CN112607296A

CN112607296A - Electronic pallet truck is used in commodity circulation storage letter sorting

Info

Publication number: CN112607296A
Application number: CN202110190893.0A
Authority: CN
Inventors: 吴桂珍
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-20
Filing date: 2021-02-20
Publication date: 2021-04-06

Abstract

The invention discloses an electric pallet truck for logistics storage and sorting, which comprises an electric pallet truck main body, universal wheels and a motor, wherein the universal wheels are arranged on the bottom surface of the electric pallet truck main body, the motor is arranged inside the upper end of the electric pallet truck main body, a rack is arranged on the inner side of the electric pallet truck main body, two ratchet wheels are sleeved on the surface of a driving shaft in the motor, ratchets are meshed on the surfaces of the ratchet wheels at equal angles, and one ends of the ratchet wheels, far away from the ratchet wheels, are respectively and rotatably connected with a movable disc and a driving gear. This electronic pallet truck is used in logistics storage letter sorting, fork piece drive the loose gear removal when going up and down, pass through the meshing of loose gear and rack this moment for the loose gear is rotatory at the in-process that removes, thereby makes the loose gear drive the first belt pulley of coaxial setting rotatory, has made things convenient for first belt pulley to pass through the transmission band and has removed the tray to the one end that is close to electronic pallet truck main part on the fork piece.

Description

Electronic pallet truck is used in commodity circulation storage letter sorting

Technical Field

The invention relates to the technical field of logistics storage, in particular to an electric pallet truck for logistics storage and sorting.

Background

With the rapid rise of the e-commerce industry, the logistics industry is also in great development, a warehouse needs to be built in the logistics transferring process to store and summarize the goods, the goods need to be sorted when being stored, and various tools need to be used according to different goods when being sorted, wherein the tools comprise an electric pallet truck, but the conventional electric pallet truck for logistics storage and sorting generally has the following problems when being used;

1. when the fork blocks are lifted to a certain height and are suspended, the fork blocks can be inclined under the influence of the gravity of goods, the conventional electric pallet truck is not beneficial to supporting the extending ends of the fork blocks, so that the fork blocks are easy to break and damage after being suspended and inclined for a long time, and the electric pallet truck cannot perform normal sorting work due to the fact that maintenance is needed after the fork blocks are broken, so that the sorting work is stopped, and the efficiency of the whole work is reduced;

2. the current electronic pallet truck passes through the slope fork piece for the center of tray removes the end slope to the pallet truck, reaches and avoids the tray to drop, but this kind of measure can make the goods on the tray take place the slope thereupon, thereby leads to the goods still can take place to drop, and the goods that drop takes place to injure staff's phenomenon by a crashing object easily, thereby has reduced the security of letter sorting work, and the goods that drop simultaneously can cause the damage to warehouse ground, has increased subsequent cost of maintenance.

Therefore, an electric pallet truck for logistics storage and sorting is provided so as to solve the problems provided in the above.

Disclosure of Invention

The invention aims to provide an electric pallet truck for logistics storage sorting, which solves the problems that when a fork block is lifted to a certain height and is suspended, the fork block can incline under the influence of the gravity of goods, the existing electric pallet truck is not beneficial to supporting the extending end of the fork block, the fork block is easy to break and damage after being suspended and inclined for a long time, the electric pallet truck cannot carry out normal sorting work after the fork block is broken and needs maintenance, the sorting work is stopped, the efficiency of the whole work is reduced, the center of a pallet is inclined towards the moving end of the pallet truck through the inclined fork block, the dropping of the pallet is avoided, but the goods on the pallet can incline along with the inclined fork block, the goods can still fall off, and the fallen goods can easily injure workers, thereby reduced the security of letter sorting work, the goods that drop simultaneously can cause the damage to warehouse ground, increased subsequent cost of maintenance's problem.

In order to achieve the purpose, the invention provides the following technical scheme: an electric pallet truck for sorting in logistics storage comprises an electric pallet truck main body, universal wheels and a motor, wherein the universal wheels are arranged on the bottom surface of the electric pallet truck main body, the motor is arranged inside the upper end of the electric pallet truck main body, a rack is arranged on the inner side of the electric pallet truck main body, two ratchets are sleeved on the surface of a driving shaft in the motor, ratchets are meshed on the surfaces of the ratchets at equal angles, one ends, far away from the ratchets, of the ratchets are respectively and rotatably connected with a movable disc and a driving gear, the bottom surface of the movable disc is provided with a reciprocating lead screw, the reciprocating lead screw is mutually connected with one end of a fork block, a limiting rod is arranged inside one end, close to the reciprocating lead screw, of the fork block, the outer side of one end, close to the reciprocating lead screw is provided with a movable gear, one end, and one end of the transmission belt is provided with a second belt pulley, one end of the connecting shaft penetrating through the fork block in the second belt pulley is provided with a special-shaped gear, one end of the special-shaped gear is provided with a driven gear, and a reset shaft is arranged in the driven gear, one end of the reset shaft extends into the supporting block and is provided with a first scroll spring, the surface of the other end of the reset shaft is sleeved with a movable block, the other end of the connecting shaft in the second belt pulley is provided with a supporting rod, and the bottom surface of the supporting rod is rotatably provided with a supporting wheel, one end of the driving gear is provided with a linkage gear, a supporting shaft is arranged at the center of the linkage gear, a limiting block is arranged at one end of the supporting shaft extending into the fixed block, a second volute spiral spring is sleeved on the surface of the limiting block, and the top surface of the limiting block is provided with a worm, one side of the upper end of the worm is meshed with a worm wheel, and one end of the worm wheel is provided with a positioning block.

Preferably, the ratchet wheel and the ratchet tooth inside the movable disc are distributed in the opposite direction to the meshing direction of the ratchet wheel and the ratchet tooth inside the driving gear, and the driving gear is an incomplete gear.

Preferably, drive gear and linkage gear intermeshing, and linkage gear's diameter is less than drive gear's diameter, be the key-type connection between linkage gear and the back shaft, and be "ten" font distribution between stopper and the back shaft to the stopper passes through second volute spiral spring and constitutes revolution mechanic with the fixed block.

Preferably, one end of the fork block is overlooked to be in a shape like a Chinese character 'shan', one end of the fork block is in penetrating connection with the limiting rod, the limiting rod is symmetrically distributed around the longitudinal central line of the fork block, and the fork block is in threaded connection with the reciprocating screw rod.

Preferably, a sliding structure is formed between the movable gear and the rack, and the movable gear and the rack are meshed and connected with each other.

Preferably, a linkage structure is formed between the movable gear and the first belt pulley, and the movable gear and the special-shaped gear are symmetrically distributed about the longitudinal center line of the transmission belt.

Preferably, tooth blocks are distributed on one fourth of the surface of the special-shaped gear, one end of the special-shaped gear is meshed with the driven gear, the driven gear is in key connection with the reset shaft, the reset shaft is T-shaped when viewed from above, and the reset shaft forms a rotating structure with the supporting block through the first volute spiral spring.

Preferably, the movable block and the fork block are vertically distributed, and the support rod is in an inclined shape.

Preferably, the positioning block is of an L-shaped structure, and the outer side of one end of the positioning block is flush with the outer side of one end of the movable block.

Compared with the prior art, the invention has the beneficial effects that: the electric pallet truck for logistics storage and sorting;

1. the fork blocks drive the movable gears to move while lifting, at the moment, the movable gears are enabled to rotate in the moving process through the engagement of the movable gears and the racks, so that the movable gears drive the first belt pulley which is coaxially arranged to rotate, the first belt pulley is convenient to move the tray to one end, close to the electric trailer body, of the fork blocks through the transmission belt, the gravity center of the tray is prevented from being close to the extending end of the fork blocks, the phenomenon that the fork blocks incline and are broken and damaged after the fork blocks incline for a long time subsequently is avoided, the service life of the fork blocks is prolonged, the phenomenon that the whole sorting work is stopped when the fork blocks are maintained is avoided, and the working efficiency is improved;

2. when the first belt pulley rotates, the second belt pulley rotates through a transmission belt, so that the second belt pulley drives the coaxially arranged supporting rod to rotate, the supporting rod is kept in contact with the bottom surface through the supporting wheel, the supporting rod is guaranteed to effectively support the extending end of the fork block, the stability of the fork block for supporting the tray is further improved, meanwhile, when the second belt pulley rotates, the coaxially arranged special-shaped gear drives the driven gear to rotate, the tooth block and the volute spiral spring are distributed through one fourth of the driven gear in a matched mode, the movable block limits the lower end of goods on the tray, the phenomenon that the goods fall down and injure workers is avoided, and the safety of sorting work is improved;

3. when the motor reverses, use through the cooperation of ratchet thorn, it is rotatory to make the worm drive the worm wheel, thereby make the worm wheel drive the locating piece and rotate, it is spacing to have made things convenient for the locating piece to carry out the upper end of goods on the tray, further avoided the goods to take place the phenomenon that drops, drive through a motor simultaneously, avoid the cost-push that leads to through adding the motor, be favorable to the consumption that reduces the energy simultaneously, avoid the energy resource consumption overweight to cause the pollution phenomenon to human living environment, green's effect has been reached.

Drawings

FIG. 1 is a schematic view of the overall front cross-sectional structure of the present invention;

FIG. 2 is a schematic view of the connecting structure of the ratchet and the movable plate in a top view;

FIG. 3 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 4 is an enlarged view of the structure at B in FIG. 1 according to the present invention;

FIG. 5 is a schematic view of a top connection structure of the driving gear and the linking gear of the present invention;

FIG. 6 is a schematic view of the overall top cross-sectional structure of the present invention;

FIG. 7 is an enlarged view of the structure of FIG. 3 at C according to the present invention;

FIG. 8 is a schematic view of the front view connection structure of the special-shaped gear and the driven gear of the present invention;

fig. 9 is a schematic view of a front view connection structure of the reset shaft and the support block according to the present invention.

In the figure: 1. an electric trailor body; 2. a universal wheel; 3. a motor; 4. a rack; 5. a ratchet wheel; 6. a ratchet; 7. a movable tray; 8. a drive gear; 9. a reciprocating screw rod; 10. a fork block; 11. a limiting rod; 12. a movable gear; 13. a first pulley; 14. a conveyor belt; 15. a second pulley; 16. a special-shaped gear; 17. a driven gear; 18. a reset shaft; 19. a support block; 20. a first scroll spring; 21. a movable block; 22. a support bar; 23. a support wheel; 24. a linkage gear; 25. a support shaft; 26. a fixed block; 27. a limiting block; 28. a second scroll spring; 29. a worm; 30. a worm gear; 31. and (5) positioning the blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution: an electric pallet truck for logistics storage and sorting comprises an electric pallet truck main body 1, universal wheels 2, a motor 3, racks 4, ratchet wheels 5, ratchets 6, a movable disc 7, a driving gear 8, a reciprocating screw rod 9, a fork block 10, a limiting rod 11, a movable gear 12, a first belt pulley 13, a transmission belt 14, a second belt pulley 15, a special-shaped gear 16, a driven gear 17, a reset shaft 18, a supporting block 19, a first scroll spring 20, a movable block 21, a supporting rod 22, a supporting wheel 23, a linkage gear 24, a supporting shaft 25, a fixed block 26, a limiting block 27, a second scroll spring 28, a worm 29, a worm wheel 30 and a positioning block 31, wherein the universal wheels 2 are arranged on the bottom surface of the electric pallet truck main body 1, the motor 3 is arranged inside the upper end of the electric pallet truck main body 1, the racks 4 are arranged on the inner side of the electric pallet truck main body 1, two ratchet wheels 5 are sleeved on, the surface of the ratchet wheel 5 is engaged with the ratchet 6 at equal angles, one end of the ratchet 6 far away from the ratchet wheel 5 is respectively and rotatably connected with a movable disc 7 and a driving gear 8, the bottom surface of the movable disc 7 is provided with a reciprocating screw rod 9, the reciprocating screw rod 9 is mutually connected with one end of a fork block 10, a limiting rod 11 is arranged inside one end of the fork block 10 close to the reciprocating screw rod 9, a movable gear 12 is arranged outside one end of the fork block 10 close to the reciprocating screw rod 9, one end of the movable gear 12 far away from the fork block 10 is coaxially provided with a first belt pulley 13, the surface of the first belt pulley 13 is provided with a transmission belt 14, one end of the transmission belt 14 is provided with a second belt pulley 15, one end of a connecting shaft in the second belt pulley 15 penetrating through the fork block 10 is provided with a special-shaped gear 16, one end of the special-shaped gear 16 is provided with a driven gear 17, a reset shaft 18 is arranged inside, and the other end surface of the reset shaft 18 is sleeved with a movable block 21, the other end of the connecting shaft in the second belt pulley 15 is provided with a supporting rod 22, the bottom surface of the supporting rod 22 is rotatably provided with a supporting wheel 23, one end of the driving gear 8 is provided with a linkage gear 24, the center of the linkage gear 24 is provided with a supporting shaft 25, one end of the supporting shaft 25 extends into the fixed block 26 and is provided with a limit block 27, the surface of the limit block 27 is sleeved with a second volute spring 28, the top surface of the limit block 27 is provided with a worm 29, one side of the upper end of the worm 29 is engaged with a worm wheel 30, and one end of.

The ratchet wheel 5 and the ratchet 6 in the movable disc 7 are in opposite distribution with the ratchet wheel 5 and the ratchet 6 in the driving gear 8, and the driving gear 8 is an incomplete gear, so that the driving gear 8 is convenient to stop when the movable disc 7 rotates, and on the contrary, the movable disc 7 is stopped when the driving gear 8 rotates.

Drive gear 8 and linkage gear 24 intermeshing, and linkage gear 24's diameter is less than drive gear 8's diameter, be the key-type connection between linkage gear 24 and the back shaft 25, and be "ten" font distribution between stopper 27 and the back shaft 25, and stopper 27 constitutes revolution mechanic through second volute spiral spring 28 and fixed block 26, has made things convenient for drive gear 8 intermittent type nature to drive linkage gear 24 with faster speed's rotation, has made things convenient for the follow-up elasticity through second volute spiral spring 28 to drive linkage gear 24 to reset rotatoryly simultaneously.

One end of the fork block 10 is overlooked to be in a shape like a Chinese character 'shan', one end of the fork block 10 is in penetrating connection with the limiting rod 11, the limiting rod 11 is symmetrically distributed about the longitudinal central line of the fork block 10, the fork block 10 is in threaded connection with the reciprocating screw rod 9, and the reciprocating screw rod 9 is convenient to drive the fork block 10 to slide when rotating.

A sliding structure is formed between the movable gear 12 and the rack 4, and the movable gear 12 and the rack 4 are meshed with each other, so that the movable gear 12 can rotate by being meshed with the rack 4 when moving.

The movable gear 12 and the first belt pulley 13 form a linkage structure, and the movable gear 12 and the special-shaped gear 16 are symmetrically distributed about the longitudinal center line of the transmission belt 14, so that the movable gear 12 drives the first belt pulley 13 to rotate when rotating, and the special-shaped gear 16 rotates simultaneously.

The surface quarter of shaped gear 16 distributes has the tooth piece, and shaped gear 16's one end and driven gear 17 intermeshing, be the key-type connection between driven gear 17 and the reset shaft 18, and the depression of reset shaft 18 regards as "T" font to reset shaft 18 constitutes revolution mechanic through first spiral spring 20 and supporting shoe 19, has made things convenient for shaped gear 16 intermittent type nature to drive driven gear 17 and has rotated, has made things convenient for follow-up first spiral spring 20 to drive driven gear 17 simultaneously and has reset rotatoryly.

Be mutually perpendicular between movable block 21 and the fork piece 10 and distribute, the front view of bracing piece 22 is the slope form, has made things convenient for movable block 21 to carry on spacingly to the goods, has made things convenient for bracing piece 22 to support the end that stretches out of fork piece 10 simultaneously.

The positioning block 31 is of an L-shaped structure, and the outer side of one end of the positioning block 31 is flush with the outer side of one end of the movable block 21, so that the positioning block 31 can further support the goods conveniently.

The working principle of the embodiment is as follows: according to the drawings of fig. 1-4 and fig. 6-9, firstly, the electric trailer body 1 is placed at a proper position, then the motor 3 is started after being connected with an external power supply, and the motor 3 is controlled to rotate positively, so that the motor 3 drives the ratchet wheel 5 to rotate anticlockwise, the ratchet wheel 5 drives the movable disc 7 to rotate through the ratchet 6, the movable disc 7 drives the reciprocating screw rod 9 to rotate, at the moment, the fork 10 is limited through the limiting rod 11, the fork 10 cannot rotate, the reciprocating screw rod 9 drives the fork 10 to slide up and down, when the fork 10 slides, the movable gear 12 is driven to slide synchronously, and under the meshing of the movable gear 12 and the rack 4, the movable gear 12 rotates when sliding, so that the movable gear 12 drives the first belt pulley 13 which is coaxially arranged to rotate, and the first belt pulley 13 drives the transmission belt 14 to move, the conveying belt 14 is convenient to drive the tray to horizontally move on the fork blocks 10, so that the center of the goods can be moved towards one end of the fork blocks 10 close to the electric trailer body 1, the situation that the goods incline due to the influence of gravity is avoided, the fork blocks 10 break and are damaged, maintenance work is required, the service life of the fork blocks 10 is prolonged, the stagnation of the whole sorting work caused by the maintenance of the fork blocks 10 is avoided, the working efficiency is improved, the conveying belt 14 drives the second belt pulley 15 to rotate when sliding, the second belt pulley 15 drives the coaxially arranged special-shaped gear 16 to rotate, tooth blocks are distributed on one fourth of the surface of the special-shaped gear 16, the special-shaped gear 16 drives the driven gear 17 to intermittently rotate, the driven gear 17 drives the movable block 21 to rotate through the reset shaft 18, and the movable block 21 is free of limit on the goods, meanwhile, the reset shaft 18 rotates to drive the first volute spiral spring 20 in the supporting block 19 to deform, when the follow-up special-shaped gear 16 is disengaged from the driven gear 17, the first volute spiral spring 20 drives the movable block 21 to reset and rotate through the reset shaft 18 through the elasticity of the first volute spiral spring 20, so that the movable block 21 limits the goods, the goods are prevented from falling off, meanwhile, the second belt pulley 15 rotates to drive the coaxially arranged supporting rod 22 to rotate, so that the supporting rod 22 drives the supporting wheel 23 to keep contact with the ground, the supporting rod 22 is favorable for supporting the extending end of the fork block 10, and the stability of the fork block 10 is further improved;

according to the fig. 1-5-6, when the motor 3 is controlled to rotate reversely, the motor 3 is enabled to drive the ratchet wheel 5 to rotate clockwise, so that the ratchet wheel 5 idles in the movable disk 7, meanwhile, the ratchet wheel 5 drives the driving gear 8 to rotate through the ratchet 6, the driving gear 8 intermittently drives the linkage gear 24 to rotate through the arrangement of the incomplete gear of the driving gear 8, when the linkage gear 24 rotates, the supporting shaft 25 drives the limiting block 27 in the fixed block 26 to rotate, so that the limiting block 27 drives the second scroll spring 28 to deform, which facilitates the subsequent return rotation of the linkage gear 24 through the elasticity of the second scroll spring 28, when the linkage gear 24 rotates, the supporting shaft 25 drives the worm 29 to rotate, so that the worm 29 drives the positioning block 31 to rotate through the worm wheel 30, thereby further limiting the goods by the positioning block 31, thereby avoid the goods to take place to fall behind and injure staff's phenomenon by a crashing object, improved the security of whole work, avoided the goods to fall behind to take place to destroy warehouse ground phenomenon by a crashing object simultaneously, practice thrift follow-up cost of maintenance to ground, above-mentioned operation drives through a motor 3 simultaneously, has practiced thrift the cost-push who adds motor 3 and leads to, has practiced thrift the consumption of the energy simultaneously, avoids the energy resource consumption overweight to cause the pollution phenomenon to human living environment, has reached green's effect.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a commodity circulation storage is electronic pallet truck for letter sorting, includes electronic pallet truck main part (1), universal wheel (2) and motor (3), its characterized in that: the bottom surface of the electric trawling vehicle main body (1) is provided with universal wheels (2), the motor (3) is arranged inside the upper end of the electric trawling vehicle main body (1), the inner side of the electric trawling vehicle main body (1) is provided with a rack (4), two ratchets (5) are sleeved on the surface of a driving shaft in the motor (3), the surfaces of the ratchets (5) are meshed with ratchets (6) at equal angles, one ends, far away from the ratchets (5), of the ratchets (6) are respectively and rotatably connected with a movable disc (7) and a driving gear (8), the bottom surface of the movable disc (7) is provided with a reciprocating lead screw (9), the reciprocating lead screw (9) is mutually connected with one end of a fork block (10), a limiting rod (11) is arranged inside one end, close to the reciprocating lead screw (9), of the fork block (10) is provided with a movable gear, a first belt pulley (13) is coaxially arranged at one end, far away from the fork block (10), of the movable gear (12), a transmission belt (14) is arranged on the surface of the first belt pulley (13), a second belt pulley (15) is arranged at one end of the transmission belt (14), a special-shaped gear (16) is arranged at one end, penetrating through the fork block (10), of an inner connecting shaft of the second belt pulley (15), a driven gear (17) is arranged at one end of the special-shaped gear (16), a reset shaft (18) is arranged inside the driven gear (17), a first volute spiral spring (20) is arranged at one end, extending into the supporting block (19), of the reset shaft (18), a movable block (21) is sleeved on the surface of the other end of the inner connecting shaft of the second belt pulley (15), a supporting rod (22) is arranged at the other end of the supporting rod (22), and a supporting wheel (23) is rotatably arranged on the, the one end of drive gear (8) is provided with linkage gear (24), and the center of linkage gear (24) is provided with back shaft (25), the inside that the one end of back shaft (25) stretched into fixed block (26) is provided with stopper (27), and the surface cover of stopper (27) is equipped with second spiral spring (28) to the top surface of stopper (27) is provided with worm (29), the meshing of upper end one side of worm (29) has worm wheel (30), and the one end of worm wheel (30) is provided with locating piece (31).

2. The electric pallet truck for logistics storage and sorting according to claim 1, wherein: the ratchet wheel (5) and the ratchet tooth (6) in the movable disc (7) and the ratchet wheel (5) and the ratchet tooth (6) in the driving gear (8) are in opposite distribution in meshing direction, and the driving gear (8) is an incomplete gear.

3. The electric pallet truck for logistics storage and sorting according to claim 2, wherein: drive gear (8) and linkage gear (24) intermeshing, and the diameter of linkage gear (24) is less than the diameter of drive gear (8), be the key-type connection between linkage gear (24) and back shaft (25), and be "ten" font distribution between stopper (27) and back shaft (25) to stopper (27) constitute revolution mechanic through second spiral spring (28) and fixed block (26).

4. The electric pallet truck for logistics storage and sorting according to claim 1, wherein: one end of the fork block (10) is overlooked to be in a shape like a Chinese character 'shan', one end of the fork block (10) is in through connection with the limiting rod (11), the limiting rod (11) is symmetrically distributed around the longitudinal central line of the fork block (10), and the fork block (10) is in threaded connection with the reciprocating screw rod (9).

5. The electric pallet truck for logistics storage and sorting according to claim 1, wherein: a sliding structure is formed between the movable gear (12) and the rack (4), and the movable gear (12) and the rack (4) are meshed and connected with each other.

6. The electric pallet truck for logistics storage and sorting according to claim 5, wherein: a linkage structure is formed between the movable gear (12) and the first belt pulley (13), and the movable gear (12) and the special-shaped gear (16) are symmetrically distributed about the longitudinal central line of the transmission belt (14).

7. The electric pallet truck for logistics storage and sorting according to claim 6, wherein: tooth blocks are distributed on one quarter of the surface of the special-shaped gear (16), one end of the special-shaped gear (16) is meshed with the driven gear (17), the driven gear (17) is in key connection with the reset shaft (18), the reset shaft (18) is T-shaped in plan view, and the reset shaft (18) and the supporting block (19) form a rotating structure through the first volute spiral spring (20).

8. The electric pallet truck for logistics storage and sorting according to claim 1, wherein: the movable block (21) and the fork block (10) are vertically distributed, and the support rod (22) is in an inclined shape.

9. The electric pallet truck for logistics storage and sorting according to claim 1, wherein: the front view of the positioning block (31) is an L-shaped structure, and the outer side of one end of the positioning block (31) is flush with the outer side of one end of the movable block (21).