JP4381627B2 - Dynamic balance testing machine for propeller shaft - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dynamic balance tester for a propeller shaft, and more particularly, to a dynamic balance tester that can be easily replaced according to the type of propeller shaft.
[0002]
[Prior art]
2. Description of the Related Art A propeller shaft dynamic balance testing machine is provided with a chucking device for chucking a propeller shaft to be tested on a measurement stand.
An example of a conventional chucking device is disclosed in Japanese Patent No. 2963725.
According to the chucking device described in this prior patent, it is possible to perform chucking even if the type of the propeller shaft changes and the size and shape of the flange yoke change. That is, the prior art discloses a chucking device that can chuck different types of flange yokes.
[0003]
Japanese Patent No. 3025320 discloses a chuck device in which a flange yoke or a sleeve yoke chuck unit is inserted into a fixed outer cylinder and incorporated to fix the flange yoke or sleeve yoke.
[0004]
[Problems to be solved by the invention]
Both ends of the propeller shaft are normally flange yokes, and one flange yoke is connected to the engine side and the other flange yoke is connected to the drive wheel side. However, some propeller shafts have a flange yoke at one end and a sleeve yoke at the other end.
The former prior art shows a device that can be chucked even if the shape and size of the flange yoke changes, but if the flange yoke is changed to a sleeve yoke, the sleeve yoke should be chucked. The chucking device (or chucking mechanism) had to be replaced. Conventionally, the chucking device must be replaced with the spindle provided on the measurement base, which requires a long time for the replacement work and requires skill for the replacement work.
[0005]
Therefore, two spindles are mounted on the measurement base, and a flange yoke chucking device and a sleeve yoke chucking device are incorporated in each spindle, and the measurement base is installed in the horizontal direction (perpendicular to the axial direction of the propeller shaft to be measured). And a chucking device that is selected and used has been put to practical use.
However, the above-described prior art requires a large-scale mechanism for displacing the measurement platform itself, and there is a problem that the entire dynamic balance testing machine becomes large and the configuration is complicated.
[0006]
The latter prior art also has a problem that it takes time to change the configuration for the flange yoke and the sleeve yoke.
The present invention has been made based on such a background. When the end of the propeller shaft to be subjected to the dynamic balance test is a flange yoke, the flange yoke can be chucked, and the end of the propeller shaft is a sleeve yoke. Provides a dynamic balance testing machine for propeller shafts that allows chucking of its sleeve yoke by interposing an adapter, thereby enabling dynamic balance testing of various types of propeller shafts by simple changeover. The purpose is to do.
[0007]
[Means for Solving the Problems and Effects of the Invention]
According to the first aspect of the present invention, there is provided a measuring stand provided with a chucking device for a flange yoke for chucking a flange yoke of a propeller shaft for performing a dynamic balance test, a detachable attachment to the chucking device, and a propeller A sleeve yoke adapter capable of chucking a sleeve yoke of the shaft, and the sleeve yoke adapter includes a disk-shaped flange and a guide tube protruding from the flange surface, and the back surface of the flange is the chucking member. The chucking device has a fixing portion fixed to the device and a displacement portion for sandwiching the sleeve yoke disposed in the guide tube of the fixing portion, and the chucking device swings in the approaching direction to chuck the flange yoke. at least two chuck jaws for fixing of the adapter for the sleeve yoke A displacement portion for clamping the sleeve yoke by performing a closing operation for swinging the at least two chuck claws in the approaching direction and an opening operation for swinging in the opposite direction while being fixed to the chucking device. The propeller shaft dynamic balance testing machine is characterized in that the sleeve yoke can be chucked and unchucked by displacing the sleeve .
[0009]
The dynamic balance testing machine according to the present invention is provided with a flange yoke chucking device for chucking a flange yoke of a propeller shaft on a measurement base. When both ends of the propeller shaft to be subjected to the dynamic balance test are flange yokes, the flange yokes are chucked by a chucking device provided on the measurement base. On the other hand, when one end of the propeller shaft is not a flange yoke but a sleeve yoke, a sleeve yoke adapter is attached to the flange yoke chucking device. This mounting can be easily performed using a chuck claw provided in the chucking device. That is, the chucking device has at least two chuck claws for chucking the flange yoke. The adapter is chucked by this chuck claw. In this state, the adapter may be fixed to the chucking device with a bolt or the like. Therefore, positioning of the adapter at the time of attachment can be performed easily and accurately. Therefore, the adapter can be fixed in a short time.
[0010]
The adapter includes a mechanism for fixing (chucking) the sleeve yoke in conjunction with chucking with the chuck claw of the chucking device. This mechanism can be realized by a split collet and a guide tube, for example.
Therefore, the sleeve yoke of the propeller shaft can be chucked by operating the chuck / unchuck of the adapter using the chuck claw of the chucking device for flange yoke originally provided on the measurement base.
[0011]
According to this invention, according to the type of propeller shaft, it is only necessary to attach a sleeve yoke adapter to the chucking device of the measurement stand, making it easy to change the setup and realizing a wide range of applicable dynamic balance testing machines for propeller shafts. can do. Especially for propeller shafts equipped with a flange yoke, it can be used without any pre-treatment, and it is only necessary to attach an adapter when attaching the sleeve yoke, so it does not take time to change the setup. The configuration is also simple.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a front view of a propeller shaft dynamic balance testing machine according to an embodiment of the present invention. In the figure, 1 is a bed, 2 is a right measurement frame, 3 is a chucking device for fixing the right end of the propeller shaft, and 4 is a handle for sliding the right measurement frame 2 in the left-right direction along the upper surface of the bed 1. Reference numeral 5 denotes a left measurement gantry, and the left measurement gantry 5 has a configuration that is a feature of the present invention. A chucking device 20 for fixing the left end of the propeller shaft and an operation device 7 for operating the chucking device 20 are attached to the left measurement base 5. A drive device 9 is connected to the left side of the operation device 7 via a universal joint 8, and a main operation panel 10 and a measurement circuit 11 of a dynamic balance test machine are provided.
[0013]
To measure the dynamic balance of the propeller shaft, one end of the propeller shaft (usually the side connected to the engine side) is chucked by the chucking device 3, and the other end (usually the side connected to the differential gear) is It is chucked by the chucking device 20.
2A and 2B show an example of a propeller shaft that performs a dynamic balance test.
Some propeller shafts have flange yokes 13 and 14 at their right and left ends, as shown in FIG. 2A. Further, as shown in FIG. 2B, a flange yoke 13 is attached to the right end, but a sleeve yoke 15 is attached to the left end.
[0014]
This embodiment is a dynamic balance testing machine that can hold the propeller shaft shown in FIG. 2A or the propeller shaft shown in FIG. 2B and can perform a dynamic balance test of these propeller shafts. .
FIG. 3 schematically shows the concept of this embodiment. FIG. 3A is a drawing in which the left measurement base 5 and the chucking device 20 shown in FIG. 1 are taken out and drawn, and FIG. 3B shows a state in which the sleeve yoke adapter 21 is attached to the chucking device 20.
[0015]
When performing a dynamic balance test of a propeller shaft having a shape as shown in FIG. 2A (both ends are flange yokes), the left measurement base 5 is used in the state shown in FIG. 3A. On the other hand, when performing a dynamic balance test of a propeller shaft having a shape as shown in FIG. 2B (the left end is a sleeve yoke), a sleeve yoke adapter 21 is attached to the chucking device 20 as shown in FIG. 3B. This is a feature of this embodiment.
Hereinafter, the configuration, shape, and attachment method of the chucking device 20 and the sleeve yoke adapter 21 will be specifically described.
[0016]
FIG. 4 is a view showing a state immediately before chucking the flange yoke 14 of the propeller shaft by the chucking device 20. With reference to FIG. 4, the structure of the chucking apparatus 20 is demonstrated first.
The chucking device 20 includes a frame 22, and a pedestal 23 is attached to the right side of the frame 22. A plurality of positioning protrusions 24 for attaching the flange yoke 14 are provided on the base 23.
[0017]
Two chuck claws 25 and 26 are disposed in the frame 22. The two chuck claws 25 and 26 are disposed, for example, facing the vertical position with the pedestal 23 as the center. The two chuck claws 25 and 26 have their rear ends (left side in the figure) connected to a connecting body 29 by pins 27 and 28 so as to be swingable. An operating rod 30 extends in the left-right direction in the frame 22, and the operating rod 30 passes through the center of the coupling body 29. The connection body 29 and the operation rod 30 are connected by a pin 31. In the above configuration, when the operating rod 30 is pulled leftward (in the direction of arrow A1), the coupling body 29 and the chuck claws 25, 26 connected thereto are displaced leftward, and the claw tips of the chuck claws 25, 26 are moved to the arrow A2. , A3 are swung in the approaching direction to chuck the flange yoke 14.
[0018]
FIG. 5 is a view showing a state in which the sleeve yoke adapter 21 is attached to the chucking device 20, and the sleeve yoke 15 of the propeller shaft is fixed by the adapter 21.
The adapter 21 is attached to the pedestal 23 and is fixed to the pedestal 23 with a plurality of bolts 32.
FIG. 6 is a view of the adapter 21 as viewed from the axial right side (right side in FIG. 5).
[0019]
The adapter 21 includes a cylindrical guide tube 33 and a fixing portion 35 having a disk-shaped flange 34 projecting from the rear (left side in FIG. 5) of the guide tube 33, a split collet 36 disposed in the guide tube 33, and a split collet 36. It has a displacement part 38 including a pair of upper and lower locking pieces (only the lower part is shown in FIG. 5) 37 protruding outward from the rear side (left side in FIG. 5) of the collet 36. The inner peripheral wall of the guide tube 33 is tapered so that the interval decreases from the rear, that is, from the right side to the left side in FIG. The outer peripheral surface of the split collet 36 is tapered so as to shorten the outer peripheral length from the right side to the left side in FIG. 5 in accordance with the inner peripheral wall of the guide tube 33.
[0020]
As shown in FIG. 6, a cutout 39 is formed in the flange 34 of the fixed portion 35, and a locking piece 37 of the displacement portion 38 is seen from the cutout 39. Further, the chuck claws 25, 26 are accommodated in the notch 39, and the locking pieces 37 can be locked by the chuck claws 25, 26.
When the adapter 21 is attached to the chucking device 20, first, the flange 34 of the adapter 21 is positioned on the pedestal 23, and the locking piece 37 is locked by the chuck claws 25 and 26. Thereby, the adapter 21 is temporarily fixed to the chucking device 20. A hole for receiving the positioning protrusion 24 is formed in the flange 34 of the adapter 21 so as to be disposed at a predetermined position with respect to the base 23. That is, the adapter 21 can be temporarily held by the chucking device 20 in the same manner as when the flange yoke 14 of the propeller shaft is chucked by the chucking device 20.
[0021]
In a state where the adapter 21 is temporarily held by the chucking device 20, the adapter 21 is fixed to the base 23 with the bolt 32. That is, since the flange 34 of the adapter 21 is temporarily held at a predetermined position with respect to the base 23, a hole for fastening the bolt 32 communicates from the flange 34 to the base 23. A bolt 32 is screwed into this hole, and the flange 34 is fixed to the base 23. Since the insertion position of the bolt 32 and the position of the positioning projection 24 are at different angular positions in the circumferential direction in FIG. 6, they do not interfere with each other.
[0022]
After the flange 34 is fixed to the pedestal 23 with the bolt 32, the adapter 21 does not move or come off the chucking device 20 even if the chuck claws 25 and 26 are opened. In this state, the sleeve yoke 15 can be held and fixed (chucked) by the adapter 21 by opening and closing the chuck claws 25 and 26.
More specifically, the sleeve yoke 15 can be inserted into the split collet 36 from the right side with the chuck claws 25 and 26 opened. After inserting the sleeve yoke 15, when the operating rod 30 is pulled in the A1 direction, the chuck claws 25 and 26 are closed. When the chuck claws 25 and 26 are closed, the claw tips apply a force for displacing the locking pieces 37 integrally projected on the split collet 36 in the left direction. When a force in the left direction is applied to the split collet 36, due to the taper relationship between the guide tube 33 and the split collet 36, the inner diameter of the split collet 36 is narrowed, and the peripheral surface of the sleeve yoke 15 is firmly tightened. As a result, the sleeve yoke 15 is securely held and fixed.
[0023]
When removing the sleeve yoke 15, the operation rod 30 is displaced in the direction opposite to the arrow A1, and the chuck claws 25 and 26 are opened.
As described above, even when the sleeve yoke adapter 21 is attached, chucking / unchucking of the sleeve yoke 15 by the adapter 21 can be performed by the chuck claws 25 and 26. Therefore, when the adapter 21 is attached, a special operation device for chucking the adapter 21 is not required.
[0024]
The configuration of the embodiment described above is merely an example, and the present invention can be variously modified within the scope of the claims.
For example, the measurement gantry according to the present invention is described as being the left measurement gantry 5 in FIG. 1, but the configuration of the right measurement gantry 2 and the chucking device 3 in FIG. The structure which 21 can be attached may be sufficient.
The propeller shaft dynamic balance tester shown in FIG. 1 is merely an example, and the present invention can be applied to various types of propeller shaft dynamic balance testers.
[Brief description of the drawings]
FIG. 1 is a front view of a propeller shaft dynamic balance testing machine according to an embodiment of the present invention.
FIGS. 2A and 2B are diagrams illustrating an example of a propeller shaft that performs dynamic balance. FIGS.
FIGS. 3A and 3B are diagrams illustrating the left measurement base and the chucking device taken out, in a state where no adapter is attached, and FIG. 3B is an illustrative view showing a state where a sleeve yoke adapter is attached to the chucking device.
4 is a view showing a state immediately before chucking the flange yoke 14 of the propeller shaft by the chucking device 20. FIG.
5 is a view showing a state in which a sleeve yoke adapter 21 is fixed to the chucking device 20 and the sleeve yoke 15 of the propeller shaft is chucked by the adapter 21. FIG.
6 is a view of the sleeve yoke adapter 21 as viewed from the axial right side (the sleeve yoke insertion side). FIG.
[Explanation of symbols]
5 Left measurement base 7 Operating device 13, 14 Flange yoke 15 Sleeve yoke 20 Chucking device 21 Sleeve yoke adapter 23 Base 25, 26 Chuck claw 32 Bolt 33 Guide tube 34 Flange 35 Fixed part 36 Split collet 37 Locking piece 38 Displacement Part 39 Notch

Claims (1)

A measurement stand equipped with a chucking device for flange yoke for chucking the flange yoke of a propeller shaft for performing a dynamic balance test;
A sleeve yoke adapter that is detachably attached to the chucking device and can chuck the sleeve yoke of the propeller shaft;
Including
The adapter for sleeve yoke includes a disk-shaped flange and a guide tube protruding from the surface of the flange, a fixed portion whose flange back surface is fixed to the chucking device, and a sleeve disposed in the guide tube of the fixed portion A displacement portion for clamping the yoke,
The chucking device has at least two chuck claws for swinging in the approaching direction to chuck the flange yoke ,
In a state where the fixing portion of the sleeve yoke adapter is fixed to the chucking device, the closing operation for swinging the at least two chuck claws in the approaching direction and the opening operation for swinging in the opposite direction are performed. A propeller shaft dynamic balance testing machine characterized in that the sleeve yoke clamping displacement portion can be displaced to chuck and unchuck the sleeve yoke .

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