JP2003021184A - Hydraulic vibration control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily read a scale of an indicator of a vibration control device from a position separated far from the vibration control device. SOLUTION: An indicator scale reading plate 9 of the vibration control device is fitted to an outside wall of a hydraulic casing 2, and a rod 12 provided with an indicator pointer 13 for indicating a position corresponding to a scale of the indicator scale reading plate 9 at one end thereof is provided, and the rod 12 passes through a through hole of an indicator guide 4 provided in the outside wall of the hydraulic casing 2, and the rod 12 is supported by a boot attachment 1 at the other end thereof through a connecting member 11. The indicator scale reading plate 9 has a scale and, scale numerical values with a unit in 1 mm in the hydraulic casing (cylinder case) 2, and the indicator pointer 13 fitted to the boot attachment 1 indicates the scale and the scale numerical value of the indicator scale reading plate 9. With this structure, the scale and the scale numerical value of the indicator scale reading plate 9 can be easily read from a position separated far from the indicator scale reading plate 9.

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a hydraulic vibration isolator for suppressing vibration of a structure such as pipes, and more particularly to measuring a degree of vibration of the structure. TECHNICAL FIELD The present invention relates to a hydraulic anti-vibration device which facilitates reading of a scale of an indicator to perform. 2. Description of the Related Art An apparatus for connecting a hydraulic vibration isolator to a structure such as pipes to prevent the vibration of the structure is shown in FIG. It has an indicator that measures [0003] Structures to be damped, not shown in FIG.
A hydraulic vibration isolator 10 is connected via a rod end 7, a lock nut 6, and a piston rod 8 connected to the structure. The hydraulic vibration isolator 10 includes a boot attachment 1 connected to a piston rod 8, a boot (piston) 5 having the boot attachment 1 at an end, and a hydraulic casing (cylinder case) in which the boot 5 slides.
2 etc. [0004] A connecting member 11 is attached to the boot attachment 1.
The indicator 3 is attached via a through hole of an indicator guide 4 fixed to the outer wall of the hydraulic casing 2. [0005] On the surface of the indicator 3, there are provided a large number of grooves cut at regular intervals in the transverse direction, and the moving distance of the indicator 3 corresponding to the vibration of the structure is determined by the distance of the indicator 3 near the through hole of the indicator guide 4. The number of the groove from the groove at the terminal position was read, and the degree of vibration of the structure was determined. However, when the number of the grooves of the indicator 3 is read as a scale, there is no problem as long as it can be read near the indicator 3. However, the scale of the indicator 3 cannot be read at a short distance. If there is no scaffold, the scale can be read only from a long distance. In such a case, conventionally, the scale of the indicator 3 is small and cannot be read, and reading is performed using binoculars or the like. However, it has been difficult to accurately read the number of scales. In the above-mentioned prior art, no consideration is given to reading the scale of the indicator 3 at a long distance, and the scale cannot be read accurately. There were problems such as the inability to read the scale. It is an object of the present invention to solve the above-mentioned problems and to make it possible to easily read the scale of the indicator of the vibration isolator even from a long distance. [0010] The above-mentioned problem is solved by the following constitution. That is, in a hydraulic anti-vibration device that connects a piston of a hydraulic cylinder to a structure to perform vibration damping of the structure, one end of the indicator that measures the displacement of the arrangement position of the piston with respect to the cylinder is fixed to the piston, and the other end is fixed to the piston. It consists of a rod-like member slidably mounted on the cylinder, the indicator has a scale indicator at the end of the sliding part on the cylinder side, and the cylinder wall has an area corresponding to the indicator of the indicator. And a display unit for displaying a scale value corresponding to the scale. On the side wall of a hydraulic cylinder of a vibration isolator for suppressing vibration of a structure such as pipes, a scale of, for example, 1 mm and a display unit for a scale numerical value having a size larger than the unit width of the scale are provided. Therefore, the scale and numerical value of the display unit can be easily and accurately read from a long distance by the indicator instruction unit. FIG. 1 shows an embodiment of the present invention. A rod end 7 is connected to the structure to be damped shown in FIG. 1, and a hydraulic vibration isolator 10 is connected to the rod end 7 via a lock nut 6 and a piston rod 8. The hydraulic vibration isolator 10 includes a boot attachment 1 connected to a piston rod 8, the boot attachment 1.
(Piston) 5 having at the end thereof a hydraulic casing (cylinder case) 2 in which the boot 5 slides. An indicator scale reading plate 9 of a hydraulic vibration isolator 10 shown in FIG. 1 is attached to the outer wall of the hydraulic casing 2 and an indicator pointer 13 pointing to a position corresponding to the scale of the indicator scale reading plate 9.
Is provided on the rod 12 provided at one end. The rod 12 passes through a through hole of the indicator guide 4 provided on the outer wall side of the hydraulic casing 2, and the other end is attached to the boot attachment 1 via the connecting member 11. Is configured to slide through the through hole. The indicator scale reading plate 9 mounted on the outer wall of the hydraulic casing 2 has a scale of 1 mm and a scale value larger than the scale width of 1 mm on the hydraulic casing 2. The indicator pointer 13 attached to 1 is shaped to indicate the scale and numerical value position of the indicator scale reading plate 9. Therefore, since the indicator pointer 13 indicates the scale and the scale value of the indicator scale reading plate 9 in units of 1 mm, the scale and the scale value of the indicator scale reading plate 9 can be easily read from a long distance. By reading the scale of the scale reading plate 9 and the scale value, the degree of vibration of the structure can be easily determined. According to the present invention, the scale of the indicator of the vibration isolator can be easily read even at a long distance, so that the readout value of the accurate scale can be obtained and the correct evaluation of the vibration isolator can be performed. become.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a main part of a vibration isolator for structures such as pipes to which an indicator scale reading plate and an indicator are attached according to an embodiment of the present invention. FIG. 2 is a side view of a main part of a vibration damping device for structures such as pipes according to the related art. [Description of Signs] 1 Boot attachment 2 Hydraulic casing 3 Indicator 4 Indicator guide 5 Boot 6 Lock nut 7 Rod end 8 Piston rod 9 Indicator scale reading plate 10 Hydraulic anti-vibration device 11 Connecting member 12 Rod 13 Indicator indicating needle

Claims (1)

Claims: 1. A hydraulic anti-vibration device for connecting a piston of a hydraulic cylinder to a structure to perform vibration damping of the structure. A bar-shaped member having one end fixed to the cylinder and the other end slidably attached to the cylinder, a scale indicating portion provided at an end of a slidable portion on the cylinder side of the indicator, and A hydraulic anti-vibration device characterized in that a scale and a scale numerical value display unit corresponding to the scale are provided in an area corresponding to a scale indicating unit of the indicator.