Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D55/00—Endless track vehicles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D55/00—Endless track vehicles
  • B62D55/08—Endless track units; Parts thereof
  • B62D55/18—Tracks
  • B62D55/20—Tracks of articulated type, e.g. chains
  • B62D55/202—Wheel engaging parts; Wheel guides on links
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D55/00—Endless track vehicles
  • B62D55/08—Endless track units; Parts thereof
  • B62D55/18—Tracks
  • B62D55/24—Tracks of continuously flexible type, e.g. rubber belts
  • B62D55/244—Moulded in one piece, with either smooth surfaces or surfaces having projections, e.g. incorporating reinforcing elements

Definitions

• the present invention relates to a crawler device, and more particularly to a rubber crawler device for an engineering work machine having an endless rubber bevel with an embedded metal core.
• iron caster pillars 1 have been used exclusively as suspensions of civil engineering work machines, and this is used as the traveling rotation means as shown in Figs. 1A and 1B.
• the endless rubber belt 4 has been partially used in recent years, as shown in Figs. 2A and 2B.
• the middle wheel 2 for iron casters can be used, so it is a dual-purpose type. Therefore, it is a great advantage in the production process.
• FIG. 2B the one shown in Fig. 2B can be used as the outer wheel 5a, 5a of the outer wheel 5 is not suitable for iron-carrying villas.
• reference numeral 6 denotes a metal core
• reference numeral 7 denotes a stainless steel record that is buried in the rubber belt 4 and extends in the circumferential direction.
• the middle rolling wheel (Fig. 2A) may have a rolling wheel running surface that is the top surface m of the central protrusion of the cored bar 6. Vibrations occur at the surface of the connection between the two, or when a person moves over a convex body such as a stone, a folding phenomenon occurs. Center protruding part of core metal The gap between the wheels opens, the wheels fall, and then the two center protrusions are strongly kicked when they come out, and the core metal itself peels off from the rubber belt 4 As a result, the durability is impaired.
• the present invention has been made in view of the circumstances described above, and its purpose is to prevent the occurrence of derailing, to stabilize the running of the rolling wheels, and to cause vibration.
• the present invention is to provide a rubber roller device with a cored bar which can reduce endurance and can also improve the durability of the endless rubber belt itself.
• Another object of the present invention is to provide a crawler device which can be used both as a rubber crawler using an endless rubber belt and as an endless iron-made cabin. It is to be .
• Yet another object of the present invention is to significantly reduce the wear of the central protrusion of the cored bar, thereby allowing the runout of the rolling wheel during traveling.
• An object of the present invention is to provide a crawler device capable of preventing derailing by minimizing the size.
• a plurality of flanges having flanges which protrude in the radial direction while protruding on both outer sides of a central inner ring portion.
• Endless rubber ring with endless rubber belt or shrink-linking means containing cored bar means wound around the outer collar roller and the outer collar roller.
• the rolling surface of the flange portion of the outer collar roller contacts the exposed shoulder of the cored bar means.
• a crawler device in which a rolling surface of a central inner ring portion of the outer collar wheel contacts with an upper surface of the shaking means.
• the crawler device in order to achieve the above object, according to the second aspect of the present invention, there is provided the crawler device according to the first aspect, wherein the core metal of the rubber belt is provided.
• the means are buried in the rubber belt at predetermined intervals along the circumferential direction of the rubber belt and so that each of them exposes a portion on the inner circumferential side of the rubber belt.
• a crawler device comprising a plurality of cored members.
• the crawler device according to the second aspect wherein the rubber belt between the adjacent metal core members intersects the inner peripheral surface of the rubber belt in the width direction thereof.
• a crawler device provided with a concave groove is provided.
• each of the core metal members is connected to a central connection member.
• a pair of central projections erected so as to be opposed to each other with the parts interposed therebetween, and project from the central projections to the opposite side of the central coupling part, respectively.
• the left and right horizontal wings, and the mutually parallel parts extending from the front and rear ends of the horizontal wings at the respective boundaries between the left and right horizontal wings and the pair of central protrusions.
• a crawler device having a substantially flat upper surface that is slightly higher than the upper surface of the left and right horizontal wing portions.
• each of the shoulder steps of the metal core member has a concave portion having a predetermined length at an intermediate portion thereof.
• the crawler device according to the fifth aspect, wherein front and rear upper surfaces of the shoulder step portion having the intermediate concave portion have different lengths. Further, there is provided a crawler device in which the front and rear upper surface arrangement of the shoulder step on the left horizontal wing side is opposite to the front and rear upper surface arrangement of the shoulder step on the right horizontal wing side.
• a method according to the sixth aspect is provided.
• a roller device wherein one of the front and rear shoulders on the left horizontal wing side and the other one of the front and rear shoulders on the right horizontal wing side are missing. Device is provided.
• the crawler device according to the fourth aspect, wherein the pair of central projecting portions of the metal core member are arranged in front of and behind the center point of the metal core member.
• a crawler device is provided which is formed so as to be shifted, and wherein the shoulder is formed only on one of the front and rear sides opposite to the direction in which the central projection is shifted. It is.
• each of the pair of central projecting portions is provided at a lower portion of the end face on the shoulder step side.
• a middle shoulder having an intermediate height between the top surface of the central protruding portion and the upper surface of the shoulder step, and having a hem thereof in contact with a side of the upper surface of the shoulder step.
• the crawler device is provided to protrude from the crawler device.
• the crawler device according to the ninth aspect, wherein the intermediate shoulder is formed such that the intermediate shoulder has a central part of an end face of the central protruding part.
• the crawler device formed in the above is provided.
• FIG. 1A, FIG. 1B, FIG. 2A and FIG. 2B are schematic sectional views showing specific examples of the conventional crawler device, respectively.
• FIG. 3 is a schematic perspective view of a core used in the crawler device of the present invention.
• FIG. 4 is a fragmentary perspective view showing a state where the core metal shown in FIG. 3 is embedded in the rubber belt main body.
• FIG. 5A to Fig. 5C show the state of contact between the rolling wheel and the rubber belt with the cored bar
• Fig. 5A is a schematic cross-sectional view in the case of a rubber roller
• FIG. 5B is a schematic longitudinal sectional view taken along the line B—B in FIG. 5A
• FIG. 5C is a schematic transverse sectional view in the case of an iron caster villa.
• FIGS. 6, 8 and 1 ⁇ are plan views showing other specific examples of the core bar, respectively.
• FIGS. 7, 9 and 11 are fragmentary plan views showing the state in which the respective cores shown in FIGS. 6 to 10 are embedded in the rubber belt body. Yes,
• FIGS. 12A and 12B are schematic longitudinal sectional views respectively showing the winding state of the crawler device in the sprocket portion.
• FIG. 2A relates to a conventional example
• FIG. 12B relates to a specific example of the present invention.
• FIG. 13A and Fig. 13B are schematic diagrams showing the floating state of the rolling wheel when the rubber belt containing the cored bar is inclined.
• FIG. 13A is a schematic cross-sectional view
• FIG. 13A relates to a conventional example
• FIG. 13B relates to a specific example of the present invention.
• Fig. 14 is an explanatory diagram showing the abrasion state of the central protruding part of the metal core during traveling in the conventional rubber roller device as viewed from the longitudinal direction of the rubber belt.
• FIGS. 15 and 16 are schematic perspective views showing two more specific examples of the core metal, respectively.
• Fig. 17A shows the positional relationship between the mandrel and the outer collar wheel in a crawler device using the mandrel shown in Figs. 15 and 16 It is a partial cross-sectional view
• FIG. 17B is an explanatory diagram showing the abrasion state of the center protruding portion of the cored bar when the rubber crawler device of the present invention is running, as viewed from the longitudinal direction of the rubber belt. do it
• FIG. 18 is a cross-sectional view of still another embodiment of the cored rubber belt of the present invention.
• FIG. 3 shows a rubber-roller core bar 10 according to the present invention, in which 11 and 11 ′ are left and right wing portions, and 12 and 12 ′ are center portions. It is a pair of central projections that stand up at a predetermined facing distance, and the structure is the same as the conventional one, but in the present invention, each central projection 12, 12 ′ Wings 1 1
• the front and rear end portions at the boundary with 1 1 ' are respectively protruded by a predetermined length in the width direction of the wing portion, and the shoulder portions 13a, 13b and 13a', 1 3b 'is formed, and the upper surface of the shoulder portion is made almost flat and slightly higher than the left and right wing portions 11 and 11', and the shoulder portions 13a and 13 are formed. Between b and 13a ', 13b' are formed recesses 14 and 14 ', which are one step lower.
• the core bar 10 of this configuration has shoulders 13a, 13b and 13a ', 13b' whose upper surface is the inner periphery of the rubber belt 4. It is buried so that it is exposed on the surface.
• reference numeral 15 denotes an engagement hole for engaging the claws of the socket 8
• reference numeral 16 denotes a steel sheet buried in the rubber belt 4.
• the code 17 is a concave groove formed between the adjacent metal cores in parallel with the metal core, and I is a central connecting portion.
• FIGS. 5A, 5B and 5C are diagrams showing the state of use, in which the rolling wheel 3 is an outer flange type and its inner peripheral rolling surface 3a and outer flange 3b : 3b ' The outer peripheral surface of the central protruding part top surface 1 2 a,
• the outer flanges 3b, 3b 'where the wheel 3 is located on the upper surface of the central protruding portions 12 and 12' are shoulder steps 13a, 13b and 13a, respectively. They are located in the non-contact state in the recesses 14 and 14 'between', 13b '.
• Fig. 5C is a cross-sectional view of the iron caster in the running state, in which the outer peripheral surface 3a of the inner ring of the rolling wheel 3 is in contact with the link. Become .
• Fig. 6 shows another example of the cored bar.
• the shoulders 13a, 13b and 13a ', 13b' have the lengths of £, ⁇ ', respectively.
• Fig. 7 shows an example in which the core bar is buried in the rubber belt body in a direction opposite to each other at the left and right positions outside the central protrusions 12 and 12 '.
• the shoulder portions 13a, 13b and 13a ', 13b' formed in the long and short lengths are arranged so as to be alternated in the length direction. .
• FIG. 8 shows the shorter example of the long and short shoulders in the above example.
• FIG. 9 is a plan view in which such a core is buried in the rubber belt body.
• the distance between the shoulders of the adjacent cores 10 and 10 should be as small as possible. It is something that can be made smaller.
• the central protruding portions 12 and 12 ′ of the cored bar are provided in a parallel state facing each other at the central portion of the cored bar.
• the staggered parallel arrangement with the phases shifted as shown in Fig. 10 is used, and this is the overhang length of the shoulder step as shown in Fig. 11
• the distance j between the core metal rolling parts that are in contact with each other can be reduced, and the distance k between the left and right shoulders is made as small as possible (zero). You can do it. Therefore, running vibration can be further reduced.
• the crawler device of the present invention is configured as described above, and the rolling wheel can be easily used for both the iron caster and the cored rubber belt. I can get it.
• the wheel running surface that is, the upper surface of the shoulder of the cored bar, 13a, 13b, 13a ', 13b' and the steeper Since the distance between records 16 can be made relatively small as compared with the conventional example, FIG. 12A (conventional example) and FIG. Example) d> The d 'force and e>e' prevent the breakage phenomenon and reduce vibration, resulting in improved driving stability.
• the concave groove 17 has an effect of releasing the compressive strain generated on the peripheral surface of the rubber belt body.
• the durability is excellent, but also the outer flange of the rolling wheel presses the shoulder step, so that the rolling is prevented.
• the outer collar width V (see Fig. 5A) of the ring can be reduced.
• the core is inserted as shown in FIGS. 13A and 13B.
• the lift of the wheel becomes small, so that the effect of preventing the belt from coming off is increased.
• the shoulder of the crawler device has a shoulder portion because there is no risk of collision with the core metal at the winding portion around the sprocket. Since the lengths of 13b and 13b 'can be made sufficiently large, the drop of the rolling wheel between the central protrusions of the adjacent metal cores is further reduced. As a result, the anti-vibration effect is significantly increased
• FIGS. 15 and 16 show specific examples of a core metal improved to solve this problem.
• FIG. 15 is a perspective view of a core bar 10 ′ improved according to the present invention, in which central protrusions,,, erected near the center and shoulders ⁇ , ⁇ ⁇ on both sides are shown. The force of an intermediate shoulder 18, 18 between ⁇ and ⁇ is shown.
• FIG. 16 is another specific example, and the specific example shown in FIG. 15 is the entire outer end face of the central projecting parts ⁇ , ⁇ of the middle shoulders 18, 18.
• the core bar 1 ⁇ ⁇ of the present example has the middle shoulders 18 ′ and 18 ′ partially profitable from the central portion of the outer end face.
• FIG. 17A is a partial cross-sectional view showing a contact state of the rubber belt having the core bar 10 ′ having the above configuration embedded therein and the outer collar wheel 2 during traveling.
• FIG. 7B is an explanatory cross-sectional view in the length direction.
• the inner peripheral surface of the outer flange portion 3b (3b ') is not to be brought into contact with not only the middle shoulder 18 (18') but also the upper edge G of the central protruding portion.
• the wear at the middle shoulder 18 (18 ') position is also small, as is the wear at the upper corner G of the corner. be able to .
• the middle shoulder 1.8 should be installed over the whole width of the cored bar. In addition, the same effect can be obtained even if the width is partially sandwiched as shown in Fig. 16.
• FIG. 18 shows further specific examples of the rubber belt with a cored bar of the present invention.
• the upper part of the rubber belt 4 in which the core metal 1 ⁇ is embedded that is, the space between the upper surface of the rubber belt and the left and right wings of the core metal 10 is also provided. Record 19 is buried.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Gears, Cams (AREA)
• Escalators And Moving Walkways (AREA)
• Jib Cranes (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=14078626

Family Applications (1)

Country Status (6)

Cited By (3)

Families Citing this family (32)

Citations (2)

Family Cites Families (5)

• 1988
  • 1988-07-13 JP JP1988093305U patent/JPH0288889U/ja active Pending
• 1989
  • 1989-07-13 US US07/623,661 patent/US5131728A/en not_active Expired - Lifetime
  • 1989-07-13 KR KR1019900700515A patent/KR960007074B1/ko not_active IP Right Cessation
  • 1989-07-13 EP EP89908250A patent/EP0428725B1/en not_active Expired - Lifetime
  • 1989-07-13 WO PCT/JP1989/000705 patent/WO1990000488A1/ja active IP Right Grant
  • 1989-07-13 DE DE68922616T patent/DE68922616T2/de not_active Expired - Lifetime

Patent Citations (2)

Non-Patent Citations (1)

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