Cylindrical pier steel template flatness detection tool

Abstract

The utility model provides a tool for detecting the flatness of a cylindrical pier steel template, and belongs to the technical field of steel template detection equipment. Comprising a detection rod set and two fixed rod sets, each fixed rod set comprises a first fixed rod and two first movable rods, the middles of the two fixed rod sets are hinged to each other, and the two first movable rods are coaxially arranged at the two ends of the first fixed rod in a sliding and penetrating mode respectively; the detection rod group comprises a second fixed rod, a second movable rod and a flatness detection meter, one end of the second fixed rod is hinged to the middle of any first connecting block, the second movable rod is coaxially and slidably arranged at the end, away from the hinge shaft, of the second fixed rod in a penetrating mode, and the flatness detection meter is used for abutting against the inner wall of the cylindrical pier steel formwork. The two fixing rod sets in the tool are rotated to be perpendicular to each other and fixed in the cylindrical pier steel formwork, the detection rod set is rotated by one circle, the flatness detector moves by one circle around the cylindrical pier steel formwork, detection of the flatness of the inner wall of the cylindrical pier steel formwork can be completed, and the effect of improving the detection efficiency is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of steel formwork testing equipment, and in particular to a tool for testing the flatness of cylindrical pier steel formwork. Background Technology

[0002] In the substructure of bridge engineering, cast-in-place concrete piers are generally used to bear the load of the superstructure, and the cross-section of these piers is mostly circular. When pouring concrete for circular piers, a large number of cylindrical steel formworks are often required to facilitate the concrete pouring and shaping. The flatness requirements for the splicing of cylindrical steel formwork are relatively high during use. Uneven splicing of cylindrical steel formwork will lead to uneven concrete formation at the formwork joints, thus affecting the use of the pier. Formwork is prone to deformation during repeated use, increasing the cost of replacing it with new formwork, and continued use may lead to the steel formwork failing to meet the requirements. Therefore, it is often necessary to check the flatness of the cylindrical steel formwork.

[0003] Patent CN221571360U discloses an auxiliary tool for testing the flatness of cylindrical pier steel formwork, comprising: a vertical slide groove, a horizontal slide groove vertically connected to the vertical slide groove with an offset vertical position, a vertical ruler body slidably connected to the vertical slide groove, a horizontal ruler body slidably connected to the horizontal slide groove, an elastic strip, and a linkage gear; one side of the vertical and horizontal ruler bodies is provided with teeth, and the linkage gear meshes with the teeth on one side of the vertical and horizontal ruler bodies, so that the vertical and horizontal ruler bodies can slide outwards synchronously along the vertical and horizontal directions respectively; one end of the elastic strip is fixedly connected to the outer end of the horizontal ruler body, and the other end is detachably slidably connected to the outer end of the vertical ruler body, so that the elastic strip bends into an arc curve under the constraint of the outer ends of the horizontal and vertical ruler bodies.

[0004] However, the device can only perform flatness checks on a portion of the steel template around the circumference at a time, resulting in low efficiency. Furthermore, the tool needs to be repositioned after each check, which can easily lead to problems. Utility Model Content

[0005] In view of the above problems, this utility model provides a tool for detecting the flatness of cylindrical pier steel formwork.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0007] A tool for testing the flatness of steel formwork for cylindrical piers is provided, comprising a testing rod assembly and two fixed rod assemblies. The fixed rod assembly includes a first fixed rod and two first movable rods. A first connecting block is provided in the middle of the first fixed rod. The two first connecting blocks in the two fixed rod assemblies are hinged to each other. The two first movable rods are slidably passed through the two ends of the first fixed rod, respectively. A first limiting member is provided on the first fixed rod to restrict the movement of the two first movable rods.

[0008] The detection rod assembly includes a second fixed rod, a second movable rod, and a flatness tester. One end of the second fixed rod is hinged to the middle of any first connecting block. The second movable rod is slidably coaxially inserted through the end of the second fixed rod away from the hinge axis. A second limiting member is provided on the second fixed rod to restrict the movement of the second movable rod. The flatness tester is installed on the second movable rod to abut against the inner wall of the cylindrical pier steel formwork.

[0009] Furthermore, the first limiting member includes a first adjusting screw, which is coaxially rotatably disposed inside the first fixed rod. The first adjusting screw is threaded through one end of the first movable rod, and the first fixed rod 21 is provided with a first driving member for driving the first adjusting screw to rotate.

[0010] The second limiting component includes a first limiting bolt, which is threaded onto the second fixed rod. After passing through the second fixed rod, the first limiting bolt abuts against the outer wall of the second movable rod.

[0011] Furthermore, the first adjusting screw is a bidirectional screw, and the first driving component includes a first adjusting head. The two ends of the first adjusting screw are respectively threaded to two first movable rods. The first adjusting head is rotatably mounted on the first connecting block, and one end of the first adjusting head extends into the first connecting block and is driven by the first adjusting screw through a bevel gear.

[0012] Furthermore, an abutment block for abutting against the inner wall of the cylindrical pier steel formwork is fixedly provided at the end of the first movable rod away from the first fixed rod, and a second connecting block is fixedly provided at the end of the second movable rod away from the second fixed rod. The abutment block is provided with an elastic limiting member for restricting the second connecting block from disengaging from the connecting groove.

[0013] Furthermore, the flatness gauge is slidably mounted on the second connecting block along the axial direction of the second movable rod, and the second connecting block is provided with a second limiting bolt for restricting the movement of the flatness gauge.

[0014] Furthermore, a spirit level is provided on the first connecting block.

[0015] Furthermore, each of the first and second movable rods has scale lines on its outer wall along its length.

[0016] The beneficial effects of this utility model are as follows: When testing the flatness of the inner wall of the cylindrical pier steel formwork, the two fixed rod groups in the tool are rotated to be perpendicular to each other, and then the length of the two fixed rods is extended so that the two fixed rod groups are fixed inside the cylindrical pier steel formwork in a cross-shaped coaxial manner. The length of the testing rod group is adjusted until the testing end of the flatness tester contacts the inner wall of the cylindrical pier steel formwork. The testing personnel rotate the testing rod group one revolution, so that the flatness tester moves one revolution around the cylindrical pier steel formwork, thus completing the test of the flatness of the inner wall of the cylindrical pier steel formwork. The testing efficiency is high and the installation is convenient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the flatness testing tool installed inside the steel formwork of the cylindrical pier, according to an embodiment of this application.

[0018] Figure 2 This is a schematic diagram of the overall structure of the flatness testing tool in its stored state according to an embodiment of this application.

[0019] Figure 3 This is a partial cross-sectional view of the fixed rod assembly according to an embodiment of this application.

[0020] The components include: 1. Detection rod assembly; 11. Second fixed rod; 12. Second movable rod; 13. Flatness gauge; 14. First limiting bolt; 15. Second connecting block; 16. Second limiting bolt; 2. Fixed rod assembly; 21. First fixed rod; 22. First movable rod; 23. First connecting block; 24. First adjusting screw; 25. First adjusting head; 26. Abutment block; 27. Connecting groove; 28. Elastic limiting component; 3. Spirit bubble; 4. Scale line. Detailed Implementation

[0021] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0022] This application discloses a tool for detecting the flatness of steel formwork for cylindrical piers, referring to... Figure 1 It includes a detection rod group 1 and two fixed rod groups 2. The middle parts of the two fixed rod groups 2 are hinged to each other, and one end of the detection rod group 1 is coaxially hinged to the middle part of the two fixed rod groups 2.

[0023] Reference Figure 2 and Figure 3The fixed rod assembly 2 includes a first fixed rod 21 and two first movable rods 22. A first connecting block 23 is integrally fixed to the middle of the first fixed rod 21. The two first fixed rods 21 in the two fixed rod assemblies 2 are hinged to each other through the two first connecting blocks 23. The first fixed rod 21 is coaxially connected inside. The two first movable rods 22 are respectively coaxially slidably inserted through both ends of the first fixed rod 21. A first limiting member is provided on the first fixed rod 21 to limit the movement of the two first movable rods 22 relative to the first fixed rod 21.

[0024] The detection rod assembly 1 includes a second fixed rod 11, a second movable rod 12, and a flatness tester 13. One end of the second fixed rod 11 is coaxially hinged to the hinge shaft on any of the first connecting blocks 23. The end of the second fixed rod 11 away from its own hinge shaft is coaxially provided with a slot for the second movable rod 12 to be inserted and slid. The second movable rod 12 is coaxially slidably passed through the end of the second fixed rod 11 away from the hinge shaft. The second fixed rod 11 is provided with a second limiting member for restricting the movement of the second movable rod 12. The flatness tester 13 is provided on the second movable rod 12 for abutting against the inner wall of the cylindrical pier steel formwork.

[0025] During operation, the tool is placed inside the cylindrical pier steel formwork to be inspected. The two sets of fixed rods 2 are rotated to form a cross. Then, the first movable rods 22 in the two sets of fixed rods 2 are extended out relative to the first fixed rod 21 with equal length, so that the first fixed rod 21 abuts against the inner wall of the cylindrical pier steel formwork, thereby concentrically fixing the tool inside the cylindrical pier steel formwork. At this time, the movable end of the detection rod set 1 is rotated around the cylindrical pier steel formwork for one revolution, so that the flatness tester 13 can inspect the inner wall of the cylindrical pier steel formwork.

[0026] Specifically, the first limiting component includes a first adjusting screw 24, which is coaxially rotatably mounted within the first fixed section. A gap is formed between the first adjusting screw 24 and the first fixed rod 21 for the passage of the first movable rod 22. The end of the first movable rod 22 near the first connecting block 23 has a threaded hole adapted to the first adjusting screw 24. The first adjusting screw 24 and the first movable rod 22 are threaded together. A first driving component for driving the first adjusting screw 24 to rotate is provided on the first fixed rod 21. By rotating the adjusting screw, the first movable rod 22 can extend accurately to a certain length relative to the first fixed rod 21, and after the first fixed rod 21 abuts against the inner wall of the cylindrical pier steel formwork, the retraction of the first fixed rod 21 is restricted, thereby improving the stability between the first movable rod 22 and the first fixed rod 21.

[0027] Furthermore, the first adjusting screw 24 can be designed as a bidirectional screw, with both ends extending into the first fixed rods 21 on both sides of the first connecting block 23. Two first movable rods 22 are threaded onto the threaded sections on both sides of the first adjusting screw 24. The first driving component includes a first adjusting head 25, which is rotatably connected to the first connecting block 23. One end of the first adjusting head 25 facing outwards from the first connecting block 23 has a hexagonal slot for connecting a hexagonal wrench. One end of the first adjusting head 25 extending into the first connecting block 23 is coaxially connected to a bevel gear. The portion of the first adjusting screw 24 located within the first connecting block 23 is also coaxially connected to a bevel gear. The first adjusting head 25 is driven by the bevel gears. This design allows the two first movable rods 22 to extend / retract synchronously relative to the first fixed rods 21 when the first adjusting screw head is rotated, improving the concentricity of the tool within the cylindrical pier steel formwork.

[0028] In this embodiment of the application, the second limiting member includes a first limiting bolt 14, which is threadedly connected to the second fixed rod 11. After passing through the second fixed rod 11, the first limiting bolt 14 abuts against the outer wall of the second movable rod 12. By tightening / loosening the first limiting bolt 14, the second movable rod 12 in the second fixed rod 11 can be fixed / loosened.

[0029] Furthermore, an abutment block 26 for abutting against the inner wall of the cylindrical pier steel formwork is fixedly provided at the end of the first movable rod 22 away from the first fixed rod 21. The end of the abutment block 26 away from the first movable rod 22 can be designed as an arc surface, so that when the first movable rod 22 abuts against the inner wall of the cylindrical pier steel formwork, the abutment block 26 abuts against the cylindrical pier steel formwork, which is applicable to cylindrical pier steel formwork of different sizes.

[0030] Furthermore, a second connecting block 15 is fixedly installed at the end of the second movable rod 12 away from the second fixed rod 11. An abutment block 26 is provided with an opening allowing the second connecting block 15 to rotate and embed into a connecting groove 27. An elastic limiting member 28 is provided on the abutment block 26 to prevent the second connecting block 15 from disengaging from the connecting groove 27. When adjusting the length of the fixed rod assembly 2, the detection rod assembly 1 and the fixed rod assembly 2 are kept parallel, and the second connecting block 15 cooperates with the first connecting block 23. The second limiting member limiting the second movable rod 12 is then loosened. This allows the first movable rod 22 to move relative to the first fixed rod 21 while simultaneously moving the second movable rod 12 relative to the second fixed rod 11. After the first movable rod 22 is in position, the second movable rod 12 is fixed, thus ensuring that the second movable rod 12 and the first movable rod 22 extend and retract synchronously by the same length, improving tool adjustment efficiency.

[0031] In this embodiment, the elastic limiting member 28 can be a ball spring. The ball spring is disposed on the inner wall of the connecting groove 27. The second connecting block 15 is provided with a limiting groove for the ball spring to cooperate with, which can simply limit the second connecting block 15 and prevent the second connecting block 15 from coming out of the connecting groove 27 during the adjustment of the first movable rod 22. This improves the adjustment convenience of the second movable rod 12 and also improves the stability of the second movable rod 12 during the movement.

[0032] Each of the first movable rod 22 and each of the second movable rods 12 has a scale line 4 along its length on its outer wall. By observing the scale line 4, the length of the first movable rod 22 or the second movable rod 12 extending beyond the first fixed rod 21 or the second movable rod 12 can be visually viewed. The scale line 4 can also be marked as the diameter of the cylindrical pier steel template that the tool is currently matching, making it convenient for the inspector to take readings.

[0033] Furthermore, in order to ensure the coaxiality of the tool installation inside the cylindrical pier steel formwork, a level bubble 3 can be installed on the first connecting block 23. By observing the level bubble 3, it can be determined whether the tool is coaxially installed with the cylindrical pier steel formwork after the two sets of fixing rods 2 are fixed inside the cylindrical pier steel formwork.

[0034] Furthermore, a strip-shaped hole is provided parallel to the length direction of the detection rod assembly 1 on the second connecting block 15 of the detection rod assembly 1. A connecting flange is fixed on the flatness gauge 13, and a through hole is provided on the connecting flange. The flatness gauge 13 is connected to the second connecting block 15 by a second limiting bolt 16. Specifically, the second limiting bolt 16 passes through the through hole and the strip-shaped hole and is threaded to a nut. By adjusting the position of the flatness gauge 13 on the second connecting block 15, this tool can be used to detect the flatness of the inner wall steps of the cylindrical pier steel formwork, thus improving the tool's applicability.

[0035] Those skilled in the art will understand that although preferred embodiments of the present invention have been described, those skilled in the art, once they understand the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if these modifications and modifications of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and modifications.

Claims

1. A tool for detecting the flatness of steel formwork for cylindrical piers, characterized in that: The device includes a detection rod assembly (1) and two fixed rod assemblies (2). The fixed rod assembly (2) includes a first fixed rod (21) and two first movable rods (22). A first connecting block (23) is provided in the middle of the first fixed rod (21). The two first connecting blocks (23) in the two fixed rod assemblies (2) are hinged to each other. The two first movable rods (22) are respectively slidably passed through the two ends of the first fixed rod (21) on the same axis. A first limiting member is provided on the first fixed rod (21) to limit the movement of the two first movable rods (22). The detection rod assembly (1) includes a second fixed rod (11), a second movable rod (12), and a flatness tester (13). One end of the second fixed rod (11) is hinged to the middle of any first connecting block (23). The second movable rod (12) is coaxially slidably inserted through the end of the second fixed rod (11) away from the hinge axis. A second limiting member is provided on the second fixed rod (11) to restrict the movement of the second movable rod (12). The flatness tester (13) is provided on the second movable rod (12) to abut against the inner wall of the cylindrical pier steel formwork.

2. The flatness testing tool for cylindrical pier steel formwork according to claim 1, characterized in that, The first limiting member includes a first adjusting screw (24), which is coaxially rotatably disposed inside the first fixed rod (21). The first adjusting screw (24) is threaded through one end of the first movable rod (22). The first fixed rod (21) is provided with a first driving member for driving the first adjusting screw (24) to rotate. The second limiting member includes a first limiting bolt (14), which is threadedly connected to the second fixed rod (11). After passing through the second fixed rod (11), the first limiting bolt (14) abuts against the outer wall of the second movable rod (12).

3. The flatness testing tool for cylindrical pier steel formwork according to claim 2, characterized in that, The first adjusting screw (24) is a bidirectional screw, and the first driving component includes a first adjusting head (25). The two ends of the first adjusting screw (24) are respectively threaded to two first movable rods (22). The first adjusting head (25) is rotatably mounted on the first connecting block (23). One end of the first adjusting head (25) extends into the first connecting block (23) and is driven by the first adjusting screw (24) through a bevel gear.

4. The flatness testing tool for cylindrical pier steel formwork according to claim 3, characterized in that, The end of the first movable rod (22) away from the first fixed rod (21) is fixedly provided with an abutment block (26) for abutting against the inner wall of the cylindrical pier steel formwork. The end of the second movable rod (12) away from the second fixed rod (11) is fixedly provided with a second connecting block (15). The abutment block (26) is provided with an elastic limiting member (28) for restricting the second connecting block (15) from disengaging from the connecting groove (27).

5. The flatness testing tool for cylindrical pier steel formwork according to claim 4, characterized in that, The flatness tester (13) is slidably mounted on the second connecting block (15) along the axial direction of the second movable rod (12), and the second connecting block (15) is provided with a second limiting bolt (16) for restricting the movement of the flatness tester (13).

6. A tool for detecting the flatness of cylindrical pier steel formwork according to any one of claims 1 to 5, characterized in that, A level (3) is provided on the first connecting block (23).

7. A tool for detecting the flatness of cylindrical pier steel formwork according to any one of claims 1 to 5, characterized in that, Each of the first movable rod (22) and each of the second movable rods (12) has a scale line (4) on its outer wall along its own length direction.

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