Height limiter with buffering and anti-collision functions

Abstract

The invention discloses a height limiting stopper with buffering and anti-collision functions, and relates to the technical field of height limiting stoppers, the height limiting stopper comprises a base, a mounting box, a fixing seat, a mounting mechanism and a speed reducing mechanism, the mounting box is internally provided with a limiting stopper body, and the limiting stopper body is provided with an input shaft; a first bevel gear is fixedly mounted outside the input shaft and located outside the mounting box, the first bevel gear is meshed with a second bevel gear, a rotating shaft is fixedly connected to the interior of the second bevel gear, and a limiting gear is fixedly mounted at the end, away from the second bevel gear, of the rotating shaft; and the ends, away from the limiting stopper body, of the damping rods penetrate through the mounting box and are fixedly connected with rubber cushion plates, when the device makes contact with the top, the rubber cushion plates can achieve the preliminary buffering and damping effect on the device, then the damping rods are compressed, and the buffering and damping effect can be further achieved.

Description

Technical Field

[0001] The invention relates to the technical field of height limiters, and in particular to a height limiter with buffering and anti-collision functions. Background Art

[0002] At present, tower cranes are very commonly used lifting equipment on construction sites. The lifting height of the crane is generally high. When the height of the crane's rising structure is too high, the wire rope may break, which may cause the hook or the hoisted object to fall, causing losses to the people and objects below, and causing safety hazards. In order to avoid such accidents, people have invented a height limiter. The height limiter can be used to prevent the tower crane from rising too high due to human operating errors and damaging the crane's boom structure, causing the lifting wire rope to break and fall, and the wire rope on the drum to completely loosen or even wrap around the drum in the opposite direction, thereby improving the safety of the equipment.

[0003] After searching, the utility model patent with Chinese patent number CN217234263U discloses a height limiter with a buffer structure, including a height limiter body and a push switch, the bottom of the height limiter body is connected to the inner bottom of the protective seat through a buffer spring, and the top of the height limiter body contacts the inner top of the protective cover through a rubber column, and the protective cover is connected to the protective seat through a telescopic guide column, the push switch is arranged on the top of the protective cover, and the top of the protective cover is provided with a protective groove; compared with the prior art, the utility model patent with Chinese patent number CN217234263U can deform and shrink when the protective cover, i.e., the device, touches the top through the buffer spring, the rubber column and the telescopic guide column, thereby playing a certain buffering role, thereby facilitating the reduction of the impact of the collision on the device and extending the service life of the device, and when the device touches the top, the push switch will be pressed and activated, so that the speaker can make a sound to warn the staff, thereby facilitating the staff to quickly deal with the situation.

[0004] However, in actual use, it is difficult for the above device to automatically realize the intelligent closing of the hook when the device touches the top. If the staff has not enough time to close the crane before the speaker sounds, the device will collide. In addition, the device does not use a reducer during the lifting process, and may encounter insufficient torque during the lifting process. Therefore, a height limiter with a buffer and anti-collision function is required. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the height limiter in the above-mentioned technology is difficult to automatically realize the intelligent closing of the hook when the device touches the top. If the staff has not closed the crane in time before the speaker sounds, the device will collide. In addition, the device does not use a reducer during the lifting process, and may encounter the disadvantage of insufficient torque during the lifting process. A height limiter with buffering and anti-collision function is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A height limiter with a buffering and anti-collision function comprises a base, an installation box, a fixing seat, a mounting mechanism and a speed reduction mechanism, wherein a limiter body is installed inside the installation box, an input shaft is installed on the limiter body, the input shaft passes through the installation box, a first bevel gear is fixedly installed outside the input shaft and outside the installation box, the first bevel gear is meshed with a second bevel gear, a rotating shaft is fixedly connected inside the second bevel gear, a limiting gear is fixedly installed on one end of the rotating shaft away from the second bevel gear, a damping rod is fixedly connected to the top of the limiter body, one end of the damping rod away from the limiter body passes through the installation box and is fixedly connected to a rubber pad, a first tube body is installed at the bottom of the rubber pad, the other end of the first tube body passes through the installation box and is slidably provided with a second tube body, one end of the second tube body away from the first tube body is fixedly connected to the limiter body, a limiting mechanism is installed outside the first tube body, when the device touches the top, the rubber pad can play a preliminary buffering and shock absorbing role for the device, and then the damping rod is compressed, which can further play a buffering and shock absorbing role.

[0008] The above technical scheme further includes: a cylindrical support is installed at the bottom of the installation box, and two mounting ears are symmetrically installed on the outer wall of the cylindrical support, and the installation mechanism includes a circular groove opened on the surface of the base for the cylindrical support to be inserted and snapped in, and two positioning grooves are opened on the surface of the circular groove and directly below the two mounting ears, and a telescopic spring is fixedly connected to the bottom inner wall of the positioning groove, and a buffer block is fixedly installed on the other end of the telescopic spring, and an annular limiting groove for the mounting ear to rotate is opened on the side wall of the circular groove, and a buffer pad is installed on the top side wall of the annular limiting groove; the cylindrical support at the bottom of the installation box is snapped and inserted into the circular groove so that the two mounting ears are respectively aligned with the upper parts of the two positioning grooves. During the installation of the installation box, the buffer block is squeezed, driving the telescopic spring to compress until the top of the buffer block is flush with the inner wall of the bottom of the circular groove, and then the installation box is rotated so that the two mounting ears enter the annular limiting groove, the telescopic spring is released, the buffer block returns to the initial position, and fits with the bottom of the installation box, the tops of the two mounting ears fit with the buffer pad, and the bottoms fit with the bottom of the circular groove.

[0009] The reduction mechanism comprises a reduction box fixedly connected to the top of a fixed seat, a driving motor is fixedly installed inside the reduction box, an output end of the driving motor is fixedly connected to a first cross bar, a first gear is fixedly installed outside the first cross bar, a second gear is meshed outside the first gear, a second cross bar is fixedly connected inside the second gear, a third gear is fixedly installed at one end of the second cross bar, a fourth gear is meshed outside the third gear, and a third cross bar is fixedly installed inside the fourth gear; an end of the second cross bar away from the third gear is rotatably connected to the inner wall of the reduction box, one end of the third cross bar extends to the outside of the reduction box and is fixedly connected to an output shaft, an end of the third cross bar located inside the reduction box is rotatably connected to the inner wall of the reduction box, the size of the first gear is smaller than the second gear, and the size of the third gear is smaller than the fourth gear; through multi-stage gear transmission, the mechanical deceleration effect can be greatly increased, the torque effect can be increased, thereby achieving high torque and low speed of the output shaft.

[0010] The outside of the input shaft and the output shaft are jointly sleeved with a belt, and anti-deflection plates are installed outside the input shaft and the output shaft and on both sides of the belt, so as to ensure that the belt will not deviate when moving.

[0011] The limiting mechanism includes a right-angled trapezoidal block fixedly mounted on the outside of the first tube body, a support seat fixedly mounted on the top of the limiter body, an adjusting rod slidably connected to the top of the support seat, one end of the adjusting rod is set to an inclined surface, and fits with the inclined surface of the right-angled trapezoidal block, and the end of the adjusting rod away from the right-angled trapezoidal block extends to the outside of the installation box and is fixed with a gear block. When the device touches the top, the rubber pad on the top is subjected to pressure, driving the first tube body to slide into the inside of the second tube body, the sliding of the first tube body drives the right-angled trapezoidal block to slide, and the sliding of the right-angled trapezoidal block drives the adjusting rod to slide on the support seat until the gear block at the end of the adjusting rod is stuck in the gap of the limiting gear, and the limiting gear stops moving.

[0012] Detection radars are installed on two side walls of the installation box; when the detection radar detects that the device is about to touch the top, a sound is generated to alert the staff.

[0013] A protrusion is rotatably connected to the outside of the rotating shaft and located between the second bevel gear and the limit gear. The protrusion is fixedly installed on the outside of the installation box; the protrusion serves as a support for the movement of the rotating shaft to improve the stability of the rotating shaft during movement.

[0014] Two connecting ears are symmetrically provided on both sides of the bottom of the fixing seat, and connecting holes are provided on the surfaces of the connecting ears. Bolts are connected to the inner threads of the connecting holes. The fixing seat and the base are threadedly connected by bolts to realize the detachable connection between the reduction box and the base.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, the cylindrical support at the bottom of the installation box is inserted into the circular groove so that the two installation ears are respectively aligned with the upper parts of the two positioning grooves. During the installation of the installation box, the buffer block is squeezed, driving the telescopic spring to compress until the top of the buffer block is flush with the inner wall of the bottom of the circular groove, and then the installation box is rotated at a small angle so that the two installation ears enter the annular limit groove, the telescopic spring is released, the buffer block returns to the initial position, and fits with the bottom of the installation box, the tops of the two installation ears fit with the buffer block, and the bottoms fit with the bottom of the circular groove, thereby realizing a detachable connection between the installation box and the base. In addition, a stable shock-absorbing effect can be achieved between the base and the installation box through the telescopic spring, the buffer block and the buffer pad.

[0017] 2. In the present invention, the driving motor is started, the size of the first gear is smaller than the second gear, and the size of the third gear is smaller than the fourth gear. Through the multi-stage gear transmission of the reduction box, the mechanical deceleration effect can be greatly increased, and the torque effect can be increased. The end of the third cross bar is provided with an output shaft, thereby achieving high torque and low speed of the output shaft, which is convenient for lifting operations.

[0018] 3. In the present invention, when the device touches the top, the rubber pad on the top is subjected to pressure, and the rubber pad can play a preliminary buffering and shock-absorbing role for the device. After that, the damping rod is compressed, which can further play a buffering and shock-absorbing role. When the damping rod is compressed and drives the rubber pad to move downward, it drives the first tube body to slide into the inside of the second tube body. The sliding of the first tube body drives the right-angled trapezoidal block to slide. The sliding of the right-angled trapezoidal block drives the adjusting rod to slide on the supporting seat until the tooth block at the end of the adjusting rod is stuck in the gap of the limiting gear, and the limiting gear stops moving, thereby the rotating shaft stops rotating, the second bevel gear and the first bevel gear stop rotating, and the input shaft stops rotating, which can automatically realize the intelligent closing of the hook. When the input shaft stops rotating, the belt slips, and the output shaft continues to rotate, which can play a certain protective role for the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the first overall structure of a height limiter with a buffering and anti-collision function proposed by the present invention;

[0020] Figure 2 It is a second overall structural schematic diagram of the present invention;

[0021] Figure 3 It is a schematic diagram of a first partial cross-sectional structure of the present invention;

[0022] Figure 4 It is a schematic diagram of a second partial cross-sectional structure of the present invention;

[0023] Figure 5 It is a schematic diagram of a third partial cross-sectional structure of the present invention;

[0024] Figure 6 It is a schematic diagram of a fourth partial cross-sectional structure of the present invention;

[0025] Figure 7 for Figure 1 A schematic diagram of the structure enlargement in the middle;

[0026] Figure 8 for Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0027] Fig. 9 for Figure 6 Enlarged schematic diagram of the structure at point C in the middle.

[0028] In the figure: 1, base; 2, installation box; 3, fixed seat; 4, limiter body; 5, input shaft; 6, first bevel gear; 7, second bevel gear; 8, rotating shaft; 9, limit gear; 10, damping rod; 11, rubber pad; 12, first tube body; 13, second tube body; 14, mounting ear; 15, circular groove; 16, positioning groove; 17, telescopic spring; 18, buffer block; 19, annular limit groove; 20, reduction box; 21, driving motor; 2 2. First cross bar; 23. First gear; 24. Second gear; 25. Second cross bar; 26. Third gear; 27. Fourth gear; 28. Third cross bar; 29. ​​Right-angle trapezoidal block; 30. Support seat; 31. Adjustment rod; 32. Tooth block; 33. Detection radar; 34. Bump; 35. Connecting ear; 36. Connecting hole; 37. Bolt; 38. Output shaft; 39. Belt; 40. Anti-deflection plate; 41. Cylindrical support; 42. Buffer pad. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] Embodiment 1

[0031] like Figure 1-9 As shown, a height limiter with buffering and anti-collision functions proposed by the present invention includes a base 1, an installation box 2, a fixing seat 3, a mounting mechanism and a speed reduction mechanism. A cylindrical support 41 is installed at the bottom of the installation box 2, and two mounting ears 14 are symmetrically installed on the outer wall of the cylindrical support 41. The mounting mechanism includes a circular groove 15 opened on the surface of the base 1 for the cylindrical support 41 to be snapped into and inserted, and two positioning grooves 16 are opened on the surface of the circular groove 15 and located directly below the two mounting ears 14. A telescopic spring 17 is fixedly connected to the bottom inner wall of the positioning groove 16, and a buffer block 18 is fixedly installed on the other end of the telescopic spring 17. An annular limiting groove 19 for the mounting ear 14 to rotate is opened on the side wall of the circular groove 15, and a buffer pad 42 is installed on the top side wall of the annular limiting groove 19.

[0032] Two connecting ears 35 are symmetrically provided on both sides of the bottom of the fixing base 3 . A connecting hole 36 is provided on the surface of the connecting ear 35 . A bolt 37 is threadedly connected inside the connecting hole 36 .

[0033] The working principle of a height limiter with a buffer and anti-collision function based on the first embodiment is that the fixing seat 3 and the base 1 are threadedly connected by bolts 37 to realize the detachable connection between the reduction box 20 and the base 1, and the cylindrical support 41 at the bottom of the installation box 2 is inserted into the circular groove 15, and the two mounting ears 14 are respectively aligned with the upper part of the two positioning grooves 16. During the installation of the installation box 2, the buffer block 18 is squeezed by the mounting ear 14, driving the telescopic spring 17 to compress until the top of the buffer block 18 is flush with the inner wall of the bottom of the circular groove 15. The mounting box 2 is leveled, and then the mounting box 2 is rotated at a small angle so that the two mounting ears 14 rotate into the annular limiting groove 19, the telescopic spring 17 is released, the buffer block 18 returns to the initial position and fits with the bottom of the mounting box 2, the tops of the two mounting ears 14 fit with the buffer block 18, and the bottoms fit with the bottom of the circular groove 15, thereby realizing a detachable connection between the mounting box 2 and the base 1. When the mounting box 2 is impacted by the outside world, the telescopic spring 17, the buffer block 18 and the buffer pad 42 can achieve a stable shock-absorbing effect between the base 1 and the mounting box 2.

[0034] Embodiment 2

[0035] like Figure 1-9 As shown, based on the first embodiment, the reduction mechanism includes a reduction box 20 fixedly connected to the top of the fixed seat 3, a driving motor 21 is fixedly installed inside the reduction box 20, a first cross bar 22 is fixedly connected to the output end of the driving motor 21, a first gear 23 is fixedly installed outside the first cross bar 22, a second gear 24 is meshed on the outside of the first gear 23, a second cross bar 25 is fixedly connected inside the second gear 24, a third gear 26 is fixedly installed at one end of the second cross bar 25, a fourth gear 27 is meshed on the outside of the third gear 26, and a third cross bar 28 is fixedly installed inside the fourth gear 27.

[0036] One end of the second cross bar 25 away from the third gear 26 is rotatably connected to the inner wall of the reduction box 20, one end of the third cross bar 28 extends to the outside of the reduction box 20 and is fixedly connected to the output shaft 38, and one end of the third cross bar 28 located inside the reduction box 20 is rotatably connected to the inner wall of the reduction box 20. The size of the first gear 23 is smaller than that of the second gear 24, and the size of the third gear 26 is smaller than that of the fourth gear 27.

[0037] The outside of the input shaft 5 and the output shaft 38 are both covered with a belt 39 , and anti-deflection plates 40 are installed on the outside of the input shaft 5 and the output shaft 38 and on both sides of the belt 39 .

[0038] In this embodiment, the design is such that when the drive motor 21 is started, the first cross bar 22 rotates, driving the external first gear 23 to rotate, and the first gear 23 drives the second gear 24 meshing therewith to rotate. The size of the first gear 23 is smaller than the size of the second gear 24, which can initially increase the mechanical deceleration effect and increase the torque effect. The second gear 24 rotates to drive the second cross bar 25 and the third gear 26 to rotate, and the third gear 26 drives the fourth gear 27 meshing therewith to rotate. Since the size of the third gear 26 is smaller than the fourth gear 27, the mechanical deceleration effect can be further increased and the torque can be increased. An output shaft 38 is provided at the end of the third cross bar 28, so as to realize high torque and low speed of the output shaft 38. The output shaft 38 drives the input shaft 5 to rotate through the belt 39, which is convenient for lifting operations. The belt 39 can be sleeved on the outside of the output shaft 38 and the input shaft 5 after the installation box 2 and the reduction box 20 are connected to the base 1. The anti-deflection plate 40 ensures that the belt 39 will not deviate during movement.

[0039] Embodiment 3

[0040] like Figure 1-9 As shown, based on the above-mentioned embodiment 1 or 2, a limiter body 4 is installed inside the installation box 2, an input shaft 5 is installed on the limiter body 4, the input shaft 5 passes through the installation box 2, a first bevel gear 6 is fixedly installed outside the input shaft 5 and outside the installation box 2, the first bevel gear 6 is meshed with a second bevel gear 7, a rotating shaft 8 is fixedly connected inside the second bevel gear 7, a limit gear 9 is fixedly installed on one end of the rotating shaft 8 away from the second bevel gear 7, a damping rod 10 is fixedly connected to the top of the limiter body 4, and the damping rod 10 passes through the end of the damping rod 10 away from the limiter body 4. The mounting box 2 is fixedly connected with a rubber pad 11, a first tube body 12 is installed at the bottom of the rubber pad 11, the other end of the first tube body 12 passes through the mounting box 2 and is slidably provided with a second tube body 13, one end of the second tube body 13 away from the first tube body 12 is fixedly connected to the limiter body 4, and a limiting mechanism is installed outside the first tube body 12; detection radars 33 are installed on two side walls of the mounting box 2; a protrusion 34 is rotatably connected to the outside of the rotating shaft 8 and is located between the second bevel gear 7 and the limiting gear 9, and the protrusion 34 is fixedly installed on the outside of the mounting box 2.

[0041] The limiting mechanism includes a right-angled trapezoidal block 29 fixedly mounted on the outside of the first tube body 12, a support seat 30 fixedly mounted on the top of the limiter body 4, an adjusting rod 31 slidably connected to the top of the support seat 30, one end of the adjusting rod 31 is set as an inclined surface, and fits with the inclined surface of the right-angled trapezoidal block 29, and the end of the adjusting rod 31 away from the right-angled trapezoidal block 29 extends to the outside of the mounting box 2 and is fixed with a tooth block 32.

[0042] In this embodiment, the internal components of the reduction box 20 work in coordination with the crane. When the device is about to touch the top, the detection radar 33 detects that the device is about to touch the top and makes a sound, prompting the staff to pay attention. When the device touches the top, the rubber pad 11 on the top is subjected to pressure, and the rubber pad 11 can play a preliminary buffering and shock absorbing role for the device. After that, the damping rod 10 is compressed, which can further play a buffering and shock absorbing role. When the damping rod 10 is compressed and drives the rubber pad 11 to move downward, it drives the first tube body 12 to slide into the second tube body 13, and the sliding of the first tube body 12 drives the right-angle trapezoidal block 29 slides, and the sliding of the right-angled trapezoidal block 29 drives the adjusting rod 31 to slide on the supporting seat 30 until the tooth block 32 at the end of the adjusting rod 31 is stuck in the gap of the limiting gear 9, and the limiting gear 9 stops moving, so that the rotating shaft 8 fixedly connected to the limiting gear 9 stops rotating, the second bevel gear 7 outside the rotating shaft 8 stops rotating, and the first bevel gear 6 meshing with the second bevel gear 7 stops rotating, so that the input shaft 5 stops rotating, and the intelligent closing of the hook can be automatically realized. When the input shaft 5 stops rotating, the belt 39 slips, and the output shaft 38 continues to rotate, which can play a certain protective role on the device.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A height limiter with a buffer and anti-collision function, comprising a base (1), a mounting box (2), a fixing seat (3), a mounting mechanism and a speed reduction mechanism, characterized in that: A limiter body (4) is installed inside the installation box (2), an input shaft (5) is installed on the limiter body (4), the input shaft (5) passes through the installation box (2), a first bevel gear (6) is fixedly installed outside the input shaft (5) and located outside the installation box (2), the first bevel gear (6) is meshed with a second bevel gear (7), a rotating shaft (8) is fixedly connected inside the second bevel gear (7), a limiter gear (9) is fixedly installed on one end of the rotating shaft (8) away from the second bevel gear (7), and the limiter A damping rod (10) is fixedly connected to the top of the body (4); one end of the damping rod (10) away from the limiter body (4) passes through the installation box (2) and is fixedly connected to a rubber pad (11); a first tube body (12) is installed at the bottom of the rubber pad (11); the other end of the first tube body (12) passes through the installation box (2) and is slidably provided with a second tube body (13); one end of the second tube body (13) away from the first tube body (12) is fixedly connected to the limiter body (4); and a limiting mechanism is installed outside the first tube body (12).

2. A height limiter with buffering and anti-collision function according to claim 1, characterized in that: A cylindrical support (41) is installed at the bottom of the installation box (2), and two installation ears (14) are symmetrically installed on the outer wall of the cylindrical support (41). The installation mechanism includes a circular groove (15) opened on the surface of the base (1) for the cylindrical support (41) to be inserted and snapped into, and two positioning grooves (16) are opened on the surface of the circular groove (15) and located directly below the two installation ears (14). A telescopic spring (17) is fixedly connected to the bottom inner wall of the positioning groove (16), and a buffer block (18) is fixedly installed on the other end of the telescopic spring (17). An annular limiting groove (19) for the installation ear (14) to rotate is opened on the side wall of the circular groove (15), and a buffer pad (42) is installed on the top side wall of the annular limiting groove (19).

3. The height limiter with buffering and anti-collision function according to claim 1, characterized in that: The speed reduction mechanism comprises a speed reduction box (20) fixedly connected to the top of the fixed seat (3); a driving motor (21) is fixedly installed inside the speed reduction box (20); an output end of the driving motor (21) is fixedly connected to a first cross bar (22); a first gear (23) is fixedly installed outside the first cross bar (22); a second gear (24) is meshed with the outside of the first gear (23); a second cross bar (25) is fixedly connected inside the second gear (24); a third gear (26) is fixedly installed at one end of the second cross bar (25); a fourth gear (27) is meshed with the outside of the third gear (26); and a third cross bar (28) is fixedly installed inside the fourth gear (27).

4. A height limiter with buffering and anti-collision function according to claim 3, characterized in that: One end of the second cross bar (25) away from the third gear (26) is rotatably connected to the inner wall of the reduction box (20), one end of the third cross bar (28) extends to the outside of the reduction box (20) and is fixedly connected to the output shaft (38), and one end of the third cross bar (28) located inside the reduction box (20) is rotatably connected to the inner wall of the reduction box (20), the size of the first gear (23) is smaller than the second gear (24), and the size of the third gear (26) is smaller than the fourth gear (27).

5. The height limiter with buffering and anti-collision function according to claim 1, characterized in that: The input shaft (5) and the output shaft (38) are both covered with a belt (39), and anti-deflection plates (40) are installed on the outside of the input shaft (5) and the output shaft (38) and on both sides of the belt (39).

6. The height limiter with buffering and anti-collision function according to claim 1, characterized in that: The limiting mechanism comprises a right-angled trapezoidal block (29) fixedly mounted on the outside of the first tube body (12); a support seat (30) is fixedly mounted on the top of the limiter body (4); an adjusting rod (31) is slidably connected to the top of the support seat (30); one end of the adjusting rod (31) is arranged as an inclined surface and fits with the inclined surface of the right-angled trapezoidal block (29); one end of the adjusting rod (31) away from the right-angled trapezoidal block (29) extends to the outside of the installation box (2) and is fixed with a tooth block (32).

7. The height limiter with buffering and anti-collision function according to claim 1, characterized in that: Detection radars (33) are installed on two side walls of the installation box (2).

8. The height limiter with buffering and anti-collision function according to claim 1, characterized in that: A protrusion (34) is rotatably connected to the outside of the rotating shaft (8) and between the second bevel gear (7) and the limit gear (9), and the protrusion (34) is fixedly mounted on the outside of the installation box (2).

9. The height limiter with buffer and anti-collision function according to claim 1, characterized in that: Two connecting ears (35) are symmetrically provided on both sides of the bottom of the fixing seat (3), and connecting holes (36) are provided on the surfaces of the connecting ears (35). Bolts (37) are threadedly connected inside the connecting holes (36).

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