JP2565184Y2 - Hydraulic jack for turnout - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in the technical field of a turnout (switching device) of a railway line, and is used specifically for inspecting a tong rail of a turnout. And a suitable hydraulic jack.

[0002]

2. Description of the Related Art For example, in the case of a general left-hand swing type shown in FIG. 1, a branching device which divides one track into two on a railway line is entirely switched by a basic rail A and a switch rod S. And a cross section formed by a main rail M, a crossing Z and a guard rail G, and in particular, a circular section shown by a virtual line. (Point rear end portion) is configured as shown in FIG. 2 and FIG. 3 which is an enlarged cross-sectional view taken along line XX.

2 and 3, H is a sleeper, P is a branch seam fixed on the sleepers H, H by nails Pa... B is a tongue rail T and a lead rail connected in the longitudinal direction. R, a spacing member interposed between the basic rail A,
E is a stopper for fixing the lead rail R to the branch seam plate P; C ... is a rail press for fixing the basic rail A to the branch seam plate P; D ... is a tightening bolt for mounting the spacing member B; Is a spacer for bolt D, N is a nut,
An and Tn denote insertion holes for bolts D provided in the rails A and T, respectively.

In the branching device constructed as described above, the bottom surface of the tongue rail T which repeats the switching operation wears out quickly, and if the wear is left as it is, a step is generated between the basic rail A and the tongue rail T, and the point tip The tongue rail T needs to be inspected periodically because there is a risk of causing the vehicle to sway at the part. In the inspection, first, the tightening bolts D ...
Then, the tong rail T is moved in a wider direction (in a direction away from the basic rail A) by hitting the tong rail T with a hammer or the like, so that the spacing member B is taken out from between the rails A and T, and the tong rail T is suspended from the rail. He lifted it using tools such as an upper machine or a mechanical jack and checked the bottom. After the inspection, the tong rail T is lowered again, the tong rail T is hit with a hammer or the like with the spacing member B interposed between the rails A and T, and the tong rail T is moved to the narrow side. ... had been tightened to finish the work.

[0005]

However, since the above-mentioned inspection of the tong rail T is generally performed at night, the sound of hitting the tong rail T with a hammer or the like is very loud, and a rail lifting machine or a mechanical jack is used. The ratchet sound when using the Tongrail and the impact sound when the tong rail T was lowered to the original position were also loud, and these sounds became noise pollution, and many local residents complained.

Further, when the tong rail T is moved by hitting with a hammer or the like, there are cases where high precision parts are erroneously hit and deformed or damaged, and work is performed to eliminate such failures. As a result of careful progress, it takes time to move the tongue rail T and remove the spacers B. Further, since all the tools including the rail hoisting machine are large and heavy, handling of them is extremely difficult. However, there is also a problem that the operation is complicated and requires a long time because the operation is complicated.

[0007] Therefore, the technical problem of the present invention is that the inspection of the tong rail can be performed quietly, without noise, easily,
It is an object of the present invention to surely solve the problem of late-night noise and the problems of deformation and breakage of various parts, and to reduce work content and work time.

[0008]

Means taken by the present invention to solve the above technical problems are as follows. (1) The tongue rail of the switch is attached to the basic rails on both sides of the lower end of the cylinder body, which is configured to extend and retract the piston rod in the axial direction by the hydraulic pressure sent from the manual hydraulic pump attached to the upper end. The upper claw plate used when pushing and spreading horizontally, and the lower claw plate used when pushing up this tong rail are formed symmetrically protruding with a step vertically and at the lower end of the piston rod. Attach the base plate.

(2) A manually operated hydraulic pump is rotatably mounted on the upper end of the cylinder body via a joint.

[0010]

The above means operates as follows. The above (1)
According to the means described in the above, after loosening each tightening bolt, the base plate of the piston rod is applied to the inner surface of the tong rail,
Also, if the upper claw plate provided on the cylinder body is applied to the inner surface of the basic rail and hydraulic pressure is supplied from the hydraulic pump to the cylinder body by manual operation, the base plate of the piston rod projecting by this hydraulic pressure spreads the tong rail. Since the tongue rail is pushed in the direction, the tongue rail can be moved gently without hitting the tongue rail with a hammer or the like, and the spacing member can be easily taken out. Also, when raising the tongue rail that has been moved in this way, insert the lower claw plate provided on the cylinder body under the tongue rail, and then manually supply hydraulic pressure from the hydraulic pump to the cylinder body to remove the piston rod. If it protrudes, the tong rail can be raised quietly without using tools such as a rail hoisting machine, etc., so that the bottom of the tong rail can be checked. Also when lowering, it is possible to gently lower by removing the supplied hydraulic pressure.

According to the means described in the above (2), if the manual hydraulic pump is rotated so as to overlap the cylinder body at the joint, the entire jack is folded compactly to carry or store the jack. Can be easily performed. As described above, the technical problems described above can be solved by the above means, and the problems of the conventional technology can be solved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the hydraulic jack for a switch according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 4 is a perspective view showing the entire hydraulic jack for a branching device according to the present invention. In the drawing, reference numeral 1 denotes a cylinder body having a small overall length L (see FIG. 6) of, for example, about 250 mm to 300 mm. Reference numeral 2 denotes a handle handle attached to the upper end 1a. Reference numeral 3 denotes an attachment cylinder also attached to the lower end of the cylinder body 1. 3a and 3b are symmetrically protruded on both side surfaces of the attachment cylinder 3 with a vertical step. The upper claw plate and the lower claw plate thus formed are shown. Reference numeral 4 denotes a piston rod, and reference numeral 5 denotes a base plate attached to the lower end of the piston rod.

In FIG. 4, reference numeral 6 generally designates a manually operated oil tank having a cylindrical oil tank 6a, an operating lever 6b for operating a pump, a pump lever 6c, and a release valve 6f. The hydraulic pump 6 is rotatably mounted on the upper end 1a of the cylinder body 1 via a joint 1Y (sebel joint), and operates the operation lever 6b to supply hydraulic pressure to the inside of the cylinder body 1. And the hydraulic pressure can be released by opening the release valve 6f.

FIG. 5 shows the internal structure of the cylinder body 1 and the manual hydraulic pump 6 described above.
1S is a cylinder chamber, 4a is a piston, 1X is a return spring for the piston 4a, 1T is a cylinder cover,
Ta indicates a seal, the cylinder chamber 1S is a passage 1Sa,
1Sb leads to the internal passage 1Ya of the joint 1Y. Reference numeral 6d denotes a connection hole recessed in the side surface of the manual hydraulic pump 6, and 6e denotes a pipe leading to the connection hole 6d. In the connection hole 6d, the joint 1Y of the cylinder body 1 described above has both screws ( (Not shown) is rotatably and detachably connected by screwing.

According to the cylinder body 1 and the manual hydraulic pump 6 configured as described above, the hydraulic pressure supplied from the hydraulic pump 6 side through the pipe 6e by the compressing action based on the rotation operation of the operating lever 6b, Passages 1Ya, 1S
b and 1Sa, the piston 4a is pushed to push the piston 4a out of the cylinder body 1, and the release valve 6f is opened to release the compressed air in the oil tank 6a. Due to the return operation of the piston 4a, the hydraulic pressure in the cylinder chamber 1S is increased by the passages 1Sa, 1Sb, 1Y.
The piston rod 4 can be pulled into the cylinder main body 1 because it is sent back to the oil tank 6a through the pipe a and the pipe 6e.

Since the hydraulic jack for a branching device according to the present invention has the above-described configuration, it can be used when stored or carried.
When the hydraulic pump 6 is turned along the cylinder body 1 as shown in FIG. 1, the whole can be compactly folded and can be easily carried by having the handle 2. .

When the tong rail T is inspected, the nut N and the spacer Na of each tightening bolt D are removed as shown in FIG. When the operating lever 6b of the hydraulic pump 6 is rotated by applying the upper pawl plate 3a to the inside of the basic rail A, the hydraulic pressure is supplied and the piston rod 4 protrudes. From the rails A, as shown in FIG.
It can be removed from between T.

Next, after the hydraulic pressure of the hydraulic pump 6 is released and the piston rod 4 is pulled into the cylinder body, the lower pawl plate 3b is inserted into the bottom surface Ta of the tongue rail T which has been moved. When the operation lever 6b is rotated again, the tongue rail T can be lifted by projecting the piston rod 4 as shown in FIG. 9, so that the wear condition of the bottom surface Ta can be checked, and the inspection can be performed. After the end, the tongue rail T can be quietly lowered to the original position by releasing the hydraulic pressure of the hydraulic pump 6.

[0019]

As described above, according to the hydraulic jack for a switch according to the present invention, the tongue rail is moved laterally to take out the spacing material without hitting with a hammer or the like, and a lifting machine or a mechanical type is used. Even without using large tools such as jacks, the tongue rails that have been moved laterally can be lifted to check the degree of wear on the bottom surface, etc. After inspection, the tongs can be lowered back to their original positions. Inspection of the rail can be performed quietly without making a loud noise, and since no hammer is used, there is no risk of damaging high-precision parts, and night inspection work is safe and
It can be advanced reliably, and combined with the fact that the whole is folded compactly for easy storage and carrying, it is extremely innovative as a jack for turnout, and
It is highly practical.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating the structure of a railway track branching device.

FIG. 2 is an enlarged plan view showing a detailed structure of a rear portion of a point indicated by a circle of a virtual line in FIG. 1;

FIG. 3 is an enlarged sectional view taken along line XX in FIG. 2;

FIG. 4 is a perspective view showing the entire hydraulic jack for a switch according to the present invention.

FIG. 5 is a partial cross-sectional front view showing the internal structure of the cylinder body and the hydraulic pump constituting the present invention.

FIG. 6 is a front view showing a state in which the hydraulic jack for a switch according to the present invention is compactly folded.

FIG. 7 is a partial cross-sectional front view showing a state in which the tongue rail is laterally moved using the hydraulic jack for a branch device according to the present invention.

FIG. 8 is a front sectional view showing a state in which a spacer is removed.

FIG. 9 is a partial cross-sectional front view showing a state in which the tong rail is lifted by using the hydraulic jack for a branch device according to the present invention.

[Explanation of symbols]

 A Basic rail B Spacing material D Tightening bolt T Tong rail Ta Bottom surface 1 Cylinder body 1Y Joint 3a Upper pawl plate 3b Lower pawl plate 4 Piston rod 5 Base plate 6 Manual hydraulic pump 6a Oil tank 6b Operating lever

Claims (2)

(57) [Scope of request for utility model registration] 1. A tongue rail of a branching device is provided on both side surfaces of a lower end portion of a cylinder body configured to extend and retract an axial direction of a piston rod by hydraulic pressure sent from a manual hydraulic pump attached to an upper end portion. An upper claw plate used to spread the base rail in the lateral direction and a lower claw plate used to push up the tongue rail are formed so as to be left and right symmetrically with a vertical step, and the lower end of the piston rod is formed. Hydraulic jack for switchgear, characterized in that a base plate is attached to the part. 2. The hydraulic jack according to claim 1, wherein a manual hydraulic pump is rotatably mounted on an upper end of the cylinder body via a joint.