Spline mandrel convenient to lock

Abstract

The utility model discloses a spline mandrel convenient to lock, which comprises a body assembly, the body assembly comprises a main shaft rod, a locking ring, a connecting shaft, a threaded end and a shaft tail end, the locking ring is arranged on the surface of the main shaft rod, the connecting shaft is arranged on one side of the main shaft rod, the threaded end is arranged on the right side of the main shaft rod, and the shaft tail end is arranged on the right side of the main shaft rod. The shaft tail end is arranged on one side of the connecting shaft; the locking assembly comprises positioning shells, connecting rods and positioning pieces, the positioning shells are fixed to the front side and the rear side of the surface of the locking ring, the positioning pieces are arranged on the two sides of an inner cavity of the positioning shells, the locking assembly further comprises reinforcing blocks, and the reinforcing blocks are fixed to the two sides of the positioning shells. The main shaft rod has the advantages that the main shaft rod can be conveniently installed through the body assembly, the main shaft rod can be conveniently locked and positioned through the locking assembly, meanwhile, the positioning piece can be conveniently taken down from the positioning position of the main shaft rod, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of spline core shafts, in particular to a spline core shaft which is easy to lock. Background Art

[0002] A spline shaft is a shaft used to connect mechanical equipment. It has a unique cross-sectional shape, often exhibiting a petal-like pattern, hence the name "spline core." This type of shaft is primarily used in heavy-duty power transmission applications such as large-scale construction machinery, agricultural equipment, and industrial machinery. Its key characteristics are high strength and rigidity, enabling it to maintain excellent performance despite heavy loads and vibration.

[0003] At present, the size of the internal spline varies greatly, and finding a suitable core rod requires multiple replacement and debugging to meet production needs. However, the spline core rod has a certain taper, and there is a certain gap between the core rod and the internal spline of the gear shaft after installation. The core rod is prone to shaking, resulting in the occurrence of tooth disorder. Therefore, a locking mechanism is needed. However, the existing spline core shafts are usually not equipped with a locking structure, or only a simple locking method is set, which makes the locking operation not convenient enough. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the above problems and / or the problems existing in the existing spline core shaft that is easy to lock, the present utility model is proposed.

[0006] Therefore, the problem to be solved by the present invention is that the spline core shaft in the prior art is not convenient for locking.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a spline core shaft that is easy to lock, comprising

[0008] A body assembly, the body assembly comprising a main shaft, a locking ring, a connecting shaft, a threaded end, and a shaft tail end, wherein the locking ring is disposed on a surface of the main shaft, the connecting shaft is disposed on one side of the main shaft, the threaded end is disposed on the right side of the main shaft, and the shaft tail end is disposed on one side of the connecting shaft; and

[0009] The locking assembly includes a positioning shell, a connecting rod and a positioning piece. The positioning shell is fixed to the front and rear sides of the locking ring surface, and the positioning piece is arranged on both sides of the inner cavity of the positioning shell.

[0010] As a preferred solution of the spline core shaft that is easy to lock according to the utility model, the locking assembly further includes a reinforcement block, which is fixed to both sides of the positioning shell and one side of which is fixedly connected to the locking ring.

[0011] As a preferred solution of the spline core shaft that is easy to lock as described in the utility model, the locking assembly also includes a push ring, a snap ring and snap teeth, the push ring is fixed to one end of the connecting rod, and the snap ring is fixed to the end of the connecting rod away from the push ring.

[0012] As a preferred solution of the spline core shaft that is easy to lock as described in the utility model, the locking assembly also includes a limit plate and a retaining plate, the limit plate is fixed to the top and bottom of the inner cavity of the positioning shell, and the retaining plate is fixed to one side of the limit plate.

[0013] As a preferred solution of the spline core shaft that is easy to lock as described in the utility model, the locking assembly also includes a first spring and a pressure ring, the first spring is fixed to one side of the limit plate, and one side is fixedly connected to the pressure ring.

[0014] As a preferred solution of the spline core shaft that is easy to lock as described in the utility model, the locking assembly also includes a positioning rod and a movable plate, the positioning rod is fixed on one side of the pressure ring, and the other side passes through the interior of the retaining plate, and the movable plate is fixed on the top of the connecting rod.

[0015] As a preferred solution of the spline core shaft that is easy to lock as described in the utility model, the locking assembly also includes a slider and a slide groove, the slider is fixed to the top of the movable plate, and the slide groove is opened at the bottom and top of the inner cavity of the positioning shell.

[0016] As a preferred solution of the spline core shaft that is easy to lock as described in the utility model, the positioning member includes a tooth plate, a second spring, a block, a pull rod and a pull block, the tooth plate is fixed on both sides of the connecting rod, the second spring is fixed on both sides of the inside of the positioning shell, and the other side is fixedly connected to the block, the pull rod is fixed on one side of the block, and the other side passes through the outside of the positioning shell and is fixedly connected to the pull block.

[0017] As a preferred solution of the spline core shaft that is easy to lock according to the utility model, the positioning member further includes a limiting ring, which is sleeved on the surface of the pull rod, and one side of the limiting ring is fixedly connected to the positioning shell.

[0018] As a preferred solution of the spline core shaft that is easy to lock as described in the utility model, the main body component also includes a reinforcement plate, which is fixed to one side of the limit plate and one side is fixedly connected to the inner wall of the positioning shell.

[0019] The beneficial effects of the utility model are as follows: the main shaft rod is conveniently installed through the main body component, and the main shaft rod is conveniently locked and positioned through the locking component, and the positioning piece is also conveniently removed from the positioning position of the main shaft rod, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0021] Figure 1 The overall structure diagram of the spline core shaft for easy locking.

[0022] Figure 2 Another perspective diagram of the overall structure of the spline core shaft for easy locking.

[0023] Figure 3 Diagram of the main shaft structure with a splined core shaft for easy locking.

[0024] Figure 4 Diagram of the internal structure of the positioning shell of the spline core shaft for easy locking.

[0025] Figure 5 Diagram of the positioning piece structure of the splined core shaft for easy locking.

[0026] Numbers in the figure: 100, main body assembly; 101, main shaft rod; 102, locking ring; 103, connecting shaft; 104, threaded end; 105, shaft tail end; 200, locking assembly; 201, positioning shell; 202, connecting rod; 203, positioning piece; 204, reinforcement block; 205, push ring; 206, snap ring; 207, snap teeth; 208, limit plate; 209, retaining plate; 210, first spring; 211, pressure ring; 212, positioning rod; 213, movable plate; 214, slider; 215, slide groove; 216, reinforcement plate; 203a, tooth plate; 203b, second spring; 203c, snap block; 203d, pull rod; 203e, pull block; 203f, limit ring. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Example 1

[0031] Reference Figures 1 to 5 , which is the first embodiment of the present invention, provides a spline core shaft that is easy to lock. The spline core shaft that is easy to lock includes a body component 100 and a locking component 200. The body component 100 facilitates the installation of the main shaft rod 101, while the locking component 200 facilitates the locking and positioning of the main shaft rod 101. It is also convenient to remove the positioning member 203 from the positioning position of the main shaft rod 101, and the operation is convenient.

[0032] The main body component 100 includes a main shaft rod 101, a locking ring 102, a connecting shaft 103, a threaded end 104 and a shaft tail end 105. The locking ring 102 is arranged on the surface of the main shaft rod 101, the connecting shaft 103 is arranged on one side of the main shaft rod 101, the threaded end 104 is arranged on the right side of the main shaft rod 101, and the shaft tail end 105 is arranged on one side of the connecting shaft 103.

[0033] The main shaft rod 101 cooperates with the locking ring 102 to facilitate the installation of the connecting shaft 103, and the threaded end 104 and the shaft tail end 105 facilitate other connection and installation work.

[0034] The locking assembly 200 includes a positioning shell 201 , a connecting rod 202 and a positioning member 203 . The positioning shell 201 is fixed to the front and rear sides of the surface of the locking ring 102 , and the positioning member 203 is arranged on both sides of the inner cavity of the positioning shell 201 .

[0035] The positioning shell 201 facilitates the installation of the positioning member 203 , and the connecting rod 202 facilitates the positioning of the auxiliary positioning member 203 .

[0036] Example 2

[0037] Reference Figure 3 、 Figure 4 and Figure 5, which is the second embodiment of the present utility model, and this embodiment is based on the previous embodiment.

[0038] Specifically, the locking assembly 200 further includes a reinforcement block 204 . The reinforcement block 204 is fixed to both sides of the positioning shell 201 , and one side of the reinforcement block 204 is fixedly connected to the locking ring 102 .

[0039] The fixed connection between the reinforcement block 204 and the locking ring 102 can improve the connection strength between the positioning shell 201 and the locking ring 102 .

[0040] Specifically, the locking assembly 200 further includes a push ring 205 , a snap ring 206 and a snap tooth 207 . The push ring 205 is fixed to one end of the connecting rod 202 , and the snap ring 206 is fixed to the end of the connecting rod 202 away from the push ring 205 .

[0041] The push ring 205 facilitates the user to push the connecting rod 202 , and the snap ring 206 cooperates with the snap teeth 207 to facilitate the positioning of the main shaft 101 .

[0042] Specifically, the locking assembly 200 further includes a limiting plate 208 and a retaining plate 209 . The limiting plate 208 is fixed to the top and bottom of the inner cavity of the positioning shell 201 , and the retaining plate 209 is fixed to one side of the limiting plate 208 .

[0043] The limiting plate 208 facilitates the movement of the limiting connecting rod 202, and the retaining plate 209 facilitates the reset of the auxiliary connecting rod 202.

[0044] Specifically, the locking assembly 200 further includes a first spring 210 and a pressing ring 211 . The first spring 210 is fixed to one side of the limiting plate 208 , and one side is fixedly connected to the pressing ring 211 .

[0045] The fixed connection between the first spring 210 and the pressing ring 211 facilitates the auxiliary reset of the connecting rod 202 .

[0046] Specifically, the locking assembly 200 further includes a positioning rod 212 and a movable plate 213 . The positioning rod 212 is fixed to one side of the pressure ring 211 , and the other side passes through the interior of the retaining plate 209 . The movable plate 213 is fixed to the top of the connecting rod 202 .

[0047] The positioning rod 212 can improve the stability of the pressing ring 211 during movement. The fixed connection between the movable plate 213 and the connecting rod 202 can cooperate with the pressing ring 211 and the first spring 210 to assist in resetting the connecting rod 202.

[0048] Specifically, the locking assembly 200 further includes a slider 214 and a slide groove 215 . The slider 214 is fixed to the top of the movable plate 213 , and the slide groove 215 is opened at the bottom and top of the inner cavity of the positioning shell 201 .

[0049] The sliding connection between the slider 214 and the slide groove 215 can improve the stability of the movable plate 213 during movement.

[0050] Example 3

[0051] Reference Figure 4 and Figure 5 , which is the third embodiment of the present utility model, and is based on the first two embodiments.

[0052] Specifically, the positioning member 203 includes a tooth plate 203a, a second spring 203b, a block 203c, a pull rod 203d and a pull block 203e. The tooth plate 203a is fixed on both sides of the connecting rod 202, the second spring 203b is fixed on both sides of the inside of the positioning shell 201, and the other side is fixedly connected to the block 203c, the pull rod 203d is fixed on one side of the block 203c, and the other side passes through to the outside of the positioning shell 201 and is fixedly connected to the pull block 203e.

[0053] When the user needs to lock the main shaft rod 101, the user can push the connecting rod 202 to one side, and the connecting rod 202 will drive.

[0054] Specifically, the positioning member 203 further includes a limiting ring 203 f . The limiting ring 203 f is sleeved on the surface of the pull rod 203 d . One side of the limiting ring 203 f is fixedly connected to the positioning shell 201 .

[0055] The fixed connection between the limiting ring 203f and the positioning housing 201 can improve the stability of the pull rod 203d when moving.

[0056] Specifically, the main body assembly 100 further includes a reinforcing plate 216 . The reinforcing plate 216 is fixed to one side of the limiting plate 208 , and one side of the reinforcing plate 216 is fixedly connected to the inner wall of the positioning shell 201 .

[0057] The connection strength of the limiting plate 208 can be improved by fixedly connecting the reinforcing plate 216 to the inner wall of the positioning shell 201 .

[0058] When in use, when the user needs to lock the main shaft rod 101, the user can push the two connecting rods 202 to move relative to each other. At this time, the connecting rod 202 will drive the tooth plate 203a to move to one side to engage with the surface of the clamping block 203c. At this time, the clamping block 203c will squeeze the second spring 203b, and the pull rod 203d will also move outward. However, as the connecting rod 202 moves, the movable plate 213 will also be driven to squeeze the pressure ring 211 and the first spring 210 until the clamping ring 206 on one side of the connecting rod 202 is engaged. After the locking tooth 207 is connected to the main shaft 101 to complete the locking work, the second spring 203b will drive the block 203c to reset and connect to the surface of the tooth plate 203a. If the lock needs to be released, the pull rod 203d can be pulled. At this time, the block 203c will squeeze the second spring 203b to separate from the surface of the tooth plate 203a. Then the first spring 210 will also drive the pressure ring 211 to assist in the elastic movement of the movable plate 213 to separate the locking tooth 207 from the surface of the main shaft 101, thereby completing the quick disassembly effect.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A splined mandrel that is easy to lock, characterized by: include, A body assembly (100), the body assembly (100) comprising a main shaft (101), a locking ring (102), a connecting shaft (103), a threaded end (104) and a shaft tail end (105), wherein the locking ring (102) is arranged on a surface of the main shaft (101), the connecting shaft (103) is arranged on one side of the main shaft (101), the threaded end (104) is arranged on the right side of the main shaft (101), and the shaft tail end (105) is arranged on one side of the connecting shaft (103); and A locking assembly (200) comprising a positioning shell (201), a connecting rod (202) and a positioning member (203); the positioning shell (201) is fixed to the front and rear sides of the surface of the locking ring (102); and the positioning member (203) is arranged on both sides of the inner cavity of the positioning shell (201).

2. The spline core shaft for easy locking according to claim 1, characterized in that: The locking assembly (200) further comprises a reinforcing block (204), wherein the reinforcing block (204) is fixed to both sides of the positioning shell (201), and one side of the reinforcing block (204) is fixedly connected to the locking ring (102).

3. The spline core shaft for easy locking according to claim 2, characterized in that: The locking assembly (200) further comprises a push ring (205), a snap ring (206) and a snap tooth (207), wherein the push ring (205) is fixed to one end of the connecting rod (202), and the snap ring (206) is fixed to one end of the connecting rod (202) away from the push ring (205).

4. The spline core shaft for easy locking according to claim 3, characterized in that: The locking assembly (200) further comprises a limiting plate (208) and a retaining plate (209), wherein the limiting plate (208) is fixed to the top and bottom of the inner cavity of the positioning shell (201), and the retaining plate (209) is fixed to one side of the limiting plate (208).

5. The spline core shaft for easy locking according to claim 4, characterized in that: The locking assembly (200) further comprises a first spring (210) and a pressure ring (211), wherein the first spring (210) is fixed to one side of the limiting plate (208), and one side is fixedly connected to the pressure ring (211).

6. The spline core shaft for easy locking according to claim 5, characterized in that: The locking assembly (200) further includes a positioning rod (212) and a movable plate (213), wherein the positioning rod (212) is fixed to one side of the pressure ring (211), and the other side passes through the interior of the retaining plate (209), and the movable plate (213) is fixed to the top of the connecting rod (202).

7. The spline core shaft for easy locking according to claim 6, characterized in that: The locking assembly (200) further comprises a slider (214) and a slide groove (215), wherein the slider (214) is fixed to the top of the movable plate (213), and the slide groove (215) is opened at the bottom and top of the inner cavity of the positioning shell (201).

8. The splined mandrel for easy locking according to claim 1, characterized in that: The positioning member (203) includes a tooth plate (203a), a second spring (203b), a block (203c), a pull rod (203d) and a pull block (203e), wherein the tooth plate (203a) is fixed to both sides of the connecting rod (202), the second spring (203b) is fixed to both sides inside the positioning shell (201), and the other side is fixedly connected to the block (203c), and the pull rod (203d) is fixed to one side of the block (203c), and the other side passes through the outside of the positioning shell (201) and is fixedly connected to the pull block (203e).

9. The spline core shaft for easy locking according to claim 8, characterized in that: The positioning member (203) further includes a limiting ring (203f), which is sleeved on the surface of the pull rod (203d), and one side of the limiting ring (203f) is fixedly connected to the positioning shell (201).

10. The spline core shaft for easy locking according to claim 4, characterized in that: The main body assembly (100) further includes a reinforcing plate (216), wherein the reinforcing plate (216) is fixed to one side of the limiting plate (208), and one side of the reinforcing plate (216) is fixedly connected to the inner wall of the positioning shell (201).

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