Automatic pipeline measuring device

Abstract

The utility model relates to the field of pipeline measurement, and discloses an automatic pipeline measuring device which comprises a detection head and a control box, a winch is fixedly installed in the control box, a lifting rope is wound around the winch, a guide column is fixedly installed at the end, away from the winch, of the lifting rope, and a vertical hole is formed in the inner wall of the bottom of the control box. And the bottom ends of the guide columns penetrate through the vertical holes and are fixedly provided with mounting seats. The device has the following advantages and effects that the mounting base, the detection head and the high-definition camera can be controlled to be stably lowered in the underground drainage pipeline, and in the lowering process, the phenomena of swinging and shaking of the mounting base, the detection head and the high-definition camera cannot be caused; the underground drainage pipeline detection and measurement device can effectively avoid the phenomenon that the mounting base, the detection head and the high-definition camera collide with the inner wall of an underground drainage pipeline, can improve the accuracy of a detection and measurement result, is suitable for detection and measurement of various underground drainage pipelines with different inner pipe diameters, and is good in practicability.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline measurement, and in particular to an automatic pipeline measurement device. Background Art

[0002] Underground drainage pipes are an extremely important municipal facility. Once drainage facilities are aged, blocked, broken, leaked, etc., they will not only pollute the environment but also threaten the safety of residents. Therefore, it is very important to conduct daily inspection and measurement of urban underground drainage pipes, find problems in time, and perform maintenance in time. After searching, the patent document with the authorization announcement number CN213930186U announced a pipeline automatic measurement device, which includes a detection head, a control box, and a plurality of legs hingedly connected to the bottom of the control box. A guide sleeve is provided at the bottom of the control box, and a guide column is slidably provided in the guide sleeve. The bottom end of the guide column extends out of the bottom of the guide sleeve and is connected to the detection head. The bottom end of the guide column is provided with a mounting assembly for fixing the detection head. A first cavity is provided in the control box, and the top end of the guide column extends into the first cavity. A height adjustment assembly for driving the guide column to rise and fall is provided in the first cavity, which has the effect of facilitating the detection of positions at different depths in the pipeline and improving the detection efficiency.

[0003] In actual operation, it was found that the above-mentioned related schemes still have at least the following shortcomings: in the process of using a winch to gradually release the wire rope to lower the detection head into the underground drainage pipe, it does not have the function of guiding and positioning the lower path of the detection head, and thus cannot ensure that the detection head is smoothly lowered in the underground drainage pipe. It is prone to shaking and swinging, and is prone to collision with the inner wall of the underground drainage pipe, which will also affect the accuracy of the detection and measurement results. Therefore, we propose a pipeline automatic measuring device to solve the above problems. Utility Model Content

[0004] The purpose of the present application is to provide an automatic pipeline measuring device, which can control the stable lowering of a mounting seat, a detection head and a high-definition camera in an underground drainage pipeline. During the lowering process, the mounting seat, the detection head and the high-definition camera will not swing or shake, and the mounting seat, the detection head and the high-definition camera can be effectively prevented from colliding with the inner wall of the underground drainage pipeline, thereby improving the accuracy of the detection and measurement results, and is suitable for detection and measurement of underground drainage pipelines with a variety of different inner pipe diameters, with good practicality.

[0005] The above-mentioned technical purpose of the present application is achieved through the following technical solutions: a pipeline automatic measuring device, including a detection head and a control box, a winch is fixedly installed in the control box, a lifting rope is wound on the winch, a guide column is fixedly installed on the end of the lifting rope away from the winch, a vertical hole is opened on the bottom inner wall of the control box, the bottom end of the guide column passes through the vertical hole and is fixedly installed with a mounting seat, a cavity is provided in the mounting seat, a motor is fixedly installed in the cavity, the output shaft end of the motor extends to the outside of the mounting seat and is fixedly installed with a mounting plate, the detection head is detachably fixedly installed on the bottom of the mounting plate, a high-definition camera is fixedly installed on the outer cylindrical side wall of the mounting plate, a touch display screen is fixedly installed on the outer side wall of the control box, a plurality of legs are hingedly installed on the bottom of the control box, four groups of guide and positioning components are provided on the mounting seat, the four groups of guide and positioning components are distributed in an equidistant ring, and the four guide and positioning components are used to guide and limit the descending direction of the mounting seat.

[0006] The present application is further configured as follows: the guide positioning assembly includes a crossbeam, a telescopic shaft, a telescopic block, a spring, a U-shaped plate, a roller, a screw rod, a shaft seat, a driven bevel gear, a rotating shaft, a knob and an active bevel gear; the crossbeam is fixedly mounted on the outer side wall of the mounting seat; a receiving groove is provided at one end of the crossbeam away from the mounting seat; the telescopic shaft is slidably mounted in the receiving groove; one end of the telescopic shaft extends outside the receiving groove and is provided with a slide groove; the telescopic block is slidably mounted in the slide groove; one end of the spring is fixedly connected to one side of the telescopic block located in the slide groove; the other end of the spring is fixedly connected to one inner wall of the slide groove; the telescopic block extends outside the slide groove away from the spring; the U-shaped The plate is fixedly installed on a side of the telescopic block outside the slide groove, the roller is rotatably installed on the U-shaped plate, a threaded groove is opened at one end of the telescopic shaft located in the storage groove, the screw rod is threadedly installed in the threaded groove, the shaft seat is fixedly installed on the inner wall of the storage groove on one side close to the mounting seat, one end of the screw rod extends outside the threaded groove and is rotatably connected to the shaft seat, the driven bevel gear is fixedly sleeved on the screw rod and is located between the telescopic shaft and the shaft seat, a mounting hole is opened on the top inner wall of the storage groove, the rotating shaft is rotatably installed in the mounting hole through a bearing, the knob is fixedly installed on the top end of the rotating shaft, the active bevel gear is fixedly installed on the bottom end of the rotating shaft, and the active bevel gear is meshed with the driven bevel gear.

[0007] The present application is further configured as follows: limiting grooves are provided on the top inner wall and the bottom inner wall of the storage groove, limiting rods are fixedly installed on the top and the bottom of the telescopic shaft, and the two limiting rods are slidably installed in the corresponding limiting grooves respectively.

[0008] The present application is further configured as follows: the cross-section of the slide groove and the cross-section of the telescopic block are both rectangular.

[0009] The present application is further configured as follows: an observation hole is provided on the front side wall of the control box, and an observation mirror is fixedly installed in the observation hole.

[0010] The present application is further configured as follows: two fill-in lights are fixedly mounted on the bottom of the mounting plate, and the two fill-in lights are symmetrically arranged on both sides of the detection head.

[0011] The present application is further configured as follows: scale lines are provided on the suspension rope.

[0012] The present application is further configured as follows: a U-shaped handle is fixedly installed on the top of the control box.

[0013] The present application includes at least one of the following beneficial technical effects:

[0014] 1. The present application utilizes a guide positioning assembly composed of a crossbeam, a telescopic shaft, a telescopic block, a spring, a U-shaped plate, a roller, a screw rod, a shaft seat, a driven bevel gear, a rotating shaft, a knob and an active bevel gear. Under the joint cooperation of four sets of guide positioning assemblies, the present application can control the mounting seat, the detection head and the high-definition camera to be smoothly lowered in the underground drainage pipe. During the lowering process, the mounting seat, the detection head and the high-definition camera will not swing or shake, and the mounting seat, the detection head and the high-definition camera can be effectively prevented from colliding with the inner wall of the underground drainage pipe, thereby improving the accuracy of the detection and measurement results. The present application is suitable for detection and measurement of underground drainage pipes with a variety of different inner pipe diameters, and has good practicality.

[0015] 2. This application can detect and measure the presence of toxic gas, polluted gas and gas concentration in the underground drainage pipe by using a detection head, and can use a high-definition camera to photograph the internal conditions of the underground drainage pipe, thereby facilitating the observation of whether there are cracks, damage, etc. on the inner wall of the underground drainage pipe. The data measured by the detection head and the images taken by the high-definition camera can be displayed on the touch screen for the convenience of ground staff to watch.

[0016] 3. This application enables the high-definition camera to more clearly capture the interior of the underground drainage pipe by turning on two fill lights for lighting.

[0017] 4. This application can determine the descent height of the detection head by observing the scale lines on the suspension rope.

[0018] 5. This application can control the horizontal rotation of the mounting plate, the detection head and the high-definition camera by controlling the forward or reverse rotation of the motor, thereby increasing the detection range and providing a more comprehensive detection of the interior of the underground drainage pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of this embodiment.

[0020] Figure 2 It is a schematic diagram of the main cross-sectional structure of this embodiment.

[0021] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A.

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the guide and positioning component.

[0023] In the figure, 1. detection head; 2. control box; 3. winch; 4. lifting rope; 5. guide column; 6. mounting seat; 7. motor; 8. mounting plate; 9. high-definition camera; 10. touch screen; 11. outrigger; 12. crossbeam; 13. storage slot; 14. telescopic shaft; 15. slide slot; 16. telescopic block; 17. spring; 18. U-shaped plate; 19. roller; 20. threaded groove; 21. screw rod; 22. shaft seat; 23. driven bevel gear; 24. rotating shaft; 25. knob; 26. active bevel gear; 27. observation mirror; 28. fill light. DETAILED DESCRIPTION

[0024] The technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0025] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The present application provides an automatic pipeline measuring device, including a detection head 1 and a control box 2, a winch 3 is fixedly installed in the control box 2, a hoisting rope 4 is wound on the winch 3, and a guide column 5 is fixedly installed at one end of the hoisting rope 4 away from the winch 3, and the winch 3 is used to conveniently reel in or release the hoisting rope 4, so that the lifting height of the guide column 5 can be adjusted, a vertical hole is opened on the bottom inner wall of the control box 2, the bottom end of the guide column 5 passes through the vertical hole and is fixedly installed with a mounting seat 6, a cavity is provided in the mounting seat 6, a motor 7 is fixedly installed in the cavity, the output shaft end of the motor 7 extends to the outside of the mounting seat 6 and is fixedly installed with a mounting plate 8, the motor 7 is used to control the horizontal rotation of the mounting plate 8, the motor 7 adopts a forward and reverse motor, and the detection head 1 is detachably fixedly installed at the bottom of the mounting plate 8, it should be noted that the detection head 1 can be fixed and fixed to the bottom of the mounting plate 8 by existing bolt fixing or snap fixing, the detection head 1 is an existing gas detection instrument for detecting and measuring whether there is poisonous gas, polluted gas and gas concentration in underground drainage pipelines, wherein:

[0026] A high-definition camera 9 is fixedly mounted on the outer circumferential side wall of the mounting plate 8. The high-definition camera 9 is used to photograph the internal conditions of the underground drainage pipe, thereby facilitating observation of whether there are cracks, damage, etc. on the inner wall of the underground drainage pipe. A touch screen 10 is fixedly mounted on the outer side wall of the control box 2. The detection head 1 and the high-definition camera 9 are electrically connected to the touch screen 10. The touch screen 10 is used to display the data measured by the detection head 1 and also to display the images captured by the high-definition camera 9. A plurality of legs 11 are hingedly mounted on the bottom of the control box 2. The plurality of legs 11 can be used to stably support the control box 2. In this embodiment, Figure 1As shown, the number of legs 11 is set to three, and four groups of guide positioning components are arranged on the mounting seat 6. The four groups of guide positioning components are distributed in an equidistant ring. The four guide positioning components are used to guide and limit the descending direction of the mounting seat 6. The guide positioning components include a crossbeam 12, a telescopic shaft 14, a telescopic block 16, a spring 17, a U-shaped plate 18, a roller 19, a screw rod 21, a shaft seat 22, a driven bevel gear 23, a rotating shaft 24, a knob 25 and an active bevel gear 26. The crossbeam 12 is fixedly mounted on the outer side wall of the mounting seat 6, and a storage groove 13 is opened at one end of the crossbeam 12 away from the mounting seat 6. The telescopic shaft 1 4 is slidably installed in the storage groove 13, one end of the telescopic shaft 14 extends to the outside of the storage groove 13 and is provided with a slide groove 15, the telescopic block 16 is slidably installed in the slide groove 15, one end of the spring 17 is fixedly connected to the side of the telescopic block 16 located in the slide groove 15, the other end of the spring 17 is fixedly connected to the inner wall of one side of the slide groove 15, the telescopic block 16 extends to the outside of the slide groove 15 away from the spring 17, the U-shaped plate 18 is fixedly installed on the side of the telescopic block 16 located outside the slide groove 15, the roller 19 is rotatably installed on the U-shaped plate 18, the end of the telescopic shaft 14 located in the storage groove 13 is provided with a threaded groove 20, the screw rod 21 The thread is installed in the thread groove 20, and the shaft seat 22 is fixedly installed on the inner wall of the storage groove 13 near the mounting seat 6. One end of the screw rod 21 extends outside the thread groove 20 and is rotatably connected to the shaft seat 22. The driven bevel gear 23 is fixedly sleeved on the screw rod 21 and is located between the telescopic shaft 14 and the shaft seat 22. A mounting hole is opened on the top inner wall of the storage groove 13. The rotating shaft 24 is rotatably installed in the mounting hole through a bearing. The knob 25 is fixedly installed on the top of the rotating shaft 24, and the active bevel gear 26 is fixedly installed on the bottom end of the rotating shaft 24. The active bevel gear 26 is meshed with the driven bevel gear 23, and the knob 25 can be used to conveniently rotate The movable shaft 24 and the active bevel gear 26 can control the rotation of the screw rod 21 by utilizing the meshing transmission effect of the active bevel gear 26 and the driven bevel gear 23. The threaded connection between the screw rod 21 and the threaded groove 20 can control the telescopic shaft 14 to slide in the receiving groove 13, and then the distance between the roller 19 and the mounting seat 6 can be adjusted to adapt to the rolling contact between the roller 19 and the inner wall of the underground drainage pipe with different inner diameters. The elastic force of the spring 17 can be compressed and deformed to apply a horizontal force to the roller 19, thereby ensuring that the roller 19 is in effective contact with the inner wall of the underground drainage pipe.

[0027] In this embodiment, it should be noted that a multi-control switch (not drawn in this article) is installed on the control box 2, and the detection head 1, winch 3, motor 7, high-definition camera 9, touch display screen 10 and the multi-control switch can be electrically connected to an external power supply through wires, and the multi-control switch can be used to control the detection head 1, winch 3, motor 7, high-definition camera 9, touch display screen 10 to be powered on and used respectively.

[0028] In this embodiment, in order to block and limit the moving stroke of the telescopic shaft 14, the telescopic shaft 14 is placed out of the storage groove 13, and limiting grooves are opened on the top inner wall and the bottom inner wall of the storage groove 13. Limiting rods are fixedly installed on the top and bottom of the telescopic shaft 14, and the two limiting rods are slidably installed in the corresponding limiting grooves respectively.

[0029] In this embodiment, in order to ensure that the roller 19 can effectively and smoothly roll in the vertical direction on the inner wall of the underground drainage pipe, the cross-section of the slide groove 15 and the cross-section of the telescopic block 16 are both set to be rectangular.

[0030] In this embodiment, in order to facilitate observation of the internal conditions of the control box 2, an observation hole is opened on the front side wall of the control box 2, and an observation mirror 27 is fixedly installed in the observation hole.

[0031] In this embodiment, in order to allow the high-definition camera 9 to more clearly photograph the interior of the underground drainage pipe, two fill lights 28 are fixedly installed at the bottom of the mounting plate 8 , and the two fill lights 28 are symmetrically arranged on both sides of the detection head 1 .

[0032] In this embodiment, in order to facilitate the determination of the descending height of the detection head 1 , scale lines are provided on the suspension rope 4 .

[0033] In this embodiment, in order to facilitate the carrying of the entire device, a U-shaped handle is fixedly installed on the top of the control box 2.

[0034] Through the above structure, the pipeline automatic measuring device provided by the present application can control the mounting seat 6, the detection head 1 and the high-definition camera 9 to be smoothly lowered in the underground drainage pipe during use. During the lowering process, the mounting seat 6, the detection head 1 and the high-definition camera 9 will not be swung or shaken, and the mounting seat 6, the detection head 1 and the high-definition camera 9 can be effectively prevented from colliding with the inner wall of the underground drainage pipe, thereby improving the accuracy of the detection and measurement results, and is suitable for detection and measurement of underground drainage pipes of various inner pipe diameters, with good practicality. During specific operation, multiple legs 11 are used to The control box 2, the mounting seat 6, the mounting plate 8, the detection head 1 and the high-definition camera 9 are stably supported on the pipe mouth of the underground drainage pipe. After the power is turned on, the winch 3 is started to rotate forward and the suspension rope 4 is gradually released to control the mounting seat 6, the mounting plate 8, the detection head 1 and the high-definition camera 9 to descend. When the four beams 12 just descend to the pipe mouth, the winch 3 is stopped, and then the four knobs 25 are turned clockwise in sequence. The knobs 25 drive the rotating shaft 24 and the active bevel gear 26 to rotate clockwise, so that the active bevel gear 26 drives the driven bevel gear 23 and the screw rod 21 to rotate, and the telescopic shaft 14 gradually moves toward the storage slot 1. 3, when the two rollers 19 on the left and right sides are adjusted to contact the inner wall of the underground drainage pipe, and the two rollers 19 on the front and rear sides are adjusted to contact the inner wall of the underground drainage pipe, the four springs 17 are all compressed and deformed to generate elastic force, and then the detection head 1, the high-definition camera 9 and the touch display screen 10 are turned on, and the winch 3 is continuously controlled to rotate forward to gradually release the suspension rope 4. Under the dead weight of the mounting seat 6, the mounting plate 8, the detection head 1 and the high-definition camera 9, the auxiliary guiding effect of the four rollers 19 can ensure that the mounting seat 6, the mounting plate 8, the detection head 1 and the high-definition camera 9 are The camera head 9 stably descends in the vertical direction in the underground drainage pipe, which can effectively prevent the mounting base 6, the mounting plate 8, the detection head 1 and the high-definition camera 9 from shaking and colliding with the inner wall of the underground drainage pipe. The detection head 1 can be used to detect and measure whether there is poisonous gas, polluted gas and gas concentration in the underground drainage pipe, and the high-definition camera 9 can be used to shoot the internal situation of the underground drainage pipe, so as to facilitate the observation of whether there are cracks, damages and the like on the inner wall of the underground drainage pipe. The data measured by the detection head 1 and the pictures shot by the high-definition camera 9 can be displayed on the touch screen 10 for the convenience of ground staff to watch;

[0035] During the detection and measurement process, by turning on the two fill lights 28 for lighting, the high-definition camera 9 can more clearly photograph the interior of the underground drainage pipe. By observing the scale lines on the suspension rope 4, the descending height of the detection head 1 can be determined. By controlling the forward or reverse rotation of the motor 7, the mounting plate 8, the detection head 1 and the high-definition camera 9 can be controlled to rotate horizontally, which can increase the detection range and thus make the detection of the interior of the underground drainage pipe more comprehensive.

[0036] After the detection is completed, the winch 3 is controlled to reverse and reel in the lifting rope 4, so that the mounting seat 6, the mounting plate 8, the detection head 1 and the high-definition camera 9 can be controlled to be steadily lifted up and pulled out of the underground drainage pipe. By turning the four knobs 25 counterclockwise in sequence, the four telescopic shafts 14 can be gradually retracted into the corresponding storage grooves 13;

[0037] By rotating the four knobs 25 in sequence, the distance between the roller 19 and the mounting base 6 can be adjusted, so that it is suitable for detecting and measuring underground drainage pipes with different inner pipe diameters. This ensures that the mounting base 6, the mounting plate 8, the detection head 1 and the high-definition camera 9 can be lowered smoothly and vertically when they are lowered to underground drainage pipes with different inner pipe diameters for detection and measurement operations.

Claims

1. A pipeline automatic measuring device, characterized in that: The invention comprises a detection head (1) and a control box (2), wherein a winch (3) is fixedly installed in the control box (2), a hoisting rope (4) is wound on the winch (3), a guide column (5) is fixedly installed at one end of the hoisting rope (4) away from the winch (3), a vertical hole is opened on the inner wall of the bottom of the control box (2), the bottom end of the guide column (5) passes through the vertical hole and is fixedly installed with a mounting seat (6), a cavity is arranged in the mounting seat (6), a motor (7) is fixedly installed in the cavity, and the output shaft end of the motor (7) extends to the outside of the mounting seat (6) and is fixedly installed. A mounting plate (8) is fixedly installed, the detection head (1) is detachably fixedly installed on the bottom of the mounting plate (8), a high-definition camera (9) is fixedly installed on the outer circular side wall of the mounting plate (8), a touch display screen (10) is fixedly installed on the outer side wall of the control box (2), and a plurality of legs (11) are hingedly installed on the bottom of the control box (2), and four groups of guide positioning components are arranged on the mounting seat (6), and the four groups of guide positioning components are distributed in an annular shape with equal spacing, and the four guide positioning components are used to guide and limit the descending direction of the mounting seat (6).

2. The pipeline automatic measuring device according to claim 1 is characterized in that: The guide positioning assembly comprises a crossbeam (12), a telescopic shaft (14), a telescopic block (16), a spring (17), a U-shaped plate (18), a roller (19), a screw rod (21), a shaft seat (22), a driven bevel gear (23), a rotating shaft (24), a knob (25) and an active bevel gear (26); the crossbeam (12) is fixedly mounted on the outer side wall of the mounting seat (6); a receiving groove (13) is formed at one end of the crossbeam (12) away from the mounting seat (6); the telescopic shaft (14) is slidably mounted on the receiving groove (13) and the receiving groove (13) is provided on the outer side wall of the mounting seat (6). The receiving groove (13) is provided with one end of the telescopic shaft (14) extending to the outside of the receiving groove (13) and opening a slide groove (15), the telescopic block (16) is slidably installed in the slide groove (15), one end of the spring (17) is fixedly connected to one side of the telescopic block (16) located in the slide groove (15), the other end of the spring (17) is fixedly connected to one side of the inner wall of the slide groove (15), the side of the telescopic block (16) away from the spring (17) extends to the outside of the slide groove (15), and the U-shaped plate (1 8) is fixedly mounted on a side of the telescopic block (16) outside the slide groove (15), the roller (19) is rotatably mounted on the U-shaped plate (18), one end of the telescopic shaft (14) located in the receiving groove (13) is provided with a thread groove (20), the screw rod (21) is threadedly mounted in the thread groove (20), the shaft seat (22) is fixedly mounted on an inner wall of one side of the receiving groove (13) close to the mounting seat (6), one end of the screw rod (21) extends outside the thread groove (20) and is connected to the shaft seat (2 2) a rotational connection, wherein the driven bevel gear (23) is fixedly sleeved on the screw rod (21) and is located between the telescopic shaft (14) and the shaft seat (22); a mounting hole is provided on the top inner wall of the receiving groove (13); the rotating shaft (24) is rotatably mounted in the mounting hole through a bearing; the knob (25) is fixedly mounted on the top end of the rotating shaft (24); the active bevel gear (26) is fixedly mounted on the bottom end of the rotating shaft (24); and the active bevel gear (26) is meshed with the driven bevel gear (23).

3. The pipeline automatic measuring device according to claim 2 is characterized in that: Limiting grooves are provided on the top inner wall and the bottom inner wall of the storage groove (13), and limiting rods are fixedly installed on the top and the bottom of the telescopic shaft (14), and the two limiting rods are respectively slidably installed in the corresponding limiting grooves.

4. The pipeline automatic measuring device according to claim 2, characterized in that: The cross-section of the slide groove (15) and the cross-section of the telescopic block (16) are both rectangular.

5. The pipeline automatic measuring device according to claim 1, characterized in that: An observation hole is provided on the front side wall of the control box (2), and an observation mirror (27) is fixedly installed in the observation hole.

6. The pipeline automatic measuring device according to claim 1, characterized in that: Two fill-in lights (28) are fixedly mounted on the bottom of the mounting plate (8), and the two fill-in lights (28) are symmetrically arranged on both sides of the detection head (1).

7. The pipeline automatic measuring device according to claim 1, characterized in that: The suspension rope (4) is provided with scale marks.

8. The pipeline automatic measuring device according to claim 1, characterized in that: A U-shaped handle is fixedly mounted on the top of the control box (2).

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