Highway tunnel construction sprayed concrete flatness adjusting device

Abstract

The utility model provides a sprayed concrete flatness adjusting device for highway tunnel construction, and belongs to the technical field of highway tunnel construction. Comprising a sleeve used for being arranged on a spraying device nozzle in a sleeving mode, a fixing base is fixed to the end, away from the spraying device nozzle, of the sleeve, the spraying device nozzle is sleeved with the fixing base, a plurality of fastening bolts are arranged on the surface of the fixing base, and the fastening bolts penetrate through the fixing base and are fixedly connected with the surface of the spraying device nozzle in an inserted mode; a mounting seat is fixed in the middle of the sleeve, arm plates are movably mounted on two sides of the mounting seat, the two arm plates are symmetrically arranged relative to the axis of the sleeve, the two arm plates extend to the front of the nozzle of the wet spraying equipment, a scraper is fixed on the two arm plates, and the two arm plates are horizontally aligned and are perpendicular to the axis of the sleeve. The device can be firmly installed on the nozzle of the wet spraying equipment for use, and the situation that the nozzle of the wet spraying equipment drives the sleeve to move when swinging, and consequently the concrete finishing effect of the scraper is affected can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of highway tunnel construction, in particular to a device for adjusting the flatness of shotcrete in highway tunnel construction. Background Art

[0002] In highway tunnel construction, shotcrete is a commonly used construction method, which can quickly form a stable support structure. However, due to the influence of various factors, shotcrete is prone to produce uneven surfaces during construction, which not only affects the beauty of the tunnel, but may also affect the subsequent construction safety and structural stability. Therefore, it is very necessary to adjust the flatness of the shotcrete surface.

[0003] At present, when shotcrete is constructed in a highway tunnel, the excavation support work platform will be evacuated from the face in order to facilitate the shotcrete operation, resulting in no ready-made work platform available during the manual finishing process, affecting work efficiency. In this regard, in the prior art, a Chinese patent with publication number CN218150954U discloses a shotcrete flatness finishing device, including a sleeve mounted on the nozzle of a wet spraying device, a spring base is provided at the mouth of the sleeve, a spring is installed on the spring base, and the axis of the spring is parallel to the axis of the sleeve, a scraper base is installed at the end of the spring, and a scraper is installed on the scraper base. When in use, after the shotcrete is sprayed and initially solidified, the device is mounted on the nozzle of the wet spraying device through the sleeve, and the adjustable mechanical arm of the wet spraying device is used to drive the device to use a scraper to trim the parts with poor flatness.

[0004] In actual use, the sleeve structure of the prior art is relatively simple. Although it is convenient for disassembly and assembly, the lack of a fixing mechanism causes the sleeve to move easily due to the swing of the robotic arm when the robotic arm drives the device to trim the concrete surface, thereby affecting the trimming effect of the concrete surface.

[0005] Therefore, the present application provides a device for adjusting the flatness of shotcrete in highway tunnel construction to solve the above-mentioned technical problems. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a device for adjusting the flatness of shotcrete in highway tunnel construction so as to solve the problem that the existing concrete flatness finishing device shakes during use, thereby affecting the finishing effect of concrete.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0008] A device for adjusting the flatness of shotcrete for highway tunnel construction, comprising a sleeve for sleeved on a spraying device nozzle, a fixing seat being fixed to one end of the sleeve away from the spraying device nozzle, the fixing seat being sleeved on the spraying device nozzle, a plurality of fastening bolts being arranged on the surface of the fixing seat, the fastening bolts penetrating the fixing seat and being plugged and fixed to the surface of the spraying device nozzle;

[0009] A mounting seat is fixed in the middle of the sleeve, and arm plates are movably installed on both sides of the mounting seat. The two arm plates are symmetrically arranged about the axis of the sleeve, and the two arm plates extend in front of the nozzle of the spraying equipment nozzle and are fixed with scrapers. The two arm plates are horizontally aligned and perpendicular to the axis of the sleeve, and a movable ring is sleeved on the sleeve, and connecting rods are movably installed on both sides of the movable ring, and the two connecting rods are movably connected to the middle of the two arm plates respectively.

[0010] Optionally, the plurality of fastening bolts are divided into at least three groups and are evenly distributed around the surface of the fixing seat.

[0011] Optionally, brackets are symmetrically fixed on both sides of the mounting seat, a mounting groove is provided at one end of the bracket away from the mounting seat, and one end of the arm plate is rotatably mounted in the end mounting groove of the bracket.

[0012] Optionally, magnetic blocks that are magnetically attracted to each other are installed at one end of the two horizontally aligned arm plates.

[0013] Optionally, a limit frame is fixed on the surface of the movable ring, and a positioning pin is vertically inserted into the limit frame. The lower end of the positioning pin is hung through the movable ring and plugged into the surface of the sleeve, and the top end of the positioning pin extends out of the upper end surface of the limit frame and is fixed with a pull ring.

[0014] Optionally, at least two positioning holes are formed on the surface of the sleeve, and the lower end of the positioning pin is plugged into and fits with the positioning holes.

[0015] Optionally, a limit plate is fixed to the middle of the positioning pin, the limit plate is located between the movable ring and the limit frame, and a spring is installed on the limit plate, and the spring is connected to the lower end surface of the limit frame.

[0016] Compared with the prior art, the utility model has at least the following beneficial effects:

[0017] In the above scheme, thanks to the setting of the sleeve, the fixing seat and the fastening bolts, the sleeve and the fixing seat can be conveniently installed firmly on the nozzle of the spraying equipment using the fastening bolts for use, which can effectively prevent the nozzle of the spraying equipment from driving the sleeve to move when swinging and affecting the concrete finishing effect of the scraper.

[0018] At the same time, thanks to the cooperation of the mounting base, the arm plate, the scraper, the movable ring and the connecting rod, the movable ring and the connecting rod can be used to control whether the two arm plates are horizontally aligned at the front end of the spraying equipment nozzle. Therefore, the arm plate can be conveniently controlled to drive the scraper to align at the front end of the spraying equipment nozzle, so that the scraper can follow the movement of the spraying equipment nozzle to trim the concrete sprayed in the highway tunnel, or the arm plate can be controlled to drive the scraper to separate to both sides of the port of the spraying equipment nozzle to ensure that the spraying equipment nozzle can spray concrete, so that the device can be firmly installed with the spraying equipment nozzle without frequent disassembly and assembly, and it is flexible and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present invention and, together with the description, further serve to explain the principles of the present invention and enable those skilled in the relevant art to make and use the present invention.

[0020] Figure 1 A schematic diagram of the structure of the shotcrete flatness adjustment device when it is used in highway tunnel construction;

[0021] Figure 2 This is a schematic diagram of the structure of a shotcrete flatness adjustment device for highway tunnel construction;

[0022] Figure 3 for Figure 2 A magnified schematic diagram of the structure at center A;

[0023] Figure 4 It is the structural diagram of the arm plate.

[0024] [reference numerals]

[0025] 1. Wetting equipment nozzle; 2. Sleeve; 201. Positioning hole; 3. Fixing seat; 301. Fastening bolt; 4. Mounting seat; 5. Bracket; 6. Arm plate; 601. Magnetic block; 7. Scraper; 8. Movable ring; 801. Limiting frame; 802. Positioning pin; 803. Pull ring; 804. Limiting plate; 805. Spring; 9. Connecting rod.

[0026] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0027] The following is a detailed description of a road tunnel construction shotcrete flatness adjustment device provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0028] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0029] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0030] It is to be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0031] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0032] like Figure 1 and Figure 2As shown, an embodiment of the utility model provides a device for adjusting the flatness of shotcrete for highway tunnel construction, including a sleeve 2 for being sleeved on a spraying equipment nozzle 1, a fixing seat 3 being fixed to one end of the sleeve 2 away from the nozzle of the spraying equipment nozzle 1, the fixing seat 3 being sleeved on the spraying equipment nozzle 1, a plurality of fastening bolts 301 being arranged on the surface of the fixing seat 3, the plurality of fastening bolts 301 being divided into at least three groups and evenly distributed around the surface of the fixing seat 3, and the fastening bolts 301 passing through the fixing seat 3 and being plugged and fixed to the surface of the spraying equipment nozzle 1, so that the sleeve 2 can be sleeved and fixed on the spraying equipment nozzle 1 through the fixing seat 3 and the fastening bolts 301, so as to prevent the sleeve 2 from loosening and moving when the spraying equipment nozzle 1 swings.

[0033] At the same time, a mounting seat 4 is fixed to the middle of the sleeve 2, and brackets 5 are symmetrically fixed on both sides of the mounting seat 4. A mounting groove is opened at one end of the bracket 5 away from the mounting seat 4, and an arm plate 6 is rotatably installed in the mounting groove. The two arm plates 6 are symmetrically arranged about the axis of the sleeve 2, and the two arm plates 6 extend to the front of the nozzle of the spraying equipment nozzle 1, and are fixed with scrapers 7. The two arm plates 6 are horizontally aligned and perpendicular to the axis of the sleeve 2, so that the two scrapers 7 can be aligned in front of the nozzle of the spraying equipment nozzle 1 to form a concrete leveling tool, so as to follow the movement of the spraying equipment nozzle 1 to scrape the concrete surface.

[0034] In addition, a movable ring 8 is sleeved on the sleeve 2, and connecting rods 9 are movably installed on both sides of the movable ring 8, and the two connecting rods 9 are movably connected to the middle parts of the two arm plates 6. Therefore, the movable ring 8 on the sliding sleeve 2 can be used to control the arm plate 6 to drive the scraper 7 to align at the front end of the spraying device nozzle 1, so that the scraper 7 can follow the movement of the spraying device nozzle 1 to trim the concrete sprayed in the highway tunnel, or the arm plate 6 can be controlled to drive the scraper 7 to separate to both sides of the port of the spraying device nozzle 1 to ensure that the spraying device nozzle 1 can spray concrete, so that the device can be firmly installed with the spraying device nozzle 1 without frequent disassembly and assembly, and it is flexible and convenient to use.

[0035] In specific implementation, Figure 4 As shown, one end of the arm plate 6 is rotatably installed in the end installation groove of the bracket 5, and the other ends of the two arm plates 6 are installed with magnetic blocks 601 that are magnetically attracted to each other. The magnetic blocks 601 can further improve the docking effect of the ends of the two arm plates 6.

[0036] like Figure 2 and Figure 3As shown, a limiting frame 801 is fixed on the surface of the movable ring 8, and a positioning pin 802 is vertically inserted into the limiting frame 801. The lower end of the positioning pin 802 is hung through the movable ring 8 and is plugged into and matched with the surface of the sleeve 2. At least two positioning holes 201 are opened on the surface of the sleeve 2, and there is a certain distance between the two positioning holes 201. The lower end of the positioning pin 802 is plugged into and matched with the positioning hole 201, so that when the positioning pin 802 fixes the movable ring 8 to the two sleeves 2, the connecting rod 9 will be used to drive the two arm plates 6 to open or dock.

[0037] Specifically, in this embodiment, the top end of the positioning pin 802 extends out of the upper end surface of the limiting frame 801 and is fixed with a pull ring 803, so that the positioning pin 802 can be easily pulled up, and a limiting plate 804 is fixed in the middle of the positioning pin 802, and the limiting plate 804 is located between the movable ring 8 and the limiting frame 801, and a spring 805 is installed on the limiting plate 804, and the spring 805 is connected to the lower end surface of the limiting frame 801, so that the positioning pin 802 is elastically installed on the movable ring 8, which is convenient for automatic resetting.

[0038] The utility model provides a working principle. The highway tunnel construction shotcrete flatness adjustment device can, when in use, cover the sleeve 2 and the fixing seat 3 on the spraying equipment nozzle 1, and fix them with the fastening bolts 301 to prevent the spraying equipment nozzle 1 from swinging and causing the sleeve 2 to loosen and move. At the same time, the arm plate 6 installed by the mounting seat 4 and the bracket 5 in the middle part of the sleeve 2 will be placed on both sides of the spraying equipment nozzle 1, and the ends of the two arm plates 6 will be connected in front of the port of the spraying equipment nozzle 1 through the traction of the connecting rods 9 on both sides of the movable ring 8, so as to drive the scrapers 7 on the two arm plates 6 to align to form a complete concrete leveling tool. In addition, since the two arm plates 6 can be controlled by the connecting rod 9 by adjusting the position of the movable ring 8 on the sleeve 2, the arm plate 6 can be controlled to drive the scraper 7 to align at the front end of the spraying equipment nozzle 1, so that the scraper 7 can follow the movement of the spraying equipment nozzle 1 to trim the concrete sprayed in the highway tunnel, or the arm plate 6 can be controlled to drive the scraper 7 to separate to both sides of the port of the spraying equipment nozzle 1 to ensure that the spraying equipment nozzle 1 can spray concrete, so that the device can be firmly installed with the spraying equipment nozzle 1 without frequent disassembly and assembly, and it is flexible and convenient to use.

[0039] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A device for adjusting the flatness of shotcrete for highway tunnel construction, comprising a sleeve (2) for sleeved on a nozzle (1) of a spraying device, characterized in that: A fixing seat (3) is fixed to one end of the sleeve (2) away from the nozzle of the spraying device nozzle (1); the fixing seat (3) is sleeved on the spraying device nozzle (1); a plurality of fastening bolts (301) are arranged on the surface of the fixing seat (3); the fastening bolts (301) penetrate the fixing seat (3) and are plugged and fixed to the surface of the spraying device nozzle (1); A mounting seat (4) is fixed in the middle of the sleeve (2), and arm plates (6) are movably mounted on both sides of the mounting seat (4). The two arm plates (6) are symmetrically arranged about the axis of the sleeve (2), and the two arm plates (6) extend in front of the nozzle of the spraying device nozzle (1) and are fixed with a scraper (7). The two arm plates (6) are horizontally aligned and perpendicular to the axis of the sleeve (2), and a movable ring (8) is sleeved on the sleeve (2), and connecting rods (9) are movably mounted on both sides of the movable ring (8), and the two connecting rods (9) are movably connected to the middle of the two arm plates (6) respectively.

2. The device for adjusting the flatness of shotcrete for highway tunnel construction according to claim 1 is characterized in that: The plurality of fastening bolts (301) are divided into at least three groups and are evenly distributed around the surface of the fixing seat (3).

3. The device for adjusting the flatness of shotcrete for highway tunnel construction according to claim 1 is characterized in that: Brackets (5) are symmetrically fixed on both sides of the mounting seat (4); an end of the bracket (5) away from the mounting seat (4) is provided with a mounting groove, and one end of the arm plate (6) is rotatably mounted in the end mounting groove of the bracket (5).

4. The device for adjusting the flatness of shotcrete for highway tunnel construction according to claim 1 is characterized in that: Magnetic blocks (601) that attract each other are installed at one end of the two horizontally aligned arm plates (6).

5. The device for adjusting the flatness of shotcrete for highway tunnel construction according to claim 1 is characterized in that: A limiting frame (801) is fixed on the surface of the movable ring (8), and a positioning pin (802) is vertically inserted into the limiting frame (801). The lower end of the positioning pin (802) is hung through the movable ring (8) and is plugged into and matched with the surface of the sleeve (2). The top end of the positioning pin (802) extends out of the upper end surface of the limiting frame (801) and is fixed with a pull ring (803).

6. The device for adjusting the flatness of shotcrete for highway tunnel construction according to claim 5 is characterized in that: At least two positioning holes (201) are formed on the surface of the sleeve (2), and the lower end of the positioning pin (802) is plugged into and matched with the positioning holes (201).

7. The device for adjusting the flatness of shotcrete for highway tunnel construction according to claim 5, characterized in that: A limiting plate (804) is fixed in the middle of the positioning pin (802), the limiting plate (804) is located between the movable ring (8) and the limiting frame (801), and a spring (805) is installed on the limiting plate (804), and the spring (805) is connected to the lower end surface of the limiting frame (801).

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