A rotary detection device of an aerial work platform

Abstract

The application discloses a rotary detection device of an aerial work platform, which comprises an equipment plate, one side of the equipment plate is provided with a rack plate, one end of the rack plate is fixedly installed with a buzzer, the upper surface of the equipment plate is provided with two alarms, the two alarms are vertically and mirror-imaged arranged, the other side of the equipment plate is provided with a fitting groove, the equipment plate and the rack plate are provided with a centering detection mechanism, the centering detection mechanism is provided with a load bearing detection mechanism, and the equipment plate and the rack plate are provided with a moving mechanism; in the application, the first pressing disc and the second pressing disc in the load bearing detection mechanism are matched, a switch in the middle of any one alarm is pressed, the tilting of the rotary seat above the rotary is avoided, the bearing capacity of the rotary is prevented from being too large, the construction personnel are warned to stop the work in time, the construction accidents are avoided, the rotary is prevented from being damaged due to the long-time heavy bearing, and the safety hidden danger is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of aerial work vehicles, in particular to a rotation detection device for an aerial work vehicle. Background Art

[0002] Aerial work vehicle is a special lifting vehicle equipped with special devices, which can lift workers and objects to a certain height through lifting mechanism, and is used for high-altitude operations. It is widely used in transportation (street lights, etc.), electricity, municipal administration, gardening, communications, stations, docks, airports, shipbuilding (repair), advertising, photography, shopping malls, stadiums, residential properties, factories and mines, and other aerial work fields.

[0003] Aerial work vehicles achieve 360-degree rotation of the upper and lower arms and the work basket by slewing. However, the slewing of aerial work vehicles in the prior art still has some defects during operation:

[0004] 1. When the aerial work vehicle is rotating, if the rotating seat on the rotating body tilts during operation, the existing technology is mostly inconvenient to detect this. When the rotating seat tilts, it is easy to cause a safety accident. At the same time, the bearing capacity of the rotating body is too high, which is easy to cause damage to the rotating body.

[0005] 2. The upper and lower arms and the work basket of the aerial work vehicle need to be aligned and lowered when folded. However, most existing technologies rely on the construction workers' visual control to control the alignment of the upper and lower arms and the work basket, which makes the alignment and folding of the upper and lower arms and the work basket inconvenient.

[0006] In view of the above problems, there is an urgent need for a rotation detection device for an aerial work vehicle to solve the defects of the rotation of the aerial work vehicle during operation in the prior art. Summary of the Invention

[0007] In order to solve the problem that the existing technology is inconvenient to perform load-bearing detection on the rotation of the aerial work vehicle and inconvenient to detect the alignment of the upper and lower arms and the work basket; the present invention provides a rotation detection device for the aerial work vehicle.

[0008] The technical solution adopted in the present invention is:

[0009] A rotation detection device for an aerial work vehicle comprises an equipment plate (1), characterized in that a frame plate (12) is provided on one side of the equipment plate (1), and a fitting groove (11) is provided on the other side of the equipment plate (1), and the equipment plate (1) is fitted on the outer wall of the aerial work vehicle through the fitting groove (11); two alarms (14) are provided on the upper surface of the equipment plate (1), and the two alarms (14) are arranged in a vertical mirror image; the frame plate (12) is away from the frame plate (12). A buzzer (13) is fixedly mounted on one end of the equipment plate (1); a centering detection mechanism (2) for detecting the rotation angle of the aerial work vehicle is provided on the equipment plate (1) and the frame plate (12); a load-bearing detection mechanism (4) for detecting the load-bearing condition of the aerial work vehicle during rotation is provided on the centering detection mechanism (2); and a moving mechanism (5) for staggering the centering detection mechanism (2) or the load-bearing detection mechanism (4) is provided between the equipment plate (1) and the frame plate (12).

[0010] Furthermore, the centering detection mechanism (2) includes a fixed rod (21), one end of the fixed rod (21) is fixedly mounted with a U-shaped frame (22), and the inner wall of the U-shaped frame (22) is fixedly mounted with a driving gear (23); the other end of the fixed rod (21) is fixedly mounted with an arc-shaped ear plate (211), and the fixed rod (21) is fixedly mounted on the rotating body in the aerial work vehicle through the arc-shaped ear plate (211);

[0011] A first rotating rod (24) is rotatably mounted on the upper surface of the frame plate (12); a cam (25) is fixedly mounted on one end of the first rotating rod (24); a movable plate (26) is provided on the upper surface of the frame plate (12) between the cam (25) and the buzzer (13); a first arc surface block (27) and a second arc surface block (28) are fixedly mounted on both ends of the movable plate (26); the cam (25) corresponds horizontally to the first arc surface block (27) and the second arc surface block (28); and the first arc surface block (27) and the second arc surface block (28) correspond horizontally to the switch of the buzzer (13).

[0012] Furthermore, a slide groove (29) is provided on the upper surface of the frame plate (12), and the movable plate (26) is slidably connected in the slide groove (29); a slider (3) is slidably installed at one end of the slide groove (29), and a connecting rod (31) is fixedly installed on the upper surface of the slider (3), and the lower end of the connecting rod (31) is fixedly connected to the upper surface of the slider (3), and the upper end of the connecting rod (31) is fixedly connected to the lower surface of the movable plate (26); a spring rod (32) is installed on the side of the slider facing the buzzer (13), and one end of the spring rod (32) is fixedly connected to one side of the slider (3), and the other end is fixed on the inner side wall of the slide groove (29).

[0013] Furthermore, two second rotating rods (33) are rotatably mounted on one end of the upper surface of the frame plate (12) near the U-shaped frame (22), and one end of each of the two second rotating rods (33) is fixedly mounted with a passive gear (34), an outer wall of one of the second rotating rods (33) and an outer wall of the first rotating rod (24) are fixedly mounted with a first synchronous wheel (35), a first synchronous belt (36) is installed for transmission between the two first synchronous wheels (35), and a second synchronous wheel (37) is fixedly mounted on the outer wall of the other second rotating rod (33) and an outer wall of the first rotating rod (24), and a second synchronous belt (38) is installed for transmission between the two second synchronous wheels (37).

[0014] Furthermore, the load-bearing detection mechanism (4) includes a fixed seat (41), a through hole for the fixed rod (21) to pass through is opened on the fixed seat (41), and the outer wall of the fixed rod (21) is fixedly connected to the through hole; a hollow rod (411) is fixedly installed on the upper surface of the fixed seat (41), the lower end of the hollow rod (411) is fixed on the fixed seat (41), the upper end of the hollow rod (411) has an opening connected to the inner cavity, a movable rod (42) is slidably provided in the opening, and a contact ball (43) is fixedly installed on the upper end of the movable rod (42); a tension spring (45) is fixedly provided at the lower end of the movable rod (42), one end of the tension spring (45) is fixedly connected to the movable rod (42), and the other end is fixedly connected to the inner bottom wall of the hollow rod (411);

[0015] A first lifting rod (46) and a second lifting rod (48) are fixedly mounted on the outer wall of the contact ball (43), respectively. One end of the first lifting rod (46) is fixedly mounted on the outer wall of the contact ball (43), and the other end is fixedly mounted on a first pressing plate (47); one end of the second lifting rod (48) is fixedly mounted on the outer wall of the contact ball (43), and the other end is fixedly mounted on a second pressing plate (49); the first pressing plate (47) and the second pressing plate (49) are respectively located above and below the two alarms (14), and the first pressing plate (47) and the second pressing plate (49) are vertically corresponding to the switches at the center positions of the two alarms (14).

[0016] Furthermore, a fixing frame (44) is fixedly mounted on the side wall of the hollow rod (411), and the two alarms (14) are fixedly mounted on the fixing frame (44).

[0017] Furthermore, a movable groove (52) is provided on the lower surface of the equipment plate (1), and the moving mechanism (5) is arranged in the movable groove; the frame plate (12) is moved and arranged in the movable groove (52) by the moving mechanism (5); the moving mechanism (5) includes two screws (51), and the two screws (51) are respectively rotatably mounted on the two side walls of the frame plate (12), and two guide blocks (53) are respectively fixedly mounted on the two side walls of the frame plate (12), and the two guide blocks (53) are slidably arranged on the side walls of the movable groove (52), each The lead screws (51) correspond to a guide block respectively, and each lead screw (51) passes through the guide block (53) and is threadedly connected to the corresponding guide block (53); a rotating shaft (54) is provided inside the movable groove (52), one end of the rotating shaft (54) is rotatably mounted on the side wall of the equipment plate (1) and exposed to the equipment plate (1), and the part of the rotating shaft extending into the movable groove is respectively engaged with the two lead screws (51) through the bevel gear (55); by driving the lead screw (51) to rotate, the guide block (53) is driven to slide horizontally in the movable groove (52).

[0018] Furthermore, bevel gears (55) are respectively provided at one end of the lead screw (51) facing the rotating shaft (54) and at a portion of the rotating shaft (54) corresponding to the lead screw (51).

[0019] Furthermore, a worm (56) is rotatably mounted on one side of the device plate (1), and a worm wheel (57) is fixedly mounted on the end of the rotating shaft (54) exposed from the device plate (1). The worm wheel (57) is meshedly connected with a worm (56). By rotating the worm (56), the worm wheel (57) is driven to rotate, thereby realizing the rotation of the rotating shaft (54).

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, by cooperating with the first pressing plate and the second pressing plate in the load-bearing detection mechanism, the switch in the middle of any alarm is pressed to prevent the rotating seat above the slewing from tilting, which would cause the bearing capacity of the slewing to be too large. This would warn the construction workers to stop high-altitude work in time to avoid construction accidents. At the same time, it would prevent the slewing from being damaged due to excessive load for a long time, thereby reducing safety hazards.

[0022] 2、The present application, by pressing the switch of the buzzer in the center detection mechanism of the first camber block or the second camber block, the centering of the upper and lower arms and the working basket is completed from the process of pressing the switch of the buzzer to the process of separating from the switch, the stop alarm action after the first sound and light alarm, the vertical descent of the upper and lower arms and the working basket, thereby conveniently realizing the centering detection of the upper and lower arms and the working basket, and effectively improving the convenience of the centering of the upper and lower arms and the working basket, avoiding repeated operation and low efficiency of the collection operation. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a whole structure schematic diagram of the rotary detection device of the aerial work platform of the present application.

[0024] Figure 2 It is another whole structure schematic diagram of the rotary detection device of the aerial work platform of the present application.

[0025] Figure 3 It is a connection schematic diagram of the rack plate and the equipment plate of the present application.

[0026] Figure 4 It is a connection structure schematic diagram of the moving mechanism and the rack plate of the present application.

[0027] Figure 5 It is an enlarged schematic diagram of A part in the present application. Figure 4

[0028] Figure 6 It is a connection structure schematic diagram of the load detection mechanism and the fixed rod of the present application.

[0029] Figure 7 It is a connection schematic diagram of the centering detection mechanism and the connection of the buzzer of the present application.

[0030] Figure 8 It is a cut structure schematic diagram of the hollow rod of the present application.

[0031] ​In the figure: 1. Equipment plate; 11. Fitting groove; 12. Rack plate; 13. Buzzer; 14. Alarm; 2. Centering detection mechanism; 21. Fixing rod; 211. Arc ear plate; 212. Mounting hole; 22. U-shaped frame; 23. Driving gear; 24. First rotating rod; 25. Cam; 26. Moving plate; 27. First arc surface block; 28. Second arc surface block; 29. ​​Slide; 3. Slider; 31. Connecting rod; 32. Spring rod; 33. Second rotating rod; 34. Passive gear; 35. First Synchronous wheel; 36. First synchronous belt; 37. Second synchronous wheel; 38. Second synchronous belt; 4. Load-bearing detection mechanism; 41. Fixed seat; 411. Hollow rod; 42. Movable rod; 43. Contact ball; 44. Fixed frame; 45. Tension spring; 46. First lifting rod; 47. First pressing plate; 48. Second lifting rod; 49. Second pressing plate; 5. Moving mechanism; 51. Screw; 52. Movable groove; 53. Guide block; 54. Rotating shaft; 55. Bevel gear; 56. Worm; 57. Worm wheel. DETAILED DESCRIPTION

[0032] The following describes the specific implementation of the embodiment of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiment of the present invention and is not used to limit the embodiment of the present invention.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0035] like Figure 1-8As shown, a rotation detection device for an aerial work vehicle of the present invention comprises an equipment plate 1, a frame plate 12 is provided on one side of the equipment plate 1, a buzzer 13 is fixedly installed on one end of the frame plate 12, two alarms 14 are provided on the upper surface of the equipment plate 1, and the two alarms 14 are vertically mirrored. A fitting groove 11 is provided on the other side of the equipment plate 1, a centering detection mechanism 2 is provided on the equipment plate 1 and the frame plate 12, a load-bearing detection mechanism 4 is provided on the centering detection mechanism 2, and a moving mechanism 5 is provided between the equipment plate 1 and the frame plate 12. By setting the fitting groove 11, the fitting groove 11 is attached to the outer wall of the aerial work vehicle rotation, and by setting the centering detection mechanism Mechanism 2, the centering detection mechanism 2 can detect the rotation angle of the aerial work vehicle, thereby realizing the detection of whether the upper and lower arms and the work basket of the aerial work vehicle are aligned, and avoiding the misalignment of the upper and lower arms and the work basket during the descent. By setting the load-bearing detection mechanism 4, the load-bearing detection mechanism 4 can detect the load-bearing condition of the rotation of the aerial work vehicle, and avoid the rotation of the rotating platform of the aerial work vehicle being damaged due to tilt, so as to facilitate maintenance personnel to maintain or replace the rotation in time. By setting the moving mechanism 5, the moving mechanism 5 can make the frame plate 12 move horizontally, so that the centering detection mechanism 2 or the load-bearing detection mechanism 4 can stagger the operation.

[0036] The centering detection mechanism 2 includes a fixed rod 21, one end of the fixed rod 21 is fixedly mounted with a U-shaped frame 22, the inner wall of the U-shaped frame 22 is fixedly mounted with a driving gear 23, the upper surface of the frame plate 12 is rotatably mounted with a first rotating rod 24, one end of the first rotating rod 24 is fixedly mounted with a cam 25, the upper surface of the frame plate 12 is provided with a movable plate 26, one end of the movable plate 26 is fixedly mounted with a first arc surface block 27, the other end of the movable plate 26 is fixedly mounted with a second arc surface block 28, the cam 25 and the first arc surface block 27 and the second arc surface block 28 correspond horizontally, the first arc surface block 27 and the second arc surface block 28 correspond horizontally to the switch of the buzzer 13, by fixing the fixed rod 21 to the outside of the rotating body in the rotation of the aerial work vehicle, when When the rotating body in the rotation rotates, the rotating body can make the driving gear 23 revolve in a circle with the axis of rotation as the center through the fixed rod 21 and the U-shaped frame 22, and by driving the first rotating rod 24 to rotate, the first rotating rod 24 can rotate the cam 25, and the cam 25 can make the movable plate 26 move horizontally through the first arc surface block 27 or the second arc surface block 28, and the movable plate 26 can push the switch of the buzzer 13 through the first arc surface block 27 or the second arc surface block 28 (the switch of the buzzer 13 has a rebound function. When the first arc surface block 27 or the second arc surface block 28 is separated from the switch of the buzzer 13, the switch of the buzzer 13 automatically rebounds and turns off. This is a prior art and will not be described in detail here), thereby realizing the centering alarm.

[0037] The other end of the fixing rod 21 is fixedly mounted with an arc-shaped ear plate 211, and both ends of the arc-shaped ear plate 211 are provided with mounting holes 212. By setting the arc-shaped ear plate 211 and the mounting holes 212, the fixing rod 21 can be fixedly mounted on the rotating body in the aerial work vehicle by installing bolts.

[0038] The upper surface of the frame plate 12 is provided with a slide groove 29, and a slider 3 is slidably installed at one end of the slide groove 29. A connecting rod 31 is fixedly installed on the upper surface of the slider 3, and one end of the connecting rod 31 is fixedly connected to the lower surface of the movable plate 26. The other end of the slide groove 29 is fixedly installed with a spring rod 32, and one end of the spring rod 32 is fixedly connected to one side of the slider 3. By arranging the slide groove 29, the slider 3, the connecting rod 31 and the spring rod 32, when the movable plate 26 moves horizontally toward one side of the buzzer 13, the movable plate 26 can make the slider 3 slide horizontally along the inner wall of the slide groove 29 through the connecting rod 31, and the slider 3 can squeeze the spring rod 32 to shrink the spring rod 32. When the pushing of the movable plate 26 to move horizontally stops, the spring rod 32 automatically extends and resets, and the movable plate 26 is moved horizontally in the opposite direction and reset through the slider 3 and the connecting rod 31.

[0039] Two second rotating rods 33 are rotatably installed on the upper surface of the frame plate 12, and one end of the two second rotating rods 33 is fixedly installed with a passive gear 34, and the outer wall of one second rotating rod 33 and the outer wall of the first rotating rod 24 are fixedly installed with a first synchronous wheel 35, and a first synchronous belt 36 is installed for transmission between the two first synchronous wheels 35, and a second synchronous wheel 37 is fixedly installed on the outer wall of the other second rotating rod 33 and the outer wall of the first rotating rod 24, and a second synchronous belt 38 is installed for transmission between the two second synchronous wheels 37. When the driving gear 23 revolves in a circle, the driving gear 23 engages with any one of the passive gears 34 and drives a passive gear 34 to rotate. A passive gear 34 causes a second rotating rod 33 to rotate, and a second rotating rod 33 can rotate the first rotating rod 24 through the two first synchronous wheels 35, the first synchronous belt 36 or the two second synchronous wheels 37, the second synchronous belt 38. If the driving gear 23 is in the centering state, the driving gear 23 and the two passive gears 34 are in the disengaged state, and the buzzer 13 stops alarming.

[0040] The load-bearing detection mechanism 4 includes a fixed seat 41, which is fixedly connected to the middle of the fixed rod 21. A hollow rod 411 is fixedly installed on the upper surface of the fixed seat 41. A movable rod 42 is slidably provided at one end of the hollow rod 411. A contact ball 43 is fixedly installed at one end of the movable rod 42. A fixed frame 44 is fixedly installed at one end of the hollow rod 411. Two alarms 14 are fixedly installed in the fixed frame 44. A tension spring 45 is fixedly installed on the bottom wall of the hollow rod 411. One end of the tension spring 45 and one end of the movable rod 42 are away from the contact ball 43. The ends are fixedly connected, and the outer walls of the contact ball 43 are respectively fixedly mounted with a first lifting rod 46 and a second lifting rod 48. One end of the first lifting rod 46 is fixedly mounted with a first pressing plate 47, and one end of the second lifting rod 48 is fixedly mounted with a second pressing plate 49. The first pressing plate 47 and the second pressing plate 49 are vertically corresponding to the switches at the center positions of the two alarms 14. When the fixed rod 21 follows the circumference of the rotating body in the rotation, the fixed seat 41, the hollow rod 411, the movable rod 42, the contact ball 43, the fixed frame 44, the alarm 14, The first lifting rod 46, the second lifting rod 48, the first pressing plate 47 and the second pressing plate 49 follow the synchronous revolution. When the rotating seat above the rotation is tilted, if the rotating seat tilts downward, the bottom end of the rotating seat presses the contact ball 43 downward, and the contact ball 43 causes the movable rod 42 to drop vertically and squeeze the tension spring 45. The contact ball 43 causes the first pressing plate 47 and the second pressing plate 49 to drop synchronously through the first lifting rod 46 and the second lifting rod 48. During the drop of the first pressing plate 47, the middle of an alarm 14 above is pressed. When the rotating seat is tilted upward, the tension spring 45 stretches, and the contact ball 43 rises vertically through the movable rod 42. The contact ball 43 can make the first pressing plate 47 and the second pressing plate 49 rise synchronously through the first lifting rod 46 and the second lifting rod 48. The second pressing plate 49 presses the switches in the middle of the alarms 14 below during the rising process. Therefore, the rotating seat can be tilted in any direction to activate the alarm, reminding the construction personnel to stop the aerial work in time to avoid construction accidents and avoid damage to the aerial work vehicle's rotation.

[0041] The lower surface of the equipment plate 1 is provided with a movable groove 52, and the moving mechanism 5 is arranged in the movable groove; the frame plate 12 is moved and arranged in the movable groove 52 by the moving mechanism 5; the moving mechanism 5 includes two screws 51, and the two screws 51 are rotatably mounted on the two side walls of the frame plate 12, and two guide blocks 53 are fixedly mounted on the two side walls of the frame plate 12, and the two guide blocks 53 are slidably arranged on the side walls of the movable groove 52, each of the screws 51 corresponds to a guide block, and each screw 51 passes through the guide block 53 and is threadedly connected to the corresponding guide block 53; the movable groove 5 2 is provided with a rotating shaft 54, one end of which is rotatably mounted on the side wall of the equipment plate 1 and exposed from the equipment plate 1. The portion of the rotating shaft extending into the movable groove is respectively engaged with the two lead screws 51 through bevel gears 55. By driving the lead screw 51 to rotate, the lead screw 51 can drive the guide block 53 to slide horizontally in the movable groove 52, and the guide block 53 can move the frame plate 12 horizontally, so that the two driven gears 34 can exit the range of engagement with the driving gear 23, and only the rotational load-bearing detection is performed. By rotating the rotating shaft 54, the rotating shaft 54 ​​can rotate the two lead screws 51 through the four bevel gears 55.

[0042] A worm 56 is rotatably mounted on one side of the equipment plate 1, and a worm wheel 57 is fixedly mounted on one end of the rotating shaft 54. The worm 56 and the worm wheel 57 are meshed and connected. By rotating the worm 56, the worm 56 can drive the worm wheel 57 to rotate, and the worm wheel 57 can rotate the rotating shaft 54.

[0043] Working principle: Before the aerial work platform is put into operation, the construction personnel first make the fitting groove 11 fit with the outer wall of the aerial work platform's rotation, then fix the equipment plate 1 to the base of the aerial work platform with bolts, and then fix the arc-shaped ear plate 211 to the rotating body in the rotation with bolts, so that it can rotate synchronously with the rotating body later;

[0044] When the aerial work vehicle starts working, the construction worker manually rotates the worm 56, which drives the worm wheel 57 to rotate. The worm wheel 57 rotates the rotating shaft 54, and the rotating shaft 54 ​​rotates the two lead screws 51 through the four bevel gears 55. The two lead screws 51 drive the two guide blocks 53 to slide horizontally in the movable grooves 52. The two guide blocks 53 move the frame plate 12 horizontally. At this time, the two driven gears 34 on the frame plate 12 follow and move synchronously, so that the two driven gears 34 exit the range of engagement with the driving gear 23;

[0045] During the operation of the aerial work vehicle, the slewing body in the slewing body drives the upper and lower arms and the working basket of the aerial work vehicle to rotate 360 ​​degrees. The slewing body causes the fixing seat 41, the hollow rod 411, the movable rod 42, the contact ball 43, the fixing frame 44, the two alarms 14, the first lifting rod 46, the second lifting rod 48, the first pressing plate 47 and the second pressing plate 49 to follow the synchronous revolution through the arc-shaped ear plate 211 and the fixing rod 21.

[0046] If the rotating seat above the rotation tilts downward, the bottom end of the rotating seat presses the contact ball 43 downward, and the contact ball 43 causes the movable rod 42 to drop vertically and squeeze the tension spring 45. The contact ball 43 causes the first pressing plate 47 and the second pressing plate 49 to drop synchronously through the first lifting rod 46 and the second lifting rod 48. During the dropping process of the first pressing plate 47, the switch in the middle of the upper alarm 14 is pressed, and the upper alarm 14 sounds an alarm.

[0047] If the rotating seat tilts upward, the tension spring 45 stretches, and the contact ball 43 rises vertically through the movable rod 42. The contact ball 43 causes the first pressing plate 47 and the second pressing plate 49 to rise synchronously through the first lifting rod 46 and the second lifting rod 48. During the rising process, the second pressing plate 49 presses the switches in the middle of the alarms 14 below. An alarm 14 below sounds an alarm, warning the construction workers to stop the high-altitude work in time to avoid construction accidents. At the same time, it prevents the slewing from being damaged due to long-term overload, thereby reducing safety hazards.

[0048] If the upper and lower arms and the working basket of the aerial work vehicle need to be lowered and put away, the construction personnel rotate the worm 56 in the opposite direction to make the frame plate 12 move horizontally in the opposite direction and reset. At this time, the two passive gears 34 enter the meshing range of the driving gear 23. During the rotation of the rotating body, the rotating body causes the driving gear 23 to perform a circular revolution with the axis of rotation as the center of the circle through the fixed rod 21 and the U-shaped frame 22. The driving gear 23 meshes with any passive gear 34 and drives a passive gear 34 to rotate. A passive gear 34 rotates a second rotating rod 33. A second rotating rod 33 rotates the first rotating rod 24 through two first synchronous wheels 35, a first synchronous belt 36 or two second synchronous wheels 37, a second synchronous belt 38. The first rotating rod 24 rotates the cam 25. The cam 25 causes the movable plate 26 to move horizontally through the first arc block 27 or the second arc block 28. The movable plate 26 By pushing the switch of the buzzer 13 through the first arc block 27 or the second arc block 28, the buzzer 13 automatically emits an audible and visual alarm. When the driving gear 23 revolves in a circular motion to the centered state, the driving gear 23 is located between the two passive gears 34, and the spring rod 32 automatically extends and resets. The movable plate 26, the first arc block 27 and the second arc block 28 are moved horizontally in the opposite direction and reset through the slider 3 and the connecting rod 31. The first arc block 27 or the second arc block 28 is disengaged from the switch of the buzzer 13, the switch of the buzzer 13 rebounds and resets, and the buzzer 13 stops alarming. During this process, the construction personnel can vertically lower and retract the upper and lower arms and the work basket according to the stop alarm action after an audible and visual alarm, thereby conveniently realizing the centering detection of the upper and lower arms and the work basket, thereby effectively improving the convenience of centering and retracting the upper and lower arms and the work basket, and avoiding repeated operations that lead to low efficiency of the retraction operation.

[0049] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A rotation detection device for an aerial work vehicle, comprising a device plate (1), characterized in that: A frame plate (12) is provided on one side of the equipment plate (1), and a fitting groove (11) is provided on the other side of the equipment plate (1), and the equipment plate (1) is fitted on the outer wall of the aerial work vehicle through the fitting groove (11); two alarms (14) are provided on the upper surface of the equipment plate (1), and the two alarms (14) are arranged in a vertical mirror image; a buzzer (13) is fixedly installed on one end of the frame plate (12) away from the equipment plate (1); a centering detection mechanism (2) for detecting the rotation angle of the aerial work vehicle is provided on the equipment plate (1) and the frame plate (12), and a load-bearing detection mechanism (4) for detecting the load-bearing condition of the aerial work vehicle rotation is provided on the centering detection mechanism (2), and a moving mechanism (5) for staggering the centering detection mechanism (2) or the load-bearing detection mechanism (4) is provided between the equipment plate (1) and the frame plate (12); The centering detection mechanism (2) comprises a fixed rod (21), one end of the fixed rod (21) is fixedly mounted with a U-shaped frame (22), and the inner wall of the U-shaped frame (22) is fixedly mounted with a driving gear (23); the other end of the fixed rod (21) is fixedly mounted with an arc-shaped ear plate (211), and the fixed rod (21) is fixedly mounted on the rotating body in the aerial work vehicle through the arc-shaped ear plate (211); A first rotating rod (24) is rotatably mounted on the upper surface of the frame plate (12), a cam (25) is fixedly mounted on one end of the first rotating rod (24), a movable plate (26) is provided on the upper surface of the frame plate (12) between the cam (25) and the buzzer (13), a first arc surface block (27) and a second arc surface block (28) are fixedly mounted on both ends of the movable plate (26), the cam (25) corresponds horizontally to the first arc surface block (27) and the second arc surface block (28), and the first arc surface block (27) and the second arc surface block (28) correspond horizontally to the switch of the buzzer (13); A slide groove (29) is provided on the upper surface of the frame plate (12), and the movable plate (26) is slidably connected in the slide groove (29); a slider (3) is slidably mounted on one end of the slide groove (29), and a connecting rod (31) is fixedly mounted on the upper surface of the slider (3), the lower end of the connecting rod (31) is fixedly connected to the upper surface of the slider (3), and the upper end of the connecting rod (31) is fixedly connected to the lower surface of the movable plate (26); a spring rod (32) is mounted on the side of the slider facing the buzzer (13), one end of the spring rod (32) is fixedly connected to one side of the slider (3), and the other end is fixedly mounted on the inner side wall of the slide groove (29).

2. The rotation detection device for an aerial work vehicle according to claim 1, characterized in that: Two second rotating rods (33) are rotatably mounted on one end of the upper surface of the frame plate (12) near the U-shaped frame (22), and one end of each of the two second rotating rods (33) is fixedly mounted with a passive gear (34), an outer wall of one of the second rotating rods (33) and an outer wall of the first rotating rod (24) are fixedly mounted with a first synchronous wheel (35), a first synchronous belt (36) is installed for transmission between the two first synchronous wheels (35), and a second synchronous wheel (37) is fixedly mounted on the outer wall of the other second rotating rod (33) and an outer wall of the first rotating rod (24), and a second synchronous belt (38) is installed for transmission between the two second synchronous wheels (37).

3. The rotation detection device for an aerial work vehicle according to claim 1, characterized in that: The load-bearing detection mechanism (4) includes a fixed seat (41), a through hole for the fixed rod (21) to pass through is formed on the fixed seat (41), and the outer wall of the fixed rod (21) is fixedly connected to the through hole; a hollow rod (411) is fixedly installed on the upper surface of the fixed seat (41), the lower end of the hollow rod (411) is fixed on the fixed seat (41), the upper end of the hollow rod (411) has an opening connected to the inner cavity, a movable rod (42) is slidably provided in the opening, and a contact ball (43) is fixedly installed on the upper end of the movable rod (42); a tension spring (45) is fixedly provided at the lower end of the movable rod (42), one end of the tension spring (45) is fixedly connected to the movable rod (42), and the other end is fixedly connected to the inner bottom wall of the hollow rod (411); A first lifting rod (46) and a second lifting rod (48) are fixedly mounted on the outer wall of the contact ball (43), respectively. One end of the first lifting rod (46) is fixedly mounted on the outer wall of the contact ball (43), and the other end is fixedly mounted on a first pressing plate (47); one end of the second lifting rod (48) is fixedly mounted on the outer wall of the contact ball (43), and the other end is fixedly mounted on a second pressing plate (49); the first pressing plate (47) and the second pressing plate (49) are respectively located above and below the two alarms (14), and the first pressing plate (47) and the second pressing plate (49) are vertically corresponding to the switches at the center positions of the two alarms (14).

4. The rotation detection device for an aerial work vehicle according to claim 3, characterized in that: A fixing frame (44) is fixedly mounted on the side wall of the hollow rod (411), and the two alarms (14) are fixedly mounted on the fixing frame (44).

5. The rotation detection device for an aerial work vehicle according to claim 1, characterized in that: The lower surface of the equipment plate (1) is provided with a movable groove (52), and the moving mechanism (5) is arranged in the movable groove; the frame plate (12) is moved and arranged in the movable groove (52) through the moving mechanism (5); the moving mechanism (5) includes two screws (51), and the two screws (51) are rotatably mounted on the two side walls of the frame plate (12), and two guide blocks (53) are fixedly mounted on the two side walls of the frame plate (12), and the two guide blocks (53) are slidably arranged on the side walls of the movable groove (52). Each of the The lead screws (51) correspond to a guide block respectively, and each lead screw (51) passes through the guide block (53) and is rotatably connected to the corresponding guide block (53) by means of a thread; a rotating shaft (54) is provided inside the movable groove (52), one end of the rotating shaft (54) is rotatably mounted on the side wall of the equipment plate (1) and exposed to the equipment plate (1), and the portion of the rotating shaft extending into the movable groove is respectively engaged with the two lead screws (51) through a bevel gear (55); by driving the lead screw (51) to rotate, the guide block (53) is driven to slide horizontally in the movable groove (52).

6. The rotation detection device for an aerial work vehicle according to claim 5, characterized in that: Bevel gears (55) are respectively provided on one end of the lead screw (51) facing the rotating shaft (54) and on a portion of the rotating shaft (54) corresponding to the lead screw (51).

7. The rotation detection device for an aerial work vehicle according to claim 5, characterized in that: A worm (56) is rotatably mounted on one side of the device plate (1), and a worm wheel (57) is fixedly mounted on the end of the rotating shaft (54) exposed from the device plate (1). The worm wheel (57) is meshedly connected with a worm (56). By rotating the worm (56), the worm wheel (57) is driven to rotate, thereby realizing the rotation of the rotating shaft (54).

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