along the vertical direction; the fixed roller is rotatably arranged on the inner side of the mounting rack and is suitable for abutting against the front side of the guide rail; the movable roller is arranged on the outer side of the mounting rack and is suitable for abutting against the rear side of the guide rail; the fixed idler wheel is matched with the movable idler wheel to realize horizontal limiting and vertical movement of the mounting rack relative to the guide rail; the movable roller comprises a rotating rod, a sliding block, a wheel body and a locking piece. The modularized split type solar water heater has the advantages of being convenient to assemble and disassemble, safe, reliable and stable in operation.

Description

Lifting device

Technical Field

The invention relates to tool equipment, in particular to a lifting device.

Background

The lifting device is a device for realizing the back and forth movement of a person or an object at a low position and a high position, and the important indexes of the lifting device are as follows: 1. safety; 2. the detachability is realized; 3. has the functions of crisis relief and escape.

At present, a common lifting mechanism comprises a civil elevator and a lifting ladder for buildings. The civil elevator has higher requirements on supporting facilities and can not be used in outdoor operation generally; adopt the cable to realize promoting, the cable fracture easily takes place the accident of falling, in addition, has a power failure and is unfavorable for fleing in the operation. The elevator for the building is suitable for outdoor use, but a steel pipe support needs to be erected, so that the building is relatively complex, and the cost is high; meanwhile, the building elevator is lifted by adopting a cable, the falling accident is easy to happen due to the breakage of the cable, and the safety is not high. In addition, if power failure occurs, the device is not beneficial to rescue when being in high altitude, and has no functions of crisis relief and escape.

Because outdoor operation scenes are different, for example, in the field of electric power construction, lifting climbing equipment is needed when operation and construction are needed on a high-rise electric tower, and due to the limitation of construction sites, the existing building elevator is inconvenient to use; if the fire scene, normal passageway is blocked, does not have effective jacking equipment to assist rescue work.

The inventor designs a plurality of lifting devices for the purpose. For example, the chinese patent publication No. CN107640721A, a lifting device with a full mechanical variable speed centrifugal locking assembly, is one of the lifting devices designed by the present inventors. However, in the practical use process, the inventor finds that the lifting device with the structure has potential safety hazards, mainly aims to realize that people stand on the carrier and only pull the handle to perform safety protection, and cannot meet the safety protection requirement; in addition, the upgrading device is inconvenient in installation, transportation and maintenance. Therefore, the inventor also designs an improved lifting device with a full-mechanical variable-speed centrifugal locking assembly in the Chinese patent of invention with the publication number of CN109110612A, adds a protection assembly and a locking wheel assembly, and improves the lifting assembly, so that the lifting device is safer and more reliable, and is convenient to mount, carry and maintain and stable to operate. However, the inventor finds that the following problems still exist in the past lifting devices in subsequent use: (1) the volume is large, the whole weight is heavy, and the carrying are inconvenient during outdoor operation; (2) in order to realize the limit of the mounting frame on the guide rail along the horizontal direction, the locking wheel assembly is necessary, but before the mounting frame is mounted on the guide rail, the locking wheel assembly is dismounted, then the mounting frame is close to the guide rail, and finally the locking wheel assembly is mounted on the outer side of the guide rail to realize the horizontal limit; the assembling and disassembling process is time-consuming and labor-consuming, frequent assembling and disassembling causes great damage to the fastening piece, loosening is easy to occur, and potential safety hazards exist; (3) there are still functional drawbacks, especially in terms of intelligent control.

Therefore, it is an urgent need to solve the above problems by improving the conventional lifting device.

Disclosure of Invention

The invention aims to provide a lifting device which is modularized and arranged in a split manner, is convenient to assemble and disassemble, is safe and reliable and runs stably.

Another object of the present invention is to provide a roller assembly of a lifting device, which is easy and convenient to operate, reliable in locking and stable in operation.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a lifting device comprises a guide rail, a mounting frame, a carrying platform, a power assembly, a lifting assembly, a locking assembly, a control assembly and a roller assembly;

the guide rail is fixedly arranged along the vertical direction;

the mounting frame is movably arranged on the guide rail along the vertical direction, the mounting frame comprises an upper support and a lower support which are connected in a segmented manner, the carrying platform, the power assembly and the lifting assembly are arranged on the lower support, and the locking assembly and the control assembly are arranged on the upper support;

the carrying platform is unfolded along the horizontal direction and is used for carrying people or objects;

the power assembly is suitable for driving the lifting assembly to operate;

the lifting assembly is suitable for acting on the guide rail and driving the mounting rack to move along the guide rail;

the locking assembly is suitable for limiting the descending speed of the lifting device;

the control assembly comprises a control box and a control handle, the control box is integrally arranged and detachably arranged on the upper support, the control handle is arranged at the upper end of the upper support, and the control handle is matched with the control box and used for controlling the operation of the power assembly;

the roller assembly comprises a fixed roller and a movable roller, and the fixed roller and the movable roller are provided with a plurality of groups and are arranged on the mounting rack at intervals along the vertical direction; the fixed roller is rotatably arranged on the inner side of the mounting rack and is suitable for abutting against the front side of the guide rail; the movable roller is arranged on the outer side of the mounting rack and is suitable for abutting against the rear side of the guide rail; the fixed idler wheel is matched with the movable idler wheel to realize horizontal limiting and vertical movement of the mounting rack relative to the guide rail;

the movable roller comprises a rotating rod, a sliding block, a wheel body and a locking piece, the rotating rod is rotatably arranged on the mounting frame along the horizontal direction, the rear end of the sliding block is slidably arranged on the rotating rod, the wheel body is rotatably arranged at the front end of the sliding block, and the locking piece is movably arranged on the rotating rod, is suitable for abutting against the sliding block and is used for limiting the backward displacement of the sliding block; the rotating rod rotates outwards, and the sliding block slides towards the rear side, so that the movable roller is in an unlocking state; the dwang rotates to the inboard, the sliding block slides to the front side, simultaneously the locking piece is to the activity of front side, until the wheel body is contradicted the guide rail rear side can make movable gyro wheel is in the locking state.

As an improvement, a rotating groove is formed in the inner side of the mounting frame, an abdicating groove penetrating through the rotating groove is further formed in the mounting frame, a rotating column is arranged at the front end of the rotating rod and is suitable for penetrating through the abdicating groove, and the rotating column is suitable for being rotatably arranged in the rotating groove; the structure is simple and reliable in rotating connection mode and convenient to assemble.

The locking piece is in threaded connection with the rear end of the rotating rod, an operating handle extends out of the locking piece, and the operating handle is suitable for rotating the locking piece. The above structure allows the locking member to be conveniently operated without any tool.

Furthermore, the sliding block comprises a connecting block and an installing plate, the rotating rod is suitable for penetrating through the connecting block, an extending hole is further formed in the rear end of the connecting block, and the locking piece is suitable for entering the extending hole and abutting against the sliding block; the wheel body is suitable for being rotatably arranged on the mounting plate, the mounting plate extends inwards to form a protective cover, the protective cover wraps the wheel body, an arc-shaped groove is formed in the front side of the protective cover, and the guide rail penetrates through the arc-shaped groove and abuts against the wheel body; the mounting bracket rear side is opened and is equipped with the spacing groove, the mounting panel extends spacing lug forward, spacing lug is suitable for getting into the spacing groove, and the restriction movable roller outwards rotates. The structure ensures the safety and reliability of the movable roller when being locked.

As an improvement, two support plates extend out of the lower end of the mounting frame towards the front side, and the power assembly is arranged between the two support plates;

the carrying platform comprises a base frame, an extension platform and fasteners, wherein the base frame is fixedly arranged on the supporting plate, the extension platform is provided with two blocks which are arranged on the base frame in a sliding mode, the extension platform can slide towards the inner side or the outer side and is used for changing the usable area of the carrying platform, and the fasteners are arranged between the base frame and the fasteners and are used for limiting the extension platform to slide on the base frame. Has stronger applicability.

Preferably, a hanging hole is formed in the rear side of the control box, a hook is arranged on the mounting frame, the control box is suitable for entering and exiting the hanging hole through the hook and is detachably mounted on the mounting frame;

the hook is rotatably arranged on the mounting frame, a limiting hole is formed in the rear end of the hook, and a limiting bead is fixedly arranged on the mounting frame; the couple upwards overturns and can make spacing pearl gets into spacing hole, and makes the couple is in and treats the installation condition, the control box install in when the couple is last, the couple can be under the effect of control box weight, overturn downwards, and make spacing hole breaks away from spacing pearl, just the mounting bracket is hugged closely to the control box rear side. The control box is convenient to assemble and disassemble.

The original design is kept, the locking assembly comprises a rotating piece, a transmission speed change piece, a rotary table, a centrifugal piece and a brake part, the rotating piece is rotatably connected to the mounting frame, when the mounting frame moves on the guide rail, the rotating piece acts on the guide rail to rotate, the rotary table is rotatably connected to the mounting frame, the rotating piece drives the rotary table to rotate through the transmission speed change piece, the centrifugal piece is slidably arranged on the rotary table, when the rotating speed of the rotary table exceeds a set value, the centrifugal piece can slide outwards under the action of centrifugal force to contact the brake part, so that the brake part acts, and the brake part acts on the guide rail to limit the movement of the mounting frame;

the brake component comprises a lock hook, a clamping column, a brake sliding block and a pulling spring, one end of the lock hook is rotatably connected to the brake sliding block, the clamping column is fixedly arranged on the mounting frame, the middle section of the lock hook can be clamped on the clamping column, the other end of the lock hook can contact the centrifugal piece, the brake sliding block is slidably arranged on the mounting frame, and the pulling spring is arranged between the brake sliding block and the mounting frame; when the lifting device normally operates, the rotating speed of the rotary table is low, the centrifugal piece rotates along with the rotary table at the moment and does not contact the lock hook, the lock hook is locked on the clamping column, the brake sliding block is not contacted with the guide rail, and the pulling spring is in a stretching state; when elevating gear descends at a high speed, the carousel rotational speed increases, and at this moment the centrifugation piece follows the carousel pivoted in the time, and outside slip under the centrifugal force effect, until the contact the latch hook promotes the latch hook rotates, makes the latch hook breaks away from the card post, the quick shrink of pulling spring, the pulling the brake slider slides fast, until the contact the guide rail brake slider with under the guide rail interact, the restriction the mounting bracket motion.

The lock hook and the clamping column are both electric conductors, wires are electrically connected to the lock hook and the clamping column to form a switch structure, the switch structure is connected with the power assembly in series, and when the lock hook is separated from the clamping column, the power assembly is disconnected;

the mounting frame is provided with an inclined sliding groove, the brake sliding block is arranged in the inclined sliding groove in a sliding mode, a contact surface, which can be contacted with the guide rail, of the brake sliding block is always parallel to the guide rail, and when the brake sliding block moves from one end of the inclined sliding groove to the other end, the brake sliding block gradually approaches to or is far away from the guide rail;

a return spring is also arranged between the turntable and the centrifugal piece; the other end of the lock hook is in threaded connection with a contact block, the contact block is in contact with the centrifugal piece, and the distance between the contact block and the centrifugal piece can be adjusted by rotating the contact block on the lock hook.

As an improvement, the control box is provided with a remote communication module, and the lifting device can be remotely controlled to operate through the control box;

the lifting device further comprises an anti-locking assembly, the anti-locking assembly comprises a locking needle and an expansion spring, a locking hole is formed in the brake slider, the locking needle is J-shaped, the locking needle is arranged on the mounting frame in a sliding mode along the horizontal direction, the locking needle can rotate along the mounting frame, and the expansion spring is arranged between the mounting frame and the locking needle and forces the locking needle to slide inwards; when the brake sliding block is not touched, the locking pin can rotate to the locking hole and enters the locking hole through the elasticity of the telescopic spring to limit the sliding of the brake sliding block. In remote control, the speed of descent may be unlimited, and an anti-lock assembly is provided for disabling the braking components.

As an improvement, the brake slider includes metal connecting block and plastics contact block, the metal connecting block is suitable for sliding connection the mounting bracket, plastics contact block is suitable for contradicting the guide rail. The maintenance of the brake sliding block is convenient.

The lifting device is characterized in that the original design is kept, the lifting device further comprises a protection assembly, the protection assembly comprises two connecting seats, two pin shafts and a U-shaped guardrail, the two connecting seats are fixedly arranged on the mounting frame and respectively extend to two sides along the horizontal direction, the two pin shafts are respectively arranged on the connecting seats along the vertical direction, at least one pin shaft can be separated from the connecting seats, rotating sleeves are arranged at two ends of the U-shaped guardrail, the two pin shafts can penetrate through the two rotating sleeves to fix the U-shaped guardrail on the connecting seats, and the U-shaped guardrail can be rotatably arranged on the pin shafts through the rotating sleeves;

a gear set is arranged between the power assembly and the lifting assembly, the power assembly drives the lifting assembly to rotate through the gear set, the gear set comprises a first gear, a second gear and a third gear, the first gear is fixedly arranged on a rotating shaft of the power assembly, the second gear is rotatably arranged on the mounting frame, the third gear is fixedly arranged on the connecting rotating shaft of the lifting assembly, the first gear is meshed with the second gear, and the second gear is meshed with the third gear; a conical tensioning sleeve is arranged on a rotating shaft of the power assembly, and the first gear is fixed on the conical tensioning sleeve through a tensioning bolt.

Compared with the prior art (mainly the lifting device products of the last generations designed by the inventor), the invention has the improvement points and advantages that:

1. three major parts can be dismantled into to this scheme, are upper bracket module, lower bracket module and control box module respectively, and convenient transportation, carrying, transport behind the three module separation to can make things convenient for the region operation that the staff is complicated at topography such as mountain area, forest zone at job site rapid Assembly.

2. The carrying platform has extensibility, and the using area can be large or small, so as to adapt to different operation requirements. It is worth mentioning that the weight of the lifting device can reach more than 300 kilograms, two workers can stand even after the platform deck is unfolded, more articles can be placed after the platform deck is unfolded, and the applicability of the lifting device is greatly improved.

3. The control box adopts integrated modular design, can be used alone, can increase and decrease various functional modules as required moreover to satisfy different customers' purchasing demand. In addition, the control box can be installed on the installation frame by a single person through the rotation locking arrangement of the hook, and the control box is tightly attached to the installation frame under the action of gravity after installation, so that the control box cannot shake easily, and the control box has the advantages of convenience and reliability.

4. The key point is that the scheme carries out subversive improved design on the roller component. Specifically speaking, the structure that needs bolt loading and unloading with that kind of original locking wheel subassembly has been replaced to the activity and has set up on the mounting bracket and can conveniently carry out the activity gyro wheel structure of unblock and locking, and at unblock and locking in-process, single can accomplish and need not use any instrument moreover.

5. In order to be suitable for the remote control mode, the anti-locking assembly is arranged in the scheme. When carrying out remote control, elevating gear's falling speed does not need to control, prevents that the dead subassembly of lock can die the brake block lock through rotating, lets the brake block part inefficacy promptly, and whole upgrading device just can not be locked, can be according to actual demand this moment, control elevating speed.

Drawings

FIG. 1 is a schematic perspective view of a preferred embodiment of the present invention;

FIG. 2 is a schematic perspective view of three major portions separated from each other in accordance with a preferred embodiment of the present invention;

FIG. 3 is a schematic diagram of the internal structure of a preferred embodiment according to the present invention;

FIG. 4 is a half sectional view of a preferred embodiment according to the present invention;

FIG. 5 is an enlarged view taken at A in FIG. 4, in accordance with a preferred embodiment of the present invention;

FIG. 6 is a schematic view of the assembly of the movable roller, the mounting bracket and the guide rail according to a preferred embodiment of the present invention;

FIG. 7 is a schematic view of the movable roller exploded from the mounting bracket according to a preferred embodiment of the present invention;

FIG. 8 is a half sectional view of a movable roller according to a preferred embodiment of the present invention, with the left side showing a locked state and the right side showing an unlocked state;

FIG. 9 is a schematic perspective view of a movable roller according to a preferred embodiment of the present invention;

FIG. 10 is a half sectional view of a skid according to a preferred embodiment of the present invention;

FIG. 11 is a schematic structural view of a hook and an anti-lock assembly with the hook in a ready-to-install state and the anti-lock assembly in a non-operational state in accordance with a preferred embodiment of the present invention;

FIG. 12 is a schematic view of the hook and anti-lock assembly in accordance with a preferred embodiment of the present invention, with the hook in an installed condition and the anti-lock assembly in an operative condition;

FIG. 13 is a cross-sectional view taken along line B-B of FIG. 11, focusing on the principle of operation of the anti-lock assembly, in accordance with a preferred embodiment of the present invention;

fig. 14 is a schematic perspective view of the stage when expanded in accordance with a preferred embodiment of the present invention;

FIG. 15 is a schematic perspective view of a control box according to a preferred embodiment of the present invention;

fig. 16 is an exploded view of a gear set in accordance with a preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.

As shown in fig. 1 to 16, a preferred embodiment of the present invention includes a guide rail 100, a mounting frame 200, a carrier 300, a power assembly 400, a lifting assembly 500, a locking assembly 600, a control assembly 700, a roller assembly 800, an anti-locking assembly 900, a guard assembly 110, a gear set 120 and a road wheel 130; each component is described in detail below:

guide rail: the guide rail 100 is fixedly arranged along the vertical direction; in practical application, although the guide rail is an essential part of the lifting device, the lifting trolley formed by the guide rail and other components belongs to two parts, the guide rail 100 is usually fixedly installed on a fixed building needing lifting operation, such as an electric power tower section, a building outer wall and the like in advance, and the lifting trolley is installed on the guide rail 100 during operation.

Mounting frame: the mounting rack 200 is movably arranged on the guide rail 100 along the vertical direction, the mounting rack 200 comprises an upper support 201 and a lower support 202 which are connected in a segmented manner, the carrier 300, the power assembly 400, the lifting assembly 500, the gear set 120 and the walking wheel 130 are arranged on the lower support, and the locking assembly 600, the control assembly 700, the anti-locking assembly 900 and the protection assembly 110 are arranged on the upper support. Compared with the previous generation products, the mounting rack 200 of the embodiment adopts a segmented structure, and after the upper bracket and the lower bracket are separated, the overall height can be reduced, and the mounting rack is convenient to carry or transport; and the components on the upper bracket and the lower bracket are modularized and mutually independent, so that no obstacle is generated to separation and assembly. In this embodiment, the upper bracket 201 and the lower bracket 202 are fixed and connected in sections by using a steel plate 204 shaped like a Chinese character 'hui' and a bolt. Moreover, a light groove is milled on the inner side of the mounting frame 200, so that the overall weight of the lifting device is reduced, and the lifting device is convenient to carry and carry during outdoor operation.

Carrying platform: the carrier 300 is unfolded in the horizontal direction for carrying a person or a thing. To facilitate the installation of the carrier 300, two support plates 203 extend from the lower end of the mounting frame 200 to the front side. Compared with the previous products, the carrier 300 of the present embodiment adds an extended function, specifically: the carrier 300 comprises a base frame 301, an extension table 302 and fasteners 303, wherein the base frame 301 is fixedly arranged on the support plate 203, the extension table 302 is provided with two blocks and is arranged on the base frame 301 in a sliding mode, the extension table 302 can slide towards the inner side or the outer side and is used for changing the usable area of the carrier 300, and the fasteners 303 are arranged between the base frame 301 and the fasteners 302 and are used for limiting the extension table 302 to slide on the base frame 301. As shown in fig. 14, this embodiment shows two types of structures of the fastening device, one is a fastening knob structure, and the other is a spring thimble structure, and the extension table is provided with a plurality of positioning holes, and both the fastening knob and the spring thimble can enter the positioning holes, so as to fix the extension table on the bottom frame.

A power assembly: the power assembly 400 is adapted to drive the lifting assembly 500 to operate; in this embodiment, the power assembly 400 is disposed between the two support plates 203, so that the center of gravity of the lifting device is more stable. The power assembly 400 is of conventional construction and includes a motor and a reduction gearbox.

The lifting component: the lifting assembly 500 is adapted to act on the rail 100 to move the mounting bracket 200 along the rail 100. The present embodiment still uses the lifting assembly structure of the previous product: the guide rail 100 is provided with a gear groove, and the lifting assembly 500 has a gear structure matched with the gear groove. The lifting device 500 can adopt a double-pair one-main, double-main-pair and one-main-pair gear structure, and can be selected according to the manufacturing cost and the use requirement.

The locking assembly: the locking assembly 600 is adapted to limit the lowering speed of the lifting device. In this embodiment, a structure of the full mechanical speed-changing centrifugal locking assembly 600 is still adopted, specifically: locking subassembly 600 is including rotating piece 601, transmission gear change 602, carousel 603, centrifugation piece 604 and brake part, it connects on mounting bracket 200 to rotate a 601 rotation, mounting bracket 200 is when the activity on guide rail 100, it takes place to rotate the piece 601 effect in guide rail 100, carousel 603 rotates and connects on mounting bracket 200, it drives the carousel 603 through transmission gear change 602 and rotates to rotate a 601, centrifugation piece 604 slides and sets up on carousel 603, when the carousel 603 rotational speed surpassed the setting value, centrifugation piece 604 can slide to the outside under the centrifugal force effect, thereby contact brake part, make the brake part move, brake part acts on guide rail 100, restriction mounting bracket 200 motion. Further concretely: the brake component in this embodiment includes a latch hook 606, a latch post 607, a brake slider 608 and a pulling spring 609, one end of the latch hook 606 is rotatably connected to the brake slider 608, the latch post 607 is fixedly disposed on the mounting bracket 200, a middle section of the latch hook 606 can be latched to the latch post 607, the other end of the latch hook 606 can contact the centrifugal member 603, the brake slider 608 is slidably disposed on the mounting bracket 200, and the pulling spring 609 is disposed between the brake slider 608 and the mounting bracket 200. The working principle is as follows: when the lifting device normally operates, the rotating speed of the rotating disc 603 is low, at the moment, the centrifugal piece 604 rotates along with the rotating disc 603 and does not contact with the locking hook 606, the locking hook 606 is locked on the locking column 607, the brake sliding block 608 does not contact with the guide rail 100, and the pulling spring 609 is in a stretching state; when the lifting device descends at a high speed, the rotating speed of the rotating disc 603 is high, at the same time, the centrifugal piece 604 slides outwards under the action of centrifugal force while rotating along with the rotating disc 603 until contacting the locking hook 606, pushes the locking hook 606 to rotate, so that the locking hook 606 is separated from the clamping column 607, pulls the spring 609 to contract quickly, pulls the brake slider 608 to slide quickly until contacting the guide rail 100, and the mounting frame 200 stops moving under the interaction of the brake slider 608 and the guide rail 100. In addition, in order to increase the safety, the lock hook 606 and the clamping column 607 are both conductive bodies, and the lock hook 606 and the clamping column 607 are both electrically connected with conducting wires, so that a switch structure is formed, the switch structure is connected with the power assembly 400 in series, and when the lock hook 606 is separated from the clamping column 607, the power assembly 400 is disconnected, and the power assembly 400 is prevented from being burnt out due to idling. Moreover, the mounting bracket 200 is provided with an inclined sliding groove 205, the brake slider 608 is slidably disposed in the inclined sliding groove 205, a contact surface of the brake slider 608, which can be in contact with the guide rail 100, is always parallel to the guide rail 100, and when the brake slider 608 moves from one end of the inclined sliding groove 205 to the other end, the brake slider 608 gradually approaches or leaves the guide rail 100. A return spring 605 is also arranged between the turntable 603 and the centrifugal piece 604; the other end of the locking hook 606 is screwed with a contact block 610, the contact block 610 is in contact with the centrifugal member 604, and the distance between the contact block 610 and the centrifugal member 604 can be adjusted by rotating the contact block 610 on the locking hook 606. In consideration of practical application, a one-way gear (a ratchet structure can be adopted, and the function of one-way driving is achieved) is arranged between the rotating member 601 and the transmission speed changing member 602; when the lifting device descends, the rotating part 601 drives the transmission speed change part 602 to move through the one-way gear, and when the lifting device ascends, the transmission speed change part 602 does not move. Because the brake sliding block 608 is a wearing part and needs to be replaced periodically, the brake sliding block 608 is arranged in a split manner and respectively comprises a metal connecting block 6081 and a plastic contact block 6082, the metal connecting block 6081 is suitable for being connected with the mounting frame 200 in a sliding manner, the plastic contact block 6082 is suitable for abutting against the guide rail 100, and only the plastic contact block 6082 needs to be replaced when the brake sliding block is worn.

A control component: the control assembly 700 comprises a control box 710 and a control handle 720, the control box 710 is integrally and detachably arranged on the upper bracket 201, the control handle 720 is arranged at the upper end of the upper bracket 201, and the control handle 720 is matched with the control box 710 for controlling the operation of the power assembly 400. As shown in fig. 2, the control box 710 is an integrally formed modular device, so that the lifting device can be divided into three parts during transportation or carrying, namely, an upper frame 201 and a component mounted on the upper frame 202, a lower frame 202 and a component mounted on the lower frame 202, and the control box 710, and the three parts are assembled and mounted on the guide rail 100 when necessary. It is worth mentioning that the control box 710 may be integrated with various intelligent modules, including but not limited to a remote control module, a remote communication module, a positioning module, an altitude module, a runtime module, a base transceiver module, a lighting module, a camera module, and a voice module. Control handle 720's setting has reduced elevating gear's use threshold, and when operating personnel stood on microscope carrier 300, can hold control handle 720 naturally and carry out the lift operation, can control the lifting speed simultaneously, and its control mode is similar to driving electric scooter, easy operation, easy to go to hand. In order to facilitate the assembly and disassembly of the control box, a hanging hole 711 is formed in the rear side of the control box 710, a hook 730 is arranged on the mounting rack 200, and the control box 730 is suitable for entering and exiting the hanging hole 711 through the hook 730 and is detachably mounted on the mounting rack 200; the hook 730 is rotatably arranged on the mounting rack 200, a limiting hole 731 is formed in the rear end of the hook 730, and a limiting ball 732 is fixedly arranged on the mounting rack 200; the hook 730 is turned upwards to make the limiting ball 732 enter the limiting hole 731, and the hook 730 is in a state to be installed (as shown in fig. 11), when the control box 710 is installed on the hook 730, the hook 730 is turned downwards under the action of the weight of the control box 710 to make the limiting hole 731 separate from the limiting ball 732, and the rear side of the control box 710 is tightly attached to the mounting frame 200, so that the installation is completed (as shown in fig. 12). Through the structure, a single person can install the control box 710 on the installation frame 200, and the control box 710 is tightly attached to the installation frame 200 under the action of gravity after installation, so that the control box cannot shake easily, and the control box has the advantages of convenience and reliability. In addition, the side of the control box 710 is also provided with a handle 712, which is convenient for carrying and carrying.

The roller assembly: the roller assembly 800 includes a fixed roller 810 and a movable roller 820, the fixed roller 810 and the movable roller 820 are provided with a plurality of groups and are arranged on the mounting frame 200 at intervals along the vertical direction; the fixed roller 810 is rotatably disposed inside the mounting frame 200 and adapted to abut against the front side of the guide rail 100; the movable roller 820 is disposed outside the mounting frame 820 and adapted to abut against the rear side of the guide rail 100. The fixed rollers 810 and the movable rollers 820 are matched to realize horizontal limiting and vertical movement of the mounting rack 200 relative to the guide 100 rail; in a popular way, the roller assemblies 800 are arranged such that the mounting bracket 200 can "grab" the guide rail 100 without being separated from the guide rail 100, and can be lifted and lowered along the guide rail 100 by means of the roller assemblies 800. In this embodiment, two sets of movable rollers 820 are disposed on the upper bracket 201, two sets of fixed rollers 810 are disposed at corresponding positions, and one set of movable rollers 820 is disposed on the lower bracket 202. Compared with the prior products, the embodiment mainly adopts the creative optimization design of the movable roller 820, and the movable roller 820 replaces the original locking wheel assembly, specifically:

the movable roller 820 includes a rotating rod 821, a sliding block 822, a wheel body 823 and a locking member 824, the rotating rod 821 is rotatably disposed on the mounting frame 200 along the horizontal direction, the rear end of the sliding block 822 is slidably disposed on the rotating rod 821, the wheel body 823 is rotatably disposed at the front end of the sliding block 822, and the locking member 824 is movably disposed on the rotating rod 821 and is suitable for abutting against the sliding block 822 to limit the backward displacement of the sliding block 822. The working principle is as follows: the rotating rod 821 rotates outwards, the sliding block 822 slides backwards, and the movable roller 820 can be in an unlocking state; the rotating rod 821 rotates inward, the sliding block 822 slides forward, and the locking member 824 moves forward until the wheel 823 abuts against the rear side of the guide rail 100, so that the movable roller 820 is locked. In further optimized arrangement, a rotating groove 206 is formed in the inner side of the mounting frame 200, an abdicating groove 207 penetrating through the rotating groove 206 is further formed in the mounting frame 200, a rotating column 8211 is arranged at the front end of the rotating rod 821, the rotating rod 821 is suitable for penetrating through the abdicating groove 207, and the rotating column 8211 is suitable for being rotatably arranged in the rotating groove 206; a locking member 824 is threadably coupled to the rearward end of rotating rod 821, and an operating handle 8241 extends from locking member 824, and operating handle 8241 is adapted to rotate locking member 824. The structure of the sliding block 822 has a crucial influence on the safety and reliability of the movable roller 820, in this embodiment, the sliding block 822 includes a connection block 8221 and a mounting plate 8222, the rotating rod 821 is adapted to pass through the connection block 8221, an extension hole 8223 is further formed at the rear end of the connection block 8221, and the locking member 824 is adapted to enter the extension hole 8223 and abut against the sliding block 822; the wheel body 823 is suitable for being rotatably arranged on the mounting plate 8222, the mounting plate 8222 extends to the inner side to form a protective cover 8224, the wheel body 823 is wrapped by the protective cover 8224, an arc-shaped groove 8225 is formed in the front side of the protective cover 8224, and the guide rail 100 penetrates through the arc-shaped groove 8225 and abuts against the wheel body 823; the mounting bracket 200 is provided with a limiting groove 208 at the rear side, the mounting plate 8222 extends forwards to form a limiting lug 8226, and the limiting lug 8226 is suitable for entering the limiting groove 208 and limiting the movable roller 820 to rotate outwards. The extension hole 8223 is provided, so that the connection of the rotating rod 821, the sliding block 822 and the locking member 824 is tighter, and the rotating rod has higher strength and more stable structure in a locking state, and the derailment of the movable roller 820 is avoided; in addition, the opening of the extending hole 8223 can increase the threaded connection length of the locking piece 824 and the rotating rod 821 in a limited space, greatly reduce the possibility of loosening of the locking piece 824 and also improve the safety and reliability of the movable roller 820. The protective cover 8224 and the arc-shaped groove 8226 formed in the protective cover 8224 can reduce the gap between the sliding block 822 and the guide rail 100, and prevent foreign matters from entering between the wheel body 823 and the guide rail 100 to cause derailment. The matching arrangement of the limiting groove 208 and the limiting lug 8226 also further enhances the stability and reliability of the movable roller 820 in the locking state.

Anti-locking subassembly: since the control box 710 has a remote communication module, the lifting device can be remotely controlled to operate through the control box, and when the lifting device is remotely controlled, the descending speed of the lifting device is not necessarily controlled, so that the anti-lock assembly 900 is provided, and the brake slider 608 can be disabled. The anti-lock assembly 900 of the embodiment includes a lock pin 901 and a telescopic spring 902, a lock hole 6083 is formed on the brake slider 608, the lock pin 901 is in a J shape, the lock pin 901 is slidably disposed on the mounting bracket 200 along a horizontal direction, the lock pin 901 can rotate along the mounting bracket, and the telescopic spring 902 is disposed between the mounting bracket 200 and the lock pin 901 and forces the lock pin 901 to slide inward; when the brake slider 608 is not activated, the locking pin 901 can rotate to the locking hole 6083 and enter the locking hole 6083 by the elastic force of the extension spring 902, so as to limit the brake slider 608 from sliding. Of course, the mounting bracket 200 is preferably provided with a placement hole opposite to the locking hole 6083, so that the anti-lock assembly 900 can be fixed when not in use, and the normal operation of other components is prevented from being influenced by the rotation of the anti-lock assembly. As shown in fig. 13, the present embodiment provides two anti-lock assemblies 900, wherein the left anti-lock assembly 900 is in an operating state, and the right anti-lock assembly 900 is in a non-operating state.

A protection component: the same with the previous generation product, the protection component 110 of this embodiment includes two connecting seats 111, two round pin axles 112 and a U type guardrail 113, two connecting seats 111 are fixed to be set up on mounting bracket 200, and extend to both sides along the horizontal direction respectively, two round pin axles 112 set up on connecting seat 111 along vertical direction respectively, wherein at least one round pin axle 112 can be followed connecting seat 111 and separated, U type guardrail 113 both ends are provided with rotates cover 1131, two round pin axles 112 can pass two and rotate cover 1131, be fixed in on connecting seat 111U type guardrail 113, and U type guardrail 113 accessible rotates cover 1131 and sets up on round pin axle 112. In general, the height of the U-shaped guardrail 113 from the carrier 300 is set to be close to the waist height of a human body, and is generally selected to be between 80cm and 100cm, so that an operator can enter the carrier 300 from any side, and the applicability of the lifting device is improved; the design of the height of the U-shaped guardrail 113 can be replaced for protection.

Gear set: the gear set 120 is arranged between the power assembly 400 and the lifting assembly 500, the power assembly 400 drives the lifting assembly 500 to rotate through the gear set 120, the gear set 120 comprises a first gear 121, a second gear 122 and a third gear 123, the first gear 121 is fixedly arranged on a rotating shaft of the power assembly 400, the second gear 122 is rotatably arranged on the mounting frame 200, the third gear 123 is fixedly arranged on a connecting rotating shaft of the lifting assembly 500, the first gear 121 is meshed with the second gear 122, and the second gear 122 is meshed with the third gear 123; a conical tensioning sleeve 124 is arranged on a rotating shaft of the power assembly 400, and the first gear 121 is fixed on the conical tensioning sleeve 124 through a tensioning bolt 125. The gear set 120 has high transmission efficiency, stable structure and strong reliability; and the arrangement of the conical tensioning sleeve 124 can avoid installation deviation between gears, and improve the reliability of the gear set 120.

The traveling wheels: two walking wheels 130 are respectively arranged on two sides of the bottom of the mounting rack 200, and the four walking wheels 130 enable the lifting device to walk on the ground. The lifting device is greatly convenient to carry, power can be added to the walking wheels 130 if necessary, and the lifting device can be more convenient to run on the ground.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A lifting device is characterized in that: the device comprises a guide rail, a mounting frame, a carrying platform, a power assembly, a lifting assembly, a locking assembly, a control assembly and a roller assembly;

the guide rail is fixedly arranged along the vertical direction;

the power assembly is suitable for driving the lifting assembly to operate;

2. A lifting device as claimed in claim 1, characterized in that: a rotating groove is formed in the inner side of the mounting rack, an abdicating groove penetrating through the rotating groove is further formed in the mounting rack, a rotating column is arranged at the front end of the rotating rod and is suitable for penetrating through the abdicating groove, and the rotating column is suitable for being rotatably arranged in the rotating groove;

the locking piece is in threaded connection with the rear end of the rotating rod, an operating handle extends out of the locking piece, and the operating handle is suitable for rotating the locking piece.

3. A lifting device as claimed in claim 2, characterized in that: the sliding block comprises a connecting block and an installing plate, the rotating rod is suitable for penetrating through the connecting block, an extending hole is further formed in the rear end of the connecting block, and the locking piece is suitable for entering the extending hole and abutting against the sliding block;

the wheel body is suitable for being rotatably arranged on the mounting plate, the mounting plate extends inwards to form a protective cover, the protective cover wraps the wheel body, an arc-shaped groove is formed in the front side of the protective cover, and the guide rail penetrates through the arc-shaped groove and abuts against the wheel body;

the mounting bracket rear side is opened and is equipped with the spacing groove, the mounting panel extends spacing lug forward, spacing lug is suitable for getting into the spacing groove, and the restriction movable roller outwards rotates.

4. A lifting device as claimed in claim 1, characterized in that: the lower end of the mounting frame extends forwards to form two supporting plates, and the power assembly is arranged between the two supporting plates;

the carrying platform comprises a base frame, an extension platform and fasteners, wherein the base frame is fixedly arranged on the supporting plate, the extension platform is provided with two blocks which are arranged on the base frame in a sliding mode, the extension platform can slide towards the inner side or the outer side and is used for changing the usable area of the carrying platform, and the fasteners are arranged between the base frame and the fasteners and are used for limiting the extension platform to slide on the base frame.

5. A lifting device as claimed in claim 1, characterized in that: a hanging hole is formed in the rear side of the control box, a hook is arranged on the mounting frame, the control box is suitable for entering and exiting the hanging hole through the hook and is detachably mounted on the mounting frame;

the hook is rotatably arranged on the mounting frame, a limiting hole is formed in the rear end of the hook, and a limiting bead is fixedly arranged on the mounting frame; the couple upwards overturns and can make spacing pearl gets into spacing hole, and makes the couple is in and treats the installation condition, the control box install in when the couple is last, the couple can be under the effect of control box weight, overturn downwards, and make spacing hole breaks away from spacing pearl, just the mounting bracket is hugged closely to the control box rear side.

6. A lifting device as claimed in claim 1, characterized in that: the locking assembly comprises a rotating part, a transmission speed change part, a rotary disc, a centrifugal part and a brake part, wherein the rotating part is rotatably connected to the mounting frame, when the mounting frame moves on the guide rail, the rotating part acts on the guide rail to rotate, the rotary disc is rotatably connected to the mounting frame, the rotating part drives the rotary disc to rotate through the transmission speed change part, the centrifugal part is arranged on the rotary disc in a sliding mode, when the rotating speed of the rotary disc exceeds a set value, the centrifugal part can slide outwards under the action of centrifugal force to contact the brake part, so that the brake part acts, and the brake part acts on the guide rail to limit the movement of the mounting frame;

7. A lifting device as claimed in claim 6, characterized in that: the lock hook and the clamping column are both electric conductors, wires are electrically connected to the lock hook and the clamping column to form a switch structure, the switch structure is connected with the power assembly in series, and when the lock hook is separated from the clamping column, the power assembly is disconnected;

8. A lifting device as claimed in claim 6, characterized in that: the control box is provided with a remote communication module, and the lifting device can be remotely controlled to operate through the control box;

the lifting device further comprises an anti-locking assembly, the anti-locking assembly comprises a locking needle and an expansion spring, a locking hole is formed in the brake slider, the locking needle is J-shaped, the locking needle is arranged on the mounting frame in a sliding mode along the horizontal direction, the locking needle can rotate along the mounting frame, and the expansion spring is arranged between the mounting frame and the locking needle and forces the locking needle to slide inwards; when the brake sliding block is not touched, the locking pin can rotate to the locking hole and enters the locking hole through the elasticity of the telescopic spring to limit the sliding of the brake sliding block.

9. A lifting device as claimed in claim 6, characterized in that: the brake slider includes metal connecting block and plastics contact piece, the metal connecting block is suitable for sliding connection the mounting bracket, plastics contact piece is suitable for contradicting the guide rail.

10. A lifting device as claimed in claim 1, characterized in that: the lifting device further comprises a protection assembly, the protection assembly comprises two connecting seats, two pin shafts and a U-shaped guardrail, the two connecting seats are fixedly arranged on the mounting frame and respectively extend to two sides along the horizontal direction, the two pin shafts are respectively arranged on the connecting seats along the vertical direction, at least one pin shaft can be separated from the connecting seats, rotating sleeves are arranged at two ends of the U-shaped guardrail, the two pin shafts can penetrate through the two rotating sleeves to fix the U-shaped guardrail on the connecting seats, and the U-shaped guardrail can be rotatably arranged on the pin shafts through the rotating sleeves;