CN216860159U

CN216860159U - Concrete mixer

Info

Publication number: CN216860159U
Application number: CN202122599411.5U
Authority: CN
Inventors: 符宝涛; 纪翔; 郁业从; 高方昌
Original assignee: Zhongjianhong Hainan Engineering Quality Inspection Technology Co ltd
Current assignee: Zhongjianhong Hainan Engineering Quality Inspection Technology Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-07-01
Anticipated expiration: 2031-10-27

Abstract

The utility model discloses a concrete mixer which comprises a mounting frame, wherein a first mounting plate is horizontally arranged, and a first limiting rod is fixedly connected with the first mounting plate. The mixing drum is horizontally provided with a second mounting plate, the second mounting plate is fixedly connected with a second limiting rod, a feeding hole is formed in the upper end of the mixing drum, and a discharging hole is formed in the side wall of the mixing drum. And the stirring unit comprises a stirring blade, the stirring blade is accommodated in the stirring cylinder, and the stirring blade can rotate around a vertical axis. The damping unit is arranged between the first mounting plate and the second mounting plate, and the first mounting plate and the second mounting plate are matched to clamp the damping unit so as to limit the vertical movement of the damping unit. The shock absorption unit is provided with a containing hole in a penetrating manner along the vertical direction, the first limiting rod penetrates through the containing hole from bottom to top, the second limiting rod penetrates through the containing hole from top to bottom, and the first limiting rod is matched with the second limiting rod to limit the horizontal movement of the shock absorption unit. This mixer can reduce the produced mechanical vibration of during operation effectively, and then the noise abatement.

Description

Concrete mixer

Technical Field

The utility model relates to the technical field of concrete production equipment, in particular to a concrete mixer.

Background

Concrete is one of the most common and widely used building materials in the world, being strong and durable, easy to use, low in manufacturing cost, and capable of being poured into any shape. The concrete is an artificial stone which is prepared by mixing coarse aggregate, fine aggregate, water and cement according to a certain proportion, uniformly stirring, pouring, molding and hardening.

A concrete mixer is a machine for mixing and stirring cement, aggregate and water into a concrete mixture. Because the demand of concrete in the building engineering is larger, a common concrete mixing plant can simultaneously use a plurality of concrete mixers to carry out mixing work. At concrete mixer during operation, all can produce the striking between the stirring material, between stirring material and the churn and between churn and the mounting bracket to lead to mechanical vibration, and then produce a large amount of noises. The person is under the high noise environment for a long time, can appear tinnitus, hearing decline, can appear symptoms such as headache even, even leave the noise environment, also can cause irreversible damage to hearing.

The existing concrete mixer has large vibration amplitude, so that a large amount of noise can be generated, the working efficiency of workers can be influenced, and the hearing of the workers can be damaged after a long time. Therefore, the existing concrete mixer is not enough to meet the use requirement.

SUMMERY OF THE UTILITY MODEL

The utility model provides a concrete mixer, which can reduce mechanical vibration and further reduce noise.

In view of the above, the present invention provides a concrete mixer, comprising: the mounting frame is horizontally provided with a first mounting plate, and the first mounting plate is fixedly connected with a first limiting rod extending upwards; the stirring device comprises a stirring drum, a first mounting plate and a second mounting plate, wherein the stirring drum is horizontally provided with the second mounting plate which is fixedly connected with a second limiting rod extending downwards; the stirring unit comprises a stirring blade, the stirring blade is accommodated in the stirring cylinder, and the stirring blade can rotate around a vertical axis; the damping unit is arranged between the first mounting plate and the second mounting plate, and the first mounting plate and the second mounting plate are matched to clamp the damping unit so as to limit the vertical movement of the damping unit; the damping unit is provided with a containing hole in a penetrating manner along the vertical direction, the first limiting rod penetrates through the containing hole from bottom to top, the second limiting rod penetrates through the containing hole from top to bottom, and the first limiting rod is matched with the second limiting rod to limit the horizontal movement of the damping unit.

The feed inlet has been seted up to the upper end of this mixer's churn, and cement, aggregate and water are followed feed inlet department and are got into the churn in, and stirring vane in the churn stirs simultaneously to form the concrete of misce bene, the concrete of misce bene passes through the discharge gate and discharges. In addition, the first mounting plate and the second mounting plate are matched and clamped with each other to limit the vertical movement of the damping unit, and the first limiting rod is matched with the second limiting rod to limit the horizontal movement of the damping unit. The mixing drum is connected with the mounting rack through the damping unit, and the damping unit can greatly reduce mechanical vibration generated by the mixing drum during operation and can reduce the mechanical vibration transmitted to the mounting rack by the mixing drum, so that noise emitted by the mixer is effectively reduced. Therefore, the stirring machine can effectively reduce the mechanical vibration generated during operation, and further reduce the noise.

Optionally, the length of the accommodating hole of the damping unit is greater than the sum of the lengths of the first limiting rod and the second limiting rod.

Optionally, the shock absorbing unit is made of acrylic rubber.

Optionally, the stirring unit further comprises a stirring motor, the stirring motor is installed at the upper end of the stirring drum, the output end of the stirring motor is in transmission connection with a stirring shaft, the stirring shaft penetrates through the top wall of the stirring drum, and the stirring blades are fixedly connected to the stirring shaft.

Optionally, a propeller is fixedly connected to the lower end of the stirring shaft.

Optionally, one end of the stirring blade close to the side wall of the stirring cylinder is fixedly connected with a scraping plate; the scraper blade extends along the vertical direction, and the cross section of the scraper blade is arc-shaped.

Optionally, a sound absorbing cavity is formed in the side wall of the mixing drum, and sound absorbing cotton is filled in the sound absorbing cavity.

Drawings

In order to express the technical scheme of the present invention more clearly, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

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

fig. 3 is a schematic structural diagram of a damping unit according to an embodiment of the present invention.

Wherein the reference numerals are:

the stirring device comprises a mounting rack 1, a first mounting plate 11, a first limiting rod 12, a stirring cylinder 2, a second mounting plate 21, a second limiting rod 22, a feeding hole 23, a discharging hole 24, a stirring unit 3, a stirring motor 31, a stirring shaft 32, stirring blades 33, a propeller 34, a scraper 35, a damping unit 4, a containing hole 41 and sound absorbing cotton 5.

Detailed Description

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

In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, 2 and 3, the present invention provides a concrete mixer, which includes a mounting frame 1, a mixing drum 2, a mixing unit 3 and a damping unit 4.

Wherein, the upper end of the mixing drum 2 is provided with a feed inlet 23, and the side wall of the mixing drum 2 is provided with a discharge outlet 24. Stirring unit 3 includes agitator motor 31, and agitator motor 31 fixed mounting is in the upper end of churn 2, and agitator motor 31's output transmission is connected with (mixing) shaft 32, and (mixing) shaft 32 extends along vertical direction, a plurality of stirring vane 33 of fixedly connected with on the (mixing) shaft 32, and a plurality of stirring vane 33 set up along vertical direction interval. The stirring blade 33 is accommodated in the stirring cylinder 2, and the stirring motor 31 can drive the stirring blade 33 to rotate around a vertical axis.

In the process of stirring the concrete, a worker pours materials such as cement, aggregate and water into the mixing drum 2 through the feed port 23, and the mixing blades 33 in the mixing drum 2 stir at the same time to form uniformly mixed concrete, and the uniformly mixed concrete is discharged through the discharge port 24.

In the process of stirring concrete, all can produce the striking between the material that receives the stirring, between stirring material and the churn 2 for churn 2 produces mechanical vibration, thereby causes the resonance of surrounding air, produces the noise. In order to slow down the mechanical vibration of the mixing drum 2 and prevent the mechanical vibration of the mixing drum 2 from being transmitted to the mounting frame 1, the mounting frame 1 is connected with the mixing drum 2 through the damping unit 4.

Specifically, as shown in fig. 2, the mounting bracket 1 is horizontally provided with a first mounting plate 11, and the first mounting plate 11 is fixedly connected with a first limiting rod 12 extending upwards. The mixing drum 2 is horizontally provided with a second mounting plate 21, and the second mounting plate 21 is fixedly connected with a second limiting rod 22 extending downwards. The damping unit 4 is provided with a containing hole 41 in a penetrating manner along the vertical direction, the first limiting rod 12 can penetrate through the containing hole 41 from bottom to top, and the second limiting rod 22 can penetrate through the containing hole 41 from top to bottom.

In addition, the upper end surface of the first mounting plate 11 is a flat surface, and the lower end surface of the second mounting plate 21 is a flat surface. In order to increase the contact area between the upper and lower ends of the shock-absorbing unit 4 and the first and

second mounting plates

11 and 21, the upper and lower ends of the shock-absorbing unit 4 are respectively provided with a first contact plane and a second contact plane. The first contact plane may be attached to the upper end surface of the first mounting plate 11, and the second contact plane may be attached to the lower end surface of the second mounting plate 21. By increasing the contact area between the upper and lower ends of the shock absorption unit 4 and the first mounting plate 11 and the second mounting plate 21, the concentrated stress on the shock absorption unit 4 can be effectively reduced, and the service life of the shock absorption unit 4 can be prolonged. As shown in particular in fig. 3, the damping unit 4 is cylindrical.

When the first limiting rod 12 and the second limiting rod 22 are simultaneously inserted into the accommodating hole 41 of the damping unit 4, at this time, the first limiting rod 12 and the second limiting rod 22 are on the same vertical axis. The first mounting plate 11 functions to support the cushion unit 4 and provides an upward force to the cushion unit 4. The weight of the second mounting plate 21 and the mixing drum 2 acts on the damping unit 4, so that the damping unit 4 is subjected to a downward force. The upward force applied to the shock-absorbing unit 4 by the first mounting plate 11 and the downward force applied to the shock-absorbing unit 4 by the second mounting plate 21 cooperate to clamp the shock-absorbing unit 4, thereby restricting the vertical movement of the shock-absorbing unit 4. In addition, the first and second limiting

rods

12 and 22 penetrating the accommodating hole 41 can cooperate to limit the horizontal displacement of the damping unit 4. Therefore, the mounting frame 1 and the mixing drum 2 can be elastically connected through the damping unit 4, and when the damping unit 4 is seriously worn, a worker can conveniently take out the damping unit 4 only by lifting up the mixing drum and the second mounting plate 21, and can rapidly replace the damping unit 4.

The damping unit 4 is made of acrylic rubber. The super glue is also called polyurethane PU elastomer, which is a material with the advantages of good strength, small compression deformation and the like. The high-strength rubber has good damping performance, is wear-resistant and high-temperature-resistant, and is suitable for the working environment of strong acid and strong alkali. Therefore, the super glue is an excellent mechanical buffer material. The damping unit 4 made of the acrylic rubber can effectively absorb the mechanical vibration wave generated by the mixing drum 2 in the mixing process, and further reduce the noise generated by the concrete mixer. Meanwhile, the damping unit 4 can also prevent the transmission of mechanical vibration waves to the mounting frame 1, further reduce noise, and also prevent the mounting frame 1 from being damaged due to excessive vibration. Of course, it is understood that the damping unit 4 may also be made of other materials with good damping performance and wear resistance, such as silicone, rubber, etc.

Further, the extension length of the accommodating hole 41 should be greater than the sum of the lengths of the first limiting rod 12 and the second limiting rod 22, that is, when the first mounting plate 11 and the second mounting plate 21 are matched to clamp the damping unit 4, the first limiting rod 12 and the second limiting rod 22 penetrating through the accommodating hole 41 do not contact or collide directly, but are elastically connected through the damping unit 4, so that the mechanical vibration wave of the mixing drum 2 is prevented from being transmitted to the mounting frame 1 through the first limiting rod 12 and the second limiting rod 22, and the vibration and noise of the mixer are reduced.

Therefore, the mixer can reduce the mechanical vibration generated by the mixing drum 2 while mixing the concrete, thereby effectively reducing the noise.

Referring to fig. 1, the stirring unit 3 includes a propeller 34, and the propeller 34 is fixedly connected to a lower end of the stirring shaft 32. The propeller 34 extends in the vertical direction, and when the stirring shaft 32 is driven by the stirring motor 31 to rotate, the propeller 34 rotates around the vertical axis. The propeller 34 can drive the middle part of the mixing drum 2 with the material precipitated to the bottom in the rotating process, so that the concrete produced after mixing is more uniform.

The stirring unit 3 further comprises a scraper 35. The scraper 35 is fixedly connected with one end of the stirring blades 33 close to the side wall of the stirring cylinder 2. When the stirring motor 31 drives the stirring blade 33 to rotate around the vertical axis, the scraper 35 also rotates. The scraper 35 extends in the vertical direction, and the cross section of the scraper 35 is arc-shaped, so that the scraper 35 can be attached to the side wall of the mixing drum 2. When the scraper 35 rotates, some concrete adhered to the inner wall of the mixing drum 2 can be scraped off for further mixing, so that the concrete is mixed more uniformly.

Referring to fig. 1, the damping unit 4 can absorb the mechanical vibration generated by the mixing drum 2 to reduce noise, but some noise is still generated by the collision between the mixing unit 3 and the material in the mixing drum 2. In order to further reduce the noise generated by the concrete mixer, a sound absorption cavity is arranged on the side wall of the mixing drum 2, and sound absorption cotton 5 is filled in the sound absorption cavity. The sound absorption cotton 5 is glass fiber sound absorption cotton 5. The glass fiber is blown by external force in a melting state and is thrown into flocculent fine fibers to form the sound absorption cotton 5. The fibers of the sound absorption cotton 5 are crossed and intertwined with each other to form a plurality of fine gaps. The sound wave that produces in the churn 2 can propagate in numerous inclosed tiny pores when inhaling sound cotton 5, and according to the conduction characteristic of sound wave, the vibration potential energy of sound wave can produce consumption and decay by a wide margin this moment, finally inhales sound cotton 5 and can absorb most of noise to the realization is fallen the noise effectively.

Of course, it is understood that the sound-absorbing cotton 5 can also be made of other materials with good sound-absorbing properties, such as: polyester fibers, and the like.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A concrete mixer, comprising:

the mounting frame is horizontally provided with a first mounting plate, and the first mounting plate is fixedly connected with a first limiting rod extending upwards;

the stirring drum is horizontally provided with a second mounting plate, the second mounting plate is fixedly connected with a second limiting rod extending downwards, the upper end of the stirring drum is provided with a feeding hole, and the side wall of the stirring drum is provided with a discharging hole;

the stirring unit comprises a stirring blade, the stirring blade is accommodated in the stirring cylinder, and the stirring blade can rotate around a vertical axis;

the damping unit is arranged between the first mounting plate and the second mounting plate, and the first mounting plate and the second mounting plate are matched to clamp the damping unit so as to limit the vertical movement of the damping unit;

the damping unit is provided with a containing hole in a penetrating manner along the vertical direction, the first limiting rod penetrates through the containing hole from bottom to top, the second limiting rod penetrates through the containing hole from top to bottom, and the first limiting rod is matched with the second limiting rod to limit the horizontal movement of the damping unit.

2. The concrete mixer of claim 1, wherein: the length of the accommodating hole of the damping unit is greater than the sum of the lengths of the first limiting rod and the second limiting rod.

3. A concrete mixer according to claim 2, wherein: the shock absorption unit is made of acrylic rubber.

4. The concrete mixer of claim 1, wherein: the stirring unit further comprises a stirring motor, the stirring motor is installed at the upper end of the stirring drum, the output end of the stirring motor is in transmission connection with a stirring shaft, the stirring shaft penetrates through the top wall of the stirring drum, and the stirring blades are fixedly connected with the stirring shaft.

5. A concrete mixer according to claim 4, wherein: the lower end of the stirring shaft is fixedly connected with a propeller.

6. A concrete mixer according to claim 4, wherein: one end of the stirring blade close to the side wall of the stirring cylinder is fixedly connected with a scraping plate;

the scraper blade extends along the vertical direction, and the cross section of the scraper blade is arc-shaped.

7. A concrete mixer according to claim 1, wherein: the lateral wall of churn has been seted up and has been inhaled the sound chamber, it has the sound cotton of inhaling to inhale the sound intracavity packing.