JP6997999B1 - Hook and suspended load monitoring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the durability of a camera 14 and a transmitting unit 15, to drive the camera 14 and the transmitting unit 15 for a long time, and at the same time to easily maintain a hook and a suspended load of the camera 14 and the transmitting unit 15. To provide the monitoring device 1. SOLUTION: A housing 10 attached to a telescopic jib tip 3a of a crane car 2, a camera 14 for photographing the tip of a hook 4 and a suspended load B inside the housing 10, and a camera 14 inside the housing 10. On the transmission unit 15 that wirelessly transmits the acquired video signal, the reception unit 12 that receives the video signal transmitted by the transmission unit 15, the monitor 13 that displays the video signal received by the reception unit 12, and the jib tip 3a. It is characterized by having a power supply unit 11 that is detachably attached by magnetic force and supplies power to the camera 14 and the transmission unit 15 inside the housing 10. [Selection diagram] Fig. 3

Description

The present invention is attached to the tip of a telescopic jib of a mobile crane, is easy to maintain, and a camera surrounded by a housing captures hooks and suspended loads, and a video signal is transmitted wirelessly and displayed on a monitor. It relates to a device for monitoring hooks and suspended loads.

Normally, when working on a crane, the crane operator often cannot check the surrounding environment of the hook suspended from the tip of the jib from the cockpit, and the hook is suspended using a transceiver or the like. The crane is operated according to the instructions of the slinger who performs the work.

However, when the crane is operated only by the voice instruction of the hanging load worker, if a mistake occurs in the cooperation, a crane accident such as the slinger coming into contact with the hook or the suspended load has occurred.

Therefore, in Patent Document 1, the image taken by the suspended load monitoring camera attached to the tip of the jib of the crane is monitored by the driver's seat so that the operator can visually confirm the tip of the hook from the driver's seat as well as by voice. The suspended load monitoring camera device to be displayed in is disclosed.

Japanese Unexamined Patent Publication No. 2013-1402037

However, since the suspended load monitoring camera device described in Patent Document 1 is installed so as to be exposed at the tip of the jib, it has poor durability against rain and wind. Further, since the power supply unit of the camera and the transmission / reception unit does not exist separately, the drive time of the camera and the transmission / reception unit is short.

Therefore, in view of the above circumstances, the present invention can improve the durability of the camera and the transmitting unit, drive the camera and the transmitting unit for a long time, and at the same time facilitate maintenance of the camera and the transmitting unit. It provides a hook and a suspended load monitoring device that can be used.

A housing that is attached to the tip of a retractable jib of a crane and has an open bottom, a camera that captures the tip of a hook and a suspended load inside the housing, and a video signal acquired by the camera inside the housing wirelessly. A transmitting unit for transmitting, a receiving unit for receiving the video signal transmitted by the transmitting unit, a monitor for displaying the video signal received by the receiving unit, and a detachably attached to the tip of the jib by magnetic force. The housing has a power supply unit for supplying power to the camera and the transmission unit inside the housing, and the housing is a box-shaped body having a side plate and a top plate surrounding the periphery and having an opening at the bottom. Inside the housing, a camera fixing plate for fixing the camera in the opening direction, a transmitting portion fixing plate for fixing the transmitting portion, and a rail guide in the opening direction with respect to the side plate are used. It slides and has a slide plate to which the camera fixing plate and the transmission unit fixing plate are attached.

The side plate has a mounting part for mounting the housing on the tip side of the jib, a maintenance fixing part that keeps the slide plate housed inside the housing, and a lower blocking part that prevents the slide plate from falling in the opening direction. , It is characterized by having.

The top plate includes a wiring hole for passing wiring from the power supply unit to the inside of the housing, and an upper blocking portion provided at a joint with the rail guide to block the slide plate. It is characterized in that a wiring gap obtained by an upper blocking portion is provided between the slide plate and the slide plate.

The first side plate provided with the mounting portion and the second side plate having the rail guide and provided in parallel with the slide plate are connected at a right angle, and the camera fixing plate and the transmitting portion fixing plate are slide plates. The camera fixing plate is provided on the tip end side of the jib, and the transmission unit fixing plate is provided on the opposite side to the tip end side of the jib.

The power supply unit is connected to a regulator provided inside the housing, adjusts the voltage to supply power to the camera and the transmission unit, and the regulator is the voltage or power supply supplied from the power supply unit. The side plate is provided with a window portion for displaying the remaining battery level of the unit and confirming the displayed voltage or the remaining battery level from the outside of the housing.

The housing is provided with a mounting bracket on the mounting portion and a clamp provided on the mounting bracket, and the overwinding limit device provided at the tip of the jib has a support plate fixed by an eyebolt on the overwinding limit device. A bearing provided on the support plate, a bracket provided swingably with respect to the center of the bearing, and a tubular body provided on the bracket so as to swing in a direction orthogonal to the swing direction of the bracket. And, the tubular body is characterized in that it is detachably fixed to a clamp.

It is characterized by having a safety rope that connects an eyebolt and a mounting bracket.

The tubular body is characterized by having a string portion for preventing overswing connected to a weight sensing rope connected to the overwinding limit device.

Since the tip of the jib is equipped with a camera for monitoring the hook and the suspended load and a transmitting unit for transmitting the video signal of the camera, the tip of the hook and the suspended load are photographed by the camera and the transmitting unit transmits the video signal to the receiving unit. By doing so, the environment around the hook can be visually monitored by a video on the monitor connected to the receiving unit. Further, since the camera and the transmission unit are surrounded by the housing, they can have strong durability. Then, by providing a power supply unit outside the housing separately from the battery built in the camera, the camera and the transmission unit can be driven for a long time. Since the power supply unit is detachably attached to the tip of the jib with a magnet, even when the power supply unit is replaced due to a dead battery, it is not necessary to remove the housing each time, so that the power supply unit can be easily replaced.

Since the side plate surrounds the housing and the lower part of the top plate is open, the temperature and humidity inside the housing are the same as those of the outside air, so that the camera does not fog. In addition, the camera fixing plate that fixes the camera inside the housing, the transmitting part fixing plate that fixes the transmitting part, and the camera fixing plate and the transmitting part fixing plate that slide in the opening direction with respect to the side plate by the rail guide. Since it has a attached slide plate, by sliding the slide plate in the opening direction, the camera and transmitter attached to the camera fixing plate and transmitter fixing plate can be easily taken out from the inside of the housing for maintenance. It can be carried out.

Since the slide plate can be restricted in movement by a maintenance fixing portion that keeps the slide plate housed inside the housing and a lower blocking portion that prevents the slide plate from falling in the opening direction, it is possible to position the slide plate inside the housing. can.

By having an upper blocking portion that is provided at the joint between the top plate and the rail and blocks the slide plate, a wiring gap is created between the top plate and the slide plate, and the slide plate does not buffer the wiring. Can be done.

The first side plate has a mounting portion to be attached to the tip of the jib, the second side plate has a rail guide and is provided in parallel with the slide plate, and the first side plate and the second side plate are at right angles to each other. Being connected, the second side plate always faces perpendicular to the tip of the jib. In the slide plate, the camera fixing plate and the transmitting portion fixing plate are provided side by side, the camera fixing plate is provided on the jib tip side, and the transmitting portion fixing plate is provided on the opposite side to the jib tip side. , The transmitter always faces the opposite side of the jib tip, and can smoothly transmit video signals regardless of where it is installed at the jib tip and without the radio waves and antennas buffering the jib tip. ..

The power supply unit is connected to a regulator provided inside the housing, and displays the voltage supplied from the power supply unit or the remaining battery level of the power supply unit, and the side plate displays the displayed voltage or remaining battery level. Since the window portion for checking from the outside of the housing is provided, it is possible to easily know the charging timing of the power supply unit.

The housing is provided with a mounting bracket on the mounting portion and a clamp provided on the mounting bracket, and the overwinding limit device provided at the tip of the jib has a support plate fixed by an eyebolt on the overwinding limit device. A bearing provided on the support plate, a bracket provided so as to be swingable with respect to the center of the bearing, and a cylinder provided so as to be swingable with respect to the bracket. Since it is fixed by a clamp, the camera always faces the tip of the hook even if the jib moves up, down, left and right.

By having a safety rope that connects the eyebolt and the mounting bracket, it is possible to prevent the housing from falling.

The tubular body is connected to a weight sensing rope connected to the overwinding limit device, and by having a string portion, it is possible to prevent the housing from overswing.

It is a schematic side view of the crane car which has a telescopic jib. It is a schematic perspective view which shows the jib tip of the crane car of FIG. It is a schematic perspective view which shows the crane vehicle equipped with the hook and the suspended load monitoring device which concerns on this invention. It is a schematic diagram which shows the cockpit of FIG. It is a schematic diagram which shows the state of confirming the image taken by a camera with a terminal in an office. It is the schematic sectional drawing of the housing attached to the tip of a jib. It is a schematic cross-sectional perspective view which shows the state which the slide plate is housed in a housing. It is a schematic cross-sectional perspective view which shows the state which a part of the slide plate protrudes out of a housing. It is a schematic side sectional view which shows the state seen from the direction A of FIG. 7. It is a schematic side sectional view which shows the state seen from the B direction of FIG. It is a schematic bottom view which shows the state seen from the C direction of FIG. 7. It is an assembly exploded view of a slide plate, a camera fixing plate, and a transmission part fixing plate. It is a wiring diagram of the hook and the suspended load monitoring apparatus power supply which concerns on this invention. It is a schematic side view which shows the mounting structure which connects a housing from the tip of a jib. It is a schematic front view of FIG.

Hereinafter, the hook of the mobile crane 2 and the suspended load monitoring device 1 according to the present invention will be described with reference to the drawings.

[About mobile crane 2]
The hook and suspended load monitoring device 1 are mainly used for the mobile crane 2 in which the jib 3 can be expanded and contracted as shown in FIG. Generally, a mobile crane has two hooks, a parent hook and a child hook, and the child hook is often used from the viewpoint of work efficiency. In the drawings, the parent hook is omitted for brevity. Further, as shown in FIG. 2, the jib tip 3a is provided with an overwinding limit device 5 for preventing the hook 4 from being overwound in any mobile crane 2. A lifting rope 8 connected to the hook 4 passes through the central hole 7 of the weight 6 of the overwinding limit device 5, and the weight 6 is connected to the overwinding limit device 5 by a plurality of weight sensing ropes 9. When the hook 4 is wound up to the vicinity of the weight 6, since the hook 4 does not pass through the center hole 7, the weight 6 is lifted by the hook 4, the tension of the weight sensing rope 9 becomes small, and the overwinding limit device 5 operates to wind the hook 4. Work is automatically stopped and has the role of preventing accidents. The overwinding limit device 5 is required by law to be used for all mobile cranes.

[Crane hook and suspended load monitoring device 1]
The hook and suspended load monitoring device 1 includes a housing 10, a power supply unit 11, a receiving unit 12, and a monitor 13. The housing 10 has a camera 14 and a transmission unit 15 inside, and as shown in FIG. 3, the housing 10 is attached to a jib tip 3a. The camera 14 inside the housing 10 is installed so as to always face downward, and the camera 14 photographs the hook 4 and the suspended load B. The transmitting unit 15 transmits the video signal captured by the camera 14 to the receiving unit 12, and the video signal received by the receiving unit 12 is displayed on the monitor 13. Since the power supply unit 11 is attached by magnetic force at the jib tip 3a outside the housing 10, when replacing the power supply unit 11, there is no need to disassemble the housing 10 or remove the housing 10 from the jib tip 3a. Can be easily replaced.

As shown in FIG. 4, by installing the receiving unit 12 and the monitor 13 in the control room C of the crane vehicle 2, the operator of the crane vehicle 2 can perform the lifting work with the crane vehicle 2 as shown in FIG. Even if there is a high wall W between the places where the crane is to be performed and the slinger T who hangs and removes the suspended load B from the control room C of the crane vehicle 2 cannot be visually recognized, the maneuvering is performed. The person can check the state of the hook 4, the suspended load B, the slinger T, etc. on the monitor 13, and can prevent an unexpected accident for the slinger T, so that the operation of the crane vehicle 2 is safe. It can enhance the sex. At the same time, the work efficiency of the mobile crane 2 can be improved by visually observing the surrounding environment of the hook 4, the suspended load B, and the state of the slinger T.

As shown in FIG. 5, a terminal 16 having a built-in receiving unit 12 may be used. For example, if the terminal 16 is in an office near a construction site, an image of crane work can be confirmed in the office. can. As described above, there may be a plurality of receiving units 12 and monitors 13 as long as the video signal transmitted by the transmitting unit 15 can reach. Further, the terminal 16 may have a recording function, and it is possible to easily prove the responsibility of the accident by checking the recorded video when the accident occurs.

Further, the hook and the suspended load monitoring device 1 not only enhance the safety of the operation of the crane vehicle 2, but also use the recorded video for education of the operation of the crane vehicle 2 by showing it to a beginner of the crane operation. You can also do it.

[About housing 10]
As shown in FIG. 6, the housing 10 is a box-shaped body having a side plate 17 surrounding the periphery and a top plate 18 and having an opening at the bottom. The inside of the housing 10 includes a camera 14, a transmission unit 15, a camera fixing plate 19, a transmission unit fixing plate 20, and a slide plate 21. The material of the housing 10 is made of hard resin or metal, and the camera 14 and the transmission unit 15 play a role of protecting the camera 14 and the transmission unit 15 from rain and wind by surrounding the camera 14 and the transmission unit 15 with the side plate 17 and the top surface plate 18. There is. Since the lower part is open, the ventilation inside the housing 10 is improved, and the lens of the camera 14 is not fogged even on a day when the humidity is high or the temperature is low.

The side plate 17 is a first side plate 17a, a second side plate 17b, a third side plate 17c, and a fourth side plate 17d, and as shown in FIGS. 6 to 11, a mounting portion 22 and a maintenance fixing portion are provided. It has 23, an upper blocking portion 24, and a lower blocking portion 25. The first side plate 17a has a mounting portion 22, the second side plate 17b is provided so as to be perpendicular to the first side plate a, and the third side plate 17c is provided so as to face the first side plate 17a. The fourth side plate 17d is provided so as to face the second side plate 17b.

As shown in FIG. 6, the top plate 18 has a power supply wiring hole 26, and the power supply wiring hole 26 passes the power supply wiring 28 from the power supply unit 11 to the regulator 27.

The camera 14 is used to photograph the environment around the slinger T, the hook 4, and the suspended load B. If necessary, the camera 14 may have a zoom function and a single-focus wide-angle lens.

The transmission unit 15 transmits the video signal obtained from the camera 14 by the wiring 29. The transmitting unit 15 has an antenna 30, and the video signal transmitted to the transmitting unit 15 is wirelessly transmitted to the receiving unit 12. The transmission unit 15 preferably has a small time lag between the image captured by the camera 14 and the image displayed on the monitor 13.

As shown in FIGS. 6 and 12, the camera fixing plate 19 is provided inside the housing 10 for fixing the camera 14. The camera fixing plate 19 is provided with a first partition plate 19b and a second partition plate 19c so as to be in contact with the L-shaped member 19a and the L-shaped member 19a on two sides inwardly. The camera 14 is installed in the space created between the 1 partition plate 19b and the 2nd partition plate 19c. The camera 14 is fixed to the camera fixing plate 19 by inserting a fixing member 31 through a lateral hole 19d provided in the second partition plate 19c. Further, the L-shaped member 19a is provided with a camera power supply hole 19e for inserting the power supply wiring 28 of the camera 14. The camera fixing plate 19 is integrated with the slide plate 21, and the L-shaped cross section of the L-shaped member 19a is fixed to the slide plate 21 so that a space S is created between the second partition plate 19c and the slide plate 21. ing.

As shown in FIGS. 6 and 12, the transmission unit fixing plate 20 is provided inside the housing 10 for fixing the transmission unit 15. The transmission unit fixing plate 20 has an L-shape, and the fixing member 31 is inserted through the vertical hole 32, and the transmission unit 15 is fixed to the inside of the transmission unit fixing plate 20. Further, the transmission unit fixing plate 20 is also integrated with the slide plate 21 like the camera fixing plate 19, and the L-shaped cross section is fixed to the slide plate 21.

The slide plate 21 is integrated with the camera fixing plate 19 and the transmission unit fixing plate 20, and is made slidable by the rail guide 33 with respect to the second side surface plate 17b which is the side plate 17. Further, below the slide plate 21, a maintenance fixing hole 23a for communicating with the second side surface plate 17b and inserting the fixing member 31 is provided. Further, as shown in FIG. 6 or 9, on the slide plate 21, the camera fixing plate 19 and the transmission unit fixing plate 20 are provided with a step in the vertical direction to pass the power supply wiring 28 and the wiring 29 in the horizontal direction. It is provided side by side. On the slide plate 21, the camera fixing plate 19 is provided on the jib tip 3a side, and the transmission portion fixing plate 20 is provided on the opposite side of the jib tip 3a. By providing the transmission unit fixing plate 20 on the opposite side of the jib tip 3a, the antenna 30 does not buffer the jib tip 3a, and a video signal can be stably transmitted. Since the second side plate 17 is perpendicular to the first side plate 17 having the mounting portion 22, the antenna 30 faces the opposite side of the jib tip 3a at any position of the jib tip 3a. It will not be buffered.

As shown in FIG. 6 or 9, the mounting portion 22 is for mounting the housing 10 on the jib tip 3a, and is provided on the first side plate 17. The convex mounting hardware 22a is fixed to the upper part of the first side surface plate 17 by a fixing member 31. Then, the housing 10 is fixed to the jib tip 3a by fixing the tubular body 35 connected to the jib tip 3a by the clamp 34 fixed on the mounting hardware 22a.

As shown in FIGS. 6, 7, 8 or 10, the maintenance fixing portion 23 is a hole for maintaining the slide plate 21 inside the housing 10, and is provided in the middle portion of the second side surface plate 17. There is. As described above, the slide plate 21 can be maintained inside the housing 10 by inserting the fixing member 31 from the outside of the housing 10 so as to communicate with the maintenance fixing hole 23a of the slide plate 21.

As shown in FIG. 6 or 9, the rail guide 33 is a guide for sliding the slide plate 21, and is on the first side plate 17 and the third side plate 17 on the second side plate 17 side. Two are provided in parallel. The slide plate 21 can slide the groove D formed between the two rail guides 33 and the second side plate 17 with respect to the second side plate 17.

As shown in FIGS. 7 and 8, by removing the fixing member 31 attached to the maintenance fixing portion 23, the user can slide the slide plate 21 toward the opening 36 of the housing 10. By sliding a part of the slide plate 21 out of the housing 10, maintenance of the camera 14 and the transmission unit 15 can be facilitated.

As shown in FIG. 6 or 9, the lower blocking portion 25 is a protrusion for preventing the slide plate 21 from falling from the opening 36 of the housing 10, and is provided on the third side surface plate 17. .. The transmitting portion fixing plate 20 is provided with a blocking protrusion 20a on the third side surface plate 17 side, and the lower blocking portion 25 is hooked on the blocking protrusion 20a to be integrated with the transmitting portion fixing plate 20. All of the sliding plates 21 are blocked so as not to come out of the housing 10.

As shown in FIGS. 8, 11 or 13, the upper blocking portion 24 is provided at the joint between the top plate 18 and the rail guide 33, and blocks the slide plate 21 so as not to be guided to the top plate 18. There is. Therefore, the power supply wiring 28 and the wiring 29 are sandwiched by the slide plate 21 due to the wiring gap G formed between the upper surface plate 18 and the slide plate 21 by the vertical width of the upper blocking portion 24. It is preventing.

As shown in FIG. 6 or 11, the regulator 27 is provided on the first partition plate 19b of the camera fixing plate 19 on the side of the fourth side plate 17. As shown in FIG. 13, the regulator 27 adjusts the voltage of the power supply obtained from the power supply unit 11 and supplies power to the camera 14 and the transmission unit 15, respectively. Further, the regulator 27 displays the voltage of the power supply obtained from the power supply unit 11 or the remaining battery level, and the replacement time of the power supply unit 11 can be known. The fourth side plate 17 may have a window portion 37 for confirming the voltage displayed by the regulator 27 or the remaining battery level from the outside of the housing 10. If the housing 10 is made of a transparent material, the window portion 37 may be omitted.

[Mounting structure]
A mounting structure for mounting the housing 10 on the jib tip 3a will be described. As shown in FIGS. 6, 14 or 15, the first support plate 38 is fixed by an eyebolt 39 on the overwinding limit device 5 attached to the jib tip 3a. Further, the second support plate 40 is fixed on the first support plate 38 with bolts 41 and nuts 42. A bearing 43 and a bracket 44 are fixed on the second support plate 40. The bracket 44 is swingable in the direction of arrow X in FIG. 15 with respect to the center of the bearing 43. The bracket 44 supports the upper portion of the cylinder 35 so that the shaft 47 penetrates therethrough, whereby the cylinder 35 is in a direction orthogonal to the swing direction of the bearing 43 of the bracket 44. It is swingable in the Y direction. Then, the housing 10 is fixed to the jib tip 3a by the clamp 34 fixed to the mounting hardware 22a fixing the tubular body 35 to the side plate 17 of the housing 10. As described above, since the bracket 44 and the cylinder 35 can swing in the directions orthogonal to each other, the housing 10 fixed to the cylinder 35 even if the jib tip 3a of the crane wheel 2 moves up, down, left and right can be formed. It always faces the surface of the earth.

At the work site, an auxiliary jib 3 may be separately attached to the jib 3 in order to extend the working radius of the mobile crane 2. When the auxiliary jib 3 is attached, the overwinding limit device 5 attached to the jib tip 3a is separately attached to the auxiliary jib tip 3a. Therefore, even when the auxiliary jib 3 is separately attached, the housing 10 is attached to the overwinding limit device 5 at the auxiliary jib tip 3a, and the surrounding environment of the suspended load B and the hook 4 and the state of the slinger T are confirmed. be able to.

Further, as shown in FIG. 6, in order to prevent the housing 10 from falling, a safety rope 45 connecting the mounting hardware 22a and the eyebolt 39 may be provided.

Further, as shown in FIG. 6 or 14, the tubular body 35 may have a string portion 46 connected to the weight sensing rope 9. By having the string portion 46, the housing 10 is prevented from shaking too much even when the jib 3 is moved and shakes too much or when a strong wind blows.

The present invention is not limited to this specification, and design changes, additions, and the like are permitted as long as they do not deviate from the gist of the invention according to each claim.

The present invention is attached to the jib tip 3a of the mobile crane 2 and is used for monitoring the state of the hook 4, the vicinity of the suspended load B, and the slinger T.

1 Hook and suspended load monitoring device 2 Crane wheel 3 Jib 3a Jib tip 4 Hook 5 Overwinding limit device 6 Weight 7 Center hole 8 Suspended rope 9 Weight sensing rope 10 Housing 11 Power supply unit 12 Receiver 13 Monitor 14 Camera 15 Transmission Part 16 Terminal 17 Side plate 17a 1st side plate 17b 2nd side plate 17c 3rd side plate 17d 4th side plate 18 Top plate 19 Camera fixing plate 19a L-shaped member 19b 1st partition plate 19c 2nd partition plate 19d Horizontal hole 19e Camera power supply hole 20 Transmitter fixing plate 20a Blocking protrusion 21 Slide plate 22 Mounting part 22a Mounting hardware 23 Maintenance fixing part 23a Maintenance fixing hole 24 Upper blocking part 25 Lower blocking part 26 Electrical wiring hole 27 Regulator 28 Power supply wiring 29 Wiring 30 Antenna 31 Fixing member 32 Vertical hole 33 Rail guide 34 Crane 35 Crane body 36 Opening 37 Window 38 First support plate 39 Eyebolt 40 Second support plate 41 Bolt 42 Nut 43 Bearing (bearing)
44 Bracket 45 Safety Rope 46 String 47 Axis C Cockpit B Suspended Load T Slinger W Wall S Space D Groove G Wiring Gap

Claims (8)

A housing that is attached to the tip of the telescopic jib of the crane and has an open bottom,
Inside the housing, a camera that captures the tip of the hook and the suspended load,
Inside the housing, a transmitter that wirelessly transmits the video signal acquired by the camera,
A receiving unit that receives the video signal transmitted by the transmitting unit,
A monitor that displays the video signal received by the receiver, and
A power supply unit that is detachably attached to the tip of the jib by magnetic force and supplies power to the camera and the transmission unit inside the housing.
Have,
The housing is a box-shaped body having a side plate surrounding the periphery and a top plate and having an opening at the bottom.
Inside the housing, a camera fixing plate for fixing the camera toward the opening direction and a camera fixing plate
A transmitter fixing plate for fixing the transmitter and a transmitter fixing plate
A slide plate that slides with respect to the side plate in the opening direction by a rail guide and has the camera fixing plate and the transmission portion fixing plate attached.
A hook and suspended load monitoring device characterized by having. The side plate includes a mounting portion for mounting the housing on the tip end side of the jib, and a mounting portion.
A maintenance fixing part that keeps the slide plate housed inside the housing,
A lower blocking portion that prevents the slide plate from falling in the opening direction,
The hook and suspended load monitoring device according to claim 1 , wherein the hook and suspended load monitoring device are provided. The top plate has a wiring hole for passing wiring from the power supply unit to the inside of the housing.
An upper blocking portion provided at a joint with the rail guide and blocking the slide plate,
Equipped with
The hook and suspended load monitoring device according to claim 1 or 2 , wherein a wiring gap obtained by the upper blocking portion is provided between the upper surface plate and the slide plate. The first side plate provided with the mounting portion and the second side plate having the rail guide and provided in parallel with the slide plate are connected at a right angle.
The camera fixing plate and the transmitting unit fixing plate are provided side by side on the slide plate.
The camera fixing plate is provided on the tip end side of the jib, and the camera fixing plate is provided.
The hook and suspended load monitoring device according to claim 2 , wherein the transmission unit fixing plate is provided on the side opposite to the jib tip end side. The power supply unit is connected to a regulator provided inside the housing to adjust the voltage to supply power to the camera and the transmission unit.
The regulator displays the voltage supplied from the power supply unit or the remaining battery level of the power supply unit.
The hook and suspension according to any one of claims 1 to 4 , wherein the side plate includes a window portion for confirming the displayed voltage or the remaining battery level from the outside of the housing. Load monitoring device. The housing includes a mounting bracket on the mounting portion, a clamp provided on the mounting bracket, and the like.
Equipped with
The overwinding limit device provided at the tip of the jib has
A support plate fixed by an eyebolt on the overwinding limit device,
Bearings provided on the support plate and
A bracket provided so as to be swingable with respect to the center of the bearing,
A cylinder provided on the bracket so as to be swingable in a direction orthogonal to the swing direction of the bracket, and
Equipped with
The hook and suspended load monitoring device according to claim 2 , wherein the tubular body is detachably fixed to the clamp. The hook and suspended load monitoring device according to claim 6 , further comprising a safety rope connecting the eyebolt and the mounting bracket. The hook and suspended load according to claim 6 or 7 , wherein the tubular body has a string portion for preventing overswing connected to a weight sensing rope connected to the overwinding limit device. Monitoring device.

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