CN203509991U - Steel tube clamping device - Google Patents

Abstract

The utility model relates to a steel tube clamping device. The steel tube clamping device comprises a left clamping seat and a right clamping seat, is characterized in that the left clamping seat and the right clamping seat are installed on a base in a sliding connection mode through a sliding plate, the lower portion of the left clamping seat and the lower portion of the right clamping seat are further connected with an opening and closing mechanism installed on the base, and the left clamping seat and the right clamping seat are driven by the opening and closing mechanism. The steel tube clamping device further comprises locking mechanisms, wherein the locking mechanisms are located above and below the left clamping seat and the right clamping seat respectively, and each locking mechanism comprises a locking block used for locking the left clamping seat and the right clamping seat, a locking cylinder used for driving the locking block, and a locking support used for installing the locking cylinder. A pair of clamping seat pressure-bearing surfaces are arranged at the upper portions and the lower portions of the left clamping seat and the right clamping seat respectively in a back-to-back mode, and a pair of clamping block pressure-bearing surfaces are arranged on the clamping blocks in a face-to-face mode. The steel tube clamping device has the advantages of being capable of reducing the impact when clamping a steel tube.

Description

Steel pipe fixture

Technical field

This patent belongs to steel pipe hydraulic press technical field, particularly relates to a kind of steel pipe fixture that is applied to steel pipe hydrostatic tester or steel pipe hydrostatic expanding machine.

Background technology

At present, for the common structure of clamping device of steel pipe hydrostatic testing, be that two jaws in left and right respectively connect a tooth bar, in the middle of two tooth bars, fill a gear, form the pinion and rack being formed by a double rack and individual gears.Its action is to move with one of them jaw of a hydraulic oil cylinder driving, and another jaw, under the drive of pinion and rack, forms relative motion with a upper jaw, thereby realizes the clamping of steel pipe, unclamps.The advantage of this device is to drive oil cylinder to have stroke more than needed, and clamping device can clamp the steel pipe in certain limit, and does not need to change jaw.But clamping force is by driving oil cylinder, realizing with rackwork, and its relative value is less.And in to the clamping process of steel pipe, clamp can produce shock to steel pipe.

Summary of the invention

This patent provides a kind of steel pipe fixture, impact when this clamping device can reduce steel tube clamping for solving the technical problem existing in known technology.

A kind of steel pipe fixture, comprise left clamping seats and right clamping seats, it is characterized in that: left clamping seats and right clamping seats are arranged on base by slide plate in the mode being slidably connected, the bottom of left clamping seats and right clamping seats is also connected with the open-and-close mechanism being arranged on base, and driven by open-and-close mechanism

Described steel pipe fixture also includes retaining mechanism, retaining mechanism is positioned at the above and below of left clamping seats and right clamping seats, retaining mechanism comprises for locking the latch segment of left clamping seats and right clamping seats, drives the locking cylinder of latch segment, the locking support of installation locking cylinder;

On described left clamping seats and right clamping seats, in back-to-back mode, in the above and below of the two, be provided with respectively a pair of clamping seats pressure-bearing surface, on described clamp, in aspectant mode, be provided with a pair of clamp pressure-bearing surface, described clamp clamped left clamping seats and right clamping seats by clamp inclined-plane and coordinating of clamping seats inclined-plane.

Advantage and good effect that this patent has are:

Because this patent adopts technique scheme, clamping device has been cancelled the pinion and rack of common use, makes its structure become comparatively simple; This installs the not only oil cylinder of open-and-close mechanism and directly acts on clamping seats, and is furnished with retaining mechanism, makes this device can become relatively large to the clamping of steel pipe, the power of clasping.And two actions of the displacement of left and right clamping seats and clamping are separated, and speed larger while having avoided displacement action cannot stop, the impact that steel pipe is caused.It both can be used for steel pipe hydrostatic tester, can be used for again steel pipe hydrostatic expanding machine.

Accompanying drawing explanation

Fig. 1 is the structural representation of this patent;

Fig. 2 is the left view of Fig. 1.

In figure: 11, left clamping seats; 12, right clamping seats; 21, U-shaped seat; 22, slide plate; 3, open-and-close mechanism; 41, bearing; 42, locking cylinder; 43, latch segment; 5, steel pipe.。

The specific embodiment

For further understanding utility model content, the Characteristic of this patent, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:

Refer to Fig. 1 and Fig. 2,

A kind of steel pipe fixture, comprise left clamping seats 11 and right clamping seats 12, left clamping seats and right clamping seats are arranged on base by slide plate 22 in the mode being slidably connected, particularly, base is U-shaped seat 21, and the bottom of left clamping seats and right clamping seats is also connected with the open-and-close mechanism 3 being arranged on base, and is driven by open-and-close mechanism, open-and-close mechanism mainly consists of the oil cylinder being arranged on the riser of U-shaped seat two ends, and left clamping seats and right clamping seats carry out the translation of left and right.

Steel pipe fixture also includes retaining mechanism, retaining mechanism is positioned at the above and below of left clamping seats and right clamping seats, retaining mechanism comprises for locking the latch segment 43 of left clamping seats and right clamping seats, vertically drive the locking cylinder 42 of latch segment, the locking support 41 of installation locking cylinder, and guider;

On left clamping seats and right clamping seats, in back-to-back mode, in the above and below of the two, be provided with respectively a pair of clamping seats pressure-bearing surface, on described clamp, in aspectant mode, be provided with a pair of clamp pressure-bearing surface, described clamp clamped left clamping seats and right clamping seats by clamp inclined-plane and coordinating of clamping seats inclined-plane.

The operating principle of this patent is:

When needs clamp steel pipe, clamping seats will be done by open-and-close mechanism by elder generation and right clamping seats is opened, steel pipe is put into and done between clamping seats and right clamping seats, then open-and-close mechanism drives left clamping seats and right clamping seats move toward one another, and finally leave a less gap, therefore This move can not cause any harm to outer surface of steel tube.Then locking cylinder action, drives latch segment clamping seats and the motion of right clamping seats left, and clamp pressure-bearing surface contacts with clamping seats pressure-bearing surface, and drive does left clamping seats and the further relative motion of right clamping seats, makes left and right clamping seats by steel tube clamping.And clamping seats is than being easier to manufacture to obtain the high point of intensity with clamp.Therefore the clasping clamping device and can use and requiring on the hydraulic diameter expander that clamping force is larger of said structure.

Although by reference to the accompanying drawings the preferred embodiment of this patent is described above; but this patent is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under the enlightenment of this patent; not departing from the scope situation that this patent aim and claim protect, can also make a lot of forms, within these all belong to the protection domain of this patent.

Claims (1)

1. a steel pipe fixture, comprise left clamping seats and right clamping seats, it is characterized in that: left clamping seats and right clamping seats are arranged on base by slide plate in the mode being slidably connected, the bottom of left clamping seats and right clamping seats is also connected with the open-and-close mechanism being arranged on base, and driven by open-and-close mechanism

Described steel pipe fixture also includes retaining mechanism, retaining mechanism is positioned at the above and below of left clamping seats and right clamping seats, retaining mechanism comprises for locking the latch segment of left clamping seats and right clamping seats, drives the locking cylinder of latch segment, the locking support of installation locking cylinder;

On described left clamping seats and right clamping seats, in back-to-back mode, in the above and below of the two, be provided with respectively a pair of clamping seats pressure-bearing surface, on described clamp, in aspectant mode, be provided with a pair of clamp pressure-bearing surface.

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