Expansion bolt
A technology of expansion bolts and threads, applied in high-strength fields, can solve the problems of low strength, short life, complex structure, etc., and achieve the effect of high strength, reasonable structure and simple installation
Inactive Publication Date: 2013-07-03
SUZHOU CUIZHI NEW TECH DEV
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Problems solved by technology
[0005] In order to solve the shortcomings of existing expansion bolts with complex structure, short life and low strength, the present invention provides an expansion bolt
Method used
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Embodiment Construction
[0012] Describe an embodiment below in conjunction with accompanying drawing, the present invention is further described.
[0013] In Fig. 1-Fig. 2, the expansion bolt is composed of a fixing part 1, a deformation sleeve 5 and an adjusting nut 3. The fixing part 1 is a rotating body, the head is provided with a stopper 7, the surface of the fixing part 1 is provided with a thread 2, and the thread 2 is matched with an adjusting nut 3, and a deformation sleeve 5 is arranged on the fixed part 1 between the adjustment nut 3 and the stopper 7. The cross section of the deformation sleeve 5 is C-shaped, and the inner surface of the end of the deformation sleeve 5 is provided with a pressure conical surface 8 , the matching end surface of the adjusting nut 3 and the deformation sleeve 5 is the driving cone surface 4, the matching end surface of the stopper 7 and the deformation sleeve 5 is the fixed cone surface 6, the inclination angle of the driving cone surface 4 is α, the distance...
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The invention relates to an expansion bolt which comprises a fixing part, an adjusting nut and a deformation sleeve, wherein the fixing part is a rotary body, and the head of the fixing part is provided with a check block; the surface of the fixing part is provided with a thread which is matched with the adjusting nut; the deformation sleeve is arranged on the fixing part between the adjusting nut and the check block; the cross section of the deformation sleeve is in a C shape; the inner surface of the end of the deformation sleeve is provided with a compression conical surface; the end surface where the adjusting nut is matched with the deformation sleeve is a driving conical surface; the end surface where the check block is matched with the deformation sleeve is a fixed conical surface; and when the expansion bolt is used, the part of the fixing part provided with the deformation sleeve is put into a fixing hole, the adjusting nut is rotated to move towards the head of the fixing part, and the deformation sleeve elastically deforms and is in interference fit with the fixing hole under the co-extrusion of the adjusting nut and the check block. The expansion bolt is large in contact range with a fixing body, high in strength, strong in stability, reasonable in structure, and easy to install and is reusable.
Description
technical field [0001] The invention relates to an expansion bolt, especially an expansion bolt with high strength, repeated use and long service life. Background technique [0002] At present, the existing expansion bolts are mainly composed of a base, an expansion tube, a gasket and a nut, wherein the base rod is tapered, its small end is processed with threads, and a large section at one end of the expansion tube is processed with three longitudinal openings, so that the expansion One end of the tube is split into three pieces. During assembly, the expansion tube is stretched out by moving the base bar to realize its fixing function. This expansion bolt is for one-time use, wastes resources, has low strength and poor stability. [0003] There is also a Chinese patent: an expansion bolt (200580025461.3), which includes a fixing part with a support plate and a leg rod. The expansion bolt also has an actuator with a top plate and a shank. In the locked position, the top p...
Claims
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Patent Timeline
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Inventor 孟繁茂其他发明人请求不公开姓名
Owner SUZHOU CUIZHI NEW TECH DEV