CN218971120U - Double-fulcrum coreless bag integrated sliding hob set - Google Patents

Abstract

The utility model discloses a mechanism relating to the application field of drilling construction equipment, in particular to a double-fulcrum coreless bag integrated sliding hob group structure, which comprises a double-fulcrum integrated hob, a combined hob seat and a bearing bush; the double-pivot integrated hob comprises a hob shell and a hob shaft protruding from two ends of the hob shell, wherein a combined hob seat is provided with a shaft hole for bearing the double-pivot integrated hob, a bearing bush is embedded in the shaft hole, the bearing bush is in sliding connection with the hob shaft of the double-pivot integrated hob, the double-pivot integrated hob is used for breaking rocks, the service life of the hob shell is far lower than that of a hob core package, after the hob teeth are worn, no matter whether the hob core package is worn, the whole hob is scrapped, and meanwhile, the hob core package occupies nearly half of the hob cost in terms of hob cost, so that great waste is caused.

Description

Double-fulcrum coreless bag integrated sliding hob set

Technical Field

The utility model relates to the application field of drilling construction equipment, in particular to a double-fulcrum coreless bag integrated sliding hob group.

Background

Along with the progress of scientific technology and the improvement of mechanization and intelligence level in China, the construction technology of a drilling method is continuously developed, and different construction fields and complex geological conditions can be met. The well drilling construction technology in China has been applied to many fields such as petroleum exploitation, coal mine construction, geological investigation, pile foundation anchoring, etc., and has achieved apparent economic benefits and social benefits.

At present, although the technical progress of drilling method construction is seen, the prior hob structure generally adopts a design that a hob shaft is separated from a hob shell aiming at the characteristics of dwarf mudstone in western region, the biggest defect of the prior hob structure is that a rolling bearing is arranged between the hob shell and the hob shaft, extremely high processing precision of a matching surface and an expensive metal sealing ring are required for ensuring that slurry does not enter the bearing, the matching surface, the bearing and the sealing between the hob shell and the hob shaft are collectively called as a core package in the patent, the core package occupies about half of the hob cost, the service life of hob teeth is seriously mismatched with the service life of the core package of the hob, the service life of the hob teeth is far lower than the service life of the core package of the hob, after the hob teeth are worn, no matter whether the core package of the hob is worn or not, the whole hob is scrapped, so that great waste is caused, the effect is poor, and the double-pivot coreless package integrated sliding hob is specially provided for guaranteeing the damage condition of the hob when the dwarf mudstone is drilled in western region.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provide a rolling pair realized by adopting a double-fulcrum integrated hob and a bearing bush to form a sliding pair instead of adopting a rolling bearing, and a clearance between a hob shell and the bearing does not exist, so that a core-wrapping structure is not needed, and the use cost is greatly reduced while the original effect is achieved.

In order to achieve the above purpose, the utility model adopts the following design scheme:

the double-fulcrum coreless ladle integrated sliding hob group is characterized by comprising a double-fulcrum integrated hob 1, a combined hob seat 2 and a bearing bush 3;

the double-fulcrum integrated hob 1 comprises a hob shell 11 and a hob shaft 12 protruding from two ends of the hob shell 11, wherein the hob shell and the hob shaft are fixedly connected into an integrated structure, and the double-fulcrum integrated hob 1 is used for breaking rocks;

the combined hob seat 2 is used for bearing the double-pivot integrated hob 1, the combined hob seat 2 comprises a hob seat base 21 and a hob seat gland 22 positioned below the hob seat base 21, the hob seat base 21 and the hob seat gland 22 are detachably connected through screws, two ends of the combined hob seat 2 are respectively provided with a shaft hole used for being in running fit with the hob shaft 12, and the hob seat base 21 is used for bearing the double-pivot integrated hob 1;

the bearing bush 3 is embedded in the shaft hole of the roller seat base 21.

Further, the roller seat base 21 is U-shaped, two ends of the U-shape of the roller seat base 21 are provided with ear plates 211, the two ends of the ear plates 211 are planes, and the middle of the ear plates is a semicircle with inward concave; the roller seat gland 22 is provided with a square body with flat surfaces at two ends and a semi-cylinder with an inward concave middle; the lug 211 and the roller seat gland 22 are two-half combined type, the two ends of the shaft hole of the combined roller seat 2 are spliced to form a plane for disassembling and connecting, and the inner wall of the outer side of the shaft hole is provided with an L-shaped bulge for preventing the bearing bush from falling off.

Further, the bearing bush 3 includes a left bearing bush 31 and a right bearing bush 32, the left Duan Zhouwa and the right bearing bush 32 are completely attached to the inner wall of the shaft hole of the combined type rolling tool holder 2, the outer diameter of the left bearing bush 32 is larger than that of the left Duan Zhouwa, a limit step is formed by the right bearing bush 32 and the left Duan Zhouwa 31, and the limit step formed by the left Duan Zhouwa 31 and the right bearing bush 32 is matched with the L-shaped protrusion on the combined type rolling tool holder 2.

Further, the end of the right-section bearing bush 32 is turned outwards to form an L-shaped flanging, and the L-shaped flanging of the right-section bearing bush 32 protrudes out of the shaft hole of the combined rolling tool apron 2 and is attached to the edge of the shaft hole; the hob shell 11 and the arbor 12 form an L-shaped step; the L-shaped flanging of the bearing bush 3 is clamped between the L-shaped step and the opening edge of the shaft hole and is used for limiting the axial movement of the double-fulcrum integrated hob.

Further, the arbor 12 is sleeved with a shaft sleeve 121 for protecting the arbor 12 from abrasion.

Further, the left Duan Zhouwa and the right bearing bush 32 have the same inner diameter, the cylindrical bearing bush 3 is formed, and the cutter shaft 12 sleeved with the shaft sleeve 121 is sleeved in the cylinder of the bearing bush 3.

Further, screw holes for installing screws 221 are formed in the two end planes of the roller seat gland 22, and the screws 221 penetrate through the two end planes of the roller seat gland 22; when the screw is installed, the screw rod of the screw 221 protrudes out of the upper part of the connecting surface of the roller seat gland 22; the roller seat base 21 is provided with screw holes mutually coupled with the screws 221, and the roller seat gland 22 and the roller seat base 21 are detachably connected through the screws 221.

Further, the hob housing 11 is cylindrical, a plurality of raised hob gears 111 are provided on the hob housing 11 along the axial direction of the arbor 12, and the raised hob gears 111 are polygonal.

The beneficial effects of the utility model are as follows:

according to the double-fulcrum coreless bag integrated sliding hob group, the hob shell and the hob shaft are designed into the integrated structure, and meanwhile, the original rolling friction pair is changed into the sliding friction pair, so that the structure is simple, the manufacturing cost is greatly reduced, the construction cost is greatly reduced, and conditions are created for better benefits for project construction.

Drawings

FIG. 1 is a front view and a front cut view of a dual fulcrum coreless ladle integrated sliding hob device;

FIG. 2 is a front view, a front cut-away view and a side view of a double-fulcrum integrated hob;

FIG. 3 is a side view of the modular roller blade holder with the modular roller blade holder disassembled and after splicing;

FIG. 4 is a side view in section of a bushing and double-fulcrum integrated hob and combination hob head connection;

figure 5 is a side cut detail view of the bearing shell.

Reference numerals illustrate: 1. double-fulcrum integrated hob; 2. a combined roller seat; 3. bearing bush; 11. a hob housing; 12. a cutter shaft; 13. an L-shaped step; 111. a hob gear; 121. a shaft sleeve; 21. a roller seat base; 22. a roller seat gland; 23. a shaft hole; 24. an L-shaped protrusion; 211. ear plates; 221. a screw; 31. left Duan Zhouwa; 32. a right end bearing bush; 33. a limit step; 34. and (5) an L-shaped flanging.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. Embodiments and features of embodiments in this application may be combined with each other without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the embodiment of the present utility model, directional indications such as up, down, left, right, front, and rear … … are referred to, and the directional indication is merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture such as that shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, "a plurality of" means two or more. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

See fig. 1 to 5.

The utility model relates to a double-fulcrum coreless ladle integrated sliding hob group, which comprises a double-fulcrum integrated hob 1, a combined hob seat 2 and a bearing bush 3, as shown in figure 1;

the double-pivot integrated hob 1 comprises a hob shell 11 and a hob shaft 12 protruding from two ends of the hob shell 11, the hob shell 11 and the hob shaft 12 are fixedly connected into an integrated structure, as shown in fig. 2, the double-pivot integrated hob 1 is used for breaking rock, the hob shaft 12 and the hob shell 11 are integrated, the whole integrated hob 1 rotates relative to the hob base 2 during hob 1 operation, an original rolling friction pair is changed into a sliding friction pair, the hob shell and the hob shaft of the conventional hob are separately designed, the hob shaft is fixed on the hob base through bolts, the relative hob base is fixed, the hob shell is rotated relative to the hob shaft, and the relative rotation requirement is met through installation of a rolling bearing between the hob shell and the hob shaft. The original hob structure has the greatest defects that as the rolling bearing is arranged between the hob shell and the hob shaft, extremely high processing precision of the matching surface is required for ensuring that slurry does not enter the bearing, and an expensive metal sealing ring is also required, the matching surfaces, the bearing and the sealing between the hob shell and the hob shaft are collectively called as a core bag in the patent, the core bag accounts for about half of the hob cost, the structure is changed into a structure of a double-pivot coreless bag integrated sliding hob group, the hob shell and the hob shaft are integrally designed, the core bag structure is eliminated, the manufacturing cost is greatly reduced, the advantages of simple structure and low manufacturing cost are achieved, and the service life of the hob is prolonged;

the combined hob seat 2 is used for bearing the double-pivot integrated hob 1, as shown in fig. 3, the combined hob seat 2 comprises a hob seat base 21 and a hob seat gland 22 positioned below the hob seat base 21, the hob seat base 21 and the hob seat gland 22 are detachably connected through screws, shaft holes used for being in rotary fit with the hob shaft 12 are respectively formed in two ends of the combined hob seat 2, the hob seat 21 is used for bearing the double-pivot integrated hob 1, the combined hob seat 2 effectively fixes the integrated hob 1 on the hob seat 2, and the combined hob seat is convenient to detach, safe and reliable;

the bearing bush 3 is embedded in the shaft hole of the roller seat base 21, and the wear-resistant bearing bush 3 with the axial stop function is made of high-strength wear-resistant materials, so that the long service life of the bearing bush 3 is ensured.

In an embodiment, the roller seat base 21 is U-shaped, as shown in fig. 1, two ends of the U-shape of the roller seat base 21 are provided with ear plates 211, as shown in fig. 3, the ear plates 211 are semicircular with two planar ends and an inward concave middle; the roller seat gland 22 is provided with a square body with flat surfaces at two ends and a semi-cylinder with an inward concave middle; the lug 211 with the roller holder gland 22 is two half combination formula, and the concatenation forms the shaft hole and the both ends of combination formula roller holder 2 are used for dismantling the plane of connection, the inner wall in the outside in shaft hole is equipped with prevents the L shape arch that the axle bush drops, as shown in fig. 4, can prevent the axial float of axle bush 3 through setting up L shape arch for overall structure is more reliable and stable.

In an embodiment, the bearing bush 3 includes a left bearing bush 31 and a right bearing bush 32, as shown in fig. 5, the left Duan Zhouwa and the right bearing bush 32 are completely attached to the inner wall of the shaft hole of the combined roller seat 2, the right bearing bush 32 with an outer diameter larger than that of the left Duan Zhouwa and the left Duan Zhouwa form a limit step, and the limit step formed by the left Duan Zhouwa and the right bearing bush 32 is matched with the L-shaped protrusion on the combined roller seat 2, as shown in fig. 4.

In an embodiment, the end of the right-stage bearing bush 32 is turned outwards to form an L-shaped flange, as shown in fig. 4, the L-shaped flange of the right-stage bearing bush 32 protrudes out of the shaft hole of the combined roller seat 2 and is attached to the edge of the shaft hole; the hob shell 11 and the arbor 12 form an L-shaped step; the L-shaped flanging of the bearing bush 3 is clamped between the L-shaped step and the opening edge of the shaft hole and used for limiting the axial movement of the double-pivot integrated hob, the L-shaped flanging and the L-shaped step are arranged to ensure that the double-pivot integrated hob 1 rolls in a fixed range without axial movement, so that the whole structure is stable and reliable, and the service life is longer.

In an embodiment, the shaft sleeve 121 is sleeved on the cutter shaft 12, as shown in fig. 4, and is used for protecting the abrasion of the cutter shaft 12, the shaft sleeve 121 is made of soft materials with certain lubricating performance, and is embedded on the shafts at two ends of the hob, so that a sliding pair is formed by the shaft sleeve 121 and the abrasion-resistant bearing bush 3 with an axial stopping function, and the shaft sleeve and the abrasion-resistant bearing bush 3 are replaced regularly as wearing parts in the use process, so that the cutter shaft 12 is protected, the service life of the cutter shaft 12 is prolonged, and the cost is greatly reduced.

In an embodiment, the left Duan Zhouwa and right bearing bushes 32 have the same inner diameter, so as to form the cylindrical bearing bush 3, and as shown in fig. 1-4, the cutter shaft 12 sleeved with the shaft sleeve 121 is sleeved in the cylinder of the bearing bush 3.

In one embodiment, screw holes for installing screws 221 are formed on two end planes of the roller seat gland 22, as shown in fig. 3, the screws 221 pass through the two end planes of the roller seat gland 22; when the screw is installed, the screw rod of the screw 221 protrudes out of the upper part of the connecting surface of the roller seat gland 22; the screw hole which is mutually coupled with the screw 221 is formed in the hob holder base 21, the hob holder gland 22 and the hob holder base 21 are detachably connected through the screw 221, and the hob holder 2 and the hob 1 are easier to install and replace through the detachable connection.

In one embodiment, the hob housing 11 is cylindrical, as shown in fig. 2, the hob housing 11 is provided with a plurality of raised hob gears 111 along the axis direction of the arbor 12, and the raised hob gears 111 are polygonal.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (8)

1. The double-fulcrum coreless bag integrated sliding hob group is characterized by comprising a double-fulcrum integrated hob (1), a combined hob seat (2) and a bearing bush (3);

the double-fulcrum integrated hob (1) comprises a hob shell (11) and a hob shaft (12) protruding from two ends of the hob shell (11), wherein the hob shell (11) and the hob shaft (12) are fixedly connected into an integrated structure, and the double-fulcrum integrated hob (1) is used for breaking rocks;

the combined type hob seat (2) is used for bearing the double-pivot integrated hob (1), the combined type hob seat (2) comprises a hob seat base (21) and a hob seat gland (22) positioned below the hob seat base (21), the hob seat base (21) and the hob seat gland (22) are detachably connected through screws, shaft holes (23) used for being in rotary fit with the hob shaft (12) are respectively formed in two ends of the combined type hob seat (2), and the hob seat base (21) is used for bearing the double-pivot integrated hob (1);

the bearing bush (3) is embedded in the shaft hole (23) of the roller seat base (21).

2. The double-pivot coreless bag integrated sliding hob set according to claim 1, wherein the hob base (21) is in a U shape, two ends of the U shape of the hob base (21) are provided with lug plates (211), and the lug plates (211) are semicircular with two planar ends and an inward concave middle; the roller seat gland (22) is provided with a square body with flat surfaces at two ends and a semi-cylinder with an inward concave middle; the lug plate (211) and the roller seat gland (22) are two half combined type, the two half combined type roller seat gland is spliced to form a shaft hole (23) of the combined type roller seat (2) and a plane with two ends used for disassembling and connecting, and an L-shaped bulge (24) for preventing the bearing bush from falling off is arranged on the inner wall of the outer side of the shaft hole (23).

3. The double-fulcrum coreless package integrated sliding hob assembly according to claim 1, characterized in that the bearing bush (3) comprises a left Duan Zhouwa (31) and a right bearing bush (32), the left Duan Zhouwa (31) and the right bearing bush (32) are completely attached to the inner wall of the shaft hole (23) of the combined hob base (2), the outer diameter of the left bearing bush (32) and the left Duan Zhouwa (31) of the left Duan Zhouwa (31) are larger than the outer diameter of the right bearing bush (32) to form a limiting step (33), and the limiting step (33) formed by the left Duan Zhouwa (31) and the right bearing bush (32) is matched with the L-shaped protrusion (24) on the combined hob base (2).

4. A double-fulcrum coreless ladle integrated sliding hob set according to claim 3, characterized in that the end of the right-section bearing bush (32) is turned outwards to form an L-shaped flanging (34), the L-shaped flanging (34) of the right-section bearing bush (32) protrudes out of the shaft hole (23) of the combined hob base (2) and is attached to the edge of the shaft hole (23); the hob shell (11) and the arbor (12) form an L-shaped step (13); the L-shaped flanging (34) of the bearing bush (3) is clamped between the L-shaped step (13) and the edge of the shaft hole (23) and is used for limiting the axial movement of the double-fulcrum integrated hob (1).

5. The double-pivot coreless ladle integrated sliding hob assembly according to claim 4, characterized in that the arbor (12) is sleeved with a bushing (121) for protecting the arbor (12) from wear.

6. The double-fulcrum coreless ladle integrated sliding hob assembly according to claim 5, wherein the left Duan Zhouwa (31) and the right bearing bush (32) have the same inner diameter, the cylindrical bearing bush (3) is formed, and the arbor (12) sleeved with the shaft sleeve (121) is sleeved in the cylinder of the bearing bush (3).

7. The double-fulcrum coreless bag integrated sliding hob group according to claim 1, characterized in that screw holes for installing screws (221) are arranged on two end planes of the hob base gland (22), and the screws (221) penetrate through the two end planes of the hob base gland (22); when the screw is installed, the screw rod of the screw (221) protrudes out of the upper part of the connecting surface of the roller seat gland (22); the roller seat base (21) is provided with screw holes mutually coupled with the screws (221), and the roller seat gland (22) is detachably connected with the roller seat base (21) through the screws (221).

8. The double-pivot coreless bag integrated sliding hob set according to claim 1, wherein the hob housing (11) is cylindrical, a plurality of rings of convex hob gears (111) are arranged on the hob housing (11) along the axis direction of the hob shaft (12), and the convex hob gears (111) are polygonal.

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