A double-sided guardrail cleaning machine

Abstract

This utility model relates to a double-sided guardrail cleaning machine, comprising: a fixed frame; a telescopic frame, telescopically mounted at the end of the fixed frame; a telescopic control mechanism, disposed between the fixed frame and the telescopic frame, for controlling the telescopic frame's extension and retraction; and two brush roller mechanisms, respectively disposed on the fixed frame and the telescopic frame. Each brush roller mechanism includes a first bearing, through which a drive shaft is rotatably driven. The bottom end of the drive shaft is fitted with a brush roller body. The drive shaft on the telescopic frame has a foldable structure. By setting a transmission mechanism with a tensioning function, power can be effectively transmitted between the two brush roller mechanisms, thus requiring only one rotary drive device to drive the brush rollers on both sides to operate synchronously, significantly reducing equipment manufacturing and maintenance costs, while also reducing energy consumption and improving energy utilization efficiency.

Description

Technical Field

[0001] This utility model relates to the field of guardrail cleaning technology, specifically a double-sided guardrail cleaning machine. Background Technology

[0002] With the acceleration of urbanization, transportation infrastructure such as highways and bridges are constantly expanding. The double-sided guardrails on these facilities have become an important part of ensuring traffic safety. However, due to long-term exposure to the natural environment, guardrails are prone to pollution and corrosion, which not only affects their appearance but may also shorten their service life. Therefore, it is particularly important to clean and maintain guardrails regularly. Traditional cleaning methods mainly rely on manual labor, which is inefficient and poses certain safety hazards.

[0003] Currently, specialized mechanical equipment for cleaning double-sided guardrails has emerged on the market. This type of equipment is typically equipped with a rotating cleaning mechanism that can effectively remove stains and dust from the guardrail surface. In the current design of double-sided guardrail cleaning machines, each rotating cleaning mechanism is driven by a separate motor. While this design ensures the independent operation of each cleaning mechanism and improves the flexibility and adaptability of the cleaning process, the need for a separate motor for each rotating cleaning mechanism directly leads to increased manufacturing costs. The presence of multiple motors also increases the difficulty and workload of equipment maintenance and raises the probability of malfunctions. Therefore, a new double-sided guardrail cleaning machine is proposed to solve the above problems. Utility Model Content

[0004] This utility model provides a double-sided guardrail cleaning machine that uses a single motor to clean both sides of the guardrail, achieving the effects of reducing costs, simplifying maintenance, and improving energy efficiency.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A double-sided guardrail cleaning machine, comprising:

[0006] Fixture;

[0007] Telescopic frame, which can be telescopically installed at the end of the fixed frame;

[0008] The telescopic control mechanism is installed between the fixed frame and the telescopic frame to control the telescopic frame's extension and retraction.

[0009] There are two brush roller mechanisms, which are respectively set on the fixed frame and the telescopic frame. The brush roller mechanism includes a first bearing, and a drive shaft is rotatably and through the first bearing. The brush roller body is installed at the bottom end of the drive shaft. The drive shaft on the telescopic frame has a foldable structure.

[0010] A transmission mechanism with tensioning function is located between the transmission shafts of the two brush roller mechanisms;

[0011] A rotary drive device is mounted on a fixed frame, and a rotary transmission mechanism is provided between its transmission end and the transmission shaft on the fixed frame.

[0012] The flipping mechanism, installed on the telescopic frame, is used to control the flipping of the brush roller body on the telescopic frame.

[0013] Based on the above technical solution, the present invention can be further improved as follows.

[0014] Furthermore, the foldable structure of the drive shaft includes a fixed rod rotatably disposed in the first bearing, and a folding rod is connected to the bottom of the fixed rod via a ball joint, with the brush roller body disposed at the bottom end of the folding rod.

[0015] Furthermore, the fixed rod and the folding rod are provided with corresponding locking grooves and sliding grooves on their exteriors. The folding rod is fitted with a connecting sleeve that can slide between it and the fixed rod. The inner wall of the connecting sleeve is provided with a sliding block that slides in connection with the sliding groove. When the connecting sleeve slides between the folding rod and the fixed rod, the upper and lower ends of the sliding block are located in the sliding groove and the locking groove, respectively.

[0016] Furthermore, the flipping mechanism includes a rotating seat rotatably mounted at the end of the telescopic frame, an extension frame on the side of the telescopic frame, a pusher frame corresponding to the extension frame on the top of the rotating seat, a rotary adjustment telescopic cylinder between the extension frame and the pusher frame, the two ends of the rotary adjustment telescopic cylinder being hinged to the extension frame and the pusher frame respectively, a lifting telescopic cylinder being mounted on the rotating seat, a lifting platform being mounted on the telescopic end of the lifting telescopic cylinder passing through the rotating seat, a second bearing being mounted on the lifting platform and fitted outside the connecting sleeve, and limit rings being provided at both the upper and lower ends of the connecting sleeve, the two limit rings movably clamping the second bearing therein.

[0017] Furthermore, the end of the telescopic frame is provided with a rotating hole, in which a connecting bearing is built, and the side of the rotating seat is provided with a rotating shaft that is inserted into the rotating hole and rotatably connected to the connecting bearing.

[0018] Furthermore, the end of the fixing frame is provided with two symmetrical telescopic holes, and the end of the telescopic frame is provided with a telescopic rod that telescopically cooperates with the telescopic holes.

[0019] Furthermore, the telescopic control mechanism includes push-pull telescopic cylinders symmetrically arranged on both sides of the fixed frame, and the telescopic frame is provided with connecting seats corresponding to the push-pull telescopic cylinders. The telescopic end of the push-pull telescopic cylinder is connected to the corresponding connecting seat.

[0020] Furthermore, the transmission mechanism with tensioning function includes a chain transmission assembly mounted on two transmission shafts. The chain transmission assembly includes two first sprockets mounted on the two transmission shafts respectively, and a first chain is fitted between the two first sprockets.

[0021] The transmission mechanism with tensioning function also includes a tensioning component mounted on a fixed frame;

[0022] The tensioning assembly includes a U-shaped seat mounted on the top of the fixed frame. Two symmetrical limiting shafts are arranged between the two side walls of the U-shaped seat. A movable seat is slidably fitted on the outside of the limiting shafts. A tensioning sprocket that cooperates with the first chain is rotatably mounted on the movable seat. A telescopic shaft is provided on the side of the movable seat. An movable hole is provided on the side wall of the U-shaped seat for the telescopic shaft to pass through. The other end of the telescopic shaft passes through the movable hole and is connected to a limiting plate. A tensioning spring is fitted on the outside of the telescopic shaft between the movable seat and the side wall of the U-shaped seat.

[0023] Furthermore, the mounting bracket is provided with a mounting slot for mounting the rotary drive device, and a support bracket for supporting the rotary drive device is installed at the mounting slot.

[0024] The rotary transmission mechanism includes two second sprockets respectively mounted on the output shaft of the rotary drive device and the transmission shaft of the fixed frame, with a second chain fitted between the two second sprockets.

[0025] Furthermore, it also includes a lifting mechanism, which includes a vertical U-shaped frame with two symmetrically arranged lifting support rods. A lifting seat is provided at the end of the fixed frame away from the telescopic frame. The lifting seat is fitted onto the outside of the lifting support rod through a perforation. A push-pull telescopic cylinder is also provided on the vertical U-shaped frame between the two lifting support rods. The telescopic end of the push-pull telescopic cylinder is connected to the lifting seat. A mounting base is provided on the back of the vertical U-shaped frame.

[0026] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0027] 1. This double-sided guardrail cleaning machine, through the setting of a transmission mechanism with tension function, enables effective power transmission between the two brush roller mechanisms. Thus, only one rotary drive device is needed to drive the brush rollers on both sides to operate synchronously, which significantly reduces the equipment manufacturing and maintenance costs, while reducing energy consumption and improving energy utilization efficiency. In addition, the transmission mechanism with tension function can automatically adjust the tension of the transmission belt according to the spacing of the brush roller mechanisms, ensuring stable and reliable transmission, avoiding slippage or transmission failure, and improving the stability and service life of the whole machine.

[0028] 2. This double-sided guardrail cleaning machine has a foldable drive shaft and a flipping mechanism on the main body of the brush roller on the telescopic frame, which enables the brush roller to be easily transferred from one side of the guardrail to the other side. This allows the brush roller to cross the guardrail without affecting the transmission mechanism with tensioning function. Attached Figure Description

[0029] Figure 1A schematic diagram of a double-sided guardrail cleaning machine provided for an embodiment of this utility model;

[0030] Figure 2 for Figure 1 Another perspective illustration;

[0031] Figure 3 This is a schematic diagram of the fixing frame according to an embodiment of the present utility model;

[0032] Figure 4 This is a schematic diagram of the tensioning component according to an embodiment of the present invention;

[0033] Figure 5 This is an exploded view of the telescopic frame and the tilting mechanism according to an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the rotating seat according to an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the foldable structure of the drive shaft according to an embodiment of the present utility model;

[0036] Figure 8 This is a schematic diagram of the lifting mechanism connection provided in an embodiment of the present utility model.

[0037] The attached diagram lists the components represented by each number as follows:

[0038] 1. Fixed frame; 101. Telescopic hole; 2. Telescopic frame; 201. Telescopic rod; 202. Rotating hole; 3. First bearing; 4. Drive shaft; 401. Fixed rod; 402. Folding rod; 403. Locking groove; 404. Sliding groove; 405. Connecting sleeve; 406. Sliding block; 5. Brush roller body; 6. Rotary drive device; 601. Mounting groove; 602. Support frame; 7. Rotary transmission mechanism; 701. Second sprocket; 702. Second chain; 8. Chain drive assembly; 801. First sprocket; 802. First chain; 9. Tensioning assembly; 901. U-shaped seat; 903. Limiting shaft; 904. Movable seat; 905. Movable hole; 906. Telescopic shaft; 907. Limiting plate; 908. Tension spring; 909. Tension sprocket; 10. Telescopic control mechanism; 1001. Push-pull telescopic cylinder; 1002. Connecting seat; 11. Tilting mechanism; 110. Lifting platform; 111. Rotating shaft; 112. Rotating seat; 113. Lifting telescopic cylinder; 114. Extension frame; 115. Rotary adjustment telescopic cylinder; 116. Second bearing; 117. Pushing frame; 12. Lifting seat; 13. Through hole; 14. Vertical U-shaped frame; 15. Lifting support rod; 16. Pushing telescopic cylinder; 17. Mounting seat. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0040] like Figure 1-8 As shown, a double-sided guardrail cleaning machine in this embodiment includes: a fixed frame 1, a telescopic frame 2, a telescopic control mechanism 10, a brush roller mechanism, a transmission mechanism with tensioning function, a rotary drive device 6, and a flipping mechanism 11.

[0041] The telescopic frame 2 is telescopically mounted at the end of the fixed frame 1. Specifically, the end of the fixed frame 1 is provided with two symmetrical telescopic holes 101, and the end of the telescopic frame 2 is provided with a telescopic rod 201 that telescopically cooperates with the telescopic holes 101. The telescopic frame 2 can be telescopically mounted by telescopically mounting the telescopic rod 201 in the telescopic holes 101.

[0042] The telescopic control mechanism 10 is located between the fixed frame 1 and the telescopic frame 2 and is used to control the telescopic frame 2 to extend and retract. Specifically, it includes push-pull telescopic cylinders 1001 symmetrically arranged on both sides of the fixed frame 1. The push-pull telescopic cylinders 1001 are hydraulic cylinders. The telescopic frame 2 is provided with a connecting seat 1002 corresponding to the push-pull telescopic cylinder 1001. The extension and retraction end of the push-pull telescopic cylinder 1001 is connected to the corresponding connecting seat 1002, so that the extension and retraction adjustment of the telescopic frame 2 can be realized by the extension and retraction of the push-pull telescopic cylinder 1001.

[0043] It should be noted that, in order to prevent the telescopic frame 2 from detaching during the adjustment process, the length of the telescopic rod 201 and the telescopic hole 101 is greater than the telescopic stroke of the push-pull telescopic cylinder 1001.

[0044] There are two brush roller mechanisms, one installed on the fixed frame 1 and the other on the telescopic frame 2. The two brush roller mechanisms can clamp the railing between them, thus achieving double-sided cleaning. Each brush roller mechanism includes a first bearing 3, through which a drive shaft 4 is rotatably installed. The bottom end of the drive shaft 4 is equipped with a brush roller body 5, which is mounted on the bottom of the drive shaft 4 via a flange, thus providing the necessary conditions for the rotation of the brush roller body 5. The drive shaft 4 on the telescopic frame 2 is a foldable structure, which allows the brush roller body 5 on the telescopic frame 2 to be folded, making it easy to move from one side of the railing to the other. This achieves the effect of clamping the railing between the two brush roller mechanisms. At the same time, in conjunction with the telescopic frame 2, the distance between the two brush roller bodies 5 can be effectively adjusted.

[0045] The tensioning transmission mechanism is located between the drive shafts 4 of the two brush roller mechanisms. Specifically, it includes a chain drive assembly 8 mounted on the two drive shafts 4. The chain drive assembly 8 includes two first sprockets 801 mounted on the two drive shafts 4 respectively, and a first chain 802 is fitted between the two first sprockets 801. This design allows the two drive shafts 4 to rotate synchronously under the action of the first chain 802. In addition, the tensioning transmission mechanism also includes a tensioning component 9 mounted on the fixed frame 1. This allows the first chain 802 to maintain the corresponding tension when adjusting the distance between the two brush roller mechanisms, thus ensuring the transmission effect.

[0046] A rotary drive device 6 is mounted on a fixed frame 1, and a rotary transmission mechanism 7 is provided between its transmission end and the transmission shaft 4 on the fixed frame 1. The fixed frame 1 is provided with a mounting groove 601 for mounting the rotary drive device 6, and a support frame 602 for supporting the rotary drive device 6 is installed at the mounting groove 601. The rotary drive device 6 is specifically composed of a motor and a reducer transmission combination, and is mounted at the mounting groove 601 through the support frame 602. The rotary transmission mechanism 7 includes two second sprockets 701 respectively mounted on the output shaft of the rotary drive device 6 and the transmission shaft 4 of the fixed frame 1. A second chain 702 is fitted between the two second sprockets 701, thereby realizing the transmission between the second sprockets 701 and the brush rolling mechanism on the fixed frame 1. Furthermore, the transmission mechanism with tension function between the two brush rolling mechanisms realizes the effect of a single rotary drive device 6 driving two brush rolling mechanisms simultaneously. It should be noted that the chain transmission assembly 8 and the rotary transmission mechanism 7 are distributed vertically.

[0047] The flipping mechanism 11 is mounted on the telescopic frame 2 and is used to control the flipping of the brush roller body 5 on the telescopic frame 2.

[0048] In a preferred embodiment, the foldable structure of the drive shaft 4 includes a fixed rod 401 rotatably disposed in the first bearing 3, and a folding rod 402 connected to the bottom of the fixed rod 401 via a ball joint. The brush roller body 5 is disposed at the bottom end of the folding rod 402, thereby enabling the folding rod 402 to drive the brush roller body 5 at its bottom end to fold at the bottom of the fixed rod 401, thus facilitating its bypassing of the guardrail.

[0049] Furthermore, in order to enable the fixed rod 401 and the folding rod 402 to rotate synchronously when the brush roller body 5 is working, the fixed rod 401 and the folding rod 402 are provided with corresponding locking grooves 403 and sliding grooves 404 on their outer surfaces. In this embodiment, there are two locking grooves 403 and two sliding grooves 404. The folding rod 402 is fitted with a connecting sleeve 405 that can slide between it and the fixed rod 401. The inner wall of the connecting sleeve 405 is provided with a sliding block 406 that is slidably connected to the sliding groove 404. When the connecting sleeve 405 slides between the folding rod 402 and the fixed rod 401, the upper and lower ends of the sliding block 406 are respectively located in the sliding groove 404 and the locking groove 403.

[0050] With this design, the connecting sleeve 405 can slide between the folding rod 402 and the fixed rod 401, and the upper and lower ends of the sliding block 406 are respectively located in the sliding groove 404 and the locking groove 403, so that the fixed rod 401 and the folding rod 402 can rotate synchronously. At the same time, it restricts its folding and avoids affecting the rotation effect of the brush roller body 5. Secondly, when folding is required, it can be slid off the fixed rod 401 so that the connecting sleeve 405 is only located on the folding rod 402. At this time, the sliding block 406 is only located in the sliding groove 404.

[0051] In a preferred embodiment, the flipping mechanism 11 includes a rotating seat 112 rotatably disposed at the end of the telescopic frame 2, wherein the end of the telescopic frame 2 is provided with a rotating hole 202, a connecting bearing is built into the rotating hole 202, and a rotating shaft 111 is provided on the side of the rotating seat 112, which is inserted into the rotating hole 202 and rotatably connected to the connecting bearing.

[0052] The telescopic frame 2 is equipped with an extension frame 114 on its side.

[0053] The top of the rotating seat 112 is provided with a pusher 117 corresponding to the extension frame 114. A rotary adjustment telescopic cylinder 115 is provided between the extension frame 114 and the pusher 117. The rotary adjustment telescopic cylinder 115 is a hydraulic cylinder. The two ends of the rotary adjustment telescopic cylinder 115 are hinged to the extension frame 114 and the pusher 117 respectively. Thus, the rotation of the rotating seat 112 is controlled by the push of the rotary adjustment telescopic cylinder 115. It should be noted that the lengths of the extension frame 114 and the pusher 117 meet the requirements of the rotary adjustment telescopic cylinder 115 to control the rotation of the rotating seat 112.

[0054] In addition, a lifting telescopic cylinder 113 is installed on the rotating seat 112. The lifting telescopic cylinder 113 can be a hydraulic cylinder or a pneumatic cylinder. The telescopic end of the lifting telescopic cylinder 113 passes through the rotating seat 112 and is installed on a lifting platform 110. A second bearing 116 is installed on the lifting platform 110 and is fitted outside the connecting sleeve 405. Limiting rings are provided at both the upper and lower ends of the connecting sleeve 405. The two limiting rings movably clamp the second bearing 116 within them.

[0055] With this design, the lifting and telescopic cylinder 113 can be used to control the lifting and lowering of the connecting sleeve 405 without affecting the rotation of the folding rod 402 and the fixed rod 401, thereby adjusting the state of the connecting sleeve 405. In conjunction with the rotation of the rotating seat 112, the folding rod 402 and the brush roller body 5 on it can be adjusted.

[0056] In a preferred embodiment, the tensioning assembly 9 includes a U-shaped seat 901 disposed on the top of the fixed frame 1. Two symmetrical limiting shafts 903 are disposed between the two side walls of the U-shaped seat 901. A movable seat 904 is slidably fitted on the outside of the limiting shafts 903. A tensioning sprocket 909 cooperating with the first chain 802 is rotatably disposed on the movable seat 904. A telescopic shaft 906 is disposed on the side of the movable seat 904. The telescopic shaft 906 is specifically located between the two limiting shafts 903. An movable hole 905 is provided on the side wall of the U-shaped seat 901 for the telescopic shaft 906 to pass through. The other end of the telescopic shaft 906 passes through the movable hole 905 and is connected to a limiting plate 907. A tensioning spring 908 is disposed on the outside of the telescopic shaft 906 and is located between the movable seat 904 and the side wall of the U-shaped seat 901.

[0057] With this design, the tension of the first chain 802 can be adaptively adjusted by the extension and retraction of the tension spring 908.

[0058] In a preferred embodiment, the cleaning machine further includes a lifting mechanism, which includes a vertical U-shaped frame 14. Two lifting support rods 15 are symmetrically arranged on the vertical U-shaped frame 14. A lifting seat 12 is provided at the end of the fixed frame 1 away from the telescopic frame 2. The lifting seat 12 is fitted onto the outside of the lifting support rods 15 through a through hole 13. A push-pull telescopic cylinder 16 is also provided on the vertical U-shaped frame 14 between the two lifting support rods 15. The push-pull telescopic cylinder 16 is a hydraulic cylinder. The telescopic end of the push-pull telescopic cylinder 16 is connected to the lifting seat 12. A mounting base 17 is provided on the back of the vertical U-shaped frame 14.

[0059] With this design, the lifting seat 12 can be used to lift the entire cleaning machine on the lifting support rod 15 by extending and retracting the top-push telescopic cylinder 16, thereby adjusting the cleaning height. At the same time, the brush roller body 5 on the telescopic frame 2 can be folded to better cross the guardrail.

[0060] It should be noted that the mounting base 17 is used to connect the rotating arm mechanism in the prior art for unfolding or retracting the cleaning machine. This is prior art in the art, so it will not be described in detail here. In addition, the cleaning machine is also equipped with a corresponding water spraying mechanism, which is also prior art in the art, so it will not be described in detail here.

[0061] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A double-sided guardrail cleaning machine, characterized in that, include: Fixture (1); Telescopic frame (2) is telescopically mounted at the end of fixed frame (1); The telescopic control mechanism (10) is set between the fixed frame (1) and the telescopic frame (2) and is used to control the telescopic frame (2) to extend and retract; There are two brush roller mechanisms, which are respectively set on the fixed frame (1) and the telescopic frame (2). The brush roller mechanism includes a first bearing (3), and a drive shaft (4) is rotatably through the first bearing (3). The bottom end of the drive shaft (4) is equipped with a brush roller body (5). The drive shaft (4) on the telescopic frame (2) is a foldable structure. A transmission mechanism with tensioning function is set between the transmission shafts (4) of the two brush roller mechanisms; A rotary drive device (6) is mounted on a fixed frame (1), and a rotary transmission mechanism (7) is provided between its transmission end and the transmission shaft (4) on the fixed frame (1). A flipping mechanism (11) is set on the telescopic frame (2) to control the flipping of the brush roller body (5) on the telescopic frame (2).

2. The double-sided guardrail cleaning machine according to claim 1, characterized in that: The foldable structure of the drive shaft (4) includes a fixed rod (401) rotatably disposed in the first bearing (3), and a folding rod (402) is connected to the bottom of the fixed rod (401) by a ball joint. The brush roller body (5) is disposed at the bottom end of the folding rod (402).

3. The double-sided guardrail cleaning machine according to claim 2, characterized in that: The fixed rod (401) and the folding rod (402) are provided with corresponding locking grooves (403) and sliding grooves (404) on their exteriors. The folding rod (402) is fitted with a connecting sleeve (405) that can slide between it and the fixed rod (401). The inner wall of the connecting sleeve (405) is provided with a sliding block (406) that is slidably connected to the sliding groove (404). When the connecting sleeve (405) slides between the folding rod (402) and the fixed rod (401), the upper and lower ends of the sliding block (406) are respectively located in the sliding groove (404) and the locking groove (403).

4. A double-sided guardrail cleaning machine according to claim 3, characterized in that: The flipping mechanism (11) includes a rotating seat (112) rotatably mounted at the end of the telescopic frame (2), an extension frame (114) is provided on the side of the telescopic frame (2), a pusher frame (117) corresponding to the extension frame (114) is provided on the top of the rotating seat (112), and a rotary adjustment telescopic cylinder (115) is provided between the extension frame (114) and the pusher frame (117). The two ends of the rotary adjustment telescopic cylinder (115) are respectively hinged to the extension frame (114) and the pusher frame (117). A lifting telescopic cylinder (113) is installed on the rotating seat (112). The telescopic end of the lifting telescopic cylinder (113) passes through the rotating seat (112) and is installed on a lifting platform (110). A second bearing (116) is installed on the lifting platform (110) and is fitted outside the connecting sleeve (405). Limiting rings are provided at both the upper and lower ends of the connecting sleeve (405). The two limiting rings hold the second bearing (116) in place.

5. A double-sided guardrail cleaning machine according to claim 4, characterized in that: The telescopic frame (2) has a rotating hole (202) at its end, and a connecting bearing is built into the rotating hole (202). The rotating seat (112) has a rotating shaft (111) that is inserted into the rotating hole (202) and rotatably connected to the connecting bearing.

6. A double-sided guardrail cleaning machine according to claim 1, characterized in that: The end of the fixed frame (1) is provided with two symmetrical telescopic holes (101), and the end of the telescopic frame (2) is provided with a telescopic rod (201) that telescopically cooperates with the telescopic holes (101).

7. A double-sided guardrail cleaning machine according to claim 1 or 6, characterized in that: The telescopic control mechanism (10) includes push-pull telescopic cylinders (1001) symmetrically arranged on both sides of the fixed frame (1). The telescopic frame (2) is provided with a connecting seat (1002) corresponding to the push-pull telescopic cylinder (1001). The telescopic end of the push-pull telescopic cylinder (1001) is connected to the corresponding connecting seat (1002).

8. A double-sided guardrail cleaning machine according to claim 1, characterized in that: The transmission mechanism with tensioning function includes a chain transmission assembly (8) set on two transmission shafts (4). The chain transmission assembly (8) includes two first sprockets (801) respectively set on the two transmission shafts (4), and a first chain (802) is fitted between the two first sprockets (801). The transmission mechanism with tensioning function also includes a tensioning component (9) disposed on the fixed frame (1). The tensioning assembly (9) includes a U-shaped seat (901) set on the top of the fixed frame (1). Two symmetrical limiting shafts (903) are set between the two side walls of the U-shaped seat (901). A movable seat (904) is slidably fitted on the outside of the limiting shaft (903). A tensioning sprocket (909) that cooperates with the first chain (802) is rotatably set on the movable seat (904). A telescopic shaft (906) is set on the side of the movable seat (904). An movable hole (905) for the telescopic shaft (906) to pass through is set on the side wall of the U-shaped seat (901). The other end of the telescopic shaft (906) passes through the movable hole (905) and is connected to a limiting plate (907). A tensioning spring (908) is fitted on the outside of the telescopic shaft (906) between the movable seat (904) and the side wall of the U-shaped seat (901).

9. A double-sided guardrail cleaning machine according to claim 1, characterized in that: The mounting bracket (1) is provided with a mounting slot (601) for mounting the rotary drive device (6), and a support bracket (602) for supporting the rotary drive device (6) is installed at the mounting slot (601). The rotary transmission mechanism (7) includes two second sprockets (701) respectively mounted on the output shaft of the rotary drive device (6) and the transmission shaft (4) of the fixed frame (1), and a second chain (702) is fitted between the two second sprockets (701).

10. A double-sided guardrail cleaning machine according to claim 1, characterized in that: It also includes a lifting mechanism, which includes a vertical U-shaped frame (14). Two lifting support rods (15) are symmetrically arranged on the vertical U-shaped frame (14). A lifting seat (12) is provided at the end of the fixed frame (1) away from the telescopic frame (2). The lifting seat (12) is fitted onto the outside of the lifting support rod (15) through a through hole (13). A push telescopic cylinder (16) located between the two lifting support rods (15) is also provided on the vertical U-shaped frame (14). The telescopic end of the push telescopic cylinder (16) is connected to the lifting seat (12). A mounting seat (17) is provided on the back of the vertical U-shaped frame (14).

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