CN111497024A

CN111497024A - Noise reduction structure of concrete mixing tank for concrete transport vehicle

Info

Publication number: CN111497024A
Application number: CN202010339301.2A
Authority: CN
Inventors: 喻明
Original assignee: Chongqing Jiayao Goods Concrete Co ltd
Current assignee: Chongqing Jiayao Goods Concrete Co ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-08-07

Abstract

The invention belongs to the field of concrete transportation equipment, and particularly discloses a noise reduction structure of a concrete mixing tank for a concrete transport vehicle. The tank body is rotatably connected with a shaftless double-helix blade, and the center line of the double-helix blade is hollow. The right end of the double-helix blade is fixed on the base, the left end of the double-helix blade is fixedly connected with a bearing disc with a center hole, the outer ring of the bearing disc is rotatably connected with the inner wall of the tank body through a bearing, a rotating shaft is arranged at the hollow part of the double-helix blade, the left end of the rotating shaft is fixedly connected with the left end of the tank body, 4 baffle plates are fixed on the periphery side of the rotating shaft and form a cross shape, the baffle plates are made of plastics, a plurality of leakage holes are formed in the baffle plates, and the inner ring of the bearing. The end part of the baffle is fixedly connected with a stop bar, and a long hole is arranged between the stop bar and the baffle. This scheme can reduce the stone in the concrete when falling down with the noise that the jar body collision produced.

Description

Noise reduction structure of concrete mixing tank for concrete transport vehicle

Technical Field

The invention belongs to the field of concrete transportation equipment, and particularly relates to a noise reduction structure of a concrete mixing tank for a concrete transport vehicle.

Background

Urban noise refers to various noises generated in urban construction, transportation, industrial production, daily life and the like. Urban noise is increasingly disturbing and harmful to residents, and becomes a public nuisance in urban environments. Urban noise is mainly: traffic noise, industrial noise, building construction noise, social life noise. Urban noise interferes with work, study, rest and sleep of residents, seriously harms human health and causes diseases and noise deafness.

The concrete mixing transport vehicle or called mixing truck is a special truck for conveying premixed concrete for construction; due to its shape, it is also commonly referred to as a vivipara. The truck is provided with a cylindrical tank body for carrying mixed concrete, and the tank body can be always kept rotating in the transportation process so as to ensure that the carried concrete cannot be solidified. After the concrete is transported, the interior of the tank body is generally flushed with water, so that the hardened concrete is prevented from occupying space.

The stirring device in the concrete mixing and transporting truck mainly comprises a tank body and an auxiliary supporting part thereof. The tank body is a concrete loading container, and the concrete moves along the spiral direction of the blades during rotation and is mixed and stirred in the continuous lifting and turning processes. In the feeding and transporting processes, the tank body rotates forwards, the concrete moves inwards along the blades, and during discharging, the tank body rotates backwards, and the concrete is discharged outwards along the blades. However, in the process of stirring, stones in the concrete rise to the upper part of the tank body under the action of centrifugal force, and then collide with the side wall of the tank body when falling to generate noise, so that the influence on the environment is great.

Disclosure of Invention

The invention aims to provide a noise reduction structure of a concrete mixing tank for a concrete transport vehicle, which is used for reducing noise generated by collision between stones in concrete and the tank body when the stones fall.

In order to achieve the purpose, the basic scheme of the invention provides a noise reduction structure of a concrete mixing tank for a concrete transport vehicle, which comprises a base and a tank body, wherein a shaftless double-helix blade is rotatably connected in the tank body, the central line of the double-helix blade is hollow, the double-helix blade is fixed on the base, a baffle is arranged at the hollow part of the double-helix blade, one side end part of the baffle is fixed at the end part of the tank body, and the tank body is connected with a driving device.

The first optimization scheme is as follows: the number of the baffle plates is at least 2, the baffle plates are fixed in a crossed mode, and 1 baffle plate is vertical.

And the second optimization scheme is as follows: the baffle is 2, and two baffles are fixed alternately and are cross.

And the optimization scheme is three: the end part of the baffle is fixedly connected with a stop strip.

And the optimization scheme is four: and a long hole is formed between the stop bar and the baffle.

And the optimization scheme is five: the baffle is provided with a plurality of leak holes.

The beneficial effect of this basic scheme lies in: 1. this scheme sets up the baffle in double helix blade's central line department, has blockked the stone in the concrete and has flown to jar side wall to make the stone fall in the bottom of the jar body. Because of gravity, some concrete is located the bottom of jar body all the time, and then makes stone and jar body bottom unset muddy earth striking, has played the effect of noise abatement.

2. The crossed baffle plates enable stones to stay at the crossed positions of the baffle plates and the baffle plates after the stones are impacted by the baffle plates, so that the speed of the stones is temporarily zero, the kinetic energy of the impact of the stones is reduced, and the noise is further reduced.

3. The cross-shaped baffle can bear more stones, so that the stones can stay on the baffle for a long time.

4. The setting of shelves strip prevents that the stone from breaking away from the baffle because of centrifugal force, collides with the jar side wall.

5. The arrangement of the long holes and the leakage holes can enable the part with fluidity in the concrete to be separated from the baffle, so that the part falls to the double-spiral blade to be continuously stirred.

Drawings

FIG. 1 is a schematic structural diagram of a noise reduction structure of a concrete mixing tank for a concrete truck according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 (base not shown);

fig. 3 is a view in the direction B.

Detailed Description

The present invention will be described in further detail below by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a rotating shaft 1, a bearing disc 2, a tank body 3, double-helix blades 4, a stop strip 5, a baffle 6, a base 7, a long hole 8 and a leak hole 9.

Example (b): the concrete mixing tank noise reduction structure for the concrete transport vehicle in the scheme comprises a tank body 3 and an inclined base 7 as shown in figures 1 to 3. The tank body 3 is rotatably connected with a shaftless double-helix blade 4, and the center line of the double-helix blade 4 is hollow. The right end of the double-helix blade 4 is fixed on the base 7, the left end of the double-helix blade is fixedly connected with a bearing disc 2 with a central hole, and the outer ring of the bearing disc 2 is rotatably connected with the inner wall of the tank body 3 through a bearing.

As shown in fig. 1 and 2, a rotating shaft 1 is arranged in a hollow part of a double-helix blade 4, the left end of the rotating shaft 1 is fixedly connected to the left end of a tank body 3, four baffle plates 6 are fixed on the periphery of the rotating shaft 1 and form a cross shape, the baffle plates 6 are made of plastics, a plurality of leakage holes 9 are formed in the baffle plates 6, and the diameters of the leakage holes 9 are 20 mm. The inner ring of the bearing disc 2 is rotationally connected with the rotating shaft 1 through a bearing. The end of the baffle 6 is fixedly connected with a stop bar 5, and as shown in fig. 3, a long hole 8 is arranged between the stop bar 5 and the baffle 6. The outside of the left side of the tank body 3 is connected with a gear reducer which is driven by a motor (the motor and the gear reducer are not shown in the figure).

When the concrete is stirred, the double helical blades 4 and the tank 3 rotate relatively, and the concrete rises to the upper part of the tank 3 under the action of the double helical blades 4 and falls down, and simultaneously flies to the tank 3 at the opposite side. But due to the presence of the baffle 6 the concrete is stopped by the baffle 6 and falls onto the other baffle 6 which crosses it. At this time, the baffle 6 also rotates along with the tank body 3, the part with fluidity in the concrete is separated from the baffle 6 through the long hole 8 between the baffle 5 and the baffle 6 and the leak hole 9 on the baffle 6, and the larger stones in the remaining concrete stay in the included angle formed by the baffle 6 and the other baffle 6, so that the power of the stones is changed to zero. With the rotation of the baffle 6, the stones finally fall to the bottom of the tank 3. Since the baffles 6 prevent the stones from moving towards the side walls of the tank 3, most of the stones will fall to the bottom of the tank 3. Because of gravity, some concrete is located the bottom of jar body 3 all the time, and then makes stone and the concrete striking that does not solidify, has played the effect of noise abatement. Because the noise is produced by stone impact jar body 3 inner walls, consequently for only setting up the noise reduction layer of plastics material at the inner wall, the direct kinetic energy of less stone of this scheme has fundamentally reduced the production of noise, and the effect is obvious.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A structure of making an uproar falls in concrete mixing jar for concrete truck, its characterized in that: the double-helix blade type water-cooling tank comprises a base and a tank body, wherein a shaftless double-helix blade is rotatably connected in the tank body, the center line of the double-helix blade is hollow, the double-helix blade is fixed on the base, a baffle is arranged at the hollow part of the double-helix blade, one side end part of the baffle is fixed at the end part of the tank body, and a driving device is connected on the tank body.

2. The concrete mixing tank noise reduction structure for a concrete transporting vehicle according to claim 1, wherein: the number of the baffle plates is at least 2, the baffle plates are fixed in a crossed mode, and 1 baffle plate is vertical.

3. The concrete mixing tank noise reduction structure for a concrete transporting vehicle according to claim 2, wherein: the baffle is 2, and two baffles are fixed alternately and are cross.

4. The concrete mixing tank noise reduction structure for a concrete transporting vehicle according to claim 2 or 3, wherein: the end part of the baffle is fixedly connected with a stop strip.

5. The concrete mixing tank noise reduction structure for a concrete transporting vehicle according to claim 4, wherein: and a long hole is formed between the stop bar and the baffle.

6. The concrete mixing tank noise reduction structure for a concrete transporting vehicle according to claim 5, wherein: the baffle is provided with a plurality of leak holes.