Detachable wet-type high-strength concrete sprayer

Abstract

The utility model discloses a detachable wet-type high-strength concrete sprayer, and relates to the technical field of concrete sprayers, the wet-type high-strength concrete sprayer comprises a frame, a main motor assembly, an accelerator motor pump assembly, a pump stator and rotor assembly, a basic hopper and a heightened hopper, the frame comprises a top frame and a bottom frame, the upper end of the basic hopper is connected with the top frame, and a heightened hopper is detachably arranged on the basic hopper; the pump stator and rotor assembly is installed in front of the base hopper on the bottom frame. A mounting bracket is arranged above the pump stator and rotor assembly on the front side surface of the basic hopper; the accelerator motor pump assembly is detachably mounted on the mounting bracket; and the main motor assembly is detachably mounted behind the basic hopper on the top frame. According to the utility model, the heightened hopper, the main motor assembly and the accelerator motor pump assembly which are detachably arranged can be divided into several parts which are transported to a construction site and then assembled, so that the problems of transportation difficulty and the like caused by overweight overall weight and overlarge size of the machine are solved.

Description

Technical Field

[0001] The utility model relates to a concrete spraying machine, in particular to a detachable wet high-strength concrete spraying machine. Background Art

[0002] In recent years, shotcrete technology has been increasingly valued in various construction fields due to its simple process, unique effects, economical cost and wide range of uses. Concrete spraying machine is the main equipment for concrete spraying. It uses compressed air or other power to transport the mixed materials in a certain proportion through pipelines and spray them at high speed onto the sprayed surface to solidify and harden, thereby forming a concrete support layer. Concrete spraying machines are mainly divided into two categories: dry spraying machines and wet spraying machines. Since dry spraying machines produce large dust and rebound during construction, and the dust generated by dry spraying operations is harmful to the health of workers, especially in narrow alley projects, dust pollution is more serious. With the enhancement of people's environmental awareness and the improvement of requirements for the quality of shotcrete, more and more wet concrete spraying machines have been put into use.

[0003] When the application scenarios of UHPC spraying construction are special environments such as deep foundation pits, tunnels, mines, underground projects, etc., it is also necessary to consider whether the equipment is easy to transport and whether the working surface is convenient for construction. All parts of the existing high-strength concrete spraying machine are fixed on the frame, the overall weight is large, and it is difficult to transport.

[0004] Therefore, it is necessary to develop a wet high-strength concrete spraying machine with simple structure, detachable assembly and convenient transportation. Summary of the invention

[0005] The purpose of the utility model is to solve the shortcomings of the above-mentioned background technology and provide a wet high-strength concrete spraying machine which has a simple structure, can be disassembled and assembled, and is convenient for transportation.

[0006] The technical solution of the utility model is: a detachable wet high-strength concrete spraying machine, including a frame and a main motor assembly, an accelerator motor pump assembly, a pump stator and rotor assembly, a basic hopper, and a heightened hopper.

[0007] The frame includes a top frame and a bottom frame which are arranged up and down and connected as a whole, a walking component is provided at the bottom of the bottom frame, the basic hopper is installed in the frame and the upper end is connected to the top frame, and a heightening hopper is detachably provided on the basic hopper;

[0008] The pump stator and rotor assembly is installed in front of the base hopper on the chassis, and the pump stator and rotor assembly is transmission-connected to the screw stirring assembly arranged at the bottom of the base hopper for outputting concrete;

[0009] A mounting bracket is provided on the front side of the base hopper above the pump stator and rotor assembly, and the quick-setting agent motor pump assembly is detachably mounted on the mounting bracket;

[0010] The main motor assembly is detachably mounted behind the basic hopper on the top frame, and the main motor assembly is in driving connection with a screw stirring assembly arranged in the basic hopper.

[0011] Preferably, the basic hopper and the heightening hopper are detachably connected through a connecting assembly. The connecting assembly includes a pair of end sleeves coaxially and spaced at the top of the front and rear sides of the basic hopper, and intermediate sleeves arranged between each pair of end sleeves correspondingly on the front and rear sides of the heightening hopper. Each pair of end sleeves of the basic hopper and the corresponding intermediate sleeves are pin-connected through a pin shaft.

[0012] Preferably, a stator outer sleeve is provided in front of the basic hopper on the chassis, and the pump stator-rotor assembly is installed in the stator outer sleeve.

[0013] Further, a through groove is axially formed at the top of the stator outer sleeve along the axial direction of the pump stator-rotor assembly. Vertical ears are formed by upward extension of the two side edges of the through groove, and the two vertical ears are connected through an adjusting bolt.

[0014] Preferably, the mounting bracket includes a horizontal bottom plate and support rib plates below the horizontal bottom plate. An L-shaped mounting plate is further provided on the horizontal bottom plate. The L-shaped mounting plate includes a horizontal portion fitting and fixed to the top surface of the horizontal bottom plate and a vertical portion connected above the horizontal portion. The accelerator motor pump assembly is bolted to the vertical portion of the L-shaped mounting plate.

[0015] Preferably, the main motor assembly includes a vertical motor with the driving end facing downward and a right-angle reduction gearbox in driving connection with the vertical motor. The right-angle reduction gearbox is in driving connection with the screw stirring assembly. The vertical motor is detachably connected to the top frame, and a motor cover with an open bottom is detachably provided on the top layer frame to protect the vertical motor.

[0016] Further, the detachable wet high-strength concrete spraying machine further includes an electric control box. The electric control box is bolted above the top of the motor cover, and the electric control box is electrically connected to both the vertical motor and the accelerator motor pump assembly.

[0017] Further, limiting protrusions are provided on the front and rear inner walls of the upper part of the heightening hopper, and a filtering protection net is provided on the limiting protrusions.

[0018] Further, the traveling components include a pair of wheels arranged at the rear of the chassis and legs arranged at the front of the chassis.

[0019] Further, a contracted spraying port is provided at the front end of the pump stator-rotor assembly, and a handle and a pressure gauge for reflecting the internal pressure of the spraying port are provided at the top of the spraying port.

[0020] The beneficial effects of the present utility model are as follows:

[0021] 1. In the utility model, the shotcrete machine can be divided into several parts and transported to the construction site for assembly through the detachable high hopper, main motor assembly, and accelerator motor pump assembly, which solves the problems such as difficult transportation caused by the overweight and oversize of the whole machine.

[0022] 2. In the utility model, a pair of end sleeves on the front and rear sides of the base hopper and the middle sleeve of the high hopper are pin-connected through a pin shaft. The pin shaft can be quickly inserted to install the high hopper and can also be quickly removed to disassemble the high hopper, realizing the detachable installation of the high hopper conveniently and quickly.

[0023] 3. In the utility model, a pair of vertical ears are formed at the edge of the through groove at the top of the stator outer sleeve. The vertical ears are connected by a plurality of adjusting bolts, which can adjust and fasten the pump stator-rotor assembly to make it firmly installed on the vehicle frame.

[0024] 4. In the utility model, the accelerator motor pump assembly is installed on the mounting bracket on the front side of the base hopper. The support rib plate provides stable support below the horizontal bottom plate. The L-shaped mounting plate is fitted and installed on the horizontal bottom plate, and the detachable installation of the accelerator motor pump assembly can be quickly realized by bolt connection with the vertical part of the L-shaped mounting plate.

[0025] 5. In the utility model, the motor of the main motor assembly is vertically installed. Compared with the horizontal installation of the motor, the vertical motor can reduce the horizontal size of the concrete shotcrete machine, enabling it to carry out shotcreting operations in special environments and having a wide range of applications.

[0026] 5. In the utility model, a motor cover is also provided on the top frame of the vehicle frame to protect the vertical motor. At the same time, the motor cover can be used to install the electric control box, and the electric control box is bolt-connected to achieve detachable installation.

[0027] 6. In the utility model, a filter screen is detachably arranged in the high hopper for the concrete to enter evenly downward, facilitating the uniform injection of the concrete into the pump stator-rotor assembly after being stirred by the screw stirring assembly.

[0028] 7. In the utility model, a handle is provided at the top of the material spraying port to facilitate pulling the concrete shotcrete machine forward. A pressure gauge is provided on the material spraying port to monitor the pressure change in the pipeline in real time to ensure the smooth progress of spraying. Description of the Drawings

[0029] Figure 1 It is the left view of the wet high-strength concrete shotcrete machine of the utility model

[0030] Figure 2 is Figure 1 The partial enlarged view at the mounting bracket in

[0031] Figure 3Front view of the wet high-strength concrete spraying machine of the present utility model (pressure gauge omitted)

[0032] Figure 4 Top view of the wet high-strength concrete spraying machine of the present utility model

[0033] Figure 5 Longitudinal sectional view of the wet high-strength concrete spraying machine of the present utility model

[0034] Figure 6 Transverse sectional view of the wet high-strength concrete spraying machine of the present utility model

[0035] Figure 7 is Figure 6 Partial enlarged view at the outer sleeve of the stator in

[0036] Figure 8 Schematic diagram of the spray gun

[0037] Wherein: 1 - main motor assembly; 2 - accelerator motor pump assembly; 3 - pump stator-rotor assembly (31 - material spraying port, 32 - handle, 33 - pressure gauge, 34 - spray gun, 35 - accelerator port); 4 - basic hopper (41 - end shaft sleeve, 42 - limit projection); 5 - extended hopper (51 - intermediate shaft sleeve); 6 - screw stirring assembly; 7 - pin shaft; 8 - mounting bracket (81 - support rib plate, 82 - horizontal bottom plate, 83 - L-shaped mounting plate, 83.1 - horizontal part, 83.2 - vertical part); 9 - filter mesh; 10 - electric control box; 11 - vertical motor; 12 - right-angle speed reducer; 100 - vehicle frame; 101 - chassis; 102 - top frame; 103 - outer sleeve of the stator; 104 - through slot; 105 - vertical ear; 106 - adjusting bolt; 107 - motor cover; 108 - wheel; 109 - support leg. Detailed implementation manners

[0038] The embodiments of the present utility model will be described in detail below. The same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation of the present utility model.

[0039] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0041] As Figures 1 to 7 shown, this embodiment provides a detachable wet high-strength concrete spraying machine, which includes a frame 100, a main motor assembly 1, a accelerator motor pump assembly 2, a pump stator-rotor assembly 3, a base hopper 4, a heightening hopper 5, and an electric control box 10. Taking the length direction of the frame 100 as the longitudinal direction ( Figure 1 the left-right direction in Figure 3 ), and the width direction as the transverse direction (

[0042] the left-right direction in Figure 3 ), the concrete spraying machine travels forward longitudinally.

[0043] The frame 100 includes a top frame 102 and a bottom frame 101 which are arranged up and down and connected as a whole. Walking components are provided at the bottom of the bottom frame 101. The base hopper 4 is installed inside the frame 100 and its upper end is connected to the top frame 102. A heightening hopper 5 is detachably provided on the base hopper 4. In this embodiment, both the base hopper 4 and the heightening hopper 5 are conical hoppers that gradually contract downward on both lateral sides (

[0044] the left and right sides in

[0045] The pump stator-rotor assembly 3 is installed on the stator outer sleeve 103 provided in front of the base hopper 4 on the chassis 101. The pump stator-rotor assembly 3 is drivingly connected to the screw stirring assembly 6 provided at the inner bottom of the base hopper 4 for pushing out the concrete. A through slot 104 is axially formed at the top of the stator outer sleeve 103 along the axis of the pump stator-rotor assembly. The two side edges of the through slot 104 extend upward to form vertical ears 105, and the two vertical ears 105 are connected by adjusting bolts 106. In this embodiment, the pump stator-rotor assembly 3 rotates about its longitudinal axis to convey the concrete forward. The stator outer sleeve 103 is also axially arranged longitudinally and is fixedly connected to the chassis 101. The through slot 104 runs longitudinally through the top of the stator outer sleeve 103. A plurality of adjusting bolts 106 are arranged at longitudinal intervals, and each adjusting bolt 106 transversely passes through the two vertical ears 105 to connect them. The adjusting bolts 106 can control the tightness of the pump stator-rotor assembly 3 in the stator outer sleeve 103. When the pump stator-rotor assembly 3 becomes loose due to long-term use of the shotcrete machine, the adjusting bolts 106 can be tightened to contract the distance between the two vertical ears 105, realizing the fastening installation of the pump stator-rotor assembly 3.

[0046] The function of the pump stator-rotor assembly 3 is to suck the concrete from the base hopper 4 of the wet shotcrete machine and push the concrete forward through rotational movement. The front end of the pump stator-rotor assembly 3 is provided with a contracted material spraying port 31. A handle 32 and a pressure gauge 33 for reflecting the internal pressure of the material spraying port 31 are provided at the top of the material spraying port 31, which can monitor the pressure change in the pipeline in real time, avoid blockage, and ensure the smooth progress of spraying. In some preferred examples, the pressure gauge 33 can also be connected to an alarm system. A threshold value is preset in the alarm system. When the pressure change detected by the pressure gauge 33 exceeds the preset threshold value, the alarm system will issue an alarm to remind the operator to handle the fault in time, preventing further damage to the system or affecting the use effect.

[0047] An installation bracket 8 is provided on the front side of the base hopper 4 above the pump stator-rotor assembly 3. The accelerator motor pump assembly 2 is detachably installed on the installation bracket 8. The installation bracket 8 includes a horizontal bottom plate 82 and support ribs 81 below the horizontal bottom plate 82. An L-shaped mounting plate 83 is also provided on the horizontal bottom plate 82. The L-shaped mounting plate 83 includes a horizontal portion 83.1 that fits and is fixed to the top surface of the horizontal bottom plate 82 and a vertical portion 83.2 connected above the horizontal portion 83.1. The accelerator motor pump assembly 2 is bolted to the vertical portion 83.2 of the L-shaped mounting plate 83. In this embodiment, the plate surface of the support rib 81 is in the vertical direction, providing stable support below the horizontal bottom plate 82. The horizontal portion 83.1 of the L-shaped mounting plate fits and is installed on the horizontal bottom plate 82, and the accelerator motor pump assembly 3 can be quickly and detachably installed by bolt connection with the vertical portion 83.2 of the L-shaped mounting plate.

[0048] The main motor assembly 1 includes a vertical motor 11 with its drive end facing downwards and a right-angle speed reducer 12 that is drivingly connected to the vertical motor 11. The right-angle speed reducer 12 is drivingly connected to the screw stirring assembly 6. The vertical motor 11 is detachably connected to the top frame 102, and a motor cover 107 with an open bottom is also detachably provided on the top frame 102 to protect the vertical motor 11. In this embodiment, the right-angle speed reducer 12 is used to change the driving direction of the vertical motor 11 from vertical to horizontal longitudinal, and the screw stirring assembly 6 rotates along the longitudinal rotating shaft. Therefore, the right-angle speed reducer 12 realizes the driving connection between the vertical motor 11 and the screw stirring assembly 6. Compared with the horizontal transverse or horizontal longitudinal installation of the motor, the vertical motor can reduce the plane size of the concrete spraying machine, enabling it to perform spraying operations in special environments and expanding the application range.

[0049] The electric control box 10 is bolted to the top of the motor cover 107, so the electric control box 10 can also be disassembled and assembled as needed. The electric control box 10 is electrically connected to both the vertical motor 11 and the accelerator motor pump assembly 2, and is used to control the conveyance of concrete and accelerator.

[0050] In this embodiment, the traveling components include a pair of wheels 108 provided at the rear of the chassis 101 and outriggers 109 provided at the front of the chassis 101, which facilitate the operator to pull the concrete spraying machine forward through the handle 32 in the front.

[0051] As Figure 8 shown, when the wet high-strength concrete spraying machine is in use, a spray gun 34 is installed on the material spraying port 31. The rear end of the spray gun 34 is in pipeline connection with the front end of the material spraying port 31. The outer wall of the spray gun 34 is radially symmetrically provided with accelerator ports 35. After the accelerator is mixed with the high-pressure air conveyed by the air compressor, it symmetrically enters the spray gun 34 from the two accelerator ports 35. The high-strength concrete and the accelerator containing high-pressure air are sprayed out from the front end of the spray gun together, and the concrete slurry and the accelerator are evenly mixed and sprayed onto the sprayed surface to form a dense concrete layer. The spray gun 34 can be held manually or placed on a bracket.

[0052] In some preferred examples, the accelerator and the high-pressure air can be mixed through a mixing valve (not shown in the figure). The mixing valve can be installed on one side of the base hopper 4 adjacent to the liquid outlet of the accelerator motor pump assembly 2 horizontally. The mixing valve has two inlets respectively communicating with the outlet of the air compressor and the liquid outlet of the accelerator motor pump assembly 2, and the mixing valve has two outlets respectively communicating with the two accelerator ports 35 on the spray gun.

[0053] The working principle of the present utility model is as follows:

[0054] Before shotcreting construction, disassemble and transport equipment such as the vehicle frame 100, main motor assembly 1, accelerator motor pump assembly 2, heightening hopper 5, and electrical control box 10 to the construction site for assembly: The heightening hopper 5 is installed on the base hopper 4 by inserting pins 7 into the intermediate bushings 51 on the front and rear sides and the corresponding pair of end bushings 41; The accelerator motor pump assembly 2 is installed on the front side of the base hopper 4 through the mounting bracket 8; The main motor assembly 1 is bolted to the rear end of the top frame 102, and the front end of the right-angle speed reducer 12 is drivingly connected to the rear end of the screw mixing assembly 6 in the base hopper 4. Bolt the motor cover 107 to the top of the vertical motor 11, and bolt the electrical control box 10 to the top of the motor cover 107.

[0055] After assembly, pour the prepared concrete slurry onto the heightening hopper 5. Start the air compressor, adjust the air pressure, and start shotcreting construction. The high-strength concrete and the accelerator containing high-pressure air are ejected from the spray gun 34 together, and the concrete slurry and the accelerator are evenly mixed and sprayed onto the sprayed surface to form a dense concrete layer.

[0056] After the wet shotcreting operation is completed, clean the pipeline in the accelerator motor pump assembly 2 with clean water. Finally, disassemble the shotcreting machine and transport it out of the shotcreting site.

Claims

1. A detachable wet high-strength concrete spraying machine, characterized in that: It comprises a vehicle frame (100), a main motor assembly (1), an accelerator motor pump assembly (2), a pump stator and rotor assembly (3), a basic hopper (4), and a heightened hopper (5). The vehicle frame (100) comprises a top frame (102) and a bottom frame (101) which are arranged up and down and connected to form a whole. A walking component is provided at the bottom of the bottom frame (101). The basic hopper (4) is installed in the vehicle frame (100) and the upper end is connected to the top frame (102). A heightening hopper (5) is detachably provided on the basic hopper (4). The pump stator and rotor assembly (3) is installed on the base frame (101) in front of the base hopper (4), and the pump stator and rotor assembly (3) is drivingly connected to a screw stirring assembly (6) arranged at the bottom of the base hopper (4) for outputting concrete; A mounting bracket (8) is provided on the front side of the base hopper (4) above the pump stator and rotor assembly (3), and the quick-setting agent motor pump assembly (2) is detachably mounted on the mounting bracket (8); The main motor assembly (1) is detachably mounted on the top frame (102) behind the basic hopper (4), and the main motor assembly (1) is drivingly connected to a screw stirring assembly (6) arranged in the basic hopper (4).

2. The detachable wet high-strength concrete spraying machine according to claim 1, characterized in that: The basic hopper (4) and the heightened hopper (5) are detachably connected via a connecting assembly, wherein the connecting assembly comprises a pair of end sleeves (41) coaxially spaced apart at the top of the front and rear sides of the basic hopper (4) and an intermediate sleeve (51) correspondingly arranged between each pair of end sleeves (41) at the front and rear sides of the heightened hopper (5), and each pair of end sleeves (41) of the basic hopper (4) and the corresponding intermediate sleeve (51) are pin-connected via a pin shaft (7).

3. The detachable wet high-strength concrete spraying machine according to claim 1, characterized in that: The base frame (101) is provided with a stator outer sleeve (103) in front of the base hopper (4), and the pump stator and rotor assembly (3) is installed in the stator outer sleeve (103).

4. The detachable wet high-strength concrete spraying machine according to claim 3, characterized in that: A through slot (104) is provided at the top of the stator outer sleeve (103) along the axial direction of the pump stator and rotor assembly. The two side edges of the through slot (104) extend upward to form vertical ears (105). The two vertical ears (105) are connected by an adjusting bolt (106).

5. The detachable wet high-strength concrete spraying machine according to claim 1, characterized in that: The mounting bracket (8) comprises a horizontal bottom plate (82) and a supporting rib plate (81) below the horizontal bottom plate (82); an L-shaped mounting plate (83) is also provided on the horizontal bottom plate (82); the L-shaped mounting plate (83) comprises a horizontal portion (83.1) fixedly fitted to the top surface of the horizontal bottom plate (82) and a vertical portion (83.2) connected to the horizontal portion (83.1); the quick-setting agent motor pump assembly (2) is bolted to the vertical portion (83.2) of the L-shaped mounting plate (83).

6. The detachable wet high-strength concrete spraying machine according to claim 1, characterized in that: The main motor assembly (1) comprises a vertical motor (11) with a driving end facing downward and a right-angle reducer (12) drivingly connected to the vertical motor (11); the right-angle reducer (12) is drivingly connected to a screw stirring assembly (6); the vertical motor (11) is detachably connected to a top frame (102); and a motor cover (107) with an open bottom is detachably provided on the top frame (102) for protecting the vertical motor (11).

7. The detachable wet high-strength concrete spraying machine according to claim 6, characterized in that: The detachable wet high-strength concrete spraying machine also includes an electric control box (10), which is bolted to the top of the motor cover (107) and is electrically connected to the vertical motor (11) and the quick-setting agent motor pump assembly (2).

8. The detachable wet high-strength concrete spraying machine according to claim 1, characterized in that: The front and rear inner walls of the upper part of the elevated hopper (5) are both provided with limiting protrusions (42), and a filtering protective net (9) is provided on the limiting protrusions (42).

9. The detachable wet high-strength concrete spraying machine according to claim 1, characterized in that: The walking component comprises a pair of wheels (108) arranged at the rear of the base frame (101), and supporting legs (109) arranged at the front of the base frame (101).

10. The detachable wet high-strength concrete spraying machine according to claim 1, characterized in that: The front end of the pump stator and rotor assembly (3) is provided with a contracted injection port (31), and the top of the injection port (31) is provided with a handle (32) and a pressure gauge (33) reflecting the internal pressure of the injection port (31).

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