A remote control micro excavator rotation locking device

Abstract

The utility model relates to engineering machinery safety device technical field, and disclose a kind of remote control miniature excavator rotary locking device, including pedestal, rotary table and mounting rack.The core is in through motor drive connecting rod and bevel gear set, drive both sides screw rod synchronous rotation, make transmission connecting block drive connecting plate and its arc locking block move towards, to realize preliminary locking from both sides and embrace rotary table.For further enhance reliability, still set up the mechanical reinforcement mechanism including threaded rod, hand wheel and clamping plate, by screwing hand wheel can make clamping plate tight and reach mounting rack inboard, form rigid support, realize secondary fixation to locking state.The utility model has realized the combination of the convenience of remote control operation and the reliability of mechanical locking, effectively solved the problem of low efficiency and single locking reliability of traditional manual bolt, with the advantages of quick response, locking firm, high safety.

Description

Technical Field

[0001] This utility model relates to the technical field of safety devices for engineering machinery, specifically a slewing lock device for a remote-controlled mini excavator. Background Technology

[0002] When mini excavators operate in confined spaces, their upper slewing platform requires frequent starts, stops, and precise positioning. For remotely operated mini excavators, effectively locking the slewing platform during shutdown, maintenance, or specific working conditions to prevent accidental rotation due to external forces or hydraulic system leaks is crucial for ensuring equipment and personnel safety. Existing technologies include manual locking via a pin inserted into the slewing bearing hole. However, this method requires the operator to be close to the equipment, which is inefficient, extremely inconvenient in remote control mode, and cannot achieve real-time remote locking, posing a safety hazard. Furthermore, the single friction braking method may fail under long-term heavy loads due to loosening or wear, resulting in insufficient reliability. Therefore, there is an urgent need for a slewing locking device that can achieve rapid and reliable locking via remote control and possesses a mechanical self-locking function to enhance safety. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a remote-controlled mini excavator slewing locking device, including a base and a locking assembly. A slewing platform is provided above the base, and a mounting frame is provided around the top of the slewing platform. A second mounting groove is provided in the middle of the inner wall on both sides of the mounting frame, and a first mounting groove is provided on both sides of the second mounting groove. A lead screw is provided in the first mounting groove, with one end of the lead screw away from the second mounting groove rotatably connected to the inner wall of the first mounting groove. The other end of the lead screw passes through the first mounting groove and is provided with a driven bevel gear. A connecting rod is rotatably connected to the top of the second mounting groove. The upper end of the connecting rod is connected to the output end of a motor located on the top of the mounting frame, and the lower end of the connecting rod is provided with a driving bevel gear that meshes with the driven bevel gear. A transmission connecting block is threaded onto the lead screw, and a locking assembly is provided on the opposite side of the transmission connecting block.

[0004] Preferably, the locking assembly includes a connecting plate and an arc-shaped locking block. The transmission connecting blocks on the opposite sides of the two side walls of the mounting frame are fixedly connected to the two ends of the connecting plate, and the arc-shaped locking block is fixedly connected to the middle of the side of the connecting plate near the rotary table.

[0005] Preferably, the connecting plate is rotatably connected to one end of the threaded rod at the middle of the side away from the rotary table, and the other end of the threaded rod is movably connected to the mounting frame through the side wall of the mounting frame. A retaining plate is threadedly connected between the mounting frame and the connecting plate on the threaded rod.

[0006] Preferably, guide rods are provided on both sides of the threaded rod on the connecting plate. One end of the guide rod is fixedly connected to the side wall of the connecting plate, and the other end passes through the side wall of the mounting frame and is movably connected to the mounting frame. Both ends of the clamping plate 11 are slidably connected to the guide rods.

[0007] Preferably, a handwheel is provided at the end of the threaded rod away from the connecting plate.

[0008] Compared with the prior art, the present invention has the following beneficial effects: By setting up a transmission connecting block driven by a motor, bevel gear, and lead screw, the movement of the arc-shaped locking blocks on both sides can be remotely controlled to achieve rapid and precise clamping and locking of the rotary table, effectively solving the problems of inconvenience and low efficiency of manual pin operation. Furthermore, through the linkage design of handwheel, threaded rod, and clamping plate, after the initial locking is completed, the connecting plate can be rigidly fixed from a mechanical structure, forming a double insurance, which greatly enhances the reliability and impact resistance of the locking, prevents accidental loosening caused by vibration or external impact, and ensures the absolute safety of the equipment during shutdown or maintenance. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a sectional view of the internal structure of the mounting bracket of this utility model; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This utility model Figure 2 Enlarged structural diagram at point B.

[0010] The components are: 1. Base; 2. Rotary table; 3. Mounting bracket; 301. First mounting slot; 302. Second mounting slot; 4. Lead screw; 401. Driven bevel gear; 5. Transmission connecting block; 6. Connecting rod; 601. Motor; 602. Driven bevel gear; 7. Connecting plate; 8. Arc-shaped locking block; 9. Threaded rod; 901. Handwheel; 10. Guide rod; 11. Clamping plate. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Please see Figure 1 - Figure 4A remote-controlled mini excavator slewing locking device includes a rotary table 2 mounted on top of a base 1. A mounting frame 3 is located around the rotary table 2 on the top of the base 1. Second mounting grooves 302 are provided in the middle of the inner walls on both sides of the mounting frame 3. First mounting grooves 301 are provided on both sides of the second mounting grooves 302. A lead screw 4 is installed in each of the first mounting grooves 301. One end of the lead screw 4, away from the second mounting groove 302, is rotatably connected to the inner wall of the first mounting groove 301. The other end of the lead screw 4 passes through the first mounting groove 301 and is equipped with a driven bevel gear 401. A connecting rod 6 is rotatably connected to the top of the 302. The upper end of the connecting rod 6 is connected to the output end of the motor 601 located on the top of the mounting frame 3. A driving bevel gear 602 is provided at the lower end of the connecting rod 6. The driving bevel gear 602 meshes with the driven bevel gear 401. A transmission connecting block 5 is threaded onto the lead screw 4. The locking assembly includes a connecting plate 7 and an arc-shaped locking block 8. The opposite sides of the transmission connecting blocks 5 on both sides of the mounting frame 3 are fixedly connected to the two ends of the connecting plate 7, respectively. An arc-shaped locking block 8 is fixedly connected to the middle of the side of the connecting plate 7 near the rotary table 2.

[0013] Through the above technical solution, the mounting frame 3 set on the periphery of the rotary table 2 at the top of the base 1 provides a mounting carrier for locking related components. The second mounting groove 302 in the middle of the inner wall on both sides of the mounting frame 3 is used to assemble the connecting rod 6, and the first mounting groove 301 on both sides is used to assemble the lead screw 4. At the same time, the lead screw 4, which is set in the first mounting groove 301 and has one end rotatably connected to the groove wall and the other end passing through the groove body and equipped with the driven bevel gear 401, cooperates with the connecting rod 6 set at the top of the second mounting groove 302, which is connected to the motor 601 at the upper end and equipped with the driving bevel gear 602 at the lower end. Power transmission is achieved by the meshing of the driving bevel gear 602 and the driven bevel gear 401. Then, through the transmission connecting block 5 threaded on the lead screw 4, the connecting plate 7 fixedly connected to the opposite side and the arc-shaped locking block 8 fixed in the middle of the side of the connecting plate 7 near the rotary table 2 are driven. Finally, the arc-shaped locking blocks 8 move towards each other and clamp the rotary table 2, thus achieving stable locking of the rotary mechanism of the remote-controlled mini excavator.

[0014] This utility model provides a technical solution in which the middle part of the side of the connecting plate 7 away from the rotary table 2 is rotatably connected to one end of the threaded rod 9, and the other end of the threaded rod 9 passes through the side wall of the mounting frame 3 and is movably connected to the mounting frame 3. A clamping plate 11 is threadedly connected between the mounting frame 3 and the connecting plate 7 on the threaded rod 9. Guide rods 10 are provided on both sides of the threaded rod 9 on the connecting plate 7. One end of the guide rod 10 is fixedly connected to the side wall of the connecting plate 7, and the other end passes through the side wall of the mounting frame 3 and is movably connected to the mounting frame 3. The two ends of the clamping plate 11 are slidably connected to the guide rods 10. A handwheel 901 is provided at the end of the threaded rod 9 away from the connecting plate 7.

[0015] Through the above technical solution, on the one hand, the threaded rod 9, which is rotatably connected to the middle of the side of the connecting plate 7 away from the rotary table 2, and the handwheel 901 set at the end of the threaded rod 9 away from the connecting plate 7, allow the operator to rotate the threaded rod 9 around its own axis by rotating the handwheel 901. On the other hand, the clamping plate 11, which is threadedly connected to the threaded rod 9 between the mounting frame 3 and the connecting plate 7, and the guide rods 10, which are fixed on both sides of the threaded rod 9 on the connecting plate 7 and pass through the side wall of the mounting frame 3, limit the movement direction of the clamping plate 11 through the sliding cooperation between the guide rods 10 and the two ends of the clamping plate 11, so that the clamping plate 11 can slide stably along the guide rods 10 when the threaded rod 9 rotates. Finally, after the arc-shaped locking block 8 clamps the rotary table 2, the clamping plate 11 and the mounting frame 3 form an auxiliary fixation for the connecting plate 7, further enhancing the locking stability of the locking assembly for the rotary table 2. At the same time, the setting of the handwheel 901 also provides a convenient way to manually adjust or strengthen the locking when the electronic drive fails, adapting to the diverse usage scenarios of remote-controlled mini excavators.

[0016] The working principle of this utility model is as follows: When it is necessary to lock the rotary table 2, the motor 601 is started by remote control signal, which drives the connecting rod 6 and the active bevel gear 602 to rotate, thereby driving the driven bevel gears 401 on both sides to rotate synchronously with the lead screw 4; the rotating lead screw 4 drives the transmission connecting block 5 on it to move along the axis of the lead screw 4, thereby driving the connecting plates 7 on both sides and the arc-shaped locking block 8 fixed on them to move towards each other until the arc-shaped locking block 8 tightly hugs the rotary table 2 to achieve initial locking; then, the handwheel 901 can be manually turned to drive the threaded rod 9 to rotate, driving the clamping plate 11 that is threaded with it to move stably along the guide rod 10 towards the side wall of the mounting frame 3 until the clamping plate 11 is tightly against the inner side of the mounting frame 3, forming a rigid mechanical support, thereby completing the secondary fixing of the connecting plate 7 and achieving reliable double locking; when unlocking, the handwheel 901 is turned in the opposite direction to release the clamping plate 11 from the mounting frame 3, and then the motor 601 is controlled to reverse, driving the arc-shaped locking block 8 to move in the opposite direction to release the rotary table 2.

[0017] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A remote control micro excavator swing lock device, characterized by: Includes a base (1) and a locking assembly. A rotary table (2) is provided on top of the base (1). A mounting frame (3) is provided around the top rotary table (2) of the base (1). A second mounting groove (302) is provided in the middle of the inner wall on both sides of the mounting frame (3). A first mounting groove (301) is provided on both sides of the second mounting groove (302). A lead screw (4) is provided in the first mounting groove (301). One end of the lead screw (4) away from the second mounting groove (302) is rotatably connected to the inner wall of the first mounting groove (301). The other end of the lead screw (4) is connected to the inner wall of the first mounting groove (301). The first mounting slot (301) is connected to the end of the second mounting slot (302) and a driven bevel gear (401) is provided. The top of the second mounting slot (302) is rotatably connected to a connecting rod (6). The upper end of the connecting rod (6) is connected to the output end of the motor (601) located on the top of the mounting frame (3). The lower end of the connecting rod (6) is provided with a driving bevel gear (602). The driving bevel gear (602) meshes with the driven bevel gear (401). A transmission connecting block (5) is threaded onto the lead screw (4). A locking component is provided on the opposite side of the transmission connecting block (5).

2. The rotary locking device for a remote-controlled micro excavator according to claim 1, characterized in that: The locking assembly includes a connecting plate (7) and an arc-shaped locking block (8). The transmission connecting blocks (5) on both sides of the mounting bracket (3) are fixedly connected to the two ends of the connecting plate (7) respectively. An arc-shaped locking block (8) is fixedly connected to the middle of the side of the connecting plate (7) near the rotary table (2).

3. The rotation locking device for a remote-controlled micro excavator according to claim 2, characterized in that: The connecting plate (7) is rotatably connected to one end of the threaded rod (9) on the middle of the side away from the rotary table (2). The other end of the threaded rod (9) passes through the side wall of the mounting frame (3) and is movably connected to the mounting frame (3). A clamping plate (11) is threaded between the mounting frame (3) and the connecting plate (7) on the threaded rod (9).

4. The rotary locking device for a remote-controlled micro excavator according to claim 3, characterized in that: Guide rods (10) are provided on both sides of the threaded rod (9) on the connecting plate (7). One end of the guide rod (10) is fixedly connected to the side wall of the connecting plate (7), and the other end passes through the side wall of the mounting frame (3) and is movably connected to the mounting frame (3). The two ends of the clamping plate (11) are slidably connected to the guide rod (10).

5. The rotary lock device for a remote controlled micro excavator according to claim 3, wherein: A handwheel (901) is provided at the end of the threaded rod (9) away from the connecting plate (7).

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