Speed measuring device of transmission shaft

Abstract

The utility model discloses a speed measuring device for a transmission shaft, which comprises an L-shaped frame and a movable frame, the movable frame is movably connected with the L-shaped frame, measuring plates are arranged on opposite sides of the movable frame and the L-shaped frame, one group of measuring plates are fixedly connected with the L-shaped frame through springs, and the other group of measuring plates are fixedly connected with the movable frame through springs. And a plurality of groups of cylinders are fixedly mounted in the measuring plate. The utility model relates to the technical field of transmission shaft speed measurement. According to the utility model, the plurality of groups of cylinders are fixedly arranged in the measuring plate, the output ends of the cylinders are fixedly connected with the speed measuring sensors, and the speed measuring sensors are matched with the transmission shaft to be measured, so that the speed capturing range of the section of the transmission shaft can be expanded and a plurality of samples can be obtained through the plurality of speed measuring sensors; the probability that speed measurement of the transmission shaft cannot be captured during high-speed rotation can be reduced, the sample capacity can be expanded through a plurality of samples, the speed measurement calculation accuracy of the transmission shaft is improved, and speed measurement of the transmission shaft is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission shaft speed measurement, in particular to a transmission shaft speed measurement device. Background Art

[0002] The driveshaft is a crucial component in the vehicle's powertrain. Consisting primarily of a shaft tube, expansion sleeve, and universal joint, it is a high-speed, low-support rotating body. Its primary function is to work with the transmission and drive axle to transmit engine power to the wheels, generating driving force for the vehicle.

[0003] Patent publication number CN115184632A discloses a speed measuring device for a transmission shaft. The patent specifically discloses "a speed measuring device for a transmission shaft, comprising a driving member, a gearbox, a transmission shaft, a screw, a screw positioning sleeve, a speed measuring assembly and a controller, wherein one end of the driving member is connected to a rotating shaft, the surface of which is sleeved with a driving gear; one end of the gearbox is connected to the driving member, and the gearbox is provided with a gear set meshing with the driving gear; the transmission shaft is rotationally connected to the gearbox, one end of the transmission shaft is provided with a driven gear meshing with the gear set, and the interior of the transmission shaft is provided with a thread along the length direction of the transmission shaft; one end of the screw is threadedly connected to the transmission shaft; one end of the screw positioning sleeve is connected to the end of the gearbox away from the driving member, and the screw positioning sleeve is provided with a through hole for the screw to pass through; the speed measuring assembly is provided on one side of the transmission shaft and is located between the gearbox and the screw positioning sleeve; the controller is provided on one side of the gearbox and is electrically connected to the speed measuring assembly." The technical solution achieves the technical effect of "the present invention can accurately measure the rotational speed of the transmission shaft, thereby obtaining the torque and power of the transmission shaft."

[0004] However, in actual use, this patent uses variable speed gears to achieve speed capture. The gears consume energy during engagement, so there are problems of inaccurate speed measurement or inability to capture instantaneous speed. There is room for improvement. Utility Model Content

[0005] The purpose of the present utility model is to provide a speed measuring device for a transmission shaft to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a speed measuring device for a transmission shaft, comprising an L-shaped frame and a movable frame, the movable frame being movably connected to the L-shaped frame, and measuring plates being provided on the side of the movable frame opposite to the L-shaped frame, wherein one group of measuring plates is fixedly connected to the L-shaped frame by springs, and the other group of measuring plates is fixedly connected to the movable frame by springs, and several groups of cylinders are fixedly installed inside the measuring plates, and the output ends of the cylinders are fixedly connected to speed sensors, and the speed sensors are adapted to the transmission shaft to be measured.

[0007] As a further solution of the present invention: a speed measuring device for a transmission shaft, wherein one side of the measuring plate is set as an arc surface, and a speed sensor for accommodating a cylinder is provided inside the arc surface.

[0008] As a further solution of the present invention: a speed measuring device for a transmission shaft further includes handles, and the handles are provided in two groups and are both fixedly connected to the L-shaped frame.

[0009] As a further solution of the present invention: a speed measuring device for a transmission shaft, the ball screw nut pair includes a screw and a screw nut, the screw is connected to an L-shaped frame, the screw nut is movably connected to the screw, and the movable frame is fixed to the screw nut.

[0010] As a further solution of the present invention: a speed measuring device for a transmission shaft, wherein the lead screw passes through one end of the L-shaped frame and is fixedly connected to a turntable, and the eccentric portion of the turntable is fixedly connected to a rotating rod.

[0011] As a further solution of the present invention: a speed measuring device for a transmission shaft, a gripping rod is fixedly connected to one side of the handle, and anti-slip grooves are provided on the outside of the gripping rod.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. Since several groups of cylinders are fixedly installed inside the measurement board, and the output ends of the cylinders are fixedly connected to speed sensors, and the speed sensors are adapted to the drive shaft being measured, multiple speed sensors can expand the speed capture range of the drive shaft section and obtain multiple samples. This not only reduces the probability of failing to capture the drive shaft speed during high-speed rotation, but also expands the sample capacity and improves the accuracy of the drive shaft speed measurement calculation through multiple samples, making it easier to perform drive shaft speed measurement operations;

[0014] 2. One set of measuring plates is fixed to the L-shaped frame by springs, and the other set of measuring plates is fixed to the movable frame by springs, so that the measuring plates can be moved and the wear of the speed sensor is reduced, thereby increasing the service life of the speed sensor. In addition, the shape of the arc surface can expand the contact area between the drive shaft and the speed sensor, thereby obtaining more test data and improving the accuracy of the speed measurement experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a speed measuring device for a transmission shaft according to the present invention;

[0016] Figure 2 This is a structural diagram of a ball screw nut pair in a speed measuring device for a transmission shaft according to the present invention;

[0017] Figure 3 This is an assembly diagram of a measuring plate, a cylinder, and a speed sensor in a speed measuring device for a transmission shaft according to the present invention;

[0018] In the figure: 1. L-shaped frame; 2. Movable frame; 3. Measuring plate; 31. Arc surface; 32. Speed ​​measuring hole; 4. Ball screw nut pair; 41. Screw; 42. Screw nut; 5. Turntable; 51. Turning rod; 6. Handle; 61. Gripping rod; 7. Spring; 8. Cylinder; 9. Speed ​​sensor. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or connected in an integral manner; they can be mechanically connected or electrically connected; they can be directly connected, indirectly connected through an intermediate medium, or they can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The following describes the embodiments of the present invention based on its overall structure.

[0021] In an embodiment of the present utility model, a speed measuring device for a transmission shaft includes an L-shaped frame 1 and a movable frame 2, the movable frame 2 is movably connected to the L-shaped frame 1, and a measuring plate 3 is provided on the side of the movable frame 2 opposite to the L-shaped frame 1, wherein one group of measuring plates 3 is fixedly connected to the L-shaped frame 1 by a spring 7, and the other group of measuring plates 3 is fixedly connected to the movable frame 2 by a spring 7, and several groups of cylinders 8 are fixedly installed inside the measuring plates 3, and the output end of the cylinder 8 is fixedly connected to a speed sensor 9, and the speed sensor 9 is adapted to the transmission shaft to be measured.

[0022] See also Figure 1 、 Figure 2 and Figure 3 Since several groups of cylinders 8 are fixedly installed inside the measuring plate 3, the output ends of the cylinders 8 are fixedly connected to speed sensors 9, and the speed sensors 9 are adapted to the drive shaft to be measured, the speed capture range of the drive shaft section can be expanded through multiple speed sensors 9 and multiple samples can be obtained. This not only reduces the probability of failing to capture the speed of the drive shaft during high-speed rotation, but also expands the sample capacity and improves the accuracy of the speed measurement calculation of the drive shaft through multiple samples, making it easier to carry out the speed measurement operation of the drive shaft.

[0023] In addition, one group of measuring plates 3 is fixed to the L-shaped frame 1 through springs 7, and the other group of measuring plates 3 is fixed to the movable frame 2 through springs 7, so that the measuring plates 3 can be moved and the wear of the speed sensor 9 is reduced, thereby improving the service life of the speed sensor 9. In addition, the shape of the arc surface 31 can expand the contact area between the transmission shaft and the speed sensor 9, thereby obtaining more detection data and improving the accuracy of the speed measurement experiment.

[0024] In another embodiment of the present invention, one side of the measuring plate 3 is configured as an arc surface 31 , and a speed sensor 9 for accommodating the cylinder 8 is provided inside the arc surface 31 .

[0025] Other embodiments of the present invention further include handles 6 , wherein two groups of handles 6 are provided and both are fixedly connected to the L-shaped frame 1 .

[0026] Other embodiments of the present invention: the ball screw nut pair 4 includes a screw 41 and a screw nut 42, the screw 41 is connected to the L-shaped frame 1, the screw nut 42 is movably connected to the screw 41, and the movable frame 2 is fixed to the L-shaped frame 1.

[0027] In another embodiment of the present invention, one end of the lead screw 41 passing through the L-shaped frame 1 is fixedly connected to a turntable 5 , and a rotating rod 51 is fixedly connected to an eccentric portion of the turntable 5 .

[0028] In another embodiment of the present invention, a gripping rod 61 is fixedly connected to one side of the handle 6 , and anti-slip grooves are provided on the outside of the gripping rod 61 .

[0029] The working principle of the present invention is: since several groups of cylinders 8 are fixedly installed inside the measuring plate 3, the output ends of the cylinders 8 are fixedly connected to speed sensors 9, and the speed sensors 9 are adapted to the drive shaft to be measured, the speed capture range of the drive shaft section can be expanded through multiple speed sensors 9 and multiple samples can be obtained, which not only reduces the probability of failing to capture the speed of the drive shaft during high-speed rotation, but also expands the sample capacity through multiple samples and improves the speed measurement calculation accuracy of the drive shaft, thereby facilitating the speed measurement operation of the drive shaft.

[0030] In addition, one group of measuring plates 3 is fixed to the L-shaped frame 1 through springs 7, and the other group of measuring plates 3 is fixed to the movable frame 2 through springs 7, so that the measuring plates 3 can be moved and the wear of the speed sensor 9 is reduced, thereby improving the service life of the speed sensor 9. In addition, the shape of the arc surface 31 can expand the contact area between the transmission shaft and the speed sensor 9, thereby obtaining more detection data and improving the accuracy of the speed measurement experiment.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A transmission shaft speed measuring device, characterized in that , comprising an L-shaped frame (1) and a movable frame (2), wherein the movable frame (2) is movably connected to the L-shaped frame (1), and a measuring plate (3) is provided on a side of the movable frame (2) opposite to the L-shaped frame (1), wherein one group of measuring plates (3) is fixedly connected to the L-shaped frame (1) through a spring (7), and the other group of measuring plates (3) is fixedly connected to the movable frame (2) through a spring (7), and a plurality of groups of cylinders (8) are fixedly installed inside the measuring plates (3), and a speed sensor (9) is fixedly connected to the output end of the cylinder (8), and the speed sensor (9) is adapted to the transmission shaft to be measured.

2. The transmission shaft speed measuring device according to claim 1, characterized in that: One side of the measuring plate (3) is provided as an arc surface (31), and a speed sensor (9) for accommodating the cylinder (8) is provided inside the arc surface (31).

3. The transmission shaft speed measuring device according to claim 2, characterized in that: It also includes handles (6), which are provided in two groups and are both fixedly connected to the L-shaped frame (1).

4. The transmission shaft speed measuring device according to claim 3, characterized in that: It also includes a ball screw nut pair, the ball screw nut pair (4) including a screw (41) and a screw nut (42), the screw (41) is connected to the L-shaped frame (1), the screw nut (42) is movably connected to the screw (41), and the movable frame (2) is fixedly connected to the screw nut (42).

5. The transmission shaft speed measuring device according to claim 4, characterized in that: One end of the lead screw (41) passing through the L-shaped frame (1) is fixedly connected to a turntable (5), and an eccentric portion of the turntable (5) is fixedly connected to a rotating rod (51).

6. The transmission shaft speed measuring device according to claim 5, characterized in that: A gripping rod (61) is fixedly connected to one side of the handle (6), and the outside of the gripping rod (61) is provided with anti-slip grooves.

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