Foundation pit support beam body cleaning device and construction method

Abstract

The application discloses a kind of foundation pit inner support beam body cleaning device and construction method, belong to foundation pit construction technical field, it includes support, setting on support Hangs on arm, setting on support telescopic arm, and setting on telescopic arm cleaning component;The Hangs on arm and telescopic arm are spaced apart in height direction, and interval interval is formed between Hangs on arm and telescopic arm, which can be included in beam body, after interval interval cooperates with beam, Hangs on arm hangs in beam body top and can bear stress, and telescopic arm is located at the bottom of beam body, and the cleaning component is pushed to clean the bottom of beam body.The application can effectively save the cleaning of inner support beam body bottom surface residue.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and more specifically, to a device and construction method for cleaning support beams inside a foundation pit. Background Technology

[0002] Excavation of foundation pits typically employs a phased excavation and phased support method. Internal supports are crucial for ensuring the stability of the foundation pit structure and guaranteeing construction safety. Types of internal supports mainly include steel supports and reinforced concrete supports. After the excavation layer is completed, some residue adheres to the surface of the internal support components (including cap beams and tie beams). This residue includes soil, fragments of wooden formwork, plastic film, and clumps of concrete that has overflowed from the formwork. Reinforced concrete support beams, in particular, accumulate a significant amount of soil and other concrete residue.

[0003] The dirt or concrete adhering to and solidifying on the surface of the reinforced concrete support beam is very difficult to clean. The dirt or concrete adhering to the bottom surface of the reinforced concrete support beam is the most difficult to clean, as it is hard to reach. Figure 4 As shown, on-site construction workers use hand-operated electric picks and other impact equipment to shake off soil or concrete, but this method is difficult to control, has low cleaning efficiency, requires manual support which is very physically demanding, and is also unsafe due to the falling soil or concrete. Summary of the Invention

[0004] To address the aforementioned problems, the purpose of this invention is to provide a device and construction method for cleaning the support beams inside the foundation pit, which can effectively and labor-savingly clean the residue on the bottom surface of the support beams.

[0005] To achieve these objectives of the present invention, the present invention provides a device for cleaning a support beam in a foundation pit, comprising:

[0006] Support component, hanging arm mounted on the support component, telescopic arm mounted on the support component, and cleaning component mounted on the telescopic arm;

[0007] The hanging arm and the telescopic arm are spaced apart in the height direction, forming a gap between them that can be incorporated into the beam. Based on the operation of the support, after the gap is engaged with the beam, the hanging arm hangs on the top of the beam and can bear the force, while the telescopic arm extends and retracts at the bottom of the beam to push the cleaning component to clean the bottom of the beam.

[0008] Preferably, the cleaning components include an electric pick and / or a nozzle. More preferably, the electric pick is a flat-head electric pick (also called a flat chisel electric pick), which works by driving the chisel body to impact and vibrate back and forth. The flat-head electric pick has a flat chisel body, which can increase the working area and quickly scrape off the adhered residue. The electric pick can effectively clean stubborn adhered soil and concrete residues; the nozzle is connected to a water pressurization device through a water supply pipe to spray high-pressure water to wash the bottom surface of the beam, thereby thoroughly cleaning the bottom surface of the beam. Therefore, the combination of the two can more effectively and efficiently clean the bottom surface of the beam.

[0009] Preferably, the telescopic arm is hinged to the support member, allowing it to swing up and down at the hinge point. An elastic element connects the telescopic arm and the support member, pulling or supporting the telescopic arm to cause it to tilt upwards. The cleaning component is mounted on the telescopic arm and faces the bottom surface of the beam. When the telescopic arm extends, it pushes the cleaning component against the bottom surface of the beam. In this design, the elastic element maintains elastic traction on the telescopic arm, keeping it tilted upwards, causing the cleaning component to tilt towards and act on the bottom surface of the beam. The elastic element also acts as a shock absorber. Furthermore, the telescopic arm can be a telescopic mechanism such as an electric telescopic cylinder. The lower end of the telescopic arm is mounted on the outer wall of the support member via a hinge seat.

[0010] Preferably, the support member includes a sleeve rod and a sleeve, with the sleeve rod slidably fitted inside the sleeve to form an adjustable structure. More preferably, a slider is provided at the bottom of the sleeve rod, the diameter of which is equal to the inner diameter of the sleeve. The slider is fitted into the sleeve and slides against the inner wall of the sleeve, improving the stability of the sliding fit between the sleeve rod and the sleeve. A cap is provided at the top of the sleeve, with a through hole. The sleeve rod passes through the through hole and into the sleeve, and the cap is threaded into the top of the sleeve to seal the sleeve.

[0011] Preferably, a spring is provided between the sleeve rod and the sleeve. When the sleeve rod retracts into the sleeve, the spring is tensioned, providing a restoring force. When the sleeve rod overextensions, the spring is compressed, providing an elastic return. More preferably, the spring is concentrically sleeved on the outside of the sleeve rod, with the lower end of the spring hooked or fixed to a slider, and the upper end hooked or fixed to the underside of the sleeve cover, facilitating installation and removal. In this design, the spring provides a certain degree of shock absorption.

[0012] Preferably, a sliding seat is slidably mounted on the sleeve rod, and a hanging arm is fixed to the top of the sleeve rod. When the sliding seat moves along the sleeve rod, it is limited above by the hanging arm and below by the cylinder cover. A clamping plate is fixed on the sliding seat. The clamping plate and the hanging arm combine to form a clamping structure for the beam, which holds the beam tightly, improves stability, and facilitates the operation of cleaning components such as electric picks.

[0013] Preferably, the first end of the elastic element is connected to the slide block, and the second end is connected to the telescopic arm. When the telescopic arm extends, the elastic element pulls the slide block in the opposite direction towards the beam, so that the clamping plate keeps in contact with the beam, improving stability and withstanding the impact and vibration of the cleaning components such as electric picks during operation.

[0014] Preferably, the telescopic arm is mounted on the sleeve via a hinged seat. Since the sleeve and the sleeve rod are slidably connected, they can be driven to rotate by the construction personnel, thereby causing the telescopic arm and cleaning components to swing, changing the cleaning position and increasing the area that can be cleaned and covered.

[0015] Preferably, it also includes a back plate, which is set on the sleeve or the hanging arm. The combination of the hanging arm, the clamping plate and the back plate constitutes a clamping structure that acts on the top, bottom and sides of the beam, resulting in higher stability.

[0016] More preferably, the back plate is fixed on a mounting sleeve, which is engaged with the sleeve rod and clamped in place, making disassembly and replacement more convenient.

[0017] Preferably, the positions where the hanging arm, clamping plate, back plate, and beam contact the beam are all provided with rubber layers to increase friction and provide cushioning.

[0018] Preferably, the lower part of the cleaning component is also equipped with a guide plate. The cleaned residue falls onto the guide plate and falls forward along the guide plate, avoiding direct impact on the construction workers below.

[0019] Preferably, both the telescopic boom and the cleaning components are equipped with electric switches on the support components for easy operation by construction personnel.

[0020] Preferably, for beams such as crown beams with standard width specifications, the length of the hanging arm is set to 0.5 to 1.5 meters. Preferably, it is 1 meter.

[0021] The construction method of the above-mentioned foundation pit support beam cleaning device provided by the present invention includes:

[0022] Initially, the telescopic boom is in its shortened state. Using the support mechanism (e.g., manually operated by the worker), the boom is hooked onto the top surface of the beam to be cleaned. At this point, the beam is within the gap between the boom and the telescopic boom. The telescopic boom is then extended, pushing the cleaning component (electric pick) against the bottom surface of the beam to remove adhering residue. Simultaneously, the cleaning component sprays high-pressure water to thoroughly clean the bottom surface of the beam. After cleaning, the telescopic boom is shortened back to its initial state. Using the support mechanism (e.g., manually operated by the worker), the boom is moved to the next position, and the above steps are repeated for further cleaning.

[0023] The present invention has at least the following beneficial effects:

[0024] The device of the present invention has a support member, a hanging arm, a telescopic arm, and a cleaning component. In use, the hanging arm can be directly hung on the top surface of the beam to bear the weight and the force exerted by the cleaning component during operation, effectively reducing the burden on construction personnel to operate with the support member, improving stability, and facilitating operation. The telescopic arm actively extends and retracts to push the cleaning component along the bottom surface of the beam to clean up the residue, making it more labor-saving and efficient.

[0025] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the first structure of the foundation pit support beam cleaning device described in this invention;

[0027] Figure 2 This is a schematic diagram of the second structure of the foundation pit support beam cleaning device described in this invention;

[0028] Figure 3 This is a schematic diagram of the structure of the foundation pit support beam cleaning device described in this invention in its usage state;

[0029] Figure 4 The image shows on-site construction workers using a hand-operated electric pick to clean the bottom of the beam. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to examples, so that those skilled in the art can implement it based on the description.

[0031] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0032] like Figures 1-3 As shown, a device for cleaning support beams inside a foundation pit includes:

[0033] The support includes a support member, a hanging arm 10 mounted on the support member, a telescopic arm 90 mounted on the support member, and a cleaning component mounted on the telescopic arm 90. In the illustration, the support member includes upper and lower sections, with the upper section being a sleeve 20 and the lower section being a sleeve 40. The cleaning component includes an electric pick 70 and a nozzle 80.

[0034] The hanging arm 10 and the telescopic arm 90 are spaced apart in the height direction, thus forming an interval 100 between the hanging arm 10 and the telescopic arm 90 that can accommodate the beam 300. Based on the operation of the support by the construction personnel, after the beam 300 enters the interval 100 and cooperates, the hanging arm 10 hangs on the top of the beam 300 and can bear the force, while the telescopic arm 90 is located at the bottom of the beam 300 and extends and retracts to push the cleaning component to clean the bottom of the beam 300.

[0035] The implementation process of this scheme is as follows:

[0036] like Figure 1 As shown, in the initial state, the telescopic arm 90 is in the retracted state, as... Figure 3 As shown, construction worker 200 uses a hand support to hang the hanging arm 10 on the top surface of the beam 300 to be cleaned. At this time, the beam 300 is located in the interval 100 between the hanging arm 10 and the telescopic arm 90. Figure 2 and 3 As shown, the telescopic boom 90 extends, pushing the cleaning component (such as an electric pick) against the bottom surface of the beam. As the boom extends further, the cleaning component moves along the bottom surface of the beam, scraping off the adhering residue. When the cleaning component is equipped with a nozzle, it sprays high-pressure water to thoroughly clean the bottom surface of the beam, improving the accuracy and efficiency of the cleaning process. After cleaning, the telescopic boom 90 retracts back to its initial state. Workers then use the support arm to move the boom to the next position and repeat the above steps for cleaning.

[0037] Furthermore, in another implementation, such as Figure 1 As shown, the cleaning components include an electric pick 70 and / or a nozzle 80, which can be installed simultaneously or separately. More preferably, the electric pick 70 is a flat-headed electric pick (also called a flat chisel electric pick). The electric pick works by driving the chisel body 701 to impact and vibrate back and forth. The flat-headed electric pick has a flat chisel body 701, which can increase the working area and quickly scrape off the adhered residue. The electric pick can effectively clean stubborn adhered soil and concrete residues. The nozzle 80 is connected to a water supply booster device on the ground through a water supply pipe 801, and is used to spray high-pressure water to wash the bottom surface of the beam, thereby thoroughly cleaning the bottom surface of the beam. Therefore, the combination of the two can clean the bottom surface of the beam more effectively and efficiently. In the illustration, the nozzle is set on the top or side of the outer wall of the electric pick and faces the bottom surface of the beam, so it can accurately act on the bottom surface of the beam, reducing waste and improving efficiency. Particularly preferred is that the nozzle faces the gap between the electric pick chisel body and the beam, impacting the bonding surface between the residue and the beam, resulting in a good cleaning effect.

[0038] Furthermore, in another implementation, such as Figure 1As shown, the telescopic arm 90 is hinged to the support member, allowing it to swing up and down based on the hinge point. An elastic element 60 connects the telescopic arm 90 to the support member, pulling or supporting the telescopic arm 90 so that it tilts upwards. The cleaning components (including an electric pick 70 and a nozzle 80) are mounted and fixed on the telescopic arm 90, facing the bottom surface of the beam 300. When the telescopic arm 90 extends, it pushes the cleaning components against the bottom surface of the beam. Furthermore, when the telescopic arm 90 extends, the elastic element 60 is stretched, thus pulling the telescopic arm with elastic force to maintain elastic resistance against the beam 300. This facilitates continuous impact of the electric pick on residue and also helps with shock absorption. In this design, the elastic element maintains elastic traction on the telescopic arm, keeping it tilted upwards, causing the cleaning components to tilt towards and act on the bottom surface of the beam. The elastic element also acts as a shock absorber. Furthermore, the telescopic arm can be a telescopic mechanism such as an electric telescopic cylinder for convenient electric control. In the illustration, the lower end of the telescopic arm 90 is mounted on the outer wall of the lower end sleeve 40 of the support member via a hinge seat 901.

[0039] Furthermore, in another implementation, such as Figures 1-3 As shown, the support member includes a sleeve 20 and a sleeve 40. The sleeve 20 is slidably fitted inside the sleeve 40, forming a structure that can slide and extend / retract relatively. Preferably, as... Figure 1 As shown, a slider 201 is provided at the bottom of the sleeve 20. The diameter of the slider 201 is equal to the inner diameter of the sleeve 40. After the slider 201 is fitted into the sleeve 40, it slides against the inner wall of the sleeve 40, increasing the sliding contact surface and improving the stability of the sliding fit between the sleeve 20 and the sleeve 40. In the illustration, a cap 401 is provided at the top of the sleeve 40. A through hole is provided in the center of the cap 401. The sleeve 20 passes through the through hole and through the cap 401 to fit into the sleeve 40. The cap 401 and the top of the sleeve 40 are threaded together to close the top of the sleeve 40.

[0040] Furthermore, in another implementation, such as Figures 1-3 As shown, a spring 50 is coaxially sleeved between the outer wall of the sleeve rod and the inner wall of the sleeve. One end of the spring 50 is connected to the sleeve rod, and the other end is connected to the sleeve. When the sleeve rod is excessively retracted into the sleeve 40, the spring 50 is tensioned, and the spring provides a restoring force. When the sleeve rod 20 is excessively extended out of the sleeve 40, the spring 50 is compressed, and the spring provides elastic recovery. Preferably, the lower end of the spring 50 is hooked or fixed to the slider 201, and the upper end of the spring 50 is hooked or fixed to the bottom of the sleeve cover 401 for easy installation and removal. In this design, the spring can provide a certain degree of shock absorption and maintain a certain degree of elastic opening and closing between the telescopic arm 90 and the hanging arm 10, which facilitates clamping the beam 300.

[0041] Furthermore, in another implementation, such as Figures 1-3As shown, a sliding seat 30 is slidably mounted on the sleeve rod 20. The sliding seat 30 has a central hole that mates with the sleeve rod 20. The hanging arm 10 is fixed to the top of the sleeve rod 20. When the sliding seat 30 moves along the sleeve rod, it is limited above by the hanging arm 10 and below by the cylinder cover 40. A clamping plate 301 is fixed on the sliding seat 30. The clamping plate 301 and the hanging arm 10 combine to form a clamping structure for the beam. Since the sliding seat can slide up and down, the clamping range width of the clamping structure is adjustable to adapt to the size of the beam. The clamping structure holds the beam tightly, which can improve stability and facilitate the operation of cleaning components such as electric picks.

[0042] Furthermore, in another implementation, such as Figures 1-3 As shown, the first end of the elastic element 60 is connected to the slide block 30, and the second end is connected to the telescopic arm 90 or the cleaning component. When the telescopic arm 90 extends, the elastic element 60 pulls the slide block 30 to the beam body direction to keep it in contact with the beam body 300, thereby improving stability and withstanding the impact and vibration of the cleaning components such as electric picks during operation.

[0043] Furthermore, in another implementation, such as Figures 1-3 As shown, the telescopic arm 90 is mounted on the sleeve via the hinge seat 901. Since the sleeve 40 and the sleeve rod 20 are concentrically slidably connected, the construction personnel can rotate the sleeve, thereby causing the telescopic arm 90 and the cleaning components to swing, changing the cleaning position and increasing the area that can be cleaned and covered.

[0044] Furthermore, in another implementation, such as Figures 1-3 As shown, it also includes a back plate 102, which is set on the sleeve rod 20 or the hanging arm 10. The hanging arm 10, the clamping plate 301, and the back plate 102 together form a clamping structure that acts on the top, bottom and sides of the beam, resulting in higher stability.

[0045] Furthermore, in another implementation, such as Figures 1-3 As shown, the back plate 102 is mounted on the sleeve rod 20 via the mounting sleeve 104. The mounting sleeve 104 is concentrically connected to the sleeve rod 20. The back plate 102 and the mounting sleeve 104 are welded and fixed. The sleeve rod 20 is equipped with an upper nut 103 and a lower nut 105 to clamp and fix the hanging arm 10 and the mounting sleeve 104 to the top of the sleeve rod, thereby facilitating disassembly and replacement.

[0046] Furthermore, in another implementation, such as Figures 1-3 As shown, rubber layers for increasing friction and cushioning are provided at the contact points between the hanging arm 10, the slide 30, the clamping plate 301, the back plate 102 and the beam 300. In the illustration, the bottom surface of the hanging wall 10 is provided with a first rubber layer 101, the top surface of the clamping plate 301 is provided with a second rubber layer 102, and the side surface of the slide is provided with a third rubber layer 302.

[0047] Furthermore, in another implementation, such as Figures 1-3 As shown, a guide plate 702 is also installed at the lower part of the cleaning component. The debris that falls off the cleaning component lands on the guide plate 702 and falls forward along it, preventing it from directly hitting the workers below. In the illustration, the guide plate 702 is installed under the electric pick 70. Debris scooped up or pried off by the electric pick falls onto the guide plate 702, which tilts forward, allowing the debris to slide automatically forward.

[0048] Preferably, the electric switches for the telescopic boom 90, the electric pick for the cleaning component, and the nozzle are all mounted on the support member for easy operation by construction personnel. Alternatively, the electric switches for the telescopic boom 90, the electric pick for the cleaning component, and the nozzle can be installed as remote control switches instead of on the support member, with the remote control switches connected to the telescopic boom, the electric pick, and the nozzle via wired or wireless connection.

[0049] Preferably, for beams such as crown beams with conventional width specifications, the length of the hanging arm is set to 0.5 to 1.5 meters. Preferably, it is 1 meter. More preferably, the length of the hanging arm is equal to or greater than the width of the beam, and the end of the hanging arm is also provided with a downward hook. When the hanging arm is hung on the top surface of the beam, the hook hooks onto the back side of the beam (the side opposite to the back plate 102), forming a multi-faceted stress-bearing structure and improving hanging stability.

[0050] Preferably, the sleeve 40 in the support member can also be configured as a telescopic structure, thereby adjusting the length to adapt to beams of different heights.

[0051] This invention provides a more detailed construction method for a foundation pit support beam cleaning device, comprising:

[0052] like Figure 1 As shown, in the initial state, the telescopic arm 90 is in the retracted state, as... Figure 3 As shown, the construction worker holds the sleeve of the support component and hangs the hanging arm 10 on the top surface of the beam 300 to be cleaned, with the back plate 102 preferably in close contact with the beam.

[0053] If the distance between the clamping plate 301 and the hanging arm 10 is less than the beam thickness (the distance between the top and bottom surfaces of the beam), the construction workers can pull down the sleeve 40 to shorten the spring 50 and slide the slide block 30 down, thereby increasing the distance between the clamping plate 301 and the hanging arm 10 to match the beam thickness, and thus clamping the beam 300.

[0054] like Figure 2 and 3As shown, when the telescopic arm 90 is extended, the chisel body 701 of the electric pick at the top of the telescopic arm contacts the residue on the bottom surface of the beam. The electric pick 70 drives the chisel body to continuously scrape off the residue, and at the same time, the nozzle is activated (or as needed) to spray high-pressure water jets onto the bottom surface of the beam for rinsing. The extension of the telescopic arm 90 can also pull the slide 30 towards the beam side through the elastic element 60.

[0055] During the operation, the construction workers can rotate the sleeve 40, causing the swing arm to swing the cleaning components and change the cleaning position, thereby increasing the area that can be covered.

[0056] After cleaning one location, pause the electric hammer and nozzle, start the telescopic boom 90 to retract to the initial state, and then the construction workers move the hanging arm 10 to the next cleaning location by operating the sleeve of the support component, and repeat the above steps to carry out the cleaning operation.

[0057] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Further modifications can be readily implemented by those skilled in the art.

Claims

1. A device for cleaning support beams inside a foundation pit, characterized in that, include: Support component, hanging arm mounted on the support component, telescopic arm mounted on the support component, and cleaning component mounted on the telescopic arm; The hanging arm and the telescopic arm are spaced apart in the height direction, forming a gap between the hanging arm and the telescopic arm that can be incorporated into the beam. After the gap is engaged with the beam, the hanging arm hangs on the top of the beam and can bear the force, while the telescopic arm extends and retracts at the bottom of the beam to push the cleaning component to clean the bottom of the beam. The telescopic arm is hinged to the support, allowing the telescopic arm to swing up and down at the hinge point. An elastic element connects the telescopic arm and the support, which pulls or supports the telescopic arm, causing it to tilt upwards. The cleaning component is installed on the telescopic arm and faces the bottom surface of the beam. When the telescopic arm extends, it can push the cleaning component to act on the bottom surface of the beam. The support component includes a sleeve rod and a sleeve. The sleeve rod is slidably sleeved inside the sleeve, and a spring is provided between the two to form a structure that can be elastically extended and adjusted. A sliding seat is slidably mounted on the sleeve rod, and a hanging arm is fixed to the top of the sleeve rod. When the sliding seat moves along the sleeve rod, it is limited by the hanging arm above and by the cylinder cover below. A clamping plate is fixed on the sliding seat, and the clamping plate and the hanging arm combine to form a clamping structure for the beam. The first end of the elastic element is connected to the slide block, and the second end is connected to the telescopic arm. When the telescopic arm extends, the elastic element pulls the slide block in the opposite direction towards the beam, so that the clamping plate keeps in contact with the beam.

2. The device for cleaning the supporting beam in the foundation pit as described in claim 1, characterized in that, The cleaning components include an electric pick and / or a nozzle.

3. The device for cleaning the supporting beam in the foundation pit as described in claim 2, characterized in that, The electric pick is a flat-headed electric pick; the nozzle is connected to a water pressurization device via a water supply pipe and is used to spray high-pressure water to wash the bottom surface of the beam.

4. The device for cleaning the supporting beam in the foundation pit as described in claim 3, characterized in that, The nozzle is directed toward the gap between the electric pick and the beam.

5. The device for cleaning the supporting beam in the foundation pit as described in claim 1, characterized in that, The bottom of the sleeve is provided with a slider, the diameter of which is equal to the inner diameter of the sleeve. The slider is fitted into the sleeve and slides against the inner wall of the sleeve. The top of the sleeve is provided with a cap, through which the sleeve passes and is fitted into the sleeve. The cap is threaded into the top of the sleeve to seal it. The spring is concentrically fitted on the outside of the sleeve. The lower end of the spring is hooked or fixed to the slider, and the upper end of the spring is hooked or fixed to the cap.

6. The device for cleaning the supporting beam in the foundation pit as described in claim 1, characterized in that, It also includes a back plate, which is set on the sleeve or the hanging arm. The hanging arm, clamping plate and back plate together form a clamping structure that acts on the top, bottom and sides of the beam. The hanging arm, clamping plate and back plate are all provided with rubber layers to increase friction and buffer at the contact points with the beam.

7. The device for cleaning the supporting beam in the foundation pit as described in claim 1, characterized in that, The cleaning component is also equipped with a guide plate at the bottom. The residue that falls off the cleaning component falls onto the guide plate and falls forward along the guide plate.

8. The device for cleaning the supporting beam in the foundation pit as described in claim 1, characterized in that, The length of the hanging arm is set to 0.5 to 1.5 meters; the length of the hanging arm is 1 meter; the telescopic arm is an electric telescopic cylinder.

9. A construction method for the pit support beam cleaning device as described in claim 1, characterized in that, include: In the initial state, the telescopic arm is in the shortened state. The control support hangs the hook arm on the top surface of the beam to be cleaned. At this time, the beam is located in the interval between the hook arm and the telescopic arm. The telescopic boom extends and pushes the cleaning component against the bottom of the beam to remove the adhering residue. At the same time, the cleaning component sprays high-pressure water to clean the bottom of the beam. After cleaning, start the telescopic arm to shorten it back to its initial state, operate the support to move the hanging arm to the next position, and repeat the above steps to clean.

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