JPH0426550Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) The present invention relates to a drilling pole erecting device with a telescoping boom that uses a hydraulically driven auger device, and more specifically, to such a drilling pole erecting device with a telescopic boom. The present invention relates to an oil feed hose support device for supporting an oil feed hose to an auger device.

(Prior art) In this type of drilling and pole-erecting equipment with a telescopic boom, when performing drilling work, the auger device is fixed to the tip of the extended telescopic boom; The oil supply hose is also pulled out to the tip of the telescopic boom (hydraulic motor of the auger device). When the oil hose is pulled out for a long time in this way, the middle part of the oil hose tends to sag.For this reason, conventionally, this type of drilling pole construction equipment with a telescopic boom has been designed to prevent the oil hose from sagging. It is customary to provide support devices for this purpose.

Incidentally, as an example of a known oil supply hose support device, there is a structure shown in FIGS. 6 and 7, for example (Japanese Utility Model Application Publication No. 57-79686). In this known oil supply hose support device, the oil supply hose 109
An annular frame 11 is inserted into a long cylindrical guide 103 and is installed so as to surround the guide 103 around the outer periphery of the tip of the intermediate boom 112.
It is supported by being fixed to one side 110a of 0. Note that the guide 103 is slidable relative to the base boom 111 in the direction of boom extension and contraction. By supporting the guide 103 with the oil feed hose 109 inserted into the guide 103 in this way, the oil feed hose 109 will not hang down even when the telescopic boom 101 is in the extended state. The frame 110 is fixed to the tip of the intermediate boom 112 when the auger device 102 is used, and to the tip of the base boom 111 when the auger device 102 is not used. A locking device 105 for selectively locking and fixing the frame body 110 to the base boom and the intermediate boom is provided on the upper surface side of the telescopic boom 101 between the base boom and the intermediate boom.

However, in this known oil supply hose support device, the guide 10 through which the oil supply hose 109 is inserted is
Since the annular frame 110 is used to fix the telescopic boom 101, the outer periphery of the telescopic boom 101 becomes large, increasing the overall size.
On the other hand, since the locking device 105 is provided on the upper surface side of the telescopic boom 101, there are protruding portions on two outer circumferential surfaces (one side surface and the upper surface) of the telescopic boom 101. (guide 103 and locking device 105), and when there are many protruding parts on the outer surface of the telescopic boom 101, it becomes easy for ropes etc. to get caught on the protruding parts during work, or the protruding parts Disadvantageous problems arise, such as parts getting in the way.

(Purpose of the invention) In view of the problems of the conventional oil supply hose support device as described above, the present invention is designed to have a compact overall structure and to reduce the surface on the outer periphery of the telescopic boom on which the protruding portion is formed. The purpose of this invention is to propose an oil supply hose support device for a trench pole erection device with a telescopic boom.

(Means for Achieving the Object) The present invention consists of a telescoping boom formed by telescopically connecting a base boom, an intermediate boom, and a top boom in sequence, and a hydraulically driven boom that is attached to the telescoping boom via an auger support. an auger device, and the auger support can be selectively locked and fixed to the top boom side when the auger device is in use, and to the base boom side when the auger device is not in use. The oil feed hose support device includes an oil feed hose guide device for guiding the oil feed hose to the auger device, which comprises a base guide, an intermediate guide, and a tip guide connected in order in a telescopic manner. The base guide is fixed to the base boom in a state facing the boom extension/contraction direction on one side of the telescoping boom, and the tip guide is connected and installed to the auger support, and the oil supply hose on the telescoping boom is installed. On the same side where the guide device is installed, when the auger support is locked and fixed to the base boom side, the intermediate guide can be detached from the intermediate boom, and the auger support is locked to the top boom side. The present invention is characterized in that an intermediate guide operating mechanism is provided which allows the intermediate guide to be connected and fixed to the intermediate boom when the boom is extended when the intermediate guide is fixedly fixed.

(Function) The refueling hose support device of the present invention has a refueling hose guide device installed on one side of the telescopic boom, and an intermediate guide for separating or connecting the intermediate guide of the refueling hose guide device to the intermediate boom. Since the guide operation mechanism is provided on the same side of the telescopic boom as the refueling hose guide device installation side, the entire refueling hose support device is consolidated on one side of the retractable boom, and the protruding part on the outer periphery of the retractable boom This results in the effect that the number of surfaces on which pores are formed is reduced.

(Embodiment) An embodiment of the present invention will be described with reference to Figs. 1 to 5. Figs. 1 to 4 show the first embodiment of the invention, and Fig. 5 shows the second embodiment of the invention. A telescoping boom drilling pole erecting apparatus with an example refueling hose support apparatus is shown.

The drilling pole erection device with a telescopic boom of the first embodiment shown in FIGS. 1 to 4 includes a three-stage telescopic boom 1 comprising a base boom 11, an intermediate boom 12, and a top boom 13, The auger device 2 is attached to the auger device 2 to perform drilling work.

When the telescopic boom 1 is extended or contracted, the top boom 13 is extended or contracted at twice the speed of the intermediate boom 12.

The auger device 2 is connected via an auger support 21 to the tip of the base boom 11 when the auger device is not in use, and to the top boom 1 when the auger device is in use.
3, respectively. When the auger device 2 is not in use, it is stored horizontally on the side of the base boom 11, and when in use, it is suspended downward from the tip of the top boom 13 to perform drilling work. Reference numeral 22 is a hydraulic motor;
23 is an auger screw rotated by the hydraulic motor 22.

This auger device 2 is connected to an auger support 21 via a support shaft 24.

The auger support 21 is selectively locked and fixed to the tip of the base boom 11 and the tip of the top boom 13 by the locking device 6. That is, this locking device 6 has a lever 61 having locking claws 62 and 63 at both ends, respectively, which is oriented in the direction of boom extension and contraction, and the intermediate portion of the lever 61 is pivotally connected to the auger support 21 with a pin 64. , a locking receiver 65 that can be removably engaged with the base side locking claw 62 of the lever 61 on the lower surface of the tip of the base boom 11;
Furthermore, a locking receiving portion 66 is provided at the tip of the top boom 13, with which the front locking pawl 63 of the lever 61 can be removably engaged. The lever 61 is pivotally mounted with the front locking claw 63 side of the lever being biased upward by a spring 67. The lever 61 is supported by a cam 68 provided on the support shaft 24 of the auger device to support the lower surface of the lever 61 on the proximal locking claw 62 side, so that the upper surface of the lever 61 on the front locking claw 63 side is supported by the spring 67. We are trying to control movement.

When the telescopic boom 1 is in the fully retracted state and the auger device 2 is in the retracted state, the base-side locking pawl 62 of the lever 61 is engaged with the base boom-side locking receiver 65, as shown by solid lines or dotted lines in FIG. At the same time (the front side locking claw 63 is disengaged from the top boom side locking receiver 66), the auger support 21 is locked to the base boom 11 side, and when the auger device 2 is in the operating position, the fourth As shown in the figure, the base side locking claw 62 is disengaged from the base boom side locking receiver 65, and the tip side locking claw 63 engages with the top boom side locking receiver 66, and the auger support 2
1 is adapted to be locked on the top boom 13 side.

Note that in a state where the auger device 2 is stored on the side of the base boom 11, crane work can be performed using the telescopic boom 1 with the auger device 2 stored.

An oil feed hose 9 for supplying hydraulic oil is connected to the hydraulic motor 22 of the auger device 2 . This oil feed hose 9 is supported by an oil feed hose support device that will be described next.

The oil feed hose support device includes an oil feed hose guide device 3 for preventing the oil feed hose 9 from hanging down.
have.

The oil feed hose guide device 3 includes a base guide 31
, an intermediate guide 32 , and a tip guide 33 are sequentially connected telescopically. This oil supply hose guide device 3 is connected to one side 1 of the telescopic boom 1.
a, and is installed so as not to straddle other surfaces (upper surface, lower surface, or opposite side surface) of the telescopic boom 1.

The base guide 31 of the oil supply hose guide device 3 is
The base boom 11 includes a cover member 35 having a U-shaped cross section and a roller 36 that supports the intermediate guide 32 from below. The cover member 35 is fixed so as to cover one side of the base boom 11 while facing in the direction of boom extension and contraction.

The intermediate guide 32 has a cylindrical shape with a rectangular cross section and has a length that spans almost the entire length of the intermediate boom 12. The intermediate guide 32 is supported at an upper position within the cover member 35 of the base guide 31 by the inner surface of the cover member 35, the outer surface of the base boom 11, and the rollers 36. And this intermediate guide 3
2 is expandable and retractable within the cover member 35 in the direction of boom expansion and contraction. Furthermore, this intermediate guide 3
In the fully retracted state shown in FIG. 1, the base guide 31 is prevented from moving any further toward the retracting side by means of an appropriate stopper. The roller 36 is installed near the tip of the base boom 11 so as to support the tip side of the intermediate guide 32 from below, and the base end side of the intermediate guide 32 is attached to the base end of the intermediate guide 32. It is supported by support legs 37 formed to protrude downward.

The tip guide 33 is formed of a long thin plate having a length that spans almost the entire length of the top boom 13.
It is telescopically inserted into the intermediate guide 32. The tip of the tip guide 33 is connected and fixed to the auger support 21 via a connecting member 41.

The oil supply hose 9 is installed inside the cover member 35 of the base guide 31 in a U-shaped folded state. Then, the upper part (tip part) 9a of the oil supply hose 9 folded back into a U-shape is fixed with the stopper 38 in a state along almost the entire length of the tip guide 33, and then The upper portion 9a of the oil supply hose 9 is inserted into the intermediate guide 32 together with the tip guide 33. The tip of the oil feed hose 9 extends from the tip of the tip guide 33 toward the hydraulic motor 22 of the auger device 2.

In this oil supply hose guide device 3, when the auger support 21 is moved in the direction of boom extension and contraction together with the top boom 13 during boom extension and contraction, a tip guide 33 connected to the auger support 21 is moved.
is extended and contracted in the boom extension and contraction direction with respect to the base guide 31 at the same speed as the top boom 13.
At this time, the intermediate guide 32 also needs to extend and contract with respect to the base guide 31 at the same speed as the intermediate boom 12 (1/2 of the extension and contraction speed of the top boom). 32 is actuated by an intermediate guide operating mechanism 5 that can detach or connect the intermediate boom 12 to the intermediate boom 12.

This intermediate guide operation mechanism 5 includes an intermediate boom 12
An engagement pin 42 formed on the side, an engagement member 43 provided at the tip of the intermediate guide 32 and capable of detachably engaging with the engagement pin 42, and the engagement pin 42 and the engagement member 43. The locking member 46 has a locking member 46 for locking and unlocking the locking member in an engaged state, and an operating rod 51 for operating the locking member 46. The intermediate guide operation mechanism 5, which is composed of these members (the engagement pin 42, the engagement member 43, the lock member 46, and the operation rod 51), is attached to the side surface 1a of the telescopic boom 1 on the side where the oil supply hose guide device 3 is installed.
It is concentrated on the side.

The engagement pin 42 is formed to protrude laterally from the side surface of the tip of the intermediate boom 12.

As shown in FIG. 3, the engagement member 43 is oriented horizontally so that the engagement pin 42 can be engaged with each tip of two protruding plates 44, 44 that protrude from the lower surface of the tip of the intermediate guide 32 in the boom extension direction. U-shaped engagement groove 45,
45 is formed. And this engaging member 43
The engagement groove 45 and the engagement pin 42 automatically engage or disengage depending on the relative positional relationship between the intermediate boom 12 and the intermediate guide 32. That is, when the intermediate boom 12 is moving in the boom retraction direction with respect to the intermediate guide 32 (or in the boom extension direction with respect to the intermediate guide 32 with respect to the intermediate boom 12) (see FIGS. 1 and 2), the intermediate boom 12 The side engagement pin 42 and the engagement groove 45 are engaged, and the auger support 21 is connected to the base boom 11.
When the intermediate boom 12 moves in the boom extension direction with respect to the intermediate guide 32 while being locked and fixed to the side (Fig. 1), the engagement pin 42 remains in the engagement groove 4.
It is now possible to break away from 5.

The locking member 46 is formed into a substantially L-shaped lever having a claw 47 at its tip that can lock the engaging pin 42, and the middle portion near the upper end is connected to the two protruding members of the engaging member 43. It is pivotally mounted between the plates 44, 44 with a pin 48. Also, this lock member 46
is biased by a spring 49 so that the side where the pawl 47 is formed moves upward (toward the lock side with respect to the engagement pin 42). Also, between the pivot portion (pin portion) of this lock member 46 and the claw 47 (L-shaped corner portion),
An outwardly projecting abutment pin 50 is provided.

The operating rod 51 is for operating the locking member 46 in the unlocking direction by pressing the abutting pin 50 in the boom retracting direction, and this operating rod 51 is used to push the tip of the tip guide 33. A connecting member 41 for connecting to the auger support 21 is integrally formed to protrude in the direction of boom contraction. The operating rod 51 is in a state where the telescopic boom 1 is fully contracted as shown in FIG.
The abutting pin 50 of the locking member 46 is pressed against the spring 49 in the boom retracting direction by the tip end face of the locking member 46, thereby releasing the locking member 46. Further, as shown in FIG. 4, when the auger support 21 moves slightly in the boom extension direction together with the top boom 13, the operating rod 51 separates from the abutting pin 50, and the pressing force against the abutting pin 50 increases. It will be canceled. Note that when the telescopic boom 1 is extended, the top boom 13 extends at twice the speed of the intermediate boom 12, so the abutment pin is removed before the engagement pin 42 escapes from the engagement groove 45 of the engagement member 43. 50 is released, and the locking member 46 locks the engagement pin 42 within the engagement groove 45.

Next, the operating method of the oil supply hose support device of the first embodiment will be explained. As shown in FIG. 1, when the boom is fully retracted, the intermediate guide 32
The tip guide 33 is pushed in the boom retracting direction by the engagement pin 42 of No. 2 and the auger support 21 on the top boom 13 side, and the entire oil feed hose guide device 3 is in a fully contracted state. There is. Also, in this state, the operating rod 51 is not connected to the locking member 4.
6 is maintained in an unlocked state. Then, when only the telescopic boom 1 is extended or retracted without using the auger device 2 (the auger support 21 is locked and fixed to the base boom 11 side), the oil supply hose guide device 3 is maintained in the fully retracted state. Moreover, since the lock member 46 is unlocked, the engagement pin 42 can freely move in and out of the engagement groove 45. Also, when using the auger device 2 (when hanging the auger device), the auger support 2
1 is locked and fixed to the top boom 13 side,
When the telescopic boom 1 is extended in this state, the top boom 1
3 is slightly extended, the pressing force on the abutting pin 50 by the operating rod 51 is released, and the locking member 4
6 is locked with the engagement pin 42 inserted into the engagement groove 45 (because the top boom 13 extends at twice the speed of the intermediate boom 12, the engagement pin 42 is locked in the state in which it is inserted into the engagement groove 45). (the claw of the locking member engages with the engagement pin), the intermediate guide 32 is connected to the intermediate boom 12 side and is extended together with the intermediate boom 12. As shown in FIG. 2, when the boom is in the extended state, the oil supply hose 9 is guided by the intermediate guide 32 and the tip guide 33, so that the middle part of the oil supply hose 9 does not hang down. Also, from the boom extended state, the telescopic boom 1
When the front guide 33 is contracted together with the top boom 13, the intermediate guide 32
is contracted together with the intermediate boom 12 by pressing the engagement pin 42 against the bottom of the engagement groove 45 as indicated by the chain line 42' in FIG. When the telescopic boom 1 is about to be fully retracted, the operating rod 51 presses the abutting pin 50 of the lock member 46, and when the boom is fully retracted, it operates to maintain the lock member 46 in the unlocked state.

The second embodiment shown in FIG. 5 shows a modification of the intermediate guide operating mechanism. 72 to the intermediate guide 32
The engagement groove 75 of the engagement member 73 provided on the top surface of the tip of the
A locking member 76 for locking within the spring 7
9 in the unlocking direction, and the locking operation of the locking member 76 is performed using the tip 33a of the tip guide 33. That is, when the oil supply hose guide device 3 is fully retracted (the boom is fully retracted), the side of the lock member 76 where the pawl 77 is formed is urged downward, and the engagement groove 7 is pushed downward.
5 is open, and when the oil supply hose guide device 3 is extended (the boom is extended), the upper surface of the tip 33a of the tip guide 33 presses the lower surface of the locking member 76 on the claw forming side in the initial stage. , thereby maintaining the locking member 76 in the locked position. Note that when the oil feed hose guide device 3 is retracted (the boom is contracted) from the locked state of the lock member 76, the lock member 76 is When the pressing action on the locking member 76 is released, the locking member 76 is automatically unlocked by the spring 79.

In this second embodiment, the other configurations are similar to those of the first embodiment,
Corresponding constituent members are given the same reference numerals and their explanations will be omitted.

Furthermore, in the first and second embodiments described above, the oil supply hose guide device and the intermediate guide operation mechanism are provided together on one side of the telescopic boom, but the oil supply hose guide device and the intermediate guide operation mechanism are , for example, it is also possible to provide them collectively on other surfaces such as the lower or upper surface of the telescopic boom.

(Effect of the invention) The oil supply hose support device of the invention has a base guide 3
1. A telescopic oil hose guide device 3 having an intermediate guide 32 and a tip guide 33 is installed on one side of the telescopic boom 1, and the oil hose guide device 3
Since the intermediate guide operating mechanisms 5 and 70 for detaching or connecting the intermediate guide 32 to the intermediate boom 12 are provided on the same side 1a of the telescopic boom 1 as the oil supply hose guide device 3 installation side, the oil supply The entire hose support device is consolidated on one side of the telescopic boom 1, and the oil supply hose support device becomes compact, and the telescopic boom 1
This has the effect of reducing the number of surfaces on which protruding parts, which tend to get in the way when working on the outer periphery, are formed.

[Brief explanation of the drawing]

Fig. 1 is a side view of a drilling pole erection device with a telescopic boom equipped with an oil hose support device according to the first embodiment of the present invention, and Fig. 2 is a side view of the auger device used in the oil hose support device of Fig. 1. 3 is a view taken in the direction of the − arrow in FIG. 1, FIG. 4 is an explanatory diagram of the operating method of the oil supply hose support device of FIG. 1, and FIG. 5 is a second embodiment of the present invention. Fig. 6 is a side view of a hole-drilling pole-erecting device with a telescopic boom equipped with an oil supply hose support device;
The figure is a - sectional view of FIG. 1...Telescopic boom, 2...Auger device, 3...
Oil feed hose guide device, 5, 70... Intermediate guide operation mechanism, 9... Oil feed hose, 11... Base boom, 12... Intermediate boom, 13... Top boom, 21... Auger support, 31... Base Guide, 32...middle guide, 33...tip guide.

Claims (1)

[Scope of utility model registration request] A telescoping boom 1 formed by telescopically connecting a base boom 11, an intermediate boom 12, and a top boom 13 in sequence; and a hydraulically driven auger device 2 attached to the telescoping boom 1 via an auger support 21.
and furthermore, the auger support 21 can be selectively locked and fixed to the top boom 13 side when the auger device is in use, and to the base boom 11 side when the auger device is not in use. In the above, an oil feed hose guide device 3 is provided, which is a device for guiding the oil feed hose 9 to the auger device 2, and is formed by sequentially connecting a base guide 31, an intermediate guide 32, and a tip portion guide 33 in a telescopic manner. , one side 1a of the telescopic boom 1
The base guide 31 is fixed to the base boom 11 with the side facing in the direction of boom extension and contraction, and the tip guide 33 is fixed to the auger support 21.
and the telescopic boom 1.
When the auger support 21 is locked and fixed to the base boom 11 side on the same surface 1a side where the oil supply hose guide device 3 is installed, the intermediate guide 32 can be detached from the intermediate boom 12. None, the intermediate guide operating mechanism 5, 70 is such that when the auger support 21 is locked and fixed to the top boom 13 side, the intermediate guide 32 can be connected and fixed to the intermediate boom 12 when the boom is extended. An oil supply hose support device for a trench pole erection device with a telescoping boom.