Speed regulating gear

Abstract

The speed regulating gear comprises a gear body and a rotating shaft, a mounting block is arranged in the gear body, a through groove is formed in the middle of the mounting block, grooves are formed in the top end and the bottom end of the inner wall of the through groove, and fixing mechanisms are arranged in the grooves. The fixing mechanism comprises a clamping rod, a fixing rod, sliding blocks, an elastic assembly and a positioning assembly, one end of the fixing rod is fixedly connected with the clamping rod, the fixing rod is connected with an inner cavity of the groove in a sliding and penetrating mode, the two sliding blocks are fixedly connected to the two sides of the fixing rod respectively, sliding grooves are formed in the two sides of the inner wall of the groove, and the sliding blocks are connected with inner cavities of the sliding grooves in a sliding and penetrating mode; the elastic assembly is located in the sliding groove, and the positioning assembly is arranged in the groove. By means of the arrangement mode that the clamping rod, the fixing rod, the sliding block, the elastic assembly and the positioning assembly are matched with one another, dismounting can be achieved only by rotating the nut, mounting and dismounting are easy, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of speed regulating gears, in particular to a speed regulating gear. Background Art

[0002] The speed regulating gear is a gear that adjusts the gear speed by combining gears with each other. The gear is made of powder metallurgy. The raw materials are mixed by a powder mixer, formed by a powder molding mechanical press, sintered together by a mesh belt sintering furnace, polished by a vibration grinder, and finally the inner hole is processed by a CNC lathe, and then oil-immersed and cleaned to obtain the finished product.

[0003] The installation of the speed regulating gear requires great skills. The inner ring of the gear toothed disc is usually fixed on the rotating shaft by the interference fit method, the transition fit method or the clearance fit method. It is not only troublesome to install, but also troublesome to disassemble. It is less practical. When the operator is a novice, the installation and disassembly will waste more time. Utility Model Content

[0004] The purpose of the utility model is to provide a speed regulating gear to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a speed regulating gear, comprising a gear body and a rotating shaft, wherein a mounting block is arranged inside the gear body;

[0006] A through slot is provided in the middle of the mounting block, and grooves are provided at the top and bottom of the inner wall of the through slot, and a fixing mechanism is provided inside the groove;

[0007] The fixing mechanism includes a clamping rod, a fixing rod, a slider, an elastic component and a positioning component. One end of the fixing rod is fixedly connected to the clamping rod. The fixing rod is slidably and interlacedly connected to the inner cavity of the groove. The two sliders are respectively fixedly connected to the two sides of the fixing rod. Slide grooves are provided on both sides of the inner wall of the groove. The slider is slidably and interlacedly connected to the inner cavity of the slide groove. The elastic component is located inside the slide groove, and the positioning component is arranged inside the groove.

[0008] Preferably, the elastic component includes a sliding rod and a compression spring, the top and bottom ends of the sliding rod are fixedly connected to the inner wall of the sliding groove, the compression spring is sleeved on the outside of the sliding rod, and the slider is slidably and interlacedly connected to the sliding rod.

[0009] Preferably, one end of the compression spring is fixedly connected to the inner wall of the slide groove, and the other end of the compression spring is fixedly connected to the slide block.

[0010] Preferably, the positioning assembly includes a sliding block, a threaded rod and a nut, the other end of the fixed rod is provided with a sliding groove, the sliding block is slidably and interlacedly connected with the inner cavity of the sliding groove, one end of the threaded rod is fixedly connected to the inner wall of the groove, the other end of the threaded rod is fixedly connected to the sliding block, the threaded rod is slidably and interlacedly connected with the inner cavity of the sliding groove, and the nut is threadedly and interlacedly connected with the threaded rod.

[0011] Preferably, a positioning hole is formed on the outer wall of the rotating shaft, and the clamping rod is slidably inserted and connected with the inner cavity of the positioning hole.

[0012] Preferably, fixing blocks are fixedly connected on both sides of the mounting block, and bolts are slidably inserted into the fixing blocks. A fixing hole is opened on one side of the gear body, and the bolts are inserted into the inner cavity thread of the fixing hole.

[0013] Technical effects and advantages of the utility model:

[0014] (1) The utility model utilizes a setting mode in which a clamping rod, a fixing rod, a sliding block, an elastic component and a positioning component are matched with each other. The clamping rod is clamped with the positioning hole of the rotating shaft, and the clamping rod is positioned by the positioning component. When disassembling, it only needs to turn the nut to disassemble. The installation and disassembly are relatively simple and the practicability is strong.

[0015] (2) The utility model utilizes a setting method in which a fixing block and a bolt cooperate with each other, so that when an old gear needs to be replaced because its teeth are worn and a new gear is installed, it is only necessary to unscrew the bolt and the mounting block does not need to be removed from the rotating shaft. Only the external gear body needs to be replaced, which is more convenient for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the internal structure of the front side of the utility model.

[0018] Figure 3 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0019] Figure 4 This is a schematic diagram of the internal structure of the fixing rod of the utility model.

[0020] In the figure: 1. gear body; 2. rotating shaft; 3. mounting block; 4. fixing mechanism; 41. clamping rod; 42. fixing rod; 43. slider; 44. elastic component; 441. sliding rod; 442. compression spring; 45. positioning component; 451. sliding block; 452. threaded rod; 453. nut; 5. fixing block; 6. bolt. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides Figure 1-4 A speed regulating gear shown in the figure comprises a gear body 1 and a rotating shaft 2. A mounting block 3 is arranged inside the gear body 1. The gear body 1 is a gear made of powder metallurgy. The raw materials are mixed by a powder mixer, then formed by a powder forming mechanical press, sintered together by a mesh belt sintering furnace, polished by a vibration grinder, and finally the inner hole is processed by a CNC lathe, and then the finished product is obtained by oil immersion cleaning.

[0023] A through slot is provided in the middle of the mounting block 3, and grooves are provided at the top and bottom of the inner wall of the through slot, and a fixing mechanism 4 is provided inside the groove;

[0024] The fixing mechanism 4 includes a clamping rod 41, a fixing rod 42, a slider 43, an elastic component 44 and a positioning component 45. One end of the fixing rod 42 is fixedly connected to the clamping rod 41. The fixing rod 42 is slidably and interlacedly connected with the inner cavity of the groove. Two sliders 43 are respectively fixedly connected to the two sides of the fixing rod 42. Both sides of the inner wall of the groove are provided with sliding grooves. The slider 43 is slidably and interlacedly connected with the inner cavity of the sliding groove. The elastic component 44 is located inside the sliding groove. The positioning component 45 is arranged inside the groove. The clamping rod 41 is thinner than the fixing rod 42. It is clamped with the positioning hole of the rotating shaft 2 through the clamping rod 41, and the clamping rod 41 is positioned by the positioning component 45.

[0025] The elastic component 44 includes a slide rod 441 and a compression spring 442. The top and bottom ends of the slide rod 441 are fixedly connected to the inner wall of the slide groove. The compression spring 442 is sleeved on the outside of the slide rod 441. The slider 43 is slidably connected with the slide rod 441.

[0026] One end of the compression spring 442 is fixedly connected to the inner wall of the slide groove, and the other end of the compression spring 442 is fixedly connected to the slider 43. The compression spring 442 is always in a compressed state, so that the compression spring 442 always has an elastic force on the fixed rod 42 through the slider 43. After the fixed rod 42 is no longer limited by the nut 453, it can be directly retracted into the inside of the groove under the force, thereby releasing the fixed connection with the rotating shaft 2.

[0027] The positioning assembly 45 includes a sliding block 451, a threaded rod 452 and a nut 453. A sliding groove is provided at the other end of the fixed rod 42. The sliding block 451 is slidably and interlacedly connected with the inner cavity of the sliding groove. One end of the threaded rod 452 is fixedly connected to the inner wall of the groove. The other end of the threaded rod 452 is fixedly connected to the sliding block 451. The threaded rod 452 is slidably and interlacedly connected with the inner cavity of the sliding groove. The nut 453 is threadedly and interlacedly connected with the threaded rod 452. By adjusting the nut 453, the telescopic length of the fixed rod 42 on the threaded rod 452 can be adjusted, so that the telescopic length of the clamping rod 41 inside the through groove can be adjusted.

[0028] A positioning hole is opened on the outer wall of the rotating shaft 2, and the clamping rod 41 is slidably inserted and connected with the inner cavity of the positioning hole. By inserting and connecting the clamping rod 41 with the positioning hole and making the fixing rod 42 fit with the outer wall of the rotating shaft 2, the gear can be fixedly installed on the rotating shaft 2.

[0029] Both sides of the mounting block 3 are fixedly connected with fixing blocks 5, and the fixing blocks 5 are slidably inserted and connected with bolts 6. A fixing hole is opened on one side of the gear body 1, and the bolts 6 are inserted and connected with the inner cavity thread of the fixing hole. The gear body 1 can be disassembled by the bolts 6. Therefore, when the gear needs to be replaced due to wear and tear of the teeth, when installing a new gear, it is only necessary to unscrew the bolts 6. The mounting block 3 does not need to be removed from the rotating shaft 2, and only the external gear body 1 needs to be replaced, which is more convenient for users.

[0030] Working principle of this utility model:

[0031] When the speed regulating gear is connected to the rotating shaft 2, the rotating shaft 2 is inserted into the interior of the through groove and the nut 453 is turned so that the nut 453 squeezes the fixing rod 42, so that the fixing rod 42 slides along the sliding rod 441 through the sliding block 43 and squeezes the compression spring 442. When the clamping rod 41 is connected with the positioning hole opened in the rotating shaft 2 and one end of the fixing rod 42 is in contact with the outer wall of the rotating shaft 2, the rotation of the nut 453 can be stopped, so that the speed regulating gear is installed on the rotating shaft 2. When the outer teeth of the gear are severely worn and need to be replaced, the gear body 1 can be disassembled by unscrewing the bolt 6, and the gear body 1 can be directly replaced without moving the fixing mechanism 4. If the entire speed regulating gear needs to be replaced, by twisting the nut 453, the clamping rod 41 can pop out of the positioning hole on the rotating shaft 2 by itself under the elastic force of the compression spring 442, so that the gear can be replaced quickly, which is simple and convenient.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A speed regulating gear, comprising: A gear body (1) and a rotating shaft (2), wherein a mounting block (3) is arranged inside the gear body (1); The feature is that: a through slot is provided in the middle of the mounting block (3), grooves are provided at the top and bottom of the inner wall of the through slot, and a fixing mechanism (4) is provided inside the groove; The fixing mechanism (4) comprises a clamping rod (41), a fixing rod (42), a sliding block (43), an elastic component (44) and a positioning component (45); one end of the fixing rod (42) is fixedly connected to the clamping rod (41); the fixing rod (42) is slidably connected to the inner cavity of the groove; the two sliding blocks (43) are respectively fixedly connected to the two sides of the fixing rod (42); sliding grooves are provided on both sides of the inner wall of the groove; the sliding block (43) is slidably connected to the inner cavity of the sliding groove; the elastic component (44) is located inside the sliding groove; and the positioning component (45) is arranged inside the groove.

2. A speed regulating gear according to claim 1, characterized in that: The elastic component (44) includes a sliding rod (441) and a compression spring (442). The top end and the bottom end of the sliding rod (441) are fixedly connected to the inner wall of the sliding groove. The compression spring (442) is sleeved on the outside of the sliding rod (441). The sliding block (43) is slidably connected with the sliding rod (441).

3. A speed regulating gear according to claim 2, characterized in that: One end of the compression spring (442) is fixedly connected to the inner wall of the slide groove, and the other end of the compression spring (442) is fixedly connected to the slide block (43).

4. A speed regulating gear according to claim 1, characterized in that: The positioning assembly (45) includes a sliding block (451), a threaded rod (452) and a nut (453); the other end of the fixed rod (42) is provided with a sliding groove; the sliding block (451) is slidably inserted and connected with the inner cavity of the sliding groove; one end of the threaded rod (452) is fixedly connected to the inner wall of the groove; the other end of the threaded rod (452) is fixedly connected to the sliding block (451); the threaded rod (452) is slidably inserted and connected with the inner cavity of the sliding groove; and the nut (453) is threadedly inserted and connected with the threaded rod (452).

5. A speed regulating gear according to claim 1, characterized in that: The outer wall of the rotating shaft (2) is provided with a positioning hole, and the clamping rod (41) is slidably inserted and connected with the inner cavity of the positioning hole.

6. A speed regulating gear according to claim 1, characterized in that: Both sides of the mounting block (3) are fixedly connected with fixing blocks (5), and the fixing blocks (5) are slidably inserted and connected with bolts (6). One side of the gear body (1) is provided with a fixing hole, and the bolt (6) is threadably inserted and connected with the inner cavity of the fixing hole.

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