Gear shaft

Abstract

The utility model relates to the technical field of gear shafts, in particular to a gear shaft which comprises a shaft rod, a prism arranged at the top of the shaft rod, a limiting table arranged in the middle of the shaft rod, an outer sleeve gear arranged on the limiting table in a sleeved mode, a connecting column arranged at the bottom of the shaft rod, a clamping groove communicated with a through groove formed in the bottom of the outer sleeve gear, and a counter bore formed in the position, close to the through groove, of the upper surface of the outer sleeve gear. A through hole is formed in the bottom of the counter bore, a fixing bolt is arranged in the counter bore, and a threaded hole is formed in the limiting table and corresponds to the fixing bolt. According to the gear shaft, the shaft rod with the limiting table is arranged, the outer sleeve gear with the clamping groove can be clamped and matched conveniently, the limiting table is tightly attached to the outer sleeve gear, the overall attractiveness is improved, the fixing bolt is installed in the counter bore, the bottom of the fixing bolt penetrates through the penetrating hole and is in threaded connection with the threaded hole in the limiting table, and the fixing bolt is detached; the outer sleeve gear is convenient to disassemble and replace, outer sleeve gears with different latch sizes are replaced, meshing fit with gears with different sizes is achieved, and the influence of overall replacement and cost consumption increase is reduced.

Description

Technical Field

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

[0002] A gear shaft is a component used to support rotating parts and rotate with them to transmit motion, torque, or bending moment. Gear shafts are divided into input gear shafts and output gear shafts.

[0003] The utility model disclosed in CN221628627U is a gear shaft, including a gear with an external gear ring on its outer circumferential side; and a shaft body, wherein the gear and the shaft body are integrally formed, and the shaft body has a hollow structure inside; a step is provided at the end of the shaft body away from the gear, and positioning keys are evenly provided along the outer circumferential side of the step, with key side grooves formed between the two sides of each positioning key and the shaft body; and an internal gear ring is provided in the hollow structure of the shaft body, with the internal gear ring located on the side close to the positioning key.

[0004] The above technical solution can not only improve the connection stability and reliability of the gear shaft, but also facilitate manufacturing and improve the overall machining accuracy of the gear shaft. However, when the gear shaft meshes with gears of different sizes, it is necessary to replace the gear shaft of different sizes. Replacing the entire shaft wastes materials and has high replacement costs. It cannot reduce the number of shaft replacements. Replacing the outer gear ring can reduce the replacement cost. Utility Model Content

[0005] The purpose of this invention is to provide a gear shaft to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A gear shaft includes a shaft rod with a prism at the top and a limiting platform at the middle. An outer gear is fitted onto the limiting platform. A connecting post is provided at the bottom of the shaft rod. A through groove is formed at the middle of the top of the outer gear. A retaining groove communicating with the through groove is formed at the bottom of the outer gear. A countersunk hole is formed on the upper surface of the outer gear near the through groove. A through hole is formed at the bottom of the countersunk hole. A fixing bolt is provided in the countersunk hole. A threaded hole is formed on the limiting platform corresponding to the fixing bolt.

[0008] Furthermore, the top of the shaft is welded and fixed to the bottom of the prism, and the outer diameter of the prism is smaller than the outer diameter of the shaft.

[0009] In this invention, the prism facilitates insertion and engagement with an external drive shaft, increasing friction and enabling the prism to rotate. Furthermore, the smaller outer diameter of the prism compared to the outer diameter of the shaft facilitates the insertion or replacement of the outer gear.

[0010] Specific, the top of the connecting column and the shaft are welded and fixed, a cutting surface is arranged on the side wall of the connecting column, a sliding groove is arranged in the cutting surface, a positioning hole is arranged at the bottom of the sliding groove close to the top, and a screw groove is arranged at the bottom of the connecting column.

[0011] In the utility model, the cutting surface cooperates with the sliding groove to help the external connecting rod and the connecting column to be inserted and cooperated, the sliding block on the connecting rod is inserted and cooperated with the sliding groove, the stability of the combination of the connecting rod and the connecting column is increased, and under the cooperation of the positioning hole, the connecting rod and the connecting column are stably combined and fixed by the external positioning screw passing through the positioning hole, and under the cooperation of the screw groove at the bottom, the external screw passes through the corresponding connecting rod and is screw-connected with the screw groove, so that the stability of the combination is increased.

[0012] Need to be explained, the limiting table and the shaft are welded and fixed, the width of the outer wall of the limiting table is matched with the width of the inner wall of the clamping groove, the clamping groove is in the shape of a prism, the limiting table is in the shape of a prism, and the thickness of the limiting table is matched with the depth of the inner wall of the clamping groove.

[0013] In the utility model, the clamping groove and the limiting table are inserted and cooperated, the stability of the combination is increased, the bottom of the limiting table is flush with the bottom of the outer sleeve gear, and the overall aesthetic degree is increased.

[0014] Further, the inner diameter of the through groove is matched with the outer diameter of the shaft, the inner diameter of the counterbore is matched with the diameter of the end of the fixing bolt, the diameter of the bottom of the fixing bolt is matched with the inner diameter of the perforation, and the diameter of the bottom of the fixing bolt is matched with the inner diameter of the threaded hole.

[0015] In the utility model, the bottom of the fixing bolt passes through the counterbore, the top of the fixing bolt is flush with the top of the outer sleeve gear, the aesthetic degree after installation is increased, the shaft and the through groove are slidably inserted, the outer sleeve gear and the shaft are slidably installed and cooperated, the outer sleeve gear is conveniently disassembled and replaced, the outer sleeve gear and gears of different sizes are meshed and cooperated without replacing the shaft, and the influence of overall replacement and increased cost consumption is reduced.

[0016] Secondly, the fixing bolt is screw-connected with the threaded hole through the perforation, and the top of the fixing bolt is flush with the top of the outer sleeve gear.

[0017] In the utility model, under the cooperation of the fixing bolt, the outer sleeve gear and the limiting table are stably installed and cooperated, the fixing bolt is disassembled, and the outer sleeve gear of different sizes of clamping teeth is replaced.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] 1. The utility model discloses a shaft rod with a limiting table, which is convenient for the clamping and cooperation of the sleeve gear with a clamping groove, and the limiting table is closely attached to the sleeve gear to increase the overall aesthetic degree. The fixing bolt is installed in the counterbore and passes through the perforation at the bottom and is screw-connected with the threaded hole on the limiting table. The fixing bolt is detachable, and the sleeve gear is convenient for dismounting and replacing. Different sleeve gears with different sizes of clamping teeth are replaced to realize the meshing and cooperation with gears of different sizes, reduce the overall replacement, and increase the cost consumption.

[0020] 2. The utility model discloses a prism, which is helpful for the clamping and combination of the top with the driving shaft, the matching section on the connecting column and the sliding slot, the convenient insertion and cooperation with the connecting rod, the insertion and cooperation of the sliding block on the connecting rod with the sliding slot, the insertion and cooperation of the connecting rod with the positioning hole through the positioning screw, the screw thread connection of the connecting rod with the screw groove through the external screw, the stability of the connecting column and the connecting rod combination, and the convenient manual dismounting and cooperation. DRAWINGS

[0021] Figure 1 It is the overall structure schematic diagram of the utility model;

[0022] Figure 2 It is the shaft rod structure schematic diagram of the utility model;

[0023] Figure 3 It is the shaft rod bottom view schematic diagram of the utility model;

[0024] Figure 4 It is the sleeve gear structure schematic diagram of the utility model;

[0025] Figure 5 It is the sleeve gear bottom view schematic diagram of the utility model.

[0026] The meanings of various marks in the drawing are as follows:

[0027] 1, shaft rod; 10, limiting table; 100, threaded hole;

[0028] 2, sleeve gear; 20, through slot; 200, clamping groove; 21, counterbore; 210, perforation; 22, fixing bolt;

[0029] 3, prism;

[0030] 4, connecting column; 40, screw groove; 41, section; 410, sliding slot; 411, positioning hole. DETAILED DESCRIPTION

[0031] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts under the premise that no creative efforts are made, belong to the scope of protection of the present application.

[0032] Please refer to Figures 1-5 The embodiment provides a technical scheme:

[0033] A gear shaft, comprising a shaft rod 1, a prism 3 is arranged at the top of the shaft rod 1, the top of the shaft rod 1 and the bottom of the prism 3 are welded and fixed, and the outer diameter of the prism 3 is smaller than the outer diameter of the shaft rod 1.

[0034] In the present application, the cooperation of the prism 3 helps to insert and cooperate with the driving shaft in the external environment, increases the friction, and further realizes the rotation of the prism 3 and the shaft rod 1, and the outer diameter of the prism 3 is smaller than the outer diameter of the shaft rod 1, which facilitates the insertion or replacement of the sleeve gear 2.

[0035] Further, a limiting table 10 is arranged at the middle of the shaft rod 1, the sleeve gear 2 is sleeved on the limiting table 10, a connecting column 4 is arranged at the bottom of the shaft rod 1, the top of the connecting column 4 is welded and fixed with the shaft rod 1, a cutting surface 41 is arranged on the side wall of the connecting column 4, a sliding groove 410 is arranged in the middle of the cutting surface 41, a positioning hole 411 is arranged at the bottom of the sliding groove 410 close to the top, and a screw groove 40 is arranged at the bottom of the connecting column 4.

[0036] In the present application, the cooperation of the cutting surface 41 and the sliding groove 410 helps to insert and cooperate with the connecting rod and the connecting column 4 in the external environment, and the sliding block on the connecting rod is inserted and cooperated with the sliding groove 410, the stability of the combination of the connecting rod and the connecting column 4 is increased, and under the cooperation of the positioning hole 411, the connecting rod and the connecting column 4 are stably combined and fixed by the external positioning screw passing through the positioning hole 411, and under the cooperation of the screw groove 40 at the bottom, the external screw passes through the corresponding connecting rod and is screwed with the screw groove 40, and the stability of the combination is increased.

[0037] It should be noted that a through groove 20 is arranged in the middle of the top of the sleeve gear 2, a clamping groove 200 is arranged at the bottom of the sleeve gear 2 and communicates with the through groove 20, a counterbore 21 is arranged on the upper surface of the sleeve gear 2 close to the through groove 20, a through hole 210 is arranged at the bottom of the counterbore 21, a fixing bolt 22 is arranged in the counterbore 21, and a threaded hole 100 is arranged on the limiting table 10 and corresponds to the fixing bolt 22.

[0038] Further, the inner diameter of the through groove 20 is matched with the outer diameter of the shaft rod 1, the inner diameter of the counterbore 21 is matched with the diameter of the end of the fixing bolt 22, the diameter of the bottom of the fixing bolt 22 is matched with the inner diameter of the through hole 210, and the diameter of the bottom of the fixing bolt 22 is matched with the inner diameter of the threaded hole 100.

[0039] In the utility model, the fixed bolt 22 passes through the counterbore 21 at the bottom, and the top of the fixed bolt 22 is flush with the top of the outer sleeve gear 2, so that the appearance after installation is improved; the shaft 1 is slidingly connected with the through slot 20, which helps the sliding installation of the outer sleeve gear 2 and the shaft 1, facilitates the disassembly and replacement of the outer sleeve gear 2, helps the meshing of the outer sleeve gear 2 and gears of different sizes without replacing the shaft 1, and reduces the overall replacement and cost consumption.

[0040] Specifically, the fixed bolt 22 is threadedly connected with the threaded hole 100 through the perforation 210, and the top of the fixed bolt 22 is flush with the top of the outer sleeve gear 2.

[0041] In the utility model, under the cooperation of the fixed bolt 22, the outer sleeve gear 2 and the limiting table 10 are stably installed and matched, the fixed bolt 22 is disassembled, and the outer sleeve gear 2 of different sizes is replaced.

[0042] It is worth supplementing that the limiting table 10 is welded and fixed with the shaft 1, the width of the outer wall of the limiting table 10 is matched with the width of the inner wall of the clamping groove 200, the clamping groove 200 is in the shape of a prism, the limiting table 10 is in the shape of a prism, and the thickness of the limiting table 10 is matched with the depth of the inner wall of the clamping groove 200.

[0043] In the utility model, the clamping groove 200 is connected with the limiting table 10, the stability of the combination is improved, the bottom of the limiting table 10 is flush with the bottom of the outer sleeve gear 2, and the overall appearance is improved.

[0044] In use, the limiting table 10 with the threaded hole 100 is combined and connected with the shaft 1, then the outer sleeve gear 2 with the counterbore 21 is connected with the shaft 1 through the through slot 20, the clamping groove 200 is connected with the limiting table 10, the fixed bolt 22 is threadedly connected with the threaded hole 100 through the perforation 210, the top of the fixed bolt 22 is flush with the top of the outer sleeve gear 2, the appearance is improved, then the prism 3 is welded and combined with the shaft 1, the connecting column 4 with the cutting surface 41 and the sliding groove 410 is welded and combined with the bottom of the shaft 1;

[0045] When gears of different sizes are needed to be meshed, the fixed bolt 22 is manually taken out of the counterbore 21, the outer sleeve gear 2 is replaced, the overall replacement and cost consumption are reduced, the top of the prism 3 is connected with the external driving shaft, the friction is increased, the prism 3 is rotated to rotate the shaft 1, the bottom of the connecting column 4 is connected with the external connecting rod, the sliding block on the connecting rod is connected with the sliding groove 410, the stability of the combination of the connecting rod and the connecting column 4 is improved, under the cooperation of the positioning hole 411, the connecting rod and the connecting column 4 are stably combined and fixed through the external positioning screw passing through the positioning hole 411, under the cooperation of the screw groove 40 at the bottom, the external screw passes through the corresponding connecting rod and is threadedly connected with the screw groove 40, and the overall combination, installation or disassembly and cooperation are realized.

Claims

1. A gear shaft comprising a shaft stem (1), characterized in that: The shaft (1) top is equipped with prism (3), the shaft (1) middle is equipped with limit platform (10), the limit platform (10) is equipped with sleeve gear (2), the shaft (1) bottom is equipped with connecting column (4), the sleeve gear (2) top middle is equipped with through slot (20), the sleeve gear (2) bottom is equipped with with the clamping groove (200) that communicates with through slot (20), the sleeve gear (2) upper surface near through slot (20) is equipped with counterbore (21), the counterbore (21) bottom is equipped with through hole (210), the counterbore (21) is equipped with fixed peg (22), the limit platform (10) is equipped with threaded hole (100) with fixed peg (22) corresponding place.

2. The gear shaft of claim 1, wherein: The shaft (1) top is welded with the bottom of prism (3), the outer diameter of prism (3) is less than the outer diameter of shaft (1).

3. The gear shaft of claim 1, wherein: The connecting column (4) top is welded with the shaft (1), the connecting column (4) side wall is equipped with cut surface (41), the cut surface (41) middle is equipped with sliding slot (410), the sliding slot (410) bottom is equipped with locating hole (411) near top, the connecting column (4) bottom is equipped with screw groove (40).

4. The gear shaft of claim 1, wherein: The limit platform (10) is welded with the shaft (1), the width of limit platform (10) outer wall is adapted to the width of clamping groove (200) inner wall, the clamping groove (200) is in the form of prism, the limit platform (10) is in the form of prism, the thickness of limit platform (10) is adapted to the depth of clamping groove (200) inner wall.

5. The gear shaft of claim 1, wherein: The through slot (20) inner diameter is adapted to the outer diameter of shaft (1), the counterbore (21) inner diameter is adapted to the fixed peg (22) end diameter, the fixed peg (22) bottom diameter is adapted to the through hole (210) inner diameter, the fixed peg (22) bottom diameter is adapted to the threaded hole (100) inner diameter.

6. The gear shaft of claim 5, wherein: The fixed peg (22) is screwed through the through hole (210) and threaded hole (100), the fixed peg (22) top is flush with the top of sleeve gear (2).

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