Wear-resistant adjustable transmission shaft

Abstract

The utility model discloses a kind of wear-resistant adjustable transmission shafts, belong to transmission shaft technical field, solve the gear of the outer ring of transmission shaft if appear damage condition, then it needs to replace entire transmission shaft, if entire transmission shaft is replaced to make its replacement cost higher problem. Including shaft body and the gear ring of being sleeved in the outer side of shaft body, the end face of the shaft body is equipped with the connecting through-hole passing through both ends thereof. When the utility model replaces gear ring, hexagonal tool is reversely rotated screw head, makes first connecting rod and second connecting rod exit, knock gear ring both ends bevel, make limit post enter bevel inner groove, replace gear ring after release restriction. After installing new gear ring, rotate shaft body, utilize centrifugal force to make limit post re-enter bevel through-hole and bevel outer groove, pass through tool rotation screw head, make connecting rod and limit post contact and guide, ensure that limit post is completely entered bevel outer groove, convex ball is embedded into pit, prevent connecting rod from loosening when shaft body rotates.

Description

Technical Field

[0001] This utility model relates to the field of transmission shaft technology, and in particular to a wear-resistant adjustable transmission shaft. Background Technology

[0002] The driveshaft is a key component in a mechanical transmission system, used to transmit power from an engine or motor to drive wheels or other mechanical devices. It is typically made of high-strength steel, offering excellent torsional resistance and durability. The balance of the driveshaft is crucial; an unbalanced driveshaft can cause vibration and noise, affecting equipment performance and lifespan.

[0003] However, if the gear on the outer ring of the drive shaft is damaged, the entire drive shaft needs to be replaced, which results in a high replacement cost.

[0004] Therefore, a wear-resistant adjustable drive shaft is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a wear-resistant adjustable transmission shaft.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A wear-resistant adjustable transmission shaft includes a shaft body and a gear ring sleeved on the outside of the shaft body. The end face of the shaft body has a connecting through hole penetrating both ends. A first connecting rod and a second connecting rod are detachably connected in the connecting through hole. The outer sides of the first connecting rod and the second connecting rod are respectively provided with a plurality of inclined inner grooves arranged at opposite angles. The outer ring of the shaft body has a plurality of inclined through holes that can communicate with the inclined inner grooves. The inner ring of the gear ring has an inclined outer groove that communicates with the inclined through holes. The inclined through holes and the inclined outer grooves are embedded with displaceable limiting posts. When the inclined inner grooves and the inclined through holes are misaligned, the limiting posts are located in the inclined outer grooves and the inclined through holes. When the inclined inner grooves and the inclined through holes are coaxially connected, the limiting posts are located in the inclined inner grooves and the inclined through holes.

[0008] Preferably, the inner ring of the connecting through hole has internal threads with opposite directions at both ends, and the outer rings of the first connecting rod and the second connecting rod have external threads. The first connecting rod and the second connecting rod are threadedly connected in the connecting through hole through the internal and external threads.

[0009] Preferably, a plurality of protruding balls are fixedly connected to the end of the first connecting rod facing the second connecting rod, and a plurality of recesses are formed on the end of the second connecting rod facing the first connecting rod. When the first connecting rod and the second connecting rod abut against each other, the protruding balls are embedded in the recesses.

[0010] Preferably, the two ends of the shaft are provided with recessed grooves that are coaxial with and connected to the connecting through holes, and the ends of the first connecting rod and the second connecting rod that are far apart from each other are fixedly connected with screw heads that can be submerged in the recessed grooves.

[0011] Preferably, the thickness of the screw head is less than the depth of the groove, and when the screw head is flush with the end face of the shaft, the oblique through hole and the oblique inner groove are coaxially connected.

[0012] Preferably, the screw head is an internal hexagonal screw head.

[0013] Preferably, both ends of the outer ring of the toothed ring are provided with striking bevels, and the striking bevels on both sides are respectively arranged parallel to the end of the limiting post away from the connecting through groove.

[0014] This utility model has the following beneficial effects:

[0015] When replacing the gear ring, use an Allen wrench to reverse the screw head to disengage the first and second connecting rods. Tap the beveled surfaces at both ends of the gear ring to allow the limiting post to enter the inclined inner groove. After releasing the restriction, replace the gear ring. After installing the new gear ring, rotate the shaft to use centrifugal force to allow the limiting post to re-enter the inclined through hole and inclined outer groove. Rotate the screw head with a tool to make the connecting rod contact and guide the limiting post, ensuring that the limiting post is fully inserted into the inclined outer groove. The convex ball is embedded in the recess to prevent the connecting rod from loosening when the shaft rotates. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0021] In the diagram: 1. Shaft; 2. Gear ring; 3. Connecting through hole; 4. First connecting rod; 5. Second connecting rod; 6. Convex ball; 7. Recess; 8. Inclined inner groove; 9. Inclined through hole; 10. Inclined outer groove; 11. Limiting post; 12. Countersunk groove; 13. Screw head. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to 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.

[0026] Furthermore, the terms "first," "second," and "third" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 based on the specific circumstances.

[0028] A wear-resistant adjustable drive shaft, such as Figures 1 to 4 As shown, the device includes a shaft body 1 and a gear ring 2 sleeved on the outside of the shaft body 1. The end face of the shaft body 1 has a connecting through hole 3 that passes through both ends of the shaft body 1. A first connecting rod 4 and a second connecting rod 5 are detachably connected in the connecting through hole 3. The outer sides of the first connecting rod 4 and the second connecting rod 5 are respectively provided with a plurality of inclined inner grooves 8 that are inclined and facing opposite directions. The outer ring of the shaft body 1 has a plurality of inclined through holes 9 that can communicate with the inclined inner grooves 8. The inner ring of the gear ring 2 has an inclined outer groove 10 that communicates with the inclined through holes 9. The inclined through holes 9 and the inclined outer groove 10 are embedded with movable limiting posts 11. When the inclined inner groove 8 and the inclined through hole 9 are misaligned, the limiting post 11 is located in the inclined outer groove 10 and the inclined through hole 9. When the inclined inner groove 8 and the inclined through hole 9 are coaxially connected, the limiting post 11 is located in the inclined inner groove 8 and the inclined through hole 9. The outer rings at both ends of the gear ring 2 are provided with striking inclined surfaces. The striking inclined surfaces on both sides are respectively arranged parallel to the end of the limiting post 11 away from the connecting through groove.

[0029] The inner ring of the connecting through hole 3 has internal threads with opposite directions at both ends. The outer rings of the first connecting rod 4 and the second connecting rod 5 have external threads. The first connecting rod 4 and the second connecting rod 5 are connected in the connecting through hole 3 by the internal and external threads. A number of convex balls 6 are fixedly connected to the end of the first connecting rod 4 facing the second connecting rod 5. A number of recesses 7 are opened at the end of the second connecting rod 5 facing the first connecting rod 4. When the first connecting rod 4 and the second connecting rod 5 abut against each other, the convex balls 6 are embedded in the recesses 7.

[0030] The two ends of the shaft 1 are provided with recessed grooves 12 that are coaxial and connected to the connecting through hole 3. The ends of the first connecting rod 4 and the second connecting rod 5 that are far apart from each other are fixedly connected with screw heads 13 that can be submerged in the recessed grooves 12. The thickness of the screw head 13 is less than the groove depth of the recessed groove 12. When the screw head 13 is flush with the end face of the shaft 1, the oblique through hole 9 and the oblique inner groove 8 are coaxially connected. The screw head 13 is an internal hexagon screw head.

[0031] When the teeth on the gear ring 2 in this utility model are damaged and need to be replaced, the operator only needs to insert an Allen wrench into the screw head 13, which will then drive the screw head 13, the first connecting rod 4, and the second connecting rod 5 to rotate in opposite directions through the internal and external threads. This will allow the first connecting rod 4 and the second connecting rod 5 to exit from the connecting through hole 3 until the inclined inner groove 8 can be coaxially connected with the inclined through hole 9. Then, the operator can manually hold a rubber hammer to tap the tapping slopes of the outer rings at both ends of the gear ring 2, so that both ends of the outer rings of the gear ring 2 are tapped. Under the transmission of vibration, the limiting post 11 can be inserted from the inclined outer groove 10 into the inclined through hole 9, and then completely into the inclined inner groove 8. At this time, no part of the limiting post 11 is located in the inclined outer groove 10, so the limiting post 11 will no longer restrict the exit of the gear ring 2. At this time, the operator can replace the gear ring 2.

[0032] After replacing the gear ring 2, the gear ring 2 is re-fitted onto the outer ring of the shaft 1, and then the shaft 1 is rotated. Under the centrifugal force of the shaft 1 during rotation, the limiting post 11 can re-enter the oblique through hole 9 and the oblique outer groove 10. Then, guided by the lower oblique surface of the limiting post 11, the operator rotates the screw head 13 with a tool, so that the first connecting rod 4 and the second connecting rod 5 re-engage with each other through the internal and external threads. During this process, the first connecting rod 4 and the second connecting rod 5 contact and guide the lower oblique surface of the limiting post 11, so that the limiting post 11 is fully inserted into the oblique outer groove 10. Then the convex ball 6 is embedded in the recess 7, thereby preventing the first connecting rod 4 and the second connecting rod 5 from easily rotating during the rotation of the shaft 1.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wear-resistant adjustable transmission shaft, characterized in that, Includes a shaft (1) and a gear ring (2) sleeved on the outside of the shaft (1). The end face of the shaft (1) is provided with a connecting through hole (3) that passes through both ends of the shaft. A first connecting rod (4) and a second connecting rod (5) are detachably connected in the connecting through hole (3). The outer sides of the first connecting rod (4) and the second connecting rod (5) are respectively provided with a plurality of inclined inner grooves (8) that are set at an angle and face opposite directions. The outer ring of the shaft (1) is provided with a plurality of inclined through holes that can communicate with the inclined inner grooves (8). 9) The inner ring of the gear ring (2) is provided with an oblique outer groove (10) that communicates with the oblique through hole (9). The oblique through hole (9) and the oblique outer groove (10) are embedded with a movable limiting post (11). When the oblique inner groove (8) and the oblique through hole (9) are misaligned, the limiting post (11) is located in the oblique outer groove (10) and the oblique through hole (9). When the oblique inner groove (8) and the oblique through hole (9) are coaxially connected, the limiting post (11) is located in the oblique inner groove (8) and the oblique through hole (9).

2. The wear-resistant adjustable transmission shaft according to claim 1, characterized in that, The inner ring of the connecting through hole (3) is provided with internal threads with opposite directions at both ends. The outer rings of the first connecting rod (4) and the second connecting rod (5) are provided with external threads. The first connecting rod (4) and the second connecting rod (5) are connected in the connecting through hole (3) by internal and external threads.

3. The wear-resistant adjustable transmission shaft according to claim 2, characterized in that, The first connecting rod (4) has a plurality of protruding balls (6) fixedly connected to one end facing the second connecting rod (5), and the second connecting rod (5) has a plurality of recesses (7) opened at one end facing the first connecting rod (4). When the first connecting rod (4) and the second connecting rod (5) abut against each other, the protruding balls (6) are embedded in the recesses (7).

4. The wear-resistant adjustable transmission shaft according to claim 3, characterized in that, The shaft (1) has grooves (12) that are coaxial with and connected to the connecting through hole (3) at both ends. The first connecting rod (4) and the second connecting rod (5) are fixedly connected to a screw head (13) that can be submerged in the groove (12) at their ends.

5. The wear-resistant adjustable transmission shaft according to claim 4, characterized in that, The thickness of the screw head (13) is less than the groove depth of the countersink (12). When the screw head (13) is flush with the end face of the shaft (1), the oblique through hole (9) and the oblique inner groove (8) are coaxially connected.

6. The wear-resistant adjustable transmission shaft according to claim 4, characterized in that, The screw head (13) is an internal hexagon screw head.

7. The wear-resistant adjustable transmission shaft according to claim 1, characterized in that, Both ends of the toothed ring (2) are provided with striking bevels, and the striking bevels on both sides are respectively set parallel to the end of the limiting post (11) away from the connecting through groove.

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