CN112249991A

CN112249991A - Portable electric lifter

Info

Publication number: CN112249991A
Application number: CN202011167697.3A
Authority: CN
Inventors: 林建波; 殷海波; 徐波; 洪赢政; 周凯; 张俊
Original assignee: Pinghu Chengshi Robot Co ltd; Shanghai Fire Research Institute of MEM
Current assignee: Pinghu Chengshi Robot Co ltd; Shanghai Fire Research Institute of MEM
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-01-22

Abstract

The invention discloses a portable electric lifter, which comprises a shell, a motor driving component, a control component, a power supply component, a rope grabbing device, a lifting rope binding component, a cross rope binding component and a cover plate component, wherein the motor driving component and the power supply component are arranged in the shell; the driving end of the motor driving assembly extends out of the shell to be connected with the rope grabbing device in a driving mode, and the lifting rope binding assembly is arranged on the shell relative to the rope grabbing device and distributed on one side of the rope grabbing device along the first direction; the transverse rope crossing assembly is arranged on the shell relative to the rope grabbing device and distributed on two sides of the rope grabbing device along the second direction; the cover plate assembly is arranged on the shell relative to the lifting binding rope assembly and provides a heavy object connecting structure; the control assembly is arranged on the shell and is connected with the motor driving assembly and the power supply assembly in a control mode. The electric lifter provided by the invention has a compact integral structure, is convenient to carry and operate, can realize electric lifting operation, and can effectively solve the problems in the prior art.

Description

Portable electric lifter

Technical Field

The invention relates to a lifting control technology, in particular to a portable electric lifter.

Background

The situation that people or things ascend and descend is often met in a plurality of situations such as fire fighting, rescue, outdoor climbing, building engineering and the like.

The conventional operation schemes are manual operation based on a mechanical structure or electric auxiliary lifting operation based on large-scale equipment.

Wherein, manual operation based on simple mechanical structure, complex operation to need the professional through professional training to operate, implement inefficiency simultaneously.

And carry out electronic supplementary lift operation based on large-scale equipment, though efficient, whole equipment is complicated, and the portability is poor, can't realize using anytime and anywhere, and the practicality is poor.

Therefore, the problem that needs to be solved in the field is to provide a portable electric auxiliary lifting device which is simple and convenient to operate, safe and reliable.

Disclosure of Invention

Aiming at the problems of the existing lifting scheme in the aspect of portability, the invention aims to provide a portable electric lifter which is simple and convenient to operate, safe and reliable, and can solve the problems in the prior art.

In order to achieve the above object, the present invention provides a portable electric lifter, comprising a housing, a motor driving assembly, a control assembly, a power supply assembly, a rope grabber, a lifting rope restraining assembly, a cross rope restraining assembly, and a cover plate assembly, wherein the motor driving assembly and the power supply assembly are disposed in the housing, and the power supply assembly supplies power to the motor driving assembly; the driving end of the motor driving assembly extends out of the shell to be connected with the rope grabbing device in a driving mode, the lifting rope binding assembly is arranged on the shell relative to the rope grabbing device, is distributed on one side of the rope grabbing device along the first direction, and is matched with the rope grabbing device to form a lifting rope binding channel; the transverse rope-tying component is arranged on the shell relative to the rope grabbing device, distributed on two sides of the rope grabbing device along the second direction and matched with the rope grabbing device to form a transverse rope-tying channel; the cover plate assembly is arranged on the shell relative to the lifting binding rope assembly and provides a heavy object connecting structure; the control assembly is arranged on the shell and is connected with the motor driving assembly and the power supply assembly in a control mode.

Further, the motor driving assembly comprises a speed reducer, a direct current motor and an electromagnetic brake, and the direct current motor is connected with the speed reducer and the electromagnetic brake respectively.

Further, the rope grabbing device comprises an inner rope disc and an outer rope disc, the inner rope disc and the outer rope disc are oppositely connected, and a rope channel is formed between the inner rope disc and the outer rope disc; the opposite surfaces of the inner rope disc and the outer rope disc are respectively provided with similar rectangular boss structures which are staggered with each other.

Furthermore, the lifting restraining rope assembly comprises a first lifting restraining rope unit and a second lifting restraining rope unit which are oppositely arranged, the first lifting restraining rope unit comprises a first lifting base, a first lifting support and a first lifting rope guide wheel, the first lifting rope guide wheel is rotatably arranged on the first lifting base, and the first lifting support is arranged on the first lifting base and is matched with the first lifting rope guide wheel to form a limiting structure for restraining the position of a rope;

the second lifting rope binding unit comprises a second lifting base, a second lifting support and a second lifting rope guide wheel, the second lifting rope guide wheel is rotatably arranged on the second lifting base, and the second lifting support is arranged on the second lifting base and is matched with the second lifting rope guide wheel to form a limiting structure for limiting the position of a rope.

Further, the electric lifter further comprises a rope guide block, and the rope guide block is arranged between the lifting rope binding assembly and the rope grabbing device.

Furthermore, the rope guide block is trapezoidal, and the side surface of the rope guide block is arc-shaped.

Further, the crossing binding rope assembly comprises a crossing base, a crossing support and a crossing rope guide wheel, wherein the crossing rope guide wheel is rotatably arranged on the crossing base, and the crossing support is arranged on the crossing base and is matched with the crossing rope guide wheel to form a limiting structure for limiting the position of the rope.

Further, the control assembly comprises a power switch and a control handle assembly, and the power switch controls the connection power assembly; the control handle assembly is in control connection with the motor driving assembly to form stepless speed regulation control on the motor driving assembly.

Further, the control assembly also comprises an emergency stop control component.

Furthermore, the power supply assembly is detachably connected with the shell through a buckle type locking mechanism.

The electric lifter provided by the invention has a compact integral structure, is convenient to carry and operate, can realize electric lifting operation, and can effectively solve the problems in the prior art.

The electric lifter provided by the invention has stable and reliable integral structure, has various protective measures, guarantees the safety and reliability of operation, effectively realizes the control of ascending and descending of people and objects, and can be applied to numerous situations such as fire fighting, rescue, outdoor climbing, building engineering and the like.

Drawings

The invention is further described below in conjunction with the appended drawings and the detailed description.

Fig. 1 is an exploded view of the motorized lift in this example;

FIG. 2 is a view showing an exemplary structure of the electric lifter according to the present embodiment;

FIG. 3 is a schematic structural view of the rope grab in this example;

FIG. 4 is a schematic structural view of the inner rope reel of the rope grab in the present example;

FIG. 5 is a schematic structural view of an outer rope reel of the rope grab in the present example;

fig. 6 is a schematic view of the construction of the rope guide pulley in this example;

fig. 7 is a schematic structural view of a rope guide block in this example;

FIG. 8 is a schematic structural view of the cover plate in this example;

FIG. 9 is a view showing an example of the structure of the electric lifter after the completion of the cross-over fitting of the rope in this example;

fig. 10 is a view showing an example of the structure of the motorized lifter after completion of rope loading.

Fig. 11 is a schematic diagram of the closing of the cover plate for hoisting the heavy object by the electric lifter in the embodiment.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

Referring to fig. 1 and 2, there are shown exemplary configurations of the portable electric lifter in this example.

As can be seen, the portable motorized lift 100 mainly includes a housing 110, a motor driving assembly 120, a control assembly 130, a power supply assembly 140, a rope grabber 150, a lift tether assembly 160, a cross tether assembly 170, a cover assembly 180, and a cable guide 190.

The shell 110 forms a main space structure of the whole lifter, so as to be used for bearing other components; a motor driving assembly 120 is installed at the housing 110 to provide power required for the operation of the entire electric lift, and a driving end of the motor driving assembly 120 is protruded from the housing 110; the power supply assembly 140 is disposed in the housing 110 and electrically connected to the motor driving assembly 120, so as to provide a stable and reliable working power supply for the motor driving assembly 120 during operation; the rope grab 150 is disposed at the driving end of the motor driving assembly 120, and is used for placing and driving the rope to move, and the rope grab 150 can rotate under the driving of the motor driving assembly 120 to drive the rope on the rope grab to transmit.

The lifting tether assembly 160 is disposed on the housing opposite the tether grabber 150, is distributed along a first direction on one side of the tether grabber 150, and cooperates with the tether grabber 150 to form a lifting tether passage. Here, the first direction refers to a direction in which the electric lifter performs a lifting operation, such as an up-down direction of the orientation shown in fig. 2; meanwhile, the lifting tether assembly 160 is distributed at an upper portion of the tether grabber 150 in the first direction.

The rope guide block 190 is provided on the housing with respect to the rope grab 150 to guide the movement state of the rope placed in the rope grab 150, ensuring reliability.

The crossing tether assembly 170 is disposed on the housing opposite to the tether grabber 150, symmetrically distributed on both sides of the tether grabber 150 along the second direction, and forms a crossing tether passage in cooperation with the tether grabber 150. Here, the second direction refers to a direction in which the electric lifter performs a cross operation, such as a left-right direction of the orientation shown in fig. 2; meanwhile, the crossing tether assemblies 170 are symmetrically disposed at left and right sides of the tether grabber 150 in the second direction.

The cover plate assembly 180 is disposed on the housing opposite the lift tether assembly, providing a structure for connecting weights; meanwhile, the cover plate assembly 180 can cover the rope grab 150, the lifting and lowering rope fastening assembly 160 and the crossing rope fastening assembly 170, so that the moving reliability of the rope is improved, and the injury to personnel is avoided.

The control assembly 130 is provided on the housing and controls the connection of the motor drive assembly 120 and the power supply assembly 140 to control the operation state and working state of the entire lifter.

According to this design, specific embodiments are given below.

The housing 110 in this embodiment is preferably a square structure, and includes

side plates

111, 112 on both sides, a top plate 113 on the upper part, a bottom plate 114 on the lower part, and

fixing plates

115, 116 at the front and rear ends; the combination and connection among the side plates, the top plate, the bottom plate and the fixing plate can be determined according to actual requirements, and is not limited herein.

By way of example, the side plates, the top plate, the bottom plate and the fixing plate can be made of extruded profiles, the material is preferably aluminum alloy, and the dustproof and waterproof grade of the shell can reach IP 65.

Further, the front fixing plate 115 and the rear fixing plate 116 in this example are of a generally square plate-shaped structure, and the front fixing plate 115 serves as a working surface on which a lifting tether assembly, a cross tether assembly, a rope guide block, and the like are integrated. In a specific implementation, the front fixing plate 115 and the rear fixing plate 116 are made of corresponding aluminum alloy, and a waist hole is respectively formed above the front fixing plate and the rear fixing plate for facilitating the installation of the rope.

The power supply module 140 in this scheme adopts a plug-and-socket locking quick-change battery structure, and is connected with the casing 110 through corresponding plug-and-socket locking mechanisms in a quick-detachable manner, so that the battery can achieve the effects of quick disassembly and quick assembly. In a specific configuration, the power module 140 may directly form a part of the bottom plate 114 of the housing, and a corresponding buckle is integrated inside the housing, so that the power module 140 may be quickly and conveniently inserted into the housing through the buckle-type locking mechanism thereon, and integrally form a part of the bottom plate of the housing, such as to make the power module beautiful and improve the dustproof and waterproof grade of the entire housing. The structure of the power module 140 and the structure of the snap-in locking mechanism may be determined according to actual requirements, and are not limited herein.

The motor driving assembly 120 in this embodiment is mainly formed by matching a speed reducer 121, a dc brushless motor 122, and an electromagnetic brake 123, wherein the dc brushless motor 122 is connected with the speed reducer 121 to form a power output structure, and an output end of the dc brushless motor extends out of a front fixing plate 115 of the housing to connect with the rope grabber 150. The electromagnetic brake 123 is provided at the dc brushless motor 122 to form a safety control of the dc brushless motor 122.

The motor drive unit 120 thus constructed is integrally and fixedly disposed in the housing and is electrically connected to the power supply unit 140.

The rope grabbing device 150 in the scheme is integrally arranged at the driving end of the motor driving component 120, so that the rope is controlled, and the rope cannot slide in the process of lifting, descending and crossing the hoisted objects.

As shown in fig. 3, the rope grab 150 in this example is a disk structure, and mainly includes an inner rope disk 151 and an outer rope disk 152 that are oppositely connected and matched, and a corresponding rope channel is formed between the inner rope disk 151 and the outer rope disk 152; meanwhile, quasi-rectangular boss structures facing the rope way are respectively arranged on the inner rope disc 151 and the outer rope disc 152 along the circumferential direction of the inner rope disc 151 and the outer rope disc 152, and the quasi-rectangular boss structures on the inner rope disc 151 and the outer rope disc 152 are distributed in a staggered mode. Therefore, the similar rectangular boss structures which are staggered mutually are arranged on the inner rope disk and the outer rope disk of the rope grabbing device, and the relative motion between the rope and the rope disks can be realized by utilizing the friction force between the rope and the inner rope disk and the outer rope disk.

Specifically, as shown in fig. 4, in the present example, the rope grabbing device 150 is provided with a plurality of first type rectangular bosses 154 on an outer ring portion of the first contact surface 153 of the inner rope reel 151, and the plurality of first type rectangular bosses 154 are uniformly distributed along the outer ring portion of the first contact surface 153 of the inner rope reel 151, so as to form a corresponding inner rope grabbing mechanism.

As shown in fig. 5, in the rope grab 150 of the present embodiment, a plurality of second type rectangular bosses 156 are disposed on an outer ring portion of the second contact surface 155 of the outer rope reel 152, and the plurality of second type rectangular bosses 156 are uniformly distributed along the outer ring portion of the second contact surface 155 of the outer rope reel 152 and are mutually matched with the plurality of first type rectangular bosses 154 on the inner rope reel 151, so as to form a corresponding rope grab mechanism for the outer rope reel.

Thus, when the inner rope reel 151 and the outer rope reel 152 are combined in a butt joint mode to form the rope grabbing device 150, the first rectangular bosses 154 on the inner rope reel 151 and the second rectangular bosses 156 on the outer rope reel 152 are arranged in a staggered mode, so that ropes are arranged in a continuous S-shaped mode in the middle of the staggered bosses, and the friction force between the ropes and the rope reels can be increased due to the structural arrangement.

Furthermore, the central line angles of the first type of rectangular bosses 154 on the rope grabbing mechanism of the inner rope disc and the second type of rectangular bosses 156 on the rope grabbing mechanism of the outer rope disc are set to be 12-24 degrees, and the arrangement of the structure is the best point of mutual restriction balance between the friction between the rope and the rope disc and the separation between the rope and the rope disc.

When the rope grabbing device 150 is used specifically, a rope is arranged between the inner rope disc and the outer rope disc on the rope grabbing device 150, and when the rope grabbing device 150 rotates under the driving of the motor driving component 120, the rope can be driven to move by using the friction force between the rope and the inner rope disc and the outer rope disc.

The lifting cable-restraining assembly 160 in this embodiment is integrally disposed on the front fixing plate 115 of the housing and is located directly above the cable grabber 150.

The present lift tether assembly 160 forms two cable guide stop mechanisms with respect to the tether grabber 150 to cooperate with the tether grabber 150 to form corresponding lift tether passages.

As shown, the present lift tether assembly 160 includes a first lift tether unit 161 and a second lift tether unit 162 that are disposed opposite to each other.

First lift tether unit 161 includes a first lift base 163, a first lift bracket 164, and a first lift cord guide 165. The first lifting base 163 is integrally disposed on the front fixing plate 115 and located above the rope grab 150; a first lifting bracket 164 is seated on the first lifting base 163 to constitute a first lifting rope guide wheel 165 seating area; a first lift cord guide wheel 165 is rotatably disposed between the first lift base 163 and the first lift bracket 164, where a leading side of the first lift cord guide wheel 165 corresponds to a side cord groove of the cord grab 150; while the first lift cord guide pulley 165 cooperates with the first lift bracket 164 to form a limit structure that constrains the position of the cord. The rope thus passed around the rope grab 150 can enter the first lift rope guide pulley 165, the direction of travel of the rope is guided by the first lift rope guide pulley 165, and the position of the rope is constrained by the cooperation of the first lift rope guide pulley 165 and the first lift bracket 164 to prevent the rope from falling out of the rope grab during operation of the machine.

As shown in fig. 6, the first lift cable guide pulley 165 is preferably formed by a corresponding cable guide pulley fitted around the exterior of the deep groove ball bearing and mounted on the first lift base 163, followed by the first lift bracket 164, such that the cable guide pulley and bracket cooperate to constrain the position of the cable and prevent the cable from falling out of the rope grab during operation of the machine.

Moreover, the second lifting restraining unit 162 of the lifting restraining assembly 160 has the same structure as the first lifting restraining unit 161, which will be described in detail herein.

The second lifting restricting unit 162 and the first lifting restricting unit 161 thus configured are symmetrically disposed. A lift cord passage is formed by the cooperation of the first lift cord guide pulley of the first lift cord restraint unit 161, the second lift cord guide pulley of the second lift cord restraint unit 162, and the cord grabber 150.

When the two units are specifically arranged, the same base structure can be adopted, namely, one base is shared, so that the structure is more compact.

The crossing cable assembly 170 in this embodiment is integrally disposed on the front fixing plate 115 of the housing and symmetrically disposed on the left and right sides of the cable grabber 150. Namely, a transverse bridle module 170 is symmetrically arranged at the left and right sides of the rope grab 150.

The cross tie assembly 170 includes three portions, a cross base 171, a cross bracket 172, and a cross cord guide wheel 173. Here, the cross base 171 is integrally provided on the front fixing plate 115 and located at the left/right side of the rope grab 150; a crossing bracket 172 is mounted on the crossing base 171 to form a crossing rope guide wheel 173 mounting area; the crossing rope guide wheel 173 is rotatably arranged in a mounting area between the crossing base 171 and the crossing bracket 172, and the guide side surface of the crossing rope guide wheel 173 corresponds to the rope groove on the side surface of the rope grab 150; meanwhile, the crossing cable guide wheel 173 and the crossing bracket 172 cooperate to form a limiting structure for restricting the cable position. The rope passing around the rope grab 150 can enter the cross rope guide wheel 173, the cross rope guide wheel 173 guides the moving direction of the rope, and meanwhile, the cross rope guide wheel 173 and the cross bracket 172 are matched to jointly restrain the position of the rope, so that the rope is prevented from being separated from the rope grab in the running process of the machine.

As shown in fig. 6, the present cross cable guide wheel 173 is preferably formed by a corresponding cable guide wheel fitted around the exterior of the deep groove ball bearing and mounted on the cross base 171, followed by a cross bracket 172, such that the cable guide wheel and bracket cooperate to constrain the position of the cable and prevent the cable from falling out of the rope grab during operation of the machine.

As such, the present example forms a cross bridle passage by the cross bridle guide wheels in the cross bridle assemblies 170 distributed on the left and right sides of the rope grab cooperating with the rope grab.

On the basis, the rope guide block 190 is further integrally arranged on the front fixing plate 115 of the shell to guide the rope passing through the rope grab. The cable guide blocks 190 are preferably disposed between the rope grab 150 and the lift tether assembly 160, such as to effectively prevent the lift from jamming during raising and lowering, causing the cable to become entangled in the rope grab.

As shown in fig. 7, the rope guide block 190 in this example is composed of a mounting base 191 and a guide block 192 integrated on the mounting base. The mounting base 191 is used for being fixedly mounted with the front fixing plate 115, the guide block 192 on the mounting base is preferably of a trapezoidal trapezoid block structure in cross section, and the contact positions of the rope guide block 190 and the rope are designed to be arc-shaped, for example, four end corners are arc-shaped, so that the abrasion of the rope is reduced. The rope guide block 190 arranged in this way can effectively prevent the lifter from clamping a rope in the ascending and descending processes, so that the rope is wound on the rope grabbing device.

The cover plate assembly 180 in this example is mainly composed of a cover plate 181 and a cover plate holder 182, wherein the cover plate holder 182 is integrally mounted on the fixing plate for seating the cover plate 181.

The cover plate bracket 182 is integrally distributed at the lower part of the rope grab 150, and mainly comprises a U-shaped seat 183 and a connecting shaft 184 arranged on the U-shaped seat.

As shown in fig. 8, in cooperation therewith, the cover plate 181 in this example corresponds in its entirety to the structure of the housing front fixing plate 115, and is capable of covering the front fixing plate 115 and the respective components integrally mounted thereon.

The bottom end 185 of the cover 181 serves as a connection end, and is provided with a shaft hole 186 that is engaged with the connection shaft 184 of the cover bracket 182, and a weight connection rod 187 is provided on the bottom end 185 of the cover 181.

After the cover plate 181 is connected to the connecting shaft 184 of the cover plate bracket 182 through the shaft hole at the bottom end, the cover plate 181 can be rotatably mounted on the cover plate bracket 182 around the connecting shaft 184, and then the cover plate 181 can swing around the connecting shaft 184 relative to the front fixing plate 115. When the heavy object is connected to the cover plate 181, the cover plate is closed under the action of the gravity of the heavy object to cover the rope grabbing device 150, so that the rope grabbing device can protect the personnel.

The control assembly 130 in this example is mainly formed by a control handle assembly 131, an emergency stop button 132, a power switch 133 and an LCD display panel 134.

The control handle assembly 131 is arranged on the side plate 111 of the shell and controls the motor driving assembly 120 connected with the shell, so that stepless speed regulation can be realized by manually rotating the control handle, and the ascending and descending speed of the machine can be controlled. The specific structure of the control handle assembly 131 may be determined according to practical requirements, and is not limited herein.

The power switch 133 is disposed on the side plate 111 of the housing and controls the power supply assembly 140 in the housing, thereby realizing the on and off control of the whole device.

The emergency stop button 132 is disposed on the side plate 111 of the housing and controls the power supply assembly 140 and/or the motor driving assembly 120 connected to the housing, so as to control the elevator to stop working in an emergency situation, thereby protecting the robot and the human.

The LCD panel 134 is disposed on the side panel 111 of the housing and displays various operation data of the motorized lifter.

When the portable electric lifter is applied, the crossing and lifting operation can be realized.

As shown in fig. 9, when the portable electric lifter performs a crossing operation, the rope 200 is sequentially clamped in the left crossing restraining assembly 170, the rope grabber 150, and the right crossing restraining assembly 170, and then the electric lifter is completed to load the rope.

After the rope is loaded, the heavy object is locked and hung at the connecting shaft of the cover plate hook, and the cover plate automatically buckles the rope grabbing device under the action of gravity.

As shown in fig. 11, a weight is connected with the D-shaped lock 300 and locked at the position of the hook connecting shaft at the bottom of the cover plate 181, and the cover plate 181 can buckle the rope grab under the driving of the self weight of the weight.

At this time, the power switch 133 is turned on, the host machine is controlled, the control handle 131 is rotated to control the rotation speed of the rope grabbing device 150, and the direct-current brushless motor in the shell drives the rope grabbing device to rotate; through the relative motion between the rope grabbing device and the rope, the whole movable lifter is driven to drive the heavy object to move transversely along the rope 200.

As shown in fig. 10, when the portable electric lifter is lifted, the rope is sequentially caught by the first left lifting/lowering rope fastening unit 161, the rope grabber 150, and the second right lifting/lowering rope fastening unit 162, and the electric lifter is completely fastened.

At this time, the power switch 133 is turned on, the host machine is controlled, the control handle 131 is rotated to control the rotation speed of the rope grabbing device 150, and the direct-current brushless motor in the shell drives the rope grabbing device to rotate; through the relative motion between the rope grabbing device and the rope, the whole movable lifter is driven to drive the heavy object to move up and down along the rope 200.

In the use process of the electric lifter, the running speed, the load, the accumulated mileage, the temperature of a motor battery and the alarm historical record of the battery power can be checked on the LCD display panel.

In the manual mode, when the lifter is lifted, the speed control handle is released, the handle can automatically recover to the zero position, and the lifter is stopped.

In actual operation, a remote control operation module can be added, so that in a remote control mode, when the elevator is lifted, the operation button is not pressed any more, and the elevator is stopped.

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 described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present 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. The portable electric lifter is characterized by comprising a shell, a motor driving assembly, a control assembly, a power supply assembly, a rope grabbing device, a lifting rope binding assembly, a cross rope binding assembly and a cover plate assembly, wherein the motor driving assembly and the power supply assembly are arranged in the shell, and the power supply assembly supplies power to the motor driving assembly; the driving end of the motor driving assembly extends out of the shell to be connected with the rope grabbing device in a driving mode, the lifting rope binding assembly is arranged on the shell relative to the rope grabbing device, is distributed on one side of the rope grabbing device along the first direction, and is matched with the rope grabbing device to form a lifting rope binding channel; the transverse rope-tying component is arranged on the shell relative to the rope grabbing device, distributed on two sides of the rope grabbing device along the second direction and matched with the rope grabbing device to form a transverse rope-tying channel; the cover plate assembly is arranged on the shell relative to the lifting binding rope assembly and provides a heavy object connecting structure; the control assembly is arranged on the shell and is connected with the motor driving assembly and the power supply assembly in a control mode.

2. The portable motorized riser of claim 1, wherein the motor drive assembly includes a speed reducer, a dc motor, and an electromagnetic brake, the dc motor being connected to the speed reducer and the electromagnetic brake, respectively.

3. The portable motorized lift of claim 1, wherein the rope grab comprises an inner rope reel and an outer rope reel, the inner and outer rope reels being connected in opposition with a rope path therebetween; the opposite surfaces of the inner rope disc and the outer rope disc are respectively provided with similar rectangular boss structures which are staggered with each other.

4. The portable motorized lift of claim 1, wherein the lift tether assembly comprises a first lift tether unit and a second lift tether unit disposed opposite one another, the first lift tether unit comprising a first lift base, a first lift bracket and a first lift cord guide wheel, the first lift cord guide wheel rotatably disposed on the first lift base, the first lift bracket disposed on the first lift base and cooperating with the first lift cord guide wheel to form a position limiting structure that constrains a position of the cord;

5. The portable motorized lift of claim 1, further comprising a cord guide block disposed between the lift tether assembly and the cord grabber.

6. The portable electric hoist according to claim 5, wherein the rope guide block has a trapezoidal shape, and a portion of the rope guide block that can be contacted with the rope is formed in a circular arc shape.

7. The portable power-operated riser of claim 1, wherein the cross tether assembly includes a cross base, a cross support rotatably mounted to the cross base, and a cross cord guide wheel mounted to the cross base and cooperating with the cross cord guide wheel to form a stop structure for restraining the location of the cord.

8. The portable power-operated riser of claim 1, wherein the control assembly includes a power switch and a control handle assembly, the power switch controlling the connection power assembly; the control handle assembly is in control connection with the motor driving assembly to form stepless speed regulation control on the motor driving assembly.

9. The portable power-operated riser of claim 8, wherein the control assembly further comprises a scram control component.

10. The portable power-operated riser of claim 1, wherein the power assembly is removably connected to the housing by a snap-in locking mechanism.