Expansion joint width gauge for bridge detection
Through the meshing connection of the screw, worm, worm wheel and gear, accurate measurement of the depth of the bridge expansion joint is achieved, which solves the problem of inaccurate measurement in the existing technology and improves the measurement accuracy.
Patent Information
- Application Number
- CN202422901522.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing expansion joint width gauges used for bridge inspection cannot accurately measure the depth of expansion joints, resulting in inaccurate overall gap values.
A bridge expansion joint width gauge was designed. The movement and rotation of the measuring ruler were achieved through the meshing connection of a screw, a worm, a worm wheel and a gear, and the depth of the bridge expansion joint could be measured accurately.
The measurement accuracy of the expansion joint depth of the bridge is improved, and the accuracy of the measured values is ensured.
Smart Images
Figure CN223319705U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of bridge detection, in particular to an expansion joint width measuring instrument for bridge detection. Background Art
[0002] Bridge expansion joint: refers to the expansion joint set between the two beam ends, between the beam ends and the abutments, or at the hinged position of the bridge to meet the requirements of bridge deck deformation.
[0003] The existing patent CN220083870U discloses an expansion joint width gauge for bridge inspection. First, the level ruler is connected to the ruler sleeve through a first bolt. When measuring the expansion joint of the bridge, the ruler sleeve is first placed on the bridge, and the level ruler is used to detect the levelness between the bridges. After the levelness meets the standard, the expansion joint of the bridge is measured by the ruler sleeve and the scale set on the surface of the telescopic ruler. If the length of the ruler sleeve is not enough during the measurement process, the telescopic ruler auxiliary ruler sleeve can be manually pulled out to measure the bridge. When the telescopic ruler is pulled to a certain length, the ruler sleeve can be manually pulled out to measure the bridge. After determining the position, manually tighten the limit screw to limit the position between the telescopic ruler and the ruler sleeve. Secondly, when it is necessary to measure the position below the expansion joint of the bridge, the switch of the electric lifting sleeve can be turned on, so that the lifting sleeve inside the electric lifting sleeve drives the lifting rod to lift and lower, and the lifting rod drives the entire measuring ruler to descend, so as to measure the internal spacing of the bridge expansion joint. After the measurement is completed, the switch of the electric lifting sleeve is turned off, the measuring ruler is taken out, and the measured data is recorded. The electric lifting sleeve thus completes the use process of an expansion joint width gauge for bridge inspection.
[0004] During use of existing devices, measurements are usually made at the edges of the expansion joints, but the depth of the expansion joints cannot be measured, resulting in inaccurate overall values of the expansion joint gaps. Utility Model Content
[0005] The purpose of the utility model is to provide an expansion joint width gauge for bridge inspection in order to solve the problem that the depth of the expansion joint cannot be measured, resulting in inaccurate overall numerical value of the expansion joint gap.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a expansion joint width gauge for bridge inspection, comprising a ruler sleeve, a fixed column fixed to one side of the top of the ruler sleeve, which drives the ruler sleeve to move when the fixed column moves, a screw sleeve fixed inside the fixed column, which drives the fixed column to move when the screw sleeve moves, the inner wall of the screw sleeve is meshedly connected with a screw, which drives the screw sleeve to move up and down through the meshing connection when the screw rotates, the outer surface of the screw is meshedly connected with a fixed disk, which drives the fixed disk to rotate when the screw rotates, the outer surface of the fixed disk is provided with a fixed sleeve, and the screw passes through the top of the fixed sleeve.
[0007] As a further solution of the present invention: a telescopic column is fixed in the middle of the top of the ruler sleeve, and when the telescopic column moves, it drives the ruler sleeve to move. A handle is fixed on one side of the telescopic column, and the handle fixes the telescopic column. The handle is located on one side of the fixed sleeve, and the handle fixes the fixed sleeve.
[0008] As a further solution of the present invention: a first T-slot is provided at one end of the inner wall of the ruler sleeve, and the ruler sleeve is fixed to the first T-slot; a second T-slot is provided at the other end of the inner wall of the ruler sleeve, and the ruler sleeve is fixed to the second T-slot; a groove is provided in the middle of one side of the ruler sleeve.
[0009] As a further solution of the present invention: a fixed block is fixed at one end of the telescopic column, the telescopic column fixes the fixed block, a first rotating shaft is fixed inside the fixed block, the fixed block fixes the first rotating shaft, a telescopic rod is fixed on the inner wall of the first rotating shaft, and the first rotating shaft prevents the fixed block from rotating when the telescopic rod rotates.
[0010] As a further solution of the present invention: a rotating block is fixed on the top of the telescopic rod, and the rotating block drives the telescopic rod to rotate when it rotates. A second rotating shaft is fixed on the outer surface of the telescopic rod, and the second rotating shaft prevents the ruler sleeve from rotating when the telescopic rod rotates, and the second rotating shaft is located at the top of the groove. A worm is fixed at the bottom of the telescopic rod, and the worm is driven to rotate when the telescopic rod rotates, and the worm is located inside the groove.
[0011] As a further solution of the present invention: the outer surface of the worm is meshingly connected with a worm wheel, and when the worm rotates, the worm wheel is driven to rotate through the meshing connection. A fixed rod is fixed to one end of the worm wheel, and when the worm wheel rotates, the fixed rod is driven to rotate. A gear is fixed to one side of the fixed rod, and when the fixed rod rotates, the gear is driven to rotate.
[0012] As a further solution of the present invention: the outer surface of the gear is meshingly connected with a toothed plate, and when the gear rotates, the toothed plate is driven to move through the meshing connection; a first T-shaped block is fixed to one end of the toothed plate, and when the toothed plate moves, it drives the first T-shaped block to move, and the first T-shaped block is slidably connected to the first T-shaped slot; a measuring ruler is fixed to the other end of the toothed plate, and when the toothed plate moves, it drives the measuring ruler to move, and the measuring ruler is located inside the ruler sleeve; a second T-shaped block is fixed to one end of the measuring ruler, and when the measuring ruler moves, it drives the second T-shaped block to move, and the second T-shaped block is slidably connected to the second T-shaped slot.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] 1. When the screw is rotated, the screw sleeve is driven to move up and down through the meshing connection. When the screw sleeve moves, the fixed column is moved. When the fixed column moves, the ruler sleeve is moved. When the ruler sleeve moves, the measuring ruler moves. When the measuring ruler moves, it is convenient for the measuring ruler to measure the depth of the bridge expansion joint, thereby improving the accuracy of the integer value.
[0015] 2. By setting the movable block to rotate, the telescopic rod is driven to rotate, the telescopic rod is driven to rotate, the worm is driven to rotate through the meshing connection when the worm is rotated, the worm wheel is driven to rotate through the meshing connection when the worm wheel rotates, the fixed rod is driven to rotate when the worm wheel rotates, the fixed rod is driven to rotate when the gear is rotated, the tooth plate is driven to move through the meshing connection when the gear rotates, and the measuring ruler is driven to move when the tooth plate moves. When the measuring ruler moves, the problem of being unable to measure the depth of the expansion joint is solved. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the overall internal structure of the utility model;
[0018] Figure 3 This is a schematic diagram of the worm and worm gear structure of the present utility model;
[0019] Figure 4 This is a schematic diagram of the ruler sleeve structure of the present utility model.
[0020] In the figure: 1. ruler sleeve; 2. telescopic column; 3. fixed block; 4. first rotating shaft; 5. rotating block; 6. handle; 7. fixed column; 8. telescopic rod; 9. fixed sleeve; 10. measuring ruler; 11. first T-slot; 12. second T-slot; 13. screw; 14. screw sleeve; 15. fixed plate; 16. groove; 17. worm; 18. worm gear; 19. fixed rod; 20. gear; 21. first T-block; 22. tooth plate; 23. second T-block; 24. second rotating shaft. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0022] See also Figure 1 、 2In the embodiment of the present invention, a expansion joint width gauge for bridge inspection includes a ruler sleeve 1. The outer surface of the ruler sleeve 1 is provided with scale values to facilitate the ruler sleeve 1 to measure from the top. A circular groove is opened on the top of the ruler sleeve 1 to facilitate the installation of a worm 17 inside the circular groove. A fixed column 7 is fixed to one side of the top of the ruler sleeve 1. When the fixed column 7 moves, the ruler sleeve 1 is driven to move. A screw sleeve 14 is fixed inside the fixed column 7. When the screw sleeve 14 moves, the fixed column 7 is driven to move. The inner wall of the screw sleeve 14 is meshedly connected with a screw rod 13. When the screw 13 rotates, the screw sleeve 14 is driven up and down by the meshing connection. The outer surface of the screw 13 is meshedly connected with a fixed disk 15. When the screw 13 rotates, the fixed disk 15 is driven to rotate. A fixed sleeve 9 is provided on the outer surface of the fixed disk 15, and the screw 13 passes through the top of the fixed sleeve 9. The fixed disk 15 prevents the screw 13 from falling when it rotates.
[0023] When the screw rod 13 rotates, it drives the screw sleeve 14 to move up and down through the meshing connection. When the screw sleeve 14 moves, it drives the fixing column 7 to move.
[0024] Please refer to Figure 1 、 2 A telescopic column 2 is fixed to the middle of the top of the ruler sleeve 1. When the telescopic column 2 moves, the ruler sleeve 1 is driven to move. A handle 6 is fixed to one side of the telescopic column 2. The handle 6 fixes the telescopic column 2, and the handle 6 is located on one side of the fixed sleeve 9. The handle 6 fixes the fixed sleeve 9. A first T-slot 11 is opened at one end of the inner wall of the ruler sleeve 1, and the ruler sleeve 1 is fixed to the first T-slot 11. A second T-slot 12 is opened at the other end of the inner wall of the ruler sleeve 1, and the ruler sleeve 1 is fixed to the second T-slot 12. A groove 16 is opened in the middle of one side of the ruler sleeve 1, and the ruler sleeve 1 is fixed to the groove 16. The telescopic column 2 and the fixed sleeve 9 are fixed through the handle 6;
[0025] When the telescopic column 2 moves, the ruler sleeve 1 is driven to move as well. The handle 6 fixes the telescopic column 2 , and the handle 6 fixes the fixing sleeve 9 .
[0026] In this embodiment, by rotating the screw 13, the screw 13 drives the screw sleeve 14 to move up and down through the meshing connection. When the screw sleeve 14 moves, it drives the fixed column 7 to move. When the fixed column 7 moves, it drives the ruler sleeve 1 to move. When the ruler sleeve 1 moves, the measuring ruler 10 moves.
[0027] Please refer to Figure 1 、 3A fixed block 3 is fixed to one end of the telescopic column 2, and the telescopic column 2 fixes the fixed block 3. A first rotating shaft 4 is fixed inside the fixed block 3, and the fixed block 3 fixes the first rotating shaft 4. A telescopic rod 8 is fixed to the inner wall of the first rotating shaft 4. The first rotating shaft 4 prevents the fixed block 3 from rotating when the telescopic rod 8 rotates. A rotating block 5 is fixed to the top of the telescopic rod 8. When the rotating block 5 rotates, the telescopic rod 8 is driven to rotate. A second rotating shaft 24 is fixed to the outer surface of the telescopic rod 8. The second rotating shaft 24 prevents the ruler sleeve 1 from rotating when the telescopic rod 8 rotates, and the second rotating shaft 24 is located at the top of the groove 16. A worm 17 is fixed to the bottom of the telescopic rod 8. When the telescopic rod 8 rotates, the worm 17 is driven to rotate, and the worm 17 is located inside the groove 16. The measuring ruler 10 is fixed and self-locked by the meshing connection between the worm 17 and the worm wheel 18;
[0028] The first rotating shaft 4 prevents the fixed block 3 from rotating when the telescopic rod 8 rotates, and the rotating block 5 from rotating when the telescopic rod 8 rotates. The second rotating shaft 24 prevents the ruler sleeve 1 from rotating when the telescopic rod 8 rotates.
[0029] Please refer to Figure 3 、 4 The outer surface of the worm 17 is meshedly connected with a worm wheel 18. When the worm 17 rotates, the worm wheel 18 is driven to rotate by the meshing connection. A fixed rod 19 is fixed to one end of the worm wheel 18. When the worm wheel 18 rotates, the fixed rod 19 is driven to rotate. A gear 20 is fixed to one side of the fixed rod 19. When the fixed rod 19 rotates, the gear 20 is driven to rotate. The outer surface of the gear 20 is meshedly connected with a toothed plate 22. When the gear 20 rotates, the toothed plate 22 is driven to move by the meshing connection. A first T-shaped block 21 is fixed to one end of the toothed plate 22. When the toothed plate 22 moves, it drives the first T-shaped block 21 to move, and the first T-shaped The block 21 is slidably connected to the first T-slot 11. The other end of the tooth plate 22 is fixed with a measuring ruler 10. The outer surface of the measuring ruler 10 is provided with scale values to facilitate the measurement of the ruler sleeve 1. When the tooth plate 22 moves, the measuring ruler 10 is driven to move, and the measuring ruler 10 is located inside the ruler sleeve 1. A second T-block 23 is fixed to one end of the measuring ruler 10. When the measuring ruler 10 moves, the second T-block 23 is driven to move, and the second T-block 23 is slidably connected to the second T-slot 12. When the measuring ruler 10 moves, it is slidably connected to the first T-slot 11 through the first T-block 21 to prevent the measuring ruler 10 from moving and falling off.
[0030] When the worm 17 rotates, it drives the worm wheel 18 to rotate through the meshing connection. When the worm wheel 18 rotates, it drives the fixed rod 19 to rotate. When the fixed rod 19 rotates, it drives the gear 20 to rotate.
[0031] In this embodiment, when the rotating block 5 rotates, it drives the telescopic rod 8 to rotate. When the telescopic rod 8 rotates, it drives the worm 17 to rotate. When the worm 17 rotates, it drives the worm wheel 18 to rotate through the meshing connection. When the worm wheel 18 rotates, it drives the fixed rod 19 to rotate. When the fixed rod 19 rotates, it drives the gear 20 to rotate. When the gear 20 rotates, it drives the tooth plate 22 to move through the meshing connection. When the tooth plate 22 moves, it drives the measuring ruler 10 to move.
[0032] Working principle: By rotating the screw 13, the screw 13 drives the screw sleeve 14 to move up and down through the meshing connection. When the screw sleeve 14 moves, it drives the fixed column 7 to move. When the fixed column 7 moves, it drives the ruler sleeve 1 to move. When the ruler sleeve 1 moves, the measuring ruler 10 moves.
[0033] The rotating block 5 is rotated, and when the rotating block 5 rotates, the telescopic rod 8 is rotated, and when the telescopic rod 8 rotates, the worm 17 is rotated, and when the worm 17 rotates, the worm wheel 18 is rotated through the meshing connection, and when the worm wheel 18 rotates, the fixed rod 19 is rotated, and when the fixed rod 19 rotates, the gear 20 is rotated, and when the gear 20 rotates, the tooth plate 22 is moved through the meshing connection, and when the tooth plate 22 moves, the measuring ruler 10 is moved.
[0034] 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.
Claims
1. A bridge expansion joint width gauge, comprising a ruler sleeve (1), characterized in that: A fixing column (7) is fixed to one side of the top of the ruler sleeve (1), a screw sleeve (14) is fixed inside the fixing column (7), the inner wall of the screw sleeve (14) is meshedly connected with a screw rod (13), the outer surface of the screw rod (13) is meshedly connected with a fixing disk (15), the outer surface of the fixing disk (15) is provided with a fixing sleeve (9), and the screw rod (13) passes through the top of the fixing sleeve (9).
2. The expansion joint width gauge for bridge inspection according to claim 1, characterized in that: A telescopic column (2) is fixed to the middle of the top of the ruler sleeve (1), a handle (6) is fixed to one side of the telescopic column (2), and the handle (6) is located on one side of the fixed sleeve (9).
3. The expansion joint width gauge for bridge inspection according to claim 1, characterized in that: A first T-shaped slot (11) is provided at one end of the inner wall of the ruler sleeve (1), a second T-shaped slot (12) is provided at the other end of the inner wall of the ruler sleeve (1), and a groove (16) is provided in the middle of one side of the ruler sleeve (1).
4. The expansion joint width gauge for bridge inspection according to claim 2, characterized in that: A fixed block (3) is fixed to one end of the telescopic column (2), a first rotating shaft (4) is fixed inside the fixed block (3), and a telescopic rod (8) is fixed to the inner wall of the first rotating shaft (4).
5. The expansion joint width gauge for bridge inspection according to claim 4, characterized in that: A rotating block (5) is fixed to the top of the telescopic rod (8), a second rotating shaft (24) is fixed to the outer surface of the telescopic rod (8), and the second rotating shaft (24) is located at the top of the groove (16), and a worm (17) is fixed to the bottom of the telescopic rod (8), and the worm (17) is located inside the groove (16).
6. The expansion joint width gauge for bridge inspection according to claim 5, characterized in that: The outer surface of the worm (17) is meshedly connected with a worm wheel (18), one end of the worm wheel (18) is fixed with a fixing rod (19), and one side of the fixing rod (19) is fixed with a gear (20).
7. The expansion joint width gauge for bridge inspection according to claim 6, characterized in that: The outer surface of the gear (20) is meshedly connected with a toothed plate (22), one end of the toothed plate (22) is fixed with a first T-shaped block (21), and the first T-shaped block (21) is slidably connected to the first T-shaped slot (11), the other end of the toothed plate (22) is fixed with a measuring ruler (10), and the measuring ruler (10) is located inside the ruler sleeve (1), one end of the measuring ruler (10) is fixed with a second T-shaped block (23), and the second T-shaped block (23) is slidably connected to the second T-shaped slot (12).