JP4359256B2 - Switch adjuster - Google Patents

Description

  The present invention relates to a switch adjuster for a convertible lock device that converts and locks a railway branching device.

  FIG. 5 shows an example of a convertible lock device. As shown in FIG. 5, the conversion device that converts the tongrel 1 of the railroad branching device to a fixed position or an upside down and closes the tongrel to the basic rail 2 is provided with the conversion of the tongrel and the close adjustment to the basic rail. For the sake of simplicity, a switch adjuster SA is provided between the center of a rolling bar (tie bar) 3 that connects the two Tongrel 1 and the operation lever 4 of the electric rolling machine 104.

  As shown in FIGS. 6 to 8, the switch adjuster SA has a threaded portion 5 a at the other end of the rod 5 pivotally attached at one end to the operating rod 4, and is attached to a sleeve 6 a of the bracket 6 fixed to the rod 3. The first nut 7 and the second nut 8 are threadedly engaged with the thread portions on both sides of the sleeve, and the localization side contact degree and the reverse side contact degree are adjusted by changing the tightening position of the nut. It is configured. A U-shaped fixing bracket 9 that is fitted to the nuts 7 and 8 after adjusting the fastening position and prevents unnecessary rotation is welded to the mounting bracket 10, and the mounting bracket 10 is attached to the bracket 6, as an example, the center of both. Are fixed through the split pins 12 to the ends of the shafts 11 penetrating through the holes 10a and 6b provided in the holes 10a and 6b.

  The tongue rail 1 expands and contracts due to solar heat and the like. In addition, the tongrel may vibrate greatly when passing through the vehicle. In order to prevent breakage of the tip 3 due to the expansion and contraction and vibration of the Tongrel, the tip is composed of a plurality of long members that are pivotably connected by a connecting plate. Further, since the rod 5 of the switch adjuster SA has a considerable weight, the axis of the rod and the axis of the sleeve 6a of the bracket may be in a state of intersecting without being in line with each other. In this case, if the bracket 6, the rod 5, and the nuts 7 and 8 on both sides are assembled precisely, the bracket may be broken in many cases. That is, there is a possibility that the conversion is not performed normally.

In order to prevent this, conventionally, as shown in FIGS. 8 and 9, a predetermined gap (usually, between the bracket 6 and at least one of the nuts 7, 8 on both sides is defined according to regulations. (About 1 to 2 cm) is provided to provide a space (margin). However, when adjusting the close contact of the tongue rail with the basic rail by moving the nut, the close contact state between the nut and the sleeve of the bracket must be precise at the final stage of the close contact adjustment. That is, the switch adjuster has a special situation that the assembly needs to be relatively gentle, and at the same time the setting of the nut fastening position in the final stage of the tightness adjustment must be made precisely.
nothing special

  On the other hand, since the close-adjustment nut used in the conventional switch adjuster is composed only of a lump-shaped nut body, when the rod axis is not aligned with the axis of the bracket sleeve, When the threaded portion 5a of the bracket 5 moves within the sleeve, the end of the sleeve 6a of the bracket 6 is locked to the threaded portion so that it cannot quickly reach the predetermined conversion position. Since there is a problem such as rapid wear, as shown in FIGS. 8 and 9, a sleeve 7 a to be inserted into the sleeve 6 a of the bracket 6 is integrally provided on one nut 7. The nut 7 with a sleeve has an advantage of enabling smooth movement by reducing locking and friction in the sleeve of the bracket by the screw portion 5 a of the rod 5.

  However, since the other nut 8 is still composed only of a massive nut body, when the axis of the rod 5 and the axis of the sleeve 6a are in an inconsistent state, a part of the longitudinal end surface of the sleeve 6a In spite of the unstable state of point contact with the flat surface of the nut 8, the adjustment operation may be terminated assuming that the tongrel and the basic rail are in close contact. If left in such an unstable state, the unstable contact state between the nut 8 and the sleeve 6a is corrected to a stable state due to vibration at the time of passing the next train. That is, the entire longitudinal end surface of the sleeve 6 a moves in a direction in which the sleeve 6 a is in surface contact with the flat surface of the nut 8. Accordingly, the degree of adhesion of the converted Tongrel to the basic rail is reduced. As described above, conventionally, even if the adjustment operation is performed once, it is not a precise final adjustment. Therefore, it is necessary to perform adjustment again or again later, so that maintenance is not easy.

  The present invention has been made in view of the above circumstances, and the problem to be solved is to provide a switch adjuster that can be precisely adjusted by a single adjustment operation and does not need to be adjusted again later. There is to do.

  In order to solve the above problem, the invention of claim 1 is a bracket fixed to a rolling rod, and a screw portion provided at one end of which is pivotally attached to the operation of the electric rolling machine and provided at the other end. A switch adjuster comprising: a rod inserted through the bracket sleeve; and a first nut and a second nut for tightness adjustment screwed to the threaded portion of the rod on both sides of the bracket sleeve; Is provided with a sleeve which is inserted into the sleeve of the bracket and prevents the sleeve from coming into contact with the threaded portion of the rod, and the second nut is inserted into the sleeve of the bracket and is inserted into the second nut. A sleeve that guides the sleeve in the direction of the sleeve of the bracket is provided, and a ring-shaped contact surface that is a part of a spherical surface or a conical surface is provided on the outer periphery of the proximal end of the sleeve. It is characterized in.

  With the above configuration, when the rod is moved in the direction opposite to the second nut with respect to the bracket during the conversion operation, the second nut is guided to the sleeve because the sleeve of the second nut is inserted into the sleeve of the bracket. Be sure to approach the sleeve of the bracket. When the second nut approaches the sleeve of the bracket, the ring-shaped contact surface formed on the outer periphery of the proximal end of the sleeve makes an annular surface contact with the longitudinal end surface of the sleeve of the bracket. Regardless of alignment or misalignment of the axis of the sleeve of the bracket, a constant and stable contact state can always be obtained. Therefore, precise adhesion adjustment can be performed.

  It is preferable to provide a spherical surface or a part of a conical surface also on the outer periphery of the base end of the sleeve of the first nut (Claim 2), and it is even better if a protrusion having an arc-shaped cross section is provided on the outer periphery of the distal end of the first nut Item 3), it is further preferable to provide convex ridges each having an arc cross section on the outer periphery of the tip of the first nut and the outer periphery of the tip of the second nut.

  According to the first aspect of the present invention, when the rod is moved during the conversion operation, the second nut is guided to the sleeve and reliably approaches the sleeve of the bracket, and the ring formed on the outer periphery of the proximal end portion of the sleeve. Since the abutment surface contacts the longitudinal end surface of the bracket sleeve, a stable contact state is always obtained regardless of the alignment state of the axis of the rod and the axis of the sleeve of the bracket. Therefore, precise adhesion adjustment can be performed. Therefore, it is possible to meet a special requirement that the assembly must be gentle and the close contact adjustment must be performed precisely.

  According to the second aspect of the present invention, it is possible to precisely adjust the contact between the localization side and the opposite side.

  According to invention of Claim 3, the sleeve of a 1st nut can move smoothly within the sleeve of a bracket, and abrasion of sleeves is prevented.

  According to the invention of claim 4, the sleeve of the first nut and the sleeve of the second nut can both move smoothly within the sleeve of the bracket, and wear between the sleeves is prevented.

Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 3.
FIG. 1 is a perspective view of the tip of the rod constituting the switch adjuster according to the present invention, FIG. 2 is a partially omitted cross-sectional view of the joint between the end and the bracket, and FIG. 3 is a cross-section of a nut having no sleeve. FIG. The same reference numerals are used for the same members as those shown in the drawings in FIG.

  7 in FIGS. 1 and 2 is a first nut, which is inserted into the sleeve 6a of the bracket 6 and prevents the threaded portion 5a of the rod from coming into contact with the sleeve 6a, similarly to the conventional nut of FIGS. A sleeve 7a is provided integrally. In the present invention, the second nut 8 is also integrally provided with a sleeve 8a similar in appearance to the sleeve 7a of the first nut 7, and the base end of the sleeve, that is, the nut 8 of the sleeve 8a. On the outer periphery of the connection portion, a ring-shaped contact surface 8b is formed which is an upward surface from the outer peripheral surface of the sleeve 8a toward the surface of the nut 8 facing the longitudinal end surface of the bracket sleeve 6a. The contact surface 8b is configured by a part of a spherical surface or a part of a conical surface.

  In the above configuration, it is now assumed that the rod 5 is moved leftward in FIG. At this time, the second nut 8 does not have the sleeve 8a shown in FIGS. 1 and 2, and only the contact surface 8b is provided on the surface of the nut bracket facing the sleeve 6a as shown in FIG. In the case of the leftward movement of the rod in FIG. 2, there is no guarantee that the entire circumference of the contact surface 8b is stably fitted into the bracket sleeve 6a. In particular, in a state where the axis of the rod 5 and the axis of the bracket sleeve 6a do not match, it is difficult to stably fit the entire circumference of the contact surface 8b into the bracket sleeve 6a. On the other hand, in the embodiment of the present invention, as shown in FIGS. 1 and 2, since the sleeve 8a of the second nut 8 is inserted into the sleeve 6a of the bracket 6, when the rod 5 moves to the left, Since the sleeve 8a reliably guides the contact surface 8b to the sleeve 6a of the bracket 6, the entire periphery of the contact surface 8b can be stably fitted and contacted with the sleeve 6a. Accordingly, after the second nut 8 is rotated and moved to a predetermined position in this state, the fixing bracket 9 is fitted to the nut, and the second nut 8 is fixed at a precisely adjusted position. In the case of using the illustrated hexagonal nut, the fixing metal 9 can be fitted each time the nut is rotated 60 degrees. In other words, the close contact adjustment is possible in units of rotation angle that is a fraction of the angle of the nut.

  As another embodiment of the present invention, a contact surface similar to the contact surface 8a of the second nut 8 is provided on the outer periphery of the base end portion of the sleeve 7a of the first nut 7 of FIGS. Also good. In this case, when the rod 5 is moved rightward in FIG. 2, the contact surface of the first nut 7 is guided to the sleeve 7 a and is stably fitted to the longitudinal end surface of the sleeve 6 a of the bracket 6. And can abut.

  Further, as shown in FIG. 4, in addition to forming the contact surface 7b at the base end portion of the sleeve 7a of the first nut 7, the diameter of the sleeve is reduced leaving the tip portion, and as a result, a cross section is formed at the tip portion. When the ridge 7c having an arc shape is formed and inserted into the sleeve 6a of the bracket 6, the tip of the sleeve 7a of the first nut 7 shown in FIG. 2 is cut at right angles to the axis of the sleeve. Compared to the case of having a surface, the first nut 7 can move smoothly in the sleeve 6a of the bracket 6 and wear between the sleeves can be prevented. If a protrusion similar to the protrusion 7 c is provided at the tip of the second nut 8, the sleeve 7 a of the first nut 7 and the sleeve 8 a of the second nut 8 are both smoothly within the sleeve 6 a of the bracket 6. It can move and wear between sleeves is prevented.

The perspective view which shows the front-end | tip part of the rod of the switch adjuster which concerns on this invention. Sectional drawing which shows the coupling | bond part of a bracket and a rod. Sectional drawing of a nut which has only a contact surface and does not have a sleeve. The principal part sectional drawing which shows the other Example of this invention. The top view which shows the installation state of a common conversion apparatus and a switch adjuster. FIG. 6 is a partially omitted front view of a conventional switch adjuster. The side view seen from the right side of FIG. The disassembled perspective view of the principal part of FIG. Sectional drawing of the principal part of FIG.

Explanation of symbols

SA switch adjuster 5 rod 5a thread 6 bracket 6a sleeve 7 first nut 7a sleeve 7b abutting surface 7c ridge 8 second nut 8a sleeve 8b abutting surface

Claims (4)

  A bracket fixed to the rolling rod, a rod whose one end is pivotally attached to the operation of the electric rolling machine, and a screw portion provided at the other end is inserted through the sleeve of the bracket; and the bracket In a switch adjuster composed of a first nut and a second nut for close contact that are screwed to the threaded portion of the rod on both sides of the sleeve, the first nut is inserted into the sleeve of the bracket and the sleeve A sleeve that prevents the rod from contacting the threaded portion of the rod, and the second nut is provided with a sleeve that is inserted into the sleeve of the bracket and guides the second nut toward the sleeve of the bracket; A switch adjuster comprising a ring-shaped contact surface comprising a spherical surface or a part of a conical surface on an outer periphery of a base end portion of the sleeve.   2. The switch adjuster according to claim 1, wherein a ring-shaped contact surface comprising a part of a spherical surface or a conical surface is provided on the outer periphery of the proximal end portion of the sleeve of the first nut.   3. The switch adjuster according to claim 2, wherein a protrusion having an arcuate cross section is provided on the outer periphery of the tip of the sleeve of the first nut.   3. The switch adjuster according to claim 2, wherein a protrusion having an arcuate cross section is provided on each of the outer periphery of the tip of the sleeve of the first nut and the outer periphery of the tip of the sleeve of the second nut.

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