CN111994612A

CN111994612A - Material conveying and transferring structure

Info

Publication number: CN111994612A
Application number: CN202010806243.XA
Authority: CN
Inventors: 冯辉; 华仁祥; 徐文豪
Original assignee: Lingbi Jiugong Precision Steel Pipe Manufacturing Co ltd
Current assignee: Lingbi Jiugong Precision Steel Pipe Manufacturing Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2020-11-27

Abstract

The invention belongs to the technical field of conveying machinery, and particularly relates to a material conveying and transferring structure for shafts or columns, which comprises a rack, wherein a first conveying unit for conveying shaft materials is arranged on the rack, and a material conveying trolley which moves synchronously with the first conveying unit is arranged on the first conveying unit; a transfer unit is arranged at the downstream end of the first conveying unit and comprises a transfer claw, the transfer claw is positioned at a material receiving station in an upper state or a blanking station in a lower state when swinging under the action of a claw driving unit, and the swinging end of the transfer claw is in a hook shape and is used for restraining shaft materials; the transfer unit still includes the blanking platform that is used for placing axle type material, the blanking platform is located the blanking station department of transporting the hook and the blanking platform connect the material position to be higher than the blanking station height of transporting the hook, realizes the automatic transport and the transportation of axle type material, has reduced safe risk, has improved production efficiency simultaneously.

Description

Material conveying and transferring structure

Technical Field

The invention belongs to the technical field of conveying machinery, and particularly relates to a material conveying and transferring structure for shafts or columns.

Background

In an axle or column material production enterprise, after material production is completed, the axle material needs to be conveyed or transported. In small and medium-sized enterprises, manual carrying is generally adopted to save cost, but the manual carrying mode can generate great potential safety hazards on one hand, and is low in efficiency on the other hand, so that the overall benefit of the enterprises is influenced. Particularly, when shaft materials with longer length are conveyed, the characteristics of long length and heavy weight further increase the defects, and the problem needs to be solved urgently.

Disclosure of Invention

The invention aims to provide a material conveying and transferring structure, which realizes automatic conveying and transferring of shaft materials, reduces safety risks and improves production efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme: a material conveying and transferring structure comprises a rack, wherein a first conveying unit for conveying shaft materials is arranged on the rack, and a material conveying trolley which moves synchronously with the first conveying unit is arranged on the first conveying unit; a transfer unit is arranged at the downstream end of the first conveying unit and comprises a transfer claw, the transfer claw is positioned at a material receiving station in an upper state or a blanking station in a lower state when swinging under the action of a claw driving unit, and the swinging end of the transfer claw is in a hook shape and is used for restraining shaft materials; the transfer unit still includes the blanking platform that is used for placing axle type material, the blanking platform is located the blanking station department of transporting the hook and the blanking platform connect the material position to be higher than the blanking station height of transporting the hook.

Preferably, the hook driving unit comprises a hook driving shaft arranged on the rack, the hook driving shaft is rotatably connected with a shaft seat on the rack, the axial direction of the hook driving shaft is perpendicular to the conveying direction of the first conveying unit, and the transfer hooks are arranged on the hook driving shaft at intervals.

Preferably, one end of the transfer hook connected with the hook driving shaft is a material receiving end, and an upper material receiving surface between the material receiving end of the transfer hook and the swing end is in circular arc smooth transition; the inner side of the swing end of the transfer claw is connected with a circular arc matched with the outer wall of the shaft material.

Preferably, the claw driving unit further comprises a driving source for driving the claw driving shaft to rotate, and the driving source is a first hydraulic cylinder; the coupler knuckle driving shaft is sleeved with a swing arm which rotates synchronously, a cylinder body of the first hydraulic cylinder is hinged to the rack, and a telescopic rod of the first hydraulic cylinder is hinged to the swing end of the swing arm.

Preferably, a guide plate is arranged between the downstream end of the first conveying unit and the receiving end of the transfer hook, the receiving end of the guide plate is connected with the downstream end of the first conveying unit, and the blanking end of the guide plate is connected with the receiving end of the transfer hook; the guide plates are arranged at intervals in the axial direction of the hook drive shaft.

Preferably, the first conveying units are arranged on the rack in at least two groups and are parallel to each other, each first conveying unit comprises a first driving chain wheel and a first driven chain wheel which are arranged on the rack and are parallel to each other in the axial direction, chains are wound on the two chain wheels, and a power source is connected to the first driving chain wheel; the conveying trolley is connected to a chain through a pin shaft, and a limiting shaft arranged on the chain is in limiting fit with a limiting groove in the bottom of the conveying trolley; the material conveying trolleys are arranged on the chain at equal intervals, and different groups of material conveying trolleys are synchronously aligned.

Preferably, the top of the material conveying trolley for loading materials is an open groove type, the length direction of the groove is vertical to the conveying direction, and the inclined groove walls on two sides can be attached to the outer walls of the shaft type materials; the bottom of the material conveying trolley is arranged on a chain in a riding type mode, and the width of the trolley bodies on two sides is larger than that of the two chain wheels.

Preferably, the power source comprises a driving shaft which is arranged on the first driving chain wheel in a penetrating manner and is in rotary connection with the frame and a second hydraulic cylinder which drives the driving shaft to rotate, an overrunning clutch is coaxially arranged on the driving shaft, and a lug is connected to the outer ring surface of the overrunning clutch; the cylinder body of the second hydraulic cylinder is hinged to the rack, and the telescopic rod of the second hydraulic cylinder is hinged to the lug; the first driving chain wheels between different groups are all connected in series on the driving shaft, and the first driven chain wheels between different groups are connected in series through driven shafts which are rotatably connected with the rack.

Preferably, the blanking table comprises a base and a receiving groove arranged on the base, and the section of the receiving groove, which is perpendicular to the groove length direction, is arc-shaped; the blanking table and the transfer hook are arranged in a staggered mode.

Preferably, anti-falling conveyer belts are arranged on two sides of the first conveying unit, the conveying direction of the anti-falling conveyer belts is consistent with that of the first conveying unit, and the width between the two anti-falling conveyer belts is smaller than the length of the shaft material; the height of the belt surface of the anti-falling conveying belt is lower than that of the bottom of the conveying trolley. .

The invention has the beneficial effects that:

1) the shaft material is on the material end blanking that comes of first conveying unit to fortune material dolly, fortune material dolly is carried the shaft type material to the low reaches end of first conveying unit along with the motion of first conveying unit, the transport hook in the unit of transporting simultaneously swings to the material station that connects that is in the upper state under the effect of hook drive unit, fortune material dolly continues the motion and unloads shaft type material to the material end that connects of transporting the hook along with first conveying unit, transport hook drives the blanking station that shaft type material swung to the next state under the effect of hook drive unit afterwards. In the in-process of the blanking station of swing to next state, axle type material slides or rolls to the hooked swing end department of transportation hook from the material receiving end of transporting the hook gradually, it continues the swing to transport the hook afterwards, axle type material descends and leans on the blanking bench along with continuing, accomplish the transport and the transportation to an axle type material, analogize with this, the transport and the transportation to axle type material of repetition above-mentioned step, the automation of axle type material transport and transportation in-process has been realized, the safety risk has been reduced, and the production efficiency is improved simultaneously.

2) And a plurality of transfer hooks are arranged on the hook driving shaft at intervals in a penetrating manner to form a support for multi-point positions of shaft materials, so that the shaft materials are more stable along with the transfer hooks from a material receiving station to a blanking station, and the phenomenon that the shaft materials drop is avoided. Adopt the mode of knuckle drive shaft drive transfer knuckle wobbling, mechanical structure is simple, is convenient for manufacturing and later maintenance.

3) The upper portion material receiving surface between the material receiving end of the transfer hook and the swing end is in circular arc smooth transition, so that the shaft material is guaranteed to slide or roll to the smooth and stable of the process of the swing end of the transfer hook from the material receiving end of the transfer hook gradually, and meanwhile, the damage to the outer wall surface of the shaft material due to rubbing and collision in the motion process is avoided.

4) When the telescopic rod of the first hydraulic cylinder is in a retraction state, the hook driving shaft drives the transfer hook to be in a blanking station in a lower state, when the transfer hook is required to receive materials, the first hydraulic cylinder works, the telescopic rod of the first hydraulic cylinder does extension motion, the swing arm and the hook driving shaft are pushed to rotate, and the transfer hook swings from the blanking station in the lower state to the material receiving station in the upper state to receive the materials.

5) The guide plates used for transition are arranged between the downstream end of the first conveying unit and the material receiving end of the transfer hook, so that shaft materials can be smoothly transited to the transfer hook from the material conveying trolley, and the guide plates are arranged at intervals along the axial direction of the hook driving shaft to form multi-point support for the shaft materials.

6) In order to facilitate the material receiving of the material conveying trolley for the shaft materials, the top of the material conveying trolley for loading the materials is an open groove type, the groove length direction is perpendicular to the conveying direction, the groove walls inclined at two sides can be attached to the outer wall of the shaft materials, the open groove type forms limiting fixation for the shaft materials, and the shaft materials are prevented from shaking in the conveying process to cause unnecessary collision damage.

7) The straddle type mounting mode of the material conveying trolley is convenient to mount on a chain, the bottom of the material conveying trolley is mounted on the chain through two pin shafts, a limiting shaft and a limiting groove in the bottom of the material conveying trolley form limiting cooperation, the material conveying trolley is more stable on the chain, the width of the body of each of two sides of the material conveying trolley is larger than the width of two chain wheels, a driving chain wheel and a driven chain wheel can be avoided, and the material conveying trolley is guaranteed to smoothly pass through a chain wheel region along with the rotation of the chain.

8) Because freewheel clutch's existence, driving shaft and lug do not keep the rotational position motionless along with the telescopic link motion of second pneumatic cylinder, when the telescopic link of second pneumatic cylinder is the motion of stretching out once more, continue to promote the lug and promote the driving shaft rotation, when the telescopic link of second pneumatic cylinder is reciprocating motion continuously to realize the continuous rotation of driving shaft.

9) The first driving chain wheel is connected in series on the same driving shaft, and the first driven chain wheel is connected in series on the same driven shaft, so that synchronous motion between different groups of first conveying units is realized, namely, synchronous motion between the material conveying trolleys is realized; in addition, the first driving chain wheels are connected in series on the same driving shaft, so that the driving of all the first driving chain wheels by one second hydraulic cylinder can be realized, and the equipment cost is saved.

Drawings

FIG. 1 is a top view of the present structure;

FIG. 2 is a schematic cross-sectional view taken at C-C of the top view of FIG. 1;

FIG. 3 is a schematic structural diagram of a first conveying unit;

FIG. 4 is a top view of a transfer unit;

FIG. 5 is a side view of the transfer unit;

fig. 6 is a schematic structural view of a transfer claw.

The actual correspondence between each label and the part name of the invention is as follows:

a frame-10; a material conveying trolley-20; a pin-21; a limiting groove-22;

a transfer hook-30; a hook drive shaft-31; a shaft seat-32; a drive source-33;

a swing arm-34;

a blanking table-40; a base-41; a receiving trough-42; a guide plate-50;

a first drive sprocket-61; a drive shaft-611; an overrunning clutch-612; lug-6122;

a driven shaft-613; a first driven sprocket-62;

a chain-63; a limit shaft-631; a second hydraulic cylinder 64; and (5) an anti-drop conveyer belt-70.

Detailed Description

For the purposes of promoting an understanding, reference will now be made in detail to the present preferred embodiment of the invention.

A material conveying and transferring structure comprises a rack 10, wherein a first conveying unit for conveying shaft materials A is arranged on the rack 10, and a material conveying trolley 20 which moves synchronously with the first conveying unit is arranged on the first conveying unit; a transfer unit is arranged at the downstream end of the first conveying unit and comprises a transfer hook claw 30, the transfer hook claw 30 is positioned at a material receiving station in an upper state or a blanking station in a lower state when swinging under the action of a hook claw driving unit, and the swinging end of the transfer hook claw 30 is in a hook shape and is used for restraining the shaft material A; the transfer unit still includes the blanking platform 40 that is used for placing axle type material A, blanking platform 40 is located the blanking station department of transporting the hook 30 and the material receiving position of blanking platform 40 is higher than the blanking station height of transporting the hook 30. The shaft material A manufactured in the previous procedure is blanked to the material transporting trolley 20 at the material receiving end of the first conveying unit, the material transporting trolley 20 conveys the shaft material A to the downstream end of the first conveying unit along with the movement of the first conveying unit, meanwhile, the transporting hook 30 in the transporting unit swings to the material receiving station in the upper state under the action of the hook driving unit, the material transporting trolley 20 continues to move along with the first conveying unit and unloads the shaft material A to the material receiving end of the transporting hook 30, and then the transporting hook 30 drives the shaft material A to swing to the blanking station in the lower state under the action of the hook driving unit. In the process of the blanking station which swings to the lower position, the shaft material A gradually slides or rolls from the receiving end of the transfer hook 30 to the hooked swing end of the transfer hook 30, then the transfer hook 30 continuously swings, the shaft material A descends along with the continuation and leans on the blanking table 40, the conveying and the transferring of the shaft material A are completed, the steps are repeated to convey and transfer the shaft material A, the automation of the conveying and transferring processes of the shaft material A is realized, the safety risk is reduced, and meanwhile, the production efficiency is improved.

The hook drive unit is including setting up the hook drive shaft 31 in frame 10, hook drive shaft 31 constitutes to rotate with axle bed 32 in the frame 10 and is connected, the axial of hook drive shaft 31 is perpendicular with the direction of delivery of first conveying unit, and a plurality of transport hook 30 intervals are worn to put on hook drive shaft 31, form the brace to shaft class material A to the multiple spot position, make shaft class material A along with transporting hook 30 from connecing the material station to the in-process of blanking station more stable, avoid taking place axle class material A phenomenon that drops. Adopt the mode of knuckle drive shaft 31 drive transfer knuckle 30 wobbling, mechanical structure is simple, is convenient for manufacturing and later maintenance. In addition, in this embodiment, the maximum swing angle of the transfer hook 30 is 80 °, and the user can select a suitable maximum swing angle according to the actual situation, and certainly the swing angle should not exceed 90 °, so as to prevent the locking phenomenon.

The one end that transports claw 30 and claw drive shaft 31 are connected is for connecing the material end, and the material end that transports claw 30 connects the material face to the upper portion between the swing end and is circular arc smooth transition, guarantees that axle class material A slides or rolls to the level and smooth stability of transporting claw 30 swing end process from the material end that connects of transporting claw 30 gradually, avoids the motion process to take place to wipe simultaneously, causes the damage of axle class material A outer wall. In addition, the inner side material surface of the swing end of the transfer hook claw 30 is an arc matched with the outer wall of the shaft material A, and the shaft material A moves to the swing end of the transfer hook claw 30 and then is matched with the arc of the inner side surface of the transfer hook claw in a fitting mode to form clamping fit.

As shown in the figure, the gripper driving unit further includes a driving source 33 for driving the gripper driving shaft 31 to rotate, the driving source 33 being a first hydraulic cylinder; the knuckle driving shaft 31 is sleeved with a swing arm 34 which rotates synchronously, the cylinder body of the first hydraulic cylinder is hinged to the rack 10, and the telescopic rod of the first hydraulic cylinder is hinged to the swing end of the swing arm 34. When the telescopic rod of the first hydraulic cylinder is in a retraction state, the hook driving shaft 31 drives the transfer hook 30 to be in a blanking station in a lower state, and when the transfer hook 30 needs to receive materials, the first hydraulic cylinder works, the telescopic rod of the first hydraulic cylinder does an extension motion to push the swing arm 34 and the hook driving shaft 31 to rotate, so that the transfer hook 30 swings from the blanking station in the lower state to the material receiving station in the upper state to receive the materials. After the material receiving is completed, the telescopic rod of the first hydraulic cylinder retracts, and at the moment, the swing arm 34 and the claw driving shaft 31 are driven to rotate, so that the transfer claw 30 swings from the material receiving station in the upper state to the blanking station in the lower state, and the shaft material A is placed on the blanking table 40 to wait for the next process in the moving process.

In order to enable the shaft-like material a to smoothly transit from the material conveying trolley 20 to the transfer hook 30, a guide plate 50 for transition is arranged between the downstream end of the first conveying unit and the material receiving end of the transfer hook 30, the material receiving end of the guide plate 50 is connected with the downstream end of the first conveying unit, the material discharging end of the guide plate 50 is connected with the material receiving end of the transfer hook 30, and meanwhile, the guide plate 50 is arranged on the rack 10; the guide plates 50 are arranged at intervals along the axial direction of the claw drive shaft 31, and form multi-point support for the shaft material A.

The first conveying units are at least arranged in two groups on the rack 10 and are parallel to each other, each first conveying unit comprises a first driving chain wheel 61 and a first driven chain wheel 62 which are arranged on the rack 10 and are parallel to each other in the axial direction, chains 63 are wound on the two chain wheels, and a power source is connected to the first driving chain wheel 61; the material conveying trolley 20 is connected to the chain 63 through a pin shaft 21, and a limiting shaft 631 arranged on the chain 63 and a limiting groove 22 at the bottom of the material conveying trolley 20 form limiting fit, so that the material conveying trolley 20 can be conveniently positioned during installation; the material transporting trolleys 20 are arranged on the chain 63 at equal intervals, and the material transporting trolleys 20 of different groups are arranged in a synchronous alignment mode, so that the same row of material transporting trolleys 20 can convey the same shaft material A, and the crossing is avoided.

In order to facilitate the material receiving of the material transporting trolley 20 for the shaft material A, the top of the material transporting trolley 20 for loading the material is an open groove type, the groove length direction is perpendicular to the conveying direction, the groove walls inclined at two sides can be attached to the outer wall of the shaft material A, the open groove type forms limiting fixation for the shaft material A, and unnecessary collision damage caused by shaking of the shaft material A in the conveying process is avoided.

The bottom of the material conveying trolley 20 is arranged on the chain 63 in a straddling mode, and the widths of the trolley bodies on the two sides are larger than those of the two chain wheels. The straddle type mounting means of fortune material dolly 20 is convenient for the installation on chain 63, install the bottom of fortune material dolly 20 on chain 63 through two round pin axles 21, spacing axle 631 constitutes spacing cooperation with the spacing groove 22 of fortune material dolly 20 bottom, it is more stable on chain 63 to make fortune material dolly 20, the automobile body width of fortune material dolly 20 both sides all is greater than the width of two sprockets, can dodge first drive sprocket 61 and first driven sprocket 62, it is regional to guarantee that fortune material dolly 20 rotates the smooth sprocket that passes through of in-process along with chain 63.

The power source comprises a driving shaft 611 which penetrates through the first driving sprocket 61 and is in rotary connection with the frame 10 and a second hydraulic cylinder 64 which drives the driving shaft 611 to rotate, an overrunning clutch 612 is coaxially arranged on the driving shaft 611, and a lug 6122 is connected to the outer annular surface of the overrunning clutch 612. The cylinder body of the second hydraulic cylinder 64 is hinged to the frame 10, and the telescopic rod of the second hydraulic cylinder 64 is hinged to the lug 6122. When the telescopic rod of the second hydraulic cylinder 64 extends, the driving shaft 611 is pushed to rotate by the lug 6122, and then the telescopic rod of the second hydraulic cylinder 64 retracts, because of the existence of the overrunning clutch 612, the driving shaft 611 and the lug 6122 do not move along with the telescopic rod of the second hydraulic cylinder 64, and the rotating position is kept still, when the telescopic rod of the second hydraulic cylinder 64 extends again, the lug 6122 is continuously pushed to push the driving shaft 611 to rotate, and when the telescopic rod of the second hydraulic cylinder 64 continuously reciprocates, the driving shaft 611 continuously rotates.

In addition, the first driving sprockets 61 between different groups are all arranged on the driving shaft 611 in series, and the first driven sprockets 62 between different groups are connected in series through the driven shaft 613 which is rotatably connected with the frame 10. The first driving sprocket 61 is connected in series to the same driving shaft 611, and the first driven sprocket 62 is connected in series to the same driven shaft 613, so that the synchronous movement between different groups of first conveying units, that is, the synchronous movement between the material transporting trolleys 20 is realized. In addition, the first driving chain wheels 61 are connected in series on the same driving shaft 611, so that the driving of all the first driving chain wheels 61 by one second hydraulic cylinder 64 can be realized, and the equipment cost is saved.

The blanking table 40 comprises a base 41 and a material receiving groove 42 arranged on the base 41, and the section of the material receiving groove 42 vertical to the groove length direction is arc-shaped; the blanking table 40 and the transfer hook claw 30 are arranged in a staggered mode, and movement interference between the blanking table and the transfer hook claw is avoided.

Anti-falling conveyer belts 70 are arranged on two sides of the first conveyer unit, the conveying direction of the anti-falling conveyer belts 70 is consistent with that of the first conveyer unit, and the width between the two anti-falling conveyer belts 70 is smaller than the length of the shaft material A; the height of the belt surface of the anti-falling conveying belt 70 is lower than the height of the groove bottom of the material conveying trolley 20. When there is axle type material A to drop from fortune material dolly 20, anticreep conveyer belt 70 can support the axle type material A that drops, avoids axle type material A directly to drop subaerial, also can produce the damage to axle type material A when causing the safety risk.

In addition, as shown in the figure, the first conveying unit is located one side of the transfer unit, in practical application, in order to ensure the transfer of the shaft-like material a between multiple stations, the second conveying unit can be symmetrically arranged on the other side of the transfer unit relative to the first conveying unit, the structure of the second conveying unit is similar to that of the first conveying unit, after the shaft-like material a is placed in the material receiving groove 42 on the blanking table 40 by the transfer hook claw 30 in the first conveying unit, the shaft-like material a is transferred to the second material transferring trolley 20a in the second conveying unit by the second transfer hook claw 30a in the second conveying unit from the material receiving groove 42, and the transfer of the shaft-like material a between different stations is completed. Wherein the guiding direction of the second guide plate 50a in the second conveying unit is from the second transfer hook 30a to the second cart 20a, the height of the second driving shaft 611a is lower than the height of the driving shaft 611, and the height of the top of the second driving sprocket 61a is lower than the height of the first driving sprocket 61.

Claims

1. A material is carried and is transported structure, includes frame (10), its characterized in that: a first conveying unit for conveying the shaft materials (A) is arranged on the rack (10), and a conveying trolley (20) moving synchronously with the first conveying unit is arranged on the first conveying unit; a transfer unit is arranged at the downstream end of the first conveying unit and comprises a transfer hook claw (30), the transfer hook claw (30) is positioned at a material receiving station in an upper state or a blanking station in a lower state when swinging under the action of a hook claw driving unit, and the swinging end of the transfer hook claw (30) is in a hook shape and is used for restraining shaft materials (A); the transfer unit still includes blanking platform (40) that is used for placing axle type material (A), blanking platform (40) are located the blanking station department of transporting hook (30) and the material receiving position of blanking platform (40) is higher than the blanking station height of transporting hook (30).

2. A material conveying and transfer structure as in claim 1, wherein: the hook driving unit comprises a hook driving shaft (31) arranged on the rack (10), the hook driving shaft (31) is rotatably connected with a shaft seat (32) on the rack (10), the axial direction of the hook driving shaft (31) is perpendicular to the conveying direction of the first conveying unit, and a plurality of transfer hooks (30) penetrate through the hook driving shaft (31) at intervals.

3. A material conveying and transfer structure as in claim 2, wherein: one end of the transfer hook claw (30) connected with the hook claw driving shaft (31) is a material receiving end, and an upper material receiving surface between the material receiving end and the swinging end of the transfer hook claw (30) is in arc smooth transition; the inner side of the swing end of the transfer hook claw (30) is provided with a circular arc matched with the outer wall of the shaft material (A).

4. A material conveying and transfer structure as in claim 2, wherein: the claw driving unit further comprises a driving source (33) for driving the claw driving shaft (31) to rotate, wherein the driving source (33) is a first hydraulic cylinder; the synchronous rotating swing arm (34) is sleeved on the claw driving shaft (31), the cylinder body of the first hydraulic cylinder is hinged to the rack (10), and the telescopic rod of the first hydraulic cylinder is hinged to the swing end of the swing arm (34).

5. A material conveying and transfer structure as in claim 3, wherein: a guide plate (50) is arranged between the downstream end of the first conveying unit and the receiving end of the transfer hook claw (30), the receiving end of the guide plate (50) is connected with the downstream end of the first conveying unit, and the blanking end of the guide plate (50) is connected with the receiving end of the transfer hook claw (30); the guide plates (50) are arranged at intervals in the axial direction of the hook drive shaft (31).

6. A material conveying and transfer structure as in claim 1, wherein: the first conveying units are at least arranged in two groups on the rack (10) and are parallel to each other, each first conveying unit comprises a first driving chain wheel (61) and a first driven chain wheel (62), the first driving chain wheel (61) and the first driven chain wheel (62) are arranged on the rack (10) and are parallel to each other in the axial direction, chains (63) are wound on the two chain wheels, and a power source is connected to the first driving chain wheel (61); the conveying trolley (20) is connected to a chain (63) through a pin shaft (21), and a limiting shaft (631) arranged on the chain (63) is in limiting fit with a limiting groove (21) at the bottom of the conveying trolley (20); the material conveying trolleys (20) are arranged on the chain (63) at equal intervals, and different groups of material conveying trolleys (20) are synchronously aligned.

7. A material conveying and transfer structure as in claim 6, wherein: the top of the material conveying trolley (20) for loading materials is an open groove type, the length direction of the groove is vertical to the conveying direction, and the inclined groove walls at two sides can be attached to the outer wall of the shaft material (A); the chassis of the material conveying trolley (20) is arranged on a chain (63) in a riding type manner, and the width of the trolley bodies on two sides is larger than that of the two chain wheels.

8. A material conveying and transfer structure as in claim 6, wherein: the power source comprises a driving shaft (611) which penetrates through the first driving chain wheel (61) and is in rotary connection with the rack (10) and a second hydraulic cylinder (64) which drives the driving shaft (611) to rotate, an overrunning clutch (612) is coaxially arranged on the driving shaft (611), and a lug (6122) is connected to the outer annular surface of the overrunning clutch (612); the cylinder body of the second hydraulic cylinder (64) is hinged to the frame (10), and the telescopic rod of the second hydraulic cylinder (64) is hinged to the lug (6122); the first driving chain wheels (61) between different groups are all arranged on the driving shaft (611) in series, and the first driven chain wheels (62) between different groups are connected in series through driven shafts (613) which are rotationally connected with the machine frame (10).

9. A material conveying and transfer structure as in claim 1, wherein: the blanking table (40) comprises a base (41) and a material receiving groove (42) arranged on the base (41), and the section of the material receiving groove (42) vertical to the groove length direction is arc-shaped; the blanking table (40) and the transfer claw (30) are arranged in a staggered mode.

10. A material conveying and transfer structure as in claim 6, wherein: anti-falling conveyer belts (70) are arranged on two sides of the first conveying unit, the conveying direction of the anti-falling conveyer belts (70) is consistent with that of the first conveying unit, and the width between the two anti-falling conveyer belts (70) is smaller than the length of the shaft material (A); the height of the belt surface of the anti-falling conveying belt (70) is lower than the height of the groove bottom of the material conveying trolley (20).