RU2809050C1 - Mobile continuous mixing device - Google Patents

Abstract

FIELD: cement trucks.

SUBSTANCE: concrete mixing devices for mounting on a truck. The mixer is equipped with a cement hopper, a pair of belts for moving aggregates from the truck bed, and a chute for mixing cement and aggregates with water and for discharging the mixture. At the bottom of the hopper there is a screw mechanism with the ability to move cement to the opening in the bottom of the bunker. Under the hopper inside the casing there is a pair of belts with the possibility of communication with the truck body. The belts are configured to supply materials from the truck body to the loading opening located under the opening in the hopper. The chute is made with a rotating end and a discharge end and contains an elongated tray and a mixing screw within the tray. The chute is rotatable in a vertical plane around the rotating end from a storage position in which the discharge end is located above the rotating end to a discharge position in which the discharge end is located at the same level or below the rotating end. The chute has an inlet for materials at the rotating end, located under the loading opening and combined with the loading hole, a mixture outlet opening at the discharge end, and also a water inlet into the chute. The chute auger is configured to mix and move materials from the material inlet with water to the discharge opening.

EFFECT: possibility of placing a concrete mixing plant on a truck, simplifying the design, reducing energy costs for preparing the mixture.

10 cl, 23 dwg

Description

PREREQUISITES FOR CREATION OF THE INVENTION

Field of technology

The present invention relates to concrete mixing devices and, in particular, to a mobile concrete mixing device for installation on a dump truck or trailer.

State of the art

Many different mobile mixers on a truck chassis are known in the prior art. They are characterized by a number of disadvantages. The truck is specifically designed for the installation of a mixer, that is, in the absence of the need to use a mixer, the truck cannot be used for any other purposes.

The mixing chambers of known mixers are V-shaped. With a maximum width at the top, they taper down towards the belt or auger for unloading. As a result, trucks are characterized by a heavy top and a high center of gravity, which allows them to be classified as vehicles of a high danger category.

The mechanisms for moving mix materials to the rear of the truck, regardless of belt or auger type, are extensive and typically extend the entire length of the chamber: 16 to 18 feet. Due to this length, everything related to the movement of materials must be highly durable, including sprockets, chains, bearings, hydraulic components, etc. In addition, they are subject to increased wear. This also entails additional fuel consumption for the truck.

Belts and augers that extend the entire length of the chamber pose an even greater hazard, increasing the risk of injury.

Since the materials are moved from a location some distance from the vehicle, starting the mixing process poses additional challenges.

Screws and belts often jam, especially when the material is at rest for some time. This is partly due to the compaction of sand in the lower part of the car body during transport on the road.

It is almost impossible to move industrial sand using a long auger due to its constant jamming. The incidence of seizing increases in very cold weather because any moisture in the sand from the cold crystallizes, giving the sand extra hardness. In addition, the V-shape with a taper at the bottom is even more susceptible to environmental factors and therefore freezes faster than the rest of the sand. A known solution is to treat the sand by spraying calcium chloride, but this degrades the quality of the concrete. Another solution involves the use of electric heating rods with high electricity consumption but not very high efficiency.

ESSENCE OF THE INVENTION.

The proposed continuous mixer is designed to be installed in the body of a standard truck instead of a tailgate. The mixer involves the use of a truck body for certain materials to be mixed, in particular sand and gravel. The mixer is equipped with a hopper to hold the cement, a pair of belts to move the aggregates from the truck bed, and a chute to mix the cement and aggregates with water and discharge the mixture when necessary.

The hopper is installed in the truck body as a whole in a strictly vertical position when the body is lowered and with an angle of approximately 45° when the body is raised. If the hopper is narrower than the body, additional spacers can be installed in the spaces between the mixer and the sides to prevent lateral movement of the mixer.

The bunker contains an upper hatch for filling the bunker with cement. The manhole cover is hinged and optionally includes a gasket to prevent moisture penetration.

At the bottom of the hopper there is an auger mechanism that directs the cement into the hopper opening in the lower center of the hopper. The cement flows by gravity to the screw mechanism. Additionally, the center of the screw mechanism is closed with a pipe that prevents cement from flowing out of the hopper opening when the mixer is not in operation.

A pair of tapes in a casing are placed under the funnel. The left tape runs horizontally between the outer end under the left side wall of the hopper and the inner end of the hopper opening. The right belt runs horizontally between the outer end under the right side wall of the hopper and the inner end of the hopper opening. There is a gap between the tapes.

Each belt is a continuous belt of durable, flexible material wrapped around the rollers. For more efficient material gripping, side strips are attached to the belts. The belts are directed at an overall angle of approximately 90° to the bottom of the hopper so that the belts are substantially parallel to the ground during operation. The top of the belt casing is open for loading from the truck bed, and aggregates flow onto the belts by gravity. The belts deliver the aggregates to a slot through which they enter the loading hole in the bottom wall of the casing. The volume of aggregate entering the gap is optionally controlled by restrictive flaps in the pyramidal walls above the gap.

There is a mixing chute under the belt casing. The chute contains an elongated U-shaped tray and a flat ceiling, a turning end and a discharge end. The chute is rotatable at the rotating end in a vertical plane from a storage position in which the discharge end of the chute is above the rotating end to a discharge position in which the discharge end is at the same level or below the rotating end, and vice versa. In the present embodiment, the trough is moved by the action of a hydraulic piston.

The inlet at the rotary end is vertically aligned with the feed opening. The hopper auger mechanism feeds the cement into the hopper opening, from where it enters the loading opening, and the belts direct the aggregates into the loading opening. These dry materials flow through the loading opening into the loading inlet of the chute.

A mixing auger running through the chute mixes the dry materials with water to form concrete as they move along the chute to the discharge end. Water is poured through the inlet to the chute at a distance of approximately 1/4 of the length of the mixing auger from the rotating end to allow mixing of dry materials before water is supplied.

The screw mechanism, belts and mixing screw operate from drive mechanisms. The hopper auger and belts are powered by an electrical wire that directly drives the belts and a drive belt or chain to rotate the hopper auger. The mixing auger is driven by an electric drive located in the preferred embodiment at the discharge end of the chute.

Other objects of the present invention will become clear from the following drawings and the section "Implementation of the invention".

BRIEF DESCRIPTION OF THE DRAWINGS.

A more complete understanding of the essence and purpose of the present invention can be obtained from the accompanying drawings, in which:

FIG. 1 - front axonometric view of the proposed mixer;

FIG. 2 is a partial cross-sectional side view of a mixer installed in the back of a truck in the transport/storage position;

FIG. 3 is a top view of a mixer installed in the back of a truck in the transportation/storage position;

FIG. 4 is a top sectional view of a mixer installed in the back of a truck with aggregates;

FIG. 5 is a partial cross-sectional side view of a mixer mounted in a truck bed in the operating direction, showing the chute moving to a discharge position.

FIG. 6 - rear axonometric view of the mixer;

FIG. 7 - view of the mixer on the left;

FIG. 8 - right view of the mixer with a chute in the unloading position;

FIG. 9 - right view of the mixer with the chute in the maximum raised position;

FIG. 10 - top view in axonometry of the mixer;

FIG. 11 is a detailed axonometric view of the bunker hatch with the lid open;

FIG. 12 is a front view in axonometry with a partial section of the bunker with bunker augers;

FIG. 13 is a front view with a partial section of the bunker with bunker augers;

FIG. 14 - side view in cross section of the tapes;

FIG. 15 is a top cross-sectional view of one belt configuration;

FIG. 16 is a top cross-sectional view of another belt configuration;

FIG. 17 is a perspective view of loading additional material supply valves;

FIG. 18 is a detailed axonometric view of the left belt emptying hatch;

FIG. 19 - longitudinal cross-sectional view of the gutter;

FIG. 20 - side view in cross section of the gutter;

FIG. 21 is a detailed axonometric view of the rotary fastening of the gutter;

FIG. 22 is a perspective view of the main drive mechanism; And

FIG. 23 is a view with spatial division of the parts of the upper fastening of the mixer to the body of the truck.

IMPLEMENTATION OF THE INVENTION.

The present invention, shown in FIG. 1-10, in most embodiments, is a separate permanent mixer 10 with the ability to be installed on and removed from the body 3 of a typical truck 2. The dump truck 2 lifts the body 3 using hydraulic pistons from a lowered position, in which the body 3 is horizontal, to a vertical position, in which the body 3 is inclined downward from the front to the rear of the vehicle 2 at a specified angle of not more than 50°.

In the mixer 10, mixing of some of the materials 5, 6 occurs in the body 3 of the car. For example, in the production of concrete, the car body 3 contains sand 5 and gravel 6, as shown in FIG. 4. During the production of shotcrete, the car body 3 contains sand 5. The conditions for containing materials 5, 6 in the car body 3 are described below.

In the present description, the directions "left" and "right" are defined from the position of looking from the rear of the car 2. The terms "front" and "rear" are taken with respect to the rear of the car 2. In other words, when looking at the mixer 10 from the rear of the car 2, the front of the car is closer to the viewer.

The mixer 10 is equipped with a cement hopper 12 with the ability to accommodate cement 4, a pair of belts 14, 16 for moving aggregates 5, 6 from the car body 3 and a chute 18 for mixing cement 4 and aggregates 5, 6 with water via a screw 150 and for unloading the concrete mixture at necessary.

Since cement 4 is susceptible to the adverse effects of moisture, the cement hopper 12 has a closed design that maximally prevents moisture from entering the volume at least during the period of time preceding the presence of the cement 4 in the hopper 12 before mixing.

As shown in FIG. 2, with the body lowered, the hopper 12 is generally positioned vertically as for transportation. The tilting of the hopper 12 into the working position occurs when the car body 3 is lifted upward, as shown in FIG. 5.

As shown in FIG. 6 and 7, the top wall 30 has a rectangular shape and is horizontal. The front wall 32 is generally rectangular in shape, positioned vertically, and extends toward the bottom of the hopper 12. The rear wall 34 is generally rectangular in shape, located at a maximum angle of approximately 10° with respect to the vertical plane, and protrudes slightly toward the bottom of the hopper 12. Bottom Wall 36 is inclined at an angle ranging from about 30° to 45°, preferably at an angle of about 38°, from the bottom of the front wall 34 to the bottom of the hopper 12. The right wall 38 and the left wall 40 are identical in shape to the front, rear, top and bottom walls and are located vertically. For the embodiment described herein, the hopper 12 is sized such that the internal volume of the hopper 12 is approximately 4 cubic yards.

Actual dimensions vary depending on specific application.

Overall, the width of the 12 hopper (from one side to the other) is slightly less than the width of the 3 car body, so the unit is easy to mount and dismantle without the need for perfect alignment. The sides of the vehicle body 3 are used to prevent lateral movement of the mixer 10 when installed in the body 3. If the hopper 12 is narrower than the vehicle body 3, additional spacers 286 shown in FIG. 10.

Below is the installation of the mixer 10 in the body 3 of the car.

As shown in FIG. 11, in the upper wall of the hopper 12 there is an upper hatch 44 through which cement 4 is loaded. In the hatch 44 there is a generally square or round hole 46 with a raised shutter 48. The hatch cover 50 is attached on hinges 52. The hatch cover 50 is optionally lined with a sealing material 54, for example, rubber, so that in the closed position the hatch cover 50 prevents moisture from penetrating into the hopper 12 to the maximum extent. The handle 56 ensures the opening of the hatch cover 50.

The hatch 44 optionally includes a latch for securing the hatch cover 50 in the closed position.

As shown in FIG. 12 and 13, in the lower part of the hopper 12 there is a screw mechanism 60 that directs cement 4 into the hole 65 of the hopper in the lower part of the central wall. Cement 4 flows by gravity from the hopper 12 to the screw mechanism 60. The screw mechanism 60 includes a left screw 61 and a right screw 62. Two screws 61, 62 can be made in the form of a pair of separate, coaxial shafts 63, on each of which a blade 64 is installed , or in the form of a separate shaft 63 with two blades 64.

In the first configuration of the hopper auger mechanism 60, the individual, coaxial shafts 63 are configured to rotate independently of each other. One advantage of this configuration is that the two screws 61, 62 are configured to rotate at different speeds. Another advantage is that the two screws 61, 62 can be the same, that is, clockwise or counterclockwise, but still rotatable in opposite directions to move the cement 4 to the hopper opening 65. Since they are the same, To produce both screws 61, 62, only one machine or mold is needed. The disadvantage of having two independent screws 61, 62 is that a more complex mechanism is required to mount and rotate the screws 61, 62 separately.

In the second configuration of the hopper auger mechanism 60 shown in FIG. 12 and 13, both screws 61, 62 are mounted on one shaft 63 with the possibility of rotation in the same direction.

Therefore, in order to move cement 4 by both screws 61, 62 to the opening of the hopper 65 in the center, the screw blades 64 must have twists in opposite directions: one screw blade 64 turned in a clockwise direction, and the other screw blade 64 turned in a counterclockwise direction arrows. The design of the mechanism for rotating the screws 61, 62 is much simpler than the design of the mechanism for rotating two independent screws 61, 62 in that it only needs to drive one shaft 63.

In the present embodiment, the shaft 63 has a diameter of 2 to 3 inches, and the blades 64 have a height of 1 to 2 inches, with a combined diameter of these elements ranging from 4 to 7 inches.

The blades 64 have an installation angle of approximately 35°. These dimensions are for illustrative purposes only and may vary depending on the specific purpose.

Optionally, to prevent cement 4 from flowing out of the hopper opening 65 when the mixer 10 is not in operation, the center of the hopper auger 60 is covered by a pipe 190 attached to the top of the hopper auger 60, as shown in FIG. 13. The pipe 190 is attached to the hopper 12 in a non-rotating manner, with the diameter of the pipe being slightly larger than the diameter of the auger to allow the auger mechanism 60 to rotate in the pipe 190 without getting stuck. Pipe 190 is open at both ends, like pipe 192, to allow cement 4 to be captured into pipe 190 from hopper 12 by auger mechanism 60. At its central lower portion, pipe 190 includes an opening 194 aligned with the opening of hopper 65 to allow cement 4 to enter through the opening. hopper 65. In the present embodiment, pipe 190 is approximately 18 inches long.

Optionally, a second blade is provided at an angle of installation in the same direction as the main blade 64 along the entire pipe 190. The two blades prevent cement 4 from flowing through the pipe 190 when the mixer 10 is not in operation. A rubber plug may optionally be installed in the hopper opening 65 to prevent leakage during transportation.

One or more vibrators 272 are optionally mounted behind the feed hopper 12, as shown in FIG. 1. 272 vibrators can be pneumatic or hydraulic. The vibrators 272 prevent the cement from setting within the hopper 12, thereby helping to maintain a continuous flow of cement to the hopper auger mechanism 60 during operation.

A flexible tube 66 extends between the pipe opening 194 and the hopper opening 65 to direct cement 4 into the hopper opening 65. The openings 65, 194 and flexible tube 66 have a generally rectangular or circular cross-section with a cross-sectional area of between 28 (6 feet for a circular section) and 30 (5 feet x 6 feet) square inches. In the present embodiment, flexible tubing 66 is approximately 6 inches long.

Under the loading hopper 12 there is a pair of belts 14, 16 in a casing of 67 belts. As shown in FIG. 6, the left belt 14 extends horizontally between the outer end 78 under the left hopper side wall 38 and the inner end 80 of the hopper opening 65. The right belt 16 extends horizontally between the outer end 82 under the right hopper side wall 40 and the inner end 84 of the hopper opening 65. A gap 86 separates the inner ends 80, 84 of the tapes 14, 16. In the present embodiment, the gap 86 is in the range of 6 inches to 8 inches.

Each belt 14, 16 is a continuous belt 90 of durable, flexible material wrapped around an inner roller 92 and an outer roller 94.

In one configuration, the belts 90 are made of vulcanized rubber in 3 layers or more. To more effectively grip the material 5, 6, side bars 96 are attached to the belts 90. In the present embodiment, the side bars 96 are 1 to 1-1/2 inches high and spaced 6 to 8 inches apart.

As shown in FIG. 15 and 16, inner rollers 92 and outer rollers 94 are attached to inner axles 106 and outer axles 108, respectively, extending between rear wall 68 and front wall 70 of housing 67. Axles 106, 108 are rotatably mounted relative to rear wall 68 and front wall 70. In one configuration shown in FIG. 15, the outer rollers 94 separately rotate the drive mechanism 170 with the ability to move the upper section 98 of the belt 14, 16 from the outer end 78, 82 to the inner end 80, 84, as in section 100.

In another configuration shown in FIG. 16, the drive mechanism 170 drives only the outer roller 94 of one belt, i.e. left tape 14 in FIG. 16. The other belt 16 is driven by a mechanism 160 connecting the inner roller 92 of the left belt 14 to the inner roller 92 of the right belt 16. The mechanism 160 as a whole is formed by pairs of meshed gears 162 attached to the rollers 92, or chain gears or pulleys attached to the rollers 92 with a chain or a feed belt connecting them. Thus, simplification of the drive mechanism 170 is achieved.

Additional support rollers 95 shown in FIG. 15, between the inner roller 92 and the outer roller 94, are installed with the possibility of their free rotation between the rear wall 68 and the front wall 70 of the casing 67. These additional rollers provide additional support for the central part of the belts 14, 16.

In another configuration, not shown in the figures, the belts 90 include metal chains that grip materials. The chain is equipped with teeth to assist in gripping materials 5, 6. For support purposes, the chains slide along metal plates between rollers 92, 94.

The strips 14, 16 are angled downward at approximately 90° ± 15° from the bottom wall 36, as shown in FIG. 6 or at an angle downwards at 135°±15° from the front wall 32.

To operate effectively, the belts 14, 16 must generally run parallel to the ground during the work process, that is, with the vehicle body 3 raised, as shown in FIG. 5. In this regard, the installation angle of the tapes 14, 16 to the bottom wall 36, in particular, the structure of the mixer 10, depends on the volume of the body 3 of the car 2 occupied by this structure in the raised position of the body. In the embodiment shown in the figure, the belts 14, 16 are inclined at an angle in the range of 45°±15° in the horizontal plane when the body is in a raised position, as shown in FIG. 2.

The size of tapes 14, 16 depends on the specific purpose. In the present embodiment, each tape 14, 16 is 35 inches long and 10 inches wide. Rollers 92, 94 have a diameter of 4 to 5 inches and are approximately 30 inches apart on center.

The upper part of the casing 67 of the belts is open for loading from the body 3 of the car, as on unit 72. The fillers 5, 6 are fed by gravity into the upper section 98 of the belts 14, 16. In operation, the belts 15, 16 supply the fillers 5, 6 to the slot 86, through which they fall into the loading hole 102 in the lower wall 74 of the casing 67.

The volume of aggregates 5, 6 approaching the slot 86 is not necessarily controlled by the restrictive flaps 202 shown in FIG. 17. Each gate 202 is built into a wall 203 that extends beyond the bottom wall of the hopper 36.

The outer edges of the walls 203 with the shutters are connected by a seam 204 extending from a point 205 on the bottom wall of the hopper 36 to a point 206 and further from the belt casing 67, followed by a division into two points at the rear wall 68 of the casing intersecting the slot 86. A triangular surface 208 formed by three points 206, 207, is placed on the floor of the vehicle body, as shown in FIG. 5. The two walls 203 and the triangular surface 208 form an overall pyramidal cover 209 covering the slot 86 and the feed opening 102, allowing only the fillers 5, 6 from the belts 14, 16 to pass to the feed opening 102. The walls 203 extending from the seam 204 allow the direction materials 5, 6 onto tapes 14, 16.

Each shutter 202 includes a door 210 that slides vertically into slots 212 within an opening 214 in the shutter wall 203. The volume of fillers 5, 6 supplied to the slot 86 is regulated by the degree of opening of the door 210.

The door 210 is controlled by a damper control mechanism 216. In the present embodiment shown in FIG. 17, the damper control mechanism 216 includes a crank 218 extending through an opening 222 in the front housing wall 70. Krivoship 218 is handed manually with a handle 224. The gear 226 on the shaft of 230 Krivoship 218 is included in the hook with a rail 228 on the door 210. As the crooked -shaped co -carbated wheel 226 moves the rail 228, thereby closing or opening the door 210. For the rotation of the curvature 218 V. Any suitable mechanism may be used to raise and lower door 210.

Alternatively, the damper control mechanism 216 is hydraulically or electrically actuated.

The belt housing 67 includes an optional mechanism 24, 26 for emptying the compartments without mixing the materials 5, 6, shown in FIG. 18. At each end of the casing 67 there is a hatch 276. When the belts 90 move in the opposite direction, that is, from the slot 86, materials 5, 6 move along them to the hatches 276. Each hatch 276 contains a hinged cover 278, which remains open to prevent blocking the passage of materials 5, 6 through hatches 276. In the present embodiment, the covers 278 are supported by chains 280 in the open position.

As stated above, when mixing cement, sand 5 and gravel 6 are mixed with cement 4, and when mixing shotcrete, only sand 5 is mixed with cement 4. In case of mixing concrete, the car body 3 is equipped with a barrier 22 extending from the front to the rear through the center and dividing the body 3 into two compartments 24, 26, as shown in FIG. 4. Sand 5 is placed in one compartment 24, and gravel 6 is in another compartment 26. Any of the aggregates 5, 6 can be placed in any of the compartments 24, 26. Along the left belt 14, the material flows from the left compartment 24 to the loading hole 102 , and along the right belt the material flows from the right compartment 26 to the loading hole 102.

A flexible tube 104 extends between the slot 86 and the feed opening 102 to direct the aggregates 5, 6 to the feed opening 102. The opening 102 and the flexible pipe 104 have a generally rectangular or circular cross-section with a cross-sectional area from 78 (10 inches for a circular section) to 100 (10" x 10") square inches. In the present embodiment, flexible tubing 104 is approximately 6 inches long.

The rotating end 128 of the mixing chute 18 is attached to the belt housing 67 below the feed opening 102. The chute 18 shown in FIG. 19-21, contains an elongated U-shaped tray 116 and a flat ceiling 120. The curved bottom of the tray 116 is made of durable rubber, which is more durable and easier to clean than metal. The trough 18 is generally between 7 and 9 feet in length. Access to the cleaning chute is provided through the ceiling 120. In one configuration, the majority of the ceiling 120 is occupied by a panel 124 that is retractable as in portion 126 of FIG. 6, to provide access inside the chute 18.

The chute 18 is mounted as on the portion 130, rotatable in a vertical plane at the rotating end 128 from the storage position 110 in FIG. 2 and 3 to the unloading position 112 in FIG. 5 and to the maximum raised position 114 in FIG. 9, and vice versa. In its simplest form, the pivot mount 130 shown in FIG. 21 includes a pair of vertical projections 132 of generally triangular cross-section extending downward from the bottom wall 74 of the belt casing, and a pair of vertical projections 134 of generally triangular cross-section extending upward from the rotating end 128 of the trough 18. At the top of each projection 132, 134 there is a hole 136, 138. The holes 136 of the casing protrusions are aligned with the holes 138 of the gutter protrusions, and bolts 140 are inserted through the aligned holes 136, 138 and secured with nuts 142. The bolts 140 function as axes on which the gutter protrusions 134 rotate.

As stated above, the chute 18 is configured to rotate in a vertical plane from a storage position 110 to a discharge position 112 and a maximum raised position 114, and vice versa. In the present embodiment, the mechanism 180 for raising and lowering the chute 18 includes a hydraulic piston 182. As shown in FIG. 7, piston 182 is rotatably attached to chute 18 as in 184 and is also rotatably attached to the front wall 32 of hopper 12 as in 186.

In the storage position 110, the discharge end 144 is located significantly higher than the rotary end 128 to prevent materials from flowing by gravity through the discharge end 144. During transport, the chute 18 is generally parallel to the front wall 32, as shown in FIG. 2. For safety reasons during transportation, the chute 18 may optionally be tied to the hopper 12 by a chain, rope or belt.

In the discharge position 112, the discharge end 144 is level with or below the rotary end 128. A typical discharge position 112 in which the chute 18 is at an angle of approximately 45°-50° to the front wall 32, as shown in FIG. 5, depending on the lift angle of the car body 3.

The maximum raised position 114 represents the maximum angle of the chute 18 relative to the front wall 32. Typically, this angle is approximately 90°, as shown in FIG. 9.

An inlet 146 in the ceiling of the chute 120 at the rotating end 128 is aligned in a vertical plane with the loading hole 102. As shown above, the auger mechanism 60 feeds cement 4 into the opening of the hopper 65, from where it enters the slot 86 between the belts and into the loading hole 102, and the belts 14, 16 feed fillers 5, 6 into the loading hole 102 in the casing 67 of the belts. These dry materials, cement 4 and aggregates 5, 6, enter through the loading opening 102 into the loading inlet 146 of the chute.

The mixing auger 150 passes through the tray 116 of the chute 18 along the entire length of the chute 18. To form concrete 7, the mixing auger 150 mixes dry materials and water as they move along the chute 18 from the loading inlet 146 of the chute to the discharge end 144, from where the concrete mixture is supplied into hole 148 at discharge end 144.

In the present embodiment, the mixing auger shaft 152 has a diameter of 2-1/2 inches, and the blades 154 have a height of from 3-1/2 to 5 inches, with a total diameter of these elements ranging from 9-1/2 to 12 inches. 1/2 inch. The distance between the top ends of the vanes 64 is 9 to 10 inches, and the angle of the vanes 64 is approximately 30°.

The water is poured into the chute 18 at a distance of approximately 1/4 the length of the mixing auger 150 from the rotary end 128. This allows the dry materials to be mixed before the water is supplied. The remaining 3/4 of the volume of the mixing auger 150 is used to mix dry materials in order to maintain an appropriate level of hydration of the concrete 7. As shown in FIG. 5 and 20, water is poured into the trench 18 through the water inlet 166 in the tray 116 through a water hose with a water valve with the ability to mechanically or electronically regulate the corresponding volume of water. Water is supplied to the hose from the work object or water tank mounted on the vehicle chassis.

The auger mechanism 60 of the hopper and belt 14, 16 drives a drive mechanism 170, a typical configuration of which is shown in FIG. 22. Main drive mechanism 170 in FIG. 22 includes a hydraulic motor 172 that directly drives the belts 14, 16 and, through a right-angle gearbox 176 of the hydraulic motor 172, drives a belt or chain 174 to rotate the hopper auger mechanism 60. In an alternative embodiment, a single electric motor or multiple electric motors may be used instead of the hydraulic motor 172.

The mixing auger 150 is driven by a hydraulic motor 156, preferably located at the discharge end 144 of the chute 18.

The mixer 10 is installed in the car body 3 and is generally attached in the same way as the tailgate.

The top of the mixer 10 optionally includes hooks or eyes for lifting the mixer 10 by a crane or lifting device. The top mount is shown in FIG. 23. The figure shows only one side of the hopper 12, with the mounting on the opposite side of the hopper 12 placed in exactly the same location as in FIG. 23. One side 242 of the hopper bracket 240, made in the form of a 90° angle profile, is vertically attached to the hopper 12. One side 248 of the body bracket 246, also made of a 90° angle profile, rests against the opposite side 244 of the hopper bracket 240. A series of holes 250 in the hopper bracket 240 are aligned with a series of holes 252 in the body bracket 246.

The body bracket 246 is attached to the hopper bracket 240 with bolts 254 and nuts 256 through holes 250, 252. The holes 250, 252 are placed so that the body bracket 246 can be mounted at a higher or lower level, taking into account different vehicle body side heights. The number of holes 252 in the body bracket may be greater than the number of holes 250 in the hopper bracket, as shown in FIG. 23, or the number of holes 250 in the hopper bracket may exceed the number of holes 252 in the body bracket, or the brackets 240, 246 may have the same number of holes 250, 252, and all holes 250, 252 may be aligned with each other.

On the opposite side 258 of the body bracket there is a cylindrical strut 260 extending perpendicularly from the side of the hopper 12. The strut 260 is aligned with the hole 8 in the wall of the car body, in the place of which the tailgate is usually located. The pin 262 extends through the body hole 8 and the spacer 260 and is secured by an adjustment pin 264 or similar device through a radial hole 264 in the pin 262. The spacer 260 is replaceable, so the gap to the hopper/body walls may not necessarily be filled with spacers 260 of the appropriate length.

To accommodate the fastener at a lower level, pins or strips 270 are welded horizontally to the wall 68 of the feed belt housing 68 so that they face outward toward the end walls 76, as shown in FIG. 18. The pins 270 are attached to the truck 2 in the same way as the corresponding tailgate pins.

Thus, a mobile continuous mixing device has been illustrated and disclosed above. Since changes may be made to the disclosed apparatus of the present invention without departing from the scope of the present invention, it is to be understood that the above description and accompanying drawings are illustrative and not limiting.

Claims (15)

1. A continuous mobile mixing device, designed to be placed in the back of a truck, containing: (a) a hopper configured to receive cement and comprising a lower portion; (b) a screw mechanism at the bottom of the hopper configured to move cement to an opening at the bottom of the hopper; (c) a pair of belts within a belt housing under the hopper configured to communicate with a truck body, the belts being configured to convey materials from the truck body to a loading opening located below the hopper opening and aligned with the hopper opening; And (d) a chute with a rotating end and a discharge end, the chute comprising an elongated tray and a mixing auger within the tray, the chute being mounted so as to be rotatable in a vertical plane about the rotating end from a storage position in which the discharge end is located above the rotating end, to the unloading position, in which the unloading end is located at the same level or below the rotating end, while the chute contains an inlet for materials at the rotating end, located under the loading hole and combined with the loading hole, a mixture release hole at the unloading end, a water inlet into the chute, when In this case, the chute auger is configured to mix and move materials from the material inlet with water to the discharge opening. (e) drive mechanisms for rotating the hopper auger, belts and mixing auger. 2. The mobile continuous mixing device of claim 1, further comprising one or more vibrators attached to the hopper and designed to assist in maintaining a continuous flow of cement in the hopper to the hopper auger mechanism. 3. A mobile continuous mixing device according to claim 1, characterized in that the hopper auger mechanism contains one shaft and a pair of blades turned in opposite directions to move the cement to an opening in the center of the bottom of the hopper. 4. A continuous mobile mixing device according to claim 1, characterized in that the central part of the hopper screw mechanism is located inside a pipe containing a hole aligned with the hopper opening. 5. A continuous mobile mixing device according to claim 1, characterized in that each belt is made of flexible material with side bars. 6. The mobile continuous mixing device according to claim 1, further comprising a limit valve for each belt to regulate the volume of material entering the loading opening. 7. A continuous mobile mixing device according to claim 6, characterized in that the restrictive flaps are part of a generally pyramidal cover above the loading opening. 8. A continuous mobile mixing device according to claim 1, characterized in that the belts are inclined downwards at an angle in the range of 135°±15° relative to the front wall of the hopper. 9. A continuous mobile mixing device according to claim 1, additionally containing an emptying mechanism with a hatch at each end of the belt casing, which makes it possible to feed materials into the hatches if the belts deviate from the loading hole. 10. A continuous mobile mixing device according to claim 1, characterized in that the water inlet is located at a distance of approximately 1/4 of the distance from the rotating end to the discharge end of the chute.