CN2518632Y

CN2518632Y - Saw blade

Info

Publication number: CN2518632Y
Application number: CN 01273237
Authority: CN
Inventors: 角田荣宏
Original assignee: LIKESHI ELECTROMECHANICAL INDUSTRY Co Ltd SUZHOU
Current assignee: LIKESHI ELECTROMECHANICAL INDUSTRY Co Ltd SUZHOU
Priority date: 2001-12-30
Filing date: 2001-12-30
Publication date: 2002-10-30
Anticipated expiration: 2011-12-30

Abstract

The utility model discloses a serrated bar and includes a serrated bar [30] and a tooth [31] which is arranged on one side of the serrated bar. A heavy bob [33] used for damped vibration is arranged on the front end of the serrated bar [30]. By arranging the heavy bob as a damped vibration absorber on the front end of the serrated bar, the vibration can be absorbed efficiently and the noise can be reduced. Thus, if the utility model is adopted for cutting, a cut surface with good planeness can be gained.

Description

Saw blade

Technical field

The utility model relates to a kind of saw disc, and is especially for the reciprocating type saw disc that cuts off pipe, especially relevant with saw blade.

Background technology

In the prior art,, often adopt reciprocating type saw disc as the simple cutter of the cut-out pipe of on tracheae or water pipe, installing at the narrow scene of burying underground.The expression in accompanying drawing 9 of one of reciprocating type saw disc like this example.In same figure, saw disc is made of the sawed-off body [10] with saw blade [11], vice part [20] in general.Sawed-off body [10] is attached on the drive unit [90] that inside is provided with motor by flexible axle [40], and the rotating drive power of motor is transformed to the reciprocating motion of saw blade [11] by the power transmission mechanism in the sawed-off body [10].Sawed-off body [10] connects by turning cylinder freely to rotate with respect to vice body [20].Therefore, the operating personnel holds handle knob [13] that are located on the sawed-off body [10], by the rotation that makes turning cylinder sawed-off body [10] is rotated, and saw blade [11] moves on the direction of transversely cutting pipe [p], and pipe can be cut off.Vice part [20] has zygote [21] and the chain [23] that slightly is V-shape.Zygote [21] is arranged at the periphery of pipe [p], chain [23] twist in pipe [p] around, tighten up handle [25] by rotation and tighten up chain [23], thereby sawed-off body [10] can be installed on the pipe.Certainly, an end of chain [23] tightening up handle [25] integral structure and can become mounted and removable structure with vice part [20].Because saw blade be banded the prolongation, when it moved back and forth, front end irregularly significantly was offset, and not only causes extraordinary noise, and sawtooth is nibbled and can not cut on pipe, perhaps can not get smooth cut-out.

Summary of the invention

The objective of the invention is to overcome the shortcoming of prior art, prevent the big brokenly deflection of saw blade, realization can obtain the Saw blade of flatness height, cut-out end face attractive in appearance.

The technical solution of the utility model is: a kind of Saw blade, and comprise Saw blade and be arranged at the tooth of a side, be provided with the weight that is used for damping vibration at the front end of Saw blade.Weight in that front end is provided with as the vibration attenuation damper, can absorb vibration, the noise of Saw blade effectively.

The utility model compared with prior art has following advantage:

At the front end of Saw blade, by being provided with weight, vibration effectively being absorbed with noise reduce as the decay damper, therefore,, can obtain the good section of flatness if adopt the utility model to cut.

Description of drawings

Accompanying drawing 1 is the front view of the Saw blade of the utility model first embodiment,

Accompanying drawing 2 is left views of the leading section of accompanying drawing 1;

Accompanying drawing 3 is the front views with the Saw blade of the utility model second embodiment;

Accompanying drawing 4 is the sectional views at the IV-IV place of accompanying drawing 3;

Accompanying drawing 5 is the expression Saw blade relevant with other embodiment of the present utility model front views when being installed on the sawed-off body;

Accompanying drawing 6 is vertical views of accompanying drawing 5;

Accompanying drawing 7 is VII-VII place sectional views of accompanying drawing 5;

Accompanying drawing 8 is VIIIVIII place sectional views of accompanying drawing 5;

Accompanying drawing 9 is figure of the operating position of the original saw disc of explanation.Wherein:

[10], sawed-off body; [11], saw blade; [13] handle knob; [14], driving shaft; [20], vice part; [21], zygote; [23], chain; [25], tighten up handle; [30], Saw blade; [31], tooth; [33], weight; [34] through hole; [35], lath; [36], groove; [37], bolt; [40], flexible axle; [41], quality body; [51], second band-like plate; [71], screw; [73], holding plate; [75], bolt; [77], bolt; [81], pin; [83], alignment pin; [p], pipe; [90], drive unit; [91] screw; [93], pin-and-hole; [97], pin-and-hole;

The specific embodiment:

Accompanying drawing 1, attached 2 figure are figure of expression first embodiment of the present utility model, and Saw blade [30] is the shape of band-like plate, has formed tooth [31] in the one side.At the front end of Saw blade [30] weight [33] has been installed.In the embodiment shown in accompanying drawing 1, accompanying drawing 2 figure, weight [33] is made of a pair of lath [35] of clamping Saw blade [30], and the two ends of this lath [35] are fixed by bolt [37], clamping Saw blade [30], and weight [33] loading and unloading freely are fixed on the Saw blade [30].Weight [33] face best and Saw blade [30] matches, and sees accompanying drawing 1, and the upper and lower both sides of weight [33] form symmetry shape, and then vibration-damping effect is better.

Weight [33] has formed the damper that vibration attenuation is used, add man-hour in cut-out, if be provided with heavy bell, just absorbed the big vibration of Saw blade, its vibrations and noise are reduced significantly, this is identified in experiment: when adopting the Saw blade relevant with the utility model to carry out the cut-out of pipe, vibration that produces when weight is arranged and noise are compared with no weight, and vibration and noise when weight is arranged diminish widely.The size of weight and weight should suitably design corresponding to the size of Saw blade [30].

Among second embodiment shown in accompanying drawing 3, the accompanying drawing 4, weight [33] is by constituting with the integrated quality body [41] that forms of Saw blade [30].In this embodiment, the banded sheet material of Saw blade [30] forms quality body [41] advantageous particularly when mold pressing; Perhaps, the quality body [41] that forms in addition is also passable by being welded on Saw blade [30].

In accompanying drawing 1, accompanying drawing 3, through hole [34], groove [36] are through hole and the grooves that is used for the bolt (figure does not have expression) on the sawed-off body [10] that Saw blade [30] is installed on saw disc respectively.

Accompanying drawing 5 is expression the 3rd embodiment of the present utility model to accompanying drawing 8, and in same figure, Saw blade [30] has formed the structure of the two pieces of band-like plates that overlap.That is to say, on first band-like plate of the Saw blade that is formed with tooth [31] [30], be placed with second band-like plate [51] side by side at plate width direction (above-below direction of Fig. 5), adopt the joint bolt [37] identical, make a pair of lath (weight) [35] clamp two Saw blades and form integrated with accompanying drawing 1.Second band-like plate [51] is a reinforcement usefulness, and when reality was cut off operation, second band-like plate [51] for the usefulness of cutting, was not therefore wanted tooth [31].For example, use the used Saw blade of hypodontia [31] as second band-like plate [51].When making the second special-purpose band saw plate [51], there is no need one and be shaped as aforesaid tooth [31], lath also can separately.But the second band saw plate [51] is roughly the same shape with Saw blade [30], and roughly the same weight can be arranged, and makes that both uniformities are better.The second band saw plate [51] is when cutting off operation, and because of same Saw blade [30] enters in the pipe together, therefore the thickness of slab of the second band saw plate [51] must be less than the thickness of Saw blade [30].

Situation with above-mentioned twice laid is opposite fully, and the second band saw plate [51] is made by the material that offsets with the eigentone that has with Saw blade [30], and in theory, it also is possible absorbing vibration fully.

The second band saw plate [51] also plays the effect that Saw blade [30] is strengthened, and its rigidity (being the plane retentivity) can improve.

Saw blade [30] is fixed with the driving shaft [14] of sawed-off body [10] in its end.Driving shaft [14] is attached at the power transmission mechanism in the sawed-off body [10], vertically moves back and forth at it.

The internal structure (power transmission mechanism etc.) of sawed-off body [10] is commonly known, and does not have direct relation with the utility model, has done in the accompanying drawing to omit and has handled.

On driving shaft [14], formed and be screw [91] and pin-and-hole [93] by bolt described later [77] and pin [81].In the screw [91] of driving shaft [14], pass set bolt [77], Saw blade [30], driving shaft [14] and holding plate [73] integrative-structure.

The end of the second band saw plate [51] and Saw blade [30] are just the same, by bolt [75] and alignment pin [83] positioning and fixing on holding plate [73].

Saw blade [30], the second band saw plate [51] are completed into integrated by common holding plate [73].

Compare with first embodiment to the embodiment shown in the accompanying drawing 8 by accompanying drawing 5, have the advantage that vibration-damping effect and noise prevent that effect from further improving.

Claims

1, a kind of Saw blade comprises Saw blade [30] and is arranged at the tooth [31] of a side that it is characterized in that: the front end at Saw blade [30] is provided with the weight [33] that is used for damping vibration.

2, Saw blade according to claim 1, it is characterized in that: described Saw blade [30] be set up in parallel as second band-like plate [51] of strengthening part, this Saw blade [30] is roughly the same with the shape of second band-like plate [51], and the front end of these two band-like plates and weight [1] fix and be one.