Large-tonnage jacking device

A lifting device and large tonnage technology, applied in the direction of the lifting device, can solve the problems of large environmental impact, aging oil leakage of the sealing ring, heavy lifting device, etc. Effect

CN110028007APending Publication Date: 2019-07-19HANGZHOU HENGHONG MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-07-19

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Abstract

The invention discloses a large-tonnage jacking device which comprises a base. A main screw rod and a motor are arranged on the base, the main screw rod is sleeved with an inner screw rod and an outerscrew rod, a planetary screw rod is arranged between the base and an outer pipe, a reduction gearbox is arranged between the output end of the motor and the main screw rod, the motor drives the mainscrew rod, the inner screw rod and the outer screw rod to do jacking motion along the planetary screw rod, the motor and the reduction gearbox do jacking motion along with the main screw rod, the planetary screw rod is rotationally fixed to the base, the main screw rod further drives the planetary screw rod to rotate, and the main screw rod and the planetary screw rod are opposite in threaded rotation direction. Two-stage jacking is completed by one motor, and the jacking stroke is increased, so that the requirement for large-tonnage jacking is met.
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Description

technical field

[0001] The invention relates to the technical field of jacking and hoisting devices, in particular to a large-tonnage jacking device. Background technique

[0002] At present, jacks are roughly divided into two types according to the jacking method. One type adopts hydraulic jacking. Although the hydraulic jacking has a large jacking force and multi-stage jacking in use, there is a problem of aging oil leakage of the sealing ring, and its use is affected by the environment. The impact is greater; the other type uses screw jacking, and the jacking machine adopts the screw jacking method. Although it is equipped with a motor and a reduction box, it can be made into an electric type. This kind of jacking machine can only be lifted by one level. . In addition, if the form of socket screw is used, although it can achieve the purpose of extending two stages, it can usually only be used in occasions where the jacking weight is relatively light. Rotation, so large-...

Examples

Example Embodiment

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] like figure 1 , 3 As shown, the present invention provides a large-tonnage jacking device, which includes a base 1, a main screw 2 and a vertically placed motor 3 are arranged on the base 1, and an inner tube 4 and an inner tube 4 are sleeved on the main screw 2. The outer tube 5, a planetary screw 6 is arranged between the base 1 and the outer tube 5, a reduction box 7 is arranged between the output end of the motor 3 and the main screw 2, and a reduction transmission gear 8 is arranged in the reduction box 7, and the motor 3 passes through The transmission gear 8 drives the main screw 2 to perform the lifting action. Therefore, the motor 3 drives the main screw 2, the inner tube 4 and the outer tube 5 to perform a lifting action along the planetary screw 6, and the motor 3 and the reduction box 7 perform a lifting action with the main ...