A concrete spraying device for tunnel construction

Abstract

The present invention is applicable to the technical field of tunnel construction, and provides a concrete spraying device for tunnel construction, including a shell, and also including: a stirring mechanism, which is rotatably connected in the shell and is used to homogenize materials through multiple stirring; a circulation mechanism, which is connected and arranged on the shell, and is transmission-connected with the stirring mechanism, and is used to promote the intersection of materials at different levels under the drive of the stirring mechanism; the circulation mechanism includes a material introduction component and a material guide component, the material introduction component and the material guide component are connected through a connecting pipe, the stirring mechanism and the material introduction component and the material guide component are all transmission-connected, and the stirring mechanism drives the material introduction component and the material guide component to operate alternately. In the present invention, the stirring mechanism can homogenize the material when stirring and rotating, and at the same time pull the circulation mechanism, and the material introduction component and the material guide component in the circulation mechanism can be pulled and moved, so that the stirring mechanism, the material introduction component and the material guide component can be used in a continuous cycle to form an efficient homogenization effect of the material in the shell.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a concrete spraying device for tunnel construction. Background Art

[0002] With the development of today's society, all regions are vigorously developing infrastructure to support economic expansion. In road construction and rail transit construction, tunnel construction is a very important component in certain regional conditions.

[0003] In the prior art, when concrete is sprayed in tunnel construction, a high degree of concrete homogeneity is required, otherwise the tunnel construction effect is poor during spraying and the device is prone to malfunction; conventional equipment requires a long period of mixing and processing for homogenization. During the processing of these devices, materials at different levels need to be stirred for a long time before they can be fully integrated, which will obviously prolong the construction period for tunnel construction and reduce efficiency. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a concrete spraying device for tunnel construction, aiming to solve the technical problems existing in the prior art.

[0005] The embodiment of the present invention is implemented as follows: a concrete spraying device for tunnel construction, comprising a housing, and further comprising:

[0006] A stirring mechanism, rotatably connected in the housing, for homogenizing the material through multiple stirring;

[0007] The circulation mechanism is connected to the outer shell and is in driving connection with the stirring mechanism, and is used to promote the convergence of materials at different levels under the drive of the stirring mechanism;

[0008] The circulation mechanism includes a material introduction component and a material guiding component, the material introduction component and the material guiding component are connected through a connecting pipe, the stirring mechanism and the material introduction component and the material guiding component are all transmission connected, and the stirring mechanism drives the material introduction component and the material guiding component to alternately inhale and discharge materials, the material guiding component can inhale materials from one layer in the shell and introduce them into the connecting pipe, and the material introduction component can inhale materials from the connecting pipe and discharge them from another layer in the shell.

[0009] A further technical solution is that the stirring mechanism includes a transmission shaft, which is rotatably connected to the outer shell through a bracket, and the end of the transmission shaft is transmission-connected through a rotating traction member used for stirring and a material introduction component and a material guide component, and the transmission connection on the rotating traction member is provided with a driving component for driving the rotating traction member and the transmission shaft to rotate.

[0010] A further technical solution is that the rotating traction member includes a first cross bar, both ends of which are rotationally connected to the second cross bar through fixed connecting rods, a group of second cross bars are connected to the transmission shaft away from the end of the fixed connecting rod, and the fixed connecting rod is connected to the transmission shaft through a transmission assembly, a material introduction assembly and a material guide assembly.

[0011] According to a further technical solution, the transmission assembly includes a bearing sleeve rotatably connected to the periphery of the fixed connecting rod and a traction rod fixedly connected to the outside of the bearing sleeve, and the end of the traction rod away from the bearing sleeve is transmission-connected to the material introduction assembly and the material guide assembly through a hinge.

[0012] A further technical solution is that the material introducing assembly and the material guiding assembly are respectively arranged in two groups on both sides of the shell, the material introducing assembly on one side and the material guiding assembly on the other side are arranged opposite to each other, and the transmission assemblies connected to the fixed connecting rods at both ends of the first cross bar of the same group are respectively transmission connected to the material introducing assembly and material guiding assembly opposite to the two sides.

[0013] According to a further technical solution, the material guide assembly includes a first chamber shell fixedly connected to the outer shell, a first piston assembly is movably arranged in the first chamber shell, the first piston assembly is transmission-connected to a rotating traction member, one end of the first chamber shell is connected to a connecting pipe via a feed joint, and the other end of the first chamber shell is connected to the outer shell via a first material guide hole.

[0014] A further technical solution is that the first piston assembly includes a first piston plate slidably connected in the first chamber shell, a second material guide hole is penetrated through the first piston plate, a first rotating baffle is rotatably connected to the side of the second material guide hole opposite to the first material guide hole, a first piston rod is connected to the side of the first piston plate opposite to the first material guide hole, and the first piston rod is connected to the rotating traction member.

[0015] A further technical solution is that the material introducing assembly includes a second chamber shell fixedly connected to the outer shell, a second piston assembly is movably arranged in the second chamber shell, the second piston assembly is transmission-connected to the rotating traction member, one end of the second chamber shell is connected to the connecting pipe through a discharge joint, and the other end of the second chamber shell is connected to the outer shell through a third material introducing hole.

[0016] A further technical solution is that the second piston assembly includes a second piston plate slidably connected in the second chamber shell, a fourth material guide hole is penetrated by the second piston plate, a second rotating baffle is rotatably connected to the side of the fourth material guide hole opposite to the discharge joint, a second piston rod is connected to the side of the second piston plate opposite to the third material guide hole, and the second piston rod is connected to the rotating traction member.

[0017] According to a further technical solution, a base is fixedly connected to one end of the outer shell, and the base is rotatably connected to a rotating traction member at one end of the transmission shaft. An upper cover is installed at the other end of the outer shell, and a driving assembly is installed on the upper cover, and the driving assembly is transmission-connected to the rotating traction member at the other end of the transmission shaft.

[0018] According to a further technical solution, the base includes a guide block and a shaft rod, wherein the guide block is fixedly connected to the bottom of the housing, the guide block is rotatably connected to a shaft rod, and the shaft rod is rotatably connected to the rotating traction member.

[0019] An embodiment of the present invention provides a concrete spraying device for tunnel construction, in which a stirring mechanism can homogenize materials when stirring and rotating, and at the same time pull a circulation mechanism, and a material introduction component and a material guide component in the circulation mechanism can be pulled to move, so that the stirring mechanism, the material introduction component and the material guide component can be used in a continuous cycle to form a highly efficient homogenization effect of the material in the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a concrete spraying device for tunnel construction provided by an embodiment of the present invention;

[0021] Figure 2 A schematic structural diagram of a material guide assembly in a concrete spraying device for tunnel construction provided by an embodiment of the present invention;

[0022] Figure 3 A schematic structural diagram of a material introduction assembly in a concrete spraying device for tunnel construction provided by an embodiment of the present invention;

[0023] Figure 4 A schematic structural diagram of a base in a concrete spraying device for tunnel construction provided by an embodiment of the present invention;

[0024] Figure 5 A schematic structural diagram of a rotating traction member in a concrete spraying device for tunnel construction provided by an embodiment of the present invention.

[0025] In the figure: 1-housing, 10-discharge pipe, 2-upper cover, 21-feed pipe, 3-motor, 4-transmission shaft, 41-bracket, 5-rotating traction member, 51-first cross bar, 52-fixed connecting rod, 53-second cross bar, 54-bearing sleeve, 55-traction rod, 56-hinge, 6-base, 61-guide block, 62-bearing sleeve, 7-material guide assembly, 71-first cavity shell, 72-feed connector, 73-first material guide hole, 74-first piston plate, 75-first piston rod, 76-second material guide hole, 77-first rotating baffle, 8-material guide assembly, 81-second cavity shell, 82-discharge connector, 83-third material guide hole, 84-second piston plate, 85-second piston rod, 86-fourth material guide hole, 87-second rotating baffle, 9-connecting pipe. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0028] like Figure 1 As shown, a concrete spraying device for tunnel construction provided by an embodiment of the present invention includes a housing 1 and further includes:

[0029] A stirring mechanism, rotatably connected in the housing 1, for homogenizing the material through multiple stirring;

[0030] The circulation mechanism is connected to the housing 1 and is in driving connection with the stirring mechanism, and is used to promote the convergence of materials at different levels under the drive of the stirring mechanism;

[0031] The circulation mechanism includes a material introduction component 8 and a material guiding component 7, and the material introduction component 8 and the material guiding component 7 are connected through a connecting pipe 9. The stirring mechanism and the material introduction component 8 and the material guiding component 7 are all transmission connected, and the stirring mechanism drives the material introduction component 8 and the material guiding component 7 to alternately inhale and discharge materials. The material guiding component can inhale materials from one layer in the shell and introduce them into the connecting pipe, and the material introduction component can inhale materials from the connecting pipe and discharge them from another layer in the shell.

[0032] In the embodiment of the present invention, preferably, the stirring mechanism can homogenize the material when stirring and rotating, and at the same time pull the circulation mechanism, and the material introduction component 8 and the material guide component 7 in the circulation mechanism can be pulled to move, so that the stirring mechanism, the material introduction component 8 and the material guide component 7 can be used in a continuous cycle to form an efficient homogenization effect of the material in the outer shell 1.

[0033] like Figure 1 As shown, as a preferred embodiment of the present invention, the stirring mechanism includes a transmission shaft 4, and the transmission shaft 4 is rotatably connected in the outer shell 1 through a bracket 41, and the end of the transmission shaft 4 is transmission-connected to the material introduction component 8 and the material guide component 7 through a rotating traction member 5.

[0034] In the embodiment of the present invention, preferably, the stirring mechanism can adopt an impeller structure or an Archimedean spiral blade structure, the bracket 41 is symmetrically arranged at both ends of the outer periphery of the transmission shaft 4, the bracket 41 can adopt a cross bracket, the edge of the bracket 41 is connected to the inner wall of the outer shell 1 by welding or rivets, and the center position of the bracket 41 is rotatably connected to the transmission shaft 4; multiple groups of stirring blades can also be fixedly connected to the outer periphery of the transmission shaft 4 in the stirring mechanism; during the rotation of the transmission shaft 4, the material introduction component 8 and the material guide component 7 are driven to move alternately by rotating the traction member 5, thereby forming a convergence of materials at different height levels in the outer shell 1, thereby improving the material homogenization effect.

[0035] like Figure 5 As shown, as a preferred embodiment of the present invention, the rotating traction member 5 includes a first cross bar 51, and both ends of the first cross bar 51 are rotationally connected to the second cross bar 53 through fixed connecting rods 52 respectively, a group of second cross bars 53 are connected to the transmission shaft 4 away from the end of the fixed connecting rod 52, and the fixed connecting rod 52 is connected to the transmission shaft 4 through the transmission assembly and the material guide assembly 8 and the material guide assembly 7.

[0036] In the embodiment of the present invention, preferably, the rotating traction member can be a "U"-shaped member or a cam structure, the fixed connecting rods 52 at both ends of the first crossbar 51 are respectively rotatably connected to the two sides of the first crossbar 51, the length of the second crossbar 53 is half the length of the first crossbar 51, one end of the transmission assembly is rotatably connected to the periphery of the fixed connecting rod 52, and the other end is transmission-connected to the material introduction assembly 8 and the material guide assembly 7, and the transmission assemblies located at both ends of the transmission shaft 4 are respectively transmission-connected to the material introduction assembly 8 and the material guide assembly 7 in the same group of circulation mechanisms. When the transmission shaft 4 drives the rotating traction member 5 to rotate, the transmission assembly is driven, and at this time, the transmission assemblies at both ends of the transmission shaft 4 can drive the material introduction assembly 8 and the material guide assembly 7 in the same group of circulation mechanisms to operate alternately, thereby finally realizing the intersection of materials at different levels.

[0037] like Figure 5 As shown, as a preferred embodiment of the present invention, the transmission assembly includes a bearing sleeve 54 rotatably connected to the periphery of the fixed connecting rod 52 and a traction rod 55 fixedly connected to the outside of the bearing sleeve 54, and the end of the traction rod 55 away from the bearing sleeve 54 is transmission-connected to the material introduction assembly 8 and the material guide assembly 7 through a hinge 56.

[0038] In the embodiment of the present invention, preferably, the transmission shaft 4 and the second cross bar 53 rotate synchronously, and the traction rod 55 can be connected to the material introduction component 8 and the material guide component 7 through the hinge 56, thereby forming an intermittent circulating material.

[0039] like Figure 1 and 5 As shown, as a preferred embodiment of the present invention, the material guiding assembly 8 and the material guiding assembly 7 are respectively arranged in two groups on both sides of the outer shell 1, and the material guiding assembly 8 on one side and the material guiding assembly 7 on the other side are arranged opposite to each other, and the transmission assemblies connected to the fixed connecting rods 52 at both ends of the first cross bar 51 of the same group are respectively transmission connected to the material guiding assemblies 8 and material guiding assemblies 7 opposite to each other on both sides.

[0040] In the embodiment of the present invention, preferably, the material introduction assembly 8 and the material guiding assembly 7 on both sides of the shell 1 can be located at different heights, so that the circulation mechanisms on both sides can form an alternating operation, which can further improve the material circulation effect.

[0041] like Figure 2 As shown, as a preferred embodiment of the present invention, the material guiding assembly 7 includes a first chamber shell 71 fixedly connected to the outer shell 1, a first piston assembly is movably arranged in the first chamber shell 71, the first piston assembly is transmission-connected to the rotating traction member 5, one end of the first chamber shell 71 is connected to the connecting pipe 9 through the feed connector 72, and the other end of the first chamber shell 71 is connected to the outer shell 1 through the first material guiding hole 73.

[0042] In the embodiment of the present invention, preferably, the material guide component 7 can also adopt a pump group, the switch of the pump group is linked to the rotating traction member 5, and the opening of the pump group is controlled by the rotating traction member 5. A one-way valve is provided in the feed joint 72, which is connected from the connecting pipe 9 to the first chamber shell 71. The one-way valve can be a one-way rotating baffle. The first piston assembly is rotatably connected to the traction rod 55 through the hinge 56, and the traction rod 55 pulls the first piston assembly to move through the hinge 56, so that the material is drawn in and then ejected from the first material guide hole 73, thereby realizing the homogeneous intersection of the materials.

[0043] like Figure 2 As shown, as a preferred embodiment of the present invention, the first piston assembly includes a first piston plate 74 slidably connected in the first chamber shell 71, a second material guide hole 76 is penetrated by the first piston plate 74, a first rotating baffle 77 is rotatably connected to the side of the second material guide hole 76 opposite to the first material guide hole 73, a first piston rod 75 is connected to the side of the first piston plate 74 opposite to the first material guide hole 73, and the first piston rod 75 is connected to the rotating traction member 5.

[0044] In the embodiment of the present invention, preferably, the first piston assembly can be a piston, and a through hole is provided on the piston, and a one-way valve is provided in the through hole, so that the effect of one-way conveying can be achieved when the piston moves. The first piston rod 75 slides through the first chamber shell 71, and multiple groups of second material guide holes 76 are evenly arranged on the first piston plate 74. The first rotating baffle plate 77 is rotatably connected to the first piston plate 74 through a torsion spring, and is movably fitted on the edge of the second material guide hole 76. In this way, the traction rod 55 pulls the first piston rod 75 to move through the hinge 56, and the first piston rod 75 drives the first piston plate 74 to move in the first chamber shell 71, so that when the first piston plate 74 approaches the first material guide hole 73, the material can be drawn in through the feed connector 72, and when the first piston plate 74 approaches the side of the feed connector 72, the material passes through the second material guide hole 76, and when the first piston plate 74 approaches the first material guide hole 73 again, the material in the first chamber shell 71 is ejected.

[0045] like Figure 3 As shown, as a preferred embodiment of the present invention, the material guiding assembly 8 includes a second chamber shell 81 fixedly connected to the outer shell 1, a second piston assembly is movably arranged in the second chamber shell 81, the second piston assembly is transmission-connected to the rotating traction member 5, one end of the second chamber shell 81 is connected to the connecting pipe 9 through a discharge joint 82, and the other end of the second chamber shell 81 is connected to the outer shell 1 through a third material guiding hole 83.

[0046] In the embodiment of the present invention, preferably, the material introduction component 8 can also adopt a pump group, the switch of the pump group is linked with the rotating traction member 5, and the opening of the pump group is controlled by the rotating traction member 5. A one-way valve is provided in the discharge joint 82, which is connected from the second chamber shell 81 to the connecting pipe 9. The one-way valve can be a one-way rotating baffle. The second piston assembly is rotatably connected to the traction rod 55 through the hinge 56. The traction rod 55 pulls the second piston assembly to move through the hinge 56, so that the material is drawn from the outer shell 1 through the third material guide hole 83 and injected into the connecting pipe 9, thereby realizing the homogeneous intersection of the materials.

[0047] like Figure 3 As shown, as a preferred embodiment of the present invention, the second piston assembly includes a second piston plate 84 slidably connected in the second chamber shell 81, a fourth material guide hole 86 is penetrated by the second piston plate 84, a second rotating baffle 87 is rotatably connected to the side of the fourth material guide hole 86 opposite to the discharge joint 82, a second piston rod 85 is connected to the side of the second piston plate 84 opposite to the third material guide hole 83, and the second piston rod 85 is connected to the rotating traction member 5.

[0048] In the embodiment of the present invention, preferably, the second piston assembly can also be a piston, and a through hole is provided on the piston, and a one-way valve is provided in the through hole, so that the effect of one-way conveying can be achieved when the piston moves. The second piston rod 85 slides through the second chamber shell 81, and the fourth material guide hole 86 is evenly arranged on the second piston plate 84. The second rotating baffle 87 is rotatably connected to the second piston plate 84 through a torsion spring, and is movably fitted on the edge of the fourth material guide hole 86. In this way, the traction rod 55 pulls the second piston rod 85 to move through the hinge 56, and the second piston rod 85 drives the second piston plate 84 to move in the second chamber shell 81, so that when the second piston plate 84 is away from the third material guide hole 83, the material can be drawn in through the third material guide hole 83, and when the second piston plate 84 approaches the third material guide hole 83, the material passes through the fourth material guide hole 86, so that when the feed connector 72 draws the material from the connecting pipe 9 to the first chamber shell 71, the material in the second chamber shell 81 can be drawn, and then the circulation of the material can be completed.

[0049] like Figure 1 and 5 As shown, as a preferred embodiment of the present invention, a base 6 is fixedly connected to one end of the outer shell 1, and the base 6 is rotatably connected to a rotating traction member 5 at one end of a transmission shaft 4. An upper cover 2 is installed at the other end of the outer shell 1, and a driving assembly is installed on the upper cover 2. The driving assembly is transmission-connected to the rotating traction member 5 at the other end of the transmission shaft 4.

[0050] In the embodiment of the present invention, preferably, the driving component can adopt a motor 3, the upper cover 2 can be connected to the outer shell 1 by threaded connection or rivets, a feed pipe 21 is penetrated on the upper cover 2, a discharge pipe 10 is penetrated on the side of the outer shell 1 close to the base 6, a valve can be provided on the discharge pipe 10, a pump group is embedded on the discharge pipe 10, the input end of the pump group is connected to the inner shell 1, the output end of the pump group is connected to the pipeline, and the pump group can be started to spray out the material in the outer shell 1, the base 6 can cooperate to maintain the stability of the stirring mechanism, the motor 3 can preferably adopt a motor or a mechanism with a rotating movement at the output end, after the motor 3 is running, the transmission shaft 4 can be driven to rotate by rotating the traction member 5, thereby forming material stirring and circulation, and the output end of the motor 3 is transmission-connected with the end of the second cross bar 53 away from the fixed connecting rod 52.

[0051] like Figure 5 As shown, as a preferred embodiment of the present invention, the base 6 includes a guide block 61 and a shaft rod 62, the guide block 61 is fixedly connected to the bottom of the shell 1, the guide block 61 is rotatably connected to the shaft rod 62, and the shaft rod 62 is rotatably connected to the rotating traction member 5.

[0052] In the embodiment of the present invention, preferably, the guide block 61 is a truncated cone structure, the shaft 62 is rotatably connected to the center of the end face of the guide block 61, the shaft 62 and the second cross bar 53 are connected for transmission, and the guide block 61 cooperates with the shaft 62 to further maintain the stability of the stirring mechanism.

[0053] A concrete spraying device for tunnel construction, wherein a stirring mechanism can homogenize materials when stirring and rotating, and pull a circulation mechanism at the same time, and a material introduction component 8 and a material guide component 7 in the circulation mechanism can be pulled to move, so that the stirring mechanism and the material introduction component 8 and the material guide component 7 can be used in a continuous cycle to form a highly efficient homogenization effect of the materials in the shell 1.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A concrete spraying device for tunnel construction, comprising a housing, characterized in that: Also includes: A stirring mechanism, rotatably connected in the housing, for homogenizing the material through multiple stirring; The circulation mechanism is connected to the outer shell and is in driving connection with the stirring mechanism, and is used to promote the convergence of materials at different levels under the drive of the stirring mechanism; The circulation mechanism includes a material introduction component and a material guide component, the material introduction component and the material guide component are connected through a connecting pipe, the stirring mechanism and the material introduction component and the material guide component are all transmission-connected, and the stirring mechanism drives the material introduction component and the material guide component to alternately inhale and discharge materials, the material guide component can inhale materials from one layer in the shell and introduce them into the connecting pipe, and the material introduction component can inhale materials from the connecting pipe and discharge them from another layer in the shell; The material guide assembly comprises a first chamber shell fixedly connected to the outer shell, a first piston assembly is movably arranged in the first chamber shell, the first piston assembly is transmission-connected to the rotating traction member, one end of the first chamber shell is connected to the connecting pipe through the feed joint, and the other end of the first chamber shell is connected to the outer shell through the first material guide hole; The first piston assembly comprises a first piston plate slidably connected in the first chamber shell, a second material guide hole is penetrated on the first piston plate, a first rotating baffle is rotatably connected to a side of the second material guide hole opposite to the first material guide hole, a first piston rod is connected to a side of the first piston plate opposite to the first material guide hole, and the first piston rod is connected to a rotating traction member; The material introduction assembly comprises a second chamber shell fixedly connected to the outer shell, a second piston assembly is movably arranged in the second chamber shell, the second piston assembly is transmission-connected to the rotating traction member, one end of the second chamber shell is connected to the connecting pipe through a discharge joint, and the other end of the second chamber shell is connected to the outer shell through a third material introduction hole; The second piston assembly includes a second piston plate slidably connected in the second chamber shell, a fourth material guide hole is penetrated through the second piston plate, a second rotating baffle is rotatably connected to the side of the fourth material guide hole opposite to the discharge joint, a second piston rod is connected to the side of the second piston plate opposite to the third material guide hole, and the second piston rod is connected to the rotating traction member.

2. The concrete spraying device for tunnel construction according to claim 1, characterized in that: The stirring mechanism includes a transmission shaft, which is rotatably connected in the shell through a bracket, and the end of the transmission shaft is transmission-connected through a rotating traction member used for stirring and a material introduction component and a material guide component. The transmission connection on the rotating traction member is provided with a driving component for driving the rotating traction member and the transmission shaft to rotate.

3. The concrete spraying device for tunnel construction according to claim 2, characterized in that: The rotating traction member includes a first cross bar, both ends of which are rotationally connected to the second cross bar through fixed connecting rods, a group of second cross bars are connected to the transmission shaft away from the end of the fixed connecting rod, and the fixed connecting rod is connected to the transmission shaft through a transmission assembly, a material introduction assembly and a material guide assembly.

4. The concrete spraying device for tunnel construction according to claim 3, characterized in that: The transmission assembly comprises a bearing sleeve rotatably connected to the periphery of the fixed connecting rod and a traction rod fixedly connected to the outside of the bearing sleeve. The end of the traction rod away from the bearing sleeve is transmission-connected to the material introduction assembly and the material guide assembly through a hinge.

5. The concrete spraying device for tunnel construction according to claim 1, characterized in that: The material introduction component and the material guiding component are respectively arranged in two groups on both sides of the shell, and the material introduction component on one side is arranged opposite to the material guiding component on the other side, and the transmission components connected to the fixed connecting rods at both ends of the first cross bar of the same group are respectively connected to the material introduction component and material guiding component opposite to the two sides.

6. The concrete spraying device for tunnel construction according to claim 2, characterized in that: A base is fixedly connected to one end of the shell, and the base is rotatably connected to a rotating traction member at one end of the transmission shaft. An upper cover is installed at the other end of the shell, and a driving assembly is installed on the upper cover. The driving assembly is transmission-connected to the rotating traction member at the other end of the transmission shaft.

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