Toy excavator rotating arm and toy excavator

Abstract

The utility model relates to a toy excavator rotating arm and a toy excavator. The toy excavator rotating arm is arranged on the toy excavator. On a rotating arm of the toy excavator, a tool seat is driven to rotate through a rotating mechanism, and a movable tool is driven to rotate through the tool seat; therefore, on one hand, the movable tool can execute corresponding actions on the tool seat, and on the other hand, the movable tool can rotate relative to the mounting seat, so that the tool flexibility of the toy excavator is greatly improved. Furthermore, the rotating motor and the rotating gear assembly are both arranged on the mounting seat and cannot rotate along with the tool seat; therefore, the rotating load of the tool mechanism can be reduced, and the rotating sensitivity and the rotating power consumption are improved.

Description

Technical Field

[0001] The utility model relates to the field of toy excavators, in particular to a rotating arm of a toy excavator and a toy excavator. Background Art

[0002] Although various settings are made for the tooling positions on the toy excavators on the current market, and the tooling positions can be selected as a bucket, a clamp or a cutting pliers, etc., the existing toy excavators generally have the problem of single function. Specifically, most of the toy excavators on the current market are mainly designed to focus on the simulation of appearance and the basic operation experience, such as the simple imitation of the digging action. Such toys usually drive the digging arm to perform simple up-and-down or front-and-back movements in a mechanical or electric way to realize the digging function.

[0003] However, in the actual use process, the tooling part of the toy digging arm cannot realize free rotation, and the flexibility of the tooling part is relatively low. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a rotating arm of a toy excavator and a toy excavator, which can solve the problem of low flexibility of the tooling part.

[0005] The first aspect of the utility model provides a rotating arm of a toy excavator, which comprises:

[0006] A mounting seat, which is connected to the toy digging arm;

[0007] A tooling mechanism, which comprises a tooling seat and a movable tooling, and the movable tooling is movably arranged on the tooling seat; and

[0008] A rotating mechanism, which comprises a gear ring, a rotating motor and a rotating gear assembly. The gear ring is connected to the tooling seat, the rotating motor and the rotating gear assembly are respectively arranged on the mounting seat, the rotating motor is drivingly connected to the rotating gear assembly, and the rotating gear assembly meshes with the gear ring;

[0009] Wherein, the rotating motor drives the gear ring to rotate on the mounting seat through the rotating gear assembly, so that the gear ring drives the tooling seat to rotate, and further the tooling seat drives the movable tooling to rotate.

[0010] Preferably, the rotating mechanism further comprises a bracket, the bracket is arranged on the tooling seat, the rotating motor and the rotating gear assembly are respectively arranged on the bracket, and the gear ring is sleeved outside the bracket.

[0011] Preferably, the rotating gear assembly includes a clutch gear, an output gear and a plurality of transmission gears, and the clutch gear, the output gear and each of the transmission gears are rotatably arranged on the bracket;

[0012] The rotating motor is drivingly connected to the transmission gear, and the transmission gears are meshed in sequence. The clutch gear is meshed with the transmission gear and the output gear respectively, and the output gear is meshed with the toothed ring.

[0013] Preferably, the clutch gear includes a support shaft, a first gear, a second gear and an elastic member. The support shaft is arranged on the bracket, and the first gear, the second gear and the elastic member are all sleeved on the support shaft. The elastic member abuts against the first gear, and the elastic member provides a force to drive the first gear to slide along the support shaft and approach the second gear, so that the first gear and the second gear are detachably drivingly connected;

[0014] The first gear is meshed with the transmission gear, and the second gear is meshed with the output gear.

[0015] Preferably, a limiting protrusion is arranged on the toothed ring, and a limiting edge is arranged on the mounting seat. The limiting protrusion is driven by the toothed ring and abuts against the limiting edge.

[0016] Preferably, an avoidance groove is arranged on the mounting seat, the bracket is arranged in the avoidance groove, and the tooling seat is rotatably arranged in the avoidance groove.

[0017] Preferably, a rotating ring groove is formed in the tooling seat along the circumferential direction. The rotating mechanism further includes a positioning block, which is detachably assembled on the mounting seat, inserted into the rotating ring groove, and can slide along the rotating ring groove.

[0018] Preferably, an annular flange is arranged on the tooling seat, and the circumferential side wall of the toothed ring and the annular flange jointly define the rotating ring groove.

[0019] Preferably, a buckle is arranged on the tooling seat, and a clamping hole is formed in the toothed ring. The buckle is clamped in the clamping hole.

[0020] In a second aspect of the present invention, a toy excavator is further provided. The toy excavator includes the toy excavator rotating arm in any one of the above technical solutions. A support pin connection position and a movable pin connection position are arranged on the mounting seat. The support pin connection position is rotatably connected to the toy excavating arm, and a telescopic cylinder is arranged on the toy excavating arm. The telescopic cylinder is connected to the movable pin connection position.

[0021] Implementing the present invention has the following beneficial effects:

[0022] The utility model relates to a rotary arm of a toy excavator and a toy excavator. A rotary arm of the toy excavator is arranged on the toy excavator; on the rotary arm of the toy excavator, a tooling seat is driven to rotate through a rotating mechanism, and a movable tooling is driven to rotate through the tooling seat; thus, on the one hand, the movable tooling can perform corresponding actions on the tooling seat, and on the other hand, the movable tooling can also rotate relative to the mounting seat, thereby greatly improving the tooling flexibility of the toy excavator.

[0023] Furthermore, the rotating motor and the rotating gear assembly are both arranged on the mounting seat and will not rotate along with the tooling seat; thus, the rotating load of the tooling mechanism can be reduced, and the rotating sensitivity and rotating power consumption can be improved. Description of the Drawings

[0024] By describing the exemplary embodiments of the present utility model in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present utility model will become more obvious. Among them, in the exemplary embodiments of the present utility model, the same reference numerals generally represent the same components.

[0025] Figure 1 is a schematic structural diagram of a rotary arm of a toy excavator in some embodiments of the present utility model;

[0026] Figure 2 is from another perspective Figure 1 a schematic structural diagram of the shown rotary arm of the toy excavator;

[0027] Figure 3 is an exploded view of a rotary arm of a toy excavator in some embodiments of the present utility model;

[0028] Figure 4 is Figure 3 a schematic partial structural diagram of the shown rotary arm of the toy excavator;

[0029] Figure 5 is Figure 3 an enlarged view at A;

[0030] Figure 6 is a schematic structural diagram of a clutch gear in some embodiments of the present utility model. Detailed Embodiments

[0031] The embodiments of the present utility model will be described in more detail below with reference to the drawings. Although the embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present utility model more thorough and complete, and to fully convey the scope of the present utility model to those skilled in the art.

[0032] It should be understood that although the terms "first", "second", "third", etc. may be used in the present utility model to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present utility model, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0034] Unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] Figure 1 The toy excavator rotating arm 10 in some embodiments of the present utility model is shown, and the toy excavator rotating arm 10 is installed on the toy excavating arm of the toy excavator.

[0036] It can be understood that the toy excavating arm is a prior art, and it is used to drive the toy excavator rotating arm 10 to move up and down and move forward and backward.

[0037] As Figure 1 and Figure 2 shown, the toy excavator rotating arm 10 includes a mounting seat 1, a tooling mechanism 2 and a rotating mechanism 3. The tooling mechanism 2 is rotatably arranged on the mounting seat 1, and the rotating mechanism 3 is drivingly connected to the tooling mechanism 2. The rotating mechanism 3 is used to drive the tooling mechanism 2 to rotate.

[0038] As Figures 1 to 4As shown, the mounting base 1 is connected to the toy digging arm. The tooling mechanism 2 includes a tooling base 21 and a movable tooling 22, and the movable tooling 22 is movably arranged on the tooling base 21. The rotating mechanism 3 includes a gear ring 31, a rotating motor 32 and a rotating gear assembly 33. The gear ring 31 is connected to the tooling base 21, the rotating motor 32 and the rotating gear assembly 33 are respectively arranged on the mounting base 1, the rotating motor 32 is drivingly connected to the rotating gear assembly 33, and the rotating gear assembly 33 meshes with the gear ring 31. Among them, the rotating motor 32 drives the gear ring 31 to rotate on the mounting base 1 through the rotating gear assembly 33, so that the gear ring 31 drives the tooling base 21 to rotate, and then the tooling base 21 drives the movable tooling 22 to rotate.

[0039] It can be understood that the mounting base 1 is used to ensure the stable connection between the toy excavator rotating arm 10 and other toy digging arm components, providing a reliable and stable foundation for subsequent rotation actions.

[0040] The tooling base 21 is used to mount the movable tooling 22 and drive the movable tooling 22 to rotate together; at the same time, the tooling base 21 is also used to support the movement of the movable tooling 22. Among them, the movable tooling 22 is an existing technology. Specifically, the movable tooling 22 can be configured as a bucket tooling, a clamp tooling or a shear tooling and other common toolings in the existing technology.

[0041] The gear ring 31 is connected to the tooling base 21 and is used to drive the tooling base 21 to rotate. The rotating motor 32 drives the gear ring 31 to rotate by driving the rotating gear assembly 33, and then drives the tooling base 21 and the movable tooling 22 to rotate. The rotating gear assembly 33 is used to convert the torque output by the rotating motor 32 into the rotational movement of the gear ring 31, ensuring the smoothness and efficiency of the transmission process.

[0042] As Figure 3 and Figure 4 shown, in some embodiments of the toy excavator rotating arm 10, the rotating mechanism 3 further includes a bracket 34. The bracket 34 is arranged on the tooling base 21, the rotating motor 32 and the rotating gear assembly 33 are respectively arranged on the bracket 34, and the gear ring 31 is sleeved outside the bracket 34.

[0043] It can be understood that the bracket 34 is used to provide a mounting position for the rotating motor 32 and the rotating gear assembly 33. During the actual operation process, the bracket 34 provides stable support for the rotating motor 32 and the rotating gear assembly 33, ensuring the stability of the components during operation, so as to ensure that the tooling base 21 and the movable tooling 22 thereon can rotate smoothly, improving the rotation stability.

[0044] In addition, installing the rotating motor 32 and the rotating gear assembly 33 on the bracket 34 can, to a certain extent, protect these precision components from external impacts or collisions, extending the service life of the entire toy excavator rotating arm 10.

[0045] As Figures 3 to 6 shown, in some embodiments of the rotating arm 10 of the toy excavator, the rotating gear assembly 33 includes a clutch gear 331, an output gear 332 and a plurality of transmission gears 333. The clutch gear 331, the output gear 332 and each transmission gear 333 are rotatably arranged on the bracket 34;

[0046] The rotating motor 32 is drivingly connected to the transmission gear 333. The transmission gears 333 are meshed in sequence. The clutch gear 331 is meshed with the transmission gear 333 and the output gear 332 respectively, and the output gear 332 is meshed with the gear ring 31.

[0047] Understandably, the clutch gear 331 is configured to automatically disconnect the torque transmission when the gear ring 31 reaches a preset limit angle, preventing mechanical damage caused by excessive torque application. When the gear ring 31 rotates to a certain angle, the clutch gear 331 will stop outputting torque to the output gear 332, cutting off the torque transmission to protect the transmission system from damage.

[0048] The output gear 332 is used to convert the rotational force transmitted by the transmission gear 333 into the rotation of the gear ring 31, thereby driving the tooling base 21 and the movable tooling 22 to rotate.

[0049] The transmission gears 333 are meshed in sequence to form a transmission link. The transmission gear 333 is driven by the rotating motor 32, and the torque output by the rotating motor 32 is transmitted to the output gear 332 through a series of gears, ultimately realizing the rotation of the gear ring 31.

[0050] It should be noted that through the content of this type of embodiment, the output speed and torque of the rotating motor 32 can be effectively adjusted to the state most suitable for the rotation of the gear ring 31, thereby ensuring the smooth rotation of the tooling base 21 and the movable tooling 22.

[0051] As Figure 5 and Figure 6 shown, in some embodiments of the rotating arm 10 of the toy excavator, the clutch gear 331 includes a support shaft 3311, a first gear 3312, a second gear 3313 and an elastic member 3314. The support shaft 3311 is arranged on the bracket 34. The first gear 3312, the second gear 3313 and the elastic member 3314 are all sleeved on the support shaft 3311. The elastic member 3314 abuts against the first gear 3312. The elastic member 3314 provides a force to drive the first gear 3312 to slide along the support shaft 3311 and approach the second gear 3313, so that the first gear 3312 is detachably drivingly connected to the second gear 3313; the first gear 3312 is meshed with the transmission gear 333, and the second gear 3313 is meshed with the output gear 332.

[0052] It can be understood that the support shaft 3311 is arranged on the bracket 34, and is used to support the first gear 3312, the second gear 3313 and the elastic member 3314. The first gear 3312 is sleeved on the support shaft 3311 and meshed with the transmission gear 333, and is used to receive the power from the rotating motor 32. The second gear 3313 is also sleeved on the support shaft 3311 and is arranged opposite to the first gear 3312. The second gear 3313 is meshed with the output gear 332, and is responsible for transmitting the power of the clutch gear 331 to the output gear 332, thereby driving the ring gear 31 to rotate. The elastic member 3314 is used to provide elastic force to the first gear 3312, so that the first gear 3312 always has a tendency to slide along the support shaft 3311 toward the second gear 3313.

[0053] It should be noted that when the first gear 3312 and the second gear 3313 are mutually supported and matched due to the force of the elastic member 3314 , the first gear 3312 will drive the second gear 3313 to rotate during the rotation process.

[0054] When the gear ring 31 rotates to a preset limit angle, the gear ring will not be able to continue to rotate in this direction. In this way, the stuck gear ring will make the second gear unable to rotate, so that the first gear will not be able to continue to drive the second gear to rotate, and then the first gear will overcome the elastic force of the elastic member 3314 and continue to slide along the surface contour of the second gear during the rotation process. In this way, the movable tooling 22 rotated to the maximum angle will not be able to continue to rotate.

[0055] like Figure 4 As shown, in some embodiments of the toy excavator rotating arm 10 , a limiting protrusion 311 is provided on the gear ring 31 , and a limiting edge is provided on the mounting seat 1 . The limiting protrusion 311 is driven by the gear ring 31 to abut against the limiting edge.

[0056] It can be understood that the limiting protrusion 311 is provided on the gear ring 31 and will move with the rotation of the gear ring 31. When the gear ring 31 rotates to a predetermined angle, the limiting protrusion 311 will contact the limiting edge, thereby preventing the gear ring 31 from further rotating. The limiting edge cooperates with the limiting protrusion 311 to limit the maximum rotation angle of the gear ring 31, thereby limiting the maximum rotation angle of the movable tooling.

[0057] It should be noted that the cooperation between the limiting protrusion 311 and the limiting edge can effectively prevent the gear ring 31 from over-rotating, avoid mechanical damage caused by overload, and improve the safety and reliability of the toy excavator rotating arm 10.

[0058] like Figure 3 As shown, in some embodiments of the toy excavator rotating arm 10 , a avoiding groove 11 is provided on the mounting seat 1 , the bracket 34 is disposed in the avoiding groove 11 , and the tooling seat 21 is rotatably disposed in the avoiding groove 11 .

[0059] It can be understood that the avoidance groove 11 is used to provide sufficient space for the bracket 34 and the tooling seat 21 to ensure that they can be installed and rotated smoothly; furthermore, the groove wall of the avoidance groove 11 can also play the role of limiting the tooling seat 21 to a certain extent to prevent the tooling seat 21 from shifting.

[0060] It should be noted that, by providing the avoidance groove 11 , the space of the mounting seat 1 can be effectively utilized, making the structure of the entire toy excavator rotating arm 10 more compact.

[0061] like Figure 3 and Figure 4 As shown, in some embodiments of the toy excavator rotating arm 10, the tooling seat 21 is provided with a rotating ring groove 211 along the circumferential direction, and the rotating mechanism 3 also includes a positioning block 35, which is detachably assembled on the mounting seat 1, and the positioning block 35 is inserted into the rotating ring groove 211, and the positioning block 35 can slide along the rotating ring groove 211.

[0062] It can be understood that the rotating annular groove 211 is provided in the circumferential direction of the tooling seat 21 to guide the sliding of the positioning block 35 and ensure the stability and accuracy of the tooling seat 21 during the rotation process. The positioning block 35 is detachably assembled on the mounting seat 1, and the tooling seat 21 is positioned by being inserted into the rotating annular groove 211 and slidingly matched therewith. The detachable feature of the positioning block 35 allows the user to quickly replace different movable tooling according to the use requirements, thereby improving the convenience of the product.

[0063] like Figure 4 As shown, in some embodiments of the toy excavator rotating arm 10 , an annular flange 212 is provided on the tooling seat 21 , and the peripheral side wall of the gear ring 31 and the annular flange 212 jointly define a rotating annular groove 211 .

[0064] It can be understood that the annular flange 212 is arranged on the tooling seat 21, and together with the peripheral side wall of the ring gear 31 forms a rotating annular groove 211 for limiting the sliding path of the positioning block 35 to ensure the stability and accuracy of the tooling seat 21 during rotation.

[0065] like Figure 4 As shown, in some embodiments of the toy excavator rotating arm 10 , a buckle 213 is provided on the tooling seat 21 , a clamping hole 312 is opened on the gear ring 31 , and the buckle 213 is clamped in the clamping hole 312 .

[0066] It can be understood that the buckle 213 is provided on the tooling seat 21 to cooperate with the buckle hole 312 on the gear ring 31 to achieve a firm connection between the gear ring 31 and the tooling seat 21 .

[0067] It should be noted that the number of the buckles 213 can be set to two or more. During assembly, each buckle 213 will be correspondingly snapped into a clamping hole 312. Further, the buckles 213 are symmetrically arranged on the tooling base 21.

[0068] The toy excavator of the present utility model includes a toy excavator rotating arm 10. A support pin connection position 12 and a movable pin connection position 13 are arranged on the mounting seat 1. The support pin connection position 12 is rotatably connected to the toy excavating arm. A telescopic cylinder is arranged on the toy excavating arm, and the telescopic cylinder is connected to the movable pin connection position 13.

[0069] It can be understood that the support pin connection position 12 is used for the rotational connection with the toy excavating arm to ensure that the toy excavating arm can rotate smoothly.

[0070] The movable pin connection position 13 is used for connecting with one end of the telescopic cylinder, and the other end of the telescopic cylinder is connected to the toy excavating arm.

[0071] The telescopic cylinder is a device that can expand and contract. One end of the telescopic cylinder is connected to the movable pin connection position 13, and the other end is connected to the toy excavating arm.

[0072] It should be noted that the telescopic cylinder can be configured as a component capable of outputting torque, so as to directly drive the movement of the mounting seat 1 through the telescopic cylinder. In some other embodiments, the telescopic cylinder can be configured not to have the ability to output torque, and the movement of the mounting seat 1 is realized by a motor gear drive mechanism arranged on the toy excavating arm, and the telescopic cylinder only plays a role in improving the simulation degree of the product.

[0073] Implementing the present utility model has the following beneficial effects:

[0074] The present utility model relates to a toy excavator rotating arm and a toy excavator. A toy excavator rotating arm is arranged on the toy excavator; on the toy excavator rotating arm, the tooling base is driven to rotate through a rotating mechanism, and the movable tooling is driven to rotate through the tooling base; in this way, on the one hand, the movable tooling can perform corresponding actions on the tooling base, and on the other hand, it can also rotate relative to the mounting seat, thereby greatly improving the tooling flexibility of the toy excavator.

[0075] Furthermore, the rotating motor and the rotating gear assembly are both arranged on the mounting seat and will not rotate with the tooling base; in this way, the rotational load of the tooling mechanism can be reduced, and the rotational sensitivity and rotational power consumption can be improved.

[0076] The solution of the present utility model has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of the respective embodiments have their own focuses. For the parts not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the specification are not necessarily essential to the present utility model. In addition, it can be understood that the steps in the method embodiments of the present utility model can be adjusted, combined, and deleted according to actual needs, and the modules in the device embodiments of the present utility model can be combined, divided, and deleted according to actual needs.

[0077] The various embodiments of the present utility model have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary skill in the art in the technical field to understand the embodiments disclosed herein.

Claims

1. A rotating arm of a toy excavator, characterized in that, Comprising: A mounting base, which is connected to the toy digging arm; A tooling mechanism, which includes a tooling base and a movable tooling, and the movable tooling is movably arranged on the tooling base; And A rotating mechanism, which includes a gear ring, a rotating motor and a rotating gear assembly. The gear ring is connected to the tooling base, the rotating motor and the rotating gear assembly are respectively arranged on the mounting base, the rotating motor is drivingly connected to the rotating gear assembly, and the rotating gear assembly meshes with the gear ring; Wherein, the rotating motor drives the gear ring to rotate on the mounting base through the rotating gear assembly, so that the gear ring drives the tooling base to rotate, and further the tooling base drives the movable tooling to rotate.

2. The rotating arm of the toy excavator according to claim 1, characterized in that The rotating mechanism further includes a bracket, the bracket is arranged on the tooling base, the rotating motor and the rotating gear assembly are respectively arranged on the bracket, and the gear ring is sleeved outside the bracket.

3. The rotating arm of the toy excavator according to claim 2, characterized in that, The rotating gear assembly includes a clutch gear, an output gear and a plurality of transmission gears, and the clutch gear, the output gear and each of the transmission gears are rotatably arranged on the bracket; The rotating motor is drivingly connected to the transmission gear, each of the transmission gears is meshed in sequence, the clutch gear is respectively meshed with the transmission gear and the output gear, and the output gear is meshed with the gear ring.

4. The rotary arm of the toy excavator according to claim 3, wherein The clutch gear includes a support shaft, a first gear, a second gear and an elastic member. The support shaft is arranged on the bracket, the first gear, the second gear and the elastic member are all sleeved on the support shaft, the elastic member abuts against the first gear, and the elastic member provides a force to drive the first gear to slide along the support shaft and approach the second gear, so that the first gear and the second gear are detachably drivingly connected; The first gear is meshed with the transmission gear, and the second gear is meshed with the output gear.

5. The rotary arm of the toy excavator according to claim 3 or 4, characterized in that, A limiting protrusion is arranged on the gear ring, and a limiting edge is arranged on the mounting base, and the limiting protrusion abuts against the limiting edge under the drive of the gear ring.

6. The rotating arm of the toy excavator according to claim 5, wherein A avoiding groove is arranged on the mounting base, the bracket is arranged in the avoiding groove, and the tooling base is rotatably arranged in the avoiding groove.

7. The rotating arm of the toy excavator according to claim 6, characterized in that, The tooling base is provided with a rotating ring groove along the circumferential direction. The rotating mechanism further includes a positioning block, the positioning block is detachably assembled on the mounting base, the positioning block is inserted into the rotating ring groove, and the positioning block can slide along the rotating ring groove.

8. The rotary arm of the toy excavator according to claim 7, characterized in that, The tooling base is provided with an annular flange, and the circumferential side wall of the gear ring and the annular flange jointly define the rotating ring groove.

9. The rotating arm of the toy excavator according to claim 1, characterized in that The tooling base is provided with a buckle, and a clamping hole is arranged on the gear ring, and the buckle is clamped in the clamping hole.

10. A toy excavator, characterized in that, The toy excavator includes the toy excavator rotating arm according to any one of claims 1 to 9. A support pin connection position and a movable pin connection position are arranged on the mounting base. The support pin connection position is rotatably connected to the toy digging arm, and a telescopic cylinder is arranged on the toy digging arm. The telescopic cylinder is connected to the movable pin connection position.

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