CN216195072U - Cutting tool for TRD construction method - Google Patents
Cutting tool for TRD construction method Download PDFInfo
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- CN216195072U CN216195072U CN202122405253.5U CN202122405253U CN216195072U CN 216195072 U CN216195072 U CN 216195072U CN 202122405253 U CN202122405253 U CN 202122405253U CN 216195072 U CN216195072 U CN 216195072U
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Abstract
The utility model relates to a cutting tool for a TRD construction method, which comprises a tool rest and a tool bit, wherein the tool rest comprises a first trapezoidal plate, the top of the tool rest is provided with a tool groove in a penetrating manner along the thickness direction of the tool rest, the bottom of the tool bit is arranged in the tool groove and welded with the tool rest, the top of the tool bit protrudes out of a notch of the tool groove, the front end of the tool bit is provided with a front edge surface, the top of the tool bit is provided with a rear edge surface, the front edge surface is connected with the rear edge surface, and the front end of the tool bit protrudes out of the tool grooveThe front edge face comprises a first front edge face which is positioned at the lower part of the front edge face, and the included angle between the first front edge face and the front edge face of the tool rest is theta1，θ1Is acute angle. The cutter head can better resist cutting impact, and can reduce cutting resistance borne by the cutter head when the cutter head cuts a stratum, so that abrasion to the cutter rest is reduced, load to a saw chain is reduced, and possibility of equipment failure is reduced.
Description
Technical Field
The utility model relates to the technical field of complex stratum cutting, in particular to a cutting tool for a TRD construction method.
Background
The TRD construction method machine technology originated in japan in the 90 s. In 2009, the TRD construction machine is introduced from Japan to be used for the construction of underground cement soil mixing walls of deep foundation pits. The construction method is that a plurality of cutter rows are arranged on a saw chain according to a certain combination, and a power transmission case drives the cutter rows on the saw chain to move circularly to cut soil body for grooving, so that the cement soil mixing wall is formed. The cutter row on the saw chain is a cutting tool provided with a plurality of cutting cutters.
The cutter of the TRD construction method generally comprises a single cutter rest and cutting cutter heads arranged on two sides of the cutter rest, alloy cutter heads of the structure are arranged on two sides of the upper end of a trapezoid cutter rest, and the cutting capability of the alloy cutter heads can only cut soft soil mudstone with a single-shaft compressive strength smaller than 5 Mpa. The Chinese patent with the publication number of CN203866892U provides a TRD construction method cutting tool for construction of gravel and rock formations, and the TRD construction method cutting tool can cut weathered rock formations with the uniaxial compressive strength of less than 10 Mpa. However, in complex strata, particularly in the construction of combined strata such as muddy clay, fine sand, medium coarse sand mixed pebble, strongly weathered muddy siltstone, and moderately weathered muddy siltstone, the problems of large cutting resistance of a cutter, serious abrasion of a tool rest and the like, which are easy to cause the aggravation of saw chain load and equipment accidents are still existed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: aiming at the problems that in the prior art, in a complex stratum, a cutting tool of a TRD construction method has large cutting resistance and is easy to abrade a tool rest, so that the saw chain load is aggravated easily and equipment accidents occur easily, the cutting tool for the TRD construction method is provided.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a cutting tool for a TRD construction method comprises a tool rest and a tool bit, wherein the tool rest comprises a first trapezoidal plate, the top of the tool rest is provided with a tool groove in a penetrating mode along the thickness direction of the tool rest, the bottom of the tool bit is arranged in the tool groove and welded with the tool rest, the top of the tool bit protrudes out of a notch of the tool groove, the front end of the tool bit is provided with a front edge face, the top of the tool bit is provided with a rear edge face, the front edge face is connected with the rear edge face, the front end of the tool bit protrudes out of a front end face of the tool rest, the front edge face comprises a first front edge face, the first front edge face is located on the lower portion of the front edge face, and an included angle theta between the first front edge face and the front end face of the tool rest is1，θ1Is acute angle.
The front blade face refers to the face facing the soil and cutting the soil layer in the forward direction, and the rear blade face refers to the face cutting the soil layer in the lateral direction. The front blade surface is positioned at the front end of the cutter head, and the rear blade surface is positioned at the top of the cutter head.
Through letting the outstanding of the front end of tool bit the front end face, the thickness of tool bit will be greater than the thickness of knife rest promptly, compares in prior art, through reinforcing the tool bit for the anti impact of cutting that the tool bit can be better, and then make harder stratum such as the well coarse sand muddy cobble that the front edge face of tool bit can be safer, well stroke argillaceous siltstone carry out powerful cutting. On the basis of enhancing the cutter head, the front end of the cutter head is provided with a position theta which is equal to the front end surface of the cutter frame1The first front blade face is an inclined face, when the cutter head cuts a stratum, partial acting force of the cutter head is decomposed in the direction perpendicular to the advancing direction of the cutter head, so that cutting resistance borne by the cutter head when the cutter head cuts the stratum is reduced, abrasion to the cutter rest is reduced, load to a saw chain is reduced, and possibility of equipment failure is reduced.
Preferably, 0 < theta1Less than or equal to 25 degrees, and can reduce the cutting force applied when the cutter head cuts the stratumCutting resistance and reducing damage to the cutter.
Preferably, the rear edge surface comprises a first rear edge surface, the first rear edge surface is positioned at the rear end of the top of the tool bit, and an included angle theta is formed between the first rear edge surface and the rear end face of the tool rest2，θ2The cutting edge is an acute angle, so that silty clay can be prevented from being silted on the edge surface of the cutter head, and the cutting resistance is reduced.
Preferably, 65. ltoreq. theta.2The angle of less than 90 degrees can better prevent silty clay from silting on the rear blade surface of the cutter head, thereby better reducing cutting resistance.
Preferably, the front edge face further comprises a second front edge face, the rear edge face further comprises a second rear edge face, one side of the second rear edge face is connected with the first rear edge face, the other side of the second rear edge face is vertically connected with one side of the second front edge face, and the other side of the second front edge face is connected with the first front edge face.
Through the arrangement, the second rear edge face is vertically connected with the second front edge face, so that the strength of the top of the front end of the cutter head is high, and the cutter head can better resist the impact of cutting.
Preferably, the joint of the first front edge face and the second front edge face is positioned on the plane of the cutter groove notch, so that the strength of the cutter head when cutting the stratum can be ensured while the capacity of cutting the stratum is enhanced.
Preferably, the top of the first trapezoidal plate is provided with a second trapezoidal plate, the slope of the second trapezoidal plate is greater than that of the first trapezoidal plate, the bottom of the second trapezoidal plate is connected with the top of the first trapezoidal plate, and the knife groove is formed in the top of the second trapezoidal plate.
Preferably, the cutter groove is a rectangular groove, so that the processing is convenient.
Preferably, the top of the cutter head is a triangular section pointed top, so that the capability of the cutter head for cutting the stratum can be further enhanced.
In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:
1. the utility modelAccording to the cutting tool for the TRD construction method, the front end of the tool bit protrudes out of the front end face to reinforce the tool bit, so that the tool bit can better resist cutting impact, and further, the front edge face of the tool bit can safely and powerfully cut harder strata such as medium and coarse sand mixed pebbles, medium and cemented siltstones and the like. On the basis of enhancing the cutter head, the front end of the cutter head is provided with a position theta which is equal to the front end surface of the cutter frame1The first front blade face is an inclined face, when the cutter head cuts a stratum, partial acting force of the cutter head is decomposed in the direction perpendicular to the advancing direction of the cutter head, so that cutting resistance borne by the cutter head when the cutter head cuts the stratum is reduced, abrasion to the cutter rest is reduced, load to a saw chain is reduced, and possibility of equipment failure is reduced.
2. The cutting tool for the TRD construction method is characterized in that the rear end of the top of the tool bit is provided with a cutter head which forms a theta with the rear end surface of the tool rest2The first back blade surface inclined at the acute angle can prevent silty clay from silting on the blade surface of the cutter head, thereby reducing cutting resistance.
Drawings
Fig. 1 is a front sectional view of a cutter for a TRD working method described in embodiment 1;
fig. 2 is a side view of a cutter for the TRD method described in embodiment 1;
FIG. 3 is θ in example 11And theta2A schematic diagram of (a);
FIG. 4 is a front view of the blade holder in embodiment 1;
FIG. 5 is a side view of the tool holder in embodiment 1;
FIG. 6 is a front view of a cutter head of the cutter holder in embodiment 1;
fig. 7 is a side sectional view of a tool tip of the tool holder of embodiment 1.
Icon: 1-a cutter head; 11-a cutter body; 12-a projection; 13-a first trailing edge face; 14-a first leading edge face; 15-a second trailing edge face; 16-a second leading edge facet; 2-a tool rest; 21-a first trapezoidal plate; 22-a second trapezoidal plate; 23-a knife slot; 24-a front end face; 25-rear end face.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Example 1
The present embodiment provides a cutting tool for a TRD method, referring to fig. 1 to 7, including a tool post 2 and a tool bit 1, wherein the tool post 2 includes a first trapezoidal plate 21, a tool groove 23 is formed through the top of the tool post 2 in a thickness direction of the tool post 2, the bottom of the tool bit 1 is disposed in the tool groove 23 and welded to the tool post 2, the top of the tool bit 1 protrudes from a notch of the tool groove 23, the front end of the tool bit 1 has a front edge surface, the top of the tool bit 1 has a rear edge surface, the front edge surface is connected to the rear edge surface, the front end of the tool bit 1 protrudes from a front end surface 24 of the tool post 2, the front edge surface includes a first front edge surface 14, the first front edge surface 14 is located below the front edge surface, and an included angle θ between the first front edge surface 14 and the front end surface 24 of the tool post 2 is provided1，θ1Is acute angle.
Wherein, the front blade face refers to the soil facing face and the face for cutting the soil layer in the positive direction, and the front blade face is positioned at the front end of the cutter head 1, such as the right end face in fig. 7; the rear facet refers to the facet that cuts the earth laterally, the rear facet being located at the top of the cutter head 1, as in fig. 7. As shown in FIG. 3, for ease of viewing, the corresponding line segment is extended and marked by a dashed line θ1And theta2. As can be seen in FIGS. 3-4, θ1The included angle between the right end surface of the tool rest 2 and the first front edge surface 14 is shown; theta2Which is the angle between the left end surface of the tool holder 2 and the first rear edge surface 13.
Through the outstanding of the front end that lets tool bit 1 the front end face 24, the thickness of tool bit 1 will be greater than the thickness of knife rest 2 promptly, compares in prior art, through reinforcing tool bit 1 for the impact of anti cutting that tool bit 1 can be better, and then makes harder stratum such as the middle gritty sand cobble that the front edge face of tool bit 1 can be safer, well stroke muddy sand siltstone carry out the brute force cutting. In the reinforced knifeOn the basis of the head 1, the front end of the tool bit 1 is provided with a front end surface 24 which forms theta with the tool rest 21The first front edge face 14 is inclined, and the first front edge face 14 is an inclined face, so that when the cutter head 1 cuts a stratum, part of acting force is decomposed in the direction perpendicular to the advancing direction of the cutter head 1, the cutting resistance borne by the cutter head 1 when the cutter head 1 cuts the stratum is further reduced, the abrasion to the cutter frame 2 is further reduced, the load to a saw chain is reduced, and the possibility of equipment failure is reduced.
As a preferred embodiment, as shown in fig. 5-6, the cutting head 1 is an integral component, and the lower portion thereof is a cutting body 11, the cutting body 11 is inserted into the cutting groove 23 of the tool holder 2 and coupled with the cutting groove 23, and is welded with the cutting groove 23, as shown in fig. 2, so that the cutting head 1 and the tool holder 2 are integrally formed. The top of the cutter head 1 is provided with a protruding part 12, and the protruding part 12 protrudes out of the opening of the cutter groove 23. As shown in fig. 2, the protrusion 12 is a triangular section peak, but of course, a trapezoidal section peak or the like may be used, and by providing the protrusion 12, as shown in fig. 5, the overall strength of the cutter head 1 can be enhanced, and the protrusion 12 protrudes upward from the opening of the cutter groove 23, and at the same time, the triangular section peak or the like can enhance the capability of the cutter head 1 to cut the ground.
In this embodiment, the rear edge surface includes a first rear edge surface 13, the first rear edge surface 13 is close to the rear end of the tool bit 1, and the first rear edge surface 13 and the rear end surface 25 of the tool holder 2 form an included angle θ2，θ2Is acute angle. As shown in FIG. 2, the rear end of the top of the tool bit 1 is provided with a rear end surface 25 which is in a theta relationship with the rear end surface 25 of the tool holder 22A first rear edge surface 13 inclined at an acute angle, the rear end surface 25 of the tool holder 2 being the end surface located behind the tool holder 2 when the tool advances, i.e. the left end surface of the tool holder 2 in fig. 2, the angle θ between the first rear edge surface 13 and the rear end surface 252Theta is 65-theta2The angle between the head and the bottom surface of the cutter head 1 is less than 25 degrees and more than 0 degree, and the inclined plane is arranged towards the upper left. By providing the first rear edge surface 13, silty clay can be prevented from stagnating at the rear edge surface of the cutter head 1, and cutting resistance can be reduced.
Specifically, as shown in FIG. 2, the leading edge facet further includes a second leading edge facet 16, and the trailing edge facet further includesThe left side of the first back edge surface 13 is connected with the left end surface of the tool bit 1, the right side of the first back edge surface 13 is connected with the left side of the second back edge surface 15, the right side of the second back edge surface 15 is vertically connected with the upper side of the second front edge surface 16, the lower side of the second front edge surface 16 is connected with the upper side of the first front edge surface 14, and the lower side of the first front edge surface 14 is positioned on the plane of the groove bottom of the tool groove 23. By adopting the structure of the tool bit 1, the strength of the top of the front end of the tool bit 1 is higher, so that the tool bit 1 can better resist the impact of cutting. And more preferred choices are: the joint of the first front edge surface 14 and the second front edge surface 16 is positioned on the plane where the notch of the cutter groove 23 is positioned, namely, the first front edge surface 14 corresponds to the cutter body 11, so that the capability of cutting the stratum is enhanced, the strength of the cutter head 1 when cutting the stratum can be ensured, and the cutter head 1 is prevented from being broken when cutting the stratum. As shown in fig. 2, the angle between the first front edge surface 14 and the front end surface 24 of the holder 2 is preferably 0 ≦ θ1Not more than 25 degrees, set up towards the right side below, can will reduce the cutting resistance that receives when tool bit 1 cuts the stratum to reduce the damage to the cutter when cutting the stratum.
The tool holder 2 may employ only the first trapezoidal plate 21, and the tool groove 23 may be provided at the center of the top of the first trapezoidal plate 21, and the tool groove 23 may employ a rectangular groove. In this embodiment, as shown in fig. 1 to 4, the second trapezoidal plate 22 is further disposed on the top of the first trapezoidal plate 21, the slope of the second trapezoidal plate 22 is greater than the slope of the first trapezoidal plate 21, the bottom of the second trapezoidal plate 22 is connected to the top of the first trapezoidal plate 21, and the two trapezoidal plates have the same size, that is, as shown in fig. 3, from bottom to top, the size of the tool rest 2 is gradually reduced, so that the cutting resistance applied to the tool rest 2 can be reduced, the tool rest 2 is also of an integrally formed structure, and the concave groove is located in the middle of the top of the second trapezoidal plate 22.
The cutting tool for the TRD construction method can be used for cutting construction of complex strata, the front end of the tool bit 1 is provided with a first inclined front edge face 14 and a second inclined front edge face 16, the rear end of the top of the tool bit 1 is provided with a second inclined rear edge face 15, the top face of the front end of the top of the tool bit 1 is the second rear edge face 15 connected with the second front edge face 16 and the first rear edge face 13, the top of the whole tool bit 1 protrudes out of the tool rest 2, the front end of the tool bit 1 protrudes out of the front end face 24 of the tool rest 2, the thickened tool bit 1 can better resist cutting impact, the front edge face of the tool bit 1 can safely cut harder strata such as medium and coarse sand mixed pebbles and medium-oxidized argillaceous sills with uniaxial compressive strength smaller than 15Mpa, the rear face of the tool bit 1 has a better effect on preventing silty clay from being stagnated on the edge face of the tool bit 1 and reducing cutting resistance, and further solves the problems of the existing tools: the problem that the saw chain load is aggravated and equipment accidents occur due to serious abrasion of the tool rest 2 and the like caused by large cutting resistance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A cutting tool for a TRD construction method comprises a tool rest (2) and a tool bit (1), the tool rest (2) comprises a first trapezoidal plate (21), a tool groove (23) penetrates through the top of the tool rest (2) along the thickness direction of the tool rest (2), the bottom of the cutter head (1) is arranged in the cutter groove (23) and is welded with the cutter frame (2), the top of the cutter head (1) protrudes out of the notch of the cutter groove (23), the front end of the cutter head (1) is provided with a front edge surface, the top of the cutter head (1) is provided with a rear edge surface, the front edge surface is connected with the rear edge surface, characterized in that the front end of the cutter head (1) protrudes out of the front end surface (24) of the cutter frame (2), said leading edge face comprising a first leading edge face (14), said first leading edge face (14) being located below said leading edge face, the included angle between the first front edge surface (14) and the front end surface (24) of the tool rest (2) is theta.1，θ1Is acute angle.
2. The cutting tool for the TRD construction method according to claim 1, wherein 0 < θ >1≤25°。
3. The cutting tool for the TRD working method according to claim 1, wherein the rear edge face includes a first rear edge face (13), and the first rear edge faceThe rear edge surface (13) is positioned at the rear end of the top of the tool bit (1), and the included angle between the first rear edge surface (13) and the rear end surface (25) of the tool rest (2) is theta2，θ2Is acute angle.
4. The cutting tool for the TRD working method according to claim 3, wherein θ is 65 ≦ θ2﹤90°。
5. The cutting tool for the TRD construction method according to claim 3, wherein the front edge face further comprises a second front edge face (16), the rear edge face further comprises a second rear edge face (15), one side of the second rear edge face (15) is connected with the first rear edge face (13), the other side of the second rear edge face is vertically connected with one side of the second front edge face (16), and the other side of the second front edge face (16) is connected with the first front edge face (14).
6. The cutting tool for the TRD working method according to claim 5, wherein the junction of the first front edge face (14) and the second front edge face (16) is located on a plane where the notch (23) of the cutter groove (23) is located.
7. The cutting tool for the TRD working method according to any one of claims 1 to 6, wherein the first trapezoidal plate (21) has a second trapezoidal plate (22) at the top, the slope of the second trapezoidal plate (22) is greater than that of the first trapezoidal plate (21), the bottom of the second trapezoidal plate (22) is connected to the top of the first trapezoidal plate (21), and the cutter groove (23) is formed at the top of the second trapezoidal plate (22).
8. The cutting tool for the TRD working method according to claim 7, wherein the cutter groove (23) is a rectangular groove.
9. The cutting tool for the TRD working method according to claim 7, wherein the top of the cutter head (1) is a triangular section pointed top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122405253.5U CN216195072U (en) | 2021-09-30 | 2021-09-30 | Cutting tool for TRD construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122405253.5U CN216195072U (en) | 2021-09-30 | 2021-09-30 | Cutting tool for TRD construction method |
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| Publication Number | Publication Date |
|---|---|
| CN216195072U true CN216195072U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122405253.5U Active CN216195072U (en) | 2021-09-30 | 2021-09-30 | Cutting tool for TRD construction method |
Country Status (1)
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|---|---|
| CN (1) | CN216195072U (en) |
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2021
- 2021-09-30 CN CN202122405253.5U patent/CN216195072U/en active Active
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