Guardrail maintenance device

Abstract

A guardrail maintenance device belongs to the technical field of concrete structure maintenance and comprises a supporting base, a walking mechanism used for being placed on a guardrail is arranged below the supporting base so as to achieve self-walking, a plurality of oppositely-arranged supporting legs are movably installed below the supporting base, each supporting leg comprises a telescopic stand column, the upper end of each telescopic stand column is connected with the supporting base, and the lower end of each telescopic stand column is connected with the supporting base. The lower end of the telescopic stand column is rotationally connected with a mounting seat, the mounting seat has a horizontal state and a vertical state, a plurality of first rollers are fixedly mounted on the mounting seat, a limiting bolt is mounted on the mounting seat, a plurality of spraying heads are fixedly mounted on the inner side wall of the telescopic stand column, and the first rollers with variable spatial positions are arranged below the supporting legs; the switching of contact work between the first roller and the ground or the side wall of the guardrail is met, the guardrail maintenance device adapts to different working conditions, and the whole guardrail maintenance device is convenient to transfer and use.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete structure maintenance, in particular to a guardrail maintenance device. Background Art

[0002] Bridge concrete guardrails are an important part of bridges. Their main function is to provide safety and prevent vehicles or pedestrians from falling accidentally. The maintenance of bridge concrete guardrails is an important part of ensuring the safety of bridge structures and extending their service life. They mainly utilize the hydration of cement to achieve the purpose of gradual solidification, hardening and strength increase of concrete after pouring.

[0003] Guardrail automatic maintenance devices are divided into two types according to their different usage methods. The first type is a maintenance device in which the moving part is placed on the ground and the spraying part is placed on the guardrail. Since this type of maintenance device occupies a large space as a whole and is inconvenient to use, the second type of maintenance device that can be placed directly on the guardrail (such as publication number CN215948047U) is currently more commonly used. Two opposing columns are set at the bottom of the shell, and water nozzles are set on the inner walls of the columns. By setting a hub motor at the bottom end of the shell, it is allowed to work at the upper end of the guardrail, and sprays onto the guardrail through the water nozzles on the two columns.

[0004] The existing automatic curing device is placed as a whole on the guardrail, and the inner wall of the column is also provided with a roller for contacting the side wall of the guardrail. However, the fixed position of the roller makes it impossible for it to contact the ground. When the automatic curing device is not placed on the guardrail, auxiliary equipment must be transferred, which is inconvenient to transport and use. In addition, the existing automatic curing device only has a spraying function and cannot assist in the film covering work after the concrete spraying is completed. Utility Model Content

[0005] In order to solve the technical problems in the above-mentioned background technology of the existing automatic maintenance device which is placed as a whole on the guardrail, such as the inconvenience of fixing the roller position, and the inconvenience of transporting and using the whole device, the present utility model provides a guardrail maintenance device.

[0006] The technical solution of this utility model is as follows:

[0007] The utility model provides a guardrail maintenance device, which includes a support base, a walking mechanism for being placed on the guardrail, a device box and a water tank are provided above the support base, and a plurality of relatively arranged support legs are movably installed below the support base, the support legs include a telescopic column, the upper end of the telescopic column is connected to the support base, and the lower end of the telescopic column is rotatably connected to the mounting seat, and the mounting seat has two horizontal and vertical states. A plurality of first rollers are fixedly installed on the mounting seat, and a limiting bolt is installed on the mounting seat, and a limiting hole is opened at the lower end of each telescopic column to cooperate with the limiting bolt. A plurality of spray heads are fixedly installed on the inner side wall of the telescopic column, and the spray head is connected to the water tank. A first roller with a variable spatial position is provided below the support leg to meet the switching of contact between the first roller and the ground or the side wall of the guardrail to adapt to different working conditions. A walking mechanism for contacting the top of the guardrail is also provided below the support base to achieve self-walking.

[0008] Preferably, an opening is provided at the bottom of the support base, and a bidirectional screw is rotated in the opening. The bidirectional screw is connected to the motor in the equipment box through a transmission assembly. Two relatively set connecting blocks are threadedly connected to the bidirectional screw, and each connecting block is fixed with a number of legs, which can change the distance between the relatively set legs to adapt to guardrails of different widths.

[0009] Preferably, a mounting groove is provided at the lower end of the telescopic column, one end of the mounting seat is rotatably set in the mounting groove, the end of the mounting seat connected to the telescopic column is an arc end, and the inner wall contour of the mounting groove is divided into two perpendicular straight line segments, an arc segment is provided between the two straight line segments, the arc segment cooperates with the arc end, and the two straight line segments are used to cooperate with the side walls of the mounting seat, so as to limit the position and rotation angle of the mounting seat, so that the mounting seat can only rotate 90° to achieve switching between horizontal and vertical states.

[0010] Preferably, the walking mechanism includes a wheel axle rotatably arranged under the support base, one end of the wheel axle is connected to the motor in the equipment box through a transmission assembly, and at least one second roller is fixed on the wheel axle, which can realize the self-walking of the guardrail maintenance device through the cooperation between the second roller and the guardrail.

[0011] Preferably, the wheel axle is perpendicular to the bidirectional screw and is located below the bidirectional screw to facilitate installation of the second roller.

[0012] Preferably, a film support mechanism is fixedly installed on one side of the support base located behind the direction of travel. The film support mechanism includes a beam fixedly arranged horizontally on the support base. A hook is fixedly provided at each end of the beam, on which a film roll can be installed. The maintenance device can spray the guardrail while releasing the moisturizing film during travel to assist in covering the guardrail after watering, thereby improving work efficiency and maintenance effect.

[0013] Preferably, the crossbeam is a retractable structure, and the axial direction of the crossbeam is perpendicular to the direction of travel, which effectively improves its adaptability to meet the installation requirements of film rolls of different specifications.

[0014] Preferably, a plurality of sprinkler heads are installed below the support base to spray the top of the guardrail to avoid blind spots during maintenance.

[0015] It can be seen from the above technical solutions that the advantages of the present invention are:

[0016] 1. The maintenance device can be placed on the guardrail as a whole, reducing the space occupied. A walking mechanism is provided under the support base, which can realize self-walking through the cooperation of the walking mechanism and the guardrail. The setting of the telescopic column can adapt to guardrails of different heights. The lower end of the telescopic column is provided with a mounting seat that can be switched between horizontal and vertical states, and a first roller is provided on the mounting seat, which can realize the switching of the contact between the first roller and the ground or the side wall of the guardrail, adapting to different working conditions and facilitating the transfer and use of the guardrail maintenance device as a whole.

[0017] 2. A mounting groove is provided at the lower end of the telescopic column, and one end of the mounting seat is rotatably set in the mounting groove. The inner wall contour of the mounting groove is divided into two perpendicular straight segments, and an arc segment is provided between the two straight segments. The arc segment cooperates with the arc end of the mounting seat. The two straight segments are used to cooperate with the side walls of the mounting seat to facilitate limiting the position and rotation angle of the mounting seat, so that the mounting seat can only rotate 90° to achieve switching between horizontal and vertical states.

[0018] 3. The support base is located on one side behind the direction of travel and is fixed with a film support mechanism, which can be used to install a film roll. The maintenance device can spray the guardrail while releasing the moisturizing film during the travel process to assist in covering the guardrail after spraying, thereby improving work efficiency and maintenance effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of a guardrail maintenance device according to one or more embodiments of the present invention;

[0021] Figure 2 A schematic structural diagram of a side leg deformation of a guardrail maintenance device according to one or more embodiments of the present invention;

[0022] Figure 3 for Figure 1 A schematic diagram of a local enlarged structure at the position of structure A shown;

[0023] Figure 4 This is a schematic structural diagram of a film support mechanism according to one or more embodiments of the present invention;

[0024] Figure 5 for Figure 1 The enlarged schematic diagram of the local cross-section of the structure B after deformation is shown;

[0025] Figure 6 This is a schematic diagram of the internal structure of a support base according to one or more embodiments of the present invention;

[0026] The components represented by the reference numerals in the figure are:

[0027] 1. Support base; 2. Equipment box; 3. Water tank; 4. Water pipe; 5. Telescopic column; 6. Sprinkler head; 7. Mounting base; 8. First roller; 9. Second roller; 10. Mounting slot; 11. Arc end; 12. Rotating shaft; 13. Threaded hole; 14. Connecting block; 15. Bidirectional screw; 16. Axle; 17. Beam; 18. Hook. DETAILED DESCRIPTION

[0028] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0029] In a typical embodiment of the present invention, Figures 1-6As shown, a guardrail maintenance device is proposed, including: a support base 1, support legs, an equipment box 2, a water tank 3, a mounting seat 7 and several rollers. The equipment box 2 and the water tank 3 are fixedly arranged above the support base 1. The equipment box 2 contains batteries, motors and other devices. The water tank 3 stores water, a water pump and a booster for maintaining the concrete guardrail. There are several support legs, and several support legs are relatively arranged below the support base 1. A plurality of sprinkler heads 6 are spaced apart on the inner side wall of each support leg along its length direction. The sprinkler head 6 is connected to the water pump in the water tank 3 through a water pipe 4. The booster is arranged on the water pipe 4. The support legs are slidably connected to the support base 1, and the distance between the relatively arranged support legs can be changed to adapt to guardrails of different widths. The bottom of the support legs contains rollers with variable spatial positions to meet the switching of contact between the rollers and the ground or the side walls of the guardrail to adapt to different working conditions. The bottom of the support base 1 is also provided with rollers for contacting the top of the guardrail to achieve self-propelled walking.

[0030] In this embodiment, there are six supporting legs, which are divided into two groups and arranged opposite to each other. In other embodiments, the supporting legs can also be set to other numbers, such as four, eight, etc., and the specific number can be selected according to actual needs.

[0031] like Figure 6 As shown, a rectangular opening is provided at the bottom of the support base 1, and a bidirectional screw 15 is rotated in the rectangular opening. The bidirectional screw 15 contains two threads with opposite rotation directions. Two relatively arranged connecting blocks 14 are threadedly connected to the bidirectional screw 15. The connecting blocks 14 are slidably set in the rectangular opening below the support base 1, and the connecting blocks 14 cooperate with the rectangular opening, so that under the action of the bidirectional screw 15, the two connecting blocks 14 are driven to move closer to or away from each other. A number of legs are fixed on each connecting block 14, and the legs can be driven to move by the connecting blocks 14.

[0032] The bidirectional screw 15 is connected to the motor in the equipment box 2 through a transmission assembly. Specifically, one end of the bidirectional screw 15 passes through the support base 1 and is fixedly installed with a gear, which is connected to the motor through a transmission chain, thereby realizing the driving of the bidirectional screw 15.

[0033] It is understandable that the bidirectional screw 15 can also be replaced by a bidirectional electric telescopic rod or other driving structure, as long as the two connecting blocks 14 can be controlled to move closer to or away from each other. No specific restrictions are imposed here.

[0034] A walking mechanism is provided under the support base 1, and the walking mechanism includes a wheel axle 16 rotatably arranged under the support base 1. The wheel axle 16 is perpendicular to the bidirectional screw 15, and the wheel axle 16 is located below the bidirectional screw 15. One end of the wheel axle 16 also passes through the support base 1 and is fixedly installed with a gear. The end of the wheel axle 16 on which the gear is installed is connected to the motor in the equipment box 2 through a transmission chain, thereby driving the wheel axle 16 to rotate around the axis. At least one second roller 9 is fixed on the wheel axle 16 to contact the upper end of the concrete guardrail through the second roller 9, thereby utilizing the second roller 9 to drive the maintenance device as a whole to move along the length direction of the guardrail.

[0035] The legs include a telescopic column 5, a mounting seat 7 and several first rollers 8. The telescopic column 5 is an existing telescopic structure to adapt to concrete guardrails of different heights. The upper end of the telescopic column 5 is fixedly connected to the connecting block 14, and the lower end of the telescopic column 5 is rotatably connected to the mounting seat 7. Several sprinkler heads 6 are fixedly mounted on the inner side wall of the telescopic column 5 and are spaced apart along the length direction of the telescopic column 5. The water pipe 4 is placed in the telescopic column 5 and connected to the sprinkler head 6. Several first rollers 8 are fixedly mounted on the mounting seat 7.

[0036] like Figure 5 As shown, a mounting groove 10 is provided at the lower end of the telescopic column 5, and a rotating shaft 12 is fixed in the mounting groove 10. One end of the mounting seat 7 is placed in the mounting groove 10 and is rotatably connected to the rotating shaft 12. The end of the mounting seat 7 connected to the rotating shaft 12 is an arc end 11. The inner wall contour of the mounting groove 10 is divided into two perpendicular straight line segments and an arc segment. The arc segment is located between the two straight line segments. The arc segment is used to cooperate with the arc end 11 of the mounting seat 7 to facilitate the rotation of the mounting seat 7 around the axis. The two straight line segments are used to cooperate with the side walls of the mounting seat 7 to limit the position and rotation angle of the mounting seat 7, so that the mounting seat 7 can only rotate 90° to achieve switching between horizontal and vertical states.

[0037] A threaded hole 13 is also provided on the mounting seat 7, and the threaded hole 13 passes through the mounting seat 7 for the installation of a limit bolt. Two limit holes are also provided in the mounting groove 10 at the lower end of the telescopic column 5, and the two limit holes are used to cooperate with the threaded hole 13. Specifically, when the mounting seat 7 is in a horizontal or vertical state, the threaded hole 13 is coaxially arranged with the corresponding limit hole, so that the position of the mounting seat 7 can be limited by the cooperation of the limit bolt and the limit hole.

[0038] A film support mechanism is fixedly installed on the rear side of the support base 1 (i.e., behind the direction of travel). The film support mechanism includes a beam 17 and a hook 18. The beam 17 is horizontally fixedly installed on the rear side of the support base 1. The axial direction of the beam 17 is perpendicular to the direction of travel of the maintenance device. A hook 18 is fixedly provided at each end of the beam 17 for installing a film roll. The maintenance device can spray the guardrail while releasing a moisturizing film during travel to assist in covering the guardrail after watering, thereby improving work efficiency and maintenance effect. In order to improve adaptability, the beam 17 can be set to a retractable structure.

[0039] It is understandable that, in order to avoid blind spots during maintenance, a number of spray heads 6 may be installed below the support base 1 to spray the top of the guardrail.

[0040] The specific working principle is:

[0041] When the guardrail maintenance device needs to be moved, the mounting seats 7 at the lower ends of all telescopic columns 5 can be adjusted to be perpendicular to the telescopic columns 5 so that all first rollers 8 are in contact with the ground, thereby manually pushing the guardrail maintenance device to the designated position.

[0042] When the guardrail needs to be maintained, the guardrail maintenance device is pushed to the vicinity of the guardrail. Since most guardrails are special-shaped structures (the outer wall is flat and the inner wall is a special-shaped surface), before pushing the guardrail maintenance device onto the guardrail, the length of the telescopic column 5 is adjusted according to the height of the guardrail so that the second roller 9 can be placed on the top of the guardrail. Then, the mounting seat 7 at the lower end of the telescopic column 5 on the outer side of the guardrail is adjusted so that the mounting seat 7 is set vertically, and the motor is started to drive the bidirectional screw 15 so that the legs on both sides of the guardrail approach each other, the first roller 8 on the leg on the outer side of the guardrail contacts the outer wall of the guardrail, the first roller 8 on the leg on the inner side of the guardrail contacts the ground, and the second roller 9 contacts the top of the guardrail.

[0043] The starting motor drives the second roller 9 to rotate, which in turn drives the guardrail maintenance device to move along the length direction of the guardrail. While moving, the spray head 6 sprays water toward the guardrail. At the same time, the moisturizing film placed on the film support mechanism is manually pulled down and covered on the sprayed guardrail to perform moisturizing work. Since the guardrail maintenance device sprays by itself, the moisturizing film does not need to be pulled hard by humans when it is released, which effectively reduces labor intensity and improves work efficiency and maintenance effect.

[0044] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A guardrail maintenance device, comprising: A support base (1) is provided below the support base (1) with a walking mechanism for being placed on a guardrail, characterized in that an equipment box (2) and a water tank (3) are provided above the support base (1), and a plurality of relatively arranged supporting legs are movably installed below the support base (1), the supporting legs comprising a telescopic column (5), the upper end of the telescopic column (5) is connected to the support base (1), the lower end of the telescopic column (5) is rotatably connected to a mounting seat (7), the mounting seat (7) has two states, horizontal and vertical, a plurality of first rollers (8) are fixedly installed on the mounting seat (7), a limiting bolt is installed on the mounting seat (7), a limiting hole for cooperating with the limiting bolt is opened at the lower end of each telescopic column (5), a plurality of spray heads (6) are fixedly installed on the inner side wall of the telescopic column (5), and the spray heads (6) are connected to the water tank (3).

2. The guardrail maintenance device according to claim 1, characterized in that: An opening is provided below the support base (1), and a bidirectional screw (15) is rotatably provided in the opening. The bidirectional screw (15) is connected to a motor in the equipment box (2) through a transmission assembly. Two oppositely arranged connecting blocks (14) are threadedly connected to the bidirectional screw (15), and each connecting block (14) is fixed with a plurality of legs.

3. The guardrail maintenance device according to claim 1, characterized in that: The lower end of the telescopic column (5) is provided with a mounting groove (10), one end of the mounting seat (7) is rotatably arranged in the mounting groove (10), the end of the mounting seat (7) connected to the telescopic column (5) is an arc end (11), the inner wall profile of the mounting groove (10) is divided into two perpendicular straight line segments, an arc segment is provided between the two straight line segments, the arc segment cooperates with the arc end (11), and the two straight line segments are used to cooperate with the side walls of the mounting seat (7).

4. The guardrail maintenance device according to claim 2, characterized in that: The walking mechanism comprises a wheel axle (16) rotatably arranged below the support base (1), one end of the wheel axle (16) is connected to the motor in the equipment box (2) through a transmission assembly, and at least one second roller (9) is fixedly provided on the wheel axle (16).

5. The guardrail maintenance device according to claim 4, characterized in that: The wheel shaft (16) is perpendicular to the bidirectional screw rod (15), and the wheel shaft (16) is located below the bidirectional screw rod (15).

6. The guardrail maintenance device according to claim 1, characterized in that: A film support mechanism is fixedly mounted on one side of the support base (1) located at the rear of the travel direction. The film support mechanism comprises a crossbeam (17) fixedly arranged horizontally on the support base (1), and a hook (18) is fixedly provided at each end of the crossbeam (17).

7. The guardrail maintenance device according to claim 6, characterized in that: The crossbeam (17) is a telescopic structure, and the axial direction of the crossbeam (17) is perpendicular to the traveling direction.

8. The guardrail maintenance device according to claim 1, characterized in that: A plurality of spray heads (6) are installed below the support base (1).

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