Large marine gear box clutch device

Abstract

The present application relates to a large marine gear box clutch device, including a gear shaft, the gear shaft middle part is equipped with a gear, and a shaft sleeve is fixedly sleeved on both sides of the gear shaft at the gear, a sliding bearing is installed on each shaft sleeve, a positioning pin is arranged on each sliding bearing, and the sliding bearing is connected with the gear box body through the positioning pin, compared with the support structure of the inner gear shaft of the marine gear box clutch in the prior art, the present application has the advantages that the support structure of the gear shaft has fewer parts, is convenient to install and disassemble, is more convenient to maintain, has low maintenance cost, the bearing clearance is controllable, a larger clearance can compensate for the running deviation of the gear shaft, and the phenomenon of easy overheating of the gear shaft due to the small clearance in the prior art is avoided.

Description

Technical Field

[0001] This invention relates to the field of marine gearbox technology, and more specifically to a large marine gearbox clutch device. Background Technology

[0002] As an important component of the ship's main propulsion system, the marine gearbox clutch operates when the ship moves forward or backward, engaging the front main engine and the rear propeller shaft through the gearbox to achieve power transmission and torque transfer.

[0003] Existing marine gearbox structures, such as Figure 1 As shown, when designing the support bearings at both ends of the left gear shaft 8, two cylindrical roller bearings 7 are symmetrically arranged, and a four-point contact ball bearing 4 is configured at the left end to bear the axial and radial forces of the gear; the remaining clearance of the rolling bearings after baking is used to compensate for the deflection during operation. The positioning ring 5 in the figure adjusts the axial position of the inner rings of the two bearings at the left end, the adjusting shim 6 supplies oil to the two bearings and adjusts the distance between the outer rings, the positioning pin 3 fixes the outer ring of the bearing, and the pressure plate 2 and bolt 1 fix the inner ring of the bearing to the gear shaft 8.

[0004] The existing structure has the following shortcomings: 1) The existing structure is suitable for the transmission of small and medium power and torque. The clearance value of the rolling bearing after baking is too small. The rolling bearing is prone to overheating and damage when the gear shaft is deflected. It is also prone to slippage of the rolling bearing at low power and low speed. 2) The existing structure has many parts. Disassembly requires a press and the journal is easily damaged. Disassembly is very inconvenient and maintenance costs are high. 3) If this structure is used in a large gearbox, the span between the clutch front support bearing and the gear shaft support bearing is large. The bearing holes in the gearbox are not concentric. This causes deflection when the clutch is engaged, resulting in uneven bearing stress. Summary of the Invention

[0005] The purpose of this invention is to address the problems of complex support structures, numerous parts, inconvenient disassembly, and high maintenance costs of the internal gear shaft in existing marine gearbox clutches, and to provide a large marine gearbox clutch device.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A large marine gearbox clutch device includes a gear shaft with a gear in the middle. A bushing is fixedly sleeved on both sides of the gear on the gear shaft. A sliding bearing is installed on each bushing and a locating pin is provided on each sliding bearing. The sliding bearing is connected to the gearbox housing through the locating pin.

[0008] The application adopts the technical scheme, the support structure of the gear shaft is provided as a structure matched by two shaft sleeves, sliding bearings and positioning pins, the support reliability is ensured, the support structure is simplified, compared with the support structure of the marine gear box clutch inner gear shaft in the prior art, which is complex, has more parts, is inconvenient to disassemble and has high maintenance cost, the support structure of the gear shaft has fewer parts, is convenient to install and disassemble, meanwhile, the sliding bearing in the application is more convenient to maintain than the existing rolling bearing and has low maintenance cost.

[0009] Further, an annular thrust portion is formed on one end of the shaft sleeve close to the gear, the end face of the sliding bearing abuts against the thrust portion, the thrust portion can be used as a limit during installation of the sliding bearing, thereby facilitating installation, meanwhile, the axial force can be transmitted to the end face of the sliding bearing through the thrust portion, so that the sliding bearing has the function of bearing axial force.

[0010] Further, the two shaft sleeves are symmetrically arranged about the gear, and the two sliding bearings are symmetrically arranged about the gear, so that the deviation during gear operation is smaller.

[0011] Further, the application further comprises a clutch housing, a friction plate and a friction plate seat, the clutch housing, the friction plate, the friction plate seat and the gear shaft are sequentially connected, the friction plate comprises a first friction plate arranged on the clutch housing and a second friction plate arranged on the friction plate seat, the first friction plate and the second friction plate are in transmission connection, and the power transmission from the clutch housing to the gear shaft can be realized through the transmission connection of the first friction plate and the second friction plate.

[0012] Further, the application further comprises cylindrical roller bearings and angular ball bearings for supporting the clutch housing, the cylindrical roller bearings and the angular ball bearings are sleeved outside the clutch housing, the cylindrical roller bearings and the angular ball bearings are used as support bearings of the clutch housing, have strong bearing capacity and good reliability.

[0013] Further, the clutch housing comprises a clutch oil cylinder, a clutch gear and a clutch rear housing which are sequentially connected in the axial direction, the cylindrical roller bearings are installed on the clutch rear housing, and the angular ball bearings are installed on the clutch oil cylinder, the cylindrical roller bearings and the angular ball bearings are installed at both ends of the clutch housing, have large span and can more stably support the clutch housing.

[0014] Further, one end of the gear shaft is a connecting end, the connecting end is connected with the friction plate seat through a spline structure, a pressing plate is arranged on the end face of the connecting end, the pressing plate is pressed on the friction plate seat, the pressing plate is used for axially limiting the friction plate seat, meanwhile, the gear shaft is connected with the friction plate seat through the spline structure, and the power transmission is stable and reliable.

[0015] Further, the clutch oil cylinder front end is provided with an input flange, the input flange is used for being connected with the front end main machine, and the input flange is used for realizing the gear box clutch device to access the power of the main machine.

[0016] Compared with the prior art, the beneficial effects of the present application are: the support structure of the gear shaft has fewer parts, is convenient to install and disassemble, is more convenient to maintain, and has low maintenance cost; compared with the rolling bearing, the bearing play of the sliding bearing is controllable (different specifications of the sliding bearing are replaced or the shaft sleeve is polished), a larger play is arranged to compensate for the running deviation of the gear shaft, and the phenomenon that the gear shaft is easily overheated due to the small play in the prior art is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a cross-sectional view of the gear box clutch device for the ship in the prior art;

[0018] Figure 2 It is a cross-sectional view of the present application.

[0019] Marked in the figure: 1-bolt, 2-press plate, 3-positioning pin, 4-four-point contact ball bearing, 5-positioning ring, 6-adjusting pad, 7-cylindrical roller bearing, 8-gear shaft, 01-shaft sleeve, 02-sliding bearing, 03-positioning pin, 04-gear shaft, 05-cylindrical roller bearing, 06-needle roller bearing, 07-friction plate seat, 08-clutch oil cylinder, 09-clutch gear, 10-clutch rear housing, 11-clutch piston, 12-input flange, 13-press plate, 14-clutch spring seat. DETAILED DESCRIPTION

[0020] The present application will be described in detail below with reference to the drawings.

[0021] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0022] The present application provides a large marine gear box clutch device, as shown in the figure, comprising a gear shaft 04, the middle part of the gear shaft 04 is provided with a gear, and a shaft sleeve 01 is fixedly sleeved on both sides of the gear shaft 04, a sliding bearing 02 is installed on each shaft sleeve 01, and a positioning pin 03 is arranged on each sliding bearing 02. Figure 2 The end of the shaft sleeve 01 close to the gear is formed with an annular thrust portion, and the end face of the sliding bearing 02 abuts against the thrust portion.

[0023] The end of the shaft sleeve 01 close to the gear is formed with an annular thrust portion, and the end face of the sliding bearing 02 abuts against the thrust portion.

[0024] Two shaft sleeves 01 are symmetrically arranged about the gear, and two sliding bearings 02 are symmetrically arranged about the gear;

[0025] The large marine gear box clutch device further comprises a clutch housing, a friction plate and a friction plate seat 07, the clutch housing, the friction plate, the friction plate seat 07 and the gear shaft 04 are sequentially connected, the friction plate comprises a first friction plate arranged on the clutch housing and a second friction plate arranged on the friction plate seat 07, and the first friction plate and the second friction plate are in transmission connection;

[0026] Further comprising a cylindrical roller bearing 05 and a self-aligning roller bearing 06 for supporting the clutch housing, the cylindrical roller bearing 05 and the self-aligning roller bearing 06 are sleeved outside the clutch housing;

[0027] The clutch housing comprises a clutch oil cylinder 08, a clutch gear 09 and a clutch rear housing 10 connected in sequence in the axial direction, the cylindrical roller bearing 05 is installed on the clutch rear housing 10, and the self-aligning roller bearing 06 is installed on the clutch oil cylinder 08;

[0028] The clutch oil cylinder 08 is provided with a clutch piston 11 and a clutch spring seat 14, the clutch piston 11 can reciprocate in the axial direction to realize the pressing and disengagement with the friction plate, thereby realizing the pressing and disengagement between the first friction plate and the second friction plate; the reset spring is sleeved on the clutch spring seat 14, and is used for providing the reset rebound force for the clutch piston 11;

[0029] One end of the gear shaft 04 is a connecting end, the connecting end is connected with the friction plate seat 07 through a spline, and the end face of the connecting end is provided with a pressing plate 13 which is pressed on the friction plate seat 07;

[0030] The front end of the clutch oil cylinder 08 is provided with an input flange 12, and the input flange 12 is used for being connected with the front end main machine.

[0031] In actual use, the marine main machine transmits power to the input flange 12, the input flange 12 drives the clutch housing to rotate, and then drives the first friction plate to rotate, when the power needs to be transmitted, the oil pressure drives the clutch piston 11 to slide and press on the friction plate, so that the first friction plate and the second friction plate are pressed tightly, under the action of friction, the second friction plate, the friction plate seat 07 and the gear shaft 04 rotate, and then drive the propeller shaft at the rear end connected with the gear shaft 04 to rotate; through the above process, the power transmission from the front end marine main machine to the rear end propeller shaft is realized; the clutch piston can also be moved to disengage the friction plate, at this time, the first friction plate and the second friction plate are loosened, and the clutch housing and the gear shaft 04 independently rotate and do not interfere with each other.

[0032] The gear shaft support structure of the application has the advantages that the support structure is simple, the gear shaft support structure has fewer parts, and the gear shaft support structure is easy to install and disassemble; compared with the rolling bearing, the sliding bearing is more convenient to maintain and has low maintenance cost; compared with the rolling bearing, the bearing clearance of the sliding bearing is controllable (the sliding bearing of different specifications is replaced or the shaft sleeve is polished), a larger clearance is set to compensate for the running deviation of the gear shaft, and the phenomenon that the gear shaft is easily overheated due to the small clearance in the prior art is avoided.

[0033] The above merely describes the preferred embodiments of the application and is not intended to limit the application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A large marine gear box clutch arrangement comprising a gear shaft (04) having a gear in the middle portion thereof, characterized in that: The axle sleeve (01) is arranged on the gear shaft (04) on both sides of the gear, a sliding bearing (02) is arranged on each axle sleeve (01), a positioning pin (03) is arranged on each sliding bearing (02), and the sliding bearing (02) is connected with the gear box body through the positioning pin (03); The axle sleeve (01) is arranged on the gear shaft (04) on both sides of the gear, a sliding bearing (02) is arranged on each axle sleeve (01), a positioning pin (03) is arranged on each sliding bearing (02), and the sliding bearing (02) is connected with the gear box body through the positioning pin (03); The axle sleeve (01) is arranged on the gear shaft (04) on both sides of the gear, a sliding bearing (02) is arranged on each axle sleeve (01), a positioning pin (03) is arranged on each sliding bearing (02), and the sliding bearing (02) is connected with the gear box body through the positioning pin (03); The clutch housing, the friction plate and the friction plate seat (07) are sequentially connected, the friction plate comprises a first friction plate arranged on the clutch housing and a second friction plate arranged on the friction plate seat (07), and the first friction plate and the second friction plate are in driving connection. The cylindrical roller bearing (05) and the self-aligning roller bearing (06) are arranged outside the clutch housing and are used for supporting the clutch housing. The clutch housing comprises a clutch oil cylinder (08), a clutch gear (09) and a clutch rear housing (10) which are sequentially connected in the axial direction, the cylindrical roller bearing (05) is arranged on the clutch rear housing (10), and the self-aligning roller bearing (06) is arranged on the clutch oil cylinder (08).

2. A large marine gear box clutch arrangement according to claim 1, characterised in that: One end of the gear shaft (04) is a connecting end, the connecting end is connected with the friction plate seat (07) through a spline, a pressing plate (13) is arranged on the end face of the connecting end, and the pressing plate (13) is pressed on the friction plate seat (07).

3. A large marine gear box clutch arrangement according to claim 1, characterised in that: The input flange (12) is arranged at the front end of the clutch oil cylinder (08) and is used for being connected with a front-end host.

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