Earring bolt with oil injection function

Abstract

The utility model belongs to the technical field of mechanical connection, and discloses an earring bolt with an oil injection function, which comprises a bolt lug and a bolt long rod, the bolt lug is of an annular structure, and the bolt long rod is fixed on the outer ring side surface of the bolt lug; an oil injection port is formed in the outer ring side face, not connected with the bolt long rod, of the bolt lug piece and communicated with the inner ring face of the bolt lug piece. The connecting rod is provided with the two connecting rods, the short rod is provided with the oil injection channel, and the lateral space utilization rate of the earring bolt can be improved when the connecting rod is applied to matching of some specific complex parts. In terms of functions, the bolt structure design integrating multiple functions is achieved, the basic assembly requirements of all parts are met, oil injection is easy and convenient, the problem that oil injection is difficult due to the fact that the external field construction space is small is solved, and the daily use and maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical connection, and relates to an earring bolt used for connecting a hatch and an actuator, in particular to an earring bolt with an oil injection function. Background Art

[0002] In certain aircraft equipment connections, bearing / bushing connections are often used at joints to reduce friction or wear between structures, thereby improving equipment efficiency and extending its service life. However, in complex and harsh environments, the lubrication effectiveness of bearings / bushings in these joints decreases significantly, requiring maintenance personnel to frequently disassemble and oil them. This is very inconvenient when working in the field or in confined working spaces. In particular, when joints connect aircraft doors and actuators, the conventional longitudinal oiling port at the joint is obstructed by the door's design, making it impossible to oil the joint through the conventional opening. Therefore, how to efficiently and safely address the oiling issues in these areas warrants careful consideration. Utility Model Content

[0003] In order to solve the above problems, the utility model provides an earring bolt with an oil filling function. An oil filling port is designed on the side of the earring, thereby expanding the oil filling method of the earring, so that the earring oil filling is no longer limited to the longitudinal direction.

[0004] The technical solution of the utility model is as follows:

[0005] An earring bolt with an oil filling function comprises a bolt ear and a bolt long rod. The bolt ear is an annular structure, and the bolt long rod is fixed to the outer ring side of the bolt ear. An oil filling port is provided on the outer ring side of the bolt ear that is not connected to the bolt long rod, and the oil filling port is connected to the inner ring surface of the bolt ear.

[0006] Furthermore, it also includes a bolt short rod, which is fixed to the outer side of the oil filling port of the bolt ear.

[0007] Furthermore, a one-way pressure oil injection structure is provided in the short rod of the bolt.

[0008] Furthermore, the one-way pressure oil injection structure includes: a pressure oil injection nozzle, a spring and a steel ball. The short rod of the bolt has an oil injection channel connected to the oil injection port. A spring seat is provided in the oil injection channel. One end of the spring is connected to the steel ball. The spring and the steel ball are compressed between the spring seat and the pressure oil injection nozzle.

[0009] Furthermore, the pressure oiling nozzle is provided with an external thread, the bolt short rod is provided with an internal thread, and the pressure oiling nozzle and the bolt short rod are connected through threaded cooperation.

[0010] Furthermore, the long rod of the bolt and the short rod of the bolt are perpendicular.

[0011] The beneficial effects of the utility model are as follows:

[0012] This utility model provides an earring bolt with an oiling function. Structurally, unlike traditional earring bolts, this bolt features two connecting rods, the shorter of which provides an oiling channel. This design, when applied to certain complex parts, improves lateral space utilization. Functionally, it achieves a bolt structure design that integrates multiple functions. This not only meets the basic assembly requirements between various parts, but also facilitates and simplifies oiling, resolving the difficulty of oiling due to limited space available for field construction, thereby improving the efficiency of daily use and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the earring bolt with oil injection function of the utility model;

[0014] Figure 2 for Figure 1 sectional view of

[0015] Figure 3 This is a schematic diagram of the assembly of the earring bolt in the embodiment of the present utility model;

[0016] Among them, 1—bolt ear, 2—bolt long rod, 3—bolt short rod, 4—pressure oil injection nozzle, 5—threaded area, 6—steel ball, 7—spring, 8—oil injection channel, 9—assembly bolt, 10—pin hole, 11—hexagonal slot nut, 12—cotter pin, 13—bushing, 14—universal joint, 15—lock nut, 16—pull rod. DETAILED DESCRIPTION

[0017] This section is an embodiment of the present invention, which is used to explain and illustrate the technical solution of the present invention. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating directions or positional relationships are based on the orientations or positional relationships in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or case referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Therefore, features defined as "first", "second" and the like may explicitly or implicitly include more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrated connections; mechanical connections, point connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0020] Example 1:

[0021] An earring bolt with an oil filling function includes a bolt ear 1 and a bolt long rod 2. The bolt ear 1 is a ring structure, and the bolt long rod 2 is fixed to the outer ring side of the bolt ear 1; wherein, an oil filling port is opened on the outer ring side of the bolt ear 1 not connected to the bolt long rod 2, and the oil filling port is connected to the inner ring surface of the bolt ear 1.

[0022] It also includes a bolt short rod 3, which is fixed to the outside of the oil filling port of the bolt ear piece 1.

[0023] A one-way pressure oil injection structure is provided in the bolt short rod 3.

[0024] The one-way pressure oil injection structure includes: a pressure oil injection nozzle 4, a spring 7 and a steel ball 6. The short bolt rod 3 has an oil injection channel 8 connected to the oil injection port. A spring seat is provided in the oil injection channel 8. One end of the spring 7 is connected to the steel ball 6. The spring 7 and the steel ball 6 are compressed between the spring seat and the pressure oil injection nozzle 4.

[0025] The pressure oiling nozzle 4 is provided with an external thread, the bolt short rod 3 is provided with an internal thread, and the pressure oiling nozzle 4 and the bolt short rod 3 are connected through threaded matching.

[0026] The long bolt rod 2 and the short bolt rod 3 are perpendicular.

[0027] Example 2:

[0028] An earring bolt with oiling function comprises a bolt lug, a long and short bolt rods integrally connected to the lug at either side, and a pressure oiling nozzle. The short bolt rod has an oiling channel extending axially along the rod, and the pressure oiling nozzle is mounted on the outside of the channel. A matching bushing is mounted on the inside of the earring bolt lug. An electric pressure oiling gun is used to push open a steel ball within the pressure oiling nozzle, injecting lubricating oil into the axial oiling channel to lubricate the mating position of the bolt and bushing.

[0029] like Figure 1As shown, the lubricating earring bolt is manufactured from high-strength alloy steel through machining processes to meet strength requirements. It comprises a pressure oiling nozzle 4, a bolt lug 1, and a long rod 2 and a short rod 3 integrally connected to the lug via machining. The short rod 3 has an oiling channel 8 axially disposed on the bolt, which is threadedly connected to the pressure oiling nozzle 4.

[0030] like Figure 2 As shown, a steel ball 6 and a spring 7 are provided in the internal channel of the pressure oiling nozzle 4. The steel ball 6 is pressed against the outer body under the action of the spring 7. The staff inserts an electric pressure oiling gun into the oiling nozzle, pushes open the steel ball 6 inside the oiling nozzle, and delivers lubricating oil to the axial oiling channel 8. When the oiling gun is pulled out, the steel ball 6 inside the oiling nozzle returns to its original position under the action of the elastic force of the spring 7 to prevent oil leakage.

[0031] like Figure 3 As shown, the utility model has been applied to the connection and assembly of a certain type of aircraft door joint. In this example, the earring bolt 1, the assembly bolt 9, the bushing 13 and the universal joint 14 are assembled and connected. The rod end of the bolt 9 has a threaded area 5, and the threaded area 5 has a radially arranged pin hole 10. After the hexagonal slot nut 11 is matched with the threaded area 5 of the bolt rod, the cotter pin 12 is passed through the pin hole 10 to complete the locking of the entire bolt system. The oil outlet position of the earring bolt oil filling channel 5 is located in the middle of the bushing 13, and is matched with and connected to the oil groove of the bushing 13. The long rod end of the earring bolt has a threaded area 5, which is assembled and connected with the pull rod 16 through the locking nut 15 to form a pull rod linkage mechanism. The short rod 3 of the earring bolt has a large lateral space. The maintenance personnel do not need to disassemble the bolt. They only need to operate the oil gun near the outside of the pressure oiling nozzle 4 to complete the oiling work here, which is convenient and quick.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present invention, and these modifications or replacements should all be included in the protection scope of the present invention.

Claims

1. An earring bolt with oil injection function, characterized in that: The invention comprises a bolt lug (1) and a bolt long rod (2), wherein the bolt lug (1) is an annular structure, and the bolt long rod (2) is fixed to the outer ring side surface of the bolt lug (1); wherein an oil filling port is provided on the outer ring side surface of the bolt lug (1) not connected to the bolt long rod (2), and the oil filling port is connected to the inner ring surface of the bolt lug (1).

2. The earring bolt with oil injection function according to claim 1, characterized in that: It also includes a bolt short rod (3), which is fixed to the outside of the oil filling port of the bolt ear piece (1).

3. The earring bolt with oil injection function according to claim 2, characterized in that: A one-way pressure oil injection structure is provided in the bolt short rod (3).

4. The earring bolt with oil injection function according to claim 3, characterized in that: The one-way pressure oil injection structure comprises: a pressure oil injection nozzle (4), a spring (7) and a steel ball (6); an oil injection channel (8) communicating with the oil injection port is provided in the bolt short rod (3); a spring seat is provided in the oil injection channel (8); one end of the spring (7) is connected to the steel ball (6); the spring (7) and the steel ball (6) are compressed between the spring seat and the pressure oil injection nozzle (4).

5. The earring bolt with oil injection function according to claim 4, characterized in that: The pressure oil injection nozzle (4) is provided with an external thread, the bolt short rod (3) is provided with an internal thread, and the pressure oil injection nozzle (4) and the bolt short rod (3) are connected through threaded matching.

6. The earring bolt with oil injection function according to claim 2, characterized in that: The long bolt rod (2) and the short bolt rod (3) are perpendicular.

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