Seamless steel tube comprehensive performance inspection device

Abstract

The invention discloses a seamless steel tube comprehensive performance inspection device, which comprises a machine body, a placement assembly fixedly mounted at the center of the top of the machine body, an inner diameter inspection assembly fixedly mounted at one end of the top of the machine body, an outer diameter inspection assembly engaged with the outer side of the inner diameter inspection assembly, and a transmission assembly mounted at the other end of the top of the machine body, according to the seamless steel pipe comprehensive performance inspection device, various items of seamless steel pipes are inspected, a large amount of manpower does not need to be consumed to separately inspect each item, through the clamping assembly, the seamless steel pipe comprehensive performance inspection device is simple in structure and convenient to operate, and the inspection efficiency is improved. The seamless steel pipe is clamped to rotate, so that the whole circumferential surface of the seamless steel pipe can be uniformly scanned by the scanner without dead angles, the inner diameter of the seamless steel pipe can be accurately inspected through the inner diameter inspection assembly, and the inner diameter and the outer diameter can be measured at the same time through the outer diameter inspection assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of seamless steel pipe inspection, in particular to a comprehensive performance inspection device for seamless steel pipes. Background Art

[0002] Seamless steel pipes, with their excellent mechanical properties, corrosion resistance, and high strength, are widely used in the petroleum, chemical, electric power, construction, and machinery manufacturing industries. For example, they serve as fluid pipelines in the petroleum and chemical industries, boiler and turbine tubes in the electric power industry, reinforcement and steel structures in the construction industry, and shaft sleeves and mechanical components in the machinery manufacturing industry.

[0003] However, the detection methods of existing seamless steel pipe performance testing devices are mostly for testing single items, and the seamless steel pipe needs to be further tested. In addition, the existing seamless steel pipe performance testing devices usually require handheld equipment to test whether the inside and outside of the seamless steel pipe are qualified. This is not efficient and wastes manpower costs.

[0004] Therefore, it is necessary to provide a comprehensive performance testing device for seamless steel pipes. Summary of the Invention

[0005] The purpose of the present invention is to provide a comprehensive performance testing device for seamless steel pipes to solve the problem that the testing methods of the existing seamless steel pipe performance testing devices proposed in the above background technology are mostly for testing a single item, and the seamless steel pipe needs to be further tested. In addition, the existing seamless steel pipe performance testing devices usually require handheld equipment to test whether the inside and outside of the seamless steel pipe are qualified, which is not efficient and wastes labor costs.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a comprehensive performance testing device for seamless steel pipes, comprising a body, wherein legs are fixedly installed at the bottom of the body, a placement assembly for placing seamless steel pipes is fixedly installed at the center of the top of the body, an inner diameter inspection assembly is fixedly installed at one end of the top of the body, an outer diameter inspection assembly is meshedly connected to the outer side of the inner diameter inspection assembly, a transmission assembly is installed at the other end of the top of the body, a clamping assembly is fixedly installed on the top of the transmission assembly, and an outer surface scanning assembly is fixedly installed between the four corners of the top of the body.

[0007] Preferably, a display screen is fixedly mounted on one end of the top of the machine body, a control panel is fixedly mounted on one side of the connection between the display screen and the machine body, and a transmission switch, a rotation switch and a test switch are fixedly mounted on the surface of the control panel.

[0008] Preferably, the placement component includes a fixed plate, the fixed plate is fixedly mounted on the machine body, a lifting platform is fixedly mounted on the top of the fixed plate, and a placement platform is fixedly mounted on the top of the lifting platform.

[0009] Preferably, the surface scanning assembly includes four pillars, which are respectively fixedly mounted on the four corners of the top of the body, a top plate is fixedly mounted on the top between the four pillars, and a scanner is fixedly mounted on the bottom of the top plate. The scanner adopts a non-contact detection method, which avoids direct contact with the surface of the steel pipe and will not cause damage to the surface of the steel pipe, and can efficiently inspect the surface of the seamless steel pipe.

[0010] Preferably, the clamping assembly includes a clamp housing, a bidirectional screw is rotatably installed inside the clamp housing, two second transmission blocks are symmetrically installed on the outside of the bidirectional screw, the second transmission blocks are slidably connected to the inside of the clamp housing, and a clamping claw is fixedly installed on one side of the two second transmission blocks, one end of the bidirectional screw passes through the top of the clamp housing, and a knob is fixedly installed on one end of the clamp housing.

[0011] Preferably, a rotating shaft is fixedly installed on one side of the clamp housing, a first mounting plate is rotatably installed in the middle of the rotating shaft, a rotating motor is fixedly installed at one end of the rotating shaft, and the rotating motor is fixedly installed on the first mounting plate. The rotating motor is electrically connected to an external power supply through a rotating switch, and driving the steel pipe to rotate allows the scanner to evenly scan its entire circumferential surface without leaving any blind spots.

[0012] Preferably, the transmission assembly includes a sliding groove, which is opened at one end of the machine body, and a transmission screw is rotatably installed inside the sliding groove, one end of the transmission screw passes through one end of the machine body, and a first transmission motor is fixedly installed at one end of the transmission screw, and the first transmission motor is fixedly installed on the machine body. The outer side of the transmission screw is connected to the first transmission block, and the first transmission block is slidably installed inside the sliding groove, and the top of the first transmission block is fixedly connected to the bottom of the first mounting plate.

[0013] Preferably, the inner diameter inspection assembly includes a first mounting shell and a second mounting plate, the second mounting plate is fixedly mounted on one end of the top of the body, four first movable grooves are opened at the bottom of the first mounting shell, four first sliding blocks are slidingly mounted inside the first mounting shell, a transmission rack is fixedly mounted on one side of the four first sliding blocks, the transmission rack is in contact with the inner wall of the first mounting shell, a connecting rod is fixedly mounted on the bottom of the first sliding block, the four connecting rods are respectively slidably connected to the four first movable grooves, and an inner support block is fixedly mounted on the top of the four first sliding blocks.

[0014] Preferably, a second transmission motor is fixedly mounted on one side of the second mounting plate, an axis is fixedly mounted on the output end of the second transmission motor, a reducing disk is fixedly mounted on one end of the axis, four arc-shaped grooves are equidistantly provided on the reducing disk, and the four arc-shaped grooves are movably connected to corresponding connecting rods respectively. The second transmission motor is electrically connected to an external power supply through a test switch, and can automatically adjust the degree of tightening according to the inner diameter of the steel pipe, and fit tightly with the inner wall of the steel pipe, so that the inner diameter of the steel pipe can be accurately measured.

[0015] The top of the four sliding blocks is fixedly mounted on the outside of the first mounting shell, and the four sliding blocks are respectively slidably connected to the four second moving grooves. The four second sliding blocks are fixedly mounted on the top of the four sliding blocks, and a distance sensor is fixedly mounted on one side of the second mounting shell. A connecting plate is fixedly mounted on the connecting plate, and the connecting plate is fixedly mounted on the second mounting plate. The inner diameter and outer diameter are measured simultaneously, without the need to measure the two parameters separately, reducing the measurement time and the number of times the steel pipe is loaded and unloaded on the detection equipment, which can significantly improve the detection efficiency and is suitable for the rapid detection needs in large-scale production.

[0016] Compared with the prior art, the present invention has the following beneficial effects: By inspecting seamless steel pipes for multiple items, there is no need to spend a lot of manpower to inspect each item separately; Through the clamping assembly, when the scanner is scanning the surface of the seamless steel pipe, the seamless steel pipe can be rotated to allow the scanner to scan the entire circumference of the pipe evenly without leaving any blind spots; The inner diameter inspection component can accurately inspect the inner diameter of the seamless steel pipe, and the inspection is carried out by laminating, which can reduce the measurement error; The outer diameter inspection component can measure the inner diameter and outer diameter at the same time, eliminating the need to measure the two parameters separately. This reduces measurement time and the number of times the steel pipe is loaded and unloaded on the inspection equipment, significantly improving inspection efficiency and making it suitable for rapid inspection needs in large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the comprehensive performance testing device of the present invention; Figure 2 A diagram of the transmission assembly of the comprehensive performance testing device of the present invention; Figure 3 A diagram of the clamping assembly of the comprehensive performance testing device of the present invention; Figure 4 It is a diagram of the inner diameter inspection component and the outer diameter inspection component of the comprehensive performance inspection device of the present invention; Figure 5 This is a diagram of the inner diameter inspection assembly of the comprehensive performance inspection device of the present invention; Figure 6 A partial view of the inner diameter inspection component of the comprehensive performance inspection device of the present invention; Figure 7 This is a diagram of the outer diameter inspection assembly of the comprehensive performance inspection device of the present invention; Figure 8 This is a cross-sectional view of the outer diameter inspection component of the comprehensive performance inspection device of the present invention.

[0018] Figure: 1. Body; 2. Legs; 3. Fixing plate; 4. Lifting platform; 5. Placement platform; 6. Scanner; 7. Display screen; 8. Control panel; 9. Sliding slot; 10. Drive screw; 11. First drive block; 12. First drive motor; 13. First mounting plate; 14. Rotating motor; 15. Clamp housing; 16. Bidirectional screw; 17. Second drive block; 18. Clamping jaws; 19. Knob; 20. Variable diameter plate; 21. Arc slot ; 22. First mounting shell; 23. First movable groove; 24. First sliding block; 25. Transmission rack; 26. Connecting rod; 27. Inner support block; 28. Distance sensor; 29. Second mounting shell; 30. Second movable groove; 31. Gear; 32. Driven rack; 33. Second sliding block; 34. Outer clamping block; 35. Connecting plate; 36. Support column; 37. Top plate; 38. Second mounting plate; 39. Second transmission motor; 40. Axis. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0020] See also Figure 1-8 The present invention provides a comprehensive performance testing device for seamless steel pipes, comprising a body 1, a support leg 2 fixedly mounted on the bottom of the body 1, a placement assembly for placing seamless steel pipes fixedly mounted on the center of the top of the body 1, an inner diameter inspection assembly fixedly mounted on one end of the top of the body 1, an outer diameter inspection assembly meshingly connected to the outer side of the inner diameter inspection assembly, a transmission assembly mounted on the other end of the top of the body 1, a clamping assembly fixedly mounted on the top of the transmission assembly, and an outer surface scanning assembly fixedly mounted between the four corners of the top of the body 1.

[0021] Furthermore, a display screen 7 is fixedly mounted on one end of the top of the body 1, and a control panel 8 is fixedly mounted on one side of the connection between the display screen 7 and the body 1. A transmission switch, a rotary switch and a test switch are fixedly mounted on the surface of the control panel 8. The device can be controlled by the control panel 8. The first transmission motor 12 can be controlled to work by the transmission switch, the rotary motor 14 can be controlled to work by the rotary switch, and the second transmission motor 39 can be controlled to work by the test switch.

[0022] Furthermore, the placement component includes a fixed plate 3, which is fixedly mounted on the machine body 1, a lifting platform 4 is fixedly mounted on the top of the fixed plate 3, and a placement platform 5 is fixedly mounted on the top of the lifting platform 4.

[0023] Furthermore, the surface scanning assembly includes four pillars 36, which are respectively fixedly mounted on the four corners of the top of the body 1. A top plate 37 is fixedly mounted on the top between the four pillars 36, and a scanner 6 is fixedly mounted on the bottom of the top plate 37. The scanner 6 is used to scan and inspect the surface defects of the seamless steel pipe below. The scanner 6 is electrically connected to an external power supply and is signal-connected to the display screen 7 to display the inspection results through the display screen 7.

[0024] Furthermore, the clamping assembly includes a clamp housing 15, a bidirectional screw rod 16 is rotatably installed inside the clamp housing 15, two second transmission blocks 17 are symmetrically installed on the outside of the bidirectional screw rod 16, the second transmission blocks 17 are slidably connected to the inside of the clamp housing 15, and a clamping claw 18 is fixedly installed on one side of the two second transmission blocks 17. One end of the bidirectional screw rod 16 passes through the top of the clamp housing 15, and a knob 19 is fixedly installed on one end of the clamp housing 15.

[0025] Furthermore, a rotating shaft is fixedly installed on one side of the clamp housing 15, a first mounting plate 13 is rotatably installed in the middle of the rotating shaft, a rotating motor 14 is fixedly installed at one end of the rotating shaft, the rotating motor 14 is fixedly installed on the first mounting plate 13, and the rotating motor 14 is electrically connected to the external power supply through a rotating switch.

[0026] Furthermore, the transmission assembly includes a sliding groove 9, which is opened at one end of the body 1. A transmission screw 10 is rotatably installed inside the sliding groove 9. One end of the transmission screw 10 passes through one end of the body 1. A first transmission motor 12 is fixedly installed at one end of the transmission screw 10. The first transmission motor 12 is fixedly installed on the body 1. The outer side of the transmission screw 10 is connected to the first transmission block 11. The first transmission block 11 is slidably installed inside the sliding groove 9. The top of the first transmission block 11 is fixedly connected to the bottom of the first mounting plate 13.

[0027] Furthermore, the inner diameter inspection assembly includes a first mounting shell 22 and a second mounting plate 38. The second mounting plate 38 is fixedly mounted at one end of the top of the body 1. Four first movable grooves 23 are provided at the bottom of the first mounting shell 22. Four first sliding blocks 24 are slidingly mounted inside the first mounting shell 22. A transmission rack 25 is fixedly mounted on one side of the four first sliding blocks 24. The transmission rack 25 is in contact with and connected to the inner wall of the first mounting shell 22. A connecting rod 26 is fixedly mounted on the bottom of the first sliding block 24. The four connecting rods 26 are respectively slidably connected to the four first movable grooves 23. The tops of the four first sliding blocks 24 are fixedly mounted with inner support blocks 27.

[0028] Furthermore, a second transmission motor 39 is fixedly mounted on one side of the second mounting plate 38, an axis 40 is fixedly mounted on the output end of the second transmission motor 39, a reducing disk 20 is fixedly mounted on one end of the axis 40, and four arc-shaped grooves 21 are equidistantly provided on the reducing disk 20, and the four arc-shaped grooves 21 are movably connected to corresponding connecting rods 26 respectively, and the second transmission motor 39 is electrically connected to the external power supply through the inspection switch.

[0029] Furthermore, the outer diameter inspection component includes a second mounting shell 29, which is fixedly mounted on the outside of the first mounting shell 22. Four second movable grooves 30 are provided on the top of the second mounting shell 29. The four transmission racks 25 are all slidably connected to the second mounting shell 29. The outer sides of the four transmission racks 25 are all meshed with gears 31. The four gears 31 are all rotatably mounted inside the second mounting shell 29. The outer side of the second mounting shell 29 is meshed with a driven rack 32. The driven rack 32 is slidably mounted inside the second mounting shell 29. One end of the driven rack 32 is fixedly mounted with a second sliding block. 33. The four second sliding blocks 33 are respectively slidably connected to the four second moving grooves 30. The tops of the four second sliding blocks 33 are fixedly installed with external clamping blocks 34. A distance sensor 28 is fixedly installed on one of the external clamping blocks 34 and the inner support block 27. A connecting plate 35 is fixedly installed on one side of the second mounting shell 29. The connecting plate 35 is fixedly installed on the second mounting plate 38. The distance sensor 28 is connected to an external power supply for power supply and is connected to the display screen 7 for signal transmission. The tested inner diameter and outer diameter signals are transmitted to the display screen 7, which are displayed on the display screen 7 for easy viewing.

[0030] When the embodiment of the present application is in use: the same batch of seamless steel pipes on the production line are inspected by the device, and the staff places the seamless steel pipes to be inspected inside the placement table 5, and then makes the lifting platform 4 work. The lifting platform 4 is manual and is manually driven to rise and fall, driving the seamless steel pipes on the placement table 5 to rise and stop after reaching the set specified height. Then, the first transmission motor 12 is controlled by the transmission switch to drive the transmission screw 10 at the output end to rotate, and the transmission screw 10 drives the first transmission block 11 to move inside the sliding groove 9, and the first transmission block 11 drives the first mounting plate 13 on the top to move, and the first mounting plate 13 drives the two clamping claws 1 8 moves in the direction of the seamless steel pipe, and then twists the knob 19 to drive the bidirectional screw rod 16 to rotate, and the bidirectional screw rod 16 drives the two second transmission blocks 17 to move symmetrically inside the clamp housing 15, and the two second transmission blocks 17 drive the two clamping claws 18 to clamp and fix one end of the seamless steel pipe, and then continue to control the first transmission motor 12 through the transmission switch to make the first mounting plate 13 drive the two clamping claws 18 to continue to move forward, pushing the seamless steel pipe to move to the second mounting plate 38 for inspection of the inner diameter and outer diameter. The second mounting plate 38 is on the same horizontal line as the first mounting plate 13 and the equipment installed on it is also horizontally corresponding when inspecting the seamless steel pipe, so the seamless steel pipe is pushed to the second mounting plate When the plate 38 moves, the seamless steel pipe is just between the outer clamping block 34 and the inner support block 27, and then the second transmission motor 39 is started by the inspection switch, and the diameter reducing disk 20 is driven to rotate through the shaft 40 at the output end. When the diameter reducing disk 20 rotates, it drives the connecting rod 26 inside the arc groove 21 to move. When the connecting rod 26 moves, it drives the four first sliding blocks 24 to move inside the first mounting shell 22. The first sliding block 24 drives the top inner support block 27 to fit the inner wall of the seamless steel pipe. When the first sliding block 24 moves, it drives the transmission rack 25 on one side to move, and the transmission rack 25 engages the gear 31 to rotate, and the gear 31 engages the driven rack 32 on the other side with the transmission gear. The bars 25 move in opposite directions, and the driven rack 32 drives the second sliding block 33 at the top to move inside the second moving groove 30. The second sliding block 33 drives the outer clamping block 34 at the top to fit the outer wall of the seamless steel pipe at the same time, and then the inner and outer diameters are inspected and measured by two distance sensors 28. Then, the rotating motor 14 is started by turning the switch to drive the clamp housing 15 fixedly installed on the rotating shaft to rotate. The clamp housing 15 drives the two clamping claws 18 and the fixedly clamped seamless steel pipe to rotate, and then the scanner 6 is used to scan and inspect the surface defects of the seamless steel pipe below. Then, the scanner 6 and the distance sensor 28 transmit the inspection structure signal to the display screen 7 for the convenience of the staff to view.

[0031] All components are universal standard parts or components known to those skilled in the art. Their structures and principles can be known to those skilled in the art through technical manuals or conventional test methods. All the electrical components mentioned above should refer to the above working principles, and the electrical connections between the electrical components are completed in the order of working. The detailed connection methods are well known in the art.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A comprehensive performance testing device for seamless steel pipes, comprising a body (1), characterized in that: The bottom of the body (1) is fixedly mounted with a support leg (2), the center of the top of the body (1) is fixedly mounted with a placement assembly for placing seamless steel pipes, one end of the top of the body (1) is fixedly mounted with an inner diameter inspection assembly, the outer side of the inner diameter inspection assembly is meshedly connected with an outer diameter inspection assembly, the other end of the top of the body (1) is mounted with a transmission assembly, the top of the transmission assembly is fixedly mounted with a clamping assembly, and the four corners of the top of the body (1) are fixedly mounted with an outer surface scanning assembly.

2. A comprehensive performance testing device for seamless steel pipes according to claim 1, characterized in that: A display screen (7) is fixedly mounted on one end of the top of the machine body (1), a control panel (8) is fixedly mounted on one side of the connection between the display screen (7) and the machine body (1), and a transmission switch, a rotation switch, and a test switch are fixedly mounted on the surface of the control panel (8).

3. The comprehensive performance testing device for seamless steel pipes according to claim 1, characterized in that: The placement assembly comprises a fixed plate (3), the fixed plate (3) is fixedly mounted on the machine body (1), a lifting platform (4) is fixedly mounted on the top of the fixed plate (3), and a placement platform (5) is fixedly mounted on the top of the lifting platform (4).

4. The comprehensive performance testing device for seamless steel pipes according to claim 1, characterized in that: The surface scanning assembly includes four pillars (36), the four pillars (36) are fixedly mounted on the four corners of the top of the body (1), a top plate (37) is fixedly mounted on the top between the four pillars (36), and a scanner (6) is fixedly mounted on the bottom of the top plate (37).

5. The comprehensive performance testing device for seamless steel pipes according to claim 1, characterized in that: The clamping assembly includes a clamp housing (15), a bidirectional screw rod (16) is rotatably installed inside the clamp housing (15), two second transmission blocks (17) are symmetrically installed on the outside of the bidirectional screw rod (16), the second transmission blocks (17) are slidably connected to the inside of the clamp housing (15), and a clamping claw (18) is fixedly installed on one side of the two second transmission blocks (17), one end of the bidirectional screw rod (16) passes through the top of the clamp housing (15), and a knob (19) is fixedly installed on one end of the clamp housing (15).

6. The comprehensive performance testing device for seamless steel pipes according to claim 5, characterized in that: A rotating shaft is fixedly mounted on one side of the clamp housing (15), a first mounting plate (13) is rotatably mounted on the middle of the rotating shaft, a rotating motor (14) is fixedly mounted on one end of the rotating shaft, the rotating motor (14) is fixedly mounted on the first mounting plate (13), and the rotating motor (14) is electrically connected to an external power supply via a rotary switch.

7. The comprehensive performance testing device for seamless steel pipes according to claim 6, characterized in that: The transmission assembly includes a sliding groove (9), the sliding groove (9) is opened at one end of the body (1), a transmission screw (10) is rotatably installed inside the sliding groove (9), one end of the transmission screw (10) passes through one end of the body (1), a first transmission motor (12) is fixedly installed at one end of the transmission screw (10), the first transmission motor (12) is fixedly installed on the body (1), the outer side of the transmission screw (10) is transmission-connected with a first transmission block (11), the first transmission block (11) is slidably installed inside the sliding groove (9), and the top of the first transmission block (11) is fixedly connected to the bottom of the first mounting plate (13).

8. The comprehensive performance testing device for seamless steel pipes according to claim 1, characterized in that: The inner diameter inspection component includes a first mounting shell (22) and a second mounting plate (38), the second mounting plate (38) is fixedly mounted on one end of the top of the body (1), four first movable grooves (23) are opened at the bottom of the first mounting shell (22), four first sliding blocks (24) are slidably mounted inside the first mounting shell (22), a transmission rack (25) is fixedly mounted on one side of the four first sliding blocks (24), the transmission rack (25) is in contact with the inner wall of the first mounting shell (22), a connecting rod (26) is fixedly mounted on the bottom of the first sliding block (24), the four connecting rods (26) are respectively slidably connected to the four first movable grooves (23), and an inner support block (27) is fixedly mounted on the top of the four first sliding blocks (24).

9. The comprehensive performance testing device for seamless steel pipes according to claim 8, characterized in that: A second transmission motor (39) is fixedly mounted on one side of the second mounting plate (38), a shaft (40) is fixedly mounted on the output end of the second transmission motor (39), a reducing disk (20) is fixedly mounted on one end of the shaft (40), four arc-shaped slots (21) are equidistantly provided on the reducing disk (20), the four arc-shaped slots (21) are movably connected to corresponding connecting rods (26), and the second transmission motor (39) is electrically connected to an external power supply via a test switch.

10. The comprehensive performance testing device for seamless steel pipes according to claim 8, characterized in that: The outer diameter inspection assembly includes a second mounting shell (29), the second mounting shell (29) is fixedly mounted on the outside of the first mounting shell (22), four second movable grooves (30) are opened on the top of the second mounting shell (29), the four transmission racks (25) are slidably connected to the second mounting shell (29), the outer sides of the four transmission racks (25) are meshed with gears (31), the four gears (31) are rotatably mounted inside the second mounting shell (29), the outer side of the second mounting shell (29) is meshed with a driven rack (32), the driven rack (32 ) is slidably mounted inside the second mounting shell (29), a second sliding block (33) is fixedly mounted on one end of the driven rack (32), four second sliding blocks (33) are slidably connected to four second movable grooves (30) respectively, and an outer clamping block (34) is fixedly mounted on the top of the four second sliding blocks (33), one of the outer clamping blocks (34) and the inner support block (27) is fixedly mounted with a distance sensor (28), a connecting plate (35) is fixedly mounted on one side of the second mounting shell (29), and the connecting plate (35) is fixedly mounted on the second mounting plate (38).

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