Metro train brake pad measuring device

Abstract

A subway train brake pad measuring device comprises a measuring main ruler and a measuring auxiliary ruler, first scale marks are engraved or printed on a ruler body of the measuring main ruler in the length direction, a measuring positioning ejector pin is arranged at the end, close to the zero scale, of the measuring main ruler, and the front end of the measuring auxiliary ruler is perpendicularly connected with a plane positioning block. A main ruler mounting guide rail is coaxially arranged in the auxiliary measuring ruler and the plane positioning block, a measuring reading window is vertically arranged on the surface of the auxiliary measuring ruler, a second scale mark is engraved or printed on the surface of the auxiliary measuring ruler on one side of the measuring reading window, and the main measuring ruler penetrates through the main ruler mounting guide rail and is movably connected with the auxiliary measuring ruler; the two sides of the plane positioning block are pinched, the measurement reading window faces the plane positioning block, the plane positioning block is tightly and horizontally attached to the outer surface of the brake pad, the measurement main ruler is slowly pushed till the measurement positioning ejector pin makes full contact with the point position needing to be measured, the measurement main ruler is stabilized, and the measurement reading window is visually observed to read the numerical value. The whole use process is simple, the reading is direct, the measurement efficiency is improved, and the measurement precision is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the subway vehicle brake system brake pad thickness and gap measurement technical field, in particular to a subway train brake pad measuring device. BACKGROUND

[0002] At present, in Xi'an subway line 16 vehicle braking system, according to the maintenance operation instruction book relevant requirements, the vehicle brake pad thickness is not less than 5mm, and the gap between brake pad and brake disc in the relief state is 1-4mm. Steel ruler is generally used for measurement, and when measuring narrow space, auxiliary measurement is needed with bending mouth forceps, and there is a large measurement error.

[0003] When measuring, the steel ruler is large in size, and the measurement angle is not easy to read directly, and there is a large measurement error in reading. SUMMARY

[0004] In order to overcome the above-mentioned deficiencies of prior art, the utility model discloses a subway train brake pad measuring device, the front end of the measuring main ruler is provided with a measuring positioning thimble, the front end of the measuring auxiliary ruler is vertically connected with a plane positioning block, and the groove on the surface of the main ruler installation guide rail is provided with a main ruler movable support plate for supporting the measuring main ruler, which can meet the requirements of narrow space, brake pad thickness and gap multifunctional measurement, and is easy to read directly and high in precision, light in weight, small in size and convenient to carry.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0006] A subway train brake pad measuring device, comprising a measuring main ruler 1 and a measuring auxiliary ruler 4, the measuring main ruler 1 is along the length direction, and the first scale line is engraved or printed on the ruler, the first scale line range is 5cm, and there are 10 scale lines, the division value is 0.1cm, the measuring main ruler 1 is provided with a measuring positioning thimble 2 close to the 0 scale end, the front end of the measuring auxiliary ruler 4 is vertically connected with a plane positioning block 5, the coaxial main ruler installation guide rail 7 is arranged in the measuring auxiliary ruler 4 and the plane positioning block 5, the measuring data reading window 3 for reading the measuring main ruler 1 is vertically arranged on the surface of the measuring auxiliary ruler 4, the second scale line is engraved or printed on the surface of the measuring auxiliary ruler 4 on one side of the measuring data reading window 3, the second scale line is 10 degrees, and the corresponding accuracy is 1mm / 10=0.1mm, and the measuring main ruler 1 is movably connected with the measuring auxiliary ruler 4 through the main ruler installation guide rail 7.

[0007] The measuring data reading window 3 is long oval type as a whole, the groove is arranged on the surface of the main ruler installation guide rail 7 below the measuring data reading window 3, and the main ruler movable support plate 6 matched with the groove is arranged in the groove.

[0008] The length of the main ruler movable support plate 6 is less than the length of the measurement reading window 3.

[0009] The plane positioning block 5 is a rectangular horizontal block with a thickness of 2 mm, and the plane positioning block 5 is integrally designed with the measurement auxiliary ruler 4.

[0010] The connection between the measurement auxiliary ruler 4 and the plane positioning block 5 is a circular arc structure, forming a handheld gripping part 8, and the central angle of the handheld gripping part 8 is 60°-80°, and the radian is 1.2°-1.6°.

[0011] Compared with the prior art, the utility model has the beneficial effects of:

[0012] 1. For the occurrence of block falling and edge collapse of the brake pad, the measurement tool has a fine to specific point measurement requirement, therefore, the utility model discloses a measurement positioning thimble 2 arranged at the front end of the measurement main ruler 1, so as to further improve the measurement accuracy, and the special block falling and edge collapse condition is well adapted, and the universality of the device is improved.

[0013] 2. Since abnormal wear of the measurement main ruler 1 may occur during use, the measurement accuracy is reduced, therefore, the utility model discloses that the main ruler movable support plate 6 is arranged in the groove arranged on the surface of the main ruler installation guide rail 7, and is used for supporting the measurement main ruler 1, and the whole is made of ZGMn13 high manganese steel wear-resistant material, so that the wear of the measurement main ruler 1 is greatly reduced, and the service life of the measurement main ruler 1 is prolonged.

[0014] 3. After the brake pad is worn for a long time, the brake pad is prone to eccentric wear, so that the wear layer attached to the brake disc is uneven, the utility model discloses that the plane positioning block 5 is vertically connected to the front end of the measurement auxiliary ruler 4, can be closely contacted with the non-wear surface of the brake pad, ensures the accuracy of measurement, and improves the overall measurement accuracy.

[0015] 4. The utility model discloses that the handheld part is specially designed, as shown in the drawings, the handheld gripping part 8 with a circular arc structure is arranged at the connection between the measurement auxiliary ruler 4 and the plane positioning block 5, and the chamfer design is in line with the ergonomic design, so that the maintenance personnel can comfortably and firmly pinch the device when using, the measurement process stability and the measurement accuracy are improved, and when the number of measured objects is large during long-term measurement, the physical consumption of the maintenance personnel is also reduced, and the work efficiency is improved. Figure 2

[0016] In summary, the utility model has the advantages of simple use, direct reading, improved measurement accuracy, actual operation demand, use in any small space, improved on-site operation efficiency, improved measurement process stability and measurement accuracy, reduced physical consumption of maintenance personnel, and improved overall work efficiency. ​BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the structural schematic diagram of the measurement main ruler 1 of the utility model.

[0018] Figure 2 is the structural schematic diagram of the measurement auxiliary ruler 4 of the utility model.

[0019] Figure 3 is the general assembly schematic diagram of the subway train brake pad measuring device of the utility model.

[0020] Figure 4 is the side view of the utility model.

[0021] Figure 5 is the longitudinal sectional view of the measurement auxiliary ruler 4 of the utility model.

[0022] In the figure: 1, measurement main ruler; 2, measurement positioning thimble; 3, measurement reading window; 4, measurement auxiliary ruler; 5, plane positioning block; 6, main ruler movable support plate; 7, main ruler installation guide rail; 8, handheld gripping part. DETAILED DESCRIPTION

[0023] The utility model will be further explained in detail in combination with the drawings.

[0024] A subway train brake pad measuring device, including measurement main ruler 1 and measurement auxiliary ruler 4, as shown in Figure 1 The measurement main ruler 1 is a rectangular plate of cuboid, and a first scale line is engraved or printed on the ruler along the length direction, the range of the first scale line is 5cm, there are 10 scale lines in total, and the division value is 0.1cm; a measurement positioning thimble 2 is arranged at the end close to the 0 scale of the first scale line, the measurement positioning thimble 2 is an integral molded piece with the measurement main ruler 1, and is used for accurately positioning the measurement point when measuring the brake pad gap and the brake pad thickness; as shown in Figure 2 The front end of the measurement auxiliary ruler 4 is vertically connected with a plane positioning block 5, a main ruler installation guide rail 7 is coaxially arranged in the measurement auxiliary ruler 4 and the plane positioning block 5, a measurement reading window 3 for reading the measurement data of the measurement main ruler 1 is vertically arranged on the surface of the measurement auxiliary ruler 4, and the measurement main ruler 1 is movably connected with the measurement auxiliary ruler 4 by penetrating through the main ruler installation guide rail 7; a second scale line is engraved or printed on the surface of the measurement auxiliary ruler 4 on the side of the measurement reading window 3, the second scale line is 10 divisions, and the corresponding accuracy is 1mm / 10=0.1mm.

[0025] As shown in Figure 3As shown, the measuring main ruler 1 is movably installed in the middle hollow part of the plane positioning block 5 through the main ruler installation guide rail 7, and the extension length of the measuring main ruler 1 can be adjusted to adapt to the measurement requirements of different standard gate blades. The measuring positioning needle 2 at the front end of the measuring main ruler 1 can accurately position the measurement point for specific point measurement, thereby improving the accuracy of the overall measurement. The measuring main ruler 1 is made of stainless steel, and the scale is laser-scribed. It has good adaptability to harsh measurement environments, and the measurement accuracy is 0.1 mm, which can meet the measurement requirements.

[0026] As shown in Figure 2 The measuring reading window 3 is in the shape of an oblong, and the surface of the main ruler installation guide rail 7 below the measuring reading window 3 is provided with a groove in which a main ruler movable support plate 6 is placed. The main ruler movable support plate 6 is used to support the measuring main ruler 1 for movement. The main ruler movable support plate 6 is made of ZGMn13 high-manganese steel wear-resistant material, which can prevent the measuring main ruler 1 from being affected by wear during movement and affecting the measurement accuracy.

[0027] The main ruler movable support plate 6 is installed in the groove on the surface of the main ruler installation guide rail 7 to form a movable assembly for supporting the measuring main ruler 1. The measuring reading window 3 is used to measure the measurement data of the measuring main ruler 1.

[0028] The length of the main ruler movable support plate 6 is less than the length of the measuring reading window 3.

[0029] The plane positioning block 5 can fully contact the outer surface of the gate blade horizontally to ensure that the horizontal reference surface during the measurement of the gap and thickness of the gate blade is uniform.

[0030] The plane positioning block 5 is a 2mm thick rectangular horizontal block, and the plane positioning block 5 and the measuring auxiliary ruler 4 are designed in one piece to tightly fit the horizontal surface of the gate blade and provide stability during the movement of the measuring main ruler 1.

[0031] The connection between the measuring auxiliary ruler 4 and the plane positioning block 5 is in the shape of a circular arc to form a handheld gripping part 8. The central angle of the handheld gripping part 8 is 60°-80°, and the radian is 1.2°-1.6°, which can better fit the human hand and make it easier for the measurement personnel to hold the device more firmly and stably.

[0032] The chamfer design of the handheld gripping part 8 is in accordance with the ergonomic design, which is convenient for the maintenance personnel to use the device comfortably and firmly, and improves the stability and measurement accuracy during the measurement process.

[0033] The utility model discloses a simple structure design is used, satisfy the measurement demand, simplify the measurement process and the measurement operation. For the narrow field operation environment, the overall specification of the device is standardized. For the large base of the measured object, the measurement tool is easy to fall and damage, the hand holding part 8 is chamfered according to the ergonomic design, the device is conveniently and firmly held by the hand of the maintenance personnel, the measurement process stability and the measurement precision are improved, when the long -term measurement and the measured object quantity are more, it is also favorable to reduce the physical consumption of the maintenance personnel, and the work efficiency is improved.

[0034] The measurement vice ruler 4 is combined with the measurement reading window 3, data measurement can be carried out, and reading is carried out on the measurement main ruler 1 value first, and then fine reading is carried out in combination with the measurement vice ruler 4.

[0035] As shown in Figure 3 The measurement main ruler 1 and the measurement positioning thimble 2 are combined and installed through the main ruler installation guide rail 7 and the measurement vice ruler 4, and the device can be used for measurement. The unique plane positioning block 5 can fully contact the outer surface of the brake pad, so that the accuracy of the measurement reference is ensured, and the measurement precision is improved.

[0036] As shown in Figure 4 The main ruler installation guide rail 7 reserved in the plane positioning block 5 is completely matched with the size of the measurement main ruler 1, and the installation operation will not be stuck or unable to install. The thickness of the plane positioning block 5 is very high, which provides a high lightness basis for the overall device, so that the device can be used in narrow working environment.

[0037] The utility model discloses a device suitable for measuring the thickness of the brake pad and the gap between the brake pads, which fills the gap of the two measurement operations without special tools. The overall plane design size of the device is not more than 80mm 2 , not less than 60mm 2 , the thickness is not less than 0.5mm, not more than 1mm, which is suitable for narrow space measurement, meets the actual operation requirements, and is beneficial to improve the efficiency of on-site operation.

[0038] The utility model discloses a device overall assembly of subway train brake pad measurement, which is small and light, convenient to carry and suitable for narrow and complex working environment. The measurement main ruler and the measurement vice ruler are made of stainless steel, and the scale is marked by laser, which is accurate, wear-resistant and corrosion-resistant.

[0039] The utility model has the following functions:

[0040] 1. It can be applied to the thickness measurement of brake pad of subway vehicle braking system.

[0041] 2. It can be applied to the clearance measurement between brake pad and brake disc of subway vehicle braking system.

[0042] The working principle of the utility model is:

[0043] The utility model discloses a kind of brake pad thickness measuring tools, including measuring main ruler 1, measuring sub ruler 4, measuring reading window 3 and measuring positioning needle 2, measuring main ruler 1 is connected with measuring sub ruler 4, measuring sub ruler 4 is connected with measuring reading window 3, measuring reading window 3 is connected with measuring positioning needle 2, measuring main ruler 1 is connected with plane positioning block 5, plane positioning block 5 is connected with brake pad outer surface, and measuring positioning needle 2 is connected with brake disc surface. The utility model is through the full horizontal contact of plane positioning block 5 and brake pad outer surface, perpendicular to brake disc direction, promote measuring main ruler 1, so that measuring positioning needle 2 is contacted with brake disc surface or with brake pad inner surface flush, can take down the utility model as a whole, through measuring reading window 3 from top to bottom vertical vision, use the 0 scale line of measuring sub ruler 4 to align the scale line of measuring main ruler 1, read the numerical value of measuring main ruler 1 (for example: 23mm), then through the observation of measuring sub ruler 4 and measuring main ruler 1 coincident scale line, read the numerical value of measuring sub ruler 4 (for example: 0.7mm), combine the numerical value of measuring main ruler 1 and the numerical value of measuring sub ruler 4 to obtain final measurement value (for example: 23.7mm), and then read the thickness of brake pad and the clearance size between brake pad and brake disc, whole use process is simple, reading is direct, convenient to improve measurement efficiency and guarantee measurement accuracy.

Claims

1. A subway train brake pad measuring device, characterized by, The utility model relates to a kind of subway train brake pad measuring devices, including measuring main ruler (1) and measuring vice ruler (4), the first scale line is engraved or printed on the ruler in length direction, first scale line range is 5cm, a total of 10 scale lines, graduation value is 0.1cm, measuring main ruler (1) is provided with measuring positioning needle (2) close to the end of 0 scale, the front end of measuring vice ruler (4) is vertically connected with plane positioning block (5), coaxially main ruler installation guide rail (7) is set in measuring vice ruler (4) and plane positioning block (5), the surface of measuring vice ruler (4) is vertically set with the measurement reading window (3) for reading the measurement data of measuring main ruler (1), the surface of measuring vice ruler (4) on the side of measurement reading window (3) is engraved or printed with second scale line, second scale line is 10 graduation, its corresponding accuracy is 1mm / 10=0.1mm;Measuring main ruler (1) passes through main ruler installation guide rail (7) and is movably connected with measuring vice ruler (4).

2. The metro brake pad measuring device according to claim 1, wherein, The measurement reading window (3) is long oval as a whole, and the surface of the main ruler installation guide rail (7) below the measurement reading window (3) is provided with a groove, and the groove is placed with a main ruler movable support plate (6) matched therewith.

3. The metro brake pad measuring device according to claim 2, characterized in that, The length of the main ruler movable support plate (6) is less than the length of the measurement reading window (3).

4. The subway train brake pad measuring device according to claim 1, wherein The plane positioning block (5) is a rectangular horizontal block with a thickness of 2mm, and the plane positioning block (5) is designed in an integral manner with the measuring vice ruler (4).

5. The subway train brake pad measuring device according to claim 1 is characterized in that In the present application, The connection between the measuring vice ruler (4) and the plane positioning block (5) is in a circular arc structure, A hand-held gripping part (8) is formed, and the central angle of the hand-held gripping part (8) is 60°-80°, and the radian is 1.2°-1.6°.

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