Safety braking device for balance winding drum of ship lift

Abstract

The utility model discloses a safety braking device for a ship lift balancing drum, which comprises braking units arranged in bilateral symmetry, each braking unit comprises a machine body, a hydraulic cavity is arranged on the inner upper portion of each machine body, a piston is arranged in each hydraulic cavity, a brake shoe assembly is arranged on one side of each machine body, and each brake shoe assembly comprises a shoe block, a brake pad and a brake pad. The tile is installed on one side of the machine body through a plurality of reset spring assemblies, a brake pad is arranged on the outer side of the tile, a brake pad is arranged on the outer side of the brake pad, and when the piston advances, the advancing stroke end of the piston makes spherical contact with the tile. According to the utility model, the piston and the tile are in spherical contact, and the tile has a certain follow-up amount along the spherical surface when the brake disc abuts against the brake pad due to large axial movement in the operation process, so that the abnormal wear caused by the fact that the friction surfaces of the brake disc and the tile are not parallel can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial brake technology field, concretely is a safe brake device for ship lift balance winding drum. BACKGROUND

[0002] The ship lift is an important traffic tool of water conservancy hub, and its safety is self-evident, and the balance winding drum device matched with the ship lift is to avoid that the water in the ship box leaks, and the ship compartment is lifted upward quickly to cause more serious impact accidents.The axial displacement of the brake disc of the balance winding drum increases due to working conditions, and the conventional safety brake cannot meet the working condition of the large displacement of the brake disc of the balance winding drum due to the small brake opening gap, and in the case that the brake opening gap is smaller than the displacement of the brake disc, the brake pad and the brake disc are prone to abnormal friction, resulting in safety accidents. SUMMARY

[0003] The utility model discloses a safe brake device for ship lift balance winding drum.

[0004] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A safe brake device for ship lift balance winding drum, comprising brake units arranged symmetrically left and right, the brake unit comprising a body, a hydraulic chamber is arranged on the inner upper part of the body, a piston is arranged in the hydraulic chamber, a brake shoe assembly is arranged on one side of the body, the brake shoe assembly comprising a shoe block, a brake pad and a brake pad, the shoe block is installed on one side of the body through a plurality of reset spring assemblies, the outer side of the shoe block is provided with the brake pad, the outer side of the brake pad is provided with the brake pad, and the front stroke end of the piston is in spherical surface contact with the shoe block when the piston advances.

[0006] Further, the front stroke end of the piston is provided with a convex ball head structure, and the inner wall of the shoe block is provided with a concave spherical surface structure.

[0007] Further, the reset spring assembly comprises a spring guide rod, an adjusting nut, a reset spring and a limiting sheet, one end of the spring guide rod is fixedly connected with the shoe block, the adjusting nut and the limiting sheet are arranged on one end of the spring guide rod through the body, the reset spring is arranged on the spring guide rod, one end of the reset spring is abutted on the limiting sheet, and the other end is abutted on the inner bottom wall of the spring hole of the body.

[0008] Further, the reset spring is a rectangular spring.

[0009] Further, the reset spring assembly has eight sets.

[0010] Further, the distance equalizing assembly between the block and the body comprises an adjusting screw, a locking nut and a guide pin, one end of the guide pin is fixedly connected with the block, the other end of the guide pin is connected with one end of the adjusting screw, and the other end of the adjusting screw is provided with the locking nut and penetrates through the body.

[0011] Further, the inner wall of the hydraulic cavity is sequentially provided with a main sealing groove, a guide ring groove, a secondary sealing groove and a dustproof ring groove from inside to outside, and the main sealing groove, the guide ring groove, the secondary sealing groove and the dustproof ring groove are respectively provided with a main sealing ring, a guide ring, a secondary sealing ring and a dustproof ring.

[0012] Further, the front end of the body is provided with an oil inlet communicated with the hydraulic cavity.

[0013] Further, the two sides of the body are respectively provided with lifting ears. Beneficial effects

[0014] 1、The piston and the block adopt spherical surface contact, in the running process, when the brake disc is abutted against the brake pad due to large axial movement, the block has certain follow-up along the spherical surface, so that abnormal wear caused by non-parallel friction surface between the brake disc and the block can be avoided.

[0015] 2、The safety brake device adopts a normally open type, the brake is opened through hydraulic pressure and the brake is released through a reset spring, so that the situation that an additional power source is needed to maintain the brake device to be opened for a long time is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is a structural schematic view of a preferred embodiment of the utility model;

[0017] Fig. 2 is a schematic view of the internal structure of a front view in the preferred embodiment of the utility model;

[0018] Fig. 3 is a schematic view of the internal structure of a top view in the preferred embodiment of the utility model;

[0019] In the drawing: body 1, piston 2, main sealing 3, guide ring 4, secondary sealing 5, dustproof ring 6, brake block assembly 7, reset spring assembly 8, distance equalizing assembly 9, brake disc 10, mounting bolt 11, mounting frame 12, lifting ear 100, mounting hole 101, oil inlet 102, block 700, brake pad 701, brake pad 702, spring guide rod 800, adjusting nut 801, reset spring 802, limiting piece 803, adjusting screw 900, locking nut 901, guide pin 902. DETAILED DESCRIPTION

[0020] The utility model will be further described in connection with the structure embodiment of the safety brake device and by referring to the drawings.

[0021] The safety brake device of the ship lift balance winding drum is only put into braking work when a large amount of water leakage in the ship box occurs, the application adopts a normally open type, the brake is released through hydraulic gate and reset spring, when the accident occurs, the pressure oil of the external system enters the brake unit oil cylinder, so as to provide sufficient braking force, ensure that the balance winding drum does not rotate, and avoid accidents.

[0022] Embodiment: see Figs. 1-3 As shown in a safety brake device for a ship lift balance winding drum, comprising left and right symmetrical brake units, the brake unit comprises a body 1, the inner upper part of the body 1 is provided with a hydraulic chamber, a piston 2 is arranged in the hydraulic chamber, one side of the body 1 is provided with a brake shoe assembly 7, the brake shoe assembly 7 comprises a shoe 700, a brake lining 701 and a brake pad 702, the shoe 700 is installed on one side of the body 1 through a plurality of reset spring assemblies 8, the outer side of the shoe 700 is provided with the brake lining 701, the outer side of the brake lining 701 is provided with the brake pad 702, when the piston 2 advances, the front stroke end of the piston 2 is in spherical contact with the shoe 700. The piston 2 and the shoe 700 adopt spherical contact, in the running process, when the brake disc 10 is abutted against the brake pad 702 due to large axial movement, because the shoe 700 is in spherical contact with the piston 2, the shoe 700 has a certain follow-up along the spherical surface, so that abnormal wear caused by the non-parallel friction surface between the brake disc and the shoe 700 can be avoided.

[0023] More specifically, the front stroke end of the piston 2 is provided with a convex ball head structure, and the inner wall of the shoe 700 is provided with a concave spherical surface structure.

[0024] In the embodiment, the reset spring assembly 8 comprises a spring guide rod 800, an adjusting nut 801, a reset spring 802 and a limiting piece 803, one end of the spring guide rod 800 is fixedly connected with the shoe 700, one end of the spring guide rod 800 penetrates through the body 1 and is provided with the adjusting nut 801 and the limiting piece 803, the reset spring 802 is arranged on the spring guide rod 800, one end of the reset spring 802 abuts against the limiting piece 803, and the other end abuts against the inner bottom wall of the spring hole of the body 1, the reset force can be adjusted by compressing the reset spring 802 through the adjusting nut 801, preferably, the reset spring 802 is a rectangular spring.

[0025] In the embodiment, there are eight sets of reset spring assemblies 8, and the eight sets of reset spring assemblies 8 are distributed on the outer four sides of the hydraulic chamber.

[0026] In this embodiment, a backlash equalization component 9 is also provided between the brake pad 700 and the body 1. The backlash equalization component 9 includes an adjusting screw 900, a tightening nut 901, and a guide pin 902. One end of the guide pin 902 is fixedly connected to the brake pad 700, and the other end of the guide pin 902 is connected to one end of the adjusting screw 900. The other end of the adjusting screw 900 passes through the body 1 and is provided with the tightening nut 901. By setting the backlash equalization component 9, the gap between the brake pad assembly 7 and the brake disc 10 can be adjusted so that the gap between the two sides of the brake disc 10 and the brake pad assembly 7 is equal.

[0027] In this embodiment, the inner wall of the hydraulic chamber is provided with a main sealing groove, a guide ring groove, a secondary sealing groove, and a dustproof ring groove from the inside out. The main sealing groove, guide ring groove, secondary sealing groove, and dustproof ring groove are respectively provided with a main seal 3, a guide ring 4, a secondary seal 5, and a dustproof ring 6. The main seal 3 is used to seal the high pressure of the external system (i.e., the working pressure when the braking device is engaged). The guide ring 4 is used to guide the piston in the cylinder to avoid hard contact between the piston and the inner wall of the cylinder, thereby preventing damage to the piston. The secondary seal 5 has a very good low-pressure sealing effect and can effectively seal the oil adhering to the piston during piston movement. The series seal formed by the main seal 3 and the secondary seal 5 can achieve a better sealing effect.

[0028] In this embodiment, the front end of the machine body 1 is provided with an oil inlet 102 that communicates with the hydraulic chamber.

[0029] In this embodiment, the machine body 1 is provided with lifting ears 100 on both sides, which facilitates the installation of the equipment.

[0030] like Fig. 2 During installation, the present invention is fixed to the mounting bracket 12 by mounting bolts 11. When braking is required, the pressure oil from the external system enters the hydraulic chamber through the oil inlet 102, pushing the piston 2. The piston 2 transmits the hydraulic pressure to the brake shoe assembly 7, causing the brake pads 702 to apply force to the brake disc 10, generating a set braking torque. At the same time, the brake shoe assembly 7 drives the spring guide rod 800 to further compress the return spring 802. When the pressure of the external system is released, the return spring overcomes the back pressure in the pipeline and the piston resistance, pulling the brake shoe assembly back, thereby realizing the opening of the brake.

[0031] When the pressure oil of the external system is released, the reset spring 802 pushes the spring guide rod 800 outward by pushing against the limiting sheet 803, drives the brake shoe assembly 7 to move, and makes it separate from the brake disc 10, so as to realize the opening of the brake and make the brake device be in the opening state. In the running process, when the brake disc 10 abuts against the brake sheet 702 due to the large axial movement, since the shoe block 700 is in spherical surface contact with the piston 2, the brake shoe assembly 7 will swing along with the swing of the brake disc 10, so as to avoid the abnormal wear caused by the non-parallel friction surface between the brake disc 10 and the brake pad 701. In the opening state of the safety brake device, there is enough opening gap, so as to ensure that the brake disc 10 of the balance reel does not abnormally rub against the brake sheet 702 in the running process, and when the brake disc moves, the brake shoe assembly 7 has a certain following amount along with the movement of the brake disc 10.

[0032] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A safety brake device for a ship-lifting machine balance winding drum, comprising brake units arranged symmetrically left and right, characterized in that: The brake unit comprises a body (1), an inner upper portion of the body (1) is provided with a hydraulic cavity, a piston (2) is arranged in the hydraulic cavity, one side of the body (1) is provided with a brake shoe assembly (7), the brake shoe assembly (7) comprises a shoe (700), a brake pad (701) and a brake block (702), the shoe (700) is installed on one side of the body (1) through a plurality of reset spring assemblies (8), an outer side of the shoe (700) is provided with the brake pad (701), an outer side of the brake pad (701) is provided with the brake block (702); when the piston (2) advances, a front stroke end of the piston (2) is in spherical surface contact with the shoe (700).

2. A safety brake device for the balance drum of a ship lift according to claim 1, characterized in that: A convex spherical head structure is arranged on the front stroke end of the piston (2), and a concave spherical surface structure is arranged on an inner wall of the shoe (700).

3. A safety brake device for the balance drum of a ship lift according to claim 1, characterized in that: The reset spring assembly (8) comprises a spring guide rod (800), an adjusting nut (801), a reset spring (802) and a limiting sheet (803), one end of the spring guide rod (800) is fixedly connected with the shoe (700), one end of the spring guide rod (800) is provided with the adjusting nut (801) and the limiting sheet (803) and passes through the body (1), the reset spring (802) is arranged on the spring guide rod (800), one end of the reset spring (802) abuts against the limiting sheet (803), and the other end of the reset spring (802) abuts against an inner bottom wall of a spring hole of the body (1).

4. A safety brake device for the balance drum of a ship lift according to claim 3, characterized in that: The reset spring (802) is a rectangular spring.

5. A safety brake device for the balance drum of a ship lift according to claim 1, characterized in that: There are eight sets of reset spring assemblies (8).

6. A safety brake device for the balance drum of a ship lift according to claim 1, characterized in that: The shoe (700) and the body (1) are further provided with a retreat distance equalizing assembly (9), the retreat distance equalizing assembly (9) comprises an adjusting screw (900), a clamping nut (901) and a guide pin (902), one end of the guide pin (902) is fixedly connected with the shoe (700), the other end of the guide pin (902) is connected with one end of the adjusting screw (900), and the other end of the adjusting screw (900) is provided with the clamping nut (901) and passes through the body (1).

7. A safety brake device for the balance drum of a ship lift according to claim 1, characterized in that: A main sealing groove, a guide ring groove, a secondary sealing groove and a dust ring groove are sequentially arranged on an inner wall of the hydraulic cavity from inside to outside, and a main sealing (3), a guide ring (4), a secondary sealing (5) and a dust ring (6) are respectively arranged in the main sealing groove, the guide ring groove, the secondary sealing groove and the dust ring groove.

8. A safety brake device for the balance drum of a ship lift according to claim 1, characterized in that: An oil inlet (102) in communication with the hydraulic cavity is arranged at a front end of the body (1).

9. A safety brake device for the balance drum of a ship lift according to claim 1, characterized in that: Lifting ears (100) are respectively arranged at two sides of the body (1).

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