Self-cleaning tunnel side wall variable-height assembly type steel formwork support

Abstract

The utility model provides a height-variable assembly type steel formwork support for a self-cleaning tunnel side wall, and relates to the technical field of underground engineering construction, the height-variable assembly type steel formwork support comprises a formwork unit, a support unit, a pre-buried anchor rod and an adjusting support, one end of the pre-buried anchor rod is obliquely pre-buried underground, and the other end of the pre-buried anchor rod is connected with one end of the bottom of the support unit; the adjusting support is arranged at the other end of the bottom of the support unit, a brushing mechanism is arranged on the formwork unit, and the brushing mechanism can clean the surface of the formwork unit and brush a release agent. According to the height-variable assembly type steel formwork support for the self-cleaning tunnel side wall, a traditional formwork supporting mode is replaced with the support units, the number of steel pipes needing to be erected and supported is greatly reduced, the formwork fixing mode is simple, convenient and reliable, and for the side wall at any height below 6.7 m, the support units can be used for supporting the side wall. The height of the formwork units can be changed through assembly and disassembly so as to adapt to the design height of the side wall, and therefore the formwork units can be suitable for the engineering condition that the height of the side wall changes continuously, and the application range is wide.

Description

Technical Field

[0001] This utility model relates to the field of underground engineering construction technology, specifically to a self-cleaning tunnel sidewall variable height prefabricated steel formwork support. Background Technology

[0002] We are currently in a golden age for the development and utilization of underground space. With urban land resources scarce and traffic pressure increasing dramatically, the rational development and utilization of urban underground space and its construction into efficient underground transportation projects is one of the effective methods to solve urban road traffic problems. In the construction of urban underground transportation systems, for cast-in-place reinforced concrete structures, adopting advanced, reliable, and economically reasonable formwork that is compatible with local construction scenarios is of great significance for shortening the construction period, ensuring project quality, and reducing overall construction costs.

[0003] However, in the construction of large-scale tunnel structures, ensuring the flatness and verticality of the side walls is difficult; traditional formwork splicing and fixing requires driving in multiple through-wall bolts, consuming a lot of labor; the formwork removal process is cumbersome and leaves holes that affect the overall appearance and quality of the wall; and the formwork turnover rate is low. These are all long-standing problems that have been difficult to overcome in engineering. Moreover, currently, during formwork erection, foreign objects often adhere to the support panels of the formwork, resulting in poor panel flatness. In existing technologies, the panels are often cleaned and release agent is applied manually, which is time-consuming and labor-intensive. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a self-cleaning tunnel sidewall variable height prefabricated steel formwork support, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a self-cleaning tunnel sidewall variable height prefabricated steel formwork support, including a formwork unit, a support unit, pre-embedded anchor rods and an adjusting support. One end of the pre-embedded anchor rod is inclined and pre-embedded underground, and the other end is connected to one end of the bottom of the support unit. The adjusting support is set at the other end of the bottom of the support unit. The formwork unit is provided with a brushing mechanism, which can clean the surface of the formwork unit and apply a release agent.

[0008] Preferably, the template unit includes a bottom template, a middle template, and a top template that are sequentially spliced ​​from bottom to top, and the support unit includes a bottom support, a middle support, and a top support that are sequentially spliced ​​from bottom to top. The bottom support, the middle support, and the top support are connected to the bottom template, the middle template, and the top template one by one through connecting fasteners.

[0009] Preferably, the coating mechanism includes a cleaning roller, a carrier, a rotating arm, and a motor. The bottom template and the middle template have vertically connected slides on both sides. A rack is provided in the slide along its length. A gear that meshes with the rack is rotatably connected to the carrier. The two ends of the cleaning roller are rotatably connected to the carrier through the rotating arm. The motor is mounted on the carrier and connected to the rotating shaft of the rotating arm. A drive motor connected to the gear is mounted on the carrier. The cleaning roller corresponds to the panel of the bottom template and the middle template.

[0010] Preferably, the top template is provided with a plurality of nozzles at equal intervals in the horizontal direction, the nozzles facing the panel side of the bottom template and the middle template, and the nozzles are connected to a water source or a release agent source via a pump.

[0011] Preferably, the bottom template and the middle template are provided with guide rails along their length in the slide rails, and the carrier is provided with guide blocks that are adapted to slide with the guide rails.

[0012] Preferably, the bottom of the bottom template is provided with a storage groove. When the carrier moves to the bottom of the bottom template, the rotating arm can drive the cleaning roller to rotate into the storage groove.

[0013] (III) Beneficial Effects

[0014] This utility model provides a self-cleaning tunnel sidewall variable height prefabricated steel formwork support. It has the following beneficial effects:

[0015] 1. This self-cleaning tunnel sidewall variable height prefabricated steel formwork support uses support units to replace the traditional formwork support method, which greatly reduces the number of steel pipes required for support and makes the formwork fixing method simple and reliable. For sidewalls of any height below 6.7m, the formwork unit can be assembled and disassembled to change its height to adapt to the design height of the sidewall. Therefore, the formwork unit is suitable for engineering conditions where the height of the sidewall is constantly changing, and has a wide range of applications.

[0016] 2. The self-cleaning tunnel sidewall variable height prefabricated steel formwork support uses a cleaning roller to clean the support panel of the formwork unit and apply release agent before formwork erection, which is highly efficient. After the application is completed, the cleaning roller is stored in the storage groove by the rotating arm, which avoids the cleaning roller from affecting the support of the formwork unit. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the support structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the template unit of this utility model;

[0019] Figure 3This is a schematic diagram of the bottom template of this utility model;

[0020] Figure 4 This is a schematic diagram of the storage slot of this utility model.

[0021] In the diagram: 1 Template unit, 2 Support unit, 3 Painting mechanism, 4 Sprayer head, 5 Storage slot, 6 Positioning hole, 7 Positioning column, 11 Bottom template, 12 Middle template, 13 Top template, 14 Connecting fastener, 21 Bottom support, 22 Middle support, 23 Top support, 24 Adjustable support, 25 Embedded anchor rod, 31 Cleaning roller, 32 Carrier, 33 Rotating arm, 34 Motor, 35 Slide rail, 36 Rack, 37 Gear, 38 Guide rail. Detailed Implementation

[0022] This utility model embodiment provides a self-cleaning tunnel sidewall variable height prefabricated steel formwork support, such as... Figure 1-4 As shown, it includes template unit 1, support unit 2, pre-embedded anchor rod 25 and adjusting support 24.

[0023] During foundation construction, the pre-embedded anchor rod 25 is pre-embedded at a predetermined location. The other end extends out of the ground and is used to connect to one end of the bottom of the support unit 2. A nut is pivotally connected at the bottom of the support unit 2. The end of the pre-embedded anchor rod 25 is a screw rod, which is threadedly connected to the pre-embedded anchor rod 25 using the nut at the bottom of the support unit 2.

[0024] An adjusting support 24 is located at the other end of the bottom of the support unit 2. The adjusting support 24 includes a disc, a movable rod is fixedly connected to the top of the disc, and a sleeve is connected to the movable rod. The movable rod is limited to moving within the sleeve, and a pressure rod is movably connected to the end of the sleeve away from the movable rod. The pressure rod is threadedly connected to the sleeve. By pressing the movable rod with the pressure rod, the movable rod presses against the disc. At this time, the disc presses against the ground, thus achieving the effect of the adjusting support 24 supporting the support unit 2.

[0025] The aforementioned pre-embedded anchor rod 25 and adjusting support 24 are both existing technologies.

[0026] The innovation of this application lies in the fact that a brushing mechanism 3 is provided on the template unit 1, which can clean the surface of the template unit 1 and apply a release agent.

[0027] like Figure 2 As shown, template unit 1 includes a bottom template 11, a middle template 12, and a top template 13, which are sequentially assembled from bottom to top. There can be several middle templates 12, depending on the required support height. The top of the bottom template 11 and the middle template 12 are provided with positioning holes 6, and the bottom of the middle template 12 and the top template 13 are provided with positioning posts 7 that are adapted to the positioning holes 6. The upper middle template 12 and the upper top template 11 are connected to the lower bottom template 11 and the lower middle template 12 through the positioning posts 7 and the positioning holes 6.

[0028] Support unit 2 includes a bottom support 21, a middle support 22, and a top support 23, which are assembled sequentially from bottom to top. There can be several middle supports 22, depending on the required formwork height. The bottom support 21, middle support 22, and top support 23 are connected by bolts.

[0029] The bottom support 21, the middle support 22, and the top support 23 are connected to the bottom template 11, the middle template 12, and the top template 13 respectively via connecting fasteners 14. The connecting fasteners 14 are commercially available products.

[0030] Each sidewall formwork panel is 2.0m wide, and up to three middle formwork panels 12 can be stacked in the vertical direction to achieve a total formwork height of 6.7m. Support unit 2 is supported by a bottom support 21, a middle support 22, and a top support 23. When only one middle formwork panel 12 is assembled, the formwork height can reach 4.5m; support unit 2 is supported by the bottom support 21 and the top support 23. The bottom support 21, middle support 22, and top support 23 fit together seamlessly.

[0031] like Figure 2-4 As shown, the coating mechanism 3 includes a cleaning roller 31, a carrier 32, a rotating arm 33, and a motor 34. Vertically connected slides 35 are provided on both sides of the bottom template 11 and the middle template 12. A rack 36 is arranged along the length of each slide 35. When the bottom template 11 and the middle template 12 are assembled, the slides 35 can be sequentially connected, and the racks 36 within the multiple slides 35 can also be connected vertically. A gear 37 that meshes with the rack 36 is rotatably connected to the carrier 32. The two ends of the cleaning roller 31 are rotatably connected to the carrier 32 via the rotating arm 33. The motor 34 is mounted on the carrier 32 and connected to the rotating shaft of the rotating arm 33. A drive motor connected to the gear 37 is mounted on the carrier 32. The cleaning roller 31 corresponds to the panels of the bottom template 11 and the middle template 12. Guide rails 38 are provided along the length of each slide 35 in the bottom template 11 and the middle template 12. Guide blocks that slide and adapt to the guide rails 38 are mounted on the carrier 32. When the drive motor drives the gear 37 to rotate, the gear 37 moves up and down along the length of the rack 37, thereby driving the carrier 32 to move up and down. The motor 34 drives the rotating arm 33 to make the cleaning roller 31 completely fit against the panel of the template.

[0032] The top template 13 is horizontally and evenly spaced with several nozzles 4, each facing the panel of the bottom template 11 and the middle template 12. The nozzles 4 are connected to a water source or a release agent source via a pump. The nozzles 4 are embedded within the top template 13, with their ends flush with the panel surface of the top template 13. A water tank or release agent solution tank can be installed on the support unit 2, connected in parallel to the pump via a hose and controlled by a switching valve. When panel cleaning is required, the switching valve switches to the water tank, and water is sprayed from the nozzles 4, falling from top to bottom onto the panel surfaces of the middle template 12 and the bottom template 11. Then, the cleaning roller 31 moves upward to clean the panel surfaces of the middle template 12 and the bottom template 11.

[0033] like Figure 4 As shown, a storage groove 5 is provided at the bottom of the bottom template 13. When the carrier 32 moves to the bottom of the bottom template 11, the rotating arm 33 can drive the cleaning roller 31 to rotate into the storage groove 5. After the coating is completed, the cleaning roller 31 is stored in the storage groove 5 under the drive of the rotating arm 33, so as to avoid the cleaning roller 31 affecting the support of the template unit 1.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning tunnel sidewall variable height prefabricated steel formwork support, comprising a formwork unit (1), a support unit (2), pre-embedded anchor rods (25), and an adjusting support (24), wherein one end of the pre-embedded anchor rod (25) is inclinedly embedded in the ground, and the other end is connected to one end of the bottom of the support unit (2), and the adjusting support (24) is provided at the other end of the bottom of the support unit (2), characterized in that: The template unit (1) is provided with a brushing mechanism (3), which can clean the surface of the template unit (1) and apply a release agent.

2. The self-cleaning tunnel sidewall variable height prefabricated steel formwork support according to claim 1, characterized in that: The template unit (1) includes a bottom template (11), a middle template (12), and a top template (13) that are spliced ​​together from bottom to top. The support unit (2) includes a bottom support (21), a middle support (22), and a top support (23) that are spliced ​​together from bottom to top. The bottom support (21), the middle support (22), and the top support (23) are connected to the bottom template (11), the middle template (12), and the top template (13) one by one through connecting fasteners (14).

3. The self-cleaning tunnel sidewall variable height prefabricated steel formwork support according to claim 2, characterized in that: The coating mechanism (3) includes a cleaning roller (31), a carrier (32), a rotating arm (33), and a motor (34). The bottom template (11) and the middle template (12) are vertically connected by sequentially connected slides (35). A rack (36) is provided in the slide (35) along its length. A gear (37) that meshes with the rack (36) is rotatably connected to the carrier (32). The two ends of the cleaning roller (31) are rotatably connected to the carrier (32) through the rotating arm (33). The motor (34) is set on the carrier (32) and connected to the rotating shaft of the rotating arm (33). A drive motor connected to the gear (37) is set on the carrier (32). The cleaning roller (31) corresponds to the panel of the bottom template (11) and the middle template (12).

4. The self-cleaning tunnel sidewall variable height prefabricated steel formwork support according to claim 3, characterized in that: The top template (13) is provided with several nozzles (4) at equal intervals in the horizontal direction. The nozzles (4) face the panel side of the bottom template (11) and the middle template (12). The nozzles (4) are connected to a water source or a release agent source through a pump.

5. The self-cleaning tunnel sidewall variable height prefabricated steel formwork support according to claim 3, characterized in that: The bottom template (11) and the middle template (12) have guide rails (38) arranged along their length in the slide rails (35), and the carrier (32) has guide blocks that are adapted to slide with the guide rails (38).

6. The self-cleaning tunnel sidewall variable height prefabricated steel formwork support according to claim 3, characterized in that: The bottom template (11) has a storage groove (5) at its bottom. When the carrier (32) moves to the bottom of the bottom template (11), the rotating arm (33) can drive the cleaning roller (31) to rotate into the storage groove (5).

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