Rapid measuring tool for brake pad and grinding sub-parameters of motor train unit

Abstract

The utility model discloses a motor train unit brake pad and grinding sub-parameter rapid measuring tool comprising a measuring main body and a positioning block, one end of the measuring main body is convexly provided with a reference plate, and the positioning block is movably installed on the measuring main body and is parallel to the reference plate. The measuring main body is provided with scales for observing the distance between the reference plate and the positioning block; one side surface of the other end of the measurement main body is provided with a gap measurement reference surface, the opposite side surface is provided with a gap measurement surface, the gap measurement surface is provided with a first measurement area, a second measurement area, a third measurement area and a fourth measurement area, and the distances between the first measurement area and the gap measurement reference surface and between the second measurement area and the gap measurement reference surface are matched with the upper limit value and the lower limit value of the gap of the brake pad respectively. And the distances between the third and fourth measurement areas and the gap measurement reference surface are respectively matched with the upper limit value and the lower limit value of the grinding piece. The measuring tool is simple in structure, the corresponding gap and thickness can be measured conveniently, the measurement and maintenance work efficiency is improved, and the maintenance cost and the labor cost are saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of measuring tools, and particularly relates to a rapid measuring tool for brake blocks and grinding sub-parameters of motor train units. BACKGROUND

[0002] At present, the brake block of a motor train unit is one of the most critical execution components of a braking system, and the performance of the friction pair formed by the brake block and a brake disc relates to the stability and reliability of the entire braking system, and is directly related to the safety and operating efficiency of the train, therefore, it is particularly important to ensure that the gap between the brake block and the brake disc is within the technical requirements, and to ensure the braking power. Meanwhile, the brake block is one of the accessories with the highest replacement frequency of the motor train unit, and adjusting the friction force between the brake block and the brake disc is one of the conditions for ensuring normal wear of the brake block and no abnormal wear of the brake disc, and is also one of the measures for preventing abnormal wear of the brake block and increasing operating costs.

[0003] The grinding sub of the motor train unit is one of the important components for ensuring the adhesion performance of the wheel rail, preventing wheel tread scuffing, abnormal wear and polygon problems, and adjusting the gap between the friction surface of the grinding sub and the brake disc and ensuring the grinding sub acting pressure are particularly important for increasing adhesion, wheel shaping and improving the relationship between the wheel rail, and can greatly reduce material loss and maintenance costs.

[0004] At present, the gap measurement between the brake block and the brake disc, the gap measurement between the friction surface of the grinding sub and the wheel tread and the thickness measurement of the brake block of the motor train unit usually use a traditional steel ruler for measurement. In the actual maintenance process, using the traditional steel ruler for measurement, there is a situation that the gap does not meet the technical requirements due to human reading error, thereby causing abnormal wear of the brake block and the grinding sub and increasing maintenance costs. Meanwhile, due to the limited measurement space, especially the extremely small measurement space of the gap between the friction surface of the grinding sub and the wheel tread, and the difficulty in reading, the operation time is long, and the labor cost is further increased.

[0005] Therefore, a new technology is needed to solve the problem that the related parameters of the brake block and the grinding sub of the motor train unit are not convenient to measure in the prior art. CONTENT OF THE UTILITY MODEL

[0006] In order to solve the above problems in the prior art, the utility model provides a rapid measuring tool for brake block and grinding sub parameters of motor train units, which is convenient for measuring the gap between the brake block and the brake disc, the gap between the friction surface of the grinding sub and the wheel tread and the thickness of the brake block, improves the measurement and maintenance operation efficiency, and saves the maintenance cost and labor cost.

[0007] The utility model adopts the following technical solutions:

[0008] A kind of for motor train brake pad and abrasive sub parameter quick measurement tool, including measuring body and locating block, the measuring body one end is provided with reference plate, the locating block is movably installed on the measuring body and with the locating block each other parallel, the measuring body is provided with scale for observing the interval between the reference plate and the locating block;The other end of the measuring body one side is provided with gap measurement reference surface, and the opposite side is provided with gap measurement surface, the gap measurement surface is provided with first measurement area, second measurement area, third measurement area, fourth measurement area, the interval between the first measurement area, the second measurement area and the gap measurement reference surface is respectively adapted to the upper limit value, lower limit value of brake pad gap, the interval between the third measurement area, the fourth measurement area and the gap measurement reference surface is respectively adapted to the upper limit value, lower limit value of abrasive.

[0009] As a further improvement of the technical scheme of the utility model, the measuring body is further provided with a thickness measurement reference surface adjacent to the gap measurement reference surface and opposite to the gap measurement surface.

[0010] As a further improvement of the technical scheme of the utility model, the scale is located on the side opposite to the gap measurement reference surface.

[0011] As a further improvement of the technical scheme of the utility model, the opposite ends of the measuring body are a first end and a second end, the first measurement area, the second measurement area, the third measurement area and the fourth measurement area are sequentially arranged in a direction gradually approaching the second end, and the first measurement area is perpendicular to and connected to the end face of the first end.

[0012] The reference plate is provided on the second end.

[0013] As a further improvement of the technical scheme of the utility model, an auxiliary positioning area is provided on the side of the measuring body opposite to the gap measurement reference surface, and the scale is located on the auxiliary positioning area.

[0014] As a further improvement of the technical scheme of the utility model, a connecting piece is further included, one end of the connecting piece is slidably connected to the reference plate through the locating block in a detachable manner.

[0015] As a further improvement of the technical scheme of the utility model, a mounting boss is provided on the side of the reference plate close to the locating block, and the connecting piece is detachably connected to the mounting boss.

[0016] As a further improvement of the technical scheme of the utility model, an elastic member is further included, two ends of the elastic member are connected to the locating block and the mounting boss respectively and located between the locating block and the mounting boss.

[0017] As a further improvement of the technical scheme of the utility model, the elastic member is provided with a central hole for the connecting member to pass through.

[0018] As a further improvement of the technical scheme of the utility model, the elastic member is a spring.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] The tool for quickly measuring parameters of EMU brake pads and grinding subassemblies can ensure that the measurement speed is improved when measuring the gap between the brake pad grinding block and the brake disc, the gap between the grinding subassembly friction body friction surface and the wheel pair tread surface and the thickness of the brake pad, and the technical conditions caused by human factors do not meet the standards, thereby causing abnormal wear of accessories, increasing the risk of operation safety and increasing the labor cost, improving the work efficiency, saving the maintenance cost and labor cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model will be further described in detail in combination with the drawings and specific embodiments:

[0022] Figure 1 is the overall structure of the utility model isometric view;

[0023] Figure 2 is the overall structure of the utility model main view;

[0024] Figure 3 is the overall structure of the utility model side view.

[0025] Reference signs:

[0026] 1-measurement main body;11-reference plate;111-thickness measurement reference surface;112-mounting boss;1121-through hole;12-assisted positioning area;121-scale;13-first measurement area;14-second measurement area;15-third measurement area;16-fourth measurement area;17-gap measurement reference surface;18-first end;19-second end;

[0027] 2-positioning block;

[0028] 3-connecting member;

[0029] 4-elastic member. Specific embodiments

[0030] The concept, specific structure and generated technical effects of the present application will be described clearly and completely in combination with the embodiments and the drawings, so as to fully understand the purpose, scheme and effect of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The same reference signs used in the drawings indicate the same or similar parts.

[0031] It should be noted that, unless otherwise specified, when a certain feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the up, down, left, right and the like used in the present application are only relative to the mutual position relationship of the components of the present application in the drawings.

[0032] Referring to Figures 1 to 3 A tool for quickly measuring parameters of a brake pad and an abrasive of a motor train set, comprising a measuring body 1 and a positioning block 2, the measuring body 1 is provided with a multifunctional measuring area at one end, the measuring body 1 is provided with a reference plate 11 at this end, the positioning block 2 is movably installed on the measuring body 1 and is parallel to the positioning block 2, the movable installation mode is sliding connection, so that the distance between the positioning block 2 and the measuring body 1 can be changed. The measuring body 1 is provided with a scale 121 for observing the distance between the reference plate 11 and the positioning block 2. The distance between the two side surfaces of the reference plate 11 and the positioning block 2 away from each other can be adjusted to adapt to the abrasive gap when the brake pad is worn to the limit, so as to determine whether the brake pad is worn to the limit. When measuring the thickness of the brake pad, the operator needs to adjust the distance between the positioning block 2 and the reference plate 11 to the required size according to the scale 121, then tightly abuts the side surface of the reference plate 11 away from the positioning block 2 to the wheel brake disc, pushes or slides the measuring body 1 to make the positioning block 2 and the reference plate 11 extend into the abrasive particles of the brake pad, if it can extend into the abrasive particles, the brake pad is worn to the limit and needs to be replaced, if it cannot extend into the abrasive particles, the thickness is normal, so as to quickly determine whether the brake pad is worn to the limit.

[0033] The other end of the measuring body 1 is provided with a gap measurement reference surface 17 on one side, and a gap measurement surface on the opposite side, wherein the gap measurement surface is provided with a first measurement area 13, a second measurement area 14, a third measurement area 15 and a fourth measurement area 16, and the distances between the first measurement area 13, the second measurement area 14 and the gap measurement reference surface 17 are respectively adapted to the upper limit value and the lower limit value of the brake pad gap. The distances between the third measurement area 15, the fourth measurement area 16 and the gap measurement reference surface 17 are respectively adapted to the upper limit value and the lower limit value of the grinding sub friction body friction surface and the wheel tread gap. The first measurement area 13, the second measurement area 14, the third measurement area 15 and the fourth measurement area 16 are sequentially arranged in the direction from the first end 18 to the second end 19, and the distances between the first measurement area 13, the second measurement area 14, the third measurement area 15, the fourth measurement area 16 and the gap measurement reference surface 17 increase sequentially. The distance between the first measurement area 13 and the gap measurement reference surface 17 is adapted to the lower limit value of the brake pad grinding block and the brake disc gap, and the distance between the second measurement area 14 and the gap measurement reference surface 17 is adapted to the upper limit value of the brake pad grinding block and the brake disc gap. The distance between the third measurement area 15 and the gap measurement reference surface 17 is adapted to the lower limit value of the grinding sub friction body friction surface and the wheel tread gap, and the distance between the fourth measurement area 16 and the gap measurement reference surface 17 is adapted to the upper limit value of the grinding sub friction body friction surface and the wheel tread gap.

[0034] The tool for quickly measuring parameters of the EMU brake pad and grinding sub according to the present scheme can ensure that the measurement speed of the brake pad grinding block and the brake disc gap, the grinding sub friction body friction surface and the wheel tread gap and the brake pad thickness is improved, and the abnormal wear of the accessories, the increase of the operation safety risk and the increase of the labor cost caused by the failure of the technical conditions to meet the standards due to human factors are reduced, thereby improving the work efficiency and saving the maintenance cost and labor cost.

[0035] The surfaces of the first measurement area 13 and the second measurement area 14 can be planes parallel to the gap measurement reference surface 17, the first measurement area 13 can be used as a brake pad gap lower limit value measurement area, and the second measurement area 14 can be used as a brake pad gap upper limit value measurement area. When the EMU performs brake pad gap measurement operation, the operation personnel tightly abuts the gap measurement reference surface 17 against the wheel brake disc, first stretches the structure at the first measurement area 13 of the measuring body 1 into the brake pad grinding block and brake disc gap, if it cannot enter, the gap is too small and does not meet the technical requirements, and the gap needs to be adjusted to a larger value until the first measurement area 13 can enter the brake pad grinding block and brake disc gap, then the tool is continuously stretched into the brake pad grinding block and brake disc gap, and if the second measurement area 14 cannot enter the gap at this time, the gap meets the technical requirements.

[0036] When the motor train unit carries out the brake pad replacement operation, the operation personnel tightly abuts the gap measurement reference surface 17 against the wheel brake disc, the first measurement zone 13 and the second measurement zone 14 serve as the brake pad gap measurement zone, and the corresponding position of the brake pad gap measurement zone is inserted into the gap between the brake pad grinding block and the brake disc, so that it is quickly and accurately judged whether the brake pad gap adjustment meets the requirements.

[0037] The surfaces of the third measurement zone 15 and the fourth measurement zone 16 can be provided as convex arc surfaces, the third measurement zone 15 can serve as a grinding sub-gap lower limit value measurement zone, and the fourth measurement zone 16 can serve as a grinding sub-gap upper limit value measurement zone. When the motor train unit carries out the grinding sub-gap measurement operation, the operation personnel tightly abuts the gap measurement reference surface 17 against the wheel tread, first inserts the structure at the third measurement zone 15 of the measurement main body 1 into the gap between the grinding sub-friction body friction surface and the wheel tread, if it cannot be inserted, the gap is too small and does not meet the technical requirements, and the gap needs to be adjusted to a larger value until the third measurement zone 15 can be inserted into the gap between the grinding sub-friction body friction surface and the wheel tread, and then the tool is continuously inserted into the gap between the grinding sub-friction body friction surface and the wheel tread, at this time, if the fourth measurement zone 16 cannot be inserted into the gap, the gap meets the technical requirements.

[0038] When the motor train unit carries out the grinding sub-replacement operation, the operation personnel tightly abuts the gap measurement reference surface 17 against the wheel tread, the third measurement zone 15 and the fourth measurement zone 16 serve as the grinding sub-gap measurement zone, and the corresponding position of the grinding sub-gap measurement zone is inserted into the gap between the grinding sub-friction body friction surface and the brake disc, so that it is quickly and accurately judged whether the grinding sub-gap adjustment meets the requirements.

[0039] The first measurement zone 13 and the multifunctional measurement zone are located at two ends of the measurement main body 1, and the reference plate 11 and the positioning block 2 are flushly arranged away from one end of the first measurement zone 13. The side surface of the reference plate 11 away from the positioning block 2 can serve as a brake pad thickness measurement reference surface 111. When the motor train unit carries out the brake pad thickness measurement operation, the operation personnel need to first adjust the position of the positioning block 2 through the bolt and the spring, adjust the distance between the two side surfaces of the positioning block 2 and the reference plate 11 away from each other to the required size, and use the scale 121 as a reference in the adjustment process, and then tightly abut the side surface of the reference plate 11 away from the positioning block 2 against the wheel brake disc, and insert the multifunctional measurement zone into the brake pad grinding grain, if it can be inserted, the brake pad is worn out, and needs to be replaced, if it cannot be inserted, the thickness is normal, so that it is quickly judged whether the brake pad is worn out.

[0040] When the motor train unit carries out the brake pad thickness measurement operation, first adjust the positioning block 2 located in the multifunctional measurement zone to the corresponding limit value position, tightly abut the brake pad thickness measurement reference surface 111 against the wheel brake disc, and insert the multifunctional measurement zone into the brake pad grinding grain to quickly judge whether the brake pad is worn out.

[0041] Specifically, the measuring body 1 is further provided with a thickness measurement reference surface 111 adjacent to the gap measurement reference surface 17 and opposite to the gap measurement surface, and the side of the reference plate 11 away from the positioning block 2 is flush with the thickness measurement reference surface 111. Among them, the gap measurement reference surface 17 and the thickness measurement reference surface 111 are smooth surfaces, which are used as reference surfaces during measurement.

[0042] Specifically, the opposite ends of the measuring body 1 are a first end 18 and a second end 19, the first measurement area 13, the second measurement area 14, the third measurement area 15, and the fourth measurement area 16 are sequentially arranged in a direction gradually approaching the second end 19, the first measurement area 13 is perpendicular to and connected with the end surface of the first end 18, and the reference plate 11 is arranged at the second end 19.

[0043] Specifically, the scale 121 is located on the side of the measuring body 1 opposite to the gap measurement reference surface 17. Among them, an auxiliary positioning area 12 is arranged on the side of the measuring body 1 opposite to the gap measurement reference surface 17, and the scale 121 is located on the auxiliary positioning area 12. The auxiliary positioning area 12 can be held by the operator, and the operator mainly performs measurement operation by holding the auxiliary positioning area 12. The shape and size can be changed according to the actual use situation.

[0044] Specifically, the tool for quickly measuring parameters of EMU brake pads and grinding sub according to the present application further comprises a connecting piece 3, one end of the connecting piece 3 is slidably connected with the reference plate 11 through the positioning block 2 in a detachable manner.

[0045] Specifically, the side of the reference plate 11 close to the positioning block 2 is provided with a mounting boss 112, and the connecting piece 3 is detachably connected with the mounting boss 112.

[0046] Specifically, the tool for quickly measuring parameters of EMU brake pads and grinding sub according to the present application further comprises an elastic piece 4, both ends of the elastic piece 4 are connected with the positioning block 2 and the mounting boss 112 respectively and located between the positioning block 2 and the mounting boss 112.

[0047] Specifically, the elastic element 4 has a central hole through which the connecting element 3 can pass. The elastic element 4 is preferably a spring, and the connecting element 3 is preferably a bolt. The mounting boss 112 has a through hole 1121 adapted to the connecting element 3. The through hole 1121 is formed by opening a hole in the integral structure formed by connecting the mounting boss 112 and the reference plate 11. The through hole 1121 communicates with the thickness measurement reference surface 111, and the through hole 1121 has an internal thread adapted to the connecting element 3. The positioning block 2 can slide along the connecting element 3, and the distance between the positioning block 2 and the reference plate 11 can be adjusted by turning the bolt. The setting of the elastic element 4 ensures that the positioning block 2 remains stable during the measurement process. The elastic element 4 is always in a compressed state during the measurement. The starting position of the scale 121 can be set according to the actual situation, referring to... Figure 1 and Figure 2 The starting position of scale 121 can be set to be flush with the side of the reference plate 11 near the positioning block 2. During measurement, the part to be measured is placed between the positioning block 2 and the reference plate 11. The scale value can be read according to the position on the scale 121 corresponding to the positioning block 2. At this time, the scale value corresponding to the side of the positioning block 2 near the reference plate 11 is the distance value between the positioning block 2 and the reference plate 11, which is the thickness of the part to be measured. The spring-type adjustable positioning block 2 in the multi-functional measurement area can be used to measure the thickness of the brake pad, etc. It adopts a bolt spring adjustable design, and the measurement function can be added according to the actual site conditions. The positioning block 2 is provided with a through hole for the connecting piece 3 to pass through. The diameter of the elastic element 4 is larger than the diameter of the through hole, that is, the through hole allows the stud structure on the bolt to pass through. The nut structure on the bolt is located on the side of the positioning block 2 away from the mounting boss 112. In addition, refer to Figure 1 and Figure 2 The thickness of the reference plate 11 can be set to a standard value or a fixed value and marked in the blank area of ​​the auxiliary positioning area 12. When measuring a certain gap value, the positioning block 2 and the reference plate 11 can be placed in the gap and respectively close to the two sides forming the gap. The scale value corresponding to the side of the positioning block 2 away from the reference plate 11 plus the thickness value of the reference plate 11 is the gap value.

[0048] Specifically, a stepped structure can be provided at one end of the through hole 1121 near the positioning block 2, forming a stepped surface within the through hole 1121. One end of the elastic element 4 can abut against the stepped surface, preventing the elastic element 4 from tilting and making the state of the elastic element 4 more stable. An internal thread is provided at one end of the through hole 1121 away from the positioning block 2, and the length of the internal thread along the axial direction of the through hole 1121 can be set according to the actual situation.

[0049] Other aspects of the tool for rapid measurement of parameters of brake pads and grinding elements of high-speed trains described in this utility model are found in the prior art and will not be repeated here.

[0050] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Any modification, equivalent change and modification of the above embodiments, which does not deviate from the technical solution of the present application and is based on the technical essence of the present application, still belongs to the scope of the technical solution of the present application.

Claims

1. A tool for rapid measurement of parameters of a brake pad and a grinding element of a train set, characterized in that: The utility model provides a gap measuring device, including measuring body and positioning block, the one end of measuring body protrudes with reference board, positioning block active installation is in measuring body with and with reference board each other parallel, be equipped with scale for observing the interval between reference board and positioning block on measuring body, one side of the other end of measuring body is equipped with gap measuring reference surface, and the opposite side is equipped with gap measuring surface, be equipped with first measurement area, second measurement area, third measurement area, fourth measurement area on gap measuring surface, the interval between first measurement area, second measurement area and gap measuring reference surface is respectively with the upper limit value, lower limit value of gate piece gap, the interval between third measurement area, fourth measurement area and gap measuring reference surface is respectively with the upper limit value, lower limit value of grinding sub.

2. The tool for rapid measurement of EMU brake pad and grinder parameters according to claim 1, characterized in that: The measuring body is further provided with a thickness measuring reference surface adjacent to the gap measuring reference surface and opposite to the gap measuring surface, and the side of the reference plate away from the positioning block is flush with the thickness measuring reference surface.

3. The tool for rapid measurement of EMU brake pad and grinder parameters according to claim 2, characterized in that: The opposite ends of the measuring body are a first end and a second end, the first measurement area, the second measurement area, the third measurement area, and the fourth measurement area are sequentially arranged in a direction gradually approaching the second end, the first measurement area is perpendicular to the end face of the first end and connected to each other. The reference plate is arranged at the second end.

4. The tool for rapid measurement of EMU brake pad and grinder parameters according to claim 1, characterized in that: The scale is located on the side of the measuring body opposite to the gap measuring reference surface.

5. The tool for rapid measurement of EMU brake pad and grinder parameters according to claim 4, characterized in that: An auxiliary positioning area is provided on the side of the measuring body opposite to the gap measuring reference surface, and the scale is located on the auxiliary positioning area.

6. The tool for rapid measurement of EMU brake pad and grinder parameters according to claim 3, characterized in that: The connecting piece is slidably connected to the reference plate through the positioning block.

7. The tool for rapid measurement of EMU brake pad and grinder parameters according to claim 6, characterized in that: The reference plate is provided with a mounting boss near the positioning block, and the connecting piece is detachably connected to the mounting boss.

8. The tool for rapid measurement of EMU brake pad and grinder parameters according to claim 7, characterized in that: The utility model further comprises a resilient member, two ends of the resilient member are connected to the positioning block and the mounting boss respectively and located between the positioning block and the mounting boss.

9. The tool for rapid measurement of EMU brake pad and grinder parameters according to claim 8, characterized in that: The resilient member is provided with a central hole through which the connecting piece passes.

10. The tool for rapid measurement of EMU brake pad and grinder parameters according to claim 9, characterized in that: The resilient member is a spring.

Images