Spraying equipment with rotary spraying function

Abstract

The utility model discloses rotary spraying equipment which comprises a telescopic stand column which is arranged on a vehicle body and extends upwards, a swing motor is arranged at the top of the telescopic 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 is arranged in a front-back extending mode. A spraying assembly is connected through the spraying clamp; the spraying assembly is communicated with a water supply system, and the water supply system is provided with a pressure pump; limiting microswitches are arranged on the left side and the right side of an output shaft of the spraying speed reducer, contact elastic pieces corresponding to the two limiting microswitches are arranged on the output shaft of the spraying speed reducer, and the limiting microswitches are used for switching the rotating direction of the swing motor. The device is simple in structure, small in occupied space, flexible to move and capable of automatically spraying and maintaining the vault.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete curing, in particular to a rotary spraying device. Background Art

[0002] With the increasing development of domestic transportation, tunnel construction is also increasing. After tunnel excavation is completed, concrete is poured into the soil using a pouring trolley to reinforce it. After pouring, the concrete needs to be regularly sprayed for maintenance. Conventional maintenance methods involve manual spraying or using a maintenance trolley. Manual maintenance requires multiple people, is labor-intensive, and manual control can lead to uneven spraying. Another common method is to use multiple nozzles fixed to the pipeline for water spraying, but this can easily lead to severe pressure drop, uneven pressure, and uneven maintenance.

[0003] CN 204149309 U discloses a tunnel secondary lining maintenance and dust removal spray trolley, comprising a portal-shaped load-bearing frame, a traveling device, and a spray assembly; the spray assembly comprises an arched water spray pipe and a water collection trough; the lower end of the arched water spray pipe is connected in sequence to a pressurized water pump and a water storage tank; the water collection trough is connected to the water storage tank via a recovery pipe. However, due to the large size and high equipment cost of the trolley, its applicability is limited, making it suitable only for tunnels larger than the trolley. Furthermore, the trolley only has a clearance hole at the bottom, making it difficult to avoid other larger equipment from passing through. Therefore, there is an urgent need for a compact, mobile, and flexible spraying device for spraying. Utility Model Content

[0004] The utility model aims to solve the technical problems existing in the prior art, and particularly innovatively proposes a rotary spraying spraying device with a simple structure, small space occupation, flexible movement, and the ability to automatically spray and maintain the vault.

[0005] In order to achieve the above-mentioned object, the utility model provides a spray device for rotary spraying, comprising a vehicle body provided with an upwardly extending telescopic column, a swing motor provided on the top of the telescopic column, an output shaft of the swing motor connected to an input shaft of a spray reducer, the output shaft of the spray reducer extending forward and backward and 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; limit micro switches are provided on both sides of the output shaft of the spray reducer, and contact springs are provided on the output shaft of the spray reducer corresponding to the two limit micro switches, and the limit micro switches are used to switch the rotation direction of the swing motor;

[0006] The two 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;

[0007] 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.

[0008] In the above scheme, the spray assembly includes an extended nozzle, the bottom end of which is detachably mounted to the output shaft of the spray reducer via a spray fixture. A movable joint is provided at the bottom end of the extended nozzle, which is connected to the water pipe of the water supply system via the movable joint. A nozzle is detachably provided at the end of the extended nozzle. The movable joint is capable of rotating to prevent distortion of the water pipe during rotation, thereby ensuring water output and the service life of the pipe. The extended nozzle is detachable and can be installed in different lengths according to the tunnel size, shortening the spray distance between the nozzle and the concrete curing surface and better wetting the concrete surface.

[0009] In the above solution, the spray nozzle sprays in a fan-shaped shape that spreads forward and backward, which can increase the spray range and avoid the generation of spray dead angles.

[0010] In the above solution: 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 block and the clamping piece are used to clamp the extended nozzle, 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 to the output shaft of the spray reducer by a tightening bolt.

[0012] In summary, the beneficial effects of the utility model are as follows: the structure is simple and compact, the limit micro switch can limit the range and angle of swinging to meet the spraying needs, and the combined circuit can stably adjust the rotation direction of the swing motor, thereby driving the spray assembly to swing left and right, thereby spraying the tunnel vault. The provided vehicle body can drive the spray assembly to move forward along the extension direction of the tunnel, thereby automatically maintaining the tunnel vault, and the movement is flexible and can avoid in time. The provided telescopic column can adjust the distance between the nozzle and the inner wall of the tunnel, thereby adjusting the spraying distance. The provided pressure pump can increase the pressure to ensure the pressure of the sprayed curing liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the utility model and a tunnel.

[0014] Figure 2 It is a schematic diagram of the spray reducer, spray assembly and spray fixture.

[0015] Figure 3 It is a cross-sectional view of the spray reducer.

[0016] Figure 4 It is a schematic diagram of the limit micro switch, contact spring and spray reducer.

[0017] Figure 5 It is a circuit diagram of the present utility model. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the following embodiments and accompanying drawings:

[0019] like Figures 1 to 5 The figure shows a rotary spraying device comprising a body 1, which is provided with an upwardly extending telescopic column 2. A swing motor 6 (model YX5882-45-60) is mounted on top of the telescopic column 2. The output shaft of the swing motor 6 is connected to the input shaft of a spray reducer 7. The output shaft of the spray reducer 7 is connected to a spray assembly via a spray fixture 9. The spray assembly is connected to a water supply system equipped with a pressure pump 3. Limit microswitches 4 are provided on both sides of the output shaft of the spray reducer 7. Contact springs 5 ​​are provided on the corresponding two limit microswitches 4 on the output shaft of the spray reducer 7. The limit microswitches 4 are used to switch the rotation direction of the swing motor 6.

[0020] The two limit microswitches 4 are the limit release switch SM2 and the 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 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 KM2 and one end of the winding of the spray reversal relay KM1. The other ends of the winding of the limit self-locking relay KM2 and the other ends of the winding of the spray reversal relay KM1 are both connected to the negative pole of the power supply. One end of the normally open contact of the limit self-locking relay KM2 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 KM2 is connected to the normally open contact of the limit reversal switch SM1.

[0021] 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 KM1 and the normally open contacts of the second group of switches of the spray reversal relay KM1. The two ends of the winding of the swing motor 6 are respectively connected to the common contacts of the first group of switches and the second group of switches of the spray reversal relay KM1. 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 KM1 and the normally closed contacts of the second group of switches of the spray reversal relay KM1.

[0022] Both ends of the output shaft of the spray reducer 7 extend outside the housing. A contact spring 5 and a limit microswitch 4 are fixed to one end of the output shaft. The spray assembly is fixed to the other end of the output shaft, located at both ends to facilitate installation of the spray assembly, contact spring 5, and limit microswitch 4. The contact spring 5 is equipped with a spring mounting seat 5a, which has a through hole for the output shaft of the spray reducer 7 to extend through. A lock nut is used to lock the output shaft of the spray reducer 7. The contact spring 5 is mounted on the spring mounting seat 5a.

[0023] The spray assembly includes an extended nozzle 8a, the bottom end of which is detachably mounted to the output shaft of the spray reducer 7 via a spray fixture 9. A movable joint 8c is provided at the bottom end of the extended nozzle 8a, which is connected to the water pipe 3a of the water supply system via the movable joint 8c. A spray head 8b is detachably mounted at the end of the extended nozzle 8a.

[0024] 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 7. The spray fixing block 9a and the clamping piece 9b are used to clamp the extended nozzle 8a, and the extended nozzle 8a 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 for the output shaft of the spray reducer 7 to pass through is provided on the spray fixing block 9a, and a tightening threaded hole arranged perpendicular to the through hole is provided on the spray fixing block 9a, and is fixed by tightening with the output shaft of the spray reducer 7 by 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.

[0025] The spraying shape of the nozzle 8b is fan-shaped and has a wide range, which ensures that the spraying range overlaps during the forward and backward movement, avoids the generation of spraying dead angles, and ensures the spraying effect.

Claims

1. A rotary spraying device, characterized in that: The invention comprises a vehicle body (1) provided with a telescopic column (2) extending upward, a swing motor (6) provided on the top of the telescopic column (2), an output shaft of the swing motor (6) connected to an input shaft of a spray reducer (7), the output shaft of the spray reducer (7) extending forward and backward and connected to a spray assembly via 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 (3); limit micro switches (4) are provided on both sides of the output shaft of the spray reducer (7), and contact springs (5) are provided on the corresponding two limit micro switches (4) on the output shaft of the spray reducer (7), and the limit micro switches (4) are used to switch the rotation direction of the swing motor (6); The two limit micro switches (4) 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 (KM2) and one end of the winding of the spray reversal relay (KM1); the other end of the winding of the limit self-locking relay (KM2) and the other end of the winding of the spray reversal relay (KM1) are both connected to the negative electrode of the power supply; one end of the normally open contact of the limit self-locking relay (KM2) 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 (KM2) 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 (KM1) and the normally open contacts of the second group of switches of the spray reversal relay (KM1), the two ends of the winding of the swing motor (6) are respectively connected to the common contacts of the first group of switches and the second group of switches of the spray reversal relay (KM1), and the negative electrode of the power supply is connected to the normally open contacts of the first group of switches of the spray reversal relay (KM1) and the normally closed contacts of the second group of switches of the spray reversal relay (KM1).

2. The rotary spraying device according to claim 1, characterized in that: The spray assembly comprises an extended nozzle (8a), the bottom end of the extended nozzle (8a) being detachably mounted on the output shaft of the spray reducer (7) via a spray fixture (9), a movable joint (8c) being provided at the bottom end of the extended nozzle (8a), and being connected to a water pipe (3a) of a water supply system via the movable joint (8c), and a spray head (8b) being detachably provided at the end of the extended nozzle (8a).

3. The rotary spraying device according to claim 2, characterized in that: The spray nozzle (8b) sprays in a fan-shaped shape.

4. The rotary spraying device according to claim 1, 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 (7), and the spray fixing block (9a) and the clamping piece (9b) are used to clamp the extended spray pipe (8a), 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 (7) 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 (7) by tightening bolts.

Images