CN218365696U

CN218365696U - Self-cleaning type mobile foam concrete preparation device

Info

Publication number: CN218365696U
Application number: CN202222628920.0U
Authority: CN
Inventors: 尹哲学; 吴滨
Original assignee: Changzhou Yineng Technology Co ltd
Current assignee: Changzhou Yineng Technology Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2023-01-24
Anticipated expiration: 2032-10-08

Abstract

The utility model relates to a self-cleaning type mobile preparation device for foam concrete, which is provided with a mobile base, a frame is fixedly arranged on the mobile base, a charging basket is arranged on the mobile base, a medicine box is fixedly arranged on the charging basket, a medicine pump is arranged in the medicine box, and a medicine guide pipe is arranged at the outlet of the medicine pump; be equipped with the stirring subassembly in the frame, the bottom of storage bucket still is equipped with clean subassembly, clean subassembly includes the clean case, the scavenging pump, and the catheter, be equipped with the mounting groove on the clean case, the mounting groove internal rotation is equipped with the connecting plate, be equipped with the connecting block on the connecting plate, the fixed flat head that is equipped with in bottom of (mixing) shaft, be equipped with the slot on the connecting block, be equipped with the passageway of intaking on the connecting block, be equipped with the drain passageway on the (mixing) shaft, the fixed a plurality of clean ring pipes that are equipped with on the outer wall of (mixing) shaft, all be equipped with the water service pipe way in each clean ring pipe, be equipped with a plurality of clean holes on each clean ring pipe. The utility model discloses the structure is ingenious, convenient practical.

Description

Self-cleaning type mobile foam concrete preparation device

Technical Field

The utility model relates to a foam concrete preparation field, in particular to automatically cleaning formula foam concrete removes preparation facilities.

Background

The foam concrete is a novel thermal insulation material containing a large number of closed air holes, which is formed by fully foaming a foaming agent in a mechanical mode through a foaming system of a foaming machine, uniformly mixing the foam with cement slurry, then performing cast-in-place construction or mold forming through a pumping system of the foaming machine and performing natural curing; the foam concrete is a double-sleeve continuous structure polymer of organic cementing material stirred by water, foaming agent, cement, fly ash/stone powder and the like, and contains uniform air holes; the foam concrete is an energy-saving material used for roof heat preservation slope finding, ground heat preservation cushion layer, upturned beam foundation pit filling, wall body pouring and the like.

The existing equipment for manufacturing the foam concrete is too large, the foam concrete needs to be prepared at fixed points and then discharged through a pump and a long pipeline, the concrete and a foaming agent need to be continuously stirred in the process of preparing the foam concrete, the foam concrete can be adhered to a stirring blade and a stirring shaft in the stirring process, and the stirring blade and the stirring shaft need to be cleaned when the next foam concrete with different concentrations is prepared;

the existing cleaning mode is that manual disassembly or external access water pipes clean the shafts and blades of stirring, but such cleaning mode has lower cleaning efficiency, and the large volume and the heavy mass of the shafts and the blades of stirring under the common condition are heavier, the disassembly process wastes time and labor, the water pipes accessed from the outside cannot completely clean the blades because of the problem of water pressure, the quality and the concentration of next foam concrete preparation can be influenced, and the cleaning mode is very inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a preparation facilities is removed to automatically cleaning formula foam concrete, not only can be quick mix concrete and foamer, can also carry out quick cleanness to the stirring subassembly after using the completion to guarantee that the storage bucket is holistic clean and tidy, the structure is ingenious, and is high-efficient practical.

Realize the utility model discloses the technical scheme of purpose is: the utility model has a movable base, a frame is fixedly arranged on the movable base, a charging basket for containing concrete is arranged on the movable base, a medicine box for containing foaming agent is fixedly arranged on the charging basket, a medicine pump is arranged in the medicine box, a medicine guide pipe is arranged at the outlet of the medicine pump, and the foaming agent in the medicine box is guided into the charging basket by the driving of the medicine pump and the medicine guide pipe; the stirring assembly comprises a lifting cylinder fixed on the frame, a driving motor fixed at the telescopic end of the lifting cylinder, a stirring shaft fixed at the output end of the driving motor, and a plurality of stirring blades circumferentially distributed on the stirring shaft along the axis of the stirring shaft, a discharge port is arranged in the charging bucket, a discharge pump is fixedly arranged on the movable base, the inlet of the discharge pump is connected with the discharge port through a pipeline, a discharge pipe is fixedly arranged at the outlet of the discharge pump, the discharge pipe is detachably clamped on the rack, the bottom of the charging bucket is also provided with a cleaning component which can clean the stirring component, the cleaning component comprises a cleaning box fixed at the bottom of the charging bucket, a cleaning pump fixed in the cleaning box and a liquid guide pipe fixed at the outlet of the cleaning pump, the cleaning box is provided with a mounting groove, a connecting plate is rotationally arranged in the mounting groove, the connecting plate is provided with a connecting block, a flat head is fixedly arranged at the bottom of the stirring shaft, a slot for the flat head to insert is arranged on the connecting block, the connecting block is provided with a water inlet channel communicated with the slot, the water inlet end of the water inlet channel is connected with the liquid guide pipe, the stirring shaft is provided with a liquid guide channel which can be communicated with the water inlet channel after the flat head is inserted into the slot, the outer wall of the stirring shaft is fixedly provided with a plurality of cleaning ring pipes which are coaxially arranged with the stirring shaft, each cleaning ring pipe is internally provided with a water pipeline, each water pipeline is communicated with the liquid guide channel in the stirring shaft, each cleaning ring pipe is provided with a plurality of cleaning holes communicated with the water pipeline, after the flat head on the stirring shaft is inserted into the slot, the liquid guide pipe guides the cleaning liquid into the water inlet channel and the water pipeline through the cleaning pump, and the cleaning liquid is sprayed out from the cleaning hole to clean the stirring blade and the stirring shaft.

Further, the fixed connecting rod that is equipped with a plurality of vertical settings on the above-mentioned connecting plate, still be equipped with the connecting block on the connecting plate, the fixed lift groove that is equipped with a plurality ofly and corresponds and can supply the connecting rod to stretch into with each connecting rod in the bottom of connecting block, each lift inslot all is equipped with reset spring, each reset spring is all established on the connecting rod that corresponds, each reset spring's both ends respectively with lift groove and connecting rod fixed connection, the connecting block passes through the cooperation in each connecting rod and lift groove, and reset spring's the application of force that lasts goes up and down to be connected on the connecting plate.

Further, be equipped with the annular slide rail with the coaxial setting of mounting groove in the above-mentioned mounting groove, the fixed complex annular slider that is equipped with in bottom of connecting plate can correspond with annular slide rail, and the connecting plate rotates through the cooperation of each annular slider and annular slide rail to be connected in the mounting groove, be equipped with the through-hole that can supply the catheter to pass on the connecting plate, the fixed installation cavity that is equipped with inhalant canal intercommunication in bottom of connecting block, the fixed installation bearing that is equipped with in installation cavity, the catheter passes the through-hole and fixes back and inhalant canal intercommunication on the installation bearing.

Further, the upper end of above-mentioned mounting groove is equipped with and just can prevent the cowl who pops out with cleaning box integrated into one piece, cowl and the coaxial setting of connecting block and cowl's internal diameter are less than the external diameter of connecting block and are greater than the length of slot, the upper end of connecting block is equipped with a plurality of rollers that can lean on the pressure to the lower bottom surface of cowl, and connecting block reset spring's the application of force that lasts is leaned on the pressure on cowl.

Further, the fixed fixing base that is equipped with three axis circumference distribution on moving the base along the storage bucket that is equipped with on the above-mentioned moving base, all fixed being equipped with the pivot on each fixing base, it is equipped with the clamp plate that leans on of pressing to the outer wall of storage bucket to rotate on each fixing base, each leans on all fixed being equipped with the turning block on the clamp plate, all be equipped with the through-hole that can supply the pivot to pass on each turning block, all be equipped with the torsional spring in each through-hole, the one end of torsional spring is fixed in the pivot, the other end of torsional spring is fixed on the through-hole, each leans on the cooperation of clamp plate through pivot and through-hole, and the continuous application of force of torsional spring compresses tightly the storage bucket.

The utility model discloses has positive effect: (1) The utility model discloses a bottom at the storage bucket sets up clean subassembly, the cooperation through the flat head of (mixing) shaft bottom and slot realizes inserting soon of (mixing) shaft and connecting block, and when can not once only insert the heavy groove, also can drive in the rotation of flat head inserts the slot through driving motor, the flat head inserts the water channel behind the slot, drain passage and water service pipe intercommunication, each clean hole on each clean ring canal can realize washing away and rinsing to (mixing) shaft and stirring vane's each angle, thereby guaranteed that can be comprehensive to the (mixing) shaft, the inner wall of stirring vane and storage bucket cleans, on the one hand through the setting of the fast structure of inserting of (mixing) shaft and connecting block and with inhalant canal, drain passage and water service pipe intercommunication, the effectual problem that needs to dismantle among the prior art or let in outside water source clean and the cleanness that leads to is incomplete and efficiency is lower is solved, on the other hand through each clean pore pair (mixing) on the clean ring canal, the inner wall of stirring vane and storage bucket carries out all-roundly, the cleanness of no dead angle, thereby clean high efficiency and full-face have been guaranteed, also be the precision of foam preparation when using next time simultaneously, the high-efficiency is ingenious, the foundation structure is established.

(2) The utility model discloses a set up a plurality of connecting rods on the connecting plate, set up a plurality of lift grooves that correspond with each connecting rod on the connecting block, the connecting block passes through the lifter and is connected with the connecting plate lift with the cooperation in each lift groove, reset spring on the connecting rod can effectually offset the pressure of flat head to the connecting block on the one hand at the in-process of inserting soon, on the other hand also can carry out the application of force to the connecting block after the flat head inserts the slot and support, the cooperation of lifter and lift groove simultaneously with guaranteed the stability of connecting block at the lift in-process, convenient practicality.

(3) The utility model discloses a set up the annular slide rail in the mounting groove, set up the annular slider in the bottom of connecting plate, the smooth and easy rotation of connecting plate has been guaranteed in the cooperation of annular slide rail and annular slider, and the installation bearing of installation intracavity simultaneously also can guarantee that the catheter can not twisted badly at the pivoted in-process, has guaranteed on the one hand that connecting plate pivoted is smooth and easy, and on the other hand has also guaranteed the stability of connecting plate and connecting block, and is stable practical.

(4) The utility model discloses a set up cowl in the upper end of mounting groove to set cowl's internal diameter to the external diameter that is less than the connecting block, can effectually avoid in the in-process foam concrete of stirring to flow into the mounting groove on the one hand, on the other hand also can effectually guarantee that the connecting block can not pop out by reset spring's effect, each roller on the connecting block in addition can avoid cowl and the upper end of connecting block to take place hard friction, convenient practicality.

(5) The utility model discloses a set up the fixing base on removing the base, set up the pivot on the fixing base, guaranteed through the cooperation of pivot and through-hole to be connected by the rotation of clamp plate with the pivot to the application of force leans on the pressure to the storage bucket through the continuation of torsional spring, thereby guaranteed the stability of storage bucket, high-efficient practical.

Drawings

In order that the manner in which the above recited features of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings

FIG. 1 is a front view of the overall structure of the mobile self-cleaning foam concrete preparation apparatus of the present invention;

FIG. 2 is a schematic view of the connection structure of the stirring assembly and the cleaning assembly of the present invention;

FIG. 3 is a sectional view showing the overall structure of the cleaning tank of the present invention;

fig. 4 is a cross-sectional view of the connection structure of the pressing plate and the fixing base of the present invention.

Detailed Description

Referring to fig. 1 to 4, the utility model has a movable base 1, a frame 2 is fixedly arranged on the movable base 1, a charging bucket 4 for containing concrete is arranged on the movable base 1, a medicine box 5 for containing foaming agent is fixedly arranged on the charging bucket 4, a medicine pump 51 is arranged in the medicine box 5, a medicine guide pipe 52 is arranged at the outlet of the medicine pump 51, and the foaming agent in the medicine box 5 is guided into the charging bucket 4 through the driving of the medicine pump 51 and the medicine guide pipe 52; the stirring assembly capable of stirring concrete and foaming agent in the charging basket 4 is arranged on the frame 2, and comprises a lifting cylinder 21 fixed on the frame 2, a driving motor 22 fixed at the telescopic end of the lifting cylinder 21, a stirring shaft 23 fixed at the output end of the driving motor 22, and a plurality of stirring blades 24 distributed on the stirring shaft 23 along the axial circumference array of the stirring shaft 23, wherein a discharging port is arranged in the charging basket 4, a discharging pump 11 is fixedly arranged on the movable base 1, the inlet of the discharging pump 11 is connected with the discharging port through a pipeline, a discharging pipe 12 is fixedly arranged at the outlet of the discharging pump 11, and the discharging pipe 12 is detachably clamped on the frame 2;

the frame 2 is provided with a clamping sleeve capable of fixing the discharge pipe 12, the discharge pipe 12 can be fixedly clamped in the clamping sleeve when not in use, an operator can directly overcome the force of the clamping sleeve to take out the discharge pipe when in use, and a spray head can be arranged on the discharge pipe 12 as required to refine spray materials;

the bottom of the charging bucket 4 is further provided with a cleaning component 6 capable of cleaning the stirring component, the cleaning component 6 comprises a cleaning box 61 fixed at the bottom of the charging bucket 4, a cleaning pump 62 fixed in the cleaning box 61, and a liquid guide tube 63 fixed at an outlet of the cleaning pump 62, the cleaning box 61 is provided with a mounting groove 60, a connecting plate 64 is rotatably arranged in the mounting groove 60, a connecting block 65 is arranged on the connecting plate 64, the bottom of the stirring shaft 23 is fixedly provided with a flat head 25, the connecting block 65 is provided with a slot 69 into which the flat head 25 can be inserted, the connecting block 65 is provided with a water inlet channel 26 communicated with the slot 69, a water inlet end of the water inlet channel 26 is connected with the liquid guide tube 63, the stirring shaft 23 is provided with a liquid guide channel 27 capable of being communicated with the water inlet channel 26 after the flat head 25 is inserted into the slot 69, the outer wall of the stirring shaft 23 is fixedly provided with a plurality of cleaning rings 7 coaxially arranged with the stirring shaft 23, each cleaning ring 7 is provided with a water passage 71, each water passage 71 is communicated with the water guide channel 27 in the stirring shaft 23, each cleaning ring 7 is provided with a plurality of cleaning holes 72 communicated with the cleaning pipe 71, the cleaning ring 72, the cleaning pump 25 is inserted into the cleaning ring 63, the cleaning pump 23, and the cleaning blade 24 is sprayed out from the cleaning shaft 24.

A plurality of vertically arranged connecting rods 641 are fixedly arranged on the connecting plate 64, a connecting block 65 is further arranged on the connecting plate 64, a plurality of lifting grooves 613 which correspond to the connecting rods 641 and can be used for the connecting rods 641 to stretch into are fixedly arranged at the bottom of the connecting block 65, a return spring 642 is arranged in each lifting groove 613, each return spring 642 is sleeved on the corresponding connecting rod 641, two ends of each return spring 642 are fixedly connected with the lifting grooves 613 and the connecting rods 641 respectively, and the connecting block 65 is connected to the connecting plate 64 in a lifting mode through the matching of the connecting rods 641 and the lifting grooves 613 and the continuous force application of the return springs 642.

Be equipped with the annular slide rail 66 with the coaxial setting of mounting groove 60 in the mounting groove 60, be equipped with a plurality ofly in the bottom of connecting plate 64 is fixed and to correspond complex annular slider 67 with annular slide rail 66, and connecting plate 64 rotates through the cooperation of each annular slider 67 and annular slide rail 66 and connects in mounting groove 60, be equipped with the through-hole that can supply catheter 63 to pass on the connecting plate 64, the fixed installation cavity that is equipped with inhalant canal 26 intercommunication in bottom of connecting block 65, the fixed installation bearing 68 that is equipped with in installation cavity, catheter 63 pass the through-hole and fix on installation bearing 68 after and communicate with inhalant canal 26.

The upper end of mounting groove 60 is equipped with arc-shaped baffle 611 with clean case 61 integrated into one piece and can prevent that connecting block 65 from popping up, arc-shaped baffle 611 and the coaxial setting of connecting block 65 and arc-shaped baffle 611's internal diameter are less than the external diameter of connecting block 65 and are greater than the length of slot 69, the upper end of connecting block 65 is equipped with a plurality of roller 612 that can lean on the lower bottom surface of arc-shaped baffle 611 and presses, and the last application of force of connecting block 65 reset spring 642 leans on arc-shaped baffle 611.

The section of the cleaning tank 61 is trapezoidal, and the side surface of the cleaning tank 61 is set to be an inclined surface, so that the cleaned sewage can be effectively guided to flow to the bottom and be discharged.

Remove the fixed fixing base 3 that is equipped with three axis circumference distribution on moving base 1 along storage bucket 4 on the base 1, all fixed pivot 33 that is equipped with on each fixing base 3, it is equipped with the clamp plate 32 that leans on pressing to the outer wall of storage bucket 4 to rotate on each fixing base 3, each leans on all fixed turning block 31 that is equipped with on the clamp plate 32, all be equipped with the through-hole that can supply pivot 33 to pass on each turning block 31, all be equipped with torsional spring 34 in each through-hole, the one end of torsional spring 34 is fixed on pivot 33, the other end of torsional spring 34 is fixed on the through-hole, each leans on clamp plate 32 through the cooperation of pivot 33 with the through-hole, and torsional spring 34's the continuous application of force compresses tightly storage bucket 4.

The utility model discloses a theory of operation: when the utility model is used, the operator controls the lifting cylinder 21 to drive the flat head 25 on the stirring shaft 23 to descend, the flat head 25 is directly inserted into the slot 69 on the connecting block 65, if the flat head 25 can not be inserted into the slot 69 at one time, the flat head 25 can be driven to press the connecting block 65 first, then the driving motor 22 is controlled to rotate slowly, the stirring shaft 23 and the flat head 25 on the stirring shaft 23 start to rotate under the driving of the driving motor 22, and the flat head 25 is inserted into the slot 69 in the rotating process, the connecting block 65 resets under the action of the reset spring 642, then the concrete is poured into the charging basket 4, the medicine pump 51 is started, the foaming agent is injected into the charging basket 4, the operator controls the driving motor 22 to start to rotate with higher speed, the stirring shaft 23 drives the stirring blades 24 to rotate in the rotating process, and the concrete and the foaming agent are mixed, after mixing, discharging the mixed foam concrete through the discharging pump 11, after all the foam concrete is discharged, starting the cleaning pump 62, leading the cleaning solution into the water inlet channel 26 through the liquid guide pipe 63, entering the liquid guide channel 27 along the water inlet channel 26, sequentially decreasing the inner diameters of the water inlet channel 26 and the liquid guide channel 27, sequentially entering the water inlet channel 26, the liquid guide channel 27 and the water pipeline 71 to increase the water pressure, spraying the cleaning solution through the cleaning holes 72 to clean the stirring blades 24, and discharging the cleaning solution under the driving of the discharging pump 11 after cleaning, so that the foam concrete can be efficiently prepared and movably poured, and simultaneously the inner walls of the stirring shaft 23, the stirring blades 24 and the charging basket 4 can be rapidly and efficiently cleaned after pouring, thereby ensuring the cleanliness of the inner walls of the stirring shaft 23, the stirring blades 24 and the charging basket 4, the structure is ingenious, and the efficiency is practical.

The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The self-cleaning type mobile foam concrete preparation device is provided with a mobile base, a rack is fixedly arranged on the mobile base, a charging basket for containing concrete is arranged on the mobile base, a medicine box for containing foaming agent is fixedly arranged on the charging basket, a medicine pump is arranged in the medicine box, a medicine guide pipe is arranged at the outlet of the medicine pump, and the foaming agent in the medicine box is guided into the charging basket by the driving of the medicine pump and the medicine guide pipe; be equipped with in the frame and carry out the stirring subassembly that stirs to concrete and foamer in the storage bucket, the stirring subassembly is including fixing lift cylinder in the frame, fixing at the driving motor of the flexible end of lift cylinder, fixing at the (mixing) shaft of driving motor's output and a plurality of stirring vane that distributes at the (mixing) shaft along the axis circumference array of (mixing) shaft, be equipped with the discharge gate in the storage bucket, remove and fixedly on the base and be equipped with the discharge pump, the import of discharge pump passes through the pipeline and is connected with the discharge gate, and the fixed discharging pipe that is equipped with in export of discharge pump, the detachable joint of discharging pipe is in the frame, its characterized in that: the bottom of the charging bucket is also provided with a cleaning component capable of cleaning the stirring component, the cleaning component comprises a cleaning box fixed at the bottom of the charging bucket, a cleaning pump fixed in the cleaning box and a liquid guide pipe fixed at the outlet of the cleaning pump, a mounting groove is formed in the cleaning box, a connecting plate is arranged in the mounting groove in a rotating mode, a connecting block is arranged on the connecting plate, a flat head is fixedly arranged at the bottom of the stirring shaft, a slot into which the flat head can be inserted is formed in the connecting block, a water inlet channel communicated with the slot is formed in the connecting block, the water inlet end of the water inlet channel is connected with the liquid guide pipe, a liquid guide channel communicated with the water inlet channel after the flat head is inserted into the slot is formed in the stirring shaft, a plurality of cleaning ring pipes coaxially arranged with the stirring shaft are fixedly arranged on the outer wall of the stirring shaft, a water passage is formed in each cleaning ring pipe, each water passage is communicated with the liquid guide channel in the stirring shaft, a plurality of cleaning holes communicated with the water passage are formed in each cleaning ring pipe, and after the flat head on the stirring shaft is inserted into the slot, the cleaning ring pipe, and the stirring shaft is sprayed out from the cleaning holes to clean the stirring blades and the liquid guide pipe.

2. The mobile self-cleaning foam concrete production unit as recited in claim 1, wherein: the fixed connecting rod that is equipped with a plurality of vertical settings on the connecting plate, still be equipped with the connecting block on the connecting plate, the fixed lifting groove that is equipped with a plurality ofly and corresponds and can supply the connecting rod to stretch into with each connecting rod in the bottom of connecting block, each lifting inslot all is equipped with reset spring, each reset spring is all established on the connecting rod that corresponds, each reset spring's both ends respectively with lifting groove and connecting rod fixed connection, the connecting block passes through the cooperation in each connecting rod and lifting groove, and reset spring's the continuous application of force goes up and down to connect on the connecting plate.

3. The mobile self-cleaning foam concrete production unit as recited in claim 2, wherein: the liquid guiding device is characterized in that annular slide rails which are coaxial with the mounting groove are arranged in the mounting groove, a plurality of annular slide blocks which can be matched with the annular slide rails in a corresponding mode are fixedly arranged in the bottom of the connecting plate, the connecting plate is rotatably connected in the mounting groove through the matching of the annular slide blocks and the annular slide rails, through holes through which liquid guiding pipes can pass are formed in the connecting plate, a mounting cavity communicated with the water inlet channel is fixedly formed in the bottom of the connecting block, mounting bearings are fixedly arranged in the mounting cavity, and the liquid guiding pipes pass through the through holes and are fixedly communicated with the water inlet channel after being fixed on the mounting bearings.

4. The mobile preparation device for self-cleaning foam concrete according to claim 3, characterized in that: the upper end of mounting groove is equipped with and just can prevent the cowl that the connecting block popped out with dustbin integrated into one piece, cowl and the coaxial setting of connecting block and cowl's internal diameter are less than the external diameter of connecting block and are greater than the length of slot, the upper end of connecting block is equipped with a plurality of rollers that can lean on the pressure to the lower bottom surface of cowl, and connecting block reset spring's the application of force that lasts is leaned on and presses on cowl.

5. The mobile self-cleaning foam concrete production unit as recited in claim 1, wherein: the fixed three fixing base that distributes on removing the base along the axis circumference of storage bucket that is equipped with on removing the base, all fix on each fixing base and be equipped with the pivot, it can lean on the clamp plate that leans on of pressing to the outer wall of storage bucket to rotate to be equipped with on each fixing base, each leans on all to fix on the clamp plate and is equipped with the turning block, all be equipped with the through-hole that can supply the pivot to pass on each turning block, all be equipped with the torsional spring in each through-hole, the one end of torsional spring is fixed in the pivot, the other end of torsional spring is fixed on the through-hole, each leans on the clamp plate to compress tightly the storage bucket through the cooperation of pivot with the through-hole, and the continuous application of force of torsional spring.