Tunnel primary support concrete flatness control device

Abstract

The utility model relates to the field of tunnel primary support construction, in particular to a tunnel primary support concrete flatness control device. The surface of the nozzle is slidably connected with a sleeve, and the upper end of the sleeve is fixedly connected with a scraping plate; the connecting mechanism used for connecting and fixing is arranged on one side of the sleeve, the sleeve can be connected with the nozzle, after the nozzle is inserted, the connecting mechanism is inserted into the sleeve for preliminary fixing, then the connecting mechanism is locked through the anti-disengaging assembly, and stable connection is conducted; the continuous unlocking assembly can be quickly disassembled, replacement is facilitated when the continuous unlocking assembly is damaged, and during connection at the moment, connection and supporting of all parts are stable, so that the spraying trolley is more stable when driving the device to conduct leveling and scraping operation on the tunnel arch center, the flatness control effect on tunnel arch center concrete scraping during actual operation is improved, and the working efficiency of the spraying trolley is improved. And the flatness of the concrete surface of the tunnel supporting part is improved after tunnel finishing operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel initial support construction, and in particular relates to a tunnel initial support concrete flatness control device. Background Art

[0002] In tunnel construction, concrete leveling is a key construction link. Its goal is to ensure that the surface of the tunnel lining or other concrete structures is flat and smooth to meet the design requirements and use functions. In the concrete pouring process, manual filling and leveling are indispensable links. For the parts with insufficient and excessive materials, local filling and removal should be carried out, and then the leveling machine should be used for rough leveling. Before the initial setting of the concrete, it should be manually leveled and finely leveled using tools such as scrapers, checkers and wooden spatulas to ensure that the flatness of the concrete surface is not greater than the specified requirements;

[0003] After searching, a Chinese patent discloses a tunnel initial support flatness control mold (Announcement No. CN 219081594U). This patent technology can improve the appearance quality and safety factor of the initial support flatness and shorten the construction time. However, in the technical solution of the above patent document, the connection method between the sleeve and the rubber nozzle is a simple connection and fixation through bolts. After the bolts and soft rubber are used for a long time, the rubber holes will expand and become loose and shake, resulting in the spraying trolley. When the scraper is used for leveling, the connection will shake relatively, which will affect the flatness and efficiency during use.

[0004] Therefore, the utility model proposes a tunnel primary support concrete flatness control device to solve the above-mentioned problems in the prior art. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the utility model provides a tunnel primary support concrete flatness control device, which has the advantages of convenient and fast connection, stable connection, and not easy to loosen. It solves the problem that the connection method of the existing tunnel primary support concrete flatness control device is to simply connect and fix the rubber nozzle through a sleeve by bolts. After the bolts and the soft rubber are used for a long time, the holes in the rubber will expand and become loose and shake, resulting in shaking when the scraper is used for leveling, which will affect the flatness and efficiency during use.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose of convenient and fast connection, stable connection and not easy to loosen, the utility model provides the following technical solutions:

[0009] A tunnel primary support concrete flatness control device includes: a nozzle, a sleeve is slidably connected to the surface of the nozzle, and a scraper is fixedly connected to the upper end of the sleeve; a connection mechanism, which is arranged on one side of the sleeve and is used for connection and fixation; a locking mechanism, which is arranged on one side of the connection mechanism and is used for locking the connection of the connection mechanism. Among them, the locking mechanism includes an anti-disengagement component arranged on one side of the connection mechanism, and a continuous unlocking component is arranged on one side of the anti-disengagement component.

[0010] As a preferred scheme of the tunnel primary support concrete flatness control device of the present invention: the connection mechanism includes a fitting block fixedly connected to the inner wall of the sleeve, a plug rod is slidably connected to the inner wall of the sleeve, one end of the plug rod movably penetrates through the fitting block and extends outwards, and a baffle is fixedly connected to one end of the plug rod.

[0011] Based on the above technical features: The tunnel primary support concrete flatness control device can facilitate the connection of the sleeve and the nozzle through the connection mechanism.

[0012] As a preferred scheme of the tunnel primary support concrete flatness control device of the present invention: a jack is opened at one end of the plug rod, and a locking rod is slidably connected to the inner wall of the jack.

[0013] Based on the above technical features: The tunnel primary support concrete flatness control device can fix the plug rod through the locking rod and the jack to prevent it from disengaging.

[0014] As a preferred scheme of the tunnel primary support concrete flatness control device of the present invention: the anti-disengagement component includes an installation groove opened on the side end of the locking rod, a pin piece is slidably connected to the inner wall of the installation groove, an installation block is fixedly connected to the upper end of the locking rod, a spring is fixedly connected to the surface of the installation block, one end of the spring is fixedly connected to a blocking block, the blocking block slidably penetrates through the inner wall of the installation groove and extends inwards, and the blocking block slidably fits one side of the pin piece.

[0015] Based on the above technical features: The tunnel primary support concrete flatness control device can fix the locking rod through the anti-disengagement component to prevent the locking rod from falling downwards, making the fixation more stable.

[0016] As a preferred scheme of the tunnel primary support concrete flatness control device of the present invention: a pull rod is fixedly connected to the upper end of the blocking block, the pull rod movably penetrates through the installation block and extends upwards, and a pull ring is fixedly connected to the upper end of the pull rod.

[0017] Based on the above technical features: The tunnel primary support concrete flatness control device can conveniently and quickly pull out the blocking block through the pull rod and the pull ring for disassembly.

[0018] As a preferred solution of a tunnel primary support concrete flatness control device described in the present utility model: a slot is provided at the side end of the blocking block, a sliding frame is fixedly connected to the upper end of the locking rod, a inserting piece is slidably connected to the inner wall of the sliding frame, and the inserting piece is movably clamped with the inner wall of the slot.

[0019] Based on the above technical features: the tunnel primary support concrete flatness control device can conveniently unlock the anti-disengagement component continuously through the inserting piece and the slot.

[0020] As a preferred solution of a tunnel primary support concrete flatness control device described in the present utility model: a limiting block is fixedly connected to the inner wall of the sliding frame, and the sliding frame is slidably connected to the surface of the inserting piece through the limiting block.

[0021] Based on the above technical features: the tunnel primary support concrete flatness control device can limit the pulling of the inserting piece through the limiting block to prevent damage caused by pulling and disengagement.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the present utility model provides a tunnel primary support concrete flatness control device, which has the following beneficial effects:

[0024] 1. The sleeve can be connected to the nozzle. After the nozzle is inserted, it is preliminarily fixed by inserting the connecting mechanism into the sleeve, and then the connecting mechanism is locked by the anti-disengagement component for stable connection. It can be quickly disassembled through the continuous unlocking component, which is convenient for replacement when damaged. At this time, during connection, the connection and support of each part are stable, making the wet spraying trolley more stable when driving the device to level and scrape the tunnel arch support, increasing the flatness control effect of scraping the concrete on the tunnel arch during actual operation, and effectively ensuring the flatness of the concrete surface of the tunnel support part after the tunnel trimming operation;

[0025] 2. The anti-disengagement component can be conveniently unlocked continuously through the inserting piece and the slot, and the pulling of the inserting piece can be limited through the limiting block to prevent damage caused by pulling and disengagement; the purpose of convenient and fast connection, stable connection and non-loosening is achieved. Description of the drawings

[0026] Figure 1 It is a schematic structural diagram of the tunnel primary support concrete flatness control device of the present utility model;

[0027] Figure 2 For the present utility model Figure 1 The partial enlarged view at A in;

[0028] Figure 3 It is a cross-sectional view of the tunnel primary support concrete flatness control device of the present utility model;

[0029] Figure 4 For the present utility model Figure 3 Partial enlarged view at position B in the present utility model;

[0030] Figure 5 Schematic diagram of the installation of the stabilizing block of the present utility model.

[0031] In the figure: 1. Scraper; 2. Sleeve; 3. Connecting mechanism; 301. Baffle; 302. Plug rod; 303. Fitting block; 304. Locking rod; 305. Jack; 306. Stabilizing block; 4. Locking mechanism; 401. Anti-disengagement component; 4011. Installation groove; 4012. Pin piece; 4013. Blocking block; 4014. Installation block; 4015. Spring; 4016. Pull rod; 4017. Pull ring; 402. Continuous unlocking component; 4021. Slot; 4022. Sliding frame; 4023. Insert piece; 4024. Limiting block; 5. Nozzle. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] As Figures 1-5 shown, the present utility model provides a technical solution:

[0034] A device for controlling the flatness of the primary support concrete in a tunnel, comprising:

[0035] Nozzle 5, a sleeve 2 is slidably connected to the surface of the nozzle 5, and a scraper 1 is fixedly connected to the upper end of the sleeve 2;

[0036] Connecting mechanism 3, a connecting mechanism 3 for connection and fixation is arranged on one side of the sleeve 2;

[0037] Locking mechanism 4, a locking mechanism 4 for locking the connection of the connecting mechanism 3 is arranged on one side of the connecting mechanism 3; wherein, the locking mechanism 4 includes an anti-disengagement component 401 arranged on one side of the connecting mechanism 3, and a continuous unlocking component 402 is arranged on one side of the anti-disengagement component 401;

[0038] In this embodiment, when the device is used, the support shotcrete construction is first carried out. When the construction site is sprayed, the scraper 1 can be used to flatten and level the concrete surface, and the nozzle 5 is fixedly connected. At this time, the nozzle 5 is inserted into the sleeve 2, and then the connecting mechanism 3 is inserted into the sleeve 2 for preliminary fixation, and then the connecting mechanism 3 is locked by the anti-detachment component 401 to achieve a stable connection. The continuous unlocking component 402 can be quickly disassembled, which is convenient for replacement when damaged. At this time, when connected, no detachment damage occurs. The nozzle 5 is connected to the existing spraying trolley spray The front end of the ejection part has a certain extended length. Through the existing concrete spraying equipment, the scraper 1 can be swept close to the position to be scraped and trimmed to perform leveling and scraping operations. The existing concrete spraying equipment such as the wet sprayer can rise to sweep and spray the tunnel. By connecting the device to the nozzle of the spraying equipment, concrete scraping operations can be performed on the ground or underground. At this time, the locking mechanism 4 of the device is more stable during installation, which increases the control effect of the existing spraying equipment on the scraper 1 when it moves, increases the leveling and trimming effect on the inside of the tunnel arch during actual use, and increases the flatness of the tunnel after trimming.

[0039] As a preferred embodiment, Figure 3 and Figure 5 As shown, the connecting mechanism 3 includes a fitting block 303 fixedly connected to the inner wall of the sleeve 2, and a rod 302 is slidably connected to the inner wall of the sleeve 2. One end of the rod 302 movably passes through the fitting block 303 and extends outward, and one end of the rod 302 is fixedly connected to a baffle 301. When connecting, the rod 302 can pass through the fitting block 303, the stabilizing block 306 and the nozzle 5 for connection. A socket 305 is provided at one end of the rod 302, and a locking rod 304 is slidably connected to the inner wall of the socket 305. The locking rod 304 can prevent the rod 302 from being pulled back and prevent the rod 302 from detaching. The fitting block 303 can increase the connection and fitting effect between the rubber tube and the sleeve 2.

[0040] As a preferred embodiment, Figure 2 and Figure 4As shown in the figure, the anti-disengagement component 401 includes an installation groove 4011 formed on the side end of the locking rod 304. A pin piece 4012 is slidably connected to the inner wall of the installation groove 4011. An installation block 4014 is fixedly connected to the upper end of the locking rod 304. A spring 4015 is fixedly connected to the surface of the installation block 4014. One end of the spring 4015 is fixedly connected to a blocking block 4013. The blocking block 4013 slides through the inner wall of the installation groove 4011 and extends inward. The blocking block 4013 slidably fits one side of the pin piece 4012. The spring 4015 pushes the blocking block 4013 to block the pin piece 4012, so that the locking rod 304 cannot be pulled out, realizing fixation. A pull rod 4016 is fixedly connected to the upper end of the blocking block 4013. The upper end of the pull rod 4016 movably penetrates through the installation block 4014 and extends upward. A pull ring 4017 is fixedly connected to the upper end of the pull rod 4016. When disassembly and unlocking are required, the pull ring 4017 can be pulled at this time. Then the pull ring 4017 drives the pull rod 4016 and the blocking block 4013 to rise. The blocking block 4013 no longer blocks the pin piece 4012. At this time, the pin piece 4012 can be pulled out conveniently and quickly. A slot 4021 is formed on the side end of the blocking block 4013. A sliding frame 4022 is fixedly connected to the upper end of the locking rod 304. A plug piece 4023 is slidably connected to the inner wall of the sliding frame 4022. The plug piece 4023 is movably clamped with the inner wall of the slot 4021. When disassembling through this device, it is rather troublesome to continuously pull the pull ring 4017. At this time, after the blocking block 4013 rises, the plug piece 4023 enters the slot 4021. At this time, the blocking block 4013 cannot descend, and the pin piece 4012 can be disassembled conveniently. A limiting block 4024 is fixedly connected to the inner wall of the sliding frame 4022. The sliding frame 4022 is slidably connected to the surface of the plug piece 4023 through the limiting block 4024. When pulling the plug piece 4023, it is easy to over-pull and cause disengagement. At this time, through the limitation of the limiting block 4024, the plug piece 4023 will not be over-pulled and damaged.

[0041] When the tunnel primary support concrete flatness control device of the present utility model is in use:

[0042] When the nozzle 5 is fixedly installed with the casing 2 after spraying the cement slurry, the nozzle 5 is inserted into the casing 2 at this time, and then the insertion rod 302 passes through the fitting block 303 and the nozzle 5 for connection. One end of the insertion rod 302 is provided with a jack 305, and a locking rod 304 is slidably connected to the inner wall of the jack 305. The locking rod 304 can prevent the insertion rod 302 from being pulled back and prevent the insertion rod 302 from detaching. Then, the spring 4015 pushes the blocking block 4013 to block the pin piece 4012, so that the locking rod 304 cannot be pulled out, realizing fixation. Through the mutual insertion and splicing of multiple insertion rods 302 with the stabilizing block 306 and the fitting block 303, a tight connection is achieved, making the device more stable and not prone to loosening and shaking during installation. When disassembly and unlocking are required, the pull ring 4017 can be pulled at this time. Then, the pull ring 4017 drives the pull rod 4016 and the blocking block 4013 to rise. The blocking block 4013 no longer blocks the pin piece 4012, and at this time, the pin piece 4012 can be conveniently and quickly pulled out for detachment. When disassembling through this device, it is rather troublesome to continuously pull the pull ring 4017. At this time, after the blocking block 4013 rises, the insertion piece 4023 enters the slot 4021. At this time, the blocking block 4013 cannot descend, and the pin piece 4012 can be conveniently disassembled. At this time, rapid installation and connection are more convenient, and at the same time, the fixation is not prone to loosening and shaking and is more stable. After the installation is completed at this time, the leveling of the arch frame is completed on the ground by the way of manual and mechanical cooperation of this device. At this time, the device has better stability during connection, reducing the shaking when the spraying device drives the scraper 1 to move, increasing the control effect of the spraying device on the scraper 1, making the trimming effect better when leveling and trimming the surface of the arch frame in the tunnel, and increasing the flatness of the surface of the supporting arch frame in the tunnel after trimming by this device.

[0043] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0044] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A tunnel primary support concrete flatness control device, characterized in that: include: A nozzle (5), the surface of the nozzle (5) being slidably connected to a sleeve (2), and a scraper (1) being provided at the upper end of the sleeve (2); A connecting mechanism (3) is arranged on one side of the sleeve (2); The locking mechanism (4) is arranged on one side of the connecting mechanism (3), and comprises an anti-separation component (401) arranged on one side of the connecting mechanism (3), wherein a continuous unlocking component (402) is arranged on one side of the anti-separation component (401).

2. A tunnel primary support concrete flatness control device according to claim 1, characterized in that: The connection mechanism (3) comprises a fitting block (303) arranged in the sleeve (2); a stabilizing block (306) is arranged on the surface of the nozzle (5); the fitting block (303) fits with the side end of the stabilizing block (306); an insertion rod (302) is slidably connected in the sleeve (2); one end of the insertion rod (302) movably passes through the fitting block (303) and extends outward; the insertion rod (302) is slidably connected to the stabilizing block (306); and a baffle (301) is arranged at one end of the insertion rod (302).

3. A tunnel primary support concrete flatness control device according to claim 2, characterized in that: A plug hole (305) is provided at one end of the plug rod (302), and a locking rod (304) is slidably connected in the plug hole (305).

4. A tunnel primary support concrete flatness control device according to claim 3, characterized in that: The anti-separation component (401) comprises a mounting groove (4011) provided at a side end of a locking rod (304), a pin piece (4012) being slidably connected in the mounting groove (4011), a mounting block (4014) being provided at the upper end of the locking rod (304), a spring (4015) being provided on the surface of the mounting block (4014), a blocking block (4013) being provided at one end of the spring (4015), the blocking block (4013) being slidably penetrated through the inner wall of the mounting groove (4011) and extending inwardly, and the blocking block (4013) being slidably fitted to one side of the pin piece (4012).

5. A tunnel primary support concrete flatness control device according to claim 4, characterized in that: The upper end of the blocking block (4013) is provided with a pull rod (4016), the upper end of the pull rod (4016) movably passes through the mounting block (4014) and extends upwards, and the upper end of the pull rod (4016) is provided with a pull ring (4017).

6. A tunnel primary support concrete flatness control device according to claim 4, characterized in that: A slot (4021) is provided at the side end of the blocking block (4013), a sliding frame (4022) is provided at the upper end of the locking rod (304), an inserting piece (4023) is slidably connected inside the sliding frame (4022), and the inserting piece (4023) is movably engaged with the inner wall of the slot (4021).

7. A tunnel primary support concrete flatness control device according to claim 6, characterized in that: A limit block (4024) is provided in the sliding frame (4022), and the sliding frame (4022) is slidably connected to the inserting piece (4023) via the limit block (4024).

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