Wear-resistant eccentric shaft

Abstract

The utility model relates to the technical field of eccentric shafts, and discloses a wear-resistant eccentric shaft which comprises a first positioning shaft, the end of the first positioning shaft is fixedly connected with a first connecting rod, the outer surface of the first connecting rod is sleeved with a first driving shaft, and the end of the first driving shaft is in threaded connection with a pull rod. The outer surface of the pull rod is sleeved with an extension rod, the end of the extension rod is detachably connected with a second driving shaft, and the end of the second driving shaft is connected with a second connecting rod in an inserted mode. According to the wear-resistant eccentric shaft, through cooperative arrangement of the main shaft sleeve and the auxiliary shaft sleeve, barrier protection can be formed on the surfaces of the first driving shaft, the second driving shaft and the extension rod during long-term use, then the situation that the first driving shaft, the second driving shaft and the extension rod are directly damaged due to long-term use is avoided, and the main shaft sleeve and the auxiliary shaft sleeve are replaced regularly; the service life of the device can be greatly prolonged, the replacement cost is low, and the overall practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of eccentric shafts, in particular to a wear-resistant eccentric shaft. Background Art

[0002] A workpiece whose outer circle is parallel to the axis of the outer circle but does not overlap is called an eccentric shaft. The eccentric shaft is generally fixed to the rotating shaft of the motor through an eccentric hole. When the motor starts, it performs cam motion. Therefore, it is widely used in automobiles, engines, pumps, etc.

[0003] In mechanical transmission, the conversion of rotary motion into reciprocating linear motion or reciprocating linear motion into rotary motion is generally accomplished by using eccentric parts. For example, the lubrication pump driven by the eccentric workpiece in the headstock of a lathe, the crankshaft in a car engine, etc. In order to facilitate the adjustment of the center distance between shafts, the eccentric shaft is usually used in the V-belt transmission of a planar connecting rod mechanism. A general shaft can only drive the workpiece to rotate, but an eccentric shaft can not only transmit rotation, but also revolution.

[0004] However, when the existing eccentric shaft is actually used, the eccentric part often needs to cooperate with other parts to carry out long-term driving work, which will cause wear to the shaft itself after a long period of use. However, the cost of replacing the entire shaft is relatively high. Therefore, the practicality of the existing eccentric shaft is relatively low. In addition, after the existing eccentric shaft is manufactured, the overall length is often fixed. In some research and development processes, it is necessary to frequently replace parts of different lengths to achieve different mechanical operations. Frequently manufacturing shafts of different lengths will also increase the cost of research and development. Therefore, the applicability of the existing eccentric shaft is not high. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a wear-resistant eccentric shaft, which solves the problems in the prior art:

[0007] However, when the existing eccentric shaft is actually used, the eccentric part often needs to cooperate with other parts to carry out long-term driving work, which will cause wear to the shaft itself after a long period of use. However, the cost of replacing the entire shaft is relatively high. Therefore, the practicality of the existing eccentric shaft is relatively low. In addition, after the existing eccentric shaft is manufactured, the overall length is often fixed. In some research and development processes, it is necessary to frequently replace parts of different lengths to achieve different mechanical operations. Frequently manufacturing shafts of different lengths will also increase the cost of research and development, and thus the existing eccentric shaft has a problem of low applicability.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the utility model is implemented through the following technical solutions: a wear-resistant eccentric shaft, comprising a first positioning shaft, the end of the first positioning shaft is fixedly connected to a first connecting rod, the outer surface of the first connecting rod is sleeved with a first driving shaft, the end of the first driving shaft is threadedly connected to a pull rod, the outer surface of the pull rod is sleeved with an extension rod, the end of the extension rod is detachably connected to a second driving shaft, the end of the second driving shaft is plugged into the second connecting rod, the end of the second connecting rod is fixedly connected to a second positioning shaft, the outer surfaces of the first driving shaft and the second driving shaft are detachably connected to a main shaft sleeve, and the outer surface of the extension rod is detachably connected to a secondary shaft sleeve.

[0010] Optionally, one end of the extension rod is fixedly connected with a clamping block, and the other end of the extension rod is fixedly connected with a clamping slot adapted to the clamping block.

[0011] Optionally, a limit ring is fixedly connected to the inner side wall of the second driving shaft, and the outer surface of the limit ring is threadedly connected to the end of the pull rod.

[0012] Optionally, the outer surfaces of the first drive shaft and the second drive shaft are both provided with fixing holes, and the outer surface of the main shaft sleeve is threadedly connected with a fixing rod.

[0013] Optionally, one end of the fixing rod that passes through the main shaft sleeve is threadedly connected to the inner wall of the fixing hole, so that the two main shaft sleeves are respectively fastened to the outer surfaces of the first drive shaft and the second drive shaft.

[0014] Optionally, the outer surfaces of the first connecting rod and the second connecting rod are provided with limiting grooves, and the ends of the fixing rod passing through the first drive shaft and the second drive shaft are respectively engaged with the inner walls of the two limiting grooves, so that the first connecting rod and the second connecting rod are respectively fastened to the inner walls of the first drive shaft and the second drive shaft.

[0015] Optionally, the ends of the secondary shaft sleeve and the main shaft sleeve are both provided with positioning grooves, and the inner walls of the positioning grooves are clamped with connecting rings.

[0016] (III) Beneficial effects

[0017] The utility model provides a wear-resistant eccentric shaft, which has the following beneficial effects:

[0018] 1. The wear-resistant eccentric shaft, through the matching arrangement of the main shaft sleeve and the secondary shaft sleeve, can form barrier protection on the surfaces of the first drive shaft, the second drive shaft and the extension rod during long-term use, thereby avoiding direct damage to the first drive shaft, the second drive shaft and the extension rod due to long-term use, and regularly replacing the main shaft sleeve and the secondary shaft sleeve can greatly extend the service life of the device, and the replacement cost is also low, thereby improving the overall practicality of the device.

[0019] 2. The wear-resistant eccentric shaft, through the coordinated arrangement of the first drive shaft, the second drive shaft and the extension rod, can change the distance between the first drive shaft and the second drive shaft according to different usage requirements, and change the number of extension rods used, and then can adjust the overall usage length of the device according to different usage requirements, thereby improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall installation structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the installation structure of the first connecting rod of the utility model;

[0022] Figure 3 This is a schematic diagram of the installation structure of the extension rod of the utility model;

[0023] Figure 4 This is a schematic diagram of the explosion structure of the main shaft sleeve of the utility model;

[0024] Figure 5 This is a schematic diagram of the auxiliary shaft sleeve installation structure of the utility model.

[0025] In the figure: 1. first positioning shaft; 2. first connecting rod; 3. first driving shaft; 4. pulling rod; 5. extension rod; 6. clamping block; 7. clamping groove; 8. second driving shaft; 9. limiting ring; 10. second connecting rod; 11. second positioning shaft; 12. main shaft sleeve; 13. fixing hole; 14. fixing rod; 15. limiting groove; 16. secondary shaft sleeve; 17. positioning groove; 18. connecting ring. DETAILED DESCRIPTION

[0026] 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. 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.

[0027] The utility model provides a technical solution: a wear-resistant eccentric shaft, which is specifically as follows:

[0028] See also Figures 1 to 5 In order to ensure the stability of the extension rod 5, a pull rod 4 is threadedly connected to the end of the first driving shaft 3;

[0029] Among them, the end of the first positioning shaft 1 is fixedly connected to the first connecting rod 2, and the outer surface of the first connecting rod 2 is sleeved with the first driving shaft 3. The first connecting rod 2 can be directly connected and fixed to the driving device, and then with the help of the detachable connection between the first connecting rod 2 and the first driving shaft 3, it is also convenient to disassemble or install the main shaft sleeve 12 on the first driving shaft 3, and the pull rod 4 can extend outward from the end of the first driving shaft 3, and then with the help of the relative tension between the pull rod 4 and the limit ring 9, a suitable number of extension rods 5 can be fixed between the first driving shaft 3 and the second driving shaft 8, thereby improving the stability of the device when in use;

[0030] See also Figures 1 to 5 In order to adjust the length of the device according to different usage requirements, a second drive shaft 8 is detachably connected to the end of the extension rod 5;

[0031] The surfaces of the second driving shaft 8 and the extension rod 5 can be relatively disassembled, and then, after the second driving shaft 8 is removed, different numbers of extension rods 5 and pull rods 4 can be installed and docked according to different usage requirements. After the installation is completed, the second driving shaft 8 can be installed and fixed. One end of the extension rod 5 is fixedly connected with a clamping block 6, and the other end of the extension rod 5 is fixedly connected with a clamping groove 7 adapted to the clamping block 6. With the mutual docking and fixation between the clamping block 6 and the clamping groove 7, the docking accuracy between the extension rods 5 can be guaranteed, and the extension rods 5 can also be stably driven to rotate synchronously when the first driving shaft 3 and the second driving shaft 8 are rotated. The second drive shaft 8 is rotated step by step, thereby ensuring the accuracy of power transmission of the device. The inner side wall of the second drive shaft 8 is fixedly connected to the limit ring 9, and the outer surface of the limit ring 9 is threadedly connected to the end of the pull rod 4. With the help of the relative tension between the limit ring 9 and the pull rod 4, the first drive shaft 3 and the second drive shaft 8 can be used to fully tighten and fix a suitable number of extension rods 5 to reduce the relative displacement. The end of the second drive shaft 8 is plugged into the second connecting rod 10, and the end of the second connecting rod 10 is fixedly connected with the second positioning shaft 11. The second positioning shaft 11 and the second connecting rod 10 can be used to ensure the rotation stability of the second drive shaft 8;

[0032] See also Figures 1 to 5 In order to protect the first drive shaft 3 and the second drive shaft 8, a main shaft sleeve 12 is detachably connected to the outer surface of the first drive shaft 3 and the second drive shaft 8;

[0033] The main shaft sleeve 12 forms a blocking protection on the surface of the first drive shaft 3 and the second drive shaft 8, so that even during long-term operation, it can avoid direct damage to the first drive shaft 3 and the second drive shaft 8 body. After long-term use, only the main shaft sleeve 12 needs to be replaced separately, thereby reducing the cost required for replacement of the device. The outer surfaces of the first drive shaft 3 and the second drive shaft 8 are provided with fixing holes 13, and the outer surfaces of the main shaft sleeves 12 are threadedly connected with fixing rods 14. One end of the fixing rod 14 penetrates into the main shaft sleeve 12 and is threadedly connected to the inner wall of the fixing hole 13, so that the two main shaft sleeves 12 are respectively fastened to the outer surfaces of the first drive shaft 3 and the second drive shaft 8. With the help of the fixing holes 13 and the fixing rods 14 The mutual cooperation between them can synchronously drive the main shaft sleeve 12 to rotate when the first drive shaft 3 and the second drive shaft 8 rotate, thereby improving the stability of power transmission, and the outer surfaces of the first connecting rod 2 and the second connecting rod 10 are provided with limiting grooves 15, and the ends of the fixing rod 14 that penetrate into the first drive shaft 3 and the second drive shaft 8 are respectively engaged with the inner side walls of the two limiting grooves 15, so that the first connecting rod 2 and the second connecting rod 10 are respectively fastened to the inner walls of the first drive shaft 3 and the second drive shaft 8. With the help of the limiting grooves 15, the relative stability between the first drive shaft 3 and the first connecting rod 2 and between the second drive shaft 8 and the second connecting rod 10 can be ensured, and stability can be ensured, and it can also be conveniently disassembled after loosening the fixing rod 14;

[0034] See also Figures 1 to 5 In order to protect the surface of the extension rod 5, a secondary shaft sleeve 16 is detachably connected to the outer surface of the extension rod 5;

[0035] The ends of the secondary shaft sleeve 16 and the main shaft sleeve 12 are both provided with positioning grooves 17, and the inner wall of the positioning groove 17 is clamped with a connecting ring 18. The secondary shaft sleeve 16 can form a protection on the surface of the extension rod 5, and its function is the same as that of the main shaft sleeve 12. The relative installation between the positioning groove 17 and the connecting ring 18 can ensure that when the main shaft sleeve 12 rotates, the secondary shaft sleeve 16 is synchronously driven to rotate, so as to ensure the normal transmission of power.

[0036] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0037] In the utility model, the working steps of the device are as follows:

[0038] First, the first drive shaft 3 is installed and positioned with the help of the first connecting rod 2, and then, according to different driving requirements, an appropriate number of pull rods 4 can be docked and fixed, and then an appropriate number of extension rods 5 can be docked and fixed, and the second drive shaft 8 is screwed on the end of the pull rod 4 with the help of the limiting ring 9, and then the main shaft sleeve 12 is sleeved on the surface of the first drive shaft 3, and then the fixing rod 14 is screwed into the fixing hole 13, and the connecting ring 18 and the secondary shaft sleeve 16 can be sleeved on the surface of the extension rod 5 in sequence until the other and the main shaft sleeve 12 are sleeved on the surface of the second drive shaft 8, and then the corresponding fixing rod 14 is tightened to fix the main shaft sleeve 12 and the secondary shaft sleeve 16, and then the first connecting rod 2 is inserted into the first drive shaft 3, and the second connecting rod 10 is inserted into the second drive shaft 8, and the fixing rod 13 is tightened again so that the fixing rod 13 is inserted into the limiting groove 15, and the assembly of the device can be completed.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant eccentric shaft, comprising a first positioning shaft (1), characterized in that: The end of the first positioning shaft (1) is fixedly connected to the first connecting rod (2), the outer surface of the first connecting rod (2) is sleeved with the first driving shaft (3), the end of the first driving shaft (3) is threadedly connected to the pull rod (4), the outer surface of the pull rod (4) is sleeved with the extension rod (5), the end of the extension rod (5) is detachably connected to the second driving shaft (8), the end of the second driving shaft (8) is plugged into the second connecting rod (10), the end of the second connecting rod (10) is fixedly connected to the second positioning shaft (11), the outer surfaces of the first driving shaft (3) and the second driving shaft (8) are both detachably connected to the main shaft sleeve (12), and the outer surface of the extension rod (5) is detachably connected to the secondary shaft sleeve (16).

2. A wear-resistant eccentric shaft according to claim 1, characterized in that: One end of the extension rod (5) is fixedly connected to a clamping block (6), and the other end of the extension rod (5) is fixedly connected to a clamping slot (7) adapted to the clamping block (6).

3. A wear-resistant eccentric shaft according to claim 1, characterized in that: The inner side wall of the second drive shaft (8) is fixedly connected to a limit ring (9), and the outer surface of the limit ring (9) is threadedly connected to the end of the pull rod (4).

4. The wear-resistant eccentric shaft according to claim 1, characterized in that: The outer surfaces of the first drive shaft (3) and the second drive shaft (8) are both provided with fixing holes (13), and the outer surface of the main shaft sleeve (12) is threadedly connected with a fixing rod (14).

5. A wear-resistant eccentric shaft according to claim 4, characterized in that: One end of the fixing rod (14) penetrates into the main shaft sleeve (12) and is threadedly connected to the inner wall of the fixing hole (13), so that the two main shaft sleeves (12) are respectively fastened to the outer surfaces of the first drive shaft (3) and the second drive shaft (8).

6. A wear-resistant eccentric shaft according to claim 5, characterized in that: The outer surfaces of the first connecting rod (2) and the second connecting rod (10) are both provided with limiting grooves (15); the ends of the fixing rod (14) penetrate into the first drive shaft (3) and the second drive shaft (8) and are respectively engaged with the inner side walls of the two limiting grooves (15), so that the first connecting rod (2) and the second connecting rod (10) are respectively fixedly connected to the inner walls of the first drive shaft (3) and the second drive shaft (8).

7. A wear-resistant eccentric shaft according to claim 6, characterized in that: The ends of the secondary shaft sleeve (16) and the main shaft sleeve (12) are both provided with positioning grooves (17), and the inner wall of the positioning groove (17) is clamped with a connecting ring (18).

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