CN219139068U - Cutter head - Google Patents

Abstract

The utility model provides a cutter head, which comprises a cutter head base which is integrally in a disc shape, wherein a transmission mechanism for bearing driving torque and pushing force is arranged at the center of the cutter head base, and a crushing mechanism is arranged at the peripheral direction of the outer edge of the cutter head base; the crushing mechanism comprises a disc-shaped hob, the hob comprises a mandrel and a cutter body capable of rotating around the mandrel, and a raised cutting edge is arranged on the circumference of the cutter body; the spindle is fixed on the cutterhead base, and the plane of the central line of the spindle is parallel to the rotation central line of the cutterhead base. Has the following beneficial effects: by adopting a fracturing method, the hob blade and the rock do not generate friction due to relative movement, and the hob has long service life and low loss; the rolling and rock breaking are continuously carried out, the peripheral linear speed reaches more than 2 meters when the cutter head rotates, the efficiency is improved by more than 10 times, the rock breaking cost per cubic meter is reduced by more than one time, and the construction efficiency is high; the vibration is low, the rock around the groove section is not damaged, the groove section can be formed at one time, and the safety of the construction site is greatly improved.

Description

Cutter head

Technical Field

The utility model belongs to the field of tunneling machinery, and particularly relates to a cutterhead for a tunneling machine.

Background

In tunnel, culvert, pipe gallery and roadway construction, mechanical equipment is required to crush hard rock, and methods such as drill hole blasting, water jet cutting, toothless saw cutting, breaking hammer digging, milling and digging machine cutting and the like are generally adopted in the prior art. The crushing mechanism adopted by the prior art has the following defects:

1. the drilling and blasting method is long in time consumption and unsafe;

2. the breaking hammer and the hooking machine can only be used under open air conditions, and the space is insufficient in tunnel, culvert, pipe gallery and roadway construction;

3. the toothless saw has low efficiency and cannot work under the condition of complex conditions;

4. the milling and digging machine has low efficiency and high consumption under the working condition of crushing hard rock.

Disclosure of Invention

In order to overcome the defects and shortcomings of the prior art, the utility model provides a cutter head, which belongs to a hob cutter head, wherein the principle of breaking rock by the cutter head adopts a fracturing method, and hob cutting edges and the rock do not move relatively, so that the loss is low; the rolling is continuously carried out during working, the linear speed reaches more than 2 meters, and the construction efficiency is high; the vibration is low, the surrounding rock is not damaged, and the safety of the construction site is greatly improved.

The utility model provides the following technical scheme.

The cutter head comprises a cutter head base which is integrally in a disc shape, wherein a transmission mechanism for bearing driving torque and pushing force is arranged at the center of the cutter head base, and a crushing mechanism is arranged on the periphery of the cutter head base in the circumferential direction; the crushing mechanism comprises a disc-shaped hob, the hob comprises a mandrel and a cutter body capable of rotating around the mandrel, and a raised cutting edge is arranged in the circumferential direction of the cutter body; the spindle is fixed on the cutterhead base, and the plane of the central line of the spindle is parallel to the rotation central line of the cutterhead base.

Furthermore, according to the cutterhead provided by the utility model, the radially extending convex support is arranged on the circumference of the outer edge of the cutterhead base, and the mandrel is fixed on the support.

Further, according to the cutterhead provided by the utility model, the central line of the mandrel is parallel to the rotation central line of the cutterhead base.

Further, the cutter head provided by the utility model comprises a single-blade cutter with one blade arranged in the middle of the cutter body, a double-blade cutter with two blades arranged in the middle of the cutter body, and double-blade trimming cutters with one blade respectively arranged at two ends of the cutter body; the double-edge trimming hob, the double-edge hob and the single-edge hob are sequentially arranged along the rotating advancing direction of the cutterhead base; the axial length of the double-edge hob and the single-edge hob is equal to or smaller than the thickness of the cutterhead base; the axial length of the double-edge trimming hob is greater than the thickness of the cutterhead base, so that the cutting edges at the two ends of the cutter body protrude out of the cutterhead base along the central line of the mandrel.

Furthermore, the cutter head provided by the utility model is provided with a multi-prismatic scraper between the double-edge trimming hob and the double-edge hob.

Furthermore, according to the cutter head provided by the utility model, the double-edge trimming hob and the double-edge hob are arranged in pairs.

Furthermore, according to the cutterhead provided by the utility model, a plurality of groups of crushing mechanisms are arranged.

The cutterhead provided by the utility model has the following beneficial effects:

1. by adopting a fracturing method, the hob blade and the rock do not have friction generated by relative movement, so the hob has long service life and low loss;

2. the rock is broken by continuous rolling in working, the peripheral linear speed reaches more than 2 meters when the cutter head rotates, the efficiency is improved by more than 10 times compared with the prior art, the rock breaking cost per cubic meter is reduced by more than one time, and the construction efficiency is high;

3. the vibration is low during operation, the rock around the groove section is not damaged, the groove section can be molded at one time, and the safety of the construction site is greatly improved.

Drawings

The foregoing is merely an overview of the present utility model, and the present utility model is further described in detail below with reference to the accompanying drawings and detailed description.

Fig. 1 is a schematic diagram of a front view structure of a cutterhead provided by the utility model.

Fig. 2 is a schematic side view of a cutterhead according to the present utility model.

Wherein, the names corresponding to the reference numerals are:

doctor blades-2001 a,2001b,2001c;

single-blade hobs-2002A, 2002B,2002C;

double-edged hob-2003 A1, 2003A2, 2003B1, 2003B2, 2003C1, 2003C2;

double edge trimming hobs-2004 A1, 2004A2, 2004B1, 2004B2, 2004C1, 2004C2;

double-edged hob platens-2005 A1, 2005A2, 2005B1, 2005B2, 2005C1, 2005C2;

cutterhead base-2013.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

The structures, proportions, sizes, etc. of the present disclosure are shown and described only in conjunction with the present disclosure, and therefore should not be construed as limiting the scope of the utility model, which is defined by the appended claims, without any technical essential importance, however, any structural modifications, proportional changes, or dimensional adjustments should fall within the scope of the present disclosure without affecting the efficacy or achievement of the present utility model. Also, the terms such as "upper", "lower", "left", "right", "front", "rear", "middle" and "a" and the like are used in this specification for convenience of description, and are not intended to limit the scope of the present utility model, but rather to change or adjust the relative relationship thereof without substantially changing the technical content, and are considered to be within the scope of the present utility model.

The following examples are given by way of illustration only. Various embodiments may be combined and are not limited to only what is presented in the following single embodiment.

Referring to fig. 1 and 2, the cutterhead provided by the utility model comprises a cutterhead base 2013 which is integrally disc-shaped, wherein the cutterhead base 2013 has a certain thickness, and a transmission mechanism for bearing driving torque and pushing force from the outside is arranged at the center of a circle of the cutterhead base 2013. Preferably, the transmission mechanism may be a hole or a slot or a bracket, so long as it can connect the cutterhead base 2013 with an external power device and bear driving torque and radial pushing force; a crushing mechanism is arranged on the circumference of the outer edge of the cutterhead base 2013; the crushing mechanism comprises a disc-shaped hob, the hob comprises a mandrel and a cutter body capable of rotating around the mandrel, and a raised cutting edge is arranged in the circumferential direction of the cutter body; the spindle is fixed on the cutterhead base 2013, and the central line of the spindle, that is, the plane where the axis of the hob body rotates is parallel to the rotation central line of the cutterhead base 2013, that is, the vertical distance between the two ends of the spindle on the central line and the rotation central line of the cutterhead base 2013 is equal; the mandrel centerline may be inclined in the horizontal direction at the perspective shown in fig. 2.

In a further embodiment, in the cutter disc provided by the present utility model, a radially extending protruding bracket is disposed in a circumferential direction of an outer edge of the cutter disc base 2013, and the spindle is fixed on the bracket. It is clearly understood that the bracket may be integrally formed with the cutterhead base 2013 or may be separately manufactured and then assembled together.

In a further embodiment, the center line of the spindle is parallel to the rotation center line of the cutterhead base 2013.

In a further embodiment, the cutter head provided by the utility model comprises single- blade cutters 2002A,2002B and 2002C with one blade arranged in the middle of the cutter body; double-edge hobs 2003A1, 2003A2, 2003B1, 2003B2, 2003C1 and 2003C2 with two edges are arranged in the middle of the cutter body; double-edge trimming hobs 2004A1, 2004A2, 2004B1, 2004B2, 2004C1, 2004C2 with one edge are respectively arranged at the two ends of the cutter body; as shown in fig. 1, when the cutterhead base 2013 works, the double-edge trimming hob, the double-edge hob and the single-edge hob are rotated anticlockwise, and are sequentially arranged along the rotation advancing direction of the cutterhead base. The double-edged hob plates 2005A1, 2005A2, 2005B1, 2005B2, 2005C1, 2005C2 are provided outside the mandrels of the double-edged hob plates 2004A1, 2004A2, 2004B1, 2005B2, 2005C1, 2004C2, respectively. The axial lengths of the double-edge hob 2003A1, 2003A2, 2003B1, 2003B2, 2003C1, 2003C2 and the single- edge hob 2002A,2002B,2002C are equal to or smaller than the thickness of the cutterhead base 2013, so that the running track of the cutting edge of the double-edge hob is always within the thickness of the cutterhead base 2013; the axial length of the double-edge trimming hob 2004A1, 2004A2, 2004B1, 2004B2, 2004C1, 2004C2 is greater than the thickness of the cutterhead base 2013, so that the cutting edges at the two ends of the cutter body are protruded along the central line of the spindle, the running track of the cutting edges is outside the thickness of the disc base 2013, and the rock is crushed outside the cutterhead base 2013.

In a further embodiment, the cutter head provided by the utility model is further provided with multi-prismatic scrapers 2001A,2001B and 2001C, preferably triangular prism and quadrangular prism, between the double-edge trimming hob and the double-edge hob.

In a further embodiment, the cutter head provided by the utility model is characterized in that the double-edge trimming hob and the double-edge hob are arranged in pairs.

In a further embodiment, the cutter disc provided by the utility model is characterized in that the crushing mechanisms are arranged in a plurality of groups. Preferably, as shown in fig. 1, three groups of identical hobs and scrapers are mounted on the cutter head base 2013 in the circumferential direction, wherein the part a is a first group, the part B is a second group, and the part C is a third group.

When the cutterhead provided by the utility model works, under the drive of the driving torque provided by external power, the cutterhead base rotates along the circle center of the cutterhead base so as to drive the crushing mechanism to rotate along with the cutterhead base, and when the crushing mechanism contacts rock to be crushed, most of the weight of an external whole machine acts on the crushing device of the cutterhead. The hob almost has no cutting effect on the rock, the pushing force generated by the huge mass of the whole machine generates huge pressure on the rock through the hob blade, and the hob blade crushes and extrudes the rock to a certain depth to form dents. Along with the continuous rotation of the cutterhead, the double-edge trimming hob, the single-edge hob and the double-edge hob form a plurality of dents, rocks between the dents and the dents are sheared by horizontal component force generated by the edges of the hob, and along with the continuous rotation of the cutterhead, the double-edge trimming hob, the single-edge hob and the double-edge hob are continuously extruded and crushed under high-efficiency arrangement. The hob is responsible for breaking rock, the scraper is responsible for cleaning out broken rock fragments, the single-blade hob is centered, the bearing pressure is the biggest, the rock is firstly crushed to form a larger free surface, the double-blade hob is then continued to break the rock towards two sides, the double-blade trimming hob forms an inward (centered single-blade hob direction) broken rock, the rock breaking direction is no longer outwards diffused, and a smooth surface is formed. The scraper is behind the double-edge trimming hob, and the broken rock fragments are cleaned out along with the rotation of the cutterhead, so that the section of the groove is deepened gradually for forming.

The cutterhead provided by the utility model can be used for carrying out construction work on hard rock with the Prussian coefficient f more than 6, and also can be used for carrying out construction work on rock, quicksand and soil with the Prussian coefficient f less than 6; the rock breaking capacity is strong, the construction cost is low, the efficiency is high, compared with the prior art, the efficiency is improved by more than 10 times, and the rock breaking cost per cubic meter is reduced by more than one time; the shape of the cross section of the groove obtained by construction is regular, the cross section of the groove can be formed at one time, and the subsequent complicated work of shaping and shaping the cross section of the groove is not needed.

It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The cutter disc provided by the utility model is described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (10)

1. The cutter head comprises a cutter head base which is integrally in a disc shape, and a transmission mechanism for bearing driving torque and pushing force is arranged at the circle center of the cutter head base; the crushing mechanism comprises a disc-shaped hob, the hob comprises a mandrel and a cutter body capable of rotating around the mandrel, and a raised cutting edge is arranged in the circumferential direction of the cutter body; the spindle is fixed on the cutterhead base, and the plane of the central line of the spindle is parallel to the rotation central line of the cutterhead base.

2. A cutterhead according to claim 1, wherein radially extending raised brackets are provided circumferentially about the periphery of the cutterhead base, and the spindle is secured to the brackets.

3. A cutterhead according to claim 1, wherein the centre line of the spindle is parallel to the centre line of rotation of the cutterhead base.

4. A cutterhead according to claim 2, wherein the centre line of the spindle is parallel to the centre line of rotation of the cutterhead base.

5. A cutterhead according to any one of claims 1 to 4 wherein the hob comprises a single-bladed hob with one blade in the middle of the cutter body, a double-bladed hob with two blades in the middle of the cutter body, and double-bladed trimming hobs with one blade at each end of the cutter body; the double-edge trimming hob, the double-edge hob and the single-edge hob are sequentially arranged along the rotating advancing direction of the cutterhead base; the axial length of the double-edge hob and the single-edge hob is equal to or smaller than the thickness of the cutterhead base; the axial length of the double-edge trimming hob is greater than the thickness of the cutterhead base, so that the cutting edges at the two ends of the cutter body protrude out of the cutterhead base along the central line of the mandrel.

6. A cutterhead in accordance with claim 5 wherein a multi-prismatic doctor blade is also provided between the double-bladed edge cutter and the double-bladed cutter.

7. The cutterhead of claim 6 wherein the double edge trimming hobs and double edge hobs are arranged in pairs.

8. The cutterhead of claim 5 wherein the double edge trimming hobs and double edge hobs are arranged in pairs.

9. A cutterhead in accordance with claim 7 wherein said crushing means is provided in a plurality of groups.

10. A cutterhead in accordance with claim 8 wherein said crushing means is provided in a plurality of groups.

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