CN100465046C

CN100465046C - Rubber crawler

Info

Publication number: CN100465046C
Application number: CNB2003801085685A
Authority: CN
Inventors: 下园靖夫
Original assignee: Bridgestone Corp
Current assignee: Bridgestone Corp
Priority date: 2003-01-09
Filing date: 2003-12-26
Publication date: 2009-03-04
Anticipated expiration: 2023-12-26
Also published as: JP2004216936A; JP4262991B2; KR20050110616A; KR100819198B1; CN1735530A; WO2004062990A1; AU2003292711A1

Abstract

A rubber crawler running mainly on a damp ground and capable of eliminating the production of mud balls passed through the engagement holes thereof with the teeth of sprockets and reducing vibration, comprising an endless rubber elastic body, cores buried therein at specified pitches in the longitudinal direction, steel cords surrounding the cores from the outside, the engagement parts thereof with the sprockets formed between the cores, and lugs formed on the outer peripheral surface of the endless rubber elastic body. The engagement parts thereof with the sprockets are characterized by bottomed recesses formed therein. The lugs are desirably formed on the outsides of the bottomed recesses.

Description

Rubber belt track

Technical field

The present invention relates to a kind of novel structure of rubber belt track, relate in particular to a kind of rubber belt track that on wetland, travels that is mainly used in.

Background technology

In the rubber belt track that is suitable on wetland, travelling, be separated by constant spacing and bury core components underground along the elastomeric length direction of ring-shaped rubber, in the core components outer felt around steel cord, be formed with the plate tooth in the rubber elastomer outside, connect the caoutchouc elasticity inside and outside and be formed with conjugate foramen between core components, it and drive sprocket mesh.

Fig. 8 is interior all side birds-eye vieies of the rubber belt track that always is being extensive use of, and Fig. 9 is that outer circumferential side birds-eye view Figure 10 is the cutaway view of cutting open along B-B line among Fig. 8.The 1st, rubber elastomer, continuous up and down along paper in Fig. 8.The 2nd, the core components that the constant spacing of being separated by in rubber elastomer 1 is buried underground, in core components 2, central portion is and drive sprocket ingear junction surface 2a that left and

right alar part

2b, 2c are embedded in the rubber elastomer 1.The 3rd, be embedded in the steel cord in this alar part 2b outside.And, on core gold 2, also have interior side-prominent a pair of projection 2b towards rubber elastomer 1.4a, 4b are the plate teeth, and they are linearly, are positioned at the outer circumferential side of rubber elastomer 1 and long and

short plate tooth

4a, 4b alternate configurations.The 5th, with drive sprocket ingear conjugate foramen, it is formed between central portion 2a, the 2a of

core components

2,2 of adjacency.Be the inside and outside surperficial shape that connects rubber elastomer 1.

Yet the rubber belt track of this prior art but has its shortcoming---the operator is caused vibration and brings walk the conjugate foramen 5 into from the ground.The former is because the runner 10 that rolls at the inner peripheral surface of rubber belt track is in plate tooth 4a, on the position on the 4b and the locational situation that is between them alternately take place, promptly, because of the situation that is positioned at the situation on plate tooth 4a, the 4b and leaves from it alternately takes place, so supporting and non-supporting situation for ground plane also alternately take place, therefore cause runner play about in the of 10, vibration is taken place inevitably.

In addition, be driven sprocket 20 and compress and solidify, become the walk shape and outwards under the clan, so this walk can be fallen on other objects sometimes, this is bad phenomenon owing to being attached near the conjugate foramen 5 mud.

Summary of the invention

The present invention makes in view of the various situations in the above prior art use, and its main purpose is, a kind of rubber belt track is provided, and it comprises: the ring-shaped rubber elastic body; Core components, it is separated by constant spacing and buries underground along the elastomeric length direction of ring-shaped rubber; Steel cord, it is routine to its winding outside this core components; The junction surface, it is formed between the core components, engages with drive sprocket; The plate tooth is formed on the elastomeric outer peripheral face of ring-shaped rubber, and wherein, the junction surface that engages with drive sprocket is for there being end recess, and the degree of depth at above-mentioned junction surface is greater than the tooth depth of above-mentioned drive sprocket.

And, in this rubber belt track, this plate tooth is preferably formed as the outside that end recess is arranged in this, particularly, this plate tooth is with respect to the Width tilted configuration of rubber elastomer, in addition, one side of something from about the Width of rubber elastomer may extend into the long slab tooth of Width end and the short slab tooth alternate configurations midway that only extends to above-mentioned Width.

Maximum of the present invention is characterised in that the junction surface that engages with drive sprocket is for there being end recess.In the rubber belt track of prior art, the junction surface that engages with drive sprocket must be the structure that connects surfaces externally and internally.Therefore, have mud by this conjugate foramen to be spherical and be rejected to the outside, and this mud is fallen the problem points on the contiguous object.Yet use the present invention but can avoid the generation of the effluent of this walk shape.Expect also that in addition mud etc. can accumulate in the end recess, but consider that this rubber belt track mainly travels at wetland, the mud that enters this recess all is rich in moisture, so can not solidify in this recess, is very suitable for practicality.

Like this, the another feature that the junction surface is designed to end recess is that the plate tooth that is formed at the outer circumferential side of rubber elastomer can dispose arbitrarily.That is, in the rubber belt track of prior art, because the conjugate foramen that certainly exists separated by a certain interval, so the configuration degree of freedom of this plate tooth is lower, yet because the present invention does not have conjugate foramen, so the configuration degree of freedom of plate tooth is high.Therefore, for example no matter prevent vibration for seeking, or desire increases propulsive force, can select with these is the plate tooth of purpose.

In addition, since the junction surface that engages with drive sprocket for end recess is arranged, so this has the rubber thickness of end recess not too thick.Therefore, can make rubber elastomer slightly thicker corresponding to the position of this recess.About this point, preferably the plate tooth is set corresponding to the position that end recess is arranged.

About this plate tooth, for reducing generation of vibration, best Width tilted configuration plate tooth with respect to rubber elastomer; In addition, for increasing propulsive force the mud of rubber belt track outside face is fallen, therefore, the half of plate tooth (long slab tooth) of Width end and plate tooth midway (short slab tooth) alternate configurations that only extends to above-mentioned Width of preferably may extend into from about the Width of rubber elastomer.

By making the plate tooth become the former such structure, when the runner as vibrative reason travels, this runner perseverance is on the plate tooth, so avoided the play up and down of runner, thereby prevented generation of vibration, on the other hand, become the such structure of the latter by making the plate tooth, can impel a part of peeling off, fall in the mud that is sandwiched in the plate between cog, thereby improve propulsive force.

Description of drawings

Fig. 1 is interior all side birds-eye vieies of the 1st example of rubber belt track of the present invention.

Fig. 2 is the outer circumferential side birds-eye view of the rubber belt track of Fig. 1.

Fig. 3 is the cutaway view of cutting open along A-A line among Fig. 1.

Fig. 4 is the amplification view along its length of recess.

Fig. 5 is the amplification view of the broad ways of above-mentioned recess.

Fig. 6 is the outer circumferential side birds-eye view of the 2nd example of rubber belt track of the present invention.

Fig. 7 is the outer circumferential side birds-eye view of the 3rd example of rubber belt track of the present invention.

Fig. 8 is interior all side birds-eye vieies of the rubber belt track of the prior art.

Fig. 9 is that outer circumferential side birds-eye view Figure 10 of Fig. 8 rubber belt track is the cutaway view of cutting open along B-B line among Fig. 8.

The specific embodiment

Followingly rubber belt track of the present invention is described in detail according to embodiment.Fig. 1 is interior all side birds-eye vieies of the 1st example of rubber belt track of the present invention.Fig. 2 is the outer circumferential side birds-eye view of the rubber belt track of Fig. 1.Fig. 3 is the cutaway view of cutting open along A-A line among Fig. 1.In addition, Fig. 4 is the amplification view along its length of recess.Fig. 5 is the amplification view of the broad ways of above-mentioned recess.

In the drawings, the 1st, the rubber elastomer of formation rubber belt track matrix connects into ring-type along the above-below direction among the figure.The 2nd, be embedded in the core components in the rubber elastomer, bury underground along the length direction of rubber elastomer 1 fixed interval of being separated by, left and right alar part 2b, the 2c of this core components 2 are embedded in the rubber elastomer, and central portion 2a is the position that engages with drive sprocket 20.And, on core components 2, to stand and be provided with a pair of projection 2d, they clip central portion 2a, and they are outstanding from the inside face of rubber elastomer 1.The 3rd, steel cord, it is the outer circumferential side shape that twines core components 2 and buries underground along the length direction of rubber elastomer 1.The 50th, it is formed at recess between the central portion 2a of core components 2, is the junction surface that engages with drive sprocket 20, be do not connect inside and outside surface end structure arranged.

This recess 50 with the pass of drive sprocket 20 is, recess 50 is than the tooth depth (H) also some deeply (D) of drive sprocket 20, and when travelling, drive sprocket 20 contacts with the central portion 2a of core components 2, preferably not with the inside face 50 of recess 50 ₀Contact.

On the other hand, along rubber belt track Width

configuration plate tooth

4a, 4b, and long and short plate tooth alternate configurations, both form chevron by central portion, locate to dispose

plate tooth

4a, 4b corresponding to the mode that end recess 50 is arranged with the summit of this chevron.And

plate tooth

4a, 4b from the top towards about gently tilt, the further horizontal-extending of plate tooth 4a broad ways and become the long slab tooth, plate tooth 4b is the short slab tooth of gentle slope.

Runner 10 shown in dotted line is striden projection 2d and is travelled on the inside face of rubber belt track, and it is costed

plate tooth

4a, 4b successively and travels, and the interval of plate tooth 4a, the 4b at position is narrower because runner 10 travels, so the play up and down of runner 10 is less.

On the other hand about

plate tooth

4a, 4b, the leading section of plate tooth 4b is different with the situation of plate tooth 4a, and it lacks horizontal part.Therefore plane A, the B that is impaled by the horizontal part of the front end of plate tooth 4b and plate tooth 4a is at plate between cog broad.Therefore, be taken up with rubber belt track and also peel off easily and fall even be sandwiched in therebetween mud.And, because rubber belt track does not have mud on the level attitude of plate tooth 4a during ground connection once again, so propulsive force plays a role.When mud during, almost do not transmit propulsive force, and cause the idle running of plate tooth, yet use the present invention can transmit propulsive force effectively the fully fixed and ground connection of plate between cog.About

plate tooth

4a, 4b, the height of plate tooth also can be all identical, but illustrative plate tooth 4a low some with height recess 50 cooresponding positions among the figure.

Fig. 6 is the outer circumferential side birds-eye view of the 2nd example of rubber belt track of the present invention.In this embodiment, have same relation about recess 50 and last example, the alternating bending of plate tooth becomes " へ " word shape, and its top correspondence recess 50.And long slab flank 14a roughly is same height shape and extends, and short slab flank 14b begins highly slowly to reduce from the top.About the discharge function of runner 10 and mud, roughly the same with the rubber belt track of the foregoing description.In addition, also can make the height of short slab tooth 14b side identical with the height of long slab flank 14a, according to circumstances different, also can make corresponding to the height at the position of recess 50 low some.

Fig. 7 is the outer circumferential side birds-eye view of the 3rd example of rubber belt track of the present invention.In this embodiment, have same relation about recess 50 and last example, on the other hand, being shaped as of plate tooth 24: central portion becomes rake, and front end has horizontal part.Rake is corresponding to recess 50.Side with horizontal part becomes long slab flank 24a, and a side that does not have horizontal part becomes short slab flank 24b.In addition, the height of this plate tooth 24 is roughly the same, but also can make corresponding to the height at the position of recess 50 low some.Because the discharge function of runner 10 and mud and the rubber belt track of the foregoing description are roughly the same, omit.

The present invention provides a kind of altogether rubber belt track as described, can not give birth to the walk of transfering to because it can not produce from combined hole, and can more freely dispose the plate tooth, so can reduce vibration and be very suitable for practicality.

Claims

1. rubber belt track, it comprises: the ring-shaped rubber elastic body; Core components, it is separated by constant spacing and buries underground along the elastomeric length direction of ring-shaped rubber; Steel cord, it from this core components outside to its winding; The junction surface, it is formed between the core components, engages with drive sprocket; The plate tooth is formed on the elastomeric outer peripheral face of ring-shaped rubber, it is characterized in that,

Above-mentioned junction surface is for there being end recess, and above-mentioned plate profile of tooth is formed in the outside that this has end recess;

The degree of depth at above-mentioned junction surface is greater than the tooth depth of above-mentioned drive sprocket.

2. rubber belt track as claimed in claim 1 is characterized in that,

Above-mentioned plate tooth is with respect to the Width tilted configuration of rubber elastomer, and in addition, one side of something from about the Width of rubber elastomer may extend into the long slab tooth of Width end and the short slab tooth alternate configurations midway that only extends to above-mentioned direction.