Lightweight transmission shaft

Abstract

The utility model discloses a lightweight transmission shaft, and particularly relates to the transmission shaft manufacturing field, the lightweight transmission shaft comprises a fixed plate, the right side of the fixed plate is fixedly connected with a telescopic assembly, the left side of the fixed plate is fixedly connected with a fixed shaft, the left side of the fixed shaft is fixedly connected with a universal joint, and the left side of the universal joint is fixedly connected with a connecting shaft; the left side of the connecting shaft is fixedly connected with a fixing assembly. The telescopic assembly comprises the telescopic shaft, a user can control the first knife edge in the telescopic assembly through a screwdriver, the first knife edge drives the transmission rod to rotate, the transmission rod drives the rotating shaft and the lead screw to rotate, the push rod can push the extension shaft to extend, and therefore the length of the transmission shaft is prolonged; the length of the transmission shaft can meet the requirements of different machines, and meanwhile, the transmission shaft can fix different specifications of mounting holes in different machines through the fixing assembly.

Description

Technical Field

[0001] The utility model relates to the field of transmission shaft manufacturing, and more specifically, to a lightweight transmission shaft. Background Art

[0002] The transmission shaft is a high-speed, low-support rotating body, so its dynamic balance is very important. Generally, the transmission shaft must be tested for dynamic balance before leaving the factory and adjusted on a balancing machine. For front-engine rear-wheel drive vehicles, it is the shaft that transmits the rotation of the transmission to the main reducer. It can have several sections, and the sections can be connected by universal joints;

[0003] After searching, the existing patent (publication number: CN213628557U) discloses a lightweight transmission shaft. It includes a shaft tube and a first shaft, one end of the shaft tube is fixed to the first shaft, and the shaft tube is coaxial with the first shaft; the outer diameter of the shaft tube is greater than or equal to 18cm, and the length is greater than or equal to 80cm. The first shaft includes a sliding fork and a sleeve, one end of the sleeve is sleeved on the end of the sliding fork and is slidably connected to the sliding fork, and the sleeve is fixed to the shaft tube at one end away from the sliding fork. The lightweight transmission shaft in the utility model does not need to be supported by an intermediate support assembly to ensure that the transmission shaft can adapt to different vehicle models.

[0004] During the use of the existing transmission shaft, the length of the transmission shaft is fixed. When the transmission shaft is in use, it is difficult for the user to adjust the length of the transmission shaft, resulting in that when the transmission shaft is installed on different machines, the length of the transmission shaft is difficult to perfectly match the length required by the mechanical device, resulting in a reduced application range of the transmission shaft;

[0005] Therefore, a lightweight transmission shaft is proposed to solve the above problem. Meanwhile, the above cited patent documents do not propose any relevant solution to solve the length adjustment problem of the transmission shaft. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a lightweight transmission shaft to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lightweight transmission shaft, comprising a fixed plate, a telescopic component is fixedly connected to the right side of the fixed plate, a slide rail is fixedly connected to the upper and lower sides and the left and right sides of the fixed plate, a slider is movably connected to the outer wall of the slide rail, a damping cylinder is fixedly connected to one side of the slider, a shock absorbing spring is sleeved on the outer wall of the damping cylinder, a conduction rod is movably connected to one side of the slider, a connecting plate is movably connected to one side of the conduction rod, a fixed shaft is fixedly connected to one side of the connecting plate, a universal joint is fixedly connected to the left side of the fixed shaft, a connecting shaft is fixedly connected to the left side of the universal joint, and a fixed component is fixedly connected to the left side of the connecting shaft;

[0008] The telescopic assembly includes a telescopic shaft, a transmission rod is movably connected to the upper part of the telescopic shaft, a first cutting edge is opened on the upper part of the transmission rod, a first bevel gear is fixedly connected to the lower part of the transmission rod, a rotating shaft is movably connected to the inside of the telescopic shaft, a screw rod is fixedly connected to the right side of the rotating shaft, a push rod is threadedly connected to the outer wall of the screw rod, and an extension shaft is fixedly connected to the right side of the push rod.

[0009] Preferably, a sliding structure is formed between the telescopic shaft and the extension shaft, and a notch matching the push rod is provided on the right side of the telescopic shaft.

[0010] Preferably, the first blade and the transmission rod form an integrated structure, and a bearing is provided at the connection between the transmission rod and the telescopic shaft.

[0011] Preferably, a gear transmission structure is formed between the transmission rod and the rotating shaft via a first bevel gear, and the rotating shaft and the lead screw are coaxially arranged.

[0012] Preferably, the fixing assembly includes a mounting shaft, a front end of the mounting shaft is movably connected to a second cutting edge, a rear end of the second cutting edge is fixedly connected to a second bevel gear, the interior of the mounting shaft is movably connected to a threaded rod, an outer wall of the threaded rod is threadedly connected to a telescopic rod, one side of the telescopic rod is fixedly connected to an extrusion half ring, a limiting rod is fixedly connected to the upper interior of the mounting shaft, and an outer wall of the limiting rod is movably connected to a limiting block.

[0013] Preferably, the extrusion half rings are symmetrically arranged on the left and right sides of the installation shaft, and a sliding structure is formed between the extrusion half rings and the installation shaft through a telescopic rod.

[0014] Preferably, a gear transmission structure is formed between the second cutting edge and the threaded rod via the second bevel gear, and the threaded rod is symmetrically arranged on the left and right sides of the second bevel gear.

[0015] Preferably, a sliding structure is formed between the limiting rod and the limiting block, and the limiting block is fixedly connected to the telescopic rod.

[0016] Technical effects and advantages of the utility model:

[0017] 1. Compared with the prior art, the lightweight transmission shaft includes a telescopic shaft through a telescopic assembly. The user can control the first blade inside the telescopic assembly through a screwdriver, so that the first blade drives the transmission rod to rotate, thereby the transmission rod drives the rotating shaft and the screw to rotate, so that the push rod can push the extension shaft to extend, thereby extending the length of the transmission shaft itself, so that the length of the transmission shaft can meet the length required by different machines.

[0018] 2. Compared with the prior art, the lightweight transmission shaft includes a mounting shaft through a fixing assembly. The user can adjust the outer diameter of the mounting shaft through the fixing assembly so that the outer diameter of the mounting shaft can match the inner diameter of the mounting hole on the machine, so that the transmission shaft can be fixed to mounting holes of different specifications on different machines through the fixing assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional internal structure schematic diagram of the utility model.

[0020] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the utility model.

[0021] Figure 3 For this utility model Figure 1 A in the figure is an enlarged structural diagram.

[0022] Figure 4 For this utility model Figure 1 A schematic diagram of the structure at B in the figure

[0023] Figure 5 This is a schematic diagram of the internal main structure of the fixed plate of the utility model.

[0024] The accompanying drawings are marked as follows: 1. fixed plate; 2. telescopic component; 201. telescopic shaft; 202. first cutting edge; 203. transmission rod; 204. screw rod; 205. push rod; 206. first bevel gear; 207. rotating shaft; 208. extension shaft; 3. fixed component; 301. extrusion half ring; 302. telescopic rod; 303. second cutting edge; 304. mounting shaft; 305. limit rod; 306. threaded rod; 307. limit block; 308. second bevel gear; 4. connecting shaft; 5. fixed shaft; 6. universal joint; 7. connecting plate; 8. slide rail; 9. shock-absorbing spring; 10. conduction rod; 11. slider; 12. damping cylinder. DETAILED DESCRIPTION

[0025] 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.

[0026] Embodiment 1

[0027] As attached Figure 1 and Figure 3 A lightweight transmission shaft shown in the figure comprises a fixed plate 1, a telescopic component 2 is fixedly connected to the right side of the fixed plate 1, a slide rail 8 is fixedly connected to the upper and lower sides and the left and right sides of the fixed plate 1, a slider 11 is movably connected to the outer wall of the slide rail 8, a damping cylinder 12 is fixedly connected to one side of the slider 11, a shock absorbing spring 9 is sleeved on the outer wall of the damping cylinder 12, a conduction rod 10 is movably connected to one side of the slider 11, a connecting plate 7 is movably connected to one side of the conduction rod 10, a fixed shaft 5 is fixedly connected to one side of the connecting plate 7, a universal joint 6 is fixedly connected to the left side of the fixed shaft 5, a connecting shaft 4 is fixedly connected to the left side of the universal joint 6, and a fixed component 3 is fixedly connected to the left side of the connecting shaft 4;

[0028] The telescopic assembly 2 includes a telescopic shaft 201, a transmission rod 203 is movably connected to the upper part of the telescopic shaft 201, a first cutting edge 202 is opened on the upper part of the transmission rod 203, a first bevel gear 206 is fixedly connected to the lower part of the transmission rod 203, a rotating shaft 207 is movably connected to the inside of the telescopic shaft 201, a screw rod 204 is fixedly connected to the right side of the rotating shaft 207, a push rod 205 is threadedly connected to the outer wall of the screw rod 204, and an extension shaft 208 is fixedly connected to the right side of the push rod 205.

[0029] Among them: the user can use a screwdriver to control the first blade 202 inside the telescopic component 2, so that the first blade 202 drives the transmission rod 203 to rotate, so that the transmission rod 203 drives the rotating shaft 207 and the screw rod 204 to rotate, so that the push rod 205 can push the extension shaft 208 to extend, so that the length of the transmission shaft itself is extended, so that the length of the transmission shaft can meet the length required by different machines. At the same time, the user can adjust the outer diameter of the installation shaft 304 through the fixing component 3, so that the outer diameter of the installation shaft 304 can match the inner diameter of the installation hole on the machine, so that the transmission shaft can be fixed to the installation holes of different specifications on different machines through the fixing component 3.

[0030] Embodiment 2

[0031] Based on the first embodiment, the solution in the first embodiment is further detailed in combination with the following specific working methods. Figures 1 to 5As shown, see the following description for details:

[0032] As a preferred embodiment, a sliding structure is formed between the telescopic shaft 201 and the extension shaft 208, and a notch matching the push rod 205 is opened on the right side of the telescopic shaft 201; further, through the structural relationship between the telescopic shaft 201 and the extension shaft 208, the extension shaft 208 can be extended from the telescopic shaft 201 under the action of external force, and through the notch opened on the right side of the telescopic shaft 201, the telescopic shaft 201 can limit the push rod 205.

[0033] As a preferred embodiment, the first cutting edge 202 and the transmission rod 203 form an integrated structure, and a bearing is provided at the connection between the transmission rod 203 and the telescopic shaft 201; further, through the structural relationship between the first cutting edge 202 and the transmission rod 203, the user can control the transmission rod 203 through the first cutting edge 202, and through the bearing provided at the connection between the transmission rod 203 and the telescopic shaft 201, the friction of the telescopic shaft 201 on the transmission rod 203 is reduced.

[0034] As a preferred embodiment, a gear transmission structure is formed between the transmission rod 203 and the rotating shaft 207 through the first bevel gear 206, and the rotating shaft 207 and the screw rod 204 are coaxially arranged; further, through the structural relationship between the transmission rod 203 and the rotating shaft 207, the transmission rod 203 can drive the rotating shaft 207 to rotate through the first bevel gear 206, and through the structural relationship between the rotating shaft 207 and the screw rod 204, the rotating shaft 207 can drive the screw rod 204 to rotate.

[0035] As a preferred embodiment, the fixing component 3 includes a mounting shaft 304, the front end of the mounting shaft 304 is movably connected with a second blade 303, the rear end of the second blade 303 is fixedly connected with a second bevel gear 308, the interior of the mounting shaft 304 is movably connected with a threaded rod 306, the outer wall of the threaded rod 306 is threadedly connected with a telescopic rod 302, one side of the telescopic rod 302 is fixedly connected with an extrusion half ring 301, the upper interior of the mounting shaft 304 is fixedly connected with a limiting rod 305, and the outer wall of the limiting rod 305 is movably connected with a limiting block 307; further, the user can adjust the outer diameter of the mounting shaft 304 through the fixing component 3, so that the outer diameter of the mounting shaft 304 can match the inner diameter of the mounting hole on the machine, so that the transmission shaft can be fixed to mounting holes of different specifications on different machines through the fixing component 3.

[0036] As a preferred embodiment, the extrusion half ring 301 is symmetrically arranged on the left and right sides of the installation shaft 304, and a sliding structure is formed between the extrusion half ring 301 and the installation shaft 304 through the telescopic rod 302; further, through the positional relationship between the extrusion half ring 301 and the installation shaft 304, the extrusion half ring 301 can squeeze the left and right sides of the installation shaft 304, and through the structural relationship between the extrusion half ring 301 and the installation shaft 304, the user can control the extrusion half ring 301 through the telescopic rod 302.

[0037] As a preferred embodiment, a gear transmission structure is formed between the second cutting edge 303 and the threaded rod 306 through the second bevel gear 308, and the threaded rod 306 is symmetrically arranged on the left and right sides of the second bevel gear 308; further, through the structural relationship between the second cutting edge 303 and the threaded rod 306, and the positional relationship between the threaded rod 306 and the second bevel gear 308, when the second cutting edge 303 drives the threaded rod 306 to rotate through the second bevel gear 308, the threaded rods 306 on both sides can rotate in the opposite direction under the action of the second bevel gear 308.

[0038] As a preferred embodiment, a sliding structure is formed between the limit rod 305 and the limit block 307, and the limit block 307 and the telescopic rod 302 are fixedly connected; further, through the structural relationship between the limit rod 305 and the limit block 307, the limit block 307 can slide on the limit rod 305 under the action of external force, and through the connection relationship between the limit block 307 and the telescopic rod 302, the limit block 307 and the limit rod 305 can limit the telescopic rod 302.

[0039] The working process of the utility model is as follows:

[0040] When the user needs to extend the transmission shaft, the user can use a screwdriver to drive the first blade 202 to rotate. Under the action of the first blade 202, the transmission rod 203 drives the rotating shaft 207 to rotate through the first bevel gear 206, so that the screw rod 204 drives the push rod 205 to move. Under the action of the push rod 205, the extension shaft 208 gradually extends, so that the transmission shaft itself is extended.

[0041] When the user needs to install the transmission shaft, the user can place one end of the transmission shaft inside the mounting hole on the machine, and then use a screwdriver to drive the second blade 303 to rotate. Under the action of the second blade 303, the second bevel gear 308 drives the threaded rods 306 on both sides to rotate in the opposite direction. Under the action of the limit rod 305 and the limit block 307, the telescopic rod 302 drives the extrusion half ring 301 to move, so that the extrusion half ring 301 matches the inner diameter of the mounting hole on the machine, which is convenient for the user to install the transmission shaft.

[0042] When both ends of the transmission shaft are vibrated, the vibration will be transmitted to the middle of the transmission shaft through the connecting plate 7. When the connecting plate 7 is vibrated, it will squeeze one side of the conduction rod 10 along the direction of the vibration. Under the action of the conduction rod 10, the slider 11 slides on the slide rail 8 and squeezes the shock-absorbing spring 9 to reduce the vibration of the connecting plate 7. At the same time, the damping cylinder 12 can prevent the shock-absorbing spring 9 from vibrating repeatedly, thereby preventing the two ends of the transmission shaft from being subjected to excessive vibration, which will cause the middle part of the transmission shaft to break.

[0043] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A lightweight transmission shaft, comprising a fixing plate (1), characterized in that: The right side of the fixed plate (1) is fixedly connected with a telescopic component (2); the upper and lower sides and the left and right sides of the fixed plate (1) are fixedly connected with slide rails (8); the outer wall of the slide rail (8) is movably connected with a slider (11); one side of the slider (11) is fixedly connected with a damping cylinder (12); the outer wall of the damping cylinder (12) is sleeved with a shock absorbing spring (9); one side of the slider (11) is movably connected with a conduction rod (10); one side of the conduction rod (10) is movably connected with a connecting plate (7); one side of the connecting plate (7) is fixedly connected with a fixed shaft (5); the left side of the fixed shaft (5) is fixedly connected with a universal joint (6); the left side of the universal joint (6) is fixedly connected with a connecting shaft (4); the left side of the connecting shaft (4) is fixedly connected with a fixed component (3); The telescopic assembly (2) comprises a telescopic shaft (201), a transmission rod (203) is movably connected to the upper part of the interior of the telescopic shaft (201), a first blade (202) is provided on the upper part of the transmission rod (203), a first bevel gear (206) is fixedly connected to the lower part of the transmission rod (203), a rotating shaft (207) is movably connected to the interior of the telescopic shaft (201), a screw rod (204) is fixedly connected to the right side of the rotating shaft (207), a push rod (205) is threadedly connected to the outer wall of the screw rod (204), and an extension shaft (208) is fixedly connected to the right side of the push rod (205).

2. A lightweight transmission shaft according to claim 1, characterized in that: A sliding structure is formed between the telescopic shaft (201) and the extension shaft (208), and a notch matching the push rod (205) is provided on the right side of the telescopic shaft (201).

3. A lightweight transmission shaft according to claim 1, characterized in that: The first blade (202) and the transmission rod (203) form an integrated structure, and a bearing is provided at the connection between the transmission rod (203) and the telescopic shaft (201).

4. A lightweight transmission shaft according to claim 1, characterized in that: A gear transmission structure is formed between the transmission rod (203) and the rotating shaft (207) via a first bevel gear (206), and the rotating shaft (207) and the screw rod (204) are coaxially arranged.

5. The lightweight transmission shaft according to claim 1, characterized in that: The fixing assembly (3) comprises a mounting shaft (304), the front end of the mounting shaft (304) is movably connected to a second blade (303), the rear end of the second blade (303) is fixedly connected to a second bevel gear (308), the interior of the mounting shaft (304) is movably connected to a threaded rod (306), the outer wall of the threaded rod (306) is threadedly connected to a telescopic rod (302), one side of the telescopic rod (302) is fixedly connected to an extrusion half ring (301), the upper interior of the mounting shaft (304) is fixedly connected to a limiting rod (305), and the outer wall of the limiting rod (305) is movably connected to a limiting block (307).

6. A lightweight transmission shaft according to claim 5, characterized in that: The extrusion half ring (301) is symmetrically arranged on the left and right sides of the installation shaft (304), and a sliding structure is formed between the extrusion half ring (301) and the installation shaft (304) via a telescopic rod (302).

7. A lightweight transmission shaft according to claim 5, characterized in that: A gear transmission structure is formed between the second blade (303) and the threaded rod (306) via the second bevel gear (308), and the threaded rod (306) is symmetrically arranged on the left and right sides of the second bevel gear (308).

8. The lightweight transmission shaft according to claim 5, characterized in that: A sliding structure is formed between the limiting rod (305) and the limiting block (307), and the limiting block (307) and the telescopic rod (302) are fixedly connected.

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