JP2808525B2 - Mounting structure for cylinders - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder mounting structure. More specifically, the present invention relates to an improvement relating to durability and the like of a mounting structure in which various types of devices are provided with cylinders, which are actuators of a type for moving a rod such as a hydraulic cylinder, a pneumatic cylinder, and a jack forward and backward.

[0002]

2. Description of the Related Art Conventionally, as a mounting structure for cylinders, for example, the one shown in FIG. 3 is known.

In this conventional mounting structure for cylinders, the cylinders 1 are composed of a flange type hydraulic cylinder or the like. A mounting flange 12 is fixed to an end on the side where the rod 11 advances and retreats. A mounting hole 23 through which the rod 11 of the cylinders 1 can pass is provided, and the mounting flange 12 of the cylinders 1 is brought into contact with the front surface 21 of the mounted portion 2 so that the rod 11 and the back surface 22 are formed in a substantially flat plate shape. To bolt 3,
The cylinders 1 are attached to the attached portion 2 by tightening and fixing with the nuts 4.

In such a conventional mounting structure for cylinders, the reaction force P applied to the rod 11 by the operation of the cylinders 1 is concentrated on the bolts 3 and the nuts 4, so that during the long-term use, There is a problem that the tightening of the bolt 3 and the nut 4 may be loosened or sheared.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems, and has as its object to provide a cylinder mounting structure capable of reliably maintaining the mounted state for a long period of time. I do.

[0006]

In order to solve the above-mentioned problems, a cylinder mounting structure according to the present invention is provided for a plate-shaped mounting portion having a mounting hole through which a rod of a cylinder can pass. In the mounting structure of cylinders that abuts and fixes the mounting flange fixed to the cylinders, a threaded portion is provided on the outer peripheral surface, fixed around the rod of the cylinders, and mounted through the mounting hole of the mounted portion Mounting cylinder that can protrude on the opposite side of the part, backing flange that is screwed into the mounting cylinder and abuts on the opposite side of the part to be mounted, and that the backing flange is prevented from rotating to the cylinder mounting flange The locking means is provided with a locking bolt which is to be engaged with the mounting flange of the cylinder and a backing bolt which presses the backing flange against the mounting portion.

[0007]

According to the above-mentioned means, the reaction force applied to the rod by the operation of the cylinders is dispersed over a large area where the backing flange and the mounting portion are pressed against each other, and the mounting portion is located between the cylinder and the mounting flange. Since the backing flange, which looks like a pinch, is locked against the mounting flange with a locking bolt, the mounting parts will not loosen or be damaged by shearing. An object of the present invention is to provide a mounting structure for cylinders that can be used. The strut bolt effectively disperses the reaction force by press-contacting the two even if the mounting portion and the backing flange have low planar accuracy.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cylinder mounting structure according to the present invention will be described below with reference to FIGS.

In this embodiment, the cylinders 1 are formed of a flange type hydraulic cylinder or the like as in the above-mentioned conventional example.

In the cylinders 1 of this embodiment, screw holes 13 and 14 are provided in a mounting flange 12 to which a later-described locking bolt 5 and a projecting bolt 6 are screwed, respectively. A mounting tube 15 provided with a screw portion is fixed. The mounting tube 15 may be an existing tube provided for protecting the rod 11 and the like. However, the mounting tube 15 penetrates through the mounting hole 23 of the mounting portion 2 and is opposite to the mounting surface 2. It is necessary that the diameter and the axial length can protrude from the (back surface 22).

Further, in the mounted portion 2 of this embodiment, a bolt insertion hole 24 through which the locking bolt 5 is inserted is formed in addition to the mounting hole 23.

Further, in this embodiment, a screw hole 71 capable of being screwed into the mounting cylinder 15 of the cylinders 1 and the rotation locking bolt 5 are provided.
The cylinders 1 pass through the backing flange 7 provided with the bolt insertion holes 72 through which the bolts are inserted, and the bolt insertion holes 72 of the backing flange 7 and the bolt insertion holes 24 of the mounted portion 2.
The rotation stop bolt 5 screwed into the screw hole 13 of the mounting flange 12 and the projecting bolt 6 screwed into the screw hole 14 of the mounting flange 12 of the cylinders 1 are provided.

Such a structure is simple and does not combine specially complicated members, so that it can be manufactured at low cost and easily. Also, it is possible to easily carry out remodeling of existing products.

According to this embodiment, at the time of mounting, first, the cylinders 1 are brought close to each other from the surface 21 side of the mounting portion 2, and the mounting flange 12 of the cylinders 1 is mounted on the mounting portion 2. The rod 1 of the cylinders 1 is brought into contact with the surface 21
1. The mounting tube 15 is made to penetrate through the mounting hole 21 of the mounted portion 2 and protrude toward the rear surface 22 of the mounted portion 2.

Next, the backing flange 7 is made to approach the mounting cylinder 15 of the cylinders 1 from the back surface 22 side of the mounted portion 2, and the screw hole 71 of the backing flange 7 is inserted into the mounting cylinder 15 of the cylinders 1. And the backing flange 7 is rotated to abut against the back surface 22 of the mounted portion 2. At this time, the backing flange 7 is strongly tightened as much as possible, and the backing flange 7 and the mounting flange 12
And fix it.

After the backing flange 7 is tightened, the cylinders 1 pass through the bolt insertion holes 72 of the backing flange 7 and the bolt insertion holes 24 of the attachment portion 2 from the back surface 22 side of the attachment portion 2. The locking bolt 5 is screwed into the screw hole 13 of the mounting flange 12 to strengthen the pinching and fixing of the mounting portion 2 between the backing flange 7 and the mounting flange 12 of the cylinders 1. Stop turning 7.

Thereafter, the bolt 6 is screwed into the screw hole 14 of the mounting flange 12 of the cylinders 1 from the front surface 21 side of the mounted portion 2, and the tip of the bolt 6 is attached to the mounted portion 2.
And the backing flange 7 is attached to the mounting portion 2.
Is pressed against the back surface 22.

When the mounting is completed in this manner, the reaction force P applied to the rod 11 by the operation of the cylinders 1 is transmitted through the mounting tube 15 of the cylinders 1 to the backing flange as shown in a mesh form in FIG. 7 and the part to be mounted 2 are dispersed in a large area S where the parts 7 are pressed against each other. Therefore, in combination with the fact that the backing flange 7 is locked by the locking bolt 5, even when used for a long period of time, loosening, shear damage and the like of the above-described conventional parts do not occur.

In particular, even when the planar accuracy of the mounting portion 2 and the backing flange 7 is low (the mounting portion 2 is a body of a normally equipped device and generally has extremely low planar accuracy). Since the to-be-attached part 2 and the backing flange 7 are pressed against each other by the bolt 6, the dispersion of the reaction force P described above is effectively performed. The press-contact between the mounted portion 2 and the backing flange 7 also prevents the backlash between the mounted portion 2 and the backing flange 7 due to the reaction force P.

As described above, in addition to the illustrated embodiment, the present invention can be applied to a case where the cylinders 1 are not only hydraulic cylinders but also pneumatic cylinders for moving the rod 11 forward and backward, jacks and the like.

[0021]

As described above, in the cylinder mounting structure according to the present invention, the reaction force applied to the cylinder rod is dispersed over a wide area where the backing flange and the portion to be mounted are pressed against each other, and the backing flange is mounted. Since the rotation of the mounting flange is prevented by the rotation locking bolt, the mounting parts are not loosened or sheared, so that the mounting state can be reliably maintained for a long time.

Furthermore, since the structure is simple, it is possible to manufacture easily and inexpensively, and it is possible to easily remodel an existing product.

Further, the mounting portion,
Since the backing flange is pressed, even if the mounting part and the backing flange have low plane accuracy, the reaction force can be effectively dispersed, and the reaction part prevents the mounting part and the backing flange from rattling. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a mounting structure for cylinders according to the present invention.

FIG. 2 is a cross-sectional view of FIG.

FIG. 3 is a sectional view showing a conventional example.

[Explanation of symbols]

1 Cylinders 11
Rod 12 Mounting flange 15 Mounting cylinder 2 Mounting part 23
Mounting hole 5 Lock bolt 6 Strut bolt 7 Backing flange

Claims (1)

(57) [Claims] An outer peripheral surface of a cylinder mounting structure in which a mounting flange fixed to a cylinder is fixedly abutted against a plate-shaped mounted portion having a mounting hole through which a rod of the cylinder can pass. A mounting cylinder fixed around the rods of the cylinders and capable of protruding through the mounting hole of the mounting section and projecting to the opposite side of the mounting section; and a mounting section screwed to the mounting cylinder. Backing flange to be in contact with the opposite side of the cylinder, a detent bolt for locking and fixing the backing flange to the cylinder mounting flange, and screwing the cylinder mounting flange to mount the backing flange Mounting structure for cylinders, comprising a tension bolt for pressing against a part.