JPH11292491A - Hydraulic piping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hydraulic piping device having a perpendicular hyraulic pipe clamped at an elevation vertically movable with ease. SOLUTION: Among a first bracket 5a, a second bracket 5b and a third bracket 5c provided on a perpendicular base member 2, the first and the second brackets 5a, 5b at an elevation where locking work is difficult to do, have a hydraulic pipe 11 locked to it with a locking type piping clamp 14 in a vertically slidable manner and the third bracket 5c positioned in a lower place where locking work can be easily done is fastened to it with a stationary type piping clamp 13. The lower end of the hydraulic pipe 11 is provided with a moving means 20 including a screw or a tension spring. When the hydraulic piping 11 is to be move downward, it is moved downwards by the moving means 20 by loosening only the stationary type piping clamp 13 for the third bracket 5c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic piping system, and more particularly, to a forklift mast comprising a plurality of piping clamps and hydraulic pipe moving means for locking a hydraulic pipe disposed in a longitudinal direction of a base member. The present invention relates to a hydraulic piping device that is disposed vertically to a hydraulic pipe.

[0002]

2. Description of the Related Art FIG. 11 is a side view of a mast portion of a forklift provided with a conventional hydraulic piping device, and FIG. 12 is a front view thereof. A sheave 3 for a hydraulic rubber hose is provided above a mast (hereinafter, referred to as a base member) 2 attached to a front portion of the vehicle body 1, and a side spreader provided with a hydraulic device (not shown) is provided at a front portion of the base member 2. The device 4 is attached to be able to move up and down. A hydraulic piping device 10a including a hydraulic pipe 11, a hydraulic rubber hose 12, and a fixed piping clamp 13c is attached to a side surface of the base member 2. That is, the first bracket 5a, the second bracket 5b, and the third bracket 5c are fixed to the substantially vertical side surface of the base member 2 at a predetermined interval from above, and a pair of the brackets 5a, 5b, and 5c are provided. Hydraulic pipe 11, 1
1 is fixed by a fixed type piping clamp 13c.
A first hydraulic rubber bose 1 is provided above the hydraulic pipes 11, 11.
The base ends of 2a and 12a are connected, the first hydraulic rubber hose 12a is wrapped around a sheave 3 provided on the upper part of the base member 2, and the front end is connected to a hydraulic device (not shown) of the side spreader device 4. I have. Hydraulic pipe 1
Second hydraulic rubber hoses 12b, 12b
Are connected to a hydraulic source (not shown) of the vehicle body 1. The hydraulic device of the side spreader device 4 is the hydraulic pipe 1
A predetermined operation is performed by receiving a supply of pressure oil from a hydraulic source via the first and first hydraulic rubber hoses 12a and 12b. When the side spreader device 4 rises, the sheave 3 rises by half of the rise amount of the side spreader device 4, and always keeps the first hydraulic rubber hose 12a.
I try not to sag. Brackets 5a, 5b, 5
Among the brackets c, the bracket 5c arranged at the bottom is located at a height that can be reached by humans, that is, at a place where the disengagement work is easy, but the upper brackets 5a and 5b must be on a ladder or the like. It is located at an unreachable height, that is, a place where it is difficult to engage and disengage.

FIG. 13 shows a conventional fixed piping clamp 13c.
It is a drawing of. The piping clamp 13c includes a U bolt 40, a seat 41, a washer 42, and a nut 43. The hydraulic pipe 11 includes a U bolt 40 and a seat 41.
The tip of the U-bolt 40 is inserted into a hole 6 provided in the bracket 5, and a nut 43 is inserted through a washer 42.
And are fixed.

[0004]

However, the above configuration has the following problems. The upper first hydraulic rubber hose 12a has a long length, and is repeatedly hung around the sheave 3 to repeatedly bend and extend. Therefore, the first hydraulic rubber hose 12a may become slack during use. In that case, the hydraulic pipe 11 is moved downward so that the first hydraulic rubber hose 12a
You need to remove the slack. To do so, loosen the nut 43 of the fixed type piping clamp 13c and remove the hydraulic pipe 11
Is manually pulled down by a worker, and when it reaches a predetermined position, the fixed type piping clamp 13c is fastened by the nut 43, and the hydraulic pipe 11 is attached to the bracket 5a of the base member 2,
Fix to 5b and 5c. As described above, since the upper brackets 5a and 5b are located at a height that cannot be reached without getting on the ladder or the like, that is, at a place where it is difficult to engage and disengage, the work of loosening or tightening the nut 43 is performed by the ladder or the like. Work on high places, with risks and difficulties. Also, since the hydraulic pipe is manually pulled down, a large amount of labor is required.

In view of the above problems, the present invention makes it easy to move the position of the hydraulic pipe when adjusting the position of the hydraulic pipe connected to the hydraulic rubber hose by adjusting the extension of the long hydraulic rubber hose during use. Therefore, an object of the present invention is to provide a hydraulic piping device capable of safely adjusting the position.

[0006]

In order to achieve the above object, a first invention of a hydraulic piping device according to the present invention provides a hydraulic pipe having a hydraulic rubber hose connected to at least one end thereof as a base member. In a hydraulic piping device which is disposed in a longitudinal direction and is fixed to a base member by a plurality of piping clamps at predetermined intervals in a longitudinal direction, a plurality of piping clamps are fixed and a locking type piping clamp. At least one which is located in a place where the disengagement work is easy
Attach the hydraulic pipe to the base member using a fixed type pipe clamp, and slide the hydraulic pipe to the base member in the longitudinal direction using the locking type pipe clamp at another place where it is difficult to engage and disengage. It is configured to lock freely.

[0007] According to the above construction, the position of the hydraulic pipe in the longitudinal direction can be moved only by disengaging the fixed-type pipe clamp located at a place where the disengaging operation is easy. Is secure and extremely easy.

In a second aspect based on the configuration of the first aspect, the hydraulic pipe is disposed substantially vertically.

According to the above construction, the pipe clamp at a high place where it is difficult to engage and disengage is slidably engaged with the hydraulic pipe in the vertical direction, and the hydraulic pipe is fixed by the pipe clamp at a low place where it is easy to engage and disengage. Therefore, the operation of moving the hydraulic pipe in the vertical direction becomes easy.

A third aspect of the invention is based on the configuration of the first or second aspect of the invention, wherein a moving means for adjusting a relative position between the hydraulic pipe and the base member is provided between the hydraulic pipe and the base member.

According to the above arrangement, the relative position between the hydraulic pipe and the base member can be adjusted using the moving means.
It is possible to move the hydraulic pipe with less labor.

According to a fourth aspect based on the configuration of the third aspect, the moving means has a screw device for connecting the hydraulic pipe and the base member and moving a relative position between the hydraulic pipe and the base member.

According to the above configuration, the relative position between the hydraulic pipe and the base member can be adjusted by the screw device, and the minute position can be easily adjusted with a small force.

In a fifth aspect based on the configuration of the third aspect, the moving means connects the hydraulic pipe and the base member, and includes a tension spring for urging the relative position between the hydraulic pipe and the base member in a moving direction. Configuration.

According to the above construction, the relative position between the hydraulic pipe and the base member can be moved by the tension spring force.
The operation of moving the hydraulic pipe is easy without requiring any labor.

According to a sixth aspect based on the configuration of the third aspect, the moving means has a weight connected to the hydraulic pipe and biasing the relative position between the hydraulic pipe and the base member in a moving direction.

According to the above configuration, since the position of the hydraulic pipe relative to the base member can be moved by the weight connected to the hydraulic pipe, no labor is required and the operation of moving the hydraulic pipe is easy.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a hydraulic piping system according to the present invention will be described below in detail with reference to FIGS.

FIG. 1 is a side view of a front portion of a forklift equipped with a hydraulic piping device 10 according to the present invention. The same members as those of the related art described with reference to FIG. 11 are denoted by the same reference numerals, description thereof will be omitted, and only different portions will be described. Brackets 5a, 5b, 5c provided on side surfaces of base member 2
A pair of hydraulic pipes 11, 11 are disposed along
The bracket 5a and the second bracket 5b are locked by a locking pipe clamp 14, and the third bracket 5c is fixed by a fixed pipe clamp 13. A moving means 20 is provided at the lower end of the hydraulic pipes 11,11.

FIG. 2 is a drawing of the locking type pipe clamp 14. A spacer 15 is arranged between a pair of hydraulic pipes 11 arranged in parallel with the bracket 5a or 5b, and a holding plate 16a for locking the hydraulic pipes 11 via the spacer 15 is fixed to the bracket 5a by bolts 17. Or 5
b. A predetermined gap S1 is provided between the hydraulic pipe 11 and the holding plate 16a and the bracket 5, and a predetermined gap S2 is provided between the hydraulic pipe 11 and the holding plate 16a and the spacer 15. Predetermined gap S
1, S2 is about 1 to 2 mm. Therefore, the hydraulic pipe 11 is substantially locked at a predetermined position and is slidable in the longitudinal direction.

FIG. 3 shows a fixed type piping clamp 1 of the first embodiment.
3 is a drawing. A pair of hydraulic pipes 11, 11 arranged in parallel with the bracket 5c are sandwiched from above and below by elastic members 18, 18 made of rubber or the like, and a pressing plate 16b having a concave portion 19 at the center portion is bolted via a spacer 15. Then, the hydraulic pipes 11 and 11 are locked to the bracket 5c. At this time, the elastic member 18 is given a predetermined strain, and fixes the hydraulic pipes 11, 11 to the bracket 5c with a strong restraining force.

FIG. 4 is a drawing of the moving means 20 of the first embodiment. At the lower ends of the pair of hydraulic pipes 11, 11, a lower portion of the fixed type pipe clamp 13 which is engaged with the bracket 5c is fixedly connected to a connecting plate 21a protruding to one side in the left-right direction. A screw device 22 is provided between the connecting plate 21a and the bracket 7 fixed to the base member 2 below the projecting portion. That is, the joint 23 having the connecting plate 21a and the bracket 7 having internal threads in opposite directions.
a, 23b are attached by pins 24, 24,
The turnbuckle is formed by connecting a and 23b by screw members 25 having opposite male screws at both ends.

Next, the operation of moving the hydraulic pipe 11 will be described. When the first hydraulic rubber hose 12a shown in FIG. 1 is slack, the bolt 17 of the fixed type piping clamp 13 fastened to the third bracket 5c at the lowest position where the engagement and disengagement work is easy is loosened, and the screw device 22 is removed. By turning the screw member 25, the hydraulic pipes 11 and 11 are moved downward to remove the slack of the first hydraulic rubber hose 12a. As described above, since a predetermined gap is provided between the hydraulic pipe 11 and the locking type pipe clamp 14 provided on the upper first bracket 5a and the second bracket 5b, the third bracket 5c is fixed. The hydraulic pipe 11 can be easily moved only by loosening the mold pipe clamp 13. In addition, the operation is easy because of the screw operation, and fine adjustment of the moving amount is possible. After moving the hydraulic pipe 11 downward by a predetermined amount, the bolt 17 of the fixed type pipe clamp 13 is tightened to fix the hydraulic pipe 11 to the third bracket 5c.

FIG. 5 shows a fixed type piping clamp 1 according to the second embodiment.
It is drawing of 3a. The pair of hydraulic pipes 11, 11 arranged in parallel with the third bracket 5 c is pressed from above by the pressing plate 16 b via the elastic member 18, and the spacer 1
The hydraulic pipe 11 is fastened to the third bracket 5c by tightening the bolt 17 with the bolt 17 interposed therebetween.

FIG. 6 shows a fixed type piping clamp 1 according to the third embodiment.
It is drawing of 3b. A pair of hydraulic pipes 11, 11 arranged in parallel are tightened by a bolt 17 via a holding plate 16a having no concave portion 19 at the center similar to that used for the locking type pipe clamp 14 via an elastic member 18a. To wear. Third
In the case of the embodiment, the distance L between the pair of hydraulic pipes 11, 11 can be made narrower than that of the first and second embodiments.

The fixed piping clamps 13, 13a,
The piping clamp of the portion using 13b may be the conventional piping clamp 13c described with reference to FIG.

FIG. 7 is a drawing of the moving means 20a of the second embodiment. At the lower ends of the pair of hydraulic pipes 11, 11, a lower portion of the fixed type piping clamp 13 which is engaged with the bracket 5c is fixedly connected to a connecting plate 21b projecting to both left and right sides. The tension plates 30, 30 are connected between the brackets 7, 7 fixed to the base member 2 below the projecting portions at both ends of the connection plate 21b.
b is urged downward. The urging force of the tension springs 30, 30 is a force sufficient to remove the slack of the hydraulic rubber hose 12a. When moving the hydraulic pipes 11 and 11 downward, the fixed pipe clamp 13 is loosened to
1 and 11 can move downward by the force of the tension springs 30 and 30 to remove the slack of the hydraulic rubber hose 12a.
After the hydraulic pipes 11 have moved by a predetermined amount, the hydraulic pipes 11 are fixed by fixed-type piping clamps 13.

FIG. 8 is a drawing of the moving means 20b of the third embodiment. At the lower ends of the pair of hydraulic pipes 11, 11, the lower part of the fixed type piping clamp 13 which is engaged with the bracket 5c is fixedly connected to the connecting plate 21c in the left-right direction, and the central part and the lower base member are connected. 2 is connected to the bracket 7 fixed by the tension spring 30 to constantly urge the connecting plate 21c downward. The operation is the same as that of the moving means 20a of the second embodiment, and the description is omitted.

FIG. 9 is a drawing of the moving means 20c of the fourth embodiment. At the lower ends of the pair of hydraulic pipes 11, 11, the lower portion of the fixed type piping clamp 13 which is engaged with the bracket 5c is connected by connecting a connecting plate 21c in the left-right direction, and the weight 31 is pinned at the center thereof. Suspended by 32,
The connection plate 21c is always urged downward. Weight 31
Is made of steel, cast iron, lead, concrete or the like, and its weight is sufficient to remove the slack of the hydraulic rubber hose 12a. When the hydraulic pipes 11 and 11 are moved downward, when the fixed type piping clamp 13 is loosened, the hydraulic pipes 11 and 11 are moved downward by the force of the weight 31 and the slack of the hydraulic rubber hose 12a is eliminated. Hydraulic pipe 1
After a predetermined amount has been moved by the fixed type pipe clamp 13,
Fix with.

FIG. 10 is a drawing of the moving means 20d of the fifth embodiment. The same members as those of the fourth embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described. A steady pipe 33 for the weight 31 surrounding the weight 31 with a predetermined gap is provided below the weight 31 and fixed to the base member 2. This prevents the weight 31 from moving during movement.

[Brief description of the drawings]

FIG. 1 is a side view of a mast section of a forklift equipped with a hydraulic piping device of the present invention.

FIG. 2 is a drawing of a locking type piping clamp of the hydraulic piping device of the present invention.

FIG. 3 is a drawing of a fixed type piping clamp of the first embodiment of the hydraulic piping device of the present invention.

FIG. 4 is a drawing of the moving means of the first embodiment of the hydraulic piping device of the present invention.

FIG. 5 is a drawing of a fixed-type piping clamp according to a second embodiment of the present invention.

FIG. 6 is a drawing of a fixed-type piping clamp according to a third embodiment of the present invention.

FIG. 7 is a drawing of moving means according to a second embodiment of the present invention.

FIG. 8 is a drawing of a moving means according to a third embodiment of the present invention.

FIG. 9 is a view of a moving means according to a fourth embodiment of the present invention.

FIG. 10 is a drawing of a moving means according to a fifth embodiment of the present invention.

FIG. 11 is a side view of a mast section of a forklift equipped with a conventional hydraulic piping device.

FIG. 12 is a front view of a mast section of a forklift equipped with a conventional hydraulic piping device.

FIG. 13 is a drawing of a conventional fixed piping clamp.

[Explanation of symbols]

 2 Base member 5a First bracket 5b Second bracket 5c Third bracket 10 Hydraulic piping device 11 Hydraulic pipe 12a First hydraulic rubber hose 12b Second hydraulic rubber hose 13, 13a, 13b Fixed piping clamp 14 Locking piping clamp 15 Spacer 16a , 16b press plate 18 elastic member 19 concave portion 20, 20a, 20b, 20c, 20d moving means 21a, 21b, 21c connecting plate 22 screw device 23a, 23b joint 24, 32 pin 25 screw member 30 tension spring 31 weight 33 pipe

Claims (6)

[Claims] 1. A hydraulic pipe (11) having a hydraulic rubber hose connected to at least one end thereof is disposed in a longitudinal direction on a base member (2), and a plurality of piping clamps are provided at predetermined intervals in the longitudinal direction. ), A plurality of pipe clamps are constituted by a fixed type pipe clamp (13) and a locking type pipe clamp (14), and at least one Fixed piping clamp (1
Using 3), fix the hydraulic pipe (11) to the base member (2),
The hydraulic pipe (11) is slidably locked in the longitudinal direction to the base member (2) by using a locking type pipe clamp (14) at another place where the engagement work is difficult. Hydraulic plumbing equipment. 2. The hydraulic piping device according to claim 1, wherein
A hydraulic piping device, wherein the hydraulic pipe (11) is disposed substantially vertically. 3. A moving means (20) provided between the hydraulic pipe (11) and the base member (2) for adjusting the relative position between the hydraulic pipe (11) and the base member (2). Or the hydraulic piping device according to 2. 4. The hydraulic piping device according to claim 3, wherein
The moving means (20) has a screw device (22) for connecting the hydraulic pipe (11) and the base member (2) and moving a relative position between the hydraulic pipe (11) and the base member (2). Features hydraulic piping equipment. 5. The hydraulic piping device according to claim 3, wherein
The moving means (20a, 20b) includes a hydraulic pipe (11) and a base member (2).
And a tension spring (30) for urging the relative position between the hydraulic pipe (11) and the base member (2) in the moving direction. 6. The hydraulic piping device according to claim 3, wherein
The moving means (20c, 20d) is characterized by having a weight (31) connected to the hydraulic pipe (11) and biasing the relative position between the hydraulic pipe (11) and the base member (2) in a moving direction. And hydraulic piping equipment.