CN115009989A

CN115009989A - Movable material hoisting device

Info

Publication number: CN115009989A
Application number: CN202210946480.5A
Authority: CN
Inventors: 徐启朋; 胡炜; 张永武; 李昌军; 王丽娟; 吕旭; 武琼
Original assignee: XUZHOU JIUFA MACHINERY CO LTD
Current assignee: XUZHOU JIUFA MACHINERY CO LTD
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2022-09-06

Abstract

The invention relates to the technical field of hoisting devices, in particular to a movable material hoisting device which comprises a support frame, wherein four brake universal wheels which are convenient for the support frame to move are installed at the bottom end of the support frame, a cross rod is connected on the support frame in a sliding manner, a lifting structure capable of lifting the cross rod is arranged on the support frame, a breakage-preventing structure which prevents materials from falling to the ground from a high position and being damaged when the lifting structure is damaged is arranged on the cross rod, a driving structure for driving the lifting structure is arranged on the support frame, a protecting structure for protecting the driving structure is arranged on the support frame, an adjusting structure is arranged on the cross rod, a hook structure is arranged on the adjusting structure, and the position of the hook structure can be adjusted through the adjusting structure, so that the large-size materials can be hung and hoisted conveniently.

Description

Movable material hoisting device

Technical Field

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

Background

Traditional hoisting accessory couple is connected on the stay cord mostly, in the in-process of lifting by crane put the rise and fall of stay cord realization couple through the book, because the stay cord needs often roll-up, can produce wearing and tearing between this in-process stay cord, thereby its borne tension can descend along with the increase of live time, because of probably breaking when lifting by crane heavier material, thereby lead to the damage of material easily, and in-process lifting the material transport because the speed of operation is inhomogeneous consequently can lead to the material to take place great swing, thereby make the material collide the object and damage easily, and general hoisting accessory has only a couple mostly, consequently the material can take place the slope when lifting the material, drop easily and damage when the slope is comparatively serious, stability is low.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a movable material hoisting device.

The technical scheme adopted by the invention for solving the technical problems is as follows: a movable material hoisting device comprises a support frame, a cross rod is connected on the support frame in a sliding way, the cross bar is provided with a breaking-proof structure which comprises a connecting handle, the cross bar is connected with the connecting handle in a sliding way, the connecting handle is connected with the lifting structure through a first pull rope, two abutting blocks are fixedly connected to the connecting handle, the supporting block is abutted against the sliding rods, the sliding rods are provided with first grooves, a tension spring is fixedly connected between the two sliding rods, the sliding rod is connected with the cross rod in a sliding way, the supporting frame is connected with a plurality of sliding blocks in a sliding way, a buffer spring is fixedly connected between each sliding block and the supporting frame, the supporting frame is provided with a plurality of second grooves, the supporting frame is provided with a protective structure and a driving structure, the adjustable brake device is characterized in that an adjusting structure is arranged on the cross rod, a hook structure is arranged on the adjusting structure, and four brake universal wheels are installed at the bottom end of the support frame.

Specifically, one end of the sliding block extends to the inside of the second groove, the cross section of the first groove is of a trapezoidal structure, and the sliding rod penetrates through the connecting handle.

Specifically, the distance between two adjacent second grooves is equal, the length of the second groove is greater than the width of the sliding rod, and the two sliding rods are symmetrically distributed in the middle of the cross rod.

Concretely, elevation structure includes first backup pad, can dismantle through a plurality of bolts on the support frame and be connected with first backup pad, fixedly connected with supports the shell on the first backup pad, it is connected with the connecting axle to rotate on the support shell, fixedly connected with take-up pulley on the connecting axle, the winding has first stay cord on the take-up pulley, can dismantle through a plurality of bolts on the support frame and be connected with two second pulleys, connect the first pulley of last fixedly connected with, first stay cord has all been twined on first pulley and two second pulleys.

Specifically, the driving structure comprises a motor, the motor is detachably connected to the supporting shell through a plurality of bolts, a worm is connected to an output shaft of the motor through a coupler, the worm and a worm wheel are meshed, and the worm wheel is fixedly connected to the connecting shaft.

Specifically, install the controller on the support frame, electric connection between controller and the motor, electric connection between controller and the battery.

Specifically, protective structure includes the second backup pad, fixedly connected with second backup pad on the support frame, fixedly connected with protective housing in the second backup pad, the battery has been placed to the inside of protective housing, it is connected with the apron to rotate on the protective housing, be equipped with a plurality of logical grooves on the apron.

Specifically, adjust the structure and include the rack, fixedly connected with rack on the horizontal pole, sliding connection has the sliding sleeve on the horizontal pole, sliding connection has the latch on the sliding sleeve, the block between latch and the rack, fixedly connected with arm-tie on the latch, fixedly connected with reset spring between arm-tie and the horizontal pole.

Specifically, the hook structure includes the second stay cord, fixedly connected with second stay cord on the sliding sleeve, the tip fixedly connected with connecting block of second stay cord, the last rotation of connecting block is connected with the couple.

Specifically, the hook is connected with a rotating shaft in a rotating mode, the rotating shaft is fixedly connected with a stop lever, one end of the stop lever is abutted to the hook, and a torsion spring is fixedly connected between the rotating shaft and the hook.

The invention has the beneficial effects that:

(1) according to the mobile material lifting device, the cross rod is connected to the support frame in a sliding mode, the cross rod is provided with the breakage preventing structure, the lifting of the cross rod can be controlled through the lifting structure, and when the lifting structure is damaged due to the fact that materials are too heavy in the material lifting process, objects are prevented from falling onto the ground from a high position and being damaged through the breakage preventing structure, so that the use safety is improved; when the cross rod needs to be lifted, the connecting shaft is rotated to drive the winding wheel to rotate, the winding wheel rotates to realize winding of the first pull rope, the first pull rope can drive the cross rod to move towards the top end of the supporting frame in the winding process, so that the material can be lifted, the motion guide effect on the first pull rope can be realized through the two second pulleys, the torque force required for rotating the winding wheel can be reduced through the arrangement of the first pulley, so that the labor-saving effect is realized, when the first pull rope is suddenly broken in the lifting process of the material, the mutual acting force between the connecting handle and the cross rod is lost, the tension spring can extend to drive the slide rod to move towards the supporting frame, when the slide rod moves to the second groove along with the cross rod, the end part of the slide rod can be positioned inside the second groove under the action of the tension spring and can be abutted against the slide block, and at the moment, the buffer spring contracts, thereby play the effect of buffering, and the slider can support the slide bar and keep off, thereby make the horizontal pole can not continue the whereabouts, thereby avoided the material to fall subaerially and take place to damage, and make the top motion of horizontal pole towards the support frame through rotating the coiling wheel after having changed new first stay cord, connect this moment can drive two and support the piece and move towards first recess, support the piece can conflict the slide bar and deviate from in the support frame motion under the effect of horizontal pole gravity when supporting between piece and the slide bar, break away from until with between the second recess, alright normal use hoisting accessory lifts by crane the transport to the material this moment.

(2) According to the mobile material lifting device, the lifting structure can be driven by arranging the driving structure, and the driving structure can be protected by the protection structure, so that the damage of the driving structure is effectively avoided, namely; the motor is started through the controller when the connecting shaft needs to be rotated, power can be supplied to the motor through the storage battery, the motor drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel rotates to drive the connecting shaft to rotate, the effect of saving power is achieved through worm and gear transmission, self-locking can be achieved, a certain protection effect is achieved for the motor, the protection effect on the storage battery can be achieved through the inner portion, where the storage battery is placed, of the protection box, the protection box can be sealed through the cover plate after the storage battery is placed into the protection box, wires can be worn out from the through grooves, and therefore the protection effect is improved.

(3) According to the mobile material lifting device, materials to be lifted can be hooked through the hooking structures, the materials can be prevented from slipping off the hooking structures, the stability is improved, the positions of the two hooking structures can be adjusted according to the volume of the lifted materials through the adjusting structures, the flexibility is good, and therefore when the materials with larger volume need to be lifted, two ends of the materials can be lifted through the two hooks at the same time, the inclination of the materials in the lifting process of a single hook is effectively avoided, and the stability in lifting is improved, namely; when a single object with small volume needs to be lifted, the material can be lifted through one hook, when the hook is hooked on the material, the material can be effectively prevented from slipping from the hook through the stop lever, so that the stability is improved, the stop lever can always keep a state of conflict with the hook through the torsion spring, the direction of lifting the material can be adjusted through rotation between the connecting block and the hook, the flexibility is good, when an object with large volume needs to be lifted, the pull plate is pulled to deviate from the cross rod, the pull plate drives the latch to deviate from the rack to move, the reset spring extends, when the latch is not clamped with the rack, the position of the sliding sleeve on the cross rod can be adjusted, when the position is adjusted, the pull plate is loosened, at the moment, the latch can move towards the rack and is clamped with the rack under the action of the reset spring, at the moment, the sliding sleeve can be prevented from sliding on the cross rod through clamping between the latch and the rack, thereby realize fixed after the sliding sleeve position control, the regulation to another sliding sleeve position is realized to the repeated above-mentioned operation, alright lift by crane the material through two couples after the position control of two sliding sleeves is accomplished, thereby the effectual condition that the material takes place the slope when having avoided single couple to lift by crane the material, the stability that the material lifted by crane has been improved, and the material is because the length of second stay cord is shorter after lifting by crane, and the horizontal pole only can slide from top to bottom on the support frame, consequently can reduce the material and take place the swing at the in-process of transport, stability is good.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural diagram of an overall structure of a preferred embodiment of a mobile material lifting device provided in the present invention;

FIG. 2 is an enlarged view of the part A shown in FIG. 1;

FIG. 3 is an enlarged view of the structure of the portion B shown in FIG. 1;

FIG. 4 is an enlarged view of the structure of the portion C shown in FIG. 1;

FIG. 5 is a schematic view of the connection structure of the cross bar and the slide bar of the present invention;

FIG. 6 is an enlarged view of the structure of the portion D shown in FIG. 5;

FIG. 7 is an enlarged view of the structure of the section E shown in FIG. 5;

FIG. 8 is a schematic view of the connection structure of the sliding sleeve and the cross bar according to the present invention;

FIG. 9 is an enlarged view of the structure of the portion F shown in FIG. 8;

FIG. 10 is a schematic view of the connection structure of the worm wheel and the worm according to the present invention;

fig. 11 is a schematic view of a connection structure of the rotating shaft and the torsion spring according to the present invention.

In the figure: 1. a support frame; 2. a cross bar; 3. a break-preventing structure; 301. a connecting handle; 302. a resisting block; 303. a slide bar; 304. a tension spring; 305. a first groove; 306. a slider; 307. a buffer spring; 308. a second groove; 4. a lifting structure; 401. a first pulley; 402. a second pulley; 403. a first pull cord; 404. a winding wheel; 405. a connecting shaft; 406. a support housing; 407. a first support plate; 5. a drive structure; 501. a motor; 502. a worm; 503. a worm gear; 504. a controller; 505. a storage battery; 6. a protective structure; 601. a second support plate; 602. a protective box; 603. a cover plate; 604. a through groove; 7. an adjustment structure; 701. a rack; 702. a sliding sleeve; 703. pulling a plate; 704. clamping teeth; 705. a return spring; 8. a hook structure; 801. a second draw cord; 802. connecting blocks; 803. hooking; 804. a rotating shaft; 805. a stop lever; 806. a torsion spring; 9. and (5) braking the universal wheel.

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 described with the specific embodiments.

As shown in fig. 1 to 11, the mobile material lifting device according to the present invention includes a support frame 1, a cross bar 2 is slidably connected to the support frame 1, a breakage-preventing structure 3 is disposed on the cross bar 2, the breakage-preventing structure 3 includes a connecting handle 301, the connecting handle 301 is slidably connected to the cross bar 2, the connecting handle 301 is connected to a lifting structure 4 through a first pull rope 403, two abutting blocks 302 are fixedly connected to the connecting handle 301, the abutting blocks 302 abut against the slide bars 303, a first groove 305 is disposed on the slide bars 303, a tension spring 304 is fixedly connected between the two slide bars 303, the slide bars 303 are slidably connected to the cross bar 2, a plurality of sliding blocks 306 are slidably connected to the support frame 1, a buffer spring 307 is fixedly connected between the sliding blocks 306 and the support frame 1, a plurality of second grooves 308 are disposed on the support frame 1, a protective structure 6 and a driving structure 5 are disposed on the support frame 1, the lifting structure 4 comprises a first supporting plate 407, the supporting frame 1 is detachably connected with the first supporting plate 407 through a plurality of bolts, the first supporting plate 407 is fixedly connected with a supporting shell 406, the supporting shell 406 is rotatably connected with a connecting shaft 405, the connecting shaft 405 is fixedly connected with a winding wheel 404, the winding wheel 404 is wound with a first pull rope 403, two second pulleys 402 can be dismantled through a plurality of bolts and be connected to on the support frame 1, connect 301 on the first pulley 401 of fixedly connected with, all twine on first pulley 401 and two second pulleys 402 and have first stay cord 403, promptly: the connecting shaft 405 drives the winding wheel 404 to rotate when rotating, the winding wheel 404 rotates to realize winding of the first pull rope 403, the first pull rope 403 can drive the cross rod 2 to move towards the top end of the support frame 1 in the winding process, so as to realize lifting of materials, the motion guiding effect of the first pull rope 403 can be realized through the two second pulleys 402, the torque force required for rotating the winding wheel 404 can be reduced through the arrangement of the first pulley 401, so that the labor-saving effect is realized, when the first pull rope 403 is suddenly broken in the lifting process of the materials, the mutual acting force between the connecting handle 301 and the cross rod 2 is lost, at the moment, the tension spring 304 can extend to drive the slide rod 303 to move towards the support frame 1, when the slide rod 303 moves to the second groove 308 along with the cross rod 2, the end part of the slide rod 303 can be positioned inside the second groove 308 under the action of the tension spring 304 and can be abutted against the slide block 306, buffer spring 307 is contracted this moment, thereby play the effect of buffering, and slider 306 can support slide bar 303, thereby make slide bar 303 can not continue the whereabouts, thereby avoided the material to fall subaerially and take place to damage, and make horizontal pole 2 towards the top motion of support frame 1 through rotating take-up pulley 404 after having changed new first stay cord 403, connect this moment can drive two to support piece 302 and move towards first recess 305 to 301, support piece 302 can conflict slide bar 303 and deviate from the motion of support frame 1 under the effect of horizontal pole 2 gravity when contradicting between piece 302 and the slide bar 303, break away from between and the second recess 308, alright normal use hoisting accessory lifts by crane the transport to the material this moment.

Specifically, drive structure 5 includes motor 501, it is connected with motor 501 to dismantle through a plurality of bolts on the support shell 406, there is worm 502 through the coupling joint on motor 501's the output shaft, mesh between worm 502 and the worm wheel 503, worm wheel 503 fixed connection is in connecting axle 405, install controller 504 on the support frame 1, electric connection between controller 504 and the motor 501, electric connection between controller 504 and the battery 505, protective structure 6 includes second backup pad 601, fixedly connected with second backup pad 601 on the support frame 1, fixedly connected with guard box 602 on the second backup pad 601, battery 505 has been placed to the inside of guard box 602, the last rotation of guard box 602 is connected with apron 603, be equipped with a plurality of logical grooves 604 on the apron 603, promptly: starting motor 501 through controller 504, can supply power for motor 501 through battery 505, motor 501 drives worm 502 and rotates, worm 502 drive worm wheel 503 rotates, worm wheel 503 rotates and drives connecting axle 405 and rotate, worm 502 transmission has the effect of economizing on labour through worm wheel 503, and can realize the auto-lock, certain guard action has been played to motor 501, and can play the guard action to battery 505 through the inside of placing protection box 602 with battery 505, can seal protection box 602 through apron 603 after battery 505 is put into protection box 602, the electric wire can be worn out from logical groove 604, thereby the effect of protection has been improved.

Specifically, adjust structure 7 and include rack 701, fixedly connected with rack 701 on the horizontal pole 2, sliding connection has sliding sleeve 702 on the horizontal pole 2, sliding connection has latch 704 on the sliding sleeve 702, the block between latch 704 and the rack 701, fixedly connected with arm-tie 703 on the latch 704, fixedly connected with reset spring 705 between arm-tie 703 and the horizontal pole 2, hook structure 8 includes second stay cord 801, fixedly connected with second stay cord 801 on the sliding sleeve 702, the tip fixedly connected with connecting block 802 of second stay cord 801, the last rotating connection of connecting block 802 has couple 803, the last rotating connection of couple 803 has pivot 804, fixedly connected with pin 805 on the pivot 804, the one end of pin 805 is contradicted in the couple 803, fixedly connected with torsion spring 806 between pivot 804 and the couple 803, promptly: when a single object with a small volume needs to be lifted, the material can be lifted through one hook 803, when the hook 803 is hooked on the material, the material can be effectively prevented from slipping off the hook 803 through the stop rod 805, so that the stability is improved, the stop rod 805 can be kept in a state of abutting against the hook 803 all the time through the torsion spring 806, and the direction of lifting the material for the hook 803 can be adjusted through rotation between the connecting block 802 and the hook 803, so that the flexibility is good, when an object with a large volume needs to be lifted, the pull plate 703 is pulled away from the cross rod 2, the pull plate 703 drives the latch 704 to move away from the rack 701, the return spring 705 extends, when the latch 704 is not clamped with the rack 701, the position of the sliding sleeve 702 on the cross rod 2 can be adjusted, when the pull plate 703 is loosened after the position adjustment is completed, at the moment, the latch 704 can move towards the rack 701 and be clamped with the rack 701 under the action of the return spring 705, can avoid the sliding sleeve 702 to slide on horizontal pole 2 through the block between latch 704 and the rack 701 this moment, thereby realize the fixed after the sliding sleeve 702 position control, repeat the regulation of above-mentioned operation realization to another sliding sleeve 702 position, alright lift by crane the material through two couples 803 after the position control of two sliding sleeves 702 is accomplished, thereby the effectual condition that has avoided single couple 803 to lift by crane the material emergence slope, the stability that the material lifted by crane has been improved, and the material lifts by crane the back because the length of second stay cord 801 is shorter, and horizontal pole 2 can only slide from top to bottom on support frame 1, consequently can reduce the material and take place the swing at the in-process of transport, stability is good.

When the lifting device is used, firstly, the support frame 1 is pushed, the four brake universal wheels 9 roll on the ground, so that the movement of the device is convenient, the support frame 1 is effectively prevented from moving by braking the brake universal wheels 9 after moving to a specified position, further, when a single object with small volume needs to be lifted, the material can be lifted by one hook 803, when the hook 803 is hooked on the material, the material can be effectively prevented from slipping off the hook 803 by the stop lever 805, so that the stability is improved, the stop lever 805 can always keep a collision state with the hook 803 by the torsion spring 806, the direction of the hook 803 for lifting the material can be adjusted by rotating between the connecting block 802 and the hook 803, the flexibility is good, when an object with large volume needs to be lifted, the pull plate 703 is pulled against the cross rod 2, the pull plate 703 drives the latch 704 to move against the rack 701, the reset spring 705 extends, when the latch 704 is not clamped with the rack 701, the position of the sliding sleeve 702 on the cross rod 2 can be adjusted, when the position is adjusted, the pulling plate 703 is released, at the moment, the latch 704 moves towards the rack 701 and is clamped with the rack 701 under the action of the reset spring 705, at the moment, the sliding sleeve 702 can be prevented from sliding on the cross rod 2 through the clamping between the latch 704 and the rack 701, so that the sliding sleeve 702 can be fixed after the position is adjusted, the adjustment of the position of the other sliding sleeve 702 can be realized by repeating the above operations, when the position adjustment of the two sliding sleeves 702 is completed, the material can be lifted through the two hooks 803, so that the condition that the material is inclined when the single hook 803 lifts the material is effectively avoided, the material lifting stability is improved, and the material can only slide up and down on the support frame 1 due to the shorter length of the second pulling rope 801 after lifting, therefore, the swinging of materials in the carrying process can be reduced, the stability is good, the motor 501 is started through the controller 504, the storage battery 505 can supply power to the motor 501, the motor 501 drives the worm 502 to rotate, the worm 502 drives the worm wheel 503 to rotate, the worm wheel 503 rotates to drive the connecting shaft 405 to rotate, the worm wheel 503 and the worm 502 drive through the worm wheel 503 have the effect of saving power and can realize self-locking, a certain protection effect on the motor 501 is achieved, the storage battery 505 can be placed in the protection box 602 to play a protection effect on the storage battery 505, the protection box 602 can be sealed through the cover plate 603 after the storage battery 505 is placed in the protection box 602, wires can penetrate out of the through groove 604, the protection effect is improved, the connection shaft 405 rotates to drive the winding wheel 404 to rotate, the winding wheel 404 rotates to roll the first pull rope 403, the first pull rope 403 can drive the cross rod 2 to move towards the top end of the support frame 1 in the winding process, thereby realizing the hoisting of the material, and the motion guiding effect of the first pulling rope 403 can be played through the two second pulleys 402, the torque force required for rotating the winding wheel 404 can be reduced through the arrangement of the first pulley 401, thereby playing a role of saving labor, when the first pulling rope 403 is suddenly broken in the hoisting process of the material, the connecting handle 301 and the cross bar 2 lose mutual acting force, at the moment, the tension spring 304 can extend to drive the sliding rod 303 to move towards the support frame 1, when the sliding rod 303 moves to the second groove 308 along with the cross bar 2, the end part of the sliding rod 303 is positioned inside the second groove 308 under the action of the tension spring 304 and can be abutted against the sliding block 306, at the moment, the buffer spring 307 contracts, thereby playing a buffering role, and the sliding block 306 can abut against the sliding rod 303, thereby the sliding rod 303 can not continuously fall down, thereby avoiding the material falling on the ground and being damaged, and after a new first pull rope 403 is replaced, the cross rod 2 moves towards the top end of the support frame 1 by rotating the winding wheel 404, at the moment, the connecting handle 301 can drive the two abutting blocks 302 to move towards the first groove 305, when the abutting blocks 302 and the slide rod 303 abut against each other, the abutting blocks 302 abut against the slide rod 303 under the action of gravity of the cross rod 2 to move away from the support frame 1 until the abutting blocks are separated from the second groove 308, and at the moment, the lifting device can be normally used for lifting and carrying materials.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a portable material hoisting accessory, its characterized in that, includes support frame (1), sliding connection has horizontal pole (2) on support frame (1), be equipped with on horizontal pole (2) and prevent disconnected structure (3), prevent disconnected structure (3) including connecting (301), sliding connection has on horizontal pole (2) connects (301), connect (301) and link to each other with elevation structure (4) through first stay cord (403), connect fixedly connected with two on (301) and support piece (302), support piece (302) and contradict in slide bar (303), be equipped with first recess (305) on slide bar (303), two fixedly connected with tension spring (304) between slide bar (303), slide bar (303) sliding connection is in horizontal pole (2), sliding connection has a plurality of slider (306) on support frame (1), fixedly connected with buffer spring (307) between slider (306) and support frame (1), be equipped with a plurality of second recesses (308) on support frame (1), be equipped with protective structure (6) and be equipped with drive structure (5) on support frame (1), be equipped with on horizontal pole (2) and adjust structure (7), be equipped with hook structure (8) on adjusting structure (7), four brake universal wheels (9) are installed to the bottom of support frame (1).

2. A mobile material lifting device according to claim 1, wherein: one end of the sliding block (306) extends into the second groove (308), the section of the first groove (305) is in a trapezoidal structure, and the sliding rod (303) penetrates through the connecting handle (301).

3. A mobile material lifting device according to claim 2, wherein: the distance between two adjacent second grooves (308) is equal, the length of the second grooves (308) is larger than the width of the sliding rods (303), and the two sliding rods (303) are symmetrically distributed relative to the middle of the cross rod (2).

4. A mobile material lifting device according to claim 3, wherein: lifting structure (4) include first backup pad (407), can dismantle through a plurality of bolts on support frame (1) and be connected with first backup pad (407), fixedly connected with supports shell (406) on first backup pad (407), it is connected with connecting axle (405) to rotate on supporting shell (406), fixedly connected with winding wheel (404) on connecting axle (405), first stay cord (403) winding is in on winding wheel (404), can dismantle through a plurality of bolts on support frame (1) and be connected with two second pulley (402), connect first pulley (401) of fixedly connected with on (301), first pulley (401) and two second pulley (402) are gone up and all are twined first stay cord (403).

5. A mobile material lifting device according to claim 4, wherein: drive structure (5) include motor (501), can dismantle through a plurality of bolts on support shell (406) and be connected with motor (501), there is worm (502) through the coupling joint on the output shaft of motor (501), mesh between worm (502) and worm wheel (503), worm wheel (503) fixed connection is in connecting axle (405).

6. A mobile material lifting apparatus according to claim 5, wherein: the supporting frame (1) is provided with a controller (504), the controller (504) is electrically connected with the motor (501), and the controller (504) is electrically connected with the storage battery (505).

7. A mobile material lifting device according to claim 6, wherein: protective structure (6) include second backup pad (601), fixedly connected with second backup pad (601) is gone up in support frame (1), fixedly connected with protective housing (602) is gone up in second backup pad (601), battery (505) have been placed to the inside of protective housing (602), it is connected with apron (603) to rotate on protective housing (602), be equipped with a plurality of logical grooves (604) on apron (603).

8. A mobile material lifting device according to claim 7, wherein: adjust structure (7) and include rack (701), fixedly connected with rack (701) on horizontal pole (2), sliding connection has sliding sleeve (702) on horizontal pole (2), sliding connection has latch (704) on sliding sleeve (702), the block between latch (704) and rack (701), fixedly connected with arm-tie (703) is gone up in latch (704), fixedly connected with reset spring (705) between arm-tie (703) and horizontal pole (2).

9. A mobile material lifting device according to claim 8, wherein: the hook structure (8) comprises a second pull rope (801), the sliding sleeve (702) is fixedly connected with the second pull rope (801), the end part of the second pull rope (801) is fixedly connected with a connecting block (802), and the connecting block (802) is rotatably connected with a hook (803).

10. A mobile material lifting device according to claim 9, wherein: the hook (803) is rotatably connected with a rotating shaft (804), the rotating shaft (804) is fixedly connected with a stop lever (805), one end of the stop lever (805) abuts against the hook (803), and a torsion spring (806) is fixedly connected between the rotating shaft (804) and the hook (803).