CN103341847A - Spring stretching device - Google Patents

Abstract

The invention discloses a spring stretching device, which comprises a base (1), two support rods (2) arranged on the base (1), a stretching screw (3) arranged in the middle of the base (1), and a The stretching disc (4) on the stretching screw (3) and the flexible rope (5) arranged on the stretching disc (4) at both ends, the nut (6) is set on the top of the stretching screw (3), so A fixed rod (7) is arranged on the top of the support rod (2). The beneficial effects of the invention are: the spring on the equipment can be disassembled conveniently, and the structure is simple, the economy is good, and the operation is convenient.

Description

A spring stretching device

technical field

The invention relates to a spring stretching device.

Background technique

The operating mechanism of a large electrical switch generally needs to use a spring to provide energy for its rapid action. The spring is generally in a stretched state on the equipment. If the spring needs to be removed for maintenance of the equipment, due to the limited working space, large hydraulic equipment cannot be used. The spring retraction force is large, and it is difficult to pull the spring apart only by manual force.

Contents of the invention

The purpose of the present invention is to provide a spring stretching device, which is convenient for removing the spring on the equipment.

In order to solve the problems referred to above, the technical scheme that the present invention takes is:

A spring stretching device, comprising a base, two support rods set on the base, a stretching screw set in the middle of the base, a stretching plate sleeved on the stretching screw rod and a flexible spring set at both ends on the stretching plate A rope, a nut is arranged on the top of the stretching screw, and a fixing rod is arranged on the top of the support rod. The fixing rod is used for fixing the device. Hook the hook at the end of the spring with a flexible rope, rotate the nut to move it to the bottom of the stretching screw, push the stretching plate down, and the flexible rope is tightened to the spring. The hook is stretched, and the spring's hook is loosened and eventually disassembled. The present invention starts from the hook at the end of the spring, which solves the trouble of spring retraction and saves manpower.

As a further improvement of the present invention, the fixed rod is fixed on the top of the support rod. The fixed rod is fixed with the support rod, preventing the support rod from rotating around the fixed rod.

As a further improvement of the present invention, the two ends of the stretching disc are provided with notches matching with the stretching rods. A notch is arranged on the stretching disc to cooperate with the stretching rod to prevent the stretching disc from rotating around the stretching screw during the stretching process, so that the flexible rope will not be entangled, which facilitates the reuse of the device.

As a further improvement of the present invention, the stretching screw is a bolt, the base has a bolt through hole, and the bolt passes through the bolt through hole, and the nut and the stretching plate are located on the bolt on the upper part of the base . Bolts are standard parts, easy to replace, easy to obtain, low in price and good in economy.

To sum up, the beneficial effects of the present invention are: the spring on the device can be easily disassembled, and the structure is simple, the economy is good, and the operation is convenient.

Description of drawings

Fig. 1 is a schematic diagram of the mechanism of the present invention.

Fig. 2 is a schematic diagram reflecting the structure of the stretching disc in the present invention.

Detailed ways

The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

The spring stretching device as shown in Figure 1 includes a base 1, two support rods 2 arranged on the base 1, a stretching screw 3 arranged in the middle of the base 1, and a stretching disc 4 sleeved on the stretching screw 3 And the flexible rope 5 that both ends are arranged on the stretching disc 4, the nut 6 is set on the top of the stretching screw 3, the fixed rod 7 is fixedly arranged on the top of the support rod 2, and the two ends of the stretching disc 4 are open There is a gap 8 matched with the stretch rod.

The aforementioned stretching screw rod 3 is a bolt, and the base 1 is provided with a bolt through hole, and the bolt passes through the bolt through hole, and the nut 6 and the stretching disc 4 are located on the bolt on the upper part of the base 1, and the base 1 1 is composed of three nuts arranged side by side in the shape of "one" and welded together. The two support rods 2 and the fixed rod 7 are both screw rods. The tops of the two support rods 2 are each welded with a nut, and the screw holes of the two nuts are the same. Lines are arranged horizontally, and a suitable number of nuts are arranged on the fixed rod 7, and the aforementioned flexible rope 5 is a steel wire.

Tighten the nut on the fixed rod 7 during use, so that the support rod 2 will not rotate around the fixed rod 7, and fix the fixed rod in a suitable position, then hook the steel wire to the hook at the end of the spring, and rotate the stretching screw rod 3 The head of the (bolt) causes the relative displacement of the stretching screw 3 and the base 1, pushes the stretching plate 4 to move towards the base 1, and the steel wire is gradually stretched and tightened from the loose state until the spring hook is pulled and the spring hook is loosened , and eventually remove the entire spring.

In the technical solutions described in the present invention, all those that are not specifically described are existing technologies or can be realized by conventional means in this field, and it should be understood that for those of ordinary skill in the art, Improvements or changes can be made according to the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present invention.

Claims (4)

1. A spring stretching device, characterized in that it includes a base (1), two support rods (2) set on the base (1), a stretching screw (3) set in the middle of the base (1), A stretching disc (4) sleeved on the stretching screw (3) and a flexible rope (5) set on the stretching disc (4) at both ends, and a nut (6) is set on the top of the stretching screw (3) , the top of the support rod (2) is provided with a fixed rod (7). 2. The spring tensioning device according to claim 1, characterized in that: the fixed rod (7) is fixed on the top of the support rod (2). 3. The spring stretching device according to claim 2, characterized in that: the two ends of the stretching disk (4) are provided with notches (8) matching with the stretching rods. 4. The spring stretching device according to any one of claims 1 to 3, characterized in that: the stretching screw (3) is a bolt, the base (1) has a bolt through hole, and the bolt Through the bolt through hole, the nut (6) and the stretching disc (4) are located on the bolt on the upper part of the base (1).