Rail automatic spraying maintenance trolley

Abstract

The utility model discloses a rail automatic spraying maintenance trolley which comprises a trolley body and a pair of rails, walking wheels are arranged on the trolley body, a water tank is arranged on the trolley body, the rail automatic spraying maintenance trolley further comprises a driving system, a front proximity switch and a rear proximity switch are arranged on the front side and the rear side of the trolley body respectively, and blocking structures are arranged above the rails front and back at intervals. Each blocking structure comprises a blocking cross beam and a detection piece arranged corresponding to the front proximity switch or the rear proximity switch, a fixed stand column extending upwards is arranged on the vehicle body, a swing motor is arranged at the top of the fixed stand column, an output shaft of the swing motor is connected with an input shaft of a spraying speed reducer, and an output shaft of the spraying speed reducer extends front and back; a spraying assembly is connected through the spraying clamp; spraying limiting microswitches are arranged on the left side and the right side of an output shaft of the spraying speed reducer, and contact elastic pieces corresponding to the two spraying limiting microswitches are arranged on the output shaft of the spraying speed reducer. The structure is simple and compact, spraying maintenance can be automatically conducted on the inner wall of the tunnel, and avoiding is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying and curing, in particular to a tracked automatic spraying and curing trolley. Background Art

[0002] During the tunnel construction process, the concrete poured on the inner wall needs to be sprayed for maintenance. When spraying maintenance is performed manually, multiple people are required to operate, which is labor-intensive, and manual control is prone to uneven spraying. Therefore, most of them currently use maintenance trolleys for maintenance. CN 204149309 U discloses a tunnel secondary lining maintenance and dust removal spray trolley, which includes a door-shaped load-bearing frame, a walking device and a spray assembly; the spray assembly includes an arched water spray pipe and a water collection tank; the lower end of the arched water spray pipe is connected to a pressurized water pump and a water storage tank in sequence; the water collection tank is connected to the water storage tank through a recovery pipe.

[0003] However, due to the large size of the trolley, high equipment cost, and limited scope of application, it can only be used in tunnels where the tunnel size is larger than the trolley size, and only the bottom of the trolley can make way. When other larger equipment needs to pass, it is difficult to avoid it. The trolley needs to stop and retreat to the avoidance position to avoid it, which affects the spraying efficiency. Utility Model Content

[0004] The utility model aims to solve the technical problems existing in the prior art, and particularly innovatively proposes a tracked automatic spraying maintenance trolley, which has a simple and compact structure and can automatically spray and maintain the inner wall of a tunnel, making it easy to avoid.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a tracked automatic spray maintenance trolley, comprising a vehicle body and a pair of tracks, the vehicle body is provided with running wheels for moving on the tracks, the vehicle body is provided with a water tank, and also comprises a driving system, the front and rear sides of the vehicle body are respectively provided with a front proximity switch and a rear proximity switch, the front proximity switch is used to switch the movement in the reverse direction, the rear proximity switch is used to stop the driving system, and blocking structures are arranged at intervals above the tracks; the blocking structures each comprise a blocking crossbeam and a detection sheet arranged corresponding to the front proximity switch or the rear proximity switch, the height of the blocking crossbeam is lower than the bottom of the vehicle body, and is used to abut against the running wheels;

[0006] A fixed column extending upward is provided on the vehicle body, and a swing motor is provided on the top of the fixed column. The output shaft of the swing motor is connected to the input shaft of the spray reducer. The output shaft of the spray reducer is extended frontward and rearward and is connected to a spray assembly through a spray clamp; the spray assembly is connected to a water supply system, and the water supply system is equipped with a pressure pump; spray limit micro switches are provided on the left and right sides of the output shaft of the spray reducer, and the corresponding two spray limit micro switches on the output shaft of the spray reducer are provided with contact springs, and the spray limit micro switch is used to switch the rotation direction of the swing motor.

[0007] In the above scheme: the two spray limit micro switches are respectively a limit release switch and a limit reversal switch, the normally closed contact of the limit release switch is connected to one end of the start switch, and the other end of the start switch is connected to the positive pole of the power supply, the common contact of the limit release switch is connected to the normally open contact of the limit reversal switch, the common contact of the limit reversal switch is connected to one end of the limit self-locking relay winding and one end of the spray reversal relay winding, the other end of the limit self-locking relay winding and the other end of the spray reversal relay winding are both connected to the negative pole of the power supply, one end of the normally open contact of the limit self-locking relay is connected to the common contact of the limit reversal switch, and the other end of the normally open contact of the limit self-locking relay is connected to the normally open contact of the limit reversal switch;

[0008] One end of the starting switch is connected to the normally closed contacts of the first group of switches of the spray reversal relay and the normally open contacts of the second group of switches of the spray reversal relay, the two ends of the swing motor winding are respectively connected to the common contacts of the first group of switches and the second group of switches of the spray reversal relay, and the negative pole of the power supply is connected to the normally open contacts of the first group of switches of the spray reversal relay and the normally closed contacts of the second group of switches of the spray reversal relay.

[0009] In the above scheme: the spray assembly includes an extended nozzle, the bottom end of the extended nozzle is detachably mounted on the output shaft of the spray reducer through a spray clamp, the bottom end of the extended nozzle is provided with a movable joint, and is connected to the water pipe of the water supply system through the movable joint, and the end of the extended nozzle is detachably provided with a spray head.

[0010] In the above scheme: the spray fixture includes a spray fixing block and a clamping piece, the spray fixing block is used to be fixed together with the spray reducer, the spray fixing piece and the clamping piece are used to clamp the extended spray pipe, a clamping threaded hole is provided on one side of the spray fixing block, and the clamping piece is equipped with a pair of clamping bolts and is fixed by the clamping bolts;

[0011] The spray fixing block is provided with a through hole for the output shaft of the spray reducer to pass through, and the spray fixing block is provided with a tightening threaded hole arranged perpendicular to the through hole, and is fixed by tightening the output shaft of the spray reducer with a tightening bolt. The clamping is stable and not easy to fall off, and at the same time, it can also meet the swing of the spray component.

[0012] In the above scheme: the driving system includes a travel motor and a reduction mechanism, the output end of the travel motor is connected to the input end of the reduction mechanism, and the output end of the reduction mechanism is connected to the travel wheel.

[0013] In the above scheme: the drive system also includes a walking drive circuit, the walking drive circuit includes one end of the normally closed contact of the rear proximity switch connected to one end of the start switch, the other end of the start switch connected to the positive electrode of the power supply, the other end of the normally closed contact of the rear proximity switch connected to one end of the normally open contact of the second relay, one end of the normally open contact of the front proximity switch and one end of the normally closed contact of the second relay; the other end of the normally open contact of the second relay is connected to the other end of the normally open contact of the front proximity switch, the other end of the normally open contact of the front proximity switch is connected to one end of the second relay winding, and the other end of the second relay winding is connected to the negative electrode of the power supply;

[0014] The other end of the normally closed contact of the second relay is connected to one end of the winding of the first relay, and the other end of the winding of the first relay is connected to the negative electrode of the power supply; one end of the normally open contact of the first group of switches of the first relay is connected to one end of the start switch, one end of the normally closed contact of the first group of switches of the first relay is connected to the negative electrode of the power supply, and one end of the common contact of the first group of switches of the first relay is connected to one end of the winding of the walking motor;

[0015] One end of the normally open contact of the second group of switches of the first relay is connected to the negative pole of the power supply, one end of the normally closed contact of the second group of switches of the first relay is connected to one end of the start switch, and one end of the common contact of the second group of switches of the first relay is connected to the other end of the walking motor winding.

[0016] In the above scheme: the deceleration mechanism includes a planetary reducer and a reducer, the travel motor output shaft is connected to the planetary reducer input shaft, the planetary reducer output shaft is connected to the reducer input shaft, and the reducer output shaft is connected to the travel wheel through a chain.

[0017] In the above scheme: the detection piece is tilted, and one end close to the vehicle body is lower than the other end, and the height difference between the two ends of the detection piece is smaller than the detection distance of the corresponding front proximity switch or rear proximity switch.

[0018] In the above scheme: the two ends of the blocking beam are slidably connected to the two tracks through sliding legs respectively, a slider clamped on the track is provided at the bottom of the sliding leg, a locking nut is also provided on the sliding leg, and the detection piece is fixed on the slider.

[0019] In summary, the beneficial effects of the utility model are as follows: the structure is simple and compact, and the spray limit micro switch can limit the range and angle of swing to meet the spray demand. The rotation direction of the swing motor can be stably adjusted to drive the spray assembly to swing left and right, so as to spray the vault of the tunnel. The horizontal telescopic bracket can ensure that the spray assembly is on the center line of the tunnel by adjusting the position of the fixed column and the spray assembly, thereby ensuring the spray effect. It can be applied to tunnels of different sizes and has a wide range of applications. The rotating horizontal telescopic bracket can rotate the spray assembly to the wall, which can make more space for the passing equipment to pass. It only occupies half of the space on the tunnel, reducing the occupied space, and at the same time, the spray bracket can be rotated to make room for the equipment to pass, which is convenient to avoid, and only needs to rotate the horizontal telescopic bracket. The front and rear proximity switches can stably limit the movement range of the vehicle body. At the same time, after reaching the blocking structure at the end of the track, it can automatically return to the starting point without manual control, thereby achieving two sprayings back and forth to ensure the spray effect. The blocking structure can stably block the vehicle body to prevent it from moving further due to inertia. The front proximity switch can adjust the moving direction of the vehicle body to achieve the return of the vehicle body, and the rear proximity switch can stop the driving motor of the vehicle body to achieve parking. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the utility model and a tunnel.

[0021] Figure 2 It is a schematic diagram of the vehicle body and track of the utility model.

[0022] Figure 3 This is a top view of the barrier structure.

[0023] Figure 4 This is the installation diagram of the front proximity switch.

[0024] Figure 5 It is a circuit diagram of the utility model.

[0025] Figure 6 It is a schematic diagram of the connection between vertical rods and horizontal rods.

[0026] Figure 7 It is a schematic diagram of the spray reducer, spray assembly and spray fixture.

[0027] Figure 8 This is a cross-sectional view of the spray reducer.

[0028] Fig. 9 It is a schematic diagram of the spray limit micro switch, contact spring and spray reducer. DETAILED DESCRIPTION

[0029] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0030] like Figures 1 to 9 As shown, a tracked automatic spray maintenance trolley includes a vehicle body 1, on which walking wheels 1a and a water tank are arranged, and the vehicle body 1 is equipped with a driving system and a pair of tracks 1c. The vehicle body 1 moves on the track 1a. The moving direction of the vehicle body 1 is ensured, so that the spray assembly is always on the center line of the tunnel. The track 1a is arranged close to one side of the tunnel, leaving as much passage space as possible, and the arrangement is reasonable.

[0031] A horizontal telescopic bracket is rotatably arranged on the vehicle body 1. The horizontal telescopic bracket includes a slide bar 2c, a vertical bar 2a and a transverse bar 2b. The vertical bar 2a is fixed on the vehicle body 1, and the transverse bar 2b is installed on the top of the vertical bar 2a through a rotation connection structure. A plurality of locking rings 2f are arranged at intervals on the transverse bar 2b along its extension direction. The slide bar 2c passes through all the locking rings 2f at the same time and is fixed by the locking bolts on the locking rings 2f.

[0032] The vertical rod 2a is fixed to the front side of the vehicle body 1, and the rotating connection structure is a bolt roller bearing 10, which is fixed to the top of the vertical rod 2a through a clamp 11. The bolt of the bolt roller bearing 10 is set upward, and a through hole for the bolt to pass through is set on the transverse rod 2b, and it is fixed by a nut. A cushion block 2e is arranged between the transverse rod 2b and the sliding rod 2c. The structure is simple and the arrangement is reasonable. Compared with the rotating sleeve, the bolt roller bearing 10 is more stable and not easy to fall out.

[0033] The vertical rod 2a is a round rod, and the transverse rod 2b and the slide rod 2c are both square rods. The vertical rod 2a is set as a round rod, which is convenient for fixing and rotating. The transverse rod 2b and the slide rod 2c are both square rods, which can ensure the direction of the fixed column 2d and prevent the fixed column 2d from rotating, thereby ensuring the installation stability of the spray assembly.

[0034] The end of the horizontal telescopic bracket is provided with a fixed column 2d extending upward, and a swing motor 4a is provided on the top of the fixed column 2d. The model of the swing motor 4a is YX5882-45-60. The output shaft of the swing motor 4a is connected to the input shaft of the spray reducer 4b, and the output shaft of the spray reducer 4b is connected to the spray assembly through the spray clamp 9, and the spray assembly is connected to the water supply system. The water supply system is equipped with a pressure pump 6d, and spray limit micro switches 4d are provided on both sides of the output shaft of the spray reducer 4b. Contact springs 5 ​​are provided on the output shaft of the spray reducer 4b corresponding to the two spray limit micro switches 4d, and the spray limit micro switches 4d are used to switch the rotation direction of the swing motor 4a.

[0035] Among them, the two spray limit micro switches 4d are the limit release switch SM2 and the limit reversal switch SM1 respectively. The normally closed contact of the limit release switch SM2 is connected to one end of the start switch SB1, and the other end of the start switch SB1 is connected to the positive pole of the power supply. The common contact of the limit release switch SM2 is connected to the normally open contact of the limit reversal switch SM1. The common contact of the limit reversal switch SM1 is connected to one end of the winding of the limit self-locking relay KM32 and one end of the winding of the spray reversal relay KM31. The other end of the winding of the limit self-locking relay KM32 and the other end of the winding of the spray reversal relay KM31 are both connected to the negative pole of the power supply. One end of the normally open contact of the limit self-locking relay KM32 is connected to the common contact of the limit reversal switch SM1, and the other end of the normally open contact of the limit self-locking relay KM32 is connected to the normally open contact of the limit reversal switch SM1.

[0036] One end of the starting switch SB1 is connected to the normally closed contacts of the first group of switches of the spray reversal relay KM31 and the normally open contacts of the second group of switches of the spray reversal relay KM31. The two ends of the winding of the swing motor 4a are respectively connected to the common contacts of the first group of switches and the second group of switches of the spray reversal relay KM31. The negative pole of the power supply is connected to the normally open contacts of the first group of switches of the spray reversal relay KM31 and the normally closed contacts of the second group of switches of the spray reversal relay KM31.

[0037] Both ends of the output shaft of the spray reducer 4b extend out of the housing of the spray reducer 4b, and the contact spring 5 and the spray limit micro switch 4d are fixed at one end of the output shaft of the spray reducer 4b. The spray assembly is fixed at the other end of the output shaft of the spray reducer 4b, and is respectively arranged at both ends to facilitate the installation of the spray assembly, the contact spring 5 and the spray limit micro switch 4d. The contact spring 5 is equipped with a spring mounting seat 5a, and the spring mounting seat 5a is provided with a through hole for the output shaft of the spray reducer 4b to extend, and the output shaft of the spray reducer 4b is locked by a locking nut. The contact springs 5 ​​are all installed on the spring mounting seat 5a.

[0038] The spray assembly includes an extended spray pipe 4c, the bottom end of which is detachably mounted with the output shaft of the spray reducer 4b through a spray fixture 9. A movable joint is provided at the bottom end of the extended spray pipe 4c, and is connected to a water pipe of a water supply system through the movable joint, and a spray head is detachably provided at the end of the extended spray pipe 4c.

[0039] The spray fixture 9 includes a spray fixing block 9a and a clamping piece 9b. The spray fixing block 9a is used to be fixed together with the spray reducer 4b. The spray fixing piece and the clamping piece 9b are used to clamp the extended nozzle 4c, and the extended nozzle 4c is located between the spray fixing block 9a and the clamping piece 9b. A clamping threaded hole is provided on one side of the spray fixing block 9a, and the clamping piece 9b is equipped with a pair of clamping bolts and is fixed by the clamping bolts. A through hole is provided on the spray fixing block 9a for the output shaft of the spray reducer 4b to pass through, and a tightening threaded hole is provided on the spray fixing block 9a that is perpendicular to the through hole, and is fixed by tightening with the output shaft of the spray reducer 4b by tightening the tightening bolt. The clamping is stable and not easy to fall off, and at the same time, it can also meet the swing of the spray component.

[0040] The nozzle sprays in a fan shape with a wide range, ensuring that the spray range overlaps during the forward and backward movement, avoiding spray dead corners and ensuring the spraying effect.

[0041] The driving system includes a travel motor and a reduction mechanism, the output end of the travel motor is connected to the input end of the reduction mechanism, and the output end of the reduction mechanism is connected to the travel wheel 1a. The reduction mechanism includes a planetary reducer and a reducer, the output shaft of the travel motor is connected to the input shaft of the planetary reducer, the output shaft of the planetary reducer is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to the travel wheel 1a through a chain.

[0042] A front proximity switch SQ1 and a rear proximity switch SQ2 are respectively provided on the front and rear sides of the vehicle body 1. The models of the front proximity switch SQ1 and the rear proximity switch SQ2 are both LJ18A3-5-Z / BX. The front proximity switch SQ1 is used to switch the movement in the reverse direction. The rear proximity switch SQ2 is used to stop the driving system. A blocking structure 3 is provided at intervals on the front and rear sides of the track 1c.

[0043] The blocking structure 3 includes a blocking beam 3a and a horizontally extending detection piece 3c corresponding to the front proximity switch SQ1 or the rear proximity switch SQ2. The height of the blocking beam 3a is lower than the bottom of the vehicle body 1, and is used to abut against the running wheel 1a, and the two ends of the blocking beam 3a are respectively slidably connected to the two tracks 1c through sliding legs. The bottom of the sliding leg is provided with a slider 3b that is clamped on the track 1c, and the sliding leg is also provided with a locking nut, and the detection piece 3c is fixed on the slider 3b.

[0044] One end of the normally closed contact of the rear proximity switch SQ2 is connected to one end of the start switch SB1, and the other end of the start switch SB1 is connected to the positive electrode of the power supply. The other end of the normally closed contact of the rear proximity switch SQ2 is connected to one end of the normally open contact of the second relay KM2, one end of the normally open contact of the front proximity switch SQ1, and one end of the normally closed contact of the second relay KM2. The other end of the normally open contact of the second relay KM2 is connected to the other end of the normally open contact of the front proximity switch SQ1, and the other end of the normally open contact of the front proximity switch SQ1 is connected to one end of the winding of the second relay KM2, and the other end of the winding of the second relay KM2 is connected to the negative electrode of the power supply.

[0045] The other end of the normally closed contact of the second relay KM2 is connected to one end of the winding of the first relay KM1, and the other end of the winding of the first relay KM1 is connected to the negative pole of the power supply. One end of the normally open contact of the first group of switches of the first relay KM1 is connected to one end of the start switch SB1, and one end of the normally closed contact of the first group of switches of the first relay KM1 is connected to the negative pole of the power supply. One end of the common contact of the first group of switches of the first relay KM1 is connected to one end of the winding of the travel motor.

[0046] One end of the normally open contact of the second group of switches of the first relay KM1 is connected to the negative pole of the power supply, and one end of the normally closed contact of the second group of switches of the first relay KM1 is connected to one end of the start switch SB1. One end of the common contact of the second group of switches of the first relay KM1 is connected to the other end of the winding of the travel motor. It can stably drive the travel motor to move forward, and return to the starting point after reaching the end of the track 1c.

[0047] The detection piece 3c is tilted, and one end close to the vehicle body 1 is lower than the other end, and the height difference between the two ends of the detection piece 3c is less than the detection distance of the corresponding front proximity switch SQ1 or rear proximity switch SQ2. It can ensure that the detection piece 3c can be detected, and the tilted setting ensures that the detection piece 3c can enter the detection area to avoid hitting the front proximity switch SQ1 or the rear proximity switch SQ2.

[0048] A mounting bracket is provided on the vehicle body 1 corresponding to the front proximity switch SQ1 or the rear proximity switch SQ2. The mounting bracket includes a vertical rod 5a fixed to the bottom of the vehicle body 1. The bottom end of the vertical rod 5a is provided with a mounting ring 5b for mounting the front proximity switch SQ1 or the rear proximity switch SQ2. The installation is stable. By installing the mounting bracket under the vehicle body 1, the front proximity switch SQ1 and the rear proximity switch SQ2 can be set separately as much as possible to avoid detection errors caused by surrounding objects.

Claims

1. A track-mounted automatic spray maintenance trolley, comprising a vehicle body (1) and a pair of tracks (1c), wherein the vehicle body (1) is provided with running wheels (1a) for moving on the tracks (1c), characterized in that: The vehicle body (1) is provided with a water tank and also includes a driving system. A front proximity switch (SQ1) and a rear proximity switch (SQ2) are respectively provided on the front and rear sides of the vehicle body (1). The front proximity switch (SQ1) is used to switch the movement in the reverse direction, and the rear proximity switch (SQ2) is used to stop the driving system. Blocking structures (3) are provided at intervals on the front and rear sides of the track (1c); the blocking structures (3) each include a blocking crossbeam (3a) and a detection sheet (3c) provided corresponding to the front proximity switch (SQ1) or the rear proximity switch (SQ2). The height of the blocking crossbeam (3a) is lower than the bottom of the vehicle body (1) and is used to abut against the running wheel (1a). A horizontal telescopic bracket (2) is rotatably arranged on the vehicle body (1); a fixed column (2d) extending upward is arranged at the end of the horizontal telescopic bracket (2); a swing motor (4a) is arranged on the top of the fixed column (2d); an output shaft of the swing motor (4a) is connected to an input shaft of a spray reducer (4b); the output shaft of the spray reducer (4b) is extended forward and backward and is connected to a spray assembly through a spray clamp (9); the spray assembly is connected to a water supply system, and the water supply system is equipped with a pressure pump (6d); spray limit micro switches (4d) are arranged on both sides of the output shaft of the spray reducer (4b); contact springs (5) are arranged on the output shaft of the spray reducer (4b) corresponding to the two spray limit micro switches (4d); the spray limit micro switches (4d) are used to switch the rotation direction of the swing motor (4a).

2. The tracked automatic spraying maintenance vehicle according to claim 1, characterized in that: The two spray limit micro switches (4d) are respectively a limit release switch (SM2) and a limit reversal switch (SM1); the normally closed contact of the limit release switch (SM2) is connected to one end of the start switch (SB1), and the other end of the start switch (SB1) is connected to the positive electrode of the power supply; the common contact of the limit release switch (SM2) is connected to the normally open contact of the limit reversal switch (SM1); the common contact of the limit reversal switch (SM1) is connected to one end of the winding of the limit self-locking relay (KM32) and one end of the winding of the spray reversal relay (KM31); the other end of the winding of the limit self-locking relay (KM32) and the other end of the winding of the spray reversal relay (KM31) are both connected to the negative electrode of the power supply; one end of the normally open contact of the limit self-locking relay (KM32) is connected to the common contact of the limit reversal switch (SM1), and the other end of the normally open contact of the limit self-locking relay (KM32) is connected to the normally open contact of the limit reversal switch (SM1); One end of the start switch (SB1) is connected to the normally closed contacts of the first group of switches of the spray reversal relay (KM31) and the normally open contacts of the second group of switches of the spray reversal relay (KM31), the two ends of the winding of the swing motor (4a) are respectively connected to the common contacts of the first group of switches and the second group of switches of the spray reversal relay (KM31), and the negative pole of the power supply is connected to the normally open contacts of the first group of switches of the spray reversal relay (KM31) and the normally closed contacts of the second group of switches of the spray reversal relay (KM31).

3. The tracked automatic spraying maintenance vehicle according to claim 1 is characterized in that: The spray assembly comprises an extended spray pipe (4c), the bottom end of the extended spray pipe (4c) is detachably mounted on the output shaft of the spray reducer (4b) via a spray fixture (9), a movable joint is provided at the bottom end of the extended spray pipe (4c), and is connected to a water pipe (6a) of a water supply system via the movable joint, and a spray head is detachably provided at the end of the extended spray pipe (4c).

4. The tracked automatic spraying maintenance vehicle according to claim 3 is characterized in that: The spray fixture (9) comprises a spray fixing block (9a) and a clamping piece (9b), wherein the spray fixing block (9a) is used to be fixed together with the spray reducer (4b), and the spray fixing piece and the clamping piece (9b) are used to clamp the extended spray pipe (4c), and a clamping threaded hole is provided on one side of the spray fixing block (9a), and the clamping piece (9b) is equipped with a pair of clamping bolts and is fixed by the clamping bolts; The spray fixing block (9a) is provided with a through hole for the output shaft of the spray reducer (4b) to pass through, and the spray fixing block (9a) is provided with a tightening threaded hole arranged perpendicular to the through hole, and is fixed to the output shaft of the spray reducer (4b) by tightening bolts.

5. The tracked automatic spraying maintenance vehicle according to claim 1 is characterized in that: The driving system comprises a travel motor and a reduction mechanism, wherein the output end of the travel motor is connected to the input end of the reduction mechanism, and the output end of the reduction mechanism is connected to a travel wheel (1a).

6. The tracked automatic spraying maintenance vehicle according to claim 5, characterized in that: The drive system also includes a walking drive circuit, wherein the walking drive circuit includes one end of a normally closed contact of a rear proximity switch (SQ2) connected to one end of a start switch (SB1), the other end of the start switch (SB1) connected to the positive electrode of a power supply, the other end of the normally closed contact of the rear proximity switch (SQ2) connected to one end of a normally open contact of a second relay (KM2), one end of a normally open contact of a front proximity switch (SQ1) and one end of a normally closed contact of the second relay (KM2); the other end of the normally open contact of the second relay (KM2) connected to the other end of the normally open contact of the front proximity switch (SQ1), the other end of the normally open contact of the front proximity switch (SQ1) connected to one end of a winding of the second relay (KM2), and the other end of the winding of the second relay (KM2) connected to the negative electrode of a power supply; The other end of the normally closed contact of the second relay (KM2) is connected to one end of the winding of the first relay (KM1), and the other end of the winding of the first relay (KM1) is connected to the negative electrode of the power supply; one end of the normally open contact of the first group of switches of the first relay (KM1) is connected to one end of the start switch (SB1), one end of the normally closed contact of the first group of switches of the first relay (KM1) is connected to the negative electrode of the power supply, and one end of the common contact of the first group of switches of the first relay (KM1) is connected to one end of the winding of the travel motor; One end of the normally open contact of the second group of switches of the first relay (KM1) is connected to the negative pole of the power supply, one end of the normally closed contact of the second group of switches of the first relay (KM1) is connected to one end of the start switch (SB1), and one end of the common contact of the second group of switches of the first relay (KM1) is connected to the other end of the walking motor winding.

7. The tracked automatic spraying maintenance vehicle according to claim 5, characterized in that: The deceleration mechanism comprises a planetary reducer and a reducer, the travel motor output shaft is connected to the planetary reducer input shaft, the planetary reducer output shaft is connected to the reducer input shaft, and the reducer output shaft is connected to the travel wheel (1a) via a chain.

8. The tracked automatic spraying maintenance vehicle according to claim 1, characterized in that: The detection piece (3c) is arranged obliquely, and one end close to the vehicle body (1) is lower than the other end, and the height difference between the two ends of the detection piece (3c) is smaller than the detection distance of the corresponding front proximity switch (SQ1) or rear proximity switch (SQ2).

9. The tracked automatic spraying maintenance vehicle according to claim 1, characterized in that: The two ends of the blocking beam (3a) are respectively slidably connected to two rails (1c) via sliding legs, a slider (3b) clamped on the rail (1c) is provided at the bottom of the sliding leg, a locking nut is also provided on the sliding leg, and the detection sheet (3c) is fixed on the slider (3b).

Images