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Title:
ANTI-THEFT APPARATUS FOR OIL PUMPING UNIT PRESSURE LEVER
Document Type and Number:
WIPO Patent Application WO/2022/007670
Kind Code:
A1
Abstract:
An anti-theft apparatus for an oil pumping unit pressure lever, comprising a press plate (1), a press cover (2), an anti-theft locking mechanism, and a connection mechanism. The housing (4) of the anti-theft locking mechanism has an embedding segment (41) and a fitting segment (42); a lower limiting protrusion (421) and an upper limiting protrusion (422) are arranged on the inner wall of the fitting segment; an eccentric sleeve (5) comprises a thread fitting portion (51) and a housing fitting portion (52); the housing fitting portion is located between the lower limiting protrusion and the upper limiting protrusion; an upper cover (6) fits the side of the fitting segment distant from the embedding segment; the connection mechanism comprises a connection screw (7) and a locking nut (8); the connection screw comprises a core member (71) and a sleeve member (72); and the locking nut is in threaded connection with the connection screw, and the locking nut is located in the cavity of the connection mechanism. The anti-theft apparatus for the oil pumping unit pressure lever sets the anti-theft locking mechanism to be a closed structure, and sets the core member of the connection screw to be a ceramic material, thereby reducing the risk that the screw is sawn-off, and further effectively improving the anti-theft performance of the anti-theft apparatus for the oil pumping unit pressure lever.

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Inventors:
WANG BIAO (CN)
Application Number:
PCT/CN2021/103289
Publication Date:
January 13, 2022
Filing Date:
June 29, 2021
Export Citation:
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Assignee:
SANYA GANTAI PETROLEUM MACHINERY TECH CO LTD (CN)
International Classes:
E05B15/00; E21B43/00; E05B15/16; E05B65/00; F16B41/00
Foreign References:
CN111794715A2020-10-20
CN111794713A2020-10-20
CN212225187U2020-12-25
CN111794714A2020-10-20
CN202628043U2012-12-26
CN203685133U2014-07-02
CN207316374U2018-05-04
EP2636911A12013-09-11
Attorney, Agent or Firm:
HAINAN HEIP INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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