Hydraulic preload device
A pre-tightening force and power device technology, applied in metal processing, metal processing equipment, manufacturing tools, etc., to achieve the effect of strong usability, avoiding insufficient torque, and avoiding damage to the pre-tightening force device
Active Publication Date: 2017-10-13
GUODIAN UNITED POWER TECH
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is: to overcome the above problems, to provide a hydraulic pre-tightening force that can effectively avoid the problem of insufficient torque force caused by human factors, and can also effectively avoid the problem of damage to the pre-tightening force device due to excessive torque force device
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[0014] The present invention will now be described in further detail in conjunction with the accompanying drawings, which are simplified schematic diagrams, only schematically illustrating the basic structure of the present invention, and therefore only show the configurations related to the present invention.
[0015] Such as figure 1 The preferred embodiment of the shown hydraulic preload device of the present invention comprises a hydraulic cylinder liner 1, a preload sleeve 8 is arranged in the hydraulic cylinder liner 1, a piston 7 is installed on the preload sleeve 8, and the piston 7 is mounted on two sides. Both ends traverse the pre-tightening sleeve 8 to connect with the hydraulic cylinder liner 1, the hydraulic cylinder liner 1 and the pre-tightening sleeve 8 are located on a hydraulic cylinder block 3, and there is a hydraulic chamber 2 inside the hydraulic cylinder block 3. A power device 4 is installed in the cavity 2, and power transmission bushings 5 are prov...
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The invention discloses a hydraulic pretightening force device which comprises a hydraulic cylinder sleeve. A pretightening force sleeve pipe is arranged inside the hydraulic cylinder sleeve. A piston is installed on the pretightening force sleeve pipe. The two ends of the piston transversely penetrate through the pretightening force sleeve pipe to be connected with the hydraulic cylinder sleeve. The hydraulic cylinder sleeve and the pretightening force sleeve pipe are located on a hydraulic cylinder. A hydraulic cavity is formed inside the hydraulic cylinder. A power device is installed inside the hydraulic cavity. Power transmission sleeve pipes are arranged at the portions, close to the top, of the two side faces of the power device and electrically connected with the power device. An installation base is connected to the bottom of the power device. The bottom of the installation base is located on the outer side face of the lower surface of the hydraulic cylinder. The top of the installation base is detachably connected with the power device. According to the hydraulic pretightening force device, the problem that the torque force is not large enough due to human factors can be effectively avoided, the problem that a pretightening force device is damaged due to the excessively large torque force can be effectively avoided, the usability is high, pretightening is performed through the hydraulic effect, the pretightening effect is better, and the hydraulic pretightening effect can be well achieved.
Description
technical field [0001] The invention relates to a pre-tightening force device, in particular to a hydraulic pre-tightening force device. Background technique [0002] As a new type of hydraulic preloading device, the hydraulic preloading device has been gradually applied in civil engineering, but the general hydraulic preloading device still has certain deficiencies in use, and there is still a problem that the possibility of falling off is relatively high. Moreover, the pre-tightening effect cannot reach a more ideal state, and the tension bolt is in a pre-tightening state by turning the nut, and the rotation angle of the nut is not easy to control, which will easily affect the working accuracy of the whole machine, and may cause mechanical accidents in severe cases. In such a case, the expected use effect cannot be better achieved. Contents of the invention [0003] The technical problem to be solved by the present invention is: to overcome the above problems, to provid...
Claims
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IPC IPC(8): B23P19/06
CPCB23P19/065
Inventor 褚景春袁凌潘磊李英昌夏德喜林明
Owner GUODIAN UNITED POWER TECH