CN203499694U - Spiral concrete spraying machine - Google Patents

Abstract

The utility model discloses a spiral concrete jetting machine, which comprises a base, a spray head, and a motor installed on the base. A pushing box carrying a worm is installed on the base. Material pipe, the other end of the feeding pipe is connected with the feed inlet of the nozzle, the transmission device that makes the nozzle rotate is installed on the side wall of the nozzle, the impeller is arranged inside the nozzle, the rotating shaft of the motor is connected with the transmission device, and the motor's After the rotating shaft passes through the outer wall of the nozzle, it is connected with the impeller; the side wall of the nozzle is provided with a quick-setting agent tube. The body of the concrete spraying machine is light and flexible, which is convenient for field handling and construction application, and expands the application range of the concrete spraying machine. Further, the power device of the concrete spraying machine is driven by a motor, which replaces the original compressed air drive, reducing the concrete The manufacturing cost of the jet.

Description

A spiral concrete sprayer

technical field

The utility model belongs to the technical field of tunnel and culvert repair machines and tool equipment, in particular to a spiral concrete sprayer.

Background technique

At present, in the construction of small and small projects in foreign developed countries, manipulators are mainly used for sprayed concrete. In my country, due to factors such as manpower, material resources, and financial resources, manual spraying is still the main method of sprayed concrete in small spaces. The dust is large, the construction environment is poor, the labor intensity is high, and the construction quality is difficult to guarantee. Moreover, due to the heavy weight of some concrete spraying equipment, if it is constructed in a culvert, it may also cause subsidence due to too weak foundation soil, which will affect the construction. Therefore, today's concrete spraying equipment tends to be small and light.

In the prior art, there are mainly mobile shotcrete vehicles and spiral concrete spray machines. Among them, the main body of the mobile shotcrete vehicle is a car body equipped with traveling wheels and driving devices. There is a belt conveyor installed under the silo, and each car must be equipped with at least one belt conveyor. The side wall of the silo has an outlet that is directly opposite to the receiving section of the belt conveyor. The concrete sprayer facing the feeding end of the belt conveyor; a high-pressure air box with at least one air inlet and air outlet is also installed on the car body. The number of belt conveyors in this equipment is four, the corresponding number of concrete sprayers is four, and the number of outlets on the side wall of the silo is four, of which three belt conveyors are installed at the rear of the vehicle body, and one belt conveyor is installed at the front. machine, and the direction of material transportation is opposite, three concrete spraying machines are suspended at the rear of the corresponding car body, and one concrete spraying machine is suspended at the front. This sprayed concrete vehicle has the following disadvantages, the cost is higher, the volume is larger, the weight is heavier, and it cannot enter narrow holes for concrete spraying work, such as smaller culverts.

Spiral concrete spraying machine is composed of hopper, screw shaft conveying port, cone pipe, motor reducer, frame, conveying hose and spray gun. It has the characteristics of small size, light weight, low charging point and simple structure. Its working principle is: the mixture loaded into the hopper is driven by the motor, and the screw shaft is driven to rotate through the reducer, and the helical blade of the screw shaft drives the concrete mixture to the cone pipe, and the compressed air is separated from oil and water, and enters At the center of the screw conveying shaft, the negative pressure is caused by the sudden decrease in volume at the cone tube, so that the mixture brought by the screw blade is subjected to two driving forces, one is negative pressure suction, and the other is the screw blade pushes the conveying force It is transported by the hose, and sprayed to the rock surface by adding water to the spray gun and stirring. The spiral concrete sprayer has the following disadvantages: 1) The cost of the machine is high; 2) The spiral blades are severely worn and need to be replaced frequently; 3) The operator operates the nozzle near the working surface and is directly exposed to the dust environment, which has an impact on the health of workers larger.

Utility model content

In view of the above defects or deficiencies, the purpose of this utility model is to provide a small volume, light weight spiral concrete sprayer.

For achieving above object, the technical scheme of the utility model is:

It includes a base, a nozzle, and a motor installed on the base. A pusher box carrying a worm is installed on the base. The outlet of the pusher box is connected with a feeding pipe through a rotating device. The other end of the feeding pipe is connected to the inlet of the nozzle. The feed port is connected, the side wall of the nozzle is equipped with a transmission device that makes the nozzle rotate, the nozzle is equipped with an impeller, the motor shaft is connected to the transmission device, and the motor shaft is connected to the impeller after passing through the outer wall of the nozzle; The side wall is provided with quick-setting agent pipes.

The rotating device includes an annular block installed at the discharge port of the pushing box, the annular block is clamped with the feeding pipe, and the two ends of the annular block are respectively provided with a front block and a rear block.

The transmission device includes a driving gear and a driven gear meshed with the driving gear. The driven gear is fixed on the outer wall of the nozzle, and the driving gear is fixed on the motor shaft. After the driving gear rotates, it drives the driven gear to rotate.

A material inlet is opened on the side wall of the material pushing box.

The lower end of the pushing box is provided with a supporting body for supporting the pushing box.

An auxiliary device is also included, the auxiliary device includes a nozzle bracket installed on the base, a horizontal bracket is arranged on the tube bracket, a slot is opened in the center of the horizontal bracket, and the motor shaft is sleeved in the slot.

A pusher box support is provided on the outlet of the pusher box, and a motor for rotating the worm of the pusher box is provided at the inlet end of the pusher box, and the motor is installed on the base through the motor bracket.

The base is a ski structure.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model provides a spiral concrete jetting machine. Since the pushing box carrying the worm is connected with the feeding pipe through a rotating device, and the other end of the feeding pipe is connected with the feeding port of the nozzle, the side of the nozzle The transmission device that makes the nozzle rotate is installed on the wall, which can realize the 360° rotation of the nozzle, so that the concrete spraying in the narrow space is more uniform, so that the concrete spraying machine can better adapt to the structure with a narrow internal space. In addition, in the utility model The body of the concrete spraying machine is light and flexible, which is convenient for field handling and construction application, and expands the application range of the concrete spraying machine. Further, the power device of the concrete spraying machine is driven by a motor, which replaces the original compressed air drive, reducing the concrete The manufacturing cost of the jet.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of impeller of the present utility model;

Fig. 3 is a schematic diagram of the nozzle structure of the utility model;

Fig. 4 is a schematic diagram of the connection structure between the nozzle and the feeding pipe of the present invention;

Fig. 5 is a structural schematic diagram of a rotating device of the present invention;

Fig. 6 is a schematic structural view of the transmission device of the present invention;

Fig. 7 is a structural schematic diagram of the auxiliary device of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail.

Referring to Figures 1 to 7, the utility model provides a spiral concrete sprayer, comprising a base 4, a nozzle 11, and a motor mounted on the base 4, the base 4 is a sled structure, and the base 4 is installed There is a material pushing box 2 carrying a worm, a material inlet is provided on one end side wall of the material pushing box 2, a material outlet is provided at the other end of the material pushing box 2, and a material for supporting the material pushing box is provided at the lower end of the material pushing box 2. 2, the support body 5 of the pusher box 2 is provided with a pusher box support 6-2, and the feed port end of the pusher box 2 is provided with a motor for rotating the worm screw of the pusher box 2, and the motor The motor bracket 3 is installed on the base 4; the outlet of the pusher box 2 is connected with a feeding pipe 12 through a rotating device, and the other end of the feeding pipe 12 is connected with the feeding port 10 of the nozzle 11, and the side of the nozzle 11 The transmission device that makes nozzle 11 rotate is installed on the wall, is provided with impeller 28 in nozzle 11, and the rotating shaft of motor is connected with transmission device, and after the rotating shaft of motor passes through nozzle 11 outer wall, is connected with impeller 28; There are pipelines with accelerator on the wall.

The rotating device includes an annular block 13 mounted on the outlet of the pushing box 2, the annular block 13 is clamped with the feeding pipe 12, and the two ends of the annular block 13 are respectively provided with a front block 14 and a rear block 15 .

The transmission device includes a driving gear and a driven gear meshed with the driving gear. The driven gear is fixed on the outer wall of the nozzle 11, and the driving gear is fixed on the motor shaft. After the driving gear rotates, it drives the driven gear to rotate.

The utility model also includes an auxiliary device, the auxiliary device includes a nozzle bracket 6-1 installed on the base 4, a horizontal bracket 25 is arranged on the tube bracket 6-1, and the center of the horizontal bracket 25 is provided with a socket 24, and the motor shaft Set in the socket 24.

Working process and principle of the present utility model:

By conveying the mixed concrete to the pushing box 2 equipped with a middle worm. Driven by the driving motor, the worm pushes the mixture into the connecting feeding pipe 12 . The mixture enters the spray nozzle 11 through the delivery pipe. Since the mixture enters from the outer edge of the impeller, the impeller is driven by the drive motor to knock out the mixture along the tangential direction. The spray head 11 can realize 360° rotation under the drive of the drive motor through the transmission gear, thereby realizing the 360° spraying effect of the concrete sprayer.

In the utility model, the nozzle 11 includes two parts, one part is the impeller, and the other part is the shell. Considering that this equipment uses the tangential force of the impeller to spray concrete out, the principle shown in Figure 5 is adopted in order to ensure that the feed inlet always enters along the tangential direction of the impeller. That is, the rotation of the nozzle 11 drives the feeding pipe 12 connected to the rear side to rotate along the axis of the nozzle 11, thus avoiding the entanglement of the feeding pipe caused by the 360° rotation of the nozzle.

In order to realize the requirement of 360° spraying, the rotating device is: welding a thickened annular block 13 on the outside of the small-radius feeding pipe 12, and then determining the radius of the front block 14 and the rear block 15 according to the size of the small-radius welded ring block Size and distance, the front block 14 is consolidated with the small-radius feed pipe through the screw interface, and the rear block 15 is consolidated with the large-radius feed pipe through the spiral interface. The function of this device is reflected in two aspects: one is that the front block 14 can prevent the concrete mixture from entering into the slits of the delivery pipe 12; the other is to realize the axial rotation of the inner small-radius delivery pipe 12 And the outer large-radius delivery pipe does not move.

The quick-setting agent pipe is connected to the device along the axial direction, the intermediate connecting device is solidified with the quick-setting agent pipe, and the front-end shaft of the nozzle can rotate around its axis. In addition, considering the sealing problem of the connection port when the intermediate transmission shaft rotates the feeding pipe, combined with some existing treatment methods, add a section between the inner side of the connecting sleeve and the outer side of the intermediate rotating shaft that is equal to the thickness of the feeding pipe wall. Suitable rubber hose, the inner diameter of the rubber hose should be slightly smaller than the diameter of the intermediate transmission shaft, so that it can be close to the intermediate transmission shaft, and the thickness of the outer rubber hose should be properly designed according to the size of the connection diameter, so that It meets the requirement of being close to the wall of the outer connection port.

In order to enable the utility model to be pulled in the culvert, the sled structure is used as the base. The base device is mainly composed of 2 slides and a support plate. One end of each slide is tilted at a certain angle to prevent it from falling into the soil or deposits. in things. Each slide is tied with a thick rope, and the construction personnel use the thick rope to pull the sliding device at the hole.

Effect of the present utility model:

1. Save manpower and improve the working environment of workers.

2. It can better adapt to the narrow internal space and the structure is reinforced with shotcrete, which is also an innovation of the original concrete shotcrete machine. Moreover, the sprinkler head can be rotated 360°, which makes the concrete spraying more uniform in a small space.

3. The body of the concrete spraying machine of the utility model is light and flexible, which is convenient for field handling and construction application.

4. The manufacturing materials of the concrete spraying machine of the present invention are relatively common, and the cost is low. The power device used in the new concrete sprayer is driven by a motor, which replaces the original compressed air drive, which reduces the cost.

Claims (8)

1. a spiral sprayer for concrete, it is characterized in that, comprise base (4), shower nozzle (11), and be installed on the motor on base (4), the material pushing box (2) that carries worm screw is installed on base (4), on the discharging opening of material pushing box (2), by tumbler, be connected with conveying pipeline (12), the other end of conveying pipeline (12) is connected with the feeding mouth of shower nozzle (11), the transmission device that shower nozzle (11) is rotated is installed on the sidewall of shower nozzle (11), in shower nozzle (11), be provided with impeller (28), the rotating shaft of motor is connected with transmission device, and the rotating shaft of motor is through after shower nozzle (11) outer wall, be connected with impeller (28), on the sidewall of shower nozzle (11), offer and accelerating admixture pipe (1).

2. spiral sprayer for concrete according to claim 1, it is characterized in that, described tumbler comprises and is installed on the ring block (13) that material pushing box (2) discharging opening goes out, ring block (13) clamps mutually with conveying pipeline (12), and the two ends of ring block (13) are respectively arranged with front catch (14) and rear catch (15).

3. spiral sprayer for concrete according to claim 1, it is characterized in that, described transmission device comprises driving gear and the driven gear being meshed with driving gear, driven gear is fixed on shower nozzle (11) outer wall, driving gear is fixed on machine shaft, after driving gear rotates, drive driven gear to rotate.

4. spiral sprayer for concrete according to claim 1, is characterized in that, on the sidewall of described material pushing box (2), offers feeding mouth.

5. according to the spiral sprayer for concrete described in claim 1 or 4, it is characterized in that, the lower end of described material pushing box (2) is provided with the supporter (5) for supporting material pushing box (2).

6. spiral sprayer for concrete according to claim 1, it is characterized in that, also comprise servicing unit, described servicing unit comprises the lance holder (6-1) being installed on base (4), on pipe holder (6-1), be provided with horizontal support (25), horizontal support (25) center offers running-on (24), and machine shaft is sheathed in running-on (24).

7. spiral sprayer for concrete according to claim 1, it is characterized in that, on the discharging opening of described material pushing box (2), be provided with material pushing box support (6-2), the feeding mouth end of described material pushing box (2) is provided with the motor rotating for rotating the worm screw of material pushing box (2), and motor is installed on base (4) by motor bracket (3).

8. spiral sprayer for concrete according to claim 1, is characterized in that, described base (4) is skiing board structure.

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