CN211811664U

CN211811664U - Automatic feeding device

Info

Publication number: CN211811664U
Application number: CN202020105548.3U
Authority: CN
Inventors: 杜军岭; 江保军; 翟家海; 吕雷; 鲍景明
Original assignee: China Nuclear Power Engineering Co Ltd
Current assignee: China Nuclear Power Engineering Co Ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-10-30
Anticipated expiration: 2030-01-17

Abstract

The utility model provides an automatic feeding device, it includes: the transfer device, the longitudinal transmission device and the transport trolley are arranged on the conveying device; the transfer device is arranged above the longitudinal transmission device, and the longitudinal transmission device is provided with a station to be transferred and a station to be loaded; the longitudinal transmission device is used for receiving the rod-shaped workpieces transmitted from the previous procedure one by one at a station to be fed; the transfer device is used for moving to the position above the station to be fed, descending once and acquiring the rod-shaped workpiece when the longitudinal transmission device receives one rod-shaped workpiece, then ascending to wait for the next rod-shaped workpiece to be received until a preset number of rod-shaped workpieces are acquired, and then moving to the position above the station to be transferred; after the transport trolley enters the station to be transported, all the rod-shaped workpieces with the preset number are placed on the transport trolley at one time. The utility model discloses the rod-like work piece that last process transmission came is received to the root by the root, and after acquireing the rod-like work piece of predetermineeing quantity, disposable whole places on the travelling bogie again to the automatic feeding operation of rod-like work piece has been realized.

Description

Automatic feeding device

Technical Field

The utility model relates to a nuclear fuel production technical field, concretely relates to automatic feeding device, in particular to fuel rod automatic feeding device.

Background

In the nuclear fuel field, in the fuel rod course of working, need carry out helium leak hunting operation to the fuel rod, helium leak hunting operation is fuel rod batch operation, but the fuel rod supplied fuel is single supplied fuel, send the fuel rod batch to the fuel rod dolly again after the supplied fuel accumulation reaches a certain quantity, carry out helium leak hunting operation.

However, before helium leak detection operation, the mode of receiving fuel rod incoming materials is manual, so that the efficiency is low, and the production requirement is difficult to meet.

Therefore, there is a need in the art to design an automatic fuel rod feeding device with reliable structure to solve the above technical problems and meet the production requirements.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve, at least in part, the technical problems occurring in the prior art.

Solve the utility model discloses the technical scheme that technical problem adopted is:

the utility model provides an automatic feeding device, it includes: the transfer device, the longitudinal transmission device and the transport trolley are arranged on the conveying device; the transfer device is arranged above the longitudinal transmission device, and the longitudinal transmission device is provided with a station to be transferred and a station to be loaded; wherein the content of the first and second substances,

the longitudinal transmission device is used for receiving the rod-shaped workpieces transmitted from the previous procedure one by one at the position of the station to be fed;

the transfer device is used for moving to the position above the station to be loaded, descending once and acquiring a rod-shaped workpiece when the longitudinal transmission device receives one rod-shaped workpiece, then ascending to wait for the next rod-shaped workpiece to be received until a preset number of rod-shaped workpieces are acquired, and then moving to the position above the station to be transferred; and after the transport trolley enters the station to be transported, all the rod-shaped workpieces with the preset number are placed on the transport trolley at one time.

Optionally, the longitudinal transmission device includes: the station to be transported and the station to be loaded are positioned on the lower bracket; the workpiece transfer mechanism is arranged at a position of a material-to-be-loaded station on the lower support and is used for receiving the rod-shaped workpieces transferred in the previous process one by one.

Optionally, the workpiece transfer mechanism comprises: the device comprises a motor, a conveyor belt, a plurality of rollers and a plurality of roller brackets; each roller corresponds to one roller bracket and is connected with the corresponding roller bracket, the rollers are arranged at intervals in a preset distance along a straight line, and the middle of the peripheral surface of each roller is internally recessed; the conveying belt is tensioned on each roller; the roller bracket and the motor are arranged on the lower bracket; the motor is connected with the conveyor belt and used for driving the rollers to synchronously rotate through the conveyor belt, so that the rod-shaped workpieces transmitted from the previous process are received one by utilizing the depressions of the rollers.

Optionally, the longitudinal transmission device further includes: the trolley guide rail is arranged at a station to be transported on the lower support; the transport trolley can enter and leave the station to be transported along the trolley guide rail.

Optionally, the transfer device comprises: the device comprises a horizontal moving mechanism, a vertical moving mechanism and a plurality of grippers connected with the horizontal moving mechanism and the vertical moving mechanism; wherein the content of the first and second substances,

the grippers are spaced at preset distances and arranged along a straight line; the gripper is of an L-shaped structure and comprises a longitudinal arm and a transverse arm connected with the longitudinal arm, and a rod-shaped workpiece can be placed on the transverse arm; the top end of the longitudinal arm is connected with the horizontal moving mechanism and the vertical moving mechanism, the bottom end of the longitudinal arm is connected with one end of the transverse arm, the other end of the transverse arm is provided with a stop block, and the stop block is slightly inclined upwards relative to one end of the transverse arm;

the horizontal moving mechanism is used for driving all the grippers to move back and forth along the horizontal direction;

and the vertical moving mechanism is used for driving all the grippers to move up and down along the vertical direction.

Optionally, the horizontal movement mechanism comprises: the upper support, the linear transmission mechanism, the linear guide rail and the moving beam; the linear transmission mechanism is arranged on the upper support, and the linear guide rail is horizontally arranged at the bottom of the upper support; the moving beam is arranged below the linear guide rail, is respectively connected with the linear transmission mechanism and the gripper, and can move back and forth along the linear guide rail under the driving of the linear transmission mechanism so as to drive the gripper to move back and forth along the horizontal direction.

Optionally, the upper support is of a rectangular frame structure and comprises four side frames; the linear transmission mechanisms are arranged on two opposite side frames; two linear guide rails are adopted and are respectively arranged at the bottoms of the other two opposite frames; the movable beam is arranged below the two linear guide rails.

Optionally, the vertical moving mechanism comprises: a lifting mechanism and a lifting beam; the lifting beam is arranged below the moving beam, and the hand grip is arranged at the bottom of the lifting beam; the lifting mechanism is arranged on the movable beam, connected with the lifting beam and used for driving the lifting beam to do lifting motion, so that the hand grab is driven to move up and down along the vertical direction.

Optionally, the vertical moving mechanism further comprises: and the guide mechanism is connected with the lifting beam and used for guiding when the lifting beam does lifting motion.

Optionally, the guide mechanism comprises: the guide device comprises a plurality of guide shafts and a plurality of linear bearings, wherein each guide shaft corresponds to one linear bearing; the bottom of the guide shaft is fixed on the lifting beam, and the top of the guide shaft penetrates through the movable beam; the linear bearings are sleeved on the corresponding guide shafts, and the bottoms of the linear bearings are fixed on the movable beam.

Optionally, the bar-shaped workpiece is a fuel rod, the transfer device and the longitudinal transmission device are both arranged in the glove box, the transfer device is fixed to the top of the glove box, and the longitudinal transmission device is fixed to the bottom of the glove box.

Has the advantages that:

according to the utility model provides an automatic feeding device, transfer device move earlier to treating the material loading station to with indulge to pass the device and cooperate, acquire one by one and pass a single bar-shaped work piece that the device received, move again to treating the transportation station after obtaining the bar-shaped work piece of predetermineeing quantity, then once only whole placing bar-shaped work piece on the travelling bogie, thereby realized the automatic feeding operation of bar-shaped work piece, and satisfied the production requirement. Moreover, the automatic feeding device has a simple and reliable structure, can meet the automatic feeding requirement of the rod-shaped workpiece, and is convenient for equipment inspection and maintenance.

Drawings

Fig. 1 is an axial side view of an automatic fuel rod feeding device according to an embodiment of the present invention;

fig. 2 is a front view of an automatic fuel rod feeding device provided in an embodiment of the present invention;

fig. 3 is a left side view of an automatic fuel rod feeding device provided in an embodiment of the present invention;

fig. 4 is a schematic view of an operating state of the automatic fuel rod feeding device according to the embodiment of the present invention;

fig. 5 is a schematic view of another working state of the automatic fuel rod feeding device according to the embodiment of the present invention.

In the figure: i-a fuel rod transfer device; II, a fuel rod longitudinal transmission device; III-a fuel rod trolley; 1-a spiral elevator; 2-linear electric cylinder; 3-upper support; 4-moving the beam; 5-linear guide rail; 6-linear bearings; 7-a guide shaft; 8-lifting the beam; 9-a gripper; 10-circular band; 11-a roller; 12-a roller bracket; 13-a motor; 14-a lower support; 15-trolley guide rails; and 16-fuel rods.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by various orientation terms is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.

The embodiment of the utility model provides an automatic feeding device for single of bar-shaped work piece is prepared material and batch material loading. The rod-shaped workpiece can be a fuel rod, and in the following embodiments, the specific structure of the automatic feeding device is described in detail by taking the fuel rod as an example, that is, the automatic feeding device for the fuel rod is provided. Of course, the rod-shaped workpiece is not limited to a fuel rod, and other types of rod-shaped workpieces should be within the scope of the present invention.

As shown in fig. 1 to 3, the fuel rod automatic loading device includes: fuel rod transfer device I, fuel rod indulge and pass device II and fuel rod travelling bogie III.

The fuel rod transport trolley III can bear the fuel rods 16; the fuel rod transfer device I is arranged above the fuel rod longitudinal transmission device II, and the fuel rod longitudinal transmission device II is provided with a station to be transferred and a station to be loaded.

The fuel rod longitudinal transmission device II is used for receiving the fuel rods 16 transferred from the previous process one by one at the to-be-loaded station.

The fuel rod transfer device I is used for moving to the position above the station to be loaded, descending once and obtaining a fuel rod when the fuel rod longitudinal transfer device II receives one fuel rod, then ascending to wait for the next fuel rod to be received until a preset number of fuel rods 16 are obtained, and then moving to the position above the station to be transferred; after the fuel rod transport trolley III enters the station to be transported, all the fuel rods 16 with the preset number are placed on the fuel rod transport trolley III at one time.

In this embodiment, fuel rod transfer device moves earlier and waits to expect the material loading station to indulge with the fuel rod and pass the device and cooperate, acquire gradually and indulge single fuel rod that passes the device and receive by the fuel rod, move again to waiting to transport the station after acquireing the fuel rod of predetermineeing quantity, then once only all place the fuel rod on fuel rod travelling bogie, thereby realized the automatic feeding operation of fuel rod, and satisfied the production requirement. Moreover, the automatic feeding device has a simple and reliable structure, can meet the automatic feeding requirement of the fuel rod, and is convenient for equipment inspection and maintenance.

Specifically, the fuel rod longitudinal transmission device II includes: a lower support 14 and a workpiece transfer mechanism.

Wherein the station to be transported and the station to be loaded are located on the lower support 14.

The workpiece transfer mechanism is disposed at a loading station on the lower rack 14 for receiving the fuel rods 16 transferred from the previous process one by one.

As shown in fig. 1 to 3, the work transfer mechanism includes: motor 13, conveyer belt, a plurality of gyro wheel 11 and a plurality of gyro wheel support 12. In this embodiment, the conveyor belt is a circular belt 10, and of course, other types of conveyor belts may be used, which is not limited by the present invention. The number of the rollers 11 and the roller brackets 12 may be set by those skilled in the art according to the length of the fuel rods, and although only five rollers and five roller brackets are shown in the drawings, the present invention is not limited thereto, and a greater or lesser number of rollers and roller brackets should be within the scope of the present invention.

Each roller 11 corresponds to one roller bracket 12 and is connected with the corresponding roller bracket 12; the rollers 11 are spaced apart by a predetermined distance and arranged in a straight line, that is, in a length direction of the fuel rod 16 shown in fig. 1; the middle of the circumferential surface of the roller 11 is recessed inward for carrying the fuel rod 16.

The circular belt 10 is tensioned over the rollers 11 so that the rollers 11 are connected in series by the circular belt 10, each roller 11 being powered.

The roller bracket 12 and the motor 13 are provided (fixed) on the lower bracket 14.

The motor 13 is connected to the circular belt 10, and is configured to drive the rollers 11 to rotate synchronously through the circular belt 10, so as to receive the fuel rods 16 transferred from the previous process one by using the depressions of the rollers, and to allow the fuel rods 16 to move longitudinally under the driving of the rollers 11 until a predetermined number of fuel rods 16 are received. Since a single fuel rod is light in weight, a single motor 13 can be used for driving.

In some embodiments, the fuel rod stringer II further comprises: a trolley guide rail 15 which is arranged (fixed) at a station to be transferred on the lower support 14; the fuel rod transport trolley III can be moved back and forth along the trolley guide rails 15 to enter and leave the station to be transported.

Specifically, the fuel rod transfer device I includes: a horizontal moving mechanism, a vertical moving mechanism and a plurality of grippers 9 connected with the horizontal moving mechanism and the vertical moving mechanism. The number of grippers 9 may be set by a person skilled in the art according to the length and diameter of the fuel rod, and although only three grippers are shown in the figures, the present invention is not limited thereto, and a greater or lesser number of grippers is also within the scope of the present invention.

Wherein the grippers 9 are spaced apart by a predetermined distance and arranged in a straight line, i.e., in a length direction of the fuel rod 16 shown in fig. 1. As shown in fig. 1, the gripper 9 is of an L-shaped structure and comprises a longitudinal arm and a cross arm connected with the longitudinal arm, and a fuel rod 16 can be placed on the cross arm; the top end of the longitudinal arm is connected with the horizontal moving mechanism and the vertical moving mechanism, the bottom end of the longitudinal arm is connected with one end of the cross arm, the other end of the cross arm is provided with a stop, the stop is slightly inclined upwards relative to one end of the cross arm, so that the cross arm of the gripper has a certain inclination angle, the fuel rod can roll inwards along the cross arm, namely, each time the gripper 9 acquires one fuel rod from each roller 11, the fuel rod rolls inwards along the cross arm, and the rolling direction is the direction from the free end of the cross arm (namely, the other end of the cross arm) to the non-free end of the cross arm (namely, one end of the cross arm), so that a plurality of fuel rods arranged side. Moreover, the gripper 9 and the roller 11 are arranged in a staggered manner so as not to interfere with the roller 11 when the gripper 9 moves up and down.

The horizontal moving mechanism is used for driving all the grippers to move back and forth along the horizontal direction.

The vertical moving mechanism is used for driving all the grippers to move up and down along the vertical direction.

In this embodiment, the gripper 9 is driven by the horizontal moving mechanism to move to a position above the to-be-fed station, and then driven by the vertical moving mechanism to repeatedly perform lifting motion at the to-be-fed station, the lowest point of the lifting motion needs to be lower than the roller, that is, the cross arm of the gripper 9 needs to be lowered below each roller, and each time the gripper 9 is lifted, one fuel rod is obtained from the roller 11 until a preset number of fuel rods are obtained. Then, the gripper 9 is driven by the horizontal moving mechanism to move to the position above the to-be-transported station, and then driven by the vertical moving mechanism to place all the acquired fuel rods with the preset number on the fuel rod transport trolley III at one time. And finally, the gripper 9 is reset under the driving of the horizontal moving mechanism and the vertical moving mechanism to wait for the next work instruction.

Moreover, because the free end of the cross arm (namely the other end of the cross arm) is provided with the stop block, when the grab drives the acquired fuel rod to repeatedly do lifting motion, the fuel rod can be prevented from falling from the free end of the cross arm.

As shown in fig. 1 to 3, the horizontal movement mechanism includes: the upper support 3, the linear transmission mechanism, the linear guide rail 5 and the movable beam 4. In this embodiment, linear transmission mechanism adopts sharp electric cylinder 2, of course, also can adopt other types of linear transmission mechanism, the utility model discloses do not do the restriction to this.

Wherein, the linear electric cylinder 2 is arranged on the upper bracket 3; the linear guide 5 is horizontally arranged at the bottom of the upper bracket 3.

The movable beam 4 is arranged below the linear guide rail 5 and is respectively connected with the linear electric cylinder 2 and the gripper 9, namely the movable beam 4 is connected with the upper bracket 3 through the linear guide rail 5, and the linear electric cylinder 2 is also connected with the upper bracket 3; the movable beam 4 can move back and forth along the linear guide rail 5 under the driving of the linear electric cylinder 2, so that the gripper 9 is driven to move back and forth along the horizontal direction. It can be seen that horizontal drive is provided by the linear electric cylinder 2 to drive the mobile beam 4 back and forth in the horizontal direction and guided by the linear guide 5.

In some embodiments, the upper support 3 is a rectangular frame structure, including four side frames; the linear electric cylinders 2 are arranged on two opposite frames; two linear guide rails 5 are adopted and are respectively arranged at the bottoms of the other two opposite frames; the travelling beam 4 is arranged below the two linear guides 5.

As shown in fig. 1 to 3, the vertical movement mechanism includes: a lifting mechanism and a lifting beam 8. In this embodiment, the lifting mechanism adopts the spiral lifter 1, and of course, other types of lifting mechanisms can be adopted, and the present invention does not limit this.

Wherein, the lifting beam 8 is arranged below the shifting beam 4, and the gripper 9 is arranged (fixed) at the bottom of the lifting beam 8. The spiral lifter 1 is arranged (fixed) on the movable beam 4 and is connected with the lifting beam 8, namely the lifting beam 8 is connected with the movable beam 4 through the spiral lifter 1; the spiral elevator 1 is used for driving the lifting beam 8 to do lifting motion, so as to drive the gripper 9 to move up and down along the vertical direction. It can be seen that vertical drive is provided by the screw lift 1 to drive the lifting beam 8 up and down in the vertical direction. And, the straight line electric cylinder 2 is cooperated with the spiral elevator 1, and the up-down and front-back movement of the gripper 9 is realized.

In the fuel rod transfer device I of the embodiment, the linear electric cylinder 2 and the spiral elevator 1 drive the gripper 9 to move, the fuel rods are transferred to the gripper 9 one by one from the rollers 11 through repeated up-and-down movement of the gripper 9, so that material preparation is realized, after all the material preparation is completed (namely, after the gripper 9 acquires a preset number of fuel rods), the prepared fuel rods are all transferred (namely, integrally transferred) to the fuel rod transport trolley III at one time through the gripper 9, and thus, the material preparation and feeding operation of the fuel rods is completed.

In some embodiments, the vertical movement mechanism further comprises: and the guide mechanism is connected with the lifting beam 8 and used for guiding when the lifting beam 8 performs lifting motion.

As shown in fig. 1 to 3, the guide mechanism includes: a plurality of guide shafts 7 and a plurality of linear bearings 6, and each guide shaft 7 corresponds to one linear bearing 6. The number of guide shafts and linear bearings may be set by a person skilled in the art according to the size of the lifting beam, and although only two guide shafts and two linear bearings are shown in the figures, the present invention is not limited thereto, and a greater or lesser number of guide shafts and linear bearings are also within the scope of the present invention.

Wherein the guide shaft 7 is fixed at the bottom to the lifting beam 8 and at the top through the transfer beam 4. The linear bearings 6 are sleeved on the corresponding guide shafts 7, and the bottoms of the linear bearings are fixed on the movable beam 4, namely, the lifting beam 8 is also connected with the movable beam 4 through the linear bearings 6 and the guide shafts 7.

In this embodiment, when the lifting beam 8 is driven by the screw elevator 1 to perform a lifting motion, the guide shaft 7 is engaged with the linear bearing 6 to guide the vertical movement of the lifting beam 8, thereby guiding the vertical movement of the gripper 9.

In practical application, the fuel rod transfer device I and the fuel rod are longitudinally transmitted to the device II and are all arranged in the glove box, the fuel rod transfer device I is fixed to the top of the glove box, and the fuel rod is longitudinally transmitted to the device II and is fixed to the bottom of the glove box.

The working principle of the automatic fuel rod feeding device according to the present embodiment is described in detail below with reference to fig. 4 and 5:

in an initial state of the equipment, the gripper 9 of the fuel rod transfer device I moves below the roller 11 under the driving of the linear electric cylinder 2 and the spiral lifter 1, when the fuel rod 16 is conveyed to a station to be loaded through the roller 11, the spiral lifter 1 drives the gripper 9 to lift, the fuel rod 16 is transferred to the gripper 9, and the fuel rod automatically rolls to the inner side (the rolling direction is shown as B direction in fig. 4) due to a certain inclination angle of a cross arm of the gripper 9; and then the spiral elevator 1 drives the gripper 9 to descend below the roller 11 again, after the next fuel rod is in place, the gripper is lifted again, and the lifting operation of the gripper 9 (the moving track is shown as track A in figures 4 and 5) is repeated until the fuel rod preparation is completed.

The linear electric cylinder 2 and the spiral elevator 1 jointly drive the gripper 9 to move, the whole fuel rod on the gripper 9 is placed on the fuel rod transport trolley III, then the gripper 9 is pulled out of the trolley, the fuel rod feeding operation is completed, and then the trolley is pushed into a helium leak detection container to perform helium leak detection operation.

To sum up, the automatic fuel rod feeding device provided by the embodiment of the utility model realizes single fuel rod preparation, batch feeding and automatic transportation through the mutual cooperative operation among the fuel rod transfer device I, the fuel rod longitudinal transmission device II and the fuel rod transport trolley III; the material preparing and feeding structure of the fuel rod is simple and reliable; the preparation and feeding of the fuel rods are respectively driven by two motors (a motor 13 and a spiral elevator 1), so that the number of power components is optimized; the fuel rod transfer device I and the fuel rod longitudinal transmission device II are arranged up and down, and manual operation and maintenance of equipment are facilitated.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. An automatic feeding device, characterized by, includes: the transfer device, the longitudinal transmission device and the transport trolley are arranged on the conveying device; the transfer device is arranged above the longitudinal transmission device, and the longitudinal transmission device is provided with a station to be transferred and a station to be loaded; wherein the content of the first and second substances,

2. The automatic feeding device according to claim 1, wherein the longitudinal transmission device comprises: the station to be transported and the station to be loaded are positioned on the lower bracket; the workpiece transfer mechanism is arranged at a position of a material-to-be-loaded station on the lower support and is used for receiving the rod-shaped workpieces transferred in the previous process one by one.

3. The automatic feeding device according to claim 2, wherein the work transfer mechanism comprises: the device comprises a motor, a conveyor belt, a plurality of rollers and a plurality of roller brackets; each roller corresponds to one roller bracket and is connected with the corresponding roller bracket, the rollers are arranged at intervals in a preset distance along a straight line, and the middle of the peripheral surface of each roller is internally recessed; the conveying belt is tensioned on each roller; the roller bracket and the motor are arranged on the lower bracket; the motor is connected with the conveyor belt and used for driving the rollers to synchronously rotate through the conveyor belt, so that the rod-shaped workpieces transmitted from the previous process are received one by utilizing the depressions of the rollers.

4. The automatic feeding device according to claim 2, wherein the longitudinal transmission device further comprises: the trolley guide rail is arranged at a station to be transported on the lower support; the transport trolley can enter and leave the station to be transported along the trolley guide rail.

5. The automatic feeding device according to claim 1, wherein the transfer device comprises: the device comprises a horizontal moving mechanism, a vertical moving mechanism and a plurality of grippers connected with the horizontal moving mechanism and the vertical moving mechanism; wherein the content of the first and second substances,

6. The automatic feeding device according to claim 5, wherein the horizontal moving mechanism comprises: the upper support, the linear transmission mechanism, the linear guide rail and the moving beam; the linear transmission mechanism is arranged on the upper support, and the linear guide rail is horizontally arranged at the bottom of the upper support; the moving beam is arranged below the linear guide rail, is respectively connected with the linear transmission mechanism and the gripper, and can move back and forth along the linear guide rail under the driving of the linear transmission mechanism so as to drive the gripper to move back and forth along the horizontal direction.

7. The automatic loading device according to claim 6, wherein said upper support is of a rectangular frame structure comprising four side frames; the linear transmission mechanisms are arranged on two opposite side frames; two linear guide rails are adopted and are respectively arranged at the bottoms of the other two opposite frames; the movable beam is arranged below the two linear guide rails.

8. The automatic feeding device according to claim 6, wherein said vertical moving mechanism comprises: a lifting mechanism and a lifting beam; the lifting beam is arranged below the moving beam, and the hand grip is arranged at the bottom of the lifting beam; the lifting mechanism is arranged on the movable beam, connected with the lifting beam and used for driving the lifting beam to do lifting motion, so that the hand grab is driven to move up and down along the vertical direction.

9. The automatic feeding device according to claim 8, wherein said vertical moving mechanism further comprises: and the guide mechanism is connected with the lifting beam and used for guiding when the lifting beam does lifting motion.

10. The automatic feeding device according to claim 9, wherein the guide mechanism comprises: the guide device comprises a plurality of guide shafts and a plurality of linear bearings, wherein each guide shaft corresponds to one linear bearing; the bottom of the guide shaft is fixed on the lifting beam, and the top of the guide shaft penetrates through the movable beam; the linear bearings are sleeved on the corresponding guide shafts, and the bottoms of the linear bearings are fixed on the movable beam.

11. The automatic feeding device according to claim 1, wherein the rod-shaped workpieces are fuel rods, the transfer device and the longitudinal transmission device are both arranged in a glove box, the transfer device is fixed at the top of the glove box, and the longitudinal transmission device is fixed at the bottom of the glove box.