Bridge lightweight detection device

Abstract

The utility model relates to road and bridge construction detection technical field, concretely is a kind of bridge light weight detection device, comprising: mutually screwing and fixed lower shell, upper shell;Hammering rod is provided in lower shell, the side wall of lower shell is movably inserted and is provided with the lug of the clamping hammering rod;Piston is sealingly and movably arranged in upper shell, the lower end of piston is abutted and is provided with thrust spring, the lower end of thrust spring is abutted with hammering rod;Air pump is fixedly arranged on the side of upper shell, the air outlet end of air pump is communicated with upper shell, and piston moves downward when inflating. The utility model relates to a kind of bridge light weight detection device, can more easily compress spring.

Description

Technical Field

[0001] This utility model relates to the field of road and bridge construction testing technology, specifically a lightweight bridge testing device. Background Technology

[0002] Bridge lightweighting refers to the design of bridges to reduce their weight, mainly by optimizing materials, structure, and construction techniques, while ensuring their load-bearing capacity, durability, and safety performance.

[0003] Currently, lightweighting of bridges has become a standardized process in the bridge design phase. Therefore, during the bridge acceptance phase, it is necessary to conduct rigorous testing on various performance parameters of the bridge, including: structural testing, such as the stress, strain, and vibration parameters of the bridge; material testing, such as the concrete strength and the degree of corrosion of the steel bars; and load testing, such as the deformation and stress of the bridge under static load and the dynamic response of the bridge under dynamic load.

[0004] Among them, the rebound method is used to test the concrete strength of bridges. A rebound hammer is typically used during the testing process. However, conventional rebound hammers still have the following shortcomings in use:

[0005] The concrete strength is tested by using a compression spring to provide hammering force. The rebound hammer uses a screw connection to compress the spring. The pressure gradually increases during the spring compression process, making it more difficult to rotate the screw connection and also taking longer to rotate. Utility Model Content

[0006] In order to solve the technical problems existing in the background art, the present invention provides a bridge lightweight testing device that can more easily compress springs.

[0007] The technical solution adopted by this utility model is:

[0008] A lightweight bridge testing device, comprising:

[0009] The upper and lower housings are fixed to each other. A hammer rod is installed inside the lower housing, and a latch for engaging the hammer rod is movably inserted into the side wall of the lower housing. A piston is sealed and movably installed inside the upper housing. A thrust spring is abutted against the lower end of the piston, and the lower end of the thrust spring abuts against the hammer rod. An air pump is fixedly installed on one side of the upper housing. The air outlet of the air pump is connected to the upper housing and causes the piston to move downward when inflated.

[0010] Furthermore, the lower housing is cylindrical, with a limiting slide in the middle of the lower housing. The hammer rod is movable and passes through the center of the limiting slide. A top head is coaxially provided at the upper end of the hammer rod, and the upper end of the top head abuts against the lower end of the thrust spring.

[0011] Furthermore, the outer wall of the lower part of the hammer rod is provided with graduations, and a graduation ring is sleeved on the lower part of the hammer rod, with the upper end of the graduation ring abutting against the lower end of the limiting slide.

[0012] A viewing window is provided through the lower housing side wall below the limiting slide to read the scale on the hammer rod at the degree ring.

[0013] Furthermore, the lower part of the hammer rod is configured as a cone shape;

[0014] The lower part of the lower housing is configured as a conical cylinder.

[0015] Furthermore, the upper housing is configured as a downward-opening barrel shape and is screwed and fixed to the lower housing;

[0016] The piston is sealed and movably disposed in the upper part of the upper housing. Piston rods extend from the upper and lower ends of the piston, respectively. A spring top plate is coaxially disposed at the lower end of the lower piston rod. The spring top plate is used to engage the upper end of the thrust spring. The piston rod at the upper end extends sealed to the outside of the upper housing and is screwed with a limit nut. The lower end of the limit nut is sealed and abuts against the upper end of the upper housing.

[0017] Furthermore, the thrust spring is housed in the upper part of the lower housing and the lower part of the upper housing;

[0018] The upper end of the top head is provided with a slot for engaging the lower end of the thrust spring.

[0019] Furthermore, a sealing ring and piston rings are fitted onto the outer wall of the piston.

[0020] Furthermore, an exhaust hole is provided through the lower side wall of the upper housing.

[0021] Furthermore, the upper part of the upper shell is radially hinged with a pressure rod, and there are two pressure rods, which are respectively located on both sides of the outer wall of the upper shell. A receiving groove is provided in the middle of the pressure rod, and a curved rod is provided between the ends of the pressure rods on both sides.

[0022] When the pressure bar is folded, the curved bar ring is located outside the upper housing.

[0023] Furthermore, the drive rod of the air pump extends upward and is provided with a connecting rod;

[0024] When the pressure rod is extended, the connecting rod is housed within the receiving groove.

[0025] The beneficial effects of this lightweight bridge testing device are as follows:

[0026] 1. The piston is pushed by compressed gas, which in turn compresses the spring and provides a hammering force;

[0027] 2. By calculating the difference in readings before and after hammering, the rebound distance is determined, the rebound force is inferred, and thus it is determined whether the performance parameters of the bridge concrete meet the standards. Attached Figure Description

[0028] Figure 1 This utility model provides a three-dimensional schematic diagram of a lightweight bridge testing device. Figure 1 ;

[0029] Figure 2 This utility model provides a three-dimensional schematic diagram of a lightweight bridge testing device. Figure 2 ;

[0030] Figure 3 This is a cross-sectional schematic diagram of a lightweight bridge testing device provided by this utility model.

[0031] In the picture:

[0032] 10. Lower housing; 11. Limiting slide; 12. Top head; 13. Hammer rod; 14. Dial ring; 15. Clamping lug.

[0033] 20. Upper housing; 21. Piston; 22. Spring top plate; 23. Thrust spring; 24. Limit nut.

[0034] 30. Air pump; 31. Connecting rod;

[0035] 40. Compression bar; 41. Curved bar. Detailed Implementation

[0036] To more clearly and explicitly illustrate the specific implementation objectives and methods of this utility model, the technical solution of this utility model will be fully described below. The described embodiments are only some embodiments of this utility model, not all embodiments. Without creative effort, all other embodiments based on the described embodiments of this utility model are within the protection scope of this utility model.

[0037] This utility model relates to a lightweight bridge testing device, such as... Figure 1 , Figure 2 , Figure 3 As shown, it includes:

[0038] The lower shell 10 and the upper shell 20 are fixed to each other.

[0039] The upper part of the lower housing 10 is cylindrical, and the lower part is conical. A limiting slide 11 is provided in the middle of the conical lower housing 10. A top head 12 is slidably housed inside the cylindrical lower housing 10. A latch 15 is movably inserted into the side wall of the lower housing 10 to engage the lower end of the top head 12. The upper end of the top head 12 has a slot for engaging the lower end of the thrust spring 23. A hammer rod 13 is coaxially mounted at the lower end of the top head 12. The hammer rod 13 is movable and passes through the center of the limiting slide 11. The lower part of the hammer rod 13 is conical. The outer wall of the lower part of the hammer rod 13 is provided with a scale. The lower part of the hammer rod 13 is fitted with a degree ring 14. The upper end of the degree ring 14 abuts against the lower end of the limiting slide 11. A viewing window is provided through the side wall of the lower housing 10 below the limiting slide 11 for reading the scale on the hammer rod 13 at the degree ring 14.

[0040] The upper housing 20 is configured as a downward-opening barrel shape and is screwed and fixed to the lower housing 10.

[0041] A piston 21 is sealed and movably disposed inside the upper housing 20. The piston 21 is sealed and movably disposed in the upper part of the upper housing 20. A sealing ring and a piston ring are sleeved on the outer wall of the piston 21. A piston rod is extended from the upper and lower ends of the piston 21 respectively. A spring top plate 22 is coaxially disposed at the lower end of the lower piston rod. A thrust spring 23 is snapped onto the spring top plate 22. The thrust spring 23 is housed in the upper part of the lower housing 10 and the lower part of the upper housing 20. The upper piston rod extends sealed to the outside of the upper housing 20. A sealing ring and a piston ring are housed on the upper housing 20 at the upper piston rod. A limit nut 24 is screwed onto the upper piston rod. The lower end of the limit nut 24 is sealed and abuts against the upper end of the upper housing 20. An exhaust hole is provided through the lower side wall of the upper housing 20.

[0042] Inside the upper housing 20: The inner diameter of the compartment of the top head 12 is larger than the inner diameter of the compartment of the thrust spring 23, thereby limiting the highest position of the top head 12.

[0043] An air pump 30 is fixedly installed on one side of the upper housing 20. A return spring is installed inside the air pump 30. The air outlet of the air pump 30 is connected to the upper housing 20 and causes the piston 21 to move downward when inflated. The drive rod of the air pump 30 extends upward and is provided with a connecting rod 31. When the pressure rod 40 is unfolded, the connecting rod 31 is accommodated in the receiving groove.

[0044] The upper part of the upper shell 20 is radially hinged with a pressure rod 40. There are two pressure rods 40, which are respectively located on both sides of the outer wall of the upper shell 20. A receiving groove is provided in the middle of the pressure rod 40. A curved rod 41 is provided between the ends of the two pressure rods 40. When the pressure rod 40 is folded, the curved rod 41 is arranged around the outside of the upper shell 20.

[0045] Based on the specific structure of the lightweight bridge testing device in the above embodiments, its working process will be further explained below:

[0046] A. Adjustment:

[0047] Loosen the limiting nut 24 so that the upper end of the upper housing 20 and the upper piston rod are in a non-sealed state;

[0048] Push the hammer rod 13 to the top and lock it in place with the lower end of the top head 12 by the latch 15;

[0049] By observing through the viewing window, ensure that the upper end of the degree ring 14 is in contact with the lower end of the limit slide 11, and record the "zero point" reading.

[0050] Rotate the pressure rod 40 until the connecting rod 31 is in the groove;

[0051] Tighten the limiting nut 24 to seal the upper end of the upper housing 20 with the upper piston rod.

[0052] B. Applying pressure:

[0053] Press the pressure rod 40 down to move the connecting rod 31 in the container downward, which in turn moves the drive rod of the air pump 30 downward. The drive rod of the air pump 30 moves upward through the action of the return spring inside the air pump 30. Repeat pressing the pressure rod 40 down.

[0054] Air is compressed into the upper housing 20, and the air below the piston 21 is discharged through the exhaust port, causing the piston 21 to move to the bottommost position, thereby compressing the thrust spring 23.

[0055] C. Testing:

[0056] The lower end of the lower housing 10 is abutted against the outer wall of the bridge;

[0057] Pull the latch 15 to disengage the locking head 12 from the latch 15;

[0058] Under the thrust of the thrust spring 23, the top head 12 and the hammer rod 13 move downward, and the lower end of the hammer rod 13 strikes the outer wall of the bridge and bounces back.

[0059] By observing through the window, the degree ring 14 records the "bounce" reading.

[0060] The concrete strength of the bridge is determined by measuring the state of the bridge wall when struck by the hammer rod 13, as well as the calculation structure of the "zero point" and "rebound" readings.

[0061] In summary, the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification. All equivalent variations and modifications of the shape, structure, features, and spirit described in the claims of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A lightweight bridge testing device, characterized in that: include: The lower shell (10) and upper shell (20) are fixed to each other; A hammer rod (13) is provided inside the lower housing (10), and a latch (15) for engaging the hammer rod (13) is movably inserted into the side wall of the lower housing (10). A piston (21) is sealed and movably disposed inside the upper housing (20). A thrust spring (23) is abutted at the lower end of the piston (21). The lower end of the thrust spring (23) abuts against the hammer rod (13). An air pump (30) is fixedly installed on one side of the upper housing (20). The air outlet of the air pump (30) is connected to the upper housing (20) and causes the piston (21) to move downward when inflated.

2. The lightweight bridge testing device according to claim 1, characterized in that: The lower housing (10) is cylindrical, and a limiting slide (11) is provided in the middle of the lower housing (10). The hammer rod (13) is movable and passes through the center of the limiting slide (11). A top head (12) is coaxially provided at the upper end of the hammer rod (13), and the upper end of the top head (12) abuts against the lower end of the thrust spring (23).

3. The lightweight bridge testing device according to claim 2, characterized in that: The hammer rod (13) has a scale on its lower outer wall, and a scale ring (14) is fitted on the lower part of the hammer rod (13). The upper end of the scale ring (14) abuts against the lower end of the limiting slide (11). A viewing window is provided through the side wall of the lower housing (10) below the limiting slide (11) to read the scale on the hammer rod (13) at the degree ring (14).

4. A lightweight bridge testing device according to claim 1, 2, or 3, characterized in that: The lower part of the hammer rod (13) is cone-shaped; The lower part of the lower housing (10) is configured as a conical cylinder.

5. The lightweight bridge testing device according to claim 2, characterized in that: The upper housing (20) is configured as a barrel shape with a downward opening and is screwed and fixed to the lower housing (10); The piston (21) is sealed and movably disposed in the upper part of the upper housing (20). The piston rod extends from the upper and lower ends of the piston (21). A spring top plate (22) is coaxially disposed at the lower end of the lower piston rod. The spring top plate (22) is used to engage the upper end of the thrust spring (23). The piston rod extends sealed to the outside of the upper housing (20) and is screwed with a limit nut (24). The lower end of the limit nut (24) is sealed and abuts against the upper end of the upper housing (20).

6. The lightweight bridge testing device according to claim 5, characterized in that: The thrust spring (23) is housed in the upper part of the lower housing (10) and the lower part of the upper housing (20); The upper end of the top head (12) is provided with a slot for engaging the lower end of the thrust spring (23).

7. The lightweight bridge testing device according to claim 5, characterized in that: A sealing ring and a piston ring are fitted on the outer wall of the piston (21).

8. The lightweight bridge testing device according to claim 7, characterized in that: An exhaust hole is provided through the lower side wall of the upper housing (20).

9. A lightweight bridge testing device according to claim 8, characterized in that: The upper part of the upper shell (20) is provided with a pressure rod (40) hinged in the radial direction. There are two pressure rods (40), which are respectively located on both sides of the outer wall of the upper shell (20). A groove is provided in the middle of the pressure rod (40), and a curved rod (41) is provided between the ends of the pressure rods (40) on both sides. When the pressure bar (40) is folded, the curved bar (41) is arranged around the outside of the upper housing (20).

10. A lightweight bridge testing device according to claim 9, characterized in that: The drive rod of the air pump (30) extends upward and is provided with a connecting rod (31); When the pressure bar (40) is unfolded, the connecting rod (31) is housed in the groove.

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