Bridge concrete guardrail maintenance device

Abstract

The invention discloses a bridge concrete guardrail maintenance device, and belongs to the technical field of bridge maintenance equipment. The bridge concrete guardrail maintenance device comprises a support, first scrapers and a plurality of nozzles, and further comprises a plurality of partition plates, each partition plate is arranged in the length direction of a concrete guardrail, the nozzles are arranged among the partition plates in a scattered mode, each partition plate abuts against the side wall of the concrete guardrail, and the first scrapers are arranged between every two adjacent partition plates; the first sliding groove is parallel to the side wall of the concrete guardrail; the plurality of spray heads are arranged on the sliding block; the reciprocating mechanism is used for driving the sliding block to reciprocate in the first sliding groove so as to drive the multiple spray heads to reciprocate in the vertical direction. According to the bridge concrete guardrail maintenance device, in the mortar spraying maintenance process of the concrete guardrail, the uniformity of a mortar layer on the surface of the concrete guardrail after mortar spraying can be guaranteed, and therefore the flatness of the surface of the concrete guardrail after maintenance is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of bridge maintenance equipment, and in particular to a bridge concrete guardrail maintenance device. Background Art

[0002] As an important part of transportation infrastructure, concrete guardrails play an important role in ensuring driving safety. During the long-term use of concrete guardrails, under the influence of rain and snow melting, rain erosion, and wind erosion, potholes and pits will appear on the surface of the concrete guardrails. If these potholes and pits are not repaired in time, the hydrophobicity of the surface of the concrete guardrail will deteriorate. Rainwater remaining in the potholes on the concrete surface will penetrate into the concrete guardrail, accelerating the corrosion rate of the steel bars in the concrete guardrail, thereby greatly reducing the service life of the concrete guardrail. Therefore, during the maintenance process of the concrete guardrail, if potholes and pits are found on the surface of the concrete guardrail, it is necessary to repair the surface of the concrete guardrail with mortar in time. With the help of special maintenance equipment, the efficiency of maintaining concrete guardrails can be improved.

[0003] The core components of the existing concrete guardrail maintenance device include a feeding device, a scraper and multiple nozzles. The feeding device supplies mortar for repair to the multiple nozzles, and the mortar is sprayed from the multiple nozzles onto the surface of the concrete guardrail. Then the scraper is used to scrape the mortar on the surface of the concrete guardrail. However, in this process, the amount of mortar at the direct spraying position of the nozzle on the side wall of the concrete guardrail is greater than that of the surrounding area, and the height of the mortar is often higher than that of the surrounding area, resulting in the mortar at this location being subjected to a greater extrusion force than that of the surrounding area when being scraped by the scraper. After being scraped by the scraper, although the surface of the mortar layer on the side wall of the concrete guardrail is relatively flat at the beginning, the mortar at the direct spraying position of the nozzle is subjected to a greater extrusion force from the scraper than that of the surrounding area, so the density of the mortar layer at this location is greater than that of the surrounding area. The mortar layer at the direct spraying position with high density will slowly slide due to the lack of strong support from the relatively loose mortar layer around it, so that the surface of the repaired concrete guardrail presents horizontal wavy patterns, which in turn affects the hydrophobicity of the surface of the concrete guardrail, so that the concrete guardrail still has the problem of being penetrated by rainwater. Summary of the invention

[0004] The purpose of the present invention is to overcome the problems in the prior art and provide a bridge concrete guardrail maintenance device, which can improve the uniformity of the mortar layer on the surface of the concrete guardrail during the process of spraying mortar maintenance on the concrete guardrail, thereby ensuring the flatness and hydrophobicity of the surface of the concrete guardrail after maintenance.

[0005] The present invention provides a bridge concrete guardrail maintenance device, comprising a bracket, a first scraper and a plurality of nozzles, wherein the plurality of nozzles are used for spraying mortar for repairing, the first scraper is used for smoothing the mortar sprayed on the concrete guardrail, and further comprising:

[0006] A plurality of partitions are arranged on the bracket, each partition is arranged along the length direction of the concrete guardrail, a plurality of nozzles are dispersedly arranged between the plurality of partitions, each partition abuts against the side wall of the concrete guardrail, and the first scraper is arranged between two adjacent partitions;

[0007] A first slide groove is provided on the bracket, and the first slide groove is parallel to the side wall of the concrete guardrail;

[0008] A slider is slidably connected in the first slide groove, and the plurality of nozzles are arranged on the slider;

[0009] A reciprocating mechanism is connected to the slider, and the reciprocating mechanism is used to drive the slider to reciprocate in the first slide groove, thereby driving the multiple nozzles to reciprocate in the vertical direction.

[0010] Preferably, the first scraper is arranged at the bottom end of the nozzle, the first scraper is arranged parallel to the side wall of the concrete guardrail, a gap is provided between the first scraper on the side facing the concrete guardrail and the side wall of the concrete guardrail, a plurality of nozzles are provided on the first scraper on the side facing the concrete guardrail, the nozzle is connected to the gap through the plurality of nozzles, and the bracket is connected with a telescopic mechanism, and the telescopic mechanism is used to drive the bracket to approach or move away from the side wall of the concrete guardrail to adjust the size of the gap.

[0011] Preferably, the bracket is provided with an adjustment mechanism, the adjustment mechanism is used to detect the size of the gap in real time, the adjustment mechanism is electrically connected to the telescopic mechanism, and the adjustment mechanism controls the action of the telescopic mechanism according to the size of the gap detected in real time to make the size of the gap constant.

[0012] Preferably, a block is provided on the partition, and a first spring is provided outside the partition, one end of the first spring abuts against the block, and the other end of the first spring abuts against the bracket, and the first spring is used to apply an elastic force to the partition toward the concrete guardrail through the block. Under the action of the elastic force of the first spring, the end of the partition close to the concrete guardrail is always abutted against the side wall of the concrete guardrail.

[0013] Preferably, the bracket is provided with a plurality of second horizontal slide grooves, each partition is slidably connected in a second slide groove, a block is provided on the partition, and a first spring is provided outside the partition, one end of the first spring abuts against the block, and the other end of the first spring abuts against the bracket, and the first spring is used to apply an elastic force to the partition toward the direction of the concrete guardrail through the block. Under the action of the elastic force of the first spring, the end of the partition close to the concrete guardrail is always abutted against the side wall of the concrete guardrail.

[0014] Preferably, the bracket is provided with a first sliding hole, the first sliding hole faces the side wall of the concrete guardrail, the first sliding hole is slidably connected with a first sliding rod, the first sliding rod is connected with a second scraper, the second scraper is arranged at the rear end of the multiple nozzles, the second spring is arranged outside the first sliding rod, one end of the second spring abuts against the second scraper, and the other end of the second spring abuts against the bracket, the second spring is used to apply an elastic force toward the concrete guardrail to the second scraper, and under the action of the elastic force of the second spring, the second scraper abuts against the mortar surface on the side wall of the concrete guardrail.

[0015] Preferably, a first pressure sensor is provided between the second spring and the bracket, the first pressure sensor is used to detect the real-time extrusion force exerted on the second spring, a speed regulating valve is provided between the feeding device and the nozzle, the speed regulating valve is electrically connected to a controller, the controller is electrically connected to the first pressure sensor, the controller controls the action of the speed regulating valve according to the real-time extrusion force exerted on the second spring, when the real-time extrusion force exerted on the second spring increases, the controller controls the opening of the speed regulating valve to decrease.

[0016] Preferably, each of the first slide bars is provided with a limiting slide groove, a limiting slider is slidably connected in the limiting slide groove, the limiting slider is connected to the bracket, and the limiting slide groove and the limiting slider are used to prevent the first slide bar from rotating relative to the bracket.

[0017] Preferably, the first scraper is provided with a wear-resistant coating.

[0018] Preferably, the mortar sprayed from the nozzle is in a fan shape.

[0019] Preferably, the nozzle is detachably connected to the slider.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: a bridge concrete guardrail maintenance device of the present invention, multiple partitions can divide the entire spraying area of ​​multiple nozzles into several small areas in the vertical direction, and the mortar sprayed in each area is blocked by the partition, which can prevent the mortar sprayed on the side wall of the concrete guardrail from flowing downward under the action of its own gravity, thereby improving the uniformity of the mortar layer thickness of the concrete guardrail side wall in each area, thereby ensuring the uniformity of the mortar layer thickness of the entire concrete guardrail side wall after the mortar is coated, and the reciprocating mechanism drives the slider to slide in the first slide groove, and under the drive of the slider, the nozzle moves between two adjacent partitions The first scraper reciprocates in the vertical direction between the two adjacent partitions, so that the mortar is more evenly distributed on the side wall of the concrete guardrail in the vertical direction, and as the vehicle body moves forward, the first scraper arranged between the two adjacent partitions will smooth the mortar coated on the side wall of the concrete guardrail, thereby further improving the uniformity of the thickness of the mortar layer on the side wall of the concrete guardrail after repair. After the mortar layer is smoothed by the first scraper, the density of the mortar layer on the surface of the concrete guardrail is more uniform, so the mortar layer will not slip, thereby ensuring the flatness of the surface of the concrete guardrail after maintenance, improving the hydrophobicity of the side wall of the concrete guardrail after repair, and reducing the probability of the concrete guardrail becoming moldy and black.

[0021] The nozzle sprays the mortar through the multiple nozzles on the first scraper and sprays it onto the concrete guardrail. The mortar just sprayed from the multiple nozzles can be scraped flat by the first scraper in time, reducing the flow time of the mortar on the side wall of the concrete guardrail, so that the mortar layer on the side wall of the concrete guardrail is scraped more flat by the first scraper. By setting an adjustment mechanism, when the surface of the concrete guardrail before repair fluctuates, the adjustment mechanism controls the movement of the telescopic mechanism according to the size of the gap between the first scraper and the concrete guardrail, so that the size of the gap is constant, ensuring the uniformity of the mortar coating on the side wall of the concrete guardrail, and improving the flatness of the surface of the concrete guardrail after repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the AA surface of the present invention;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the BB surface of the present invention;

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of the CC surface of the present invention;

[0026] Figure 5 It is a schematic diagram of the cross-sectional structure of the DD surface of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the reciprocating mechanism of the present invention.

[0028] Description of reference numerals:

[0029] 1. Concrete guardrail, 101. Vehicle body, 102. Feeding device, 103. Bracket, 104. Nozzle, 105. Partition, 106. First spring, 201. First slide groove, 202. Slider, 203. Reciprocating mechanism, 301. First scraper, 302. Gap, 303. Nozzle, 304. Telescopic mechanism, 4. Adjusting mechanism, 501. Second slide bar, 502. Third spring, 503. Second pressure sensor, 504. Roller, 601. First slide bar, 602. Second scraper, 603. Second spring, 701. First pressure sensor, 702. Speed ​​regulating valve, 801. Limiting slide groove, 802. Limiting slider. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-Figure 6 , the specific implementation of the present invention is described in detail, but it should be understood that the protection scope of the present invention is not limited by the specific implementation. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] like Figure 1-Figure 6 As shown, a bridge concrete guardrail maintenance device provided by the present invention includes a bracket 103, a first scraper 301 and a plurality of nozzles 104, wherein the plurality of nozzles 104 are used to spray mortar for repair, and the first scraper 301 is used to smooth the mortar sprayed on the concrete guardrail 1, and further includes: a first slide 201, a slider 202, a reciprocating mechanism 203 and a plurality of partitions 105, wherein the plurality of partitions 105 are arranged on the bracket 103, each partition 105 is arranged along the length direction of the concrete guardrail 1, and the plurality of nozzles 104 are dispersedly arranged between the plurality of partitions 105 ... Each of the partitions 105 is in contact with the side wall of the concrete guardrail 1, and the first scraper 301 is arranged between two adjacent partitions 105; the first slide groove 201 is arranged on the bracket 103, and the first slide groove 201 is parallel to the side wall of the concrete guardrail 1; the slider 202 is slidably connected in the first slide groove 201, and the multiple nozzles 104 are arranged on the slider 202; the reciprocating mechanism 203 is connected to the slider 202, and the reciprocating mechanism 203 is used to drive the slider 202 to reciprocate in the first slide groove 201, thereby driving the multiple nozzles 104 to reciprocate in the vertical direction.

[0032] The working principle of Example 1 is now briefly described:

[0033] The multiple nozzles 104 of the device are connected to a feeding device 102, and the feeding device 102 is used to supply mortar to the multiple nozzles 104. The bracket 103 is arranged on the vehicle body 101. When in use, the vehicle body 101 is driven to move along the length direction of the concrete guardrail 1, thereby driving the bracket 103 to move along the length direction of the concrete guardrail 1, maintaining the spacing between the vehicle body 101 and the concrete guardrail 1, so that each partition 105 abuts against the side wall of the concrete guardrail 1, and then controlling the feeding device 102 to operate, and the feeding device 102 supplies mortar for repair to each nozzle 104. The mortar is sprayed from the multiple nozzles 104. Since the multiple nozzles 104 are arranged in the vertical direction, the entire concrete guardrail 1 can be sprayed as the vehicle body 101 moves. Since the plurality of nozzles 104 are dispersedly arranged between the plurality of partitions 105, each partition 105 is arranged horizontally, and the plurality of partitions 105 can divide the entire spraying area of ​​the plurality of nozzles 104 into several small areas in the vertical direction, the mortar sprayed in each area is blocked by the partition 105, which can prevent the mortar from flowing downward under the action of its own gravity, thereby improving the uniformity of the mortar layer thickness of the side wall of the concrete guardrail 1 in each area, thereby ensuring the uniformity of the mortar layer thickness of the side wall of the entire concrete guardrail 1 after the mortar is applied. At the same time, the reciprocating mechanism 203 drives the slider 202 to slide in the first slide groove 201. Since the slider 202 is arranged between two adjacent partitions 10 5, driven by the slider 202, the nozzle 104 reciprocates in the vertical direction between the two adjacent partitions 105, so that the mortar is more evenly distributed on the side wall of the concrete guardrail 1 in the vertical direction, and as the vehicle body 101 moves, the first scraper 301 arranged between the two adjacent partitions 105 will smooth the mortar coated on the side wall of the concrete guardrail 1, thereby further improving the uniformity of the thickness of the mortar layer on the side wall of the repaired concrete guardrail 1. At this time, after being smoothed by the first scraper 301, the density of the mortar layer on the surface of the concrete guardrail 1 is more uniform, so the mortar layer will not slip, thereby ensuring the flatness of the surface of the concrete guardrail 1 after maintenance.

[0034] A bridge concrete guardrail maintenance device of the present invention can improve the uniformity of the thickness of the mortar layer on the surface of the repaired concrete guardrail 1, ensure the flatness of the surface of the concrete guardrail 1 after maintenance, and improve the hydrophobicity of the surface of the repaired concrete guardrail 1.

[0035] On the basis of the above embodiment, in order to make the mortar layer on the side wall of the concrete guardrail 1 more smooth by scraping by the first scraper 301 .

[0036] like Figure 1-Figure 3 and Figure 6As shown, the first scraper 301 is arranged at the bottom end of the nozzle 104, the first scraper 301 is arranged parallel to the side wall of the concrete guardrail 1, a gap 302 is provided between the first scraper 301 facing the concrete guardrail 1 and the side wall of the concrete guardrail 1, the first scraper 301 is provided with a plurality of nozzles 303 on the side facing the concrete guardrail 1, the nozzle 104 is connected to the gap 302 through the plurality of nozzles 303, the bracket 103 is connected with a telescopic mechanism 304, and the telescopic mechanism 304 is used to drive the bracket 103 to approach or move away from the side wall of the concrete guardrail 1 to adjust the size of the gap 302.

[0037] During the process of spraying the side wall of the concrete guardrail 1, the nozzle 104 sprays the mortar through the multiple nozzles 303 on the first scraper 301 and sprays it onto the concrete guardrail 1. The multiple nozzles 303 spray at the same time, which can make the mortar spraying more uniform. Since the multiple nozzles 303 are arranged on the first scraper 301, the mortar just sprayed from the multiple nozzles 303 can be scraped flat by the first scraper 301 in time, reducing the flow time of the mortar on the side wall of the concrete guardrail 1, so that the mortar layer on the side wall of the concrete guardrail 1 is scraped flatter by the first scraper 301.

[0038] As a preferred solution, Figure 3 As shown, the bracket 103 is provided with an adjustment mechanism 4, which is used to detect the size of the gap 302 in real time. The adjustment mechanism 4 is electrically connected to the telescopic mechanism 304, and the adjustment mechanism 4 controls the telescopic mechanism 304 according to the size of the gap 302 detected in real time, so that the size of the gap 302 is constant. By setting the adjustment mechanism 4, when the nozzle 104 sprays mortar on the side wall of the concrete guardrail 1, when the surface of the concrete guardrail 1 before repair fluctuates, the size of the gap 302 between the first scraper 301 and the concrete guardrail 1 is detected in real time by the adjustment mechanism 4, and then the telescopic mechanism 304 is controlled according to the size of the gap 302 detected in real time, so that the size of the gap 302 is constant, thereby ensuring the uniformity of the mortar coating on the side wall of the concrete guardrail 1, thereby further improving the flatness of the surface of the concrete guardrail 1 after repair.

[0039] As a preferred solution, Figure 4As shown, the bracket 103 is provided with a plurality of second horizontal slide grooves, each partition 105 is slidably connected in a second slide groove, a block is provided on the partition 105, and a first spring 106 is provided outside the partition 105, one end of the first spring 106 abuts against the block, and the other end of the first spring 106 abuts against the bracket 103, and the first spring 106 is used to apply an elastic force toward the concrete guardrail 1 to the partition 105 through the block, and under the action of the elastic force of the first spring 106, the end of the partition 105 close to the concrete guardrail 1 always abuts against the side wall of the concrete guardrail 1. When the surface of the concrete guardrail 1 before repair fluctuates, under the action of the elastic force of the first spring 106, each partition 105 can slide in the second slide groove, so that the partition 105 can always abut against the side wall of the pitted surface of the concrete guardrail 1, so that the partition 105 can always block the flow of mortar, thereby further ensuring the flatness of the surface of the concrete guardrail 1 after repair.

[0040] As a preferred solution, Figure 2 and Figure 3As shown, the adjustment mechanism 4 includes a second sliding bar 501, a third spring 502 and a second pressure sensor 503. A second sliding hole is provided on the bracket 103, and the second sliding hole faces the side wall of the concrete guardrail 1. One end of the second sliding bar 501 is slidably connected to the second sliding hole. The third spring 502 is provided outside the second sliding bar 501, and the third spring 502 abuts against the second pressure sensor 503. The third spring 502 is used to apply an elastic force toward the concrete guardrail 1 to the second sliding bar 501, so that one end of the second sliding bar 501 abuts against the side wall of the concrete guardrail 1. The second pressure sensor 503 is used to detect the elastic force of the third spring 502 in real time. The second pressure sensor 503 is electrically connected to a controller, and the controller is electrically connected to the telescopic mechanism 304. The controller controls the movement of the telescopic mechanism 304 according to the real-time elastic force to make the elastic force of the third spring 502 constant. When the surface of the concrete guardrail 1 before repair fluctuates, the size of the gap 302 between the first scraper 301 and the concrete guardrail 1 will change. Under the action of the elastic force of the third spring 502, the second slide bar 501 abuts against the side wall of the concrete guardrail 1, so the compression amount of the third spring 502 changes, and the elastic force of the third spring 502 changes. The second pressure sensor 503 detects the elastic force of the third spring 502 in real time. When the elastic force of the third spring 502 increases, it indicates that the side wall of the concrete guardrail 1 before repair is convex and the gap 302 is small. When the controller controls the telescopic mechanism 304 to contract, the bracket 103 is driven away from the side wall of the concrete guardrail 1, thereby driving the first scraper 301 away from the side wall of the concrete guardrail 1, so that the gap 302 increases; when the elastic force of the third spring 502 decreases, it indicates that the side wall of the concrete guardrail 1 before repair is concave, and the gap 302 is large. The controller controls the telescopic mechanism 304 to extend, and conversely, the gap 302 is reduced. The second pressure sensor 503 and the controller work together to maintain the gap 302 between the first scraper 301 and the concrete guardrail 1 relatively constant.

[0041] As a preferred solution, Figure 1 , Figure 3 , Figure 5 and Figure 6As shown, a first sliding hole is provided on the bracket 103, the first sliding hole faces the side wall of the concrete guardrail 1, a first sliding rod 601 is slidably connected in the first sliding hole, the first sliding rod 601 is connected to a second scraper 602, the second scraper 602 is arranged at the rear end of the plurality of nozzles 104, the second spring 603 is arranged outside the first sliding rod 601, one end of the second spring 603 abuts against the second scraper 602, and the other end of the second spring 603 abuts against the bracket 103, the second spring 603 is used to apply an elastic force toward the concrete guardrail 1 to the second scraper 602, and under the action of the elastic force of the second spring 603, the second scraper 602 abuts against the mortar surface on the side wall of the concrete guardrail 1. By setting the second scraper 602, after the mortar sprayed on the side wall of the concrete guardrail 1 is scraped by the first scraper 301, the second spring 603 applies an elastic force to the first slide bar 601 toward the side wall of the concrete guardrail 1, thereby driving the first slide bar 601 to apply an extrusion force to the second scraper 602 toward the side wall of the concrete guardrail 1. The second scraper 602 scrapes the mortar on the entire side wall of the concrete guardrail 1 for the second time, which can further improve the flatness of the surface of the concrete guardrail 1 after repair.

[0042] As a preferred solution, Figure 1 As shown, a first pressure sensor 701 is provided between the second spring 603 and the bracket 103, and the first pressure sensor 701 is used to detect the real-time extrusion force exerted on the second spring 603. A speed regulating valve 702 is provided between the feeding device 102 and the nozzle 104, and the speed regulating valve 702 is electrically connected to a controller, and the controller is electrically connected to the first pressure sensor 701. The controller controls the action of the speed regulating valve 702 according to the real-time extrusion force exerted on the second spring 603. When the real-time extrusion force exerted on the second spring 603 increases, the controller controls the opening of the speed regulating valve 702 to decrease. By setting the first pressure sensor 701 and the speed regulating valve 702, because the gap 302 between the first scraper 301 and the side wall of the concrete guardrail 1 is constant under the action of the second pressure sensor 503 and the controller, when the second scraper 602 scrapes the mortar for the second time, when the nozzle 104 sprays too much mortar into the gap 302, the mortar layer under the second scraper 602 is too thick. At this time, the controller controls the opening of the speed regulating valve 702 to decrease, thereby reducing the spray speed of the mortar, thereby reducing the thickness of the mortar layer. Under the action of the first pressure sensor 701 and the speed regulating valve 702, it can further ensure that the thickness of the mortar layer of the concrete guardrail 1 is uniform.

[0043] As a preferred solution, Figure 3 , Figure 5 and Figure 6As shown, the first slide bar 601 is provided with a limiting slide groove 801, and a limiting slider 802 is slidably connected in the limiting slide groove 801. The limiting slider 802 is connected to the bracket 103. The limiting slide groove 801 and the limiting slider 802 are used to prevent the first slide bar 601 from rotating relative to the bracket 103. By providing the limiting slide groove 801 and the limiting slider 802, the limiting slide groove 801 and the limiting slider 802 are used to limit the rotation of the first slide bar 601, thereby preventing the second scraper 602 from rotating, thereby ensuring the normal operation of the second scraper 602.

[0044] As a preferred solution, Figure 3 As shown, a roller 504 is provided at one end of the second slide bar 501 close to the side wall of the concrete guardrail 1. Under the action of the elastic force of the third spring 502, the roller 504 is provided on the side wall of the concrete guardrail 1 at the front end of the plurality of nozzles 104. By providing the roller 504, the second slide bar 501 rolls on the side wall of the concrete guardrail 1 through the roller 504, which can prevent the friction force applied by the side wall of the concrete guardrail 1 to the second slide bar 501 from causing the second slide bar 501 to be stuck, thereby ensuring the normal operation of the entire adjustment mechanism 4.

[0045] As a preferred solution, Figure 1 and 3 As shown, a wear-resistant coating is provided on the first scraper 301. By providing the wear-resistant coating on the first scraper 301, the wear resistance of the first scraper 301 can be improved, thereby improving the smoothness of the first scraper 301, and further improving the flatness of the surface of the concrete guardrail 1 after being scraped by the first scraper 301.

[0046] As a preferred solution, Figure 1 and 3 As shown, the mortar sprayed by the nozzle 104 is fan-shaped. The mortar sprayed by the nozzle 104 is fan-shaped, which can improve the uniformity of mortar distribution, thereby improving the flatness and hydrophobicity of the surface of the repaired concrete guardrail 1.

[0047] As a preferred solution, Figure 1 As shown, the nozzle 104 is detachably connected to the slider 202. The nozzle 104 and the slider 202 are detachably connected, which can facilitate the disassembly and installation of the nozzle 104.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge concrete guardrail maintenance device, comprising a bracket (103), a first scraper (301) and a plurality of nozzles (104), wherein the plurality of nozzles (104) are used for spraying mortar for repair, and the first scraper (301) is used for smoothing the mortar sprayed on the concrete guardrail (1), characterized in that: Also includes: A plurality of partitions (105) are arranged on the support (103), each partition (105) is arranged along the length direction of the concrete guardrail (1), a plurality of nozzles (104) are dispersedly arranged between the plurality of partitions (105), each partition (105) is in contact with the side wall of the concrete guardrail (1), and the first scraper (301) is arranged between two adjacent partitions (105); A first slide groove (201) is provided on the bracket (103), and the first slide groove (201) is parallel to the side wall of the concrete guardrail (1); A slider (202) is slidably connected in the first slide groove (201), and the plurality of nozzles (104) are arranged on the slider (202); A reciprocating mechanism (203) is connected to the slider (202), and the reciprocating mechanism (203) is used to drive the slider (202) to reciprocate in the first slide groove (201), thereby driving the plurality of nozzles (104) to reciprocate in the vertical direction.

2. The bridge concrete guardrail maintenance device according to claim 1, characterized in that: The first scraper (301) is arranged at the bottom end of the nozzle (104), the first scraper (301) is arranged parallel to the side wall of the concrete guardrail (1), a gap (302) is arranged between the side of the first scraper (301) facing the concrete guardrail (1) and the side wall of the concrete guardrail (1), the first scraper (301) is provided with a plurality of nozzles (303) on the side facing the concrete guardrail (1), the nozzle (104) is connected to the gap (302) through the plurality of nozzles (303), the bracket (103) is connected to a telescopic mechanism (304), and the telescopic mechanism (304) is used to drive the bracket (103) to approach or move away from the side wall of the concrete guardrail (1), thereby adjusting the size of the gap (302).

3. The bridge concrete guardrail maintenance device according to claim 2, characterized in that: The bracket (103) is provided with an adjustment mechanism (4), and the adjustment mechanism (4) is used to detect the size of the gap (302) in real time. The adjustment mechanism (4) is electrically connected to the telescopic mechanism (304), and the adjustment mechanism (4) controls the movement of the telescopic mechanism (304) according to the size of the gap (302) detected in real time, so as to keep the size of the gap (302) constant.

4. The bridge concrete guardrail maintenance device according to claim 1, characterized in that: The bracket (103) is provided with a plurality of second sliding grooves in the horizontal direction, each partition (105) is slidably connected in a second sliding groove, a block is provided on the partition (105), and a first spring (106) is provided outside the partition (105), one end of the first spring (106) is in contact with the block, and the other end of the first spring (106) is in contact with the bracket (103), and the first spring (106) is used to apply an elastic force toward the concrete guardrail (1) to the partition (105) through the block, and under the action of the elastic force of the first spring (106), the end of the partition (105) close to the concrete guardrail (1) is always in contact with the side wall of the concrete guardrail (1).

5. The bridge concrete guardrail maintenance device according to claim 1, characterized in that: The bracket (103) is provided with a first sliding hole, the first sliding hole faces the side wall of the concrete guardrail (1), a first sliding rod (601) is slidably connected in the first sliding hole, the first sliding rod (601) is connected to a second scraper (602), the second scraper (602) is arranged at the rear end of the plurality of nozzles (104), the second spring (603) is arranged outside the first sliding rod (601), one end of the second spring (603) abuts against the second scraper (602), and the other end of the second spring (603) abuts against the bracket (103), the second spring (603) is used to apply an elastic force toward the concrete guardrail (1) to the second scraper (602), and under the action of the elastic force of the second spring (603), the second scraper (602) abuts against the mortar surface on the side wall of the concrete guardrail (1).

6. The bridge concrete guardrail maintenance device according to claim 5, characterized in that: A first pressure sensor (701) is provided between the second spring (603) and the bracket (103), and the first pressure sensor (701) is used to detect the real-time extrusion pressure exerted on the second spring (603). A speed regulating valve (702) is provided between the feeding device (102) and the nozzle (104), and the speed regulating valve (702) is electrically connected to a controller, and the controller is electrically connected to the first pressure sensor (701). The controller controls the action of the speed regulating valve (702) according to the real-time extrusion pressure exerted on the second spring (603). When the real-time extrusion pressure exerted on the second spring (603) increases, the controller controls the opening of the speed regulating valve (702) to decrease.

7. The bridge concrete guardrail maintenance device according to claim 6, characterized in that: The first slide bar (601) is provided with a limiting slide groove (801), a limiting slider (802) is slidably connected in the limiting slide groove (801), and the limiting slider (802) is connected to the bracket (103). The limiting slide groove (801) and the limiting slider (802) are used to prevent the first slide bar (601) from rotating relative to the bracket (103).

8. The bridge concrete guardrail maintenance device according to claim 1, characterized in that: The first scraper (301) is provided with a wear-resistant coating.

9. The bridge concrete guardrail maintenance device according to claim 1, characterized in that: The mortar sprayed out by the spray head (104) is in a fan shape.

10. The bridge concrete guardrail maintenance device according to claim 1, characterized in that: The spray head (104) is detachably connected to the slider (202).

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