Novel sliding bearing type shield tunneling machine hob

Abstract

The utility model relates to the field of cutting tools, and discloses a novel sliding bearing type shield tunneling machine hob which comprises a hob ring, a hob body is arranged outside the hob ring, an L-shaped check ring is arranged on the outer wall of the hob body, a bearing inner sleeve is arranged on the inner wall of the hob body, and a tapered roller is connected to the outer wall of the bearing inner sleeve in a sliding mode. The outer walls of the tapered rollers are connected with bearing outer sleeves in a sliding mode, bearing gaskets are arranged on the outer walls of the two bearing outer sleeves, and bearing retainers are arranged on the outer walls of the bearing outer sleeves. In the utility model, firstly, the cutter body is pushed to drive the bearing outer sleeve to slide on the outer wall of the cutter shaft, meanwhile, the floating sealing seat and the floating sealing piece slide on the outer wall of the first end cover, and the second end cover is pushed to move, so that the floating sealing seat and the floating sealing piece slide outside the cutter shaft, and the floating sealing piece is arranged on the outer sides of the floating sealing seat and the floating sealing piece. The sealing effect is achieved by pushing the oil plug to be installed in the first end cover and the second end cover.

Description

Technical Field

[0001] The utility model relates to the field of cutting tools, in particular to a novel sliding bearing type shield machine roller cutter. Background Art

[0002] A shield machine is a special mechanical equipment used in tunnel construction. It digs tunnels by advancing underground and is widely used in tunnel projects in the fields of subways, roads, water conservancy, etc. The working principle of a shield machine is similar to that of digging a pipe underground. Its main components include a shield body, a propulsion system, a tunneling system, a support system, an electrical system, etc. The cutter, as the most important cutting tool of a full-section rock tunnel boring machine, is the component that directly contacts rocks and rock chips.

[0003] When the existing shield machine cutter is in use, the lubricating fluid inside the cutter may overflow from the gap, causing abnormal wear of the internal sliding bearing, resulting in excessive bearing clearance and reduced service life. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a new sliding bearing shield machine cutter, which aims to improve the problem that the lubricating fluid inside the cutter overflows from the gap, causing abnormal wear of the internal sliding bearing, resulting in excessive bearing fit clearance and reduced service life.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a new type of sliding bearing shield machine roller cutter, including a cutter ring, a cutter body is arranged outside the cutter ring, an L-shaped retaining ring is arranged on the outer wall of the cutter body, a bearing inner sleeve is arranged on the inner wall of the cutter body, a tapered roller is slidably connected to the outer wall of the bearing inner sleeve, a bearing outer sleeve is slidably connected to the outer wall of the tapered roller, a bearing outer sleeve is slidably connected to the outer wall of the tapered roller, bearing washers are arranged on the outer walls of the two bearing outer sleeves, a bearing retainer is arranged on the outer wall of the bearing outer sleeve, a cutter shaft is arranged on the inner wall of the bearing outer sleeve, a floating seal seat is arranged on the outer wall of the bearing inner sleeve, a floating seal is arranged on the outer wall of the floating seal seat, and the outer wall of the floating seal is arranged on the outer wall of the bearing outer sleeve.

[0006] Further:

[0007] The outer wall of the floating seal seat is arranged on the inner wall of the cutter body, the inner wall of the cutter body is provided with a first sealing ring, and the outer wall of the first sealing ring is arranged on the outer wall of the floating seal seat.

[0008] Further:

[0009] The inner wall of the knife body is provided with a first end cover, and the inner wall of the first end cover is arranged on the outer wall of the knife shaft.

[0010] Further:

[0011] The outer wall of the first end cover is arranged on the outer wall of the floating seal seat, and the outer wall of the first end cover is arranged on the outer wall of the bearing sleeve.

[0012] Further:

[0013] The outer wall of the bearing sleeve is provided with a second sealing ring, the outer wall of the second sealing ring is arranged on the outer wall of the knife shaft, and the outer wall of the second sealing ring is arranged on the outer wall of the first end cover.

[0014] Further:

[0015] The inner wall of the cutter body is provided with a second end cover, the inner wall of the second end cover is arranged on the outer wall of the cutter shaft, the outer wall of the second end cover is arranged on the outer wall of the floating seal seat, and the outer wall of the second end cover is arranged on the outer wall of the bearing sleeve.

[0016] Further:

[0017] The outer walls of the second end cover and the first end cover are arranged on the outer wall of the floating seal, and the outer wall of the floating seal is on one side of the outer wall of the oil plug.

[0018] Further:

[0019] The outer walls of the second end cover and the first end cover are provided with floating seals, the outer walls of the floating seals are arranged on the outer wall of the bearing sleeve, and the outer wall of the floating seals is on one side of the outer wall of the oil plug.

[0020] The utility model has the following beneficial effects:

[0021] In the utility model, the knife body is first pushed to drive the bearing sleeve to slide on the outer wall of the knife shaft, and at the same time, the floating seal seat and the floating seal slide on the outer wall of the first end cover, and the second end cover is pushed to move to slide outside the knife shaft, so that the floating seal seat and the floating seal are installed on the outside of the knife shaft, and the oil plug is pushed and installed in the first end cover and the second end cover to achieve a sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the internal structure of a novel sliding bearing shield machine cutter proposed by the utility model;

[0023] Figure 2 This is a cross-sectional view of a bearing jacket of a novel sliding bearing shield machine cutter proposed by the utility model;

[0024] Figure 3 The utility model is a schematic diagram of a cutter shaft of a novel sliding bearing shield machine roller cutter.

[0025] Legend:

[0026] 1. Cutter ring; 2. Cutter body; 3. First sealing ring; 4. Second sealing ring; 5. Cutter shaft; 6. Oil plug; 7. Floating seal seat; 8. First end cover; 9. Second end cover; 10. Floating seal; 11. Tapered roller; 12. Check ring; 13. Bearing washer; 14. L-shaped retaining ring; 15. Bearing inner sleeve; 16. Bearing retainer; 17. Bearing outer sleeve. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1-3 The utility model provides an embodiment: a novel sliding bearing shield machine hob, comprising a cutter ring 1, a cutter body 2 is arranged outside the cutter ring 1, an L-shaped retaining ring 14 is arranged on the outer wall of the cutter body 2, a bearing inner sleeve 15 is arranged on the inner wall of the cutter body 2, a tapered roller 11 is slidably connected to the outer wall of the bearing inner sleeve 15, a bearing outer sleeve 17 is slidably connected to the outer wall of the tapered roller 11, a bearing outer sleeve 17 is slidably connected to the outer wall of the two bearing outer sleeves 17, bearing washers 13 are arranged on the outer wall of the bearing outer sleeve 17, a bearing retainer 16 is arranged on the outer wall of the bearing outer sleeve 17, a cutter shaft 5 is arranged on the inner wall of the bearing outer sleeve 17, a floating seal seat 7 is arranged on the outer wall of the floating seal seat 7, a floating seal 10 is arranged on the outer wall of the floating seal 10, and the outer wall of the floating seal 10 is arranged on the outer wall of the bearing outer sleeve 17;

[0029] Specifically, the bearing inner sleeve 15 and the bearing outer sleeve 17 are pushed to move, so that the bearing inner sleeve 15 slides on the inner wall of the cutter body 2, and then the floating seal seat 7 is pushed to slide on the inner wall of the cutter body 2, so that the floating seal seat 7 is installed between the bearing inner sleeve 15 and the cutter body 2, and the floating seal 10 is pushed to move and install between the floating seal seat 7 and the bearing outer sleeve 17, and the bearing outer sleeve 17 is driven by pushing the cutter body 2 to slide on the outer wall of the cutter shaft 5.

[0030] The outer wall of the floating seal seat 7 is arranged on the inner wall of the blade body 2, the inner wall of the blade body 2 is provided with a first sealing ring 3, and the outer wall of the first sealing ring 3 is arranged on the outer wall of the floating seal seat 7;

[0031] Specifically, the first sealing ring 3 is placed on the outer wall of the floating seal seat 7 to push the floating seal seat 7 to slide on the inner wall of the blade body 2, thereby making the first sealing ring 3 slide on the blade body 2, thereby achieving a sealing effect.

[0032] The inner wall of the cutter body 2 is provided with a first end cover 8, and the inner wall of the first end cover 8 is arranged on the outer wall of the cutter shaft 5; the outer wall of the first end cover 8 is arranged on the outer wall of the floating seal seat 7, and the outer wall of the first end cover 8 is arranged on the outer wall of the bearing sleeve 17; the outer wall of the bearing sleeve 17 is provided with a second sealing ring 4, and the outer wall of the second sealing ring 4 is arranged on the outer wall of the cutter shaft 5, and the outer wall of the second sealing ring 4 is arranged on the outer wall of the first end cover 8;

[0033] Specifically, the first end cover 8 is pushed to move so that the first end cover 8 is installed on the blade shaft 5 , and the second sealing ring 4 is pushed to slide on the outer wall of the blade shaft 5 and installed between the first end cover 8 and the blade shaft 5 .

[0034] The inner wall of the cutter body 2 is provided with a second end cover 9, the inner wall of the second end cover 9 is arranged on the outer wall of the cutter shaft 5, the outer wall of the second end cover 9 is arranged on the outer wall of the floating seal seat 7, and the outer wall of the second end cover 9 is arranged on the outer wall of the bearing sleeve 17; the second end cover 9 and the first end cover 8 are both provided with an oil plug 6 inside, the outer wall of the second end cover 9 is provided with a back-stop ring 12, and the outer wall of the back-stop ring 12 is arranged on the outer wall of the cutter shaft 5; the outer walls of the second end cover 9 and the first end cover 8 are arranged on the outer wall of the floating seal 10, and the outer wall of the floating seal 10 is on one side of the outer wall of the oil plug 6;

[0035] Specifically, by pushing the second end cover 9 to move, 19 is made to slide outside the cutter shaft 5, and 19 is installed on the outside of the floating seal seat 7 and the floating seal 10, and then by pushing the stop ring 12 on the outer wall of the cutter shaft 5, it is installed on the outer wall of the second end cover 9, and by pushing the oil plug 6 to slide inside the first end cover 8 and the second end cover 9, the oil plug 6 is installed in the first end cover 8 and the second end cover 9.

[0036] Working principle: When the new sliding bearing shield machine roller cutter is needed, first push the first end cover 8 to move, so that the first end cover 8 is installed on the cutter shaft 5, push the second sealing ring 4 to slide on the outer wall of the cutter shaft 5 and install it between the first end cover 8 and the cutter shaft 5, place the bearing gasket 13 between the two bearing sleeves 17, push the bearing inner sleeve 15 and the bearing sleeve 17 to move, so that the bearing inner sleeve 15 slides on the inner wall of the cutter body 2, place the first sealing ring 3 on the outer wall of the floating seal seat 7, and then push the floating seal seat 7 to slide on the inner wall of the cutter body 2, so that the floating seal seat 7 is installed between the bearing inner sleeve 15 and the cutter body 2, and push the floating seal 10 to move and install it on the floating seal seat 7 and the bearing sleeve 17, and the bearing sleeve 17 is driven by pushing the cutter body 2 to make the bearing sleeve 17 slide on the outer wall of the cutter shaft 5, and at the same time, the floating seal seat 7 and the floating seal 10 slide on the outer wall of the first end cover 8, so that the bearing sleeve 17 is installed on the outer wall of the cutter shaft 5, and the second end cover 9 is pushed to move, so that 19 slides outside the cutter shaft 5, and 19 is installed on the outside of the floating seal seat 7 and the floating seal 10, and then the stop ring 12 is pushed on the outer wall of the cutter shaft 5 and installed on the outer wall of the second end cover 9, and the oil plug 6 is pushed to slide inside the first end cover 8 and the second end cover 9, and then the oil plug 6 is installed in the first end cover 8 and the second end cover 9 to achieve a sealing effect.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel sliding bearing shield machine cutter, comprising a cutter ring (1), characterized in that: A knife body (2) is arranged outside the knife ring (1), an L-shaped retaining ring (14) is arranged on the outer wall of the knife body (2), a bearing inner sleeve (15) is arranged on the inner wall of the knife body (2), a tapered roller (11) is slidably connected to the outer wall of the bearing inner sleeve (15), a bearing outer sleeve (17) is slidably connected to the outer wall of the tapered roller (11), a bearing outer sleeve (17) is slidably connected to the outer wall of the tapered roller (11), bearing washers (13) are arranged on the outer walls of the two bearing outer sleeves (17), a bearing retainer (16) is arranged on the outer wall of the bearing outer sleeve (17), a knife shaft (5) is arranged on the inner wall of the bearing outer sleeve (17), a floating seal seat (7) is arranged on the outer wall of the bearing inner sleeve (15), a floating seal (10) is arranged on the outer wall of the floating seal seat (7), and the outer wall of the floating seal (10) is arranged on the outer wall of the bearing outer sleeve (17).

2. The novel sliding bearing shield machine cutter according to claim 1 is characterized in that: The outer wall of the floating seal seat (7) is arranged on the inner wall of the knife body (2), the inner wall of the knife body (2) is provided with a first sealing ring (3), and the outer wall of the first sealing ring (3) is arranged on the outer wall of the floating seal seat (7).

3. The novel sliding bearing shield machine cutter according to claim 1 is characterized in that: The inner wall of the knife body (2) is provided with a first end cover (8), and the inner wall of the first end cover (8) is arranged on the outer wall of the knife shaft (5).

4. The novel sliding bearing shield machine cutter according to claim 3 is characterized in that: The outer wall of the first end cover (8) is arranged on the outer wall of the floating seal seat (7), and the outer wall of the first end cover (8) is arranged on the outer wall of the bearing sleeve (17).

5. The novel sliding bearing shield machine cutter according to claim 4 is characterized in that: The outer wall of the bearing sleeve (17) is provided with a second sealing ring (4), the outer wall of the second sealing ring (4) is arranged on the outer wall of the knife shaft (5), and the outer wall of the second sealing ring (4) is arranged on the outer wall of the first end cover (8).

6. The novel sliding bearing shield machine cutter according to claim 1 is characterized in that: The inner wall of the blade body (2) is provided with a second end cover (9), the inner wall of the second end cover (9) is arranged on the outer wall of the blade shaft (5), the outer wall of the second end cover (9) is arranged on the outer wall of the floating seal seat (7), and the outer wall of the second end cover (9) is arranged on the outer wall of the bearing sleeve (17).

7. The novel sliding bearing shield machine cutter according to claim 6 is characterized by: The second end cover (9) and the first end cover (8) are both provided with oil plugs (6) inside, the outer wall of the second end cover (9) is provided with a stop ring (12), and the outer wall of the stop ring (12) is arranged on the outer wall of the knife shaft (5).

8. The novel sliding bearing shield machine cutter according to claim 6 is characterized by: The outer walls of the second end cover (9) and the first end cover (8) are arranged on the outer wall of the floating seal (10), and the outer wall of the floating seal (10) is on one side of the outer wall of the oil plug (6).

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