Sprayed concrete leveling device

Abstract

The utility model discloses a sprayed concrete leveling device, and belongs to the technical field of sprayed concrete construction equipment. A sprayed concrete leveling device comprises a scraping plate used for scraping away concrete adhering to a steel arch and an installation structure detachably connected with a mechanical arm of a concrete wet spraying trolley, and the scraping plate is fixedly connected with the installation structure. The device has the advantages that the efficiency of removing concrete on the steel arch is improved, and the safety of manual construction is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shotcrete construction equipment, in particular to a shotcrete leveling device. Background Art

[0002] During the tunnel construction process of water conservancy projects, highway projects, pumped storage projects and other projects, poor geological conditions (IV, V type surrounding rock and other poor geological tunnel sections) are often encountered. Generally, the support method of steel mesh + system anchor + shotcrete is adopted. The flatness of shotcrete is an important quality control item and needs to be strictly controlled. In the case of poor geological conditions, shotcrete is usually sprayed with about 4cm of concrete, then the mesh is hung, the steel arch is erected, and then the concrete is sprayed layer by layer to the designed thickness (such as Figure 6-7 After the steel arch is erected, during the spraying of concrete, a portion of the concrete will inevitably adhere to the steel arch, causing the sprayed concrete at the steel arch to bulge severely and affecting the overall flatness of the sprayed concrete.

[0003] To improve the overall smoothness of shotcrete in tunnels, concrete adhering to the steel arch is typically chiseled off manually before the final layer of concrete is sprayed. This results in low construction efficiency, high costs, and significant safety risks. To improve efficiency, reduce costs, and ensure safety, the development of a shotcrete leveling device that mechanically removes concrete adhering to the steel arch is of great significance. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that during the shotcrete construction process of tunnel construction, the concrete sticking on the steel arch frame needs to be manually removed, which is inefficient and affects the construction efficiency. A shotcrete leveling device is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A shotcrete leveling device comprises a scraper for scraping off concrete stuck on a steel arch frame and a mounting structure detachably connected to a mechanical arm of a concrete wet spraying trolley, wherein the scraper is fixedly connected to the mounting structure.

[0007] Furthermore, the mounting structure includes a support column and a base, and two ends of the support column are connected to the scraper and the base respectively.

[0008] Furthermore, the support column includes a lower column and an upper column, the bottom of the lower column is connected to the scraper, the top of the upper column is connected to the base, and the lower column and the upper column are detachably sleeved together.

[0009] Furthermore, the support column further includes a fixing screw hole and a fixing bolt, the fixing screw hole passes through the lower column and the upper column, and the fixing bolt is arranged in the fixing screw hole.

[0010] Furthermore, the base includes a disc, an adjusting screw hole, and an adjusting bolt. The bottom of the disc is connected to the upper cylinder. Adjusting screw holes are evenly opened on the circumferential side wall of the adjusting bolt. Multiple adjusting screw holes are radially distributed, and adjusting bolts are equipped in the adjusting screw holes.

[0011] Furthermore, the adjusting bolt includes a threaded rod and a bolt head, and the outer diameter of the bolt head has various values.

[0012] Furthermore, the scraper is arranged at an angle.

[0013] Compared with the prior art, the present invention provides a shotcrete leveling device with the following beneficial effects:

[0014] The utility model discloses a shotcrete leveling device. When in use, the shotcrete gun head on the mechanical arm of the concrete wet spraying trolley is first removed, and the device is installed on the mechanical arm of the concrete wet spraying trolley through the installation structure. The mechanical arm of the concrete wet spraying trolley is used to replace manual labor. The staff normally operates the mechanical arm to drive the device, so that the scraper is scraped along the surface of the steel arch frame to scrape off the concrete sticking to the surface of the steel arch frame. Compared with manual concrete removal, the cleaning operation efficiency is significantly improved, and it is safer and more convenient to operate.

[0015] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on an examination of the following; or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a right side schematic diagram of the overall structure of the utility model;

[0018] Figure 3 It is a schematic top view of the overall structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the explosion effect of the overall structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the effect after the base of the utility model is adjusted;

[0021] Figure 6This is a schematic diagram of the tunnel section of the present utility model;

[0022] Figure 7 For the utility model Figure 6 Schematic diagram of the cross-section in the AA direction.

[0023] In the picture:

[0024] 1. Scraper; 2. Support column; 201. Lower column; 202. Upper column; 203. Fixing screw hole; 204. Fixing bolt; 3. Base; 301. Disc; 302. Adjusting screw hole; 303. Adjusting bolt; 304. Threaded rod; 305. Bolt head. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Reference Figure 1-7 The utility model provides a shotcrete leveling device, comprising a scraper 1 for scraping off the concrete sticking on the steel arch frame, and a mounting structure detachably connected to the mechanical arm of the concrete wet spraying trolley. The scraper 1 is taken as an example of a steel plate with a length of 50 cm, a width of 10 cm, and a thickness of 0.5 cm.

[0027] The scraper 1 is fixedly connected to the mounting structure. In the prior art, the mechanical arm of the concrete wet spraying trolley and the shotcrete gun head are mostly fixed by a clamp with a circular ring structure, and the clamp clamps the disc structure on the shotcrete gun head for fixation. In the present application, the mounting structure is clamped by the clamp, so that the device can be detachably mounted on the mechanical arm.

[0028] The scraper 1 is tilted so that a certain angle is formed between the scraper 1 and the surface of the steel arch frame, thereby preventing the scraper 1 from being caught by the steel bars on the steel arch frame.

[0029] The mounting structure includes a support column 2 and a base 3. The two ends of the support column 2 are connected to the scraper 1 and the base 3 respectively. The scraper 1 is tilted and is in a non-vertical relationship with the support column 2. Figure 2 As shown, the inclination angle of the scraper 1 can be selected to be 30 degrees. When in use, the clamp on the robot arm clamps the base 3, thereby installing the device on the robot arm.

[0030] The support column 2 includes a lower column 201 and an upper column 202. The bottom of the lower column 201 is connected to the scraper 1, and the top of the upper column 202 is connected to the base 3. The lower column 201 and the upper column 202 are detachably connected together. When in use, the lower column 201 and the upper column 202 are connected together. After use, the lower column 201 and the upper column 202 are disassembled. The lower column 201 and the scraper 1 are one part, and the upper column 202 and the base 3 are another part. This is mainly because when constructing in a tunnel environment, there is generally a lack of lifting equipment, and the device is moved manually. The overall weight is large, and it is not easy to move. Secondly, it is not easy to adjust the angle and position when installed on a robotic arm. After disassembling, the above problems can be well solved.

[0031] The support column 2 also includes a fixing screw hole 203 and a fixing bolt 204. The fixing screw hole 203 passes through the upper part of the lower column 201 and the lower part of the upper column 202. The fixing bolt 204 is installed in the fixing screw hole 203. After the upper part of the lower column 201 and the lower part of the upper column 202 are put together, the fixing screw hole 203 on the lower column 201 and the fixing screw hole 203 on the upper column 202 are aligned, and then the fixing bolt is inserted to connect the lower column 201 and the upper column 202 together.

[0032] The base 3 includes a disc 301, an adjusting screw hole 302, and an adjusting bolt 303. The bottom of the disc 301 is connected to the top of the upper cylinder 202. The adjusting screw holes 302 are evenly processed on the circumferential side wall of the adjusting bolt 303. Multiple adjusting screw holes 302 are radially distributed. Taking 8 adjusting screw holes 302 as an example, the adjusting screw holes 302 are in a M shape, and the adjusting screw holes 302 are equipped with adjusting bolts 303. When in use, by screwing the adjusting bolt 303, the axial length of the adjusting bolt 303 outside the adjusting screw hole 302 is adjusted, thereby adjusting the overall outer diameter of the disc 301 and the adjusting bolt 303 to be suitable for clamps on robotic arms of different specifications, thereby improving the versatility of the device.

[0033] The adjusting bolt 303 includes a threaded rod 304 and a bolt head 305. The outer diameter values ​​of the bolt head 305 are various. For the clamp on the robotic arm, the outer diameter value and thickness value of the disk corresponding to the smaller clamp are smaller, and the outer diameter value and thickness value of the disk clamped by the larger clamp are also larger. Therefore, when the overall outer diameter size of the base 3 needs to be increased, the adjusting bolt 303 with the bolt head 305 corresponding to the clamping thickness of the clamp is selected according to the actual size of the clamp, so that when the clamp is clamped to the base 3 through the adjusting bolt 303, the clamping is tighter.

[0034] Working principle: When in use, first remove the shotcrete gun head on the robotic arm of the concrete wet spraying trolley, and then select the adjusting bolt 303 with a suitable outer diameter value of the bolt head 305 according to the size of the clamp on the robotic arm, and screw the adjusting bolt 303 into the adjusting screw hole 302, so that the overall outer diameter value of the base 3 corresponds to the clamping size of the clamp, so as to clamp the base 3 with the clamp, and then use the fixing bolt 204 to sleeve the lower column 201 and the upper column 202 together. The staff operates the robotic arm normally to drive the device, so that the scraper scrapes against the surface of the steel arch frame to scrape off the concrete sticking to the surface of the steel arch frame. After scraping, remove the device and replace the shotcrete gun head to carry out normal shotcrete operation to spray the last layer of concrete flatly and evenly. Repeat this cycle and advance forward step by step to eventually form a relatively flat shotcrete surface.

[0035] It should be noted that although the rotation angle of the shotcrete gun head on the robotic arm can be close to 360 degrees, the position adjustment of the robotic arm in a large range during operation is mainly achieved by the rotation, extension and lifting of the main arm. Therefore, when installing this device, the horizontal length direction of the scraper 1 can be made perpendicular to the lifting direction of the robotic arm. In this way, when operating the robotic arm, it mainly relies on the main arm of the robotic arm to perform a large range of rapid movements, that is, it can drive the scraper 1 to scrape off the concrete on the steel arch frame in a larger range, thereby reducing frequent small-scale operations. First, it improves the convenience of operation, and second, it further improves the cleaning efficiency.

[0036] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0038] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A shotcrete leveling device, characterized in that: It comprises a scraper (1) for scraping off concrete stuck on a steel arch frame and a mounting structure detachably connected to a mechanical arm of a concrete wet spraying trolley, wherein the scraper (1) is fixedly connected to the mounting structure; The mounting structure comprises a support column (2) and a base (3), and the two ends of the support column (2) are respectively connected to the scraper (1) and the base (3); when in use, the clamp on the robot arm clamps the base (3) to install the device on the robot arm; The support column (2) comprises a lower column (201) and an upper column (202), the bottom of the lower column (201) is connected to the scraper (1), the top of the upper column (202) is connected to the base (3), and the lower column (201) and the upper column (202) are detachably sleeved together; The base (3) includes a disk (301), an adjusting screw hole (302), and an adjusting bolt (303). The bottom of the disk (301) is connected to the upper cylinder (202). The adjusting screw holes (302) are evenly opened on the circumferential side wall of the adjusting bolt (303). The plurality of adjusting screw holes (302) are radially distributed. The adjusting screw holes (302) are equipped with adjusting bolts (303).

2. A shotcrete leveling device according to claim 1, characterized in that: The support column (2) further comprises a fixing screw hole (203) and a fixing bolt (204); the fixing screw hole (203) passes through the lower column (201) and the upper column (202); and the fixing bolt (204) is arranged in the fixing screw hole (203).

3. A shotcrete leveling device according to claim 1, characterized in that: The adjusting bolt (303) comprises a threaded rod (304) and a bolt head (305), and the outer diameter of the bolt head (305) has various values.

4. A shotcrete leveling device according to claim 1, characterized in that: The scraper (1) is arranged at an angle, so that a certain angle is formed between the scraper (1) and the surface of the steel arch frame, thereby preventing the scraper (1) from being caught by the steel bars on the steel arch frame.

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