Friction plate mechanism of clutch of tunnel excavation shield machine

Abstract

The utility model belongs to the field of shield tunneling machine clutches, particularly relates to a friction plate mechanism of a clutch of a tunnel excavation shield tunneling machine, and aims to solve the problem that the braking effect is weakened due to the fact that an existing friction disc can be continuously abraded and thinned in the using process and cannot be effectively contacted and rubbed with a braking device of the clutch in time in the braking process. According to the scheme, the clutch comprises a clutch body, a friction plate thickness compensation mechanism and a friction plate material composition mechanism, by means of the friction plate thickness compensation mechanism, shaking between the friction plate body and the friction plate base can be improved, balance between the friction plate body and the friction plate base is improved, and the problems that the friction plate body in an existing clutch can be continuously abraded and thinned in the using process, and the service life of the clutch is prolonged are solved. And the friction plate body cannot be effectively contacted and rubbed with the flywheel in time during braking, so that the braking effect is weakened.

Description

Technical Field

[0001] The utility model relates to a clutch device, in particular to a clutch friction plate mechanism for a tunnel excavation shield machine, belonging to the technical field of shield machine clutches. Background Art

[0002] The shield machine, whose full name is tunnel boring machine, is a special engineering machinery for tunnel excavation. The shield machine can increase the subway excavation efficiency by 8 to 10 times. In addition, during the construction process, there is no need for large-scale demolition on the ground, traffic is not blocked, construction is noiseless, the ground does not sink, and the normal life of residents is not affected. Therefore, the shield machine is widely used in subway construction, and the clutch is an indispensable component of the shield machine.

[0003] In the prior art, for example, in a combined clutch of a tunnel excavation shield machine disclosed in announcement number CN214945875U, a friction plate is fixedly connected to a connecting rod by screws, which is convenient for installing and disassembling the friction plate. The end of the plug rod is arranged in a cone shape, and a slot matching the plug rod is arranged on the fastening bolt. The outer surface of the clutch body is coated with an anti-corrosion coating to improve the service life of the clutch body. A layer of anti-slip rubber pad is fixedly connected to the bottom of the friction plate to improve the friction between the friction plate and the flywheel.

[0004] However, in actual use, the friction disc of the above patent and the anti-skid rubber pad at the bottom thereof will continue to wear and become thinner during use, so that the friction disc cannot effectively contact and rub with the brake device of the clutch in time during braking, thereby weakening the braking effect. In serious cases, it is not conducive to protecting people's personal safety and brings economic losses to people. For this reason, a tunnel excavation shield machine clutch friction plate mechanism is provided. Utility Model Content

[0005] The utility model provides a clutch friction plate mechanism for a tunnel excavation shield machine to solve the problem that the friction disc and the anti-skid rubber pad at the bottom thereof will continuously wear and become thinner during use, so that the friction disc cannot effectively contact and rub with the brake device of the clutch in time during braking, thereby weakening the braking effect.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions: A clutch friction plate mechanism of a tunnel excavation shield machine, comprising a clutch body, and a friction plate thickness compensation mechanism and a friction plate material composition mechanism located inside the clutch body;

[0007] The friction plate thickness compensation mechanism comprises a friction plate seat, four sets of return springs are fixedly connected inside the friction plate seat, a guide rod sleeve and a guide rod are passed through the return spring, and the top of the guide rod is fixedly connected to the friction plate body;

[0008] The friction plate material composition structure includes an annular steel plate, and the surface of the annular steel plate is mixedly arranged and bonded with ceramic fiber friction lining, carbon fiber friction lining and titanium-based fiber friction lining. The ceramic fiber friction lining, carbon fiber friction lining and titanium-based fiber friction lining are fan-shaped structures.

[0009] As a further solution of the utility model: a release bearing is fixedly installed on the top of the clutch body, and an input shaft is passed through the interior of the release bearing.

[0010] As a further solution of the utility model: the input shaft passes through the interior of the clutch body, and a pressure plate is fixedly installed at the end of the clutch body.

[0011] As a further solution of the utility model: the end of the input shaft is fixedly connected to the friction plate seat.

[0012] As a further solution of the utility model: a compression spring is fixedly connected between the pressure plate and the top inner wall of the clutch body.

[0013] As a further solution of the utility model: a flywheel is connected to the bottom of the clutch body.

[0014] As a further solution of the utility model: a mounting bolt is fixedly connected to the connection between the clutch body and the flywheel.

[0015] The beneficial effects of the utility model are:

[0016] 1. The friction plate thickness compensation mechanism is provided, so that the friction plate body can always effectively contact with the flywheel under the elastic force of the return spring. The guide rod and the guide rod sleeve are provided to improve the shaking between the friction plate body and the friction plate seat, improve the balance between the friction plate body and the friction plate seat, and improve the existing clutch. The friction plate body inside the clutch will be constantly worn and thinned during use, so that the friction plate body cannot effectively contact and rub with the flywheel in time during braking, thereby weakening the braking effect. In serious cases, it is not conducive to protecting people's personal safety and brings economic losses to people;

[0017] 2. Through the friction plate material composition structure, the annular steel plate is matched with the carbon fiber friction lining, the ceramic fiber friction lining and the titanium-based fiber friction lining, so that the friction plate body has three different materials of friction linings mixed and arranged on the surface of the structural layer, which has excellent friction and wear performance and is very practical; BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the clutch body of the utility model;

[0019] Figure 2This is a schematic diagram of the internal structure of the clutch body of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the friction plate thickness compensation mechanism of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the friction plate material composition mechanism of the utility model.

[0022] In the figure: 1. clutch body; 2. release bearing; 3. input shaft; 4. friction plate thickness compensation mechanism; 401. friction plate body; 402. guide rod; 403. return spring; 404. guide rod sleeve; 405. friction plate seat; 5. friction plate material composition mechanism; 501. carbon fiber friction lining; 502. annular steel plate; 503. ceramic fiber friction lining; 504. titanium-based fiber friction lining; 6. flywheel; 7. mounting bolts; 8. clamping spring; 9. pressure plate. DETAILED DESCRIPTION

[0023] 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. Embodiment 1

[0024] like Figures 1 to 4 As shown, a clutch friction plate mechanism of a tunnel excavation shield machine includes a clutch body 1, and a friction plate thickness compensation mechanism 4 and a friction plate material composition mechanism 5 located inside the clutch body 1;

[0025] The friction plate thickness compensation mechanism 4 includes a friction plate seat 405, and four groups of return springs 403 are fixedly connected inside the friction plate seat 405. A guide rod sleeve 404 and a guide rod 402 are inserted inside the return spring 403, and a friction plate body 401 is fixedly connected to the top of the guide rod 402. Through the friction plate thickness compensation mechanism 4, the friction plate body 401 can always effectively contact the flywheel 6 under the elastic force of the return spring 403, and the guide rod 402 and the guide rod sleeve 404 are provided to improve the shaking between the friction plate body 401 and the friction plate seat 405, improve the balance between the friction plate body 401 and the friction plate seat 405, and improve the existing clutch. The friction plate body 401 inside will be continuously worn and thinned during use, so that the friction plate body 401 cannot effectively contact and rub with the flywheel 6 in time during braking, thereby weakening the braking effect. In serious cases, it is not conducive to protecting people's personal safety and brings economic losses to people.

[0026] The friction plate material composition structure 5 includes an annular steel plate 502, and the surface of the annular steel plate 502 is mixedly arranged and bonded with a ceramic fiber friction lining 503, a carbon fiber friction lining 501 and a titanium-based fiber friction lining 504, and the ceramic fiber friction lining 503, the carbon fiber friction lining 501 and the titanium-based fiber friction lining 504 are a fan-shaped structure; by setting the friction plate material composition structure 5, in which the annular steel plate 502 is matched with the carbon fiber friction lining 501, the ceramic fiber friction lining 503 and the titanium-based fiber friction lining 504, the friction plate body 401 has three different materials of friction linings mixedly arranged on the surface of the structural layer, which has excellent friction and wear performance and is very practical. Embodiment 2

[0027] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0028] A release bearing 2 is fixedly mounted on the top of the clutch body 1 , and an input shaft 3 is passed through the interior of the release bearing 2 .

[0029] The input shaft 3 passes through the clutch body 1 , and a pressure plate 9 is fixedly mounted on the end of the clutch body 1 .

[0030] The end of the input shaft 3 is fixedly connected to the friction plate seat 405 . Embodiment 3

[0031] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0032] A compression spring 8 is fixedly connected between the pressure plate 9 and the top inner wall of the clutch body 1 , and the compression spring 8 facilitates the connection between the pressure plate 9 and the clutch body 1 .

[0033] A flywheel 6 is connected to the bottom of the clutch body 1 .

[0034] The connection between the clutch body 1 and the flywheel 6 is fixedly connected with a mounting bolt 7 , and the mounting bolt 7 facilitates the installation and disassembly of the clutch body 1 .

[0035] Working principle: When the clutch body 1 is used, when the input shaft 3 moves downward, the pressure plate 9 can be driven to move downward, and then the friction plate body 401 is driven to contact the flywheel 6, so as to realize the use of the clutch body 1 and achieve a good braking effect; during use, the friction plate body 401 will gradually become thinner, so that the friction plate body 401 cannot effectively contact the flywheel 6. Through the friction plate thickness compensation mechanism 4, the friction plate body 401 can always be effectively contacted with the flywheel 6 under the elastic force of the return spring 403. The guide rod 402 and the guide rod sleeve 404 can be used to improve the shaking between the friction plate body 401 and the friction plate seat 405, thereby improving the friction plate body The balance between 401 and the friction plate seat 405 improves the existing clutch, in which the friction plate body 401 inside will continue to wear and become thinner during use, so that the friction plate body 401 cannot effectively contact and rub with the flywheel 6 in time during braking, thereby weakening the braking effect. In serious cases, it is not conducive to protecting people's personal safety and brings economic losses to people. The friction plate material composition mechanism 5 is set, in which the annular steel plate 502 is matched with the carbon fiber friction lining 501, the ceramic fiber friction lining 503 and the titanium-based fiber friction lining 504, so that the friction plate body 401 has three different materials of friction linings mixedly arranged on the surface of the structural layer, which has excellent friction and wear performance and is very practical.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A clutch friction plate mechanism for a tunnel excavation shield machine, characterized in that: It comprises a clutch body (1), and a friction plate thickness compensation mechanism (4) and a friction plate material composition mechanism (5) located inside the clutch body (1); The friction plate thickness compensation mechanism (4) comprises a friction plate seat (405), four groups of return springs (403) are fixedly connected inside the friction plate seat (405), a guide rod sleeve (404) and a guide rod (402) are passed through the interior of the return spring (403), and the top of the guide rod (402) is fixedly connected to the friction plate body (401); The friction plate material composition structure (5) comprises an annular steel plate (502), the surface of which is bonded with a ceramic fiber friction lining (503), a carbon fiber friction lining (501) and a titanium-based fiber friction lining (504) in a mixed arrangement, and the ceramic fiber friction lining (503), the carbon fiber friction lining (501) and the titanium-based fiber friction lining (504) are in a fan-shaped structure.

2. A clutch friction plate mechanism for a tunnel excavation shield machine according to claim 1, characterized in that: A release bearing (2) is fixedly mounted on the top of the clutch body (1), and an input shaft (3) is inserted into the interior of the release bearing (2).

3. A clutch friction plate mechanism for a tunnel excavation shield machine according to claim 2, characterized in that: The input shaft (3) passes through the interior of the clutch body (1), and a pressure plate (9) is fixedly mounted on the end of the clutch body (1).

4. A clutch friction plate mechanism for a tunnel excavation shield machine according to claim 2, characterized in that: The end of the input shaft (3) is fixedly connected to the friction plate seat (405).

5. The clutch friction plate mechanism of a tunnel excavation shield machine according to claim 3, characterized in that: A compression spring (8) is fixedly connected between the pressure plate (9) and the top inner wall of the clutch body (1).

6. The clutch friction plate mechanism of a tunnel excavation shield machine according to claim 1, characterized in that: The bottom of the clutch body (1) is connected to a flywheel (6).

7. A clutch friction plate mechanism for a tunnel excavation shield machine according to claim 6, characterized in that: A mounting bolt (7) is fixedly connected at the connection between the clutch body (1) and the flywheel (6).

Images