A durability testing device for concrete bridge crash walls

Abstract

The present invention discloses a durability performance testing device for concrete bridge crash barriers, which belongs to the field of concrete detection technology, and includes a support frame, the support frame is connected to a guide rail, the side wall of the guide rail is provided with teeth, a slide seat is slidably connected to the guide rail, a linear motor and a travel motor are provided on the top of the slide seat, a driving motor is fixedly connected to the top of the linear motor, an auger is connected to the output end of the driving motor, sleeves are designed on both sides of the driving motor, and a sealed cavity 1 is provided inside the sleeve. In the present invention, through the cooperation of the driving gear and the teeth, the driving motor can automatically carry out a slotting detection work through the cooperation of the piston block 2 and the switch every time it moves a certain distance, thereby realizing the equidistant automatic slotting detection of the concrete crash barrier, without manual operation and anchor points, significantly improving the detection efficiency, and at the same time, the slot body opened by the auger is uniform, which is convenient for unified observation and detection.

Description

Technical Field

[0001] The invention relates to the technical field of concrete detection, and in particular to a durability testing device for concrete bridge crash barriers. Background Art

[0002] The concrete crash barrier of a bridge is a protective facility installed on both sides of the bridge or in the central dividing strip. In order to ensure the structural stability and long-term protection capability of the concrete crash barrier of the bridge, a durability test is required after the construction is completed. The existing durability test generally includes the carbonization degree of the concrete layer of the crash barrier. The carbonization depth can reflect the durability of the concrete layer, judge its overall strength and construction and maintenance quality, and conduct a comprehensive assessment of its anti-erosion ability and service life.

[0003] The existing durability test of concrete bridge crash barriers generally involves manually selecting test points, then using tools to chisel the surface to make grooves, then cleaning the chiseled area and spraying phenolphthalein test reagent, and then using a test instrument to detect the degree of carbonization. However, the existing technology has certain limitations. Manual test point selection includes multiple steps such as measurement marking, which is cumbersome to operate. In addition, the manual chiseling of grooves is not only irregular in size, depth and shape, which is not conducive to observation and measurement, and can easily lead to errors in the test results. In addition, when the grooves are too deep, it is easy to damage the wall structure, affecting the overall strength of the crash barrier.

[0004] How to invent a durability testing device for concrete bridge crash walls to improve these problems has become an urgent problem to be solved by technicians in this field. Summary of the invention

[0005] In order to make up for the above shortcomings, the present invention provides a durability performance testing device for concrete bridge crash barriers, aiming to improve the problems raised by the above background technology.

[0006] The present invention is achieved in that:

[0007] The present invention provides a durability testing device for concrete bridge anti-collision walls, comprising a support frame, the support frame is connected with a guide rail, the side wall of the guide rail is provided with teeth, a slide seat is slidably connected to the guide rail, a linear motor and a travel motor are provided on the top of the slide seat, a driving motor is fixedly connected with the top of the linear motor, an auger is connected with the output end of the driving motor, sleeves are designed on both sides of the driving motor, a sealing chamber 1 is provided inside the sleeve, a piston block 2 and a slider are sleeved inside the sealing chamber 1, a support rod extending to the outside of the sleeve is provided on the side wall of the slider, a connecting pipe penetrating through the piston block 2 and extending to the inside of the support rod is provided on the side wall of the piston block 2, a spring is provided between the piston block 2 and the inner side wall of the sealing chamber 1, a spring is also provided between the piston block 2 and the slider, and the sleeve is further provided with:

[0008] A driving mechanism, used for driving the slide to move and storing air in the sealed chamber;

[0009] The air-jet mechanism provides different degrees of air blowing during the auger drilling and slotting process and the exit process after the slotting.

[0010] Liquid spraying mechanism, which performs reagent spraying test after slotting is completed;

[0011] The driving mechanism includes a pump air pipe opened inside the sleeve and connected with the inside of the sealed chamber 1. The output end of the travel motor is connected with a driving gear that cooperates with the teeth. The interior of the slide is connected with a transmission gear and a turntable through a set of rotating shafts. The driving gear and the transmission gear are meshed. An air groove is opened inside the slide. The interior of the air groove is sleeved with a piston block 1. The piston block 1 and the turntable are connected and cooperated by a connecting rod. The air groove is connected with the pump air pipe. The inner side wall of the sealed chamber 1 is provided with a switch that cooperates with the piston block 2.

[0012] Preferably, the jet mechanism includes a sealed chamber 2 opened inside the support rod, a valve block 1 is provided at one end of the connecting pipe extending into the sealed chamber 2, the valve block 2 is sleeved inside the sealed chamber 2, an inner tube is provided at one end of the valve block 2 away from the valve block 1, an outer tube is sleeved on the outer side of the inner tube, the outer tube is sleeved inside the support rod, a spring is provided between the outer tube and the support rod, a jet pipe is provided on the side wall of the support rod, the jet pipe extends to the inside of the support rod and is connected with the outer tube, and a connecting valve assembly is provided inside the valve block 1.

[0013] Preferably, the side wall of the inner tube is provided with multiple groups of connecting grooves 1, the inner side wall of the outer tube is provided with connecting grooves 2 cooperating with the connecting grooves 1, and the inner side wall of the outer tube is also provided with connecting grooves 3 cooperating with the connecting grooves 1.

[0014] Preferably, the number of the second connecting grooves is less than the number of the first connecting grooves, and the length of the interval between the second connecting groove and the third connecting groove is greater than the length of the first connecting groove.

[0015] Preferably, the connecting valve assembly includes a connecting hole opened inside valve block one and connected to the connecting pipe, a sealing block matching the connecting hole is slidably connected inside valve block one, a spring is provided on the side wall of the sealing block, a rectangular groove matching valve block two is opened on the side of valve block one close to valve block two, a magnetic block two is provided on the inner side of valve block two, and a magnetic block one matching magnetic block two is also provided on the side wall of the sealing block.

[0016] Preferably, the inner side wall of the sealing chamber 2 is provided with a clamping block that cooperates with the valve block 2 and the valve block 1, and a spring is provided between the valve block 2 and the sealing chamber 2.

[0017] Preferably, the liquid spraying mechanism includes a liquid storage tank arranged on the side wall of the sleeve, a liquid pumping tube is provided inside the slider, a piston tube cooperating with the liquid pumping tube is provided inside the liquid storage tank, a liquid path cavity is provided inside the support rod, a piston rod cooperating with the liquid path cavity is provided on the side wall of the outer tube, an arc valve cooperating with the liquid path cavity is provided inside the support rod, a liquid spraying tube is provided on the side wall of the support rod, and one end of the liquid spraying tube extends to the inside of the support rod and cooperates with the arc valve.

[0018] Preferably, a channel connecting the liquid path cavity and the liquid spray pipe is provided inside the arc valve, a magnetic piston is sleeved on the inner side of the arc valve, a spring is provided between the magnetic piston and the inner wall of the arc valve, an arc-shaped magnetic block is provided on the side wall of the inner tube, and the arc-shaped magnetic block cooperates with the magnetic piston.

[0019] Preferably, the magnetic pistons are symmetrically designed to have two groups, which cooperate with the liquid path cavity and the liquid spraying pipe respectively.

[0020] In summary, the beneficial effects of the present invention are:

[0021] 1. Through the cooperation of the driving gear and the teeth, the driving motor can automatically carry out a slotting detection work through the cooperation of the piston block 2 and the switch every time it moves a certain distance, realizing the automatic equidistant slotting detection of the concrete crash barrier wall, without the need for manual operation and anchor points, significantly improving the detection efficiency. At the same time, the slots opened by the spiral drill are uniform, which is convenient for unified observation and detection.

[0022] 2. During the grooving process, through the cooperation of valve block 1 and valve block 2, continuous blowing assistance can be provided at the initial stage of the grooving work to remove concrete debris generated during the grooving process, which is convenient for the grooving work. After the auger is withdrawn after the grooving is completed, the remaining accumulated gas in the sealing chamber 1 is quickly discharged through the jet pipe through the cooperation of the outer tube and the inner tube, so as to realize efficient and automatic air blowing and cleaning of the test slot after opening, remove impurities and debris inside the test slot, improve the uniformity and adhesion effect of the reagent solution, improve the clarity of subsequent observation and detection, and improve the detection accuracy. At the same time, when the compressed gas inside the sealing chamber 1 is discharged, the liquid path cavity will be connected with the liquid spray pipe, so as to realize the automatic spraying of the detection solution on the inside of the cleaned test slot after the air blowing and cleaning is completed, realize the automation of the durability detection of the anti-collision wall, significantly improve the detection speed and the clarity of the subsequent observation and detection records, and improve the efficiency and quality of the overall detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is an overall schematic diagram provided by an embodiment of the present invention.

[0025] Figure 2 It is an overall schematic diagram of a slide provided in an embodiment of the present invention.

[0026] Figure 3 It is a schematic diagram of the interior of the slide provided by an embodiment of the present invention.

[0027] Figure 4 It is a schematic diagram of the interior of the sleeve provided in an embodiment of the present invention.

[0028] Figure 5 It is a schematic diagram of the interior of the sleeve and the support rod provided in an embodiment of the present invention.

[0029] Figure 6 The present invention Figure 5 An enlarged schematic diagram of point A.

[0030] Figure 7 It is a schematic diagram of the interior of the arc valve provided in an embodiment of the present invention.

[0031] Figure 8 It is a schematic diagram of the interior of the outer tube provided in an embodiment of the present invention.

[0032] Fig. 9 It is a schematic diagram of the interior of the second sealed chamber provided in an embodiment of the present invention.

[0033] Fig.10 It is a schematic diagram of the overall disassembly of a valve block provided in an embodiment of the present invention.

[0034] Legend:

[0035] 100, support frame; 101, guide rail; 102, teeth; 200, slide seat; 201, linear motor; 202, drive motor; 203, auger; 204, travel motor; 205, air groove; 206, piston block 1; 207, turntable; 208, drive gear; 209, transmission gear; 210, pump air pipe; 300, sleeve; 301, support rod; 302, liquid storage tank; 303, sealing chamber 1; 304, slider; 305, piston block 2; 306, connecting pipe; 307, valve block 1; 308, seal Sealing chamber 2; 309, outer tube; 310, inner tube; 311, valve block 2; 312, piston tube; 313, pump liquid tube; 314, spray liquid tube; 315, jet tube; 316, switch; 317, liquid path chamber; 318, piston rod; 319, arc valve; 320, magnetic piston; 321, arc magnetic block; 322, connecting groove 1; 323, connecting groove 2; 324, connecting groove 3; 325, block; 326, rectangular groove; 327, connecting hole; 328, sealing block; 329, magnetic block 1; 330, magnetic block 2. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0037] Reference Figure 1-10 The present invention provides a durability performance testing device for concrete bridge anti-collision walls, including a support frame 100, the support frame 100 is connected to a guide rail 101, the side wall of the guide rail 101 is provided with teeth 102, a slide seat 200 is slidably connected to the guide rail 101, a linear motor 201 and a travel motor 204 are provided on the top of the slide seat 200, a driving motor 202 is fixedly connected to the top of the linear motor 201, an auger 203 is connected to the output end of the driving motor 202, sleeves 300 are designed on both sides of the driving motor 202, and the sleeves 304 are provided on the top of the linear motor 201. A sealed chamber 303 is provided inside the sleeve 300, a piston block 305 and a slider 304 are sleeved inside the sealed chamber 303, a support rod 301 extending to the outside of the sleeve 300 is provided on the side wall of the slider 304, a connecting pipe 306 penetrating through the piston block 305 and extending to the inside of the support rod 301 is provided on the side wall of the piston block 305, a spring is provided between the piston block 305 and the inner side wall of the sealed chamber 303, a spring is also provided between the piston block 305 and the slider 304, and the sleeve 300 is also provided with:

[0038] A driving mechanism, used for driving the slide 200 to move and storing gas inside the sealed chamber 303;

[0039] The air-jet mechanism provides different degrees of air blowing during the drilling and slotting process of the auger 203 and the exit process after the slotting is completed;

[0040] Liquid spraying mechanism, which performs reagent spraying test after slotting is completed;

[0041] The driving mechanism includes a pump air pipe 210 opened inside the sleeve 300 and connected to the inside of the sealed chamber 303. The output end of the travel motor 204 is connected to a driving gear 208 that cooperates with the teeth 102. The interior of the slide 200 is connected to a transmission gear 209 and a rotating disk 207 through a set of rotating shafts. The driving gear 208 and the transmission gear 209 are meshed. The interior of the slide 200 is opened with an air groove 205. The interior of the air groove 205 is sleeved with a piston block 206. The piston block 206 and The turntables 207 are connected by a connecting rod to form a piston-connecting rod mechanism. The air groove 205 is provided with a one-way valve for air intake and a one-way valve for exhaust. The exhaust one-way valve on the air groove 205 is connected to the pump air pipe 210. The inner wall of the sealing cavity 1 303 is provided with a switch 316 that cooperates with the piston block 2 305. It should be noted that the switch 316 adopts an elastic design and still has a certain buffer stroke after being triggered to avoid blocking and restricting the movement of the piston block 2 305.

[0042] It should be noted that, by providing the support rod 301, a support effect can be provided for the detection slot opening process, thereby improving the stability of the slot opening work.

[0043] Reference Figure 2-10 The jet mechanism includes a sealing chamber 308 opened inside the support rod 301, a valve block 307 is arranged at one end of the connecting pipe 306 extending to the sealing chamber 308, a valve block 311 is sleeved inside the sealing chamber 308, an inner tube 310 is arranged at one end of the valve block 311 away from the valve block 307, an outer tube 309 is sleeved on the outer side of the inner tube 310, the outer tube 309 is sleeved inside the support rod 301, and a spring is arranged between the outer tube 309 and the support rod 301, a jet pipe 315 is arranged on the side wall of the support rod 301, the jet pipe 315 extends to the inside of the support rod 301 and is connected with the outer tube 309, and a connecting valve assembly is arranged inside the valve block 307.

[0044] Furthermore, the side wall of the inner tube 310 is provided with multiple groups of connecting grooves 1 322 , the inner side wall of the outer tube 309 is provided with connecting grooves 2 323 matching with the connecting grooves 1 322 , and the inner side wall of the outer tube 309 is also provided with connecting grooves 3 324 matching with the connecting grooves 1 322 .

[0045] It should be noted that the number of the second connecting grooves 323 is less than the number of the first connecting grooves 322, and the distance between the second connecting grooves 323 and the third connecting grooves 324 is greater than the length of the first connecting grooves 322. In the initial position, the number of the second connecting grooves 323 is less than the number of the first connecting grooves 322. Therefore, the flow cross-sectional area between the inner tube 310 and the outer tube 309 is limited, which limits the discharge speed of the compressed gas, in order to save the compressed gas. When the first connecting groove 322 is connected to the third connecting groove 324 in the later stage, the storage gas inside the sealed cavity 303 can be increased by increasing the flow cross-sectional area. The stored compressed gas is quickly discharged to efficiently blow the area after the slotting, so that continuous blowing assistance can be performed in the early stage of the slotting work of the auger 203, and concrete debris and particle impurities generated by the slotting can be blown away in time to keep the slotting area clean, improve the slotting efficiency, and assist the auger 203 in heat dissipation. After the auger 203 exits the process in the later stage, the blowing volume is increased to efficiently blow the slotting area to remove impurities and debris, improve the uniformity of the reagent solution and the adhesion effect, improve the clarity of subsequent observation and detection, and improve the detection accuracy.

[0046] Reference Figure 9-10 The connecting valve assembly includes a connecting hole 327 opened inside the valve block 307 and connected with the connecting pipe 306. The valve block 307 is slidably connected inside with a blocking block 328 that cooperates with the connecting hole 327. A spring is provided on the side wall of the blocking block 328. A rectangular groove 326 that cooperates with the valve block 311 is opened on the side of the valve block 307 close to the valve block 311. A magnetic block 330 is provided on the inner side of the valve block 311. A magnetic block 329 that cooperates with the magnetic block 330 is also provided on the side wall of the blocking block 328.

[0047] Furthermore, a clamping block 325 cooperating with the valve block 2 311 and the valve block 1 307 is provided on the inner wall of the sealing chamber 2 308, a spring is provided between the valve block 2 311 and the sealing chamber 2 308, and the portion of the clamping block 325 extending to the inside of the sealing chamber 2 308 is inclined, aiming to restrict the valve block 2 311 in the initial state, and prevent the valve block 2 311 from being affected by the magnetic force of the valve block 1 307. Only when the sleeve 300 moves toward the wall, so that the sleeve 300 and the support When the rod 301 moves further relative to each other, the support rod 301 and the valve block 1 307 also move relative to each other, so that the valve block 2 311 moves toward the valve block 1 307 as a whole. When the valve block 1 307 with a contour larger than the valve block 2 311 passes by, the clamping block 325 can be pushed toward the inside of the support rod 301 to release the restriction on the valve block 2 311 and drive the valve block 2 311 to move. When the valve block 2 311 rebounds and resets, it can also be reset by the inclined design of the clamping block 325.

[0048] Reference Figure 2-7The liquid spraying mechanism includes a liquid storage tank 302 arranged on the side wall of the sleeve 300, a pump liquid pipe 313 is provided inside the slider 304, a piston tube 312 cooperating with the pump liquid pipe 313 is provided inside the liquid storage tank 302, a one-way valve for supplying liquid toward the pump liquid pipe 313 is provided inside the piston tube 312, a liquid path cavity 317 is provided inside the support rod 301, a piston rod 318 cooperating with the liquid path cavity 317 is provided on the side wall of the outer tube 309, a group of one-way valves for preventing backflow are provided between the pump liquid pipe 313 and the liquid path cavity 317, an arc valve 319 cooperating with the liquid path cavity 317 is provided inside the support rod 301, and a liquid spraying pipe 314 is provided on the side wall of the support rod 301, and one end of the liquid spraying pipe 314 extends to the inside of the support rod 301 and cooperates with the arc valve 319.

[0049] Furthermore, a channel connecting the liquid path cavity 317 and the liquid spray pipe 314 is provided inside the arc valve 319, a magnetic piston 320 is sleeved on the inner side of the arc valve 319, a spring is provided between the magnetic piston 320 and the inner wall of the arc valve 319, and an arc-shaped magnetic block 321 is provided on the side wall of the inner tube 310, and the arc-shaped magnetic block 321 cooperates with the magnetic piston 320.

[0050] It should be noted that the magnetic pistons 320 are symmetrically designed to have two groups, which cooperate with the liquid path cavity 317 and the liquid spraying pipe 314 respectively.

[0051] The working process of the device for testing the durability of concrete bridge crash walls is as follows:

[0052] First, the entire device is clamped and fixed to the anti-collision wall through the support frame 100. During the inspection, the travel motor 204 is first started. The output end of the travel motor 204 drives the driving gear 208 to rotate. The driving gear 208 is meshed with the teeth 102 to drive the slide 200 to slide and move forward at a uniform speed on the surface of the guide rail 101. In this process, the meshing of the driving gear 208 and the transmission gear 209 can drive the transmission gear 209 to accelerate the rotation, and then drive the turntable 207 to rotate. A group of piston-connecting rod mechanisms is formed by the cooperation between the turntable 207, the piston block 206 and the air groove 205. The gas can be continuously sucked in through the one-way valve provided in the air groove 205 and pumped into the sealed part through the pump air pipe 210. The piston block 2 305 is pushed inside the chamber 1 303 to move toward the slider 304, so that the spring between the piston block 2 305 and the sealed chamber 1 303 is stretched, and the spring between the piston block 2 305 and the slider 304 is compressed. The total amount of gas pumped into the sealed chamber 1 303 pushes the piston block 2 305 to move to the trigger switch 316, and then a slotting detection work is performed. At this time, the valve block 1 307 moves close to the valve block 2 311 without contacting it. During this process, the traveling motor 204 first stops running for a certain period of time, and then the linear motor 201 and the driving motor 202 are energized. The driving motor 202 is energized to drive the auger 203 to rotate, and the linear motor 201 is energized to drive the driving motor 202 toward the wall. The detection slot is opened by moving forward. During this process, the support rod 301 first contacts the wall. As the linear motor 201 continues to move, the sleeve 300 and the support rod 301 move relatively until the end of the spiral drill 203 contacts the wall and continues to penetrate a certain distance, and an automatic slotting operation is performed. At this time, as the support rod 301 and the sleeve 300 move relative to each other, the valve block 2 311 and the valve block 1 307 also move relative to each other, so that the valve block 1 307 passes through the block 325 and contacts the valve block 2 311. Since the rectangular slot 326 and the end of the valve block 2 311 are designed with mutually matching magnetic poles, after breaking through the obstruction of the block 325, the valve block 2 311 and the valve block 1 307 attract and cooperate, and the magnetic block Under the attraction of magnetic block 2 330, blocking block 328 moves toward magnetic block 2 330, removing the obstruction to connecting hole 327, so that connecting pipe 306 and inner tube 310 are connected through connecting hole 327, thereby allowing compressed gas inside sealing chamber 1 303 to circulate and enter the inner tube 310, further enter the outer tube 309 through connecting groove 2 323 and connecting groove 1 322, and be discharged through jet pipe 315, to purge the area where the auger 203 contacts the wall, to remove concrete debris generated in the initial stage of grooving, to keep the grooving area clean, to facilitate the grooving work, to improve the grooving efficiency, and at the same time to assist in cooling the auger 203.

[0053] It should be noted that the internal pressure required by the piston block 205 each time the switch 316 is triggered, that is, the total amount of gas filled in, tends to be consistent. Therefore, every time the driving gear 208 rotates approximately the number of circles to drive the slide 200 to move a specified distance, it will drive the transmission gear 209 to rotate faster so that the piston block 1 206 completes a specified number of pumping times, thereby satisfying the total amount of gas filled in. Therefore, it is possible to automatically perform a slotting detection stroke after moving a specified distance, thereby realizing equidistant automatic detection.

[0054] During this process, when the support rod 301 and the sleeve 300 move relative to each other, the piston tube 312 will also move relative to the slider 304, so that the internal pressure of the pump liquid tube 313 is reduced. The detection reagent inside the liquid storage tank 302 can be sucked into the pump liquid tube 313 through the one-way valve inside the piston tube 312, and the spring between the piston block 305 and the slider 304 is further compressed.

[0055] It should be noted that as the compressed gas inside the sealing chamber 303 is discharged, the piston block 305 moves and resets, and at the same time drives the valve block 307 to move and reset. Due to the adsorption cooperation between the valve block 307 and the valve block 311, the valve block 307 will drive the valve block 2 311 and the inner tube 310 to move synchronously. When the inner tube 310 moves to the connecting groove 1 322 and passes through the connecting groove 2 323 and has not yet contacted and connected with the connecting groove 3 324, the compressed gas inside the sealing chamber 303 cannot be discharged through the connecting groove 1 322, thereby providing continuous purge assistance in the early stage of the grooving work, stopping the purge in the later stage of the grooving work, and storing the gas.

[0056] Furthermore, after the slotting work is completed, during the resetting process of the linear motor 201, the auger 203 first gradually breaks away from the contact with the wall and leaves the opened detection slot. During the synchronous movement and resetting process of the sleeve 300 and the linear motor 201, the slider 304 moves and resets toward the liquid storage tank 302 under the elastic force of the spring between the slider 304 and the piston block 2 305. Through the cooperation between the pump liquid tube 313 and the piston tube 312, the reagent solution inside the pump liquid tube 313 is pumped into the liquid path cavity 317 through the one-way valve inside the pump liquid tube 313, pushing the piston rod 318 to further push the outer tube 309 to move, so that the outer tube 309 The spring between the outer tube 309 and the support rod 301 is compressed, and during the movement of the outer tube 309, the connecting groove three 324 can be connected with the connecting groove one 322. Furthermore, the pressurized gas inside the sealing chamber 1 303 can be quickly ejected from the jet pipe 315 through the connection between the connecting groove one 322 and the connecting groove three 324, so that the jet pipe 315 blows and cleans the area left by the spiral drill 203 after grooving, thereby realizing efficient blowing and cleaning of the detection groove during the resetting process after grooving, removing impurities and debris inside the detection groove, improving the uniformity of the reagent solution and the adhesion effect, improving the clarity of subsequent observation and detection, and improving the detection accuracy.

[0057] Furthermore, as the gas inside the sealing chamber 1 303 is quickly discharged, the piston block 2 305 is also reset under the elastic force of the spring between the sealing chamber 1 303, further driving the connecting pipe 306 and the valve block 1 307 to move and reset. When the valve block 1 307 drives the valve block 2 311 to move a distance exceeding the elastic force limit of the spring between the valve block 2 311 and the sealing chamber 2 308 through magnetic force, the valve block 2 311 is reset under the action of the spring elastic force and disengaged from the magnetic force connection with the valve block 1 307. At the same time, the valve block 2 311 is reset to the initial position. After the valve block 2 311 is reset to the initial position, the arc-shaped magnetic block 321 just moves to the position corresponding to the position of the magnetic piston 320. Under the magnetic force of the arc-shaped magnetic block 321 Under the action of attraction, the magnetic piston 320 moves toward the arc-shaped magnetic block 321, compressing the spring between the magnetic piston 320 and the inner side of the arc-shaped valve 319, so that the magnetic piston 320 releases the blockage of the liquid path cavity 317 and the spray pipe 314, and the liquid path cavity 317 and the spray pipe 314 are connected. Under the elastic force of the spring between the outer tube 309 and the support rod 301, the outer tube 309 and the piston rod 318 are reset, and the reagent solution inside the liquid path cavity 317 is pumped into the spray pipe 314 through the arc-shaped valve 319, and finally the reagent solution is sprayed into the detection tank through the one-way valve at the outlet of the spray pipe 314, thereby realizing automatic spraying after the detection tank is opened and cleaned, and realizing automatic detection of the durability performance of the anti-collision wall.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for testing the durability of concrete bridge crash barriers, comprising a support frame (100), characterized in that: The support frame (100) is connected to a guide rail (101), and teeth (102) are provided on the side wall of the guide rail (101). A slide seat (200) is slidably connected to the guide rail (101), and a linear motor (201) and a travel motor (204) are provided on the top of the slide seat (200). A drive motor (202) is fixedly connected to the top of the linear motor (201), and an auger (203) is connected to the output end of the drive motor (202). Sleeves (300) are provided on both sides of the drive motor (202), and a sealed cavity (304) is provided inside the sleeve (300). 3), the interior of the sealing chamber 1 (303) is sleeved with a piston block 2 (305) and a slider (304), the side wall of the slider (304) is provided with a support rod (301) extending to the outside of the sleeve (300), the side wall of the piston block 2 (305) is provided with a connecting pipe (306) penetrating through the piston block 2 (305) and extending to the inside of the support rod (301), a spring is provided between the piston block 2 (305) and the inner wall of the sealing chamber 1 (303), a spring is also provided between the piston block 2 (305) and the slider (304), and the interior of the sleeve (300) is also provided with: A driving mechanism, used for driving the slide seat (200) to move and storing gas inside the sealed chamber 1 (303); The air-jet mechanism provides different degrees of air blowing during the auger (203) drilling and slotting process and the slotting completion and exit process; Liquid spraying mechanism, which performs reagent spraying test after slotting is completed; The driving mechanism comprises a pump air pipe (210) provided inside the sleeve (300) and communicating with the inside of the sealed chamber (303); the output end of the travel motor (204) is connected with a drive gear (208) cooperating with the teeth (102); the inside of the slide seat (200) is connected with a transmission gear (209) and a rotating disk (207) via a set of rotating shafts; the drive gear (208) and the transmission gear (209) are meshed; an air groove (205) is provided inside the slide seat (200); a piston block (206) is sleeved inside the air groove (205); the piston block (206) and the rotating disk (207) are connected and cooperated with each other via a connecting rod; the air groove (205) is communicated with the pump air pipe (210); and the inner side wall of the sealed chamber (303) is provided with a switch (316) cooperating with the piston block (305).

2. The durability testing device for concrete bridge crash barriers according to claim 1 is characterized in that: The jet mechanism comprises a sealed chamber 2 (308) provided inside the support rod (301); a valve block 1 (307) is provided at one end of the connecting pipe (306) extending into the sealed chamber 2 (308); a valve block 2 (311) is sleeved inside the sealed chamber 2 (308); an inner tube (310) is provided at one end of the valve block 2 (311) away from the valve block 1 (307); an outer tube (309) is sleeved on the outer side of the inner tube (310); the outer tube (309) is sleeved inside the support rod (301); a spring is provided between the outer tube (309) and the support rod (301); a jet tube (315) is provided on the side wall of the support rod (301); the jet tube (315) extends into the interior of the support rod (301) and communicates with the outer tube (309); and a connecting valve assembly is provided inside the valve block 1 (307).

3. The durability testing device for concrete bridge crash barriers according to claim 2 is characterized in that: The side wall of the inner tube (310) is provided with a plurality of groups of communication grooves 1 (322), the inner side wall of the outer tube (309) is provided with communication grooves 2 (323) that cooperate with the communication grooves 1 (322), and the inner side wall of the outer tube (309) is further provided with communication grooves 3 (324) that cooperate with the communication grooves 1 (322).

4. The durability testing device for concrete bridge crash barriers according to claim 3 is characterized in that: The number of the second connecting grooves (323) is less than the number of the first connecting grooves (322), and the length of the spacing between the second connecting grooves (323) and the third connecting grooves (324) is greater than the length of the first connecting groove (322).

5. The durability testing device for concrete bridge crash barriers according to claim 2 is characterized in that: The connecting valve assembly comprises a connecting hole (327) provided inside the valve block 1 (307) and connected to the connecting pipe (306); a sealing block (328) matching with the connecting hole (327) is slidably connected inside the valve block 1 (307); a side wall of the sealing block (328) is provided with a spring; a rectangular groove (326) matching with the valve block 2 (311) is provided on a side of the valve block 1 (307) close to the valve block 2 (311); a magnetic block 2 (330) is provided on the inner side of the valve block 2 (311); and a magnetic block 1 (329) matching with the magnetic block 2 (330) is also provided on the side wall of the sealing block (328).

6. The durability testing device for concrete bridge crash barriers according to claim 5 is characterized in that: The inner side wall of the second sealing chamber (308) is provided with a clamping block (325) that cooperates with the second valve block (311) and the first valve block (307), and a spring is provided between the second valve block (311) and the second sealing chamber (308).

7. The durability testing device for concrete bridge crash barriers according to claim 2 is characterized in that: The liquid spraying mechanism comprises a liquid storage box (302) arranged on the side wall of the sleeve (300); a liquid pumping tube (313) is provided inside the slider (304); a piston tube (312) cooperating with the liquid pumping tube (313) is provided inside the liquid storage box (302); a liquid path cavity (317) is provided inside the support rod (301); a piston rod (318) cooperating with the liquid path cavity (317) is provided on the side wall of the outer tube (309); an arc valve (319) cooperating with the liquid path cavity (317) is provided inside the support rod (301); a liquid spraying tube (314) is provided on the side wall of the support rod (301); one end of the liquid spraying tube (314) extending to the inside of the support rod (301) is cooperating with the arc valve (319).

8. The durability testing device for concrete bridge crash barriers according to claim 7 is characterized in that: The arc valve (319) is provided with a channel connecting the liquid path cavity (317) and the liquid spraying pipe (314) inside. The inner side of the arc valve (319) is sleeved with a magnetic piston (320). A spring is provided between the magnetic piston (320) and the inner side wall of the arc valve (319). The side wall of the inner tube (310) is provided with an arc-shaped magnetic block (321), and the arc-shaped magnetic block (321) cooperates with the magnetic piston (320).

9. The durability testing device for concrete bridge crash barriers according to claim 8, characterized in that: The magnetic pistons (320) are symmetrically designed to have two groups, which cooperate with the liquid path cavity (317) and the liquid spraying pipe (314) respectively.

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