Rotary table rotation angle measuring mechanism for overhead working truck

Abstract

The utility model relates to the technical field of rotary table angle measurement, in particular to a rotary table rotation angle measuring mechanism for an overhead working truck. The mechanism comprises an encoder, a follower plate and a fixing frame, a shell of the encoder is fixedly connected to the top of a rotary table bottom plate through the follower plate and keeps rotating synchronously with a rotary supporting inner ring, and a rotating shaft of the encoder is fixed to a rotary center body shell through the fixing frame so as to keep a synchronous static state with a rotary supporting outer ring. And the relative rotation angle between the housing of the encoder and the rotating shaft is the rotation angle of the turntable bottom plate. The mechanism can solve the problem that the rotation angle of the rotary table of the overhead working truck cannot be automatically measured, and has the technical effect of monitoring the rotation angle of the rotary table of the overhead working truck in real time.

Description

Technical Field

[0001] The present application relates to the technical field of turntable angle measurement, and in particular to a turntable rotation angle measurement mechanism for an aerial work vehicle. Background Art

[0002] With the development of automated production and manufacturing, new requirements have been put forward for the automated operation of aerial work vehicles. When working on traditional aerial work vehicles, according to the actual situation of the aerial work site, the staff needs to manually control the turntable to rotate to a specific rotation angle to perform on-site aerial work.

[0003] With the popularization of Internet of Things technology and the requirements of live working robots for aerial work vehicles, the rotation angle data of the turntable on the aerial work vehicle needs to be provided to the control terminal in real time to facilitate the control terminal to judge the current position and serve as the basis for issuing instructions. However, the turntable used in the current aerial work vehicle lacks equipment to automatically measure the rotation angle of the turntable, so it is impossible to monitor the rotation angle of the turntable in real time. Therefore, it is of great significance to design a turntable rotation angle measurement mechanism for aerial work vehicles so that it can monitor the rotation angle of the turntable in real time. Utility Model Content

[0004] In order to measure the rotation angle of a turntable for an aerial work vehicle so as to monitor the rotation angle of the turntable for the aerial work vehicle in real time, the present application provides a turntable rotation angle measuring mechanism for an aerial work vehicle.

[0005] The present application provides a turntable rotation angle measurement mechanism for an aerial work vehicle using the following technical solutions:

[0006] A turntable rotation angle measuring mechanism for an aerial work vehicle comprises an encoder, a follower plate and a fixing frame;

[0007] The turntable mentioned in the present application includes a turntable bottom plate, which is a part of the turntable. The turntable bottom plate rotates synchronously with the turntable. A slewing support, a turntable column upper plate and a slewing center body arranged from top to bottom are installed at the bottom of the turntable bottom plate. The turntable column upper plate connects the slewing support and the slewing center body together along the circumferential direction. The bottom of the turntable column upper plate is fixedly connected with a turntable column for supporting the slewing support and the turntable. The turntable column upper plate and the slewing support outer ring are fixed on the aerial work vehicle, so that the entire turntable is installed on the aerial work vehicle. The slewing support inner ring rotates synchronously with the turntable bottom plate, and the slewing support outer ring remains stationary.

[0008] The turntable bottom plate is fixedly connected to the inner ring of the slewing support by bolts, the outer ring of the slewing support is fixedly connected to the upper plate of the turntable column by bolts, the bottom of the upper plate of the turntable column is fixedly connected to the top of the outer cylinder of the slewing center body by bolts, the bottom of the outer cylinder of the slewing center body is installed with a slewing center body shell, the hydraulic motor is vertically fixedly connected to the top of the turntable bottom plate, the output shaft of the hydraulic motor is connected with the reduction mechanism gear, and the reduction mechanism gear is meshed with the outer ring of the slewing support;

[0009] The housing of the encoder is fixedly connected to the top of the turntable base plate through the follower plate and rotates synchronously with the inner ring of the slewing support. The rotating shaft of the encoder is fixed to the housing of the slewing center body through the fixing frame, thereby maintaining a synchronous static state with the outer ring of the slewing support. The relative rotation angle between the housing of the encoder and the rotating shaft is the rotation angle of the turntable base plate.

[0010] By adopting the above technical solution, the housing of the encoder rotates synchronously with the turntable base plate, and the rotating shaft of the encoder is fixedly connected to the housing of the rotating center body through the fixed frame. Since the turntable base plate is fixedly connected to the inner ring of the rotating support, the housing of the rotating center body and the outer ring of the rotating support remain in a stationary state. Therefore, when the inner ring of the rotating support and the outer ring of the rotating support rotate relative to each other, the inner ring of the rotating support drives the housing of the encoder to rotate through the turntable base plate and the follower plate, and the outer ring of the rotating support and the fixed frame maintain a fixed relative position, so that the housing of the encoder and the rotating shaft of the encoder rotate relative to each other, so that the encoder measures the rotation angle of the turntable base plate by measuring its own relative rotation angle.

[0011] Optionally, the follower plate is fixedly connected to the top of the turntable bottom plate, the encoder is fixedly connected to the top of the follower plate, the follower plate is provided with a through hole, and the rotating shaft of the encoder passes through the through hole from top to bottom and is connected to the fixed frame through a coupling.

[0012] By adopting the above technical solution, the through hole is helpful to provide space, so that the rotating shaft of the encoder can pass through the through hole to connect with the coupling.

[0013] It can be seen that the fixing frame is in an inverted T shape, and the upper end of the fixing frame passes through the rotating center body outer shell, the rotating center body fixed outer cylinder, the rotating support inner ring from bottom to top and is fixedly connected to the coupling, and the lower end of the fixing frame is fixedly connected to the rotating center body outer shell.

[0014] By adopting the above technical solution, the fixing frame is in an inverted T shape, which is conducive to connecting the rotating shaft of the encoder with the rotating center body shell, so that the rotating shaft of the encoder and the rotating center body shell remain relatively fixed, thereby improving the stability of the connection.

[0015] Optionally, the fixing frame includes a vertical connection part and a transverse connection part, the top end of the vertical connection part is connected to the lower end of the coupling, the bottom end of the vertical connection part is fixedly connected to the top of the transverse connection part, and the transverse connection part is fixedly connected to the rotating center body shell by bolts.

[0016] By adopting the above technical solution, the vertical connection part of the fixed frame has a longer longitudinal length, so that the top end of the fixed frame can pass through the rotating center body shell, the rotating center body fixed outer cylinder, the rotating support inner ring and the rotating shaft of the encoder for connection, and the transverse connection part is conducive to the bottom end of the fixed frame having a larger transverse length, which facilitates the bottom end of the fixed frame to be fixedly connected with the rotating center body shell, thereby keeping the entire fixed frame and the rotating support outer ring in the same state.

[0017] Optionally, the vertical connection portion is cylindrical, the transverse connection portion is disc-shaped, and the transverse connection portion is fixedly connected to the outer shell of the rotating center body along the circumferential direction by bolts.

[0018] By adopting the above technical solution, the shape of the vertical connecting part is conducive to connecting with the rotating shaft of the encoder through the coupling, so that the rotating shaft of the encoder and the fixed frame remain in a relatively static state, thereby ensuring that the housing of the encoder and the rotating shaft of the encoder rotate relative to each other, and the shape of the horizontal connecting part is conducive to increasing the contact area with the outer shell of the rotating center body, thereby fixedly connecting the entire fixed frame to the outer shell of the rotating center body.

[0019] Optionally, the vertical connection portion is cylindrical, the transverse connection portion is square, and the four corners of the transverse connection portion are fixedly connected to the outer shell of the rotating center body by bolts.

[0020] By adopting the above technical solution, the shape of the vertical connecting part is conducive to connecting with the rotating shaft of the encoder through the coupling, so that the rotating shaft of the encoder and the fixed frame remain in a relatively static state, thereby ensuring that the housing of the encoder and the rotating shaft of the encoder rotate relative to each other, and the shape of the horizontal connecting part is conducive to increasing the contact area with the outer shell of the rotating center body, thereby fixedly connecting the entire fixed frame to the outer shell of the rotating center body.

[0021] Optionally, the vertical connection part is a cylinder, the transverse connection part is a cross bar, and both ends of the transverse connection part are fixedly connected to the outer shell of the rotating center body by bolts.

[0022] By adopting the above technical solution, the shape of the vertical connecting part is conducive to connecting with the rotating shaft of the encoder through the coupling, so that the rotating shaft of the encoder and the fixed frame remain in a relatively static state, thereby ensuring that the outer shell of the encoder and the rotating shaft of the encoder rotate relative to each other, and the shape of the horizontal connecting part is conducive to ensuring that the fixed frame can be fixedly connected to the outer shell of the rotating center body without affecting the positional relationship between the vertical connecting part and the rotating shaft of the encoder.

[0023] Optionally, the follower plate is circular and is fixedly connected to the top of the turntable bottom plate along the annular direction by bolts.

[0024] By adopting the above technical solution, the connection relationship between the follower plate and the turntable bottom plate can be improved, and the stability of the encoder housing maintaining synchronous rotation with the turntable bottom plate can be improved.

[0025] Optionally, the follower plate is square, and the four corners of the follower plate are fixedly connected to the top of the turntable bottom plate by bolts.

[0026] By adopting the above technical solution, the connection relationship between the follower plate and the turntable bottom plate can be improved, and the stability of the encoder housing maintaining synchronous rotation with the turntable bottom plate can be improved.

[0027] In summary, this application has the following beneficial effects:

[0028] The present application automatically measures the rotation angle of the turntable through an encoder and transmits the rotation angle signal to the control terminal so as to monitor the rotation angle of the turntable in real time and complete high-altitude operations at specific angles. There is no need for workers to stand in the work bucket of the aerial work vehicle to rise to high altitudes. The rotation of the turntable is controlled by manually operating the hydraulic valve, which improves work efficiency and is conducive to improving the level of automated production. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an embodiment.

[0030] Explanation of the reference numerals in the accompanying drawings: 1. fixed frame; 2. follower plate; 3. coupling; 4. encoder; 5. turntable base plate; 6. hydraulic motor; 7. reduction mechanism gear; 8. slewing support inner ring; 9. slewing support outer ring; 10. turntable column upper plate; 11. turntable column; 12. slewing center body fixed outer cylinder; 13. slewing center body outer shell. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0032] The same parts are denoted by the same reference numerals. It should be noted that the words "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inside" and "outside" used in the following description all refer to directions in the drawings, but are not limiting.

[0033] The following is combined with Figure 1 This application is described in further detail.

[0034] The embodiment of the present application discloses a turntable rotation angle measurement mechanism for an aerial work vehicle.

[0035] Reference Figure 1 A turntable rotation angle measuring mechanism for an aerial work vehicle comprises a fixing frame 1, a follower plate 2, a coupling 3 and an encoder 4.

[0036] The turntable mentioned in the present application includes a turntable base plate 5, which is a part of the turntable. The turntable base plate 5 rotates synchronously with the turntable. The bottom of the turntable base plate 5 is installed with a slewing support, a turntable column upper plate 10 and a slewing center body arranged from top to bottom. The turntable column upper plate 10 connects the slewing support and the slewing center body together in a circumferential direction. The bottom of the turntable column upper plate 10 is fixedly connected with a turntable column 11 for supporting the slewing support and the turntable. The turntable column upper plate 10 and the slewing support outer ring 9 are fixed on the aerial work vehicle, so that the entire turntable is installed on the aerial work vehicle, the slewing support inner ring 8 rotates synchronously with the turntable base plate 5, and the slewing support outer ring 9 remains stationary.

[0037] Among them, the turntable bottom plate 5 is fixedly connected to the slewing support inner ring 8 by bolts, the slewing support outer ring 9 is fixedly connected to the turntable column upper plate 10 by bolts, the bottom of the turntable column upper plate 10 is fixedly connected to the top of the slewing center body fixed outer cylinder 12 by bolts, the slewing center body outer shell 13 is installed at the bottom of the slewing center body fixed outer cylinder 12, the hydraulic motor 6 is vertically fixedly connected to the top of the turntable bottom plate 5, and the output shaft of the hydraulic motor 6 is transmission-connected to the reduction mechanism gear 7, and the reduction mechanism gear 7 is meshed with the slewing support outer ring 9.

[0038] The follower plate 2 is fixedly connected to the top of the turntable base plate 5, and the encoder 4 is fixedly connected to the top of the follower plate 2. The upper end of the fixed frame 1 passes through the rotating center body shell 13, the rotating center body fixed outer cylinder 12, and the rotating support inner ring 8 from bottom to top, and is connected to the rotating shaft of the encoder 4 through the coupling 3. The lower end of the fixed frame 1 is fixedly connected to the rotating center body shell 13. The shell of the encoder 4 rotates synchronously with the turntable base plate 5 through the follower plate 2, and the rotating shaft of the encoder 4 does not rotate. The shell of the encoder 4 and the rotating shaft rotate relative to each other to measure the rotation angle of the turntable base plate 5, that is, the rotation angle of the turntable.

[0039] The follower plate 2 is provided with a through hole, and the rotating shaft of the encoder 4 passes through the through hole from top to bottom and is connected to the upper end of the coupling 3, and the lower end of the coupling 3 is connected to the top of the fixed frame 1. The follower plate 2 can be circular, square or other shapes, as long as it is ensured that the follower plate 2 can be fixedly connected to the turntable bottom plate 5 to ensure that the encoder 4 housing and the turntable bottom plate 5 can rotate synchronously. The fixed frame 1 is in an inverted T shape, and the fixed frame 1 includes a vertical connection part and a horizontal connection part. The top end of the vertical connection part is connected to the lower end of the coupling 3, and the bottom end of the vertical connection part is fixedly connected to the top of the horizontal connection part. The horizontal connection part is fixedly connected to the rotating center body housing 13 by bolts. The vertical connection part is cylindrical, and the horizontal connection part can be in the shape of a disc, a square, a cross bar or other shapes, as long as the horizontal connection part can be fixedly connected to the rotating center body housing 13 so that the entire fixed frame 1 does not rotate.

[0040] Working principle: the fixed frame 1 is fixedly connected to the rotating center body shell 13, the rotating center body shell 13 is fixedly connected to the rotating center body fixed outer cylinder 12, the rotating center body fixed outer cylinder 12 is fixedly connected to the turntable column upper plate 10, the turntable column upper plate 10 is fixedly connected to the rotating support outer ring 9, and the turntable column upper plate 10 and the rotating support outer ring 9 are fixed together on the aerial work vehicle body, therefore, the turntable column upper plate 10 and the rotating support outer ring 9 do not rotate. The hydraulic motor 6 drives the reduction mechanism gear 7 to rotate. The reduction mechanism gear 7 is meshed with the outer side of the slewing support outer ring 9, and the slewing support outer ring 9 is fixed on the aerial work vehicle body, so the slewing support outer ring 9 will not rotate. Therefore, the slewing support outer ring 9 will provide a reverse force to the reduction mechanism gear 7, so that the reduction mechanism gear 7 drives the hydraulic motor 6 to rotate. The hydraulic motor 6 is fixedly connected to the turntable bottom plate 5, so the hydraulic motor 6 will drive the turntable bottom plate 5 to rotate synchronously. The turntable bottom plate 5 rotates along the center of the flat plate 10 on the turntable column. The follower plate 2 is fixedly connected to the turntable bottom plate 5, and the encoder 4 housing is fixedly connected to the follower plate 2. Therefore, the follower plate 2 and the encoder 4 housing will rotate synchronously with the turntable bottom plate 5. At this time, the encoder 4 housing rotates synchronously with the turntable, and the rotation angle of the encoder 4 housing is the rotation angle of the turntable.

[0041] When the reduction mechanism gear 7 drives the hydraulic motor 6 to rotate relative to the slewing support outer ring 9, the fixed frame 1 does not rotate because the slewing support outer ring 9 does not move, and the rotating shaft of the encoder 4 connected to the fixed frame 1 through the coupling 3 does not rotate either, that is, the housing of the encoder 4 rotates relative to the rotating shaft of the encoder 4, and the encoder 4 determines the rotation angle of the turntable by its own rotation.

[0042] This specific embodiment is an explanation of the present application, but it is not a limitation of the present application. Changes, modifications, additions or substitutions made within the essential scope of the present application should all fall within the scope of protection of the present application. After reading this specification, those skilled in the art can make modifications to the present embodiment without creative contribution as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A turntable rotation angle measuring mechanism for an aerial work vehicle, characterized in that: It comprises an encoder (4), a follower plate (2) and a fixing frame (1); The housing of the encoder (4) is fixedly connected to the top of the turntable bottom plate (5) through the follower plate (2) and rotates synchronously with the slewing support inner ring (8). The rotating shaft of the encoder (4) is fixed to the housing (13) of the slewing center body through the fixed frame (1), thereby maintaining a synchronous static state with the slewing support outer ring (9). The relative rotation angle between the housing of the encoder (4) and the rotating shaft is the rotation angle of the turntable bottom plate (5).

2. The turntable rotation angle measuring mechanism for aerial work vehicle according to claim 1, characterized in that: The follower plate (2) is fixedly connected to the top of the turntable bottom plate (5), and the encoder (4) is fixedly connected to the top of the follower plate (2). The follower plate (2) is provided with a through hole, and the rotating shaft of the encoder (4) passes through the through hole from top to bottom and is connected to the fixed frame (1) through a coupling (3).

3. The turntable rotation angle measuring mechanism for aerial work vehicle according to claim 2, characterized in that: The fixing frame (1) is in an inverted T shape. The upper end of the fixing frame (1) passes through the rotating center body outer shell (13), the rotating center body fixed outer cylinder (12), and the rotating support inner ring (8) in sequence from bottom to top and is fixedly connected to the coupling (3). The lower end of the fixing frame (1) is fixedly connected to the rotating center body outer shell (13).

4. The turntable rotation angle measuring mechanism for aerial work vehicle according to claim 3, characterized in that: The fixing frame (1) comprises a vertical connection part and a transverse connection part, the top end of the vertical connection part is connected to the lower end of the coupling (3), the bottom end of the vertical connection part is fixedly connected to the top of the transverse connection part, and the transverse connection part is fixedly connected to the rotating center body shell (13) by bolts.

5. The turntable rotation angle measuring mechanism for aerial work vehicle according to claim 4, characterized in that: The vertical connection part is cylindrical, the transverse connection part is disc-shaped, and the transverse connection part is fixedly connected to the outer shell (13) of the rotary center body along the circumferential direction by bolts.

6. The turntable rotation angle measuring mechanism for aerial work vehicle according to claim 4, characterized in that: The vertical connection part is cylindrical, the transverse connection part is square, and the four corners of the transverse connection part are fixedly connected to the outer shell (13) of the rotary center body by bolts.

7. The turntable rotation angle measuring mechanism for aerial work vehicle according to claim 4, characterized in that: The vertical connection part is in the form of a cylinder, the transverse connection part is in the form of a crossbar, and both ends of the transverse connection part are fixedly connected to the outer shell (13) of the rotary center body by means of bolts.

8. The turntable rotation angle measuring mechanism for aerial work vehicle according to claim 2, characterized in that: The follower plate (2) is circular and is fixedly connected to the top of the turntable bottom plate (5) along the circumferential direction by bolts.

9. The turntable rotation angle measuring mechanism for aerial work vehicle according to claim 2, characterized in that: The follower plate (2) is square in shape, and the four corners of the follower plate (2) are fixedly connected to the top of the turntable bottom plate (5) by bolts.

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