Remote control device for slinging and unslinging

Abstract

To provide a slinging / unslinging remote control device by which the slinging and unslinging can be easily performed by remote control without requiring an operator to enter a site even at a place where a person cannot approach easily such as a high place, a narrow place, and a high dose place.SOLUTION: A slinging / unslinging remote control device 10 includes a frame main body 20 connected to a wire hung down from a crane, an abutting part 30 extending downward from the frame main body and adsorbed to a top part of a hanging metal fitting 12 with a magnetic force, a receiving base 40 extending downward from the frame main body together with the abutting part and adsorbed to an opening surface of the hanging metal fitting with a magnetic force, a hook 50 openably / closably moved toward an opening 42 of the receiving base while interposing an opening 13 of the hanging metal fitting in the receiving base to perform slinging / unslinging, a camera 60 photographing the opening of the receiving base, a display unit 72 electrically connected to the hook and the camera through a wired or wireless radio communication line to display an image photographed by the camera, and a remote control unit 70 having a control unit 74 for operating the crane and controlling the opening / closing of the hook when the opening of the receiving base and the opening of the hanging metal fitting overlap with each other.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a remote slinging and removal device for remotely performing lifting and transportation work in places that are difficult for people to access, such as high places, narrow spaces, and places with high radiation levels. [Background technology]

[0002] Conventionally, there is a technology disclosed in Patent Document 1 as a slinging device used when lifting or lowering a structure during the installation work of the structure using a large crane. This device has a pin drive mechanism that slides a pin (hook) to engage or disengage from the sling. In the slinging work, the slinging worker guides the device above the sling, and while the crane operator lowers the wire, the slinger aligns and supports the sling so that it enters the recess of the device that engages or disengages the hook from the sling. However, depending on the work site, there are cases where the slinging work is performed in a place where people cannot easily approach, such as high up, narrow, or with high radiation, and application in such a place is extremely difficult. In addition, the pin is slid by the pin drive mechanism to engage or disengage the sling sandwiched between the plates, but it is difficult for the remote crane operator to check the insertion status of the pin, so some kind of checking means is required for safe work.

[0003] Furthermore, the sling removal device disclosed in Patent Document 2, which is used to remove a sling belt that has been wound around a tied long object, is equipped with a swing arm having a hook that swings (rotates) to hook and engage with the sling belt. The hook has a locking mechanism that prevents the sling belt from coming off. However, the swing arm itself does not have any locking mechanism, and there is a risk that the hook will open (release) due to a moment when a load is applied to the hook during lifting work, etc.

[0004] Figure 9 is an explanatory diagram of a sling attached to a structure. As shown in the figure, the sling 12 attached to the top of the structure is a plate member with a curved top and an opening 13 at a specified distance from the top, and is often attached at a specified height relative to the mounting surface and in a vertical position relative to the ground (see Figure 9(1)). However, depending on the structure, it is not necessarily in a vertical position. For example, in a semicircular structure, the sling 12 may be attached at an angle that is tangent to the curved surface in consideration of the load balance, or it may be attached with a hole in a position that is shifted above or below the specified height of the standard (see Figure 9(2)). In such cases, it is extremely difficult to align the hook that engages or disengages with the sling 12 by simply lowering the device. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 5546674 [Patent Document 2] Patent No. 6228740 Summary of the Invention [Problem to be solved by the invention]

[0006] In view of the problems of the conventional technology described above, the problem to be solved by the present invention is to provide a remote control device for removing a sling that can easily perform removal of a sling by remote control without the need for personnel to enter the site, even in places where personnel cannot easily approach, such as high places, narrow spaces, or places with high radiation levels. Another object of the present invention is to provide a remote control device for sling removal that can easily perform sling removal even when the sling is attached at an angle to a structure. [Means for solving the problem]

[0007] As a first means for solving the above problems, the present invention provides a frame body connected to a wire suspended from a crane, a butt portion extending downward from the frame body and magnetically attracted to a top of the hanging fitting; Extending downward from the frame body together with the abutment portion With opening The hanging hardware Top A support that is magnetically attached to the A hook that sandwiches an opening of the hoisting fitting between the receiving bases and moves toward the opening of the receiving base to sling or remove the hoisting fitting; A camera for photographing the opening of the receiving base; a display unit electrically connected to the hook and the camera via a wired or wireless communication line and displaying an image captured by the camera; and a remote control unit having a control unit that operates the crane and controls the opening and closing of the hook when the opening of the receiving base and the opening of the hanging metal fitting overlap; To provide a remote control device for slinging and removing a sling, comprising: According to the first means, the sling can be guided between the pedestal and the hook by the magnetic force of the pedestal and the butt, and the sling can be easily removed by remote control without people entering the site, even in places where people cannot easily approach, such as high places, narrow spaces, high radiation levels, etc. Also, the sling can be easily removed even if the sling is attached at an angle to the structure.

[0008] As a second means for solving the above-mentioned problems, the present invention provides a remote control sling and release device for a sling, which is characterized in that, in the first means, a fixing pin is provided for fixing the hook when the hook is inserted into the opening of the receiving base, and the control unit controls the advancement and retreat of the fixing pin when the hook is inserted into the opening of the receiving base. According to the second means, when a load is applied to the shaft of the hook that opens and closes (rotates), the hook does not open due to the moment. Therefore, the hook can be maintained in a slinging state, and the hook can be prevented from accidentally coming off the opening of the receiving base during the lifting operation.

[0009] As a third means for solving the above problems, the present invention provides a remote control device for slinging and removing a sling, characterized in that in the first or second means, the frame main body is electrically connected to the remote control unit by a wired or wireless communication line and is equipped with a load cell for measuring the load on the hook. According to the third means, it is possible to prevent an erroneous operation in which the hook is released without realizing that a load is applied to the hook.

[0010] As a fourth means for solving the above-mentioned problems, the present invention provides a remote control sling removal device according to any one of the first to third means, characterized in that the hook has a plurality of shafts of different diameters that can be inserted depending on the size of the opening of the hoisting hardware, and a hook body that detachably supports any one of the plurality of shafts. According to the fourth aspect, it is possible to accommodate different hole diameters of the hanging fitting depending on the load capacity.

[0011] As a fifth means for solving the above-mentioned problems, the present invention provides a remote control device for slinging and removing a sling, characterized in that, in any one of the first to fourth means, it is provided with a hook detection sensor that is electrically connected to the remote control unit by a wired or wireless communication line and detects a closed state in which the hook is inserted into the opening of the receiving base and an open state in which the hook is pulled out of the opening of the receiving base. According to the fifth means, the open / closed state of the hook can be reliably detected when visual confirmation of the image captured by the camera is insufficient, such as at night or in a dark place. In addition, the open / closed state of the hook can be easily confirmed even by remote control without the need for a person to enter the site.

[0012] As a sixth means for solving the above-mentioned problems, the present invention provides a remote control device for slinging and removing a sling, characterized in that, in the second means and any one of the third to fifth means dependent on the second means, the device is electrically connected to the remote control unit by a wired or wireless communication line and is equipped with a fixing pin detection sensor that detects a fixed state in which the fixing pin fixes the hook and an open state in which the fixing pin does not fix the hook. According to the sixth aspect, the locked or unlocked state of the fixing pin can be detected reliably. Also, the open / closed state of the fixing pin can be easily confirmed even by remote control without the need for personnel to enter the site. Effect of the Invention

[0013] According to the present invention, the sling can be guided between the receiving base and the hook by the magnetic force of the receiving base and the stopper, and the sling can be easily removed by remote control without anyone having to enter the site, even in places that are difficult for people to approach, such as high places, narrow spaces, or places with high radiation levels. In addition, even if the lifting fixture is attached at an angle to the structure, the lifting and detaching can be done easily. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view of a remote control device for slinging and releasing of the present invention. [Diagram 2] FIG. 2 is an explanatory diagram of the state in which the hook of the remote control device for slinging and releasing of the present invention is open. [Diagram 3] FIG. 2 is an explanatory diagram of the state in which the hook of the remote control device for slinging and releasing of the present invention is closed. [Figure 4] FIG. 2 is a block diagram of the remote slinging and releasing device of the present invention. [Diagram 5] FIG. 1 is a process flow diagram of slinging using the slinging and slinging release remote control device of the present invention. [Figure 6] FIG. 1 is a process flow diagram for removing slings using the remote control device for removing slings of the present invention. [Figure 7] FIG. 2 is a process diagram of the remote control device for slinging and removing the sling of the present invention. [Figure 8] FIG. 2 is a process diagram of the remote control device for slinging and removing the sling of the present invention. [Figure 9] FIG. 1 is an explanatory diagram of a hanging fitting attached to a structure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a remote slinging and releasing device according to the present invention will be described in detail below with reference to the drawings. The hanging hardware to be attached in the present invention is an inverted U-shaped metal or forged hanging hardware that is often attached so as to protrude upward from the top surface of a structure. In this case, in addition to the hanging hardware attached vertically at a specified height, the hanging hardware may be attached at an angle or with a hole in a position above or below the specified height as specified by the standard.

[0016] [Remote control device for slinging and unslinging 10] FIG. 1 is a perspective view of the remote sling release device of the present invention. FIG. 2 is an explanatory diagram of the remote sling release device of the present invention with the hook open. FIG. 3 is an explanatory diagram of the remote sling release device of the present invention with the hook closed. FIG. 4 is a block diagram of the remote sling release device of the present invention. The remote sling release device 10 of this embodiment is made up of two components: a frame body 20 (see FIGS. 1-3) that is connected to a wire suspended from a crane at a work site, and a remote control unit 70 (see FIG. 4) that is located away from the work site. The frame body 20 and the remote control unit 70 are electrically connected via a wired or wireless communication line.

[0017] The remote sling and release device 10 of the present invention comprises a frame body 20 connected to a wire suspended from a crane, abutment portion 30 extending downward from the underside of the frame body 20 and magnetically attracted to the top of the sling fitting 12, a receiving base 40 extending downward from the underside of the frame body 20 together with the butt portion 30 and magnetically attracted to the opening surface of the sling fitting 12, and a receiving base 40 facing an opening 42 of the sling fitting 12 with the opening 13 of the sling fitting 12 sandwiched between the receiving base 40 and the receiving base 40. the hook 50 which moves open and closed to load or unload a lifting bracket 12, a camera 60 which takes an image of the opening 42 of the receiving base 40, a display unit 72 which is electrically connected to the hook 50 and the camera 60 via a wired or wireless communication line and displays the image captured by the camera 60, and a remote control unit 70 (see FIG. 4) which operates the crane and has a control unit 74 which controls the opening and closing of the hook 50 when the opening 42 of the receiving base 40 and the opening 13 of the lifting bracket 12 overlap.

[0018] (Frame body 20) The frame body 20 has a box-shaped frame shape, and has attached to its upper surface a hoisting hook 22 to which a wire suspended from a crane is connected. The hoisting hook 22 is attached to the upper surface of the frame body 20 so that it can freely rotate around its vertically arranged axis. A load cell 24 is attached to the fixed part of the frame body 20 and the hoisting hook 22. The load cell 24 can measure the weight of the structure to be hoisted by the frame body 20, and is set in advance to exclude the weight of the frame body. This makes it possible to measure the weight of the structure to be hoisted. The frame body 20 is equipped with a communication unit with the remote control unit 70, which will be described later.

[0019] (Abutment part 30) The abutment section 30 is composed of a concave member 32 that extends downward from the frame body 20 and contacts the top of the hanging hardware 12, a support rod that is vertically arranged between the concave member 32 and the frame body 20, and a slide mechanism 34 that has a spring that expands and contracts by wrapping around the outer periphery of the support rod. A magnet is arranged on the surface of the concave member 32 that contacts the top of the hanging hardware 12. The slide mechanism 34 supports the concave member 32 in an expanded state by the spring, and the spring force is adjusted so that when the frame body 20 is lowered, it is pushed by the hanging hardware 12 and contracts upward. The magnetic force of the concave member 32 is adjusted so that the hanging hardware 12 comes off the concave member 32 when the frame body 20 is pulled with more than a certain force.

[0020] (Pedestal 40) The receiving base 40, like the abutment member 30, is a member that extends downward from the frame main body 20 and comes into contact with the opening surface of the hanging hardware 12. The receiving base 40 and the abutment member 30 are attached side by side. The receiving base 40 has an opening 42 into which the shaft of a hook 50, which will be described later, fits. A magnet is disposed on the main surface of the receiving base 40 that comes into contact with the opening surface of the hanging hardware 12. The magnetic force of the receiving base 40 is adjusted so that the hanging hardware 12 will come off from the main surface of the receiving base 40 when the frame main body 20 is pulled with more than a certain force.

[0021] (Hook 50) The hook 50 has a shaft 52 that fits into the opening 42 of the receiving base 40, a hook body 54 that detachably supports the shaft 52, and an actuator 56 that drives (rotates) the hook body 54. The shaft 52 is formed into a bolt shape and is attached by screwing into a hole in the hook body 54. The diameter of the tip side of the shaft 52 that screws into and penetrates the hook body 54 can be changed as desired. More specifically, shafts 52 with multiple diameters for the tip side that fits into the opening 42 of the hanging hardware 12 are prepared in advance, each with a different diameter depending on the size of the opening 42. This allows the shaft diameter to be changed as desired to match the opening of the hanging hardware, and can be appropriately adapted to the load (stress) on the frame body.

[0022] The hook 50 of this embodiment has a rotating shaft attached above the receiving base 40, and moves to open and close so that the axis of the shaft 52 rotates from the vertical direction to the horizontal direction and fits into the opening 42 of the receiving base 40. Note that the opening and closing movement of the hook 50 is not limited to this, and it may be configured to move forward and backward in the horizontal direction. A fixed pin 80 is attached to the hook 50 to maintain the state in which the shaft 52 is fitted in the opening 42 of the receiving base 40 (see Figs. 2 and 3). In this embodiment, the hook 50 is configured with a pin hole 58 extending in a direction intersecting the rotation axis of the hook 50, and the fixed pin 80 that fits into the pin hole 58 at the position where the shaft 52 is fitted into the opening 42 of the receiving base 40. The fixed pin 80 is equipped with an actuator 82, which moves it toward and away from the pin hole 58.

[0023] (Camera 60) The camera 60 is attached to the frame body 20 and the hook 50 so as to capture an image of the opening 42 of the receiving stand 40. More specifically, the camera 60 is attached so as to capture an image of the state in which the opening 13 of the hanging metal fitting 12 is guided and aligned with the opening 42 of the receiving stand 40 by the receiving stand 40 and the abutment portion 30.

[0024] (Hook detection sensor 90) The hook detection sensor 90 is a sensor that detects a closed state (see FIG. 3) in which the shaft 52 of the hook 50 is fitted into the opening of the receiving base 40, and an open state (see FIG. 2) in which the hook is not fitted. A specific configuration of the hook detection sensor 90 is made up of a detection sensor that detects the hook body 54 when the hook 50 is in the open state, and a detection sensor that detects the shaft 52 within the opening 42 of the receiving base 40 when the hook 50 is in the closed state.

[0025] (Fixed pin detection sensor 92) The fixed pin detection sensor 92 is a sensor that detects a state in which the fixed pin 80 is inserted into the pin hole 58 (see FIG. 3) and a state in which the fixed pin 80 is removed from the pin hole 58 (see FIG. 2). Specifically, the fixed pin detection sensor 92 is configured as a sensor that detects a fixed state in which the fixed pin 80 is extended and inserted into the pin hole 58, and detects an open state in which the fixed pin 80 is contracted and removed from the pin hole 58.

[0026] (Remote control unit 70) The remote control unit 70 is configured by a general-purpose computer having an information processing device and a storage device, and performs various processes in the information processing device using programs and data stored in the storage device. The remote control unit 70 of this embodiment is configured to include a display unit 72, a control unit 74, and an operation input unit 76. The remote control unit 70 is electrically connected to the load cell 24 of the frame body 20, the camera 60, the actuator 56 of the hook 50, the actuator 82 of the fixing pin 80, the hook detection sensor 90, and the fixing pin detection sensor 92 via communication lines.

[0027] The display unit 72 is a monitor that displays images captured by the camera 60 and a control operation screen by the control unit and the operation input unit. The control unit 74 operates the crane and controls the opening and closing of the hook 50 when the opening 42 of the receiving base 40 and the opening 13 of the sling 12 overlap, thereby performing the slinging or unslinging work. Specifically, the control unit 74 executes the process flows in Figs. 5 and 6 described later. The operation input unit 76 is a keyboard, touch panel, or the like for inputting operation commands for executing various programs and remotely operating the crane and the frame body 20.

[0028] [Effect] The remote sling removal operation using the remote sling removal operation device of the present invention will be described below. Figure 5 is a process flow diagram of slinging using the remote sling removal operation device of the present invention. Figure 6 is a process flow diagram of removal using the remote sling removal operation device of the present invention. Figure 7 is a process diagram of the remote sling removal operation device of the present invention. Figure 8 is a process diagram of the remote sling removal operation device of the present invention.

[0029] (Sling) Step 1 The frame body 20 is moved to the vicinity (above) of the hanging fittings 12 of the structure by operating the crane (see FIG. 7). Step 2 As the crane lowers, the magnet of the receiving base 40 is attracted to the opening face of the hanging fitting 12, and the magnet of the abutment portion 30 is attracted to the top of the hanging fitting 12. The lowering operation is temporarily stopped, and the opening position of the hanging fitting 12 is confirmed using an image captured by the camera 60 (see FIG. 7).

[0030] Step 3 After checking step 2, the crane is lowered again, and in conjunction with the lowering operation, the slide mechanism 34 contracts with the concave member 32 of the abutment portion 30 attached to the top of the hanging hardware 12, causing the opening surface of the hanging hardware 12, which is attached to the magnet of the receiving base 40, to also slide upward. At this time, the magnet of the receiving base 40 is adjusted to a magnetic force that allows the frame body 20 to slide easily when pulled with a certain force or more, so it can slide while attached to the main surface of the receiving base 40. The receiving base 40 is moved until the opening 42 of the receiving base 40 and the opening 13 of the hanging hardware 12 are positioned concentrically in the image captured by the camera 60 (see FIG. 7). Furthermore, even if the hanging bracket 12 is installed at an angle or with a hole in a position that is offset above or below the specified height as specified by the standard, it can be attracted by the magnetic force of the receiving base 40 and the abutment portion 30, and the hanging bracket can be slid by the appropriate magnetic force to guide it to the main surface of the receiving base, making it easy to align the opening 42 of the receiving base 40 with the opening 13 of the hanging bracket 12.

[0031] Step 4 The hook 50 is closed. The actuator 56 of the hook 50 is driven by the control unit 74 of the remote control unit 70 to insert the shaft 52 into the opening 42 of the receiving base 40 (see FIG. 7). Step 5 When the shaft 52 is inserted into the opening 42 of the receiving base 40, the hook detection sensor 90 detects the closed state of the hook 50 (see FIG. 8).

[0032] Step 6 After confirmation of step 5, the fixing pin 80 is fixed by driving the actuator 82 of the fixing pin 80 by the control unit 74 of the remote control unit 70, and the fixing pin 80 is inserted into the pin hole 58 of the hook 50 and fixed (see FIG. 8). Step 7 When the fixing pin 80 is inserted into the pin hole 58, the fixing state of the fixing pin 80 is detected by the fixing pin detection sensor 92 (see FIG. 8). This completes the slinging operation of the hoisting fitting.

[0033] (Ball removal) Step 11 The fixing pin 80 is opened. The actuator 82 of the fixing pin 80 is driven by the control unit 74 of the remote control unit 70 to pull the fixing pin 80 out of the pin hole 58 of the hook 50. Step 12 When the fixing pin 80 is pulled out of the pin hole 58, the fixing pin detection sensor 92 detects that the fixing pin 80 is in an open state.

[0034] Step 13 The load cell 24 is used to check that the weight of the structure, i.e., that no load is being applied to the hook. If no weight is detected, the structure is stably placed on the ground. On the other hand, if weight is detected, the structure is unstable, such as being partially floating, so the structure is reset using a crane. Step 14 The hook 50 is opened. The actuator 56 of the hook 50 is driven by the control unit 74 of the remote control unit 70 to pull out the shaft 52 from the opening 42 of the receiving base 40.

[0035] Step 15 When the shaft 52 is pulled out from the opening 42 of the receiving base 40, the hook detection sensor 90 detects that the hook 50 is in the open state. Step 16 The hoisting operation of the crane releases the magnetic attraction between the receiving base 40 and the abutting member 30 and the hoisting fitting 12. This completes the ball removal operation of the hoisting fitting.

[0036] According to the present invention, the sling can be guided between the receiving base and the hook by the magnetic force of the receiving base and the stopper portion, and the sling can be easily removed by remote control without anyone having to enter the site, even in places that are difficult for people to access, such as high places, narrow spaces, or places with high radiation levels. In addition, even if the lifting fixture is attached at an angle to the structure, the lifting and detaching can be done easily. Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and various modifications can be made without departing from the spirit and scope of the present invention. Furthermore, the present invention is not limited to the combinations shown in the embodiments, but can be implemented in various combinations. [Explanation of symbols]

[0037] 10. Remote control device for slinging and unslinging 12 Hanging hardware 13 Aperture 20 Frame body 22 Hanging hook 24 Load Cell 30 Stopping part 32 Concave member 34 Slide mechanism 40 Receiving stand 42 Aperture 50 Hook 52 Shaft 54 Hook body 56 Actuator 58 Pin Hole 60 Cameras 70 Remote control unit 72 Display section 74 Control Unit 76 Operation input section 80 Fixing pin 82 Actuator 90 Hook detection sensor 92 Fixed pin detection sensor

Claims

1. A frame body connected to a wire lowered from a crane; a butt portion extending downward from the frame body and magnetically attracted to a top of the hanging fitting; a receiving base that is magnetically attracted to an upper portion of the hanging fitting that extends downward from the frame body together with the abutment portion and has an opening; A hook that sandwiches an opening of the hoisting fitting between the receiving bases and moves toward the opening of the receiving base to sling or remove the hoisting fitting; A camera for photographing the opening of the receiving base; a display unit electrically connected to the hook and the camera via a wired or wireless communication line and displaying an image captured by the camera; and a remote control unit having a control unit that operates the crane and controls the opening and closing of the hook when the opening of the receiving base and the opening of the hanging metal fitting overlap; A remote control device for slinging and removing a sling, comprising:

2. The remote sling release device according to claim 1, A remote control device for slinging and removing a sling is provided with a fixing pin for fixing the hook when the hook is inserted into the opening of the receiving base, and the control unit controls the advance and retreat of the fixing pin when the hook is inserted into the opening of the receiving base.

3. The remote control device for slinging and removing a sling according to claim 1 or 2, The frame body is electrically connected to the remote control unit via a wired or wireless communication line and is equipped with a load cell that measures the load on the hook.

4. A remote control device for slinging and unslinging a sling as claimed in any one of claims 1 to 3, The hook is characterized in that it has a plurality of shafts of different diameters that can be inserted depending on the size of the opening of the sling, and a hook body that detachably supports any one of the plurality of shafts.

5. A remote control device for slinging and releasing a sling as claimed in any one of claims 1 to 4, A remote control device for slinging and removing a sling, characterized in that it is equipped with a hook detection sensor that is electrically connected to the remote control unit via a wired or wireless communication line and detects a closed state in which the hook is inserted into the opening of the receiving base and an open state in which the hook is pulled out of the opening of the receiving base.

6. A remote control device for slinging and releasing a sling according to claim 2 or any one of claims 3 to 5 depending on claim 2, A remote control device for slinging and removing a sling, characterized in that it is electrically connected to the remote control unit via a wired or wireless communication line and is equipped with a fixing pin detection sensor that detects a fixed state in which the fixing pin fixes the hook and an open state in which the fixing pin does not fix the hook.

Images