JPH0647091U - Crawler pad - Google Patents

Abstract

(57) [Abstract] [Purpose] Pad 1 for crawler belt by attaching and detaching one hook member 8
Since it can be attached / detached to / from the crawler plate 1, the mounting workability can be improved as compared with the conventional one in which the hook members on both sides are attached / detached. [Structure] The core member 6 is formed into a box shape with the flat plate portion 6a and the side plates 6b and 6c bent and formed on both sides thereof toward the back side, and the fixing hook member 7 is stepped from the end portion of the flat plate portion 6a. Detachable hook member 8 that is connected to the other end and is attached to the other end of the cored bar 6.
Of the mounting member to the core metal 6 is located inward from the end of the attachment / detachment hook member 8 over the height of the head of the mounting bolt 13 and the elastic member on the back side of the core metal 6 is attached to the track plate 1. The engaging hooks 7b and 8c are formed in the fixing hook member 7 and the detachable hook member 8 so as to engage with the treads 1a of the tread surface and engage with the end portions of the treads 2a of the shoe plate 1. It has been configured.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is a track plate of a track for dry land used in a tracked running device such as a bulldozer, an excavator dozer, and a power shovel, 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. 8, this conventional type has a substantially rectangular pillar-shaped pad main body a made of a hard rubber material, and is detachably fixed to both longitudinal ends of the pad main body a with bolts b and has a shoe plate. The pad main body a is provided with a groove d for fitting with a ridge (grouser) of the shoe plate. By engaging the groove d with the ridge of the shoe plate, the pads attached to the shoe plate by the hook members c, c are engaged with the shoe plate in the running direction thereof.

[0003]

[Problems to be solved by the device]

 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, the work must be done on both sides of each of the left and right crawler belts. Is bad, and the mounting bolts project to both sides of the track pad, so there is a risk that this projecting part (bolt or hook member) may come off and fall off when running, It was dangerous.

The present invention has been made in view of the above points, and can improve the mounting workability and the safety during running, and further improve the strength of the cored bar for a crawler track. The purpose is to provide a pad.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, a crawler belt pad according to the present invention is attached to at least a tread side of a track plate 1 having a ridge 2a projecting at the center in the running direction, and extends along the longitudinal direction of the track plate 1. A plate-shaped cored bar 6, an elastic member 5 fixed to the front and back sides of the cored bar 6, and a shape in which one end of the cored bar 6 in the longitudinal direction is engaged with the end of the shoe plate 1. For a crawler belt, which includes an integrally formed fixed hook member 7 and a detachable hook member 8 detachably attached to the back side of the other end of the core metal 6 and formed in a shape that engages with the end of the track plate 1. In the pad, the core material 6 is formed into a box-like shape with the flat plate portion 6a and the sides 6b and 6c bent and formed on both sides thereof toward the back side, and the fixing hook member 7 is formed from the end portion of the flat plate portion 6a. The attaching portion of the detachable hook member 8 to be attached to the other end of the core metal 6 in a stepwise manner is attached to the detachable hook member 8. It is located inward from the end over the height of the head of the mounting bolt 13, and the elastic member on the back side of the core metal 6 engages with the ridge 2a of the tread of the shoe plate 1 and abuts on the tread. It has a shape, and the fixing hook member 7 and the detachable hook member 8 are provided with engaging holes 7b and 8c with which the ends of the protrusions 2a of the shoe plate 1 are engaged. Further, the longitudinal ends of both side walls 6b, 6c of the box-shaped core member 6 are welded to the stepped portion of the fixed hook member 7. Further, both longitudinal ends of the elastic member 5 on the front side of the core material 6 are formed so as to rise inside the respective end portions of the flat plate portion 6a of the shoe plate 1.

[0006]

[Work]

 With the detachable hook member 8 removed, the crawler belt pad 4 is engaged with the fixed hook member 7 of the track pad 1 at one end of the crawler plate 1 so as to follow the tread surface thereof, and then the detachable hook member 8 of the crawler plate 1 is removed. The other end of the crawler belt 4 is fixed to the other end of the crawler belt pad 4 with the bolt 13 so that the crawler belt pad 4 is attached to the crawler plate 1. At this time, the ridge 2a at the center of the crawler plate 1 engages with the back side of the crawler belt pad 4 and both hook members 7, 8.

[0007]

[Example] An example of the present invention will be described with reference to Figs. In the figure, reference numeral 1 designates a track plate for dry land, in which a ridge 2a, 2b, 2c is provided in the longitudinal direction on substantially the center part in the width direction, and the track plate 1 is endless with links 3 respectively. The crawler track is connected to the. 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 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 core metal 6 is as shown in FIGS. 5 and 6, and is made of a plate material, and the cross-sectional shape of the crawler plate 1 in the width direction is a flat plate portion 6a, and both sides thereof are bent to the back side. Both side plates 6b and 6c are formed in a box shape in cross section which is open to the back side. A rib 9 is provided in the longitudinal direction at the central portion in the width direction of the flat plate portion 6a, and lateral ribs 10 are provided at a plurality of positions in the middle of the rib 9 in the longitudinal direction. Further, the flat plate portion 6a is provided with punched holes 11 at a plurality of positions in the longitudinal direction and at symmetrical positions in the width direction (Fig. 6). 12 and 12 are projected on the back side so as to form a chevron (Fig. 3).

An end portion of the crawler plate 1 of a fixed hook member 7 provided integrally with one end portion of the core metal 6 is fitted. The hook portion 7a is stepped from the end portion of the flat plate portion 6a and projects laterally. The stepped portion is provided with an engagement hole 7b with which one end of the protrusion 2a at the center of the shoe plate 1 is engaged. Further, the end portions of the side plates 6b and 6c on both sides of the flat plate portion 6a are welded and joined to the stepped portion as shown in FIG. 7 (a). A nut member 14 for fixing the detachable hook member 8 with a bolt 13 is fixed to the other end of the core metal 6.

The detachable hook member 8 is configured as shown in FIG. 7B, and includes a hook portion 8a that engages with a side end portion of the shoe plate 1 and a fixing piece portion 8b that is fixed to the core metal 6 side. The fixing piece portion 8b is bent inward from the hook portion 8 so that the head of the bolt 13 does not protrude to the outside of the portion 8a. The detachable hook member 8 is also provided with an engaging hole 8c with which the other end of the protrusion 2a at the center of the shoe plate 1 is engaged.

The elastic member 5 is baked and fixed to the core metal 6 so as to wrap it. The shape of the back side of the elastic member 5 is such that, on both sides in the longitudinal direction which are deviated from the link bolts 15 to which the shoe plate 1 is attached, as shown in FIG. It is shaped so as to engage with the insides of the ridges 2b and 2c and abut on the tread surface of the shoe plate 1. As shown in FIG. 4, the shape corresponding to the link bolt 15 is such that it escapes from the link bolt 15 and contacts the top surface of the central ridge 2a and both ridges 2b and 2c. . The heights of the side walls 6b and 6c of the cored bar 6 at this portion are also high enough not to interfere with the link bolt 15. As shown in FIG. 1, one ring bolt 15 is elastically contacted with the inner end surface 5a of the wall-side elastic member 5 in the mounted state.

On the other hand, the front side shape of the elastic member 5 has a gentle mountain-shaped cross-section in the longitudinal direction, and the hem portion of the one fixed hook member 8 side rises from the step of the fixed hook member 7. In addition, the hem portion on the side of the detachable hook member 8 is formed to rise from the end of the flat plate portion 6a, and both of these hem portions are about 10 mm from each longitudinal end of the flat plate portion 6a of the shoe plate 1. It is designed to stand up inside. The back side portion and the front side portion of the elastic member 5 are integrally formed by the punched hole 11 and the punched and bent pieces 12, 12 provided in the flat plate portion 6a of the cored bar 6.

The crawler belt pad according to the above configuration is attached to the tread side of each crawler plate 1 that constitutes the crawler belt. For attachment, the crawler belt pad with the detachable hook member 8 removed is fitted along the tread surface of the crawler plate 1 by engaging the fixed hook member 7 with one end of the crawler plate 1. At this time, the back side of this is brought into contact with the tread surface of the track plate 1 while engaging with the ridges 2a, 2b, 2c. Then, the detachable hook member 8 is engaged with the other end of the shoe plate 1 and is fixed to the other end of the core metal 6 by the bolt 13 screwed to the nut member 14.

At this time, the attachment length of the crawler belt pad is slightly shorter than the length of the crawler plate 1, and by tightening with the bolts 13, both hook members 7 and 8 are densely arranged in the longitudinal direction at the ends of the crawler plate 1. Is engaged with. Further, when the crawler belt pad is attached to the crawler plate 1, as described above, the respective protrusions 2a, 2b, 2c of the crawler plate 1 are engaged with the back surface of the crawler belt pad. The portions project from the hook members 7 and 8 on both sides and are engaged with the hook members 7 and 8 in the traveling direction.

[0015]

[Effect of device]

 According to the present invention, the attachment / detachment hook member 8 can be attached / detached to / from the crawler belt pad 4 and the crawler plate 1, so that the mounting workability can be improved as compared with the conventional attachment / detachment of the hook members on both sides. it can. Further, since the mounting portion of the detachable hook member 8 is located inward more than the height of the head of the mounting bolt 13 than the end portion of the detachable hook member 8, a bolt for mounting the detachable hook member 8 is provided. The head of 13 does not project to both sides of the crawler belt, the danger due to the attachment of the crawler belt pad 4 is eliminated, and the safety during traveling can be improved. Further, according to the present invention, the core material 6 is formed in a box shape with an open back side, and the fixing hook member 7 is connected in a stepwise manner from the end portion of the flat plate portion 6a of the core material 6, whereby the core material 6 is formed. The strength of is improved and deformation due to use can be prevented. In addition, the crawler belt pad 4 can be attached without rattling the tread surface of the crawler plate 1 and by firmly engaging in the running direction.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

3 is a cross-sectional arrow view taken along the line AA of FIG.

4 is a cross-sectional arrow view taken along the line BB of FIG.

FIG. 5 is a cross-sectional view showing a cored bar.

FIG. 6 is a plan view showing a cored bar.

FIG. 7A is a perspective view showing a main part of the core metal on the side of the fixed hook member. (B) is a perspective view showing a detachable hook member.

FIG. 8 is an exploded perspective view showing a conventional example.

[Explanation of symbols]

1 ... Crawler plate, 2a, 2b, 2c ... Ridges, 3 ... Link, 4 ...
Crawler belt pad, 5 ... elastic member, 6 ... core metal, 6a ... flat plate portion, 6b, 6c ... side plate, 7 ... fixed hook member, 7a, 8a ...
Hook portion, 7b ... Engagement hole, 8 ... Detachable hook member, 8b ... Fixing piece portion, 9, 10 ... Rib, 11 ... Punch hole, 12 ... Punching bent piece, 13 ... Bolt, 14 ... Nut member, 15 ... Link bolt.

Claims (3)

[Scope of utility model registration request] 1. A plate-shaped cored bar 6 mounted on the tread side of a track plate 1 having a projection 2a protruding at least at the center in the traveling direction, and extending along the longitudinal direction of the track plate 1; An elastic member 5 fixed to the front side surface and the back side surface, a fixed hook member 7 integrally formed with one end of the core metal 6 in the longitudinal direction to engage with the end of the shoe plate 1, and a core metal 6 In a crawler belt pad comprising a detachable hook member 8 detachably attached to the back side of the other end of the crawler plate 1 and engaged with the end of the crawler plate 1, the core member 6 and the flat plate portion 6a Side plates 6 bent and formed on both sides of
b and 6c are formed in a box shape facing the back side, and the fixed hook member 7 is continuously provided in a stepwise manner from the end portion of the flat plate portion 6a, and the detachable hook member 8 is attached to the other end of the cored bar 6. From the end of the detachable hook member 8, attach the bolt 1
3 is located inward over the height of the head, and the elastic member on the back side of the cored bar 6 is shaped so as to engage with the projection 2a of the tread surface of the shoe plate 1 and abut against the tread surface, and the fixed hook member 7 is provided. A crawler belt pad, characterized in that engaging and disengaging hook members 8 are provided with engaging holes 7b and 8c with which the ends of the ridges 2a of the crawler plate 1 engage. 2. Both side walls 6b of a core member 6 formed in a box shape,
The crawler belt pad according to claim 1, wherein the longitudinal end portion of 6c is welded to the step portion of the fixed hook member 7. 3. The crawler belt pad according to claim 1, wherein both longitudinal ends of the elastic member 5 on the front side of the core material 6 are formed so as to rise inside the respective end portions of the flat plate portion 6a of the shoe plate 1. .