Ship spindle brake

Abstract

The utility model discloses a ship main shaft brake which comprises a brake wheel fixedly connected to a ship main shaft and a brake belt hooped on the brake wheel, the two ends of the brake belt are connected with brake screws through brake nuts, a brake base is arranged below the brake wheel, and the brake belt is connected with the brake base through a connecting piece. At least one brake clamping block is arranged on the inner circumference of the brake belt, a brake clamping groove corresponding to the brake clamping block is formed in the outer circumference of the brake wheel, when the brake belt and the brake wheel are hooped tightly, the brake clamping block is inserted into the brake clamping groove, and the two side faces of the brake clamping block are attached to the corresponding side faces of the brake clamping groove in the circumferential direction of the brake wheel. The periphery of the brake belt is connected with a release spring, and each brake clamping block is correspondingly provided with at least one release spring. The ship main shaft brake can avoid brake failure caused by slipping between the brake wheel and the brake belt after the ship main shaft is braked, and the brake process is convenient and labor-saving to operate.

Description

Technical Field

[0001] The utility model relates to a mechanism in a ship shafting, in particular to a brake for a ship shafting. Background Art

[0002] The brake of a ship shafting is a locking device for a ship main shaft, which is used to prevent the shafting from rotating reversely driven by the propeller due to the action of water flow during the ship's stop or when a certain shafting in a multi-shaft driven ship stops working, so as to avoid unnecessary wear caused by the rotation of the engine crankshaft when the engine and the corresponding lubrication system both stop working. A common structure for ship shafting braking is a brake that uses a brake band connected to a brake base to hold tightly a brake wheel mounted on the main shaft, making the main shaft unable to rotate. When braking the main shaft is needed, the brake band is tightened by rotating a brake screw to drive a nut mounted on the brake band to displace. The frictional force between the friction plate on the brake band and the brake wheel makes the brake wheel unable to rotate, and the corresponding ship main shaft is braked. This type of brake requires manual rotation of the brake screw to tightly hold the brake band and the brake wheel and reach a relatively large holding force to achieve the braking effect during braking of the ship main shaft. The operation intensity is large, and the friction plate is easily worn, and there is often a slipping phenomenon between the friction plate and the brake wheel. Therefore, the braking effect of this type of brake is often not very stable during actual use. Content of the Utility Model

[0003] Aiming at the above deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a brake for a ship main shaft, which can avoid the braking failure caused by slipping between the brake wheel and the brake band after braking the ship main shaft, and the braking process is convenient and labor-saving to operate.

[0004] To solve the above technical problem, a brake for a ship main shaft of the utility model includes a brake wheel fixedly connected to the ship main shaft, a brake band clamped on the brake wheel. Both ends of the brake band are connected to a brake screw through brake nuts. A brake base is provided below the brake wheel, and the brake band is connected to the brake base through a connecting member. At least one brake block is provided on the inner circumference of the brake band, and a brake slot corresponding to the brake block is provided on the outer circumference of the brake wheel. When the brake band and the brake wheel are clamped tightly, the brake block is inserted into the brake slot, and the corresponding side surfaces of both sides of the brake block in the circumferential direction of the brake wheel are attached to the corresponding side surfaces of the brake slot. A release spring is connected to the outer circumference of the brake band, and at least one release spring is correspondingly provided for each brake block.

[0005] In the above structure, since at least one braking block is provided on the inner circumference of the braking band, and a braking groove corresponding to the braking block is provided on the outer circumference of the braking wheel, when the braking band and the braking wheel are clamped tightly, the braking block is inserted into the braking groove, and the two side surfaces of the braking block are in contact with the corresponding side surfaces of the braking groove in the circumferential direction of the braking wheel. Then, when it is necessary to brake the ship's main shaft, rotating the braking screw will make the braking band close to the braking wheel. The connection between the braking wheel and the braking band is no longer achieved by relying on the friction between the two to make them integrated and prevent the braking wheel from rotating. Instead, the braking block on the braking band is clamped into the braking groove on the braking wheel to connect the two together. There will be no slipping phenomenon between the braking wheel and the braking band, and it is impossible for the braking to fail after the braking operation. The braking effect is extremely reliable. Moreover, during the braking process, it is only necessary to make the braking block on the braking band snap into the braking groove on the braking wheel and make the two side surfaces of the braking block in contact with the corresponding side surfaces of the braking groove. There is no need for the operator to apply a large operating force, and the braking process is convenient and labor-saving.

[0006] Also, since a release spring is connected to the outer circumference of the braking band, and at least one release spring is correspondingly provided for each braking block, when it is necessary to release the braking of the ship's main shaft, operate the braking screw to loosen the braking band's clamping on the braking wheel. After the braking band disengages from the braking wheel and loosens to a certain extent, the release spring will ensure that the corresponding braking block is pulled out of the braking groove, and the braking wheel can rotate freely. The braking band will maintain the distance between the braking block on it and the braking wheel under the action of the release spring, thus ensuring the normal operation of the ship's shafting.

[0007] In a preferred embodiment of the present invention, two to four braking blocks are provided on the inner circumference of the braking band. By adopting this embodiment, two to four braking blocks can ensure that the connection between the braking band and the braking wheel is firm and does not loosen, ensuring the braking effect.

[0008] In another preferred embodiment of the present invention, the braking block is riveted to the braking band. By adopting this embodiment, the connection between the braking block and the braking band is reliable and will not loosen.

[0009] In still another preferred embodiment of the present invention, the cross-section of the braking block is trapezoidal, and the cross-sectional shape of the braking groove corresponds to it. By adopting this embodiment, the braking block with a trapezoidal cross-section can facilitate entering and exiting the braking groove, making the braking operation more convenient.

[0010] In a further preferred embodiment of the present invention, the braking band is a steel strip. By adopting this embodiment, the steel strip has high strength and rigidity, and also has good elasticity, which can meet the use requirements.

[0011] Another further preferred embodiment of the present utility model is that the brake band is a stainless steel strip. With this embodiment, the stainless steel strip has strong corrosion resistance and good weather resistance, which can ensure its service life.

[0012] Another further preferred embodiment of the present utility model is that the release spring is a tension spring, and the other end of the tension spring is fixedly connected to a fixed bracket outside the brake band. With this embodiment, the release spring can directly pull out the brake block on the brake band, and the structure is simple and convenient for installation.

[0013] A further preferred embodiment of the present utility model is that each of the brake blocks is correspondingly provided with a release spring. With this embodiment, the requirement for releasing the brake block can be met. Description of the Drawings

[0014] The following further details the ship main shaft brake of the present utility model in conjunction with the drawings and specific embodiments.

[0015] Figure 1 is a schematic structural diagram of a specific embodiment of the ship main shaft brake of the present utility model;

[0016] Figure 2 is Figure 1 a sectional view of the structure shown;

[0017] Figure 3 is Figure 1 a schematic diagram of the structure shown in the release state.

[0018] In the figure: 1 - brake base, 2 - connecting piece, 3 - brake wheel, 4 - brake band, 5 - brake slot, 6 - brake block, 7 - release spring, 8 - brake screw, 9 - brake nut. Specific Embodiment

[0019] In Figure 1 and Figure 2In the illustrated ship main shaft brake, the brake wheel 3 is a wheel-shaped component fixed to the ship's main shaft. A brake band 4, made of steel, preferably stainless steel, is clamped around the outer circumference of the brake wheel 3. Below the brake wheel 3 is a brake base 1 fixed to the ship's hull. The brake band 4 is connected to the brake base 1 via a connector 2. Brake nuts 9 are rotatably supported on the connectors at both ends of the brake band 4. The brake nuts 9 at each end rotate in opposite directions and are connected to a brake screw 8. Thus, the brake nuts 9 connect the two ends of the brake band 4 to the brake screw 8. At least one brake block 6 is provided on the inner periphery of the brake band 4, preferably two to four brake blocks 6 are provided, and the brake blocks 6 are riveted to the brake band 4; a brake groove 5 corresponding to the brake block 6 is provided on the outer periphery of the brake wheel 3, and the cross-section of the brake block 6 is trapezoidal, and the cross-sectional shape of the brake groove 5 corresponds thereto; a release spring 7 is connected to the outer periphery of the brake band 4, and each brake block 6 is correspondingly provided with at least one release spring 7. As shown in the figure, each brake block 6 is preferably correspondingly provided with a release spring 7, and the release spring 7 is a tension spring, and the other end of the tension spring is fixedly connected to the fixed bracket outside the brake band 4.

[0020] A brake handwheel is provided at one end of a brake screw 8. Turning the brake handwheel causes the two brake nuts 9 to shift toward each other via the brake screw 8, thereby causing the brake band 4 to clamp against the outer circumference of the brake wheel 3, overcoming the tension of the release spring 7. The brake blocks 6 on the brake band 4 are now inserted into the brake slots 5 on the brake wheel 3, and the side surfaces of the brake blocks 6 align with the corresponding side surfaces of the brake slots 5 circumferentially of the brake wheel 3. Thus, the brake wheel 3 is integrally connected to the brake band 4 via the brake slots 5 and the brake blocks 6. Restricted by the brake band 4 and the brake base 1, the brake wheel 3 cannot rotate, thus braking the ship's main shaft. When the ship's main shaft needs to be operated, the brake handwheel is rotated in the opposite direction, causing the brake screw 8 to shift the two brake nuts 9 away from each other, gradually loosening the brake band 4 from the brake wheel 3. Under the tension of the release spring 7, each brake block 6 disengages its corresponding brake slot 5, and the brake band 4 also loses contact with the brake wheel 3. The brake wheel 3 is free, and the ship's main shaft can enter operation.

[0021] The above only lists some preferred embodiments of the present invention, but the present invention is not limited thereto and many improvements and modifications can be made. As long as the improvements and modifications are made based on the basic principles of the present invention, they should be considered to fall within the scope of protection of the present invention.

Claims

1. A ship main shaft brake, comprising a brake wheel (3) fixedly connected to the ship main shaft, a brake band (4) clamped around the brake wheel (3), both ends of the brake band (4) being connected to a brake screw (8) through a brake nut (9), a brake base (1) being provided below the brake wheel (3), and the brake band (4) being connected to the brake base (1) through a connecting member (2), characterized in that: At least one braking block (6) is provided on the inner circumference of the braking belt (4), and a braking slot (5) corresponding to the braking block (6) is provided on the outer circumference of the braking wheel (3). When the braking belt (4) is tightened around the braking wheel (3), the braking block (6) is inserted into the braking slot (5), and the two side surfaces of the braking block (6) are in contact with the corresponding side surfaces of the braking slot (5) in the circumferential direction of the braking wheel (3). A release spring (7) is connected to the outer circumference of the braking belt (4), and at least one release spring (7) is correspondingly provided for each braking block (6).

2. The ship main shaft brake according to claim 1, wherein: Two to four braking blocks (6) are provided on the inner circumference of the braking belt (4).

3. The marine main shaft brake according to claim 1 or 2, characterized in that: The braking block (6) is riveted to the braking belt (4).

4. The ship main shaft brake according to claim 1 or 2, characterized in that: The cross section of the braking block (6) is trapezoidal, and the cross-sectional shape of the braking slot (5) corresponds to it.

5. The ship main shaft brake according to claim 1, characterized in that: The braking belt (4) is a steel belt.

6. The ship main shaft brake according to claim 5, characterized in that: The braking belt (4) is a stainless steel belt.

7. The ship main shaft brake according to claim 1, characterized in that: The release spring (7) is a tension spring, and the other end of the tension spring is fixedly connected to a fixed bracket outside the braking belt (4).

8. The ship main shaft brake according to claim 1 or 7, characterized in that: One release spring (7) is correspondingly provided for each braking block (6).

Images