Reading head and magnetic stripe distance self-adjusting mechanism in magnetic grid measurement system

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a reading head and magnetic stripe distance self-adjusting mechanism in a magnetic grid measurement system. Comprising an excavator body, an excavator base, a magnetic strip, a support, a sliding block sleeve, two springs, two double-thread screws, a sliding block, two bearings, a reading head, a fixing piece and a limiting piece, the support is located above the sliding block sleeve, one ends of the two double-thread screws are both in threaded connection with the sliding block, and the other ends of the two double-thread screws movably penetrate through the sliding block sleeve; each spring is arranged outside the corresponding double-thread screw in a sleeving mode, the reading head is movably connected with the sliding block, the two bearings are both movably connected with the sliding block, the excavator base is located below the excavator base, the magnetic strip is located below the excavator base, and the magnetic strip is located below the excavator base. The problem that data cannot be read due to the fact that the relative distance between the reading head and the magnetic strip is uncontrollable due to eccentricity of the excavator body and the excavator base is solved.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a self-adjusting mechanism for the distance between the reading head and the magnetic strip in a magnetic grating measurement system. Background Technology

[0002] Currently, when using magnetic scales to measure the turning angle of excavators, the magnetic scale measurement systems on the market have strict requirements on the working distance between the reading head and the magnetic strip. If the distance is too large, the data cannot be read, and if they are completely in contact, the reading head and the magnetic strip will be worn. Therefore, a suitable working distance is generally maintained during use.

[0003] However, due to the different manufacturing precision of excavators of different specifications, some have low rotational precision, which causes the distance between the reading head and the magnetic strip to fluctuate. Furthermore, during the installation of the magnetic strip, the operator's skill level may limit the flatness of the magnetic strip, which can easily lead to the reading head being directly installed on the excavator body and resulting in the inability to read data. Utility Model Content

[0004] The purpose of this invention is to provide a self-adjusting mechanism for the distance between the reading head and the magnetic strip in a magnetic grating measurement system, which aims to solve the technical problem that the uncontrollable relative distance between the reading head and the magnetic strip caused by the eccentricity between the excavator body and the excavator base leads to the inability to read data.

[0005] To achieve the above objectives, this utility model employs a self-adjusting mechanism for the distance between the reading head and the magnetic strip in a magnetic grating measurement system. The mechanism includes an excavator body, an excavator base, a magnetic strip, a bracket, a slider sleeve, two springs, two double-ended screws, a slider, two bearings, a reading head, a fixing component, and a limiting component. The bracket is located above the slider sleeve. The fixing component is connected to both the slider sleeve and the bracket. The slider is located on one side of the slider sleeve. One end of each of the two double-ended screws is threaded to the slider, and the other end of each double-ended screw movably passes through the slider sleeve. The limiting component... Each of the two double-ended screws is connected to the two screws and located outside the slider sleeve. Each spring is respectively sleeved on the outside of the corresponding double-ended screw. The reading head is movably connected to the slider and located inside the slider. Both bearings are movably connected to the slider and are located above the slider. The excavator body is located on one side of the excavator base. The excavator base is connected to the excavator body and located below the excavator base. The magnetic strip is located below the excavator base.

[0006] The fastener includes multiple bolts, all of which are connected to the double-ended screw and movably pass through the bracket.

[0007] The limiting component includes two nuts, each of which is threadedly connected to the corresponding double-ended screw and is respectively sleeved on the outside of the corresponding double-ended screw.

[0008] The bracket has two limiting grooves, which are symmetrically arranged on the bracket, and each bolt passes through the corresponding limiting groove.

[0009] This utility model discloses a self-adjusting mechanism for the distance between the reading head and the magnetic strip in a magnetic grating measurement system. The bracket is fixed to the excavator body by welding or threaded connection. The slider sleeve is fixed to the bracket by the fixing member. The slider is equipped with the bearing as a roller. In use, the bearing is pressed against the excavator's rotating surface by the spring force, so that the slider and the magnetic strip attached to the excavator base always maintain a fixed distance. During operation, the bearing is close to the rotating surface, raising the reading head to a certain height, so that the reading head and the magnetic strip are within the optimal working range. When the radial distance between the excavator body and the excavator base decreases at this position, the slider is pressed into the slider sleeve, compressing the spring. When the radial distance between the excavator body and the excavator base increases, the spring is released, the slider pops out, and the bearing remains firmly against the rotating surface. The slider slides within a range of ±7.5mm, while the eccentricity of excavators on the market generally does not exceed 5mm. Therefore, this mechanism can meet most usage conditions. In this way, the problem of uncontrollable relative distance between the reading head and the magnetic strip due to the eccentricity between the excavator body and the excavator base is solved, resulting in the inability to read data. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a partial structural diagram of the self-adjusting mechanism for the distance between the reading head and the magnetic strip in the magnetic grating measurement system of this utility model.

[0012] Figure 2 This is a partial structural diagram of the self-adjusting mechanism for the distance between the reading head and the magnetic strip in the magnetic grating measurement system of this utility model, taken from another angle.

[0013] Figure 3 This is a structural schematic diagram of the excavator body of this utility model.

[0014] Figure 4This is a side view of the structure of the self-adjusting mechanism for the distance between the reading head and the magnetic strip in the magnetic grating measurement system of this utility model.

[0015] 1- Bolt, 2- Bracket, 3- Slider sleeve, 4- Spring, 5- Double-ended screw, 6- Slider, 7- Bearing, 8- Reader head, 9- Nut, 10- Magnetic strip, 11- Excavator body, 12- Excavator base, 13- Limit groove. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0017] Please see Figures 1-4 This utility model provides a self-adjusting mechanism for the distance between the reading head and the magnetic strip in a magnetic grating measurement system, including an excavator body 11, an excavator base 12, a magnetic strip 10, a bracket 2, a slider sleeve 3, two springs 4, two double-ended screws 5, a slider 6, two bearings 7, a reading head 8, a fixing component, and a limiting component. The bracket 2 is located above the slider sleeve 3. The fixing component is connected to both the slider sleeve 3 and the bracket 2. The slider 6 is located on one side of the slider sleeve 3. One end of each of the two double-ended screws 5 is threaded to the slider 6, and the other end of each double-ended screw 5 movably passes through the slider sleeve 3. The limiting component is connected to the two double-ended screws 7. The head screw 5 is connected and located outside the slider sleeve 3. Each spring 4 is respectively sleeved on the outside of the corresponding double-headed screw 5. The reading head 8 is movably connected to the slider 6 and located inside the slider 6. Both bearings 7 are movably connected to the slider 6 and are located above the slider 6. The excavator body 11 is located on one side of the excavator base 12. The excavator base 12 is connected to the excavator body 11 and located below the excavator base 12. The magnetic strip 10 is located below the excavator base 12.

[0018] In this embodiment, the bracket 2 is fixed to the excavator body 11 by welding or threaded connection, the slider sleeve 3 is fixed to the bracket 2 by the fastener, and the slider 6 is equipped with the bearing 7 as a roller. In use, the bearing 7 is pressed against the excavator's rotating surface by the spring force of the spring 4, so that the slider 6 and the magnetic strip 10 attached to the excavator base 12 always maintain a fixed distance. When in use, the bearing 7 is close to the rotating surface, raising the reading head 8 to a certain height, so that the reading head 8 and the magnetic strip 10 are within the optimal working range. When the radial distance between the excavator body 11 and the excavator base 12 decreases at this position, the slider 6 is pressed into the slider sleeve 3, simultaneously compressing the spring 4. When the radial distance between the excavator body 11 and the excavator base 12 increases, the spring 4 is released, the slider 6 pops out, and the bearing 7 remains firmly against the rotating surface. The sliding range of the slider 6 is ±7.5mm, while the eccentricity of excavators on the market generally does not exceed 5mm. Therefore, this mechanism can meet most usage conditions. In the above manner, the problem of uncontrollable relative distance between the reading head 8 and the magnetic strip 10 caused by the eccentricity between the excavator body 11 and the excavator base 12 is solved, resulting in the inability to read data.

[0019] Furthermore, the fastener includes multiple bolts 1, all of which are connected to the double-ended screw 5 and movably pass through the bracket 2.

[0020] In this embodiment, the slider sleeve 3 is fixed to the bracket 2 by a plurality of bolts 1, which facilitates the subsequent disassembly of the bracket 2 from the slider sleeve 3 and makes it easier for workers to operate.

[0021] Furthermore, the limiting component includes two nuts 9, each nut 9 being threadedly connected to the corresponding double-ended screw 5 and respectively sleeved on the outside of the corresponding double-ended screw 5.

[0022] In this embodiment, one end of the double-ended screw 5 is threaded to the slider 6 and coated with anti-loosening adhesive. The other end of the double-ended screw 5 passes through the slider sleeve 3 and is fitted with the nut 9 for limiting the position. The connection method is simple and facilitates the subsequent separation of the slider sleeve 3 from the slider 6.

[0023] Furthermore, the bracket 2 has two limiting grooves 13, which are symmetrically arranged on the bracket 2, and each bolt 1 passes through the corresponding limiting groove 13.

[0024] In this embodiment, by opening the limiting groove 13 on the bracket 2, the position of the bracket 2 above the slider sleeve 3 can be finely adjusted using the limiting groove 13.

[0025] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A self-adjusting mechanism for the distance between a reading head and a magnetic stripe in a magnetic grating measurement system, characterized in that, The device includes an excavator body, an excavator base, a magnetic strip, a bracket, a slider sleeve, two springs, two double-ended screws, a slider, two bearings, a reading head, a fixing component, and a limiting component. The bracket is located above the slider sleeve. The fixing component is connected to both the slider sleeve and the bracket. The slider is located on one side of the slider sleeve. One end of each of the two double-ended screws is threaded to the slider, and the other end of each double-ended screw movably passes through the slider sleeve. The limiting component is connected to both double-ended screws and is located outside the slider sleeve. Each spring is sleeved on the outside of its corresponding double-ended screw. The reading head is movably connected to the slider and is located inside the slider. Both bearings are movably connected to the slider and are located above the slider. The excavator body is located on one side of the excavator base. The excavator base is connected to the excavator body and is located below the excavator base. The magnetic strip is located below the excavator base.

2. The self-adjusting mechanism for the distance between the reading head and the magnetic strip in the magnetic grating measurement system as described in claim 1, characterized in that, The fastener includes multiple bolts, all of which are connected to the double-ended screw and movably pass through the bracket.

3. The self-adjusting mechanism for the distance between the reading head and the magnetic strip in the magnetic grating measurement system as described in claim 2, characterized in that, The limiting component includes two nuts, each of which is threadedly connected to the corresponding double-ended screw and is respectively sleeved on the outside of the corresponding double-ended screw.

4. The self-adjusting mechanism for the distance between the reading head and the magnetic strip in the magnetic grating measurement system as described in claim 3, characterized in that, The bracket has two limiting grooves, which are symmetrically arranged on the bracket, and each bolt passes through the corresponding limiting groove.

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