Height limit detection radar for mobile lifting platform

Abstract

The invention relates to the related technical field of height limit detection radars, in particular to a movable type lifting platform height limit detection radar which comprises a mounting support, a detection radar body and a protection structure, the mounting support is arranged in an arch shape, and the two ends of the mounting support are fixed to guardrails above a movable type lifting platform through positioning bolts; a mounting plate is integrally formed in the middle of the mounting bracket, and a mounting hole is formed in the mounting plate; the protection structure is formed by combining the fastening seat and the protection seat, the annular air cavity and the air supply hole are formed in the fastening seat, and the receding groove, the main air channel and the dust removal air channel are formed in the protection seat, so that air is supplied through the air pump, and air flow sequentially passes through the annular air cavity, the air supply hole, the receding groove and the main air channel and is blown out of the dust removal air channel; therefore, self-cleaning is formed on the surface of the lens of the detection radar body, the detection accuracy of the detection radar body is guaranteed, and the safety of the movable lifting platform in the operation process is effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field related to height limit detection radars, and in particular to a mobile lifting platform height limit detection radar. Background Art

[0002] Infrared laser radar is a radar system that emits laser beams to detect the position, speed and other characteristic quantities of the target. Its working principle is to transmit a detection signal (ultrasonic wave or laser beam) to the target, and then compare the received signal reflected from the target (target echo) with the transmitted signal. After appropriate processing, the relevant information of the target can be obtained. Ultrasonic radar is based on the transmission and reception of sound waves. High-frequency ultrasonic pulses propagate in the air, and are reflected back after encountering obstacles. The distance of the target object is calculated based on the time difference of the round trip of the sound wave; The existing Chinese patent document with announcement number CN218727964U discloses a railway tunnel radar detection platform, which includes a detection platform body, the detection platform body includes a support plate and a tunnel, a lifting mechanism is installed at the bottom of the support plate, a base is fixed at one end of the lifting mechanism, a moving mechanism is installed at the bottom of the base, movable components are installed at both ends of the support plate, universal wheels are installed on the movable components, a fixed seat is fixed at the top of the support plate, a power mechanism is installed on the fixed seat, and a rotating disk is installed on the power mechanism; However, the signal transmitting end and receiving end of the radar in the above scheme are not provided with a special protective structure, and the working environment of the device is an outdoor or indoor high-dust environment. When dust adheres to the signal transmitting end and the receiving end, it will affect the normal transmission and reception of ultrasonic and laser signals, thereby interfering with the detection of the laser radar, thereby affecting the detection accuracy. For this reason, the present invention proposes a mobile lifting platform height limit detection radar to solve the above problem. Summary of the invention

[0003] The object of the present invention is to provide a mobile lifting platform height limit detection radar to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a mobile lifting platform height limit detection radar, comprising: The mounting bracket is arranged in an arch shape, and both ends of the mounting bracket are fixed to the guardrail above the mobile lifting platform by positioning bolts, and a mounting plate is integrally formed at the middle position of the mounting bracket, a mounting hole is opened on the mounting plate, and a through hole is opened at a position corresponding to the mounting hole on the mounting bracket; A detection radar body, wherein a laser emitting module and a laser receiving module are arranged in a lens on the detection radar body, wherein the laser emitting module and the laser receiving module are both electrically connected to a signal processing module in the detection radar body, and the signal processing module is electrically connected to a control module on a mobile lifting platform through a signal line; The protective structure includes a fastening seat and a protective seat. A threaded seat is integrally formed on the outer wall of the lens. The fastening seat is threadedly connected to the threaded seat. When the fastening seat is actually tightened, the detection radar body is positioned on the mounting plate.

[0005] Preferably, an annular air cavity is provided on the fastening seat, an air supply hole is provided on the inner side wall of the annular air cavity, and an air pipe connector is provided on the outer side wall of the annular air cavity, the air pipe connector is connected to the air outlet port of the air pump on the mobile lifting platform through an air pipe, the air inlet port of the air pump is connected to a dust filter, the protective seat is installed in the inner cavity of the threaded seat, an air avoidance groove is provided on the outer side wall of the protective seat, the air avoidance groove is arranged corresponding to the air supply hole, a main air duct is provided on the side wall of the air avoidance groove, the main air duct is arranged in a circle around the circumference of the air avoidance groove, and the ends of the main air ducts are connected to dust removal air ducts, and the ends of the dust removal air ducts are arranged toward the end face of the lens.

[0006] Preferably, a primary rotating groove and a secondary rotating groove are provided on the inner cavity side wall of the fastening seat, and a primary rotating ring and a secondary rotating ring are integrally formed on the outer side wall of the protective seat, the primary rotating ring and the secondary rotating ring are respectively matched with the primary rotating groove and the secondary rotating groove, and when the protective seat is actually installed, the primary rotating ring and the secondary rotating ring are respectively movably arranged in the primary rotating groove and the secondary rotating groove, and a force-bearing tooth body is integrally formed on the side wall of the air avoidance groove, and the force-bearing tooth body is aligned with the air supply hole.

[0007] Preferably, the stressed tooth body and the air supply hole are arranged in a circle with equal circumference, and the cross-section of the stressed tooth body is an obtuse triangle, the end of the air supply hole is inclined toward the stressed tooth body, and when the air supply hole blows air outward, the gas blown out of the air supply hole exerts a force on the stressed tooth body and drives the protective seat to rotate along the fastening seat, and the number of the stressed tooth bodies is 1.5 times the number of the air supply holes.

[0008] Preferably, there are gaps between the primary rotating ring, the secondary rotating ring and the primary rotating groove, the secondary rotating groove, and when the primary rotating ring and the secondary rotating ring are arranged in the primary rotating groove and the secondary rotating groove, there is no contact between the fastening seat and the protective seat.

[0009] Preferably, the end of the dust removal air duct is inclined, and the inclination angles of the ends of different dust removal air ducts are arranged to increase successively, and when the protective seat rotates, the gas blown out from the ends of all dust removal air ducts completely cleans the surface of the lens.

[0010] Preferably, a first-level air distribution groove is provided at the bottom of the first-level rotating groove, and a second-level air distribution groove is provided at the bottom of the second-level rotating groove. The first-level air distribution groove and the second-level air distribution groove are both arranged in a ring shape, and the first-level air distribution groove is connected with the annular air cavity through the first-level connecting groove, and the second-level air distribution groove is connected with the annular air cavity through the second-level connecting groove. The first-level connecting groove and the second-level connecting groove are both arranged in a circle around the circumference of the annular air cavity.

[0011] Preferably, a blowing air duct is provided at the end of the main air duct.

[0012] Preferably, a dust inlet is provided on the inner side wall of the fastening seat, a dust storage chamber is provided at the root of the dust inlet, the dust inlet and the dust storage chamber are both arranged in a ring shape, a cleaning port is provided at the bottom of the dust storage chamber, and a sealing plate groove is provided on the bottom surface of the fastening seat, a sealing plate is snap-fitted and installed in the sealing plate groove, and the lower side port of the dust inlet is flush with the end face of the threaded seat.

[0013] Preferably, the cross-sections of the dust inlet and the dust storage chamber are both right-angled triangles, and an anti-backflow plate is integrally formed on the side wall of the dust storage chamber. The anti-backflow plate is arranged in a ring shape, and the anti-backflow plates are arranged in pairs, and the cross-sections of the same pair of anti-backflow plates are arranged in an inverted eight-shape.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. A mobile lifting platform height limit detection radar is provided which is composed of a mounting bracket, a detection radar body and a protective structure, and the protective structure is provided which is composed of a fastening seat and a protective seat, and an annular air cavity and an air supply hole are provided on the fastening seat, and an air avoidance groove, a main air duct and a dust removal air duct are provided on the protective seat, so that air is supplied through an air pump to allow the air flow to pass through the annular air cavity, the air supply hole, the air avoidance groove, the main air duct in sequence, and blow out from the dust removal air duct, so that the lens surface of the detection radar body is self-cleaned, thereby ensuring the detection accuracy of the detection radar body, thereby effectively ensuring the safety of the mobile lifting platform during operation; 2. A primary rotating groove and a secondary rotating groove are provided on the fastening seat, a primary rotating ring and a secondary rotating ring are provided on the protective seat, a circle of force-bearing teeth are provided on the side wall of the air avoidance groove, and the end of the air supply hole is tilted toward the force-bearing teeth, so that the gas blown out of the air supply hole exerts a force on the force-bearing teeth to make the protective seat self-rotate, and ensure that the inclination angle of the end of the dust removal air duct is set in a trend of increasing successively, so as to ensure that the gas blown out of the dust removal air duct has a complete cleaning effect on the surface of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a cross-sectional view of the present invention along the main airway; Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 for Figure 3 A magnified schematic diagram of the structure at B in the middle; Figure 5 for Figure 3 A magnified schematic diagram of the structure at C in the middle; Figure 6 A half-section view of the fastening seat of the present invention; Figure 7 for Figure 6 A magnified schematic diagram of the structure at D in the middle; Figure 8 for Figure 6 The enlarged schematic diagram of the structure at E in the middle; Fig. 9 This is a schematic diagram of the structure of the protective seat of the present invention; Fig.10 for Fig. 9 The enlarged schematic diagram of the structure at F in the middle; Fig.11 It is a schematic diagram of the structure of the fastening seat of the present invention; Fig.12 for Fig.11 A magnified schematic diagram of the structure at G in the middle; Fig.13 This is a practical effect diagram of the present invention; Fig.14 for Fig.13 Enlarged schematic diagram of the structure at H in the middle.

[0016] In the figure: mounting bracket 1, detection radar body 2, protective structure 3, mobile lifting platform 4, guardrail 5, mounting plate 6, through hole 7, lens 8, threaded seat 9, fastening seat 10, protective seat 11, signal line 12, annular air cavity 13, air pipe 14, air delivery hole 15, air avoidance groove 16, force-bearing tooth body 17, main air duct 18, blowing air duct 19, primary rotating groove 20, secondary rotating groove 21, primary connecting groove 22, secondary connecting groove 23, primary rotating ring 24, secondary rotating ring 25, primary air distribution groove 26, secondary air distribution groove 27, dust removal air duct 28, dust inlet 29, dust accumulation cavity 30, cleaning port 31, sealing plate groove 32, sealing plate 33, anti-backflow plate 34. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 14 The present invention provides the following three preferred embodiments: Embodiment 1: A mobile lifting platform height limit detection radar, including a mounting bracket 1, a detection radar body 2 and a protective structure 3, the mounting bracket 1 is arranged in an arch shape, and the two ends of the mounting bracket 1 are fixed to the guardrail 5 above the mobile lifting platform 4 by positioning bolts, and a mounting plate 6 is integrally formed at the middle position of the mounting bracket 1, a mounting hole is provided on the mounting plate 6, and a through hole 7 is provided at a position corresponding to the mounting hole on the mounting bracket 1, a laser transmitting module and a laser receiving module are arranged in the lens 8 on the detection radar body 2, the laser transmitting module and the laser receiving module are both electrically connected to the signal processing module in the detection radar body 2, and the signal processing module is electrically connected to the control module on the mobile lifting platform 4 through a signal line 12, the protective structure 3 includes a fastening seat 10 and a protective seat 11, a threaded seat 9 is integrally formed on the outer wall of the lens 8, the fastening seat 10 is threadedly connected to the threaded seat 9, and when the fastening seat 10 is actually tightened, the detection radar body 2 is positioned on the mounting plate 6.

[0019] An annular air cavity 13 is provided on the fastening seat 10, an air supply hole 15 is provided on the inner side wall of the annular air cavity 13, and an air pipe connector is provided on the outer side wall of the annular air cavity 13, the air pipe connector is connected to the air outlet port of the air pump on the mobile lifting platform 4 through the air pipe 14, the air inlet port of the air pump is connected to a dust filter, the protective seat 11 is installed in the inner cavity of the threaded seat 9, an air avoidance groove 16 is provided on the outer side wall of the protective seat 11, the air avoidance groove 16 is arranged corresponding to the air supply hole 15, a main air duct 18 is provided on the side wall of the air avoidance groove 16, the main air duct 18 is arranged in a circle around the circumference of the air avoidance groove 16, and the ends of the main air duct 18 are connected to the dust removal air duct 28, and the ends of the dust removal air duct 28 are arranged toward the end face of the lens 8, through A mobile lifting platform height limit detection radar is provided which is composed of a mounting bracket 1, a detection radar body 2 and a protective structure 3. The protective structure 3 is arranged to be composed of a fastening seat 10 and a protective seat 11, and an annular air cavity 13 and an air supply hole 15 are provided on the fastening seat 10, and an air avoidance groove 16, a main air duct 18 and a dust removal air duct 28 are provided on the protective seat 11. Air is supplied through an air pump to allow the air flow to pass through the annular air cavity 13, the air supply hole 15, the air avoidance groove 16, the main air duct 18 in sequence, and be blown out from the dust removal air duct 28, so as to form a self-cleaning effect on the surface of the lens 8 of the detection radar body 2, thereby ensuring the detection accuracy of the detection radar body 2, thereby effectively ensuring the safety of the mobile lifting platform 4 during operation.

[0020] Embodiment 2: On the basis of embodiment 1, a primary rotating groove 20 and a secondary rotating groove 21 are provided on the inner cavity side wall of the fastening seat 10, and a primary rotating ring 24 and a secondary rotating ring 25 are integrally formed on the outer side wall of the protective seat 11. The primary rotating ring 24 and the secondary rotating ring 25 are respectively matched with the primary rotating groove 20 and the secondary rotating groove 21, and when the protective seat 11 is actually installed, the primary rotating ring 24 and the secondary rotating ring 25 are respectively movably arranged in the primary rotating groove 20 and the secondary rotating groove 21, and a force-bearing tooth body 17 is integrally formed on the side wall of the air avoidance groove 16, and the force-bearing tooth body 17 is aligned with the air supply hole 15.

[0021] The stressed tooth body 17 and the air supply hole 15 are arranged in a circle with equal circumference, and the cross-section of the stressed tooth body 17 is an obtuse triangle. The end of the air supply hole 15 is inclined toward the stressed tooth body 17, and when the air supply hole 15 blows air outward, the gas blown out of the air supply hole 15 exerts a force on the stressed tooth body 17 and drives the protective seat 11 to rotate along the fastening seat 10. The number of the stressed tooth bodies 17 is 1.5 times the number of the air supply holes 15, which can ensure that a part of the stressed tooth bodies 17 are always in a stable stressed state.

[0022] There are gaps between the primary rotating ring 24, the secondary rotating ring 25 and the primary rotating groove 20, the secondary rotating groove 21, and when the primary rotating ring 24, the secondary rotating ring 25 are arranged in the primary rotating groove 20, the secondary rotating groove 21, there is no contact between the fastening seat 10 and the protective seat 11, which can reduce friction and improve the rotation flexibility of the protective seat 11.

[0023] The end of the dust removal air duct 28 is set to be inclined, and the inclination angles of the ends of different dust removal air ducts 28 are set to increase successively, and when the protective seat 11 rotates, the gas blown out from the ends of all dust removal air ducts 28 has a complete cleaning effect on the surface of the lens 8, a primary rotating groove 20 and a secondary rotating groove 21 are opened on the fastening seat 10, and a primary rotating ring 24 and a secondary rotating ring 25 are set on the protective seat 11, and a circle of force-bearing teeth 17 are set on the side wall of the air avoidance groove 16, and the end of the air supply hole 15 is inclined toward the force-bearing tooth body 17, so that the gas blown out of the air supply hole 15 applies a force to the force-bearing tooth body 17, so that the protective seat 11 produces self-rotation, and ensure that the inclination angles of the ends of the dust removal air ducts 28 are set to increase successively, so as to ensure that the gas blown out of the dust removal air ducts 28 has a complete cleaning effect on the surface of the lens 8.

[0024] A first-level air distribution groove 26 is provided at the bottom of the first-level rotating groove 20, and a second-level air distribution groove 27 is provided at the bottom of the second-level rotating groove 21. Both the first-level air distribution groove 26 and the second-level air distribution groove 27 are arranged in a ring shape, and the first-level air distribution groove 26 is connected with the annular air cavity 13 through the first-level connecting groove 22, and the second-level air distribution groove 27 is connected with the annular air cavity 13 through the second-level connecting groove 23. Both the first-level connecting groove 22 and the second-level connecting groove 23 are arranged in a circle around the annular air cavity 13. The arrangement of the first-level air distribution groove 26 and the second-level air distribution groove 27 allows the gaps between the first-level rotating ring 24, the second-level rotating ring 25 and the first-level rotating groove 20, the second-level rotating groove 21 to be better distributed with gas, thereby forming an air lubrication effect, thereby further improving the relative movement flexibility between the protective seat 11 and the fastening seat 10.

[0025] A blowing air channel 19 is provided at the end of the main air channel 18 , and air is blown outward through the blowing air channel 19 , thereby forming a wind wall to reduce dust from entering the position of the lens 8 .

[0026] Embodiment 3: On the basis of embodiment 2, a dust inlet 29 is provided on the inner wall of the fastening seat 10, and a dust storage chamber 30 is provided at the root of the dust inlet 29. The dust inlet 29 and the dust storage chamber 30 are both arranged in a ring shape, and a cleaning port 31 is provided at the bottom of the dust storage chamber 30. A sealing plate groove 32 is provided on the bottom surface of the fastening seat 10, and a sealing plate 33 is snap-fitted and installed in the sealing plate groove 32. The lower side port of the dust inlet 29 is flush with the end face of the threaded seat 9. Through the arrangement of the dust inlet 29 and the dust storage chamber 30, dust can be blown into the dust storage chamber 30 for collection to avoid secondary dust pollution, and it is convenient for the staff to clean the dust in a centralized manner.

[0027] The cross-sections of the dust inlet 29 and the dust storage chamber 30 are both right-angled triangles. An anti-backflow plate 34 is integrally formed on the side wall of the dust storage chamber 30. The anti-backflow plate 34 is arranged in a ring shape, and the anti-backflow plate 34 is arranged in pairs. The cross-section of the same pair of anti-backflow plates 34 is arranged in an inverted eight-shaped shape. The setting of the anti-backflow plate 34 can effectively prevent dust from flowing back, thereby effectively ensuring the protective cleaning effect of the protective structure 3.

[0028] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A mobile lifting platform height limit detection radar, characterized in that: include: A mounting bracket (1), the mounting bracket (1) being arranged in an arch shape, and the two ends of the mounting bracket (1) being fixed to a guardrail (5) above the mobile lifting platform (4) by means of positioning bolts, and a mounting plate (6) being integrally formed at a middle position of the mounting bracket (1), the mounting plate (6) being provided with a mounting hole, and a through hole (7) being provided at a position on the mounting bracket (1) corresponding to the mounting hole; A detection radar body (2), wherein a laser emitting module and a laser receiving module are arranged in a lens (8) on the detection radar body (2), wherein the laser emitting module and the laser receiving module are both electrically connected to a signal processing module in the detection radar body (2), and the signal processing module is electrically connected to a control module on the mobile lifting platform (4) via a signal line (12); A protective structure (3), the protective structure (3) comprising a fastening seat (10) and a protective seat (11), a threaded seat (9) being integrally formed on the outer side wall of the lens (8), the fastening seat (10) being threadedly connected to the threaded seat (9), and when the fastening seat (10) is actually tightened, the detection radar body (2) is positioned on the mounting plate (6).

2. The mobile lifting platform height limit detection radar according to claim 1 is characterized in that: The fastening seat (10) is provided with an annular air cavity (13), an air delivery hole (15) is provided on the inner side wall of the annular air cavity (13), and an air pipe connector is provided on the outer side wall of the annular air cavity (13), the air pipe connector is connected to the air outlet port of the air pump on the mobile lifting platform (4) through the air pipe (14), the air inlet port of the air pump is connected to a dust filter, and the protective seat (11) is installed in the inner cavity of the threaded seat (9) The outer wall of the protective seat (11) is provided with an air avoidance groove (16), the air avoidance groove (16) is arranged corresponding to the air supply hole (15), the side wall of the air avoidance groove (16) is provided with a main air duct (18), the main air duct (18) is arranged in a circle around the circumference of the air avoidance groove (16), and the ends of the main air duct (18) are connected to the dust removal air duct (28), and the ends of the dust removal air duct (28) are arranged toward the end face of the lens (8).

3. The mobile lifting platform height limit detection radar according to claim 2 is characterized in that: A primary rotating groove (20) and a secondary rotating groove (21) are formed on the inner cavity side wall of the fastening seat (10); a primary rotating ring (24) and a secondary rotating ring (25) are integrally formed on the outer side wall of the protective seat (11); the primary rotating ring (24) and the secondary rotating ring (25) are respectively matched with the primary rotating groove (20) and the secondary rotating groove (21); and when the protective seat (11) is actually installed, the primary rotating ring (24) and the secondary rotating ring (25) are respectively movably arranged in the primary rotating groove (20) and the secondary rotating groove (21); a force-bearing tooth body (17) is integrally formed on the side wall of the air avoidance groove (16); and the force-bearing tooth body (17) is arranged to be aligned with the air supply hole (15).

4. The mobile lifting platform height limit detection radar according to claim 3 is characterized by: The stressed tooth body (17) and the air supply hole (15) are arranged in a circle with equal circumference, and the cross-section of the stressed tooth body (17) is an obtuse triangle. The end of the air supply hole (15) is arranged obliquely toward the stressed tooth body (17), and when the air supply hole (15) blows air outward, the gas blown out of the air supply hole (15) exerts a force on the stressed tooth body (17) and drives the protective seat (11) to rotate along the fastening seat (10). The number of the stressed tooth bodies (17) is 1.5 times the number of the air supply holes (15).

5. The mobile lifting platform height limit detection radar according to claim 4 is characterized in that: There are gaps between the primary rotating ring (24), the secondary rotating ring (25) and the primary rotating groove (20), the secondary rotating groove (21); and when the primary rotating ring (24) and the secondary rotating ring (25) are arranged in the primary rotating groove (20) and the secondary rotating groove (21), there is no contact between the fastening seat (10) and the protective seat (11).

6. The mobile lifting platform height limit detection radar according to claim 5, characterized in that: The ends of the dust removal air ducts (28) are arranged to be inclined, and the inclination angles of the ends of different dust removal air ducts (28) are arranged to increase successively, and when the protective seat (11) rotates, the gas blown out from the ends of all the dust removal air ducts (28) completely cleans the surface of the lens (8).

7. The mobile lifting platform height limit detection radar according to claim 6, characterized in that: The first-level rotating groove (20) is provided with a first-level air distribution groove (26) at its bottom, and the second-level rotating groove (21) is provided with a second-level air distribution groove (27) at its bottom. The first-level air distribution groove (26) and the second-level air distribution groove (27) are both arranged in an annular shape, and the first-level air distribution groove (26) is connected to the annular air cavity (13) via the first-level connecting groove (22), and the second-level air distribution groove (27) is connected to the annular air cavity (13) via the second-level connecting groove (23). The first-level connecting groove (22) and the second-level connecting groove (23) are both arranged in a circle around the annular air cavity (13).

8. The mobile lifting platform height limit detection radar according to claim 7, characterized in that: A blowing air channel (19) is provided at the end of the main air channel (18).

9. The mobile lifting platform height limit detection radar according to claim 7, characterized in that: A dust inlet (29) is provided on the inner side wall of the fastening seat (10), a dust storage chamber (30) is provided at the root of the dust inlet (29), the dust inlet (29) and the dust storage chamber (30) are both arranged in an annular shape, a cleaning port (31) is provided at the bottom of the dust storage chamber (30), and a sealing plate groove (32) is provided on the bottom surface of the fastening seat (10), a sealing plate (33) is mounted in the sealing plate groove (32), and a lower side port of the dust inlet (29) is flush with an end surface of the threaded seat (9).

10. The mobile lifting platform height limit detection radar according to claim 9, characterized in that: The cross-sections of the dust inlet (29) and the dust storage chamber (30) are both in the shape of a right triangle, and a backflow prevention plate (34) is integrally formed on the side wall of the dust storage chamber (30); the backflow prevention plate (34) is arranged in a ring shape, and the backflow prevention plates (34) are arranged in pairs, and the cross-sections of the same pair of backflow prevention plates (34) are arranged in an inverted eight-shaped shape.

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