Shield tunneling machine clutch with heat accumulation prevention function

Abstract

The utility model belongs to the technical field of shield tunneling machine clutches, particularly relates to a shield tunneling machine clutch with a heat accumulation prevention function, and aims to solve the problems that heat is generated in an existing clutch due to friction among parts, heat accumulation in the clutch accelerates aging of elements in the clutch, and the service life of the clutch is shortened. According to the scheme, the clutch comprises a clutch shell, and an air inlet is formed in the top end of the clutch shell. Due to the fact that the clutch shell can rotate along with the flywheel, the air inlet is formed in the surface of the shell, active air inlet can be achieved through rotation of the shell, the air outlet is formed in the bottom end of the shell, air circulation in the shell is achieved, and the flywheel drives the cooling fan blades to rotate. And heat dissipation treatment can be conducted on equipment in the shell through the second ventilation opening, and the problems that heat is generated in the clutch due to friction between parts and accumulated in the clutch, and the service life of the clutch is shortened are solved.

Description

Technical Field

[0001] The utility model relates to a shield machine clutch, in particular to a shield machine clutch with a heat accumulation prevention function, belonging to the technical field of clutches. Background Art

[0002] A shield machine is a tunnel boring machine that uses the shield method. The shield construction method is that the tunnel boring machine builds the "shield" (referring to the supporting segments) of the tunnel while excavating. It is different from the open construction method. The operation of the shield machine is inseparable from the cooperation of the clutch. The clutch is a component in the locomotive transmission system that is directly connected to the engine. It is located between the engine and the transmission.

[0003] In the prior art, a clutch with a braking function for a tunnel boring machine as disclosed in announcement number CN215567562U includes a clutch housing and a brake assembly, wherein the lower ends of the clutch housing are fixedly connected to the chassis by fastening screws, and a protective cover is fixedly connected to the upper side walls of the clutch housing by fastening bolts. The clutch has a simple structure, the lower side is fixedly connected to the chassis by fastening screws, and the upper side is fixedly connected to the protective cover by fastening bolts.

[0004] However, in the implementation of relevant technologies, it was found that the clutch with braking function for tunnel boring machines of the above design has the following problems: the above device is fixed to the chassis by fastening screws, and the upper side is fixedly connected to the protective cover by fastening bolts. However, when the clutch is working, the device is sealed by the chassis and the protective cover, which makes it difficult for the internal airflow to flow. Heat is generated inside the clutch due to friction between components. The heat accumulates inside the clutch, which accelerates the aging of the internal components of the clutch and reduces the service life of the clutch. In view of this, a shield machine clutch with anti-heat accumulation function is provided to overcome the above defects. Utility Model Content

[0005] The utility model provides a shield machine clutch with anti-heat accumulation function to solve the problem that heat is generated inside the clutch due to friction between components, and the heat accumulates inside the clutch, which accelerates aging of internal components of the clutch and reduces the service life of the clutch.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions: a shield machine clutch with a heat accumulation prevention function, comprising a clutch housing, an air inlet is provided at the top of the clutch housing, an air outlet is provided at the bottom of the clutch housing, and a dustproof net is provided inside the air inlet;

[0007] A heat sink is fixed to the inner wall of the clutch housing, an output shaft is arranged inside the clutch housing, and a heat dissipation fan blade is fixed outside the output shaft.

[0008] A protective shell is fixed on one side of the clutch housing, a plurality of heat dissipation holes are opened on the surface of the protective shell, a second vent is opened inside the protective shell, a first vent is opened on the surface of the clutch housing, and the clutch housing and the protective shell are connected by welding.

[0009] As a further solution of the utility model: a connecting hole is opened on one side of the clutch housing, an output shaft is arranged inside the connecting hole, a release bearing is fixed on the outer side of the output shaft, and a diaphragm spring is arranged on one side of the release bearing.

[0010] As a further solution of the utility model: a pressure plate is arranged on the side of the output shaft where the diaphragm spring is fixed, a driven plate is arranged on one side of the pressure plate, a torsional damper is arranged inside the driven plate, and a pressure plate 2 is arranged on one side of the driven plate.

[0011] As a further solution of the utility model: a friction plate is arranged on one side of the pressure plate 2, a heat sink is arranged on one side of the friction plate, and a flywheel is arranged on one side of the heat sink.

[0012] As a further solution of the utility model: the flywheel is threadedly connected to the protective shell through bolts, the interior of the flywheel passes through the input shaft, and a buffer block is fixed on one side of the heat sink.

[0013] As a further solution of the utility model: a damping rod is fixed to one side of the buffer block, and a shock absorbing spring is arranged on the outer side of the damping rod.

[0014] The beneficial effects of the utility model are:

[0015] 1. In the utility model, since the clutch housing will rotate with the flywheel, the air inlet opened on the surface of the housing can realize active air intake from the air inlet through the rotation of the shell, and an air outlet is arranged at the bottom of the housing to realize air circulation inside the housing. The flywheel also drives the heat dissipation fan blades to rotate, and the heat dissipation treatment can be performed on the equipment in the shell through the vents to avoid the problem that the heat generated inside the clutch due to the friction between the components and the heat accumulation inside the clutch will accelerate the aging of the internal components of the clutch and reduce the service life of the clutch.

[0016] 2. The utility model is provided with dustproof nets inside the air inlet, air outlet and heat dissipation holes to prevent dust from entering the clutch housing and affecting the operation of the equipment; the shock-absorbing spring and the damping rod are combined to produce a shock-absorbing effect, and the presence of the buffer block can provide a certain buffering effect, thereby reducing the amplitude of the device vibration and enhancing the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2This is a schematic diagram of the clutch split structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the inner wall structure of the clutch housing of the utility model;

[0020] Figure 4 The figure is a schematic diagram of the internal structure of the clutch housing of the utility model.

[0021] In the figure: 1. Clutch housing; 2. Connecting hole; 3. Air inlet; 4. Air outlet; 5. Heat dissipation hole; 6. Vent 1; 7. Diaphragm spring; 8. Pressure plate; 9. Torsional shock absorber; 10. Driven plate; 11. Friction plate; 12. Heat dissipation plate; 13. Dust net; 14. Heat sink; 15. Buffer block; 16. Damping rod; 17. Shock-absorbing spring; 18. Heat dissipation fan blade; 19. Vent 2. DETAILED DESCRIPTION

[0022] 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

[0023] like Figures 1 to 4 As shown, a shield machine clutch with a heat accumulation prevention function comprises a clutch housing 1, an air inlet 3 is provided at the top of the clutch housing 1, an air outlet 4 is provided at the bottom of the clutch housing 1, and a dustproof net 13 is provided inside the air inlet 3;

[0024] A heat sink 14 is fixed to the inner wall of the clutch housing 1 , an output shaft is arranged inside the clutch housing 1 , and a heat dissipation fan blade 18 is fixed to the outer side of the output shaft.

[0025] A protective shell is fixed on one side of the clutch housing 1, a plurality of heat dissipation holes 5 are provided on the surface of the protective shell, a vent 19 is provided inside the protective shell, a vent 1 6 is provided on the surface of the clutch housing 1, and the clutch housing 1 and the protective shell are connected by welding. Embodiment 2

[0026] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0027] A connecting hole 2 is provided on one side of the clutch housing 1, an output shaft is arranged inside the connecting hole 2, a release bearing is fixed on the outside of the output shaft, a diaphragm spring 7 is provided on one side of the release bearing, and the diaphragm spring 7 plays the role of a compression spring and a separation lever, and can automatically adjust the clamping force, stabilize the spring pressure at high speed, and uniformly distribute the pressure on the pressure plate.

[0028] A pressure plate 8 is arranged on one side of the output shaft to which a diaphragm spring 7 is fixed, a driven plate 10 is arranged on one side of the pressure plate 8, a torsional damper 9 is arranged inside the driven plate 10, and a pressure plate 2 is arranged on one side of the driven plate 10. By arranging the torsional damper 9, vibration energy can be effectively dissipated, thereby improving the stability of the clutch operation. Embodiment 3

[0029] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0030] A friction plate 11 is provided on one side of the pressure plate 2, a heat sink 12 is provided on one side of the friction plate 11, and a flywheel is provided on one side of the heat sink 12. The heat sink 12 improves the heat dissipation capacity inside the device.

[0031] The flywheel is threadedly connected to the protective shell through bolts, the interior of the flywheel passes through the input shaft, a buffer block 15 is fixed to one side of the heat sink 14, and the flywheel stores the kinetic energy output by the engine and balances the unstable torque generated when the engine is running.

[0032] A damping rod 16 is fixed to one side of the buffer block 15, and a shock-absorbing spring 17 is arranged on the outer side of the damping rod 16. The shock-absorbing spring 17 and the damping rod 16 combine to produce a shock-absorbing effect, and the existence of the buffer block 15 can provide a certain buffering effect, thereby reducing the amplitude of the vibration of the device and enhancing the stability of the device.

[0033] Working principle: First, when the staff steps on the clutch pedal, the operating mechanism pushes the release bearing to press the clamping mechanism of the pressure plate 8, causing the pressure plate 8 to retreat and create a gap between the flywheel. At this time, the driven plate 10 is completely separated from the flywheel and the pressure plate 8, there is no friction, there is no power transmission between the clutch master and slave parts, and there is no speed difference. In this state, the engine can idle, the transmission can shift gears, and the shield machine can stop. Then, when the staff releases the clutch pedal, the operating mechanism returns to its original position, the release bearing is disengaged from the clamping mechanism, and the clamping mechanism pushes the pressure plate 8 forward under the action of the diaphragm spring 7, eliminating the gap between the flywheel and the flywheel. At this time, the driven plate 10 is in close contact with the flywheel and the friction plate 11, there is sufficient friction, there is power transmission between the clutch master and slave parts, and there is no speed difference. In this state, the power of the engine can be completely transmitted to the transmission, and the shield machine can operate normally. A heat sink 12 is arranged on one side of the friction plate 11 to provide a certain heat dissipation effect. A torsional damper 9 is arranged inside the driven plate 10, which can effectively dissipate vibration energy and improve the stability of the clutch operation. An output shaft is arranged inside the connecting hole 2. Finally, since the clutch housing 1 will rotate with the flywheel, the air inlet 3 and the vent 1 6 opened on the surface of the housing can realize active air intake from the air inlet 3 through the rotation of the shell, and an air outlet 4 is arranged at the bottom of the shell to realize air circulation inside the shell. The flywheel also drives the heat dissipation fan blades 18 to rotate, and the equipment in the shell can be cooled through the vent 2 19. A dustproof net 13 is arranged inside the heat dissipation hole 5 to prevent dust from entering the clutch housing 1 and affecting the operation of the equipment, and a heat sink 14 is arranged on the inner wall of the clutch housing 1 to improve the heat dissipation effect of the device. The shock absorbing spring 17 and the damping rod 16 arranged on the inner wall of the clutch housing 1 combine to produce a shock absorbing effect, and the existence of the buffer block 15 can provide a certain buffering effect, thereby reducing the amplitude of the vibration of the device and enhancing the stability of the device.

[0034] 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.

[0035] 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 shield machine clutch with a heat accumulation prevention function, comprising a clutch housing (1), characterized in that: An air inlet (3) is provided at the top end of the clutch housing (1), an air outlet (4) is provided at the bottom end of the clutch housing (1), and a dustproof net (13) is provided inside the air inlet (3); A heat sink (14) is fixed to the inner wall of the clutch housing (1), an output shaft is arranged inside the clutch housing (1), and a heat sink blade (18) is fixed to the outer side of the output shaft; A protective shell is fixed to one side of the clutch housing (1), a plurality of heat dissipation holes (5) are provided on the surface of the protective shell, a second vent (19) is provided inside the protective shell, a first vent (6) is provided on the surface of the clutch housing (1), and the clutch housing (1) and the protective shell are connected by welding.

2. A shield machine clutch with heat accumulation prevention function according to claim 1, characterized in that: A connecting hole (2) is provided on one side of the clutch housing (1), an output shaft is arranged inside the connecting hole (2), a release bearing is fixed on the outside of the output shaft, and a diaphragm spring (7) is arranged on one side of the release bearing.

3. A shield machine clutch with heat accumulation prevention function according to claim 2, characterized in that: A pressure plate (8) is arranged on the side of the output shaft on which a diaphragm spring (7) is fixed, a driven plate (10) is arranged on one side of the pressure plate (8), a torsional damper (9) is arranged inside the driven plate (10), and a pressure plate 2 is arranged on one side of the driven plate (10).

4. A shield machine clutch with heat accumulation prevention function according to claim 3, characterized in that: A friction plate (11) is provided on one side of the pressure plate 2, a heat dissipation plate (12) is provided on one side of the friction plate (11), and a flywheel is provided on one side of the heat dissipation plate (12).

5. A shield machine clutch with heat accumulation prevention function according to claim 4, characterized in that: The flywheel is threadedly connected to the protective shell via bolts, the interior of the flywheel passes through the input shaft, and a buffer block (15) is fixed to one side of the heat sink (14).

6. A shield machine clutch with heat accumulation prevention function according to claim 5, characterized in that: A damping rod (16) is fixed to one side of the buffer block (15), and a shock absorbing spring (17) is arranged on the outer side of the damping rod (16).

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