Keel chain structure

Abstract

The utility model provides a keel chain structure and belongs to the technical field of keel chains. Comprising a plurality of keel units which are hinged and matched end to end, one end of each keel unit is provided with a chain link convex part, the other end of each keel unit is provided with a chain link concave part, and the chain link convex part of one keel unit is hinged to the chain link concave part of the other keel unit through a connecting shaft between every two adjacent keel units; the connecting shaft penetrates through the chain link convex part and the chain link concave part which are connected, the interior of the connecting shaft is hollow and is filled with lubricating oil, a horizontal groove is formed in the surface of the connecting shaft, a ball is embedded in the bottom of the horizontal groove, one part of the ball is located in the cavity of the connecting shaft, and the other part of the ball is located in the horizontal groove and is flush with the outer edge face of the connecting shaft. According to the utility model, the self-lubricating structure is arranged, so that the smooth use effect during long-term use is ensured, each unit is convenient to disassemble and assemble, the later maintenance and the supplement of lubricating oil are facilitated, and the overall use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of keel chains, in particular to a keel chain structure. Background Art

[0002] A keel-like drag chain is commonly used on cables in mechanical equipment. Currently, existing keel chains generally include a drag chain keel fixing structure disclosed in Chinese Patent Publication No. CN220850573U, which typically comprises multiple units hinged end-to-end to form a keel structure.

[0003] However, during long-term use, the hinges of the above-mentioned keel chain structure will rust and wear, causing problems such as jamming, and the use is not smooth. Therefore, the present application provides a keel chain structure to solve the above technical problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a keel chain structure to solve the problem that the keel chain structure in the prior art is rusted and worn, resulting in jamming and discomfort in later use.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A keel chain structure comprises a plurality of keel units hinged end to end, wherein one end of each keel unit is provided with a convex link portion and the other end is provided with a concave link portion, and between adjacent keel units, the convex link portion of one keel unit is hingedly connected to the concave link portion of another keel unit via a connecting shaft;

[0007] The connecting shaft passes through the connected chain link protrusions and the chain link recesses. The interior of the connecting shaft is hollow and filled with lubricating oil. A horizontal groove is provided on the surface of the connecting shaft. A ball is embedded in the bottom of the horizontal groove. One part of the ball is located inside the cavity of the connecting shaft, and the other part is located in the horizontal groove and aligned with the outer edge of the connecting shaft.

[0008] Optionally, an insertion cavity is provided in the middle of the convex portion of the chain link, and insertion holes aligned with the insertion cavity are provided on both sides of the concave portion of the chain link.

[0009] Optionally, the connecting shaft passes through the aligned insertion cavity and the insertion hole to form a movable connection between two adjacent keel units.

[0010] Optionally, both ends of the connecting shaft are threadedly fitted with limit caps.

[0011] Optionally, the end of the connecting shaft is provided with an opening communicating with the internal cavity thereof.

[0012] Optionally, a sealing plug is fixed inside the limiting cap, and the sealing plug is sealed with the opening at the end of the connecting shaft.

[0013] Optionally, at least two balls are provided and located at both ends of the connecting shaft.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] In the above scheme, thanks to the setting of the connecting shaft, adjacent keel units can be movably connected to form a keel chain structure, and in conjunction with the horizontal groove and ball bearings set at the end of the connecting shaft and the lubricating oil liquid filled in the hollow interior of the connecting shaft, when the adjacent keel units rotate with the connecting shaft as the axis, the ball bearings will roll and bring out the lubricating oil liquid in the connecting shaft, realizing automatic lubrication, so that the keel chain structure can still maintain a smooth effect during long-term use.

[0016] In the above scheme, thanks to the setting of the limit caps at both ends of the connecting shaft, the connecting shaft can be easily disassembled and assembled, and the lubricating oil in the connecting shaft can be easily replenished, which is beneficial to subsequent maintenance and repair.

[0017] In summary, the device is provided with a self-lubricating structure, which ensures smooth use during long-term use, and each unit is easy to disassemble and assemble, which is conducive to later maintenance and replenishment of lubricating oil, and the overall use is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and enable those skilled in the relevant art to make and use the invention.

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 is a structural diagram of the keel unit;

[0021] Figure 3 It is a structural diagram of the connecting shaft;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the connecting shaft in the first embodiment;

[0023] Figure 5 Schematic diagram of the cross-sectional structure of the connecting shaft in the second embodiment.

[0024] [reference numerals]

[0025] 1. Keel unit; 101. Chain link protrusion; 102. Chain link concave portion; 3. Insertion cavity; 4. Insertion hole; 5. Connecting shaft; 6. Limiting cap; 7. Horizontal groove; 8. Ball; 9. Sealing plug.

[0026] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, devices and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0027] The following describes a keel chain structure provided by the present invention in detail, with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0028] It should be noted that references in the specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes such specific features, structures, or characteristics. In addition, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0029] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0030] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0031] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0032] like Figure 1 and Figure 2 As shown, this embodiment 1 provides a keel chain structure, including a plurality of keel units 1 that are hingedly connected end to end, one end of each keel unit 1 being configured as a chain link protrusion 101, and the other end being configured as a chain link recess 102. Between adjacent keel units 1, the chain link protrusion 101 of one keel unit 1 and the chain link recess 102 of another keel unit 1 are hingedly connected via a connecting shaft 5. Specifically, the connecting shaft 5 passes through the connected chain link protrusions 101 and the chain link recesses 102. An interpenetration cavity 3 is provided in the middle of the chain link protrusion 101, and interpenetration holes 4 aligned with the interpenetration cavity 3 are provided on both sides of the chain link recess 102. The connecting shaft 5 passes through the aligned interpenetration cavity 3 and the interpenetration holes 4, forming a movable connection between two adjacent keel units 1.

[0033] At the same time, cooperate Figure 3 and Figure 4 As shown, both ends of the connecting shaft 5 are threadedly fitted with limiting caps 6 , thereby limiting the two ends of the connecting shaft 5 so that it is located between adjacent keel units 1 .

[0034] The interior of the connecting shaft 5 is hollow and filled with lubricating oil. A horizontal groove 7 is formed on the surface of the connecting shaft 5. A ball 8 is fitted into the bottom of the groove 7. One portion of the ball 8 is located inside the cavity of the connecting shaft 5, while the other portion is located in the groove 7 and aligned with the outer edge of the connecting shaft 5. When the connecting shaft 5 is connected to the adjacent keel unit 1, the ball 8 can bring the lubricating oil in the connecting shaft 5 to the surface, creating a self-lubricating effect.

[0035] In addition, the end of the connecting shaft 5 is provided with an opening communicating with the internal cavity thereof, and a sealing plug 9 is fixed inside the limiting cap 6 , and the sealing plug 9 is sealed in cooperation with the opening at the end of the connecting shaft 5 .

[0036] In the first embodiment, a horizontal groove 7 is provided at each end of the connecting shaft 5, and the balls 8 are provided in each horizontal groove 7. In other embodiments, Figure 5In the second embodiment shown, a horizontal groove 7 is symmetrically provided at both ends of the connecting shaft 5 , and the balls 8 are provided in each of the horizontal grooves 7 .

[0037] The working principle provided by the present invention is that the keel chain structure can, when in use, flexibly connect adjacent keel units 1 through the connecting shaft 5 to form a keel chain structure, and utilizes the cooperation of the horizontal groove 7 at the end of the connecting shaft 5, the ball 8 and the hollow interior of the connecting shaft 5 filled with lubricating oil, so that when the adjacent keel units 1 rotate with the connecting shaft 5 as the axis, the ball 8 will roll and bring out the lubricating oil in the connecting shaft 5, realizing automatic lubrication, so that the keel chain structure can still maintain a smooth effect during long-term use.

[0038] At the same time, since the two ends of the connecting shaft 5 are limited by threaded limit caps 6, the connecting shaft 5 can be easily disassembled and assembled, and the lubricating oil in the connecting shaft 5 can be easily replenished, which is beneficial to later maintenance and repair.

[0039] In summary, the device is provided with a self-lubricating structure, which ensures smooth use during long-term use, and each unit is easy to disassemble and assemble, which is conducive to later maintenance and replenishment of lubricating oil, and the overall use is convenient.

[0040] This invention encompasses any alternatives, modifications, equivalents, and solutions that do not depart from the spirit and scope of this invention. To provide a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments of this invention, but those skilled in the art will be able to fully understand this invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A keel chain structure, comprising a plurality of keel units (1) hingedly connected end to end, characterized in that: One end of the keel unit (1) is configured as a chain link convex portion (101), and the other end is configured as a chain link concave portion (102); between adjacent keel units (1), the chain link convex portion (101) of one keel unit (1) and the chain link concave portion (102) of another keel unit (1) are hingedly connected via a connecting shaft (5); The connecting shaft (5) passes through the connected chain link protrusions (101) and the chain link recesses (102); the interior of the connecting shaft (5) is hollow and filled with lubricating oil; a horizontal groove (7) is provided on the surface of the connecting shaft (5); a ball (8) is embedded in the bottom of the horizontal groove (7); a portion of the ball (8) is located inside the cavity of the connecting shaft (5), and the other portion is located in the horizontal groove (7) and is aligned with the outer edge of the connecting shaft (5).

2. The keel chain structure according to claim 1, characterized in that: An insertion cavity (3) is provided in the middle of the chain link convex portion (101), and insertion holes (4) aligned with the insertion cavity (3) are provided on both sides of the chain link concave portion (102).

3. The keel chain structure according to claim 2, characterized in that: The connecting shaft (5) passes through the aligned insertion cavity (3) and the insertion hole (4), forming a movable connection between two adjacent keel units (1).

4. The keel chain structure according to claim 1, characterized in that: The two ends of the connecting shaft (5) are threadedly fitted with limiting caps (6).

5. The keel chain structure according to claim 4, characterized in that: The end of the connecting shaft (5) is provided with an opening communicating with the internal cavity thereof.

6. The keel chain structure according to claim 5, characterized in that: A sealing plug (9) is fixed inside the limiting cap (6), and the sealing plug (9) is in sealing cooperation with the opening at the end of the connecting shaft (5).

7. The keel chain structure according to claim 1, characterized in that: At least two balls (8) are provided and are located at both ends of the connecting shaft (5).

Images