A device for processing road bridge expansion joint

Abstract

The application discloses a kind of for road bridge expansion joint processing device, including: bridge body, the top of bridge body is provided with base.The application uses, flashing light is provided with two lamps, respectively flashing green light and red light, initial distance is calculated by infrared range finder, controller is according to initial data control green light in flashing light and turn on, start first motor, drive first turntable and transmission belt rotation, simultaneously drive second turntable and fixed rod rotation, and drive cutting knife fast rotation, appropriate height is adjusted by adjusting structure, in the process of moving cutting, infrared range finder and positioning plate cooperate, and the distance between cutting knife and positioning plate is detected ceaselessly, when the data of detection changes, red light in flashing light is turned on by controller, prompting staff, cutting knife deviates, adjust in time in combination with indication mark, staff does not need to bend down and measure, reduce lumbar strain.

Description

Technical Field

[0001] This invention relates to the field of road and bridge treatment technology, specifically to a device for treating road and bridge expansion joints. Background Technology

[0002] Roads and bridges generally consist of several major parts, including roadbed, pavement, bridges, tunnels, and traffic engineering facilities. Bridge expansion joints are joints installed between the ends of two beams, between a beam end and an abutment, or at hinged joints of the bridge to accommodate bridge deck deformation. These joints are required to allow free expansion and contraction in two directions, parallel and perpendicular to the bridge axis. Cutting devices are typically used when creating expansion joints on bridges and roads. The cutting process usually involves using a trolley carrying a cutting machine to cut the expansion joint.

[0003] In the prior art, such as Chinese Patent No. CN216809639U, a maintenance and cleaning device for road and bridge expansion joints is disclosed, including a support frame with an internal slot. A movable frame is placed on the left side of the slot. This device is moved to the expansion joint location by a hand-operated push rod. The extension of the telescopic end of an electric push rod pushes the movable frame downwards. A lever outside the turntable moves downwards and extends into the expansion joint. A servo motor rotates clockwise at low speed, driving a transmission wheel to rotate. This transmission wheel, via a transmission belt, drives a second transmission wheel and the turntable to rotate, thus moving the device. The lever interferes with any stuck stones and rotates them upwards to remove them, thus avoiding the problem of ineffective stone removal during expansion joint maintenance. A vacuum cleaner, through a conduit and vacuum hood, vacuums the expansion joint below.

[0004] However, in the existing technology, when cutting the expansion joints of roads and bridges with a cutting machine, it is generally done manually. Multiple workers work together to push the cutting machine and cut along the marked straight line. When cutting the expansion joints of bridges, workers need to bend over and visually observe whether the cutting machine deviates from the straight line. Bending over for a long time can easily cause physical discomfort and lumbar strain to the workers, which is not good for their health. Moreover, visual inspection may be prone to errors.

[0005] Therefore, we propose a device for treating expansion joints in roads and bridges to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a device for treating road and bridge expansion joints, in order to solve the problem mentioned in the background art where multiple workers cooperate to push the cutting machine along a marked straight line when cutting at road and bridge expansion joints. During this process, workers need to bend over and visually observe whether the cutting machine deviates from the straight line. Bending over for a long time can easily cause physical discomfort and lumbar strain to the workers, which is not good for their health. In addition, the visual method may have errors.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a device for treating expansion joints of roads and bridges, comprising: a bridge body, a base provided on the top of the bridge body, an adjustment structure fixedly installed on the top of the base near one side, and a cutting processing component fixedly installed on the top of the adjustment structure; A ranging component is fixedly installed on the top of a base. The ranging component includes a mounting base, a controller is provided on the outer surface of the mounting base, a mounting frame is connected to the center of the top of the mounting base by multiple screws, an infrared rangefinder is provided inside the mounting frame, a flashing light is provided on the top of the mounting base near the front surface, multiple reinforcing rods are provided on the rear surface of the mounting base, a connecting block is fixedly installed on the top of each of the multiple reinforcing rods, and a positioning plate is provided between the front surfaces of two adjacent connecting blocks. The cutting processing assembly includes a first motor, a first turntable fixedly mounted on the output end of the first motor, a transmission belt movably sleeved on the outer surface of the first turntable, a second turntable movably connected to the inner wall of the transmission belt near one side, a fixing rod fixedly mounted on the rear surface of the second turntable, and a cutting blade fixedly mounted at the center of the outer surface of the fixing rod.

[0008] Preferably, the adjustment structure includes a fixed plate, a plurality of support rods are fixedly installed on the bottom of the fixed plate, a sliding sleeve is movably fitted on the outer surface of the plurality of support rods, a fixed seat is fixedly installed on the outer surface of the plurality of sliding sleeves, a second motor is fixedly installed on the top of the fixed plate near the rear surface by an auxiliary rod, and threaded holes are opened on the top of the fixed plate near both the front and rear surfaces, and lead screws are threaded into the interior of both threaded holes.

[0009] Preferably, the bottom of the mounting base is fixedly connected to the top of the base near the other side, and a push rod is fixedly installed on the front and rear surfaces of the mounting base near the top. An indicator is fixedly installed on the outer surface of the center of the push rod, and two anti-slip pads are fixedly sleeved on the outer surface of the push rod.

[0010] Preferably, a fixing block is fixedly installed on the bottom of the base near the other side, a connecting rod is movably embedded inside the fixing block, and first pulleys are movably sleeved on the outer surfaces of the connecting rod near both ends.

[0011] Preferably, two T-shaped rods are fixedly installed near one side of the bottom of the base, and second pulleys are movably fitted on the outer surfaces of the two T-shaped rods near both ends. The outer surfaces of the plurality of first pulleys and the plurality of second pulleys are in contact with the top of the bridge body.

[0012] Preferably, each of the multiple connecting blocks has a locking hole on its top near both sides, and each of the two positioning plates has a locking block fixedly installed on its rear surface near both sides. The outer surfaces of the multiple locking blocks are respectively movably embedded in the multiple locking holes, and the bottoms of the multiple reinforcing rods are in contact with the top of the bridge body near its rear surface.

[0013] Preferably, gears are fixedly mounted on the top of both lead screws, and toothed belts are meshed on the outer surfaces of the two gears. The output end of the second motor is fixedly connected to the top of one of the gears.

[0014] Preferably, one end of each of the two lead screws extends movably through to the bottom of the fixed base, and one end of each of the two lead screws is movably embedded in the bottom of the base. The bottoms of the plurality of support rods are fixedly installed inside the base near one side of the bottom.

[0015] Preferably, two multi-section telescopic rods are fixedly installed inside the base near the bottom of the other side, and the tops of the two multi-section telescopic rods are fixedly installed on the bottom of the fixed seat near one side.

[0016] Preferably, the outer surfaces of the fixing rod near both ends are movably fitted with support blocks, the bottoms of the two support blocks are fixedly installed on the top of the fixing seat near one side, and the bottom of the first motor is fixedly installed on the top of the fixing seat.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. In use, the indicator and the cutting blade are aligned on the same horizontal plane. The base is pushed by a push rod, moving the entire device to the top of the bridge body where the expansion joint is to be opened, aligning the cutting blade with the pre-marked straight line. At this point, the indicator, the cutting blade, and the marked straight line on the ground are on the same horizontal plane. The two positioning plates are parallel to the marked straight line and the cutting blade. The infrared rangefinder is electrically connected to the controller, and the flashing light is also electrically connected to the controller. The flashing light has two lights, one flashing green and one flashing red. The distance is calculated by the infrared rangefinder, which transmits the measured distance (i.e., the distance when the positioning plates and the cutting blade are parallel) to the controller. The controller controls the green light in the flashing light to illuminate based on the transmitted data, initiating the first electrical... The machine, driven by the output of the first motor, rotates the first turntable, which in turn rotates the transmission belt, simultaneously rotating the second turntable and the fixed rod, and causing the cutting blade to rotate rapidly. The height is adjusted by the adjustable structure, and the machine cuts the bridge structure. A push rod slowly moves the entire device to cut the expansion joint. During the cutting process, an infrared rangefinder and a positioning plate work together to continuously detect the distance between the cutting blade and the positioning plate (i.e., the distance between the straight line marked on the ground and the positioning plate). When the detected data changes, the controller activates a red light to alert the operator that the cutting blade has deviated. Combined with the indicator, timely adjustments are made, thus facilitating distance measurement, improving accuracy, and eliminating the need for operators to bend over for visual estimation, which is beneficial for protecting their health and reducing lower back strain.

[0018] 2. The height of the cutting assembly is easily adjusted by setting an adjustment structure. The second motor is started, and its output drives one of the gears to rotate, which in turn drives the toothed belt and the other gear to rotate. At the same time, the two lead screws rotate simultaneously, causing the fixed seat to move downward and the cutting assembly to move downward. When the cutting assembly moves to the appropriate position, the second motor is stopped, so that the cutting assembly remains in the adjusted state. The height of the fixed seat can be easily adjusted by the second motor driving the two gears and the two lead screws, and the height of the cutting assembly can be further adjusted, thus facilitating the cutting blade to cut at different depths.

[0019] 3. When in use, the positioning plate is inserted into the corresponding hole through the locking block, and then installed on the outer surface of the connecting block. It is easy to install and remove. The staff can increase the number of positioning plates and splice them together according to actual needs. The anti-slip pad can increase friction and prevent slipping, which helps the staff to better grip the push rod and push the entire device. Attached Figure Description

[0020] Figure 1 This is a front perspective view of a road and bridge expansion joint treatment device according to the present invention; Figure 2This is a rear perspective view of a road and bridge expansion joint treatment device according to the present invention; Figure 3 This is a top perspective view of a road and bridge expansion joint treatment device according to the present invention; Figure 4 This is a side perspective view of a road and bridge expansion joint treatment device according to the present invention; Figure 5 This is a three-dimensional view of the structure of the base in a road and bridge expansion joint treatment device according to the present invention; Figure 6 This is a three-dimensional view of the structure of a distance measuring component in a road and bridge expansion joint treatment device according to the present invention. Figure 7 This is a three-dimensional view of the structure of a cutting component in a road and bridge expansion joint treatment device according to the present invention. Figure 8 This is a three-dimensional view of the structure of an adjustment structure used in a road and bridge expansion joint treatment device according to the present invention.

[0021] In the diagram: 1. Bridge body; 2. Base; 3. Cutting assembly; 301. First motor; 302. First turntable; 303. Transmission belt; 304. Second turntable; 305. Fixing rod; 306. Support block; 307. Cutting blade; 4. Adjustment structure; 401. Fixing plate; 402. Second motor; 403. Threaded hole; 404. Lead screw; 405. Gear; 406. Toothed belt; 407. Sliding sleeve; 408. Support rod; 409. Multi-section telescopic pole; 410. Fixed base; 5. Distance measuring component; 501. Mounting base; 502. Controller; 503. Flashing light; 504. Mounting frame; 505. Infrared rangefinder; 506. Positioning plate; 507. Locking block; 508. Connecting block; 509. Locking hole; 510. Reinforcing rod; 6. Push rod; 7. Anti-slip pad; 8. Indicator; 9. Fixed block; 10. First pulley; 11. T-shaped rod; 12. Second pulley; 13. Connecting rod. Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-8As shown, the present invention provides a technical solution: a device for treating expansion joints of roads and bridges, comprising: a bridge body 1, a base 2 disposed on the top of the bridge body 1, an adjustment structure 4 fixedly installed on the top of the base 2 near one side, and a cutting processing component 3 fixedly installed on the top of the adjustment structure 4; a distance measuring component 5, fixedly installed on the top of the base 2, the distance measuring component 5 including a mounting base 501, a controller 502 disposed on the outer surface of the mounting base 501, a mounting frame 504 connected to the center of the top of the mounting base 501 by multiple screws, an infrared rangefinder 505 disposed inside the mounting frame 504, and a cutting processing component 3 disposed on the top of the mounting base 501 near the front surface. The mounting base 501 is equipped with a flashing light 503 and multiple reinforcing rods 510 on its rear surface. Each reinforcing rod 510 has a connecting block 508 fixedly mounted on its top. A positioning plate 506 is provided between the front surfaces of two adjacent connecting blocks 508. The cutting processing component 3 includes a first motor 301. A first turntable 302 is fixedly mounted on the output end of the first motor 301. A transmission belt 303 is movably sleeved on the outer surface of the first turntable 302. A second turntable 304 is movably connected to the inner wall of the transmission belt 303 near one side. A fixing rod 305 is fixedly mounted on the rear surface of the second turntable 304. A cutting blade 307 is fixedly mounted at the center of the outer surface of the fixing rod 305.

[0024] At the same time, according to Figure 1 - Figure 2 and Figure 8 As shown, the adjustment structure 4 includes a fixed plate 401. Multiple support rods 408 are fixedly installed on the bottom of the fixed plate 401. Sliding sleeves 407 are movably fitted on the outer surfaces of the multiple support rods 408. Fixed seats 410 are fixedly installed on the outer surfaces of the multiple sliding sleeves 407. A second motor 402 is fixedly installed on the top of the fixed plate 401 near the rear surface via an auxiliary rod. Threaded holes 403 are opened on the top of the fixed plate 401 near both the front and rear surfaces. Lead screws 404 are threadedly connected inside the two threaded holes 403, which facilitates driving one gear 405 to rotate by driving the second motor 402, which then drives the toothed belt 406 and the other gear 405 to rotate, and finally drives both lead screws 404 to rotate simultaneously. This causes the fixed seat 410 to move downward, and at the same time, it causes the cutting processing assembly 3 to move downward, which facilitates adjusting the height of the cutting processing assembly 3 to cut the bridge body 1.

[0025] according to Figure 1 - Figure 6 As shown, the bottom of the mounting base 501 is fixedly connected to the top of the base 2 near the other side. A push rod 6 is fixedly installed on the front and rear surfaces of the mounting base 501 near the top. An indicator 8 is fixedly installed on the outer surface of the center of the push rod 6. Two anti-slip pads 7 are fixedly sleeved on the outer surface of the push rod 6. The anti-slip pads 7 increase friction and prevent slipping, which helps the operator to better grip the push rod 6 and push the entire device.

[0026] according to Figure 1 - Figure 5 As shown, a fixing block 9 is fixedly installed on the bottom of the base 2 near the other side. A connecting rod 13 is movably embedded inside the fixing block 9. First pulleys 10 are movably sleeved on the outer surfaces of the connecting rod 13 near both ends, so that the first pulleys 10 can be installed on the bottom of the base 2. The rotation of the first pulleys 10 reduces the friction and makes it easier to push the base 2 to move.

[0027] according to Figure 1 - Figure 5 As shown, two T-shaped rods 11 are fixedly installed near one side of the bottom of the base 2. The outer surfaces of the two T-shaped rods 11 near both ends are movably fitted with second pulleys 12. The outer surfaces of the multiple first pulleys 10 and the multiple second pulleys 12 are in contact with the top of the bridge body 1, so that the base 2 can be supported by the action of the second pulleys 12, increasing the stability of the base 2, preventing tilting and affecting the cutting of the expansion joint, and cooperating with the first pulleys 10 to facilitate the stable movement of the entire device.

[0028] according to Figure 1 - Figure 4 and Figure 6 As shown, multiple connecting blocks 508 have locking holes 509 on their tops near both sides, and two positioning plates 506 have locking blocks 507 fixedly installed on their rear surfaces near both sides. The outer surfaces of multiple locking blocks 507 are movably embedded in the interiors of multiple locking holes 509. The bottoms of multiple reinforcing rods 510 are in contact with the tops of the rear surfaces of the bridge body 1. By inserting the locking blocks 507 into the locking holes 509, it is easy to install the positioning plates 506. Other positioning plates 506 can be added later for splicing and installation. The assembly and disassembly are convenient and the operation is simple.

[0029] according to Figure 8 As shown, gears 405 are fixedly installed on the top of both lead screws 404. The outer surfaces of the two gears 405 are meshed with toothed belts 406. The output end of the second motor 402 is fixedly connected to the top of one of the gears 405, so that the second motor 402 can drive one of the gears 405 to rotate, which in turn drives the toothed belts 406 to rotate, thereby driving the other gear 405 to rotate.

[0030] according to Figure 1 - Figure 5 and Figure 8As shown, one end of each of the two lead screws 404 is movably inserted through to the bottom of the fixed base 410, and one end of each of the two lead screws 404 is movably embedded in the bottom of the base 2. The bottoms of the multiple support rods 408 are fixedly installed inside the base 2 near one side of the bottom, so as to facilitate the fixed installation of the fixed plate 401 by means of the support rods 408, and further assist the two lead screws 404 to increase stability.

[0031] according to Figure 1 - Figure 5 and Figure 8 As shown, two multi-section movable telescopic rods 409 are fixedly installed inside the base 2 near the bottom of the other side. The tops of the two multi-section movable telescopic rods 409 are fixedly installed on the bottom of the fixed seat 410 near one side. Under the action of the two multi-section movable telescopic rods 409, the fixed seat 410 is provided with auxiliary support and also plays a limiting role, so as to facilitate the up and down movement of the fixed seat 410.

[0032] according to Figure 7 - Figure 8 As shown, support blocks 306 are movably fitted on the outer surfaces of the fixed rod 305 near both ends. The bottoms of the two support blocks 306 are fixedly installed on the top of the fixed base 410 near one side. The bottom of the first motor 301 is fixedly installed on the top of the fixed base 410. The two support blocks 306 facilitate the support and installation of the fixed rod 305 and the cutting blade 307.

[0033] The overall effect of the mechanism is as follows: When in use, the indicator 8 and the cutting blade 307 are aligned and on the same horizontal plane. The base 2 is pushed by the push rod 6, causing the entire device to move to the top of the bridge body 1 where the expansion joint is to be opened, aligning the cutting blade 307 with the pre-marked straight line. At this time, the indicator 8, the cutting blade 307, and the marked straight line on the ground are on the same horizontal plane. Multiple reinforcing rods 510 are placed on top of the bridge body 1, parallel to the marked straight line on the ground. At this time, the two positioning plates 506 are on the same horizontal plane, parallel to the marked straight line and the cutting blade 307. The infrared rangefinder 505 is electrically connected to the controller 502, and the flashing light 503 is electrically connected to the controller 502. The connection is made by a flashing light 503 with two lights, one flashing green and one flashing red. Infrared rays are emitted by an infrared rangefinder 505, illuminating the positioning plate 506 and reflecting back. The infrared rangefinder 505 receives the reflected rays and calculates the distance based on the time it takes for the infrared rays to travel and their propagation speed. The infrared rangefinder 505 transmits the measured distance (the distance between the positioning plate 506 and the cutting blade 307 when they are parallel) to the controller 502. The controller 502 then activates the green light in the flashing light 503, starting the first motor 301. The output of the first motor 301 drives the first turntable 302 to rotate, which in turn drives the transmission belt 303, simultaneously rotating the second turntable 304 and the fixing rod. 305 rotates, causing the cutting blade 307 to rotate rapidly. Then, the second motor 402 is started, driving one gear 405 to rotate via its output, which in turn drives the toothed belt 406 and the other gear 405. Simultaneously, both lead screws 404 rotate, causing the fixed base 410 to move downwards, and simultaneously moving the cutting assembly 3 downwards to cut the bridge body 1. Once the cutting assembly 3 has reached the appropriate position, the second motor 402 is paused, allowing the cutting assembly 3 to maintain its adjusted state. Then, the push rod 6 slowly pushes the entire device to move, performing expansion joint cutting. During the cutting process, the infrared rangefinder 505 and the positioning plate 506 work together to continuously monitor the relationship between the cutting blade 307 and the positioning plate 506. The distance between the marked straight line on the ground and the positioning plate 506 is measured, and then the data is transmitted to the controller 502. When the detected data changes, the controller 502 controls the red light in the flashing light 503 to illuminate, reminding the staff that the cutting blade 307 has deviated. Combined with the indicator 8, timely adjustments are made, thus facilitating distance measurement, improving accuracy, and eliminating the need for staff to bend over and visually inspect. This is beneficial for protecting the staff's health and reducing lower back strain. It also solves the problem of multiple staff members working together to push the cutting machine along the marked straight line when cutting at road and bridge expansion joints. This process requires staff to bend over and visually inspect whether the cutting machine has deviated from the line, which can easily cause discomfort due to prolonged bending.Lower back strain is detrimental to health, and visual inspection may be prone to errors. When the second motor 402 drives the two gears 405 and two lead screws 404 to rotate, it facilitates the adjustment of the height of the fixed base 410, further adjusting the height of the cutting assembly 3. This allows the cutting blade 307 to perform cuts at different depths. The positioning plate 506 has a serrated structure on both sides, as shown in the diagram. Figure 6 As shown, to facilitate better fitting of the two positioning plates 506 when splicing, the positioning plates 506 are inserted into the corresponding slots 509 through the slots 507, thereby being installed on the outer surface of the connecting block 508. The installation and disassembly are relatively convenient. The number of positioning plates 506 can be increased and spliced ​​together according to actual needs. The anti-slip pad 7 can increase friction and prevent slipping, which helps the staff to better grip the push rod 6 to push the entire device.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for treating expansion joints in roads and bridges, characterized in that, include: The bridge body (1) has a base (2) on its top. An adjustment structure (4) is fixedly installed on the top of the base (2) near one side. A cutting processing component (3) is fixedly installed on the top of the adjustment structure (4). The ranging component (5) is fixedly installed on the top of the base (2). The ranging component (5) includes a mounting base (501). A controller (502) is provided on the outer surface of the mounting base (501). A mounting frame (504) is connected to the center of the top of the mounting base (501) by multiple screws. An infrared rangefinder (505) is provided inside the mounting frame (504). A flashing light (503) is provided on the top of the mounting base (501) near the front surface. Multiple reinforcing rods (510) are provided on the rear surface of the mounting base (501). A connecting block (508) is fixedly installed on the top of each of the multiple reinforcing rods (510). A positioning plate (506) is provided between the front surfaces of two adjacent connecting blocks (508). The cutting processing component (3) includes a first motor (301), a first turntable (302) is fixedly installed at the output end of the first motor (301), a transmission belt (303) is movably sleeved on the outer surface of the first turntable (302), a second turntable (304) is movably connected to the inner wall of the transmission belt (303) near one side, a fixing rod (305) is fixedly installed on the rear surface of the second turntable (304), and a cutting blade (307) is fixedly installed at the center of the outer surface of the fixing rod (305).

2. The device for treating expansion joints of roads and bridges according to claim 1, characterized in that: The adjustment structure (4) includes a fixed plate (401), a plurality of support rods (408) are fixedly installed at the bottom of the fixed plate (401), a sliding sleeve (407) is movably sleeved on the outer surface of the plurality of support rods (408), a fixed seat (410) is fixedly installed on the outer surface of the plurality of sliding sleeves (407), a second motor (402) is fixedly installed on the top of the fixed plate (401) near the rear surface by an auxiliary rod, and threaded holes (403) are opened on the top of the fixed plate (401) near the front and rear surfaces, and a lead screw (404) is threaded inside the two threaded holes (403).

3. The device for treating expansion joints of roads and bridges according to claim 1, characterized in that: The bottom of the mounting base (501) is fixedly connected to the top of the base (2) near the other side. A push rod (6) is fixedly installed on the front and rear surfaces of the mounting base (501) near the top. An indicator (8) is fixedly installed on the outer surface of the center of the push rod (6). Two anti-slip pads (7) are fixedly sleeved on the outer surface of the push rod (6).

4. The device for treating expansion joints of roads and bridges according to claim 1, characterized in that: A fixing block (9) is fixedly installed on the bottom of the base (2) near the other side. A connecting rod (13) is movably embedded inside the fixing block (9). A first pulley (10) is movably sleeved on the outer surface of the connecting rod (13) near both ends.

5. The device for treating expansion joints of roads and bridges according to claim 4, characterized in that: Two T-shaped rods (11) are fixedly installed on one side of the base (2). The outer surfaces of the two T-shaped rods (11) near both ends are movably fitted with second pulleys (12). The outer surfaces of the multiple first pulleys (10) and the multiple second pulleys (12) are in contact with the top of the bridge body (1).

6. The device for treating expansion joints of roads and bridges according to claim 1, characterized in that: Each of the connecting blocks (508) has a locking hole (509) on its top near both sides. Each of the two positioning plates (506) has a locking block (507) fixedly installed on its rear surface near both sides. The outer surfaces of the locking blocks (507) are respectively movably embedded in the interior of the locking holes (509). The bottom of each of the reinforcing rods (510) is in contact with the top of the bridge body (1) near its rear surface.

7. The device for treating expansion joints of roads and bridges according to claim 2, characterized in that: Gears (405) are fixedly mounted on the top of both lead screws (404), and toothed belts (406) are meshed on the outer surfaces of the two gears (405). The output end of the second motor (402) is fixedly connected to the top of one of the gears (405).

8. The device for treating expansion joints of roads and bridges according to claim 2, characterized in that: One end of each of the two lead screws (404) is movably inserted through the bottom of the fixed base (410), and one end of each of the two lead screws (404) is movably embedded in the bottom of the base (2). The bottoms of the multiple support rods (408) are fixedly installed inside the base (2) near one side of the bottom.

9. The device for treating expansion joints of roads and bridges according to claim 2, characterized in that: Two multi-section telescopic rods (409) are fixedly installed inside the base (2) near the bottom of the other side. The tops of the two multi-section telescopic rods (409) are fixedly installed on the bottom of the fixed seat (410) near one side.

10. The device for treating expansion joints of roads and bridges according to claim 2, characterized in that: The outer surfaces of the fixed rod (305) near both ends are movably fitted with support blocks (306). The bottoms of the two support blocks (306) are fixedly installed on the top of the fixed seat (410) near one side. The bottom of the first motor (301) is fixedly installed on the top of the fixed seat (410).

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