A fixing device for applying waterproof coating to expansion joints of pipe racks

Abstract

This utility model relates to the field of pipe gallery construction technology, specifically a fixing device for applying waterproof coating to the expansion joints of pipe galleries. It includes a frame device and an adjustable handle connected to its lower end. The frame device comprises two parallel, V-shaped square steel bars, connected at their ends and turning points via a main shaft. Rollers are connected to both ends of the main shaft, along with fixing nuts. A lead screw for abutment and limiting is located in the middle of the main shaft. The width of the frame device is adjustable along the main shaft. The frame device coincides with the V-shaped corner of the pipe gallery, and its central axis coincides with the expansion joint during construction. A grout-stopping strip is pasted onto the inner side of the square steel bars. This utility model improves upon the traditional method of manually applying masking tape or transparent adhesive, solving the problem of paint application being uneven and inconsistent, thus improving the surface quality and construction efficiency while reducing labor and material costs.

Description

Technical Field

[0001] This utility model relates to the field of pipe gallery construction technology, specifically a fixing device for applying waterproof coating to the expansion joints of pipe galleries. Background Technology

[0002] During the waterproofing construction of the expansion joints in the utility tunnel, a haunch angle exists within the tunnel, namely... Figure 4 The traditional process involves first cleaning the expansion joint, then having workers use ladders to apply waterproof coating to the joint area and then applying masking tape or transparent tape. Next, the waterproof coating is applied manually, and finally, the masking tape or transparent tape is cleaned off. This method of sealing the area easily leads to safety hazards for workers at heights, insufficient masking tape width, and concrete contamination from the waterproof coating application, significantly reducing the appearance quality of the waterproof coating and increasing related costs. Furthermore, after the coating application, the masking tape and other sealing materials must be cleaned again, potentially causing secondary pollution to the utility tunnel environment and increasing labor and cost expenses.

[0003] Chinese patent [CN216664881U] discloses a waterproof coating application device for building waterproofing projects. This device controls the direction and speed of a remote-controlled vehicle via an external control terminal and a signal receiver, which helps the spray head to spray the coating more evenly on the wall surface. However, this device can only be used for coating and spraying large walls. For the waterproof coating construction within a 10cm area of ​​the expansion joint in this project, it is limited by the spraying area to a certain extent. If the surface quality of the concrete is contaminated during the spraying construction, it will increase the cost of later repairs and increase the construction cost. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides a fixing device for applying waterproof coating to expansion joints in pipe galleries. This device improves the strength, rigidity, and stability of the formwork, enhances the appearance quality of concrete, increases construction efficiency, and reduces construction costs.

[0005] The technical solution adopted by this utility model to achieve the above-mentioned objective is: a fixing device for applying waterproof coating to the expansion joint of a pipe gallery, characterized in that: it includes a frame device and an adjustable handle connected to its lower end; the frame device includes two parallel V-shaped square steels, the ends and turning points of the two square steels are connected by a main shaft; the two ends of the main shaft are connected to rollers and fixing nuts; the middle part of the main shaft is a lead screw for abutting and limiting; the width of the frame device can be adjusted along the main shaft; the frame device coincides with the V-shaped corner of the pipe gallery, and the central axis coincides with the expansion joint during construction; and a grout-stopping strip is pasted on the inner side of the square steel.

[0006] The adjustable grip is connected to the frame device via galvanized angle steel. The lead screw is made of φ12 round steel with a maximum extension length of 20cm. The corner position can be completely fitted, and the coating is completed in one roll.

[0007] The galvanized angle steel is 10cm long, and the adjustable handle is a 1m long aluminum rod, which are bolted together.

[0008] The square steel has a side length of 4cm*4cm, the roller diameter is 3cm*3cm, and the interval between the two square steels is 10-20cm.

[0009] The distance between the roller and the concrete surface of the expansion joint is the same as the distance between the square steel and the concrete surface. The grout-stopping strip is 3cm wide and 3mm thick to prevent paint from overflowing during painting and contaminating the concrete wall surface outside the painting area, thereby affecting the appearance quality.

[0010] The straight section of the fixing device has a single-stroke coating length of 50cm.

[0011] This utility model proposes a fixing device for applying waterproof coating to expansion joints in utility tunnels. It comprises a frame assembly and roller sliding devices at the four corners of the bottom. The frame is connected to the four corner pulleys via a steel main shaft. The bottom of the frame assembly is limited by a limiting screw on the pulley main shaft. The width of the frame can be spirally adjusted along the pulley main shaft to achieve the desired coating width, while maintaining alignment with the corner positions of the utility tunnel. The frame is composed of a three-dimensional frame welded along the corner points. This design improves upon the safety hazards associated with personnel climbing ladders during construction, and avoids increasing labor and material costs. Furthermore, it addresses issues such as uneven coating and quality problems caused by inadequate cleaning of expansion joints, insufficient masking tape width, or peeling transparent adhesive. Additionally, during dismantling, personnel handling can cause secondary pollution of the utility tunnel environment, increasing cleaning costs. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is a side view of the present invention; Figure 4 A schematic diagram showing the location of the V-shaped corner of the expansion joint in the utility tunnel; In the diagram: 1-square steel, 2-slurry stop strip, 3-lead screw, 4-galvanized angle steel, 5-adjustable handle, 6-roller, 7-fixing nut, 8-figure-eight position. Detailed Implementation

[0013] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0014] Example 1

[0015] like Figures 1-3 As shown, a fixing device for applying waterproof coating to the expansion joint of a pipe gallery includes a frame device and an adjustable handle 5 connected to its lower end. The frame device includes two parallel V-shaped square steel bars 1. The ends and turning points of the two square steel bars 1 are connected by a main shaft. The two ends of the main shaft are connected to rollers 6 and fixing nuts 7. The middle part of the main shaft is a screw 3 for abutting and limiting. The width of the frame device can be adjusted along the main shaft. The frame device coincides with the V-shaped corner position 8 of the pipe gallery, and the central axis coincides with the expansion joint during construction. A grout-stopping strip 2 is pasted on the inner side of the square steel bars 1.

[0016] The adjustable grip 5 is connected to the frame device via galvanized angle steel 4. The lead screw 3 is made of φ12 round steel with a maximum extension length of 20cm. The 8-shaped corner position can be fully fitted, and the coating is completed in one roll.

[0017] The galvanized angle steel 4 is 10cm long, and the adjustable grip rod 5 is a 1m long aluminum rod, which are bolted together.

[0018] The square steel 1 has a side length of 4cm*4cm, the roller 6 has a diameter of 3cm*3cm, and the interval between the two square steels 1 is 10-20cm.

[0019] The distance between the roller 6 and the concrete surface of the expansion joint is the same as the distance between the square steel 1 and the concrete surface. The grout-stopping strip 2 is 3cm wide and 3mm thick to prevent paint from overflowing and contaminating the concrete wall outside the painting area when applying the paint, thereby affecting the appearance quality.

[0020] The straight section of the fixing device has a single-stroke coating length of 50cm.

[0021] Example 2

[0022] The application conditions of the device described in Example 1 are as follows: the pipe gallery structure is rectangular, and the four corner points are designed with the following... Figure 4 As shown, the 20cm x 20cm figure-eight angle has a hypotenuse of approximately 28cm.

[0023] In use, construction is carried out clockwise from bottom to top according to the cross-sectional dimensions of the construction pipe gallery. The adjustable handle 5 is moved along the expansion joint of the pipe gallery. After each length of the device is coated, it is moved upward once more until it reaches the V-shaped corner position and coincides with the device. Then, the fixed device is turned around to coincide with the V-shaped corner position 8, and the device is moved in the opposite direction to the next V-shaped corner position 8. This process of turning the direction and moving the device is repeated to complete the coating of waterproof paint around the expansion joint. This greatly reduces the construction cost of using masking tape or transparent tape.

[0024] 1. In terms of efficiency, the original method of manually applying masking tape or transparent tape with the help of ladders to construct an expansion joint used 2 hours or more. Now, using waterproof coating fixing devices, it can be completed in 1 hour, saving half the time and shortening the construction period by 50% or more.

[0025] 2. From an economic perspective, preliminary calculations indicate that approximately 500 expansion joints in the utility tunnel require painting (mostly double-compartment and triple-compartment joints). Each double-compartment joint is calculated to be 15.4 + 12.6 = 28m long. Assuming the price of 1m of 3mm masking tape is approximately 25 yuan, the total savings in labor and material costs would be approximately 500 * 28 / 3 * 0.55 * 2 + 300 * 50 = 20133 yuan.

[0026] 3. From a safety perspective, it can effectively avoid the safety hazards of workers climbing ladders to work at heights, and prevent unnecessary safety accidents such as falls from heights and being struck by objects.

[0027] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A fixing device for applying waterproof coating to expansion joints of pipe racks, characterized in that: The device includes a frame assembly and an adjustable handle connected to its lower end. The frame assembly comprises two parallel V-shaped square steel bars, the ends and turning points of which are connected by a main shaft. Rollers are connected to both ends of the main shaft and fixed nuts are also connected. The middle part of the main shaft is a lead screw for abutting and limiting. The width of the frame assembly can be adjusted along the main shaft. The frame assembly coincides with the V-shaped corner of the pipe gallery, and the central axis coincides with the expansion joint during construction. Grouting strips are attached to the inner side of the square steel bars.

2. The fixing device for coating waterproofing material on the deformation joint of pipe gallery according to claim 1, characterized in that: The adjustable grip bar is connected to the frame device via galvanized angle steel, and the lead screw is made of φ12 round steel with a maximum extension length of 20cm.

3. The fixing device for painting waterproof coating on the deformation joint of pipe gallery according to claim 2, characterized in that: The galvanized angle steel is 10cm long, and the adjustable handle is a 1m long aluminum rod, which are bolted together.

4. The fixing device for coating waterproofing material on the deformation joint of pipe gallery according to claim 1, characterized in that: The square steel has a side length of 4cm*4cm, the roller diameter is 3cm*3cm, and the interval between the two square steels is 10-20cm.

5. The fixing device for applying waterproof coating to the expansion joint of a pipe gallery according to claim 1, characterized in that: The distance between the roller and the concrete surface of the expansion joint is the same as the distance between the square steel and the concrete surface. The grout stop strip is 3cm wide and 3mm thick.

6. The fixing device for coating waterproofing material on the deformation joint of pipe gallery according to any one of claims 1 to 5, characterized in that: The straight section of the fixing device has a single-stroke coating length of 50cm.

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