JP3154531U - Rubber track for iron track with internal space - Google Patents

Abstract

A rubber pad for fixing to an iron crawler belt of a construction machine or the like, the rubber pad for the iron crawler belt having an internal space for the purpose of reducing the weight, saving the manufacturing cost, and reducing deformation and breakage of the rubber pad. In a rubber pad 100 to be fastened to a shoe plate 200 of an iron crawler belt, a lower projection 111 having an inverted triangular shape is provided, which contacts each inclined surface of a front projection 210 and a rear projection 220 of the shoe plate, respectively. An internal space 112 is formed between the front and rear lower protrusions, and an iron plate core 120 that is attached and fixed to the lower surface of the rubber layer 110 that forms the internal space 112 and each surface of the lower protrusion 111 is provided. Further, when the rubber pad 100 is attached to the shoe plate 200, the central protrusion 230 of the shoe plate supports the central portion of the iron plate core 120, while the inner space 112 is separated into two chambers by the central protrusion 230. The both sides of the internal space are opened. [Selection] Figure 1

Description

  The present invention relates to a rubber pad for fixing to an iron crawler belt of a construction machine or the like, and relates to a rubber pad for an iron crawler belt having an internal space for the purpose of reducing weight, saving manufacturing cost, and reducing deformation and breakage of the rubber pad. It is.

  A conventionally known shape of the fixing surface side of the rubber pad is formed to be similar to the shape of the shoe plate of the iron crawler belt and is manufactured so as to be fixed in close contact with the iron crawler belt.

  As shown in FIG. 6, the conventionally known rubber pad has an iron plate core 120 of the rubber pad 100 formed in accordance with the upper surface shape of the shoe plate 200, and the rubber layer 110 is installed on the iron plate core 120. The shoe plate 200 was provided with a space 55. Therefore, when the rubber pad is fixed to the shoe plate, the iron plate core of the rubber pad clogs the mud hole of the shoe plate. Therefore, if the iron crawler belt travels in the mud, the sprocket teeth that move the iron crawler belt rotate and push the mud out of the shoe plate. In such a case, pressure is applied to the rubber pad, so that the rubber of the rubber pad swells or the adhesive layer of the rubber is peeled off, but the problem has not been improved yet. .

Japanese Patent Laid-Open No. 11-286284 JP-A-8-282559

  The conventionally known shape of the mounting surface of the rubber pad is similar to that of the shoe pad of the iron crawler belt, and the shoe plate and the rubber pad are closely fixed (Patent Documents 1 and 2).

  Therefore, when the iron crawler belt travels in the mud, there is a problem that pressure is applied to the rubber pad and the rubber pad is deformed or the adhesive layer of the rubber pad is peeled off.

  In order to remedy the above problems, there is also a proposal to provide a hole in the rubber pad to remove mud, but if a hole is made in the rubber pad, the pressure-resistant area of the rubber pad will be reduced by the area of the hole, and the unit applied to the rubber pad There was a problem of increasing the hit pressure.

  Furthermore, since the shape of the iron plate core used for the rubber pad must be the same cross-sectional shape as the upper surface shape of the shoe plate, a large iron plate press die similar to the molding of the shoe plate is required to form the iron plate core. This was one of the causes of the soaring rubber pad manufacturing costs.

  Also, in order to prevent the head of the shoe bolt used to fix the shoe plate to the machine from interfering with the rubber pad, a hole is made in the iron plate core of the rubber pad, and the head of the shoe bolt does not interfere with the rubber pad. There were various problems such as the need to provide voids.

  In addition, since the rubber pad having a conventional shape uses a large amount of high-quality rubber, there is a problem that the price of the rubber pad rises from the viewpoint of the rubber price.

  This device provides a rubber pad having a passage for discharging mud flowing through a hole for mud removal, so that the rubber pad can be prevented from being deformed or peeled off due to intruding mud. can do.

  Further, the iron plate core of the present invention abuts on the lower surface of the rubber pad and reinforces the portion, so that the object can be achieved even if it is much smaller than the shoe plate. Therefore, the mold for forming the iron plate core is much smaller than the shoe plate, and a large mold is not necessary, thus solving the problem of rising prices. Furthermore, since the amount of rubber required only by providing a space may be small, the cost required for rubber can be reduced.

  As described above, a large metal mold is not necessary, and the amount of rubber is reduced, so that the price of the entire rubber pad can be significantly reduced.

  Next, the specific structure of this device will be described. According to the present invention, a lower protrusion having an inverted triangular cross section that touches the inclined surfaces of the front and rear protrusions of the shoe plate of the iron crawler belt is provided before and after the lower surface, and an internal space is provided between the lower protrusions. The bolt head is concealed on the formed rubber layer, the iron plate core fixed to the surface of each of the lower surface of the rubber layer and the lower protrusion, and the upper plate surface of the iron plate core. The bolt is positioned between the shoe plate and a vertical coupling bolt that passes through the inner space through the upper plate, a lower surface of the upper plate that is inserted into the vertical coupling bolt, and the shoe plate. A cylindrical spacer that supports the nut, a nut attached to the lower end of the vertical coupling bolt that penetrates the shoe plate, and a central projecting portion of the shoe plate that supports the central portion of the iron plate core in the lateral direction, The feature is that the internal space is divided into two by the protrusion.

  In addition, a lower protrusion having an inverted triangular cross section that contacts the front protrusion of the shoe plate and the inclined surfaces of the rear protrusion is provided at the front and rear of the lower surface, and an internal space is formed between the lower protrusions. A rubber layer, an upper plate connecting the two support plates, a lower surface of the rubber layer constituting the internal space, an iron plate core attached and fixed to each surface of the lower protrusion, and a trapezoidal cross section The upper end is coupled and fixed to the left end of the iron plate core, the hook supporting the left lower surface of the shoe plate, and the right side of the iron plate core is coupled and fixed to the lower end surface of the female screw. And a vertical piece and a horizontal piece. The vertical piece is provided with a coupling hole at a position corresponding to the female screw of the nut, and the horizontal piece is a lower portion of a right end portion of the shoe plate. Angle brace that supports the surface closely A horizontal fastening bolt that passes through the coupling hole and is fastened to the nut member, and a central projecting portion of the shoe plate is configured to support the central portion of the iron plate core in an elongated manner in the lateral direction. There is a feature that can be divided into two.

  In this device, a space is provided between the lower surface of the rubber pad and the upper surface of the shoe plate so as to automatically remove mud that has entered the space. A specific structure for providing a space as described above will be described in an embodiment. The space is provided with a protrusion on the lower surface of the rubber pad, the size (height) of the space is determined by the length of the protrusion, and the case where a spacer is inserted (inserted) instead of the protrusion. The case where a hook is used (FIG. 4) and the case where the nut member 170 is fixed to the reinforcing bar core 120 may be used, but the best structure is adopted in relation to the shape of the shoe plate. In short, any structure in which a space is provided between the rubber pad and the upper surface of the spacer belongs to the technology of the present invention.

  The technical effects of the construction of this device are as follows. According to this device, since the rubber pad provided with the horizontal passage for discharging the mud flowing through the mud hole is provided, it is possible to prevent the rubber pad from being deformed and damaged. In other words, when the rubber pad and shoe plate are joined together, the central protrusion of the shoe plate supports the central part of the iron plate core in the lateral direction and the internal space is broken into two by the central protrusion. Even if mud flows into the internal space through the mud holes in the shoe plate, the open portions at both ends of the internal space remain open. It is discharged to the outside and has the effect of preventing deformation and damage of the rubber pad.

  Moreover, there is no possibility that interference with the head portion of the shoe bolt occurs without preparing a separate hole in the iron plate core and providing a space in the rubber layer.

  Further, since the internal space is provided at the lower part of the rubber layer, it is possible to greatly save the rubber material and to produce an inexpensive rubber pad.

(A) Sectional drawing of the Example of this invention, (b) Sectional drawing which similarly attached the shoe plate. The perspective view of a shoe plate similarly. Sectional drawing of the state similarly connected with the connecting bolt. (A) Similarly sectional drawing of another Example, (b) The perspective view of an angle bracket similarly. It is sectional drawing of another Example similarly, (a) has a cutting | judgement accommodating part, (b) has an accommodation piece, (c) has a reinforcement piece, (d) is an iron plate core. (E) is a bent iron plate core, (f) is a U-shaped iron plate core, and (g) is applied to the U-shaped iron plate core. It is an example of a conventionally known rubber pad, and (a) a longitudinal side view, (b) a longitudinal front view with a part omitted, (c) a longitudinal front view, (d) a front view, and (e) a shoe plate Plan view.

  The present invention relates to a rubber pad that is fastened to a shoe plate of an iron crawler belt, wherein the upper surface (grounding surface) of the rubber pad is planar, and a concave portion is formed in a trapezoidal cross section on the lower surface. A space is provided between the upper surface of the shoe plate and the lower surface of the rubber pad so that the soil enters the hole from the shoe plate. Since the recessed portion of the rubber pad is reinforced with a metal plate, there is no possibility that the rubber pad is deformed.

  The recessed portion is for providing a space, and various reinforcements can be considered as shown in FIG. 5, but the point is to keep a substantially constant space, and there is no limitation on the shape structure of the reinforcement. Therefore, even if the reinforcement is different from that of the embodiment shown in FIG. 5, the purposes, actions, and effects all belong to the technical scope of the present invention.

  A specific example of this device will be described in detail with reference to the accompanying drawings 1, 2, and 3.

  FIG. 1 shows a cross-sectional structure of the rubber pad 100 in the longitudinal direction (the traveling direction of the iron crawler belt) according to a specific embodiment of the present invention, and FIG. 2 shows a front protrusion 210, a rear protrusion 220, a central protrusion 230 and mud. FIG. 3 is a perspective view of a general shoe plate 200 provided with a punch hole 44. FIG. 3 shows a specific embodiment of the present invention. FIG. 4 is a cross-sectional view of the rubber pad 100 and the shoe plate 200 in the longitudinal direction (the traveling direction of the iron crawler belt) showing the cross-sectional structure, and FIG. 4 is a specific example of this device using the hook 160 and the angle bracket 180 and FIG. 3 is a lateral cross-sectional view of a rubber pad 100 and a shoe plate 200 showing a cross-sectional structure for joining the plates 200.

  The rubber pad 100 of the present invention includes a rubber layer 110 and an iron plate core 120 integrated with the rubber layer 110. As shown in FIG. 1, the rubber layer 110 is provided with a lower protrusion 111 having an inverted triangular cross section that contacts the inclined surfaces of the front protrusion 210 and the rear protrusion 220 of the shoe plate 200 of FIG. An internal space 112 is formed between the two lower protrusions 111.

  As shown in FIG. 1, the iron plate core 120 has a trapezoidal cross section formed by two support plates 121 facing each other and an upper plate 122 that connects the support plates 121. The rubber layer 110 is integrated with the surface. Such a rubber pad 100 can be attached to the shoe plate 200 by the method shown in FIG. 3, and can be attached to the shoe plate 200 by the method shown in FIG.

  FIG. 3 shows an example in which the vertical coupling bolt 130, the spacer 140, and the coupling nut 150 are used. The head of the vertical coupling bolt 130 is fixed to the upper surface of the upper plate 122 of the iron plate core 120 by a method such as welding, and is embedded in the rubber layer 110. The thread portion of the vertical coupling bolt 130 protrudes through the upper plate 122 and passes through the internal space 112.

  Next, the spacer 140 is generally cylindrical. Inserted into the vertical coupling bolt 130 and positioned between the lower surface of the upper plate 122 and the shoe plate 200 to support the lower surface of the upper plate 122 and prevent deformation of the iron core 120 when the coupling nut 150 is installed. .

  The coupling nut 150 is screwed to the lower end portion of the vertical coupling bolt 130 penetrating the shoe plate 200 to couple the rubber pad 100 and the shoe plate 200 together.

  In this way, when the rubber pad 100 and the shoe plate 200 are integrally coupled, the central protrusion 230 of the shoe plate 200 supports the central portion of the iron plate core 120 in the lateral direction and the internal space 112 is divided into two chambers by the central protrusion 230. The two ends of the inner space 112 that are separated from each other in the horizontal direction (perpendicular to the traveling direction of the iron crawler belt) remain open, and the mud holes 44 illustrated in FIG. Even if mud flows in, it is discharged to the outside again through the open portions at both ends.

  FIG. 4 shows an example in which the rubber pad 100 and the shoe plate 200 are fastened using the hook 160 and the angle bracket 180. Also in the case of FIG. 4, the cross-sectional structure of the rubber layer 110 and the iron plate core 120 in the longitudinal direction (the traveling direction of the iron crawler belt) is the same as in FIG. The hook 160 is bent into a “匚” shape, and the upper end is joined and fixed to the left side surface of the iron plate core 120 by welding or the like. The lower end of the hook 160 is the left end of the shoe plate 200. It is inserted into and supports the lower left side surface of the shoe plate 200.

  The nut member 170 is coupled and fixed to the lower surface of the right end portion of the iron plate core 120 by a method such as welding. A female screw is provided at the center of the nut member 170. It is preferable that two nut members 170 are fixed at intervals so that one nut member 170 is positioned before and after the central protrusion 230.

  The angle bracket 180 is composed of a vertical piece 181 and a horizontal piece 182 and has a cross-sectional structure like a “F”. The vertical piece 181 is provided with a coupling hole 183 at a position corresponding to the female thread of the nut member 170. If there are two nut members 170, two coupling holes 183 must be provided correspondingly. The hook 160, the nut member 170, and the angle bracket are space forming members.

  With the hook 160 inserted into the left end of the shoe plate 200, the horizontal piece 182 of the angle bracket 180 is secured to the right end of the shoe plate 200 by fastening the horizontal connecting bolt 190 that has passed through the connecting hole 183 to the female thread of the nut member 170. The lower surface of the part will be closely supported. Although not shown in the attached drawings, a nut member 170 can be installed instead of the hook 160 at the left end, and the angle bracket 180 can be used at all the left and right ends.

  Another embodiment of the present invention will be described with reference to FIG. The embodiment of FIG. 5 relates to the reinforcement of the rubber pad, and the shape structure of the shoe plate is constant, so that the shape of the portion in contact with the shoe plate is the same. In short, there is a space between the lower surface of the rubber pad and the upper surface of the shoe plate so that mud that has entered between can be automatically removed.

FIG. 5 is a longitudinal sectional view of various embodiments of the rubber pad according to the present invention. That is, (a) is an example in which the upper plate 122 is partially incised and the cut receiving portion 11 is provided. When the rubber pad 100 and the shoe plate 200 are coupled, the central projecting portion 230 of the shoe plate 200 becomes the cut receiving portion 11. Is housed in.

  (B) is an example in which a separate accommodation piece 22 is fixed to the lower surface of the upper plate 122 by a method such as welding. Therefore, when the rubber pad 100 and the shoe plate 200 are coupled, the central protrusion 230 of the shoe plate 200 is accommodated in the cut piece 22.

  (C) is an example in which a large number of reinforcing pieces 33 are installed at the corners of the iron plate core 120. The reinforcing piece 33 is welded to the support plate 121 and the upper plate 122 in the form of a short flat plate, and serves to reinforce the structural strength of the iron plate core 120.

  (D) A part of the upper plate 122 is incised, and the rubber layer 110 and the upper plate 122 are separated by intruding into the rubber layer 110 as a protruding piece 124 and increasing the bonding force between the rubber layer 110 and the upper plate 122. Can be prevented.

  (E) is embedded in the rubber layer 110 so as to protrude upward in a shape corresponding to the upper cross section of the central protrusion 230 so that the central portion of the upper plate 122 accommodates the central protrusion 230 of the shoe plate 200. This is an example in which the resistance to external force and the bonding force of the rubber layer 110 are increased.

  (F) is an example in which the iron plate core 120 is deformed so that the head of the shoe bolt does not interfere with the side surface by increasing the width of the internal space 112 of the iron plate core 120 while increasing the strength while standing upright. It is.

  (G) is an example in which a thin rubber layer 123 is formed on the back side of the iron plate core 120 so as to reinforce the adhesive force between the rubber layer 110 and the iron plate core 120 and the iron plate core 120 is almost completely covered.

11 Curtain accommodating portion 22 Receiving piece 33 Reinforcing piece 44 Mud hole 55 Space 100 Rubber pad 110 Rubber layer 111 Lower protrusion 112 Internal space 120 Iron plate core 121 Support plate 122 Upper plate 130 Vertical coupling bolt 140 Spacer 150 Binding nut 160 Hook 170 Nut member 180 Angle bracket 181 Vertical piece 182 Horizontal piece 183 Joint hole 190 Horizontal joint bolt 200 Shoe plate 210 Front projecting part 220 Rear projecting part 230 Center projecting part

Claims (6)

  A rubber pad that is fixed to a shoe plate of an iron crawler belt, and a projection that can contact the shoe plate is provided on the lower surface of the rubber pad so that an internal space can be formed, on the surface of the rubber pad that faces the internal space A rubber pad for an iron crawler belt characterized by fixing an iron plate core.   A rubber pad having an iron plate core fixed to the bottom surface thereof for fixing to a shoe plate of an iron crawler belt, and a space for forming a predetermined space between the shoe plate and the shoe pad when the rubber pad is fixed to the shoe plate. A rubber pad for an iron crawler belt characterized by interposing a forming member.   It is a rubber pad that is fixed to the shoe plate of the iron crawler belt, and an inner space is formed on the lower surface thereof by providing projections that can abut against the front projecting portion of the shoe plate and the inclined surface of the rear projecting portion, respectively. A rubber pad for an iron crawler belt, wherein an iron plate core is fixed to the inner surface of the internal space, and a head of a coupling bolt that connects the shoe plate and the rubber pad is embedded in the rubber pad through the iron plate core.   It is a rubber pad that is fixed to the shoe plate of the iron crawler belt, and an inner space is formed on the lower surface thereof by providing projections that can abut against the front projecting portion of the shoe plate and the inclined surface of the rear projecting portion, respectively. The iron plate core is fixed to the inner surface of the internal space, the head of a coupling bolt that connects the shoe plate and the rubber pad is embedded in the rubber pad that penetrates the iron plate core, the lower surface of the iron plate core, and the shoe plate A rubber pad for an iron crawler belt, in which a cylindrical spacer is fitted to a connecting bolt between the upper surface and the upper surface.   It is a rubber pad that is fixed to the shoe plate of the iron crawler belt, and an inner space is formed on the lower surface thereof by providing projections that can abut against the front projecting portion of the shoe plate and the inclined surface of the rear projecting portion, respectively. A rubber pad for an iron crawler belt, wherein an iron plate core is fixed to the inner surface of the inner space, and the upper end surface of the central protrusion 230 of the shoe plate is brought into contact with the lower surface of the iron plate core.   It is a rubber pad that is fixed to the shoe plate of the iron crawler belt, and an inner space is formed on the lower surface thereof by providing projections that can abut against the front projecting portion of the shoe plate and the inclined surface of the rear projecting portion, respectively. The iron plate core is fixed to the inner surface of the internal space, the head of the coupling bolt that connects the shoe plate and the rubber pad is embedded in the rubber pad that penetrates the iron plate core, and the curvature accommodating portion 11 or the A rubber pad for an iron crawler belt, which is provided with a reinforcing piece 33.

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