CN213643103U - Toy excavator - Google Patents

Abstract

The utility model discloses a toy excavator, which comprises an excavator controller, an excavator base, a cab and an excavating arm, wherein the cab is rotatably arranged on the excavator base; a cab rotation driving device is arranged in the cab, a movable arm swing driving device is arranged at the lower end of the movable arm, an arm swing driving device is arranged at the upper end of the movable arm, and a bucket swing driving device is arranged in the arm; and signal input ends of the cab rotation driving device, the movable arm swing driving device, the bucket rod swing driving device and the bucket swing driving device are respectively and electrically connected with corresponding signal output ends of the excavator controller. The toy excavator can simulate an actual engineering mechanical excavator, and each part of a cab and an excavating arm can perform independent movement, so that the simulation degree is high.

Description

Toy excavator

Technical Field

The utility model relates to a toy field, in particular to toy excavator.

Background

The existing toy excavator is popular with children due to appearance simulation, and in order to have higher simulation degree, the toy excavator capable of simulating the actual engineering machinery excavator to carry out excavating arm action appears. However, most of the toy excavators sold in the daily market integrate all components of the excavating arm, the excavating arm can only realize simple overall swinging motion, the movable arm, the bucket rod and the bucket on the excavating arm can not realize independent motion, and can not realize independent rotation of the cab, the motion of the excavator is greatly different from that of an actual engineering mechanical excavator, and the simulation degree is insufficient.

Disclosure of Invention

The utility model aims to solve the technical problem that a toy excavator is provided, this kind of toy excavator can imitate actual engineering machine tool excavator, and each part of driver's cabin and digging arm can carry out solitary activity, and its emulation degree is high.

In order to solve the technical problems, the technical scheme is as follows:

the utility model provides a toy excavator, includes excavator controller, excavator base, driver's cabin and digging arm, and the driver's cabin is rotatable to be installed on the excavator base, is equipped with running gear on the excavator base, its characterized in that: the excavator base, the cab, the movable arm and the bucket rod are all provided with inner cavities; a cab rotation driving device capable of driving the cab to rotate is arranged in an inner cavity of the cab, a movable arm swing driving device capable of driving the movable arm to swing around the lower end of the movable arm inner cavity is arranged at the lower end of the movable arm inner cavity, an arm swing driving device capable of driving the arm to swing around the rear end of the arm swing driving device is arranged at the upper end of the movable arm inner cavity, and a bucket swing driving device capable of driving the bucket to swing around the upper end of the arm swing driving device is arranged in the inner cavity of the; and signal input ends of the cab rotation driving device, the movable arm swing driving device, the bucket rod swing driving device and the bucket swing driving device are respectively and electrically connected with corresponding signal output ends of the excavator controller.

In the toy excavator, when the cab needs to be driven to act, the cab rotation driving device can be controlled to drive the cab to rotate; when the movable arm needs to be driven to move, the movable arm swing driving device can be controlled to drive the movable arm to swing around the lower end of the movable arm, and the action of lifting or putting down the movable arm is finished; when the bucket rod needs to be driven to act, the bucket rod swinging driving device can be controlled to drive the bucket rod to swing around the rear end of the bucket rod, and the action of lifting or putting down the bucket rod is finished; when the bucket needs to be driven to move, the bucket swinging driving device can be controlled to drive the bucket to swing around the upper end of the bucket, and the digging movement of the bucket is completed. According to the toy excavator, the plurality of driving devices are arranged to drive all parts on the toy excavator body, so that various actions of the actual engineering mechanical excavator are simulated, and meanwhile, all the driving devices are hidden in inner cavities of all the parts respectively, and the simulation degree of the appearance of the toy excavator is guaranteed.

Typically, the excavator controls are mounted in the interior cavity of the excavator base or cab.

In a preferable scheme, a first contact block is arranged on the front side wall of the lower end of the movable arm, a second contact block is arranged on the rear side wall of the lower end of the movable arm, the toy excavator further comprises a first travel switch and a second travel switch, the first travel switch and the second travel switch are respectively installed on a cab, a contact of the first travel switch corresponds to the position of the first contact block, and a contact of the second travel switch corresponds to the position of the second contact block; the signal output ends of the first travel switch and the second travel switch are respectively and electrically connected with the corresponding signal input ends of the excavator controller. When the movable arm swing driving device drives the movable arm to swing forwards gradually, the first contact block on the front side wall of the lower end of the movable arm rotates gradually from front to back, after the movable arm swings forwards for a certain angle, the first contact block is in contact with a contact of a first travel switch, at the moment, the first travel switch sends a signal to the excavator controller, and the excavator controller controls the movable arm swing driving device to stop acting, so that the movable arm stops swinging forwards continuously; when the movable arm swing driving device drives the movable arm to swing backwards gradually, the second contact block on the rear side wall of the lower end of the movable arm rotates gradually from front to back, after the movable arm swings backwards for a certain angle, the second contact block is in contact with a contact of a second travel switch, at the moment, the second travel switch sends a signal to the excavator controller, and the excavator controller controls the movable arm swing driving device to stop acting, so that the movable arm stops swinging backwards continuously. The swing range of the movable arm is limited by arranging the first travel switch and the second travel switch, so that the swing amplitude of the movable arm is closer to the swing amplitude of the movable arm in the actual engineering mechanical excavator, related components are effectively protected, the simulation degree of the toy excavator is further improved, and the service life of the toy excavator is prolonged.

In a preferable scheme, the toy excavator further comprises a remote controller and a signal receiver, wherein a signal transmitter is arranged in the remote controller, and the signal receiver is matched with the signal transmitter and is electrically connected with a corresponding signal input end of the excavator controller. The remote controller transmits a control signal, the signal receiver receives the control signal and transmits the control signal to the excavator controller, and the excavator controller receives the control signal and controls the cab rotation driving device, the movable arm swing driving device, the arm swing driving device and the bucket swing driving device to move according to the control signal, so that the cab, the movable arm, the arm and the bucket perform corresponding actions.

The signal transmitter can be a radio signal transmitter or an infrared transmitter, the signal receiver can be a radio signal receiver or an infrared receiver, and the excavator controller can be formed by a single chip microcomputer or a CPU.

In a preferable scheme, the cab rotation driving device comprises a cab rotation driving rotating shaft, a cab rotation driving transmission gear, a cab rotation driving motor and a cab rotation driving gear set, the cab rotation driving transmission gear is fixedly arranged on the cab rotation driving rotating shaft, the lower end of the cab rotation driving rotating shaft is fixedly arranged on the excavator base, the cab is rotatably arranged at the upper end of the cab rotation driving rotating shaft, and the cab rotation driving transmission gear is positioned in an inner cavity of the excavator base; the cab rotation driving motor and the cab rotation driving gear set are both arranged on the cab, an output shaft of the cab rotation driving motor is in transmission connection with a first-stage gear of the cab rotation driving gear set, a last-stage gear of the cab rotation driving gear set is meshed with the cab rotation driving transmission gear, a cab rotation driving clutch assembly is arranged in the cab rotation driving gear set and comprises a cab rotation driving clutch rotating shaft, a cab rotation driving clutch compression spring and two cab rotation driving clutch end face gears, the last-stage gear of the cab rotation driving gear set is fixedly arranged on the cab rotation driving clutch rotating shaft, one cab rotation driving gear in the cab rotation driving gear set can be vertically moved and is arranged on the cab rotation driving clutch rotating shaft, the cab rotation driving clutch compression spring is sleeved on the cab rotation driving clutch rotating shaft, one end of the cab rotation driving clutch compression spring is in contact with the cab rotation driving gear, the other end of the cab rotation driving clutch compression spring is in contact with a final-stage gear of the cab rotation driving gear set, one cab rotation driving clutch face gear is fixedly arranged on the cab rotation driving gear, the other cab rotation driving clutch face gear is fixedly arranged on the cab rotation driving clutch rotating shaft, and the two cab rotation driving clutch face gears are meshed; the signal input end of the cab rotation driving motor is electrically connected with the signal output end corresponding to the excavator controller. When the cab needs to be driven to act, the excavator controller controls the cab rotation driving motor to rotate, and the cab rotation driving motor drives the final stage gear of the cab rotation driving gear set to move along the circumferential direction of the cab rotation driving transmission gear, so that the cab rotates around the cab rotation driving rotating shaft; when all gears in the cab rotation driving gear set normally operate, the cab rotation driving gear coaxially arranged with the final-stage gear of the cab rotation driving gear set can smoothly drive the final-stage gear of the cab rotation driving gear set to rotate; when the final gear of the cab rotation driving gear set is blocked, the cab rotation driving clutch face gear fixedly mounted on the cab rotation driving clutch rotating shaft can rotate relative to the other cab rotation driving clutch face gear, and the cab rotation driving gear coaxially arranged with the final gear of the cab rotation driving gear set can move up and down along the cab rotation driving clutch rotating shaft under the combined action of the cab rotation driving clutch compression spring and the cab rotation driving clutch face gear.

In a preferred scheme, the movable arm swing driving device comprises a movable arm swing driving rotating shaft, a movable arm swing driving transmission gear, a movable arm swing driving motor and a movable arm swing driving gear set, wherein the lower end of a movable arm is rotatably mounted on the cab through the movable arm swing driving rotating shaft; the swing arm swing driving gear set is internally provided with a swing arm swing driving clutch assembly, the swing arm swing driving clutch assembly comprises a swing arm swing driving clutch compression spring and two swing arm swing driving clutch end face gears, the swing arm swing driving gear set is internally provided with two coaxial swing arm swing driving drive gears, the swing arm swing driving clutch compression spring is sleeved on the shaft, one end of the swing arm swing driving clutch compression spring is contacted with the inner cavity of the swing arm, the other end of the swing arm swing driving clutch compression spring is contacted with one of the swing arm swing driving gears, and the two swing arm swing driving clutch end face gears are respectively and fixedly connected with the two swing arm swing driving gears, the two movable arms swing to drive the clutch face gears to be meshed; and the signal input end of the movable arm swing driving motor is electrically connected with the corresponding signal output end of the excavator controller. When the movable arm needs to be driven to move, the excavator controller controls the movable arm swing driving motor to rotate, the movable arm swing driving motor drives the final-stage gear of the movable arm swing driving gear set to move along the circumferential direction of the movable arm swing driving transmission gear, and therefore the movable arm swings around the movable arm swing driving rotating shaft; when each gear in the movable arm swing driving gear set operates normally, the two movable arm swing driving end face gears which are meshed with each other can smoothly play a transmission role, so that the two movable arm swing driving gears which are coaxially arranged rotate coaxially; when the gear of the movable arm swing driving gear set is blocked, the movable arm swing driving gear which is not meshed with the first-stage gear of the movable arm swing driving gear set in the two coaxially arranged movable arm swing driving gears is blocked, at the moment, the movable arm swing driving gear which is meshed with the first-stage gear of the movable arm swing driving gear set still continues to rotate, the two movable arm swing driving clutch end face gears can relatively rotate under the action of the movable arm swing driving clutch compression spring, and the gear in the movable arm swing driving gear set can be effectively prevented from being damaged when being blocked by the arrangement of the movable arm swing driving clutch assembly, so that the service life of the toy excavator is prolonged.

In a preferred scheme, the bucket rod swinging driving device comprises a bucket rod swinging driving rotating shaft, a bucket rod swinging driving transmission gear, a bucket rod swinging driving motor and a bucket rod swinging driving gear set, wherein the rear end of the bucket rod is rotatably mounted at the upper end of the movable arm through the bucket rod swinging driving rotating shaft; the bucket rod swinging driving motor and the bucket rod swinging driving gear set are respectively arranged in the inner cavity of the movable arm, the output shaft of the bucket rod swinging driving motor is in transmission connection with the first-stage gear of the bucket rod swinging driving gear set, the last-stage gear of the bucket rod swinging driving gear set is meshed with the bucket rod swinging driving transmission gear, a bucket rod swinging driving clutch assembly is arranged in the bucket rod swinging driving gear set and comprises a bucket rod swinging driving clutch compression spring and two bucket rod swinging driving clutch end face gears, two coaxially arranged bucket rod swinging driving gear gears are also arranged in the bucket rod swinging driving gear set, the bucket rod swinging driving clutch compression spring is sleeved on the shaft, one end of the bucket rod swinging driving clutch compression spring is in contact with the inner cavity of the movable arm, the other end of the bucket rod swinging driving clutch compression spring is in contact with one of the bucket rod swinging driving gears, and the two bucket rod swinging driving clutch end face gears are respectively and fixedly connected with the two bucket rod swinging driving gears, the two bucket rods swing to drive the clutch face gears to be meshed; and the signal input end of the bucket rod swinging driving motor is electrically connected with the signal output end corresponding to the excavator controller. When the bucket rod needs to be driven to move, the excavator controller controls the bucket rod swinging driving motor to rotate, and the bucket rod swinging driving motor drives the bucket rod to swing through the bucket rod swinging driving gear set to drive the transmission gear to rotate, so that the bucket rod is driven to swing; when each gear in the bucket rod swinging drive gear set operates normally, the two bucket rod swinging drive end face gears which are meshed with each other can smoothly play a transmission role, so that the two coaxially arranged bucket rod swinging drive gears rotate coaxially; when the dead circumstances of gear card appears in dipper swing drive gear group, the dipper swing drive gear who does not mesh with the first gear of dipper swing drive gear group among two coaxial setting's dipper swing drive gear can block dead thereupon, dipper swing drive gear who meshes with the first gear of dipper swing drive gear group this moment still can continue to rotate, under the effect of dipper swing drive separation and reunion compression spring, can make two dipper swing drive separation and reunion face gear rotate relatively, through setting up dipper swing drive clutch assembly, can effectively avoid the gear among the dipper swing drive gear group to damage when blocking dead, the life of extension toy excavator.

In a further preferred scheme, the bucket rod swinging driving transmission gear is a semicircular gear. The bucket rod swinging transmission gear adopts a semicircular gear, and the swinging range of the bucket rod can be limited.

In a preferable scheme, the bucket swing driving device comprises a bucket four-bar linkage, a bucket swing driving motor and a bucket swing driving gear set, the bucket swing driving motor and the bucket swing driving gear set are respectively arranged in an inner cavity of the bucket rod, an output shaft of the bucket swing driving motor is in transmission connection with a first-stage gear of the bucket swing driving gear set, a last-stage gear of the bucket swing driving gear set is arranged at the front end of the inner cavity of the bucket rod, a bucket swing driving clutch assembly is arranged in the bucket swing driving gear set and comprises a bucket swing driving clutch compression spring and two bucket swing driving clutch end-face gears, two coaxially arranged bucket swing driving gears are further arranged in the bucket swing driving gear set, the bucket swing driving clutch compression spring is sleeved on the shaft, one end of the bucket swing driving clutch compression spring is in contact with the inner cavity of the bucket rod, The other end of the driving gear is contacted with one of the bucket swinging driving gears, the two bucket swinging driving clutch face gears are respectively and fixedly connected with the two bucket swinging driving gears, and the two bucket swinging driving clutch face gears are meshed; the bucket four-link mechanism comprises a first link rod, a second link rod and a connecting rod, wherein the rear end of the first link rod is fixedly connected with a final-stage gear of the bucket swing driving gear set, the first link rod extends out of the bucket rod from the inner cavity of the bucket rod, the front end of the first link rod is hinged with the rear end of the connecting rod, the second link rod is fixedly arranged on the bucket, the front end of the second link rod is hinged with the front end of the connecting rod, the rear end of the second link rod is hinged with the front end of the bucket rod, and the hinged point of the second link rod and the bucket rod is positioned in front of the connecting point of the first link rod and the bucket swing driving gear; and the signal input end of the bucket swinging driving motor is electrically connected with the corresponding signal output end of the excavator controller. When the bucket needs to be driven to move, the excavator controller controls the bucket swinging driving motor to rotate, the bucket swinging driving motor drives the bucket swinging driving gear to rotate through the bucket swinging driving gear set, the first link rod swings around the bucket swinging driving gear, the second link rod is driven to move through the connecting rod, the second link rod swings around the part of the second link rod connected with the bucket rod, and the bucket is driven to swing; when each gear in the bucket swinging driving gear set operates normally, the two bucket swinging driving face gears which are meshed with each other can smoothly play a transmission role, so that the two coaxially arranged bucket swinging driving gears rotate coaxially; when the gear of the bucket swing driving gear set is blocked, the bucket swing driving gear which is not meshed with the first-stage gear of the bucket swing driving gear set in the two coaxially arranged bucket swing driving gears can be blocked, the bucket swing driving gear which is meshed with the first-stage gear of the bucket swing driving gear set can still continue to rotate at the moment, the two bucket swing driving clutch face gears can rotate relatively under the action of the bucket swing driving clutch compression spring, and by arranging the bucket swing driving clutch assembly, the gear of the bucket swing driving gear set can be effectively prevented from being damaged when being blocked, and the service life of the toy excavator is prolonged.

In a further preferred embodiment, the second side link is integrally formed with the bucket.

Preferably, running gear is including setting up track driving motor and the track drive gear group in the excavator base to set up the track group respectively in the left and right sides of excavator base, the track group includes track, action wheel and follows the driving wheel, action wheel and follow the driving wheel set up both ends around the excavator base respectively, track driving motor is connected with the first gear drive of track drive gear group, the action wheel is connected with the last gear drive of track drive gear group, the track tensioning is on action wheel and follow driving wheel. More preferably, the crawler belt driving gear set is also provided with a crawler belt driving clutch assembly.

In a preferable scheme, the toy excavator further comprises a smoking simulation device, the smoking simulation device comprises an atomizer and a light source, the atomizer and the light source are respectively installed on the cab, the atomizing position of the atomizer corresponds to the irradiation position of the light source, and the signal input ends of the atomizer and the light source are respectively and electrically connected with the signal output ends corresponding to the excavator controller. The sprayer can be made into the shape of an engine of an excavator, the sprayer can adopt a high-frequency atomizer, the high-frequency atomizer sprays water into tiny water mist particles in a high-frequency vibration mode, and the sprayed water mist particles generate the effect of simulating engine smoking under the irradiation of a light source.

The beneficial effects of the utility model reside in that: the toy excavator can simulate an actual engineering mechanical excavator to respectively carry out independent activities of a cab, a movable arm, an arm and a bucket, and the simulation degree is high.

Drawings

FIG. 1 is a schematic structural view of a toy excavator according to an embodiment of the present invention;

fig. 2 is a schematic view of the internal structure of the cab in the embodiment of the present invention;

fig. 3 is a schematic view of an internal structure of an excavating arm according to an embodiment of the present invention;

fig. 4 is a schematic view of the internal structure of the part where the excavating arm is engaged with the cab in the embodiment of the present invention;

fig. 5 is a schematic structural diagram of the swing driving gear set of the movable arm, the swing driving gear set of the bucket rod, and the swing driving gear set of the bucket according to the embodiment of the present invention.

Detailed Description

The invention will be further described with reference to the following drawings and specific embodiments:

1-5, the toy excavator comprises an excavator controller (not visible in the figures), an excavator base 1, a cab 2, an excavating arm 3 and a smoke generation simulation device 4, wherein a traveling mechanism 101 is arranged on the excavator base 1, the cab 2 is rotatably mounted on the excavator base 1, the excavating arm 3 comprises a movable arm 301, a bucket rod 302 and a bucket 303, and the excavator base 1, the cab 2, the movable arm 301 and the bucket rod 302 are all provided with inner cavities; a cab rotation driving device 201 capable of driving the cab 2 to rotate is arranged in an inner cavity of the cab 2, the cab rotation driving device 201 comprises a cab rotation driving rotating shaft 2011, a cab rotation driving transmission gear 2012, a cab rotation driving motor 2013 and a cab rotation driving gear group 2014, the cab rotation driving transmission gear 2012 is fixedly arranged on the cab rotation driving rotating shaft 2011, the lower end of the cab rotation driving rotating shaft 2011 is fixedly arranged on the excavator base 1, the cab 2 is rotatably arranged at the upper end of the cab rotation driving rotating shaft 2011, and the cab rotation driving transmission gear 2012 is positioned in the inner cavity of the excavator base 1; the cab rotation driving motor 2013 and the cab rotation driving gear set 2014 are both arranged on the cab 2, the output shaft of the cab rotation driving motor 2013 is in transmission connection with the first-stage gear of the cab rotation driving gear set 2014, the last-stage gear of the cab rotation driving gear set 2014 is meshed with the cab rotation driving transmission gear 2012, a cab rotation driving clutch assembly 2014 is arranged in the cab rotation driving gear set 2014, the cab rotation driving clutch assembly 2014 comprises a cab rotation driving clutch rotating shaft 201411, a cab rotation driving clutch compression spring 201412 and two cab rotation driving clutch face gears 201413, the last-stage gear of the cab rotation driving gear set 2014 is fixedly arranged on the cab rotation driving clutch rotating shaft 201411, one cab rotation driving gear in the cab rotation driving gear set 2014 can be vertically moved and is arranged on the cab rotation driving clutch rotating shaft 201411, the cab rotation driving clutch compression spring 201412 is sleeved on the cab rotation driving clutch rotating shaft 201411, one end of the cab rotation driving clutch compression spring 201412 is in contact with the cab rotation driving gear, the other end of the cab rotation driving clutch compression spring 2014 is in contact with the final stage gear of the cab rotation driving gear group 2014, one cab rotation driving clutch face gear 201413 is fixedly arranged on the cab rotation driving gear, the other cab rotation driving clutch face gear 201413 is fixedly arranged on the cab rotation driving clutch rotating shaft 201411, and the two cab rotation driving clutch face gears 201413 are meshed with each other; a boom swing driving device 3011 capable of driving the boom 301 to swing around the lower end of the boom 301 is arranged at the lower end of the inner cavity of the boom 301, the boom swing driving device 3011 comprises a boom swing driving rotating shaft 30111, a boom swing driving transmission gear 30112, a boom swing driving motor 30113 and a boom swing driving gear set 30114, the lower end of the boom 301 is rotatably installed on the cab 2 through the boom swing driving rotating shaft 30111, the boom swing driving transmission gear 30112 is fixedly installed on the cab 2, and the boom swing driving transmission gear 30112 is overlapped with the axis of the boom swing driving rotating shaft 30111; a boom swing driving motor 30113 and a boom swing driving gear set 30114 are respectively disposed in an inner cavity of the boom 301, an output shaft of the boom swing driving motor 30113 is in transmission connection with a first-stage gear of the boom swing driving gear set 30114, a last-stage gear of the boom swing driving gear set 30114 is engaged with the boom swing driving transmission gear 30112, a boom swing driving clutch assembly 301141 is disposed in the boom swing driving gear set 30114, the boom swing driving clutch assembly 301141 includes a boom swing driving clutch compression spring 3011411 and two boom swing driving clutch end gears 3011412, two boom swing driving gears 301142 coaxially disposed in the boom swing driving gear set 30114 are further disposed, the boom swing driving clutch compression spring 3011411 is sleeved on the shaft, one end of the boom swing driving clutch compression spring 3011411 contacts with the inner cavity of the boom, and the other end contacts with one of the boom swing driving gears 301142, the two boom swing driving clutch face gears 3011412 are respectively and fixedly connected with the two boom swing driving gears 301142, and the two boom swing driving clutch face gears 3011412 are meshed with each other; the upper end of the inner cavity of the movable arm 301 is provided with a bucket rod swing driving device 3012 capable of driving the bucket rod 302 to swing around the rear end of the bucket rod, the bucket rod swing driving device 3012 comprises a bucket rod swing driving rotating shaft 30121, a bucket rod swing driving transmission gear 30122, a bucket rod swing driving motor 30123 and a bucket rod swing driving gear set 30124, the rear end of the bucket rod 302 is rotatably mounted at the upper end of the movable arm 301 through the bucket rod swing driving rotating shaft 30121, the bucket rod swing driving transmission gear 30122 is fixedly mounted on the bucket rod 302, and the axis of the bucket rod swing driving transmission gear 30122 is coincident with the axis of the bucket rod swing driving rotating shaft 30121; the bucket rod swing driving motor 30123 and the bucket rod swing driving gear set 30124 are respectively disposed in an inner cavity of the boom 301, an output shaft of the bucket rod swing driving motor 30123 is in transmission connection with a first-stage gear of the bucket rod swing driving gear set 30124, a last-stage gear of the bucket rod swing driving gear set 30124 is meshed with the bucket rod swing driving transmission gear 30122, a bucket rod swing driving clutch assembly 301241 is disposed in the bucket rod swing driving gear set 30124, the bucket rod swing driving clutch assembly 301241 comprises a bucket rod swing driving clutch compression spring 3012411 and two bucket rod swing driving clutch end face gears 3012412, two coaxially disposed bucket rod swing driving gears 301242 are further disposed in the bucket rod swing driving gear set 30124, the bucket rod swing driving clutch compression spring 3012411 is sleeved on the shaft, one end of the bucket rod swing driving clutch compression spring 3012411 is in contact with the inner cavity of the boom, and the other end of the bucket rod swing driving gear 301242 is in contact with one end of the bucket rod swing driving gear, the two arm swing driving clutch face gears 3012412 are respectively and fixedly connected with the two arm swing driving gears 301242, the two arm swing driving clutch face gears 3012412 are meshed with each other, and the arm swing driving transmission gear 30122 is a semicircular gear; a bucket swing driving device 3021 capable of driving the bucket 303 to swing around the upper end thereof is arranged in the inner cavity of the bucket rod 302; the bucket swinging driving device 3021 includes a bucket four-bar linkage 30211, a bucket swinging driving motor 30212 and a bucket swinging driving gear set 30213, the bucket swinging driving motor 30212 and the bucket swinging driving gear set 30213 are respectively disposed in the inner cavity of the arm 302, an output shaft of the bucket swinging driving motor 30212 is in transmission connection with a first-stage gear of the bucket swinging driving gear set 30213, a last-stage gear of the bucket swinging driving gear set 30213 is located at the front end of the inner cavity of the arm 302, a bucket swinging driving clutch assembly 302131 is disposed in the bucket swinging driving gear set 30213, the bucket swinging driving clutch assembly 302131 includes a bucket swinging driving clutch compression spring 3021311 and two bucket swinging driving clutch end gears 3021312, two coaxially disposed bucket swinging driving gears 302132 are further disposed in the bucket swinging driving gear set 30213, the bucket swinging driving clutch compression spring 3021311 is sleeved on the shaft, and one end of the bucket swinging driving clutch compression spring 3021311 contacts with the inner cavity of the arm, The other end of the driving gear is in contact with one of the bucket swinging driving gears 302132, the two bucket swinging driving clutch face gears 3021312 are fixedly connected with the two bucket swinging driving gears 302132 respectively, and the two bucket swinging driving clutch face gears 3021312 are meshed; the bucket four-bar linkage 30211 includes a first link lever 302111, a second link lever 302112 and a link 302113, a rear end of the first link lever 302111 is fixedly connected with a final-stage gear of the bucket swing driving gear set 30213, the first link lever 302111 protrudes from an inner cavity of the bucket lever 302 to the outside of the bucket lever 302, a front end of the first link lever 302111 is hinged to a rear end of the link 302113, the second link lever 302112 is integrally formed with the bucket 303, a front end of the second link lever 302112 is hinged to a front end of the link 302113, a rear end of the second link lever 302112 is hinged to a front end of the bucket lever 302, and a hinge point of the second link lever 302112 and the bucket lever 302 is located in front of a connection point of the first link lever 302111 and the bucket 303 swing driving gear; the smoke simulation device 4 includes an atomizer 401 and a light source 402, the atomizer 401 and the light source 402 are respectively mounted on the cab 2, the atomizing position of the atomizer 401 corresponds to the irradiation position of the light source 402, and signal input terminals of the cab rotation drive motor 2013, the boom swing drive motor 30113, the arm swing drive motor 30123, the bucket swing drive motor 30212, the atomizer 401, and the light source 402 are respectively electrically connected to signal output terminals corresponding to the excavator controller.

In the toy excavator, when the cab 2 needs to be driven to operate, the cab rotation driving device 201 can be controlled to drive the cab 2 to rotate; when the boom 301 needs to be driven to move, the boom swing driving device 3011 may be controlled to drive the boom 301 to swing around the lower end thereof, so as to complete the movement of raising or lowering the boom 301; when the arm 302 needs to be driven to move, the arm swing driving device 3012 can be controlled to drive the arm 302 to swing around the rear end of the arm, so as to complete the lifting or lowering movement of the arm 302; when the bucket 303 needs to be driven, the bucket swing driving device 3021 may be controlled to drive the bucket 303 to swing around the upper end thereof, thereby completing the excavation operation of the bucket 303. According to the toy excavator, the plurality of driving devices are arranged to drive all parts on the toy excavator body, so that various actions of the actual engineering mechanical excavator are simulated, and meanwhile, all the driving devices are hidden in inner cavities of all the parts respectively, and the simulation degree of the appearance of the toy excavator is guaranteed.

When the cab 2 needs to be driven to move, the excavator controller controls the cab rotation driving motor 2013 to rotate, and the cab rotation driving motor 2013 drives the final-stage gear of the cab rotation driving gear set 2014 to move along the circumferential direction of the cab rotation driving transmission gear 2012, so that the cab 2 rotates around the cab rotation driving rotation shaft 2011. When the boom 301 needs to be driven, the excavator controller controls the boom swing drive motor 30113 to rotate, and the boom swing drive motor 30113 drives the final-stage gear of the boom swing drive gear set 30114 to move in the circumferential direction of the boom swing drive transmission gear 30112, so that the boom 301 swings around the boom swing drive rotation shaft 30111. When the arm 302 needs to be driven to move, the excavator controller controls the arm swing driving motor 30123 to rotate, and the arm swing driving motor 30123 drives the arm swing driving transmission gear 30122 to rotate through the arm swing driving gear set 30124, so as to drive the arm 302 to swing. When the bucket 303 needs to be driven to move, the excavator controller controls the bucket swinging driving motor 30212 to rotate, the bucket swinging driving motor 30212 drives the bucket 303 swinging driving gear to rotate through the bucket swinging driving gear group 30213, so that the first link lever 302111 swings around the bucket 303 swinging driving gear, the second link lever 302112 is driven to move through the link 302113, the second link lever 302112 swings around the position where the second link lever 302112 is connected with the bucket lever 302, and the bucket 303 is driven to swing. The swing transmission gear of the arm 302 is a semicircular gear, and the swing range of the arm 302 can be limited. The sprayer 401 can be made into the shape of an engine of an excavator, and the sprayer 401 can adopt a high-frequency sprayer which sprays water into tiny water mist particles in a high-frequency vibration mode, so that the sprayed water mist particles generate the effect of simulating the smoke of the engine under the irradiation of the light source 402.

When each gear in the cab rotation driving gear set 2014 operates normally, the cab rotation driving gear coaxially arranged with the final gear of the cab rotation driving gear set 2014 can smoothly drive the final gear of the cab rotation driving gear set 2014 to rotate; when the final gear of the cab rotation driving gear set 2014 is jammed, the cab rotation driving clutch face gear 201413 fixedly arranged on the cab rotation driving clutch rotating shaft 201411 can rotate relative to the other cab rotation driving clutch face gear 201413, and the cab rotation driving gear coaxially arranged with the final gear of the cab rotation driving gear set 2014 can move up and down along the cab rotation driving clutch rotating shaft 201411 under the combined action of the cab rotation driving clutch compression spring 201411 and the cab rotation driving clutch face gear 201413, so that the gears in the cab rotation driving gear set 2014 can be effectively prevented from being damaged when the gears are jammed by arranging the cab rotation driving clutch assembly 20141; when each gear in the boom swing driving gear set 30114 operates normally, the two boom swing driving face gears meshed with each other can smoothly perform a transmission function, so that the two boom swing driving gears 301142 arranged coaxially rotate coaxially; when the gear of the boom swing driving gear set 30114 is stuck, the boom swing driving gear 301142, which is not meshed with the first-stage gear of the boom swing driving gear set 30114, of the two boom swing driving gears 301142 coaxially arranged is stuck, at this time, the boom swing driving gear 301142, which is meshed with the first-stage gear of the boom swing driving gear set 30114, still continues to rotate, and under the action of the boom swing driving clutch compression spring 3011411, the two boom swing driving clutch face gears 3011412 are relatively rotated, and by arranging the boom swing driving clutch assembly 301141, the gear of the boom swing driving gear set 30114 can be effectively prevented from being damaged when being stuck; when each gear in the bucket rod swinging driving gear set 30124 operates normally, the two bucket rod swinging driving face gears which are meshed with each other can smoothly perform a transmission function, so that the two coaxially arranged bucket rod swinging driving gears 301242 rotate coaxially; when the gear of the arm swing driving gear set 30124 is stuck, the arm swing driving gear 301242 of the two coaxially disposed arm swing driving gears 301242 that is not engaged with the first gear of the arm swing driving gear set 30124 is stuck, at this time, the arm swing driving gear 301242 that is engaged with the first gear of the arm swing driving gear set 30124 is still rotated, under the action of the arm swing driving clutch compression spring 3012411, the two arm swing driving clutch face gears 3012412 can rotate relatively, by arranging the arm swing driving clutch assembly 301241, damage to gears in the arm swing driving gear set 30124 when the gears in the bucket swing driving gear set 30213 are running normally can be effectively avoided, the two meshed bucket swinging driving face gears can smoothly play a transmission role, so that the two coaxially arranged bucket swinging driving gears 302132 coaxially rotate; when the gear of the bucket swing driving gear group 30213 is stuck, the bucket swing driving gear 302132 of the two coaxially disposed bucket swing driving gears 302132, which is not engaged with the first-stage gear of the bucket swing driving gear group 30213, is stuck, at this time, the bucket swing driving gear 302132 engaged with the first-stage gear of the bucket swing driving gear group 30213 still continues to rotate, under the action of the bucket swing driving clutch compression spring 3021311, the two bucket swing driving clutch face gears 3021312 can rotate relatively, and by providing the bucket swing driving clutch assembly 302131, the gear of the bucket swing driving gear group 30213 can be effectively prevented from being damaged when being stuck, and the service life of the toy excavator can be prolonged.

The excavator controller is mounted in the inner cavity of the excavator base 1. The excavator controller adopts a single chip microcomputer.

The toy excavator further comprises a first travel switch 5 and a second travel switch 6, wherein the first travel switch 5 and the second travel switch 6 are respectively installed on the cab 2, a contact of the first travel switch 5 corresponds to the position of the first contact block 3013, and a contact of the second travel switch 6 corresponds to the position of the second contact block 3014; the signal output ends of the first travel switch 5 and the second travel switch 6 are respectively and electrically connected with the corresponding signal input ends of the excavator controller. When the swing arm driving device 3011 drives the swing arm 301 to swing forward gradually, the first contact block 3013 on the front side wall of the lower end of the swing arm 301 rotates gradually from front to back, after the swing arm 301 swings forward by a certain angle, the first contact block 3013 contacts with a contact of the first travel switch 5, at this time, the first travel switch 5 sends a signal to the excavator controller, and the excavator controller controls the swing arm driving device 3011 to stop moving, so that the swing arm 301 stops swinging forward; when the boom swing driving device 3011 drives the boom 301 to swing back gradually, the second contact block 3014 located on the back side wall of the lower end of the boom 301 rotates back and forth gradually, after the boom 301 swings back by a certain angle, the second contact block 3014 contacts with the contact point of the second travel switch 6, at this time, the second travel switch 6 sends a signal to the excavator controller, and the excavator controller controls the boom swing driving device 3011 to stop, so that the boom 301 stops swinging back continuously. The swing range of the boom 301 is limited by providing the first travel switch 5 and the second travel switch 6, so that the swing amplitude of the boom 301 is closer to the swing amplitude of the boom 301 in an actual construction machine excavator, and the simulation degree of the toy excavator is further improved.

Claims (10)

1. The utility model provides a toy excavator, includes excavator controller, excavator base, driver's cabin and digging arm, and the driver's cabin is rotatable to be installed on the excavator base, is equipped with running gear on the excavator base, its characterized in that: the excavator base, the cab, the movable arm and the bucket rod are all provided with inner cavities; a cab rotation driving device capable of driving the cab to rotate is arranged in an inner cavity of the cab, a movable arm swing driving device capable of driving the movable arm to swing around the lower end of the movable arm inner cavity is arranged at the lower end of the movable arm inner cavity, an arm swing driving device capable of driving the arm to swing around the rear end of the arm swing driving device is arranged at the upper end of the movable arm inner cavity, and a bucket swing driving device capable of driving the bucket to swing around the upper end of the arm swing driving device is arranged in the inner cavity of the; and signal input ends of the cab rotation driving device, the movable arm swing driving device, the bucket rod swing driving device and the bucket swing driving device are respectively and electrically connected with corresponding signal output ends of the excavator controller.

2. The toy shovel of claim 1, wherein: the toy excavator further comprises a first travel switch and a second travel switch, the first travel switch and the second travel switch are respectively mounted on the cab, a contact of the first travel switch corresponds to the position of the first contact block, and a contact of the second travel switch corresponds to the position of the second contact block; the signal output ends of the first travel switch and the second travel switch are respectively and electrically connected with the corresponding signal input ends of the excavator controller.

3. The toy shovel of claim 1, wherein: the toy excavator further comprises a remote controller and a signal receiver, wherein a signal transmitter is arranged in the remote controller, and the signal receiver is matched with the signal transmitter and is electrically connected with a corresponding signal input end of the excavator controller.

4. The toy shovel of claim 1, wherein: the cab rotation driving device comprises a cab rotation driving rotating shaft, a cab rotation driving transmission gear, a cab rotation driving motor and a cab rotation driving gear set, the cab rotation driving transmission gear is fixedly arranged on the cab rotation driving rotating shaft, the lower end of the cab rotation driving rotating shaft is fixedly arranged on the excavator base, the cab is rotatably arranged at the upper end of the cab rotation driving rotating shaft, and the cab rotation driving transmission gear is positioned in the inner cavity of the excavator base; the cab rotation driving motor and the cab rotation driving gear set are both arranged on the cab, an output shaft of the cab rotation driving motor is in transmission connection with a first-stage gear of the cab rotation driving gear set, a last-stage gear of the cab rotation driving gear set is meshed with the cab rotation driving transmission gear, a cab rotation driving clutch assembly is arranged in the cab rotation driving gear set and comprises a cab rotation driving clutch rotating shaft, a cab rotation driving clutch compression spring and two cab rotation driving clutch end face gears, the last-stage gear of the cab rotation driving gear set is fixedly arranged on the cab rotation driving clutch rotating shaft, one cab rotation driving gear in the cab rotation driving gear set can be vertically moved and is arranged on the cab rotation driving clutch rotating shaft, the cab rotation driving clutch compression spring is sleeved on the cab rotation driving clutch rotating shaft, one end of the cab rotation driving clutch compression spring is in contact with the cab rotation driving gear, the other end of the cab rotation driving clutch compression spring is in contact with a final-stage gear of the cab rotation driving gear set, one cab rotation driving clutch face gear is fixedly arranged on the cab rotation driving gear, the other cab rotation driving clutch face gear is fixedly arranged on the cab rotation driving clutch rotating shaft, and the two cab rotation driving clutch face gears are meshed; the signal input end of the cab rotation driving motor is electrically connected with the signal output end corresponding to the excavator controller.

5. The toy shovel of claim 1, wherein: the movable arm swing driving device comprises a movable arm swing driving rotating shaft, a movable arm swing driving transmission gear, a movable arm swing driving motor and a movable arm swing driving gear set, the lower end of a movable arm is rotatably installed on the cab through the movable arm swing driving rotating shaft, the movable arm swing driving transmission gear is fixedly installed on the cab, and the movable arm swing driving transmission gear is overlapped with the axis of the movable arm swing driving rotating shaft; the swing arm swing driving gear set is internally provided with a swing arm swing driving clutch assembly, the swing arm swing driving clutch assembly comprises a swing arm swing driving clutch compression spring and two swing arm swing driving clutch end face gears, the swing arm swing driving gear set is internally provided with two coaxial swing arm swing driving drive gears, the swing arm swing driving clutch compression spring is sleeved on the shaft, one end of the swing arm swing driving clutch compression spring is contacted with the inner cavity of the swing arm, the other end of the swing arm swing driving clutch compression spring is contacted with one of the swing arm swing driving gears, and the two swing arm swing driving clutch end face gears are respectively and fixedly connected with the two swing arm swing driving gears, the two movable arms swing to drive the clutch face gears to be meshed; and the signal input end of the movable arm swing driving motor is electrically connected with the corresponding signal output end of the excavator controller.

6. The toy shovel of claim 1, wherein: the bucket rod swinging driving device comprises a bucket rod swinging driving rotating shaft, a bucket rod swinging driving transmission gear, a bucket rod swinging driving motor and a bucket rod swinging driving gear set, the rear end of the bucket rod is rotatably installed at the upper end of the movable arm through the bucket rod swinging driving rotating shaft, the bucket rod swinging driving transmission gear is fixedly installed on the bucket rod, and the axis of the bucket rod swinging driving transmission gear is coincided with the axis of the bucket rod swinging driving rotating shaft; the bucket rod swinging driving motor and the bucket rod swinging driving gear set are respectively arranged in the inner cavity of the movable arm, the output shaft of the bucket rod swinging driving motor is in transmission connection with the first-stage gear of the bucket rod swinging driving gear set, the last-stage gear of the bucket rod swinging driving gear set is meshed with the bucket rod swinging driving transmission gear, a bucket rod swinging driving clutch assembly is arranged in the bucket rod swinging driving gear set and comprises a bucket rod swinging driving clutch compression spring and two bucket rod swinging driving clutch end face gears, two coaxially arranged bucket rod swinging driving gear gears are also arranged in the bucket rod swinging driving gear set, the bucket rod swinging driving clutch compression spring is sleeved on the shaft, one end of the bucket rod swinging driving clutch compression spring is in contact with the inner cavity of the movable arm, the other end of the bucket rod swinging driving clutch compression spring is in contact with one of the bucket rod swinging driving gears, and the two bucket rod swinging driving clutch end face gears are respectively and fixedly connected with the two bucket rod swinging driving gears, the two bucket rods swing to drive the clutch face gears to be meshed; and the signal input end of the bucket rod swinging driving motor is electrically connected with the signal output end corresponding to the excavator controller.

7. The toy shovel of claim 6, wherein: the bucket rod swings to drive the transmission gear to be a semicircular gear.

8. The toy shovel of claim 1, wherein: the bucket swing driving device comprises a bucket four-bar mechanism, a bucket swing driving motor and a bucket swing driving gear set, the bucket swing driving motor and the bucket swing driving gear set are respectively arranged in an inner cavity of the bucket rod, an output shaft of the bucket swing driving motor is in transmission connection with a first-stage gear of the bucket swing driving gear set, a last-stage gear of the bucket swing driving gear set is located at the front end of the inner cavity of the bucket rod, a bucket swing driving clutch assembly is arranged in the bucket swing driving gear set and comprises a bucket swing driving clutch compression spring and two bucket swing driving clutch end face gears, two coaxially arranged bucket swing driving gears are further arranged in the bucket swing driving gear set, the bucket swing driving clutch compression spring is sleeved on the shaft, one end of the bucket swing driving clutch compression spring is in contact with the inner cavity of the bucket rod, The other end of the driving gear is contacted with one of the bucket swinging driving gears, the two bucket swinging driving clutch face gears are respectively and fixedly connected with the two bucket swinging driving gears, and the two bucket swinging driving clutch face gears are meshed; the bucket four-link mechanism comprises a first link rod, a second link rod and a connecting rod, wherein the rear end of the first link rod is fixedly connected with a final-stage gear of the bucket swing driving gear set, the first link rod extends out of the bucket rod from the inner cavity of the bucket rod, the front end of the first link rod is hinged with the rear end of the connecting rod, the second link rod is fixedly arranged on the bucket, the front end of the second link rod is hinged with the front end of the connecting rod, the rear end of the second link rod is hinged with the front end of the bucket rod, and the hinged point of the second link rod and the bucket rod is positioned in front of the connecting point of the first link rod and the bucket swing driving gear; and the signal input end of the bucket swinging driving motor is electrically connected with the corresponding signal output end of the excavator controller.

9. The toy shovel of claim 8, wherein: the second side link is integrally formed with the bucket.

10. The toy shovel of claim 1, wherein: the toy excavator further comprises a smoking simulation device, the smoking simulation device comprises an atomizer and a light source, the atomizer and the light source are respectively installed on the cab, the atomizing position of the atomizer corresponds to the irradiation position of the light source, and the signal input ends of the atomizer and the light source are respectively electrically connected with the signal output end corresponding to the excavator controller.

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