Bevel gear

Abstract

The utility model discloses a bevel gear, relates to the technical field of gears, and adopts the technical scheme that the bevel gear comprises a gear body, a connecting hole is formed in the center of the gear body, a spline housing is detachably connected in the connecting hole, a plurality of spline grooves are formed in the inner circumferential wall of the spline housing, and the spline housing comprises an insertion sleeve and a threaded sleeve rotationally connected to the insertion sleeve; a plurality of inserting strips are arranged on the outer side wall of the inserting sleeve, a plurality of inserting grooves for inserting the inserting strips are formed in the inner circumferential wall of the connecting hole, an external thread structure is arranged on the outer circumferential wall of the threaded sleeve, and an internal thread structure matched with the external thread structure is arranged on the inner circumferential wall of the connecting hole. The spline housing is convenient, simple, time-saving and labor-saving to disassemble and assemble, so that the spline housing is convenient to replace, normal use of the bevel gear is guaranteed, and the bevel gear is made of alloy steel materials and is good in durability.

Description

Technical Field

[0001] This utility model relates to the field of gear technology, specifically to bevel gears. Background Technology

[0002] Bevel gears, also known as conical gears, are widely used in industrial transmission equipment such as vehicle differentials, locomotives, ships, power plants, steel mills, and railway track inspection. They are typically classified into various structures based on factors such as the number of teeth, module, pressure angle, addendum, dedendum, face cone angle, split cone angle, root cone angle, back cone distance, crown distance, mounting distance, fixed chord tooth thickness, fixed chord tooth height, displacement coefficient, and backlash.

[0003] Existing bevel gears typically include a gear body with a shaft hole at the center. A rotating shaft can be configured to fit the shaft hole with an interference fit, thereby fixing the bevel gear to the shaft. However, this connection method is only suitable for locations that do not bear large torque. For locations that need to bear large torque, this method is not suitable.

[0004] The existing method involves creating a spline groove on the inner wall of the shaft hole and setting a spline at one end of the shaft to match the spline groove, so that the bevel gear and the shaft are connected by the spline. The spline connection can withstand a large torque, but there are still shortcomings: because the spline groove is shallow, it is prone to wear or even deformation after long-term use. Since the spline groove is integrated with the gear body, it cannot be replaced, which will affect the normal use of the bevel gear. Utility Model Content

[0005] The purpose of this utility model is to provide a bevel gear to solve the above-mentioned problems.

[0006] This utility model achieves the above-mentioned objectives through the following technical solution: a bevel gear, including a gear body, a connecting hole at the center of the gear body, a spline sleeve detachably connected to the connecting hole, a plurality of spline grooves on the inner peripheral wall of the spline sleeve, the spline sleeve including a insert sleeve and a threaded sleeve rotatably connected to the insert sleeve, a plurality of insert strips provided on the outer peripheral wall of the insert sleeve, a plurality of slots for inserting the insert strips provided on the inner peripheral wall of the connecting hole, an external thread structure provided on the outer peripheral wall of the threaded sleeve, and an internal thread structure matching the external thread structure provided on the inner peripheral wall of the connecting hole.

[0007] As a further feature of this invention, the spline sleeve also includes a connecting cover fixedly connected to the threaded sleeve, and the connecting cover has several through holes.

[0008] As a further feature of this invention, the gear body is provided with a groove for embedding the connecting cover.

[0009] As a further feature of this invention, an elastic washer is provided on the bottom wall of the groove, and the combined thickness of the elastic washer and the connecting cover is greater than the groove depth.

[0010] As a further feature of this invention, the number of inserts is four, and the four inserts are arranged in a cross-shaped symmetrical distribution with the central axis of the insert as the center.

[0011] As a further feature of this invention, the gear body is made of alloy steel.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] When the spline sleeve needs to be replaced, this utility model only requires pulling out the shaft first, then unscrewing the threaded sleeve outward while pulling the insert sleeve upward, so that the threaded sleeve can be unscrewed from the inside of the connecting hole, and then the insert sleeve can be pulled out from the inside of the connecting hole, thus realizing the disassembly of the spline sleeve. The entire disassembly and assembly operation is relatively convenient and simple, saving time and effort, thereby facilitating the replacement of the spline sleeve and ensuring the normal use of the bevel gear. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0016] Figure 3 This is a schematic diagram of the gear body in this utility model;

[0017] Figure 4 This is a schematic diagram of the spline sleeve in this utility model.

[0018] Reference numerals in the attached drawings: 1. Gear body; 2. Connecting hole; 3. Spline groove; 4. Insert sleeve; 5. Threaded sleeve; 6. Insert bar; 7. Slot; 8. Connecting cover; 9. Through hole; 10. Embedded groove; 11. Elastic washer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4As shown, the bevel gear includes a gear body 1, which is made of alloy steel, giving it good strength and toughness and ensuring its durability. A connecting hole 2 is provided at the center of the gear body 1, and a spline sleeve is detachably connected within the connecting hole 2. Several spline grooves 3 are formed on the inner circumferential wall of the spline sleeve. The spline sleeve includes a insert 4 and a threaded sleeve 5 rotatably connected to the insert 4. Several insert bars 6 are provided on the outer wall of the insert 4, and several insertion grooves 6 are formed on the inner circumferential wall of the connecting hole 2. The slot 7 into which the insert 6 is inserted has an external thread structure on the outer peripheral wall of the threaded sleeve 5 and an internal thread structure matching the external thread structure on the inner peripheral wall of the connecting hole 2. Therefore, when installing the spline sleeve, the insert sleeve 4 can be inserted into the connecting hole 2 first, causing the insert 6 to be inserted into the slot 7. When the insert sleeve 4 is fully inserted, the threaded sleeve 5 moves to the opening position of the connecting hole 2, allowing the threaded sleeve 5 to be screwed in independently. Through the connection of the external and internal thread structures, the threaded sleeve 5 is screwed into the connecting hole 2, achieving a threaded connection between the threaded sleeve 5 and the connecting hole 2. When a splined shaft is inserted into a splined sleeve, the splines pass sequentially through the spline groove 3 inside the insert sleeve 4 and the threaded sleeve 5. As the shaft rotates, the threaded connection between the threaded sleeve 5 and the connecting hole 2, the limiting effect of the slot 7 on the insert 6, and the limiting effect of the spline groove 3 on the splines, lock the spline groove 3 inside the connecting hole 2, ensuring a secure installation of the splined sleeve within the connecting hole 2. If the splined sleeve becomes worn and deformed due to long-term use, simply pull out the shaft, then simultaneously screw the threaded sleeve 5 outwards while lifting the insert sleeve 4 to straighten the threaded sleeve. Screw sleeve 5 out from inside connecting hole 2, and then pull sleeve 4 out from inside connecting hole 2 to disassemble spline sleeve. The entire disassembly and assembly operation is relatively convenient and simple, saving time and effort, thus facilitating the replacement of spline sleeve and ensuring the normal use of bevel gear. There are four inserts 6, which are symmetrically distributed in a cross shape with the central axis of sleeve 4 as the center. After the spline sleeve is installed inside connecting hole 2, all four inserts 6 can be inserted into slot 7. The slot 7 limits the insertion of inserts 6, which can improve the installation firmness of spline sleeve inside connecting hole 2.

[0021] Please see Figure 2-4As shown, the spline sleeve also includes a connecting cover 8 fixedly connected to the threaded sleeve 5. The connecting cover 8 has several through holes 9. When it is necessary to tighten the threaded sleeve 5, a tool can be inserted into the through holes 9 to apply force, causing the connecting cover 8 to rotate. The through holes 9 provide a force point for tightening the threaded sleeve 5, making the operation easier and less strenuous. Furthermore, the gear body 1 has a groove 10 for the connecting cover 8 to be inserted. After the spline sleeve is installed, the connecting cover 8 will be inserted into the groove 10, thus concealing the connecting cover 8 and preventing accidental contact. This causes the connection between the threaded sleeve 5 and the connecting hole 2 to loosen, thereby improving the connection strength of the spline sleeve inside the connecting hole 2. An elastic washer 11 is provided on the bottom wall of the groove 10, and the thickness of the elastic washer 11 and the connecting cover 8 is greater than the groove depth of the groove 10. After the connecting cover 8 is embedded in the groove 10, it will squeeze the elastic washer 11, causing the elastic washer 11 to undergo elastic deformation, thereby applying an upward thrust to the connecting cover 8 in the opposite direction, making the thread engagement between the threaded sleeve 5 and the connecting hole 2 tighter, and improving the connection strength between the threaded sleeve 5 and the connecting hole 2.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bevel gear, comprising a gear body (1), characterized in that: The gear body (1) has a connecting hole (2) at its center. A spline sleeve is detachably connected to the connecting hole (2). The inner peripheral wall of the spline sleeve has several spline grooves (3). The spline sleeve includes a plug sleeve (4) and a threaded sleeve (5) rotatably connected to the plug sleeve (4). Several inserts (6) are provided on the outer peripheral wall of the plug sleeve (4). Several slots (7) for inserting the inserts (6) are provided on the inner peripheral wall of the connecting hole (2). An external thread structure is provided on the outer peripheral wall of the threaded sleeve (5). An internal thread structure matching the external thread structure is provided on the inner peripheral wall of the connecting hole (2).

2. The bevel gear according to claim 1, characterized in that: The spline sleeve also includes a connecting cover (8) fixedly connected to the threaded sleeve (5), and the connecting cover (8) has several through holes (9).

3. The bevel gear according to claim 2, characterized in that: The gear body (1) has a groove (10) for embedding the connecting cover (8).

4. The bevel gear according to claim 3, characterized in that: An elastic washer (11) is provided on the bottom wall of the groove (10), and the thickness of the elastic washer (11) and the connecting cover (8) together is greater than the groove depth of the groove (10).

5. The bevel gear according to claim 1, characterized in that: The number of inserts (6) is four, and the four inserts (6) are distributed in a cross-shaped symmetrical arrangement with the central axis of the sleeve (4) as the center.

6. The bevel gear according to claim 1, characterized in that: The gear body (1) is made of alloy steel.

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