CN110421719B - Dustproof concrete mixer that building engineering used - Google Patents

Abstract

The invention belongs to the field of mixers, and particularly relates to a dustproof concrete mixer for constructional engineering, which comprises a bottom plate, a mixing tank, a dustproof cover mechanism, a first bearing mechanism, a second bearing mechanism and the like, wherein the first bearing mechanism and the second bearing mechanism are symmetrically arranged on two sides of the upper end surface of the bottom plate; in the whole stirring process, the dustproof cover mechanism is always in an automatic closing state; the dust fog of the materials is ensured to be sealed in the stirring barrel to the maximum extent, the pollution of the dust fog to the environment is avoided, the health of workers is further ensured, and the cost of the whole production process is reduced to the maximum extent; the whole dustproof cover mechanism is light in material, and the whole mechanism adjusts the closing of the dustproof cover through the gravity center position of the weight, namely the whole dustproof cover mechanism realizes the closing of the dustproof cover by adjusting the gravity center position of the whole dustproof cover mechanism relative to the first pin; the closing speed of the dust cover is not very high, and the impact force generated during closing is not very high, so that the safety of operators is further ensured.

Description

Dustproof concrete mixer that building engineering used

Technical Field

The invention belongs to the field of mixers, and particularly relates to a dustproof concrete mixer for constructional engineering.

Background

At present, the traditional stirring machine is a forced stirring machine with a stirring barrel rotating or a stirring barrel not rotating and a blade rotating, and for the forced stirring machine with higher efficiency, dust pollution is a main pollution type in the stirring process due to the rotation of the blade. Most of the mixing tanks lack dust prevention measures during the mixing process, so that dust fog pollutes the environment and irreparably damages the health of workers during the mixing process.

The invention designs a dustproof concrete mixer suitable for a forced mixer, which solves the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a dustproof concrete mixer for constructional engineering, which is realized by adopting the following technical scheme.

The utility model provides a dustproof concrete mixer that building engineering used which characterized in that: the stirring device comprises a bottom plate, a supporting block, a stirring barrel, a shaft hole, a material conical barrel, a supporting lug, a first pin hole, a second pin, a dustproof cover mechanism, a fixing ring, a spoke rod, a shaft sleeve, a stirring shaft, a stirring blade, a motor, a base, a first bearing mechanism and a second bearing mechanism, wherein the bottom plate is fixed on the ground; the first bearing mechanism and the second bearing mechanism are symmetrically arranged on two sides of the upper end surface of the bottom plate; the center of the bottom of the stirring barrel is provided with a shaft hole; the material conical barrel is connected with the barrel opening of the stirring barrel through a small barrel opening of the material conical barrel; the two support lugs are arranged on the outer circular surface of the large cylinder opening of the material conical cylinder; a first through pin hole is formed between the two support lugs; the dustproof cover mechanism is connected with the two support lugs through a first pin; the outer circular surface of the fixing ring is embedded into the stirring barrel, and the outer circular surface of the fixing ring is fixedly connected with the inner circular surface of the stirring barrel; the fixing ring is positioned at one end of the inner circle surface of the stirring barrel close to the barrel opening; the stirring shaft is positioned in the stirring barrel, and one end of the stirring shaft penetrates through a shaft hole at the bottom of the stirring barrel; the stirring shaft is matched with the shaft hole through a bearing; one end of the stirring shaft close to the opening of the stirring barrel is positioned in the fixed ring; a shaft sleeve is arranged at one end of the stirring shaft close to the barrel opening of the stirring barrel; the outer circular surface of the shaft sleeve is fixedly connected with the inner circular surface of the fixing ring through four radial rods, and the four radial rods are uniformly distributed along the circumferential direction of the outer circular surface of the shaft sleeve; the two stirring blades are circumferentially and uniformly arranged on the outer circular surface of the stirring shaft; the base is arranged on the outer side of the bottom of the stirring barrel; the motor is arranged on the base, and a rotating shaft of the motor is connected with one end of the stirring shaft, which extends out of the shaft hole; the two second pins are circumferentially and uniformly arranged on the outer circular surface of the stirring barrel; the stirring barrel is arranged between the first bearing mechanism and the second bearing mechanism through two second pins; the supporting shoe is placed on the bottom plate, and the supporting shoe cooperatees with the agitator.

The dustproof cover mechanism comprises a connecting block, a second pin hole, a first hydraulic shell, a first hydraulic cavity, a first hydraulic hole, a heavy block, a reset spring, a dustproof cover and a first pin, wherein the first hydraulic cavity is formed in the first hydraulic shell; a first hydraulic hole is formed in the end face of one end of the first hydraulic shell and communicated with the first hydraulic cavity; the weight is arranged in the first hydraulic cavity; the reset spring is positioned in the first hydraulic cavity, and two ends of the reset spring are respectively connected with the inner wall of the first hydraulic cavity and the heavy block; a second pin hole is formed in the connecting block; the connecting block is arranged on one side surface of the first hydraulic shell through one end of the connecting block, and the central axis of the second pin hole is vertical to the central axis of the first hydraulic hole; the dustproof cover is fixedly connected with one side surface, provided with the connecting block, of the first hydraulic shell through one end surface, and the dustproof cover is positioned on the lower side of the connecting block; the connecting block is arranged between the two support lugs through a first pin; the dust cover is matched with the opening of the material cone.

The structure of the first bearing mechanism and the structure of the second bearing mechanism are symmetrical about the central plane of the stirring barrel, and the first bearing mechanism comprises a bearing block, a passing groove, a sliding groove, a hydraulic pipe hole, a limiting groove, a sliding block, a third pin hole, a hydraulic column, a piston block, a second hydraulic shell, a column hole, a second hydraulic cavity, a second hydraulic hole, a bearing spring, a clamping block, a limiting spring, a first limiting block, a second limiting block, a third limiting block, a fourth limiting block, a first inclined plane and a second inclined plane, wherein the bearing block is provided with the sliding groove along the length direction; a through groove is formed in one side surface, close to the stirring barrel, of the bearing block along the length direction, and the through groove is communicated with the sliding groove; two side surfaces of the sliding groove, which are positioned at two sides of the through groove, are symmetrically provided with four limiting grooves, and the four limiting grooves are positioned at the upper end of the inner wall of the sliding groove; a hydraulic pipe hole is formed in one side face of the lower end of the bearing block and communicated with the sliding groove; the bearing block is arranged on the bottom plate through the lower end surface of the bearing block; a second hydraulic cavity is formed in the second hydraulic shell; a column hole is formed in the center of the upper end face of the second hydraulic shell and communicated with the second hydraulic cavity; a second hydraulic hole is formed in one side face of the lower end of the second hydraulic shell and communicated with the second hydraulic cavity; the second hydraulic shell is nested in the sliding chute and is positioned at the bottom of the sliding chute; the second hydraulic hole corresponds to a hydraulic pipe hole on the bearing block; the piston block is arranged in the second hydraulic cavity; one end of the hydraulic column penetrates through the column hole from top to bottom and is fixedly connected with the piston block; the bearing spring is positioned in the second hydraulic cavity, and two ends of the bearing spring are respectively connected with the inner wall of the second hydraulic cavity and the piston block; a third pin hole is formed in the sliding block; the sliding block is arranged in the bearing block through sliding fit with the sliding groove and is positioned at the top end of the sliding groove; the third pin hole is opposite to the through groove; the lower end face of the sliding block is fixedly connected with the upper end face of the hydraulic column; one end of the first limiting block is provided with a first inclined plane and a second inclined plane; one end of the second limiting block is provided with a first inclined plane and a second inclined plane; one end of the third limiting block is provided with a first inclined plane and a second inclined plane; one end of the fourth limiting block is provided with a first inclined plane and a second inclined plane; one end of the first limiting block, which is not provided with the first inclined plane and the second inclined plane, is inserted into a limiting groove; one end of the second limiting block, which is not provided with the first inclined plane and the second inclined plane, is inserted into a limiting groove, and the structure of the second limiting block and the structure of the first limiting block are symmetrical about the central plane of the sliding groove; the first inclined plane of the first limiting block is positioned above the second inclined plane; one end of the third limiting block, which is not provided with the first inclined plane and the second inclined plane, is inserted into a limiting groove; one end of the fourth limiting block, which is not provided with the first inclined plane and the second inclined plane, is inserted into a limiting groove, and the structure of the fourth limiting block and the structure of the third limiting block are symmetrical about the central plane of the sliding groove; the first inclined plane of the third limiting block is positioned above the second inclined plane; the third limiting block is positioned below the first limiting block; the four limiting springs are respectively positioned in the four limiting grooves; two ends of the first limiting spring are respectively connected with the inner wall of the limiting groove and the first limiting block; two ends of the second limiting spring are respectively connected with the inner wall of the limiting groove and the second limiting block; two ends of the third limiting spring are respectively connected with the inner wall of the limiting groove and the third limiting block; two ends of the fourth limiting spring are respectively connected with the inner wall of the limiting groove and the fourth limiting block; the first limiting block, the second limiting block, the third limiting block and the fourth limiting block are respectively matched with the sliding block; the fixture block is arranged on the inner wall of the sliding groove and is positioned below the third limiting block; the clamping block is matched with the sliding block; the first hydraulic hole and the second hydraulic hole are connected by a hydraulic hose, and the hydraulic hose penetrates through a hydraulic pipe hole on the corresponding bearing block; the mixing barrel is arranged between the two sliding blocks through the matching of the two second pins and the corresponding third pin holes.

As a further improvement of the technology, the mounting point of the second pin on the outer circular surface of the stirring barrel deviates from the gravity center of the stirring barrel and is close to the bottom of the stirring barrel.

As a further improvement of the technology, the stirring shaft is matched with the shaft sleeve through a bearing.

As a further improvement of the present technology, the inclination of the first inclined surface is 20 degrees, and the inclination of the second inclined surface is 45 degrees.

As a further improvement of the technology, the distance between the lower end face of the third limiting block and the upper end face of the clamping block is equal to the height of the sliding block.

As a further improvement of the present technology, the load bearing spring is a compression spring.

As a further improvement of the present technology, the return spring is a compression spring, and the elastic coefficient of the return spring is smaller than the elastic coefficient of the load bearing spring.

As a further improvement of the present technology, the limit spring is a compression spring.

As a further improvement of the technology, the first hydraulic shell is made of high-strength plastic, and the dust cover is made of common plastic.

The design purpose of the dustproof cover mechanism is that when the stirring barrel is in an empty state, the stirring barrel is in a horizontal position; the weight in the dustproof cover mechanism is positioned at the upper end of the first hydraulic shell, and the relative gravity center positions of the weight and the first pin are not on the same vertical line; at the moment, the gravity of the weight has certain torque on the whole dustproof cover mechanism around the first pin; due to the existence of the torque, the dustproof cover mechanism swings towards the opening of the material cone cylinder; the dustproof cover is tightly closed with the opening of the material cone barrel; when workers need to fill materials into the stirring barrel, the material barrel is inclined manually, and the opening of the material barrel swings upwards by about 45 degrees; at the moment, looking down on the dustproof cover mechanism, the weight in the dustproof cover mechanism is switched from one side of the first pin close to the opening of the material conical barrel to one side of the first pin close to the bottom of the stirring barrel; the position of the center of gravity of the weight relative to the first pin changes; the torque direction of the dustproof cover mechanism is changed by the gravity of the weight; at the moment, the dust cap of the torque generated by the gravity of the weight on the dust cap mechanism swings together around the first pin along with the dust cap mechanism; the dustproof cover is separated from the material conical barrel, the dustproof cover is opened, and workers wait for filling materials into the stirring barrel; when workers fill materials in the stirring barrel, the stirring barrel and the materials drive the sliding blocks in the first bearing mechanism and the second bearing mechanism to overcome the obstruction of the corresponding first limiting block, the second limiting block, the third limiting block and the fourth limiting block to slide downwards through the two second pins respectively; two sliding blocks in the first bearing mechanism and the second bearing mechanism respectively drive corresponding piston blocks to move downwards through corresponding hydraulic columns, and meanwhile, bearing springs in the first bearing mechanism and the second bearing mechanism are compressed together; hydraulic oil in the two second hydraulic shells enters the first hydraulic cavity through the corresponding hydraulic hoses; the hydraulic oil presses the weight block, so that the weight block moves from one end of the first hydraulic cavity to the other end of the first hydraulic cavity, and the return spring starts to be compressed; when the weight block slides over the position of the first pin, the dustproof cover mechanism swings towards the opening of the material conical barrel under the action of torque generated by the gravity of the weight block and covers the opening of the material conical barrel; then, manually swinging the stirring barrel to a horizontal position, and supporting the stirring barrel by a supporting block to be always in the horizontal position; starting a motor, wherein the motor drives the stirring blade to swing around the central axis of the stirring shaft through the stirring shaft; the materials are stirred, and the dust brought by the stirring of the materials is blocked in the stirring barrel by the dustproof cover, so that the working environment is not polluted by the dust, and the health of workers is further ensured; after the materials are well stirred, the supporting block is taken off, the stirring barrel is manually inclined, and the opening of the stirring barrel swings downwards by about 45 degrees; at the moment, the weight is positioned at the lower end of the first hydraulic cavity; under the action of gravity of the weight on the torque of the dustproof cover mechanism, the dustproof cover swings around the first pin relative to the stirring barrel; the dustproof cover is separated from the opening of the material cone cylinder, and the dustproof cover is opened; the stirred materials slide down from the stirring barrel to a material transport vehicle by the self gravity; when the materials completely come out of the stirring barrel, the bearing springs in the first bearing mechanism and the second bearing mechanism release energy; the bearing spring drives the corresponding sliding block to overcome the obstruction of the corresponding third limiting block, the fourth limiting block, the first limiting block and the second limiting block through the corresponding piston block and the corresponding hydraulic column and slide upwards to an initial position along the sliding groove; hydraulic oil flows from the first hydraulic cavity to the two second hydraulic cavities; under the action of the restoring force of the return spring, the weight block slides back to the upper end of the first hydraulic cavity from the lower end of the first hydraulic cavity; in the whole process that the mixing drum swings to the horizontal position, certain torque always exists on the dustproof cover mechanism by the gravity of the weight, so that the dustproof cover and the opening of the material conical barrel are closed.

The shaft sleeve, the spoke and the fixing ring are used for providing a supporting point for one end of the stirring shaft, so that the stirring shaft can rotate stably in the stirring barrel.

The first limiting block, the second limiting block, the third limiting block and the fourth limiting block as well as the first inclined plane and the second inclined plane on the first limiting block and the second limiting block are designed in such a way that if the first limiting block and the second limiting block are not limited, when a worker starts to fill materials in the material barrel, the dustproof cover is opened; continuously adding the materials, and continuously moving the stirring barrel downwards; the stirring barrel drives the piston block to move downwards through the second pin, the sliding block and the hydraulic column; the piston block enables hydraulic oil to flow from the two second hydraulic pressure cavities to the first hydraulic pressure cavity; the weight block slides from one end of the first hydraulic cavity to the other end; when the weight continuously slides and passes through the position of the first pin, the torque of the weight on the dustproof cover mechanism enables the dustproof cover to swing towards the direction of the opening of the material conical barrel and cover the opening, so that the situation that materials are continuously filled into the stirring barrel is prevented; the first inclined planes on the first limiting block and the second limiting block are matched with the sliding block; because the inclination of the first inclined plane is 20 degrees and has a certain self-locking function to the sliding block on the first inclined plane, when the stirring barrel is not filled with materials, the stirring barrel cannot overcome the obstruction of the first limiting block and the second limiting block to move downwards; when the stirring barrel is filled with materials, the stirring barrel can overcome the limitation of the first limiting block and the second limiting block to move downwards under the action of gravity; meanwhile, the first limiting block and the second limiting block shrink into the limiting groove and limit on the sliding block is removed; the limiting springs corresponding to the first limiting block and the second limiting block are compressed; the sliding block continues to slide downwards under the action of the gravity of the stirring barrel and meets two second inclined planes on the third limiting block and the fourth limiting block; because the inclination of the second inclined plane is about 45 degrees, the component force of the sliding block acting on the third limiting block and the fourth limiting block in the horizontal direction is larger, so that the third limiting block and the fourth limiting block can be easily contracted into the corresponding limiting grooves to further remove the limitation on the sliding block, the sliding block continues to slide downwards, and the bearing spring is compressed; when the sliding block just slides to the position where the third limiting block and the fourth limiting block are located, the sliding block meets the clamping block; the clamping block prevents the sliding block from continuously moving downwards; when the materials in the stirring barrel are stirred and begin to be discharged, the third limiting block and the fourth limiting block play an important role in order to ensure that the stirring barrel can discharge materials better and stably; the pressure of the stirring barrel on the piston block is continuously reduced along with the continuous outflow of the materials; the load bearing spring begins to release energy; the resultant force of the restoring force of the bearing spring and the gravity of the stirring barrel is continuously increased; the pressure of the sliding blocks in the first bearing mechanism and the second bearing mechanism on the first inclined surfaces of the corresponding third limiting block and the fourth limiting block is continuously increased; when the materials in the stirring barrel completely flow out of the stirring barrel, the pressure on the first inclined surfaces of the third limiting block and the fourth limiting block reaches the maximum; at the moment, the sliding block can overcome the limitation of the third limiting block and the fourth limiting block, so that the third limiting block and the fourth limiting block can be contracted towards the corresponding limiting grooves; the sliding block continues to slide upwards and meets a second inclined plane on the first limiting block and the second limiting block; because the inclination of the second inclined plane is 45 degrees, the component force of the sliding block on the first limiting block and the second limiting block in the horizontal direction is larger, so that the first limiting block and the second limiting block can be easily contracted into the corresponding limiting grooves to further remove the limitation on the sliding block, the sliding block continues to slide upwards, and the bearing spring is restored to the original shape; then manually swinging the stirring barrel to a horizontal position and supporting the stirring barrel by using a supporting block to keep the horizontal position so as to prepare for next material filling and stirring.

When the stirring barrel is in an empty state, the stirring barrel is in a horizontal position; the weight in the dustproof cover mechanism is positioned at the upper end of the first hydraulic shell, and the relative gravity center positions of the weight and the first pin are not on the same vertical line; at the moment, the gravity of the weight has certain torque on the whole dustproof cover mechanism around the first pin; due to the existence of the torque, the dustproof cover mechanism swings towards the opening of the material cone cylinder; the dustproof cover is tightly closed with the opening of the material cone barrel.

When workers need to fill materials into the stirring barrel, the material barrel is inclined manually, and the opening of the material barrel swings upwards by about 45 degrees; at the moment, looking down on the dustproof cover mechanism, the weight in the dustproof cover mechanism is switched from one side of the first pin close to the opening of the material conical barrel to one side of the first pin close to the bottom of the stirring barrel; the position of the center of gravity of the weight relative to the first pin changes; the torque direction of the dustproof cover mechanism is changed by the gravity of the weight; at the moment, the dust cap of the torque generated by the gravity of the weight on the dust cap mechanism swings together around the first pin along with the dust cap mechanism; the dustproof cover is separated from the material cone, the dustproof cover is opened, and workers wait for filling materials into the stirring barrel.

When workers fill materials in the stirring barrel, the stirring barrel and the materials respectively drive the two sliding blocks in the first bearing mechanism and the second bearing mechanism to overcome the obstruction of the corresponding first limiting block, the second limiting block, the third limiting block and the fourth limiting block to slide downwards through the two second pins; two sliding blocks in the first bearing mechanism and the second bearing mechanism respectively drive corresponding piston blocks to move downwards through corresponding hydraulic columns, and meanwhile, bearing springs in the first bearing mechanism and the second bearing mechanism are compressed together; hydraulic oil in the two second hydraulic shells enters the first hydraulic cavity through the corresponding hydraulic hoses; the hydraulic oil presses the weight block, so that the weight block moves from one end of the first hydraulic cavity to the other end of the first hydraulic cavity, and the return spring starts to be compressed; when the weight block slides over the position of the first pin, the dustproof cover mechanism swings towards the opening of the material conical barrel under the action of torque generated by the gravity of the weight block and covers the opening of the material conical barrel; at the moment, the sliding block just passes through the third limiting block and the fourth limiting block and meets the clamping block; the clamping block prevents the sliding block from continuously sliding downwards; then, manually swinging the stirring barrel to a horizontal position, and supporting the stirring barrel by a supporting block to be always in the horizontal position; starting a motor, wherein the motor drives the stirring blade to swing around the central axis of the stirring shaft through the stirring shaft; stirring the material and beginning to go on, the material is kept off in the agitator by dustproof cover owing to the dust that has been taken by the stirring to guaranteed that the operational environment at place is not polluted by the dust, and then guaranteed that workman's is healthy.

After the materials are well stirred, the supporting block is taken off, the stirring barrel is manually inclined, and the opening of the stirring barrel swings downwards by about 45 degrees; at the moment, the weight is positioned at the lower end of the first hydraulic cavity; under the action of gravity of the weight on the torque of the dustproof cover mechanism, the dustproof cover swings around the first pin relative to the stirring barrel; the dustproof cover is separated from the opening of the material cone cylinder, and the dustproof cover is opened; the stirred materials slide down from the stirring barrel to a material transport vehicle by the self gravity; when the materials completely come out of the stirring barrel, the bearing springs in the first bearing mechanism and the second bearing mechanism release energy; the bearing spring drives the corresponding sliding block to overcome the obstruction of the corresponding third limiting block, the fourth limiting block, the first limiting block and the second limiting block through the corresponding piston block and the corresponding hydraulic column and slide upwards to an initial position along the sliding groove; hydraulic oil flows from the first hydraulic cavity to the two second hydraulic cavities; under the action of the restoring force of the return spring, the weight block slides back to the upper end of the first hydraulic cavity from the lower end of the first hydraulic cavity; then manually swinging the stirring barrel to a horizontal position and supporting the stirring barrel by a supporting block to keep the horizontal position so as to prepare for next material filling and stirring; in the whole process that the stirring barrel swings to the horizontal position, certain torque always exists on the dustproof cover mechanism by the gravity of the weight, so that the dustproof cover and the barrel opening of the material conical barrel are closed; the dust cover is opened when feeding and discharging, and is closed all the time when the stirring barrel swings and the materials are stirred, so that the dust fog of the materials is sealed in the stirring barrel to the maximum extent, the pollution of the dust fog to the environment is avoided, the health of workers is further ensured, and the cost of the whole production process is reduced to the maximum extent.

Compared with the traditional concrete mixer, the dustproof cover mechanism in the mixer is automatically opened during charging and discharging; in the whole stirring process, the dustproof cover mechanism is always in an automatic closing state; the dust fog of the materials is ensured to be sealed in the stirring barrel to the maximum extent, the pollution of the dust fog to the environment is avoided, the health of workers is further ensured, and the cost of the whole production process is reduced to the maximum extent; the whole dustproof cover mechanism is light in material, and the whole mechanism adjusts the closing of the dustproof cover through the gravity center position of the weight, namely the whole dustproof cover mechanism realizes the closing of the dustproof cover by adjusting the gravity center position of the whole dustproof cover mechanism relative to the first pin; the closing speed of the dustproof cover is not very high, and the impact force generated during closing is not very high, so that the safety of operators is further ensured; the invention has simple structure and better use effect.

Drawings

FIG. 1 is a schematic perspective view of the entire blender.

FIG. 2 is a schematic cross-sectional view of a blender.

FIG. 3 is a schematic view of the dust cap mechanism and the material cone.

FIG. 4 is a schematic cross-sectional view of the first and second support mechanisms and the mixing tank.

FIG. 5 is a schematic cross-sectional view of the first support mechanism and the mixing tank.

FIG. 6 is a schematic perspective view of a dust cover mechanism.

Fig. 7 is a schematic sectional view of the dust cap mechanism.

Fig. 8 is a schematic perspective view of the mixing tub.

Fig. 9 is a schematic sectional view of the agitating barrel.

FIG. 10 is a schematic view of the spoke, hub and retaining ring in combination.

Figure 11 is a schematic perspective view of a first load bearing mechanism.

Figure 12 is a schematic cross-sectional view of the first load bearing mechanism.

Fig. 13 is a perspective schematic view of a bearing block.

Fig. 14 is a schematic cross-sectional view of a bearing block.

FIG. 15 is a schematic view of a first stopper.

FIG. 16 is a schematic view of the first stopper, the stopper spring and the slider.

Fig. 17 is a schematic perspective view of a slider.

Fig. 18 is a schematic perspective view of a second hydraulic housing.

Fig. 19 is a schematic cross-sectional view of the second hydraulic housing.

Number designation in the figures: 1. a base plate; 2. a support block; 3. a stirring barrel; 4. a shaft hole; 5. a material cone; 6. supporting a lug; 7. a first pin hole; 8. a second pin; 9. a dust cover mechanism; 10. connecting blocks; 11. a second pin hole; 12. a first hydraulic housing; 13. a first hydraulic chamber; 14. a first hydraulic bore; 15. a weight block; 16. a return spring; 17. a dust cover; 18. a fixing ring; 19. a spoke; 20. a shaft sleeve; 21. a stirring shaft; 22. a stirring blade; 23. a motor; 24. a base; 25. a first load bearing mechanism; 26. a second load bearing mechanism; 27. a bearing block; 28. a passage groove; 29. a chute; 30. a hydraulic pipe hole; 31. a limiting groove; 32. a slider; 33. a third pin hole; 34. a hydraulic column; 35. a piston block; 36. a second hydraulic housing; 37. a post hole; 38. a second hydraulic chamber; 39. a second hydraulic port; 40. a load bearing spring; 41. a clamping block; 42. a limiting spring; 43. a first stopper; 44. a first inclined plane; 45. a second inclined plane; 46. a first pin; 47. a second limiting block; 48. a third limiting block; 49. and a fourth limiting block.

Detailed Description

As shown in fig. 1, 2, 4, 8, 9, it includes a bottom plate 1, a supporting block 2, a mixing barrel 3, a shaft hole 4, a material cone 5, a supporting lug 6, a first pin hole 7, a second pin 8, a dust cover mechanism 9, a fixing ring 18, a spoke 19, a shaft sleeve 20, a mixing shaft 21, a mixing blade 22, a motor 23, a base 24, a first bearing mechanism 25, a second bearing mechanism 26, wherein as shown in fig. 1, the bottom plate 1 is fixed on the ground; the first bearing mechanism 25 and the second bearing mechanism 26 are symmetrically arranged on two sides of the upper end surface of the bottom plate 1; as shown in fig. 8, a shaft hole 4 is formed at the center of the bottom of the stirring barrel 3; as shown in fig. 9, the material cone 5 is connected with the opening of the stirring barrel 3 through the small barrel opening; the two support lugs 6 are arranged on the outer circular surface of the large cylinder opening of the material conical cylinder 5; a first through pin hole 7 is formed between the two support lugs 6; as shown in fig. 2 and 3, the dust cover mechanism 9 is connected with the two support lugs 6 through a first pin 46; as shown in fig. 2, the fixing ring 18 is embedded in the stirring barrel 3 through the outer circumferential surface thereof, and the outer circumferential surface of the fixing ring 18 is fixedly connected with the inner circumferential surface of the stirring barrel 3; as shown in fig. 2, the fixing ring 18 is located at one end of the inner circumferential surface of the stirring barrel 3 near the barrel mouth; the stirring shaft 21 is positioned in the stirring barrel 3, and one end of the stirring shaft 21 penetrates through the shaft hole 4 at the barrel bottom of the stirring barrel 3; the stirring shaft 21 is matched with the shaft hole 4 through a bearing; one end of the stirring shaft 21 close to the barrel opening of the stirring barrel 3 is positioned in the fixed ring 18; one end of the stirring shaft 21 close to the opening of the stirring barrel 3 is provided with a shaft sleeve 20; as shown in fig. 10, the outer circumferential surface of the shaft sleeve 20 and the inner circumferential surface of the fixing ring 18 are fixedly connected by four spokes 19, and the four spokes 19 are uniformly distributed along the circumferential direction of the outer circumferential surface of the shaft sleeve 20; as shown in fig. 4, two stirring vanes 22 are circumferentially and uniformly installed on the outer circumferential surface of the stirring shaft 21; as shown in fig. 5, the base 24 is installed outside the bottom of the stirring barrel 3; the motor 23 is arranged on the base 24, and the rotating shaft of the motor 23 is connected with one end of the stirring shaft 21 extending out of the shaft hole 4; as shown in fig. 8, two second pins 8 are circumferentially and uniformly mounted on the outer circumferential surface of the agitating barrel 3; as shown in fig. 4, the agitating barrel 3 is mounted between the first and second support mechanisms 25 and 26 by two second pins 8; as shown in fig. 2, the supporting block 2 is placed on the base plate 1, and the supporting block 2 is fitted with the agitating barrel 3.

As shown in fig. 3, 6 and 7, the dust cap mechanism 9 includes a connecting block 10, a second pin hole 11, a first hydraulic housing 12, a first hydraulic chamber 13, a first hydraulic hole 14, a weight 15, a return spring 16, a dust cap 17, and a first pin 46, wherein as shown in fig. 7, the first hydraulic chamber 13 is formed in the first hydraulic housing 12; a first hydraulic hole 14 is formed in the end face of one end of the first hydraulic shell 12, and the first hydraulic hole 14 is communicated with the first hydraulic cavity 13; a weight 15 is installed in the first hydraulic chamber 13; the return spring 16 is positioned in the first hydraulic cavity 13, and two ends of the return spring 16 are respectively connected with the inner wall of the first hydraulic cavity 13 and the weight 15; a second pin hole 11 is formed on the connecting block 10; the connecting block 10 is mounted on one side surface of the first hydraulic housing 12 through one end thereof, and the central axis of the second pin hole 11 is perpendicular to the central axis of the first hydraulic hole 14; as shown in fig. 6, the dust cover 17 is fixedly connected to one side surface of the first hydraulic housing 12, on which the connecting block 10 is mounted, through one end surface, and the dust cover 17 is located at the lower side of the connecting block 10; as shown in fig. 3, the connecting block 10 is mounted between the two lugs 6 by a first pin 46; as shown in fig. 2 and 3, the dust cover 17 is matched with the opening of the material cone 5.

As shown in fig. 4, the structure of the first bearing mechanism 25 and the structure of the second bearing mechanism 26 are symmetrical with respect to the central plane of the mixer drum 3, as shown in fig. 11, 12, 13, 14, 15, and 19, and for the first bearing mechanism 25, it includes a bearing block 27, a through groove 28, a sliding groove 29, a hydraulic pipe hole 30, a limiting groove 31, a sliding block 32, a third pin hole 33, a hydraulic column 34, a piston block 35, a second hydraulic casing 36, a column hole 37, a second hydraulic chamber 38, a second hydraulic hole 39, a bearing spring 40, a clamping block 41, a limiting spring 42, a first limiting block 43, a second limiting block 47, a third limiting block 48, a fourth limiting block 49, a first inclined plane 44, and a second inclined plane 45, wherein as shown in fig. 14, the sliding groove 29 is formed in the bearing block 27 along the length direction; as shown in fig. 13, a passage groove 28 is formed in one side surface of the bearing block 27 close to the agitating barrel 3 along the length direction, and the passage groove 28 is communicated with the chute 29; as shown in fig. 14, four limiting grooves 31 are symmetrically formed on two side surfaces of the sliding groove 29 located at two sides of the through groove 28, and the four limiting grooves 31 are located at the upper end of the inner wall of the sliding groove 29; a hydraulic pipe hole 30 is formed in one side face of the lower end of the bearing block 27, and the hydraulic pipe hole 30 is communicated with the sliding groove 29; as shown in fig. 5, the bearing block 27 is mounted on the base plate 1 through its lower end face; as shown in fig. 19, a second hydraulic chamber 38 is opened in the second hydraulic casing 36; as shown in fig. 18, a column hole 37 is formed in the center of the upper end surface of the second hydraulic casing 36, and the column hole 37 communicates with the second hydraulic chamber 38; as shown in fig. 19, a second hydraulic hole 39 is formed in one side surface of the lower end of the second hydraulic housing 36, and the second hydraulic hole 39 communicates with the second hydraulic chamber 38; as shown in fig. 12 and 14, the second hydraulic casing 36 is nested in the chute 29, and the second hydraulic casing 36 is located at the bottom of the chute 29; the second hydraulic hole 39 corresponds to the hydraulic pipe hole 30 on the bearing block 27; as shown in fig. 12, 16, 19, the piston block 35 is installed in the second hydraulic chamber 38; one end of the hydraulic column 34 passes through the column hole 37 from top to bottom and is fixedly connected with the piston block 35; the bearing spring 40 is positioned in the second hydraulic cavity 38, and two ends of the bearing spring 40 are respectively connected with the inner wall of the second hydraulic cavity 38 and the piston block 35; as shown in fig. 17, the slider 32 is provided with a third pin hole 33; as shown in fig. 16, the slider 32 is mounted in the bearing block 27 by sliding engagement with the slide groove 29, and the slider 32 is located at the top end of the slide groove 29; as shown in fig. 11, 12, and 13, the third pin hole 33 is opposed to the passage groove 28; as shown in fig. 12, the lower end surface of the slider 32 is fixedly connected with the upper end surface of the hydraulic column 34; as shown in fig. 15 and 16, one end of the first stopper 43 is provided with a first inclined surface 44 and a second inclined surface 45; one end of the second limiting block 47 is provided with a first inclined surface 44 and a second inclined surface 45; one end of the third limiting block 48 is provided with a first inclined surface 44 and a second inclined surface 45; one end of the fourth limiting block 49 is provided with a first inclined surface 44 and a second inclined surface 45; one end of the first stopper 43, which is not provided with the first inclined surface 44 and the second inclined surface 45, is inserted into one stopper groove 31; one end of the second limiting block 47, which is not provided with the first inclined surface 44 and the second inclined surface 45, is inserted into one limiting groove 31, and the structure of the second limiting block 47 and the structure of the first limiting block 43 are symmetrical about the central plane of the sliding groove 29; the first inclined surface 44 of the first stopper 43 is located above the second inclined surface 45; one end of the third limiting block 48, which is not provided with the first inclined surface 44 and the second inclined surface 45, is inserted into one limiting groove 31; one end of the fourth limiting block 49, which is not provided with the first inclined surface 44 and the second inclined surface 45, is inserted into one limiting groove 31, and the structure of the fourth limiting block 49 and the structure of the third limiting block 48 are symmetrical about the central plane of the sliding groove 29; the first inclined surface 44 of the third stopper 48 is located above the second inclined surface 45; the third stopper 48 is located below the first stopper 43; the four limit springs 42 are respectively positioned in the four limit grooves 31; two ends of the first limiting spring 42 are respectively connected with the inner wall of the limiting groove 31 and the first limiting block 43; two ends of the second limiting spring 42 are respectively connected with the inner wall of the limiting groove 31 and the second limiting block 47; the two ends of the third limiting spring 42 are respectively connected with the inner wall of the limiting groove 31 and the third limiting block 48; two ends of the fourth limiting spring 42 are respectively connected with the inner wall of the limiting groove 31 and the fourth limiting block 49; the first stopper 43, the second stopper 47, the third stopper 48 and the fourth stopper 49 are respectively matched with the slide block 32; the fixture block 41 is mounted on the inner wall of the sliding groove 29, and the fixture block 41 is located below the third limiting block 48; the fixture block 41 is matched with the slide block 32; the first hydraulic hole 14 and the second hydraulic hole 39 are connected by a hydraulic hose, and the hydraulic hose passes through the hydraulic pipe hole 30 on the corresponding bearing block 27; as shown in fig. 4 and 12, the mixing drum 3 is mounted between the two sliding blocks 32 by the cooperation of the two second pins 8 and the corresponding third pin holes 33.

As shown in fig. 8, the mounting point of the second pin 8 on the outer circumferential surface of the agitator 3 is offset from the center of gravity of the agitator 3 and close to the bottom of the agitator 3.

As shown in fig. 2, the stirring shaft 21 is in bearing fit with the shaft sleeve 20.

As shown in fig. 15, the slope of the first slope 44 is 20 degrees, and the slope of the second slope 45 is 45 degrees.

As shown in fig. 12 and 16, the distance between the lower end surface of the third stopper 48 and the upper end surface of the latch 41 is equal to the height of the slider 32.

As shown in fig. 12, the load bearing spring 40 is a compression spring.

As shown in fig. 7, the return spring 16 is a compression spring, and the elastic coefficient of the return spring 16 is smaller than that of the load spring 40.

As shown in fig. 16, the stopper spring 42 is a compression spring.

As shown in fig. 3 and 6, the first hydraulic housing 12 is made of a high-strength plastic, and the dust cap 17 is made of a common plastic.

The design purpose of the dustproof cover mechanism 9 is that when the stirring barrel 3 is in an empty state, the stirring barrel 3 is in a horizontal position; the weight 15 in the dust cap mechanism 9 is positioned at the upper end of the first hydraulic shell 12, and the relative gravity center positions of the weight 15 and the first pin 46 are not on the same vertical line; the weight 15 weight now has a certain torque on the entire dust cap arrangement 9 about the first pin 46; due to the existence of the torque, the dustproof cover mechanism 9 swings towards the opening of the material cone 5; the dustproof cover 17 is tightly closed with the opening of the material cone 5; when workers need to fill materials into the stirring barrel 3, the material barrel is inclined manually, and the opening of the material barrel swings upwards by about 45 degrees; at this time, looking down on the dust cap mechanism 9, the weight 15 in the dust cap mechanism 9 has been switched from the side of the first pin 46 close to the mouth of the material cone 5 to the side of the first pin 46 close to the bottom of the mixing drum 3; the position of the center of gravity of the weight 15 relative to the first pin 46 changes; the weight 15 changes the torque direction of the dust cover mechanism 9 by gravity; the dust cap 17, which is the torque generated by the weight 15 on the dust cap mechanism 9 at this time, swings together with the dust cap mechanism 9 about the first pin 46; the dustproof cover 17 is separated from the material conical barrel 5, the dustproof cover 17 is opened, and workers wait for filling materials into the stirring barrel 3; when a worker fills materials into the stirring barrel 3, the stirring barrel 3 and the materials drive the sliding blocks 32 in the first bearing mechanism 25 and the second bearing mechanism 26 to overcome the obstruction of the corresponding first limiting block 43, the second limiting block 47, the third limiting block 48 and the fourth limiting block 49 to slide downwards through the two second pins 8 respectively; the two sliding blocks 32 in the first bearing mechanism 25 and the second bearing mechanism 26 respectively drive the corresponding piston blocks 35 to move downwards through the corresponding hydraulic columns 34, and meanwhile, the bearing springs 40 in the first bearing mechanism 25 and the second bearing mechanism 26 are compressed together; the hydraulic oil in the two second hydraulic pressure shells 36 enters the first hydraulic pressure chamber 13 through the corresponding hydraulic hoses; the hydraulic oil presses the weight 15 so that the weight 15 moves from one end to the other end of the first hydraulic chamber 13, and the return spring 16 starts to be compressed; after the weight 15 slides over the position of the first pin 46, the dustproof cover mechanism 9 swings towards the mouth of the material cone 5 and covers the mouth of the material cone 5 under the action of torque generated by the gravity of the weight 15; then, manually swinging the stirring barrel 3 to a horizontal position, and supporting the stirring barrel 3 by using the supporting block 2 to be always in the horizontal position; starting a motor 23, wherein the motor 23 drives the stirring blade 22 to swing around the central axis of the stirring shaft 21 through the stirring shaft 21; the materials are stirred, and the dust brought by the stirring of the materials is blocked in the stirring barrel 3 by the dustproof cover 17, so that the working environment is not polluted by the dust, and the health of workers is further ensured; after the materials are well stirred, the supporting block 2 is taken off, the stirring barrel 3 is manually inclined, and the opening of the stirring barrel 3 swings downwards by about 45 degrees; at this time, since the weight 15 is located at the lower end of the first hydraulic chamber 13; under the action of the gravity of the weight 15 on the torque of the dustproof cover mechanism 9, the dustproof cover 17 swings around the first pin 46 relative to the stirring barrel 3; the dustproof cover 17 is separated from the opening of the material cone 5, and the dustproof cover 17 is opened; the stirred materials slide down from the stirring barrel 3 into the material transport vehicle by the self gravity; when the materials completely come out of the stirring barrel 3, the bearing springs 40 in the first bearing mechanism 25 and the second bearing mechanism 26 release energy; the bearing spring 40 drives the corresponding slide block 32 to slide upwards along the sliding chute 29 to an initial position by overcoming the obstruction of the corresponding third limiting block 48, the fourth limiting block 49, the first limiting block 43 and the second limiting block 47 through the corresponding piston block 35 and the hydraulic column 34; hydraulic oil flows from the first hydraulic chamber 13 to the two second hydraulic chambers 38; the weight 15 slides back from the lower end of the first hydraulic chamber 13 to the upper end of the first hydraulic chamber 13 under the restoring force of the return spring 16; in the whole process that the stirring barrel 3 swings to the horizontal position, certain torque always exists on the dustproof cover mechanism 9 by the gravity of the weight 15, so that the dustproof cover 17 and the opening of the material conical barrel 5 are closed.

The function of the sleeve 20, the spoke 19 and the fixing ring 18 in the present invention is to provide a supporting point for one end of the stirring shaft 21, so that the stirring shaft 21 can rotate smoothly in the stirring barrel 3.

The first limiting block 43, the second limiting block 47, the third limiting block 48, the fourth limiting block 49 and the first inclined plane 44 and the second inclined plane 45 on the first limiting block 43 and the second limiting block 47 are designed to be opened when a worker starts to fill materials in the material barrel without the limitation of the first limiting block 43 and the second limiting block 47; the materials are continuously added, and the stirring barrel 3 continuously moves downwards; the stirring barrel 3 drives the piston block 35 to move downwards through the second pin 8, the sliding block 32 and the hydraulic column 34; the piston block 35 causes hydraulic oil to flow from the two second hydraulic pressure chambers 38 to the first hydraulic pressure chamber 13; the weight 15 slides from one end to the other end of the first hydraulic chamber 13; when the weight 15 continues to slide and passes the position of the first pin 46, the torque of the weight 15 on the dustproof cover mechanism 9 enables the dustproof cover 17 to swing towards the opening of the material cone 5 and cover the opening, so that the material is prevented from being continuously filled into the stirring barrel 3; the first inclined surfaces 44 on the first stopper 43 and the second stopper 47 are matched with the slide block 32; because the inclination of the first inclined plane 44 is 20 degrees and has a certain self-locking function to the slide block 32 positioned thereon, when the stirring barrel 3 is not filled with materials, the stirring barrel 3 cannot overcome the obstruction of the first limiting block 43 and the second limiting block 47 to move downwards; when the stirring barrel 3 is filled with materials, the stirring barrel 3 can overcome the limitation of the first limiting block 43 and the second limiting block 47 to move downwards under the action of gravity; meanwhile, the first stopper 43 and the second stopper 47 are retracted into the stopper groove 31 and the restriction of the slider 32 is released; the stopper springs 42 corresponding to the first stopper 43 and the second stopper 47 are compressed; the slide block 32 continues to slide downwards under the action of the gravity of the stirring barrel 3 and meets two second inclined planes 45 on the third limiting block 48 and the fourth limiting block 49; because the inclination of the second inclined plane 45 is about 45 degrees, the component force of the slide block 32 acting on the third limiting block 48 and the fourth limiting block 49 in the horizontal direction is larger, so that the third limiting block 48 and the fourth limiting block 49 easily contract towards the corresponding limiting grooves 31 to further release the limitation on the slide block 32, the slide block 32 continues to slide downwards, and the bearing spring 40 is compressed; when the slide block 32 just slides over the positions of the third stopper 48 and the fourth stopper 49, the slide block 32 meets the latch 41; the slide block 32 is prevented from further moving downwards by the fixture block 41; when the materials in the stirring barrel 3 are stirred and begin to be discharged, the third limiting block 48 and the fourth limiting block 49 play an important role here in order to ensure that the stirring barrel 3 can discharge materials better and stably; as the materials continuously flow out, the pressure of the stirring barrel 3 on the piston block 35 is continuously reduced; the load bearing spring 40 begins to release energy; the resultant force of the restoring force of the bearing spring 40 and the gravity of the stirring barrel 3 is continuously increased; the pressure of the slide blocks 32 in the first and second bearing mechanisms 25 and 26 on the first inclined surfaces 44 of the corresponding third and fourth limit blocks 48 and 49 is continuously increased; when the materials in the stirring barrel 3 all flow out of the stirring barrel 3, the pressure on the first inclined surfaces 44 of the third limiting block 48 and the fourth limiting block 49 is the maximum; at this time, the slider 32 overcomes the limitation of the third stopper 48 and the fourth stopper 49, so that the third stopper 48 and the fourth stopper 49 are retracted into the corresponding stopper grooves 31; the slider 32 continues to slide upward and meets the second slopes 45 on the first stopper 43 and the second stopper 47; because the inclination of the second inclined plane 45 is 45 degrees, the component force of the sliding block 32 on the first limiting block 43 and the second limiting block 47 in the horizontal direction is larger, so that the first limiting block 43 and the second limiting block 47 easily contract towards the corresponding limiting groove 31 to further release the limitation on the sliding block 32, the sliding block 32 continues to slide upwards, and the bearing spring 40 restores the original shape; then, the stirring barrel 3 is manually swung to the horizontal position, and the supporting block 2 is used for supporting the stirring barrel 3 to keep the horizontal position, so that preparation is made for next material filling and stirring.

The specific implementation mode is as follows: when the stirring barrel 3 is in an empty state, the stirring barrel 3 is in a horizontal position; the weight 15 in the dust cap mechanism 9 is positioned at the upper end of the first hydraulic shell 12, and the relative gravity center positions of the weight 15 and the first pin 46 are not on the same vertical line; the weight 15 weight now has a certain torque on the entire dust cap arrangement 9 about the first pin 46; due to the existence of the torque, the dustproof cover mechanism 9 swings towards the opening of the material cone 5; the dust cover 17 is tightly closed with the opening of the material cone 5.

When workers need to fill materials into the stirring barrel 3, the material barrel is inclined manually, and the opening of the material barrel swings upwards by about 45 degrees; at this time, looking down on the dust cap mechanism 9, the weight 15 in the dust cap mechanism 9 has been switched from the side of the first pin 46 close to the mouth of the material cone 5 to the side of the first pin 46 close to the bottom of the mixing drum 3; the position of the center of gravity of the weight 15 relative to the first pin 46 changes; the weight 15 changes the torque direction of the dust cover mechanism 9 by gravity; the dust cap 17, which is the torque generated by the weight 15 on the dust cap mechanism 9 at this time, swings together with the dust cap mechanism 9 about the first pin 46; the dustproof cover 17 is separated from the material cone 5, and the dustproof cover 17 is opened to wait for workers to fill materials into the stirring barrel 3.

When a worker substantially fills the material into the stirring barrel 3, the stirring barrel 3 and the material drive the two sliding blocks 32 in the first bearing mechanism 25 and the second bearing mechanism 26 to slide downwards through overcoming the obstruction of the corresponding first limiting block 43, second limiting block 47, third limiting block 48 and fourth limiting block 49 through the two second pins 8; the two sliding blocks 32 in the first bearing mechanism 25 and the second bearing mechanism 26 respectively drive the corresponding piston blocks 35 to move downwards through the corresponding hydraulic columns 34, and meanwhile, the bearing springs 40 in the first bearing mechanism 25 and the second bearing mechanism 26 are compressed together; the hydraulic oil in the two second hydraulic pressure shells 36 enters the first hydraulic pressure chamber 13 through the corresponding hydraulic hoses; the hydraulic oil presses the weight 15 so that the weight 15 moves from one end to the other end of the first hydraulic chamber 13, and the return spring 16 starts to be compressed; after the weight 15 slides over the position of the first pin 46, the dustproof cover mechanism 9 swings towards the mouth of the material cone 5 and covers the mouth of the material cone 5 under the action of torque generated by the gravity of the weight 15; at this time, the slider 32 just passes over the third stopper 48 and the fourth stopper 49 and meets the latch 41; the slide block 32 is prevented from continuously sliding downwards by the fixture block 41; then, manually swinging the stirring barrel 3 to a horizontal position, and supporting the stirring barrel 3 by using the supporting block 2 to be always in the horizontal position; starting a motor 23, wherein the motor 23 drives the stirring blade 22 to swing around the central axis of the stirring shaft 21 through the stirring shaft 21; stirring the material and beginning to go on, the material is kept off in agitator 3 by shield 17 owing to the dust that has been taken by the stirring to guaranteed that the operational environment at place is not polluted by the dust, and then guaranteed that workman's is healthy.

After the materials are well stirred, the supporting block 2 is taken off, the stirring barrel 3 is manually inclined, and the opening of the stirring barrel 3 swings downwards by about 45 degrees; at this time, since the weight 15 is located at the lower end of the first hydraulic chamber 13; under the action of the gravity of the weight 15 on the torque of the dustproof cover mechanism 9, the dustproof cover 17 swings around the first pin 46 relative to the stirring barrel 3; the dustproof cover 17 is separated from the opening of the material cone 5, and the dustproof cover 17 is opened; the stirred materials slide down from the stirring barrel 3 into the material transport vehicle by the self gravity.

When the materials are poured out of the stirring barrel 3 basically and completely, the bearing springs 40 in the first bearing mechanism 25 and the second bearing mechanism 26 release energy; the bearing spring 40 drives the corresponding slide block 32 to just overcome the obstruction of the corresponding third limiting block 48, fourth limiting block 49, first limiting block 43 and second limiting block 47 through the corresponding piston block 35 and hydraulic column 34 and slide upwards along the sliding chute 29 to the initial position; hydraulic oil flows from the first hydraulic chamber 13 to the two second hydraulic chambers 38; the weight 15 slides back from the lower end of the first hydraulic chamber 13 to the upper end of the first hydraulic chamber 13 under the restoring force of the return spring 16; then manually swinging the stirring barrel 3 to a horizontal position and supporting the stirring barrel 3 by the supporting block 2 to keep the horizontal position, so as to prepare for next material filling and stirring; in the whole process that the stirring barrel 3 swings to the horizontal position, certain torque always exists on the dustproof cover mechanism 9 by the gravity of the weight 15, so that the dustproof cover 17 and the opening of the material conical barrel 5 are closed; the dust cover 17 is opened when loading and unloading materials, and is closed all the time when the stirring barrel 3 swings and the materials are stirred, so that the dust fog of the materials is sealed in the stirring barrel 3 to the maximum extent, the pollution of the dust fog to the environment is avoided, the health of workers is further ensured, and the cost of the whole production process is reduced to the maximum extent.

In conclusion, the invention has the beneficial effects that: a dustproof cover mechanism 9 in the stirrer is automatically opened during charging and discharging; in the whole stirring process, the dustproof cover mechanism 9 is always in an automatic closing state; the dust fog of the materials is ensured to be sealed in the stirring barrel 3 to the maximum extent, the pollution of the dust fog to the environment is avoided, the health of workers is further ensured, and the cost of the whole production process is reduced to the maximum extent; the material of the whole dust cover mechanism 9 is light, and the whole mechanism regulates the closing of the dust cover 17 through the gravity center position of the weight 15, namely, the whole dust cover mechanism 9 realizes the closing of the dust cover 17 through adjusting the gravity center position of the whole dust cover mechanism 9 relative to the first pin 46; the closing and opening of the dust cover 17 are influenced by gravity, the gravity center is adjusted by the weight of the material, the weight of the material only plays a role in adjustment, and the closing force of the dust cover is not influenced. The closing speed and closing force of the dust cap 17 are influenced by the weight of the weight, and after the weight is reasonably controlled, the closing speed and closing force are not very large, and the impact force generated during closing is not very large, so that the safety of operators is further ensured.

Claims (4)

1. The utility model provides a dustproof concrete mixer that building engineering used which characterized in that: the stirring device comprises a bottom plate, a supporting block, a stirring barrel, a shaft hole, a material conical barrel, a supporting lug, a first pin hole, a second pin, a dustproof cover mechanism, a fixing ring, a spoke rod, a shaft sleeve, a stirring shaft, a stirring blade, a motor, a base, a first bearing mechanism and a second bearing mechanism, wherein the bottom plate is fixed on the ground; the first bearing mechanism and the second bearing mechanism are symmetrically arranged on two sides of the upper end surface of the bottom plate; the center of the bottom of the stirring barrel is provided with a shaft hole; the material conical barrel is connected with the barrel opening of the stirring barrel through a small barrel opening of the material conical barrel; the two support lugs are arranged on the outer circular surface of the large cylinder opening of the material conical cylinder; a first through pin hole is formed between the two support lugs; the dustproof cover mechanism is connected with the two support lugs through a first pin; the outer circular surface of the fixing ring is embedded into the stirring barrel, and the outer circular surface of the fixing ring is fixedly connected with the inner circular surface of the stirring barrel; the fixing ring is positioned at one end of the inner circle surface of the stirring barrel close to the barrel opening; the stirring shaft is positioned in the stirring barrel, and one end of the stirring shaft penetrates through a shaft hole at the bottom of the stirring barrel; the stirring shaft is matched with the shaft hole through a bearing; one end of the stirring shaft close to the opening of the stirring barrel is positioned in the fixed ring; a shaft sleeve is arranged at one end of the stirring shaft close to the barrel opening of the stirring barrel; the outer circular surface of the shaft sleeve is fixedly connected with the inner circular surface of the fixing ring through four radial rods, and the four radial rods are uniformly distributed along the circumferential direction of the outer circular surface of the shaft sleeve; the two stirring blades are circumferentially and uniformly arranged on the outer circular surface of the stirring shaft; the base is arranged on the outer side of the bottom of the stirring barrel; the motor is arranged on the base, and a rotating shaft of the motor is connected with one end of the stirring shaft, which extends out of the shaft hole; the two second pins are circumferentially and uniformly arranged on the outer circular surface of the stirring barrel; the stirring barrel is arranged between the first bearing mechanism and the second bearing mechanism through two second pins; the supporting block is placed on the bottom plate and matched with the stirring barrel;

the dustproof cover mechanism comprises a connecting block, a second pin hole, a first hydraulic shell, a first hydraulic cavity, a first hydraulic hole, a heavy block, a reset spring, a dustproof cover and a first pin, wherein the first hydraulic cavity is formed in the first hydraulic shell; a first hydraulic hole is formed in the end face of one end of the first hydraulic shell and communicated with the first hydraulic cavity; the weight is arranged in the first hydraulic cavity; the reset spring is positioned in the first hydraulic cavity, and two ends of the reset spring are respectively connected with the inner wall of the first hydraulic cavity and the heavy block; a second pin hole is formed in the connecting block; the connecting block is arranged on one side surface of the first hydraulic shell through one end of the connecting block, and the central axis of the second pin hole is vertical to the central axis of the first hydraulic hole; the dustproof cover is fixedly connected with one side surface, provided with the connecting block, of the first hydraulic shell through one end surface, and the dustproof cover is positioned on the lower side of the connecting block; the connecting block is arranged between the two support lugs through a first pin; the dustproof cover is matched with the opening of the material cone;

the structure of the first bearing mechanism and the structure of the second bearing mechanism are symmetrical about the central plane of the stirring barrel, and the first bearing mechanism comprises a bearing block, a passing groove, a sliding groove, a hydraulic pipe hole, a limiting groove, a sliding block, a third pin hole, a hydraulic column, a piston block, a second hydraulic shell, a column hole, a second hydraulic cavity, a second hydraulic hole, a bearing spring, a clamping block, a limiting spring, a first limiting block, a second limiting block, a third limiting block, a fourth limiting block, a first inclined plane and a second inclined plane, wherein the bearing block is provided with the sliding groove along the length direction; a through groove is formed in one side surface, close to the stirring barrel, of the bearing block along the length direction, and the through groove is communicated with the sliding groove; two side surfaces of the sliding groove, which are positioned at two sides of the through groove, are symmetrically provided with four limiting grooves, and the four limiting grooves are positioned at the upper end of the inner wall of the sliding groove; a hydraulic pipe hole is formed in one side face of the lower end of the bearing block and communicated with the sliding groove; the bearing block is arranged on the bottom plate through the lower end surface of the bearing block; a second hydraulic cavity is formed in the second hydraulic shell; a column hole is formed in the center of the upper end face of the second hydraulic shell and communicated with the second hydraulic cavity; a second hydraulic hole is formed in one side face of the lower end of the second hydraulic shell and communicated with the second hydraulic cavity; the second hydraulic shell is nested in the sliding chute and is positioned at the bottom of the sliding chute; the second hydraulic hole corresponds to a hydraulic pipe hole on the bearing block; the piston block is arranged in the second hydraulic cavity; one end of the hydraulic column penetrates through the column hole from top to bottom and is fixedly connected with the piston block; the bearing spring is positioned in the second hydraulic cavity, and two ends of the bearing spring are respectively connected with the inner wall of the second hydraulic cavity and the piston block; a third pin hole is formed in the sliding block; the sliding block is arranged in the bearing block through sliding fit with the sliding groove and is positioned at the top end of the sliding groove; the third pin hole is opposite to the through groove; the lower end face of the sliding block is fixedly connected with the upper end face of the hydraulic column; one end of the first limiting block is provided with a first inclined plane and a second inclined plane; one end of the second limiting block is provided with a first inclined plane and a second inclined plane; one end of the third limiting block is provided with a first inclined plane and a second inclined plane; one end of the fourth limiting block is provided with a first inclined plane and a second inclined plane; one end of the first limiting block, which is not provided with the first inclined plane and the second inclined plane, is inserted into a limiting groove; one end of the second limiting block, which is not provided with the first inclined plane and the second inclined plane, is inserted into a limiting groove, and the structure of the second limiting block and the structure of the first limiting block are symmetrical about the central plane of the sliding groove; the first inclined plane of the first limiting block is positioned above the second inclined plane; one end of the third limiting block, which is not provided with the first inclined plane and the second inclined plane, is inserted into a limiting groove; one end of the fourth limiting block, which is not provided with the first inclined plane and the second inclined plane, is inserted into a limiting groove, and the structure of the fourth limiting block and the structure of the third limiting block are symmetrical about the central plane of the sliding groove; the second inclined plane of the third limiting block is positioned above the first inclined plane; the third limiting block is positioned below the first limiting block; the four limiting springs are respectively positioned in the four limiting grooves; two ends of the first limiting spring are respectively connected with the inner wall of the limiting groove and the first limiting block; two ends of the second limiting spring are respectively connected with the inner wall of the limiting groove and the second limiting block; two ends of the third limiting spring are respectively connected with the inner wall of the limiting groove and the third limiting block; two ends of the fourth limiting spring are respectively connected with the inner wall of the limiting groove and the fourth limiting block; the first limiting block, the second limiting block, the third limiting block and the fourth limiting block are respectively matched with the sliding block; the fixture block is arranged on the inner wall of the sliding groove and is positioned below the third limiting block; the clamping block is matched with the sliding block; the first hydraulic hole and the second hydraulic hole are connected by a hydraulic hose, and the hydraulic hose penetrates through a hydraulic pipe hole on the corresponding bearing block; the stirring barrel is arranged between the two sliding blocks through the matching of the two second pins and the corresponding third pin holes;

the mounting point of the second pin on the outer circular surface of the stirring barrel deviates from the gravity center of the stirring barrel and is close to the barrel bottom of the stirring barrel;

the stirring shaft is matched with the shaft sleeve through a bearing;

the inclination of the first inclined plane is 20 degrees, and the inclination of the second inclined plane is 45 degrees;

the distance between the lower end face of the third limiting block and the upper end face of the clamping block is equal to the height of the sliding block.

2. The dustproof concrete mixer for construction engineering according to claim 1, wherein: the bearing spring is a compression spring.

3. The dustproof concrete mixer for construction engineering according to claim 1, wherein: the return spring is a compression spring, and the elastic coefficient of the return spring is smaller than that of the bearing spring.

4. The dustproof concrete mixer for construction engineering according to claim 1, wherein: the limiting spring is a compression spring.

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