CN220207390U - Load impact compound salt spray test device - Google Patents

Abstract

The utility model aims to provide a salt spray test device with load impact compounding, which comprises a test box, a long-term load holding component, a chlorine salt erosion component and a heating device. The chloride salt erosion component discharges salt fog into the test box to simulate the needed salt fog environment, the long-term load holding device can apply long-term load to the reinforced concrete test piece in the test box, and the heating device is used for detecting the high temperature resistance of the reinforced concrete test piece. The salt spray test device with the load impact composite is also provided with an impact load component to simulate the impact of the impact wave of sea waves and aftershocks on a reinforced concrete test piece. The impact load assembly comprises an impact frame, an impact device and a return spring, wherein the impact device and the return spring are matched to drive the impact frame to do horizontal reciprocating motion, and flexible non-instant impact is brought to the reinforced concrete test piece.

Description

Load impact compound salt spray test device

Technical Field

The utility model relates to the technical field of detection test equipment, in particular to a salt spray test device.

Background

The coastal building is made of reinforced concrete, and is a widely applied building material. When the method is used in practical engineering, coastal buildings are mostly impacted by sea waves and tsunamis, and chloride ions existing in sea water and ocean atmosphere can invade and rust reinforced concrete, so that the bearing capacity of the reinforced concrete structure is reduced. Therefore, reinforced concrete materials with good durability and good performance can be selected. Therefore, the engineering community is very much concerned with the durability of reinforced concrete.

The salt spray test is to simulate the real environment of the coastal building by using the salt spray environment provided by the salt spray tester, and is a manual accelerated corrosion test for the corrosion condition of reinforced concrete, so that the test period can be effectively shortened. While the durability failure of reinforced concrete in real natural environment is often the common result of multiple factors, the durability research of concrete should also consider the multiple factors related to the concrete. The publication number is: CN206362641U discloses a concrete test piece long-term loading device under salt spray environment, comprising a salt spray test box and a loading device. The concrete test piece is placed in the salt spray environment box to simulate the required salt spray environment, and the loading device provides continuous compressive load for the reinforced concrete test piece. The influence of long-term load-holding effect on the salt spray corrosion test of the reinforced concrete is considered.

However, in practical use, the reinforced concrete material of the coastal building is not only affected by salt spray corrosion and long-term load, but also affected by tsunami wave impact of seawater or impact wave of aftershock. The existing salt fog experimental device cannot simulate the surrounding environment of a coastal area building more truly.

Disclosure of Invention

The utility model aims to provide a salt spray test device with load vibration compounding, which can simulate the salt spray corrosion test of a reinforced concrete test piece under long-term load, and meanwhile, an impact test component is added to simulate the impact of sea waves and the impact wave of aftershock, so that the salt spray test device can simulate the corrosion test to be more similar to a real natural environment.

In order to solve the technical problem, the utility model adopts the following solution:

the utility model provides a load strikes compound salt fog test device, includes the test box, installs hold load subassembly and chlorine salt erosion subassembly for a long time in the test box inner chamber, its characterized in that still includes impact load subassembly, impact load subassembly is including slidable mounting impact frame on the test box, drive impact frame for the impact device and the return spring of test box in the horizontal direction removal, the return spring extends in the horizontal direction, one end with impact frame is connected, the other end with the test box is connected.

And placing the reinforced concrete in a test box, and applying axial long-term load to the reinforced concrete test piece by the long-term load holding assembly. The chlorine salt erosion component sprays chlorine salt into the test box to simulate the required salt fog environment. The chlorine salt erosion component and the long-term load holding component are both in the prior art, and engineers can directly select mature products in the prior art. The impact device drives the impact frame to move in the horizontal direction relative to the test box so as to impact the reinforced concrete test piece, and the return spring connected with the impact frame is stretched to deform at the same time, so that a reaction force is applied to the impact frame to pull the impact frame back. Under the cooperation of the impact device and the return spring, the impact frame carries out horizontal reciprocating motion to continuously impact the reinforced concrete test piece so as to simulate the impact of sea waves or the impact wave of aftershock. The salt spray corrosion test of the reinforced concrete test piece under the shock wave of sea waves or aftershocks and under the double factors of long-term load is realized, so that the simulated environment is more similar to the real natural environment.

Preferably, the impact frame comprises an inner plate mounted inside the test chamber, an outer plate mounted outside the test chamber, and a connecting frame connecting the inner plate and the outer plate, and the impact device is mounted outside the test chamber.

The high-concentration salt fog environment inside the test box is easy to corrode the device, so that the service life of the device is shortened. The impact device is arranged outside the test box, and the outer plate outside the test box is driven to move horizontally. The outer plate is connected with the inner plate in the test box through the connecting rod, so that the inner plate is driven to move in the horizontal direction, and the impact on the reinforced concrete test piece in the test box is realized. The impact device is arranged outside the test box, so that the impact device can be prevented from being corroded by salt mist, the service life is shortened, and the cost of the device is saved.

Preferably, the number of the connection frames in each impact frame is two or more.

When the planking passes through the link and drives the inner panel and do the horizontal direction and remove, set up the link more than two and can guarantee to strike the frame and remove along predetermineeing the orbit, be difficult for deviating, improve the steadiness of device.

Preferably, the impact device comprises a driving motor and a transmission device, wherein the transmission device comprises a rotating shaft connected with the driving motor, an elliptical impact block sleeved on the rotating shaft, and a mounting plate which is arranged outside the test box and movably connected with the rotating shaft.

The driving motor is connected with the rotating shaft to drive the rotating shaft to rotate, and the elliptical impact block sleeved on the rotating shaft also rotates along with the rotating shaft. When the reinforced concrete test piece rotates to a certain angle, the elliptical impact speed collides with the outer plate on the impact frame, so that the impact frame is driven to move in the horizontal direction, and the reinforced concrete test piece is impacted. Compared with the method that the reinforced concrete test piece is directly impacted by the vibrator, the impact device is flexible to impact the reinforced concrete test piece, is not instant, and can simulate the impact of real sea waves and the impact of residual shock to the reinforced concrete test piece. And the service lives of the impact device and the impact frame can be prolonged by flexible impact, and the damage of the device caused by collision is avoided. The mounting panel is fixed outside the test chamber and with pivot swing joint, has restricted the spatial position of pivot, prevents that the pivot from dropping.

As the optimization of the utility model, the impact frame and the transmission device are two sets, and are arranged on two sides of the test box, each rotating shaft is connected with a transmission wheel, and the two transmission wheels are connected through a transmission belt.

When the driving motor works, the transmission device on one side is driven to work, and the impact frame on the same side is driven to impact the reinforced concrete test piece. Meanwhile, the driving wheels connected with the driving devices on the same side are driven to rotate together, and the driving wheels on the other side are driven to rotate through the driving belt, so that the driving devices on the other side also start to work at the same time, and the impact frame on the other side is driven to impact the reinforced concrete test piece. The arrangement ensures that the reinforced concrete test piece can bear the impact brought by two opposite directions at the same time, and the driving motors are not required to be installed at the two sides at the same time, thereby saving the cost of the device.

Preferably, the number of the elliptical impact blocks in each transmission device is more than two.

The elliptical impact blocks with more than two numbers can ensure that the direction of the motion track vertical to the rotating shaft is not deviated when the outer plate is driven to move in the horizontal direction relative to the test box, and the stability of the device is enhanced.

Preferably, the test chamber includes a heating device.

In high temperature conditions such as fire, reinforced concrete structures may be subjected to severe thermal stresses and temperature gradients, and changes in strength and hardening time. The heating device can improve the temperature inside the test box and test the high temperature resistance of the reinforced concrete test piece. A prior art heating rod may be used to raise the temperature inside the test chamber.

Preferably, the test box is provided with a multi-control switch, and the multi-control switch is electrically connected with the chlorine salt corrosion component and the impact load component.

The multi-control switch is electrically connected with the chlorine salt erosion component and the impact load component, so that a worker can conveniently control the working states of the chlorine salt erosion component and the impact load component.

Preferably, the test chamber comprises a chamber body and a transparent sealing door arranged on the chamber body.

When the reinforced concrete test piece is put into the test box to carry out salt spray corrosion test, the sealing door can prevent salt spray gas in the test box from leaking, so that the test box has good air tightness. Meanwhile, the transparent sealing door is convenient for workers to observe the salt fog corrosion condition inside the test box outside, and the workers do not need to enter the test box to check.

As the optimization of the utility model, the long-term load holding assembly comprises a supporting frame arranged at the top of the test box, a lever arm movably connected with the top end of the supporting frame, a load device and a pressing device which are connected to the lever arm, wherein the load device is positioned outside the test box, and a through groove through which the pressing device can pass is formed in the top of the test box.

The long-term load device is regarded as a lever, and the support frame corresponds to a fulcrum. The load means on the lever arm gives the lever arm a vertical downward force and the hold-down means on the lever arm is also subjected to a downward force. The pressing device is placed on the upper surface of the reinforced concrete test piece by penetrating the penetrating groove into the test box, the reinforced concrete test piece is not only subjected to the gravity of the pressing device in the vertical downward direction, but also the load device brings downward pressure to the pressing device through the lever arm. The pressure of the pressing device on the reinforced concrete test piece is changed by adjusting the weight of the load device and the position on the lever arm, so that the load weight of the reinforced concrete test piece can be conveniently adjusted by a worker. The load device is located outside the test box, so that a worker can directly carry out load weight adjustment outside without opening the test box.

In summary, the utility model has the following beneficial effects:

1. under the cooperation of the impact device and the return spring, the impact frame carries out horizontal reciprocating motion to continuously impact the reinforced concrete test piece so as to simulate the impact of sea waves or the impact wave of aftershock. The simulation environment is more similar to the real natural environment.

2. The elliptic impact block carries out flexible impact on the impact frame, compared with the direct impact of the vibrator on the impact frame, the flexible impact simulates the impact of sea waves and aftershock impact waves more truly, and the service life of the impact load assembly can be prolonged.

3. The connecting frames and the elliptical impact blocks are arranged in more than two, so that the impact frames can be ensured to reciprocate along the preset track, and the track deviation is prevented.

4. The weight of the load applied to the reinforced concrete test piece in the test box can be changed by adjusting the weight of the load device outside the test box, and the test box does not need to be opened.

5. The heating device is arranged in the test box and used for detecting the high temperature resistance of the reinforced concrete test piece.

Description of the drawings:

FIG. 1 is a schematic diagram of an embodiment;

FIG. 2 is a schematic view of an impact load assembly;

fig. 3 is a schematic diagram of a long-term load bearing assembly.

In the figure: 1. the test box, 11, transparent sealing door, 12, through groove, 2, impact load assembly, 21 impact frame, 211, inner plate, 212, outer plate, 213, link, 22, impact device, 221, driving motor, 222, transmission device, 2221, rotating shaft, 2222, oval impact block, 2223, mounting plate, 223, driving wheel, 224, driving belt, 23, return spring, 3, long-term load assembly, 31, lever arm, 32, support frame, 33, load device, 34, pressing device, 4, chlorine salt erosion assembly, 5, multi-control switch.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

As shown in figure 1, the salt spray test device for load impact compounding is provided by the utility model. The chloride salt corrosion component 4 discharges salt mist into the test box 1 to simulate the required salt mist environment and corrode the reinforced concrete test piece. The test chamber 1 is provided with the transparent sealing door 11, so that workers can observe the salt fog corrosion condition inside the test chamber 1. The top of the test box 1 is provided with a through groove 12, so that the long-term load holding assembly 3 can enter the test box 1 through the through groove 12 to apply long-term axial load to the reinforced concrete test piece. In the scheme, an impact load assembly 2 is specially arranged on the test box 1 to simulate the impact of sea waves and aftershock impact waves on a reinforced concrete test piece. The test box 1 is provided with a multi-cavity switch 5 which is electrically connected with the chlorine salt erosion component 4 and the impact load component 2. The heating rod (not shown) inside the test chamber 1 is used for increasing the temperature inside the test chamber and checking the high temperature resistance of the reinforced concrete test piece.

As shown in fig. 3, a schematic diagram of a long-term load bearing assembly is shown. A supporting frame 32 is arranged at the top of the test chamber 1, and the top of the supporting frame 32 is movably connected with one end of the lever arm 31. The other end of the lever arm 31 is connected to a load device 33, which is located outside the test chamber 1. The middle position of the lever arm 31 is connected with a pressing device 34, and the pressing device 34 penetrates through the penetrating groove 12 at the top of the test box 1 and enters the inside of the test box 1 to apply load to the reinforced concrete test piece. The amount of load applied to the reinforced concrete specimen by the pressing means 34 can be adjusted by changing the weight of the load means 33 outside the test box 1.

As shown in fig. 2, a schematic view of the impact load assembly 2 is shown. A driving motor 221 is arranged outside the test chamber 1, and is connected with a rotating shaft 2221 to drive the rotating shaft 2221 to rotate. The pivot 2221 is movably connected with a mounting plate 2223 mounted on the test box 1, and the pivot 2221 is prevented from falling off when rotating. The oval impact block 2222 is sleeved on the rotating shaft 2221 and rotates together with the rotating shaft 2221, and when the oval impact block 2222 rotates to a specific position, flexible impact is caused on the outer plate 212 outside the test chamber 1. The rotating shaft 2221, the elliptical impact block 2222 and the mounting plate 2223 together form a transmission device 222 which is respectively positioned on two sides of the outside of the test chamber 1. The rotating shafts 2221 on both sides are connected with a driving wheel 223 and rotate together with the rotating shafts 2223. A driving belt 224 is connected between the two driving wheels 223, and when the driving device 222 on one side drives, the driving belt 224 and the driving wheel 223 cooperate with each other to drive the driving device 222 on the other side to start driving.

When the driving devices 222 on two sides start driving at the same time, the oval impact blocks 2222 cause flexible impact to the outer plates 212 on two sides outside the test chamber 1, so as to drive the outer plates 211 on two sides to move horizontally relative to the test chamber 1. The outer plates 211 on the two sides of the test chamber 1 are respectively connected with the inner plates 211 in the same side direction in the test chamber 1 through the connecting frames 213, and the inner plates 211 are driven to move along the horizontal direction. The inner plates 211 on both sides of the test chamber 1 are connected with return springs 23 extending along the horizontal direction, and the other ends of the return springs 23 are connected with the inner wall of the test chamber 1. When the inner plate 211 is driven to horizontally move, the return spring 23 is stretched to give a reaction force to the inner plate 211 to pull the inner plate 211 back. Under the cooperation of the return spring 211 and the transmission device 222, the inner plate 211, the connecting frame 213 and the outer plate 212 always do reciprocating motion along the horizontal direction to simulate the shock waves of sea waves and aftershocks, and continuously impact the reinforced concrete test piece in the test box 1.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The utility model provides a load impact compound salt fog test device, includes test box (1), installs hold load subassembly (3) and chlorine salt erosion subassembly (4) for a long time on test box (1), its characterized in that still includes impact load subassembly (2), impact load subassembly (2) are including slidable mounting impact frame (21) on test box (1), drive impact frame (21) for impact device (22) and return spring (23) that test box (1) moved in the horizontal direction, return spring (23) extend in the horizontal direction, one end with impact frame (21) are connected, the other end with test box (1) are connected.

2. A load impact composite salt spray test device according to claim 1, characterized in that the impact frame (21) comprises an inner plate (211) mounted inside the test box (1), an outer plate (212) mounted outside the test box (1), and a connecting frame (213) connecting the inner plate (211) and the outer plate (212), and the impact device (22) is mounted outside the test box (1).

3. A load impact composite salt spray test device according to claim 2, wherein the number of said connection frames (213) in each impact frame (21) is two or more.

4. The salt spray test device for load impact compounding according to claim 1, wherein the impact device (22) comprises a driving motor (221) and a transmission device (222), the transmission device (222) comprises a rotating shaft (2221) connected with the driving motor (221), an elliptical impact block (2222) sleeved on the rotating shaft (2221), and a mounting plate (2223) mounted outside the test box (1) and movably connected with the rotating shaft (2221).

5. The salt spray test device for load impact compounding according to claim 4, wherein the impact frame (21) and the transmission device (222) are two sets, and are arranged on two sides of the test box (1), each rotating shaft (2221) is connected with a transmission wheel (223), and the two transmission wheels (223) are connected through a transmission belt (224).

6. The load impact composite salt spray test device according to claim 4, wherein the number of elliptical impact blocks (2222) in each transmission device (222) is more than two.

7. A load impact composite salt spray test device according to any one of claims 1-6, wherein the test chamber (1) contains heating means inside.

8. The salt spray test device for load impact compounding according to any one of claims 1-6, wherein the test box (1) is provided with a multi-control switch (5), and the multi-control switch (5) is electrically connected with the chlorine salt erosion component (4) and the impact load component (2).

9. A load impact composite salt spray test device according to any one of claims 1-6, wherein the test chamber (1) comprises a chamber body and a transparent sealing door (11) arranged on the chamber body.

10. A load impact compound salt spray test apparatus according to any one of claims 1-6, wherein the long-term load holding assembly (3) comprises a support frame (32) arranged at the top of the test box (1), a lever arm (31) movably connected with the top end of the support frame (32), and a load device (33) and a pressing device (34) connected to the lever arm (31), wherein the load device (33) is positioned outside the test box, and a through groove (12) through which the pressing device (34) can pass is formed in the top of the test box (1).