CN218620100U - Lifting device - Google Patents

Abstract

The utility model discloses a lifting device, include: the lifting frame comprises a frame body, a fixed seat, a first guide tensioning mechanism and a second guide tensioning mechanism, wherein the fixed seat is arranged at the lower end of the frame body; the lifting tray is used for placing materials to be lifted; the main driving mechanism is used for driving the lifting tray to move up and down, and comprises a driving motor, a transmission part and a first lifting wire body, the driving motor is arranged on the fixed seat, the output end of the driving motor is connected with the transmission part to drive the transmission part to rotate, one end of the first lifting wire body is wound on the transmission part, and the other end of the first lifting wire body is connected with the lifting tray; the auxiliary driving mechanism comprises a counterweight and a second lifting wire body, one end of the second lifting wire body is connected with the counterweight, and the other end of the second lifting wire body is connected with the lifting tray. According to the utility model discloses jacking equipment, through locating the lower extreme of support body with driving motor, convenient inspection maintenance, and the security is higher.

Description

Lifting device

Technical Field

The utility model belongs to the technical field of the jacking equipment technique and specifically relates to a jacking equipment is related to.

Background

Lifting equipment among the correlation technique, in order to keep lifting equipment self stability of operation at the lift in-process, need hang some fixed connection with the steel construction at lifting equipment and factory building top, like this for lifting equipment only is applicable to the factory building that has steel construction to hang some, and lifting equipment hangs some fixed connection with the steel construction at factory building top, makes the dismantlement move more troublesome. Moreover, the installation position of the driving mechanism for driving the lifting tray is not reasonable, and when the driving mechanism fails, workers need to climb to the top of the lifting device by other tools, such as a ladder and the like, to check and repair the driving mechanism, so that the maintenance is inconvenient and unsafe. Therefore, improvements are needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a lifting device, through locating driving motor on the fixing base of the lower extreme of support body, when driving motor breaks down, make things convenient for the workman to inspect and maintain, for the lifting device of correlation technique, the utility model discloses a lifting device is convenient to be maintained, the security is higher and quick detachable moves.

According to the utility model discloses lifting equipment, include: the lifting frame comprises a frame body, a fixed seat, a first guide tensioning mechanism and a second guide tensioning mechanism, wherein the fixed seat is arranged at the lower end of the frame body, and the first guide tensioning mechanism and the second guide tensioning mechanism are arranged at the upper end of the frame body; the lifting tray is used for placing materials to be lifted, and the lifting tray is arranged on the front side of the lifting frame in a manner of moving up and down; the main driving mechanism is used for driving the lifting tray to move up and down, and comprises a driving motor, a transmission part and a first lifting wire body, the driving motor is arranged on the fixed seat, the output end of the driving motor is connected with the transmission part to drive the transmission part to rotate, the transmission part is positioned at the rear end of the frame body, one end of the first lifting wire body is wound on the transmission part along the rotation direction of the transmission part, and the other end of the first lifting wire body is wound on the first guiding and tensioning mechanism and is connected with the lifting tray; and the auxiliary driving mechanism comprises a counterweight and a second lifting wire body, the counterweight is positioned at the rear end of the frame body, one end of the second lifting wire body is connected with the counterweight, and the other end of the second lifting wire body bypasses the second guide tensioning mechanism and is connected with the lifting tray.

According to the utility model discloses lifting equipment, on the fixing base through locating the lower extreme of support body with driving motor, when driving motor broke down, made things convenient for the workman to inspect the maintenance, for the lifting equipment of correlation technique, the utility model discloses lifting equipment convenient maintenance, and the security is higher. In addition, set up the counterweight and link to each other with the lift tray and help reducing the driving motor consumption, also can avoid the unexpected fracture of first pulling wire body lift tray free fall to drop, help alleviateing the impact load that lifting means received, help the stability of lifting means operation to for correlation technique, the lifting means of this application is quick detachable to be removed.

According to some embodiments of the utility model, first two that carry the pull line body and set up for controlling the interval.

According to some optional embodiments of the utility model, the second is drawn the line body and is two that the interval set up about for, two on the left and right sides direction the second is drawn the line body and is located two between the first line body of drawing.

According to some embodiments of the present invention, the driving member includes a driving shaft and a wire spool disposed on the driving shaft, one end of the first pulling wire body is wound on the wire spool along a rotation direction of the driving member, the fixing base is further provided with a wire spool, and the wire spool is rotatably disposed on the wire spool; the first pulling line body is two arranged at left and right intervals, the transmission part comprises two wire reels, the two wire reels are respectively arranged at left and right ends of the transmission shaft, the two wire reels are arranged at left and right sides, each wire reel is rotatably arranged on the corresponding wire reel, the output end of the driving motor is connected with the middle part of the transmission shaft, and one end of each first pulling line body is wound on the corresponding wire reel along the rotation direction of the transmission part.

According to some embodiments of the invention, the first guiding and tensioning mechanism comprises: the first guide frame, the first guide wheels and the first limiting rollers are rotatably arranged on the first guide frame, the first guide wheels are arranged at intervals in the front-back direction, the first wire lifting body bypasses the first guide wheels, and the first limiting rollers are positioned between every two adjacent first guide wheels and above the first wire lifting body; and/or, the second guiding and tensioning mechanism comprises: the second guide frame, the second leading wheel and the spacing roller of second all rotationally locate the second guide frame, the second leading wheel is a plurality of along the fore-and-aft direction interval setting, the second is carried the line body and is walked around a plurality ofly the second leading wheel, the spacing roller of second is located adjacent two between the second leading wheel and be located the second is carried the top of the line body.

According to the utility model discloses a some embodiments, the left and right sides of counterweight all is equipped with first guide roller, the support body is equipped with the first guide rail that extends along upper and lower direction, two, every that first guide rail set up for controlling the interval first guide roller is suitable for along corresponding first guide rail is along the up-and-down motion, just first guide roller with correspond first guide rail rolling contact.

According to the utility model discloses a some optional embodiments, first guide rail has two spigot surfaces that are the contained angle setting, every the spigot surface extends along upper and lower direction, the left and right sides of counterweight all is equipped with two first guide roller, two first guide roller respectively with corresponding two of first guide rail spigot surface rolling contact.

According to some embodiments of the invention, the weight of the weight member is less than the weight of the empty lifting tray.

According to some embodiments of the invention, the weight comprises a plurality of superposed weight plates, a plurality of the weight plates are detachably connected.

According to some embodiments of the invention, the lifting tray comprises: a tray body; the material trolley comprises a tray body, a guide assembly, wherein the guide assembly is used for guiding the material trolley to walk to the tray body and comprises two second guide rails and at least one group of guide supporting table groups, the two second guide rails are arranged at intervals in the left-right direction and extend in the front-back direction, the guide supporting table groups are arranged between the two second guide rails and comprise a plurality of guide supporting tables arranged in the front-back direction, each guide supporting table is provided with a second guide roller and a third guide roller which are arranged at intervals in the left-right direction, each guide supporting table is provided with a guide groove between the second guide roller and the third guide roller, wheels of the material trolley are suitable for walking along the second guide rails, the bottom surface of the material trolley is provided with a third guide rail, and the third guide rail is contained in the guide grooves and is suitable for being in rolling contact with the second guide rollers and the third guide rollers.

According to some embodiments of the invention, the lifting tray comprises: a tray body; the locking assembly is used for locking the material trolley on the tray body and comprises a first locking assembly and a second locking assembly; the first locking component comprises a first locking piece and a first locking driving mechanism, the first locking driving mechanism is connected with the first locking piece to drive the first locking piece to move between a first locking position and a first unlocking position, the first locking piece is matched with the material trolley in the front-back direction and limits the material trolley to move forwards in the first locking position, the first locking piece and the pallet body limit the material trolley in the front-back direction, and the first locking piece is disengaged from the material trolley in the front-back direction in the first unlocking position so that the material trolley can move forwards; the second locking assembly comprises a second locking piece and a second locking driving mechanism, the second locking driving mechanism is connected with the second locking piece to drive the second locking piece to move between a second locking position and a second unlocking position, the second locking piece is matched with the material trolley in the vertical direction at the second locking position and limits the material trolley to move upwards, the second locking piece and the tray body limit the material trolley in the vertical direction together, and the second locking piece is disengaged from the material trolley in the vertical direction at the second unlocking position so that the material trolley can move upwards.

According to some optional embodiments of the utility model, the tray body is equipped with the buffer block material dolly passes through the locking subassembly locking when on the tray body, material dolly's back lateral wall butt in the buffer block, the buffer block with first locking piece sets up relatively in the front rear direction.

According to the utility model discloses a some embodiments, the jacking equipment includes: the leveling assembly is arranged on the bottom surface of the frame body and comprises a plurality of leveling feet arranged at intervals in the circumferential direction of the frame body, and the height of each leveling foot is adjusted to level the frame body.

According to the utility model discloses a some embodiments, the jacking equipment still includes: the buffer support assembly is arranged on the ground and located in front of the lifting frame, the buffer support assembly comprises a plurality of buffer supporting feet arranged at intervals, and the lifting tray is suitable for supporting the plurality of buffer supporting feet when located at the lowest position.

According to some embodiments of the invention, the lifting device further comprises: at least a set of location structure group, the location structure group locate the support body just is used for right the lift tray location, every group location structure group includes at least one locating component, is every group location structure group includes a plurality of during locating component, it is a plurality of locating component arranges along left and right direction interval location component when the location structure group is the multiunit, the multiunit location structure group arranges along upper and lower direction interval, every locating component includes: a first position sensor; the positioning mechanism comprises a driving piece and a positioning piece, the driving piece is connected with the positioning piece to drive the positioning piece to move, the lifting tray is provided with a positioning hole, and the positioning piece is suitable for being detachably matched with the positioning hole; the first position sensor is electrically connected with the driving piece and the driving motor, when the first position sensor detects that the lifting tray moves to a set position, the lifting tray stops moving, the driving piece drives the positioning piece to stretch into the positioning hole, and the lifting tray is positioned at the set position.

According to some optional embodiments of the present invention, the lifting device further comprises: spacing subassembly of overtravel, spacing subassembly of overtravel is located support body and all locating component's top, spacing subassembly of overtravel includes: the second position sensor is electrically connected with the driving motor, and when the second position sensor detects that the lifting tray moves upwards to an upper limit position, the lifting tray stops moving; the locating part, the locating part is elastic buffer spare, the locating part is used for right the lift tray is spacing in ascending direction.

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

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a perspective view of a lifting device according to some embodiments of the present invention, showing an assembly structure of a lifting tray and a material trolley;

FIG. 2 is a schematic structural view of the lifting apparatus of FIG. 1, wherein the lifting tray is in an un-raised state;

FIG. 3 is a schematic structural view of the lifting device of FIG. 1 with the lifting tray in a raised condition;

FIG. 4 is an enlarged view at E in FIG. 3;

figure 5 is a schematic structural view of the crane in figure 3;

FIG. 6 is an enlarged view at A in FIG. 5;

fig. 7 is a schematic structural view of a primary drive mechanism and a secondary drive mechanism according to some embodiments of the present invention;

FIG. 8 is an enlarged view at B in FIG. 7;

FIG. 9 is an enlarged view at C in FIG. 7;

FIG. 10 is a schematic view of the structure of the tray of FIG. 2;

fig. 11 is an enlarged view at D in fig. 10.

Reference numerals:

100. a lifting device;

1. a lifting frame; 10. a frame body; 101. a first bracket; 102. a second bracket; 103. a fourth guide rail; 104. a fifth guide rail; 105; a first guide rail; 106. a guide surface; 11. a fixed seat; 111. a bobbin; 12. a first guiding and tensioning mechanism; 121. a first guide frame; 122. a first guide wheel; 123. a first limit roller; 13. a second guiding and tensioning mechanism; 131. a second guide frame; 132. a second guide wheel; 133. a second limit roller; 14. a drag chain; 15. a box body;

2. lifting the tray; 20. a tray body; 201. a buffer block; 202. positioning holes; 21. a guide assembly; 211. a second guide rail; 212. a guide support table set; 213. a guide support platform; 214. a second guide roller; 215. a third guide roller; 216. a guide groove; 22. a locking assembly; 23. a first locking component; 231. a first locking member; 232. a first lock drive mechanism; 24. a second locking assembly; 241. a second locking member; 242. a second lock drive mechanism; 25. a material trolley; 251. a wheel; 252. a third guide rail;

3. a main drive mechanism; 31. a drive motor; 32. a transmission member; 33. a drive shaft; 34. a wire spool; 35. a first puller wire body; 36. a first connecting plate;

4. an auxiliary drive mechanism; 41. a counterweight; 42. a first guide roller; 43. a second pull wire body; 44. a second connecting plate; 45. a counterweight plate;

5. positioning the structure group; 50. a positioning assembly; 51. a first position sensor; 52. a positioning mechanism; 521. a drive member; 522. a positioning member; 53. a valve island;

6. an overtravel limiting component; 61. a second position sensor; 62. a limiting member;

7. a buffer support assembly; 71. buffering the supporting legs;

8. a lifting guide device; 81. a fourth guide roller; 82. a fifth guide roller;

9. a leveling assembly; 91. leveling feet; 92. a first support plate; 93. a second support plate.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

The following describes the lifting apparatus 100 according to an embodiment of the present invention with reference to the drawings.

Referring to fig. 1 to 11, a lifting device 100 according to an embodiment of the present invention includes: the device comprises a lifting frame 1, a lifting tray 2, a main driving mechanism 3 and an auxiliary driving mechanism 4. The lifting frame 1 comprises a frame body 10, a fixed seat 11, a first guiding tensioning mechanism 12 and a second guiding tensioning mechanism 13, the fixed seat 11 is arranged at the lower end of the frame body 10, the first guiding tensioning mechanism 12 and the second guiding tensioning mechanism 13 are arranged at the upper end of the frame body 10, for example, the fixed seat 11 and the frame body 10 can be connected in a welding mode, the first guiding tensioning mechanism 12 and the second guiding tensioning mechanism 13 are fixed at the upper end of the frame body 10 through fasteners, a box body 15 is arranged on the outer side of the first guiding tensioning mechanism and the outer side of the second guiding tensioning mechanism and used for protecting the first guiding tensioning mechanism and the second guiding tensioning mechanism, dust accumulation is prevented, and the service life of the first guiding tensioning mechanism 12 and the service life of the second guiding tensioning mechanism 13 are guaranteed.

Referring to fig. 1 and 7, the lifting tray 2 is used to place the material to be lifted, for example, the material may be placed on a material cart 25, and the material cart 25 may be placed on the lifting tray 2. The lifting tray 2 is arranged on the front side of the lifting frame 1, the lifting tray 2 can move up and down, and materials can be driven to move up and down in the process that the lifting tray 2 moves up and down. Main actuating mechanism 3 is used for driving lift tray 2 to reciprocate, and main actuating mechanism 3 includes driving motor 31, driving medium 32 and the first body 35 of drawing a string of carrying, and fixing base 11 is located to driving motor 31, and when driving motor 31 broke down, the workman need not climb the top of jacking equipment 100 and inspect the maintenance, for the jacking equipment 100 convenient maintenance of correlation technique, and the security is higher.

Referring to fig. 7 and 9, the output end of the driving motor 31 is connected to the transmission member 32, and the driving motor 31 can drive the transmission member 32 to rotate. The transmission part 32 is located the rear end of support body 10, and the one end of first body 35 of pulling up is around locating transmission part 32 along the direction of rotation of transmission part 32, and the other end of first body 35 of pulling up is walked around first direction straining device 12 and is linked to each other with lift tray 2. When the driving motor 31 drives the driving member 32 to rotate, the first pulling wire body 35 is wound around one end of the driving member 32 to be wound into the driving member 32, one end of the first pulling wire body 35 connected with the lifting tray 2 is lifted, so that the lifting tray 2 is driven to ascend, and when the driving motor 31 drives the driving member 32 to rotate towards the other direction, the lifting tray 2 can descend, wherein the first guiding and tensioning mechanism 12 plays a guiding role in guiding the movement of the first pulling wire body 35. The main driving mechanism 3 has a simple structure, is convenient to operate and is convenient to disassemble and move away.

Referring to fig. 7 and 9, the auxiliary driving mechanism 4 includes a weight 41 and a second pull wire body 43, the weight 41 is located at the rear end of the frame body 10, one end of the second pull wire body 43 is connected to the weight 41, and the other end of the second pull wire body 43 bypasses the second guide tensioning mechanism 13 and is connected to the lifting tray 2. Can reduce the eccentric moment of lift tray 2 through setting up counterweight 41, help the stability of the whole operation of jacking equipment 100, when driving motor 31 drive driving medium 32 rotates in order to drive lift tray 2 to go up, counterweight 41 also can provide the pulling force to lift tray 2, supplementary main actuating mechanism 3 drives lift tray 2 and rises, helps reducing driving motor 31 consumption like this. On the other hand, the counterweight 41 is connected with the lifting tray 2, so that the lifting tray 2 and the material falling body can be prevented from falling off when the first lifting wire body 35 is broken accidentally, and the impact load on the lifting equipment 100 can be reduced. For the jacking equipment 100 of the correlation technique, the embodiment of the utility model provides a jacking equipment 100 security is higher, and the cost is lower.

According to some embodiments of the utility model, the weight of weight 41 is less than the weight of vacant lift tray 2, when reducing driving motor 31's consumption, can guarantee that lift tray 2 can slowly descend, can reduce the impact load of lift tray 2 to guarantee that vacant lift tray 2 can normally fall to safe position, for example, lift tray 2 can fall to on the buffering supporting component 7 on ground.

Referring to fig. 8, according to some embodiments of the present invention, the weight member 41 includes a plurality (e.g., four) of weight plates 45 stacked, and the plurality of weight plates 45 may be detachably connected, and the number of weight plates 45 may be increased or decreased as appropriate according to the weight of the lifting tray 2.

According to the utility model discloses lifting device 100, on the fixing base 11 through locating the lower extreme of support body 10 with driving motor 31, when driving motor 31 breaks down, make things convenient for the workman to inspect and maintain, for the lifting device 100 of correlation technique, the utility model discloses lifting device 100 convenient maintenance, and the security is higher. In addition, the arrangement of the weight 41 and the connection with the lifting tray 2 helps to reduce the power consumption of the driving motor 31, and also helps to prevent the lifting tray 2 from falling freely when the first pulling wire body 35 is accidentally broken, thereby helping to reduce the impact load on the lifting device 100 and the stability of the operation of the lifting device 100, and compared with the related art, the lifting device 100 of the present application is easy to detach and move.

Referring to fig. 7, according to some embodiments of the present invention, the first pulling wire body 35 is two that are arranged at left and right intervals, so as to ensure the stability of the lifting tray 2 during operation. Through setting up two first pull-up line bodies 35, can avoid the too big equipment of damage of impact load of the quick whereabouts of lifting tray 2 that one of them first pull-up line body 35 fracture leads to.

Referring to fig. 7, according to some optional embodiments of the present invention, the second lifting wire body 43 is two arranged at left and right intervals, so as to further ensure the stability of the lifting tray 2 during operation. Through setting up two second and carry the pulling wire body 43, when one of them second is carried the pulling wire body 43 fracture, the single second is carried the pulling wire body 43 and still can be connected counterweight 41 and lift tray 2, can avoid taking place the circumstances that the too big and damaged equipment of counterweight 41 whereabouts and impact load, does not also influence counterweight 41 and provides the pulling force for lift tray 2, helps reducing driving motor 31 consumption, in addition, also can guarantee that lift tray 2 descends slowly when lift tray 2 whereabouts. In the left-right direction, the two second pull-up wire bodies 43 are located between the two first pull-up wire bodies 35, so that the structure is simple, and the first pull-up wire bodies 35 and the second pull-up wire bodies 43 can be prevented from being wound in a staggered manner.

Referring to fig. 7 and 9, according to some embodiments of the present invention, the transmission member 32 includes a transmission shaft 33 and a wire spool 34, the wire spool 34 is disposed on the transmission shaft 33, one end of the first pulling wire body 35 is wound on the wire spool 34 along a rotation direction of the transmission member 32, the fixing base 11 is further provided with a wire spool 111, the wire spool 34 is rotatably disposed on the wire spool 111, for example, the wire spool 111 is mounted on the fixing base 11 by a fastener. The output end of the driving motor 31 can be connected with the transmission shaft 33, the driving motor 31 can drive the transmission shaft 33 to rotate, and the transmission shaft 33 can drive the wire spool 34 to rotate, so that the first wire lifting body 35 can be retracted in the wire spool 34, and the lifting tray 2 can move up and down.

Referring to fig. 3 and 7, optionally, the number of the first pull wire bodies 35 is two, the first pull wire bodies 35 are arranged at intervals on the left and right sides, the transmission member 32 includes two wire reels 34, the two wire reels 34 are respectively disposed at the left and right ends of the transmission shaft 33, the wire reels 111 are arranged at intervals on the left and right sides, each wire reel 34 is rotatably disposed on the corresponding wire reel 111, the output end of the driving motor 31 is connected to the middle portion of the transmission shaft 33, so that the left and right stresses at the two ends of the transmission shaft 33 are uniform, and it is ensured that the transmission shaft 33 can drive the wire reels 34 at the left and right ends to rotate at a uniform speed. One end of each first pulling line body 35 winds around the corresponding wire spool 34 along the rotation direction of the transmission member 32, the first pulling line body 35 on the left side winds around the wire spool 34 on the left side, and the first pulling line body 35 on the right side winds around the wire spool 34 on the right side. When the driving motor 31 drives the transmission shaft 33 to rotate, the transmission shaft 33 can drive the wire reels 34 on the left and right sides to rotate, so that the first wire lifting bodies 35 on the left and right sides can drive the lifting tray 2 to ascend or descend simultaneously.

Referring to fig. 7-9, according to some embodiments of the present invention, first guide tensioning mechanism 12 includes: the first guide frame 121, the first guide wheel 122 and the first limiting roller 123, the first guide wheel 122 is rotatably disposed on the first guide frame 121, the first limiting roller 123 is rotatably disposed on the first guide frame 121, the first guide wheel 122 is a plurality of (for example, two) guide wheels arranged at intervals in the front-rear direction, the first pull wire body 35 bypasses the plurality of first guide wheels 122, the first pull wire body 35 moves along with the rotation of the first guide wheel 122, the first guide wheel 122 can not only guide the movement of the first pull wire body 35, but also reduce the friction force in the movement of the first pull wire body 35, thereby ensuring the service life of the first pull wire body 35, and limiting the first pull wire body 35 in the downward direction. The first limiting roller 123 is located between two adjacent first guide wheels 122, and the first limiting roller 123 is located above the first pulling line body 35, so that the first pulling line body 35 can be limited in the upward direction, and the first pulling line body 35 is prevented from shaking.

For example, referring to fig. 7 to 9, the first guide-tensioning mechanism 12 has two first guide frames 121, the two first guide frames 121 are spaced apart in the left-right direction, and the first guide frames 121 are fixed to the top of the frame body 10 by fasteners. Each first guide frame 121 is provided with two first guide wheels 122 arranged at intervals in a front-back manner, the driving motor 31 winds the first lifting wire body 35 when driving the wire spool 34 to rotate anticlockwise, the first lifting wire body 35 pulls the lifting tray 2 to ascend, and at the moment, the first guide wheels 122 rotate clockwise; when the driving motor 31 drives the wire spool 34 to rotate clockwise, the lifting tray 2 descends, and at this time, the first guide wheel 122 rotates counterclockwise.

Referring to fig. 7 to 9, the second guide tension mechanism 13 includes: the second guide frame 131, the second guide wheel 132, and the second limiting roller 133, the second guide wheel 132 is rotatably disposed on the second guide frame 131, the second limiting roller 133 is rotatably disposed on the second guide frame 131, the second guide wheel 132 is a plurality of (e.g., two) second guide wheels 132 disposed at intervals in the front-rear direction, the second pull wire body 43 passes around the plurality of second guide wheels 132, the second pull wire body 43 moves along with the rotation of the second guide wheel 132, the second guide wheel 132 can guide the movement of the second pull wire body 43, reduce the friction force in the movement of the second pull wire body 43, ensure the service life of the second pull wire body 43, and limit the second pull wire body in the downward direction. The second limiting roller 133 is located between two adjacent second guide wheels 132, and the second limiting roller 133 is located above the second pull wire body 43, so that the second pull wire body 43 can be limited in the upward direction, and the first pull wire body 35 is prevented from shaking.

For example, referring to fig. 7 to 9, according to an embodiment of the present invention, the second guiding and tensioning mechanism 13 has four second guiding frames 131, the two second guiding frames 131 are in a set, the two second guiding frames 131 in the set are spaced apart in the front-rear direction, the two second guiding frames 131 in the set are spaced apart in the left-right direction, each second guiding frame 131 has one second guiding wheel 132 and one second limiting roller 133, and the two second limiting rollers 133 in the set are located between the two second guiding wheels 132. The left second pull wire body 43 is looped around the left two second guide wheels 132, and the right second pull wire body 43 is looped around the right two second guide wheels 132. When the driving motor 31 drives the wire spool 34 to rotate counterclockwise, the second lifting wire body 43 is wound, the lifting tray 2 is lifted by the second lifting wire body 43, and at this time, the second guide wheel 132 rotates clockwise; when the driving motor 31 drives the wire spool 34 to rotate clockwise, the lifting tray 2 descends, and at this time, the second guide wheel 132 rotates counterclockwise.

In the present invention, the term "plurality" means two or more.

Referring to fig. 5, 7 and 8, according to some embodiments of the present invention, the left and right sides of the weight 41 are provided with the first guide rollers 42, the frame body 10 is provided with the first guide rails 105 extending along the up-down direction, the first guide rails 105 are two arranged at left and right intervals, each first guide roller 42 is suitable for moving along the corresponding first guide rail 105 along the up-down direction, and the first guide rollers 42 are in rolling contact with the corresponding first guide rails 105, so that friction can be reduced, and the lifting tray 2 can be ensured to be stable and noiseless when lifting. For example, the first guide rail 105 may be welded to the frame body 10, the first guide rollers 42 may be fixed to left and right sides of the weight member 41 by fastening members, the left first guide roller 42 of the weight member 41 may move up and down along the left first guide rail 105, and the right first guide rail 105 of the weight member 41 may move up and down along the right first guide rail 105.

Referring to fig. 5, according to some optional embodiments of the present invention, the first guiding rail 105 has two guiding surfaces 106, the two guiding surfaces 106 are disposed at an included angle, each guiding surface 106 extends along the up-down direction, and the two first guiding rollers 42 are disposed on the left and right sides of the counterweight 41, for example, the rotation axes of the two first guiding rollers 42 may form an angle with each other, and the included angle between the rotation axes of the two first guiding rollers 42 is consistent with the included angle between the two guiding surfaces 106. The two first guide rollers 42 respectively correspond to the two guide surfaces 106 of the first guide rail 105, and the first guide rollers 42 respectively contact with the two guide surfaces 106 of the corresponding first guide rail 105 in a rolling manner, so that friction can be reduced, no noise is generated in the lifting process of the counterweight 41, and the lifting stability of the lifting tray 2 can be ensured.

Referring to fig. 7 and 8, according to some embodiments of the present invention, the lifting tray 2 is detachably connected to the other end of the first lifting wire body 35, and the lifting tray 2 is detachably connected to the other end of the second lifting wire body 43; and/or the counterweight 41 is detachably connected with one end of the second pulling wire body 43, so that the first pulling wire body 35 and the second pulling wire body 43 can be conveniently detached and replaced. For example, the ends of the first pulling line body 35 and the second pulling line body 43 connected to the lifting tray 2 are connected to the first connecting plate 36, and then the first connecting plate 36 is connected and fixed to the lifting tray 2 through a fastener, so that the first pulling line body 35 is connected and fixed to the lifting tray 2. One end of the second pull wire body 43 connected with the counterweight 41 is connected with the second connecting plate 44, and then the second connecting plate 44 is connected and fixed with the counterweight 41 through a fastener, so that the second pull wire body 43 is connected and fixed with the counterweight 41.

Optionally, the first pull wire body 35 and the second pull wire body 43 are both belts.

For example, referring to fig. 1 to 5, according to some embodiments of the present invention, the front end of the frame body 10 has a first bracket 101 and a second bracket 102, the first bracket 101 and the second bracket 102 are spaced apart in a left-right direction, and the first bracket 101 is located at a left side of the second bracket 102. The first and second brackets 101 and 102 have a fourth guide rail 103 on the side facing the outside of the frame body 10, the first and second brackets 101 and 102 have a fifth guide rail 104 on the side facing the inside of the frame body 10, and the fourth and fifth guide rails 103 and 104 extend in the up-down direction.

For example, referring to fig. 10, the left and right sides of the rear end of the lifting tray 2 are respectively provided with one lifting guide 8, wherein the left lifting guide 8 includes a fourth guide roller 81 and a fifth guide roller 82, the fourth guide roller 81 is located at the right side of the fifth guide rail 104, the fourth guide roller 81 is in rolling contact with the fifth guide rail 104 in the left-right direction, the fourth guide roller 81 can roll up and down along the fifth guide rail 104, and the fourth guide roller 81 can be provided in plural numbers (e.g., two numbers) spaced up and down. The two fifth guide rollers 82 form a group, the two fifth guide rollers 82 are in rolling contact with the front side surface and the rear side surface of the fourth guide rail 103 respectively, the fifth guide rollers 82 can roll up and down along the fourth guide rail 103, and the fifth guide rollers 82 can be a plurality of groups (for example, two groups) arranged at intervals up and down.

The right lifting guide device 8 and the left lifting guide device are symmetrically arranged, and the matching mode of the right lifting guide device 8 and the fourth guide rail 103 and the fifth guide rail 104 on the second bracket 102 is consistent with that on the left side, so that the description is omitted. Through lift guider 8 and the cooperation of fourth guide rail 103 and fifth guide rail 104, can be with the operation restriction of lift tray 2 for only moving from top to bottom along fourth guide rail 103 and fifth guide rail 104, guaranteed to move steadily at lift tray 2 lift in-process, and the clearance between leading wheel and the guide rail is less, avoids lift tray 2 to move from top to bottom in-process and support body 10 between the noise that produces.

Referring to fig. 2 and 10, according to some embodiments of the present invention, the lifting tray 2 includes: tray body 20 and direction subassembly 21, direction subassembly 21 is used for guiding material dolly 25 to walk to tray body 20 on, can guarantee the stability of material dolly 25 operation. The guide assembly 21 comprises two second guide rails 211 and at least one guide support table set 212, the two second guide rails 211 are arranged at intervals in the left-right direction, and each second guide rail 211 extends in the front-back direction and can guide the material trolley 25 to move front and back. The guide support table set 212 is arranged between the two second guide rails 211, the guide support table set 212 comprises a plurality of guide support tables 213, the guide support tables 213 are arranged in the front-back direction, each guide support table 213 is provided with a second guide roller 214 and a third guide roller 215, and the second guide rollers 214 and the third guide rollers 215 are arranged at intervals in the left-right direction, so that the structure is simple and the operation is easy. For example, the guide assembly 21 includes two guide rails and a set of guide support table groups 212, the guide support table group 212 is located at the middle of the two second guide rails 211 in the left-right direction, the guide support table group 212 includes five guide support tables 213 arranged in the front-rear direction, and the second guide roller 214 of the guide support tables 213 is located at the left side of the third guide roller 215.

Referring to fig. 1 and 10, a guide groove 216 is defined between the second guide roller 214 and the third guide roller 215 on each guide support 213, the wheels 251 of the material trolley 25 are adapted to run along the second guide rail 211, the bottom surface of the material trolley 25 is provided with a third guide rail 252, the third guide rail 252 is accommodated in the guide groove 216, the third guide rail 252 is adapted to be in rolling contact with the second guide roller 214, and the third guide rail 252 can also be in rolling contact with the third guide roller 215, so that friction can be reduced, noise can be avoided during the movement of the material trolley 25, and the movement stability of the material trolley 25 can be ensured. Because the guide supporting table set 212 comprises the plurality of guide supporting tables 213, and the plurality of guide supporting tables 213 are arranged along the front-back direction, the plurality of guide grooves 216 are arranged along the front-back direction, and the guide grooves 216 guide the operation of the material trolley 25, so that the material trolley 25 can move forwards or backwards conveniently.

Referring to fig. 10 and 11, according to some embodiments of the present invention, the lifting tray 2 includes: tray body 20 and locking Assembly 22, locking Assembly 22 are used for locking material dolly 25 on tray body 20, prevent that lift tray 2 lift in-process material dolly 25 from breaking away from lift tray 2, guarantee material dolly 25's stability. The locking assembly 22 includes a first locking assembly 23 and a second locking assembly 24, the first locking assembly 23 includes a first locking member 231 and a first locking driving mechanism 232, the first locking driving mechanism 232 is connected to the first locking member 231, the first locking driving mechanism 232 can drive the first locking member 231 to move between the first locking position and the first unlocking position, for example, the first locking driving mechanism 232 may be specifically a cylinder, and the first locking driving mechanism 232 can drive the first locking member 231 to rotate between the first locking position and the first unlocking position.

Referring to fig. 1, at the first locking position, the first locking member 231 is engaged with the material trolley 25 in the front-rear direction, for example, the first locking member 231 abuts against a front side wall of a front cross beam of the material trolley 25, the first locking member 231 limits the material trolley 25 from moving forward, and the first locking member 231 and the tray body 20 limit the material trolley 25 in the front-rear direction together, so as to realize fine positioning of the material trolley 25 in the front-rear direction; in the first unlocked position, the first locking member 231 is disengaged from the material trolley 25 in the fore-aft direction so that the material trolley 25 can move forward.

Referring to fig. 10 and 11, the second locking assembly 24 includes a second locking member 241 and a second locking driving mechanism 242, the second locking driving mechanism 242 is connected to the second locking member 241, the second locking driving mechanism 242 can drive the second locking member 241 to move, specifically rotate, between a second locking position and a second unlocking position, and the second locking driving mechanism can be specifically an air cylinder. In the second locking position, the second locking member 241 is engaged with the material trolley 25 in the up-down direction, for example, the second locking member 241 abuts against the upper end of the material trolley 25, the second locking member 241 limits the upward movement of the material trolley 25, and the second locking member 241 and the tray body 20 limit the material trolley 25 in the up-down direction together, so as to realize the fine positioning of the material trolley 25 in the up-down direction; in the second unlocked position, the second locking member 241 is disengaged from the material trolley 25 in the up-down direction to allow the material trolley 25 to move upward.

Through the cooperation of the first locking component 23 and the second locking component 24, the material trolley 25 can be limited in the up-down direction, and the material trolley 25 can also be limited in the front-back direction, so that the precise positioning of the material trolley 25 on the lifting tray 2 is realized. For example, sensors may be disposed in the first locking component 23 and the second locking component 24, and when the sensors detect that the material trolley 25 moves to the position of engagement with the locking component 22, the first locking driving mechanism 232 may drive the first locking member 231 to rotate from the first unlocking position to the first locking position, so as to limit the material trolley 25 in the front-rear direction; the second locking driving mechanism 242 may drive the second locking member 241 to rotate from the second unlocking position to the second locking position, and may limit the material trolley 25 in the up-down direction, so as to achieve the precise positioning of the material trolley 25 on the lifting tray 2.

Referring to fig. 1 and 11, according to some optional embodiments of the present invention, the tray body 20 is provided with a buffer block 201, when the material trolley 25 is locked on the tray body 20 by the locking component 22, the rear sidewall of the material trolley 25 abuts against the buffer block 201, and the buffer block 201 and the first locking component 231 are arranged in the front-rear direction, which helps to realize the precise positioning of the material trolley 25 on the lifting tray 2. For example, the first locking member 231 is located on the front side of the buffer block 201, the rear side wall of the front beam of the material trolley 25 abuts against the buffer block 201, the front side wall of the front beam abuts against the first locking member 231, and the front beam of the material trolley 25 is clamped between the buffer block 201 and the first locking member 231, so that the material trolley 25 is limited in the front-rear direction.

For example, referring to fig. 10 and 11, one first locking member 23 and two second locking members 24 are formed at each of left and right ends of the lifting tray 2, and the locking members 22 at the left and right ends are symmetrically disposed. Taking the locking assembly 22 at the left end of the lifting tray 2 as an example, two second locking assemblies 24 are arranged at intervals in the front-rear direction, the second locking assemblies 24 are positioned at the left side of the second guide rail 211, and the first locking assembly 23 is positioned at the rear side of the second locking assemblies 24. The rear end of tray body 20 is equipped with two buffer blocks 201, and two buffer blocks 201 set up along left right direction interval, and when material dolly 25 along guide way 216 and second guide rail 211 rearward movement, and the front beam butt buffer block 201 of material dolly 25, first locking actuating mechanism 232 can drive first locking piece 231 and rotate to latched position, and first locking piece 231 and buffer block 201 cooperation from beginning to end are fixed with the front beam clamp of material dolly 25.

Referring to fig. 1-5, according to some embodiments of the present invention, the lifting device 100 further includes a leveling component 9, the leveling component 9 is disposed on the bottom surface of the frame body 10, the leveling component 9 includes a plurality of leveling feet 91, the plurality of leveling feet 91 are arranged along the circumferential interval of the frame body 10, and the height of the leveling feet 91 is adjusted to level the frame body 10, so that the crane 1 is balanced, and the stability of the lifting device 100 is ensured. For example, the leveling assembly 9 includes four leveling feet 91 arranged at intervals along the circumferential direction of the frame body 10, the adjusting assembly further includes a first supporting plate 92 and a second supporting plate 93 arranged at intervals left and right, the bottom surface of the frame body 10 may be rectangular, four leveling feet are respectively arranged at four corners of the bottom surface of the frame body 10, two leveling feet 91 on the left side are welded to the upper surface of the first supporting plate 92 after leveling is completed, and two leveling feet 91 on the left side are welded to the upper surface of the second supporting plate 93 after leveling is completed. The first and second support plates 92 and 93 may be fixed to the ground by fasteners.

Referring to fig. 1-3, according to some embodiments of the present invention, the lifting device 100 further comprises a buffer support assembly 7, the buffer support assembly 7 is provided on the ground, and the buffer support assembly 7 is located in front of the crane 1. The buffering support assembly 7 comprises a plurality of buffering support legs 71 arranged at intervals, and the lifting tray 2 is suitable for being supported on the plurality of buffering support legs 71 when the lifting tray 2 is located at the lowest position, so that the self horizontal accuracy of the lifting tray 2 can be ensured. When the lifting tray 2 falls to the buffering supporting leg 71, the buffering effect of the buffering supporting leg 71 on the lifting tray 2 can protect the lifting tray 2, and the lifting tray 2 is prevented from being damaged due to overlarge impact load. For example, the buffering support assembly 7 includes four buffering support legs 71 spaced apart from each other, the bottom surface of the lifting tray 2 may be rectangular, and the four buffering support legs 71 are respectively supported at four corners of the bottom surface of the lifting tray 2.

Referring to fig. 5, according to some embodiments of the present invention, the lifting device 100 further includes at least one set of positioning structure set 5, the positioning structure set 5 is disposed on the frame body 10, and the positioning structure set 5 is used for positioning the lifting tray 2, so as to avoid the lifting tray 2 from being stopped for a long time after being lifted and from being changed in position. Each set of positioning structures 5 includes at least one positioning component 50, for example, each set of positioning structures 5 may include one positioning component 50, and each set of positioning structures 5 may also include a plurality of positioning components 50. When each positioning structure group 5 comprises a plurality of positioning assemblies 50, the plurality of positioning assemblies 50 are arranged at intervals in the left-right direction, which is beneficial to the positioning stability of the lifting tray 2; when the positioning structure group 5 is a plurality of groups, the plurality of groups of positioning structure groups 5 are arranged at intervals along the vertical direction, so that the positioning structure group 5 is more stable for positioning the lifting tray 2. For example, the lifting device 100 includes a set of positioning structure group 5, the positioning structure group 5 includes two positioning assemblies 50 arranged at intervals left and right, the positioning assemblies 50 can be fixed on the frame body 10 by fasteners, and the positioning assemblies 50 are located below the box body 15.

Referring to fig. 6, each positioning assembly 50 includes: the positioning mechanism 52 includes a driving member 521 and a positioning member 522, the driving member 521 is connected to the positioning member 522, the driving member 521 can drive the positioning member 522 to move, the lifting tray 2 is provided with a positioning hole 202, and the positioning member 522 is adapted to detachably cooperate with the positioning hole 202 to realize positioning or releasing of the lifting tray 2. The first position sensor 51 is electrically connected to the driving member 521, the first position sensor 51 is also electrically connected to the driving motor 31, when the first position sensor 51 detects that the lifting tray 2 moves to the set position, the lifting tray 2 stops moving, and the driving member 521 drives the positioning member 522 to extend into the positioning hole 202, so as to position the lifting tray 2 at the set position, thereby taking down the material on the lifting tray 2. Through the setting element 522 stretch into to locating hole 202 in to with lifting tray 2 location in the settlement position, can realize the accurate location to lifting tray 2 motion in-process to can restrict lifting tray 2 and descend.

For example, the driving member 521 may be a cylinder, the cylinder is connected to the valve island 53 through a connecting pipeline, the positioning member 522 may be connected to a piston in the cylinder, when the first position sensor 51 detects that the lifting tray 2 moves to a set position, the driving motor 31 stops working, the lifting tray 2 stops moving, at this time, the positioning hole 202 corresponds to the positioning member 522, meanwhile, the valve island 53 injects gas into the cylinder through the connecting pipeline, the gas pressure pushes the piston to move forward, and then pushes the positioning member 522 to move forward and extend into the positioning hole 202, so as to achieve fine positioning of the lifting tray 2 at the lifting position.

Referring to fig. 5, according to some optional embodiments of the present invention, the lifting device 100 further includes an over travel limiting assembly 6, the over travel limiting assembly 6 is disposed on the frame 10, for example, the over travel limiting assembly 6 may be fixed on the frame 10 through a fastener, the over travel limiting assembly 6 is disposed above all the positioning assemblies 50, and the over travel limiting assembly 6 can be prevented from affecting the positioning assemblies 50 to position the lifting tray 2. When the positioning structure groups 5 are a plurality of groups, the positioning structure groups 5 are arranged at intervals in the vertical direction, and the over-travel limiting assemblies 6 are positioned above all the positioning structure groups 5; when each positioning structure group 5 comprises a plurality of positioning assemblies 50, the positioning assemblies 50 are arranged at intervals in the left-right direction, and the over-travel limiting assembly 6 is positioned above all the positioning assemblies 50.

Referring to fig. 6, the over travel limit assembly 6 includes: second position sensor 61 and locating part 62, second position sensor 61 is connected with driving motor 31 electricity, detects when lift tray 2 upward movement reaches extreme position at second position sensor 61, and lift tray 2 stop motion can avoid lifting means 100 debugging in-process, and the workman operates the rising position of lift tray 2 and surpasss the design stroke, avoids damaging lifting means 100. The limiting member 62 is an elastic buffer member, and the limiting member 62 is used for limiting the lifting tray 2 in the upward direction, and plays a role in soft blocking and buffering the lifting tray 2. For example, the two over travel limit devices may be arranged at intervals from left to right, the left over travel limit device is arranged on the upper portion of the first bracket 101, and the right over travel limit device is arranged on the upper portion of the second bracket 102.

For example, referring to fig. 1, 2 and 7, according to some embodiments of the present invention, the lifting device 100 further includes a drag chain 14, an upper end of the drag chain 14 is connected to an upper end of the frame body 10, a lower end of the drag chain 14 is connected to an upper end of the lifting tray 2, the drag chain 14 is hollow for accommodating the connecting pipeline and the wire harness, the drag chain 14 can protect the connecting pipeline and the wire harness, and at the same time, the wire harness can be prevented from being entangled and knotted during the ascending and descending of the lifting tray 2. The valve island 53 may be provided on the base, the valve island 53 may be connected to the driving member 521 through a connecting line, and the valve island 53 may also be connected to the first locking driving mechanism 232 and the second locking driving mechanism 242 through a connecting line.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A lifting device, comprising:

the lifting frame comprises a frame body, a fixed seat, a first guide tensioning mechanism and a second guide tensioning mechanism, wherein the fixed seat is arranged at the lower end of the frame body, and the first guide tensioning mechanism and the second guide tensioning mechanism are arranged at the upper end of the frame body;

the lifting tray is used for placing materials to be lifted, and the lifting tray is arranged on the front side of the lifting frame in a manner of moving up and down;

the main driving mechanism is used for driving the lifting tray to move up and down, and comprises a driving motor, a transmission part and a first lifting wire body, the driving motor is arranged on the fixed seat, the output end of the driving motor is connected with the transmission part to drive the transmission part to rotate, the transmission part is positioned at the rear end of the frame body, one end of the first lifting wire body is wound on the transmission part along the rotating direction of the transmission part, and the other end of the first lifting wire body is wound around the first guiding and tensioning mechanism and is connected with the lifting tray;

and the auxiliary driving mechanism comprises a counterweight and a second lifting wire body, the counterweight is positioned at the rear end of the frame body, one end of the second lifting wire body is connected with the counterweight, and the other end of the second lifting wire body bypasses the second guide tensioning mechanism and is connected with the lifting tray.

2. The lifting device as claimed in claim 1, wherein the first pulling wire body is two and the second pulling wire body is two and the two second pulling wire bodies are located between the two first pulling wire bodies.

3. The lifting equipment as claimed in claim 1, wherein the transmission member includes a transmission shaft and a wire spool disposed on the transmission shaft, one end of the first pulling wire body is wound on the wire spool along a rotation direction of the transmission member, the fixing base further has a wire spool rotatably disposed on the wire spool;

the first pulling line body is two arranged at left and right intervals, the transmission part comprises two wire reels, the two wire reels are respectively arranged at left and right ends of the transmission shaft, the two wire reels are arranged at left and right sides, each wire reel is rotatably arranged on the corresponding wire reel, the output end of the driving motor is connected with the middle part of the transmission shaft, and one end of each first pulling line body is wound on the corresponding wire reel along the rotation direction of the transmission part.

4. The lift device recited in claim 1 wherein the first guide tensioning mechanism comprises: the first guide wheels and the first limiting rollers are rotatably arranged on the first guide frame, the first guide wheels are arranged at intervals in the front-back direction, the first wire lifting body bypasses the first guide wheels, and the first limiting rollers are positioned between every two adjacent first guide wheels and above the first wire lifting body; and/or, the second guiding and tensioning mechanism comprises: the second guide frame, the second guide wheels and the second limiting rollers are rotatably arranged on the second guide frame, the second guide wheels are arranged in a plurality of intervals along the front-back direction, the second lifting line body bypasses the second guide wheels, and the second limiting rollers are located between every two adjacent second guide wheels and above the second lifting line body.

5. The lifting device according to claim 1, wherein the left and right sides of the weight member are provided with first guide rollers, the frame body is provided with first guide rails extending in an up-down direction, the first guide rails are spaced apart from each other in the left-right direction, each of the first guide rollers is adapted to move in the up-down direction along the corresponding first guide rail, and the first guide rollers are in rolling contact with the corresponding first guide rail; the first guide rail is provided with two guide surfaces which are arranged at included angles, each guide surface extends along the upper direction and the lower direction, the left side and the right side of the counterweight piece are respectively provided with two first guide rollers, two first guide rollers are respectively in rolling contact with the two guide surfaces of the first guide rail.

6. The lift device of claim 1, wherein the weight of the counterweight is less than the weight of the empty lift tray; and/or, the weight part comprises a plurality of superposed weight plates, and the plurality of weight plates are detachably connected.

7. The lift device of claim 1, wherein the lift tray comprises:

a tray body;

the material trolley comprises a tray body, a guide assembly, wherein the guide assembly is used for guiding the material trolley to walk to the tray body and comprises two second guide rails and at least one group of guide supporting table groups, the two second guide rails are arranged at intervals in the left-right direction and extend in the front-back direction, the guide supporting table groups are arranged between the two second guide rails and comprise a plurality of guide supporting tables arranged in the front-back direction, each guide supporting table is provided with a second guide roller and a third guide roller which are arranged at intervals in the left-right direction, each guide supporting table is provided with a guide groove between the second guide roller and the third guide roller, wheels of the material trolley are suitable for walking along the second guide rails, the bottom surface of the material trolley is provided with a third guide rail, and the third guide rail is contained in the guide grooves and is suitable for being in rolling contact with the second guide rollers and the third guide rollers.

8. The lift device of claim 1, wherein the lift tray comprises:

a tray body;

the locking assembly is used for locking the material trolley on the tray body and comprises a first locking assembly and a second locking assembly;

the first locking assembly comprises a first locking piece and a first locking driving mechanism, the first locking driving mechanism is connected with the first locking piece to drive the first locking piece to move between a first locking position and a first unlocking position, the first locking piece is matched with the material trolley in the front-back direction and limits the material trolley to move forwards in the first locking position, the first locking piece and the pallet body limit the material trolley in the front-back direction together, and the first locking piece is disengaged from the material trolley in the front-back direction in the first unlocking position so that the material trolley can move forwards;

the second locking assembly comprises a second locking piece and a second locking driving mechanism, the second locking driving mechanism is connected with the second locking piece to drive the second locking piece to move between a second locking position and a second unlocking position, the second locking piece is matched with the material trolley in the up-down direction and limits the material trolley to move upwards in the second locking position, the second locking piece and the tray body jointly limit the material trolley in the up-down direction, and the second locking piece is disengaged from the material trolley in the up-down direction in the second unlocking position so that the material trolley can move upwards;

the tray body is provided with a buffer block, when the material trolley is locked on the tray body through the locking assembly, the rear side wall of the material trolley is abutted to the buffer block, and the buffer block and the first locking piece are oppositely arranged in the front-rear direction.

9. The lifting apparatus of claim 1, comprising: the leveling assembly is arranged on the bottom surface of the frame body and comprises a plurality of leveling feet which are distributed at intervals along the circumferential direction of the frame body, and the frame body is leveled by adjusting the heights of the leveling feet; and/or, further comprising: the buffer support assembly is arranged on the ground and located in front of the lifting frame, the buffer support assembly comprises a plurality of buffer supporting feet arranged at intervals, and the lifting tray is suitable for supporting the plurality of buffer supporting feet when located at the lowest position.

10. The lifting apparatus as claimed in any one of claims 1 to 9, further comprising: at least a set of location structure group, the location structure group locate the support body just is used for right the lift tray location, every group location structure group includes at least one locating component, is every group location structure group includes a plurality of during locating component, it is a plurality of locating component arranges along left and right direction interval location component when the location structure group is the multiunit, the multiunit location structure group arranges along upper and lower direction interval, every locating component includes:

a first position sensor;

the positioning mechanism comprises a driving piece and a positioning piece, the driving piece is connected with the positioning piece to drive the positioning piece to move, the lifting tray is provided with a positioning hole, and the positioning piece is suitable for being detachably matched with the positioning hole;

the first position sensor is electrically connected with the driving piece and the driving motor, when the first position sensor detects that the lifting tray moves to a set position, the lifting tray stops moving, and the driving piece drives the positioning piece to extend into the positioning hole, so that the lifting tray is positioned at the set position;

further comprising: spacing subassembly of overtravel, spacing subassembly of overtravel is located support body and all locating component's top, spacing subassembly of overtravel includes:

the second position sensor is electrically connected with the driving motor, and when the second position sensor detects that the lifting tray moves upwards to an upper limit position, the lifting tray stops moving;

the limiting part is an elastic buffering part and is used for limiting the lifting tray in the upward direction.

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