Novel gear shaft

Abstract

The utility model provides a novel gear shaft, belongs to the technical field of gear shafts, and solves the problems that an existing assembled gear shaft is complex in connecting structure and difficult to disassemble and assemble when rusted. A connecting shaft is arranged at one end of the shaft body, a boss is arranged at the other end of the shaft body, a step is arranged between the boss and the shaft body, a sliding groove is formed in the step, a fixing shell is installed in the sliding groove in a sliding mode, a sliding block corresponding to the sliding groove is arranged on the fixing shell, a gear piece is installed on the outer side of the outer wall of the fixing shell, a locking cover is installed at the top end of the fixing shell, and the fixing shell is provided with a buckle. The locking cover is provided with a bayonet, the boss is provided with a protruding block, the protruding block is provided with an installation groove, a sliding clamping block is installed in the installation groove, the gear piece is provided with a contact block, and the bayonet is fixed to the contact block. The gear shaft has the advantages that the shaft body, the gear piece, the fixing shell, the spring, the clamping block and the locking cover are mutually limited, so that clamping connection between the gear piece and the shaft body is achieved, and a user can disassemble and assemble the gear piece conveniently; and the gear sheet and the fixed shell can be disassembled and replaced by disassembling the locking cover.

Description

Technical Field

[0001] This utility model belongs to the field of gear shafts, and relates to a gear shaft, and more particularly to a novel gear shaft. Background Technology

[0002] A gear shaft is a mechanical part that supports rotating parts and rotates with them to transmit motion, torque, or bending moment. It is generally a round metal rod, and different sections can have different diameters. Rotating parts in a machine are mounted on shafts. Based on the shape of the shaft axis, shafts can be divided into crankshafts and straight shafts. Based on the load-bearing capacity, shafts can also be divided into rotating shafts, spindles, and transmission shafts.

[0003] When installing gear shafts and gears, wedges are used to fix the gears to the gear shafts. However, disassembly requires knocking the gears, which can easily damage them. Some manufacturers use bolt-type fixing mechanisms to connect gears and gear shafts, but this mechanism is too complicated to connect and may rust after long-term use, making it difficult to disassemble the gears and gear shafts.

[0004] For example, a novel gear shaft with application number 202020622699.6 includes a main shaft, a connecting shaft fixedly connected to the top of the main shaft, a gear plate sleeved at the bottom of the main shaft, a locking groove opened at the bottom of the main shaft, locking blocks opened on both sides of the gear plate, the inner wall of the gear plate contacting the main shaft, a fastening groove opened at the bottom of the locking blocks, a bottom rod provided at the bottom of the main shaft, pin blocks provided on both sides of the top of the bottom rod, and insert sleeves fixedly connected to both sides of the bottom of the bottom rod.

[0005] The aforementioned patent uses a bolt-type fixing mechanism, which allows users to disassemble gears simply by turning a wrench. However, this mechanism is too complex, and corrosion can affect the disassembly and assembly of gears and shafts. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a new type of gear shaft with a simplified connection structure that facilitates worker assembly and disassembly.

[0007] This utility model can be achieved through the following technical solution: a novel gear shaft, including a shaft body, a connecting shaft at one end of the shaft body, a boss at the other end of the shaft body, a step between the boss and the shaft body, a sliding groove on the step, a fixed shell slidably mounted on the sliding groove, a slider corresponding to the shape of the sliding groove on the fixed shell, a gear plate mounted on the outer side of the outer wall of the fixed shell, a locking cover mounted on the top of the fixed shell, a buckle on the fixed shell, and a latch on the locking cover.

[0008] In the aforementioned novel gear shaft, a protrusion is provided on the boss, an installation groove is provided on the protrusion, a sliding block is installed in the installation groove, and a return spring is installed between the sliding block and the installation groove.

[0009] In the aforementioned novel gear shaft, a limiting groove is provided at the bottom of the slide groove, and a limiting block is provided on the slider.

[0010] In the aforementioned novel gear shaft, a notch is provided on the fixed housing, and corresponding contact blocks are provided on the gear plate.

[0011] In the aforementioned novel gear shaft, a through hole is provided on the notch, the protrusion passes through the through hole, and a slot corresponding to the sliding block is provided on the contact block.

[0012] In the aforementioned novel gear shaft, a reinforcing block is provided on the lower end face of the contact block, and the reinforcing block is inserted into the sliding groove.

[0013] In the aforementioned novel gear shaft, the fixed housing has an clearance groove, the boss has a through groove that passes through the mounting groove, and the locking cover extends with a push rod.

[0014] In the aforementioned novel gear shaft, the push rod has a chamfer, and the sliding block has an inclined surface.

[0015] In the aforementioned novel gear shaft, the gear plate has a groove, and the locking cover has a limiting part.

[0016] Compared with the prior art, the advantages of this utility model are as follows: the mutual limiting between the shaft, gear plate, fixed shell, spring, locking block and locking cover realizes the locking between the gear plate and the shaft; at the same time, after the locking cover is removed, the gear plate and fixed shell can be disassembled and replaced, and it is also convenient to replace the sliding locking block and spring installed in the mounting groove. Attached Figure Description

[0017] Figure 1 This is a 3D view of the new type of gear shaft;

[0018] Figure 2 This is an exploded view of the new type of gear shaft;

[0019] Figure 3 This is a sectional view of the new type of gear shaft;

[0020] Figure 4 This is a 3D view of the locking cover for the new type of gear shaft;

[0021] Among them, 1. Shaft body; 11. Connecting shaft; 2. Boss; 21. Protrusion; 211. Mounting groove; 212. Return spring; 22. Through groove; 3. Step; 31. Slide groove; 311. Limiting groove; 4. Fixing shell; 41. Slider; 411. Limiting block; 42. Buckle; 43. Notch; 431. Through hole; 44. Clearance groove; 5. Gear plate; 51. Contact block; 511. Slot; 512. Reinforcing block; 52. Groove; 6. Locking cover; 61. Bay; 62. Push rod; 621. Chamfer; 63. Limiting part; 7. Sliding block; 71. Inclined surface. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] like Figures 1 to 4 As shown, this utility model can be implemented through the following embodiments: A novel gear shaft includes a shaft body 1, a connecting shaft 11 is provided at one end of the shaft body 1, a boss 2 is provided at the other end of the shaft body 1, a step 3 is provided between the boss 2 and the shaft body 1, a sliding groove 31 is provided on the step 3, a fixed shell 4 is slidably installed on the sliding groove 31, a slider 41 corresponding to the shape of the sliding groove 31 is provided on the fixed shell 4, a gear piece 5 is installed on the outer side of the outer wall of the fixed shell 4, a locking cover 6 is installed on the top of the fixed shell 4, a buckle 42 is provided on the fixed shell 4, and a latch 61 is provided on the locking cover 6.

[0024] The fixed housing 4 and the shaft 1 are slidably connected by the sliding groove 31 and the slider 41. The fixed housing 4 is semi-circular, which makes it easy for the user to disassemble and assemble the fixed housing 4. The buckle 42 on the fixed housing 4 is designed to cooperate with the latch 61 on the locking cover 6 to limit the position of the gear piece 5. The installation of the gear piece 5 can limit the position of the fixed housing 4, prevent the fixed housing 4 from detaching from the shaft 1 on its own, and simplify the structure.

[0025] like Figure 2 and Figure 3 As shown, a protrusion 21 is provided on the boss 2, and a mounting groove 211 is formed on the protrusion 21. A sliding block 7 is installed in the mounting groove 211, and a return spring 212 is installed between the sliding block 7 and the mounting groove 211. The sliding block 7 slides in the mounting groove 211 to limit the gear and prevent the gear from disengaging from the shaft 1; the return spring 212 is used to reset the sliding block 7 after the gear disengages from the shaft 1.

[0026] like Figure 2As shown, a limiting groove 311 is provided at the bottom of the slide 31, and a limiting block 411 is provided on the slider 41. The limiting groove 311 and the limiting block 411 cooperate to restrict the up and down movement of the fixed shell 4, preventing the fixed shell 4 from moving up and down on the shaft 1 during the rotation of the gear shaft.

[0027] like Figure 2 and Figure 3 As shown, a notch 43 is provided on the fixed housing 4, and a corresponding contact block 51 is provided on the gear plate 5. The contact block 51 of the gear plate 5 mates with the notch 43 of the fixed housing 4, increasing the contact area between the gear plate 5 and the fixed housing 4, and facilitating the transmission of torque from the shaft 1 to the gear plate 5.

[0028] like Figure 2 and Figure 3 As shown, a through hole 431 is provided on the notch 43, and the protrusion 21 passes through the through hole 431. A slot 511 corresponding to the sliding block 7 is provided on the contact block 51. The protrusion 21 passes through the through hole 431, so that the sliding block 7 and the contact block 51 are mated. The slot 511 on the contact block 51 corresponds to the sliding block 7. The sliding block 7 and the slot 511 cooperate to realize the connection between the shaft 1 and the gear piece 5; at the same time, the through groove 22 cooperates with the protrusion 21 to restrict the displacement of the fixed shell 4.

[0029] like Figure 2 As shown, a reinforcing block 512 is provided on the lower end face of the contact block 51, and the reinforcing block 512 is inserted into the slide groove 31. The reinforcing block 512 is used to increase the connection area between the gear plate 5 and the shaft 1, so as to facilitate the torque transmission at the shaft 1 to the gear plate 5. The reinforcing block 512 is inserted into the slide groove 31 to block the channel of the fixed shell 4 sliding out of the shaft 1 and prevent the fixed shell 4 from detaching from the shaft 1.

[0030] like Figures 2 to 4 As shown, the fixed shell 4 has a relief groove 44, and the boss 2 has a through groove 22, which passes through the mounting groove 211. The locking cover extends with a pushing rod 62. The pushing rod 62 is used to enter the through groove 22 and push the sliding block 7, so that the sliding block 7 is engaged in the slot 511, thereby limiting the position between the gear piece 5 and the shaft 1. The relief groove 44 is used to avoid the pushing rod 62, so that the pushing rod 62 can be inserted into the through groove 22.

[0031] like Figure 3 and Figure 4 As shown, a chamfer 621 is provided on the push rod 62, and an inclined surface 71 is provided on the sliding block 7. The chamfer 621 and the inclined surface 71 cooperate to allow the sliding block 7 to slide outward on the contact surface with the push rod 62 when the push rod 62 is inserted into the through groove 22, thereby allowing the sliding block 7 to be engaged in the slot 511.

[0032] like Figure 2 and Figure 4As shown, the gear 5 has a groove 52, and the locking cover 6 has a limiting part 63. The groove 52 and the limiting part 63 cooperate to limit the axial movement of the gear 5 on the shaft 1 by means of the sliding block 7 and the slot 511, the buckle 42 and the latch 61, and prevent the gear 5 from detaching from the shaft 1.

[0033] The working principle of this utility model is as follows: Insert the sliding block 7 into the mounting groove 211 of the protrusion 21 and fit the spring. Then, connect the slider 41 on the fixed shell 4 and the sliding groove 31 of the shaft 1 to install the fixed shell 4. Next, fit the gear piece 5. Finally, place the locking cover 6 on top of the fixed shell 4. Insert the pushing rod 62 of the locking cover 6 into the through groove 22, thereby pushing the sliding block 7 into the slot 511 to achieve a fixed connection between the gear piece 5 and the shaft 1. Finally, connect the latch 61 on the locking cover 6 with the buckle 42 on the fixed shell 4 to complete the assembly. When disassembling, release the connection between the buckle 42 and the latch 61, and reverse the above assembly sequence to disassemble the gear shaft.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0035] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A novel gear shaft, comprising a shaft body (1), wherein a connecting shaft (11) is provided at one end of the shaft body (1), characterized in that: A boss (2) is provided at the other end of the shaft (1). A step (3) is provided between the boss (2) and the shaft (1). A groove (31) is provided on the step (3). A fixed shell (4) is slidably installed on the groove (31). A slider (41) corresponding to the shape of the groove (31) is provided on the fixed shell (4). A gear plate (5) is installed on the outer side of the outer wall of the fixed shell (4). A locking cover (6) is installed on the top of the fixed shell (4). A buckle (42) is provided on the fixed shell (4). A bayonet (61) is provided on the locking cover (6).

2. The novel gear shaft according to claim 1, characterized in that, The boss (2) is provided with a protrusion (21), and the protrusion (21) is provided with an installation groove (211). A sliding block (7) is installed in the installation groove (211), and a return spring (212) is installed between the sliding block (7) and the installation groove (211).

3. The novel gear shaft according to claim 1, characterized in that, The bottom of the slide (31) is provided with a limiting groove (311), and the slider (41) is provided with a limiting block (411).

4. A novel gear shaft according to claim 1, characterized in that, The fixed shell (4) has a notch (43), and the gear plate (5) has a corresponding contact block (51).

5. A novel gear shaft according to claim 4, characterized in that, A through hole (431) is provided on the notch (43), the protrusion (21) passes through the through hole (431), and a slot (511) corresponding to the sliding block (7) is provided on the contact block (51).

6. A novel gear shaft according to claim 4, characterized in that, The lower end face of the contact block (51) is provided with a reinforcing block (512), which is inserted into the slide groove (31).

7. A novel gear shaft according to claim 1, characterized in that, The fixed shell (4) has a relief groove (44), the boss (2) has a through groove (22), the through groove (22) passes through the mounting groove (211), and the locking cover extends with a push rod (62).

8. A novel gear shaft according to claim 7, characterized in that, The push rod (62) has a chamfer (621), and the sliding block (7) has an inclined surface (71).

9. A novel gear shaft according to claim 1, characterized in that, The gear plate (5) has a groove (52), and the locking cover (6) has a limiting part (63).

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