JPH0743126U - Truck for cement - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a lorry vehicle equipped with a cement kneading device, which allows sufficient consideration of rainwater and enables stable cement injection into the cement kneading device. [Structure] A truck 101 for a lorry, a cement tank 102 for transporting cement powder, and this cement tank 1
No. 02, a cement kneading device 103 mounted on the rear of the cement tank 102, a powder feeding device 104 led from the rear end of the cement tank 102 and connected to the cement kneading device 103 behind the cement tank, and water is supplied to the cement kneading device 103. A water tank 105 for supplying and a pressure-feeding pump for pressure-feeding the kneaded material kneaded by the cement kneading device 103 are provided. The cement kneading device 103 and the powder supply device 104 are housed in a housing chamber 107. The storage chamber 107 is provided with a door that pivots downward and opens in a horizontal state, and an operator can work on the door in the horizontal state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a cement truck for transporting cement.

[0002]

[Prior art]

 Cement trucks are used as a means of transporting cement, such as transporting cement storage silos to other silos. This lorry vehicle is used as a transport vehicle as described above.For example, even when cement is transported by a lorry vehicle to a construction site, cement is stored at a cement storage place such as a silo provided at the construction site. However, at the time of construction, cement is transferred from this cement storage to a cement kneading machine and cement concrete is being constructed. As a result, at the construction site, a cement storage and a cement kneading device are required, and a pump for pumping the cement kneaded material (mortar) is also required.

On the other hand, in a concrete mixer truck, a cement kneading work preliminarily adjusted by a stirring drum equipped with a spiral blade is moved while stirring and kneading, thereby omitting cement kneading work at a construction site. It has been widely used at present. However, even with a concrete mixer truck, if the time required to reach the construction site is delayed due to traffic congestion, etc., the stirring time in the drum of the concrete mixer truck will become longer and the viscosity of the cement mixture will increase. There is a risk that it will rise and interfere with usage. Also, if a large amount of cement kneaded material is not used at one construction site, a small amount of cement kneaded material that is less than the amount that can be loaded and kneaded will be transported and kneaded by a concrete mixer truck, which is rather uneconomical. It

In order to solve such a problem, Japanese Unexamined Patent Publication (Kokai) No. 5-208412 proposes a cement kneaded material manufacturing truck characterized by mounting a cement kneading device on a concrete mixer vehicle. In this truck, cement is loaded as powder in the drum of a concrete mixer truck, transported to a construction site, and kneaded by a cement kneading device to obtain a cement kneaded product without waste. Is. In this truck, the drum of the concrete mixer truck is rotated to discharge the cement from the cement loading / unloading port in the upper part, and through the powder discharging path and cement powder quantitative feeding device arranged below it. The cement is transferred as powder to a cement kneading device.

[0005]

[Problems to be solved by the device]

 However, in the truck for cement kneading product production, which is a modification of this concrete mixer truck, originally, the cement kneading product containing water is agitated and transported, so that the cement as it is in powder form is transported or it is transported in a drum. It is not possible to transfer from a cement kneading device to a cement kneading device. More specifically, when dust-like cement is discharged from the cement outlet in the upper part of the drum, the problem of dust arises, and rainwater is generated in the drum, in the dust discharge path and in the cement powder. Let's get into the metering device. As a result, when a cement kneading product manufacturing truck is run in rainy weather, the powdery cement in the drum mixes with water, and the powder discharge channel and cement powder quantitative feed There is a risk that water entering the equipment will mix with the cement and clog the path. For this reason, a dustproof cover is installed at the entrance and exit, including measures against rainwater, but it is difficult to completely shut off the water, and improvement is desired.

[0006] Further, in the truck for producing a cement kneaded material, which is a modified concrete mixer truck, the inlet / outlet of the drum is originally used for discharging the kneaded cement mixture by rotating the drum. It is driven by the diesel engine of a concrete mixer truck. The rotation of the drum depends on the rotation of the engine, and if the rotation of the engine changes, a large amount of powdery cement may be discharged. For the purpose of discharging the originally kneaded cement mixture, a slight fluctuation in the amount of discharge was not a problem in use, but when used as a cement kneaded product manufacturing truck, it was discharged from the drum inlet / outlet port. The discharged cement is directly fed to the cement kneading device via the powder discharge passage and the cement powder quantitative feeding device, so that the fluctuation of the discharge amount may cause the overflow of the powder to the outside of the route or the fluctuation of the device. The problem is that it causes overload.

[0007] Furthermore, in the truck for producing a cement kneaded material, which is a modified concrete mixer truck, the cement kneading device is mounted in a relatively narrow portion below the loading / unloading opening above the rear portion of the drum, No sufficient consideration has been given to the safety and workability of workers. For example, as described above, even if an attempt is made to perform the operation while making sure that the cement does not overflow from the powder discharge passage and the cement powder quantitative feeder, the state cannot be confirmed from the ground. In addition, even if the worker tries to get on the part where the cement kneading device is installed, it cannot be secured from a sufficient foothold in a narrow space. In addition, a worker usually works on the ground behind or behind the cement kneading product manufacturing truck, but at a construction site with heavy traffic, such a work position may be dangerous. .

[0008]

[Problems to be solved by the device]

 The first invention of the present application is to provide a lorry vehicle equipped with a cement kneading device, which is capable of stably feeding the cement into the cement kneading device while giving sufficient consideration to rainwater. To do. That is, the first invention of the present application is that the truck 101 of the truck, the cement tank 102 for transporting the cement powder mounted on the truck 101 of the truck, and the truck behind the cement tank 102 and the truck Cement kneading device 103 mounted on the rear part of truck 101, powder feeding device 104 guided from the rear end of cement tank 102 and connected to cement kneading device 103 at the rear of the cement tank, and a truck for a truck truck 101, a water tank 105 mounted at an appropriate location, a water supply device 76 that connects the water tank 105 and the cement kneading apparatus 103, and the kneaded material kneaded by the cement kneading apparatus 103 is pressure-fed to an appropriate location. A pressure feed pump 106, a storage chamber 107 for storing at least the cement kneading device 103 and the powder supply device 104, By providing a cement lorry equipped solves the above problems.

A second invention of the present application is, in the cement truck, described above, in which the storage chamber 107 is provided with a door 107a which is opened by pivoting downward, and the door 017a is pivoted in a substantially horizontal state. The present invention provides a feature that an operator can get on the door 107a that is rotated in the horizontal state.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a cement truck according to an embodiment, FIG. 2 is a plan view of the same, and FIG. 3 is an enlarged rear view of the relevant part.

First, the entire lorry vehicle will be described. The lorry vehicle includes a cement tank 102 for transporting cement powder mounted on a truck 101 of the lorry vehicle, and a lorry behind the cement tank 102. It is provided with a cement kneading device 103 mounted on the rear part of the truck 101 of the car. In this embodiment, as the cement, it is appropriate to use a so-called premix cement in which aggregate is pre-mixed in addition to the cement, but the type of cement can be appropriately changed. A powder supply device 104 is led out from the rear end of the cement tank 102 and supplies the cement to the cement kneading device 103. A water tank 105 is arranged behind the driver's seat of the truck 101 of the lorry vehicle. From this water tank 105, a cement kneader is mixed by a water pipe as a water supply device and a water pressure pump (not shown). Water is supplied to the device 103. Further, as shown in FIG. 3, a pressure feed pump 106 that pressure-feeds the kneaded product kneaded by the cement kneading device 103 to an appropriate location is arranged below the cement kneading device 103. A so-called squeeze pump is used as the pressure pump 106, but the pump type can be changed to another type. In FIG. 3, 106a indicates a suction port of the pressure feed pump 106, and 106b indicates a discharge port. Reference numeral 103a denotes a discharge port of the cement kneading device 103, and the discharge port 103a of the cement kneading device 103 and the suction port 106a of the pressure pump 106 are connected by an appropriate tube to cement mix The cement kneaded material by the device 103 can be pressure fed from the discharge port 106b of the pressure feeding pump 106. The discharge port 103a of the cement kneading apparatus 103 can be used by connecting it to another pressure pump installed at a construction site or the like.

Next, the cement tank 102 will be described in more detail. As the cement tank, it is possible to directly adopt an appropriate type of conventional lorry vehicle, but in this embodiment, as shown in FIG. The bottom parts 121, 121 are formed so as to form two valleys. Further, two cement inlets 122, 122 (see FIGS. 1 and 2) are provided in the upper portion of the tank 102, but the number and shape thereof can be appropriately changed.

As the powder supply device 104, the following configuration is adopted in this embodiment. However, as long as the powder can be supplied from the cement tank 102 to the cement kneading device 103, a screw conveyor, a spring feeder, Various transfer devices such as bucket conveyors may be used. Screw conveyors 141, 141 are arranged in the front-rear direction at the bottoms of the bottoms 122, 122 forming the above-mentioned two troughs of the tank 102, and the cement in the cement tank 102 is transferred to the left and right sides behind the tank. To be done. At the rear ends of the screw conveyors 141, 141, screw conveyors 142, 142 for transferring cement from the left and right sides toward the center are arranged. Further, the fluid transferred to the center by these screw conveyors 142, 142 is transferred to the upper rear part by the screw conveyor 143 and the bucket conveyor. At the upper end of the screw conveyor 143, a cylindrical chute 144 inclined rearward and downward is arranged, and the cement spontaneously drops from the chute 144 and is put into the hopper 11 of the charging chamber 1 of the cement kneading device 103. . At that time, a dustproof cover 145 is arranged to prevent scattering of the cement. The dust-proof cover 145 may be of any type as long as it can prevent the scattering of the cement between the chute 144 and the hopper 11, but in this embodiment, the tip of the chute 144 is covered with a flexible sheet. A flexible tube formed into a shape is attached, and its tip is inserted into the hopper 11. In this way, cement can be injected into the hopper 11 from the chute 144 through the flexible tube 145, and scattering of the cement can be prevented, and the state of injection into the hopper can be seen from the outside. When it is about to overflow, the powder supply device 104 can be stopped or decelerated. The drive source of each conveyor of the powder supply device 104 is an electric motor (not shown).

As the cement kneading device 103, an appropriate cement kneading device may be used, but in this embodiment, the devices shown in FIGS. 4 to 9 were adopted. FIG. 4 is a front view of the cement kneading device, FIG. 5 is a plan view thereof, and FIG. 6 is a left side view thereof. However, the front side in these figures means the rear side of the lorry, that is, the front side as viewed from the rear.

The cement kneading apparatus 103 comprises a right-side charging chamber 1 and a left-side kneading chamber 2. The charging chamber 1 and the kneading chamber 2 are communicated with each other through a communication port 4 as shown in FIG. 7, and a rotary shaft 3 extending in the left-right direction is provided inside the both chambers.

The right end of the rotary shaft 3 is rotatably supported by the right wall of the charging chamber 1, and the left end is rotatably supported by the left wall of the kneading chamber 2, so that the charging chamber 1 and the communication port 4 are connected. , And the entire kneading chamber 2 in the left-right direction. The right end supported by the right wall of the charging chamber 1 is connected via a belt to the drive motor 5 installed below the charging chamber 1 shown in FIG. Has been done. The rotary shaft 3 in this embodiment is composed of a rotary shaft 3a for the charging chamber arranged in the charging chamber 1, a rotary shaft 3b for the kneading chamber arranged in the communication port 4, and the kneading chamber 2. Although it is made of a single piece to facilitate the work such as replacement, it can be changed as appropriate such as a single piece.

A hopper 11 is attached to an upper part of the charging chamber 1, and a cement can be put into the inside from the hopper 11. Inside, a spring member 12 is provided at the bottom. The spring member 12 is for guiding the kneaded material in the charging chamber 1 that has been charged into the communication port 4, and is made of a wire rod having a circular cross section formed in a roughly wound coil shape as shown in FIG. The left end of the spring member 12 is attached to the left end of the loading chamber rotating shaft 3a, while the right end is attached to the right end of the loading chamber rotating shaft 3a, so that the spring member 12 can rotate as the rotating shaft 3 rotates. In the lower part of the charging chamber 1, it is arranged over the entire area from the left end side to the right end side.

The communication port 4 makes the charging chamber 1 and the kneading chamber 2 communicate with each other as described above, and the kneaded material in the charging chamber 1 is introduced into the kneading chamber 2 via the communication port 4. The communication port 4 is provided with a screw conveyor 41 as a conveying means. The screw conveyor 41 in this embodiment is attached separately to the left part of the charging chamber rotary shaft 3a and the right part of the kneading chamber rotary shaft 3b. More specifically, the outer diameter of the spring member 12 is smaller than the inner diameter of the spring member 12. The inside of the charging chamber 1 is arranged such that the portion attached to the charging chamber rotating shaft 3a is arranged inside the diameter of the spring member 12. On the other hand, the part attached to the rotary shaft 3b for the kneading chamber is attached to the left side of the kneading chamber 2 within a range of the extent exposed to the inside of the kneading chamber 2, and both rotary shafts 3a and 3a are attached. By connecting, one continuous screw conveyor 41 is formed.

The kneading chamber 2 is formed by a cylindrical casing 21. A pipe 6 for water or the like is connected to the upper right portion of the casing 21 so that water or the like can be put into the inside from the outside in a fixed amount at a fixed time as described later. In addition, a kneading chamber discharge port 21 a is opened in the lower left part of the casing 21, and the kneaded product after kneading is discharged to the outside of the kneading chamber 2. On the other hand, kneading blades 22 ... 23 are provided inside to knead the cement sent from the injection chamber 1 through the communication port 4 and the water sent from the pipe 6. The kneading blades 22 ... 23 in this embodiment are three blades 22 ... 22 formed by arranging plate members at equal intervals in the circumferential direction on the outer circumference of the kneading chamber rotating shaft 3b as shown in FIG. Box-shaped blades 23 ... 23 formed by arranging three plate members, which are formed by bridging another plate member at the tip of two plate members arranged in parallel in the outer periphery of the shaft 3 in the axial direction, at equal intervals in the circumferential direction. It consists of two types. Then, the kneading blades 22 ... 23 composed of these two kinds of materials are formed over the range from the terminal end of the screw conveyor 41 on the kneading chamber rotating shaft 3b to the left end, and the kneading chamber 2 has a left-right direction. Is provided over almost the entire area of. The kneading blades 22 ... 23 are not limited to those in this state, and can be changed as appropriate.

The supply of water or the like through the pipe 6 for water or the like is performed by mixing the water tank 105 shown in FIGS. 1 and 2 with a water pump 76 below the charging chamber 1 connected by the pipe. As shown in FIG. 9, a pressure switch 40, a pressure rectifier 41, a flow rate device 42, etc. are provided in the middle of the pipe 6 so that it can be fed into the kneading chamber 2 in a fixed amount at a fixed time. It is made and is also interlocked with the rotating shaft 3. Specifically, the water pump 76 is operated, and when the water pressure becomes a constant pressure, the pressure switch 40 senses it and opens the valve 43 to send it into the kneading chamber 2. At the same time, when the pressure switch 40 senses a constant water pressure, the pressure switch 40 instructs the drive motor 5 of the rotary shaft 3 to operate it, and the rotary shaft 3 is rotated according to the flow of water or the like. In this way, a certain amount of kneaded material can be conveyed into the kneading chamber 2 with respect to a certain amount of water. The operation of the above-mentioned powder supply device 104 together with the drive motor 5 can be linked with this.

Further, in this embodiment, a second kneading chamber 7 is arranged below the kneading chamber 2. This second kneading chamber 7 further kneads the kneaded product after being kneaded in the kneading chamber 2 when a hard-to-mix kneader is used, or temporarily stores the kneaded product after kneading. It is provided for convenience in some cases. Therefore, when the kneading chamber 2 can be surely kneaded in a short time, the second kneading chamber 7 may not be passed through, and the kneading chamber discharge port 21a of the kneading chamber 2 may be directly discharged.

As shown in FIG. 6, the second kneading chamber 7 is formed by a casing 73 having a V-shaped outer periphery, and the kneading chamber discharge port 21 a is connected to the left upper part of the casing to form the kneading chamber 2 It is designed so that the kneaded product inside can be put. A second kneading chamber rotating shaft 75, to which second kneading blades 72 ... 72 are attached, is arranged in the left and right direction inside the inside, and the second kneading chamber rotating shaft 75 is a second kneading chamber motor. The kneaded material sent from the kneading chamber 2 is kneaded by being rotated by 76. The second kneading blades 72 ... 72 are configured in the same manner as the kneading blades 22 ... 23 in the kneading chamber 2 in this embodiment, but have different shapes, for example, the kneading blades of the kneading chamber 2. It may be configured to include only the three blades 22 ... A second kneading chamber discharge port 103a is opened in the lower left and right center of the second kneading chamber 7 so that the finally kneaded product is discharged.

Next, a method of using this device will be described. First, the rotary shaft 3 is rotated by an operation switch of an operation box (not shown), and a kneaded material such as concrete material is put into the charging chamber 1 from the hopper 11. As a result, among the kneaded materials that have been charged, the one on the left side in the charging chamber 1 is conveyed to the kneading chamber 2 by the starting end of the screw conveyor 41. On the other hand, the one on the right side in the charging chamber 1 is guided to the screw conveyor 41 side by the rotation of the spring member 12. Therefore, the spring member 12 functions as a screw conveyor, and the kneaded material in the entire range of the charging chamber 1 charged can be conveyed into the kneading chamber 2 via the screw conveyor 41. It should be noted that the above operation box may be provided near the hopper 11 or the like at a location where the state of cement injection into the hopper 11 from the dustproof cover 145 at the tip of the chute 144 of the powder supply device 104 can be confirmed. desirable.

The kneaded product conveyed into the kneading chamber 2 is kneaded in the kneading chamber 2 with water or the like sent from the pipe 6 by the kneading blades 22 ... 23. In the kneading chamber 2, When the kneading chamber 2 is filled with the kneaded material and the amount conveyed by the screw conveyor 41 decreases, and the kneaded material stays at the starting end side of the screw conveyor 41, the kneaded material to the screw conveyor 41 side by the spring member 12 A load is applied to the spring member 12 when the sheet is fed. When this load is applied, as shown in FIG. 8, the spring member 12 contracts on the right side and expands on the left side to elastically deform. As a result, the feeding of the kneaded material to the screen conveyer 41 is substantially stopped. Therefore, even if the rotation of the rotary shaft 3 is not adjusted, it is possible to prevent the kneaded material from being fed into the kneading chamber 2 more than necessary, and the kneading chamber 2 can always and smoothly knead.

The kneaded product kneaded in the kneading chamber 2 enters the second kneading chamber 7 through the kneading chamber discharge port 21 a and is completely kneaded in the second kneading chamber 7 or maintains a sufficient kneading state. , And is discharged from the second kneading chamber discharge port 103a. Then, as described above, it is sucked into the suction port 106a of the pressure-feed pump 106 shown in FIG. 3 and is pressure-fed from the discharge port 106b of the pressure-feed pump 106. Therefore, in the illustrated embodiment, only the tube for connecting the discharge port 103a for the second kneading chamber and the suction port 106a of the pressure feed pump 106 is separately prepared, and the powdered cement is used as the cement kneaded product to construct the construction site. It can be put in any suitable place.

In the kneading chamber 2, when the kneading product starts to enter the second kneading chamber 7 from the kneading chamber 2, the kneading product starts to decrease at the same time. When the amount of the kneaded material in the kneading chamber 2 begins to decrease, the kneaded material staying at the starting end side of the screw conveyor 41 also starts to be conveyed into the kneading chamber 2 by the screw conveyor 41, and the load applied to the kneaded material is reduced. The ring member 12 quickly guides the kneaded material to the screw conveyor 41 side by the elastic force and the rotational force in the axial direction that tries to return to the original state by removing the load. As a result, the kneaded product can be always and smoothly conveyed into the kneading chamber 2.

As described above, in this lorry vehicle, the cement in the cement tank 102 for transporting the cement powder is transferred to the cement kneading device 103 by the powder feeding device 104 and discharged as a cement kneaded product. However, the powder supply device 104 and the cement kneading device 103 are housed in a housing chamber 107 constituted by the front, left, and right side walls and the top. As shown in FIG. 3, openable / closable doors 107a, 107b, 107c are provided at the rear of the storage chamber 107. By closing these doors, the storage chamber is sealed and rainwater is prevented. It completely prevents the powder supply device 104 and the cement kneading device 103 from entering. If it is necessary to completely eliminate dust in order to maintain a favorable environment such as in a residential area, it is possible to completely prevent dust from being discharged to the outside by closing this door when performing work. Is. Also in this case, the discharge port 103a of the cement kneading device 103, the suction port 106a of the pressure feed pump 106, and the discharge port 106b of the pressure feed pump 106 are open at the bottom of the storage chamber 107, so the door is closed. There is no problem in driving as it is.

In this embodiment, the doors 107a, 107b, 107c are composed of a lower door 107a and upper left and right doors 107b, 107c. The left and right doors 107b and 107c are so-called double doors, and are opened by rotating left and right. Further, the lower door 107a is rotated backward from a vertical state with the lower side being a rotation axis, and stops its rotation in a substantially horizontal state. For fixing in the substantially horizontal state, a structure used for a truck bed, such as using a chain (not shown), can be adopted. Then, by removing the chain, the lower door 107a can be brought into a hanging state. As described above, since the lower door 107a is configured to stop its rotation in a substantially horizontal state, an operator can ride on the lower door 107a in the substantially horizontal state to perform work. . Therefore, the operator can easily confirm the supply state of the cement from the powder supply device 104 to the cement kneading device 103. Moreover, even when the traffic is heavy, the operator can get on the lower door 107a. By doing so, you can work safely.

[0029]

[Effect of device]

 A first invention of the present application is to provide a lorry vehicle equipped with a cement kneading device, which is capable of stably feeding the cement into the cement kneading device while giving sufficient consideration to rainwater. It was made.

Further, in addition to the above effects, the second invention of the present application can improve workability and worker safety.

[Brief description of drawings]

FIG. 1 is a side view of a cement truck for trucks according to an embodiment.

FIG. 2 is a plan view of the same.

FIG. 3 is a rear view of the main part of FIG.

FIG. 4 is a front view of the cement kneading device of one example.

FIG. 5 is a plan view of the same.

FIG. 6 is a left side view of the same.

FIG. 7 is a front view of a rotary shaft of the cement kneading device.

FIG. 8 is an explanatory diagram showing a deformed state of a spring member of the cement kneading device.

FIG. 9 is an explanatory diagram of a water system pipe according to an embodiment of the present invention.

[Explanation of symbols]

 101 Truck Truck 102 Cement Tank 103 Cement Mixer 104 Powder Supply Device 105 Water Tank 106 Pressure Pump 107 Storage Room

Claims (2)

[Scope of utility model registration request] 1. A truck (101) for a lorry, a cement tank (102) for transporting cement powder mounted on the truck (101) for a lorry, and a lorry behind the cement tank (102). Cement kneading equipment (103) mounted on the back of a car trolley (101)
And a powder supply device (104) led out from the rear end of this cement tank (102) and connected to a cement kneading device (103) behind the cement tank, and mounted at appropriate points on the truck (101) of the truck. The water tank (105), the water supply device (76) connecting the water tank (105) and the cement kneading device (103), and the kneaded material kneaded by the cement kneading device (103) as appropriate. A lorry vehicle for cement, comprising a pressure pump (106) for pressure-delivering to a location and a storage chamber (107) for storing at least the cement kneading device (103) and the powder supply device (104) described above. 2. The storage chamber (107) is provided with a door (107a) which is opened by rotating downward, and the door (107a) stops the rotation in a substantially horizontal state. Door turned into a state
The lorry for cement according to claim 1, wherein a worker can ride on the (107a).