CN110921554A

CN110921554A - Roller loading and unloading lifting device and using method thereof

Info

Publication number: CN110921554A
Application number: CN202010094843.8A
Authority: CN
Inventors: 孙之夫; 任丽芳; 冯涛; 李晓龙; 杨莹芳; 张金磊; 尹超
Original assignee: Shandong Yanhuang Industrial Design Co ltd
Current assignee: Shandong Yanhuang Industrial Design Co ltd
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-03-27
Anticipated expiration: 2040-02-17
Also published as: CN111559719A; CN110921554B

Abstract

The invention provides a roller loading and unloading lifting device, which comprises an electric control system, a linear motion mechanism, a sliding frame, a lifting device, a grabbing part and a roller conveying device, wherein the electric control system is connected with the linear motion mechanism; the lifting device comprises a mounting seat arranged on the sliding frame, a worm gear and a worm which are meshed with each other are arranged on the mounting seat, a lead screw is screwed in the worm gear, the lead screw is rotatably connected with a support, a first gear is fixedly arranged on the lead screw, the first gear is discontinuously meshed with a third gear, a second gear is arranged on the support, the second gear is discontinuously meshed with a fourth gear, and the third gear and the fourth gear are coaxially arranged. By adopting the roller loading and unloading lifting device and the use method thereof, a plurality of rollers can be grabbed at one time and conveyed to the designated positions, so that the labor intensity of operators is greatly reduced, the roller is prevented from rolling down and injuring the operators, and the safety risk of equipment operation is reduced; the device has simple structure, and can meet the multiple requirements of low cost and simple operation of the rod mill in an ore grinding laboratory and reduce the labor intensity.

Description

Roller loading and unloading lifting device and using method thereof

Technical Field

The invention belongs to the technical field of ore processing equipment, and particularly relates to a roller loading and unloading lifting device and a using method thereof.

Background

The rod mill is a small, light and multipurpose novel ore grinding device for laboratory, and can be used for grinding ores when laboratories, research units and ore dressing plants for metallurgy, geology, chemical industry, building materials, coal and the like carry out ore selectivity research work, in particular to an optimal ideal device for grinding gold samples. When the grinding machine works, the motor is driven by the belt pulley to drive the driving roller to rotate after being regulated by the speed change mechanism, the driving roller drives the plurality of grinding cylinders contacted with the driving roller to rotate simultaneously, and each grinding cylinder is internally provided with a proper amount of samples and a certain amount of grinding rods. The existing traditional laboratory rod mill equipment has the advantages that the roller is completely carried by manpower up and down, fifty cylinders with four rollers are taken as an example, one ore grinding process needs to be carried by manpower up and down for 100 times, the weight of the roller is generally 3-6 kilograms, the labor intensity of an operator is high, the roller is not firmly gripped, personal injury is extremely easily caused, and the development of the equipment for automatically loading, unloading and carrying the roller of the laboratory rod mill with simple structure, convenience in operation and low manufacturing cost is urgently needed.

Disclosure of Invention

The invention provides a roller loading and unloading lifting device and a using method thereof, aiming at the problems of high labor intensity, potential safety hazards and the like of the existing rod mill roller loading and unloading and carrying, and the roller loading and unloading lifting device can realize automatic loading and unloading of a roller, reduce the labor intensity of operators, and has the advantages of simple equipment structure, low manufacturing cost and convenient operation.

In order to achieve the purpose, the invention adopts the technical scheme that:

a roller loading and unloading lifting device comprises an electric control system; a linear motion mechanism; the linear motion mechanism is fixedly connected with a sliding frame; the sliding frame is provided with a lifting device, and the lifting device is provided with a grabbing part; the roller conveying device is matched with the lifting device;

the lifting device comprises a mounting seat arranged on the sliding frame; a worm is rotatably arranged on the mounting seat; the worm is connected with a first motor; the worm is meshed with a worm wheel, and the inner wall of the worm wheel is provided with threads; a screw is screwed on the thread on the inner wall of the turbine; the screw rod is rotatably connected with a bracket, and the bracket is provided with a guide hole; the guide hole of the bracket is provided with a guide part in a matching way; a first gear is fixedly arranged on the screw rod; a second gear is fixedly arranged on the bracket and is coaxial with the lead screw; the mounting frame is fixedly arranged on the sliding frame; one end of the rotating shaft is rotatably connected with the top of the sliding frame, the other end of the rotating shaft is rotatably connected with the mounting frame, and the rotating shaft is vertically arranged; a third gear and a fourth gear are fixedly arranged on the shaft, and the third gear and the first gear can be meshed discontinuously; the fourth gear and the second gear can be meshed discontinuously;

the grabbing part comprises a seat plate fixedly connected with the bracket; the seat board is provided with a plurality of clamping parts, and the clamping parts comprise a plurality of sector ring claws which are distributed annularly.

Further, the first gear is arranged below the bracket; the second gear is fixedly arranged above the bracket; the fourth gear is arranged above the third gear; the distance between the upper surface of the first gear and the lower surface of the third gear is greater than the distance between the upper surface of the second gear and the lower surface of the fourth gear.

Further, the roller conveying device comprises a roller frame, and a lifting platform is fixedly arranged on the roller frame; and a plurality of positioning shafts are fixedly arranged on the lifting platform.

Further, after the third gear is meshed with the first gear, the guide part is positioned outside the bracket.

Further, the bracket comprises a first bracket horizontally arranged and a second bracket vertically arranged, and the lower part of the first bracket is rotationally connected with the screw rod; the grabbing part is fixedly arranged on the second support.

Furthermore, the mounting rack is L-shaped, the mounting rack comprises a vertical arm and a horizontal arm, the vertical arm is vertically arranged, the horizontal arm is horizontally arranged, and the top of the vertical arm is fixedly connected with the sliding frame; the horizontal arm is rotatably connected with one end of the rotating shaft.

Furthermore, a positioning locking part is arranged on the roller frame, and a positioning part matched with the roller frame is arranged on the rack of the rod mill.

Furthermore, the bottom of the seat board is composed of a plurality of circular arcs.

A use method of a roller loading and unloading lifting device comprises the following steps:

the linear motion mechanism moves to drive the sliding frame to move leftwards, so that the grabbing part is driven to move leftwards, when the roller enters the clamping part to a set depth, the linear motion mechanism stops moving, and at the moment, the arc of the inner wall of the sector ring claw of the clamping part is concentric with the excircle of the roller;

then, the first motor rotates positively to drive the worm to rotate, and the worm rotates to drive the lead screw to move upwards so as to drive the grabbing part to load the roller to move upwards; when the screw rod moves upwards for a set height, the gear teeth of the second gear enter the gear grooves of the fourth gear, and the second gear and the fourth gear are only meshed but do not rotate; after the screw rod continues to move upwards for setting the height, the third gear and the first gear start to be meshed, the first gear rotates to drive the third gear to rotate so as to drive the fourth gear to rotate, the fourth gear rotates to drive the second gear to rotate, and the second gear rotates to drive the support to rotate; when the support rotates for 180 degrees, the first motor stops rotating, and the grabbing part is located at the highest position;

fixing the roller conveying device at a set position, enabling the linear motion mechanism to move to drive the sliding frame to move above the roller conveying device, controlling the lifting table to move upwards, further enabling the roller to move upwards, and stopping moving when the outer circle of the roller is concentric with the arc of the inner wall of the fan-shaped ring claw of the clamping part; controlling the linear motion mechanism to move to drive the sliding frame to move until the roller is completely positioned outside the clamping part; controlling the lifting platform to move downwards to an initial position of the lifting platform;

then, the first motor rotates reversely, the second gear rotates to drive the support to rotate reversely while driving the lead screw to move downwards, after the support rotates reversely by 180 degrees, the first gear is disconnected from the third gear, the support stops rotating and only moves downwards to a set position under the driving of the lead screw, and unloading of one group of rollers is completed;

repeating the steps until the roller is unloaded.

The embodiment of the invention has at least the following technical effects:

(1) according to the invention, by arranging the linear motion mechanism, the sliding frame, the lifting device, the grabbing part and the roller conveying device, the automatic loading and unloading of the roller can be realized, the labor intensity of operators is reduced, the equipment structure is simple, the manufacturing cost is low, and the operation is convenient.

(2) According to the invention, by adopting the technical scheme that the bottom of the seat plate is formed by a plurality of arcs, the size of the seat plate is reasonable, and the seat plate is prevented from colliding with the rack; adopt "the bedplate is provided with a plurality of clamping parts, the clamping part is including the technical scheme who is a plurality of fan ring claws that the annular distributes", and the ingenious setting of the fan ring claw of clamping part for inside being located the clamping part among the snatching process of cylinder, the cylinder can not drop, and the snatching process is steady, also makes equipment structure compacter, and is light and handy.

(3) According to the technical scheme, the support is connected with the lead screw in a rotating mode, the lead screw is further fixedly provided with the first gear, the first gear is in discontinuous meshing with the third gear, the second gear is arranged on the support, the second gear is in discontinuous meshing with the fourth gear, and the third gear and the fourth gear are coaxially arranged, so that the lifting device can realize lifting, rotating and descending of the grabbing part only by adopting positive and negative rotation of one motor, and the device is simple in operation, compact in structure and low in manufacturing cost.

(4) The worm is arranged to be meshed with the worm wheel, and the inner wall of the worm wheel is provided with threads; the screw rod is in threaded connection with the threads on the inner wall of the turbine; the technical scheme that the lead screw is connected with the support in a rotating mode adopts a worm and gear transmission mode, so that reversing deceleration and up-and-down reciprocating movement of the lead screw can be realized, the self-locking capacity is strong, and the roller carrying process is safer and more reliable.

(5) According to the technical scheme, the grabbing part is provided with the seat plate, the plurality of clamping parts matched with the rollers are welded on the seat plate, the plurality of sector ring claws distributed annularly are arranged on the clamping parts, and the diameter of the circular arc of the inner wall of each sector ring claw is slightly larger than that of the roller.

Drawings

FIG. 1 is a schematic view of a rod mill configuration;

FIG. 2 is a schematic view of the overall structure of the roller loading/unloading elevator apparatus of the present invention;

FIG. 3 is a partial view taken from the direction A of FIG. 2;

FIG. 4 is a schematic structural diagram of the lifting device of the present invention;

FIG. 5 is a schematic view of the structure of the grasping portion of the present invention;

FIG. 6 is a perspective view of the grasping portion of the present invention;

FIG. 7 is a schematic diagram of the relative positions of the roller and the rubber roller;

FIG. 8 is a schematic view of the position of the nip concentric with the drum of the present invention;

FIG. 9 is a schematic view of the position of the grip part gripping roller of the present invention;

FIG. 10 is a view showing the relationship between the first gear and the third gear when the grasping portion of the present invention is in the grasping position;

illustration of the drawings:

1. a frame; 11. a seat plate; 12. a circular arc portion; 2. rubber roller, 3, roller; 4. a first space; 5. a second space; 6. a third space; 100. a linear motion mechanism; 200. a carriage; 300. a lifting device; 301. a mounting seat; 302. a worm; 303. a turbine; 304. a lead screw; 305. a mounting frame; 306. a third gear; 307. a fourth gear; 308. a rotating shaft; 309. a second gear; 310. a first gear; 311. a support; 3111. a first bracket; 3112. a second bracket; 312. a guide portion; 400. a grasping section; 401. a seat plate; 402. a clamping portion; 500. a drum conveying device; 501. a roller frame; 502. a lifting platform; 503. and (5) positioning the shaft.

Detailed Description

In order to make the technical means, objectives and functions of the present invention easy to understand, the present invention will be further described with reference to the following embodiments.

As shown in fig. 1 and 2, the existing rod mill product comprises a frame 1, a plurality of rubber rollers 2 rotatably mounted on the frame 1, the rubber rollers 2 connected with a driving device, the driving device driving the rubber rollers 2 to rotate at a high speed, and a roller 3, wherein the roller 3 is placed above two adjacent rubber rollers 2; preferably, the frame 1 includes the bedplate 11, and bedplate 11 is used for the installation of rubber roll 2, be provided with circular arc portion 12 with the rubber roll 2 is concentric on the bedplate 11, the diameter of circular arc portion 12 is less than the diameter of rubber roll 2 can make the portion of snatching 400 can not collide with frame 1 when snatching cylinder 3.

The roller loading and unloading lifting device disclosed by the invention comprises an electric control system, as shown in figures 2-4; a linear motion mechanism 100 mounted on the frame 1; the linear motion mechanism 100 is fixedly connected with a sliding frame 200; the carriage 200 is provided with a lifting device 300, and the lifting device 300 is provided with a grabbing part 400; the roller conveying device 500 matched with the lifting device 300 is further included.

The linear motion mechanism 100 is preferably a screw nut transmission mechanism, and is a mature technology in the prior art, and is not described herein again; the linear motion mechanism 100 can drive the sliding frame 200 to do linear reciprocating motion along the direction parallel to the axis of the rubber roller 2.

The lifting device 300, as shown in fig. 3-4, includes a mounting seat 301 disposed on the carriage 200; a worm 302 is rotatably arranged on the mounting seat 301; the worm 302 is connected with a first motor; the worm 302 is meshed with a worm wheel 303, and a worm wheel and worm transmission mode is adopted, so that the reversing and speed reducing can be realized, and the self-locking capacity is strong; the inner wall of the turbine 303 is provided with threads; a screw 304 is screwed on the thread on the inner wall of the turbine 303, and the turbine 303 rotates to drive the screw 304 to move up and down in the turbine 303; the lead screw 304 is rotatably connected with a bracket 311, the lead screw 304 can drive the bracket 311 to move up and down by moving up and down, and the bracket 311 is provided with a guide hole; the guide hole of the bracket 311 is provided with a guide part 312 in a matching way; the guide 312 is provided to prevent the rotation of the bracket 311, the bracket 311 can move up and down along the guide 312, and the guide 312 is located outside the bracket 311 after the bracket 311 moves up to a set height. Preferably, the support 311 includes a first support 3111 horizontally disposed and a second support 3112 vertically disposed, and a lower portion of the first support 3111 is rotatably connected to the screw 304.

A first gear 310 is fixedly arranged on the screw 304, and the screw 304 rotates to drive the first gear 310 to rotate; preferably, the first gear 310 is disposed below the bracket 311; the bracket 311 is fixedly provided with a second gear 309, the second gear 309 is coaxially arranged with the lead screw 304, and the second gear 309 is fixedly arranged above the bracket 311. The second gear 309 of the invention can drive the bracket 311 to rotate; preferably, the second gear 309 is fixedly mounted above the first bracket 3111.

The lifting device 300 further comprises a mounting bracket 305 and a rotating shaft 308, wherein the mounting bracket 305 is fixedly arranged on the carriage 200; preferably, the mounting rack 305 is L-shaped, and the mounting rack 305 includes a vertically arranged vertical arm and a horizontally arranged horizontal arm, and the top of the vertical arm is connected with the top of the sliding frame.

One end of the rotating shaft 308 is rotatably connected with the top of the sliding frame 200, the other end of the rotating shaft 308 is rotatably connected with the mounting frame 305, and the rotating shaft 308 is vertically arranged.

A third gear 306 is fixedly arranged on the shaft 308, the third gear 306 and the first gear 310 can be intermittently meshed, and when the third gear 306 and the first gear 310 are meshed, the guide part 312 is positioned outside the bracket 311; a fourth gear 307 is fixedly arranged on the rotating shaft 308, the fourth gear 307 and the second gear 309 can be intermittently meshed, and the fourth gear 307 is arranged above the third gear 306; as shown in fig. 10, the distance from the upper surface of the first gear 310 to the lower surface of the third gear 306 is greater than the distance from the upper surface of the second gear 309 to the lower surface of the fourth gear 307. The arrangement is such that during the upward movement of the screw 304, the second gear 309 and the fourth gear 307 are engaged, but do not rotate; when the third gear 306 is engaged with the first gear 310, the first gear 310 rotates to drive the third gear 306 to rotate, and further drive the fourth gear 307 to rotate, the fourth gear 307 rotates to drive the second gear 309 to rotate, and the second gear 309 rotates to drive the bracket 311 to rotate.

As shown in fig. 5 and 6, the grasping portion 400 of the present invention is fixedly mounted on the bracket 311, and specifically, the grasping portion 400 is fixedly mounted on the second bracket 3112. The grabbing part 400 comprises a seat plate 401 fixedly connected with the bracket 311; the welding has a plurality of clamping part 402 that match with cylinder 3 on the bedplate 401, and is specific, clamping part 402 is including being a plurality of fan ring claws that the annular distributes, and fan ring claw inner wall circular arc diameter slightly is greater than the diameter of cylinder 3, and preferred difference is 2 mm.

As shown in fig. 7, taking four

rubber rollers

2 and 5 rollers 3 as an example, a first space 4 is formed between two adjacent rubber rollers 2 and the rollers 3, a second space 5 is formed between three rollers 3 and the rubber rollers 2, a third space 6 is formed between four rollers 3, the thickness of the sector ring claw is determined according to the diameters of each rubber roller 2 and each roller 3, and the preferred thickness is 2-3mm, so that the sector ring claw can be inserted into the first space 4, the second space 5 and the third space 6 without interfering with other parts.

Specifically, the bottom of the seat plate 401 is formed by a plurality of arcs, so that the size of the seat plate 401 is reasonable, and the seat plate 401 is prevented from colliding with the rack 1; the ingenious setting of the sector ring claw of clamping part 402 for inside cylinder 3's the in-process of snatching located clamping part 402, cylinder 3 can not drop, and the process of snatching is steady, also makes equipment structure compacter, and is light and handy.

The roller conveyor 500, as shown in fig. 2, is configured to mate with the elevator apparatus 300, and the roller conveyor 500 is secured to one side of the rod mill during use. The roller conveying device 500 comprises a roller frame 501, a lifting platform 502 is fixedly mounted on the roller frame 501, the lifting platform 502 can be lifted by adopting a hydraulic device, and can also be lifted by adopting devices such as an air cylinder or a lead screw nut, and the like, and the lifting platform 502 is the prior mature technology and is not described herein again. A plurality of positioning shafts 503 are fixedly mounted on the lifting platform 502, the diameter of the positioning shafts 503 is the same as that of the rubber roller 2, the number of the positioning shafts 503 is equal to that of the rubber roller 2, and the roller 3 can be placed between two adjacent positioning shafts 503. Preferably, a positioning part is arranged on the frame 1, a positioning locking part which is matched with the positioning part of the frame 1 is arranged on the roller frame 501, and the positioning part and the positioning locking part are arranged for positioning and locking the roller conveying device 500 and the frame 1, so that the corresponding positioning shaft 503 and the axis of the rubber roller 2 are positioned on the same vertical plane. Preferably, a roller is installed below the roller frame 501, and the roller is provided with a self-locking component and has a self-locking function. The mode that can realize fixing and locking between frame 1 and roller frame 501 can be for adopting the current mature technique such as locking buckle, and the specific structure of this location portion and location locking portion is not repeated.

The electric control system is electrically connected with the linear motion mechanism 100, the first motor and the lifting platform 502 respectively, the electric control system controls the linear motion mechanism 100 through a control program, and the motion of the first motor, the lifting platform 502 and other mechanisms belongs to the prior mature technology, and is not described herein again.

When the gripper 400 is located at the lowest position, the gripper 400 is in the gripping position, and the arc of the inner wall of the sector-ring claw of the gripper 402 is concentric with the drum 3, as shown in fig. 8. When the gripper 400 is at the highest position, it is the unloading position of the gripper 400, and the positional relationship between the nip 402 and the drum 3 is as shown in fig. 9.

The carriage 200 is disposed at the rightmost side of the frame 1, and the initial position of the drum loading/unloading lift device is set when the grip portion 400 is at the grip position.

The initial position of the lift table 502 is set when the lift table 502 is at the lowest position.

The working principle of the roller loading and unloading lifting device of the invention is as follows:

the electric control system controls the linear motion mechanism 100 to move to drive the sliding frame 200 to move leftwards, so as to drive the grabbing part 400 to move leftwards, when the roller 3 enters the clamping part 402 at a set depth (the set depth is not easy to be suitable after the roller 3 enters the clamping part 402), the linear motion mechanism 100 stops moving, and at the moment, the arc of the inner wall of the sector ring claw of the clamping part 402 is concentric with the excircle of the roller 3;

then, the first motor rotates positively to drive the worm 302 to rotate, the worm 302 rotates to drive the lead screw 304 to move upwards, and the grabbing part 400 is driven to load the roller 3 to move upwards; when the screw rod 304 moves upwards for a set height (the set height is the distance moved by the grabbing part 400 to be completely positioned above the rubber roller 2), the teeth of the second gear 309 enter the tooth grooves of the fourth gear 307, and the second gear 309 and the fourth gear 307 are only meshed but do not rotate because no power is input; after the screw 304 continues to move upward for setting the height, the third gear 306 and the first gear 310 start to be meshed, the first gear 310 rotates to drive the third gear 306 to rotate, and further drive the fourth gear 307 to rotate, the fourth gear 307 rotates to drive the second gear 309 to rotate, and the second gear 309 rotates to drive the bracket 311 to rotate; when the bracket 311 rotates 180 degrees, the first motor stops rotating, and the grabbing part 400 is located at the highest position, namely the unloading position;

the roller conveying device 500 and the rack 1 are positioned and locked, the electric control system controls the linear motion mechanism 100 to move to drive the sliding frame 200 to move above the roller conveying device 500, the lifting table 502 is controlled to move upwards, the positioning shaft 503 pushes the roller 3 to move upwards in the upward movement process of the lifting table 502, and when the outer circle of the roller 3 is concentric with the arc of the inner wall of the sector ring claw of the clamping part 402, the lifting table 502 stops moving; the electric control system controls the linear motion mechanism (100) to move to drive the sliding frame 200 to move towards the direction close to the rubber roller 2 until the roller 3 is completely positioned outside the clamping part 402; controlling the lifting platform 502 to move downwards to the initial position of the lifting platform 502;

then, the electric control system controls the first motor to rotate reversely, drives the screw 304 to move downwards, simultaneously, the second gear 309 rotates to drive the bracket 311 to rotate reversely, when the bracket 311 rotates reversely by 180 degrees, the first gear 310 is disconnected from the third gear 306, the bracket 311 stops rotating and only moves downwards under the drive of the screw 304, and the bracket 311 drives the grabbing part 400 to move to the grabbing position of the grabbing part 400; at this point, the unloading of a group of rollers 3 is completed, and the above steps are repeated until the unloading of all the rollers 3 is completed.

Pushing the roller conveyor 500 to the assay detection laboratory.

The roller loading and unloading lifting device adopts the grabbing part 400 to be provided with the plurality of clamping parts 402, can realize the grabbing of a plurality of rollers 3 at one time, can adopt a motor to rotate forwards and backwards to realize the lifting, rotating and descending of the grabbing part 400 through the arrangement of the lifting device 300, and has compact structure and low manufacturing cost; the technical scheme that the grabbing part 400 is matched with the linear motion mechanism 100, the sliding frame 200, the lifting device 300 and the roller conveying device 500 is adopted, the arrangement and the unloading of the rollers 3 can be easily realized, the labor intensity of laboratory operators is greatly reduced, the occurrence of injury accidents caused by falling of the rollers 3 in the loading and unloading process is avoided, and the safety risk of equipment operation is greatly reduced; meanwhile, the device has simple structure and low manufacturing cost, and can meet the multiple requirements of low cost and simple operation in a grinding laboratory, reduce the labor intensity and improve the working environment.

The words of front, back, left, right, up and down, etc. in the present invention are only for convenience of describing the structure and do not form a limitation on the technical solution. The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A roller loading and unloading lifting device is characterized by comprising an electric control system; a linear motion mechanism (100); the linear motion mechanism (100) is fixedly connected with a sliding frame (200); the sliding frame (200) is provided with a lifting device (300), and the lifting device (300) is provided with a grabbing part (400); the device also comprises a roller conveying device (500) matched with the lifting device (300);

the lifting device (300) comprises a mounting seat (301) arranged on the sliding frame (200); a worm (302) is rotatably arranged on the mounting seat (301); the worm (302) is connected with a first motor; the worm (302) is meshed with a turbine (303), and the inner wall of the turbine (303) is provided with threads; a screw rod (304) is screwed on the thread on the inner wall of the turbine (303); the lead screw (304) is rotatably connected with a bracket (311), and the bracket (311) is provided with a guide hole; a guide part (312) is arranged in a guide hole of the bracket (311) in a matching way; a first gear (310) is fixedly arranged on the lead screw (304); a second gear (309) is fixedly arranged on the bracket (311), and the second gear (309) and the lead screw (304) are coaxially arranged; the device also comprises a mounting rack (305) and a rotating shaft (308), wherein the mounting rack (305) is fixedly arranged on the sliding rack (200); one end of the rotating shaft (308) is rotatably connected with the top of the sliding frame (200), the other end of the rotating shaft is rotatably connected with the mounting frame (305), and the rotating shaft (308) is vertically arranged; a third gear (306) and a fourth gear (307) are fixedly arranged on the shaft (308), and the third gear (306) and the first gear (310) can be meshed discontinuously; the fourth gear (307) and the second gear (309) can be in intermittent meshing;

the grabbing part (400) comprises a seat plate (401) fixedly connected with the bracket (311); the seat plate (401) is provided with a plurality of clamping parts (402), and the clamping parts (402) comprise a plurality of sector ring claws which are distributed annularly.

2. A drum handling elevator arrangement according to claim 1, c h a r a c t e r i z e d in that the first gear (310) is arranged below the bracket (311); the second gear (309) is fixedly arranged above the bracket (311); the fourth gear (307) is disposed above the third gear (306); the distance between the upper surface of the first gear (310) and the lower surface of the third gear (306) is larger than the distance between the upper surface of the second gear (309) and the lower surface of the fourth gear (307).

3. The drum handling elevator arrangement according to claim 2, wherein said drum conveyor (500) comprises a drum rack (501), said drum rack (501) having a lifting table (502) fixedly disposed thereon; a plurality of positioning shafts (503) are fixedly arranged on the lifting platform (502).

4. A drum handling elevator arrangement according to claim 3, characterised in that the guide (312) is located outside the frame (311) after the third gear (306) has engaged the first gear (310).

5. A drum handling elevator arrangement according to any of claims 1-4, characterised in that the said support (311) comprises a first horizontally disposed support (3111) and a second vertically disposed support (3112), the lower part of the first support (3111) being rotatably connected to the said screw (304); the grabbing part (400) is fixedly arranged on the second support (3112).

6. The drum handling elevator arrangement according to any of claims 1-4, characterized in that the mounting bracket (305) is L-shaped, the mounting bracket (305) comprising a vertically arranged vertical arm and a horizontally arranged horizontal arm, the top of the vertical arm being fixedly connected to the carriage (200); the horizontal arm is rotatably connected with one end of the rotating shaft (308).

7. A drum handling elevator arrangement according to claim 3, characterised in that the drum frame (501) is provided with a positioning and locking part and the frame (1) of the rod mill is provided with a positioning part matching the drum frame (501).

8. A roller handling elevator arrangement according to any of claims 1-4, characterised in that the bottom of the seat plate (401) is comprised of a number of circular arcs.

9. The use method of the roller loading and unloading lifting device based on claim 3 is characterized by comprising the following steps:

the linear motion mechanism (100) moves to drive the sliding frame (200) to move leftwards, so that the grabbing part (400) is driven to move leftwards, when the roller (3) enters the clamping part (402) to set depth, the linear motion mechanism (100) stops moving, and at the moment, an arc where the inner wall of a sector ring claw of the clamping part (402) is located is concentric with the excircle of the roller (3);

then, the first motor rotates positively to drive the worm (302) to rotate, the worm (302) rotates to drive the lead screw (304) to move upwards, and the grabbing part (400) is driven to load the roller (3) to move upwards; after the screw rod (304) moves upwards for a set height, the teeth of the second gear (309) enter the teeth grooves of the fourth gear (307), and the second gear (309) and the fourth gear (307) are only meshed but do not rotate; after the screw rod (304) continues to move upwards for setting the height, the third gear (306) and the first gear (310) start to be meshed, the first gear (310) rotates to drive the third gear (306) to rotate, and further drive the fourth gear (307) to rotate, the fourth gear (307) rotates to drive the second gear (309) to rotate, and the second gear (309) rotates to drive the bracket (311) to rotate; when the support (311) rotates for 180 degrees, the first motor stops rotating, and the grabbing part (400) is located at the highest position;

fixing the roller conveying device (500) at a set position, enabling the linear motion mechanism (100) to move to drive the sliding frame (200) to move above the roller conveying device (500), controlling the lifting platform (502) to move upwards, further enabling the roller (3) to move upwards, and stopping the movement of the lifting platform (502) when the excircle of the roller (3) is concentric with the arc of the inner wall of the sector ring claw of the clamping part (402); controlling the linear motion mechanism (100) to move to drive the sliding frame (200) to move until the roller (3) is completely positioned outside the clamping part (402); controlling the lifting platform (502) to move downwards to the initial position of the lifting platform (502);

then, the first motor rotates reversely, the lead screw (304) is driven to move downwards, the second gear (309) rotates to drive the bracket (311) to rotate reversely, after the bracket (311) rotates reversely for 180 degrees, the first gear (310) is disconnected with the third gear (306), the bracket (311) stops rotating and only moves downwards to a set position under the drive of the lead screw (304), and unloading of a group of rollers (3) is completed;

repeating the steps until the unloading of the roller (3) is completed.