CN110901779B

CN110901779B - Crawler-type waterproof inspection trolley suitable for heat supply underground operation environment

Info

Publication number: CN110901779B
Application number: CN201811085527.3A
Authority: CN
Inventors: 刘荣; 张延恒; 张立申; 张启航; 刘运航; 李仲博; 罗铮; 刘晨; 贾萌; 孟震; 郭姝娟
Original assignee: BEIJING DISTRICT HEATING GROUP; Beijing University of Posts and Telecommunications
Current assignee: BEIJING DISTRICT HEATING GROUP; Beijing University of Posts and Telecommunications
Priority date: 2018-09-18
Filing date: 2018-09-18
Publication date: 2021-02-19
Anticipated expiration: 2038-09-18
Also published as: CN110901779A

Abstract

The invention discloses a crawler-type waterproof inspection trolley suitable for a heat supply underground working environment, which integrally comprises a main trolley body, a trolley body side wall, a camera, a control system board and a driving motor, wherein the camera, the control system board and the driving motor are arranged in the main trolley body, a crawler traveling mechanism is arranged on the outer side of the trolley body side wall, a crawler is tightly matched with a pulley body, a surface extrusion sealing structure consisting of an annular sealing frame, a spring box and a pulley protection plate is arranged in the pulley body, a double surface extrusion sealing structure consisting of hollow shafts, a double waterproof bearing sealing structure consisting of two waterproof bearings, a bidirectional extrusion type packing sealing structure consisting of a packing box and a tensioning spring box, and a double O-shaped ring sealing structure consisting of two O-shaped rings. The inspection trolley has waterproof capability and can execute operation tasks in immersion and water shower occasions.

Description

Crawler-type waterproof inspection trolley suitable for heat supply underground operation environment

Technical Field

The invention relates to a crawler-type waterproof inspection trolley suitable for a heat supply underground operation environment.

Background

The invention relates to a crawler-type waterproof inspection trolley which is suitable for a heat supply underground working environment, is mainly used for executing wading detection tasks and has a waterproof function. The waterproof difficulty of the wading work inspection trolley is mainly concentrated on external waterproof of a wheel shaft system, the current commonly used waterproof treatment modes mainly still adopt a traditional mechanical sealing mode represented by sealing ring type sealing or sealing modes of other more complex structures, such as multilayer circulating graphite silica gel sleeve sealing, multiple waterproof bearing sealing, vaseline filling sealing and the like, most of the seals complete sealing tasks by forming multilayer fences, and the seals do not completely meet the waterproof task requirements during wading work, are easy to leak, have complex structures and influence the work efficiency.

Disclosure of Invention

The main car body module is a traditional working car main body and comprises a main car body, an outer protection plate, a car body side wall, a camera, a driving motor and a control system plate.

The waterproof wheel shaft module is an integrated module of a wheel shaft with waterproof performance and a waterproof sealing structure, and a waterproof sealing task is completed through five sealing steps of profile extrusion structure sealing, stepped shaft shoulder sealing, double waterproof bearing sealing, bidirectional extrusion type packing sealing, double O-shaped rings and the like.

The track walking module is combined with the waterproof wheel shaft module to complete the walking function of the inspection trolley and mainly comprises a track, a support-tensioning wheel train and a pulley body.

Drawings

Fig. 1 is a structural view of a waterproof axle module, showing a concrete structure of the waterproof axle module, and a connection fitting manner thereof with a vehicle body side wall.

Fig. 2 is a side view of the inspection trolley showing the side view of the inspection trolley macroscopically after the outer protective plate is removed.

Fig. 3 is an appearance diagram of the inspection trolley body, and shows the overall appearance structure of the inspection trolley.

Fig. 4 is a top view of the inspection trolley.

Wherein, 1, a main vehicle body; 2. a crawler belt; 3. a support-tension wheel train; 4. a pulley body; 5. a camera; 6. an outer layer protection plate; 7. a wear-resistant sleeve; 8. a stuffing box; 9. a waterproof bearing; 10. an annular seal seat; 11. an annular seal carrier; 12. a spring box; 13. a hollow shaft; 14. a second O-ring seal; 15. an output shaft of the motor; 16. a coupling; 17. a vehicle body side wall; 18. a first O-ring seal; 19. a wheeled power input shaft; 20. countersunk head screws; 21. a right belt wheel guard plate; 22. tensioning the spring box; 23 control the system board; 24. a drive motor; 25. left band pulley guard plate.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

the invention relates to an inspection trolley which consists of a trolley body module, a waterproof wheel shaft module and a crawler belt walking module.

Referring to fig. 2, 3 and 4, the main vehicle body module is composed of a main vehicle body 1, an outer protective plate 6, a vehicle body side wall 17, a camera 5, a driving motor 24 and a control system plate 23. The outer layer protection plates 6 are located on the outermost sides of the left and right sides of the main vehicle body 1 and are tightly connected with the vehicle body side walls 17, and the vehicle body side walls 17 are connected with the main vehicle body 1. The front end and the rear end of the main vehicle body 1 are provided with detection cameras 5; the main body 1 is a hollow structure, and 2 driving motors 24 and a set of control system board 23 are placed in the main body. The shell of the driving motor 24 is fixedly connected with the main vehicle body 1, and the motor output shaft 15 of the driving motor extends out of the side wall 17 of the vehicle body.

Referring to fig. 2, the crawler traveling module is located between the outer protection plate 6 and the side wall 17 of the vehicle body, and is composed of a crawler 2, a pulley body 4 and a supporting-tensioning wheel train 3, and the crawler 2, the pulley body 4 and the supporting-tensioning wheel train 3 are in tensioning fit to form a traveling mechanism of the inspection trolley; the support-tension wheel train 3 is fixedly connected with the vehicle body side wall 17. The pulley body 4 is in turn connected in rotation with the hollow shaft 13.

Referring to fig. 1, which is a structural diagram of a waterproof wheel axle module, when the inspection trolley moves, the pulley body 4 rotates around the hollow shaft 13, and all waterproof structures are arranged among gaps formed by the pulley body 4, the left and right

pulley protection plates

21 and 25 and the hollow shaft 13.

Referring to the attached drawing 1, the waterproof wheel axle module mainly comprises a wear-resistant sleeve 7, a stuffing box 8, a waterproof bearing 9, an annular sealing seat 10, an annular sealing frame 11, a spring box 12, a hollow shaft 13, a second O-shaped sealing ring 14, a coupler 16, a first O-shaped sealing ring 18, a belt wheel power input shaft 19, a sunk screw 20, a right belt wheel protection plate 21, a tensioning spring box 22 and a left belt wheel protection plate 25.

The hollow shafts 13 are supporting bodies of the whole vehicle body, the number of the hollow shafts 13 is four, and the hollow shafts 13 are fixedly connected with the side wall 17 of the vehicle body, and are symmetrically arranged on the left side and the right side of the inspection trolley in pairs. The hollow shaft 13 is internally provided with a hollow hole, a motor output shaft 15 of a driving motor 24 is arranged in the hollow hole, and the motor output shaft 15 is connected with a belt wheel power input shaft 19 through a coupling 16. The motor output shaft 15 and the belt wheel power input shaft 19 are respectively provided with a second O-shaped sealing ring 14 and a first O-shaped sealing ring 18.

The outer part of the hollow shaft 13 is sequentially provided with a left belt wheel protection plate 25, an annular sealing frame 11, a spring box 12, a sealing seat 10, a waterproof bearing 9, a stuffing box 8, a wear-resistant sleeve 7, a tensioning spring box 22 and a right belt wheel protection plate 21 from left to right. The pulley body 4 is arranged outside the wear-resistant sleeve 7 and fixedly connected with the left pulley protection plate 25 and the right pulley protection plate 21 through screws. The right belt wheel protection plate 21 is fixedly connected with the belt wheel power input shaft 19 through a countersunk head screw 20.

The motion transmission relationship of the whole inspection trolley is that the motion of the motor output shaft 15 is transmitted to the belt wheel power input shaft 19 through the coupler 16, and the belt wheel power input shaft 19 drives the belt wheel body 4 to rotate around the hollow shaft 13 through the right belt wheel protection plate 21. Because track 2 installs in pulley body 4 outsidely, then pulley body 4 drives track 2 motion to the holistic motion of dolly is patrolled and examined in the realization.

Furthermore, the waterproof axle module has five seals in common, which is explained here in terms of the direction of penetration of the water flow. According to the attached drawing 1, the way that outside rivers permeate the wheel shaft inside is along the gap entering between car body lateral wall 17 and the left band pulley guard plate 25 that is close to car body lateral wall 17 one side, and then along the gap entering left band pulley guard plate 26 inboardly between left band pulley guard plate 25 and the dead axle 13 to break through dual profile extrusion structure in proper order and seal, two waterproof bearing are sealed, and two-way extrusion formula is packed and is sealed, and the shoulder of stepped shaft is sealed, and two O shape circles are sealed.

The composition of these five seal structures will be described in turn.

The double-shaped surface extrusion structure seal is composed of an annular seal frame 11, a spring box 12 and a left belt wheel protection plate 25, and is shown in figure 1. The left belt wheel protection plate 25 is provided with an annular sealing groove in a position corresponding to the installation position of the annular sealing frame 11, the annular sealing frame 11 is tightly attached to the annular sealing groove in the left belt wheel protection plate 25, the spring box 12 is located right behind the annular sealing frame 11, and the annular sealing frame 11 is pushed by elastic force of the spring box to tightly press the left belt wheel protection plate 25 so that the left belt wheel protection plate is always in a tightly attached state.

The double watertight bearing seal, with reference to fig. 1, uses a watertight bearing 9 to simultaneously support rotation and prevent water. Wherein left side waterproof bearing 9 settles in the surface of hollow shaft 13, and its left side installation annular seal seat 10 carries out left side axial positioning to waterproof bearing 9, and its right side and stuffing box 8 are hugged closely, rely on stuffing box 8 to carry out right side axial positioning. The left side of the right waterproof bearing 9 is contacted with another stuffing box 8 to complete left axial positioning, and the right side of the right waterproof bearing 9 is abutted against the shaft shoulder of the hollow shaft 13 to complete right axial positioning. A wear-resistant sleeve 7 is arranged between the pulley body 4 and the waterproof bearing 9.

Two-way extrusion formula packing is sealed, refer to figure 1, mainly constitute by two stuffing boxes 8 and the tensioning spring case 22 of arranging about, tensioning spring case 22 is located between two stuffing boxes 8 to produce the stuffing box 8 of two-way spring tension extrusion left and right sides, make its inside filler receive the compression, be full of whole space to both sides radial expansion rapidly, fill the gap, the spring can last constantly provide the supply power, form the compensation, offset wearing and tearing, form two-way extrusion formula packing and seal.

The stepped shaft shoulder seal, referring to figure 1, the right side of the hollow shaft 13 has stepped shaft characteristics, and an inner wall gap is formed between the stepped shaft characteristics and the right belt wheel protection plate 21, so that water flow is prevented from directly permeating from the right side of the waterproof bearing 9 to the area where the belt wheel power input shaft 19 is located, an effective space is provided for sealing a profile extrusion structure, and the stepped shaft shoulder seal belongs to a primary waterproof measure in water prevention.

Double O-ring seals, referring to fig. 1, inside the hollow shaft 13, there are arranged a motor output shaft 15 and a pulley power input shaft 19, a second O-ring 14 and a first O-ring 18, and a coupling 16. The second O-ring 14 and the first O-ring 18 are disposed on the motor output shaft 15 and the pulley power input shaft 19, respectively, and form a double O-ring seal.

Claims

1. A crawler-type waterproof inspection trolley suitable for a heat supply underground operation environment is characterized in that two sides of a main trolley body (1) are respectively provided with a crawler (2) sleeved on a pulley body (4), the inner side of the crawler (2) is provided with a supporting-tensioning wheel train (3), two sides of the pulley body (4) are tightly connected with a right pulley protection plate (21) and a left pulley protection plate (25), an idle shaft (13) is arranged inside the pulley body (4), a sealing waterproof design is carried out between the pulley body (4) and the idle shaft (13), and trolley body side walls (17) are arranged on the left side and the right side of the main trolley body (1);

the inside of the pulley body (4) is provided with a double-profile extrusion sealing structure which consists of an annular sealing frame (11), a spring box (12) and a left pulley protection plate (25), wherein the left pulley protection plate (25) is provided with an annular sealing groove characteristic at the position corresponding to the installation of the annular sealing frame (11), the spring box (12) is positioned right behind the annular sealing frame (11), and the annular sealing frame (11) is pushed to be tightly attached to the annular sealing groove on the left pulley protection plate (25) through the elastic force of the spring box; the inside of the pulley body (4) is provided with a double-waterproof bearing sealing structure which is composed of two waterproof bearings (9) arranged on the outer surface of a hollow shaft (13); the inside of the pulley body (4) is provided with a bidirectional extrusion type packing sealing structure, the structure is positioned between two waterproof bearings (9) and consists of two packing boxes (8) and a tensioning spring box (22), the two packing boxes (8) are arranged on the outer surface of the hollow shaft (13), and the tensioning spring box (22) is positioned between the two packing boxes (8) and extrudes the packing boxes (8) at two sides; the outside of the hollow shaft (13) is of a stepped shaft structure, and the stepped shaft structure and the right belt wheel protection plate (21) form a stepped shaft shoulder sealing structure.

2. The waterproof inspection trolley of crawler type suitable for heating underground working environment according to claim 1, wherein a motor output shaft (15), a coupler (16) and a belt wheel power input shaft (19) are installed inside the hollow shaft (13).

3. The crawler-type waterproof inspection trolley suitable for the heat supply underground working environment is characterized in that a double-O-ring sealing structure is arranged inside the hollow shaft (13), and the structure is composed of a second O-ring (14) and a first O-ring (18) which are arranged on a motor output shaft (15) and a belt wheel power input shaft (19).

4. The crawler-type waterproof inspection trolley suitable for the heat supply underground working environment is characterized in that a wear-resistant sleeve (7) is arranged inside the pulley body (4).