Explosion-proof ball with limiting assembly

Abstract

The utility model relates to the technical field of explosion -proof ball, specifically relates to a kind of explosion -proof ball with limiting component, comprising: main ball, bottom is provided with the travelling device for moving, top is provided with opening, inside is provided with accommodating cavity, ball cover device, it is arranged in the inside of accommodating cavity, cooperate the top opening of main ball to close accommodating cavity, and hand wheel device, ball cover device is connected by flexible connecting rope, the position of adjusting ball cover device in main ball inside;The utility model has the beneficial effects that: when handle assembly rotates to release flexible connecting rope and make the ball crown open, limiting rope gradually winds on connecting shaft with gear rotation, when ball crown moves to the set position, limiting rope is completely wound, prevents connecting shaft from continuing to rotate, to realize the hard limiting of handle assembly. The structure effectively prevents the idle stroke problem caused by excessive rotation of hand wheel, ensures that the rotation direction of hand wheel is always consistent with the movement direction of ball crown, improves the operation intuitiveness and opening and closing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof ball technology, specifically to an explosion-proof ball with a limiting component. Background Technology

[0002] Explosion-proof spheres, as an important safety protection device, are widely used in explosive disposal, hazardous materials storage, and other fields. Their core function is to achieve closure and opening through the cooperation of the main sphere and its cap, thereby effectively suppressing the spread of shock waves and fragments during an explosion, ensuring the safety of surrounding personnel and equipment. Traditional explosion-proof spheres typically use manual or mechanical drive methods to control the opening and closing of the cap. The transmission structure using a connecting rope and handwheel is widely used due to its ease of operation and high reliability.

[0003] In existing rope-driven explosion-proof spheres, the sphere's crown is connected to a handwheel via a connecting rope. Turning the handwheel retracts or extends the connecting rope, thus raising, lowering, and rotating the sphere, thereby opening and closing the main sphere. Specifically, when the connecting rope retracts, the sphere is lifted and closes with the main sphere; when the connecting rope extends, the sphere falls and rotates inside the main sphere, opening it. However, this structure has the following technical problems in practical use:

[0004] Limit function is incomplete:

[0005] When the connecting rope is retracted to its maximum position (the spherical crown is fully closed), the handwheel cannot continue to rotate, effectively preventing overload. However, when the connecting rope is released until the spherical crown is fully open, the handwheel can continue to rotate due to the lack of a hard limit structure, causing the connecting rope to continue to be released. If the handwheel is continued to be rotated at this time, the connecting rope will rewind onto the traction disc, changing from the "released state" to the "retracted state," but the direction of rotation of the handwheel has not changed, resulting in a mismatch between the direction of rotation of the handwheel and the actual direction of movement of the spherical crown. This inconsistency can mislead the operator, increase the risk of misoperation, and reduce operational efficiency. Ideally, the direction of rotation of the handwheel should always be consistent with the direction of movement of the spherical crown, but the existing structure cannot restrict the rotation of the handwheel after the connecting rope is fully released, resulting in directional confusion.

[0006] Empty travel issue:

[0007] During the opening of the sluice gate, if the operator slightly over-rotates the handwheel (i.e., the sluice gate is in position but the handwheel continues to rotate at a certain angle), the connecting rope will become slightly slack. When it is necessary to close the sluice gate later, the handwheel must first be rotated a certain amount of free travel to tighten the connecting rope before the sluice gate begins to move. This free-spinning phenomenon not only delays the response speed of the sluice gate but also reduces the precision of operation, making it difficult to quickly close or open the sluice gate.

[0008] Therefore, a blast-proof ball with a limiting component is needed to overcome the above problems. Utility Model Content

[0009] To address the aforementioned problems, this utility model provides an explosion-proof ball with a limiting component, thereby achieving the goal of solving the problems mentioned in the background art.

[0010] To achieve the above objectives, the present invention adopts the following technical solution: an explosion-proof ball with a limiting component, comprising: a main ball, a walking device for movement provided at the bottom, an opening provided at the top, and a receiving cavity provided inside; a ball cover device provided inside the receiving cavity, which cooperates with the top opening of the main ball to close the receiving cavity; and a handwheel device provided on the main ball, which is connected to the ball cover device by a flexible connecting rope to adjust the position of the ball cover device inside the main ball.

[0011] The handwheel device includes: a housing fixedly connected to the outside of the main ball; a transmission assembly disposed inside the housing and around which a flexible connecting rope is wound; a handle assembly connected to the transmission assembly, which, upon rotation, drives the flexible connecting rope to be released or retracted through the transmission assembly; and a limiting assembly disposed inside the housing for limiting the rotation angle of the transmission assembly.

[0012] As a further improvement to the above technical solution:

[0013] The transmission assembly includes: a traction disc rotatably connected to the inside of the housing via a connecting shaft, around which a flexible connecting rope is wound; a gear fixedly connected to the outside of the connecting shaft; a reduction gear set rotatably connected to the inside of the housing; and a transmission connection handle assembly.

[0014] The limiting component includes a limiting rope, one end of which is fixedly connected to one side of the gear, and the other end is fixedly connected to the inside of the housing. After the gear rotates, the limiting rope is wound around the connecting shaft.

[0015] The spherical cover device includes: a spherical crown, a pressure relief hole that passes through the top of the spherical crown, and a lug plate that is fixedly connected to the spherical crown and connected to the rotating shaft inside the main sphere through a long slot.

[0016] The main sphere is equipped with a support assembly for supporting the crown; the support assembly includes: a support fixedly connected to the inside of the main sphere, and a bolt passing through the inside of the support, the height of the bolt protruding from the top of the support being adjusted by a nut.

[0017] The main sphere is also equipped with a guide assembly for guiding the flexible connecting rope.

[0018] The beneficial effects of this utility model embodiment are as follows:

[0019] When the handle assembly rotates to release the flexible connecting rope and open the spherical crown, the limiting rope gradually winds around the connecting shaft as the gear rotates. Once the spherical crown reaches the set position, the limiting rope is fully wound around, preventing the connecting shaft from rotating further, thus achieving a hard limit on the handle assembly. This structure effectively prevents the problem of free travel caused by excessive handwheel rotation, ensuring that the handwheel's rotation direction is always consistent with the spherical crown's movement direction, improving operational intuitiveness and opening / closing efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a structural schematic diagram of the handwheel device of this utility model.

[0022] In the diagram: 1. Main sphere; 2. Spherical cover device; 3. Handwheel device; 4. Flexible connecting rope; 5. Support assembly; 6. Guide assembly; 7. Walking device;

[0023] 21. Spherical crown; 22. Pressure relief hole; 23. Lifting lug;

[0024] 31. Housing; 32. Transmission assembly; 33. Handle assembly; 34. Limiting assembly;

[0025] 321. Traction disc; 322. Connecting shaft; 323. Gear; 324. Reduction gear set;

[0026] 341. Limiting rope;

[0027] 51. Support; 52. Bolt; 53. Nut. Detailed Implementation

[0028] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0029] See Figures 1 to 2 This utility model discloses an explosion-proof ball with a limiting component, including a main ball 1, a ball cover device 2, and a handwheel device 3.

[0030] The main sphere 1 has a traveling device 7 at its bottom, which consists of multiple casters, one of which is equipped with a foot brake mechanism for locking the position. The top of the main sphere 1 has an opening, forming an internal cavity. Its structure consists of a hemisphere, a cap, and a flange. The main bearing surface of the flange adopts a combination of curved and cylindrical surfaces formed by forging and heat treatment, which together with the main sphere 1 constitute a high-strength protective body capable of withstanding explosive shock waves and blocking fragments from flying out.

[0031] The spherical cap device 2 is located inside the receiving cavity of the main sphere 1 and includes a spherical crown 21, a pressure relief hole 22, and a lifting lug plate 23. The spherical crown 21 and the flange of the main sphere 1 form a sealed contact through a precision-machined spherical surface, ensuring effective protection against shock wave leakage in the event of an explosion. The pressure relief hole 22 is located at the top of the spherical crown 21 and consists of multiple regularly arranged through holes for safely releasing internal pressure. The lifting lug plate 23 is fixed to the spherical crown 21 and connected to a rotating shaft inside the main sphere 1 through a long slot, enabling the spherical crown 21 to rotate.

[0032] The handwheel device 3 is located outside the main sphere 1 and is connected to the sphere cover device 2 via a flexible connecting rope 4. The flexible connecting rope 4 is made of high-strength steel wire rope, and its flexibility enables the system to have a self-buffering function at the moment of explosion, avoiding secondary fragmentation injuries.

[0033] The handwheel device 3 includes a housing 31, a transmission assembly 32, a handle assembly 33, and a limiting assembly 34. The transmission assembly 32 includes a traction disc 321, a connecting shaft 322, a gear 323, and a reduction gear set 324. The traction disc 321 is rotatably mounted inside the housing 31 via the connecting shaft 322 and has a flexible connecting rope 4 wound around it. The gear 323 is fixed to the connecting shaft 322 and meshes with the reduction gear set 324. The handle assembly 33 drives the gear 323 to rotate via the reduction gear set 324, thereby causing the traction disc 321 to wind and unwind the flexible connecting rope 4. The reduction gear set 324 is equipped with a friction plate linkage mechanism and a ratchet and pawl mechanism to achieve a two-way self-locking function, ensuring that the system can be stably stopped at any position.

[0034] The limiting component 34 includes a limiting rope 341, one end of which is fixed to the side of the gear 323, and the other end is fixed inside the housing 31. When the handle assembly 33 rotates to release the flexible connecting rope 4 and open the spherical crown 21, the limiting rope 341 gradually winds around the connecting shaft 322 as the gear 323 rotates. When the spherical crown 21 moves to the set position, the limiting rope 341 is completely wound around, preventing the connecting shaft 322 from continuing to rotate, thereby achieving a hard limit on the handle assembly 33. This structure effectively prevents the problem of free travel caused by excessive rotation of the handwheel, ensuring that the rotation direction of the handwheel is always consistent with the movement direction of the spherical crown 21, improving the intuitiveness of operation and the efficiency of opening and closing.

[0035] The main sphere 1 is equipped with a support assembly 5, including a support 51 fixed inside the main sphere 1 and a bolt 52 passing through the support 51. The bolt 52 has its protrusion height adjusted by a nut 53. When the main sphere 1 is closed, the support assembly 5 and the flexible connecting rope 4 jointly support the spherical crown 21, reducing the pressure of the lifting lug 23 on the rotating shaft. When open, the spherical crown 21 rotates in cooperation with the rotating shaft through the lifting lug 23. After reaching its position, it is limited by the flexible connecting rope 4 and the stop block inside the main sphere 1, further reducing the force on the rotating shaft. In addition, the main sphere 1 is equipped with a guide assembly 6 composed of pulleys and brackets to guide the movement path of the flexible connecting rope 4.

[0036] In addition, the support component 5 limits the movement of the spherical crown 21, so that when the spherical crown 21 is opened, it can only rotate and reset in a fixed direction.

[0037] This embodiment uses the hard limit design of the limit component 34 to ensure that the handle component 33 stops rotating immediately after the ball crown 21 is in the opening and closing position, eliminating the problems of inconsistent direction and empty stroke, and realizing fast and accurate opening and closing operation.

[0038] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0041] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A blast-proof ball with a limiting component, characterized in that, include: The main sphere (1) has a moving walking device (7) at the bottom and an opening at the top, and an internal receiving cavity. A spherical cover device (2) is disposed inside the receiving cavity, and cooperates with the top opening of the main sphere (1) to close the receiving cavity. The handwheel device (3) is set on the main ball (1) and connected to the ball cover device (2) by a flexible connecting rope (4) to adjust the position of the ball cover device (2) inside the main ball (1); The handwheel device (3) includes: The shell (31) is fixedly connected to the outside of the main sphere (1). The transmission assembly (32) is located inside the housing (31) and is wound with a flexible connecting rope (4). The handle assembly (33) is connected to the transmission assembly (32), and upon rotation, the transmission assembly (32) drives the flexible connecting rope (4) to extend or retract. A limiting component (34) is disposed inside the housing (31) and is used to limit the rotation angle of the transmission component (32).

2. The explosion-proof ball with a limiting component according to claim 1, characterized in that, The transmission assembly (32) includes: The traction disc (321) is rotatably connected to the inside of the housing (31) via a connecting shaft (322), and a flexible connecting rope (4) is wound around it. Gear (323), fixedly connected to the outside of connecting shaft (322), and The reduction gear set (324) is rotatably connected inside the housing (31) and is connected to the handle assembly (33) for transmission.

3. The explosion-proof ball with a limiting component according to claim 2, characterized in that, The limiting component (34) includes: The limiting rope (341) is fixedly connected at one end to one side of the gear (323) and at the other end to the inside of the housing (31). After the gear (323) rotates, the limiting rope (341) is wound around the connecting shaft (322).

4. The explosion-proof ball with a limiting component according to claim 1, characterized in that, The spherical cover device (2) includes: Crown (21), A pressure relief hole (22) is provided through the top of the spherical cap (21), and The lug plate (23) is fixedly connected to the spherical crown (21) and connected to the rotating shaft inside the main sphere (1) through the long slot.

5. The explosion-proof ball with a limiting component according to claim 4, characterized in that, The main sphere (1) is provided with a support component (5) for supporting the spherical crown (21); The support component (5) includes: Support (51), fixedly connected to the inside of the main sphere (1), and Bolt (52) is inserted inside the support (51), and the height of the bolt (52) protruding from the top of the support (51) is adjusted by nut (53).

6. The explosion-proof ball with a limiting component according to claim 1, characterized in that, The main sphere (1) is also provided with a guide assembly (6) for guiding the flexible connecting rope (4).

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