JP2005308214A - Increased adhesion brake block, method for manufacturing the same and forming mold used for manufacturing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an increased adhesion brake block of a simple manufacturing process and not generating grouping, a method for manufacturing the same and a forming mold used for manufacturing. <P>SOLUTION: A main part body part 20 formed out of fluid material and a block 12 embedded in the main body part are included. A contact surface 12X of the block to a wheel is exposed when a sliding surface 25 formed on the main body part is used. A block side tip surface 12s is arranged at same position as a reference side surface 21 of the main body part crossing an axle direction during use or a position outside of the reference side surface 21. A projection part 22 made of fluid material is formed at a position covering the block side end surface. The forming mold used for manufacturing the increased adhesion brake block has the projection part 22 formed outside of the reference side surface 21 in a main recess part in which fluid material is filled. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an increased adhesion control wheel that brakes a wheel in contact with a wheel tread of a railway vehicle or the like, a manufacturing method thereof, and a molding die used for manufacturing the same. More specifically, it has a main body formed by molding a fluid material and a block embedded in the main body, and a contact surface of the block with respect to the wheel is exposed to a sliding surface formed in the main body during use. The present invention relates to a thickened adhesive restrictor, a method for producing the same, and a mold used for the production.

  The block is intended to improve the water spraying performance of removing the water film and oil film on the wheel surface while bringing the bottom surface into contact with the wheel surface (tread surface) to improve the adhesion between the wheel and the rail. Conventionally, in the case of a block-adhesive adhesive controller with a block, for the convenience of molding in which the contact between the block and the molding die is avoided in order to reduce the molding pressure and prevent the molding die from being damaged, Also, the width of the block part was narrowed. According to such a structure, the vicinity of both sides of the main body without the block becomes a smooth smooth surface when in contact with the wheel, and metal powder called scouring pieces generated during braking or the like are likely to adhere. And the grooving phenomenon that the wheel surface which contacts the side vicinity part by this adhering metal powder was locally shaved along the wheel peripheral surface occurred.

On the other hand, in order to prevent such a grooving phenomenon, a manufacturing method is known in which a block is inserted after molding of a main body as in Patent Document 1 below.
JP 2000-230589 A

  However, a process for inserting the block is required separately, and it has been difficult to sufficiently reduce the manufacturing cost.

  In view of the conventional situation, an object of the present invention is to provide a thickened adhesion control device that has a simple manufacturing process and does not generate grooving, a manufacturing method thereof, and a mold used for the manufacturing.

  In order to achieve the above-described object, the increased adhesion control device according to the present invention has a main body formed by molding a fluid material and a block embedded in the main body, and a contact surface of the block with respect to the wheel is provided. It is configured to be exposed to the sliding surface formed on the main body during use, and the block side end surface is arranged at the same position as the reference side of the main body that intersects the axle direction during use or at a position outside the reference side. In addition, the projecting portion made of a fluid material is formed at a position covering the block side end surface.

  In addition, at least a pair of the blocks may be disposed at a position with respect to a direction orthogonal to the axle direction, and the at least one block may be disposed in a relationship in which the vertical axes of the blocks intersecting the contact surface are parallel to each other. .

  On the other hand, the manufacturing method of the above-mentioned increased adhesion control wheel is characterized in that the fluid material is filled in a mold having a recess that forms the protruding portion outside the reference side surface in the main recess filled with the fluid material. The block is arranged so that the block-side end surface is located at the position corresponding to the recess, and the fluid material in the main recess is solidified in a state where the fluid material is filled between the recess and the block-side end surface. There is.

  In addition, a feature of the mold used for manufacturing the increased adhesion control wheel described in the above feature is that the main recess filled with the fluid material has a recess that forms the protrusion outside the reference side surface. . In this mold, each of the recesses may be arranged such that axes of the plurality of recesses along the longitudinal direction of the recesses are parallel to each other.

  According to the above-described increased adhesion control device according to the present invention, the manufacturing method thereof, and the features of the mold used for the manufacture, the block can be extended at least to the position of the reference side surface without damaging the mold, thereby preventing grooving. I was able to do it. Further, by arranging the block vertical axis and the axis along the longitudinal direction of the recess to be parallel to each other, the molded product can be extracted from the mold regardless of the presence of the recess.

  Other objects, configurations, and effects of the present invention will become apparent from the following embodiments of the present invention.

  Next, the present invention will be described in more detail with reference to the accompanying drawings. In the specification of the present invention, the axle direction X is the direction along the rotational axis of the wheel 100 in FIG. 2, the rotational direction Y is the axle rotational direction orthogonal to the axle direction X, and the block vertical directions Z1 and Z2 are on the contact surface 12x. It is an axis along the vertical direction of the intersecting block 12. Here, the up and down directions are directions for convenience of explanation, for example, the up and down directions in FIG. 1A, and are not necessarily absolute up and down.

  As shown in FIG. 1A, the increased adhesion control wheel 1 includes a frame 10 and a main body 20. The frame 10 includes a base plate 11 formed in an arc shape having a common axis and the center of the wheel, a pair of cast iron blocks 12, a mounting portion 13 for attaching the increased adhesion control wheel 1 to a vehicle, a wheel, It comprises a main body 20 that contacts, a reference side surface 21 that is formed by a uniform surface in the main body portion 20, and a protruding portion 22 that protrudes from the reference side surface 21 in the main body portion 20.

  The sliding surface 25 is a braking surface for sliding against the wheel to perform braking, and is inclined together with the contact surface 12x as shown in the sectional view of FIG. The pair of reference side surfaces 21, 21 intersect orthogonally with the axle direction X, and the pair of blocks 12 are embedded inside the main body portion 20. The block 12 is a casting having a substantially rectangular parallelepiped shape. The contact surface 12x is brought into contact with the wheel surface (tread surface) to improve the adhesion between the wheel and the rail, and the water spray removes a water film and an oil film on the wheel surface. The purpose is to improve performance. Further, the pair of cast iron blocks 12 and 12 are arranged so that the block vertical directions Z1 and Z2 are parallel to each other, separated from each other in the previous rotation direction. Iron powder, graphite powder, and the like are appropriately blended in the synthetic resin powder, which is a kind of fluid material used as the material of the main body portion 20, and can be solidified by heat compression molding.

  As shown in FIGS. 1B and 1C, the projecting portion 22 is formed in a hemispherical shape and covers a block side end surface 12s which is a side surface of the block 12 projecting from the reference side surface 21 along the vertical direction. From this, by providing the protrusion 22 in the molded product 2, it is possible to reduce the weight compared to the conventional main body material to manufacture an increased adhesion control wheel having the same block width.

  2 (b), the width Wb2 of the block 12 'is narrower than the width Wc of the main body 20'. Accordingly, since the block 12 'is not interposed in the portion of the difference width d in the main body over the entire length La illustrated in FIG. 1B as a reference example, grooving is generated along the portion of the difference width d. However, in the present invention shown in FIG. 2A, the width Wb1 of the block 12 is wider than the width Wc of the main body 20 of the peripheral portion. Since the protruding portion 22 has only a protruding portion length Lb that is a slight width with respect to the rotational direction of the wheel, it does not cause grooving. Therefore, in the present invention, a portion like the difference width d does not occur, and the problem of grooving can be solved.

  Next, the manufacturing method of the increased adhesion control wheel 1 of this invention is demonstrated. 3 and 4 show the frame 10 and the mold 3 used for manufacturing the increased adhesion control wheel 1. As shown in FIGS. 3 (a) and 4 (a), the frame 10 includes a substrate 11, a block 12, and a mounting portion for attaching the increased adhesion control wheel 1 to the vehicle. 13. The substrate 11 shown in FIG. 3A is formed in an arc shape substantially the same as the circumferential surface of the wheel, and a mounting portion 13 is welded to the upper portion of the substrate 11.

  The molding die 3 shown in FIGS. 3B and 4B includes a main concave portion 30 that is filled with a material that becomes the main body portion 20 of the increased adhesion control wheel 1, a molding side surface 31, and the block vertical directions Z1 and Z2. And a groove-like recess 32 extending vertically. Since the molding bottom surface 33 is a sliding surface between the main body portion 20 and the wheel of the increased adhesion control wheel 1 after molding, the molding bottom surface 33 is formed substantially along the inclination of the wheel and leaves a slight gap between the tip of the block 12. . And the bottom face of the main-body part 20 is shaved so that it may become the same as the circumferential surface of a wheel after shaping | molding. As shown in FIG. 4 (b), the pair of recesses 32, 32 are formed in a hemispherical shape so as to cover the vicinity of the front end of the side surface of the block 12, and along the block vertical direction Z1, Z2 so as to be parallel to each other. Oriented in the vertical direction. The filling portion of the mold 3 is filled with synthetic resin powder to be the main body portion 20, and the frame 10 is inserted in the vertical direction from the upper portion of the mold 3 so that the front end of the side surface of the block 12 is close to the recess 32, and press-molded. To do. Since the recess 32 is formed, the tip of the side surface of the block 12 does not come into contact with the molding side surface of the molding die 3, so that molding can be performed while being sufficiently pressurized without damaging the molding side surface 31.

  Next, another embodiment according to the present invention will be described with reference to FIGS. In the following description, members similar to those in the above embodiment are denoted by the same reference numerals.

  In the second embodiment, as shown in FIGS. 5B and 5C, the block 12 is inclined and welded to the front surface of the frame 10. From this, compared with 1st embodiment, the area of the block 12 made from cast iron which slides with a wheel becomes large in a longitudinal direction with respect to a block. As shown in FIG. 5D, since the sliding surface 25 protrudes outside the block 12, the problem of grooving can be solved.

  In 3rd embodiment shown in FIG. 6, the shape of the protrusion part 22 differs from 1st, 2 embodiment. The protrusion 22a of the molded product 2 has a substantially elliptical shape. With such a shape, the protrusion 22 has a large allowance for the change in the block width of the block 12, and therefore can flexibly respond to the change in the block width, and the block-side end surface 12s does not come into contact with the protrusion 22a. In the fourth embodiment shown in FIG. 7, the protrusion 22b has a rectangular shape, and in the fifth embodiment shown in FIG. 8, the protrusion 22c has a trapezoidal shape. In these fourth and fifth embodiments, since the processing cost of the recess 32 is low, it is possible to manufacture the increased adhesion control ring 1 at a lower cost.

  Furthermore, in the sixth embodiment shown in FIG. 9, the number of blocks 12 is different from the above embodiments. By increasing the number of blocks 12, it is possible to manufacture the increased adhesion control wheel 1 having a braking performance specialized for bad weather such as rainy weather. In the sixth embodiment shown in FIG. 9, all the blocks 12 are projected from the reference side surface 21, but it is not necessary to project all the blocks, and only at least one of the signs 12 a 1 and 12 a 4, etc. If the above block 12 protrudes from the reference side surface 21, the other blocks 12a2, 12a3 may not protrude. The blocks 12a1 to a4 may be welded while being inclined with respect to the front surface of the frame 10 in a bottom view.

Finally, still another embodiment will be described.
In each said embodiment, the number of a block and the number of protrusion parts are not restricted to the said embodiment, You may arrange | position suitably. Further, the frame 10 may be formed by assembling the substrate 11 and the block 12, or the substrate 11 and the block 12 may be integrally formed.

  In the above embodiments, the present invention is implemented as a tread brake. However, the present invention can also be used as a brake shoe for a disc brake in which the disc is sandwiched between brake shoes. In this case, the “reference side surface 21 of the main body portion intersecting the axle direction during use” in claim 1 is interpreted as “the reference side surface 21 of the main body portion along the axle direction during use”.

  In the above embodiments, synthetic resin powder is used as the main body material. However, the material is not limited to the synthetic resin powder, and may be a fluid material that sufficiently exhibits the braking performance, and may be, for example, a gel-like resin, an alloy powder, a casting, or the like. Moreover, you may comprise the block 12 with the raw material which can activate the surface of wheels other than cast iron.

  The present invention can be used as an increased adhesion control wheel for a railway vehicle. Further, the present invention can be used not only as a railway vehicle but also as a control device for an automobile, a two-wheeled vehicle or the like.

(A) is a front view of the increased adhesion control wheel of this invention, (b) is a bottom view of (a), (c) is a top view of (a). (A) is an AA expanded sectional view of the molded object of this invention, (b) is an expanded sectional view in the AA equivalent part of the conventional molded object. (A) is a front view of the frame of the increased adhesion control ring, (b) is a front view of a shaping | molding die. (A) is a bottom view of the frame of the increased adhesion control ring, and (b) is a plan view of the mold. (A) is a front view of a molded product according to the second embodiment of the present invention, (b) is a bottom view of (a), (c) is a plan view of (a), and (d) is C of (a). It is a BB expanded sectional view in -C section. It is the elements on larger scale near the projection part of the bottom view of the molding concerning a third embodiment of the present invention. It is the elements on larger scale near the projection part of the bottom view of the molding concerning a fourth embodiment of the present invention. It is the elements on larger scale near the projection part of the bottom view of the molding concerning a fifth embodiment of the present invention. It is a bottom view of the molded product which concerns on 6th embodiment of this invention.

Explanation of symbols

1: increased adhesion control, 2: molded product, 3: molding die, 10: frame, 11: substrate, 12, 12a1-4: block, 12x: contact surface, 12s: block side end surface, 13: mounting portion, 20 : Main body, 21: Reference side, 22, 22b1-4, 22a-22c: Protrusion, 25: Sliding surface, 31: Molded side, 32: Concave, 33: Molded bottom, 100: Axle, La: Full length, Lb: Projection length, X: Axle direction, Y: Rotation direction, Z1, Z2: Block vertical direction

Claims (5)

Increased adhesion control device having a main body part formed by molding a fluid material and a block embedded in the main body part, and exposing a contact surface of the block to a wheel on a sliding surface formed on the main body part in use. The block-side end surface is disposed at the same position as the reference side surface of the main body that intersects the axle direction in use or outside the reference side surface, and the projecting portion made of a fluid material at a position covering the block-side end surface. Increased adhesion control ring. At least a pair of the blocks are arranged at a position with respect to a direction orthogonal to the axle direction, and at least the blocks are arranged in a relationship in which the vertical axes of the blocks intersecting the block bottom surface are parallel to each other. Item 10. The increased adhesion control ring according to Item 1. 3. The method of manufacturing an increased adhesion control wheel according to claim 1 or 2, wherein the flow is applied to a molding die having a recess that forms the protrusion outside the reference side surface in the main recess filled with the fluid material. The material is filled, and the block is arranged so that the block side end surface is located at the position corresponding to the recess, and the fluid in the main recess is filled with the fluid material between the recess and the block side end surface. A method for producing a thickened adhesive restrictor characterized by solidifying a material. The mold for use in manufacturing the increased adhesion control wheel according to claim 1, wherein the main concave portion filled with the fluid material has a concave portion that forms the protruding portion outside the reference side surface. Mold. The mold according to claim 4, wherein the recesses are arranged such that axes of the recesses along the longitudinal direction of the recesses are parallel to each other.

Images