JPS5948111A - Concrete mixer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a concrete mixer with improved kneading performance.

In general, when using a concrete mixer for long transportation times or when handling fast-hardening cement, the inside of the drum is
1゛) Add only hardening cement and aggregate,
Fresh concrete is produced by timely injection of water.

Conventionally, this water injection action was carried out from the shaft support of the drum rIσ wall, but it took time to pour water due to the resistance of the cement and bone phase, and time was wasted in producing the desired ready-mixed concrete. As a result, mixing was insufficient and the components of the ready-mixed concrete tended to be non-uniform.

The purpose of the present invention is to solve the above-mentioned problems, and in a concrete mixer in which a drum is rotatably mounted on a base, a nozzle capable of spraying is installed near the front wall of the drum near the rear end of the drum (J This is a concrete mixer that can be used as a concrete mixer.

Further, in general, in a tilting type concrete mixer, when mixing fresh concrete, the mixing near the +aI wall in the drum tends to be insufficient, and the fresh concrete tends to gradually adhere to the front wall.

As a solution to this problem, Utility Model No. 5.3, -14927
A removing device U as disclosed in Publication No. 5 has been proposed, which is provided with a scraping part and a resisting part, and performs the removing action by the rotational force and blocking force generated by these parts and the concrete and adherent concrete. It is. In this case, it is not possible to proactively prevent the adhesion of fresh concrete from the beginning of RM, and the removal action is only performed during the discharge.
That is, due to the presence of the resistance part, it rotates together with the drum during kneading, and there is no removing action at all.Furthermore, during the removing action, the smooth scraping part of the embodiment cannot sufficiently scrape.

Another purpose of the present invention is to eliminate the above drawbacks, and in a concrete mixer in which a drum is rotatably mounted on a base for 1 hour, the front wall inside the drum has a shape that follows the shape of the front wall with small resistance. A concrete mixer in which a swinging member is pivotally supported by a hanging portion is provided.

Hereinafter, an embodiment of the present invention will be described. Reference numeral 1 denotes a drum of a concrete mixer, which is mounted on a base 2 such as a vehicle chassis, and has a pair of blades 12 and 13 for crosstalk and discharge inside.
The drum 1 fjil portion is rotatably supported by a shaft support 6, and the rear portion is rotatably supported by a guide roller 4.

Reference numeral 5 denotes a swinging member which is pivoted 6 in the vicinity of a cone-shaped reinforcing portion 1B fixed to the front IIA of the drum 1. The shape of the swinging member 5 is a dogleg shape along the surface of the reinforcing portion 1B, and is formed by bending a plate material. The resistance is small only in the plate part.

Note that the shape of the swinging member 5 is not limited to the present example, and may be the shape of the reinforcing portion 1. B does not exist, and the 1111 wall 1A is flat or curved.

A hopper 7 is connected to the rear of the drum 1, and an opening 8 is formed in the lower part of the hopper, and a lid 9 is provided in the opening 8 so that it can be opened and closed. A nozzle 10 is provided. The nozzle 10 is supplied with water from a hose 11 via a water pump (not shown) from a water tank (not shown) mounted on the base 2, etc.1. The tip of nozzle I Ll is opening 8
It is possible to inject the fuel into the vicinity S of the upper part of the front wall 1A.

In this embodiment, in order to avoid interference with the blades 12 and 13, the spray direction N of the nozzle 10 is oriented upward by about 5 degrees with respect to the horizontal direction H, and the spray position S of the nozzle 10 is set so that only one person on the front wall of the drum It is eccentric to the left string side by C with respect to the center line of (blade 1 so).

16 is a clockwise spiral).

Next, to explain the operation of the present invention, when handling fast-setting cement that takes a long time to transport, cement and aggregate are first charged into the drum 1 through the puff (at this time, the opening of the hopper 7 8 is closed by a lid 9), the lid 9 is opened at a suitable time, and water is injected into the drum 1 from the nozzle 10 through the opening 8. Then, the water passes above the cement and aggregates that have been added, and
The water is sprayed to the vicinity of the upper part of the drum 1, and each part of the drum 1 is sufficiently injected with water.

Fresh concrete is produced by pouring water for an appropriate amount of time and mixing by rotating the drum 1.While mixing continues, the mixing near the front wall becomes insufficient and there is a slight As However, since the swinging member is in the hanging part and the drum 1 is rotating, #5 is always near the front wall 1 (near the reinforcing part 1B)! A scraping action is performed by the second half member 5, so that ready-mixed concrete does not adhere. Although the fresh concrete itself has viscosity, the swinging member 5 does not rotate together with the i-param 1 because the resistance is small.

Also, unlike the above case, from the beginning, fresh concrete is poured from the hopper 9 into the drum 1 and mixed.
If so, except for the water injection work using the nozzle 10, the following Jil!
Since the action of the moving member 5 is similar, the explanation will be omitted.

As described above, according to the present invention, even if the transportation time is long or fast-hardening cement is used, only cement and aggregates are added in advance, and even when performing J, IL, and water, the base In a concrete mixer, a drum is mounted on the same 11I mark on the top, and near the rear end of the drum there is an injection surface II near the wall of the white of the drum 11! By providing a 1-minute nozzle, water can be injected in 1 minute, and fresh concrete can be mixed with a good prefix.

- Also, according to the present invention, in a concrete mixer in which a drum is rotatably mounted on a base, a j-shaped swinging member that follows the shape of the front wall with small resistance is suspended from the front wall of the drum. By pivoting the concrete to the front wall, it is possible to ensure the removal and mixing of fresh concrete from adhering to the vicinity of the front wall during mixing.

[Brief explanation of the drawing]

1... Drum, 2... Base, 5... Swinging member, 6... Pivotal support, 7... Hopper, 8... [
140 [9...i body, 1G...nozzle, -1/2 (Question No. 3, Fig. 4, Procedural amendment 1. Display of the case, 1982 patent Junro 159222 No. 2) , Name of the invention Concrete mixer 3, Relationship with the case of the person making the amendment Patent applicant 1-5-25 Kozone-cho, Nishinomiya City (235) ShinMaywa Industries Co., Ltd. Representative Tamagawa Masaji 4, Agent 6, Amendment As per the appendix, the entire text of the specification has been amended and Figures 5, - 6 and 7 of the drawings have been added. Scope (1) A concrete mixer in which a drum is rotatably mounted on a base, and a nozzle capable of spraying is provided near the front wall of the drum near the rear end of the drum. (2) At the rear end of the drum A hopper is connected and used, and the hopper is provided with an open LI bar 19, a lid body is provided in the opening portion so as to be able to be opened and closed, and a nozzle is provided at a position facing the opening portion. Concrete according to item 1,
Gisa. (6) In a concrete mixer with a drum mounted on a base so that it can move freely, a swinging member shaped to follow the shape of the front wall with low resistance is suspended from the front wall of the drum. mixer. (4) A reinforcing part is provided in the inner groove of the drum, and the swinging member is pivoted close to the reinforcing part, and a cedar-shaped G-shaped part is formed along the surface of the reinforcing part. Tenaru 1 Special J’l”M
The concrete mixer described in item 6 of the OW requirements. 3. Detailed Description of the Invention The present invention relates to a concrete mixer with improved kneading performance. Generally, when transporting a concrete mixer for a long time or when handling fast-hardening cement, only cement and aggregate are placed in the drum in advance, and water is poured in at the appropriate time to produce fresh concrete. Conventionally, this water injection action was often carried out from the shaft of the drum + NF voice, but it took time to pour water due to the resistance of cement and aggregate, and time was wasted in producing the desired ready-mixed concrete.7. As a result, the mixing was insufficient and the components of the ready-mixed concrete tended to be non-uniform. The present invention aims to solve the above-mentioned drawbacks.
This concrete mixer has 8 rotatable drums mounted on top of each other and has 7 nozzles near the rear end of the drum that can inject water into the inside of the drum. It is. Additionally, in general, when mixing fresh concrete in a tilting dllJ type concrete mixer, the mixing tends to be insufficient near the m wall in the drum, and there is a tendency for the green concrete to gradually adhere to the front wall. To solve this problem, as σ)
A removal device such as that disclosed in Publication No. 5 was proposed,
In this case, a scraping part and a resisting part are provided, and the removal action is performed by the rotational force and the hindrance caused by these parts and the fresh concrete and adherent fresh concrete. This actively prevents the adhesion of fresh concrete from the beginning of mixing.
Is it not possible to do so, and the removal action only takes place during the discharge process? It's just a sea urchin. That is, due to the presence of the resistance part, it rotates together with the drum during kneading, and there is no removing action. Also, during the removing action, the hook-shaped scraping part of the embodiment cannot sufficiently scrape. Another objective of the present invention is to eliminate the above-mentioned drawbacks, and in a concrete mixer having a drum rotatably mounted on a base, the internal grinding 11 of the drum can be applied to the front wall with small resistance. The swinging part 44 is shaped like a hanging shape M! 1 is a drum of a concrete mixer, which is mounted on a base 2 such as a vehicle chassis, and has a kneading device inside. , a pair of blades 12.13 of the discharge M■
The claws for the drum 1r) 1 are supported on the 1111II branch O by the roller 4 under the rear guide Ii so as to be rotatable each '-turn. Reference numeral 5 denotes a swinging member which is pivoted 6 in the vicinity of a cone-shaped reinforcing portion 1B fixed to the front wall 1A of the drum 1. The shape of the swinging member 5 is a dogleg shape in one section along the surface of the 61-strong portion 1B, and is formed by bending a plate material.
The resistance received from the fresh concrete, etc. thrown in at drum 1 turn 1jJ1 is a small resistance of only 19 minutes J:i? ,
It becomes. - Note that the shape of the swing 1 member 5 is not limited to this example II and Ijij example, and there is no reinforcing portion 1B, and rjiJ tW 1
It goes without saying that it can be applied to various shapes, such as when A is flat or curved. 7 is a hopper connected to the rear of the drum 1, and 1140II (8) is bored in the lower part of the hopper. 1.D
is provided. The nozzle 10 is supplied with water from a hose (or piping) 11 from a water tank (not shown) mounted on the cradle 2 etc. via a water bottle 11 (not shown).
The tip of 0 faces opening 8, [) 11 wall 1 8)? It is said that it is possible to shoot 1111 to S near the vicinity of IJ. In addition, the injection position S of the nozzle 10 is eccentric to the left by a distance C with respect to the center line of the drum front wall 1A (when the blade 121 has a clockwise spiral shape). Next, to explain the groove structure of the nozzle 10, nozzle 1
A narrow diameter portion 101 is formed on the tip end side and a large diameter portion 102 is formed on the Jk end side.
1. The outer periphery of the proximal end has a connecting part such as a threaded part 1U4, which is connected to the hose 11. Reference numeral 105 is a stabilizer, which is formed by bending a plate material into an approximately figure-eight shape, and has a large diameter part 102. It is installed inside the nozzle, prevents turbulence during fluid flow, and is useful for direct passage without spreading the fluid after it has been ejected from the nozzle. If the drying time is long or if fast-hardening cement is to be used, cement and aggregate should be introduced into the drum 1 from the hopper 7 (at this time, the opening Ml 8 of the bopper is closed by the lid 9). ), open the lid 9 in a timely manner and open the opening 8.
Water is injected into the drum 1 from the nozzle 1o at i11'I. Then, the water passes above the cement and aggregates that have been thrown in, and is sprayed to the vicinity of the upper part of the front wall, so that each part in the drum 1 is sufficiently injected with water. So, do you want to do the water injection work for an appropriate amount of time? Fresh concrete is made into green concrete by kneading by the synchronized movement of the i-gat drums 1. While the mixing continues, the kneading near the front wall 1A seems to be insufficient, but since the swinging member 5 is hanging down and the drum 1 is rotating, the kneading near the front wall 1A (for reinforcement The scraping action is always performed by the swinging member 5 (near part 1B), so that the fresh concrete does not stick to the concrete.Although the ready-mixed concrete itself has viscosity, the moving member 5 has a small resistance. : It does not rotate together with the drum 1. 1. J↓ above, unlike in the case of joining, if the fresh concrete is mixed from the beginning into the re-drum 1 from the hopper 9, the subsequent swinging member will Since the effect of 5 is the same, a; ν and light are omitted. As described above, according to the present invention, even when pouring only cement and aggregate in advance and pouring water at the time of +li or when pouring water, the base can In a concrete mixer with a 4FF drum that can be cut freely in J2, a nozzle that can spray is installed near the front wall of the drum near the edge of the drum. According to the present invention, in a concrete mixer in which a drum is mounted on a J-man table so as to be freely rotatable, the 2nd front wall of the drum has a small resistance along the 1111 wall shape. ]jδ
Drooping moving parts! Since it is pivoted on the shore, it is possible to reliably remove and cross-wire the concrete without it adhering to the vicinity of the front wall during cross-talk.・t+iii j'ft explanation of the drawings The 11th QI is an overall side view of the 46 light, Figure 2 is a view taken along the line A-A in Figure 1,
Figure 6 is a perspective view (partially cut away), Figures 1 and 4 are enlarged vertical sections of the main parts, Figure 5 is a partial vertical cross-section of the nozzle, Figure 6 is a rear view of the nozzle, Figure 7 is a perspective view of the stabilizer. 1...Drum, 2...Base, 5...Swinging member, 6...Pivot, 7...Hopper, 8...1
110 parts, 9...lid body, 10...nozzle. Figure 6 Figure 5 1 Part of Figure 7.

Claims (1)

[Claims] (1) In a concrete mixer in which a drum is rotatably mounted on a base, a nozzle capable of spraying is provided near the rear end of the drum near the front wall inside the drum. mixer. (2) A hopper is connected to the rear end of the drum, and a hole can be sunk into the hopper, and a lid can be freely opened into the opening M-. tt + j {Concrete mixer as described in item 1 above, comprising a nozzle located at a position facing the opening of the sun. (6) In a concrete mixer with a rotatable drum mounted on a base, there is a small resistance on the front wall of the drum.
:+;N A concrete mixer consisting of a cedar-shaped swinging member that is pivoted in a hanging state. (4) A reinforcing part is provided in the front part of the drum, and the swinging member is pivoted close to the reinforcing part.
The concrete mixer according to claim 6, which has a shape along line 111 or has a length of 4t.