JPH0610088U - Crawler pad - Google Patents

Abstract

(57) [Summary] [Purpose] The amount of elastic members used for the tread portion is small, almost all of the elastic members can be used, and the cored bar can be easily reused. Improve safety while driving. [Structure] An elastic member 5 constituting a tread is fixed to the upper side of a plate-shaped core metal 6, 15a, 15b having a size along the longitudinal direction of the tread of the track 1, and a tread of the track 1 is fixed to the lower side. A foot member that abuts and engages with the ridge 2 is provided in a protruding manner, and further fixed hook members 7, 16 that engage with one side of the shoe plate 1 are provided on one side of the cored bars 6, 15a, 15b. Detachable hook members 8, 8d that are integrally provided and that engage with the other side of the shoe plate 1 on the other side.
20 is detachably attached.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is a track plate for dry land tracks used in endless track type running devices such as bulldozers, shovel dozers, and power shovels, and has a non-slip ridge on the tread surface of the track surface. The present invention relates to a track pad that can be mounted and used.

[0002]

[Prior art]

 In order to protect the road surface from the crawler belt, pads have been detachably attached to the tread side of each crawler plate that constitutes the crawler belt. An example of this type of conventional track pad is disclosed in Japanese Utility Model Laid-Open No. 3-24485. As shown in FIG. 14, this conventional type has a substantially rectangular columnar pad body a made of a hard rubber material, and is detachably fixed to both ends in the longitudinal direction of the pad body a with bolts b. The pad main body a is provided with a groove d for fitting with a ridge (grouser) of the shoe plate, and the groove d is formed on the bottom surface of the pad main body a. By engaging with the ridge of the crawler plate, the pads attached to the crawler plate by the hook members c, c are engaged with the crawler plate in the traveling direction thereof.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional crawler belt pad, a cored bar is inserted in the inside thereof, but the entire thickness is made of hard rubber, and the back surface of the pad is in direct contact with the tread of the track. Therefore, the amount of hard rubber used per piece was large and the cost was high. When this is worn out, the amount of wear is up to the tip of the hook members c, c on both sides, and the rubber material below the tip of each hook member c, c is left as is, which is expensive. It was a waste of hard rubber. Further, in the above-mentioned conventional type, since the core metal is inserted into the hard rubber, it is difficult to take out only the core metal and re-use it at the time of disposal due to abrasion, and it causes a problem of disposal processing. It was a thing. Further, in the above-mentioned conventional one, since it is attached to the crawler plate via the hook members c, c on both the left and right sides, it is necessary to perform the attaching work on both sides of each of the left and right crawler belts. However, the workability is poor, and the bolts for mounting the protrusions project on both sides of the track pad, so there is a risk that this protrusion may come into contact with other objects when traveling and the protrusions (bolts or hook members) may be damaged and fall out. It was dangerous.

The present invention has been made in view of the above, and it requires less elastic member, and can be used until almost all the elastic member used is worn out, and after use. Aims to provide a crawler belt pad in which the cored bar can be easily reused and the workability of mounting and the safety during traveling can be improved. .

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, a crawler belt pad according to the present invention is a crawler belt pad attached to the tread side of a track plate 1 having a ridge 2 on the tread surface, and has a size along the longitudinal direction of the tread surface of the track plate 1. Of the plate-shaped cored bars 6, 15a, 15b to which the elastic member 5 constituting the tread surface is fixed, and the lower surface side of which abuts the tread surface of the shoe plate 1 and engages with the ridge 2. A protruding member is provided, and fixed hook members 7 and 16 that engage with one side of the shoe plate 1 are integrally provided on one side of the core metal 6, 15a, 15b, and the other side is provided with a shoe. The detachable hook members 8, 8d, 20 which engage with the other side portion of the plate 1 are detachably attached. Further, the fixed hook members 7, 16 and the removable hook members 8, 8d, 20 are arranged along the side edges of the shoe plate 1, and the fastening members for attaching the removable hook members 8, 8d, 20 are attached to the removable hooks. It is arranged inside the side ends of the members 8 and 20.

[0006]

[Work]

 The fixed hook members 7 and 16 are engaged with one side of the shoe plate 1, and the feet are engaged with the ridges 2 on the tread surface of the shoe plate 1. In this state, the detachable hook members 8, 8d and 20 are worn. The crawler belt pad 4 is attached to the tread surface side of the crawler plate 1 by engaging the other end portion of the plate 1 and attaching the same to the other end portions of the cored bars 6, 15a, 15b. At this time, the fastening members for attaching the detachable hook members 8, 8d, 20 do not protrude laterally from the attachable / detachable hook members 8, 20, and both hook members also largely protrude to both sides of the track plate 1. There is no.

[0007]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. In the figure, reference numeral 1 denotes a track plate for dry land in which a ridge 2 is provided in the longitudinal direction at a substantially center in the width direction. Each track plate 1 is endlessly connected by a link 3 to form a track. It has become. Reference numeral 4 denotes a crawler belt pad according to the present invention which can be easily attached to and removed from the tread surface side of each crawler plate 1 constituting the crawler belt. The crawler belt pad 4 includes an elastic member 5 constituting the tread surface, and an elastic member 5 constituting the tread surface. It comprises a core metal 6 for reinforcing the member 5, a fixed hook member 7 integrally provided at one end of the core metal 6, and a detachable hook member 8 detachably fixed to the other end. ing.

The cored bar 6 has a plate-like shape, and the cored bar 6 is punched and bent at two central portions in the width direction and two longitudinal positions so that the locking portion pieces 9, 9 having an inverted U-shaped cross section are formed. Also, the foot pieces 10, 10 are respectively provided on the back side by punching and bending at the middle portion in the longitudinal direction and on both side portions in the width direction. Further, a nut member 12 for fixing the detachable hook member 8 with a bolt 11 is fixed to the other end of the core metal 6.

The detachable hook member 8 is composed of a hook portion 8 a that engages with a side end portion of the shoe plate 1 and a fixing piece portion 8 b that is fixed to the core metal 6 side. It is bent inward so that the head of the bolt 11 does not protrude outward from the hook 8b. Holes 7a and 8c into which the ends of the ridges 2 of the shoe plate 1 are fitted are provided at the central portions of the hook members 7 and 8.

The elastic member 5 is baked and fixed to the cored bar 6 so as to wrap the plate-shaped cored bar 6. The thickness of the cored bar 6 is such that a predetermined elastic force is obtained on the upper surface side of the cored bar 6, and the cored bar 6 is slightly thicker on the back side. Further, the locking pieces 9 and 9 and the foot pieces 10 and 10 projectingly provided on the back surface side of the core metal 6 are similarly wrapped by the elastic member 5, and the elastic member 5 of this portion is the above-mentioned each piece 9. , 10 are connected to the upper thick part through the holes punched. The inner shapes of the inverted U-shaped engaging portion pieces 9 and 9 wrapped with the elastic member 5 are arranged so as to be engaged with the ridges 2 of the shoe plate 1. Further, the height of the locking member 9 and the elastic member 5 of the foot piece 10 in the state of being wrapped with the elastic member 5 is the height at which the tread surface of the shoe plate 1 comes into contact with the hook members 7 and 8 in engagement with each other. It has become.

In the above embodiment, the inverted U-shaped locking piece 9, 9 may be provided at the middle portion in the longitudinal direction, and the foot pieces 10 may be provided on both sides. It is not limited to the location, and may be provided at any position in the longitudinal direction. Also, the mounting portion of the detachable hook member 8 may be configured such that a bolt member is provided on the side of the core metal 6 instead of using the bolt 11 and the detachable hook member 8 is inserted into this and fixed with a nut. .

Further, in the above embodiment, the bolt 11 for fixing the attachment / detachment hook member 8 is laterally screwed, but as shown in FIGS. 6 and 7, the bolt 11 is made of an elastic member. You may make it screw-engage from the thickness direction of 5. In this case, a seat 6a for the bolt 11 is provided on the cored bar 6, and a fixing piece of the attaching / detaching member 8d is fixed along the lower side of the seat 6a. The plate-shaped cored bar 6 may be formed in a simple rectangular shape as shown in FIG. 3, but the cutouts 6b and 6c are not broken in strength as shown by phantom lines in FIG. The notches 6b and 6c may be provided to reduce the weight.

The tread surface of the elastic member 5 fixed to the upper surface side of the cored bar 6 is, for example, a flat surface, and the periphery thereof is chamfered in a sloped manner, and further, the tread surface is entirely non-slip. A large number of grooves 12 are provided in the central portion so as to face each other. The groove may have any shape as long as it has a non-slip effect. Further, the tread surface shape of the elastic member 5 is not limited to a flat surface shape, and as shown in FIGS. 8 (a) and 8 (b), a cross-sectional shape along the longitudinal direction is one mountain shape with a raised central portion, or a figure. As shown in FIGS. 8 (c) and 8 (d), the central portion may be lowered to form a double mountain shape. In this case, the grounding area of the single chevron is reduced only by the central part, which reduces the grounding area, improves the steering operability, and eliminates overload on both end parts, preventing the elastic member from cracking or breaking. In addition, the double-edged type provides stability when the load is applied to both sides in the longitudinal direction of the track, such as a crane. Further, as shown in Figs. (E) and (f), the cross-sectional shape in the short-side direction may also be set so that the central portion is lowered and the two parts are grounded. In this case, slippage in the traveling direction is prevented and driving force is Be improved.

The elastic member 5 is fixed to the entire upper surface of the cored bar 6, and at this time, as shown in FIG. 9, frames 13, 13 are erected on both sides in the longitudinal direction of the plate-shaped cored bar 6, The frames 13 and 13 may be embedded in the elastic member 5 to fix the elastic material 5 to the upper surface of the cored bar 6. According to this structure, the elastic member 5 is prevented from being deformed.

An example of the constituent material of the elastic member 5 is a mixed material of SBR and NR3, and the hardness thereof is preferably about 50 ° to 90 °. The hardness of the elastic member 5 may be uniform, for example, 65 ° as a whole, but as shown in FIG. 10, the tread surface of the elastic member 5 made of a soft rubber material having a hardness of 65 ° is provided at a plurality of points on the tread surface. Hard rubber material 5a having a hardness of 70 to 100 °, for example, 85 ° may be embedded at a plurality of positions. In this case, the wear resistance of the tread is improved with almost no loss of flexibility.

Further, as shown in FIG. 8 (g), by implanting a large number of spikes 14 made of metal or plastic pipe or the like on the tread surface of the elastic member 5, the abrasion resistance and the traction force of the elastic member 5 are improved. Can be achieved.

11 to 13 show another embodiment in which the structure of the cored bar or the like is changed, and the fixing hook member 16 is fixed to one end of the two band-shaped cores 15a and 15b. A nut member 17 is fixed to the lower surface of the other end. The elastic member 5 is fixed to the upper surfaces of the cores 15a and 15b. At the other end of the elastic member 5, a recess 18 is provided along the upper surfaces of the cores 15a and 15b, and a hole 19 facing the nut member 17 is provided, and the detachable hook member 20 is fixed to the recess 18. By inserting one side and fixing it through the hole 19 with the bolt 21, the detachable hook member 20 is fixed to the cored bars 15a and 15b. In this embodiment, a fixed hook member 16 is provided with a groove 22 with which one side of the ridge 2 of the shoe plate 1 engages, and the other side of the ridge 2 is provided between both nut members 17, 17. It is supposed to engage. Further, the inner bottom surface of the fixed hook member 16 and the lower surfaces of the nut members 17, 17 are in contact with the tread surface of the shoe plate 1. Then, the head of the bolt for fixing the link (not shown) is located in the space formed by these two parts.

In the above structure, the fixed hook members 7 and 16 are engaged with one end of the shoe plate 1, and the locking pieces 9 and 9 projecting below the cored bars 6 and 15a and 15 are provided. The foot material such as the foot piece 10 is brought into contact with the tread surface of the track plate 1 and engaged with the ridge 2, and then the other detachable hook member 8, 8d, 20 is attached to the other end portion of the track plate 1. The crawler belt pad 4 is attached to the crawler plate 1 by engaging with, and fixing it to the other ends of the cored bars 6, 15a, 15b. At this time, the bolts 11 and 21 for attaching the attachment / detachment hook members 8, 8d, 20 do not project laterally from the attachment / detachment hook members 8, 20.

[0019]

[Effect of device]

 According to the present invention, the elastic member 5 is fixed only to the upper side of the cored bars 6, 15a, 15b, and the cored bars 6, 15a, 15b are almost free of space except for the foot portion which abuts on the tread surface of the track plate 1. As a result, the mass of the elastic member 5 forming the tread can be minimized, and the cost of the elastic member 5 can be reduced. Further, the elastic member 5 can withstand use until almost all of it is worn out, so that the elastic member 5 can be effectively used and the service life can be extended. Further, when the elastic member 5 is worn out, the elastic member 5 can be baked and fixed on the upper surfaces of the cored bars 6, 15a, 15b, and the cored bars 6, 15a, 15b can be reused repeatedly. Can also reduce costs.

According to the present invention, when the crawler belt pad 4 is attached to the crawler plate 1, the fixed hook member 7 is hooked on one side of the crawler plate 1 and the other removable hook members 8 and 8d are used for the crawler plate. It is enough to hook onto the other side of 1 and fix the other end of the track pad 4 to this with bolts 11 and 21, and to attach each track pad 4 by working on only one side of the track. The workability is good. Further, since the mounting bolt does not protrude from the side end of the crawler belt pad 4, there is no particular risk of mounting the crawler belt pad 4.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing a first embodiment of the present invention.

FIG. 2 is a plan view of the embodiment shown in FIG.

FIG. 3 is a bottom view of the embodiment shown in FIG.

FIG. 4 (a) is a right side view of the embodiment shown in FIG.
(B) is a left side view of the embodiment shown in FIG. 1.

5A is a sectional view taken along the line AA of FIG.
(B) is sectional drawing which follows the BB line of FIG. (C) is sectional drawing which follows CC line of FIG.

FIG. 6 is a partially cutaway front view showing a second embodiment of the present invention.

7 is a sectional view taken along the line DD of FIG.

8 (a), (b), (c), (d), (e),
(F) is explanatory drawing which shows the cross-sectional shape from which an elastic member differs. (G) is sectional drawing which shows the example which embedded the spike in the elastic member.

FIG. 9 is a schematic perspective view showing a state where frames are provided on both sides of a cored bar.

FIG. 10 is a plan view showing an example in which a step portion of an elastic member is provided with a portion having different hardness.

FIG. 11 is a perspective view showing a second embodiment of the present invention.

12 is a partially cutaway front view of the embodiment shown in FIG.

13 is a cross-sectional view taken along the line DD of FIG.

FIG. 14 is an exploded perspective view showing a conventional example.

[Explanation of symbols]

1 ... Track plate, 2 ... Ridge, 3 ... Link, 4 ... Track pad,
5 ... Elastic member, 6, 15a, 15b ... Core bar, 7, 16 ...
Fixed hook member, 8, 8d, 20 ... Removable hook member, 9 ... Locking piece, 10 ... Foot piece, 11 ... Bolt, 12 ... Groove, 13 ... Frame,
14 ... Spike.

Claims (2)

[Scope of utility model registration request] 1. A crawler belt pad to be mounted on the tread side of a track 1 having a tread 2 on the tread, above a plate-shaped cored bar 6, 15a, 15b having a size along the longitudinal direction of the tread of the track 1. An elastic member 5 constituting a tread surface is fixed to the foot, and a foot member that abuts the tread surface of the shoe plate 1 and engages with the ridge 2 is provided on the lower side. Fixed hook members 7 and 16 that engage with one side of the shoe plate 1 are integrally provided on one side, and detachable hook members 8 and 8d that engage with the other side of the shoe plate 1 on the other side. , 20 are detachably attached to the track pad. 2. Fixing hook members 7, 16 and detachable hook members 8,
Each of 8d and 20 is arranged along the side edge of the shoe plate 1, and a fastening member for attaching the detachable hook members 8, 8d and 20 is arranged inside the side ends of the detachable hook members 8 and 20. The crawler belt pad according to claim 1.