A concrete spraying rebound working device for wet spraying machine

Abstract

The present invention provides a concrete spraying rebound working device for a wet spraying machine, and relates to the technical field of engineering machinery. The concrete spraying rebound working device for a wet spraying machine comprises a main arm (2), a forearm (3), a template support plate (5) and a concrete pipe (6). One end of the main arm (2) is provided with a forearm (3) through a mounting seat (9), and the other end is provided with a forearm telescopic oil cylinder (19); a rotary motor (10) is provided inside the forearm (3), and a mounting seat (4) is provided at the outer end; the template support plate (5) is connected to the mounting seat (4) through left and right leveling oil cylinders (11) and front and rear adjustment screw rods (12); a pumping mechanism mounting seat (17) is also provided on the mounting seat (4); the concrete pipe (6) is installed on the pumping mechanism mounting seat (17) through a pipe mounting seat (7). The present invention solves the technical problem that the rebound rate of the existing wet spraying machine is too high when spraying concrete.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, and in particular to a concrete spraying rebound working device for a wet spraying machine. Background Art

[0002] Wet spraying equipment plays a key role in tunnel construction, but the rebound rate of existing wet spraying machines when spraying concrete is about 20%, and there is no rebound device. Therefore, designing a wet spraying machine with a rebound working device system can effectively control the rebound rate to about 1%, so the wet spraying machine with a rebound working device system has great practical significance for the development of engineering machinery.

[0003] Patent application CN201110319874.X discloses a brushing device for a concrete spraying machine, comprising a first rotary drive member and a rotary member connected to the output end of the first rotary drive member on one side, a plurality of eccentric mounting positions are arranged on the end face of the other side of the rotary member, a connecting shaft can be selectively mounted on an eccentric mounting position, and the angles between the axis of the connecting shaft and the rotation axis of the rotary member at different eccentric mounting positions are different. In addition, a nozzle assembly of a concrete spraying machine having the brushing device is also disclosed. The brushing device and the nozzle assembly having the brushing device can spray concrete by adjusting to a suitable brushing angle according to different spraying surfaces, thereby reducing the rebound rate of concrete and reducing the collapse of unsolidified concrete, so as to improve the spraying efficiency of concrete.

[0004] In patent application CN201611250747.8, a new type of TBM mixer is disclosed, including a concrete input pipe, a four-way pipe, a brush motor, a longitudinal swing cylinder, a mixer, a telescopic cylinder, and a controller; a connecting plate is provided at one end of the telescopic cylinder, and the four-way pipe is fixed on the upper part of the connecting plate. The two interfaces on the upper part of the four-way pipe are respectively provided with an air input pipe and an accelerator input pipe. A measuring sensor is provided in the air input pipe, and the measuring sensor is connected to the controller. The two interfaces at the lower part of the four-way pipe are respectively provided with an elbow, and the other end of the elbow is connected to the mixer. The upper part of the mixer is provided with a nozzle, and the lower part of the mixer is provided with a concrete input pipe, which is connected to the nozzle and the elbow through the mixer. The patent can intelligently adjust the spacing and angle between the nozzle and the injection surface in real time according to the air volume, ensuring the appropriate spacing with the lowest rebound rate and the best angle of the nozzle always perpendicular to the injection surface, effectively reducing the rebound rate, reducing the loss of concrete, and saving energy and environmental protection. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a concrete spraying rebound working device for a wet spraying machine. By setting up a main arm, a small arm, a plurality of rotary motors, a concrete pipe, a pre-spraying pipe for an accelerator and a formwork support plate and other structures, the present invention has the characteristics of reducing the rebound rate, shaping the concrete spraying surface, reducing the labor intensity of the operation, reducing the dependence on operating experience, improving the construction quality and the construction environment, reducing the construction cost, and having a high degree of intelligence, and solves the technical problem of the existing wet spraying machine having an excessively high rebound rate when spraying concrete.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A concrete spraying rebound working device for a wet spraying machine comprises a rotary motor, a main arm, a small arm, a template support plate and a concrete pipe, wherein:

[0008] The main arm is a square tube structure, one end of which is provided with a small arm through a mounting seat, and the other end is provided with a small arm telescopic cylinder;

[0009] A rotary motor is also provided on the outside of one end of the main arm close to the telescopic cylinder of the small arm;

[0010] The end of the small arm away from the main arm is also provided with a second mounting seat;

[0011] The forearm is also provided with a second rotary motor;

[0012] The template support plate is connected to the second mounting seat through left and right leveling cylinders and front and rear adjustment screw rods;

[0013] The second mounting seat is also provided with a pumping mechanism mounting seat; the pumping mechanism mounting seat is also provided with a rotary motor 3;

[0014] The concrete pipe is installed on the pumping mechanism mounting seat through the pipe mounting seat;

[0015] The head of the concrete pipe is provided with a nozzle; the diameter of the nozzle is smaller than the diameter of the concrete pipe, and the nozzle is located above the formwork support plate.

[0016] Optionally or preferably, a pipe limiting ring is further provided on the outside of one end of the main arm close to the arm telescopic cylinder, and the tail of the concrete pipe passes through the pipe limiting ring and is connected to the concrete pumping device.

[0017] Optionally or preferably, a quick-setting agent pre-spraying pipeline is provided above the concrete pipeline;

[0018] The quick-setting agent pre-spraying pipeline is installed and fixed on a side of the concrete pipeline away from the pumping mechanism mounting seat;

[0019] The quick-setting agent pre-spraying pipeline is arranged in parallel with the concrete pipeline.

[0020] Optionally or preferably, a section of the concrete pipe close to the pipe mounting seat is wrapped with a protective sheath.

[0021] Optionally or preferably, the pipeline mounting seat and the pumping mechanism mounting seat are both provided with a plurality of mounting holes;

[0022] The pipeline mounting seat and the pumping mechanism mounting seat are connected by bolts.

[0023] Optionally or preferably, a plastic film is provided on the outer side of the template support plate, and a film winding drum is provided on the top of the template support plate;

[0024] An automatic film cutting mechanism is provided at the bottom of the template support plate;

[0025] Left and right limit sensors are provided on both sides of the automatic film cutting mechanism.

[0026] Based on the above technical solution, the following technical effects can be produced:

[0027] The invention provides a concrete spraying rebound working device for a wet spraying machine, which is suitable for:

[0028] (1) The present invention can effectively reduce the rebound rate of the wet spraying machine when spraying concrete, reducing the rebound rate from 20% to about 1%;

[0029] (2) The formwork support plate and plastic film of the present invention can shape the concrete spraying surface, improve construction quality, save construction time and reduce construction costs;

[0030] (3) The present invention has a simple structure, low manufacturing cost and high intelligence;

[0031] (4) The present invention can greatly reduce the labor intensity of shotcrete operations, reduce the dependence of construction operations on operating experience, and improve the construction environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 It is a structural schematic diagram (stereoscopic diagram) of the present invention;

[0034] Figure 2 It is a structural schematic diagram (front view) of the present invention;

[0035] Figure 3 It is a schematic diagram of the structure of the present invention (top view);

[0036] Figure 4 It is a schematic diagram of the construction site of the tunnel primary support of the present invention (front view);

[0037] Reference numerals in the figures:

[0038] 1-slewing motor one, 2-main arm, 3-small arm, 4-mounting seat two, 5-formwork support plate, 6-concrete pipe, 7-pipe mounting seat, 8-accelerator pre-spray pipe, 9-mounting seat one, 10-slewing motor two, 11-left and right leveling cylinders, 12-front and rear adjustment screw rods, 13-accelerator mixing tube, 14-plastic film, 15-nozzle, 16-automatic film cutting mechanism, 17-pumping mechanism mounting seat, 18-slewing motor three, 19-small arm telescopic cylinder, 20-left and right limit sensors. DETAILED DESCRIPTION

[0039] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1:

[0042] like Figure 1-Figure 4 As shown:

[0043] This embodiment provides a concrete spraying rebound working device for a wet spraying machine, comprising a rotary motor 1, a main arm 2, a small arm 3, a template support plate 5 and a concrete pipe 6, wherein:

[0044] The main arm 2 is a square tube structure, one end of which is provided with a small arm 3 through a mounting seat 9, and the other end is provided with a small arm telescopic cylinder 19;

[0045] The main arm 2 is also provided with a rotary motor 1 on the outside of one end close to the arm telescopic cylinder 19;

[0046] The end of the small arm 3 away from the main arm 2 is also provided with a mounting seat 2 4;

[0047] The small arm 3 is also provided with a rotary motor 10;

[0048] The template support plate 5 is connected to the mounting seat 2 4 through the left and right leveling cylinders 11 and the front and rear adjustment screw rods 12;

[0049] The mounting seat 2 4 is also provided with a pumping mechanism mounting seat 17;

[0050] The pumping mechanism mounting seat 17 is also provided with a rotary motor 3 18;

[0051] The concrete pipe 6 is mounted on the pumping mechanism mounting seat 17 through the pipe mounting seat 7;

[0052] The head of the concrete pipe 6 is provided with a nozzle 15;

[0053] The diameter of the nozzle 15 is smaller than the diameter of the concrete pipe 6 , and the nozzle 15 is located above the formwork support plate 5 .

[0054] In this embodiment, a pipeline limiting ring is further provided on the outside of one end of the main arm 2 close to the arm telescopic cylinder 19, and the tail of the concrete pipe 6 passes through the pipeline limiting ring and is connected to the concrete pumping device.

[0055] In this embodiment, a quick-setting agent pre-spraying pipe 8 is provided above the concrete pipe 6, which can spray the quick-setting agent to the tunnel rock surface and the steel arch frame, so that the concrete can be better adhered to the tunnel rock surface and the steel arch frame, thereby reducing the rebound rate.

[0056] The quick-setting agent pre-spraying pipe 8 is installed and fixed on a side of the concrete pipe 6 away from the pumping mechanism mounting seat 17;

[0057] The quick-setting agent pre-spraying pipeline 8 is arranged in parallel with the concrete pipeline 6 .

[0058] In this embodiment, a section of the concrete pipe 6 close to the pipe mounting seat 7 is wrapped with a protective sheath.

[0059] In this embodiment, the pipeline mounting seat 7 and the pumping mechanism mounting seat 17 are both provided with a plurality of mounting holes;

[0060] The pipeline mounting seat 7 and the pumping mechanism mounting seat 17 are connected by bolts.

[0061] In this embodiment, a plastic film 14 is provided on the outer side of the formwork support plate 5, and a film winding drum is provided on the top of the formwork support plate 5. The plastic film 14 can prevent the concrete from adhering to the formwork support plate 5 and can also shape the sprayed concrete.

[0062] An automatic film cutting mechanism 16 is provided at the bottom of the template support plate 5;

[0063] The automatic film cutting mechanism 16 is provided with left and right limit sensors 20 on both sides.

[0064] This embodiment has the following advantages:

[0065] (1) This embodiment can effectively reduce the rebound rate of the wet spraying machine when spraying concrete, reducing the rebound rate from 20% to about 1%;

[0066] (2) The formwork support plate 5 and the plastic film 14 of this embodiment can shape the concrete spraying surface, improve the construction quality, save construction time and reduce construction costs;

[0067] (3) This embodiment has a simple structure, low manufacturing cost and high intelligence;

[0068] (4) This embodiment can greatly reduce the labor intensity of shotcrete operations, reduce the dependence of construction operations on operating experience, and improve the construction environment.

[0069] Embodiment 2:

[0070] The concrete spraying rebound working device for a wet spraying machine provided by the present invention is different from that in Embodiment 1 in that:

[0071] In this embodiment, the rotary motor 1 is a 360° rotary motor, which is used to control the rotation angle of the main arm 2 on the wet spraying trolley.

[0072] In this embodiment, the second rotary motor 10 is a 240° rotary motor, which is used to control the rotation angle of the second mounting seat 4.

[0073] In this embodiment, the rotary motor 3 18 is a 180° rotary motor, which is used to control the rotation angle of the pumping mechanism mounting seat 17 .

[0074] In this embodiment, the mounting seat 9 is a flange structure, which is used to connect the forearm 3 and the forearm telescopic cylinder 19.

[0075] In this embodiment, the number of the left and right leveling cylinders 11 is two, which are respectively installed and fixed on the left and right sides of the mounting seat 2 4;

[0076] In this embodiment, there is one front and rear adjustment screw rod 12 , which is installed and fixed above the left and right leveling cylinders 11 .

[0077] This embodiment has the following advantages:

[0078] (1) This embodiment can effectively reduce the rebound rate of the wet spraying machine when spraying concrete, reducing the rebound rate from 20% to about 1%;

[0079] (2) The formwork support plate 5 and the plastic film 14 of this embodiment can shape the concrete spraying surface, improve the construction quality, save construction time and reduce construction costs;

[0080] (3) This embodiment has a simple structure, low manufacturing cost and high intelligence;

[0081] (4) This embodiment can greatly reduce the labor intensity of shotcrete operations, reduce the dependence of construction operations on operating experience, and improve the construction environment.

[0082] The structure, function and connection form disclosed in this article can be realized in other ways. For example, the above-described embodiments are only schematic, for example, the main arm 2, the small arm 3 and the template support plate 5 can be installed in other ways, for example, multiple components can be combined or integrated into another component; in addition, each functional component in each embodiment of this article can be integrated into one functional component, or each functional component can exist physically separately, or two or more functional components can be integrated into one functional component.

[0083] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A concrete spraying rebound working device for a wet spraying machine, characterized in that: It comprises a rotary motor (1), a main arm (2), a small arm (3), a formwork support plate (5) and a concrete pipe (6), wherein: The main arm (2) is a square tube structure, one end of which is provided with a small arm (3) via a mounting seat (9), and the other end of which is provided with a small arm telescopic cylinder (19); A rotary motor (1) is also provided on the outside of one end of the main arm (2) close to the arm telescopic cylinder (19); A second mounting seat (4) is also provided at one end of the small arm (3) away from the main arm (2); The small arm (3) is also provided with a second rotary motor (10); The template support plate (5) is connected to the second mounting seat (4) via left and right leveling cylinders (11) and front and rear adjustment screw rods (12); A pumping mechanism mounting seat (17) is also provided on the second mounting seat (4); a rotary motor (18) is also provided in the pumping mechanism mounting seat (17); The concrete pipe (6) is mounted on the pumping mechanism mounting seat (17) via the pipe mounting seat (7); The head of the concrete pipe (6) is provided with a nozzle (15); the diameter of the nozzle (15) is smaller than the diameter of the concrete pipe (6), and the nozzle (15) is located above the formwork support plate (5); An accelerator pre-spraying pipe (8) is provided above the concrete pipe (6); the accelerator pre-spraying pipe (8) is installed and fixed on a side of the concrete pipe (6) away from the pumping mechanism mounting seat (17); the accelerator pre-spraying pipe (8) is arranged in parallel with the concrete pipe (6); A plastic film (14) is provided on the outer side of the template support plate (5), and a film reel is provided on the top of the template support plate (5); an automatic film cutting mechanism (16) is provided on the bottom of the template support plate (5); left and right limit sensors (20) are provided on both sides of the automatic film cutting mechanism (16).

2. The concrete spraying rebound working device for a wet spraying machine according to claim 1, characterized in that: A pipeline limiting ring is also provided on the outside of one end of the main arm (2) close to the arm telescopic oil cylinder (19), and the tail of the concrete pipe (6) passes through the pipeline limiting ring and is connected to the concrete pumping device.

3. The concrete spraying rebound working device for a wet spraying machine according to claim 1, characterized in that: A section of the concrete pipe (6) close to the pipe mounting seat (7) is wrapped with a protective sleeve.

4. The concrete spraying rebound working device for a wet spraying machine according to claim 1, characterized in that: The pipeline mounting seat (7) and the pumping mechanism mounting seat (17) are both provided with a plurality of mounting holes; the pipeline mounting seat (7) and the pumping mechanism mounting seat (17) are connected via bolts.

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