CN217784017U

CN217784017U - Raise hob with rolling thrust bearing structure

Info

Publication number: CN217784017U
Application number: CN202222085237.7U
Authority: CN
Inventors: 汪学军; 沈劲松; 何国勇; 胡敏; 汪杨志; 曾华; 张振
Original assignee: Hubei Helilai Precision Forging Technology Co ltd; Hubei Minglilai Alloy Drilling Tool Co ltd
Current assignee: Hubei Helilai Precision Forging Technology Co ltd; Hubei Minglilai Alloy Drilling Tool Co ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2022-11-11
Anticipated expiration: 2032-08-09

Abstract

The utility model discloses a raise hob with a rolling thrust bearing structure, which comprises a hob wheel body, a hob cutter shaft, a hob locking bearing and a rolling thrust bearing structure, wherein the hob cutter shaft is positioned inside the hob wheel body, and the outer ring of the hob wheel body is fixedly provided with a lug; the rolling thrust bearing structure is positioned inside the hob body; the rolling thrust bearing structure comprises small balls and a rolling plane thrust bearing, wherein the number of the small balls is that a plurality of the small balls are positioned in the rolling plane thrust bearing; the inner side wall of the hob wheel body is provided with a wheel body thrust surface, and the outer wall of the hob cutter shaft is provided with a stopping thrust surface. This rolling thrust bearing structure courtyard hobbing cutter has wholly realized having improved ball locking thrust bearing structure operating condition, reduces the bearing and generates heat, has increased the life of bearing, has fine practicality.

Description

Raise hob with rolling thrust bearing structure

Technical Field

The utility model relates to a patio hobbing cutter technical field specifically is a rolling thrust bearing structure patio hobbing cutter.

Background

The raise boring machine as one important mine equipment and water power station construction equipment is used widely in underground transportation tunnel and well shaft construction with stable geological condition. The raise hob is the most important rock breaking tool, and the quality of the raise hob reflects the quality of the raise drill.

The existing patio hob causes early failure of metal sealing due to axial movement, thereby causing failure of a hob bearing, the hob fails and is scrapped, particularly, the angle of a side hob installed on a reverse well drill bit is 30 degrees or 35 degrees and the angle of a positive cutter is 10 degrees, when the reverse well drill bit performs upward reaming operation, the hob body moves from a small end to a large end under the action of a reaction force, the friction force on the surface of a thrust surface bearing can be increased, the bearing is made to generate heat, thereby the roughness of the surface of the thrust surface is changed, and therefore the patio hob with the structure of the thrust bearing is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a rolling thrust bearing structure patio hobbing cutter through rolling thrust bearing structure to can reduce the bearing and generate heat, increase the bearing life-span, prevent better that the hobbing cutter wheel body from taking place axial displacement under the effect of axial force.

The raise hob with the rolling thrust bearing structure comprises a hob wheel body, a hob shaft, a hob locking bearing and a hob locking bearing structure, wherein the hob shaft is located inside the hob wheel body, and bumps are fixedly mounted on an outer ring of the hob wheel body.

The rolling thrust bearing structure is positioned inside the hob body.

The rolling thrust bearing structure comprises small balls and a rolling plane thrust bearing, wherein the small balls are arranged in the rolling plane thrust bearing in a plurality of positions.

The hob body is characterized in that a wheel body thrust surface is arranged on the inner side wall of the hob body, a stop thrust surface is arranged on the outer wall of the hob cutter shaft, the rolling plane thrust bearing and the hob locking bearing are located between the wheel body thrust surface and the stop thrust surface, the rolling plane thrust bearing is located on the left side of the hob locking bearing, and a roller matched with the inner side wall of the hob body and the outer wall of the hob cutter shaft is arranged between the inner side wall of the hob body and the outer wall of the hob cutter shaft.

Further, a seat cavity corresponding to the hob locking bearing is formed in the surface of the large end of the hob shaft, and an oil guide plug pin assembly is installed in the seat cavity in a sliding mode.

Furthermore, an oil filling port communicated with the seat cavity is formed in the surface of the large end of the hob cutter shaft, and a plug screw is connected to the inner portion of the oil filling port in a threaded mode.

Furthermore, the radius of the hob wheel body is gradually decreased from left to back, and the number of the convex blocks positioned outside the hob wheel body is gradually decreased from left to right.

Further, the left side and the right side of the hob shaft are provided with openings, and the openings are all vertical hob shafts.

Further, lead oily stopper round pin subassembly includes the barrel, the one end of barrel is provided with the oil storage chamber, and the periphery of barrel set up with the oil storage chamber looks adaptation lead the hydraulic fluid port, and the even oiling passageway of having seted up in surface interval of the barrel other end.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

1. this rolling thrust bearing structure patio hobbing cutter through installation rolling plane footstep bearing, has improved ball locking thrust bearing structure operating condition so greatly, reduces the bearing and generates heat, not only prevents better that the hobbing cutter wheel body from taking place axial displacement under the effect of axial force, has increased the life of bearing simultaneously.

2. This rolling thrust bearing structure courtyard hobbing cutter carries out the position with the barrel and prescribes a limit to the ball in, under the cooperation setting of oiling passageway, guarantees the effectual circulation of lubricating oil in the seat chamber, makes it can guarantee the smooth balance of the inside and outside pressure differential in the groove between hobbing cutter wheel body and the hobbing cutter arbor.

Drawings

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

FIG. 2 is a cross-sectional view of the hob body of the present invention;

FIG. 3 is a sectional view of the cutter shaft of the hob of the present invention;

fig. 4 is a left side view of the rolling plane thrust bearing of the present invention.

In the figure: 1 hob wheel body, 2 convex blocks, 3 hob locking bearings, 4 rolling plane thrust bearings, 5 hob cutter shafts, 6 roller, 7 seat cavities, 8 oil filling ports, 9 screw plugs, 10 oil guide plug pin assemblies, 11 wheel body thrust surfaces, 12 cut-off thrust surfaces and 13 small balls.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-4, the patio hob with the rolling thrust bearing structure in the present embodiment includes a hob wheel body 1, a hob shaft 5, a hob locking bearing 3, and a hob locking bearing structure, wherein the hob shaft 5 is located inside the hob wheel body 1, a bump 2 is fixedly installed on an outer ring of the hob wheel body 1, in addition, a radius of the hob wheel body 1 gradually decreases from left to back, secondly, a number of the bumps 2 located outside the hob wheel body 1 gradually decreases from left to right, and finally, open holes are opened on left and right sides of the hob shaft 5, and the open holes are vertical to the hob shaft 5.

The rolling thrust bearing structure is located inside the hob body 1.

The thrust bearing structure of the rolling thrust bearing comprises small balls 13 and a rolling plane thrust bearing 4, wherein the small balls 13 are arranged in the rolling plane thrust bearing 4 in a plurality of positions.

It is necessary to supplement that, the left and right ends of the inner side wall of the hob wheel body 1 and the outer side wall of the hob cutter shaft 5 are both provided with a sealing component, and the rolling thrust bearing structure is installed between the thrust surface 12 and the wheel body thrust surface 11.

The hob body thrust surface 11 is arranged on the inner side wall of the hob body 1, the outer wall of the hob shaft 5 is provided with a stop thrust surface 12, the rolling plane thrust bearing 4 and the hob locking bearing 3 are located between the wheel body thrust surface 11 and the stop thrust surface 12, the rolling plane thrust bearing 4 is located on the left side of the hob locking bearing 3, a roller 6 matched with the rolling plane thrust bearing is arranged between the inner side wall of the hob body 1 and the outer wall of the hob shaft 5, in addition, a seat cavity 7 corresponding to the hob locking bearing 3 is arranged on the surface of the large end of the hob shaft 5, an oil guide plug pin assembly 10 is slidably mounted in the seat cavity 7, an oil injection port 8 communicated with the seat cavity 7 is arranged on the surface of the large end of the hob shaft 5, secondly, a screw plug 9 is connected to the internal thread of the oil injection port 8, the oil guide plug pin assembly 10 comprises a cylinder body, an oil storage cavity is arranged at one end of the cylinder body, an oil guide port matched with the oil storage cavity is arranged on the periphery of the cylinder body, and oil injection channels are uniformly arranged on the outer surface of the other end of the cylinder body.

It is necessary to supplement that the oil storage bag is made of rubber material.

The working principle of the above embodiment is as follows: this rolling thrust bearing structure courtyard hobbing cutter, when using, install this ball locking thrust face bearing structure courtyard hobbing cutter and accomplish the back, can obtain the gyration moment of torsion through hydraulic motor, make ball locking thrust face bearing structure courtyard hobbing cutter act on the rock, courtyard hobbing cutter quality reflects the quality of courtyard drilling, through install a rolling thrust bearing structure between thrust face 12 and wheel body thrust face 11 by ending, ball locking thrust bearing structure operating condition has so greatly been improved, reduce the bearing and generate heat, not only prevent hobbing cutter arbor 5 from taking place axial displacement under the effect of axial force better, the life of bearing has been increased simultaneously, whole realization can improve ball locking bearing structure operating condition, reduce the bearing and generate heat, increased the life of bearing, and has good practicality.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a rolling thrust bearing structure courtyard hobbing cutter, includes hobbing cutter wheel body (1), hobbing cutter arbor (5), hobbing cutter locking bearing (3), rolling thrust bearing structure, its characterized in that: the hob cutter shaft (5) is positioned inside the hob wheel body (1), and the outer rings of the hob wheel body (1) are fixedly provided with the convex blocks (2);

the rolling thrust bearing structure is positioned inside the hob body (1);

the rolling thrust bearing structure comprises small balls (13) and a rolling plane thrust bearing (4), wherein the number of the small balls (13) is that a plurality of the small balls are positioned in the rolling plane thrust bearing (4);

the hob wheel body is characterized in that a wheel body thrust surface (11) is arranged on the inner side wall of the hob wheel body (1), a stop thrust surface (12) is arranged on the outer wall of the hob cutter shaft (5), a rolling plane thrust bearing (4) and a hob locking bearing (3) are located between the wheel body thrust surface (11) and the stop thrust surface (12), the rolling plane thrust bearing (4) is located on the left side of the hob locking bearing (3), and a roller (6) matched with the inner side wall of the hob wheel body (1) and the outer wall of the hob cutter shaft (5) is arranged between the inner side wall of the hob wheel body and the outer wall of the hob cutter shaft (5).

2. The raise hob of claim 1, wherein: the surface of the big end of the hob cutter shaft (5) is provided with a seat cavity (7) corresponding to the hob locking bearing (3), and the seat cavity (7) is provided with an oil guide plug pin assembly (10) in a sliding manner.

3. The raise hob of claim 2, wherein: an oil filling port (8) communicated with the seat cavity (7) is formed in the surface of the large end of the hob cutter shaft (5), and a plug screw (9) is connected to the inner thread of the oil filling port (8).

4. The raise hob of claim 1, wherein: the radius of the hob wheel body (1) is gradually decreased from left to back, and the number of the lugs (2) positioned outside the hob wheel body (1) is gradually decreased from left to right.

5. The raise hob of rolling thrust bearing structure according to claim 1, characterized in that: the left side and the right side of the hob cutter shaft (5) are both provided with holes, and the holes are all formed in the vertical hob cutter shaft (5).

6. The raise hob of rolling thrust bearing structure according to claim 2, characterized in that: lead oily stopper round pin subassembly (10) and include the barrel, the one end of barrel is provided with the oil storage chamber, and the periphery of barrel set up with the oil storage chamber looks adaptation lead the hydraulic fluid port, and the surface interval of the barrel other end is even has seted up oiling passageway.