CN111609994A

CN111609994A - Ship model shaft support arm rotating device

Info

Publication number: CN111609994A
Application number: CN202010518568.8A
Authority: CN
Inventors: 孙立宪; 吴炜; 常亮; 胡科; 赵旭
Original assignee: 702th Research Institute of CSIC
Current assignee: 702th Research Institute of CSIC
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2020-09-01
Anticipated expiration: 2040-06-09
Also published as: CN111609994B

Abstract

The invention relates to the technical field of ship model tests, in particular to a rotating device of a shaft bracket arm of a ship model, which comprises a shaft bracket arm, a shaft rod and a shaft support, wherein the shaft support comprises a first shaft sleeve and a connecting plate, the shaft end of the first shaft sleeve is vertically fixed on the plate surface on one side of the connecting plate, the plate surface on the other side of the connecting plate is attached and fixed on the rotating table surface of a precision rotating table of an index plate, the precision rotating table of the index plate is fixed on a mounting table surface in a ship body, the rod body of the shaft rod sequentially and freely penetrates through the inside of the shaft bracket arm, the side wall of the ship body, the mounting table surface, the precision rotating table of the index plate, the connecting plate and the inside of the first shaft sleeve, the shaft bracket arm and the shaft rod are fixed through a first locking screw, the first shaft sleeve and the shaft rod are fixed through a second locking screw, two ends of, the adjustment of the mounting angle of the shaft bracket arm is conveniently and quickly realized.

Description

Ship model shaft support arm rotating device

Technical Field

The invention relates to the technical field of ship model tests, in particular to a rotation device for a support arm of a ship model shaft.

Background

With the development of the ship design and performance research, people no longer pay attention to the design research of the ship body, and pay more attention to the design research of ship accessories such as the shaft support. Structurally, the shaft support provides sufficient support strength for the tail shaft, but it presents itself with some resistance in terms of hydrodynamic performance. The shaft support is positioned near the front of the propeller, and influences the inflow distribution in front of the propeller, and further influences the propulsion performance. Therefore, the shaft support has a significant influence on the rapidity of the ship. For ships with attachments such as an axle bracket, the water pool rapid model test is used for carrying out both a hull model test and a ship model test research and verification of the influence of the axle bracket attachment on the ship rapidity, which puts higher technical requirements on the water pool rapid model test.

The shaft support of the ship is a connecting piece between a hub of a tail shaft support of the ship and a hull, the part of the shaft support of the ship, which has a relatively obvious influence on the rapidity of the ship, is a shaft support arm, and the influence on the rapidity of the shaft support arm is mainly caused by the difference of the section form and the incident flow angle of the support arm. Therefore, for a ship rapid model test with the shaft bracket, accurate adjustment of the angle of the shaft bracket arm is important. In the model test, the scheme with the best rapid performance is determined by comparing the received power of the ship at different support arm angles.

The ship model rapid model test for adjusting the angle of the shaft bracket arm in the towing tank inevitably faces the following three problems:

(1) easily causing water leakage of the ship model. Because the central axis of rotation of shaft support arm need run through to the ship model inside, just can carry out shaft support arm angle modulation in the ship model, this needs trompil on wooden ship model, and guarantees that the axis of rotation can pass through the trompil free rotation, and the trompil is handled not good like this, just leads to the ship model to leak easily, influences experimental measurement, leaks and then can make the experiment unable to go on seriously.

(2) The rotating shaft bracket arms are difficult to install. The opening of the hull form should be minimized under the condition that the rotation requirement is secured so that the pivoting-arm support cannot pass through the hull form from the inside of the hull form to the outside of the hull form together with the pivoting shaft thereof, and at the same time, the pivoting shaft is hardly allowed to pass through the hull form from the outside of the hull form due to the interference of the support boss, so that the pivoting-arm support is installed separately from the pivoting shaft thereof. The separate installation requires a through hole in the center direction of the arm shaft of the support frame so that the rotating shaft can pass through the central shaft hole of the arm shaft of the support frame, and thus, the rotating shaft can pass through the opening of the ship model from the inside of the ship model to the outside of the ship model and then pass through the central shaft hole of the arm shaft of the support frame to the boundary hole of the hub of the support frame.

(3) The operation is inconvenient. Although the adjustment range of the angle of the shaft support is small, the precision requirement is high, the shaft support arm is positioned under water in the test process, and the test progress is directly influenced by the rapid and accurate adjustment of the angle of the shaft support arm.

Disclosure of Invention

The applicant aims at the defects in the prior art and provides a ship model shaft bracket arm rotating device which can conveniently and quickly realize the adjustment of the mounting angle of a shaft bracket arm.

The technical scheme adopted by the invention is as follows: the utility model provides a ship model shaft support arm rotating device, including the shaft support arm, axostylus axostyle and axle support, the axle holds in the palm including first axle sleeve and connecting plate, the axle head vertical fixation of first axle sleeve is on one side face of connecting plate, the opposite side face of connecting plate pastes to lean on the rotary table face who fixes at the accurate revolving stage of graduated disk, the accurate revolving stage of graduated disk is fixed on the inside mounting table face of hull, the pole body of axostylus axostyle freely passes the inside of shaft support arm in proper order, the lateral wall of hull, mounting table face, the accurate revolving stage of graduated disk, the inside of connecting plate and first axle sleeve, it is fixed through first locking screw between shaft support arm and the axostylus axostyle, it is fixed through second locking screw between first axle sleeve and the axostylus.

As a further improvement of the above technical solution:

the outer end of axostylus axostyle is the arc, offers the arc recess on the outer wall of support hub, and inside the recess was inserted to the outer end of axostylus axostyle.

A first through hole is formed in the middle of the shaft support arm along the arm length direction, a second shaft sleeve is attached to the first through hole, and a shaft body of the shaft lever penetrates through the second shaft sleeve.

A second through hole is formed in the side wall of the ship body, a third shaft sleeve is attached to the second through hole, and a rod body of the shaft rod penetrates through the third shaft sleeve.

The cross section of the shaft rod is square, the cross sections of the first through hole and the second shaft sleeve are both square, the cross sections of the second through hole and the third shaft sleeve are both circular, and the cross section of the first shaft sleeve is square or circular.

The invention has the following beneficial effects: when the adjustment is concrete, the regulation pole of adjusting the accurate revolving stage of graduated disk rotates, and it is rotatory to adjust the rotatory mesa that drives the accurate revolving stage of graduated disk when the pole rotates, and the axle holds in the palm and fixes on the revolving stage face of the accurate revolving stage of graduated disk, so axle holds in the palm, axostylus axostyle and axle support arm also can rotate thereupon, has the scale on the accurate revolving stage of graduated disk, and revolving stage face pivoted angle can be through scale direct measurement, then can be convenient, quick realization axle support arm installation angle's regulation.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Wherein: 10. a shaft support arm; 20. a shaft lever; 30. a shaft support; 31. a first bushing; 32. a connecting plate; 40. a hull; 41. mounting a table top; 50. a first locking screw; 60. a second locking screw; 70. a carrier hub; 80. a precise rotating platform of an index plate; 90. a second shaft sleeve; 100. and a third bushing.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1, the ship model shaft support arm rotation device of the present embodiment includes a shaft support arm 10, a shaft rod 20 and a shaft support 30, wherein the shaft support 30 includes a first shaft sleeve 31 and a connecting plate 32, a shaft end of the first shaft sleeve 31 is vertically fixed on a side plate surface of the connecting plate 32, another side plate surface of the connecting plate 32 is attached to a rotation table surface of an index plate precision rotation table 80, the index plate precision rotation table 80 is fixed on a mounting table surface 41 inside a ship body 40, a shaft body of the shaft rod 20 sequentially and freely passes through the inside of the shaft support arm 10, a side wall of the ship body 40, the mounting table surface 41, the index plate precision rotation table 80, the connecting plate 32 and the inside of the first shaft sleeve 31, the shaft support arm 10 and the shaft rod 20 are fixed by a first locking screw 50, the first shaft sleeve 31 and the shaft rod 20 are fixed by a second locking screw 60, and two ends of the, The outer wall of the hull 40 is arranged with a gap. During the specific regulation, the regulation pole of adjusting the accurate revolving stage of graduated disk 80 rotates, it is rotatory to drive the rotary table face of the accurate revolving stage of graduated disk 80 when adjusting the pole and rotate, axle holds in the palm 30 and fixes on the rotary table face of the accurate revolving stage of graduated disk 80, so axle holds in the palm 30, axostylus axostyle 20 and axle support arm 10 also can rotate along with it, the accurate revolving stage of graduated disk 80 is last to have the scale, rotary table face pivoted angle can be through the scale direct measurement, then can be convenient, quick realization axle support arm 10 installation angle's regulation. In the adjustment process, whole ship model can be in aqueous always, has avoided the loaded down with trivial details of ship model hoist and mount from top to bottom, improves test efficiency. In addition, the first boss 31 and the connecting plate 32 are integrally formed during the process.

The outer end of axostylus axostyle 20 is the arc, offers the arc recess on the outer wall of support hub 70, and the outer end of axostylus axostyle 20 is inserted inside the recess. The outer end of the shaft 20 and the arcuate groove in the carrier hub 70 act as a stop in which the outer end of the shaft 20 rotates when the shaft 20 is rotated.

The middle part of the shaft bracket arm 10 is provided with a first through hole along the arm length direction, a second shaft sleeve 90 is attached in the first through hole, and the shaft body of the shaft lever 20 passes through the second shaft sleeve 90.

A second through hole is formed in the side wall of the hull 40, the third shaft sleeve 100 is attached to the second through hole, and the shaft of the shaft 20 passes through the third shaft sleeve 100. The second and

third bushings

90, 100 both function as a protector.

The cross section of the shaft rod 20 is square, the cross sections of the first through hole and the second shaft sleeve 90 are both square, the cross sections of the second through hole and the third shaft sleeve 100 are both circular, and the cross section of the first shaft sleeve 31 is square or circular. All design axostylus axostyle 20, second through-hole and second axle sleeve 90 squarely, avoid taking place circumference relative motion between axostylus axostyle 20 and the second axle sleeve 90 through square edges and corners, guarantee that axostylus axostyle 20 can drive axle support arm 10 and rotate together.

During specific installation, the shaft body of the shaft rod 20 is inserted downwards from the shaft support 30 and sequentially passes through the indexing disc precision rotating table 80, the third shaft sleeve 100 and the shaft support arm 10 to enter the support hub 70, the shaft rod 20 is adjusted up and down to keep a certain gap in the support hub 70, the shaft rod 20 is convenient to rotate, the second locking screw 60 is locked, and the shaft rod 20 and the shaft support 30 are fixedly connected. Then, the support arm 10 is adjusted up and down to enable two ends of the support arm to have appropriate gaps with the outer wall of the support hub 70 and the outer wall of the ship body 40 respectively, the gaps exist to facilitate the rotation of the shaft support arm 10, then the first locking screw 50 is locked to enable the support arm 10 and the shaft rod 20 to be fixedly connected, and then the adjusting rod of the indexing disc precision rotating platform 80 is rotated to adjust the rotation angle of the shaft support arm 10. In this application axostylus axostyle 20 and an axle support arm 10 adopt detachable mode cooperation to convenient change axle support arm 10 can satisfy different experimental demands.

The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.

Claims

1. The utility model provides a ship model shaft support arm rotating device which characterized in that: comprises a shaft bracket arm (10), a shaft lever (20) and a shaft support (30), wherein the shaft support (30) comprises a first shaft sleeve (31) and a connecting plate (32), the shaft end of the first shaft sleeve (31) is vertically fixed on the plate surface on one side of the connecting plate (32), the plate surface on the other side of the connecting plate (32) is attached and fixed on the rotating table surface of a precise rotary table (80) of an index plate, the precise rotary table (80) of the index plate is fixed on a mounting table surface (41) inside a ship body (40), the shaft body of the shaft lever (20) sequentially and freely penetrates through the inside of the shaft bracket arm (10), the side wall of the ship body (40), the mounting table surface (41), the precise rotary table (80) of the index plate, the connecting plate (32) and the inside of the first shaft sleeve (31), the shaft bracket arm (10) and the shaft lever (20) are fixed through a first locking screw (50), the first shaft sleeve (31) and the shaft lever, two ends of the shaft bracket arm (10) are respectively arranged with the outer wall of the bracket hub (70) and the outer wall of the ship body (40) in a clearance way.

2. The ship model shaft support arm turning device of claim 1, wherein: the outer end of the shaft rod (20) is arc-shaped, an arc-shaped groove is formed in the outer wall of the support hub (70), and the outer end of the shaft rod (20) is inserted into the groove.

3. The ship model shaft support arm turning device of claim 1, wherein: a first through hole is formed in the middle of the shaft support arm (10) along the arm length direction, a second shaft sleeve (90) is attached to the first through hole, and a shaft body of the shaft lever (20) penetrates through the second shaft sleeve (90).

4. The ship model shaft support arm turning device of claim 1, wherein: a second through hole is formed in the side wall of the ship body (40), a third shaft sleeve (100) is attached to the second through hole, and a shaft body of the shaft rod (20) penetrates through the third shaft sleeve (100).

5. The ship model shaft support arm turning device of claim 1, wherein: the cross section of the shaft rod (20) is square, the cross sections of the first through hole and the second shaft sleeve (90) are both square, the cross sections of the second through hole and the third shaft sleeve (100) are both circular, and the cross section of the first shaft sleeve (31) is square or circular.