Synchronized gear shaft structure

Abstract

The utility model belongs to the technical field of pharmaceutical equipment, food equipment, pesticide equipment, chemical equipment and the like, and particularly relates to a synchromesh gear shaft structure which comprises a gear shaft, a synchromesh gear and a locking nut, the synchromesh gear is sleeved at one end of the gear shaft, one end of the gear shaft is a conical surface, and the synchromesh gear is provided with a conical inner hole. The conical surface of the gear shaft is in interference fit with the conical inner hole of the synchromesh gear, and the locking nut is in threaded connection with the end of the gear shaft and abuts against the synchromesh gear. According to the synchromesh gear shaft structure, conical surface positioning between the shaft outer conical surface and the hole inner conical surface is utilized, high-pressure oil is conveyed to the grooves in the conical surfaces from the oil nozzle opening through a professional tool, the shaft outer conical surface and the hole inner conical surface are in interference fit, the locking nut abuts against the synchromesh gear for locking, the positioning effect is good, and the service life of the synchromesh gear shaft structure is prolonged. The method is suitable for high-precision positioning equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of equipment such as pharmaceuticals, foods, pesticides, and chemicals, and particularly relates to a synchronous gear shaft structure. Background Art

[0002] Conventional synchronous gear shafts feature a keyway milled into the shaft and a flat key installed. The mating synchronous gear's inner bore is also machined with a keyway. The shaft and bore mate, with the flat key transmitting power and torque. An interference fit between the shaft and bore can make installation and disassembly extremely inconvenient. A transition fit or clearance fit can result in large clearances, affecting equipment accuracy. Therefore, for high-precision equipment, this structure can significantly reduce accuracy due to cumulative errors and loose fits. Utility Model Content

[0003] To address the above technical issues, the present invention provides a synchronous gear shaft structure that is more convenient and reliable for assembly and disassembly, unlike conventional synchronous gear shaft structures. It requires specialized assembly and disassembly tools, utilizing the tapered surface between the shaft's outer tapered surface and the hole's inner tapered surface for positioning, thereby achieving effective locking, positioning, and power and torque transmission.

[0004] The utility model provides a synchronous gear shaft structure, comprising:

[0005] A gear shaft, a synchronous gear and a locking nut, wherein the synchronous gear is sleeved on one end of the gear shaft, one end of the gear shaft is a conical surface, and the synchronous gear has a conical inner hole. The conical surface of the gear shaft and the conical inner hole of the synchronous gear are interference fit, and the locking nut is threadedly connected to the end of the gear shaft and abuts against the synchronous gear.

[0006] Furthermore, one end of the gear shaft has an axial oil nozzle port, a groove is provided on the conical surface of the gear shaft, the groove is arranged along the circumference of the conical surface of the gear shaft, and an oil pressure channel is also provided inside the gear shaft, the oil pressure channel connects the oil nozzle port and the groove.

[0007] Furthermore, the groove is arranged in the middle of the conical surface.

[0008] Furthermore, the oil nozzle is a universal interface for a high-pressure oil pump.

[0009] Furthermore, the synchronous gear and the locking nut are indirectly offset against each other via a washer.

[0010] The beneficial effects of the utility model are:

[0011] The synchronous gear shaft structure of the utility model utilizes the conical surface between the outer conical surface of the shaft and the inner conical surface of the hole for positioning. High-pressure oil is delivered from the oil nozzle to the groove on the conical surface through a professional tool, so that the outer conical surface of the shaft and the inner conical surface of the hole have an interference fit, and the locking nut is pressed against the synchronous gear for locking. The positioning effect is good and it is suitable for high-precision positioning equipment. The gear shaft and the synchronous gear are difficult to disengage. Therefore, the structure can withstand high torque and has high transmission efficiency.

[0012] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic structural diagram of the synchronous gear shaft structure of the present utility model;

[0015] Figure 2 This is a schematic diagram of the gear shaft structure of the present utility model.

[0016] In the picture:

[0017] 1. Gear shaft; 11. Conical surface; 12. Oil nozzle; 13. Oil pressure channel; 14. Groove; 2. Synchronous gear; 3. Lock nut. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0019] like Figure 1 and Figure 2 As shown, the utility model provides a synchronous gear shaft structure, including:

[0020] Gear shaft 1, synchronous gear 2 and locking nut 3, the synchronous gear 2 is sleeved on one end of the gear shaft 1, one end of the gear shaft 1 is a conical surface 11, the synchronous gear 2 has a conical inner hole, the conical surface 11 of the gear shaft 1 and the conical inner hole of the synchronous gear 2 are interference fit, and the locking nut 3 is threadedly connected to the end of the gear shaft 1 and abuts against the synchronous gear 2.

[0021] One end of the gear shaft 1 has an axial oil nozzle port 12, and a groove 14 is provided on the conical surface 11 of the gear shaft 1. The groove 14 is arranged along the circumference of the conical surface 11 of the gear shaft 1. An oil pressure channel 13 is also provided inside the gear shaft 1. The oil pressure channel 13 connects the oil nozzle port 12 and the groove 14. The oil nozzle port 12 is a universal interface for a high-pressure oil pump.

[0022] High-pressure oil is delivered to the oil nozzle 12 by a high-pressure oil pump. The high-pressure oil flows through the groove 14 on the conical surface 11 of the gear shaft 1. The high-pressure oil can be squeezed into the conical surface 11, expanding the conical surface 11 and fixing the gear shaft 1 and the synchronous gear shaft 2.

[0023] In order to facilitate the tightening of the gear shaft 1 and the synchronous gear shaft 2 , the groove 14 is provided in the middle of the conical surface 11 .

[0024] In order to increase the stability of the structure, the synchronous gear 2 and the locking nut 3 are indirectly offset by a washer.

[0025] Working principle:

[0026] It is easy to install and adjust. During installation, after adjusting the transmission pair to the appropriate position, two people are required to work at the same time. One person operates a special disassembly and assembly tool, such as a high-pressure oil pump, which allows high-pressure oil to enter the gear shaft 1 through the oil nozzle 12 and enter the groove 14 through the oil pressure channel 13, guiding the high-pressure oil into the conical surface. The conical positioning surfaces of the two are expanded by the action of the high-pressure oil. At the same time, the other person tightens the locking nut 3 to complete the installation and adjustment. After the pressure is released, the positioning cone surfaces are tightly engaged.

[0027] Disassembly is easy. Before disassembly, the locking nut 3 needs to be loosened and disengaged for a few turns. The optimal distance between the locking nut 3 and the synchronous gear 2 is 5-8mm. In order to avoid unnecessary mechanical damage during disassembly, the locking nut 3 must not be removed. A single person operates a special disassembly and assembly tool to allow high-pressure oil to pass through the oil nozzle 12 into the interior of the gear shaft 1, and through the oil pressure channel 13 into the groove 14, guiding the high-pressure oil into the conical surface, so that the conical positioning surfaces of the two are pushed open by the action of the high-pressure oil, and the synchronous gear 2 is separated from the gear shaft 1, thereby completing the disassembly.

[0028] By adjusting the taper size of the synchronous gear 2 and the gear shaft 1, positioning at any position can be achieved with high positioning accuracy, and it is suitable for high positioning accuracy equipment. After engagement and positioning, the two are difficult to separate without special disassembly tools. Therefore, this structure can withstand high torque and has high transmission efficiency.

[0029] The synchronous gear shaft structure of the present invention requires special disassembly tools for assembly and disassembly. If there are no special disassembly tools, forced disassembly will cause damage to the positioning cone surface (the cone surface of the synchronous gear 2 and the gear shaft 1), and even in severe cases, the entire machine will be scrapped.

[0030] In summary, the synchronous gear shaft structure of the present invention utilizes the conical surface between the outer conical surface of the shaft and the inner conical surface of the hole for positioning, and uses professional tools to deliver high-pressure oil from the oil nozzle to the groove on the conical surface, so that the outer conical surface of the shaft and the inner conical surface of the hole have an interference fit, and are locked against the synchronous gear by a locking nut. The positioning effect is good and it is suitable for high-precision positioning equipment. The gear shaft and the synchronous gear are difficult to disengage. Therefore, the structure can withstand high torque and has high transmission efficiency.

[0031] The various devices selected in this application are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0032] In the description of the embodiments of the present invention, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or 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 the present invention based on the specific circumstances.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate 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.

[0034] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A synchronous gear shaft structure, characterized in that: include: A gear shaft (1), a synchronous gear (2) and a locking nut (3); the synchronous gear (2) is sleeved on one end of the gear shaft (1); one end of the gear shaft (1) is a conical surface (11); the synchronous gear (2) has a conical inner hole; the conical surface (11) of the gear shaft (1) and the conical inner hole of the synchronous gear (2) are interference fit; the locking nut (3) is threadedly connected to the end of the gear shaft (1) and abuts against the synchronous gear (2).

2. The synchronous gear shaft structure according to claim 1, characterized in that: One end of the gear shaft (1) is provided with an axial oil nozzle (12); a groove (14) is provided on the conical surface (11) of the gear shaft (1); the groove (14) is arranged along the circumference of the conical surface (11) of the gear shaft (1); an oil pressure channel (13) is further provided inside the gear shaft (1); the oil pressure channel (13) communicates with the oil nozzle (12) and the groove (14).

3. The synchronous gear shaft structure according to claim 2, characterized in that: The groove (14) is arranged in the middle of the conical surface (11).

4. The synchronous gear shaft structure according to claim 2, characterized in that: The oil nozzle port (12) is a universal interface for a high-pressure oil pump.

5. The synchronous gear shaft structure according to claim 1, characterized in that: The synchronous gear (2) and the locking nut (3) are indirectly offset against each other via a washer.

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