Shaft tube of special-shaped transmission shaft

Abstract

The utility model discloses a shaft tube of a special-shaped transmission shaft, which relates to the field of transmission shaft tubes, and comprises a main shaft tube, a sliding spline shaft, a hydraulic control system and a mounting and clamping mechanism, and the end part of the sliding spline shaft is arranged in the main shaft tube in a sliding and penetrating manner; a hydraulic push rod is arranged at the right end of the sliding spline shaft, a right piston is connected to the output end of the hydraulic push rod, and a hydraulic oil cavity is formed between the right piston and a left piston connected to the right end of the sliding spline shaft. When the universal joint is assembled, hydraulic oil in the hydraulic oil cavity is pressed into the oil return cavity, the two movable clamping pieces are extruded to move towards the middle, the clamping columns on the movable clamping pieces are clamped in the mounting clamping grooves in the universal joint, the universal joint is clamped and mounted, rapid assembly of the universal joint can be achieved, disassembly and replacement are facilitated when the universal joint or the shaft tube is damaged, and cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission shaft tubes, and in particular relates to a special-shaped transmission shaft tube. Background Art

[0002] The drive shaft is an important component for transmitting power in the automobile transmission system. Its function is to transmit the power of the engine to the wheels together with the gearbox and drive axle, so that the car generates driving force. The drive shaft is composed of a shaft tube, a telescopic sleeve (telescopic spline) and a universal joint. The telescopic sleeve can automatically adjust the change in the distance between the transmission and the drive axle. The universal joint ensures the change in the angle between the transmission output shaft and the drive axle input shaft, and realizes the equal angular speed transmission of the two shafts. The shaft tube is used to connect the universal joint and the sliding spline. Since the actual working conditions of the automobile drive shaft are relatively complicated, it must withstand randomly changing alternating loads during work, as well as starting, braking and impact loads caused by road conditions. Therefore, the drive shaft tube must have good strength and plasticity.

[0003] Most of the existing drive shafts are installed by welding the universal joint and the shaft tube. High precision must be ensured during welding, and the installation method is relatively cumbersome. In addition, when one of the universal joint and the shaft tube is damaged and difficult to repair, the entire drive shaft needs to be scrapped, which increases the cost of using the product. In addition, the torque of the drive shaft is currently adjusted by telescopic sleeves and telescopic splines, which have weak buffering capacity and are prone to wear, affecting the service life. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a special-shaped transmission shaft tube, which can be conveniently assembled with a universal joint and can also increase the service life of the transmission shaft.

[0005] The utility model solves the technical problem by adopting the following scheme: a special-shaped transmission shaft tube, comprising a main shaft tube and a sliding spline shaft, the end of the sliding spline shaft is slidably arranged in the main shaft tube, and also comprising a hydraulic control system and an installation clamping mechanism, wherein the hydraulic control system comprises a hydraulic push rod arranged inside the main shaft tube, the output end of the hydraulic push rod is connected with a right piston, and a hydraulic oil chamber is formed between the right piston and a left piston connected to the right end of the sliding spline shaft; the installation clamping mechanism comprises a mounting member fixed to the left end of the sliding spline shaft, an active chamber is arranged inside the mounting member, and active clamps are arranged up and down in the mounting member, an oil return chamber is formed between the inner end of the active clamp and the active chamber, the oil return chamber is connected to the hydraulic oil chamber through an oil return pipe, and an electromagnetic valve is arranged on the oil return pipe, and a guide groove corresponding to the active clamp is opened on the mounting member, a baffle matching the guide groove is fixed on the active clamp, the baffle is used to seal the oil return chamber, and a spring is arranged between adjacent active clamps, and a clamping column is fixed inwardly at the free end of the upper and lower active clamps.

[0006] Furthermore, movable empty grooves corresponding to the baffle plates are opened in the upper and lower parts of the guide groove, and the baffle plates are matched with the sealing movably sleeved in the movable empty grooves to achieve sealing of the oil return chamber.

[0007] Furthermore, the universal joint includes a universal joint fork arranged on the left side of the mounting member and an active joint movably sleeved on the universal joint fork. Mounting slots corresponding to the clamping columns are symmetrically opened on the surface of the universal joint fork, and the clamping columns can be fixedly clamped in the mounting slots.

[0008] Furthermore, two groups of oil pipe fixing sleeves are symmetrically fixedly connected to the surface of the main shaft tube, the oil return pipe fixing sleeve is connected to the oil pipe fixing sleeve, and the middle part of the oil return pipe is set as a telescopic conduit structure.

[0009] Furthermore, the spring is located in the active cavity.

[0010] Furthermore, a control fixing platform is fixedly sleeved in the main shaft tube, and a hydraulic push rod is connected to the left side of the control fixing platform.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model can realize the rapid assembly of the universal joint by arranging the hydraulic control system and the installation clamping mechanism. When assembling the universal joint, the hydraulic push rod is controlled to push the right piston to move left, the hydraulic oil in the hydraulic oil chamber is pressed into the oil return chamber through the opened electromagnetic valve and the oil return pipe, and the two movable clamps are squeezed to move toward the middle, so that the clamping column on the movable clamp can be clamped in the installation clamping groove on the universal joint, the universal joint is clamped and installed, the rapid assembly of the universal joint is realized, the stability after assembly is high, and it is convenient to install it when the universal joint or the shaft tube is damaged. Both can be disassembled for replacement and repair, which saves costs. At the same time, the hydraulic oil will push the left piston outward to move the sliding spline shaft outward. When the installation clamping mechanism completes the fixed clamping of the universal joint, the solenoid valve is controlled to close. Then, the sliding spline shaft can be controlled to be adjusted left and right in real time through the operation of the hydraulic push rod to meet the needs of the transmission shaft torque working condition and to improve the buffering effect between the main shaft tube and the sliding spline shaft. The assembly of the universal joint and the adaptive adjustment of the sliding spline shaft can be linked together through the hydraulic control system to achieve good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the installation and fixing mechanism of the utility model;

[0015] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0016] Figure 4 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 5 It is a front view structure diagram of the present utility model.

[0018] In the figure: 1. spindle tube; 2. hydraulic control system; 201. control fixing table; 202. hydraulic push rod; 203. right piston; 204. hydraulic oil chamber; 205. solenoid valve; 206. oil return pipe; 207. oil pipe fixing sleeve; 208. left piston; 3. installation clamping mechanism; 301. mounting part; 302. oil return chamber; 303. movable clamping part; 304. clamping column; 305. movable empty slot; 306. baffle; 307. sealing gasket; 308. spring; 309. guide groove; 4. universal joint; 401. universal joint fork; 402. movable joint; 403. installation clamping slot; 5. sliding spline shaft. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] See also Figure 1-5 The utility model provides a technical solution for a special-shaped transmission shaft tube:

[0021] Embodiment 1:

[0022] according to Figure 1 As shown, it includes a spindle tube 1 and a sliding spline shaft 5 movably sleeved at the end of the spindle tube 1, a hydraulic control system 2 is provided in the spindle tube 1, a control fixing platform 201 is fixedly sleeved in the spindle tube 1, a hydraulic push rod 202 is connected to the left side of the control fixing platform 201, the output end of the hydraulic push rod 202 and the right end of the sliding spline shaft 5 are respectively connected to a right piston 203 and a left piston 208, a hydraulic oil chamber 204 is formed between the right piston 203 and the left piston 208, and a mounting clamping mechanism 3 is provided on the right side of the hydraulic control system 2, as shown in FIG. Figure 2The left end of the sliding spline shaft 5 is fixedly connected to a mounting piece 301 with a movable cavity inside, and two movable clamps 303 are symmetrically arranged in the upper and lower parts of the mounting piece 301, and a spring 308 is connected between the two movable clamps 303, and the spring 308 is in the movable cavity. The inner end of the movable clamp 303 and the upper and lower parts of the movable cavity cooperate to form an oil return cavity 302, and the oil return cavity 302 is connected to the hydraulic oil cavity 204 through the oil return pipe 206, and the oil return pipe 206 is provided with a solenoid valve 205, and a guide groove 309 corresponding to the movable clamp 303 is opened on the mounting piece 301, and the movable clamp 303 is movably sleeved in the guide groove 309, and movable empty grooves 305 are opened in the upper and lower parts of the guide groove 309, and the upper and lower surfaces of the movable clamp 303 are fixedly connected and movably sleeved in the movable empty groove 305 The baffle 306 in the middle, the left and right surfaces of the baffle 306 are provided with sealing gaskets 307, and corresponding to the structure of the movable empty groove 305, can realize the sealing of the return oil chamber 302, the free ends of the movable clamps 303 arranged above and below are fixed with clamping columns 304 inwardly, the outer end of the spindle tube 1 is provided with a universal joint 4, the universal joint 4 includes a universal joint 4 fork overlapped on the left side of the mounting member 301 and an active joint 402 movably sleeved with the universal joint 4 fork, the surface of the universal joint 4 fork is provided with a mounting groove 403 corresponding to the clamping column 304, the clamping column 304 can be fixedly clamped in the mounting groove 403, so as to realize the assembly of the mounting member 301 and the universal joint 4, and at the same time, through the close cooperation of the two groups of clamping columns 304 and the mounting groove 403, the stability of the connection and operation between the mounting member 301 and the universal joint 4 can be guaranteed.

[0023] In specific use, the utility model provides a special-shaped transmission shaft tube. When assembling the universal joint 4, first control the hydraulic push rod 202 to operate, and at the same time the solenoid valve 205 is in the open state. The hydraulic push rod 202 pushes the right piston 203 to move leftward, and the hydraulic oil in the hydraulic oil chamber 204 is pressed into the oil return chamber 302 through the oil return pipe 206. The hydraulic oil entering the oil return chamber 302 gradually increases, pushing the movable clamp 303 to move toward the middle, so that the clamp column 304 is clamped in the installation clamping groove 403 on the fork of the universal joint 4. , the universal joint 4 is quickly clamped and installed. When the output end of the hydraulic push rod 202 is pushed to the left, the hydraulic oil will push the left piston 208 to the left, so that the sliding spline shaft 5 moves to the outer end. When the universal joint 4 is assembled and installed, the solenoid valve 205 is controlled to be closed. When the transmission shaft is working, by controlling the operation of the hydraulic push rod 202, the left piston 208 and the right piston 203 can be driven to move left and right, and the sliding spline shaft 5 can be controlled to perform real-time left and right adaptation adjustment to ensure that it can always meet the needs of the transmission shaft torque working condition.

[0024] Embodiment 2:

[0025] On the basis of the first embodiment, Figure 5As shown, two groups of oil pipe fixing sleeves 207 are symmetrically connected to the surface of the main shaft tube 1, and the return oil pipe 206 is arranged on the side of the main shaft tube 1 through the oil pipe fixing sleeve 207, and the middle part of the return oil pipe 206 is arranged as a telescopic guide tube structure, which can prevent the return oil pipe 206 from being pulled off or damaged when the mounting part 301 moves left and right; in addition, the return oil pipeline can also be arranged as a structure connected to the two groups of return oil pipes 206 through a main oil pipe, and the solenoid valve 205 is arranged on the main oil pipe, which can save costs.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A special-shaped transmission shaft tube, comprising a main shaft tube and a sliding spline shaft, wherein the end of the sliding spline shaft is slidably inserted into the main shaft tube, and a universal joint is provided at the outer end of the main shaft tube, characterized in that: The camshaft is an axial piston which is connected to the piston rod of the hydraulic cylinder, and a piston rod is connected to the camshaft at the camshaft end to form an oil return chamber.

2. The special-shaped transmission shaft tube according to claim 1, characterized in that: Active empty grooves corresponding to the baffle plates are provided in the upper and lower parts of the guide groove, and the baffle plates are matched with sealing movably sleeved in the active empty grooves to seal the oil return chamber.

3. The special-shaped transmission shaft tube according to claim 1, characterized in that: The universal joint comprises a universal joint fork arranged on the left side of the mounting member and an active joint movably sleeved on the universal joint fork. The surface of the universal joint fork is symmetrically provided with mounting slots corresponding to the clamping columns, and the clamping columns can be fixedly clamped in the mounting slots.

4. The special-shaped transmission shaft tube according to claim 1, characterized in that: Two groups of oil pipe fixing sleeves are symmetrically fixedly connected on the surface of the main shaft tube, the oil return pipe fixing sleeve is connected in the oil pipe fixing sleeve, and the middle part of the oil return pipe is set as a telescopic conduit structure.

5. The special-shaped transmission shaft tube according to claim 1, characterized in that: The spring is located in the active cavity.

6. The special-shaped transmission shaft tube according to claim 1, characterized in that: A control fixing platform is fixedly sleeved in the main shaft tube, and a hydraulic push rod is connected to the left side of the control fixing platform.

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