Concrete spraying construction device

Abstract

The concrete spraying construction device comprises a machine box, a spraying machine is arranged in the machine box, the spraying machine is connected with a conveying pipe, the conveying pipe is connected with a supporting piece, the conveying pipe movably penetrates through one side of the machine box and is connected with a spraying head, and the middle section of the conveying pipe is provided with a buffering mechanism located between the supporting piece and the spraying head; the buffering mechanism comprises two fixing plates fixedly arranged on the conveying pipe in a sleeving mode, the pipe section, located between the two fixing plates, of the conveying pipe is a telescopic corrugated pipe, a plurality of compression springs are connected between the two fixing plates, and the multiple compression springs are arranged around the axis of the telescopic corrugated pipe in an annular array mode. The spraying device has the advantages that spraying reaction force can be buffered, and a connecting structure between the supporting piece and the conveying pipe is protected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel engineering equipment, in particular to a shotcrete construction device. BACKGROUND

[0002] In tunnel construction, shotcrete is a kind of concrete with the same raw materials as ordinary concrete but special construction technology. Shotcrete is a kind of support form and construction method in which cement, sand and stone are mixed and stirred according to a certain proportion, then sent into a shotcrete machine, and then compressed air is used to compress and send the dry mixed materials to a nozzle, and then water is added to the water ring of the nozzle, and then the shotcrete is sprayed at high speed to the surface of the surrounding rock of the tunnel, thereby playing a supporting role.

[0003] Shotcrete needs to be matched with corresponding construction equipment, and the existing shotcrete construction equipment needs to support the conveying pipe connected between the nozzle and the shotcrete machine to a certain height by a support piece. When the shotcrete is sprayed from the nozzle, or during the spraying process due to unstable pressure, the spraying pressure suddenly increases, which will cause a large fluctuation reaction force of the nozzle to the conveying pipe. The reaction force is further transmitted to the support piece, which will cause the connection structure between the support piece and the conveying pipe to loosen over time, and even be damaged, thereby affecting the normal operation of the equipment. CONTENT OF THE UTILITY MODEL

[0004] The main purpose of the present application is to provide a shotcrete construction device, which aims to solve the technical problem that the reaction force of the nozzle of the existing shotcrete construction equipment easily causes the connection structure between the support piece and the conveying pipe to loosen.

[0005] To achieve the above-mentioned purpose, the present application provides a shotcrete construction device, which comprises a machine box, a shotcrete machine arranged in the machine box, a conveying pipe connected with the shotcrete machine, a support piece connected with the conveying pipe, the conveying pipe movably penetrating one side of the machine box and connected with a nozzle, and a buffer mechanism arranged between the support piece and the nozzle at the middle segment of the conveying pipe. The buffer mechanism comprises two fixed plates fixedly arranged on the conveying pipe, a telescopic bellows arranged between the two fixed plates, and a plurality of compression springs connected between the two fixed plates and arranged in a ring array around the axis of the telescopic bellows.

[0006] Optionally, the support piece comprises a telescopic cylinder arranged at the inner bottom or the inner top of the machine box, the telescopic cylinder is connected with a fixed seat, the fixed seat is fixedly arranged on the conveying pipe, and a vertical strip-shaped slot matched with the conveying pipe is formed in the side wall of the machine box.

[0007] Optionally, the two inner side walls of the vertical strip-shaped slot are provided with guide sliding rails, a guide sliding block is slidably connected between the two guide sliding rails, and the guide sliding block is movably arranged on the conveying pipe.

[0008] Optionally, the delivery pipe includes a flexible pipe connected to the jetting machine, the flexible pipe being connected to a rigid pipe, and the rigid pipe being connected to a support.

[0009] Optionally, multiple lights are provided on the side of the chassis near the nozzle, all of which are located above the nozzle and are arranged sequentially along the width of the chassis.

[0010] Optionally, a return material box with a top opening is provided on the side of the casing near the nozzle. The return material box is located below the nozzle and is used to recover concrete spilled from the nozzle.

[0011] Optionally, the return bin is connected to a recycling mechanism, which includes a recycling pipe extending into the bottom of the return bin. The recycling pipe is connected to a return pump installed on the shotcrete machine, which is used to return concrete to the shotcrete machine through the pipe.

[0012] Optionally, a tray is provided on the side wall of the chassis, an electronic weighing device is provided on the tray, a return material box is provided on the electronic weighing device, the electronic weighing device is electrically connected to a controller provided in the chassis, and the controller is electrically connected to the return material pump.

[0013] Optionally, a walking mechanism is provided at the bottom of the chassis.

[0014] Optionally, the side wall of the chassis is provided with an openable door.

[0015] The beneficial effects that this application can achieve are as follows:

[0016] This application includes a casing, within which a jetting machine is installed. The jetting machine is connected to a delivery pipe, which is connected to a support member. The delivery pipe movably passes through one side of the casing and is connected to a nozzle. A buffer mechanism is provided in the middle section of the delivery pipe, located between the support member and the nozzle. The buffer mechanism includes two fixed plates fixedly sleeved on the delivery pipe. The section of the delivery pipe between the two fixed plates is a telescopic corrugated pipe. Multiple compression springs are connected between the two fixed plates, and the multiple compression springs are arranged in a circular array around the axis of the telescopic corrugated pipe.

[0017] Based on the structure of this application, when the pressure of concrete sprayed from the nozzle suddenly increases, a reaction force is generated on a section of the delivery pipe connected to the nozzle. At this time, the corresponding fixed plate near the nozzle moves towards another fixed plate, while the other fixed plate remains stationary. This compresses the compression spring, and the telescopic corrugated pipe also contracts accordingly, thereby gradually buffering the reaction force without affecting the delivery of concrete. When the spraying pressure stabilizes, the compression spring can reset the corresponding fixed plate, thereby reducing the impact of the reaction force on the support, maintaining the reliability of the connection structure between the support and the delivery pipe, and improving the service life. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the structure of a shotcrete construction device according to an embodiment of this application;

[0020] Figure 2 for Figure 1 A structural schematic diagram of the left view;

[0021] Figure 3 This is a schematic diagram of the external structure of a shotcrete construction device according to an embodiment of this application.

[0022] Figure label:

[0023] 110-Chassis, 111-Vertical trough, 120-Sprayer, 130-Conveying pipe, 131-Soft pipe, 132-Rigid pipe, 1321-Telescopic corrugated pipe, 140-Support component, 141-Telescopic cylinder, 142-Fixed seat, 150-Nozzle, 160-Buffer mechanism, 161-Fixed plate, 162-Compression spring, 170-Guide rail, 180-Guide slider, 190-Lighting lamp, 210-Return box, 220-Recycling mechanism, 221-Recycling pipe, 222-Return pump, 230-Panel, 240-Electronic weighing device, 250-Controller, 260-Walking mechanism, 270-Box door.

[0024] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0027] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0029] Example

[0030] Reference Figures 1-3 This embodiment provides a shotcrete construction device, including a housing 110, a shotcrete machine 120 disposed inside the housing 110, a delivery pipe 130 connected to the shotcrete machine 120, a support member 140 connected to the delivery pipe 130, the delivery pipe 130 movably passing through one side of the housing 110 and connected to a nozzle 150, a buffer mechanism 160 located between the support member 140 and the nozzle 150 in the middle section of the delivery pipe 130; wherein, the buffer mechanism 160 includes two fixed plates 161 fixedly sleeved on the delivery pipe 130, the section of the delivery pipe 130 between the two fixed plates 161 is a telescopic corrugated pipe 1321, and a plurality of compression springs 162 are connected between the two fixed plates 161, the plurality of compression springs 162 being arranged in a ring array around the axis of the telescopic corrugated pipe 1321.

[0031] In this embodiment, when the pressure of concrete sprayed from the nozzle 150 suddenly increases, a reaction force is generated on a section of the delivery pipe 130 connected to the nozzle 150. At this time, the corresponding fixing plate 161 near the nozzle 150 moves towards another fixing plate 161, while the other fixing plate 161 remains stationary. This compresses the compression spring 162, and the telescopic corrugated pipe 1321 also contracts accordingly, thereby gradually buffering the reaction force without affecting the delivery of concrete. When the spraying pressure stabilizes, the compression spring 162 can reset the corresponding fixing plate 161, thereby reducing the impact of the reaction force on the support member 140, maintaining the reliability of the connection structure between the support member 140 and the delivery pipe 130, and improving the service life.

[0032] As an optional implementation, the support member 140 includes a telescopic cylinder 141 disposed at the inner bottom or inner top of the housing 110. The telescopic cylinder 141 is connected to a fixed seat 142, which is fixedly sleeved on the conveying pipe 130. The side wall of the housing 110 is provided with a vertical strip groove 111 that cooperates with the conveying pipe 130.

[0033] In this embodiment, the telescopic cylinder 141 drives the fixed base 142 to move up and down, thereby driving the delivery pipe 130 to move up and down along the vertical strip groove 111, thereby adjusting the height of the nozzle 150 and realizing the adjustment of the concrete spraying height to adapt to more construction scenarios.

[0034] As an optional implementation, both inner walls of the vertical strip groove 111 are provided with guide rails 170, and a guide slider 180 is slidably connected between the two guide rails 170. The guide slider 180 is movably sleeved on the conveying pipe 130.

[0035] In this embodiment, when the conveying pipe 130 moves up and down, it drives the guide slider 180 to move up and down along the guide rail 170, thereby guiding the conveying pipe 130 and making the movement smoother and avoiding jamming.

[0036] As an alternative implementation, the delivery pipe 130 includes a flexible pipe 131 connected to the jetting machine 120, a rigid pipe 132 connected to the flexible pipe 131, and the rigid pipe 132 connected to the support member 140.

[0037] In this embodiment, the telescopic cylinder 141 in the support member 140 can drive the rigid tube 132 to move up and down, while the flexible tube 131 can swing accordingly to accommodate the height change of the rigid tube 132. Here, the rigid tube 132 has two sections, which are connected in the middle by a telescopic corrugated tube 1321, thereby meeting the usage requirements.

[0038] As an optional implementation, a plurality of lighting lamps 190 are provided on the side of the housing 110 near the nozzle 150. All the lighting lamps 190 are located above the nozzle 150 and are arranged sequentially along the width of the housing 110. The arrangement of the plurality of lighting lamps 190 allows for operation in tunnels with relatively low light conditions.

[0039] As an optional implementation, a top-opening return box 210 is provided on the side of the casing 110 near the nozzle 150. The return box 210 is located below the nozzle 150 and is used to collect concrete spilled from the nozzle 150. By providing the return box 210, the waste of spilled concrete is reduced, and material costs are saved.

[0040] As an optional implementation, the return bin 210 is connected to a recycling mechanism 220, which includes a recycling pipe 221 extending into the bottom of the return bin 210. The recycling pipe 221 is connected to a return pump 222 installed on the spraying machine 120. The return pump 222 is used to return concrete to the spraying machine 120 through the pipe.

[0041] In this embodiment, after the return tank 210 recovers a certain amount of concrete, the concrete can be returned from the recovery pipe 221 to the shotcrete machine 120 via the return pump 222, thus allowing for direct recycling of spilled concrete. It should be noted that the return pump 222 can be an existing concrete pump, meeting the usage requirements.

[0042] As an optional implementation, a support plate 230 is provided on the side wall of the chassis 110, an electronic weighing device 240 is provided on the support plate 230, a return material box 210 is provided on the electronic weighing device 240, and the electronic weighing device 240 is electrically connected to a controller 250 provided in the chassis 110, and the controller 250 is electrically connected to the return material pump 222.

[0043] In this embodiment, the weight of the concrete inside the return bin 210 can be monitored in real time by the electronic weighing device 240. When the preset weight is reached, a signal is sent to the controller 250, thereby controlling the return pump 222 to start automatically for concrete recycling. This eliminates the need for manual management and achieves a high degree of automation. It should be noted that the controller 250 can be an existing S7-200 PLC controller, which meets the usage requirements.

[0044] As an optional implementation, a walking mechanism 260 is provided at the bottom of the chassis 110, allowing the entire device to move to adapt to tunnel construction operations. The walking mechanism 260 can adopt an existing tracked or wheeled structure, configured with a corresponding drive system, to achieve automatic movement.

[0045] As an optional implementation, the side wall of the chassis 110 is provided with an openable door 270, which allows for easy viewing and maintenance of internal components. The door 270 can be detachably connected to the side wall of the chassis 110 using multiple screws, or it can be a hinged structure.

[0046] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A shotcrete construction device, characterized in that, The utility model provides a spraying machine, which comprises a cabinet, a spraying machine arranged in the cabinet, a conveying pipe connected to the spraying machine, a support connected to the conveying pipe, the conveying pipe movably penetrating one side of the cabinet and connected to a spray head, and a buffer mechanism arranged in a middle section of the conveying pipe between the support and the spray head. The buffer mechanism comprises two fixed plates fixed on the conveying pipe, a telescopic bellows arranged between the two fixed plates, and a plurality of compression springs arranged in a ring array around an axis of the telescopic bellows.

2. A shotcrete placement device as claimed in claim 1, wherein, The support comprises a telescopic cylinder arranged at a bottom or top of the cabinet, a fixed seat connected to the telescopic cylinder, the fixed seat being fixed on the conveying pipe, and a vertical strip-shaped slot formed in a side wall of the cabinet and matched with the conveying pipe.

3. A shotcrete construction apparatus as claimed in claim 2, wherein Two inner side walls of the vertical strip-shaped slot are provided with guide rails, and a guide block is slidably connected between the two guide rails and movably arranged on the conveying pipe.

4. A shotcrete construction apparatus as claimed in claim 2 or 3, characterised in that, The conveying pipe comprises a soft pipe connected to the spraying machine, a hard pipe connected to the soft pipe, and the hard pipe being connected to the support.

5. A shotcrete placement device as defined in claim 1, wherein, A plurality of illuminating lamps are arranged on one side of the cabinet close to the spray head, the plurality of illuminating lamps are arranged above the spray head, and the plurality of illuminating lamps are arranged in sequence along a width direction of the cabinet.

6. A shotcrete placement device as defined in claim 1, wherein, A material return box with an open top is arranged on one side of the cabinet close to the spray head, the material return box is arranged below the spray head, and the material return box is used for recycling concrete leaked from the spray head.

7. A shotcrete construction apparatus as claimed in claim 6, characterised in that, The material return box is connected to a recycling mechanism, the recycling mechanism comprises a recycling pipe extending into a bottom of the material return box, the recycling pipe is connected to a material return pump arranged on the spraying machine, and the material return pump is used for recycling the concrete into the spraying machine through a pipeline.

8. A shotcrete construction apparatus as claimed in claim 6, wherein A supporting plate is arranged on a side wall of the cabinet, an electronic scale is arranged on the supporting plate, the material return box is arranged on the electronic scale, the electronic scale is electrically connected to a controller arranged in the cabinet, and the controller is electrically connected to the material return pump.

9. A shotcrete placement device as defined in claim 1, wherein, A traveling mechanism is arranged at a bottom of the cabinet.

10. A shotcrete construction apparatus as claimed in claim 1, characterized in that An openable cabinet door is arranged on a side wall of the cabinet.

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