Rotating speed synchronizing mechanism capable of adjusting front shaft and rear shaft

Abstract

The rotating speed synchronizing mechanism comprises a base, a front roller assembly and a rear roller assembly are installed on the two sides of the top of the base in a sliding mode, a movable base is installed on one side of the bottom of each of the front roller assembly and the rear roller assembly, and a power transmission mechanism is installed in each movable base. One side of the power transmission mechanism is connected with the front roller assembly and the rear roller assembly, the other side of the power transmission mechanism is connected with spline shaft modules, and a coupler is installed between the spline shaft modules on the two sides. By arranging the movable base, the power transmission mechanism, the spline shaft module and the coupler, four-wheel synchronization is realized, front wheels and rear wheels can rotate synchronously during testing, and the phenomenon of speed difference is avoided, so that an automobile electronic system cannot give an alarm, the wheelbase can be adjusted under the condition that power transmission is stable, and the testing efficiency is improved. And the use effect is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy vehicle detection, and particularly relates to a rotational speed synchronization mechanism capable of adjusting front and rear axles. Background Art

[0002] With the introduction of new energy vehicle testing standards, testing agencies in the automotive market need to add or renovate existing vehicle testing lines, upgrading from two-wheel drive chassis dynamometers to four-wheel drive chassis dynamometers, and the market demand is large.

[0003] Based on market demand, it is necessary to develop corresponding new energy vehicle four-wheel drive chassis dynamometers. Chassis dynamometers are special measuring equipment used to measure the output power, torque (or driving force) and rotational speed (or speed) of vehicle drive wheels.

[0004] However, existing four-wheel drive chassis dynamometers cannot achieve four-wheel synchronization during use, resulting in the front and rear wheels rotating independently when testing four-wheel drive vehicles. This causes a speed difference, triggering an alarm in the vehicle's electronic system and affecting test accuracy. In addition, since the models and wheelbases of new energy vehicles on the current market are different, four-wheel drive chassis dynamometers are also required to have a wheelbase adjustment function. Utility Model Content

[0005] In view of the problems raised by the above background technology, the purpose of the present utility model is to provide a speed synchronization mechanism that can adjust the front and rear axles.

[0006] In order to achieve the above technical objectives, the technical solutions adopted by this utility model are as follows:

[0007] A speed synchronization mechanism for adjusting the front and rear axles includes a base, a front roller assembly and a rear roller assembly are slidably installed on both sides of the top of the base, a movable base is installed on one side of the bottom of the front roller assembly and the rear roller assembly, a power transmission mechanism is installed in the movable base, one side of the power transmission mechanism is connected to the front roller assembly and the rear roller assembly, and the other side of the power transmission mechanism is connected to a spline shaft module, and a coupling is installed between the spline shaft modules on both sides.

[0008] The power transmission mechanism further defines a first transmission wheel connected to the front roller assembly and the rear roller assembly, the first transmission wheel being connected to a timing belt, the other side of the timing belt being connected to a second transmission wheel, the second transmission wheel being connected to a converter, the output end of the converter being connected to a third transmission wheel, the third transmission wheel being connected to a transmission belt, the other side of the transmission belt being connected to a fourth transmission wheel, the fourth transmission wheel being connected to a spline shaft module. This structural design facilitates power transmission, thereby ensuring that the front and rear roller assemblies have the same speed.

[0009] The spline shaft module further defines a spline shaft comprising a spline shaft, a spline sleeve slidably connected to the spline shaft, the spline sleeve being mounted within the fourth transmission wheel, support bearing seats being mounted on both sides of the spline shaft, and the spline shafts on both sides being connected to both ends of a coupling. This structural design achieves the transmission of rotational power.

[0010] It is further defined that bearings are installed on both sides of the spline sleeve, and the bearings are installed on the movable base. Such a structural design ensures that the spline sleeve can be stably installed and rotated.

[0011] It is further defined that a bracket is fixedly mounted on the bottom of the supporting bearing seat, and the other side of the bracket is locked and mounted on the side wall of the base. Such a structural design is convenient for installation and use.

[0012] The beneficial effects of the present invention are as follows: the present invention realizes four-wheel synchronization by setting a movable base, a power transmission mechanism, a spline shaft module and a coupling. During testing, the front wheels and the rear wheels can rotate synchronously without speed difference, thereby not causing an alarm in the automobile electronic system. In addition, the wheelbase can be adjusted while the power transmission is stable, thereby further improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention can be further described by way of non-limiting examples given in the accompanying drawings;

[0014] Figure 1 This is a schematic diagram of the shaft side structure of an adjustable speed synchronization mechanism for front and rear axles according to an embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the shaft side structure of a power transmission mechanism of a speed synchronization mechanism capable of adjusting the front and rear axles according to an embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of a power transmission mechanism of a speed synchronization mechanism capable of adjusting the front and rear axles according to an embodiment of the utility model;

[0017] Figure 4 This is an enlarged structural diagram of point A of a speed synchronization mechanism capable of adjusting the front and rear axles according to an embodiment of the present utility model;

[0018] The main component symbols are described as follows:

[0019] Base 1, front roller assembly 2, rear roller assembly 3, mobile base 4, power transmission mechanism 5, spline shaft module 6, coupling 7, first transmission wheel 8, synchronous belt 9, second transmission wheel 10, converter 11, third transmission wheel 12, transmission belt 13, fourth transmission wheel 14, spline shaft 15, spline sleeve 16, support bearing seat 17, bearing 18, bracket 19. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0021] Example 1, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, a speed synchronization mechanism for adjusting the front and rear axles is provided, wherein a front roller assembly 2 and a rear roller assembly 3 are slidably installed on both sides of the top of the base 1, and a movable base 4 is installed on one side of the bottom of the front roller assembly 2 and the rear roller assembly 3, and a power transmission mechanism 5 is installed in the movable base 4, and one side of the power transmission mechanism 5 is connected to the front roller assembly 2 and the rear roller assembly 3, and the other side of the power transmission mechanism 5 is connected to a spline shaft module 6, and a coupling 7 is installed between the spline shaft modules 6 on both sides.

[0022] In this embodiment, the power transmission mechanism 5 is composed of a transmission wheel assembly, which transmits the rotational power of the front drum assembly 2 and the rear drum assembly 3 to the spline shaft module 6;

[0023] The movable base 4 can move forward and backward to adjust the wheelbase of the front and rear axles;

[0024] The spline shaft module 6 is driven by the spline sleeve to achieve the transmission of rotational power, which can be transmitted to the spline shaft and can slide on the spline shaft to adjust the wheelbase and achieve speed synchronization;

[0025] The coupling 7 connects the front and rear spline shafts to compensate for the offset between the spline shafts on both sides due to inaccurate manufacturing and installation, deformation during operation, or thermal expansion.

[0026] Example 2, as Figure 2 and Figure 3 As shown, this embodiment adds the following structure on the basis of embodiment 1, the power transmission mechanism 5 includes a first transmission wheel 8 connected to the front roller assembly 2 and the rear roller assembly 3, the first transmission wheel 8 is connected to a synchronous belt 9, the other side of the synchronous belt 9 is connected to a second transmission wheel 10, the second transmission wheel 10 is connected to a converter 11, the output end of the converter 11 is connected to a third transmission wheel 12, the third transmission wheel 12 is connected to a transmission belt 13, the other side of the transmission belt 13 is connected to a fourth transmission wheel 14, and the fourth transmission wheel 14 is connected to the spline shaft module 6.

[0027] In this embodiment, when in use, the rotational power generated by the front drum assembly 2 and the rear drum assembly 3 is transmitted to the first transmission wheel 8, causing the first transmission wheel 8 to rotate, thereby causing the first transmission wheel 8 to drive the synchronous belt 9, and the synchronous belt 9 drives the second transmission wheel 10 on the other side to rotate, and the second transmission wheel 10 outputs the rotational power and is converted by the converter 11, so that the converter 11 drives the third transmission wheel 12, the third transmission wheel 12 drives the transmission belt 13, the transmission belt 13 drives the fourth transmission wheel 14 to rotate, and the fourth transmission wheel 14 drives the spline shaft module 6 to rotate, thereby achieving the effect of speed synchronization.

[0028] Example 3, as Figure 2 and Figure 4 As shown, this embodiment adds the following structure on the basis of embodiment 1, the spline shaft module 6 includes a spline shaft 15, the spline shaft 15 is slidably connected to a spline sleeve 16, the spline sleeve 16 is installed in the fourth transmission wheel 14, and support bearing seats 17 are installed on both sides of the spline shaft 15. The spline shafts 15 on both sides are connected to the two ends of the coupling 7.

[0029] In this embodiment, the fourth transmission wheel 14 drives the spline sleeve 16 to rotate, and the spline sleeve 16 drives the spline shaft 15 to rotate along the support bearing seat 17, thereby achieving the transmission of rotational power. During rotation, the spline sleeve 16 can also be moved so that the spline sleeve 16 moves along the spline shaft 15, thereby achieving the effect of adjusting the wheelbase at the same time.

[0030] Among them, the surface of the spline shaft 15 is provided with a number of evenly arranged spline grooves, and the spline sleeve 16 is provided with spline teeth matching the spline grooves. Through the cooperation between the spline teeth and the spline grooves, the spline sleeve 16 can move along the spline shaft 15 while achieving a rotation effect.

[0031] Example 4, as Figure 2 and Figure 4 As shown, this embodiment adds the following structure on the basis of embodiment 1: bearings 18 are installed on both sides of the spline sleeve 16, and the bearings 18 are installed on the movable base 4.

[0032] In this embodiment, when the spline sleeve 16 rotates, both sides of the spline sleeve 16 rotate in the bearing 18, thereby ensuring that the spline sleeve 16 can rotate smoothly and stably, and the bearing 18 is installed on the movable base 4, further improving the effect of the stable movement of the spline sleeve 16.

[0033] Example 5, as Figure 1 and Figure 2 As shown, this embodiment adds the following structure on the basis of embodiment 1: a bracket 19 is fixedly installed on the bottom of the supporting bearing seat 17, and the other side of the bracket 19 is locked and installed on the side wall of the base 1.

[0034] In this embodiment, during installation, the bracket 19 is provided and the support bearing seat 17 is locked and installed on the bracket 19 to ensure that the support bearing seat 17 can stably support the spline shaft 15 to move.

[0035] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by persons skilled in the art without departing from the spirit and technical principles disclosed herein shall be covered by the claims of the present invention.

Claims

1. A speed synchronization mechanism capable of adjusting the front and rear axles, characterized by: The invention comprises a base (1), a front roller assembly (2) and a rear roller assembly (3) are slidably mounted on both sides of the top of the base (1), a movable base (4) is mounted on one side of the bottom of each of the front roller assembly (2) and the rear roller assembly (3), a power transmission mechanism (5) is mounted in the movable base (4), one side of the power transmission mechanism (5) is connected to the front roller assembly (2) and the rear roller assembly (3), the other side of the power transmission mechanism (5) is connected to a spline shaft module (6), and a coupling (7) is mounted between the spline shaft modules (6) on both sides.

2. The adjustable speed synchronization mechanism for front and rear axles according to claim 1, characterized in that: The power transmission mechanism (5) comprises a first transmission wheel (8) connected to the front roller assembly (2) and the rear roller assembly (3); the first transmission wheel (8) is connected to a synchronous belt (9); the other side of the synchronous belt (9) is connected to a second transmission wheel (10); the second transmission wheel (10) is connected to a converter (11); the output end of the converter (11) is connected to a third transmission wheel (12); the third transmission wheel (12) is connected to a transmission belt (13); the other side of the transmission belt (13) is connected to a fourth transmission wheel (14); the fourth transmission wheel (14) is connected to a spline shaft module (6).

3. The adjustable speed synchronization mechanism for front and rear axles according to claim 2, characterized in that: The spline shaft module (6) includes a spline shaft (15), the spline shaft (15) is slidably connected to a spline sleeve (16), the spline sleeve (16) is installed in the fourth transmission wheel (14), and support bearing seats (17) are installed on both sides of the spline shaft (15). The spline shafts (15) on both sides are connected to the two ends of the coupling (7).

4. The adjustable speed synchronization mechanism for front and rear axles according to claim 3, characterized in that: Bearings (18) are installed on both sides of the spline sleeve (16), and the bearings (18) are installed on the movable base (4).

5. The adjustable speed synchronization mechanism for front and rear axles according to claim 4, characterized in that: A bracket (19) is fixedly mounted on the bottom of the support bearing seat (17), and the other side of the bracket (19) is locked and mounted on the side wall of the base (1).

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