JP3113814U - Dog nail driving jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dog nail driving jig capable of reliably driving a dog nail into a sleeper in a short time without being a skilled worker.
A dog nail driving tool 1 used to fix a rail 7 to a sleeper 6 by striking a dog nail 5 with a hitting body 11 of a driving device 10 and driving the dog nail 5 into the sleeper 6. A cylindrical metal guide tube 2 fitted to the dog nail 5 and a metal plate placed on the upper surface of the sleeper 6 and extending in the length direction of the sleeper 6, with the guide tube 2 standing up and down in a posture , And the guide cylinder 2 is fixed to the four-foot presser plate so that the lower end of the guide cylinder 2 is located above the upper surface of the sleeper 6.
[Selection] Figure 1

Description

  The present invention relates to a dog nail driving jig for fixing a rail to sleepers constituting a railway track.

  Dog nails are used as means for fixing railroad rails to, for example, wooden sleepers constituting the railroad track, and a hole for inserting the tip of the dog nail is formed in advance at a predetermined position of the sleepers.

  As a device for driving a dog nail into a sleeper, a nail driving device configured to drive a striking body capable of reciprocating in the longitudinal direction using a power source such as compressed air or an internal combustion engine and to drive the dog nail with an impact force when the striking body pops out. A device has been proposed.

  In such a dog nail driving device, the head of the dog nail is formed in a hook shape, and the upper surface thereof is not flat but formed in an inclined surface, and is also curved in a convex shape. When hitting the head of the dog nail with a strong impact force, the hitting body slides from the head of the dog nail and the dog nail cannot be driven well. Therefore, various ideas have been made to drive the dog nail securely.

  As a driving device for a dog nail having such a contrivance, for example, an outer casing formed in a cylindrical shape provided with a striking body driving unit using compressed air as a power source, and disposed in the outer casing so as to be axially movable. And a cylindrical guide cylinder that is inserted into the distal end portion of the outer casing so as to be axially movable and biased so as to protrude from the distal end portion of the outer casing by a coil spring for extrusion, have. The tip of the impacting body extends outward from the tip of the outer casing (see Japanese Utility Model Laid-Open No. 4-1155581).

  The dog nail driving operation by the dog nail driving device constructed in this way is as follows. First, the operator inserts the dog nail up and down in the hole in the sleeper, and then uses the dog nail driving device to hold the guide tube. Fit from the top of the dog nail. When the guide tube is inserted into the dog nail so that the dog nail is inserted, it is confirmed that the tip surface of the hitting body of the dog nail driving device abuts on the head of the dog nail, and the dog nail driving operation is performed on the dog nail driving device. Since the guide is guided by the guide tube, the head of the dog nail can be hit without the tip of the hitting body being detached.

  As the dog nail is driven, the lower end of the guide cylinder comes into contact with the sleeper, and when the dog nail is further driven, the dog nail driving device lowers, but the guide cylinder enters the outer casing against the spring force of the coil spring and is driven. The guide tube can guide the dog nail until the operation is completed.

  In order to shorten the driving time of the dog nail driving device, a large impact force is repeatedly applied to the dog nail by the hitting body, and a large reaction is applied to the driving device itself. For this reason, the driving device is swung not only in the vertical direction but also in the horizontal direction, and the guide tube that guides the dog nail is also swung in the horizontal direction because it is integrated with the driving device. When the guide tube is swung in the horizontal direction integrally with the driving device, the guiding nail is staggered, and the dog nail cannot be driven straight. In particular, in order to suppress the recoil of the driving device, it is necessary to adjust the driving device so that it does not shift in the horizontal direction while applying force downward, and experience and physical strength are required.

  The purpose of the present invention was made in view of such a conventional problem, and can make the impacting body of the driving device reliably hit the head of the dog nail, even in a short time even if it is not a skilled worker. An object of the present invention is to provide a dog nail driving jig capable of reliably driving a dog nail into a sleeper.

  According to a first configuration of a dog nail driving jig for realizing the object of the present invention, the dog nail is hit by a hitting body of a driving device and driven into a sleeper, and a rail is fixed to the sleeper. A jig for driving a dog nail used at the time, a cylindrical metal guide tube fitted into the dog nail inserted into the sleeper, and a metal plate placed on the upper surface of the sleeper and extending in the length direction of the sleeper And a foot press plate whose tip is fixed to the guide tube in an upright position with the guide tube standing up and down, and the lower end of the guide tube is above the upper surface of the sleeper It is fixed to the said foot press plate so that it may be located in.

  According to a second configuration of a dog nail driving jig for realizing the object of the present invention, as described in claim 2, in the first configuration described above, the foot press plate is formed in a substantially L-shaped side surface, The guide tube is fixed to a portion extending above the foot press plate.

  According to a third configuration of a dog nail driving tool for realizing the object of the present invention, as in claim 3, in the first configuration described above, the foot press plate is formed in a substantially crank shape on the side surface, The guide tube is fixed to a tip portion floating on the surface.

  According to the present invention, the guide tube is inserted into the dog nail while the operator steps on the foot press plate of the jig and presses it on the sleeper, so the guide tube that guides the dog nail is integrated with the dog nail driving device. When the driving device is moved in the vertical and horizontal directions due to the operation of the driving device, the impact is not transmitted to the guide tube, and the impacting body of the driving device is detached from the head of the dog nail. Strike without fail. For this reason, even if it is not a skilled worker, a dog nail can be driven into a sleeper in a short time.

First Embodiment FIG. 1 shows a first embodiment of the present invention.

  FIG. 1A is a drawing tool for driving a dog nail according to the present embodiment, FIG. 1B is a diagram showing a use state, and FIG. 3 is a diagram showing the appearance of a dog nail driving device.

  In FIG. 1A, a dog nail driving jig (hereinafter abbreviated as a jig) 1 according to the present embodiment is a guide cylinder 2 made of a metal cylindrical pipe or a guide cylinder made of a metal square pipe. A foot press plate 4 having a substantially L-shaped side surface formed of a flat metal plate is fixed to the lower end of 3 by welding. Hereinafter, the present embodiment will be described by taking as an example the case where a guide tube 2 made of a cylindrical pipe is used.

  The foot retainer plate 4 of the present embodiment has a short leg portion 4a that extends in the vertical direction and has an upper end welded to the outer periphery of the lower end of the guide tube 2 made of a cylindrical pipe, and is welded or bent to the lower end of the short leg portion 4a. As a result, the foot press portion 4b extends in a direction orthogonal to the axial direction of the guide tube 2. Therefore, the jig 1 has a structure in which the guide cylinder 2 is lifted upward by the height of the short leg portion 4a of the foot retainer plate 4 with the foot retainer portion 4b as a reference.

  Further, the cylindrical guide tube 2 has an inner diameter that is slightly larger than the major axis of the head of the dog nail and can be freely fitted into the dog nail. I am trying not to. Further, the cylindrical guide tube 2 has the dog nail head lower than the upper end of the guide tube 2 when the guide tube 2 is fitted into the dog nail in a state where the dog nail is only inserted into the hole of the sleeper. The striking body of the dog nail driving device is allowed to enter the guide tube 2 sufficiently.

  In the present embodiment, the guide cylinder 2 is formed using a pipe member of 50 (mm) φ and has a length of 250 mm. Further, the foot retainer 4b has a length of 350 mm, and the short leg 4a and the foot retainer 4b have substantially the same width as the outer diameter of the guide tube 2.

  Next, a dog nail driving method using the jig 1 will be described with reference to FIG. An example of a driving device used for driving a dog nail is shown in FIG.

  The driving device 10 shown in FIG. 3 uses an air breaker such as a rock drill using compressed air, and uses a flat surface by cutting a sharp tip of a chisel as an impacting body 11, not shown. The compressor and the air hose 12 are connected. When the operator grasps the handle 13 fixed to the outer case 14 of the apparatus main body, presses the tip of the impacting body 11 against the head of the dog nail and operates an operation lever (not shown), the impacting body 11 is reciprocated by the compressed air. The dog nail can be driven into the sleepers with a large impact force.

  In FIG. 1B, the dog nail 5 is inserted into the insertion hole 6 a that determines the driving position of the dog nail 5 in the sleeper 6 in a state where the rail 7 is placed on the sleeper 6. Next, the guide tube 2 is fitted into the dog nail 5 while holding the jig 1 in the hand. At that time, the foot press plate portion 4 b of the jig 1 is placed on the upper surface of the sleeper 6 so as to extend on the opposite side of the rail 7. At this time, since the guide tube 2 is lifted upward, interference with the bottom 7a of the rail 7 is avoided, and the guide tube 2 can be positioned at a predetermined position.

  When the guide tube 2 of the jig 1 is fitted into the dog nail 5, the operator stably holds the jig 1 without wobbling by stepping on the foot press plate portion 4b placed on the upper surface of the sleeper 6. Then, the operator holds the driving device 10 in his hand and inserts the impacting body 11 into the guide tube 2 from above. Operate.

  By the operation of the driving device 10, the driving device 10 is swung not only in the vertical direction but also in the horizontal direction as described above, but the jig 1 is a separate member from the driving device 10 and is not connected. 1 is not shaken integrally with the driving device 10. For this reason, the dog nail 5 is not shaken by the guide cylinder 2 but is guided by the guide cylinder 2 and driven into the sleepers 6. At that time, since the periphery of the head of the dog nail 5 is guarded by the guide tube 2, the tip of the impacting body 11 is also prevented from being detached from the head of the dog nail 5.

  In this way, when driving the dog nail into the sleeper using the driving device, using the jig according to the present embodiment, it was possible to drive the dog nail in a short time without failure even if it was not a skilled worker. .

Second Embodiment FIG. 2 shows a second embodiment of the present invention. FIG. 2A is a dog nail driving jig according to the present embodiment, and FIG.

  The jig 8 according to the present embodiment has a configuration in which a flat foot press plate 9 is fixed to a guide tube 2 formed in a cylindrical shape by welding to form a substantially L-shaped side surface as a whole. The difference from the first embodiment shown in FIG. 1 is that the foot retainer plate 9 is not provided with a short leg portion, but is bent at two points so as to provide an inclined portion 9a in the length direction, and a bent tip portion 9b. The guide tube 2 is welded to the tip of the wire. By lifting the guide cylinder 2 upward by the height of the inclined portion 9a, as shown in FIG. 2B, the jig 8 is placed at a predetermined position on the sleeper 6 as in the first embodiment. In such a state, it does not interfere with the bottom 7a of the rail 7.

  Further, when a tie plate (not shown) is disposed between the rail 7 and the sleeper 6, the thickness of the tie plate interferes with the guide tube 2 and the foot press plate 9, so that the foot is provided by providing the inclined portion 9a. The tip of the presser plate 9 is floated to avoid interference with the tie plate.

  In addition, since the procedure of the driving | operation operation | work of the dog nail 5 is the same as that of the case where the jig 1 of 1st Embodiment is used, the description is abbreviate | omitted.

  Further, in the present embodiment, the inclined portion 9a is provided in the middle of the length of the foot retainer plate 9 in order to float the tip end portion of the foot retainer plate 9 upward, but the crank shape is also possible. .

Third Embodiment In each of the above-described embodiments, the guide tube 2 has been described as an example of a cylindrical shape. However, in the second embodiment, the square tube shown in the first embodiment is described. May be used, or may be oval, triangular or partially cut out with slits for guiding the tip of the head of the dog nail formed in the vertical direction of the guide tube. .

The jig for driving a dog nail of a 1st embodiment, (b) is a figure showing a use state. The jig for driving a dog nail of a 2nd embodiment, (b) is a figure showing a use state. The figure which shows the external appearance of the driving device of a dog nail.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 8 Dog nail driving jig 2, 3 Guide cylinder 4, 9 Foot clamp plate 5 Dog nail 6 Sleeper 7 Rail 10 Driving device 11 Impacting body

Claims (3)

A dog nail driving jig used for hitting a dog nail with a hitting body of a driving device and driving it into a sleeper, and fixing a rail to the sleeper,
A cylindrical metal guide tube fitted into a dog nail inserted into the sleeper;
A foot press plate that is placed on the upper surface of the sleeper and is made of a metal plate that extends in the length direction of the sleeper, the guide tube is erected in the vertical direction, and the tip is fixed to the guide tube in a posture;
And the guide tube is fixed to the foot press plate so that the lower end of the guide tube is positioned above the upper surface of the sleeper.   2. The dog nail driving jig according to claim 1, wherein the foot retainer plate is formed in a substantially L-shaped side surface, and the guide tube is fixed to a portion extending upward of the foot retainer plate.   2. The dog nail driving jig according to claim 1, wherein the foot press plate is formed in a substantially crank shape on a side surface, and the guide tube is fixed to a tip portion floating upward.

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