JPWO2010050121A1 - Shock absorber testing equipment - Google Patents

Abstract

Provide a shock absorber test device that has a simple configuration and that can be easily adjusted in position according to the amplitude of the vibration applied to the shock absorber and the size of the shock absorber, and does not require time-consuming setup of the shock absorber test. To do. The shock absorber test apparatus 1 includes a base 3 supported on a base 2, a motor 4 provided at one end of the base 3, and provided inside the base 3, and one end connected to the motor 4. The rotary shaft 5 is engaged with the rotary shaft 5, the rotary member 5 is moved to convert the rotary motion of the rotary shaft 5 into linear reciprocating motion in the axial direction of the rotary shaft 5, and is connected to the mobile member 6. A first holding member 8 that supports one end of the movable portion 7a of the shock absorber 7, a second holding member 9 that is provided on the base portion 3 and supports the main body 7b of the shock absorber 7, and is attached to the moving member The load detector 12 is provided, and a displacement detector 13 provided on the other end side of the base portion 3 is provided.

Description

  The present invention relates to a shock absorber test apparatus for performing a performance test of a shock absorber used in a bogie of a railway vehicle.

  Conventionally, shock absorber test apparatuses have been known. For example, as an apparatus using an electric motor, there is an apparatus described in Patent Document 1 below. The apparatus of Patent Document 1 includes an eccentric member that is screwed and fixed to a screw hole provided in a rotating member of a conversion means so that the amplitude of vibration to be applied can be changed according to the hydraulic shock absorber to be tested. Yes.

JP 2003-28750 A

  However, in the device of Patent Document 1, because of the mechanism using the eccentric member, when changing the amplitude of vibration applied to the shock absorber, it is necessary to manually change the screwing position of the eccentric member. It takes time to set up the shock absorber test. Furthermore, since the size differs depending on the type of the shock absorber, it is necessary to set an initial position. However, this position adjustment needs to be performed manually using a lever, and it takes time to set up the shock absorber test.

  Therefore, an object of the present invention is a simple configuration, and it is easy to change the amplitude of vibration given to the shock absorber and to adjust the position according to the size of the shock absorber, and it takes time to set up the shock absorber test. It is an object of the present invention to provide a shock absorber testing apparatus.

(1) The present invention uses a load detector that detects the damping force of the shock absorber and a displacement detector that detects the displacement of the shock absorber, and the shock absorber having a movable portion that can be displaced from the main body portion. A shock absorber test apparatus for measuring the damping force of a container, comprising a base part supported by a base, a motor provided at one end of the base part, and provided at the base part, one end connected to the motor. A rotating shaft that engages with the rotating shaft, converts the rotating motion of the rotating shaft into a linear reciprocating motion in the axial direction of the rotating shaft, and is connected to the moving member, and the shock absorber is movable. A first holding member that holds one of the main body and the main body, and a second holding member that is provided on the base and holds the other of the main body and the movable portion of the shock absorber.

  According to the configuration of the above (1), compared to the conventional shock absorber test device, the means for giving displacement in the test, the means for setting the amplitude of the vibration to be given, and the position adjustment according to the size of the shock absorber. Since the means to perform can be realized by one means, the change of the amplitude of vibration applied to the shock absorber and the position adjustment according to the size of the shock absorber can be facilitated, and the setup of the shock absorber test can be simplified. Furthermore, since the three means are integrated into one as described above, the configuration of the test apparatus can be simplified. Therefore, a compact shock absorber test apparatus can be provided.

(2) In the shock absorber testing apparatus according to (1), it is preferable that the base body portion is provided so as to be tiltable with respect to the base and can be fixed at a predetermined position.

  According to the configuration of (2) above, various types of shock absorbers (for example, so-called shaft damper, vertical motion damper, left and right motion damper, yaw damper, vehicle end damper, pantograph damper, etc.) are the same as in actual use. Tests in posture are possible.

(3) In the shock absorber testing apparatus according to (1) or (2) above, the moving member slides along a linear guide member provided outside the base portion and in the axial direction of the rotating shaft. It is preferable to have a sliding member.

  According to the configuration of (3) above, an eccentric load is not applied to the rotating shaft, and the first holding member connected to the moving member can stably move in a predetermined direction. Therefore, an accurate displacement can be given.

(4) In the shock absorber testing device according to any one of the above (1) to (3), it is preferable that the load detector is attached to the moving member.

  According to the above configuration (4), although it is a simple configuration, for example, tests of shock absorbers such as a shaft damper, a vertical motion damper, a left and right motion damper, a yaw damper, a pantograph damper, and a buffer such as a vehicle end damper are provided. The damping force can be easily measured with the same apparatus as the test of the vessel.

(5) In the shock absorber testing device according to any one of (1) to (4) above, the displacement detector is provided on the other end side of the base portion, and the predetermined portion of the first holding member It is preferable to detect the displacement.

  According to the configuration of (5), although it is a simple configuration, for example, tests of shock absorbers such as a shaft damper, a vertical motion damper, a left and right motion damper, a yaw damper, a pantograph damper, and a buffer such as a vehicle end damper are provided. Displacement can be easily measured with the same device as the test of the vessel.

(6) In the shock absorber testing device according to any one of (1) to (5), the second holding member is provided on the other end side of the base portion so as to face the first holding member. It is preferable that the first member and a second member extending in a direction perpendicular to the axial direction of the rotation shaft in the vicinity of the other end side of the base portion are configured.

  According to the configuration of (6) above, for example, tests of shock absorbers such as a shaft damper, a vertical motion damper, a left and right motion damper, a yaw damper, a pantograph damper, and a shock absorber such as a vehicle end damper are specially performed. It can be easily performed with the same apparatus without using a jig.

(7)
In the shock absorber testing device according to any one of the above (1) to (6), the first holding member and the second holding member are provided to face each other, and the first holding member and the first holding member Each of the two holding members has a pair of surfaces facing each other along the axial direction of the rotation shaft, and includes a holding drive unit that moves one of the pair of surfaces along the axial direction. When holding the shock absorber, it is preferable that one surface is controlled so as to move closer to the other surface.

  According to the configuration of (7) above, when the shock absorber is held by the holding drive unit that moves one surface of the pair of opposing surfaces, control is performed so that one surface approaches the other surface. Therefore, the shock absorber can be held easily and without rattling. That is, when the shock absorber is attached, the distance between the pair of opposing surfaces has a sufficient distance to attach the shock absorber, so that it can be easily attached. Since the distance between the pair of surfaces is shortened so that the shock absorber can be fixed without a gap, an accurate test can be performed. The power of the holding drive unit includes a hydraulic cylinder, a hydraulic motor, a pneumatic cylinder, a pneumatic motor, an electric motor, a solenoid, and the like.

(8)
In the shock absorber testing apparatus according to (7), the holding drive unit preferably includes an electric motor and a linear motion mechanism that converts the rotational motion of the electric motor into linear motion.

  According to the configuration of (8) above, the holding drive unit includes the electric motor and the linear motion mechanism that converts the rotary motion of the electric motor into a linear motion, so one of the opposing surfaces is a straight line. Can be moved. In addition, since electric power is used, piping is not necessary as compared with the case of using fluid, and the configuration can be simplified.

(9)
In the shock absorber testing apparatus described in (8) above, the linear motion mechanism is preferably composed of a screw and a nut.

  According to the configuration of (9) above, the linear motion mechanism is composed of a screw and a nut, so that the linear motion mechanism can be formed with a simple configuration. Moreover, since it is held by screw connection, the shock absorber can be held without being affected by the vibration of the test apparatus even with an electric motor having a small capacity.

(10)
In the shock absorber testing device according to any one of the above (7) to (9), one surface of the first holding member is provided on the other end side of the base portion, and one surface of the second holding member Is provided on one end side of the base part, and the holding drive part is controlled so that one surface moves in a direction approaching the other side after the moving member has moved a predetermined distance to one end side of the base part. It is preferable.

According to the configuration of (10) above, the surfaces of the first holding member and the second holding member are moved away from each other by moving the moving member toward the one end side of the base portion by a predetermined distance, and the both end portions of the shock absorber are moved away from each other. Since it hold | maintains and hold | grips the edge part of a shock absorber after that, a shock absorber can be gripped by simple structure.
That is, the first and second holding members are brought into contact with the side surfaces of both ends of the shock absorber and a gap is formed on the other side surface of both ends of the shock absorber. Since the other surface of the holding member 2 is in contact with the other side surfaces of both ends of the shock absorber so as to close the gap, the holding drive portion does not change the overall length of the shock absorber, and the drive has a small capacity. The end of the shock absorber can be gripped by force, and the configuration of the test apparatus can be simplified.

(11)
In the shock absorber testing device according to any one of the above (7) to (9), one surface of the first holding member is provided on one end side of the base portion, and one surface of the second holding member is The holding drive unit is controlled so that one surface moves in a direction approaching the other surface after the moving member has moved to the other end side of the base portion by a predetermined distance. It is preferable.

According to the configuration of (11) above, the surfaces of the first holding member and the second holding member approach each other when the moving member moves to the other end side of the base portion by a predetermined distance, and both end portions of the shock absorber Is held, and then the end of the shock absorber is gripped, so that the shock absorber can be gripped with a simple configuration.
That is, the first and second holding members are brought into contact with the side surfaces of both ends of the shock absorber and a gap is formed on the other side surface of both ends of the shock absorber. Since the other surface of the holding member 2 is in contact with the other side surfaces of both ends of the shock absorber so as to close the gap, the holding drive portion does not change the overall length of the shock absorber, and the drive has a small capacity. The end of the shock absorber can be gripped by force, and the configuration of the test apparatus can be simplified.

<First Embodiment>
Hereinafter, a shock absorber test apparatus 1 according to a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic front view of the shock absorber testing apparatus 1 according to the first embodiment of the present invention, in which the longitudinal direction of the base portion 3 is set to be the vertical direction. FIG. 2 is a side view of the shock absorber testing apparatus 1 of FIG. 1, and shows only the base portion 3 in the AA cross section of FIG. 1. FIG. 3 is a diagram showing a relationship between an example of the shock absorber 7 capable of performing a test in the shock absorber test apparatus 1 of FIG. 1 and an attachment device 19 attached to the shock absorber 7. (a) is a front view, (b) is a side view, and (c) is a diagram showing a state in which the shock absorber 7 and the mounting device 19 are separated. The mounting tool 19 is provided with a vibration-proof rubber (not shown).

  The shock absorber testing apparatus 1 according to the present embodiment includes a base 2, a base 3, a motor 4, a rotating shaft 5, a moving member 6, a shock absorber 7, a first holding member 8, a second holding member 9, and tilting. Motor 10, tilting rotary shaft 11, load detector 12 and displacement detector 13.

  As shown in FIGS. 1 and 2, the base body 3 is supported by the base 2. The motor 4 is an AC servo motor and is provided at one end of the base body 3. The rotating shaft 5 is provided inside the base portion 3, and one end is connected to the motor 4. The moving member 6 engages with the rotary shaft 5 and moves by converting the rotary motion of the rotary shaft 5 into a linear reciprocating motion in the axial direction of the rotary shaft 5.

  The first holding member 8 is connected to the moving member 6 and holds one end of the movable portion 7 a of the shock absorber 7. The second holding member 9 is provided on the base portion 3 and holds the main body 7 b of the shock absorber 7. The tilting motor 10 is an electric motor used for tilting the base 3 and includes a speed reduction mechanism and a lock mechanism. The tilting rotation shaft 11 transmits the rotational force of the tilting motor 10 to the base unit 3. The load detector 12 is constituted by a strain gauge type load cell attached to a moving member. The displacement detector 13 is composed of a laser reflection type distance sensor provided on the other end side of the base body portion 3.

  Here, as a modification, the load detector 12 is not limited to a strain gauge type load cell, but may be one utilizing a piezoelectric effect of a piezo element. The displacement detector 13 is not limited to a laser-type non-contact sensor such as a laser-type reflective distance sensor, but a non-contact sensor using infrared rays or ultrasonic waves, or a contact-type sensor using electric resistance, magnetism, CDS cells, or the like. It may be.

  Further, if a high-precision encoder is built in the motor 4, it can be used as the displacement detector 13.

  The base 2 includes a bottom plate 2a, a columnar member 2b erected vertically to the bottom plate 2a, and support fixing members 2c, 2d, and 2e that support and fix a lower portion of the columnar member 2b together with the bottom plate 2a.

  The base portion 3 is provided on the back plate 3a, the side plates 3b and 3c attached to both side portions of the back plate 3a, and the upper plate that supports and fixes the motor 4 on the back plate 3a and the side plates 3b and 3c. 3d and a front plate 3e for connecting and fixing the side plates 3b and 3c at the lower part of the side plates 3b and 3c. The upper plate 3d is provided with an opening (not shown) at a substantially central portion so that the motor 4 can be connected to the rotary shaft 5.

  A rotation shaft 5 is connected to the motor 4 via a transmission rotation shaft 14. One end and the other end of the rotating shaft 5 are rotatably supported by rotating shaft support members 15 and 16 with bearings provided on the back plate 3a. Here, as a modification, the rotation shaft 5 may be directly connected to the drive unit of the motor 4 without using the transmission rotation shaft 14.

  The moving member 6 is connected to the plate member 6a, a plurality of sliding members 6b (partially not shown) provided at the four corners on the back side of the plate member 6b, and the plate member 6a via a connecting member 6c. And a main body 6d. The sliding member 6a is engaged with linear guide members 17 and 18 made of, for example, linear guides provided on the front side portions of the side plates 3b and 3c so as to be slidable in the axial direction of the rotary shaft 5. Has been. The main body 6d is a main part that converts the rotary motion of the rotary shaft 5 into a linear reciprocating motion in the axial direction of the rotary shaft 5. Here, the main shaft 6d constitutes a ball screw together with the rotary shaft 5, and a nut formed with a female screw. It is a part which has a member.

  Here, as a modification, the mechanism having the main body 6d of the moving member 6 and the rotating shaft 5 may be a ball spline mechanism or a sliding screw mechanism using the motor 4 as a drive source.

  Moreover, although two guide members 17 and 18 are provided, one may be sufficient.

  The shock absorber 7 is provided with a movable part 7a as a piston, a main body 7b as a cylinder, a supported part 7c provided at the movable part 7a and supported at a predetermined location, and provided at the main body 7b. The shaft portion 7d is cut. The shaft portion 7d can be screwed into the hole 19a of the mounting device 19 which is an attachment device provided with a shaft so that the shaft portion 7d can be hung on the second holding member 9. (See FIGS. 3A to 3C). Thereby, the main body 7b of the shock absorber can be easily supported. The shock absorber 7 is an example, and other types of shock absorbers 7 can be attached as appropriate.

  The first holding member 8 includes a plurality of plate members and the like, and is provided on the moving member 6. In addition, a pair of notches is provided on the plate member 8d so that the supported portion 7c provided on the movable portion 7a of the shock absorber 7 can be hung on the distal end portion of the first holding member 8. The U-shaped plate members 8 a and 8 b are symmetrically arranged in parallel along the axial direction of the rotating shaft 5.

  The 2nd holding member 9 consists of a some board member etc., and is provided on the front board 3e. In addition, similarly to the distal end portion of the first holding member 8, the attachment device 19 attached to the shaft portion 7 d of the shock absorber 7 can be hung on the distal end portion of the second holding member 9. A pair of U-shaped plate members 9 a, 9 b having notches are arranged symmetrically in parallel along the axial direction of the rotating shaft 5.

  Although not shown, the shock absorber 7 to which the mounting device 19 is attached is provided on the U-shaped plate members 8a and 8b and the U-shaped plate members 9a and 9b so as not to fall off during the test. Fixed by a clamp by a hydraulic mechanism.

  The tilting motor 10 is provided so as to sandwich the columnar member 2b together with the tilting rotation shaft 11, and as shown in FIGS. 4 and 5, the base body part 3 is tilted (the angle can be adjusted as appropriate) or in a horizontal state. It can be tilted so that Further, after the base body portion 3 is tilted to a predetermined angle, the base body portion 3 is locked by a locking mechanism (not shown) of the tilting motor 10 so as not to move.

  The load detector 12 is a so-called pancake type, and is provided such that one end surface engages with the plate member 8c and the other end surface engages with the plate member 8d, and the damping generated by the shock absorber It detects force. The data of the damping force detected by the load detector 12 is sent to an external data storage device (not shown) such as a personal computer via the signal line 12a.

  The displacement detector 13 is provided on the other end side of the base portion 3 and in the vicinity of the second holding member 9, and a displacement of a predetermined portion (for example, the surface of the plate member 8 c) in the first holding member 8. By detecting this, the displacement of the shock absorber is indirectly detected. The detected displacement data is sent to an external data storage device (not shown) such as a personal computer via the signal line 13a.

  Next, a test method of the shock absorber test apparatus 1 according to this embodiment will be described. First, the type of the shock absorber 7 to be tested is selected using a touch panel or a keyboard provided in a control device (not shown) such as a personal computer. Next, the shock absorber 7 is attached to the test apparatus 1 through an attachment tool 19 as necessary. Then, the tilting motor 10 is operated so that the shock absorber 7 is in the actual use posture. When the shock absorber 7 is attached to the test apparatus 1, the distance between the pair of U-shaped plate members 8a, 8b and the pair of U-shaped plate members 9a, 9b, and the shock absorber 7 or mounting If the length of the shock absorber 7 to which the appliance 19 is attached does not match, the motor 4 is operated at a slow speed, and the pair of U-shaped plate members 8a and 8b and the pair of U-shaped plate members 9a and 9b Is adjusted to the length of the shock absorber 7 to which the shock absorber 7 or the mounting device 19 is attached. Then, the shock absorber 7 to which the shock absorber 7 or the mounting device 19 is attached is attached to the pair of U-shaped plate members 8a and 8b and the pair of U-shaped plate members 9a and 9b, and is fixed by a clamp. . For example, if the shock absorber 7 to be tested is an axial damper, the longitudinal direction of the base portion 3 is set to be a vertical direction. If the shock absorber 7 is a left-right motion damper or a yaw damper, the longitudinal direction of the base portion 3 is horizontal. If the damper is a pantograph damper, the longitudinal direction of the base body 3 is set to be inclined.

Next, the motor 4 is operated and the rotating shaft 5 is rotated. Thereby, the moving member 6 reciprocates along the axial direction of the rotating shaft 5 at a predetermined speed and stroke. First, as a running-in operation, a reciprocating motion of a predetermined distance is performed a predetermined number of times. Thereafter, a reciprocating motion of a predetermined distance is performed a predetermined number of times as the main test. At this time, the load detector 12 and the displacement detector 13 detect the damping force generated by the shock absorber 7 and the displacement of the shock absorber 7 and record them as the damping force at the test speed. Then, the tester determines whether or not the damping force has reached the acceptance standard from the measured data. After this determination, the shock absorber 7 is removed, another shock absorber 7 is attached in the same manner as described above, and the test is performed again. This is repeated for the number of shock absorbers 7 that need to be tested.

  Note that each operation of the motor 4 and the tilting motor 10 described above may be semi-automated using a computer having an operation program. The determination may be performed using a determination program incorporated in a control device (not shown) such as a personal computer. If necessary, the recorded data may be transferred to an external data storage device and stored.

  According to the present embodiment, in the test apparatus 1, the means for giving displacement in the test, the means for setting the amplitude of the vibration to be given, and the means for adjusting the position according to the size of the shock absorber 7 are a single means. Since it is realizable, the change of the amplitude of the vibration given to the shock absorber 7 and the position adjustment according to the size of the shock absorber 7 become easy, and the test setup of the shock absorber 7 can be simplified. Furthermore, since the three means are integrated into one as described above, the configuration of the test apparatus 1 can be simplified. Therefore, the compact test apparatus 1 for the shock absorber 7 can be provided.

  In addition, since the base body portion 3 is provided so as to be tiltable with respect to the base 2 and can be fixed at a predetermined position, various types of shock absorbers 7 (for example, so-called shaft dampers, vertical motion dampers, left and right motions) It is possible to provide a shock absorber test apparatus 1 that can perform tests in the same posture as in use, such as a dynamic damper, a yaw damper, and a pantograph damper.

  Further, since the moving member 6 has a plurality of sliding members 6a that slide along the linear guide members 17 and 18 provided in the axial direction of the rotating shaft 5 outside the base portion 3, The eccentric load is not applied to the rotating shaft 5, and the first holding member 8 connected to the moving member 6 can stably move in the axial direction of the rotating shaft 5. Therefore, an accurate displacement can be given.

  Further, since the load detector 12 is attached to the moving member 6, the shock absorber 7 such as a shaft damper, a vertical motion damper, a left and right motion damper, a yaw damper, and a pantograph damper can be tested while having a simple configuration. For example, the damping force can be easily measured with the same apparatus as the shock absorber 7 such as the vehicle end damper.

<Another usage example of the first embodiment>
Next, in the shock absorber test apparatus 1 according to the first embodiment, a case where the damping force of another shock absorber is measured will be described using an example. FIG. 6 is a top view of the test apparatus 1 for the shock absorber 20 in the state of FIG. 5, and the base portion 3 is shown as a longitudinal sectional view. FIG. 7 is a view showing a relationship between an example of the shock absorber 20 capable of performing the test in the shock absorber test apparatus 1 of FIG. 1 and a mounting device 21 attached to the shock absorber 20. (a) is a front view, (b) is a side view, and (c) is a view showing a state in which the shock absorber 20 and the mounting device 21 are separated.

  As shown in FIGS. 5 and 6, the shock absorber test apparatus 1 of this use example has the base portion 3 set in a horizontal state. A shock absorber 20 is installed instead of the shock absorber 7.

  The shock absorber 20 is a so-called left and right motion damper, and as shown in FIGS. 7A to 7C, the shock absorber 20 is provided on the movable portion 20 a that is a piston, the main body 20 b that is a cylinder, and the movable portion 20 a. A first supported portion 20c supported at a predetermined location via a columnar mounting device 21 that is a device, and a second supported portion 20d provided at the main body 20b and supported at the predetermined location. ing.

  Also in this usage example, the damping force of the shock absorber 20 can be measured by the same test method as in the first embodiment.

<Second Embodiment>
Next, the shock absorber testing apparatus 31 according to the second embodiment will be described. FIG. 8 is a schematic front view of the shock absorber testing apparatus 31 according to the second embodiment of the present invention, in which the longitudinal direction of the base portion 33 is set to be the horizontal direction. . FIG. 9 is a top view of the shock absorber test apparatus 31 of FIG. 8, and only the base portion 33 is shown as a cross-sectional view taken along the line B-B of FIG. 8. FIG. 10 is a diagram showing a relationship between an example of the shock absorber 37 that can perform the test in the shock absorber test apparatus 31 of FIG. 8 and the mounting instruments 49, 50, 51 attached to the shock absorber 37. And (a) is a front view, (b) is a side view, (c) is the figure which showed a mode that the shock absorber and the fixture for attachment were isolate | separated. Note that portions 32 to 36, 38, and 40 to 48 and portions 2 to 6, 8, and 10 to 18 in the first embodiment are the same in order, and thus description thereof may be omitted. .

  In the shock absorber testing apparatus 31 of the present embodiment, the first holding member 39 is provided on the base 33 in place of the second holding member 9 in the first embodiment. This is different from the shock absorber testing apparatus 1 according to the embodiment.

  The second holding member 39 is a plate-like member that extends in the direction perpendicular to the axial direction of the rotating shaft 35 in the vicinity of the other end side (the end opposite to the motor 34) of the base portion 33. Further, for example, a shock absorber 37 called a so-called vehicle end damper (see FIGS. 10A to 10C) can be attached as shown in FIG.

  The shock absorber 37 has an arm-shaped movable portion 37a and a cylinder-shaped main body 37b. As shown in FIG. 10 (a), the movable portion 37a is movable with the portion connected to the main body 37b as an axis, and attachment tools 49, 50, 51 which are attachment devices are attached to the tip. It is supported by the 1st holding member 38 via.

  At one end of the mounting tool 49, U-shaped portions 49a and 49b similar to the pair of U-shaped plate members 38a and 38b having notches are provided. Thus, the movable portion 37a is movably supported within a predetermined range. In addition, a hole 49c into which the mounting tool 50 can be fitted is provided at the other end of the mounting tool 49, and a pair of U-shaped plate members 38a and 38b are provided via the mounting tool 50. Has come to be supported.

  Also in this embodiment, the damping force of the shock absorber 37 is measured by swinging the arm-like movable portion 37a as shown in FIG. 10A by the same test method as in the first embodiment. be able to.

  Moreover, according to this embodiment, the same effect as 1st Embodiment can be show | played. In particular, a so-called vehicle end damper can be easily tested.

<Third Embodiment>
Next, a shock absorber testing apparatus 61 according to a third embodiment will be described. FIG. 11 is a schematic front view of the shock absorber testing apparatus 61 according to the third embodiment of the present invention, in which the longitudinal direction of the base portion 63 is set to be the horizontal direction. . In addition, since the part of code | symbols 62-66 and 68-78 and the part of code | symbols 2-6 of the said 1st Embodiment and 8-18 are the same in order, description may be abbreviate | omitted. Moreover, since the part of the code | symbol 79 and the part of the code | symbol 39 of the said 2nd Embodiment are the same, description is abbreviate | omitted.

  In the shock absorber testing apparatus 61 of the present embodiment, the second holding member 80 is a member (first member) 69 similar to the second holding member 9 in the first embodiment, and the second embodiment. The shock absorber test apparatus 1 according to the first embodiment and the second embodiment described above are the same (second member) 79 as the second holding member 39 in FIG. This is different from each of the shock absorber test apparatuses 31 according to the above. The member 79 is configured to be removable from the base portion 63 when not used. In other respects, the method of using the shock absorber mounting device and the method of measuring the damping force are substantially the same as those in the first and second embodiments.

  According to the present embodiment, it is possible to provide a shock absorber test device 61 that exhibits the effects of both the first embodiment and the second embodiment. That is, all of the shock absorbers that can be measured in the first and second embodiments by simply changing the shock absorber mounting device, such as shaft dampers, vertical motion dampers, left and right motion dampers, yaw dampers, pantograph dampers, etc. It is possible to easily measure the damping force using the same apparatus for the shock absorber test and the shock absorber test such as the vehicle end damper.

  Further, since the displacement detector 73 is provided on the other end side of the base portion 63 and detects the displacement of the predetermined portion in the first holding member 68, for example, a shaft damper, Displacement can be easily measured with the same device for tests of shock absorbers such as vertical motion dampers, left and right motion dampers, yaw dampers, and pantograph dampers, and shock absorbers such as vehicle end dampers.

  Further, the second holding member 80 includes a member 69 provided on the other end side of the base portion 63 so as to face the first holding member 68, and an axial direction of the rotary shaft 65 in the vicinity of the other end side of the base portion 63. And a plate-shaped member 79 extending in a direction perpendicular to the vertical axis, for example, tests of shock absorbers such as a shaft damper, a vertical motion damper, a left and right motion damper, a yaw damper, a pantograph damper, A shock absorber such as a vehicle end damper can be easily tested with the same apparatus without using a special jig. The member 79 is not limited to a plate shape, and other shapes such as a rod shape may be adopted as long as the shock absorber can be supported.

<Fourth embodiment>
Next, the test apparatus 101 for the shock absorber 7 according to the fourth embodiment will be described. Hereinafter, differences from the first embodiment, the second embodiment, and the third embodiment will be mainly described.

  FIG. 12 is a schematic front view of the test apparatus 101 for the shock absorber 7 according to the fourth embodiment of the present invention. FIG. 13 is a top view of the test apparatus 101 for the shock absorber 7. It is shown as a CC cross-sectional arrow view of FIG.

  As shown in FIGS. 12 and 13, in the test apparatus 101 for the shock absorber 7 according to the fourth embodiment, an electric clamp is used instead of the first holding member 8 and the second holding member 9 of FIGS. 1 and 2. 108,109. The electric clamps 108 and 109 have a pair of clamp members, fixed clamp members 118a and 118b, and movable clamp members 128a and 128b instead of the U-shaped plate members 8a, 8b, 9a, and 9b of FIGS. Prepare.

  Hereinafter, the structure of the electric clamps 108 and 109 will be described in detail. FIG. 14 is a schematic cross-sectional view showing an example of a side cross section of the electric clamps 108 and 109, and FIG. 15 is a schematic partial cutaway view showing an example of the top view of the electric clamps 108 and 109 in FIG. It is.

  As shown in FIGS. 14 and 15, the electric clamps 108 and 109 are mainly composed of fixed clamp members 118a and 118b, movable clamp members 128a and 128b, nuts 120, a trapezoidal screw shaft 129 of 30 degrees, an electric clamp motor 130, and a pair. Spur gears 140 and 141 and a bearing 151.

  The fixed clamp members 118a and 118b are fixed to the casing, and the electric clamp motor 130 is provided inside the casing. Of the pair of spur gears 140 and 141, the spur gear 140 is pivotally supported on the shaft of the electric clamp motor 130, and the spur gear 141 meshes with the spur gear 140.

  As the spur gear 141 rotates, the trapezoidal screw shaft 129 is driven to rotate. A bearing 151 is provided on one end side of the trapezoidal screw shaft 129, and movable clamp members 128 a and 128 b are provided on the other end side of the trapezoidal screw shaft 129.

  The trapezoidal screw shaft 129 is provided with a nut 120, and the fixing force of the movable clamp members 128a and 128b is determined by the diameter of the trapezoidal screw shaft 129 and the fastening force with the nut 120.

  Hereinafter, the operation of the electric clamps 108 and 109 will be described in detail. FIG. 16 is a flowchart illustrating an example of a control method when the shock absorber 7 is attached, and FIGS. 17 to 21 are schematic process diagrams illustrating an example of a control method when the shock absorber 7 is attached. FIG. 17 is a schematic diagram illustrating an example of the operation of step S2 in FIG. 16 (a state in which the shock absorber 7 is attached to the electric clamp 108 and the electric clamp 109), and FIG. 18 illustrates an example of the operation of step S3 in FIG. FIG. 19 is a schematic diagram showing an example of the operation in step S4 of FIG. 16, and FIGS. 20 and 21 are enlarged views of a part of the movable clamp member 128a of FIG.

  As shown in FIG. 16, the motor 4 is operated until the shock absorber 7 can be attached (step S1). Thereby, the electric clamp 108 is moved. Then, the shock absorber 7 is attached by the operator (step S2). In this case, as shown in FIG. 17, the supported portion 7c of the shock absorber 7 and the shaft 19c of the mounting device 19 are formed by fixed clamp members 118a and 118b and movable clamp members 128a and 128b, respectively, in the direction of the arrow H1. Inserted into the gap. In this case, the gap has a space in which the shock absorber 7 can be smoothly inserted. That is, in step S1, the motor 4 is controlled according to the initial set length of the shock absorber 7.

  Subsequently, the motor 4 is operated in a direction in which the shock absorber 7 is extended by a predetermined distance (step S3). In this case, as shown in FIG. 18, the electric clamp 108 is moved in the direction of the arrow V1. Thereby, the supported portion 7c of the shock absorber 7 and the shaft 19c of the mounting device 19 are brought into contact with the fixed clamp members 118a and 118b, respectively. In this case, the supported portion 7c of the shock absorber 7 and the shaft 19c of the mounting device 19 are not in contact with the movable clamp members 128a and 128b. That is, since a gap larger than the size of the supported portion 7c of the shock absorber 7 and the shaft 19c of the mounting device 19 is formed, the supported portion 7c and the shaft 19c are brought into contact only with the fixed clamp members 118a and 118b. The Note that whether or not the supported portion 7c and the shaft 19c are in contact with the fixed clamp members 118a and 118b can be determined by time, a current change of the motor 4, or the like.

  Finally, the electric clamp motor 130 of the electric clamp 108 is operated to hold the shock absorber 7 (step S4). In this case, as shown in FIGS. 19 to 21, the movable clamp member 128a moves in the direction of the arrow V21 or the direction of the arrow V-21 to narrow the gap between the fixed clamp member 118a and the shock absorber 7 to be covered. The support portion 7 c and the shaft 19 c of the mounting tool 19 are gripped. In this case, the movable clamp member 128 a is fixed by a fastening force between the trapezoidal screw shaft 129 and the nut 120. Note that whether or not the supported portion 7c and the shaft 19c are clamped between the fixed clamp members 118a and 118b and the movable clamp member 128a can be determined based on time, a current change in the electric clamp motor 130, or the like.

  As described above, in the shock absorber test apparatus 101 according to the fourth embodiment, the operation of holding both ends of the shock absorber 7 by electric operation can be performed, and the shock absorber is caused by the fastening force between the trapezoidal screw shaft 129 and the nut 120. 7 can be gripped at both ends. As a result, it is not necessary to always generate and fix electric power of the electric clamp motor 130, and power saving can be achieved.

  In addition, since the operator does not need to adjust the electric clamps 108 and 109 so that there is no gap in accordance with the size of both ends of the shock absorber 7, the shock absorber 7 can be easily attached. That is, since the gap | interval which can attach both ends of the buffer 7 easily can be ensured, the attachment operation | work of the buffer 7 becomes easy.

  Furthermore, since the motor 4 is operated and brought into contact with the fixed clamp members 118a and 118b according to the size of the shock absorber 7, the electric clamp motor 130 is operated and the movable clamp members 128a and 128b are moved. The both ends of the vessel 7 can be held without causing rattling. As a result, an accurate test can be easily performed.

  Further, in the shock absorber test apparatus 101, pipes are not required as compared with the case of using a fluid cylinder, so that the configuration can be simplified and the manufacturing cost can be reduced. Since the electric clamp motor 130 of the electric clamps 108 and 109 does not change the overall length of the shock absorber 7, the capacity of the electric clamp motor 130 can be reduced, and the size reduction can be achieved.

  Further, the linear motion mechanism is not limited to a sliding screw structure composed of a trapezoidal screw shaft 129 and a nut 120, for example, any other structure such as a sliding screw mechanism using a triangular screw instead of a trapezoidal screw, You may use the pinion mechanism etc. which are comprised from the pinion connected to the motor via the gear, and a rack. Further, instead of the pair of spur gears 140 and 141, the trapezoidal screw shaft 129 may be driven by a worm gear. Furthermore, in the present embodiment, the electric clamps 108 and 109 are provided with the fixed clamp members 118a and 118b on the side far from the electric clamp motor 130 and the movable clamp members 128a and 128b on the near side. However, the configuration may be such that the side fixed clamp members 118a and 118b close to the electric clamp motor 130 are provided, and the movable clamp members 128a and 128b are provided on the far side. In this case, in step S3, the motor 4 is operated in a direction in which the shock absorber 7 is shortened by a predetermined distance.

  Note that as the shock absorber 7 applicable in the first to fourth embodiments, there are a shock absorber using a fluid pressure such as hydraulic pressure or pneumatic pressure, and a shock absorber using a mechanical part such as a spring.

  In the test device 101 of the shock absorber 7 according to the present embodiment, the electric clamp 108 corresponds to the first holding member, the electric clamp 109 corresponds to the second holding member, the movable clamp members 128a and 128b, and the fixed The clamp members 118a and 118b correspond to a pair of opposed surfaces, the electric clamp motor 130 and the pair of spur gears 140 and 141 correspond to a holding drive unit, the trapezoidal screw shaft 129 and the nut 120 correspond to a screw and a nut, This corresponds to the direction in which the direction of arrow V21 and the direction of arrow -V21 approach.

  The present invention can be modified in design without departing from the scope of the claims, and is not limited to the above-described embodiment or modification. For example, in the above-described embodiment, the sliding member is provided, but a shock absorber testing device that is not provided may be used. In addition, the shock absorber may be attached to the test apparatus according to the above-described embodiment or the modification by reversing the directions of the main body portion and the movable portion.

1 is a schematic front view of a shock absorber testing apparatus according to a first embodiment of the present invention (a longitudinal direction of a base portion is a vertical direction). FIG. 2 is a side view of the shock absorber testing apparatus of FIG. 1. It is the figure which showed an example of the shock absorber testable with the shock absorber test apparatus of FIG. 1 is a schematic front view of a shock absorber testing apparatus according to a first embodiment of the present invention (the longitudinal direction of a base portion is an oblique direction). 1 is a schematic front view of a shock absorber testing apparatus according to a first embodiment of the present invention (a longitudinal direction of a base portion is a horizontal direction). FIG. 6 is a top view of the shock absorber testing apparatus in the state of FIG. 5. It is the figure which showed an example of the shock absorber testable with the shock absorber test apparatus of FIG. It is a schematic front view (the longitudinal direction of a base | substrate part is a horizontal direction) of the testing apparatus of the buffer which concerns on 2nd Embodiment of this invention. FIG. 9 is a top view of the shock absorber testing apparatus of FIG. 8. It is the figure which showed an example of the buffer which can be tested with the testing apparatus of the buffer of FIG. It is a schematic front view (the longitudinal direction of a base | substrate part is a horizontal direction) of the testing apparatus of the buffer which concerns on 3rd Embodiment of this invention. It is a schematic front view of the shock absorber testing apparatus according to the fourth embodiment of the present invention. FIG. 10 is a top view of the shock absorber test apparatus, and only the base portion is shown as a cross-sectional arrow view of FIG. It is typical sectional drawing which shows an example of the side cross section of an electric clamp. It is a typical partial notch figure which shows an example of the upper surface arrow of the electric clamp of FIG. It is a flowchart which shows an example of the control method at the time of attachment of a buffer. It is a schematic diagram which shows an example of the operation | movement (state which attaches a buffer to an electric clamp) of FIG.16 S2. It is a schematic diagram which shows an example of operation | movement of step S3 of FIG. It is a schematic diagram which shows an example of operation | movement of step S4 of FIG. It is the enlarged view to which a part of movable clamp member of FIG. 19 was expanded. It is the enlarged view to which a part of movable clamp member of FIG. 19 was expanded.

1, 31, 61, 101 Shock absorber test apparatus 2, 32, 62 Base 2a, 32a, 62a Bottom plate 2b, 32b, 62b Columnar member 2c, 32c, 62c Support fixing member 3, 33, 63 Base part 3a, 33a, 63a Back plate 3b, 3c, 33b, 33c, 63b, 63c Side plate 3d, 33d, 63d Upper plate 3e, 33e, 63e Front plate 4, 34, 64 Motor 5, 35, 65 Rotary shaft 6, 36, 66 Moving member 6a 6b, 36a, 36b, 66a, 66b Plate member 6c, 36c, 66c Connecting member 6d, 36d, 66d Main body 7, 20, 37, 67 Shock absorber 7a, 20a, 37a, 67a Movable part 7b, 20b, 37b, 67b Main body 7c, 20c Supported portion 7d, 20d Shaft portion 8, 9, 38, 39, 68, 80 Holding member 8a, 8b, 9a, 9b, 38a, 38b, 68a , 68b, 69a, 69b U-shaped plate members 8c, 8d, 38c, 38d, 68c, 68d Plate members 10, 40, 70 Tilt motors 11, 41, 71 Tilt rotating shafts 12, 42, 72 Load detector 12a, 13a, 42a, 43a, 72a, 73a Codes 13, 43, 73 Displacement detectors 14, 44, 74 Rotating shafts 15, 16, 45, 46, 75, 76 Rotating shaft support members 17, 18, 47, 48, 77, 78 Guide member 19, 21, 49, 50, 51 Mounting tool 19a Hole 49a, 49b U-shaped portion 69, 79 Member 108, 109 Electric clamp 118a, 118b Fixed clamp member 128a, 128b Movable clamp member 120 Nut 129 Ball screw shaft 130 Electric clamp motor 140, 141 Pair of spur gears 151 Bearing

Claims (11)

Using a load detector that detects a damping force of the shock absorber and a displacement detector that detects a displacement of the shock absorber, the damping force of the shock absorber having a main body portion and a movable portion that can be displaced from the main body portion. A shock absorber test device for measuring
A base part supported by a table;
A motor provided at one end of the base portion;
A rotating shaft provided on the base portion and having one end connected to the motor;
A moving member that engages with the rotating shaft and converts the rotating motion of the rotating shaft into a linear reciprocating motion in the axial direction of the rotating shaft;
A first holding member connected to the moving member and holding either the movable part or the body part of the shock absorber;
A shock absorber test apparatus, comprising: a second holding member provided on the base portion and holding either the main body portion or the movable portion of the shock absorber.   The shock absorber testing device according to claim 1, wherein the base portion is provided so as to be tiltable with respect to the base and can be fixed at a predetermined position.   The shock absorber test according to claim 1 or 2, wherein the moving member has a sliding member that slides along a linear guide member provided outside the base portion and in an axial direction of the rotating shaft. apparatus.   The shock absorber testing device according to claim 1, wherein the load detector is attached to the moving member.   The said displacement detector is provided in the other end side of the said base | substrate part, and detects the displacement of the predetermined site | part in a said 1st holding member, The any one of Claims 1-4. Shock absorber testing equipment.   The second holding member includes a first member provided on the other end side of the base portion so as to face the first holding member, and an axial direction of the rotation shaft in the vicinity of the other end side of the base portion. The shock absorber testing device according to claim 1, comprising: a second member extending in a vertical direction. The first holding member and the second holding member are provided to face each other,
Each of the first holding member and the second holding member has a pair of surfaces facing each other along the axial direction of the rotation shaft,
A holding drive unit that moves one of the pair of surfaces along the axial direction;
The shock absorber test according to any one of claims 1 to 6, wherein the holding drive unit is controlled to move so that one surface approaches the other surface when holding the shock absorber. apparatus.   The shock absorber testing device according to claim 7, wherein the holding drive unit includes an electric motor and a linear motion mechanism that converts a rotational motion of the electric motor into a linear motion.   The shock absorber test device according to claim 8, wherein the linear motion mechanism includes a screw and a nut. One surface of the first holding member is provided on the other end side of the base portion,
One surface of the second holding member is provided on one end side of the base portion,
After the moving member has moved a predetermined distance to one end side of the base portion,
The shock absorber testing apparatus according to any one of claims 1 to 9, wherein the holding drive unit is controlled so that the one surface moves in a direction approaching the other surface. One surface of the first holding member is provided on one end side of the base portion,
One surface of the second holding member is provided on the other end side of the base portion,
After the moving member has moved a predetermined distance to the other end side of the base portion,
The shock absorber testing apparatus according to any one of claims 1 to 9, wherein the holding drive unit is controlled so that the one surface moves in a direction approaching the other surface.

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