Abrégé

Prior-art tamping devices for tracks have had problems in that the rotating shaft of an engine and the rotating shaft of a vibration-generating section are directly linked, and vibration from the vibration-generating section is readily transmitted to the engine.　This vibration compaction device 10 comprises a linking mechanism 14 that links a motive power section 11 and a vibration section 13, and the linking mechanism 14 has a first shaft joint section 26 to which a drive transmission section 21 of the motive power section 11 is mounted, a second shaft joint section 27 to which a drive transmission section 30 of the vibration section 13 is mounted, and a linking member 28 that links the first shaft joint section 26 and the second shaft joint section 27. Due to this structure, the drive transmission section 21 and the drive transmission section 30 are not directly linked, vibration generated in the vibration section 13 is not readily transmitted to the motive power section 11, and the motive power section 11 is driven in a stable state, whereby damage to the components of the motive power section 11 and decrease in life span are prevented.

Classes IPC  ?

• E01B 27/16 - Machines à cet usage, p. ex. machines dites à bourrer les traverses

Abrégé

[Problem] To provide an elongating/contracting work machine that is able to reliably and easily affix a shaft unit. [Solution] The elongating/contracting work machine is provided with: a rotating drive unit; a work unit; a shaft unit that couples the rotating drive unit and the work unit, transmits rotary force to the work unit, and can elongate/contract; and a slide holder. The shaft unit has a tube body that can elongate and contract, the tube body is provided with an outer tube and an inner tube that can move within the outer tube, the slide holder comprises a large diameter section affixed to the outer tube and a small diameter section into which the inner tube is inserted, two each of a first protrusion and second protrusion that oppose each other sandwiching a first slit are provided to the surface of the small diameter section sandwiching a second slit, a bolt having a knob at the end is inserted into the first protrusion and is screw-threaded to the second protrusion, the diameter of the small diameter section shrinks, affixing the inner tube when the bolt is tightened by means of the knob, and the diameter of the small diameter section expands, releasing the affixing of the inner tube when the bolt is loosened by means of the knob.

Classes IPC  ?

• A01G 3/08 - Autres outils à élaguer, émonder ou ébrancher des arbres sur pied
• A01G 3/025 - SécateursCisailles pour fleurs ou fruits avec des poignées allongées ou prolongées
• F16B 7/14 - Systèmes télescopiques verrouillés dans des positions intermédiaires

Abrégé

An extendible working machine has a rotation/drive section, a working section, and a rod section which connects the rotation/drive section and the working section, transmits rotational force to the working section, and can be extended and retracted. The rod section has a tube body which can be extended and retracted, and also has a shaft body which extends in the axial direction within the tube body and which can be extended and retracted together with the tube body. The shaft body has a pipe shaft which is supported within the inner tube in a rotatable manner. Helical grooves are formed in the surface of the drive shaft. The drive shaft is connected to the pipe shaft so the pipe shaft can move in the axial direction along the outer surface of the drive shaft and so the rotation of the drive shaft is transmitted to the pipe shaft.

Classes IPC  ?

• F16C 3/035 - ArbresManivelles télescopiques avec paliers incorporés
• A01G 3/033 - SécateursCisailles pour fleurs ou fruits avec des lames entraînées par un moteur
• A01D 34/90 - FaucheusesAppareils de fauchage des moissonneuses spécialement adaptés à des usages particuliers destinés à être portés par l'opérateur
• F16D 3/06 - Accouplements extensibles, c.-à-d. avec moyens permettant le mouvement entre parties accouplées durant leur entraînement adaptés à des fonctions particulières spécialement adaptés pour permettre un déplacement axial
• A01G 3/08 - Autres outils à élaguer, émonder ou ébrancher des arbres sur pied

Abrégé

[Problem] To provide an extendible working machine which is lightweight and which has a rod section capable of being extended longer. [Solution] An extendible working machine is provided with a rotation/drive section, a working section, and a rod section which connects the rotation/drive section and the working section, transmits rotational force to the working section, and can be extended and retracted. The rod section is provided with a tube body which can be extended and retracted, and also with a shaft body which extends in the axial direction within the tube body and which can be extended and retracted together with the tube body. The tube body is provided with an outer tube and with an inner tube which can move within the outer tube. The shaft body is provided with a drive shaft which is supported within the outer tube by bearings in a rotatable manner, and also with a pipe shaft which is supported within the inner tube in a rotatable manner. Helical grooves are formed in the surface of the drive shaft, and the drive shaft is connected to the pipe shaft such that the pipe shaft can move in the axial direction along the outer surface of the drive shaft and such that the rotation of the drive shaft is transmitted to the pipe shaft.

Classes IPC  ?

• F16D 3/06 - Accouplements extensibles, c.-à-d. avec moyens permettant le mouvement entre parties accouplées durant leur entraînement adaptés à des fonctions particulières spécialement adaptés pour permettre un déplacement axial
• A01D 46/24 - Dispositifs pour la cueillette des pommes ou de fruits similaires
• A01G 3/033 - SécateursCisailles pour fleurs ou fruits avec des lames entraînées par un moteur

Abrégé

Disclosed is a brushcutter (10) worn on the shoulder comprising a brushcutter main body (100) and a shoulder band (5) wherein the brushcutter main body (100) comprises a rotation drive unit (1) for generating a rotational force, an operation unit (2) for performing cutting operations by means of a cutting blade (21) spun by the rotational force, a rod unit (3) for connecting the rotation drive unit (1) and the operation unit (2) and transmitting the rotational force generated in the rotation drive unit (1) to the operation unit (2), and a handle (4) fixed to the rod unit (3). From the center of gravity of the brushcutter main body (100), the shoulder band (5) is attached to the rod unit (3) at a position towards the rotation drive unit (1). The portion (30A) of the rod unit (3) from the attachment position of the shoulder band (5) towards the rotation drive unit (1) is curved in one direction, and the aforementioned one direction is downwards in the vertical plane (300) that contains the rod unit (3) and the rotation shaft of the cutting blade (21) in a state in which the brushcutter main body (100) has been hung over the shoulder so as to allow operation.

Classes IPC  ?

• A01D 34/68 - FaucheusesAppareils de fauchage des moissonneuses caractérisés par des particularités relatives au type d'appareil de coupe comportant des couteaux rotatifs comportant des couteaux tournant autour d'un axe vertical dirigés à la main par un opérateur à pied à couteaux ou à roues entraînés par un moteur
• F16C 1/02 - Arbres flexiblesMoyens mécaniques pour transmettre un mouvement dans une gaine flexible pour transmettre un mouvement de rotation
• F16C 17/00 - Paliers à contact lisse pour mouvement de rotation exclusivement