Limiting support for testing indication error of instrument indicator

Abstract

The utility model discloses a limiting support for testing the indication error of an instrument indicator, and the support comprises a front observation plate which is provided with a front observation window covering the scale of a dial plate. And one end face of the front observation plate is provided with a mounting structure matched with a mounting hole of the instrument indicator. By arranging the front observation plate with the front observation window, the front observation plate is connected with the instrument indicator, and the front observation window covers the scales of the whole dial plate, so that the sight of a tester emphatically observes and tests through the front observation window, and the sight of the tester is locked; inaccuracy of indication error test of the instrument indicator caused by errors of different sight directions is avoided, and test accuracy is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of instrument test, specifically relates to a limiting support for instrument indicator indicating error test. BACKGROUND

[0002] The instrument indicator is an important equipment widely applied in the fields of industry, traffic, military and the like, and its main functions include display, measurement, control and record, and provides accurate and efficient data support for the development of various industries. With the advent of modernization, the instrument indicator has developed towards the direction of more intelligent, miniaturization and networking, but it cannot be ignored that the traditional instrument indicator (such as a direct current voltage indicator) is still an indispensable part of some industries and plays an advantageous role in application scene, function implementation and production manufacturing.

[0003] The traditional instrument indicator has relatively high indicating accuracy requirement for the indicator pointer in actual application, and the indicating error between the indicating indication number of the pointer and the scale number on the dial needs to be controlled within a reasonable range during production, so the indicating indication number of the pointer on the dial and the scale number on the dial need to be tested and compared during production to ensure the indicating accuracy of the pointer. At present, the debugging and measurement of the accuracy of the instrument indicator still need to rely on the visual observation of the test personnel, and the visual testing method can cause visual displacement error between the indicating indication number of the indicator pointer and the scale number on the dial due to the different visual line directions of the test personnel, thereby leading to the non-compliance of the indicating accuracy of the instrument indicator. Especially for some instrument indicators with special structure (such as a direct current voltage indicator), the scale on the dial is printed on a plane, and the movement of the pointer during indication is circular arc movement. The instrument indicator with such structure is prone to cause increased testing error due to the different visual line directions of the test personnel during indicating error test. Therefore, the indicating error test of the instrument indicator with such special structure needs to be solved as soon as possible by technical personnel. CONTENT OF THE UTILITY MODEL

[0004] To solve the above technical problems, the utility model provides a limiting support for instrument indicator indicating error test, which comprises a front observation plate, the front observation plate has a front observation window covering the dial scale, and one end surface of the front observation plate has a mounting structure matched with the mounting hole of the instrument indicator. By arranging the front observation plate with the front observation window, the front observation plate is connected with the instrument indicator, the front observation window covers the entire dial scale, the visual line of the test personnel is focused on the front observation window for observation and test, the visual line of the test personnel is locked, the inaccuracy of the instrument indicator indicating error test caused by the error of the different visual line directions is avoided, and the accuracy of the test is improved.

[0005] In an embodiment, the mounting structure comprises a plurality of fixing grooves evenly arranged on the end surface of the front observation plate around the front observation window, and a fixing pin matched with the fixing grooves, the fixing pin being detachably arranged with the mounting hole.

[0006] In an embodiment, the cross section of the fixing groove is T-shaped, one end of the fixing pin is embedded in the fixing groove and arranged along the fixing groove, and the other end of the fixing pin is provided with external threads and matched with a nut through the mounting hole. By arranging the fixing pin along the fixing groove and the nut thread combination, the mounting and dismounting are convenient and suitable for different sizes of instrument indicators.

[0007] In an embodiment, the plurality of fixing grooves are radially scattered around the center point of the front observation window. By this arrangement, the front observation window is coaxially arranged with the dial of the instrument indicator, further avoiding the inaccuracy of the test caused by the deviation of the line of sight.

[0008] In an embodiment, a rear observation plate connected with the front observation plate through a telescopic assembly is further included, and a rear observation window opposite to the front observation window is arranged on the rear observation plate. By arranging the rear observation plate with the rear observation window connected through the telescopic assembly, the test use of different distances can be realized, which can avoid the test influence caused by the deviation of the line of sight and further test close to the real use scene, suitable for various scenes and diversified functions.

[0009] In an embodiment, a first sliding groove and a second sliding groove are respectively formed on the opposite two side walls of the rear observation window; a limiting observation plate provided with a limiting observation port is further included, and a sliding handle and a limiting structure are formed on the two sides of the limiting observation plate, one end of the limiting observation plate passes through the first sliding groove into the second sliding groove and is limited by the limiting structure, and at least a part of the sliding handle is located outside the first sliding groove. By arranging the limiting observation plate in the first sliding groove and the second sliding groove and arranging the limiting observation port on the limiting observation plate, the position of the observation port is further limited, which further limits the position of the test observation port and realizes the test of fixed position; further, by arranging the first sliding groove and the second sliding groove, the limiting observation plate can slide in the sliding grooves and be fixed at the corresponding positions, which can realize the test of the scale error of different positions on the dial of the same instrument indicator, and the test effect is better.

[0010] In an embodiment, the limiting structure is a threaded hole arranged on the limiting observation plate, and a fixing bolt is screwed into the threaded hole through the second sliding groove. By arranging the screw combination, the fixing of the limiting observation plate is more convenient.

[0011] In an embodiment, the telescopic assembly comprises a plurality of groups of telescopic units arranged uniformly in a circumferential direction, each telescopic unit comprising a connecting rod detachably connected with the front observation plate or the rear observation plate, and a connecting rod sleeve detachably connected with the rear observation plate or the front observation plate, the connecting rod being provided with a plurality of connecting rod holes, the connecting rod sleeve being provided with a plurality of connecting rod sleeve holes, the connecting rod being inserted into the connecting rod sleeve and matched with the connecting rod holes and the connecting rod sleeve holes through a connecting pin. By arranging the telescopic assembly as a combination of the connecting rod and the connecting rod sleeve, it is more convenient and easier to adjust the distance between the front observation plate and the rear observation plate, and the circumferential uniform arrangement of the plurality of telescopic units can ensure the positioning effect of the front observation window and the rear observation window, thereby ensuring the test result.

[0012] In an embodiment, the connecting pin comprises a connecting bolt. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application, the drawings needed in the specific embodiments will be briefly introduced as follows. Obviously, the drawings described in the following are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0014] Figure 1 is a structural schematic view of a limiting support for instrument indicator indication error test according to the present application;

[0015] Figure 2 is a structural schematic view of another limiting support for instrument indicator indication error test according to the present application;

[0016] Figure 3 is a structural schematic view of a rear observation plate according to the present application;

[0017] Figure 4 is a structural schematic view of the rear observation plate according to the present application in another direction;

[0018] Figure 5 is a structural schematic view of a limiting observation plate according to the present application;

[0019] Figure 6 is a use state view of a limiting support for instrument indicator indication error test according to the present application;

[0020] Figure 7 is a use state view of the limiting support for instrument indicator indication error test according to the present application in another direction;

[0021] The reference signs in the drawings represent: 1-front observation plate; 2-front observation window; 3-instrument indicator; 5-fixing groove; 6-fixing pin; 7-nut; 8-rear observation plate; 9-rear observation window; 11-first sliding groove; 12-second sliding groove; 13-limiting observation port; 14-limiting observation plate; 15-sliding handle; 16-threaded hole; 17-fixing bolt; 18-connecting rod; 19-railing sleeve; 20-connecting rod hole; 21-connecting rod sleeve hole; 22-connecting pin. DETAILED DESCRIPTION

[0022] The content of the present application will be described below in connection with the drawings, obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. In view of the embodiments in the present application, other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] In the description of the present application, it should be pointed out that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0024] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0026] Example 1

[0027] As Figure 1As shown, this embodiment discloses a limiting bracket for testing the indication error of an instrument indicator, which includes a front observation plate 1. The structure of the front observation plate 1 is not specifically limited. In this embodiment, the front observation plate 1 is a square structure with chamfered corners. The front observation plate 1 has a front observation window 2 covering the dial scale. The structure of the front observation window 2 is not specifically limited. In this embodiment, the front observation window 2 is a circular through hole that allows observation of all the dial scales. One end face of the front observation plate 1 has a mounting structure that mates with the mounting hole of the instrument indicator 3. Specifically, the mounting structure includes a plurality of fixing grooves 5 evenly arranged around the front observation window 2 on the end face of the front observation plate 1, and fixing pins 6 that mate with the fixing grooves 5. The fixing pins 6 are detachably connected to the mounting holes 5. Preferably, the cross-section of the plurality of fixing grooves 5 is T-shaped. One end of the fixing pin 6 is embedded in the fixing groove 5 and slides along the fixing groove 5. The other end of the fixing pin 6 is provided with external threads and passes through the mounting hole to mate with a nut. See reference for details. Figure 6 and Figure 7 .

[0028] In one embodiment, a plurality of the fixing slots 5 are arranged radially radiating from the center point of the front observation window 2. In this embodiment, there are four fixing slots 5 and four fixing pins 6, which cooperate with the four mounting holes of the instrument indicator. Since the fixing pins 6 can slide along the fixing slots, they can accommodate dials of different diameters of the instrument indicator.

[0029] In one implementation, such as Figure 2 As shown, it also includes a rear observation plate 8 connected to the front observation plate 1 via a telescopic assembly. The rear observation plate 8 is provided with a rear observation window opposite to the front observation window 2. The structure of the rear observation plate 8 is not specifically limited, but preferably it is a square structure with a chamfered structure. The structure of the rear observation window 9 is not specifically limited, but preferably it is a square or rectangular shape. The rear observation plate 8 and the front observation plate 1 are connected via a telescopic assembly, and the dial seen in the front observation window 2 can be observed through the rear observation window 9.

[0030] As for the telescopic assembly, its structure is not limited in particular, specifically, the telescopic assembly comprises multiple groups of telescopic units arranged uniformly in the circumferential direction, each telescopic unit comprises a railing 18 detachably connected with the front observation plate 1 or the rear observation plate 8, and a connecting rod sleeve 19 detachably connected with the rear observation plate 8 or the front observation plate 1, in the embodiment, the railing 18 is detachably connected to the front observation plate 1, and the connecting rod sleeve 19 is detachably connected to the rear observation plate 8, one end of the connecting rod 18 is formed with a threaded portion, a threaded hole is formed on the front observation plate 1, and the connecting rod 18 is screwed into the threaded hole; one end of the connecting rod sleeve 19 is formed with a threaded portion, a through hole is formed on the rear observation plate 8, and the threaded portion of the connecting rod sleeve 19 passes through the through hole and is connected by using a nut; a plurality of connecting rod holes 20 are arranged on the connecting rod 18, a plurality of connecting rod sleeve holes 21 are arranged on the connecting rod sleeve 19, and one end of the connecting rod 18, which is away from the threaded portion, is inserted into one end of the connecting rod sleeve 19, which is away from the threaded portion, and is matched with the connecting rod hole 20 and the connecting rod sleeve hole 21 by using a connecting pin 22. Specifically, the connecting pin 22 is preferably a connecting bolt structure, which can be inserted and fixed by using a nut. The connecting rod hole 19 and the connecting rod sleeve 20 are a plurality of corresponding combinations.

[0031] In one embodiment, as shown in Figures 3-5 On both side walls of the rear observation window 9, first and second sliding grooves 11 and 12 are respectively formed opposite to each other, and a limiting observation plate 14 for limiting an observation opening 13 is arranged, limiting structures are formed on both sides of the limiting observation plate 14, one end of the limiting observation plate 14, which is provided with the limiting structures, passes through the first sliding groove 11 and enters the second sliding groove 12, and the position of the limiting observation plate 14 is limited by the limiting structures, and at least a part of the sliding handle 15 is located outside the first sliding groove 11. That is, after the limiting observation plate 14 is fixed, the height of the limiting observation opening 13 located in the rear observation window 9 can be adjusted, the limiting structure is loosened, the limiting observation plate 14 is slid along the first sliding groove 11 through the sliding handle 15, and then the limiting structure is fixed, so that the limiting observation opening 13 can be adjusted, and the structure of the limiting observation opening 13 is preferably a long strip structure. Further, the limiting structure is a threaded hole 16 arranged on the limiting observation plate 14, a fixing bolt 17 passes through a part of the second sliding groove 12 and is screwed into the threaded hole 16, and in this arrangement, the cross section of the second sliding groove 12 is T-shaped, so as to facilitate the fixing bolt 17 to be screwed into the threaded hole 16 for fixation.

[0032] The use process of the utility model is as follows:

[0033] By fixing the instrument indicator 3 on the front observation plate 1, adjusting the distance between the front observation plate 1 and the rear observation plate 8, adjusting the position of the limiting observation plate 14, and finally detecting the dial scale of the instrument indicator 3 through the limiting observation opening 13.

[0034] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A limit bracket for use in testing for instrument indicator indication error, characterized by, The front observation plate has a front observation window covering the dial scale; one end surface of the front observation plate has a mounting structure matched with a mounting hole of the instrument indicator; the rear observation plate is connected with the front observation plate through a telescopic assembly, and the rear observation plate is provided with a rear observation window opposite to the front observation window; the telescopic assembly includes a plurality of groups of telescopic units arranged uniformly in the circumferential direction, each telescopic unit includes a connecting rod detachably connected with the front observation plate or the rear observation plate, and a connecting rod sleeve detachably connected with the rear observation plate or the front observation plate; the connecting rod is provided with a plurality of connecting rod holes, the connecting rod sleeve is provided with a plurality of connecting rod sleeve holes, the connecting rod is inserted into the connecting rod sleeve, and the connecting rod is matched with the connecting rod hole and the connecting rod sleeve hole through a connecting pin.

2. The limit bracket for instrument indicator error testing of claim 1, wherein, The mounting structure includes a plurality of fixing grooves arranged uniformly on the end surface of the front observation plate around the front observation window, and a fixing pin matched with the fixing groove, the fixing pin is detachably arranged with the mounting hole.

3. The limit bracket for instrument indicator error testing of claim 2, wherein, The cross section of the fixing groove is T-shaped, one end head of the fixing pin is embedded in the fixing groove and arranged slidingly along the fixing groove, the other end head of the fixing pin is provided with external threads, and passes through the mounting hole and is matched with a nut.

4. The limit bracket for instrument indicator error testing of claim 2, wherein, A plurality of fixing grooves are arranged radially with the center point of the front observation window.

5. The limit bracket for testing the indication error of an instrument indicator according to any one of claims 1 to 4, characterized in that, First and second sliding grooves are respectively formed on the opposite two side walls of the rear observation window; a limiting observation plate provided with a limiting observation opening is further included, the limiting observation plate is provided with a sliding handle and a limiting structure on two sides, one end of the limiting observation plate passes through the first sliding groove into the second sliding groove and is limited by the limiting structure, and at least a part of the sliding handle is located outside the first sliding groove.

6. The limit bracket for instrument indicator error testing of claim 5, wherein, The limiting structure is a threaded hole arranged on the limiting observation plate, and a fixing bolt is screwed into the threaded hole through the second sliding groove.

7. The limit bracket for instrument indicator error testing of claim 5, wherein, The connecting pin includes a connecting bolt.

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