CN114524014A

CN114524014A - Novel material frame of convenient operation

Info

Publication number: CN114524014A
Application number: CN202210075462.4A
Authority: CN
Inventors: 易火财
Original assignee: Guangzhou Runyi Packaging Products Co ltd
Current assignee: Guangzhou Runyi Packaging Products Co ltd
Priority date: 2022-01-22
Filing date: 2022-01-22
Publication date: 2022-05-24
Anticipated expiration: 2042-01-22
Also published as: CN114524014B

Abstract

The invention discloses a novel material rack convenient to operate, which comprises a frame, a bottom plate, an inserting sleeve, a front wheel and a rear wheel, wherein a brake is arranged on the rear wheel, the brake is provided with a control swing arm, a movable plate capable of swinging back and forth is arranged at the front part of the inserting sleeve, the swing arm is in transmission connection with the movable plate, a horizontal turntable is arranged at the outer side of the inserting sleeve and close to the outer end of the movable plate, the turntable is in rotary connection with the bottom plate, a connecting rod is arranged between the turntable and the movable plate, a pedal capable of swinging up and down is arranged at the front end of the turntable, a positioning block is arranged at the front edge of the bottom plate, a plurality of positioning grooves for allowing clamping blocks to enter are formed in the edge of the positioning block, and a telescopic clamping block is arranged on the pedal. The material frame is provided with a manual brake mechanism and a brake releasing mechanism, and a linkage mechanism for converting thrust of the fork arm into brake action is arranged, so that if a worker forgets to brake and lock the material frame, an operator does not need to confirm whether the material frame is in a locked state, the fork arm can be directly inserted into the plug bush, the brake can be automatically completed by means of the thrust of the fork arm, and the fork loading efficiency is improved.

Description

Novel material frame of convenient operation

Technical Field

The invention relates to material transfer equipment, in particular to a novel material rack convenient to operate.

Background

The material shelf is also called a material transfer shelf, is equipment provided with casters for transferring and storing materials, and is commonly used for logistics distribution of a large supermarket or logistics turnover of factory working rooms.

The existing material rack is provided with a pair of plug bushes for inserting fork arms of a forklift on a bottom plate of the material rack, after the fork arms of the forklift are inserted into the plug bushes, a transfer trolley can be lifted upwards, and then the position of the transfer trolley can be moved by means of the transfer trolley; such a material rack can also be moved by manual force. The workman can use fork truck or remove this kind of material frame through the manpower, conveniently accomplishes the operation of transporting in the scene of difference.

In order to prevent the material frame from sliding automatically, the caster wheel of the material frame is generally provided with a wheel lock mechanism, when a worker needs to manually drag the material frame, the wheel lock mechanism is operated to unlock the caster wheel, then the material frame can be moved freely, after the material frame is moved in place, the wheel lock mechanism is operated to lock the caster wheel, and at the moment, the material frame is locked. When the material rack needs to be transferred by using the forklift, in the process of inserting the fork arm into the plug bush, in order to prevent the fork arm from touching the material rack to slide the material rack, the fork arm cannot be smoothly inserted into the plug bush, and the material rack needs to be ensured to be in a locking state.

In actual operation, a worker may forget to lock the material frame after transferring the material frame to a required position, and when the material frame is required to be transferred subsequently by using a forklift, the material frame is not locked, so that a forklift operator needs to get off to confirm whether the material frame is in a locked state before forking, and the unlocked material frame needs to be locked by the forklift operator, and then get on to complete subsequent operation, which is very inconvenient, and causes the forking device to have low efficiency and to be improved.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a novel material rack which is convenient to operate and can improve the forking efficiency.

In order to achieve the purpose, the invention provides the following technical scheme:

a novel material rack convenient to operate comprises a frame and a bottom plate, wherein a pair of counter-rotating front wheels and a pair of rear wheels are arranged below the bottom plate, a pair of parallel plug bushes are arranged on the bottom surface of the bottom plate, brakes are arranged at two groups of rear wheels and provided with automatic return type swing arms for controlling braking and brake loosening, the front ends of the plug bushes are funnel-shaped, an opening is formed in the side wall of the front part of one group of the plug bushes, movable plates capable of swinging back and forth are arranged in the opening, the inner ends of the movable plates extend into the inner side of the front part of the plug bushes, the outer ends of the movable plates extend out of the plug bushes, the movable plates are obliquely arranged to enable the outer ends of the movable plates to be close to the front end surface of the plug bushes, a transmission rod is arranged between the two groups of the brakes, the two ends of the transmission rod are respectively rotatably connected with the end parts of the two groups of the swing arms, and a horizontal rotary disc is arranged at the position, close to the outer ends of the movable plates, of the transmission rod, the rotary table is rotatably connected with the bottom plate, a connecting rod is arranged between the rotary table and the movable plate, two ends of the connecting rod are respectively hinged with the outer ends of the rotary table and the movable plate, pull wires are arranged at the outer side part of the plug bush along the front-back direction of the material rack, the front ends of the pull wires are connected with the outer end of the movable plate, the rear ends of the pull wires are connected with a transmission rod, a pedal is arranged at the front end of the rotary table, the pedal protrudes out of the front part of the bottom plate, the pedal is rotatably connected with the rotary table and can swing up and down, a positioning block is arranged on the front edge of the bottom plate and behind the pedal, the edge of the positioning block is in a circular arc shape coaxial with the rotary table, a plurality of inward-concave positioning grooves are uniformly arranged at the edge of the positioning block along the circumferential direction of the positioning block, a telescopic fixture block is arranged on the pedal, the plurality of positioning grooves are positioned on a path along which the rotary table, and are used for the fixture block to enter, the end part of the clamping block is an arc-shaped surface facing away from the movable plate.

As a preferable scheme: the pedal is provided with an accommodating cavity, the fixture block is arranged in the accommodating cavity and can slide back and forth, the side part of the fixture block is provided with a limiting block, and a spring for driving the fixture block to extend out is arranged in the accommodating groove.

As a preferable scheme: the inner end of the movable plate is bent backwards.

As a preferable scheme: the movable plug is characterized by further comprising a pressing plate, the pressing plate is arranged in the plug bush and located in front of the movable plate, the front end of the pressing plate is rotatably connected with the inner wall of the plug bush, the rear end of the pressing plate is in contact with the inner end of the movable plate, an elastic block is arranged between the front end of the pressing plate and the inner wall of the plug bush, and two surfaces of the elastic block are respectively fixedly bonded with the inner wall of the plug bush and the surface of the pressing plate.

As a preferable scheme: an arc lubricating sheet is arranged on the surface of the inner end of the movable plate, which is contacted with the pressure plate.

As a preferable scheme: and an elastic buffer pad is arranged on one surface of the pressing plate, which is contacted with the fork arm.

As a preferable scheme: the rear end of clamp plate is provided with hollow frame that alternates, it extends to the rear of clamp plate to alternate the frame, the inner of fly leaf is provided with wears the inserted sheet, it is crooked towards the clamp plate to wear the inserted sheet, it has the coincidence position along with the route that the fly leaf swing formed and the route that the frame that alternates formed along with the clamp plate swing of inserted sheet.

As a preferable scheme: the utility model discloses a bracing wire, including preceding section line and back section line, be connected fixedly with the outer end of fly leaf for acting as go-between, the rear end of preceding section line is provided with preceding adapter sleeve, be provided with preceding connecting block in the preceding adapter sleeve, the front end of preceding adapter sleeve is provided with preceding through-hole, the rear end of preceding section line passes preceding through-hole and is connected with preceding connecting block, the rear end and the transfer line of back section line are connected, the front end of back section line is provided with the back adapter sleeve, be provided with the back connecting block in the back adapter sleeve, the rear end of back adapter sleeve is provided with the back through-hole, the front end of back section line passes the back through-hole and is connected with the back connecting block, the rear end of preceding adapter sleeve and the front end threaded connection of back adapter sleeve.

Compared with the prior art, the invention has the advantages that: the material frame is provided with a manual brake and brake releasing mechanism and a linkage mechanism which can convert the thrust of the fork arm into brake action, the brake releasing can be manually operated firstly when the material frame is manually transferred, then the material frame can be freely moved, and the brake is manually operated after the material frame is moved in place; if a worker forgets to brake and lock the material frame after moving the material frame to a required position, an operator does not need to confirm whether the material frame is in a locking state, but can directly drive the forklift to insert the fork arm into the plug bush, and automatically complete the braking operation by means of the thrust of the fork arm, so that the material frame is locked, and then the fork arm can be smoothly inserted into the plug bush, thereby facilitating the forking and improving the forking efficiency.

Drawings

Fig. 1 is a schematic overall structure diagram of a material rack in the first embodiment;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view of a brake mechanism according to a first embodiment;

FIG. 4 is an enlarged view of portion B of FIG. 3;

FIG. 5 is an enlarged view of the portion C of FIG. 4;

FIG. 6 is a schematic view of a platen mechanism according to a second embodiment;

FIG. 7 is an enlarged view of section D of FIG. 6;

fig. 8 is a schematic view of a wire adjusting mechanism according to the second embodiment.

1, frame; 2. a base plate; 3. a front wheel; 4. rotating the wheel carrier; 5. a rear wheel; 6. fixing the wheel carrier; 7. inserting a sleeve; 8. a brake; 9. swinging arms; 10. a transmission rod; 11. a turntable; 12. a first rotating shaft; 13. a shaft sleeve; 14. an opening; 15. a movable plate; 16. a second rotating shaft; 17. a pull wire; 1701. a front section line; 1702. a back section line; 18. a connecting rod; 19. a first connection block; 20. a second connecting block; 21. a third rotating shaft; 22. a torsion spring; 23. a foot pedal; 24. a clamping block; 25. an accommodating cavity; 26. a spring; 27. a limiting block; 28. positioning blocks; 29. positioning a groove; 30. pressing a plate; 31. inserting the sheet; 32. inserting the frame; 33. an elastic block; 34. a cushion pad; 35. lubricating the sheet; 36. a front connecting sleeve; 37. a rear connecting sleeve; 38. a front connecting block; 39. a front through hole; 40. a rear connecting block; 41. and a rear through hole.

Detailed Description

The first embodiment is as follows:

referring to fig. 1, a novel material frame convenient to operate comprises a frame 1 and a bottom plate 2, wherein a pair of front wheels 3 and a pair of rear wheels 5 are arranged below the bottom plate 2, the front wheels 3 are fixedly connected with the bottom plate 2 through rotating wheel carriers 4, so that the front wheels 3 can turn and roll towards different directions, and the rear wheels 5 are fixedly connected with the bottom plate 2 through fixing wheel carriers 6, so that the rear wheels 5 can only roll forwards and backwards. A pair of parallel plug bushes 7 are arranged on the bottom surface of the bottom plate 2, the plug bushes 7 are arranged along the front and rear direction of the material rack, and the plug bushes 7 are used for inserting fork arms of a forklift.

Referring to fig. 3 and 4, the brakes 8 (referring to a tricycle pull wire 17 hand brake) are arranged at the two groups of rear wheels 5, each brake 8 is provided with an automatic return type swing arm 9 for controlling braking and brake release, the brakes 8 lock the rear wheels 5 when the swing arms 9 are pulled to swing forwards, the swing arms 9 automatically return backwards after the swing arms 9 are released, and at the moment, the rear wheels 5 are unlocked. The front end of the plug bush 7 is funnel-shaped so as to facilitate the insertion of the fork arm, an opening 14 is formed on the side wall of the front part of one group of the plug bush 7, a movable plate 15 is arranged in the opening 14, the inner end of the movable plate 15 extends into the inner side of the front part of the plug bush 7, and the outer end of the movable plate 15 extends out of the outer side of the plug bush 7. The movable plate 15 is disposed obliquely so that its outer end is closer to the front end surface of the insert sleeve 7.

A vertical second rotating shaft 16 is fixed to a middle portion of the movable plate 15, shaft holes (not shown) are formed in top and bottom walls of the opening 14, and an end portion of the second rotating shaft 16 is inserted into the shaft holes and is freely rotatable, so that the movable plate 15 can freely swing back and forth in the opening 14.

A transmission rod 10 is arranged between the two groups of brakes 8, two ends of the transmission rod 10 are respectively and rotatably connected with the end parts of the two groups of swing arms 9, and the two groups of swing arms 9 can be driven to synchronously swing forwards by pushing the transmission rod 10 forwards.

A horizontal rotating disc 11 is arranged at the outer side of the plug bush 7 and close to the outer end of the movable plate 15, a first rotating shaft 12 is coaxially fixed at the center of the rotating disc 11, the first rotating shaft 12 is movably arranged in a shaft sleeve 13, and the shaft sleeve 13 is fixedly connected with the bottom surface of the bottom plate 2, so that the rotating disc 11 can rotate relative to the bottom plate 2.

A connecting rod 18 is arranged between the rotary table 11 and the movable plate 15, two ends of the connecting rod 18 are respectively hinged with the outer ends of the rotary table 11 and the movable plate 15, and the rotary table 11 drives the connecting rod 18 to move when rotating, thereby driving the movable plate 15 to swing.

And a pull wire 17 is arranged at the outer side part of the plug bush 7 along the front-back direction of the material rack, the front end of the pull wire 17 is connected with the outer end of the movable plate 15, and the rear end of the pull wire 17 is connected with the transmission rod 10.

The rotating turntable 11 drives the outer end of the movable plate 15 to swing forwards, so that the stay wire 17 can be pulled forwards, the transmission rod 10 is driven to move forwards, and the swing arm 9 is driven to swing forwards to lock the rear wheel 5; after the external force for driving the rotary table 11 is removed, the swing arm 9 automatically returns and pulls the transmission rod 10 and the pull wire 17 backwards, and the rotary table 11 and the movable plate 15 are driven to return.

Referring to fig. 2 and 5, a pedal 23 mechanism is provided at a front end of the turntable 11, and the pedal 23 mechanism includes a first link block 19, a second link block 20, and a pedal 23. Wherein, the first connecting block 19 is fixedly connected with the edge of the rotating disc 11, and the second connecting block 20 is located in front of the first connecting block 19 and is rotatably connected with the first connecting block 19 through a third rotating shaft 21, so that the second connecting block 20 can swing up and down. The pedal 23 is fixedly connected with the second connecting block 20, and the pedal 23 protrudes out of the front of the bottom plate 2. The cover is equipped with torsional spring 22 on third pivot 21, and torsional spring 22's both ends respectively with first connecting block 19 and the butt of second connecting block 20, and torsional spring 22 is used for driving the upward swing of second connecting block 20.

A positioning block 28 is arranged on the front edge of the bottom plate 2 and behind the pedal 23, the edge of the positioning block 28 is in the shape of a circular arc coaxial with the turntable 11, and a plurality of concave positioning grooves 29 are uniformly arranged on the edge of the positioning block 28 along the circumferential direction.

As shown in fig. 5, a containing cavity 25 is provided in the pedal 23, a latch 24 capable of sliding back and forth is provided in the containing cavity 25, a limit block 27 is provided at a side portion of the latch 24 to prevent the latch 24 from being separated from the containing groove, a spring 26 for driving the latch 24 to slide back is provided in the containing groove, and the latch 24 protrudes backward from the pedal 23.

A plurality of positioning grooves 29 are located on the path of the latch 24 rotating with the turntable 11, and the positioning grooves 29 are used for the latch 24 to enter. One surface of the end part of the fixture block 24, which is far away from the movable plate 15, is provided with an arc-shaped surface with guiding and lubricating functions, when the fixture block 24 moves towards the arc-shaped surface, the arc-shaped surface slides along the side wall of the positioning groove 29, the fixture block 24 can be driven to retract into the accommodating cavity 25, and the spring 26 is compressed; when the latch 24 passes over the current positioning groove 29 and enters the edge of the next positioning groove 29, the spring 26 starts to drive the latch 24 to extend out of the accommodating chamber 25 until the end of the latch 24 completely enters the positioning groove 29.

The use method of the material rack comprises the following steps:

in an initial state, the rotating disc 11 rotates clockwise to a certain angle, the clamping block 24 enters a certain positioning groove 29, the rotating disc 11 is locked, the outer end of the movable plate 15 swings to the foremost position, the pull wire 17 and the transmission rod 10 pull the two groups of swing arms 9 forwards to a certain position, the two groups of rear wheels 5 are locked, and the whole material rack is locked and cannot slide automatically.

When the material rack is manually transferred, the pedal 23 is stepped downwards, the pedal 23 swings downwards, after the clamping block 24 is separated from the positioning groove 29, the swing arm 9 swings backwards, so that the transmission rod 10 and the pull wire 17 are pulled backwards, the rotating disc 11 is driven to rotate reversely to reset, the movable plate 15 swings reversely, the brake 8 is loosened, the rear wheel 5 is unlocked, then the pedal 23 is released, and the torsion spring 22 drives the pedal 23 to swing upwards until the clamping block 24 enters the currently corresponding positioning groove 29. At the moment, the locking of the material rack is released, and workers can easily push the material rack.

After the worker pushes the material rack to a required position, the pedal 23 is pushed by the foot to rotate clockwise, at the moment, the turntable 11 rotates synchronously, the connecting rod 18 drives the outer end of the movable plate 15 to swing forwards, the pull wire 17 is pulled forwards, and the brake 8 starts to lock the rear wheel 5. During the process, the clamping block 24 is disengaged from one positioning groove 29

When the swing arm 9 cannot swing forwards continuously, the brake 8 reaches the limit braking position, the pedal 23 is released, the spring 26 drives the clamping block 24 to enter the currently corresponding positioning groove 29, the rotary disc 11, the movable plate 15 and the rear wheel 5 are locked, and the whole material rack is locked. Under this state, the fork dress operator can operate fork truck and come the fork dress work or material rest, and the material rest can not rock by oneself or slide, can make things convenient for the fork dress, improves fork dress efficiency.

If a worker forgets to lock the material rack after moving the material rack to a required position, the operator does not need to confirm whether the material rack is in a locked state, but can directly drive the forklift to insert the fork arm into the plug bush 7, when the front end of the fork arm enters the front end of the plug bush 7, the front end of the fork arm can be in contact with the movable plate 15 and push the inner end of the movable plate 15 backwards, so that the movable plate 15 is driven to swing anticlockwise, the movable plate 15 drives the pull wire 17 and the connecting rod 18 to move forwards, the brake 8 locks the rear wheel 5, the pedal 23 rotates clockwise along with the turntable 11, the clamping block 24 moves into a certain positioning groove 29, namely the material rack can be automatically locked when the front end of the fork arm is inserted into the front end of the plug bush 7, and even if the fork arm and the plug bush 7 scrape and collide during the subsequent process of completely inserting the fork arm into the plug bush 7, the material rack cannot automatically slide, and the smooth operation of the fork device is ensured. After the forklift transfers the material rack to a required position, the material rack is also kept in a locked state after the material rack is put down, and the next forking is convenient.

In this embodiment, the inner end of the movable plate 15 is bent backward, and the structure has the lubricating and guiding functions, so that the friction between the front end of the yoke and the movable plate 15 can be reduced, the impact of the yoke on the movable plate 15 can be relieved, and the movable plate 15 is protected.

Example two:

referring to fig. 6 and 7, the present embodiment adds a platen 30 mechanism to the first embodiment. The pressing plate 30 mechanism comprises a pressing plate 30, the pressing plate 30 is arranged in the plug bush 7 and is positioned in front of the movable plate 15, the front end of the pressing plate 30 is rotatably connected with the inner wall of the plug bush 7, and the structure enables the pressing plate 30 to swing back and forth in the plug bush 7.

The rear end of the pressing plate 30 contacts the inner end of the movable plate 15, an elastic block 33 is arranged between the front end of the pressing plate 30 and the inner wall of the plug bush 7, and two surfaces of the elastic block 33 are respectively adhered and fixed with the inner wall of the plug bush 7 and the surface of the pressing plate 30. When the pressing plate 30 swings backwards under the action of external force, the elastic block 33 is compressed and deformed, and when the external force is removed, the elastic force of the elastic block 33 drives the pressing plate 30 to swing forwards and reset.

When the front end of the yoke enters the front end of the socket 7, it contacts the pressing plate 30 and pushes the pressing plate 30 backward, and the pressing plate 30 pushes the movable plate 15 backward, so that the movable plate 15 rotates counterclockwise, thereby locking the rear wheel 5.

The movable plate 15 can be prevented from directly contacting the yoke arm after the pressing plate 30 is added, and the rear end of the pressing plate 30 can slide along the inner end of the movable plate 15, so that the impact force transmitted from the pressing plate 30 to the movable plate 15 can be remarkably relieved, and the movable plate 15 is effectively protected. In this embodiment, an arc-shaped lubricating sheet 35 is further disposed on a surface of the inner end of the movable plate 15 contacting the pressure plate 30, and the lubricating sheet 35 is a stainless steel sheet, which can play a role in lubrication and protection, and reduce wear between the pressure plate 30 and the movable plate 15.

On the basis, an elastic buffer pad 34 is arranged on one surface of the pressure plate 30, which is in contact with the fork arms, and the buffer pad 34 can absorb the impact force of the fork arms to protect the pressure plate 30 and avoid the impact sound between the pressure plate 30 and the fork arms.

As shown in fig. 7, a hollow insertion frame 32 is provided at the rear end of the pressing plate 30, the insertion frame 32 extends to the rear of the pressing plate 30, an insertion piece 31 is provided at the inner end of the movable plate 15, the insertion piece 31 is bent toward the pressing plate 30, and a path formed by the insertion piece 31 as the movable plate 15 swings and a path formed by the insertion frame 32 as the pressing plate 30 swings overlap each other.

When the pressing plate 30 pushes the movable plate 15 rearward, both the pressing plate 30 and the movable plate 15 swing rearward; when swinging backwards to a certain angle, the head end of the inserting sheet 31 penetrates into the inserting frame 32; then, as the pressing plate 30 and the movable plate 15 continue to swing backward, the inserting piece 31 gradually passes through the inserting frame 32; when the tail end of the inserting piece 31 contacts with the inserting frame 32, the pressing plate 30, the movable plate 15 and the side portion of the inserting sleeve 7 form a stable triangular structure, and at this time, neither the pressing plate 30 nor the movable plate 15 can continuously swing backwards, so that the swing amplitude of the movable plate 15 can be limited. The brake 8 is prevented from being damaged due to the fact that the pull wire 17 is excessively pulled forwards due to the fact that the swing amplitude of the movable plate 15 is too large.

When the yoke is disengaged from the socket 7, the pressure plate 30 and the movable plate 15 are locked at the current angle and the material rack is locked.

When the material frame is unlocked, the pedal 23 is stepped downwards, the rotating disc 11 is unlocked, the elastic block 33 drives the pressing plate 30 to swing forwards, the swing arm 9 drives the movable plate 15 to swing forwards, the inserting pieces 31 start to gradually separate from the inserting frames 32, the inserting frames 32 apply extrusion force to the inserting pieces 31 in the process, and the extrusion force drives the movable plate 15 to swing forwards, so that extra assistance can be provided for the forward swing of the movable plate 15, the movable plate 15 can be ensured to smoothly drive the rotating disc 11 to rotate, and the reliability of unlocking reset action is improved.

Referring to fig. 8, the wire 17 of the present embodiment is a segmented structure including a front segment line 1701 and a rear segment line 1702. The front end of the front section line 1701 is fixedly connected with the outer end of the movable plate 15, a front connecting sleeve 36 is arranged at the rear end of the front section line 1701, a front connecting block 38 is arranged in the front connecting sleeve 36, a front through hole 39 is arranged at the front end of the front connecting sleeve 36, and the rear end of the front section line 1701 penetrates through the front through hole 39 and is connected with the front connecting block 38; the rear end of the rear section line 1702 is connected with the transmission rod 10, a rear connecting sleeve 37 is arranged at the front end of the rear section line 1702, a rear connecting block 40 is arranged in the rear connecting sleeve 37, a rear through hole 41 is arranged at the rear end of the rear connecting sleeve 37, and the front end of the rear section line 1702 passes through the rear through hole 41 and is connected with the rear connecting block 40; the rear end of the front connecting sleeve 36 is screwed with the front end of the rear connecting sleeve 37.

After the material frame is used for a long time, when the stay wire 17 is loosened, the front connecting sleeve 36 and the rear connecting sleeve 37 are rotated relatively by screwing to adjust the tightness of the stay wire 17, and the normal use of the brake function is ensured.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a novel material frame of convenient operation, includes frame and bottom plate, is provided with a pair of contra-rotating front wheel and a pair of rear wheel in the below of bottom plate, is provided with a pair of parallel plug bush, characterized by in the bottom surface of bottom plate: the two groups of rear wheels are respectively provided with a brake, the brake is provided with an automatic return type swing arm for controlling braking and brake loosening, the front end of the plug bush is funnel-shaped, the side wall of the front part of one group of the plug bush is provided with an opening, a movable plate capable of swinging back and forth is arranged in the opening, the inner end of the movable plate extends into the inner side of the front part of the plug bush, the outer end of the movable plate extends out of the plug bush, the movable plate is obliquely arranged to enable the outer end of the movable plate to be close to the front end surface of the plug bush, a transmission rod is arranged between the two groups of brakes, the two ends of the transmission rod are respectively connected with the end parts of the two groups of the swing arms in a rotating mode, a horizontal rotating disc is arranged at the part, close to the outer end of the movable plate, on the outer side of the plug bush, the rotating disc is connected with the bottom plate in a rotating mode, a connecting rod is arranged between the rotating disc and the movable plate, the two ends of the connecting rod are respectively hinged with the outer ends of the rotating disc and the movable plate, and the outer side part of the plug bush is provided with a pull wire along the front and back direction of the material rack, the front end of the pull wire is connected with the outer end of the movable plate, the rear end of the pull wire is connected with the transmission rod, the front end of the rotary plate is provided with a pedal, the pedal protrudes out of the front of the bottom plate, the pedal is rotatably connected with the rotary plate and can swing up and down, a positioning block is arranged on the front edge of the bottom plate and behind the pedal, the edge of the positioning block is in a circular arc shape coaxial with the rotary plate, a plurality of concave positioning grooves are uniformly arranged on the edge of the positioning block along the circumferential direction of the positioning block, a telescopic clamping block is arranged on the pedal, the positioning grooves are located on a path along which the clamping block rotates along with the rotary plate, the positioning grooves are used for the clamping block to enter, and one surface of the end part of the clamping block, which deviates from the movable plate, is an arc surface.

2. The novel material shelf of claim 1, which is convenient to operate, and is characterized in that: the pedal is characterized in that an accommodating cavity is formed in the pedal, the fixture block is arranged in the accommodating cavity and can slide back and forth, a limiting block is arranged on the side portion of the fixture block, and a spring used for driving the fixture block to stretch out is arranged in the accommodating groove.

3. The novel material shelf of claim 1, which is convenient to operate, and is characterized in that: the inner end of the movable plate is bent backwards.

4. The novel material shelf of claim 1, which is convenient to operate, and is characterized in that: the movable plug is characterized by further comprising a pressing plate, the pressing plate is arranged in the plug bush and located in front of the movable plate, the front end of the pressing plate is rotatably connected with the inner wall of the plug bush, the rear end of the pressing plate is in contact with the inner end of the movable plate, an elastic block is arranged between the front end of the pressing plate and the inner wall of the plug bush, and two surfaces of the elastic block are respectively fixedly bonded with the inner wall of the plug bush and the surface of the pressing plate.

5. The novel material rack convenient to operate of claim 4, wherein: an arc lubricating sheet is arranged on the surface of the inner end of the movable plate, which is contacted with the pressure plate.

6. The novel material shelf convenient to operate of claim 4, characterized by: and an elastic buffer pad is arranged on one surface of the pressing plate, which is contacted with the fork arm.

7. The novel material rack convenient to operate of claim 4, wherein: the rear end of clamp plate is provided with hollow frame that alternates, it extends to the rear of clamp plate to alternate the frame, the inner of fly leaf is provided with wears the inserted sheet, it is crooked towards the clamp plate to wear the inserted sheet, it has the coincidence position along with the route that the fly leaf swing formed and the route that the frame that alternates formed along with the clamp plate swing of inserted sheet.

8. The novel material shelf of claim 1, which is convenient to operate, and is characterized in that: the utility model discloses a bracing wire, including preceding section line and back end line, the front end of preceding section line is connected fixedly with the outer end of fly leaf, the rear end of preceding section line is provided with preceding adapter sleeve, be provided with preceding connecting block in the preceding adapter sleeve, the front end of preceding adapter sleeve is provided with preceding through-hole, the rear end of preceding section line passes preceding through-hole and is connected with preceding connecting block, the rear end and the transfer line of back end line are connected, the front end of back end line is provided with back adapter sleeve, be provided with the back connecting block in the back adapter sleeve, the rear end of back adapter sleeve is provided with the back through-hole, the front end of back end line passes the back through-hole and is connected with the back connecting block, the rear end of preceding adapter sleeve and the front end threaded connection of back adapter sleeve.