Gauge structure

Abstract

The utility model relates to a scale structure which is characterized by comprising a main body, an upper shaft sleeve, a lower sleeve, a lower shaft sleeve, a measuring rod, a guide rod and a guide plate, the upper end of the main body is provided with the upper shaft sleeve, and the lower end of the main body is provided with the lower sleeve and the lower shaft sleeve; the measuring rod extends upwards out of the upper shaft sleeve and downwards penetrates through the lower sleeve to extend out of the lower shaft sleeve, and can axially slide in the upper shaft sleeve and the lower shaft sleeve; a straight groove communicated with the upper end and the lower end of the main body and a guide plate connected through a screw are arranged in the main body, a guide groove is formed in the end face, facing the measuring rod, of the guide plate, one end of the guide rod extends into the guide groove and is tangent to the two side faces of the guide groove, and radial swing of the measuring rod is limited through the guide rod and the guide groove; and an air valve structure is arranged above the upper shaft sleeve, so that the stability of the measuring rod during movement is kept. Compared with the prior art, the guide structure is convenient to install and adjust, stable in structure, accurate in measured data, small in product size and low in production cost, and the measuring rod moves smoothly and stably.

Description

Technical Field

[0001] This utility model relates to the field of measuring tool technology, and more specifically, to a scale structure. Background Technology

[0002] The guide structure of a dial indicator is one of its core precision components. It ensures that the measuring rod can only move accurately, stably, and with low friction along its axis during measurement, without radial wobble, tilting, or jamming. This is crucial for guaranteeing the measurement accuracy, repeatability, and service life of the digital dial indicator.

[0003] Common guiding methods include bushing type, guide rail type, and ball bearing type. Bushing type has a simple structure but is prone to wear; guide rail type has good rigidity but high cost; ball bearing type has low friction and long life, but complex structure. In existing gauges, the most stable moving guiding structure uses the cooperation of guide pins and guide grooves. However, this method results in excessively large volumes when manufacturing large-range gauges, limiting product application. Some small-volume gauge guiding structures on the market have high requirements for the straightness of the measuring rod and the fit clearance. Excessive clearance can cause the measuring rod to wobble, affecting measurement accuracy, and also leads to low production efficiency and high production costs. Summary of the Invention

[0004] This invention aims to at least partially solve one of the aforementioned technical problems in the prior art. Therefore, one objective of this invention is to provide a gauge guiding structure that is easy to install and adjust, structurally stable, allows for smooth movement of the measuring rod, and has low production costs.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: it includes a main body, an upper bushing, a lower sleeve, a measuring rod, a guide rod, and a guide plate; the upper bushing is fixedly arranged vertically at the upper end of the main body, and the lower sleeve is fixedly arranged vertically at the lower end; the lower bushing is fixedly arranged concentrically with the lower sleeve at the lower end of the lower sleeve; the measuring rod is axially sliding in the shaft hole of the upper bushing and the lower bushing, the upper end of the measuring rod extends upward out of the upper bushing, and the lower end passes downward through the lower sleeve and extends downward below the lower bushing; the guide rod is fixedly arranged vertically in the middle of the measuring rod and protrudes from the measuring rod at one end; the guide plate is provided on the side of the main body near the guide rod by a threaded connection.

[0006] The beneficial effects of this utility model are as follows: Firstly, the cylindrical structure of the upper and lower copper sleeves is easier to process and assemble, and the concentricity of the shaft holes of the upper and lower bushings is easier to ensure. Secondly, the hollow structure inside the cylindrical tube provides sufficient movement space for the measuring rod, spring, and fixed grid, reducing the overall size and weight of the product. The guide rod in the middle of the measuring rod and the guide plate on one side of the main body can effectively limit the radial offset of the measuring rod, ensuring that the measuring rod can only move linearly along the axial direction, without radial shaking, tilting, or jamming, thus ensuring the measurement accuracy of the product. The guide plate is fixedly connected by threads, making guidance and adjustment convenient, ensuring smooth movement of the measuring rod, maintaining stable measurement performance, reducing size, and lowering production costs.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] The guide plate has a guide groove arranged along the length of the measuring rod on its end face facing the measuring rod. One end of the guide rod protrudes from the measuring rod and extends into the guide groove, and is tangent to both sides of the guide groove. The guide rod and the guide groove restrict the radial swing of the measuring rod.

[0009] The beneficial effects of adopting the above-mentioned improvement scheme are: the measuring rod moves linearly within the upper and lower bushings under the constraint of the guide rod and guide groove, without generating radial offset, reducing vibration and shaking, improving the overall stability of the product, ensuring the measurement accuracy of the product, and extending its service life.

[0010] Furthermore, the main body has a straight groove connecting the upper and lower ends of the main body near the guide plate. The guide plate passes through the straight groove from the outer side of the upper bushing and is inserted into the main body, and is connected and installed by fastening screws.

[0011] The beneficial effects of adopting the above-mentioned further solution are: the straight groove connecting the upper and lower ends inside the main body makes it convenient for the guide plate to be inserted into the main body from the outer side of the upper bushing for installation. The guide plate does not need to be installed from the front or back, which ensures the stability of the product structure while effectively reducing the product volume.

[0012] Furthermore, the end face of the main body near the guide plate is provided with a guide mounting hole and a guide mounting screw, and one end of the guide plate is provided with a threaded hole. The guide plate and the main body are fixedly connected through the guide mounting hole, the guide mounting screw and the threaded hole.

[0013] The beneficial effects of adopting the above-mentioned further solution are: the guide plate and the main body are fixedly connected by threads, which facilitates the adjustment of the parallelism between the guide groove and the measuring rod, and ensures that the measuring rod moves smoothly.

[0014] Furthermore, the upper bushing is provided with an open circular opening shaped like the letter "C". The measuring rod passes through the circular opening and is slidably connected to the upper bushing. The cylindrical surface of the measuring rod protrudes from the bushing towards the opening side of the circular opening.

[0015] The beneficial effects of adopting the above-mentioned further solution are: the upper bushing is provided with an open circular opening, and one side of the measuring rod protrudes from the upper bushing, so that the support plate and the fixed grid can be moved into the upper sleeve at the upper end of the upper bushing. While ensuring the smooth movement of the measuring rod, the length of the measuring rod and the product is shortened, and the production cost is reduced.

[0016] Furthermore, a cylindrical upper sleeve is provided at the upper end of the main body and the upper bushing, and a tail cap connected by a thread is provided at the upper end of the upper sleeve away from the main body; a cylindrical air valve is provided inside the upper sleeve and is fixedly connected to the upper end of the measuring rod, and the air valve is in clearance fit with the upper sleeve and moves between the upper bushing and the tail cap under the drive of the measuring rod.

[0017] The beneficial effects of adopting the above-mentioned further solution are: the upper sleeve, the air valve and the tail cap form a semi-enclosed space. The air valve moves up and down in the upper sleeve under the drive of the measuring rod. Since there is a small gap between the upper sleeve and the air valve, the air pressure in the space changes relatively slowly, which realizes the smooth deceleration of the measuring rod, prevents rigid impact, reduces noise and protects the equipment, and avoids the measurement data from being disordered or lost due to excessive speed.

[0018] Furthermore, a square plate structure support is provided on the side of the measuring rod away from the guide plate, which is connected by screws. A sensor grid parallel to the support is installed on the side of the support away from the measuring rod. When the measuring rod moves, it drives the sensor grid to move within the main body, the lower sleeve, and the upper sleeve.

[0019] The advantages of adopting the above-mentioned further solution are: the sensor grid is one of the core components of the meter measurement system. The support plate and the measuring rod are connected by screws, and then the sensor grid is installed on the support plate. The structure is simple and the assembly difficulty is reduced. Attached Figure Description

[0020] Figure 1 This is a front view of a scale structure according to the present invention;

[0021] Figure 2 This utility model provides a scale structure. Figure 1 Sectional view of AA;

[0022] Figure 3 This is a rear view of a scale structure according to the present invention;

[0023] Figure 4This is a top view of a measuring instrument structure of this utility model after removing the exhaust valve and cover;

[0024] Figure 5 This is an isometric view of a scale structure according to the present invention;

[0025] Figure 6 This is an exploded view of a scale structure according to the present invention;

[0026] Figure 7 This is an isometric view of the main body of a scale structure according to the present invention;

[0027] Figure 8 This is a front view of a scale structure guide plate according to the present invention.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Main body; 101. Straight groove; 102. Guide mounting hole;

[0030] 2. Upper bushing, 201, circular opening;

[0031] 3. Lower sleeve, 4. Lower bushing, 5. Measuring rod, 6. Guide rod

[0032] 7. Guide plate, 701. Guide groove, 702. Threaded hole;

[0033] 8. Upper sleeve; 9. Air valve; 10. Tail cap; 11. Support plate; 12. Sensor grid.

[0034] 13. Guide mounting screws. Detailed Implementation

[0035] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0036] like Figures 1 to 8 The illustrated gauge structure includes a main body 1, an upper sleeve 2, a lower sleeve 3, a lower sleeve 4, a measuring rod 5, a guide rod 6, and a guide plate 7. The main body 1 is a cylindrical structure. The upper sleeve 2 is fixedly mounted vertically at its upper end, and the lower sleeve 3 is fixedly mounted vertically at its lower end. The lower sleeve 4, concentric with the lower sleeve 3, is fixedly mounted at the lower end of the lower sleeve 3. The measuring rod 5, which slides axially, is disposed within the shaft holes of the upper sleeve 2 and the lower sleeve 4. The upper end of the measuring rod 5 extends upward out of the upper sleeve 2, and the lower end extends downward through the lower sleeve 3 and downward below the lower sleeve 4. A guide rod 6, vertically positioned with one end protruding from the measuring rod 5, is fixedly mounted in the middle of the measuring rod 5. The guide plate 7, connected by a thread, is disposed on the side of the main body 1 near the guide rod 6.

[0037] In the above embodiment, the guide plate 7 is provided with a guide groove 701 arranged along the length direction of the measuring rod 5 on the end face facing the measuring rod 5. The end of the guide rod 6 protruding from the measuring rod 5 extends into the guide groove 701 and is tangent to both sides of the guide groove 701. The guide rod 6 and the guide groove 701 restrict the radial swing of the measuring rod 5.

[0038] In the above embodiment, the main body 1 is provided with a straight groove 101 that connects the upper and lower ends of the main body near the guide plate 7. The guide plate 7 passes through the straight groove 101 from the outer side of the upper bushing 2 and is inserted into the main body 1. It is connected and installed on the bottom of the straight groove 101 by fastening screws.

[0039] In the above embodiment, the end face of the main body 1 near the guide plate is provided with four sets of guide mounting holes 102 and guide mounting screws 13, and one end of the guide plate 7 is provided with four threaded holes 702. The guide plate 7 is fixedly connected to the main body 1 through the four sets of guide mounting holes 102, the guide mounting screws 13 and the threaded holes 702.

[0040] In the above embodiment, the upper bushing 2 is cuboid in shape, and one end face is provided with an open circular opening 201 shaped like the letter "C". The measuring rod 5 passes through the circular opening 201 and is slidably connected to the upper bushing 2. The cylindrical surface of the measuring rod 5 protrudes from the upper bushing 2 towards the opening side of the circular opening 201.

[0041] In the above embodiment, a cylindrical upper sleeve 8 is provided at the upper end of the main body 1 and the upper sleeve 2. A tail cap 10 connected by a thread is provided at the upper end of the upper sleeve 8 away from the main body 1. A cylindrical air valve 9 is provided inside the upper sleeve 8 and is fixedly connected to the upper end of the measuring rod 5. The air valve 9 is in clearance fit with the upper sleeve 8 and moves between the upper sleeve 2 and the tail cap 10 under the drive of the measuring rod 5.

[0042] In the above embodiment, the side of the measuring rod 5 away from the guide plate 7 is provided with a square plate structure support plate 11 fixedly connected by screws. The side of the support plate 11 away from the measuring rod 5 is equipped with a sensor grid 12 parallel to the support plate 11. When the measuring rod 5 moves, it drives the sensor grid 12 to move within the main body 1, the lower sleeve 3 and the upper sleeve 8.

[0043] In practical applications, this embodiment offers several advantages. First, the circular main body and the tubular structure of the upper and lower copper sleeves facilitate easier machining and assembly, and ensure the concentricity of the shaft holes in the upper and lower sleeves. Second, the hollow structure inside the tubular structure provides sufficient movement space for the measuring rod, spring, and stationary grid, reducing the overall size and weight of the product. The guide rod in the middle of the measuring rod and the guide plate on one side of the main body effectively limit the radial offset of the measuring rod, ensuring that it can only move linearly along the axial direction without radial wobbling, tilting, or jamming, thus guaranteeing the product's measurement accuracy. The guide plate is fixedly connected by threads, facilitating guidance and adjustment, ensuring smooth movement of the measuring rod, maintaining stable measurement performance, reducing size, and lowering production costs.

[0044] In this embodiment, the measuring rod moves linearly within the upper and lower bushings under the constraint of the guide rod and guide groove, without generating radial offset, reducing vibration and shaking, improving the overall stability of the product, ensuring the measurement accuracy of the product, and extending its service life.

[0045] In this embodiment, the straight groove connecting the upper and lower ends inside the main body facilitates the installation of the guide plate by inserting it into the main body from the outer side of the upper bushing. The guide plate does not need to be installed from the front or back, which ensures the stability of the product structure while effectively reducing the product volume.

[0046] In this embodiment, the guide plate and the main body are fixedly connected by four sets of threaded structures, which facilitates the adjustment of the parallelism between the guide groove and the measuring rod and ensures that the measuring rod moves smoothly.

[0047] In this embodiment, the upper bushing is provided with an open circular opening, and one side of the measuring rod protrudes from the upper bushing, so that the support plate and the fixed grid can be moved into the upper sleeve at the upper end of the upper bushing. This ensures smooth movement of the measuring rod while shortening the length of the measuring rod and the product, thereby reducing production costs.

[0048] In this embodiment, the upper sleeve, the air valve, and the tail cap form a semi-enclosed space. The air valve moves up and down inside the upper sleeve under the drive of the measuring rod. Since there is a small gap between the upper sleeve and the air valve, the air pressure changes slowly in the space, which can smoothly decelerate the measuring rod, prevent rigid impact, reduce noise and protect the equipment, and at the same time avoid excessive speed that could cause measurement data to become disordered or lost.

[0049] In this embodiment, the sensor grating is one of the core components of the meter measurement system. The support plate and the measuring rod are connected by screws, and then the sensor grating is installed on the support plate. The structure is simple and the assembly difficulty is reduced.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A scale structure, characterized in that: The system includes a main body (1), an upper bushing (2), a lower sleeve (3), a lower bushing (4), a measuring rod (5), a guide rod (6), a guide plate (7), and an upper sleeve (8). The upper bushing (2) is fixedly arranged vertically at the upper end of the main body (1), and the lower sleeve (3) is fixedly arranged vertically at the lower end. The lower bushing (4) is fixedly arranged concentrically with the lower sleeve (3) at the lower end of the lower sleeve (3). The measuring rod (5) is axially sliding in the shaft holes of the upper bushing (2) and the lower bushing (4). The upper end of the measuring rod (5) extends upward out of the upper bushing (2), and the lower end extends downward through the lower sleeve (3) and downward out of the lower bushing (4). The guide rod (6) is fixedly arranged vertically in the middle of the measuring rod (5) and protrudes from the measuring rod (5) at one end. The guide plate (7) is provided on the side of the main body (1) near the guide rod (6) by a threaded connection.

2. The scale structure according to claim 1, characterized in that: The guide plate (7) has a guide groove (701) arranged along the length of the measuring rod (5) on the end face facing the measuring rod (5). The end of the guide rod (6) protruding from the measuring rod (5) extends into the guide groove (701) and is tangent to both sides of the guide groove (701). The guide rod (6) and the guide groove (701) restrict the radial swing of the measuring rod (5).

3. The scale structure according to claim 1, characterized in that: The main body (1) has a straight groove (101) connecting the upper and lower ends of the main body near the guide plate (7). The guide plate (7) passes through the straight groove (101) from the outer side of the upper bushing (2) and is inserted into the main body (1) and installed on the bottom of the straight groove (101) by fastening screws.

4. The scale structure according to claim 3, characterized in that: The main body (1) has a guide mounting hole (102) and a guide mounting screw (13) on the end face near the guide plate. The guide plate (7) has a threaded hole (702) at one end. The guide plate (7) is fixedly connected to the main body (1) through the guide mounting hole (102), the guide mounting screw (13) and the threaded hole (702).

5. The scale structure according to claim 1, characterized in that: The upper bushing (2) is provided with an open circular opening (201) shaped like the letter "C". The measuring rod (5) passes through the circular opening (201) and is slidably connected to the upper bushing (2). The cylindrical surface of the measuring rod (5) protrudes from the upper bushing (2) on the side of the opening of the circular opening (201).

6. The scale structure according to claim 1, characterized in that: The upper ends of the main body (1) and the upper bushing (2) are provided with a cylindrical upper sleeve (8). The upper end of the upper sleeve (8) away from the main body (1) is provided with a tail cap (10) connected by a thread. The upper sleeve (8) is provided with a cylindrical air valve (9) fixedly connected to the upper end of the measuring rod (5). The air valve (9) and the upper sleeve (8) are fitted with a clearance and move between the upper bushing (2) and the tail cap (10) under the drive of the measuring rod (5).

7. The scale structure according to claim 1, characterized in that: The side of the measuring rod (5) away from the guide plate (7) is provided with a square plate structure support plate (11) connected by screws. The side of the support plate (11) away from the measuring rod (5) is equipped with a sensor grid (12) parallel to the support plate (11). When the measuring rod (5) moves, it drives the sensor grid (12) to move within the main body (1), the lower sleeve (3) and the upper sleeve (8).

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