Steel rail profile measuring instrument with composite sealing structure

Abstract

The utility model discloses a steel rail profile measuring instrument with a composite sealing structure, which is characterized in that seven sealing structures are designed on an existing steel rail profile measuring instrument, an O-shaped sealing ring is arranged between a bottom cover and a main shell, and a key board made of soft materials is fixedly attached to the main shell. An O-shaped sealing ring is installed between the charging communication interface and the main shell, an O-shaped sealing structure is installed between the big arm shell and the main shell, and an O-shaped sealing structure and an oil seal sealing structure between the big arm rotating shaft and the output end of the small arm rotating shaft are installed between the small arm shell and the big arm. By means of the design of the multiple sealing structures, the steel rail profile measuring instrument effectively prevents pollutants such as dust and water from entering the main shell, and it is guaranteed that internal precision elements are not damaged; the device is suitable for being used in a complex environment, and the maintenance frequency and cost of the steel rail profile measuring instrument are effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of rail measuring equipment, and specifically relates to a rail profile measuring instrument with a composite sealing structure. BACKGROUND

[0002] At present, the rail profile measuring equipment on the market generally has the problem of missing environmental sealing protection design. Limited by the traditional structure design, the effective waterproof and moisture-proof barriers are not configured at the key parts such as the shell joint, sensor opening and large arm and small arm rotation. In the frequent rainfall area or the plum rain season in the south (relative humidity ≥80% RH working condition), the environmental humidity can easily enter the inside through the equipment gap, causing the internal circuit and sensor to be damp and invalid. For example, the sensor precision decreases, the electrical elements are short-circuited, and even the equipment is shut down, which affects the detection efficiency of the on-site operating personnel. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems, the utility model provides a rail profile measuring instrument with a composite sealing structure, which is designed with multiple sealing structures on the existing rail profile measuring instrument, and can realize full environmental adaptability measurement in the plum rain season and high-humidity adverse working conditions, greatly improving the work efficiency of the on-site personnel.

[0004] The utility model has a rail profile measuring instrument with a composite sealing protection structure, which comprises a bottom cover sealing structure, a key plate sealing structure, a charging communication interface sealing structure, a large arm sealing structure, a small arm sealing structure, a large arm shaft sealing structure and a small arm shaft sealing structure installed on the existing rail profile measuring instrument.

[0005] The bottom cover sealing structure is an O-shaped sealing ring arranged between the bottom cover and the circumferential surface of the bottom of the main shell of the rail profile measuring instrument.

[0006] The key plate sealing structure is a soft material key plate which is attached to and fixed with the wall surface of the main shell of the rail profile measuring instrument. The charging communication interface sealing structure is an interface O-shaped sealing ring arranged between the flange designed on the circumferential surface of the outer end of the charging communication interface and the wall surface of the main shell of the rail profile measuring instrument.

[0007] The large arm sealing structure is an O-shaped sealing ring arranged between the large arm cylindrical shell and the main shell of the rail profile measuring instrument.

[0008] The small arm sealing structure is an O-shaped sealing ring arranged between the small arm cylindrical shell and the front end of the large arm of the rail profile measuring instrument.

[0009] The large arm shaft sealing structure is a large arm oil seal arranged between the through hole at the end of the large arm cylindrical shell of the rail profile measuring instrument and the large arm shaft which passes through the through hole coaxially.

[0010] The sealing structure of the small arm rotating shaft is an oil seal arranged between a through hole on the front end of the large arm of the rail profile measuring instrument and a small arm rotating shaft coaxially penetrating the through hole.

[0011] The rail profile measuring instrument with the composite sealing protection structure has multiple sealing structures added on the rail profile measuring instrument, which effectively blocks the pollutants such as dust and moisture from entering the main shell, ensures that the internal precision components are not damaged, can resist the corrosive environment such as humidity and salt fog, is suitable for use in complex environments, effectively reduces the maintenance frequency and cost of the rail profile measuring instrument, and makes the equipment operation more reliable and has a longer service life. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a sealing protection structure position diagram in the rail profile measuring instrument of the utility model;

[0013] Figure 2 It is a sealing structure diagram between the main shell and the bottom cover in the rail profile measuring instrument of the utility model;

[0014] Figure 3 It is a sealing structure diagram between the key plate and the main shell in the rail profile measuring instrument of the utility model;

[0015] Figure 4 It is a sealing structure diagram between the charging communication interface and the main shell in the rail profile measuring instrument of the utility model;

[0016] Figure 5 It is a sealing structure sectional view of the charging communication interface in the rail profile measuring instrument of the utility model;

[0017] Figure 6 It is a sealing structure diagram between the large arm shell and the main shell in the rail profile measuring instrument of the utility model;

[0018] Figure 7 It is a sealing structure diagram between the small arm shell and the large arm in the rail profile measuring instrument of the utility model;

[0019] Figure 8 It is a sealing structure diagram of the small arm rotating shaft in the rail profile measuring instrument of the utility model;

[0020] Figure 9 It is a sealing structure diagram of the large arm rotating shaft in the rail profile measuring instrument of the utility model.

[0021] In the drawings:

[0022] 1-bottom cover sealing structure 2-key plate sealing structure 3-charging communication interface sealing structure

[0023] 4-large arm sealing structure 5-small arm sealing structure 6-large arm rotating shaft sealing structure

[0024] 7-small arm pivot sealing structure 8-main housing 9-bottom cover

[0025] 10-keyboard 11-control circuit mounting plate 12-charging communication interface

[0026] 13-large arm cylindrical housing 14-large arm housing connecting section 15-small arm cylindrical housing

[0027] 16-large arm front end threaded connecting section 17-large arm 18-small arm pivot

[0028] 19-large arm pivot 20-small arm 101-bottom cover O-ring seal

[0029] 102-bottom cover seal ring 201-recessed portion 202-annular insertion seam

[0030] 301-interface sealing groove 302-interface O-ring seal 401-large arm O-ring seal

[0031] 501-small arm O-ring seal 601-small arm oil seal 701-large arm oil seal DETAILED DESCRIPTION

[0032] The utility model will be further explained in detail in connection with the drawings.

[0033] The utility model discloses a rail profile measuring instrument with composite sealing structure designs multiple sealing structures on the existing rail profile measuring instrument, including bottom cover sealing structure 1, keyboard sealing structure 2, charging communication interface sealing structure 3, large arm sealing structure 4, small arm sealing structure 5, large arm pivot sealing structure 6 and small arm pivot sealing structure 7, and the position of each structure on the rail profile measuring instrument is as shown in the figure. Figure 1

[0034] The bottom cover sealing structure 1 includes bottom cover O-ring seal 101 and bottom cover sealing groove 102, as shown in the figure. Figure 2 Among them, the bottom cover sealing groove 102 is the rectangular recess designed on the bottom surface of the main housing 8, and the bottom cover O-ring seal 101 is pressed into the sealing groove A 102 through the groove opening of the bottom cover sealing groove 102 and has the part of the groove opening of the bottom cover sealing groove 102.

[0035] ​The keypad sealing structure 2 is achieved by improving the existing keypad 10. In this invention, the keypad 10 is made of soft rubber. Considering that existing keypads 10 are typically stacked and fixed within the main housing 8 from the outside to the inside with the control circuit mounting plate 11, they lack sealing performance. Therefore, the soft rubber keypad 10 can directly contact the wall of the housing 8 to achieve a sealing effect, such as... Figure 3 As shown, in this utility model, a recessed portion 201 is designed in the middle of the back side of the keypad 10 for placing the control board; at the same time, an annular slot 202 is designed on the circumferential wall of the recessed portion 201, so that the control circuit mounting plate 11 is inserted into the annular slot 202 in the circumferential direction. Then, the circumferentially arranged bolts pass through the annular slot 202 in sequence through the keypad 10 and the control circuit mounting plate 11 and are threadedly connected and tightened with the screw holes on the wall of the main housing 8, so that the keypad 201 can be directly pressed and fixed on the wall of the main housing 8, thereby achieving a seal between the keypad 10 and the main housing 8.

[0036] The charging communication interface sealing structure 3 includes an interface sealing groove 301 and an interface O-ring 302, such as Figure 4 , Figure 5 As shown. The interface sealing groove 301 is a rectangular groove, formed on the inner side of the flange designed circumferentially on the outer end of the charging communication interface 12. The interface O-ring 302 is pressed into the interface sealing groove 301 through the groove opening, and has a portion protruding above the groove opening. Thus, after the charging communication interface 12 is inserted into the socket on the main housing 8 and fixed, the interface O-ring 302 is pressed between its outer flange and the outer wall of the main housing 8.

[0037] The boom sealing structure 4 is a boom O-ring 401 provided between the boom cylindrical shell 13 and the boom shell connecting section 14 on the main shell 8, such as... Figure 6 As shown. The internal threaded structure at the end of the boom cylindrical housing 13 is threadedly connected to the external threaded structure at the end of the boom connecting sleeve connecting section 14 on the main housing 8, and is limited by an annular shoulder on the boom housing connecting section 14. The boom O-ring seal 401 is fixedly sleeved on the boom housing connecting section 14, located at the angle between the boom housing connecting section 14 and its upper shoulder. Therefore, when the threads between the boom cylindrical housing 13 and the boom housing connecting section 14 are tightened, the boom O-ring seal 401 is compressed, achieving a seal between the boom cylindrical housing 13 and the main housing 8.

[0038] The forearm sealing structure 5 is a forearm O-ring 501 set between the forearm cylindrical housing 15 and the threaded connection section 16 at the front end of the upper arm, such as Figure 7As shown in the drawings, the inner thread structure at the end of the small arm cylindrical shell 15 is threadedly connected with the outer thread on the front end threaded connecting section 16 of the large arm 17, and is limited by the inner wall surface at the front end of the large arm 17. The small arm O-shaped sealing ring 501 is fixedly sleeved on the front end threaded connecting section 16 of the large arm, and is located at the position between the large arm connecting section and the inner wall surface at the front end of the large arm 17. Thus, when the small arm cylindrical shell 15 is threadedly fixed with the front end threaded connecting section 16 of the large arm, the small arm O-shaped sealing ring 501 is compressed to realize the sealing between the small arm cylindrical shell 15 and the main shell 8.

[0039] The large arm rotating shaft sealing structure 6 and the small arm rotating shaft sealing structure 7 have the same sealing mode. The small arm rotating shaft sealing structure 6 is an oil seal 601 arranged between the through hole at the front end of the large arm 17 and the output end of the small arm rotating shaft 18 coaxially penetrating the through hole, as shown in the drawings. Figure 8 The output end of the small arm rotating shaft 18 is connected with the small arm 20. The large arm rotating shaft sealing structure 7 is an oil seal 701 arranged between the through hole at the end of the large arm cylindrical shell 13 and the large arm rotating shaft 19 coaxially penetrating the through hole, as shown in the drawings. Figure 9 The output end of the large arm rotating shaft 19 is connected with the end of the large arm 17. The small arm oil seal 601 and the large arm oil seal 701 are both limited by the annular shoulder in the through hole. Thus, the end of the large arm rotating shaft 19 and the small arm rotating shaft 18 are sealed.

[0040] Thus, through the improved composite sealing structure design of the present utility model on the existing rail profile measuring instrument, seven sealing rings and oil seals are installed to realize the sealing of each shell and the sealing of the rotating part. The sealing protection level can reach IP54 or above, which can effectively prevent the damage and influence of moisture on the equipment.

Claims

1. A rail profile gauge having a composite seal structure, characterised in that: The application relates to a sealing structure for a rail profile measuring instrument, which comprises a bottom cover sealing structure, a key plate sealing structure, a charging communication interface sealing structure, a large arm sealing structure, a small arm sealing structure, a large arm rotating shaft sealing structure and a small arm rotating shaft sealing structure. The bottom cover sealing structure is an O-shaped sealing ring arranged between the bottom cover and the circumferential surface of the bottom of the main shell of the rail profile measuring instrument. The key plate sealing structure is a soft material key plate which is attached to and fixed on the wall surface of the main shell of the rail profile measuring instrument. The charging communication interface sealing structure is an interface O-shaped sealing ring arranged between the flange designed on the circumferential surface of the outer end of the charging communication interface and the wall surface of the main shell of the rail profile measuring instrument. The large arm sealing structure is an O-shaped sealing ring arranged between the large arm cylindrical shell and the main shell of the rail profile measuring instrument. The small arm sealing structure is an O-shaped sealing ring arranged between the small arm cylindrical shell and the front end of the large arm. The large arm rotating shaft sealing structure is a large arm oil seal arranged between the through hole at the end of the large arm cylindrical shell and the large arm rotating shaft which passes through the through hole coaxially. The small arm rotating shaft sealing structure is a small arm oil seal arranged between the through hole on the front end of the large arm and the small arm rotating shaft which passes through the through hole coaxially.

2. The rail profile gauge with a combined seal structure according to claim 1, characterized in that: The bottom cover O-shaped sealing ring is arranged in the bottom cover sealing groove designed on the circumferential surface of the top surface of the bottom cover, and is pressed tightly by the circumferential surface of the top surface of the bottom cover after the main shell and the bottom cover are fixed.

3. The rail profile gauge with a combined seal structure according to claim 1, characterized in that: The recessed part is designed in the middle of the back side of the key plate, and the control plate is arranged in the recessed part; meanwhile, the annular insertion slot is designed on the circumferential wall surface of the recessed part, so that the control circuit installation plate is inserted into the annular insertion slot; the bolts arranged circumferentially pass through the key plate and the control circuit installation plate through the annular insertion slot and are screwed and connected with the wall surface of the main shell of the rail profile measuring instrument.

4. The rail profile gauge with a combined seal structure according to claim 1, characterized in that: The large arm cylindrical shell is connected with the outer thread of the large arm shell connecting section on the main shell of the rail profile measuring instrument, and is limited by the annular shoulder on the large arm shell connecting section; the large arm O-shaped sealing ring is fixed on the large arm shell connecting section and is located at the position between the large arm shell connecting section and the shoulder.

5. The rail profile gauge with a combined seal structure according to claim 1, characterized in that: The small arm cylindrical shell is connected with the outer thread of the large arm front end threaded connecting section, and is limited by the inner wall surface of the large arm front end; the small arm O-shaped sealing ring is fixed on the large arm front end threaded connecting section and is located at the position between the large arm connecting section and the inner wall surface of the large arm front end.

6. The rail profile gauge with a combined seal structure according to claim 1, characterized in that: The small arm oil seal and the large arm oil seal are both limited by the annular shoulder in the through hole.

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