JP3149327U - Crane surveillance camera mounting device - Google Patents

Abstract

A suspension device for a surveillance camera for a crane capable of capturing a stable image even in a minute vibration or wind. A portion of a rotary shaft 38 inserted into a rotary damper 41 is slit, and the shaft itself is slightly expanded by a screw or a pin to the shaft center, thereby firmly fixing a bearing portion spread due to wear or the like. Fixed and easy to adjust. In addition, screw drop prevention brackets 32a and 32b are attached so that the screws are not exposed except for the parts hidden by the crane boom mounting part, so that the screw head can be suppressed even if the screw is loosened due to repeated swinging or vibration. You can reduce the risk of falling out. [Selection] Figure 2

Description

  The present invention relates to a camera suspension device with a non-powered accuracy tracking device for a work monitoring camera attached to a crane boom that rises and falls.

There is a utility model registration No. 3076631 known as a suspension support device for a surveillance camera that is attached to the tip of a crane boom.
In this case, the entire outer peripheral surface of the support shaft is threaded, and the support bracket is fixed and the rotary damper is fixed with a nut.

Utility model registration No. 3076631

In the surveillance camera hanging device as described above, the entire outer peripheral surface of the support shaft is threaded and nuts are used. This is a fixed mechanism, and the vibration of the crane due to repeated swinging and vibrations causes the ratchet at the joint with the shaft due to wear of the square or round shaft insertion port of the rotary damper. Stable video cannot be taken due to the influence.

Also, because many screws are exposed to the outside, loosening occurs due to repeated swinging and vibration of the crane over a long period of time, and then dropping may cause injury to the operator under the crane. There is a risk of damage to the surroundings due to the nature and the scattered matter.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a crane surveillance camera suspension apparatus having a simple structure, stable operation and safety.

For this reason, in the present invention, as claimed in claim 1, in a crane surveillance camera that is attached to and suspended from a crane boom, a fixing bracket fixed to the crane boom and a rotary type fixed to the fixing bracket. It consists of a shock absorber (rotary damper), a rotating shaft supported in a rotatable state by the fixing bracket, and a rotating bracket for penetrating and attaching to the lower portion of the rotating bracket for hanging the camera. One side is processed so that it can be inserted into a square or round shaft insertion port of a rotary shock absorber (rotary damper), and the center of the shaft from the shaft end to one or both ends of the rotary shaft A screw hole or a taper hole is provided in the shaft center toward the shaft, and one or more characters are inserted in the insertion portion of the rotary shock absorber (rotary damper) of the rotary shaft. When a slot is formed and the screw is inserted into the threaded part, the gap between the slits is slightly expanded by tightening the screw or pin and adjusting the depth, and the wear caused by the wear. The present invention is characterized in that a mechanism capable of adjusting the backlash between the shaft insertion port and the shaft of the shock absorber is provided.

According to a second aspect of the present invention, in the fixing bracket fixed to the crane boom and the camera hanging portion supported by the suspension, the mechanism is configured to cover the screw or pin that assembles or fixes the mechanism. In addition to the surface fixed to the crane boom integrally formed from the surface fixed to the screw, it has a screw drop-off prevention metal fitting having no fixing screw or pin.

This device eliminates play in the shaft of the rotary shock absorber (rotary damper) and is stable even in fine vibrations and winds due to the swing of the boom and the wind of the surveillance camera boom that is fixed to the crane boom. It is possible to shoot the video.
Furthermore, since it is configured with a simple structure and the backlash adjustment can be easily performed from both sides of the apparatus, the cost during maintenance is reduced.

In addition, in the present invention, the screw heads of the assembly screws of the parts constituting the device and the cover that is fixed to the crane boom only by the surface that is fixed to the crane boom are covered. Dropout can be prevented.

Further, in the present invention, by using the waterproof bearing, it is possible to maintain a stable operation even in an environment exposed to strong wind and rain with a simple structure.

FIG. 1 shows the use of the crane surveillance camera mounting device of the present invention.
The crane vehicle A is provided with a multistage boom 1 that can be expanded and contracted, and a surveillance camera 2 using the crane surveillance camera mounting device of the present invention is suspended at the tip thereof.

A camera controller 7 installed in the crane operator's cab 6 via a cable drum 5 that winds the cable from the surveillance camera 2 along the crane boom through the support portion 4 in accordance with the expansion and contraction of the crane boom. It is connected to the.

A camera operation switch BOX 8 and a monitor 9 are connected to the camera controller 7.
The camera operation switch BOX8 uses the camera's shooting position, aperture, focus, zoom,
The photographing characteristics are set, and the monitor 9 displays an image transmitted from the monitoring camera 2.

As shown in FIG. 2, the crane surveillance camera mounting device B has a rotating shaft 38 supported in a rotatable state by a bearing holder 35 in which a bearing is inserted into a crane boom mounting portion 31 and a fixing bracket 33. There is
Both ends of the rotating shaft 38 enter the inside of the damper cover 37. At both ends or one side of the rotating shaft 38, there is a rotary shock absorber (rotary damper) inside the damper cover 37.
The rotary shaft end slit insertion portion 38a is inserted into the bearing portion 41, and a flat screw or pin is inserted as the rotary shaft end adjustment screw 43 into the rotary shaft end slit widening taper processing portion 38c. The widened portion 38b widens outward and is fixed to the bearing portion of the rotary shock absorber (rotary damper) 41 without a gap.
A rotation coupling bracket 34 fixed to the rotary shaft 38 and a hanging bracket 39 connected to the rotation coupling bracket 34 and suspended from the camera body are mounted.

Further, a damper cover side plate 46 that closes the opening of the damper cover 37 that protects the rotary shock absorber (rotary damper) 41 from rainwater is attached by a damper cover side fixing screw 42 and a damper cover upper fixing screw 45.

Damper cover side fixing screw 42 for fixing the damper cover side plate 46
In order to prevent the damper cover upper fixing screw 45 from falling off, the crane boom mounting brackets 32a and 32b are integrally formed so as to surround the side surface of the damper cover 37 from the surface of the crane boom mounting portion 31. It is fixed and configured by a screw drop-off prevention fitting fixing screw 40 that is connected only to the surface that contacts the portion 31.

With respect to the industrial use according to claim 1 of the present invention, it is possible to improve the maintainability of a device using the rotary shock absorber (rotary damper) or the like that is used by inserting a shaft inside. The industrial use according to claim 2 is effective for preventing a screw, a pin, etc. of a device attached at a high place from falling off.

It is the figure which showed the Example of the attachment apparatus of the surveillance camera for cranes. It is the figure which has connected the attachment apparatus of the surveillance camera for cranes, and the camera main body. It is a figure which shows a rotating shaft end process part. It is a figure which shows the general view of a waterproof type bearing. It is a figure which shows the connection of the camera controller and monitor in a crane operating room.

Explanation of symbols

A ... Mobile crane B ... Crane surveillance camera mounting device C ... Rotary shaft end machining part D ... Waterproof bearing E ... Camera controller and monitor 1 in crane cab 1 ... Boom 1
2 ... surveillance camera 3 ... cable 4 ... support part 5 ... cable drum 6 ... crane cab 7 ... camera controller 8 ... camera operation switch BOX
9 ··· Monitor 30 ··· Fixing nut 31 · · Crane boom mounting portion 32a, b · · Screw drop-off prevention fitting 33 · · Fixing fitting 34 · · Rotary coupling fitting 35 · · Bearing holder 36 · · Shaft fixing fitting 37 · · Damper cover 38 · · Rotary shaft 38a · Rotary shaft end damper insertion processing portion 38b · Rotary shaft end slot widening portion 38c · Rotary shaft end slit widening taper processing portion 39 · · Hanging bracket 40 · · Screw drop off Prevention bracket fixing screw 41..Rotation type shock absorber (rotary damper)
42 .. Damper cover side fixing screw 43.. Rotating shaft end adjusting screw 44. Damper cover side plate fixing screw 45. Damper cover upper fixing screw 46 Damper cover side plate 47 Camera body 50 Waterproof seal

Claims (3)

In a suspension device for a surveillance camera used by attaching to the tip of a boom of a crane vehicle or a tower type crane or its axis, a fixing bracket fixed to the crane boom, and fixed to the fixing bracket, A rotary shock absorber (rotary damper), a rotary shaft supported in a rotatable state by the fixing bracket, and a rotary bracket for penetrating and attaching to the lower portion of the rotary bracket for hanging the camera. It is processed so that it is inserted into a square or round shaft insertion port of a rotary shock absorber (rotary damper) at both ends or one side, and is attached to both ends or one shaft end of the rotary shaft. A threaded or tapered hole is provided in the axial center from the end toward the center of the shaft, and the rotary shock absorber (rotary damper) is inserted into the rotating shaft. When the part is slit in a single letter or cross, and the screw or pin is inserted into the threaded or tapered part, the slot in the slot is adjusted by tightening the screw or pin or adjusting the depth. A monitoring camera suspension device for a crane provided with a mechanism that can be slightly adjusted to reduce the shakiness between the shaft insertion port and the shaft of the shock absorber caused by wear or the like. The fixing bracket fixed to the crane boom and the camera suspension supported by the suspension are structured to cover the screws or pins that assemble or fix the mechanism and are fixed to the crane boom. A monitoring camera suspension device for a crane having a screw drop-off prevention fitting that does not have a fixing screw or pin other than the surface fixed to the crane boom integrally formed from
By using a waterproof bearing for the rotating shaft that is supported in a rotatable state of the suspension device, waterproofing of the rotating shaft portion can be simplified and the cost can be reduced.