CN212205958U - Magnetic coding displacement measuring device suitable for heavy equipment - Google Patents

Abstract

The utility model provides a magnetic encoding displacement measurement device suitable for heavy equipment, belongs to displacement measurement technical field. The utility model discloses magnetic encoding displacement measuring device includes magnetic stripe device and magnetic encoder, and the magnetic stripe device sets up on the machine of the volume of awaiting measuring length, and the magnetic stripe device includes aluminium alloy strip and a plurality of neodymium magnetic path, and the aluminium alloy strip is provided with the holding tank that holds the neodymium magnetic path, and the width of holding tank and the interval between the holding tank are equal, and the neodymium magnetic path is fixed in proper order and is set up in the holding tank, and the magnetism of adjacent neodymium magnetic path is all opposite; the magnetic encoder is fixedly arranged relative to the magnetic stripe device; the connecting line of the two Hall elements is parallel to the aluminum alloy strip. The utility model discloses a magnetic stripe device and magnetic encoder mutually support the distance that the response machine removed the displacement, and measurement accuracy is relatively more accurate, and the structure is simple relatively, and whole product reliability is high, low cost. The utility model is suitable for a various heavy machinery equipment that require not high to measurement accuracy.

Description

Magnetic coding displacement measuring device suitable for heavy equipment

Technical Field

The utility model belongs to the technical field of the displacement measurement, especially with a low resolution, the heavy displacement measurement device of high reliability, this heavy displacement measurement device mainly is applied to various heavy machinery equipment, including crane, fork truck, the occasion that needs measuring machinery stroke such as high altitude construction car.

Background

Mechanical stroke measurement is a necessary specification requirement for many types of heavy equipment, and often such measurements do not require too high precision. But has extremely high requirements on long-term reliability, vibration resistance, high oil pollution environment and waterproof grade. The conventional measurement mode generally adopts a hysteresis displacement or pull rope displacement sensor, but hysteresis displacement products are expensive and limited in length. And the hysteresis displacement product is arranged in the hydraulic cylinder, and once damaged, the product cannot be maintained. In addition, various problems such as rope breakage and twisting of the rope displacement sensor of the hysteresis displacement product are easy to occur. On the other hand, the hysteresis displacement product has larger integral volume and is not suitable for integrated installation. The displacement measurement product with low cost, high reliability and small volume is urgently needed in the market.

SUMMERY OF THE UTILITY MODEL

To the problem that above-mentioned background art exists, the utility model provides a magnetic encoding displacement measurement device suitable for heavy equipment.

Therefore, the utility model adopts the following technical scheme: a magnetic coding displacement measuring device suitable for heavy equipment is characterized by comprising a magnetic stripe device and a magnetic encoder, wherein the magnetic stripe device is arranged on a machine with a length to be measured, the magnetic stripe device comprises an aluminum alloy belt and a plurality of neodymium magnets, the aluminum alloy belt is provided with accommodating grooves for accommodating the neodymium magnets, the width of the accommodating grooves and the distance between the accommodating grooves are equal, the neodymium magnets are sequentially and fixedly arranged in the accommodating grooves, and the magnetism of all adjacent neodymium magnets is opposite; the magnetic encoder is fixedly arranged relative to the magnetic stripe device;

the magnetic coding displacement measuring device also comprises two Hall elements, and the connecting line of the two Hall elements is parallel to the aluminum alloy belt.

When the machine with the length to be measured moves, the magnetic strip device moves relative to the magnetic encoder, and the moving position is output according to the magnetic change. The speed of movement can also be measured.

The neodymium magnetic block is sealed in the accommodating groove through glue.

The utility model discloses following beneficial effect can be reached: the utility model discloses a magnetic stripe device and magnetic encoder mutually support the distance that the response machine removed the displacement, and measurement accuracy is relatively more accurate, and the structure is simple relatively, and whole product reliability is high, low cost. The utility model is suitable for a various heavy machinery that require not high to measurement accuracy, in addition also greatly reduced the intensity of labour of current manual work measuring machine length.

Drawings

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

Fig. 2 is a schematic diagram of the present invention.

Detailed Description

The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.

The description of the embodiments of the present invention is schematic and does not constitute a specific limitation to the present invention, and the present invention is adopted to the magnetic coding displacement measuring device of the present invention.

As shown in fig. 1-2, the utility model comprises a magnetic stripe device and a magnetic encoder 1, the magnetic stripe device is arranged on a machine with a length to be measured, the magnetic stripe device comprises an aluminum alloy belt 2 and a plurality of neodymium magnetic blocks 3, the aluminum alloy belt is provided with a holding tank 4 for holding the neodymium magnetic blocks, the width of the holding tank and the distance between the holding tanks are equal, the neodymium magnetic blocks are sequentially fixed in the holding tank, and the magnetism of all adjacent neodymium magnetic blocks is opposite; the neodymium magnetic block is sealed in the accommodating groove through glue. The magnetic encoder is fixedly arranged relative to the magnetic stripe device; the magnetic coding displacement measuring device also comprises two Hall elements, and the connecting line of the two Hall elements is parallel to the aluminum alloy belt. When the machine with the length to be measured moves, the magnetic strip device moves relative to the magnetic encoder, and the moving position is output according to the magnetic change. The speed of movement can also be measured.

In describing the present invention, it should be noted that the present invention is only for convenience of description and simplified description, and does not indicate or imply that the device or element referred to must have a particular orientation, limitation of material, configuration and operation in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, the utility model discloses a hall element can also increase or reduce according to precision and use needs to improve application range.

The utility model discloses an application principle: the magnetic strip and the magnetic encoder are respectively arranged on two sides of the mechanical relative movement. Relative movement is generated between the two. When there is no movement, the output signal is 0. When the relative movement is generated, the magnetic encoder reads the change of the south pole and the north pole of the magnetic strip, the internal circuit automatically calculates the length according to the calculation setting, and outputs a numerical value. Because the direct distance between the south pole and the north pole is fixed, 1 bit is automatically added every time the NS is read out to change, and the final displacement changes by more than one bit, the output data is

And d, namely the actual displacement change value. (magnetic encoder can be directly collected on the market, the specific internal structure of the magnetic encoder is not the protection scope of the utility model, therefore, the description is not given again)

The utility model discloses still include two hall elements, through a plurality of hall elements, can judge to advance and retreat.

Basically judging a forward and backward movement method:

the distance of the hall elements may not be equal to d.

When the Hall element is at the position shown in the figure (between NS), the Hall element moves to the right, a magnetic block a at the right side is set, a magnetic block b at the left side is set, a firstly detects S, b detects N, and when the Hall element moves to the left, a detects N, b detects S, and the Hall element smoothly judges whether the Hall element moves to the left or the right. When the hall element is out of NS, the moving direction can be determined as well.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (2)

1. A magnetic coding displacement measuring device suitable for heavy equipment is characterized in that: the magnetic coding displacement measuring device comprises a magnetic strip device and a magnetic encoder, the magnetic strip device is arranged on a machine with a length to be measured, the magnetic strip device comprises an aluminum alloy belt and a plurality of neodymium magnets, the aluminum alloy belt is provided with accommodating grooves for accommodating the neodymium magnets, the width of the accommodating grooves and the distance between the accommodating grooves are equal, the neodymium magnets are sequentially and fixedly arranged in the accommodating grooves, and the magnetism of all adjacent neodymium magnets is opposite; the magnetic encoder is fixedly arranged relative to the magnetic stripe device;

the magnetic coding displacement measuring device also comprises two Hall elements, and the connecting line of the two Hall elements is parallel to the aluminum alloy belt.

2. A magnetically encoded displacement measuring device suitable for use in heavy equipment according to claim 1, wherein: the neodymium magnetic block is sealed in the accommodating groove through glue.

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