JPH0427320Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a boom fixing device for a frost damage prevention machine, and in particular, to a boom for a frost damage prevention machine that can stably support a telescopic boom in its vertical position. It concerns a fixation device.

[Prior Art] The inventors previously proposed a frost damage prevention machine. The frost damage prevention machine consists of a frame body that can run, a blower that is attached to the frame body and discharges the air sucked in through an expandable duct hose, and a duct that is rotatably connected to the frame body at the base end. It has a telescopic boom that suspends the hose, and a folding cylinder that is rotatably coupled to the frame body and the telescopic boom at both ends and expands and contracts to swing the telescopic boom. When in use, the folding cylinder is extended to hold the telescoping boom in a vertical position, and then the telescoping boom is extended vertically upward to hold the upper end opening of the duct hose high in the air, and the blower is activated. This allows relatively warm air from above to be sucked in through the opening at the top of the duct hose, and then blows this air to the ground.

[The problem that the idea attempts to solve]

When using the frost damage prevention machine, the telescopic boom is extended vertically upwards and the frost damage prevention machine is run, but at that time, the center of gravity of the telescoping boom is at a high position, so the telescoping boom tends to swing significantly back and forth and from side to side.
The telescopic boom support becomes unstable. Additionally, if an oil leak or a drop in oil pressure occurs in the folding cylinder, the ability of the folding cylinder to hold the vertical position of the telescopic boom will decrease, causing the telescopic boom to tilt from the vertical position. In order to return it to the vertical position, it becomes necessary to perform hydraulic operation.

The purpose of this invention is to provide a boom fixing device for a frost protection machine that can stably support a telescopic boom in a vertical position during use.

[Means to solve the problem]

The frost damage prevention machine according to this invention has a frame body that can run, a blower that is attached to the frame body and discharges the air sucked in through an expandable duct hose, and a base end that is rotatably connected to the frame body. The apparatus includes a telescoping boom for suspending a duct hose, and a folding cylinder whose both ends are rotatably connected to the frame body and the telescoping boom and swinging the telescoping boom. The boom fixing device of this frost protection machine consists of a supported member that protrudes from one side of the base end of the telescoping boom so that it can move integrally with the telescoping boom, and a supported member that is integrally provided on the tip of the frame body and is telescopic. The boom includes a support part that receives and supports the supported member in a vertical position of the boom, and a lock member that releasably fixes the supported member to the support part.

[Effect]

During frost damage prevention work, the folding cylinder is operated to swing the telescopic boom from a substantially horizontal storage position to a substantially vertical position. At this time, the supported member, which is provided integrally with the telescopic boom at the base end of the telescopic boom, is received and supported by the support part of the frame main body or the support part integral with the frame main body. The locking member is operated after the telescoping boom is in the vertical position to secure the supported member to the support. When finishing the frost damage prevention work, the locking member is operated to release the supported member from the support part, and then the folding cylinder is operated to return the telescopic boom to the storage position.

〔Example〕

This invention will be described below with reference to embodiments shown in the drawings.

FIG. 6 is an overall schematic diagram of the frost damage prevention machine shown in a state in use. The tractor 10 has front wheels 12
It has rear wheels 14, is self-propelled, and has a driver's seat 16 for a driver to get in and drive the tractor 10. The frost damage prevention device 18
Frame main body 22 that can run due to 0
It is connected to the rear end of the tractor 10 via a hitch 24, and is towed by the tractor 10. The hydraulic operating device 26 is connected to the frost protection machine 18 side near the hitch 24 via a support arm 28, and is arranged so as to protrude near the driver's seat 16.
The blower 30 is attached to the rear of the frame body 22 with its discharge side facing the rear of the frost protection device 18, and is driven by a hydraulic motor 32. Right angle bent pipe 3
4 is fixed to the frame body 22, and the rear end side is connected to the suction port of the blower 30. An oil pump 36, an oil tank 38, and an oil cooler 40 are further placed and fixed on the frame body 22, and the oil pump 36 sucks oil from the oil tank 38 and is used for hydraulic equipment such as the hydraulic motor 32. The oil cooler 40 cools the oil by generating a predetermined hydraulic pressure. The telescopic boom 42 is rotatably coupled to the frame body 22 via a fulcrum 44 at its base end, and is extendable and retractable. The bellows-shaped accordion duct hose 46 is connected to the telescopic boom 42 at its distal end and middle part, is suspended by the telescopic boom 42, is open at its distal end, and is connected to the right-angled bent pipe 34 at its proximal end. ing. The folding hydraulic cylinder 48 is rotatably coupled to the frame body 22 and the telescopic boom 42 at both ends, respectively;
The telescopic boom 42 is swung around the fulcrum 44 by expansion and contraction.

During frost damage prevention work, the folding hydraulic cylinder 48 is extended and the telescopic boom 42 is placed in a vertical position. Further, the telescopic boom 42 is extended by the operation of the hydraulic motor 47, and the tips of the telescopic boom 42 and the accordion duct hose 46 are positioned high in the air (FIG. 6). As the blower 30 rotates, relatively warm air from above is sucked in from the upper end opening of the accordion duct hose 46, and this air is sent out from the discharge side of the blower 30 toward the ground behind the frost protection machine 18. This increases the temperature of the ground surface and prevents frost from forming on the ground surface. When finishing the frost damage prevention work, the hydraulic motor 47 is operated to retract the telescopic boom 42.
Further, the folding hydraulic cylinder 48 is contracted, and the telescopic boom 42 is rotated around the fulcrum 44 to return to the horizontal position as the storage position.

1 and 2 are views of details of the main parts of the embodiment as seen from the side and front of the frost damage prevention device 18. The supported member 50 is formed in the shape of a rectangular frame, and is fixed to the base end of the telescopic boom 42 so as to be able to move integrally therewith and protrude at right angles. The coupling arm 52 is fixed to the telescopic boom 42 and the supported member 50 at both ends, forms a triangle together with the telescopic boom 42 and the supported member 50, and facilitates coupling of the supported member 50 to the proximal end of the telescopic boom 42. making it strong. The steady rest wire 54 is connected at both ends to the overhanging end of the supported member 50 and to a portion of the telescopic boom 42 that is appropriately spaced from the fulcrum 44, so that the steady rest wire 54 is connected at both ends to the extended end of the supported member 50 and to a portion of the telescopic boom 42 that is appropriately spaced from the fulcrum 44.
Contributes to steady rest. The support portion 56 is formed at the upper end of the frame body 22 , receives the lower surface of the supported member 50 on its upper surface at the vertical position of the telescopic boom 42 , and supports the telescopic boom 42 and the supported member 50 . The locking member 58 includes a vertical rod 60 that is vertically slidably and rotatably supported on a plurality of horizontal portions 62 of the frame body 22 and has a manually operated handle at its lower end. 64 and an external thread 66 at the top end.
have. The locking nut 68 is fixed to the projecting end of the supported member 50 so as to face the male screw 66 in a vertical position of the telescopic boom 42 and to be able to be screwed into the locking nut 68 . Cylindrical collar 70
has washers 72, 72 arranged at both ends thereof, and is penetrated by the vertical rod 60 together with the washers 72, 72. The stopper nut 74 is screwed onto the male thread 66 and abuts against the lower surface of the support portion 56 . The compression coil spring 76 is fitted onto the vertical rod 60 and is compressed between the lower washer 72 and the horizontal portion 62 of the frame body 22, and pushes the vertical rod 60 upward through the cylindrical collar 70. It is energizing.

1 and 2, the telescopic boom 42 is held in a horizontal, retracted position, the folding hydraulic cylinder 48 is retracted, and the supported member 50 is separated from the support 56. Due to the extension of the folding hydraulic cylinder 48, the telescopic boom 42 swings around the fulcrum 44, and the lower surface of the supported member 50 touches the support part 56.
When resting on the upper surface, the upper end of the male screw 66 comes into contact with the locking nut 68, and the vertical rod 60 descends against the compression coil spring 76. Next, the operator operates the handle 64 to rotate the vertical rod 60 and thread the male thread 66 into the locking nut 68. As a result, the supported member 50 is fixed to the support portion 56 at the lock member 58, the telescopic boom 42 is coupled to the frame body 22 at the fulcrum 44 and the extended end of the supported member 50, and the telescopic boom 42 is connected to the frame body 22. 42 is firmly fixed, and the telescopic boom 42 is stably supported even when the telescopic boom 42 is extended high into the air. When the frost damage prevention work is completed and the telescopic boom 42 is returned to the storage position, the operator turns the handle 64 in the opposite direction to remove the male screw 66 from the locking nut 68, and then retracts the folding hydraulic cylinder 48. let

FIG. 3 shows another example of a locking member. In this lock member 58b, the handle 64 is omitted. A hydraulic motor 78 capable of forward and reverse rotation is connected to the conduit 8
0,82 to a directional control valve 84, which in turn connects to the oil pump 36 and oil tank 38, respectively.
8 is selectively connected to conduits 80 and 82. The vertical rod 60 and the rotating shaft 90 of the hydraulic motor 78 are arranged on the same straight line, and the lower end of the vertical rod 60 and the rotating shaft 90
At the upper end of each square block 9 of the same shape
2,94 is fixed. Square pipe color 9
6 has an inner circumferential contour that is the same as the circumferential contour of the rectangular blocks 92 and 94, and the rectangular blocks 92 and 94 fit into the inner circumference of the rectangular pipe-shaped collar 96. The inner circumference can be slid. The rotation of the rotating shaft 90 is transmitted to the vertical rod 60 via the square pipe-like collar 96. 1st
Instead of operating the handle 64 in FIGS. and 2, the directional control valve 84 is operated to rotate the rotary shaft 90 of the hydraulic motor 78, thereby controlling the screw engagement between the male screw 66 and the lock nut 68.

FIGS. 4 and 5 are a perspective view of still another example of the locking member as seen diagonally from above, and a view as seen from the side of the frost protection device 18. The bar 98 of the lock member 58c is rotatably supported by the side wall of the support portion 56 at both ends, and has a stay 100 in the center in the axial direction.
And on both sides of this stay 100 there are L-shaped retainers 1.
02 and 102 are fixed so that they can rotate together. The operating hydraulic cylinder 104 is rotatably coupled to the horizontal portion 62 of the frame body 22 at its lower end and to the end of the stay 100 at its upper end. When fixing the supported member 50 to the support part 56, the operating hydraulic cylinder 104 is extended, the stay 100 is rotated counterclockwise in FIG.
As a result, the tip of the L-shaped presser 102 presses the supported member 50 against the support portion 56 and fixes it. To release the fixation of the support member 50 to the support part 56 by the lock member 58c, the operating hydraulic cylinder 104 is contracted and the stay 100 is rotated clockwise in FIG. is separated from the supported member 50.

[Effect of idea]

As described above, according to this invention, the base end of the telescopic boom is rotatably coupled to the frame body, and the supported member is provided so as to be able to move integrally with the base end of the telescopic boom. In the vertical position, it is supported by a support part of the frame body or a support part integral with the frame body, and is fixed to the support part by a locking member. Therefore, the telescoping boom is connected to the frame body at multiple points, including the rotation point and the fixing point to the support portion by the locking member, so that the base end of the telescoping boom is firmly held to the frame body, This ensures that the vertical position of the telescopic boom is maintained.

[Brief explanation of the drawing]

The drawings relate to an embodiment of this invention, and FIGS. 1 and 2 are details of the main parts seen from the side and front of the frost protection machine, FIG. 3 is a diagram showing another example of the locking member, and FIG. 5 and 5 are a perspective view of still another example of the locking member seen diagonally from above and a side view of the frost damage prevention device, and FIG. 6 is an overall schematic diagram of the frost damage prevention device shown in the state in use. be. 18... Frost damage prevention machine, 22... Frame body,
30...Blower, 42...Telescopic boom, 46...
Accordion duct hose (duct hose), 4
8...Folding hydraulic cylinder, 50... Supported member, 56... Support portion, 58, 58b, 58c...
...Lock parts.

Claims (1)

[Claims for Utility Model Registration] (1) A frame main body 22 that can run, a blower 30 that is attached to the frame main body 22 and discharges air sucked in through an expandable duct hose 46, and a base end that rotates. a telescoping boom 42 movably coupled to the frame body 22 and suspending the duct hose 46; and a folding boom 42 rotatably coupled at both ends to the frame body 22 and the telescoping boom 42 to swing the telescoping boom 42. In the frost damage prevention machine 18 having a cylinder 48, a supported member 50 protrudes from one side of the proximal end of the telescopic boom 42 so as to be able to move integrally with the telescopic boom 42, and the frame main body 22.
The telescopic boom 4 is integrally provided to the upper end of the telescopic boom 4.
a support portion 56 that receives and supports the supported member 50 at the vertical position of No. 2;
A boom fixing device for a frost protection machine, characterized in that it has lock members 58, 58b, and 58c for releasably fixing the boom to the support portion 56. (2) The lock members 58, 58b include a male screw member 66 and a female screw member 68 that can be screwed together,
including a rotating member 64, 78 that rotates one of the two screw members 66, 68;
8 is attached to the frame main body 22 so as to be displaceable in the axial direction, and the other is attached to the supported member 5.
A boom fixing device for a frost damage prevention machine according to claim 1, wherein the boom fixing device is fixed at zero. (3) The boom fixing device for a frost protection machine according to claim 2, wherein the rotating member 64 is a manually operated handle. (4) The boom fixing device for a frost protection machine according to claim 2, wherein the rotating member 78 is a hydraulic motor capable of forward and reverse rotation. (5) The locking member 58c includes a bar 98 that is rotatably supported on the support portion 56, and a bar 98 that is rotatably supported by the support portion 56.
8 and the supported member 50
a pressing member 102 that presses the supporting portion 56;
and a cylinder 104 whose both ends are coupled to the bar 98 and the frame body 22 and rotate the bar 98. .