Single-drive folding head

Abstract

The application relates to a single-drive folding head, which comprises a base, a bearing seat rotatably arranged on the base, a mast rotatably arranged in the bearing seat, and a driving mechanism arranged on the base, wherein the driving mechanism comprises a driving piece, a first-stage transmission assembly and a second-stage transmission assembly; the driving piece drives the bearing seat to rotate through the first-stage transmission assembly; the first-stage transmission assembly drives the mast to rotate through the second-stage transmission assembly; and the rotating direction of the bearing seat is opposite to that of the mast. The single-drive folding head has the effects of compact structure and stable operation.

Description

Technical Field

[0001] This application relates to the field of gimbal device technology, and in particular to a single-drive folding gimbal. Background Technology

[0002] A folding gimbal is a multi-functional mounting mechanism that includes a flipping mechanism and a gimbal. The gimbal mounted on top of the flipping mechanism can carry devices such as lighting equipment, communication antennas, cameras, and detection devices, and the rotation angle of the mounted equipment can be remotely controlled. It can perform cruise control and fixed-point tracking.

[0003] Existing folding gimbals typically have two independent drive sources. One drive source is used to rotate the folding joint, switching it from a folded state to a vertical working state. The other drive source is used to raise the carrier containing the equipment. However, the dual drive source design means that the switching of the folding joint state and the height adjustment of the carrier need to be done separately. The height adjustment of the carrier can only be done after the folding joint is adjusted. This results in a long overall action time for the gimbal device, which is often unsuitable for application scenarios that require rapid response. As a result, the applicability of folding gimbals is low and there are obvious shortcomings. Utility Model Content

[0004] To improve the applicability of folding gimbals, this application provides a single-drive folding gimbal.

[0005] The single-drive folding gimbal provided in this application adopts the following technical solution: A single-drive folding gimbal includes a base, a support seat rotatably mounted on the base, a mast rotatably mounted inside the support seat, and a drive mechanism mounted on the base. The drive mechanism includes a drive component, a primary transmission assembly, and a secondary transmission assembly. The drive component drives the support seat to rotate via the primary transmission assembly, and the primary transmission assembly drives the mast to rotate via the secondary transmission assembly. The rotation direction of the support seat is opposite to the rotation direction of the mast.

[0006] By adopting the above technical solution, when the gimbal is deployed, the drive component drives the carrier to rotate clockwise and rise through the first transmission component, while the first transmission component drives the mast to rotate counterclockwise and rise through the second transmission component. In this way, the deployment of the carrier and the mast can be completed simultaneously with only a single drive component, without the need for two independent drive sources. This reduces the overall time for adjusting the attitude of the folding gimbal and improves the applicability of the folding gimbal.

[0007] Optionally, the driving component is an electric actuator. The primary transmission assembly includes two first driving rods and two second driving rods, which together form a four-bar linkage. One end of each of the first and second driving rods is rotatably connected to the base via an output shaft, and the other end is hinged to the bearing seat. The two first driving rods are connected by a first connecting rod. The output end of the electric actuator is hinged to the first connecting rod. A connecting seat is fixedly provided at the end of the mast, and the connecting seat is rotatably connected to the bearing seat. The first driving rod is connected to the connecting seat via the secondary transmission assembly.

[0008] By adopting the above technical solution, during deployment, the electric push rod extends to drive the two first drive rods to rotate clockwise around the output shaft. At the same time, the first drive rods transmit power to the connecting seat through the secondary transmission assembly, causing the connecting seat to rotate in the opposite direction around its rotation axis with the bearing seat, thereby causing the mast to rotate synchronously in the opposite direction.

[0009] Optionally, the inner sidewalls of the bearing seat are provided with arc grooves, and the secondary transmission assembly includes a first transmission shaft that is slidably connected inside the arc groove. The two ends of the first transmission shaft are respectively mounted on the two first drive rods. A second transmission shaft is fixedly mounted on the connecting seat, and a transmission frame is fitted on the outer surfaces of the second transmission shaft and the first transmission shaft.

[0010] By adopting the above technical solution, when the first drive rod rotates clockwise around the output shaft, the first drive rod drives the first transmission shaft to slide clockwise along the arc groove. Under the connection of the transmission frame, the first transmission shaft slides and drives the second transmission shaft to swing counterclockwise, thereby causing the connecting seat to rotate counterclockwise around the hinge point, thus realizing the raising of the mast.

[0011] Optionally, both the first and second transmission shafts are provided with grooves, and the transmission frame is embedded inside the grooves.

[0012] By adopting the above technical solution, during the power transmission process, the groove can limit the axial movement of the transmission frame on the first and second transmission shafts, ensuring that the power is stably transmitted from the first transmission shaft to the second transmission shaft, thereby ensuring the stable operation of the folding gimbal attitude switching.

[0013] Optionally, pneumatic spring rods are hinged to both sides of the base, and the ends of the two pneumatic spring rods away from the base are respectively hinged to the opposite ends of the first connecting rod.

[0014] By adopting the above technical solution, the pneumatic spring rod assists the electric push rod in operation when the mast is rising, reducing the driving power of the electric push rod. When the mast falls, the pneumatic spring rod can eliminate the transmission gap of the electric push rod, so that no nodding or jerking will occur during the falling process, and the impact force generated when the mast falls is offset.

[0015] Optionally, the two first drive rods are connected by a second connecting rod.

[0016] By adopting the above technical solution, the second connecting rod can connect the two first drive rods into a whole, reducing the probability of asynchronous swinging of the two first drive rods due to assembly errors, thereby ensuring stable power transmission after the two first drive rods swing synchronously.

[0017] Optionally, the outer side walls of the support are provided with receiving grooves, and the first drive rod and the second drive rod extend into the receiving grooves. The first drive rod and the second drive rod are detachably connected to the support via a connecting assembly. The first drive rod and the drive shaft are detachably connected via a spline engagement.

[0018] By adopting the above technical solution, workers can disconnect the power transmission between the first and second drive rods and the bearing seat through the connecting assembly, and then disconnect the power transmission between the first drive rod and the drive shaft through spline engagement. This makes it easier for workers to inspect and replace the mast connecting seat and the base separately, improving the convenience of worker maintenance.

[0019] Optionally, the support, the first drive rod, and the second drive rod are provided with interconnected pin holes, and the connecting assembly includes a rotating pin that slides through the pin hole. The end of the rotating pin is threaded with a locking nut, and the locking nut abuts against the inner wall of the support.

[0020] By adopting the above technical solution, the worker unscrews the locking nut to remove the rotating pin, then pulls the rotating pin outward to disengage it from the pin hole, and finally pulls the first drive rod and the second drive rod outward to disengage them from the bearing seat, thus achieving the separation of the first transmission component and the bearing seat; during connection, the worker first extends the first drive rod and the second drive rod into the receiving groove and connects the first drive rod and the transmission shaft through spline engagement, then inserts the rotating pin into the pin hole, and finally tightens the locking nut to abut against the end face of the bearing seat, thus achieving the power transmission of the first transmission component and the second transmission component.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. This application sets up a primary transmission component and a secondary transmission component. When the gimbal is deployed, the drive component drives the carrier to rotate clockwise and rise through the first transmission component. At the same time, the first transmission component drives the mast to rotate counterclockwise and rise through the second transmission component. In this way, the deployment of the carrier and the mast can be completed synchronously with only a single drive component. There is no need to configure two independent drive sources, thereby reducing the overall time for attitude adjustment of the folding gimbal and improving the applicability of the folding gimbal. 2. By setting up a connecting component, this application allows workers to disconnect the power transmission between the first and second transmission components, thereby facilitating individual inspection and replacement of the mast connecting seat and base, and improving the convenience of worker maintenance. Attached Figure Description

[0022] Figure 1 This is a structural diagram of this application.

[0023] Figure 2 This is a schematic diagram of the structure of the secondary transmission component in the embodiments of this application.

[0024] Figure 3 This is a cross-sectional view of the support seat located in the receiving groove in an embodiment of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Base; 2. Drive mechanism; 21. Drive component; 22. First-stage transmission assembly; 221. First drive rod; 222. Second drive rod; 223. Output shaft; 224. First connecting rod; 225. Second connecting rod; 226. Pneumatic spring rod; 23. Second-stage transmission assembly; 231. Drive shaft one; 232. Drive shaft two; 233. Transmission frame; 3. Bearing seat; 31. Receiving groove; 32. Arc groove; 33. Pin hole; 4. Connecting assembly; 41. Rotating pin; 411. Blocking block; 42. Locking nut; 5. Connecting seat; 51. Mast; 6. Groove; 7. Connecting plate; 71. Spline groove; 8. Connecting groove; 81. Spline. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0027] This application discloses a single-drive folding gimbal.

[0028] Reference Figure 1 and Figure 2A single-drive folding gimbal includes a base 1, and a drive mechanism 2 is provided inside the base 1. The drive mechanism 2 includes a drive component 21, a primary transmission assembly 22, and a secondary transmission assembly 23. Specifically, the drive component 21 is an electric push rod hinged to the base 1. The primary transmission assembly 22 includes two first drive rods 221 and two second drive rods 222. The two first drive rods 221 and the two drive rods 222 form a four-bar linkage. One end of each of the first drive rods 221 and the second drive rod 222 is rotatably connected to the base 1 through an output shaft 223. The two first drive rods 221 are connected by a first connecting rod 224. The output end of the electric push rod is hinged to the middle position of the first connecting rod 224. When the output end of the electric push rod reaches its maximum stroke, the first connecting rod 224 is in an upright state. When the output end of the electric push rod is fully retracted, the first connecting rod 224 is folded onto the base 1.

[0029] Reference Figure 1 and Figure 2 The end of the first drive rod 221 away from the output shaft 223 is hinged to a support seat 3. The outer side wall of the support seat 3 is provided with a receiving groove 31. The ends of the first drive rod 221 and the second drive rod 222 both extend into the receiving groove 31 and are detachably connected to the support seat 3 by a connecting assembly 4. The ends of the two first drive rods 221 near the support seat 3 are connected by a second connecting rod 225. The connection of the first connecting rod 224 and the second connecting rod 225 makes the rotation amplitude of the two first drive rods 221 the same.

[0030] Reference Figure 1 and Figure 2 The bearing seat 3 is rotatably connected to the connecting seat 5, and the mast 51 is fixedly installed on the connecting seat 5. The end of the first drive rod 221 away from the output shaft 223 is connected to the connecting seat 5 through the secondary transmission assembly 23. The inner sidewalls of the bearing seat 3 are provided with arc grooves 32. The secondary transmission assembly 23 includes a first transmission shaft 231 slidably connected inside the two arc grooves 32. The end of the first drive rod 221 away from the output shaft 223 is detachably connected to the first transmission shaft 231. The connecting seat 5 is fixedly connected to a second transmission shaft 232. The outer surfaces of the second transmission shaft 232 and the first transmission shaft 231 are provided with multiple grooves 6. The grooves 6 are annular. Each groove 6 is fixedly embedded with a transmission frame 233. The transmission frames 233 are together sleeved on the outer surfaces of the first transmission shaft 231 and the second transmission shaft 232.

[0031] When the gimbal is deployed, the electric push rod extends to drive the two first drive rods 221 to rotate clockwise around the output shaft 223 and rise. The end of the first drive rod 221 away from the output shaft 223 pulls the transmission shaft 231 to slide clockwise along the arc groove 32. With the connection of the transmission frame 233, when the transmission shaft 231 slides, it drives the transmission shaft 232 to swing counterclockwise, so that the connecting seat 5 rotates counterclockwise around the hinge point with the bearing seat 3 and rises. In this way, the deployment of the bearing seat 3 and the mast 51 can be completed simultaneously with only a single drive component 21, without the need for two independent drive sources. This reduces the overall time for adjusting the attitude of the folding gimbal and improves the applicability of the folding gimbal.

[0032] Reference Figure 1 and Figure 2 Pneumatic spring rods 226 are provided on both sides of the electric push rod. One end of each pneumatic spring rod 226 is hinged to the base 1, and the other end is respectively hinged to the opposite sides of the first connecting rod 224. When the mast 51 rises, the pneumatic spring rods 226 assist the electric push rod in running and reduce the driving power of the electric push rod. When the mast 51 falls, the pneumatic spring rods 226 can eliminate the transmission backlash of the electric push rod, so that there will be no nodding or jerking during the falling process, and offset the impact force generated when the mast 51 falls, so that the mast moves smoothly.

[0033] Reference Figure 2 and Figure 3 The end of the first drive rod 221 away from the output shaft 223 is detachably connected to the transmission shaft 231 via a spline engagement. Specifically, the opposite ends of the transmission shaft 231 extend into the receiving groove 31 and are fixedly connected to a connecting plate 7. The end of the first drive rod 221 extending into the receiving groove 31 is provided with a connecting groove 8 that overlaps with the connecting plate 7. A spline 81 is fixedly connected to the inner wall of the connecting groove 8. A spline groove 71 is provided on the connecting plate 7 that engages with the spline 81. The power transmission between the first-stage transmission assembly 2222 and the second-stage transmission assembly 2323 is achieved through the engagement of the spline 81 and the spline groove 71.

[0034] Reference Figure 2 and Figure 3 The first drive rod 221 and the second drive rod 222 are connected to the support seat 3 with a through pin hole 33. The connecting component 4 includes a rotating pin 41 that slides through the pin hole 33. One end of the rotating pin 41 is fixedly connected to a blocking block 411, and the other end is threaded to a locking nut 42. The blocking block 411 and the locking nut 42 abut against the outer surface of the support seat 3 respectively.

[0035] During disassembly, the worker first unscrews the locking nut 42 to loosen multiple rotating pins 41 in sequence, then pulls the rotating pins 41 outward to disengage them from the pin holes 33. At this point, the connection between the first drive rod 221 and the second drive rod 222 and the support seat 3 is lost. The worker can then pull the first drive rod 221 or the second drive rod 222 outward to disengage it from the support seat 3. When the first drive rod 221 disengages from the support seat 3, the spline 81 on the first drive rod 221 disengages from the spline groove 71, thus separating the first transmission assembly and the second transmission assembly. During reassembly, the worker first unscrews the first drive rod 221... The first drive rod 221 and the second drive rod 222 are inserted into the receiving groove 31 in sequence. When the first drive rod 221 is inserted, it drives the inner wall of the connecting groove 8 to abut against the connecting plate 7, and causes the spline 81 to be inserted into the spline groove 71. Then, the rotating pin 41 is inserted into the pin hole 33, and finally the locking nut 42 is tightened so that it abuts against the end face of the bearing seat 3. In this way, the power transmission between the first transmission component and the second transmission component is realized. The setting of the connecting component 4, the spline 81 and the spline groove 71 realizes the detachable connection between the first transmission component and the second transmission component, which makes it convenient for workers to inspect and replace the mast 51 and the base 1 separately, and improves the convenience of workers' maintenance.

[0036] The implementation principle of a single-drive folding gimbal in this application embodiment is as follows: When the gimbal is unfolded, an electric push rod extends to drive two first drive rods 221 to rotate clockwise around the output shaft 223 and rise. The end of the first drive rod 221 away from the output shaft 223 pulls the transmission shaft 231 to slide clockwise along the arc groove 32. With the connection of the transmission frame 233, when the transmission shaft 231 slides, it drives the transmission shaft 232 to swing counterclockwise, thereby causing the connecting seat 5 to rotate counterclockwise around the hinge point with the bearing seat 3 and rise. In this way, the unfolding action of the bearing seat 3 and the mast 51 can be completed simultaneously with only a single drive component 21, without the need to configure two independent drive sources, thereby reducing the overall time for attitude adjustment of the folding gimbal and improving the applicability of the folding gimbal.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A single-drive folding gimbal, comprising a base (1), a support seat (3) rotatably mounted on the base (1), and a mast (51) rotatably mounted within the support seat (3), characterized in that, A drive mechanism (2) is provided on the base (1). The drive mechanism (2) includes a drive component (21), a primary transmission assembly (22), and a secondary transmission assembly (23). The drive component (21) drives the bearing seat (3) to rotate through the primary transmission assembly (22). The primary transmission assembly (22) drives the mast (51) to rotate through the secondary transmission assembly (23). The rotation direction of the bearing seat (3) is opposite to the rotation direction of the mast (51).

2. The single-drive folding gimbal according to claim 1, characterized in that, The driving component (21) is an electric push rod. The first-stage transmission assembly (22) includes two first driving rods (221) and two second driving rods (222). The two first driving rods (221) and the two second driving rods (222) form a four-bar linkage. One end of each of the first driving rods (221) and the second driving rods (222) is rotatably connected to the base (1) via an output shaft (223), and the other end is hinged to the bearing seat (3). The two first driving rods (221) are connected by a first connecting rod (224). The output end of the electric push rod is hinged to the first connecting rod (224). A connecting seat (5) is fixedly provided at the end of the mast (51). The connecting seat (5) is rotatably connected to the bearing seat (3). The first driving rod (221) is connected to the connecting seat (5) via the second-stage transmission assembly (23).

3. A single-drive folding gimbal according to claim 2, characterized in that, The inner sidewall of the bearing seat (3) is provided with an arc groove (32). The secondary transmission assembly (23) includes a transmission shaft (231) slidably connected inside the arc groove (32). The two ends of the transmission shaft (231) are respectively set on the two first drive rods (221). The connecting seat (5) is fixedly provided with a transmission shaft (232). The outer surfaces of the transmission shaft (232) and the transmission shaft (231) are together fitted with a transmission frame (233).

4. A single-drive folding gimbal according to claim 3, characterized in that, Both the first drive shaft (231) and the second drive shaft (232) are provided with grooves (6), and the drive frame (233) is embedded in the grooves (6).

5. A single-drive folding gimbal according to claim 2, characterized in that, Pneumatic spring rods (226) are hinged to both sides of the base (1), and the ends of the two pneumatic spring rods (226) away from the base (1) are respectively hinged to the opposite ends of the first connecting rod (224).

6. A single-drive folding gimbal according to claim 2, characterized in that, The two first drive rods (221) are connected by a second connecting rod (225).

7. A single-drive folding gimbal according to claim 3, characterized in that, The outer side walls of the support (3) are provided with receiving grooves (31). The first drive rod (221) and the second drive rod (222) extend into the receiving groove (31). The first drive rod (221) and the second drive rod (222) are detachably connected to the support (3) through the connecting assembly (4). The first drive rod (221) and the transmission shaft (231) are detachably connected through spline engagement.

8. A single-drive folding gimbal according to claim 7, characterized in that, The first drive rod (221) and the second drive rod (222) are provided with a pin hole (33) communicating with the bearing seat (3). The connecting assembly (4) includes a rotating pin (41) that slides through the pin hole (33). The end of the rotating pin (41) is threaded with a locking nut (42), and the locking nut (42) abuts against the inner wall of the bearing seat (3).

Images