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Light rack transmission telescopic arm
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A technology of rack drive and telescopic arm, applied in the field of telescopic arm, can solve the problems of high cost, complex telescopic arm structure, and large telescopic stroke range
Active Publication Date: 2019-01-11
GUANGDONG POWER GRID CO LTD +1
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[0006] This application provides a lightweight rack-driven telescopic arm, which has a simple structure, small size, a large telescopic stroke range, light weight, and can be bidirectionally driven in the telescopic direction to solve the problem of complex structure, high cost, and heavy weight of traditional telescopic arms. and the problem of not shrinking
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Embodiment 1
[0044] see figure 1 , the first embodiment of a light-weight rack drive telescopic arm provided by the present application, including: a first-stage arm 1, a final-stage arm 3, a first-stage arm cable 6, a final-stage arm cable 5 and a drive drum 4;
[0045] The main body of the arm body of the first stage arm 1 is a hollow tubular structure (it can be hollowed out in the middle of the cylinder), and the end of the first stage arm 1 is installed with the first stage arm double drum gear 11 (generally installed at the end and is the first stage arm 1 outside);
[0046] The last-stage arm 3 is set inside the first-stage arm 1 and passes through the end of the first-stage arm 1, and can slide bidirectionally along the arm length direction of the telescopic arm (ie figure 1 in the left and right directions);
[0047] The last-stage arm rack 33 is installed on the final-stage arm 3 and meshes with the first-stage arm double drum gear 11;
[0048]One end of the first-stage arm c...
Embodiment 2
[0067] see figure 2 , the second embodiment of a lightweight rack drive telescopic arm provided by the present application, including: the first stage arm 1, the final stage arm 3, the first stage arm cable 6, the final stage arm cable 5 and the drive drum 4;
[0068] The main body of the arm body of the first stage arm 1 is a hollow tubular structure (it can be hollowed out in the middle of the cylinder), and the end of the first stage arm 1 is installed with the first stage arm double drum gear 11 (generally installed at the end and is the first stage arm 1 outside);
[0069] The final arm 3 is sleeved inside the intermediate arm 2 and passes through the end of the intermediate arm 2, and can slide bidirectionally along the arm length direction of the telescopic arm (ie figure 2 middle left direction);
[0070] The final arm rack 33 meshed with the intermediate arm double drum gear 21 is installed on the final arm 3;
[0071] One end of the first-stage arm cable 6 is w...
Embodiment 3
[0101] see image 3 , the third embodiment of a lightweight rack drive telescopic arm provided by the present application, including: the first stage arm 1, the final stage arm 3, the first stage arm cable 6, the final stage arm cable 5 and the drive drum 4;
[0102] The main body of the arm body of the first stage arm 1 is a hollow tubular structure (it can be hollowed out in the middle of the cylinder), and the end of the first stage arm 1 is installed with the first stage arm double drum gear 11 (generally installed at the end and is the first stage arm 1 outside);
[0103] The final arm 3 is set inside the intermediate arm 2 and passes through the end of the intermediate arm 2 (specifically, the last intermediate arm 2), and can slide in both directions along the arm length direction of the telescopic arm (ie image 3 middle left direction);
[0104] The final arm 3 is equipped with a final arm rack 33 meshing with the intermediate arm double reel gear 21 (specifically ...
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Abstract
The invention provides a light rack transmission telescopic arm. A first-stage arm double-reel gear is mounted at the tail end of a first-stage arm, and a last-stage arm is sleeved with the first-stage arm and can bi-directionally slide in the arm length direction of the telescopic arm. A last-stage arm rack engaged with the first-stage arm double-reel gear is mounted on the last-stage arm. A first-stage arm inhaul cable is wound around the first-stage arm double-reel gear to drive the first-stage arm double-reel gear to rotate. A last-stage arm inhaul cable is connected with the last-stage arm to pull the last-stage arm to retract to the original position. A driving reel pulls the first-stage arm inhaul cable to drive corresponding gears and racks to move to expand the last-stage arm, thedriving reel pulls the last-stage arm inhaul cable to retract the last-stage arm, thus expanding and retracting of the telescopic arm are achieved; and the structure is simple, the shape size is small, the expanding and retracting stroke range is large, the self-weight is low, and the expanding and retracting directions can achieve bi-directional driving bearing, so that the problems that a traditional telescopic arm is complex in structure, high in cost and large in self-weight and cannot expand and retract are solved.
Description
technical field [0001] The present application relates to the technical field of telescopic arms, in particular to a lightweight rack-driven telescopic arm. Background technique [0002] A telescopic arm usually refers to a working device composed of a fixed arm, a movable arm and a telescopic drive mechanism. working distance. [0003] At present, the most commonly used telescopic arm at home and abroad is the vehicle-mounted telescopic arm of the crane. This type of telescopic arm has to carry the lifting load laterally due to its cantilever structure. In order to strengthen the flexural strength of the arm body, its own weight and overall size are usually larger; Correspondingly, in order to drive the moving arm with a large dead weight, a driving mechanism with a large volume and weight is usually used, such as: a high-power motor, a hydraulic pump with rack drive, hydraulic drive, chain drive and combined drive, etc.; therefore, this The similar telescopic boom has th...
Claims
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Application Information
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