CN211924160U - Novel 3 heavy load 12 cun formula shaft hobbing cutter in pairs - Google Patents

Abstract

The utility model belongs to the technical field of the shaft hobbing cutter and specifically relates to a novel 3 12 cun formula shaft hobbing cutter in pairs of heavily carrying is related to, it includes main shaft, big end cover, gland, cutter body, bearing ring, flat bearing, floating seal ring, sealed O type circle, roller, balanced piston, tip cap and alloy tooth, wherein, flat bearing install on the main shaft and link to each other with the main shaft, the main shaft on be provided with roller mounting groove, the roller install in main epaxial roller mounting groove department, the utility model provides a novel 3 little 12 cun formula shaft hobbing cutter in pairs of heavily carrying can be very big increase to the crushing efficiency of rock, make the sword tooth degree of penetration increase one time, broken rock efficiency promotes one time, very big user demand who has satisfied people.

Description

Novel 3 heavy load 12 cun formula shaft hobbing cutter in pairs

Technical Field

The utility model belongs to the technical field of the shaft hobbing cutter and specifically relates to a novel 3 heavy load 12 cun formula shaft hobbing cutter in pairs is related to.

Background

The disk cutter rock breaking refers to a rock drilling method for breaking rock by using a disk-shaped rolling tool with edges, which is a basic method for breaking harder rock by a rock heading machine or a raise boring machine, and the working principle of the method can be understood as follows: during tunneling, a groove is firstly extruded in a rock by the disc-shaped hob ring, an initial tension-damaged crack is generated around the groove, the well is constantly and inertially inserted by a cutter, the wedge-shaped surface of the hob ring plays a role in shearing and damaging the rock on two sides of the hob ring, the initial tension-damaged crack can continuously and rapidly expand along the tangential direction of the rock under the action of shearing force, the rock cracks between adjacent cutters can generate mutual influence and generate further tension damage, and a rock ridge between adjacent cutting grooves can generate larger rock blocks to be peeled off under the tension damage. The disc cutter installed on the cutter head is pressed on a rock surface under the action of the jack, and along with the rotation of the cutter head, the disc cutter rotates around the central shaft of the cutter head on one hand and rotates around the axis of the disc cutter on the other hand. The disc cutter cuts a series of concentric circular grooves on the face of the roller under the action of thrust and torque of the cutter head. When the thrust exceeds the strength of the rock, the rock under the cutter point of the disc cutter is directly crushed, and the cutter point penetrates into the rock to form a crushing area and radial cracks; and (2) further pressurizing, when the distance S between the hobbing cutters meets a certain condition, the cracks in the rocks between the adjacent hobbing cutters extend and are communicated with each other to form rock fragments to collapse, the disc hobbing cutters finish a rock breaking process, the structure of the disc hobbing cutters is firm, the rock breaking efficiency is high, the disc hobbing cutters are not easy to wear, the disc hobbing cutters are common tools for mechanically breaking hard rocks with large sections, the diameter of the hobbing cutters is 400 plus one hour and 500mm, the cutting edge angle is about 60 degrees, the positive pressure applied on each hobbing cutter is determined according to the rocks and is about 50-200kN, the traction force is 1/10-1/15 of the positive pressure, and the rolling linear speed of the hobbing cutters is below. The hob is generally made of high-strength wear-resistant alloy steel, sometimes the hob is embedded with hard alloy teeth, and several or even dozens of hobs are often adopted to work simultaneously according to the size of a tunneling sectionThe indentations of the hobs are distributed in concentric circles, the distance between the indentations depends on the properties of the rock, the most energy consumption is saved, the hobs at the edge part have the heaviest load, and the number of the hobs is increased.

The disk cutter often can not satisfy people's user demand because the progress of the whole engineering is influenced to its self problem of breaking rock inefficiency when breaking rock, and at the broken rock in-process of normal disk cutter, according to the actual broken rock effect of operating personnel's observation after discovery, the speed of the broken rock efficiency of hobbing cutter is directly proportional with the sword tooth depth of entry rock, therefore, how to improve the problem that the degree of depth of entry rock of hobbing cutter sword tooth becomes to solve for people's urgent need.

Disclosure of Invention

Aiming at the problems that the prior disc cutter has low rock breaking efficiency and is easy to influence the progress of the whole engineering and can not meet the use requirements of people when in rock breaking operation, the utility model provides a novel 3-degree heavy-load 12-inch paired shaft cutter, which adopts the following technical proposal that the novel 3-degree heavy-load 12-inch paired shaft cutter comprises a main shaft, a big end cover, a gland, a cutter body, a bearing ring, a plane bearing, a floating seal ring, a seal O-shaped ring, a roller, a balance piston, a small end cover and alloy teeth, wherein the plane bearing is arranged on the main shaft and is connected with the main shaft, the main shaft is provided with a roller mounting groove, the roller is arranged at the roller mounting groove on the main shaft, the bearing ring is arranged outside the roller and is connected with the roller, the cutter body is arranged at the outer positions of the plane bearing and the bearing ring and is respectively connected with the plane bearing and the bearing ring, the balance piston is arranged at the end part of the lubricating oil channel and tightly connected with the lubricating oil channel, a tooth hole for mounting alloy teeth is formed in the cutter body, the lower parts of the alloy teeth are embedded in the tooth hole, and the ring pitch of the alloy teeth is twice of the tooth diameter;

a crushing tooth socket for crushing rocks is arranged between every two alloy teeth on the cutter body;

the specific size of the roller is phi 25x 25;

the alloy teeth are annularly arranged on the cutter body;

the cutter body can be provided with a six-combination golden tooth ring shape;

five groups of alloy tooth rings can be arranged on the cutter body;

the lower parts of the alloy teeth are in interference fit with the tooth holes;

the utility model has the advantages that: the utility model discloses the structure global design science, the utility model provides a novel 3 heavy load 12 cun twin shaft hobbing cutter can be very big increase to the crushing efficiency of rock, specifically say, the utility model discloses an improve and bear, reach the heavy load requirement, used bigger roller, specific size is 25x25, and the ring pitch of the alloy tooth on cutter body surface directly becomes 2 times pitch-row by single pitch-row, and this change directly makes cutter tooth figure reduce half, makes the cutter tooth degree of penetration increase one time, and broken rock efficiency promotes one time, very big user demand who has satisfied people.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a structural diagram of a six-combination golden-tooth annular hob body of the utility model;

FIG. 3 is a structural diagram of a hob with five groups of ring-shaped alloy teeth arranged on the body of the utility model;

FIG. 4 is a schematic diagram showing the positional correspondence between a hob with a six-set golden-tooth ring shape arranged on the hob body and a hob with a five-set alloy-tooth ring shape arranged on the hob body when the hobs are assembled;

FIG. 5 is a perspective view of a six-combination golden-toothed ring-shaped hob body of the present invention;

FIG. 6 is a perspective view of a hob structure with five sets of ring-shaped alloy teeth arranged on the body of the utility model;

FIG. 7 is a view of a hob mounting block provided in the present invention;

the reference numbers in the figures are: 1-main shaft, 2-big end cover, 3-gland, 4-cutter body, 5-bearing ring, 6-plane bearing, 7-floating seal ring, 8-sealing O-shaped ring, 9-roller, 10-balance piston, 11-small end cover, 12-alloy tooth, 13-lubricating oil channel and 14-crushing tooth groove.

Detailed Description

Specific example 1: the utility model discloses a core is when carrying out the operation of breaking rock to current disk cutter, and it is inefficient to break rock, influences the progress of whole engineering easily, can not satisfy people's user demand's problem and provide a novel 12 cun in pairs formula shaft hobs of heavy duty, for make this technical field's personnel understand better the technical scheme of the utility model, it is right with concrete implementation mode to combine the description drawing below the utility model makes further detailed description, it needs to explain, is called "being fixed in" or "setting up in" another component when the component, and it can be directly or connect between on another component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "left" and "right" used in this specification to denote orientation are used with reference to a particular structure shown in the drawings, and do not constitute a limitation on the structure. As shown in the attached figures 1-4 of the specification, a novel 3-degree heavy-load 12-inch paired shaft hob mainly comprises a main shaft 1, a large end cover 2, a gland 3, a hob body 4, a bearing ring 5, a plane bearing 6, a floating seal ring 7, a seal O-shaped ring 8, a roller 9, a balance piston 10, a small end cover 11 and alloy teeth 12, wherein the plane bearing 6 is fixedly installed on the main shaft 1, roller installation grooves for installing the roller are formed in the main shaft 1 at the two sides of the plane bearing 6, the roller 9 is installed in the roller installation grooves in the main shaft 1, the specific size of the roller 9 is selected to be phi 25x25 when the novel 3-degree heavy-load 12-inch paired shaft hob is specifically installed and used, the bearing ring 5 is installed at the outer position of the roller 9 and is connected with the roller 9, the bearing ring 4 is installed at the outer positions of the plane bearing 6 and the hob body 5 and is respectively connected with the plane bearing 6 and, an O-shaped ring 8 for sealing is arranged outside a floating seal ring 7, a small end cover 11 is arranged at the right side part of a main shaft 1, the floating seal ring 7 and the sealing O-shaped ring 8 are pressed and mounted at the position of a cutter body 4 between the main shaft 1, a large end cover 2 is arranged at the left side part of the main shaft 1, the floating seal ring 7 and the sealing O-shaped ring 8 are pressed and mounted at the position of the cutter body 4 between the main shaft 1, a gland 3 is arranged between the large end cover 2 and the cutter body 4, at the moment, the large end cover 2 and the small end cover 11 seal a bearing ring 5, a plane bearing 6 and a roller 9 in a cavity formed between the cutter body 4 and the main shaft 1 through the floating seal ring 7 and the sealing O-shaped ring 8, a lubricating oil channel 13 is arranged in the main shaft 1, lubricating oil for lubricating the plane bearing 6 and the roller 9 is poured in the lubricating oil channel 13, the outer circumferential surface of the cutter body 4 is provided with a tooth hole for mounting the alloy teeth 12, the lower parts of the alloy teeth 12 are embedded in the tooth hole, the alloy teeth 12 are annularly arranged on the cutter body 4, six combined golden tooth rings can be arranged on the cutter body 4, five groups of alloy tooth rings can also be arranged, a crushing tooth socket 14 for crushing rocks is arranged between every two alloy teeth 12 on the cutter body 4, when the cutter is specifically used, in order to improve the bearing and achieve the heavy load requirement, a larger roller 9 is used, the specific size is phi 25x25, the annular distance of the alloy teeth 12 on the surface of the cutter body 4 is directly changed from tooth pitch to 2-time tooth diameter, the change directly reduces the number of single-time teeth by half, the penetration degree of the cutter teeth is doubled, the efficiency is doubled, namely compared with the rock crushing efficiency of a single-time cutter before the structure change, meanwhile, in order to crush the rocks in the tooth socket 14, the utility model discloses a concrete assembly process is as follows, assemble the core wrap part (main shaft part) at first, install the flat bearing 6 on the boss shaft shoulder position on the main shaft 1, then place two rows of circumference of bearing rollers 9 in parallel at the roller mounting groove position on the main shaft 1, then sleeve the bearing ring 5, inlay the alloy teeth 12 in the tooth hole after drilling in advance on the cutter body 4 (namely the tooth hole installed by the alloy teeth 12) through cold pressing, heat cutter body 4 to 100 ℃, hot core cladding part (main shaft part), then, pack into in proper order and float seal ring 7, sealed O type circle 8 to compress tightly it through big end cover 2 and little end cover 11, then adjust the starting torque through screwing gland 3, at last, in lubricating oil duct 13 filling lubricating oil to it is airtight with it to pack into balanced piston 10, up to this point the utility model discloses an assembly operation, above show and described the utility model discloses a basic principle, leading features and advantage. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims (7)

1. A novel 3-degree heavy-load 12-inch paired shaft hob is characterized by comprising a main shaft, a large end cover, a gland, a hob body, a bearing ring, a planar bearing, a floating seal ring, a sealing O-shaped ring, a roller, a balance piston, a small end cover and alloy teeth, wherein the planar bearing is installed on the main shaft and is connected with the main shaft, the main shaft is provided with a roller installation groove, the roller is installed at the roller installation groove on the main shaft, the bearing ring is installed outside the roller and is connected with the roller, the hob body is installed at the outer positions of the planar bearing and the bearing ring and is respectively connected with the planar bearing and the bearing ring, the floating seal ring is installed at the position, close to the end part, of the left side and the right side of the main shaft, the O-shaped ring for sealing is arranged outside the floating seal ring, the small end cover is installed at the position of the right side of the main shaft and presses the floating, the large end cover is arranged at the left side of the main shaft, the floating seal ring and the sealing O-shaped ring are arranged at the position, between the cutter body and the main shaft, of the cutter body in a pressing mode, the pressing cover is arranged between the large end cover and the cutter body, a lubricating oil channel is arranged in the main shaft, the balance piston is arranged at the end of the lubricating oil channel and is tightly connected with the lubricating oil channel, a tooth hole used for mounting alloy teeth is formed in the cutter body, the lower portions of the alloy teeth are embedded in the tooth hole, and the annular distance of the alloy teeth is twice of the tooth diameter.

2. The novel 3-degree heavy-load 12-inch paired shaft hob according to claim 1, is characterized in that a crushing tooth socket for crushing rocks is arranged between every two alloy teeth on the hob body.

3. The novel 3-degree heavy-load 12-inch paired shaft hob according to claim 1, characterized in that the specific size of the roller is phi 25x 25.

4. The novel 3-degree heavy-duty 12-inch paired shaft hob according to claim 1, wherein the alloy teeth are annularly arranged on the hob body.

5. The novel 3-degree heavy-duty 12-inch paired shaft hob according to claim 1, characterized in that the hob body can be provided with six combined golden-toothed rings.

6. The novel 3-degree heavy-duty 12-inch paired shaft hob according to claim 1, characterized in that five groups of alloy tooth rings can be arranged on the hob body.

7. The novel 3-degree heavy-load 12-inch paired shaft hob according to claim 1, characterized in that the lower parts of the alloy teeth are in interference fit with the tooth holes.

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