Device for detecting compression set of rubber sealing tape of bridge expansion device

Abstract

The invention relates to a bridge expansion device rubber sealing belt compression permanent deformation detection device, and belongs to the technical field of rubber constant compression permanent deformation detection. The device comprises a storage box, a rubber sample transfer mechanism, a rubber sample holding assembly, a compression amount control assembly and a compressed rubber sample transfer measurement assembly. A plurality of rubber samples are stored in the storage box, and the rubber sample transfer mechanism is used for transferring the rubber samples in the storage box into the rubber sample holding assembly. And the rubber sample holding assembly is responsible for applying and keeping a specific compression amount to the rubber sample. The compression amount control assembly is used for adjusting the distance between the extrusion plate and the fixing plate. And the compressed rubber sample transferring and measuring assembly is arranged below the rubber sample holding assembly. According to the rubber sample detection device, automatic and continuous detection of a plurality of rubber samples is realized, and detection work can be carried out continuously, so that the labor intensity of detection personnel is reduced, and the detection efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of rubber constant compression permanent deformation detection, and specifically relates to a device for detecting the compression permanent deformation of a rubber sealing belt of a bridge expansion device. Background Art

[0002] The bridge expansion device is an indispensable part of the bridge structure. It is mainly used to solve the expansion and contraction problems of the bridge caused by factors such as temperature changes, load effects, and material aging. These factors will cause the length of the bridge to change. If not handled, it may cause serious consequences such as cracking and deformation of the bridge deck, thereby affecting driving safety and the service life of the bridge. Therefore, the bridge expansion device not only needs to have good adaptability and durability, but also needs to be able to effectively alleviate the stress concentration problem of the bridge under various environmental conditions.

[0003] In the expansion joint of a bridge, the rubber sealing strip is a key component. Its main function is to prevent moisture, debris and other external materials from entering the expansion joint, thereby protecting the internal mechanical parts from erosion and wear. In addition, the rubber sealing strip can also act as a buffer, reducing the vibration and noise generated when vehicles pass by, and improving driving comfort. The quality of the rubber sealing strip is directly related to the performance and life of the entire expansion joint. If the rubber sealing strip fails, it may cause the expansion joint to lose its waterproof and dustproof functions, which will lead to greater maintenance problems.

[0004] During long-term use, rubber sealing belts will undergo repeated compression and rebound processes, which will cause them to gradually produce irreversible deformation, the so-called "constant compression permanent deformation". This deformation will weaken the sealing performance of the rubber sealing belt and reduce its ability to block water and foreign matter. Therefore, regular testing of the constant compression permanent deformation of the rubber sealing belt is crucial to assessing its working status and remaining life. Accurately mastering this parameter helps to detect potential faults in a timely manner, take maintenance or replacement measures in advance, and avoid safety hazards and economic losses caused by sealing failure.

[0005] At present, the methods for detecting the constant compression permanent deformation of rubber sealing belts mainly include static compression test method and dynamic compression test method. The static compression test method usually places the sample under a specific pressure for a period of time in a laboratory environment, and measures the height difference after recovery to calculate the deformation; while the dynamic compression test method simulates the actual use conditions, and observes its changes over time by applying periodic pressure to the sample. Although both methods can provide certain reference data, they generally have the problems of complex operation and long time consumption, and the entire process relies on manual completion one by one, lacking the support of automation and intelligent control means.

[0006] The current method of detecting the constant compression permanent deformation of rubber sealing belts has obvious limitations: first, since each step requires manual participation, it takes a lot of time from sample preparation to final result reading, which makes the overall detection efficiency low; second, human errors are easily introduced during manual operation, affecting the accuracy of the test results; finally, the lack of effective information management system support makes it impossible to realize real-time data collection and analysis, and it is difficult to meet the needs of rapid response in modern industrial production. In order to solve the above problems, it is particularly urgent to develop a new detection equipment that integrates automatic loading, intelligent monitoring and data analysis functions. This can not only greatly improve work efficiency and shorten the detection cycle, but also ensure the consistency and reliability of each test, and promote the development of bridge expansion devices in a safer and more reliable direction. Summary of the invention

[0007] The technical problem to be solved by the present application is: to overcome the deficiencies of the prior art and to provide a device for detecting the permanent deformation of the rubber sealing belt of a bridge expansion device. The present application realizes automatic and continuous detection of multiple rubber samples, and can perform detection work uninterruptedly, thereby reducing the labor intensity of detection personnel and improving detection efficiency.

[0008] The technical solution adopted by this application to solve the problems existing in the prior art is: A device for detecting the permanent deformation of a rubber sealing belt of a bridge expansion device, comprising a storage box, a rubber sample transport mechanism, a rubber sample holding assembly, a compression control assembly and a compressed rubber sample transport measurement assembly.

[0009] The storage box with an open top is used to stack and store a plurality of rubber samples. A support plate is slidably arranged inside the storage box, and the support plate drives the rubber samples to move upward.

[0010] The rubber sample transport mechanism is used to transport the rubber sample moved upward to the outside of the storage box to the rubber sample holding assembly. The rubber sample transport mechanism includes a first grating for detecting the thickness of the rubber sample in an initial state.

[0011] The rubber sample holding assembly includes a plurality of rubber sample compression devices distributed in a circular array around the rotating sleeve. The rubber sample compression device includes a fixed plate and an extrusion plate slidably connected to the fixed plate. The fixed plate is fixedly connected to the rotating sleeve through a connecting rod. The self-locking motor drives the rotating sleeve to rotate. Through the rotation of the rotating sleeve, the rubber sample compression device is sequentially connected to the rubber sample transfer mechanism.

[0012] The compression control assembly is used to adjust the distance between the extrusion plate and the fixed plate.

[0013] The compressed rubber sample transport and measurement assembly is arranged below the rubber sample holding assembly. The compressed rubber sample slides into the compressed rubber sample transport and measurement assembly. The thickness of the rubber sample after compression is detected by the second grating in the compressed rubber sample transport and measurement assembly. The thickness of the rubber sample after compression is compared with the thickness of the rubber sample in the initial state to obtain the value of the constant compression permanent deformation of the rubber sample.

[0014] Preferably, the side wall of the storage box is provided with a vertically arranged slide, and the end surface of the support plate is convexly provided with a slider, which is slidably arranged inside the slide, and the slider that passes through the outside of the storage box is threadedly connected with a first screw rod, and the end of the vertically arranged first screw rod is connected to a first motor, and the first motor is fixedly connected to the storage box.

[0015] Preferably, the rubber sample transfer mechanism includes a horizontal platform and a turning platform, the end of the turning platform is rotatably connected to the horizontal platform, a linear module is mounted above the horizontal platform, the sliding portion of the linear module is connected to a first push plate, and the first push plate pushes the rubber sample moved to the top of the outside of the storage box to the turning platform via the horizontal platform.

[0016] Preferably, a threaded plate is provided on the side of the extrusion plate facing away from the fixed plate, the threaded plate is fixedly connected to the fixed plate, a second screw is threadedly connected to the threaded plate, the second screw is rotatably connected to the extrusion plate, and a first polygonal rod is fixed to the end of the second screw.

[0017] Preferably, the compression control assembly is respectively arranged on the upper and lower sides of the rubber sample transfer mechanism, and the compression control assembly includes a second motor and a third telescopic device. The output shaft of the second motor is connected to the second polygonal rod, and a sleeve is slidably provided on the second polygonal rod. The third telescopic device controls the sliding of the sleeve. The sleeves of the two compression control assemblies are arranged opposite to the first polygonal rod of the rubber sample compression device rotated to the upper and lower ends.

[0018] Preferably, the sleeve is arranged horizontally, the first polygonal rod of the rubber sample compression device rotated to the upper and lower ends is arranged horizontally, and the fixing plate and the extrusion plate are arranged vertically.

[0019] Preferably, the compressed rubber sample transport and measurement assembly comprises a feed box with an open upper end, the upper end opening of the feed box is located directly below the rubber sample compression device vertically arranged below, an opening is provided on the bottom side wall of the feed box, the size of the opening is greater than or equal to the size of the compressed rubber sample, a suction cup is provided at the opening, the end of the suction cup facing away from the feed box is connected to a fourth telescopic device through a horizontal rod, and the second grating is horizontally arranged on both sides of the path where the suction cup drives the rubber sample to move backward.

[0020] Preferably, the suction cup is an air suction cup, the suction cup is connected to the fourth telescopic device through an air suction pipe, and the air suction pipe is connected to an air suction pump through an external air pipe.

[0021] Preferably, the storage box, the rubber sample transport mechanism, the rubber sample holding assembly, the compression amount control assembly and the compressed rubber sample transport measurement assembly are arranged inside the housing.

[0022] Preferably, a discharge port is provided below the shell, and the discharge port is arranged directly below the compressed rubber sample transfer and measurement assembly. The discharge port is connected to a drawer below, and the drawer is slidably connected to the shell through a slide rail.

[0023] Compared with the prior art, the present invention has the following beneficial effects: (1) You only need to manually put multiple rubber samples into the storage box, and the subsequent testing work will be carried out automatically without human intervention. Testing can be carried out 24 hours a day, thereby reducing labor intensity and improving testing efficiency.

[0024] (2) The rotating rubber sample compression device can compress and maintain multiple rubber samples at the same time, thereby improving the detection efficiency.

[0025] (3) A rubber sample database is automatically established in the system through laser-printed QR codes. The database contains rich and detailed information, which is convenient for digital office and later query. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 This is the first structural diagram of a device for detecting the permanent deformation of a rubber sealing belt of a bridge expansion device according to the present application. Figure 2 This is the second structural diagram of a device for detecting the permanent deformation of a rubber sealing belt of a bridge expansion device according to the present application. Figure 3 This is a partial cross-sectional view of the housing of a device for detecting the permanent deformation of the rubber sealing belt of a bridge expansion device according to the present application. Figure 4 This is the internal structure diagram of a bridge expansion device rubber sealing belt compression permanent deformation detection device for this application. Figure 5 for Figure 4 Front view of Figure 6 for Figure 4 The rear view of Figure 7 This is the structural diagram of the rubber sample transfer mechanism when the shift plate is parallel. Figure 8 This is the structural diagram of the rubber sample transfer mechanism after the shift plate is rotated. Fig. 9 for Figure 8Bottom view of Fig.10 This is a partial cross-sectional view of the rubber sample storage box. Fig.11 The structure diagram of the rubber sample compression holding assembly is shown below. Fig.12 This is the structure diagram of the rubber sample compression device. Fig.13 This is the structural diagram of the unloading device. Fig.14 This is the structural diagram of the compression control assembly. Fig.15 for Fig.14 A partial cross-sectional view of Fig.16 This is the structural diagram of the transport measurement assembly of the compressed rubber sample. Fig.17 for Fig.16 A partial cross-sectional view of .

[0028] In the figure: 1-storage box, 101-slideway, 2-support plate, 201-slider, 3-first motor, 4-first screw, 5-rubber sample, 6-first push plate, 7-linear module, 8-horizontal platform, 9-first grating, 10-turning table, 1001-rear baffle, 1002-guide plate, 11-first telescopic device, 1101-roller, 12-laser print head, 13-jet tube, 14-fixed plate, 1401-threaded plate, 1402-slot, 15-extrusion plate, 16-second screw, 17-first polygonal rod, 18-sleeve, 1801-connecting rod, 1802-gear ring, 19-fixed shaft, 20-gear, 2001-input shaft, 21-second push plate, 22-second telescopic device, 23-second motor, 24-second polygonal rod, 25-sleeve, 2501-clamping ring, 26-shift lever, 27-third telescopic device, 28-unloading box, 29-QR code reader, 30-suction cup, 3001-exhaust pipe, 31-external air pipe, 32-fourth telescopic device, 33-second grating, 34-control panel, 35-housing, 3501-discharge port, 36-slide rail, 37-drawer, 38-loading port sealing door. DETAILED DESCRIPTION

[0029] In conjunction with the accompanying drawings, a device for detecting the permanent deformation of the rubber sealing belt of a bridge expansion device of the present application is further described in detail, but it does not limit the present application.

[0030] Depend on Figures 1 to 17 As shown, a device for detecting the permanent deformation of the rubber sealing belt of a bridge expansion device includes a storage box 1, a rubber sample transport mechanism, a rubber sample holding assembly, a compression control assembly, and a compressed rubber sample transport measurement assembly.

[0031] The storage box 1 with an open top is used to stack and store a number of rubber samples 5 that need to be monitored for constant compression permanent deformation. A support plate 2 is slidably provided inside the storage box 1, and the support plate 2 drives the rubber samples 5 to move upward.

[0032] The rubber samples 5 to be tested have uniform size specifications and are arranged in a row inside the storage box 1. Fig.10 As shown, the side wall of the storage box 1 is provided with at least two vertically arranged slideways 101, and the end surface of the support plate 2 is convexly provided with a slider 201, and the slider 201 is slidably arranged inside the slideway 101. A first screw rod 4 is threadedly connected to one of the sliders 201 that penetrates the outside of the storage box 1, and a first motor 3 is connected to the end of the vertically arranged first screw rod 4, and the first motor 3 is fixedly connected to the storage box 1. A support plate is respectively provided at the upper and lower ends of the outer wall of the storage box 1, and the upper and lower ends of the first screw rod 4 are rotatably connected to the two support plates respectively. The support plate 2 is driven to move up and down by the cooperation of the first motor 3 and the first screw rod 4. This arrangement can save space and maximize the depth of the storage box 1 for storing more rubber samples 5.

[0033] The rubber sample transport mechanism is used to transport the rubber sample 5 moved upward to the outside of the storage box 1 to the rubber sample holding assembly. The rubber sample transport mechanism includes a first grating 9 for detecting the thickness of the rubber sample 5 in the initial state. Figures 7 to 9 As shown, the rubber sample transport mechanism includes a horizontal platform 8 and a turning platform 10. The end of the turning platform 10 facing the rubber sample holding assembly is rotatably connected to the horizontal platform 8. A linear module 7 is mounted above the horizontal platform 8. The sliding part of the linear module 7 is connected to a U-shaped first push plate 6. The first push plate 6 pushes the rubber sample 5 moved to the upper part of the outside of the storage box 1 onto the turning platform 10 via the horizontal platform 8. When the turning platform 10 is in a horizontal state, its top surface is arranged flush with the top surface of the horizontal platform 8. A crossbeam fixedly connected to the horizontal platform 8 is provided at the bottom of the turning platform 10 to support the horizontally arranged turning platform 10. In order to control the rotation of the turning platform 10, in this embodiment, a rotating roller 1101 is provided at the bottom of the turning platform 10. The bottom of the bracket of the roller 1101 is connected to the telescopic rod of the first telescopic device 11. The first telescopic device 11 controls the roller 1101 to move up and down, thereby driving the turning platform 10 to rotate.

[0034] The transmitting part and the receiving part of the first grating 9 are respectively arranged on both sides of the horizontal platform 8. During the movement, the bottom surface of the rubber sample 5 abuts against the plane of the horizontal platform 8. The first push plate 6 is located at the rear end of the moving direction of the rubber sample 5. In order to avoid affecting the thickness detection result, the height of the first push plate 6 is less than the thickness of the rubber sample 5. The rear end of the rubber sample 5 is stuck in the U-shaped first push plate 6.

[0035] When the turning table 10 is in a horizontal state, the rubber sample 5 is pushed from the horizontal platform 8 to the inside of the turning table 10, and then the first push plate 6 moves backward and moves out of the turning table 10. In order to position the rubber sample 5, a rear baffle 1001 is vertically provided at the end of the turning table 10 away from the horizontal platform 8. After the rubber sample 5 abuts against the rear baffle 1001, it is in place. The first telescopic device 11 controls the turning table 10 to rotate and tilt, and the rubber sample 5 slides from the turning table 10 into the rubber sample holding assembly and enters the downward movement process. In order to guide and avoid the displacement of the rubber sample 5 during the sliding process, an inclined guide plate 1002 is provided on the turning table 10. In order to promote the sliding of the rubber sample 5, a plurality of jet pipes 13 are provided at the end of the turning table 10 away from the rubber sample holding assembly. The jet pipes 13 are parallel and fixedly connected to the turning table 10, and the spray holes of the jet pipes 13 face the rubber sample 5. The jet pipes 13 are connected to the high-pressure gas supply system through the main air intake pipe. The high-pressure gas supply system includes a compressed air pump, a gas storage tank and an electrically controlled exhaust valve.

[0036] Depend on Fig.11 As shown, the rubber sample holding assembly includes a plurality of rubber sample compression devices distributed in a ring array around a rotating sleeve 18, and the rubber sample compression device includes a fixed plate 14 and an extrusion plate 15 slidably connected to the fixed plate 14. The fixed plate 14 is fixedly connected to the rotating sleeve 18 through a connecting rod 1801. The self-locking motor drives the rotating sleeve 18 to rotate. Through the rotation of the rotating sleeve 18, the rubber sample compression device is sequentially connected to the rubber sample transfer mechanism.

[0037] Depend on Fig.12 As shown, a threaded plate 1401 is provided on the side of the extrusion plate 15 facing away from the fixed plate 14, and the threaded plate 1401 is fixedly connected to the fixed plate 14. A second screw 16 is threadedly connected to the threaded plate 1401, and the second screw 16 is rotatably connected to the extrusion plate 15, and a first polygonal rod 17 is fixed to the end of the second screw 16. The rubber sample compression device corresponding to the rotated flip table 10 is arranged tilted, and the tilt angle of the fixed plate 14 included therein is consistent with the tilt angle of the flip table 10, and the two are aligned. The openings of the fixed plate 14 and the extrusion plate 15 face the flip table 10, and the rubber sample 5 that slides down the flip table 10 slides to the top of the fixed plate 14. The fixed plate 14 is an L-shaped plate, which can block the rubber sample 5 to prevent it from sliding. The rubber sample compression device loaded with the rubber sample 5 continues to rotate. During the rotation, the openings of the fixed plate 14 and the extrusion plate 15 are gradually arranged upward. When the openings of the fixed plate 14 and the extrusion plate 15 are arranged vertically upward, the compression control assembly is used to adjust the distance between the extrusion plate 15 and the fixed plate 14. The two squeeze the rubber sample 5 according to the set compression ratio and maintain it for 24 hours.

[0038] Depend on Fig.14 as well as Fig.15As shown, the compression control assembly is respectively arranged on the upper and lower sides of the rubber sample transport mechanism, and the compression control assembly includes a second motor 23 and a third telescopic device 27. The output shaft of the second motor 23 is connected to the second polygonal rod 24, and a sleeve 25 is slidably provided on the second polygonal rod 24. The sleeve 25 is provided with a clamping ring 2501, and a lever 26 is clamped on the clamping ring 2501. The telescopic rod of the third telescopic device 27 is connected to the lever 26, and the sliding of the sleeve 25 is controlled by the lever 26. The sleeves 25 of the two compression control assemblies are arranged opposite to the first polygonal rod 17 of the rubber sample compression device rotated to the upper and lower ends. The shape and size of the inner cavity of the sleeve 25 match the first polygonal rod 17. When the sleeve 25 is sleeved on the first polygonal rod 17, it can drive the first polygonal rod 17 to rotate.

[0039] For easy installation, the sleeve 25 is arranged horizontally, the first polygonal rod 17 of the rubber sample compression device rotated to the upper and lower ends is arranged horizontally, and the fixing plate 14 and the pressing plate 15 are arranged vertically.

[0040] The compressed rubber sample transport and measurement assembly is arranged below the rubber sample holding assembly. The compressed rubber sample 5 slides into the compressed rubber sample transport and measurement assembly. The thickness of the compressed rubber sample 5 is detected by the second grating 33 in the compressed rubber sample transport and measurement assembly. The thickness of the compressed rubber sample 5 is compared with the thickness of the rubber sample 5 in the initial state to obtain the value of the constant compression permanent deformation of the rubber sample 5.

[0041] Depend on Fig.16 as well as Fig.17 As shown, the compressed rubber sample transport and measurement assembly includes a feed box 28 with an open upper end, the upper open end of the feed box 28 is located directly below the rubber sample compression device vertically arranged below, an opening is provided on the bottom side wall of the feed box 28, the size of the opening is greater than or equal to the size of the compressed rubber sample 5, a suction cup 30 is provided at the opening, and the end of the suction cup 30 away from the feed box 28 is connected to a fourth telescopic device 32 through a horizontal rod, and a second grating 33 is horizontally arranged on both sides of the path where the suction cup 30 drives the rubber sample 5 to move backward.

[0042] The suction cup 30 is an air suction cup, and the suction cup 30 is connected to the fourth telescopic device 32 via an air suction pipe 3001 , and the air suction pipe 3001 is connected to an air suction pump via an external air pipe 31 .

[0043] When the extrusion time of the rubber sample 5 in the rubber sample compression device reaches the threshold, the rubber sample compression device rotates to the top of the material box 28, the third telescopic device 27 controls the sleeve 25 to slide onto the first polygonal rod 17, and the second motor 23 drives the second screw 16 to rotate through the second polygon 24, the sleeve 25 and the first polygonal rod 17, thereby expanding the distance between the extrusion plate 15 and the fixed plate 14, releasing the extrusion of the rubber sample 5, and making the rubber sample 5 free and falling into the material box 28. After the rubber sample 5 falls to the bottom of the material box 28, it contacts the suction cup 30, and is supported and adsorbed by the suction cup 30. After standing for 30 minutes to 1 hour, when the rubber sample 5 is fully recovered, the fourth telescopic device 32 drives the rubber sample 5 to move outward through the suction cup 30, and moves to between the emitting part and the receiving part of the second grating 33, and the thickness of the compressed rubber sample 5 is measured by the second grating 33.

[0044] The upper opening of the material box 28 is V-shaped, which is convenient for the rubber sample 5 to fall. After a long period of extrusion, the rubber sample 5 is easily attached to the fixing plate 14 or the extrusion plate 15 and will not fall naturally. For this reason, a material discharge device is provided above the rubber sample compression device. Fig.13 As shown, the unloading device includes a second push plate 21 and a second telescopic device 22 connected above the second push plate 21. A through slot 1402 is provided on the vertical surface of the L-shaped fixing plate 14, and the slot 1402 is arranged corresponding to the second push plate 21. When the extrusion plate 15 opens a certain gap, the second push plate 21 passes through the slot 1402 into the rubber sample compression device to push the rubber sample 5 to fall.

[0045] Since the unloading device is arranged inside the rubber sample holding assembly, in order to fix it, the rotating sleeve 18 is sleeved on the fixed shaft 19, and the second telescopic device 22 is fixedly connected to the fixed shaft 19 through a bracket, and the fixed shaft 19 always remains fixed.

[0046] A gear ring 1802 is fixed on the circular shaft surface of the rotating sleeve 18 , and the gear ring 1802 is meshedly connected with a gear 20 , and the gear 20 is connected to the output shaft of the self-locking motor through an input shaft 2001 .

[0047] Depend on Figures 1 to 3 As shown, the storage box 1, the rubber sample transport mechanism, the rubber sample holding assembly, the compression control assembly, and the compressed rubber sample transport measurement assembly are arranged inside the housing 35. Both ends of the fixed shaft 19 are fixedly connected to the inside of the housing 35, and the storage box 1, the rubber sample transport mechanism, the shrinkage control assembly, and the compressed rubber sample transport measurement assembly are fixedly connected to the inner wall of the housing 35 through a bracket.

[0048] The input shaft 2001 is passed through the outside of the housing 35 and connected to the self-locking motor. The end of the air extraction pipe 3001 is passed through the outside of the housing 35 and connected to the air extraction pump.

[0049] A discharge port 3501 is provided below the housing 35, and the discharge port 3501 is arranged directly below the compressed rubber sample transfer measurement assembly, and the discharge port 3501 is connected to a drawer 37 below, and the drawer 37 is slidably connected to the housing 35 via a slide rail 36. The rubber sample 5 after the thickness measurement by the second grating 33 falls into the drawer 37 through the discharge port 3501.

[0050] A control panel 34 is provided on the shell 35. The control panel 34 adopts the existing technology and is electrically connected to the first electrically controlled motor 3, the linear module 7, the first grating 9, the first telescopic device 11, the second telescopic device 22, the second motor 23, the third telescopic device 27, the fourth telescopic device 32 and the second grating 33. The connection relationship between them also adopts the existing technology.

[0051] A loading port is provided at a position of the housing 35 corresponding to the storage box 1 for replenishing the rubber sample 5 into the storage box 1 , and a loading port sealing door 38 is detachably connected to the loading port.

[0052] In order to mark each rubber sample 5, a laser printing head 12 is provided above the turning table 10, and a two-dimensional code generator connected to the laser printing head 12 is provided outside the housing 35. After the rubber sample 5 is moved to the turning table 10, the two-dimensional code generator generates a two-dimensional code, and prints the two-dimensional code on the rubber sample 5 through the laser printing head 12. Since the area occupied by the two-dimensional code is small, the influence of the thermal effect of laser printing on the performance of the rubber sample 5 can be ignored.

[0053] The material box 28 is made of a transparent material, and a two-dimensional code reader 29 is provided on the outside of the material box 28. The two-dimensional code on the rubber sample 5 dropped to the bottom of the material box 28 is arranged opposite to the two-dimensional code reader 29. The two-dimensional code reader 29 can read the information of the two-dimensional code above and associate the relevant data to ensure the accuracy and traceability of the constant compression permanent deformation test data.

[0054] The fault tolerance mechanism of the two-dimensional code can ensure to a certain extent that even if the two-dimensional code is damaged, contaminated or deformed to a certain extent, it can still be correctly read, so the two-dimensional code on the compressed rubber sample 5 can be read.

[0055] Based on the above embodiment, the method for detecting the constant compression permanent deformation of the rubber sealing belt of the bridge expansion device is: The first push plate 6 moves to the rear end of the storage box 1, and the support plate 2 lifts the rubber sample 5 inside the storage box 1, so that one of the rubber samples 5 moves to the outside of the storage box 1. The linear module 7 drives the first push plate 6 to move forward, and the rubber sample 5 moves to the flip table 10 through the horizontal platform 8. When passing through the first grating 9, the first grating 9 detects the thickness of the rubber sample 5 and records the data in the system. The laser print head 12 prints a two-dimensional code on the rubber sample 5 on the flip table 10. The two-dimensional code is the number of the rubber sample 5 in the system, and the thickness data detected by the first grating 9 is associated with the two-dimensional code.

[0056] After the rubber sample compression device that needs to be loaded with the rubber sample 5 moves to the designated position, the flip table 10 rotates, the rubber sample 5 slides onto the fixed plate 14, and the rubber sample compression device continues to rotate. When arranged relative to the compression control assembly at the upper end, the sleeve 25 and the second motor 23 are activated, the second screw 16 is rotated, and the extrusion plate 15 squeezes the rubber sample 5 to compress it to the set compression amount, which is 15%-25% of the original thickness. And upload this time data to the database corresponding to the relevant QR code in the system, and automatically generate the time value of unlocking the compression in the database according to the compression setting duration.

[0057] When the time reaches the unlocking time, the rubber sample compression device rotates to the top of the compressed rubber sample transfer measurement assembly, and the compression control assembly below controls the extrusion plate 15 to move, expanding the gap between it and the fixed plate 14, and the rubber sample 5 falls into the unloading box 28. The QR code reader 29 reads the QR code on the rubber sample 5, uploads it to the system, and compares it with the QR code in the database.

[0058] After the rubber sample 5 is left to stand for a period of time, it is transferred to the second grating 33, and the second grating 33 measures its thickness, and uploads the thickness data and the measurement time to the system.

[0059] Through recording and calculation, the data content contained in the database of the same QR code in the system includes the initial thickness of the rubber sample 5, the time when the rubber sample 5 starts to be compressed, the compression amount, the compression release time, the total compression time, the thickness measured after compression and standing, the measurement time, the standing time after compression, and the constant compression permanent deformation of the rubber sample 5.

[0060] Depend on Figures 1 to 17 As shown, a device for detecting the permanent deformation of the rubber sealing belt of a bridge expansion device includes a storage box 1, a rubber sample transport mechanism, a rubber sample holding assembly, a compression control assembly, and a compressed rubber sample transport measurement assembly.

[0061] The implementation methods of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present application.

Claims

1. A device for detecting the permanent deformation of the rubber sealing belt of a bridge expansion device, characterized in that: It comprises a storage box (1), a rubber sample transport mechanism, a rubber sample holding assembly, a compression amount control assembly, and a compressed rubber sample transport measurement assembly; The storage box (1) is open at the top and is used to stack and store a plurality of rubber samples (5). A support plate (2) is slidably provided inside the storage box (1), and the support plate (2) drives the rubber samples (5) to move upwards. The rubber sample transport mechanism is used to transport the rubber sample (5) moved upward to the outside of the storage box (1) to the rubber sample holding assembly, and the rubber sample transport mechanism includes a first grating (9) for detecting the thickness of the rubber sample (5) in an initial state; The rubber sample holding assembly comprises a plurality of rubber sample compression devices distributed in a ring array around a rotating sleeve (18), the rubber sample compression devices comprising a fixed plate (14) and a pressing plate (15) slidably connected to the fixed plate (14), the fixed plate (14) being fixedly connected to the rotating sleeve (18) via a connecting rod (1801), the self-locking motor drives the rotating sleeve (18) to rotate, and the rubber sample compression devices are sequentially connected to the rubber sample transport mechanism in a corresponding manner through the rotation of the rotating sleeve (18); The compression control assembly is used to adjust the distance between the extrusion plate (15) and the fixed plate (14); The compressed rubber sample transport and measurement assembly is arranged below the rubber sample holding assembly. The compressed rubber sample (5) slides into the compressed rubber sample transport and measurement assembly. The thickness of the compressed rubber sample (5) is detected by a second grating (33) in the compressed rubber sample transport and measurement assembly. The thickness of the compressed rubber sample (5) is compared with the thickness of the rubber sample (5) in its initial state to obtain a value of the constant compression permanent deformation of the rubber sample (5).

2. A device for detecting the permanent deformation of a rubber sealing belt of a bridge expansion device according to claim 1, characterized in that: The side wall of the storage box (1) is provided with a vertically arranged slideway (101), the end surface of the support plate (2) is convexly provided with a slider (201), the slider (201) is slidably arranged inside the slideway (101), a first screw rod (4) is threadedly connected to the slider (201) that is inserted to the outside of the storage box (1), and a first motor (3) is connected to the end of the vertically arranged first screw rod (4), and the first motor (3) is fixedly connected to the storage box (1).

3. The device for detecting the permanent deformation of the rubber sealing belt of a bridge expansion device according to claim 1 is characterized in that: The rubber sample transfer mechanism comprises a horizontal platform (8) and a turning platform (10), wherein the end of the turning platform (10) is rotatably connected to the horizontal platform (8), a linear module (7) is mounted above the horizontal platform (8), and a sliding portion of the linear module (7) is connected to a first push plate (6), and the first push plate (6) pushes the rubber sample (5) moved to the upper part of the outside of the storage box (1) onto the turning platform (10) via the horizontal platform (8).

4. A device for detecting the permanent deformation of the rubber sealing belt of a bridge expansion device according to claim 3, characterized in that: A threaded plate (1401) is provided on one side of the extrusion plate (15) facing away from the fixed plate (14); the threaded plate (1401) is fixedly connected to the fixed plate (14); a second screw rod (16) is threadedly connected to the threaded plate (1401); the second screw rod (16) is rotatably connected to the extrusion plate (15); and a first polygonal rod (17) is fixed to the end of the second screw rod (16).

5. A device for detecting the permanent deformation of the rubber sealing belt of a bridge expansion device according to claim 4, characterized in that: The compression control assembly is respectively arranged on the upper and lower sides of the rubber sample transport mechanism, and comprises a second motor (23) and a third telescopic device (27). The output shaft of the second motor (23) is connected to a second polygonal rod (24), a sleeve (25) is slidably provided on the second polygonal rod (24), and the third telescopic device (27) controls the sliding of the sleeve (25). The sleeves (25) of the two compression control assemblies are arranged opposite to the first polygonal rod (17) of the rubber sample compression device which rotates to the upper and lower ends.

6. A device for detecting the permanent deformation of the rubber sealing belt of a bridge expansion device according to claim 5, characterized in that: The sleeve (25) is arranged horizontally, the first polygonal rod (17) of the rubber sample compression device rotated to the upper and lower ends is arranged horizontally, and the fixing plate (14) and the pressing plate (15) are arranged vertically.

7. A device for detecting the permanent deformation of a rubber sealing belt of a bridge expansion device according to claim 6, characterized in that: The compressed rubber sample transport and measurement assembly comprises a material box (28) with an open top, the open top of the material box (28) being located directly below a rubber sample compression device vertically arranged below, an opening being provided on a bottom side wall of the material box (28), the size of the opening being greater than or equal to the size of the compressed rubber sample (5), a suction cup (30) being provided at the opening, one end of the suction cup (30) facing away from the material box (28) being connected to a fourth telescopic device (32) via a horizontal rod, and a second grating (33) being horizontally arranged on both sides of a path along which the suction cup (30) drives the rubber sample (5) to move backward.

8. The device for detecting the permanent deformation of the rubber sealing belt of a bridge expansion device according to claim 7 is characterized in that: The suction cup (30) is an air suction cup, and the suction cup (30) is connected to the fourth telescopic device (32) via an air suction pipe (3001), and the air suction pipe (3001) is connected to an air suction pump via an external air pipe (31).

9. A device for detecting the permanent deformation of a rubber sealing belt of a bridge expansion device according to any one of claims 1 to 8, characterized in that: The storage box (1), the rubber sample transport mechanism, the rubber sample holding assembly, the compression amount control assembly, and the compressed rubber sample transport measurement assembly are arranged inside the housing (35).

10. A device for detecting the permanent deformation of the rubber sealing belt of a bridge expansion device according to claim 9, characterized in that: A discharge port (3501) is provided below the housing (35). The discharge port (3501) is arranged directly below the compressed rubber sample transfer and measurement assembly. The discharge port (3501) is connected to a drawer (37) below. The drawer (37) is slidably connected to the housing (35) via a slide rail (36).

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