CN107443412B - Clamp and method for fetching objects at high temperature - Google Patents

Abstract

The invention provides a clamp and a method for fetching objects at high temperature, which comprises a clamping head, an ejector rod, a connecting plate, a hook, a connecting seat, an extension rod, an outer nut, an inner nut, a sleeve and a reverse spring, wherein the outer nut is fixedly connected with the extension seat; the rear parts of the upper clamping plate and the lower clamping plate of the clamping head are provided with pressing handles, and the rear ends of the pressing handles of the upper clamping plate are hinged with hooks; the front part of the connecting seat is provided with a through rod, a reverse spring, an inner nut and an outer nut are sleeved on the through rod, and the outer nut and the inner nut are respectively welded on the upper clamping plate and the lower clamping plate; the connecting seat is welded with a connecting plate and a sleeve, the sleeve is internally provided with a push rod with a contact and a collision head in a sliding way, and the extension seat at the rear end of the connecting seat is connected with the extension rod through threads. The hook is hung on the lower clamping plate to open the upper clamping plate and the lower clamping plate, when an object touches the ejector rod, the ejector rod moving inwards bumps the hook away from the lower clamping plate, and the upper clamping plate and the lower clamping plate are closed under the action of the reverse spring to clamp the object. The invention can realize automatic clamping of objects in long distance or at high temperature, shorten the operation time, improve the working efficiency, improve the operation condition and avoid high-temperature roasting and scalding accidents.

Description

Clamp and method for fetching objects at high temperature

Technical Field

The invention belongs to the technical field of tools and instruments, and particularly relates to a clamp capable of automatically clamping objects under a long-distance or high-temperature condition and a clamping method thereof.

Background

At present, the object is difficult to clamp when the object is far (1-8 meters) away or at high temperature. For example, a 300kg small coke oven is heated by a silicon carbide rod, the silicon carbide rod belongs to an easily-worn part and needs to be replaced every 3 months, and the silicon carbide rod is extremely brittle in material, and after the silicon carbide rod works at high temperature for 3 months, the resistance value of the silicon carbide rod is increased, the texture becomes more fragile, and the silicon carbide rod is easily broken into short sections to fall into the oven and cannot be taken out. In the whole process of replacing the silicon carbide rod, the furnace temperature is as high as 600-800 ℃, the high-temperature silicon carbide rod brings great difficulty to the operation, time and labor are wasted, the operation condition is severe, and scalding accidents are easy to happen.

Disclosure of Invention

The invention aims to provide a clamp and a clamping method thereof, which are simple and easy to operate, can shorten the operation time, improve the operation condition and avoid scalding accidents under the conditions of long distance or high temperature.

Therefore, the technical solution adopted by the invention is as follows:

a clamp for high-temperature fetching comprises a clamping head, an ejector rod, a connecting plate, a hook, a connecting seat, an extension rod, an outer nut, an inner nut, a sleeve and a reverse spring; the chuck is a box with a front opening and a rear opening, which is formed by buckling an upper clamping plate and a lower clamping plate, the front ends of the upper clamping plate and the lower clamping plate are respectively provided with a clamping opening, the rear parts of the upper clamping plate and the lower clamping plate are respectively provided with an outward bent pressing handle, and the rear end of the pressing handle of the upper clamping plate is hinged with a hook; the whole connecting seat is U-shaped, the front parts of two legs of the U-shaped are respectively bent outwards at right angles to form two penetrating rods, reverse springs, inner nuts and outer nuts are respectively sleeved on the penetrating rods from inside to outside, the two outer nuts are welded on the inner side of the upper clamping plate, the two inner nuts are welded on the inner side of the lower clamping plate, and the upper clamping plate and the lower clamping plate are rotated and opened by taking the penetrating rods as shafts; a connecting plate is welded on the inner side of the connecting seat, a section of sleeve is welded below the connecting plate, a push rod is connected in the sleeve in a sliding mode, the front end of the push rod is provided with a contact, and the rear end of the push rod is provided with a collision head; the rear end of the connecting seat is welded with a tubular extension seat with internal threads, and the extension seat is connected with an extension rod through threads.

The extension line of the ejector rod axis is intersected with the hook axis.

The contact of the ejector rod is rectangular, and the collision head is in a shape like the Chinese character 'ji'.

The length of the extension rod is selected according to the distance between the extension rod and the clamped object.

The included angles between the clamp handles of the upper clamp plate and the lower clamp plate and the horizontal plane are both 25-32 degrees.

The surfaces of the clamping openings at the front ends of the upper clamping plate and the lower clamping plate are both provided with serrations.

A method for a clamp for fetching objects at high temperature comprises the following specific clamping method and steps:

(1) before clamping an object, the length of the extension rod is selected according to the distance of the object, then the pressing handles of the upper clamping plate and the lower clamping plate are pressed simultaneously by hands, so that the clamping openings of the upper clamping plate and the lower clamping plate are opened after the upper clamping plate and the lower clamping plate rotate by taking the penetrating rod as an axis, then the hooks at the rear ends of the pressing handles of the upper clamping plate are hung on the rear edges of the pressing handles of the lower clamping plate, and the clamping openings of the upper clamping plate and the lower clamping plate are kept in an opened state through.

(2) When the object contacts the contact head at the front end of the ejector rod of the clamp, the ejector rod retracts inwards to move under the action of the object, and when the rear end of the ejector rod collides with the hook, the hook is collided away from the lower clamp plate pressing handle.

(3) After the hook is separated, the upper clamping plate and the lower clamping plate rotate to be closed by taking the penetrating rod as an axis under the action of the resilience force of the reverse spring, so that an object is clamped, and the object is prevented from slipping under the action of the serration on the surface of the clamping opening.

(4) The extension bar and the connecting seat are pulled back, and then the object can be taken out.

The invention has the beneficial effects that:

the clamp has a simple structure, is convenient to operate, can be provided with the extension bar according to needs, and realizes automatic clamping of objects under long distance or high temperature conditions, thereby greatly shortening the operation time, improving the working efficiency, improving the operation conditions, effectively avoiding high-temperature roasting and scalding accidents, and ensuring the operation safety.

Drawings

FIG. 1 is a front view of a high-temperature fetching jig;

FIG. 2 is a plan view of a high-temperature fetching jig.

In the figure: the contact comprises a contact 1, an upper clamping plate 2, an ejector rod 3, a through rod 4, a connecting plate 5, a pressing handle 6, a hook 7, a connecting seat 8, an extension seat 9, an extension rod 10, an outer nut 11, a sleeve 12, fine teeth 13, a ram 14, an inner nut 15 and a reverse spring 16.

Detailed Description

The attached drawing shows that the clamp for high-temperature fetching comprises a clamping head, an ejector rod 3, a connecting plate 5, a hook 7, a connecting seat 8, an extension seat 9, an extension rod 10, an outer nut 11, a sleeve 12, an inner nut 15 and a reverse spring 16.

The chuck is composed of an upper clamping plate 2 and a lower clamping plate, the upper clamping plate 2 and the lower clamping plate are buckled with each other to form a box with a front opening and a rear opening, clamping openings are formed in the front ends of the upper clamping plate 2 and the lower clamping plate, and fine teeth 13 are machined on the surfaces of the clamping openings to prevent objects from slipping. The rear parts of the upper splint 2 and the lower splint are respectively provided with a pressing handle 6 which is bent outwards, the included angles between the pressing handles 6 and the horizontal plane are both 28 degrees, and the rear end of the pressing handle 6 of the upper splint 2 is hinged with a hook 7. The connecting seat 8 is integrally U-shaped, the front parts of two legs of the U-shaped are respectively bent outwards at right angles to form two through rods 4, the two through rods 4 are respectively sleeved with a reverse spring 16, an inner nut 15 and an outer nut 11 from inside to outside, the two outer nuts 11 are respectively welded on the inner side of the upper clamping plate 2, and the two inner nuts 15 are respectively welded on the inner side of the lower clamping plate, so that the upper clamping plate 2 and the lower clamping plate can be rotated to open and close by taking the through rods 4 as shafts. A connecting plate 5 is welded on the inner side of the connecting seat 8, a section of sleeve 12 is welded below the connecting plate 5, a mandril 3 is connected in the sleeve 12 in a sliding way, the front end of the mandril 3 is provided with a rectangular contact 1, and the rear end is processed with a 'shaped' striker 14; a tubular extension seat 9 is welded in the middle of the rear end of the connecting seat 8, inner threads are arranged on the inner wall of the extension seat 9, external threads are processed at one end of an extension rod 10, and the extension rod 10 is connected to the extension seat 9 through threads. The length of the extension bar 10 is selected corresponding to the distance from the gripped object. In order to ensure that the hook 7 can be separated from the pressing handle of the lower clamping plate after the impact, the extension line of the axis of the mandril 3 is intersected with the axis of the hook 7.

The invention discloses a specific clamping method of a clamp for high-temperature fetching, which comprises the following steps:

1. before clamping an object, the length of the extension bar 10 is selected according to the distance of the object, then the pressing handles 6 of the upper clamping plate 2 and the lower clamping plate are pressed by hands simultaneously, so that the clamping openings of the upper clamping plate 2 and the lower clamping plate rotate by taking the penetrating rod 4 as an axis, then the hooks 7 at the rear end of the pressing handles 6 of the upper clamping plate 2 are hung on the rear edge of the pressing handles of the lower clamping plate, and the clamping openings of the upper clamping plate 2 and the lower clamping plate are kept in an opening state through the hooks 7.

2. When fetching objects, the clamp with the open clamping opening extends to the object to be clamped, when the object contacts the contact 1 at the front end of the ejector rod 3, the ejector rod 3 retracts inwards to move under the action of the object, and when the collision head 14 at the rear end of the ejector rod 3 touches the hook 7, the hook 7 is collided away from the lower clamping plate pressing handle.

3. After the hook 7 is separated, the upper clamping plate 2 and the lower clamping plate rotate to close by taking the penetrating rod 4 as an axis under the resilience force of the reverse spring 16, thereby clamping the object and preventing the object from slipping under the action of the fine teeth 13 on the surface of the clamping opening.

4. The extension bar 10 and the connecting seat 8 are pulled back, and then the object can be taken out.

Claims (7)

1. A clamp for high-temperature fetching is characterized by comprising a chuck, a mandril, a connecting plate, a hook, a connecting seat, an extension rod, an outer nut, an inner nut, a sleeve and a reverse spring; the chuck is a box with a front opening and a rear opening, which is formed by buckling an upper clamping plate and a lower clamping plate, the front ends of the upper clamping plate and the lower clamping plate are respectively provided with a clamping opening, the rear parts of the upper clamping plate and the lower clamping plate are respectively provided with an outward bent pressing handle, and the rear end of the pressing handle of the upper clamping plate is hinged with a hook; the whole connecting seat is U-shaped, the front parts of two legs of the U-shaped are respectively bent outwards at right angles to form two penetrating rods, reverse springs, inner nuts and outer nuts are respectively sleeved on the penetrating rods from inside to outside, the two outer nuts are welded on the inner side of the upper clamping plate, the two inner nuts are welded on the inner side of the lower clamping plate, and the upper clamping plate and the lower clamping plate are rotated and opened by taking the penetrating rods as shafts; a connecting plate is welded on the inner side of the connecting seat, a section of sleeve is welded below the connecting plate, a push rod is connected in the sleeve in a sliding mode, the front end of the push rod is provided with a contact, and the rear end of the push rod is provided with a collision head; the rear end of the connecting seat is welded with a tubular extension seat with internal threads, and the extension seat is connected with an extension rod through threads.

2. The jig for high temperature fetching as claimed in claim 1, wherein an extension line of the axis of the ejector pin intersects with the axis of the hook.

3. The clamp for high-temperature fetching of claim 1, wherein the contact of the top rod is rectangular and the ram is in a shape of Chinese character 'ji'.

4. The clamp for hot fetching as claimed in claim 1, wherein the length of the extension bar is selected according to the distance from the object to be fetched.

5. The clamp for high temperature fetching according to claim 1, wherein the included angles between the clamp handle of the upper clamp plate and the pressing handle of the lower clamp plate and the horizontal plane are both 25 ° to 32 °.

6. The clamp for hot fetching according to claim 1, wherein the upper and lower clamp plates have serrations on the surfaces of the front clamp openings.

7. The method for applying the clamp for high-temperature fetching of claim 1 is characterized in that the specific clamping method and steps are as follows:

(1) before clamping an object, selecting the length of the extension rod according to the distance of the object, pressing the pressing handles of the upper clamping plate and the lower clamping plate simultaneously by hands to enable the clamping openings of the upper clamping plate and the lower clamping plate to be opened after the upper clamping plate and the lower clamping plate rotate by taking the penetrating rod as a shaft, then hanging a hook at the rear end of the pressing handle of the upper clamping plate on the rear edge of the pressing handle of the lower clamping plate, and keeping the clamping openings of the upper clamping plate and the lower clamping plate in an opened state through the hook;

(2) when the object is contacted with a contact at the front end of an ejector rod of the clamp, the ejector rod retracts inwards to move under the action of the object, and when a collision head at the rear end of the ejector rod is contacted with the hook, the hook is collided away from a lower clamp plate pressing handle;

(3) after the hook is separated, the upper clamping plate and the lower clamping plate rotate and close by taking the penetrating rod as a shaft under the action of the resilience force of the reverse spring, so that an object is clamped, and the object is prevented from slipping under the action of the serration on the surface of the clamping opening;

(4) the extension bar and the connecting seat are pulled back, and then the object can be taken out.

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