A joint assembly testing machine
By integrating rainwater, dust, and temperature simulation components into the expansion joint assembly testing machine, the problem of traditional testing machines being unable to accurately measure the performance of expansion joints has been solved, enabling efficient testing under various environmental conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-07
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional expansion joint testing machines cannot accurately measure the expansion and contraction performance of expansion joints in simulated real-world environments. Limited by a single pressurization method, they cannot take into account the effects of extreme weather and environmental factors.
An expansion joint assembly testing machine was designed, which includes a rain simulation component, a dust simulation component, and a temperature simulation component. It can simulate different weather conditions, apply pressure by driving a hydraulic cylinder, and conduct tests in combination with various environmental factors to improve data accuracy.
It enables accurate performance testing of expansion joints under simulated various severe weather conditions, improving the authenticity and reliability of test data.
Smart Images
Figure CN117169479B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of bridge and road construction technology, and in particular to an expansion joint assembly testing machine. Background Technology
[0002] To accommodate bridge deck deformation, expansion joints are typically installed between the ends of two beams, between the beam end and the abutment, or at the hinged joints of the bridge. These expansion joints must be able to expand and contract freely in two directions, parallel and perpendicular to the bridge axis, be robust and reliable, and allow vehicles to pass smoothly without bumps or noise. They must also prevent rainwater and debris from seeping in and causing blockages. Installation, inspection, maintenance, and cleaning should all be simple and convenient.
[0003] Expansion joint assembly devices are mainly used for compressive performance tests to determine the assembly tolerance dimensions of expansion joint devices in the field of bridge expansion. They can simulate the actual stress state of expansion devices on highway bridges and can be used for testing specimens such as single-joint modulus test devices and multi-joint modulus test devices.
[0004] Traditional assembly tests involve applying pressure directly to both sides of the expansion joint, using different levels of pressure to alter the expansion and contraction of the joint, thus obtaining test results. However, in practical applications of expansion joints, various extreme weather conditions and environments can affect the expansion and contraction performance of the joint, so simply applying pressure cannot yield the most accurate data. Summary of the Invention
[0005] (a) Technical problems to be solved
[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an expansion joint assembly testing machine, which solves the technical problem that expansion joint tests cannot obtain the most accurate expansion and contraction data of expansion joints.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, the main technical solutions adopted by the present invention include:
[0009] This invention provides an expansion joint assembly testing machine, comprising a horizontally arranged test base, drive cylinders arranged opposite each other on the upper surface of the test base, expansion joint clamping frames respectively disposed on the piston rods of the two sets of drive cylinders, and an environmental simulation chamber disposed on the upper end of the test base and covering the expansion joint clamping frames. A clamping groove for clamping the expansion joint is formed between the two expansion joint clamping frames. The environmental simulation chamber is provided with a rainwater simulation component for spraying water at the clamping groove, a dust simulation component for spraying dust at the clamping groove, and a temperature simulation component for heating or cooling the expansion joint clamped in the clamping groove. The rainwater simulation component, the dust simulation component, and the temperature simulation component can operate independently, any two sets can operate in combination, or they can operate simultaneously.
[0010] This invention discloses an expansion joint assembly testing machine. When using this machine, the expansion joint is horizontally placed between two expansion joint clamping frames. Then, the expansion joint clamping frames are driven by a hydraulic cylinder to clamp and fix the expansion joint. At the same time, the hydraulic cylinder drives the expansion joint clamping frames to apply a certain pressure to the expansion joint. Subsequently, the expansion joint is periodically watered by a rain simulation component, dust is sprayed onto the expansion joint by a dust simulation component, and summer and winter temperatures are simulated by a temperature simulation component. This allows the expansion joint in the test to withstand various harsh weather conditions, just like an expansion joint used outdoors. Furthermore, the rain simulation component, dust simulation component, and temperature simulation component can work in pairs or even in all three groups simultaneously, making the environment of the expansion joint closer to the natural environment, thereby improving the accuracy of the expansion joint expansion data.
[0011] Optionally, the rainwater simulation component includes a water nozzle that moves in an arc along the inner wall of the environmental simulation chamber above the clamping groove. The water nozzle moves in a serpentine manner in the direction perpendicular to its own direction of movement, and the outlet of the water nozzle always points towards the clamping groove.
[0012] By setting the movement trajectory of the spray nozzle to reciprocate in an arc on the upper side of the clamping groove, and while the spray nozzle is reciprocating in an arc, it also moves in a serpentine manner along the direction perpendicular to its own movement direction, while keeping the outlet of the spray nozzle always pointing towards the clamping groove, the spray nozzle can spray water into the expansion joint clamped in the clamping groove from various directions, thereby improving the realism of the rainwater simulation component in simulating rainwater and improving the accuracy of the expansion joint expansion data.
[0013] Optionally, the top of the inner wall of the environmental simulation chamber is provided with a serpentine slide rail, the slide rail being arc-shaped in both its length and width directions, and the water spray nozzle is slidably connected to the lower end of the slide rail.
[0014] By setting up serpentine slide rails in the environmental simulation chamber, with the slide rails being arc-shaped along their length and width, the water nozzles can continuously keep their outlets aligned with the expansion joints in the clamping grooves when moving, thus ensuring the realism of the rainwater simulation component and improving the accuracy of the expansion joint expansion data.
[0015] Optionally, the top of the environmental simulation chamber is provided with an arc-shaped sliding hole, and a movable block that slides along the length direction of the arc-shaped sliding hole is slidably connected to one side of the top of the environmental simulation chamber. A transverse slide is provided between the inner wall of the environmental simulation chamber and the slide rail, which moves together with the movable block. The length direction of the transverse slide is perpendicular to the length direction of the slide rail. The transverse slide is arc-shaped along its own length direction. The upper end of the water nozzle is provided with a slide rod that slides along the length direction of the transverse slide and is connected to the lower end of the transverse slide. A groove is provided in the middle of the slide rail along its own length direction for the slide rod to pass through and slide.
[0016] By moving a movable block at the top of the environmental simulation chamber, the transverse slide rail moves along the length of the arc-shaped sliding hole. During this movement, the slide rod and the water nozzle on the lower side of the slide rod move together. At the same time, the slide rod is inserted into the groove of the slide rail. Under the limit of the slide rail, the slide rod moves along the length of the arc-shaped sliding hole on one hand, and reciprocates horizontally along the length of the transverse slide rail on the other hand. When the slide rod reciprocates along the transverse slide rail, it will rub against the inner wall of the groove, causing the lower end of the slide rod to tilt slightly in the opposite direction of movement, thereby tilting the water nozzle and realizing the double arc-shaped serpentine reciprocating movement of the water nozzle. This ensures the realism of the rain simulation component in simulating rainwater and improves the accuracy of the expansion joint expansion data.
[0017] Optionally, the dust simulation component includes a transmission ring disposed inside the environment simulation chamber and a blower disposed outside the environment simulation chamber. The air outlet of the blower is provided with a connecting pipe connected to the transmission ring. Dust outlets are evenly spaced on the inner peripheral wall of the transmission ring. A filler funnel for adding dust is provided on the upper end of the connecting pipe.
[0018] When using the dust simulation component, dust is added directly into the filler funnel, and then blown by a blower. The blower blows the dust directly into the transfer ring, and the transfer ring blows the dust out through the dust outlet. This allows the dust to come into contact with the expansion joint from all directions, enabling the dust simulation component to more accurately simulate the effect of outdoor dust and improve the accuracy of the expansion joint's expansion and contraction data.
[0019] Optionally, the dust outlet is tilted to one side.
[0020] By tilting the dust outlet to one side, the dust blown out through the outlet will form a vortex in the environmental simulation chamber, causing the dust to be blown to various positions of the expansion joint in a vortex manner, thereby more accurately simulating the effect of dust in the outdoor environment and improving the accuracy of the expansion joint expansion data.
[0021] Optionally, the temperature simulation component includes a high and low temperature integrated machine disposed outside the environmental simulation chamber, a temperature-conducting plate connected to the expansion joint clamping frame, and a temperature-conducting pipe connected to the high and low temperature integrated machine and the temperature-conducting plate.
[0022] The high and low temperature integrated enclosure creates a temperature environment, and then the temperature is transferred to the temperature-conducting plate through the temperature-conducting pipe. The temperature-conducting plate then transfers the temperature to the expansion joint clamping frame, and finally the expansion joint clamping frame evenly transfers the temperature to the expansion joint, thereby ensuring that the overall temperature of the expansion joint changes, which is more in line with the temperature changes in the natural environment, thus improving the accuracy of the expansion joint expansion data.
[0023] Optionally, the temperature simulation component further includes two daylight simulation lamps that are tilted inside the environment simulation chamber, and the daylight simulation lamps illuminate the expansion joint.
[0024] In the natural environment, not only temperature changes, but also sunlight can affect the performance of expansion joints. This solution uses two sunlight simulation lamps arranged at an angle in the environmental simulation chamber to simulate sunlight, thereby achieving a more realistic environmental simulation effect and improving the accuracy of expansion joint expansion data.
[0025] Optionally, the test base includes multiple horizontally and parallelly arranged I-beams, channel steels horizontally and vertically connected to both ends of the multiple I-beams, and a guide rail disposed on the upper end of the I-beams. The lower end of the expansion joint clamp is provided with a slide that moves along the length of the guide rail, and a waste pool for holding wastewater and dust is provided on the lower side of the I-beams.
[0026] When using rainwater simulation, dust simulation, and temperature simulation components, rainwater mixes with dust to form muddy water, which, after drying for a period of time, turns into mud lumps, making the entire testing machine quite dirty. In this solution, the entire testing base is set up with parallel I-beams and channel steel vertically connected to both ends of the I-beams, so that the upper and lower ends of the testing base are connected. When water and dust are sprayed, excess water and dust will fall directly into the waste pool. At the same time, after the expansion joint test is completed, the muddy water on the surface of the expansion joint can be cleaned directly on the upper side of the testing base, which is more convenient.
[0027] Optionally, the environmental simulation chamber is detachably connected to the upper end of the test base, and a clearance slot is provided on the side end of the environmental simulation chamber for the piston rod of the drive cylinder to be inserted.
[0028] By detachably connecting the environmental simulation chamber to the upper part of the test base, it is more convenient to replace the expansion joint, and the slot on the side of the environmental simulation chamber will not affect the movement of the piston rod of the drive cylinder.
[0029] (III) Beneficial Effects
[0030] The beneficial effects of this invention are as follows: When using the expansion joint assembly testing machine of this invention, the expansion joint is horizontally placed between two expansion joint clamping frames. Then, the expansion joint clamping frames are driven by a driving cylinder to clamp and fix the expansion joint. At the same time, the expansion joint clamping frames are driven by a driving cylinder to apply a certain pressure to the expansion joint. Subsequently, the expansion joint is periodically watered by a rain simulation component, dust is sprayed onto the expansion joint by a dust simulation component, and summer and winter temperatures are simulated by a temperature simulation component. This allows the expansion joint in the test to withstand various harsh weather conditions, just like an expansion joint used outdoors. At the same time, the rain simulation component, dust simulation component, and temperature simulation component can work in pairs or even three sets simultaneously, making the environment of the expansion joint closer to the natural environment, thereby improving the accuracy of the expansion joint expansion data. Attached Figure Description
[0031] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present invention;
[0032] Figure 2 This is a cross-sectional view of an embodiment of the present invention;
[0033] Figure 3 This is an exploded view diagram of an embodiment of the present invention;
[0034] Figure 4 This is a schematic diagram of the internal structure of the environmental simulation chamber in an embodiment of the present invention.
[0035] [Explanation of Labels in the Attached Image]
[0036] 1. Test base; 11. I-beam; 12. Channel steel; 13. Guide rail; 14. Support column; 15. Waste pool; 2. Drive cylinder; 3. Expansion joint clamping frame; 31. Slide; 32. Clamping slot; 4. Environmental simulation chamber; 41. Clearance slot; 42. Rainwater simulation component; 421. Rack; 422. Moving block; 423. Drive motor; 424. Gear; 425. Transverse slide; 426. Guide rail 427. Water spray nozzle; 4271. Slide rod; 428. Slide rail; 4281. Slide groove; 43. Dust simulation component; 431. Transfer ring; 4311. Dust outlet; 432. Blower; 433. Connecting pipe; 434. Packing funnel; 44. Temperature simulation component; 441. High and low temperature integrated unit; 442. Temperature conductive plate; 443. Temperature conductive pipe; 444. Daylight simulation lamp; 5. Arc-shaped sliding hole. Detailed Implementation
[0037] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0038] The expansion joint assembly testing machine proposed in this invention involves placing the expansion joint horizontally between two expansion joint clamping frames. A driving cylinder then moves the clamping frames to hold and fix the expansion joint, applying pressure to it. The expansion joint is then periodically watered using a rain simulation component, dust is sprayed onto it using a dust simulation component, and summer and winter temperatures are simulated using a temperature simulation component. This allows the expansion joint to withstand various harsh weather conditions, similar to an outdoor expansion joint. Furthermore, the rain, dust, and temperature simulation components can work in pairs or even in triplicate, making the environment of the expansion joint more closely resemble the natural environment and thus improving the accuracy of the expansion joint data.
[0039] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.
[0040] Reference Figure 1 and Figure 2 An expansion joint assembly testing machine includes a horizontally arranged test base 1, drive cylinders 2 arranged opposite each other on the upper surface of the test base 1, expansion joint clamping frames 3 each arranged on the piston rods of the two sets of drive cylinders 2, and an environmental simulation chamber 4 arranged on the upper end of the test base 1 and covering the expansion joint clamping frames 3.
[0041] join Figure 2 and Figure 3 The test base 1 includes multiple horizontally and parallel H-beams 11, channel steels 12 horizontally and vertically welded to both ends of the H-beams 11, guide rails 13 welded to the upper ends of the H-beams 11, and support columns 14 vertically welded to both ends of the channel steels 12 and supported on the ground. A slide block 31, which moves along the length of the guide rail 13, is bolted to the lower end of the expansion joint clamping frame 3. The expansion joint clamping frame 3 is arranged horizontally and perpendicularly to the H-beams 11. Two sets of drive cylinders 2 are bolted to the sides of the two channel steels 12 that are close to each other. The piston rods of the two sets of drive cylinders 2 are each bolted to the sides of the two expansion joint clamping frames 3 that are far apart from each other. A clamping groove 32 for clamping the expansion joint is formed between the two expansion joint clamping frames 3. This allows the drive cylinders 2 to drive the expansion joint clamping frames 3 to clamp and fix the expansion joint, and also allows the drive cylinders 2 to apply a certain pressure to the expansion joint.
[0042] The lower side of the I-beam 11 is horizontally welded with a waste pool 15 for holding wastewater and dust. When water is sprayed and dust is sprayed, excess water and dust will fall directly into the waste pool 15. At the same time, after the expansion joint test is completed, the mud and water on the surface of the expansion joint can be cleaned directly on the upper side of the test base 1.
[0043] The environmental simulation chamber 4 is detachably connected to the upper end of the I-beam 11 by bolts. The side end of the environmental simulation chamber 4 is provided with a clearance slot 41 for the piston rod of the drive cylinder 2 to be inserted, which makes it more convenient to replace the expansion joint.
[0044] The environment simulation chamber 4 is equipped with a rainwater simulation component 42 that sprays water onto the clamping slot 32, a dust simulation component 43 that sprays dust onto the clamping slot 32, and a temperature simulation component 44 that heats or cools the expansion joint clamped in the clamping slot 32. The rainwater simulation component 42, the dust simulation component 43, and the temperature simulation component 44 can operate independently, any two of them can operate together, or they can operate simultaneously.
[0045] See Figure 2 , Figure 3 and Figure 4 The top of the environmental simulation chamber 4 is arc-shaped. An arc-shaped sliding hole 5 aligned with the clamping groove 32 is opened on the top of the environmental simulation chamber 4. An arc-shaped rack 421 is welded to one side of the arc-shaped sliding hole 5 on the top of the environmental simulation chamber 4. A moving block 422 that slides along the length of the arc-shaped sliding hole 5 is slidably connected to the top of the environmental simulation chamber 4 at the arc-shaped sliding hole 5. A drive motor 423 is fixed to the upper end of the moving block 422 by bolts. The drive motor 423 is arranged horizontally. A gear 424 that engages with the rack 421 is coaxially keyed to the output shaft of the drive motor 423. A transverse slide 425 that moves together with the moving block 422 is provided near the top wall of the environmental simulation chamber 4. A guide plate 426 that is fixed to the lower end of the moving block 422 by bolts is vertically welded to the middle of the upper end of the transverse slide 425. When the drive motor 423 is working, it drives the gear 424 to rotate. The gear 424 engages with the rack 421, so that the drive motor 423 will drive the moving block 422 to move along the length direction of the arc-shaped sliding hole 5 under the limit of the guide plate 426 and the transverse slide rail 428. Reversing the output shaft of the drive motor 423 will cause the moving block 422 to move in the opposite direction.
[0046] The length direction of the transverse slide 425 is perpendicular to the length direction of the slide rail 428, and the transverse slide 425 is arc-shaped along its own length direction.
[0047] The rain simulation component 42 includes a spray nozzle 427 and a slide rail 428. The slide rail 428 is located below the transverse slide rail 425 and its two ends are welded to the inner wall of the environmental simulation chamber 4. The slide rail 428 is arranged in a serpentine pattern along the length of the arc-shaped sliding hole 5. The slide rail 428 is arc-shaped in both its length and width directions. A serpentine groove 4281 is opened in the middle of the slide rail 428 along its own length direction. A slide rod 4271 is vertically welded to the upper end of the spray nozzle 427. The upper end of the slide rod 4271 passes through the groove 4281 and slides to connect to the transverse slide rail 425. A T-shaped groove with a cross section is opened at the lower end of the transverse slide rail 425 along its own length direction. A T-shaped block inserted into the groove is welded to the top of the slide rod 4271, and a ball bearing is rolled and embedded on the end face of the T-shaped block that contacts the inner wall of the groove to ensure that the slide rod 4271 can move back and forth along the length of the transverse slide rail 425. The moving block 422 causes the transverse slide 425 to move along the length of the arc-shaped sliding hole 5. During the movement, the slide rod 4271 and the water nozzle 427 on the lower side of the slide rod 4271 move together. At the same time, the slide rod 4271 is inserted into the groove 4281 of the slide rail 428. Under the limitation of the slide rail 428, the slide rod 4271 moves along the length of the arc-shaped sliding hole 5 on the one hand, and on the other hand, it moves back and forth horizontally along the length of the transverse slide 425. When the slide rod 4271 moves back and forth along the transverse slide 425, it will rub against the inner wall of the groove 4281, which will cause the lower end of the slide rod 4271 to tilt slightly in the opposite direction of movement, thereby tilting the water nozzle 427 so that the spray nozzle 427 can point to the clamping groove 32.
[0048] The dust simulation component 43 includes a transmission ring 431 fixed inside the environment simulation chamber 4 by bolts and a blower 432 fixed outside the environment simulation chamber 4 by bolts. The transmission ring 431 is annular tube. The air outlet end of the blower 432 is welded with a connecting pipe 433 connected to the transmission ring 431. Dust outlets 4311 are evenly spaced on the inner circumferential wall of the transmission ring 431. The upper end of the connecting pipe 433 is welded with a filler funnel 434 for adding dust. The dust outlets 4311 are tilted to one side. When using the dust simulation component 43, dust is directly added into the filler funnel 434, and then blown by the blower 432. The blower 432 blows the dust directly into the transmission ring 431, and then the transmission ring 431 blows the dust out along the dust outlet 4311. The dust outlet 4311 is tilted to one side, so that the dust blown out through the dust outlet 4311 will form a vortex in the environmental simulation chamber 4, so that the dust will be blown to various positions of the expansion joint in the vortex manner, thereby more accurately simulating the effect of outdoor environmental dust.
[0049] The temperature simulation component 44 includes a high-low temperature integrated unit 441 bolted to the outside of the environment simulation chamber 4, a temperature-conducting plate 442 bolted to the expansion joint clamping frame 3, a temperature-conducting pipe 443 connecting the high-low temperature integrated unit 441 and the temperature-conducting plate 442, and two daylight simulation lamps 444 bolted obliquely inside the environment simulation chamber 4. The daylight simulation lamps 444 illuminate the expansion joint. The high-low temperature integrated unit 441 creates a temperature environment, and then the temperature is transferred to the temperature-conducting plate 442 through the temperature-conducting pipe 443. The temperature-conducting plate 442 then transfers the temperature to the expansion joint clamping frame 3, and finally the expansion joint clamping frame 3 evenly distributes the temperature to the expansion joint. At the same time, the two daylight simulation lamps 444 simulate sunlight to achieve a more realistic environmental simulation effect.
[0050] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.
[0051] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0052] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0053] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0054] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. An expansion joint assembly testing machine, characterized in that: The test includes a horizontally arranged test base (1), two opposing drive cylinders mounted on the upper surface of the test base (1), expansion joint clamping frames (3) mounted on the piston rods of the two drive cylinders (2), and an environmental simulation chamber (4) mounted on the upper end of the test base (1) and covering the expansion joint clamping frames (3). A clamping groove (32) for clamping the expansion joint is formed between the two expansion joint clamping frames (3). The environmental simulation chamber (4) is equipped with a rainwater simulation component (42) that sprays water onto the clamping groove (32). The dust simulation component (43) for spraying dust and the temperature simulation component (44) for heating or cooling the expansion joint clamped in the clamping groove (32) are included. The rainwater simulation component (42), the dust simulation component (43), and the temperature simulation component (44) can operate independently, any two of them can operate together, or they can operate simultaneously. The rainwater simulation component (42) includes a water nozzle (427) that moves in an arc along the inner wall of the environment simulation chamber (4) on the upper side of the clamping groove (32). The water nozzle (427) moves in a serpentine manner in the direction perpendicular to its own direction of movement. The water outlet of 427) always points to the clamping groove (32). The top of the inner wall of the environmental simulation chamber (4) is provided with a serpentine slide rail (428). The slide rail (428) is arc-shaped in both its length and width directions. The water nozzle (427) is slidably connected to the lower end of the slide rail (428). The top of the environmental simulation chamber (4) is provided with an arc-shaped sliding hole (5). The top of the environmental simulation chamber (4) is slidably connected to a moving block (422) that slides along the length direction of the arc-shaped sliding hole (5) on one side. The environmental simulation chamber (4) is located on its inner wall and the... A transverse slide (425) is provided between the slide rails (428) and moves together with the moving block (422). The length direction of the transverse slide (425) is perpendicular to the length direction of the slide rail (428). The transverse slide (425) is arc-shaped along its own length direction. The upper end of the spray nozzle (427) is provided with a slide rod (4271) that slides along the length direction of the transverse slide (425) and is connected to the lower end of the transverse slide (425). The middle part of the slide rail (428) is provided with a groove (4281) along its own length direction for the slide rod (4271) to pass through and slide.
2. The expansion joint assembly testing machine as described in claim 1, characterized in that: The dust simulation component (43) includes a transmission ring (431) disposed inside the environment simulation chamber (4) and a blower (432) disposed outside the environment simulation chamber (4). The air outlet of the blower (432) is provided with a connecting pipe (433) connected to the transmission ring (431). The inner peripheral wall of the transmission ring (431) is provided with dust outlets (4311) evenly spaced apart. The upper end of the connecting pipe (433) is provided with a filler funnel (434) for adding dust.
3. The expansion joint assembly testing machine as described in claim 2, characterized in that: The dust outlet (4311) is tilted to one side.
4. The expansion joint assembly testing machine as described in claim 1, characterized in that: The temperature simulation component (44) includes a high and low temperature integrated machine (441) disposed outside the environment simulation chamber (4), a temperature-conducting plate (442) connected to the expansion joint clamp (3), and a temperature-conducting pipe (443) connected to the high and low temperature integrated machine (441) and the temperature-conducting plate (442).
5. The expansion joint assembly testing machine as described in claim 4, characterized in that: The temperature simulation component (44) also includes two daylight simulation lamps (444) that are tilted inside the environment simulation chamber (4) and illuminate the expansion joint.
6. The expansion joint assembly testing machine as described in claim 1, characterized in that: The test base (1) includes multiple I-beams (11) arranged horizontally and parallel to each other, channel steel (12) connected horizontally and vertically to both ends of the multiple I-beams (11), and guide rail (13) set on the upper end of the I-beams (11). The lower end of the expansion joint clamp (3) is provided with a slide (31) that moves along the length direction of the guide rail (13). The lower side of the I-beams (11) is provided with a waste pool (15) for holding wastewater and dust.
7. The expansion joint assembly testing machine as described in claim 1, characterized in that: The environmental simulation chamber (4) is detachably connected to the upper end of the test base (1), and the side end of the environmental simulation chamber (4) is provided with a clearance slot (41) for the piston rod of the drive cylinder (2) to be inserted.
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