KR20210049287A - Weight balancing system, and bridge inspection vehicle used it, and weight balancing method - Google Patents

Abstract

The present invention relates to a weight balancing system for a bridge inspection vehicle, a bridge inspection vehicle equipped with the same, and a weight balancing method. The present invention can prevent overturning of a vehicle by balancing the weight of a structure on a chassis during work or driving so that a vehicle body load is not unbalanced, and can prevent accidents by improving vehicle body stability during work and driving. A weight balancing system installed in a bridge inspection vehicle comprises: a lift; a plurality of rooms for accommodating the weight by dividing a space in the chassis of a special vehicle in a width direction perpendicular to a traveling direction of the vehicle; and a cylinder driving unit for driving a cylinder connected to the weight to move the weight in the width direction in the room.

Description

The weight balancing system of the bridge inspection vehicle and the bridge inspection vehicle equipped with it and the weight balancing method {WEIGHT BALANCING SYSTEM, AND BRIDGE INSPECTION VEHICLE USED IT, AND WEIGHT BALANCING METHOD}

The present invention relates to a weight balancing system of a bridge inspection vehicle, a bridge inspection vehicle equipped with the same, and a weight balancing method.More specifically, the vehicle overturns by balancing the weight of the structure on the vehicle body during work or driving so that the body load is not biased The present invention relates to a weight balancing system for a bridge inspection vehicle that can prevent safety accidents by improving vehicle body stability during work and driving, and a bridge inspection vehicle equipped with the same and a weight balancing method.

In general, various special vehicles are used at construction sites or building work sites. Such special vehicles include high place work cars, bridge work cars, elevated ladder cars, and elevated refraction trucks, and are used in a form that moves a worktable on which a person is boarded to a work position to perform various aerial work.

Recently, these special vehicles have been made to be mounted on mobile vehicles, and thus, there is a trend to secure maneuverability.

Among them, high-altitude work vehicles are vehicles used to raise or lower heavy loads on structures such as high-rise buildings. It is widely used for replacement work.

In order to improve the workability and stability of work, as well as to secure work stability and maneuverability, a boom that extends and contracts the length of the vehicle is installed. , It is being developed to be used in various ways according to the purpose of use, and is being used efficiently and widely in the current work site.

In addition, a bridge inspection vehicle is a special vehicle in which a hydraulic gondola or lifter is attached to the chassis of the vehicle and the inspector rides it to perform inspections of the lower part of the bridge, and a bridge inspection platform is provided at the end of the boom that is bent in multiple stages. It can be moved to the lower part of the bridge, so it is possible to quickly and conveniently perform the bridge inspection.

As such, an outrigger is essential to support the newly constructed boom or bridge inspection platform located outside the vehicle and to prevent overturning during work.

In other words, in order to secure the working stability of a special vehicle, outriggers whose length is extended in the lateral direction are installed at both ends of the frame of the vehicle body, and the outriggers support the load of the vehicle body by the operation of the outrigger during work, thereby overturning the vehicle body. It is possible to prevent and secure the stability of the work.

Such an outrigger is configured to include a horizontal operating platform that is inserted into the outrigger housing and is drawn out in a horizontal direction by a driving cylinder, and a leg that is coupled to the tip of the horizontal operating platform and configured to expand and contract in a vertical direction. These outriggers stably support the vehicle on the ground while the ladder boom, articulated boom, and the like are deployed from the vehicle body.

However, as special vehicles require a wider working radius, the expansion range of the boom is widened, and accidents often occur in which the vehicle is overturned by exceeding the support capacity of the outrigger when the boom is fully deployed. Furthermore, it is pointed out that there is a lot of danger in relying on the balance of the vehicle to proceed with the work by relying only on the outrigger because the outrigger's horizontal operating table withdrawal amount is often small depending on the complex field work situation.

The present invention has been conceived to solve the above problems, and its object is to prevent the vehicle from overturning by balancing the weight of the structure on the vehicle chassis during operation or driving so that the vehicle body load is not biased. It is to provide a weight balancing system for a bridge inspection vehicle that can prevent safety accidents by improving the vehicle body stability, and a bridge inspection vehicle equipped with the same and a weight balancing method.

According to the present invention, the present invention relates to a weight balancing system of a bridge inspection vehicle and a bridge inspection vehicle and a weight balancing method equipped with the same. The present invention relates to a weight balancing system of a bridge inspection vehicle that can prevent a safety accident by preventing overturning of the vehicle and improving vehicle body stability during work and driving, and a bridge inspection vehicle equipped with the same and a weight balancing method.

According to the present invention, it is possible to prevent the vehicle from overturning by adjusting the weight of the structure on the chassis during work or driving so that the vehicle body load is not biased, and to improve the vehicle body stability during work and driving, thereby preventing safety accidents. It works.

In addition, it has the effect of reducing the dependence on the vehicle balance on the outrigger so that the vehicle balance can be stably adjusted without being restricted by the amount of withdrawal of the outrigger according to the on-site situation.

In addition, since the movement of the heavy object to balance the weight is automatically controlled according to whether the vehicle is running, whether the outrigger is taken out, and the direction of the boom stand, it has the effect of preventing safety accidents caused by manual manipulation mistakes in advance.

1 is a perspective view for explaining an aerial vehicle to which the present invention is applied.
2 is a block diagram illustrating a weight balancing system applied to an aerial vehicle.
3 is a view for explaining a weight balancing system mounted on the chassis of the aerial vehicle.
4 is a diagram for explaining a process of moving a heavy object of a weight balancing system in an aerial vehicle.
5 is a perspective view for explaining a bridge inspection vehicle to which the present invention is applied.
6 is a block diagram illustrating a weight balancing system applied to a bridge inspection vehicle.
7 is a view for explaining a weight balancing system mounted on the chassis of the bridge inspection vehicle.
8 is a diagram for explaining a process of moving a heavy object of a weight balancing system in a bridge inspection vehicle.
9 is a view for explaining a heavy object according to an embodiment of the present invention.
10 is a flowchart illustrating a weight balancing method according to an embodiment of the present invention.

In the present invention, various modifications may be made and various embodiments may be provided, and specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. In describing each drawing, similar reference numerals have been used for similar elements.

Terms such as first, second, A, and B may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

Unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in the present application. Does not.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

A special vehicle according to an embodiment of the present invention can be moved through driving, such as an aerial work car, a bridge work car, an elevated ladder car, and an elevated articulated truck, and moves the work table on which a person or equipment is boarded to a work position to perform various aerial work. It means a vehicle.

1 is a perspective view for explaining an aerial vehicle to which the present invention is applied.

Referring to FIG. 1, in the case of an aerial vehicle among special vehicles, the aerial vehicle 200 is installed on the chassis 110 of the vehicle 100 to be moved and operated. Here, the chassis 110 is a luggage compartment provided at the rear of the vehicle 100, and wheels are mounted on the lower side, and the outrigger 120 is installed to be withdrawn on the side, and the aerial work device 200 is mounted on the upper surface. do.

The aerial work apparatus 200 according to the present invention is loaded on the vehicle 100 to be moved and operated. Here, as the onboard vehicle 100, a freely moving vehicle such as a truck may be used, and a special vehicle such as a crane may be used. The mounted vehicle 100 has a chassis 110 on which the aerial work device 200 can be mounted at the rear, and an outrigger 120 that supports the equipment vehicle when driving the aerial work device 200 is provided. I can.

The high place working device 200 is a pivot 210 installed on the chassis 110 to support the undulation, expansion, and rotation of the upper structure, and is coupled to the pivot 210 to handle vertical elevation to the working position. It may be configured to include a boom stand 220 and a worktable 230 rotatably coupled to the front end of the boom stand 220 to board the worker, and the operation of the aerial work device 200 on the chassis 110 An adjustable console 240 is provided.

Here, the turning table 210 is installed on a driving table in which a motor or the like is embedded on the chassis 110 so as to be able to rotate in the horizontal direction. In addition, a main boom cylinder for controlling the rotational operation of the boom stand 220 is coupled between the pivot 210 and the boom stand 220 by protruding and suctioning the piston rod according to hydraulic control. In addition, the boom stand 220 is configured by sequentially inserting a plurality of booms so that the length thereof can be adjusted. At this time, each boom constituting the boom stand 220 will be expandable and contracted with a chain that is connected to each other. In addition, the worktable 230 will be configured to include a base connected to the bottom of the worktable 230 and the tip of the boom 220 so as to be rotated while maintaining the level. In addition, the worktable 230 is a structure in which a worker and various tools for performing work are mounted, and may be configured in a so-called cage form in which a bar-shaped frame is combined in a grid form.

FIG. 2 is a block diagram for explaining a weight balancing system applied to an aerial vehicle, FIG. 3 is a view for explaining a weight balancing system mounted on a chassis of an aerial vehicle, and FIG. 4 is a weight balancing in an aerial vehicle It is a diagram for explaining the process of moving a heavy object of the system.

2 to 4, the weight balancing system 400 applied to an aerial vehicle is divided into a heavy object 420 and a space within the chassis 110 in a width direction perpendicular to the driving direction of the vehicle. A plurality of balance rooms 414 accommodating the heavy objects 420, and a cylinder driving unit 430 for driving a bidirectional cylinder 433 moving the heavy objects 420 in the left and right width directions in the balance room 414, and , A balance detection unit 440 that detects the position of the heavy object 420 within the balance room 414, a first operation detection unit 450 that detects whether the outrigger 120 of the vehicle is withdrawn, and the boom stand 220 The operation detection result of the second operation detection unit 460 for detecting the working direction of, the setting unit 470 for setting the working characteristic value of the vehicle, and the first operation detection unit 450 and the second operation detection unit 460 It may be configured to include an action output unit 480 for outputting an appropriate action to the vehicle and a balance control unit 490 for controlling each of the above components.

The heavy object 420 is formed to have a high weight and applies a load to the moved portion while moving within the chassis 110. A plurality of such heavy objects 420 may be accommodated in the chassis 110, and individual heavy objects 420 may be made of steel. Referring to FIG. 9, the heavy object 420 may include a sliding means 421 at the lower portion to enable smooth movement. The sliding means 421 can be manufactured by making an ultra high molecular weight polyethylene (UHMWPE) resin having excellent abrasion resistance, low deformation and high slip properties in the form of a pad, and attached to the lower portion of the heavy object 420 It is possible to make the movement of the heavy object 420 smoothly. In addition, the sliding means 421 can be made in the form of a roller or a ball in addition to the pad shape, so that the heavy object 420 can be easily slid, and if the heavy object 420 can be easily moved in the horizontal direction, the shape or material is limited. There is no.

The balance room 414 has a space in which the heavy object 420 can be accommodated and moved, and a plurality of the balance rooms 414 are installed in the chassis 110 along the driving direction of the vehicle. Each balance room 414 has an inner space formed in the width direction perpendicular to the driving direction of the vehicle as shown in FIG. 3, and the overall length of the inner space based on the width direction is greater than the length of the heavy object 420. It is made large. Each of these balance rooms 414 do not necessarily have to be adjacent to each other within the chassis 110, and are parallel to the portion of the chassis 110 without separate obstructions (outriggers, turntables, etc.) along the driving direction. It just needs to be arranged.

Referring to FIG. 4, the balance room 414 includes a bidirectional cylinder 433 that moves in the left and right width directions according to the supply of hydraulic pressure or pneumatic pressure, and a heavy object 420 is coupled to the bidirectional cylinder 433. Therefore, the heavy object 420 moves to the center position in the width direction (Fig. 4(a)), the left position in the width direction (Fig. 4(b)), and the right position in the width direction (Fig. 4(a)). Can be.

In the actual high place work vehicle, when driving, the aerial work device 200 on the chassis 110 is fixed to the center of the chassis 110 so that the load is applied to the center part based on the width direction of the chassis 110. The load may be applied from the center of the chassis 110 as well as on the left and right sides of the chassis 110 as well as the center of the chassis 110 by the unfolding and refraction directions of the boom base 220 and the movement of the work platform 230. The outrigger 120 is mounted on the chassis 110 to prevent the vehicle from overturning by the load of the high place work device 200, but recently a wider working radius is required for a special vehicle, and the expansion range of the boom 220 When the boom is widened and the maximum deployment of the boom unit 220 exceeds the support force of the outrigger 120, accidents in which the vehicle is overturned frequently occur. Furthermore, it is pointed out that there is a lot of danger in relying on the balance of the vehicle only to the outrigger 120 because the horizontal operating table withdrawal amount of the outrigger 120 is small frequently according to the complex field work situation.

In the present invention, in the driving state of the high place work vehicle, the weight 420 in the balance room 414 is automatically positioned at the center portion based on the width direction of the chassis 110 to increase the stability of the vehicle body while driving. In the working state, the weights 420 in the balance room 414 are moved in the opposite direction to the working direction of the boom 220 to balance the weights on the left and right based on the width direction of the chassis 110. This prevents the phenomenon of being biased in the working direction.

At this time, a balance detection unit 440 is installed in the balance room 414. As shown in FIG. 4, the balance detection unit 440 is installed at the left, center, and right positions of the balance room 414 to detect the current position of the heavy object 420. The balance detection unit 440 may be configured with various object detection sensors.

The first operation detection unit 450 detects whether the outrigger 120 is withdrawn from the vehicle. The first operation detection unit 450 can detect the current state of the outrigger by receiving the withdrawal and incoming signals from the outrigger withdrawal detection sensor installed in the outrigger 120.

The second operation detection unit 460 detects the working direction of the boom stand 220. The second operation detection unit 460 can detect the current working direction of the boom stand 220 by receiving a rotation angle signal from the rotation detection sensor of the driving table that rotates the turntable 210.

The setting unit 470 sets and stores the work characteristic values of the corresponding special vehicle. For example, in the case of a high place work vehicle, the boom stand 220 can move to either the left or the right side based on the width direction of the chassis 110, and accordingly, the load is biased toward the working direction of the boom stand 220 during work. Therefore, in the case of a high place work vehicle, the weight balancing system must be able to move three load positions in preparation for various working radii of the high place work device 200. In contrast, in the bridge inspection vehicle, since the boom is deployed in only one direction (left or right) based on the width direction of the undercarriage 110, the load during operation is also biased in only one direction. Therefore, in the case of a bridge inspection vehicle, the weight balancing system needs to be able to move only two load positions in relation to the one-way working radius of the bridge inspection device 500.

As such, the work characteristic values can be set differently according to the work characteristics of the special vehicle. For example, the work characteristic value is set as "two-way load movement" in the case of an aerial vehicle, and the work characteristic value is "one-way load movement" in the case of a bridge inspection vehicle. Value can be set.

The action output unit 490 includes information on the current position of the heavy object 420 obtained through the balance detection unit 440 according to an operator's work load balancing command or driving load balancing command, and the first operation detection unit 450 ) And information on the operation detection result of the second operation detection unit 460 are compared to perform outrigger control or movement control of a heavy object.

More specifically, the action output unit 490 may receive a work load balancing command from an operator. The work load balancing command is a command to automatically balance the load during work through the high place work device 200 to prevent overturning during work, and the movement of the heavy object is made to balance the work load. At this time, the movement of the heavy object can be performed only in the withdrawal state of the outrigger 120 for safety, and the action output unit 480 directly controls the withdrawal of the outrigger 120 or provides a notification to notify the operator that the withdrawal is performed. It can be turned on.

In addition, the action output unit 490 may receive a driving load balancing command from an operator. The driving load balancing command is a command to adjust the load balance to the center for the operation of the high place work vehicle and prevent the load from being overturned by being pushed to one side during driving.In order to bring the outrigger 120 into the vehicle, a heavy object The center movement is done first. That is, the movement of the heavy object must be performed in the state in which the outrigger is withdrawn for safety, and the action output unit 480 directly controls the inflow of the outrigger 120 or in the state in which the heavy object is first moved to the center. You can turn on a notification light to notify the operator. In addition, it is also possible to turn on a separate driving status light.

In addition, when balancing the work load, the second operation detection unit 460 checks the working radius of the boom unit that changes in real time, and accordingly, the load of the heavy object 420 is opposite to the working radius of the boom unit 220. The two-way cylinder 433 is driven through the cylinder driving unit 430 so that it can be applied to move the heavy object 420 to the opposite side of the working radius of the boom unit 220, thereby balancing the overall working load in the vehicle. In addition, when balancing the driving load, the boom rest 220 is folded and placed on the center of the chassis 110, and the two-way cylinder 433 is driven through the cylinder driving unit 430 to transfer the heavy object 420 to the chassis 110. By moving over the center of the vehicle, the overall driving load in the vehicle is centered.

5 is a perspective view for explaining a bridge inspection vehicle to which the present invention is applied.

Referring to FIG. 5, in the case of a bridge inspection vehicle among special vehicles, a bridge inspection device 500 is installed on the chassis 110 of the mounted vehicle 100 to be moved and operated. Here, the undercarriage 110 is a luggage compartment provided at the rear of the mounted vehicle 100, and wheels are mounted on the lower side and an outrigger 120 is installed to be withdrawn on the side, and the bridge inspection device 500 is mounted on the upper surface. do.

The bridge inspection device 500 according to the present invention will be loaded on the onboard vehicle 100 to be moved and operated. Here, as the onboard vehicle 100, a freely moving vehicle such as a truck may be used, and a special vehicle such as a crane may be used. The mounted vehicle 100 has a chassis 110 on which the bridge inspection device 500 can be mounted at the rear, and an outrigger 120 supporting the equipment vehicle when driving the bridge inspection device 500 is provided. I can.

The bridge inspection device 500 is in charge of extending the length to the working position by being coupled to the slewing table 510 installed on the chassis 110 to support the undulation, expansion, and rotation of the upper structure. A vertical boom 530 that is made of a boom stand 520 and a hollow member that can slide in a vertical direction to the end of the boom stand 520, and is coupled to the end of the vertical boom 530 in a horizontal direction. It may be configured to include an inspection borang 540 provided to inspect the lower part of the bridge through extension of the length of the bridge, and the chassis 110 includes a console 550 that can adjust the operation of the bridge inspection device 500 It is prepared.

Here, the turning table 510 is installed on a driving table in which a motor or the like is embedded on the chassis 110 so as to be able to rotate in a horizontal direction. And between the pivot 510 and the boom stand 520, a main boom cylinder for controlling the rotational motion of the boom stand 520 by protruding and sucking the piston rod according to hydraulic control is coupled. In addition, the boom stand 520 may be configured by sequentially inserting a plurality of booms so as to adjust the length thereof. At this time, each boom constituting the boom stand 520 will be expandable and contracted with a chain that is connected to each other. In addition, the inspection borang 540 is for inspecting each lower part of the bridge, and provides a moving path for the inspector. The inspector can safely inspect the bottom and lower parts of the bridge or perform maintenance work such as replacement of parts while walking along this moving passage.

At this time, in the bridge inspection vehicle, the boom 520, the vertical boom 530, and the inspection borang 540 are operated only on one side of the mounted vehicle 100 while the mounted vehicle 100 is located on the upper part of the bridge. In the weight balancing system 400, the high place work vehicle and the weight movement position in which the boom stand 220 can be maneuvered to both sides of the mounted vehicle 100 may be more simplified.

That is, in the high place work vehicle, it is necessary to move all three positions by adding the center position for the heavy object 420 in preparation for the driving state and the left and right positions for the various working radii of the high place work device 200, but in the bridge inspection vehicle, the heavy object By adding the center position for this driving state and the left or right position for the one-way working radius of the bridge inspection device 500, only two positional movements are required.

Figure 6 is a block diagram for explaining the weight balancing system applied to the bridge inspection vehicle, Figure 7 is a view for explaining the weight balancing system mounted on the chassis of the bridge inspection vehicle, Figure 8 is a weight of the weight balancing system in the bridge inspection vehicle It is a diagram for explaining the moving process.

6 to 8, the weight balancing system 400 applied to the bridge inspection vehicle comprises a heavy object 420 and a space within the chassis 110 in a width direction perpendicular to the driving direction of the vehicle. The center room 411 and the working room 412 are formed side by side in the width direction to accommodate the 420, and the center room 411 is formed side by side in the width direction, and the heavy object 420 is placed in the center room ( 411) and a cylinder room 413 in which a one-way cylinder 431 for moving in the working room 412 is built, a cylinder driving part 430 for driving the one-way cylinder 431, and the center room 411 And a balance detection unit 440 that detects the position of the heavy object 420 in the work room 412, a first operation detection unit 450 that detects whether the outrigger 120 of the vehicle is withdrawn, and a work characteristic value of the vehicle. The set setting unit 470, an action output unit 480 for outputting an appropriate action to the vehicle according to the operation detection result of the first operation detection unit 450, and a balance control unit 490 for controlling each of the components. It can be configured to include.

The heavy object 420 is formed to have a high weight and applies a load to the moved portion while moving within the chassis 110. A plurality of such heavy objects 420 may be accommodated in the chassis 110, and individual heavy objects 420 may be made of steel. Referring to FIG. 9, the heavy object 420 may include a sliding means 421 at the lower portion to enable smooth movement. The sliding means 421 can be manufactured by making an ultra high molecular weight polyethylene (UHMWPE) resin having excellent abrasion resistance, low deformation and high slip properties in the form of a pad, and attached to the lower portion of the heavy object 420 It is possible to make the movement of the heavy object 420 smoothly. In addition, the sliding means 421 can be made in the form of a roller or a ball in addition to the pad shape, so that the heavy object 420 can be easily slid, and if the heavy object 420 can be easily moved in the horizontal direction, the shape or material is limited. There is no.

Referring to FIG. 8, the cylinder room 413, the center room 411, and the working room 412 constituting a pair are formed in parallel in a width direction perpendicular to the driving direction of the vehicle, and the like. In addition, the cylinder room 413, the center room 411, and the work room 412 are formed in a pair, and a plurality of them are installed in the chassis 110 along the driving direction of the vehicle. The center room 411 and the work room 412 can accommodate the heavy object 420 therein, and the heavy object 420 in the one-way cylinder 431 of the cylinder room 413 adjacent to the center room 411 Is combined. Accordingly, the weight 420 moves the center room 411 and the work room 412 according to the driving of the one-way cylinder 431. The cylinder room 413, the center room 411, and the work room 412 forming a pair as described above do not necessarily need to be adjacent to each other within the chassis 110, and separate obstacles (outriggers, turning tables, etc.) ) It is only necessary to be arranged side by side along the driving direction on the portion of the chassis 110 that does not have a ).

8, the cylinder room 413 is provided with a one-way cylinder 431 that provides a straight forward force in the width direction according to the supply of hydraulic pressure or pneumatic pressure, and a heavy object 420 is coupled to the one-way cylinder 431. do. Accordingly, the heavy object 420 may be moved to a central position in the width direction (FIG. 8(a)) and a side position in the width direction (FIG. 8(b)).

When the actual bridge inspection vehicle is running, the bridge inspection device 500 on the chassis 110 is fixed to the center of the chassis 110 so that the load is applied to the center part based on the width direction of the chassis 110, but during operation The load may be applied to only one direction in which the boom stand 520, the vertical boom 530, and the inspection borang 540 are deployed. In order to prevent the vehicle from overturning by the load of the bridge inspection device 500, the outrigger 120 is mounted on the chassis 110, but recently a wider working radius is required for special vehicles, and in particular, the bridge inspection device 500 ) Because the body itself is large and the weight is very heavy, accident cases in which the vehicle is overturned by exceeding the support capacity of the outrigger 120 are frequently occurring. Furthermore, it is pointed out that there is a lot of danger in relying on the balance of the vehicle only to the outrigger 120 because the horizontal operating table withdrawal amount of the outrigger 120 is small frequently according to the complex field work situation.

In the present invention, in the driving state of the bridge inspection vehicle, the weights 420 in the vehicle chassis 110 are automatically positioned in the center room 411 to double the stability of the vehicle body during driving, and in the working state of the bridge inspection vehicle, the boom rod 520 and the vertical boom By moving the heavy object 420 to the work room 412 in the direction opposite to the direction in which the 530 and the inspection borang 540 are deployed, the weight balance of the left and right sides is adjusted based on the width direction of the chassis 110 It prevents the phenomenon that the load is biased in the working direction at (110).

At this time, a balance detection unit 440 is installed in the center room 411 and the work room 412. The balance detection unit 440 is installed in the center room 411 and the work room 412, respectively, as shown in FIG. 8 to detect the current position of the heavy object 420. The balance detection unit 440 may be configured with various object detection sensors.

The first operation detection unit 450 detects whether the outrigger 120 is withdrawn from the vehicle. The first operation detection unit 450 can detect the current state of the outrigger by receiving the withdrawal and incoming signals from the outrigger withdrawal detection sensor installed in the outrigger 120.

The setting unit 470 sets and stores the work characteristic values of the corresponding special vehicle. For example, in the case of a high place work vehicle, the boom stand 220 can move to either the left or the right side based on the width direction of the chassis 110, and accordingly, the load is biased toward the working direction of the boom stand 220 during work. Therefore, in the case of a high place work vehicle, the weight balancing system must be able to move three load positions in preparation for various working radii of the high place work device 200. In contrast, in the bridge inspection vehicle, since the boom is deployed in only one direction (left or right) based on the width direction of the undercarriage 110, the load during operation is also biased in only one direction. Therefore, in the case of a bridge inspection vehicle, the weight balancing system needs to be able to move only two load positions in relation to the one-way working radius of the bridge inspection device 500.

As such, the work characteristic values can be set differently according to the work characteristics of the special vehicle. For example, the work characteristic value is set as "two-way load movement" in the case of an aerial vehicle, and the work characteristic value is "one-way load movement" in the case of a bridge inspection vehicle. Value can be set.

The action output unit 490 includes information on the current position of the heavy object 420 obtained through the balance detection unit 440 according to an operator's work load balancing command or driving load balancing command, and the first operation detection unit 450 Perform outrigger control or movement control of heavy objects by comparing the information on the operation detection result of ).

More specifically, the action output unit 490 may receive a work load balancing command from an operator. The work load balancing command is a command to automatically balance the load during work through the bridge inspection device 500 to prevent overturning during work, and the movement of the heavy object is made to balance the work load. At this time, the movement of the heavy object can be performed only in the withdrawal state of the outrigger 120 for safety, and the action output unit 480 directly controls the withdrawal of the outrigger 120 or provides a notification to notify the operator that the withdrawal is performed. It can be turned on.

In addition, the action output unit 490 may receive a driving load balancing command from an operator. The driving load balancing command is a command to adjust the load balance to the center for the driving of the bridge inspection vehicle to prevent the load from being overturned by being pushed to one side during driving.The center of the heavy object to bring the outrigger 120 into the vehicle The movement comes first. That is, the movement of the heavy object must be performed in the state in which the outrigger is withdrawn for safety, and the action output unit 480 directly controls the inflow of the outrigger 120 or in the state in which the heavy object is first moved to the center. You can turn on a notification light to notify the operator. In addition, it is also possible to turn on a separate driving status light.

In addition, when balancing the working load, the working radius is fixed to one side, and accordingly, the one-way cylinder 431 is driven through the cylinder driving unit 430 so that the load of the heavy object 420 can be applied to the opposite side of the working radius. Thus, by moving the heavy object 420 to the work room 412 opposite the work radius, the overall work load in the vehicle is balanced. In addition, when balancing the driving load, the one-way cylinder 431 is driven through the cylinder driving unit 430 to move the heavy object 420 to the center room 411 above the center of the chassis 110, thereby driving overall driving in the vehicle. Let the load be centered.

Now with reference to FIG. 10 will be described in detail a weight balancing method according to an embodiment of the present invention that can be applied to a special vehicle such as an aerial vehicle or a bridge inspection vehicle.

10 is a flowchart illustrating a weight balancing method according to an embodiment of the present invention.

Referring to FIG. 10, first, the weight balancing system 400 installed in the onboard vehicle 100 will be driven (S10).

The weight balancing system 400 first checks the balance of the heavy object of the vehicle by receiving a detection signal for the current position of the heavy object 420 through the balance detection unit 440 (S12).

Thereafter, the weight balancing system 400 receives a balancing command for a work load that can be input from an operator (S14).

The balancing command for the work load is a command for the work to balance the overall load in preparation for this work when performing work by deploying the aerial work device 200 or the bridge inspection device 500 mounted on the vehicle.

At this time, the balancing command for the working load may be automatically input according to the operation of the aerial work device 200 or the bridge inspection device 500 without a separate operator input.

According to the work load balancing command, the weight balancing system 400 detects the state of the outrigger 120 through the first operation detection unit 450 (S16).

As a result of detection, the weight balancing system 400 determines whether the outrigger 120 is pulled out through the detection result of the first operation detection unit 450 and a jack is installed on the ground (S18), and the outrigger 120 If is not withdrawn, an outrigger withdrawal signal is transmitted to the console 240 so that the outrigger 120 is first installed on the ground (S20).

For safety reasons, the movement of the heavy object 420 to be made in the future is preferably performed only in the situation where the outrigger 120 is withdrawn and installed.In particular, this procedure is a problem even if the user of the existing equipment uses the equipment in the same way as the existing equipment. It is to ensure that there is no.

Thereafter, the weight balancing system 400 reviews the work characteristic value of the vehicle with reference to the setting unit 470 (S22).

In the setting unit 470, the work characteristic value can be set differently according to the work characteristic of the special vehicle. For example, the work characteristic value is set as "two-way load movement" in the case of an aerial vehicle, and "one-way load movement" in the case of a bridge inspection vehicle. The work characteristic value can be set with ".

If the work characteristic value is reviewed as "unidirectional load movement" as a result of the work characteristic value review through the setting unit 470, it will be recognized as a bridge inspection vehicle, and the weight balancing system 400 is through the cylinder drive unit 430 The one-way cylinder 431 is driven to move the heavy object 420 from the central center room 411 to the side work room 412 (S24).

In addition, when the work characteristic value is reviewed as "bidirectional load movement" as a result of the work characteristic value review through the setting unit 470, it will be recognized as a high place work vehicle, and the weight balancing system 400 first starts with a second operation detection unit ( Through 460, the current working direction of the boom unit 220 is detected (S26). Through this, the weight balancing system 400, which detects the working direction of the aerial work vehicle, drives the two-way cylinder 433 through the cylinder driving unit 430 to transfer the weight 420 in the balance room 414 to the current boom stand 220. It is moved to the opposite side to the working direction (S28).

At this time, the second operation detection step of the above-described second operation detection step and the weight movement step of the S28 step are continuously performed in parallel during the working time of the aerial work vehicle, so that the process of moving the heavy object 420 to the opposite side of the work reverberation is performed by the boom stand ( 220) will be linked to the work situation.

Thereafter, the weight balancing system 400 receives a balancing command for a running load that can be input from an operator (S30).

The balancing command for the driving load is a command for a task of matching the overall load balance for this driving when the vehicle moves while the aerial work device 200 or the bridge inspection device 500 is mounted on the vehicle.

At this time, the balancing command for the running load may be automatically input according to the unfolding of the aerial work device 200 or the bridge inspection device 500 without a separate operator input.

According to the driving load balancing command, the weight balancing system 400 checks the balance of the heavy object of the vehicle by receiving a detection signal for the current position of the heavy object 420 through the balance detection unit 440 (S32).

As a result of the check, the weight balancing system 400 determines whether the current position of the heavy object 420 is the center through the detection result of the balance detection unit 440 (S34), and the current position of the heavy object 420 is not the center. In this case, the heavy object 420 is moved to the center by driving the cylinder through the cylinder driving unit 430 (S36).

At this time, in the case of the high place work vehicle, the heavy object 420 will move to the central position within the balance room 414, and in the case of the bridge inspection vehicle, the heavy object 420 will move from the work room 412 to the center room 411. will be.

Thereafter, the weight balancing system 400 transmits an outrigger entry signal to the console 240 so that the outrigger 120 is withdrawn from the ground and introduced into the chassis 110 (S38).

As described above, an optimal embodiment has been disclosed in the drawings and specifications. Although specific terms have been used herein, these are only used for the purpose of describing the present invention, and are not used to limit the meaning or the scope of the present invention described in the claims. Therefore, those of ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

100: mounted vehicle 200: high place work device
400: weight balancing system 500: bridge inspection device

Claims (1)

As a weight balancing system installed in the bridge inspection vehicle,
lift;
A plurality of rooms for accommodating the heavy objects by dividing a space within the chassis of the special vehicle in a width direction perpendicular to the driving direction of the vehicle; And
A cylinder driving unit for moving the heavy object in the width direction in the room by driving a cylinder connected to the heavy object; Weight balancing system comprising a.

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