CN111021396B - Foundation bolt lateral loading self-locking mechanism - Google Patents
Foundation bolt lateral loading self-locking mechanism Download PDFInfo
- Publication number
- CN111021396B CN111021396B CN201911243970.3A CN201911243970A CN111021396B CN 111021396 B CN111021396 B CN 111021396B CN 201911243970 A CN201911243970 A CN 201911243970A CN 111021396 B CN111021396 B CN 111021396B
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- China
- Prior art keywords
- wedge
- type
- chock
- foundation bolt
- bolt
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
Abstract
The invention provides a lateral loading self-locking mechanism for a foundation bolt, which mainly comprises a wedge-type attachment strap (1), a wedge-type chock (2) and a wedge-type chock nut (6). The wedge-type butt strap (1) is two in number, and is lapped on the inner side of the ground rail (7) when in use, the contact surface of the wedge-type butt strap (1) and the wedge-type chock block (2) is processed into an inclined surface, the angle of the inclined surface is consistent with that of the wedge-type chock block (2), and a wedge-shaped groove is formed after the wedge-type butt strap is lapped on the inner side of the ground rail (7); the wedge-type chock (2) is designed into a trapezoid shape corresponding to the wedge-shaped groove, the outer side of the wedge-type chock is convexly processed into a bolt, the inner side of the wedge-type chock is processed into a U-shaped groove, and the wedge-type chock can pass through the foundation bolt (4); the wedge-shaped chock nut (6) corresponds to the convex bolt on the outer side of the wedge-shaped chock. The designed foundation bolt lateral loading self-locking mechanism is simple in structure composition and convenient to operate and use, not only increases the friction area between the wedge-type access plate (1) and the ground rail (7), but also increases the pressure between the wedge-type access plate (1) and the ground rail (7), thereby forming self-locking.
Description
Technical Field
The invention belongs to general equipment for structural strength tests, and particularly relates to a lateral loading self-locking mechanism for a foundation bolt.
Background
In the structural strength test (such as static test and fatigue test), a press beam, an upright post, a test piece and the like need to be fixed by a foundation bolt, and the fixing mode is mainly to tightly press the press plate by screwing a nut through a ratchet wrench, so that friction force is generated between the press plate and a ground rail plane, and the slide is prevented. Because the fixed easy production of slip along the ground rail direction needs to increase frictional force through the pressurized beam and increase rag bolt quantity etc. through the pressurized strut fixing base to prevent that test piece etc. from following the ground rail direction and sliding (see fig. 1). The method increases manpower loss and test equipment, and reduces installation efficiency.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the lateral loading self-locking mechanism for the foundation bolt, which can realize self-locking when the foundation bolt is fixed on the ground rail, prevent equipment from sliding along the direction of the ground rail during loading, enhance the safety and reliability and improve the installation working efficiency.
The side loading self-locking mechanism of the foundation bolt mainly comprises a wedge-shaped lapping plate, a wedge-shaped chock and a wedge-shaped chock nut. The wedge-type butt strap is symmetrically processed and used, when in use, the butt strap is lapped in a ground rail groove, the contact surface of the wedge-type butt strap and the wedge-type chock block is processed into an inclined surface, the angle of the inclined surface is consistent with that of the inclined surface of the wedge-type chock block, and the contact surface is lapped on the inner side of the ground rail to form a wedge-shaped groove; the wedge-type chock is designed into a trapezoid corresponding to the wedge-shaped groove in shape, the outer side of the wedge-type chock is processed into a bolt, the inner side of the wedge-type chock is processed into a U-shaped groove, the foundation bolt can be clamped during installation through the foundation bolt, and when the foundation bolt is stressed in course, the wedge-type butt strap expands towards the two sides of the ground rail groove, which is similar to the principle of the expansion bolt, so that the foundation bolt is prevented from sliding along the stressed direction; the wedge-type chock nut corresponds to a convex bolt on the outer side of the wedge-type chock; the two wedge-type butt straps are symmetrically arranged and placed in the ground rail groove to form a conical bayonet, and the size of the bayonet is smaller and smaller along the direction of the force; the wedge-type chock block is placed in a bayonet formed by the two wedge-type butt straps, and the inclined surfaces of the two assembling parts are attached (certain course pretightening force is applied).
Furthermore, the two wedge type butt straps are right-angle plates, one side of the right-angle joint ground rail groove is a plane plate, one side of the right-angle joint wedge type plug block is an inclined plane with wide outside and narrow inside along the direction of the conical bayonet, the two wedge type butt straps are lapped behind the inner side of the ground rail, and the two wedge type butt straps form a wedge-shaped groove.
Furthermore, the wedge-shaped chock is a T-shaped block, the upper end of the wedge-shaped chock is a plane plate for fastening and pressing the foundation nut, and the lower end of the wedge-shaped chock is a trapezoidal block corresponding to the size of a wedge-shaped groove formed by the wedge-shaped chock.
When the foundation bolt lateral loading self-locking mechanism is installed and used, the method comprises the following steps: two wedge-type butt straps are symmetrically lapped on the inner sides of two sides of the ground rail, and a wedge-shaped groove is formed on the inner side of the ground rail; then the wedge-shaped plug blocks are installed from the wedge-shaped grooves in a matching mode; assembling the wedge-type chock nut, screwing the wedge-type chock nut by a wrench to give a certain pretightening force, so that the wedge-type chock moves along the screw rod direction, and pushing the two wedge-type access plates to expand towards the two side surfaces of the ground rail along the inclined surface of the wedge-type chock. When the foundation bolt is subjected to lateral force, the two wedge-type access plates continuously expand between the two side faces of the ground rail, so that the pressure between the wedge-type access plates and the ground rail is continuously increased, friction self-locking is formed, and equipment is prevented from sliding.
In the technical scheme, the designed foundation bolt lateral loading self-locking mechanism is simple in structure composition and convenient to operate and use, the friction area between the butt strap and the ground rail is increased, and the wedge-shaped plug block is pushed to expand in the wedge-shaped groove of the wedge-shaped butt strap along with the sliding of the foundation bolt through the matching of the wedge-shaped plug block and the wedge-shaped butt strap, so that the pressure between the wedge-shaped butt strap and the ground rail is gradually increased. The above dual factors of increasing friction area and increasing pressure result in an increase of friction force, thereby forming self-locking.
Drawings
FIG. 1 is a schematic view illustrating the installation and fixation of an anchor bolt in the prior art.
FIG. 2 is a schematic view of the assembly of the anchor bolt lateral loading self-locking device and the ground rail. Wherein: 1. wedge type butt strap, 2, wedge type chock, 3, rag bolt nut, 4, rag bolt, 5, bush, 6, wedge type chock nut, 7, ground rail.
Fig. 3 is a schematic diagram of a wedge strap machining dimension.
Fig. 4 is a schematic view of a wedge-type chock machining dimension.
FIG. 5 is a schematic view of the use of the anchor bolt side-loading self-locking mechanism.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 2 to 5, and it is obvious that the described embodiment is only a specific embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 3, a wedge strap is machined to the dimensions shown. A wedge-type chock is machined to the dimensions shown in figure 4.
Referring to fig. 2, during installation, two wedge-type access boards 1 are respectively placed on two sides of a ground rail 7, then a wedge-type plug block 2 is placed between the two wedge-type access boards 1, a wedge-type plug block nut 6 is screwed by a wrench, a certain pretightening force is given, so that the wedge-type plug block 2 moves along a screw rod direction, the two wedge-type access boards 1 are pushed to expand towards two sides of the ground rail 7 along the inclined plane of the wedge-type plug block 2, when a ground bolt 4 is subjected to a lateral force, the two wedge-type access boards 1 continuously expand between two sides of the ground rail 7, so that the pressure between the wedge-type access boards 1 and the ground rail 7 is continuously increased, according to a friction force formula F = μ × FN, when FN is continuously increased, the friction force F is continuously increased, no gap exists between the two sides of the wedge-type access boards 1, the wedge-type plug block 2 and the ground rail 7, and the two sides are integrated, and self.
The use form of the foundation bolt lateral loading self-locking mechanism is shown in figure 5, a foundation bolt 4 is placed in a U-shaped groove of a wedge-shaped chock 2, a lining 5 is sleeved on a foundation bolt rod and placed on the wedge-shaped chock 2, the lining 5 is connected with an actuating cylinder, a nut 4 of the foundation bolt is tightly screwed, and the foundation bolt lateral loading self-locking mechanism can be used for lateral loading.
Claims (1)
1. The utility model provides a rag bolt side direction loading self-locking mechanism which characterized in that: the side loading self-locking mechanism of the foundation bolt mainly comprises a wedge type lapping plate (1), a wedge type chock block (2) and a wedge type chock block nut (6); the wedge-type butt strap (1) is divided into two blocks, and is symmetrically lapped on the two side edges of the ground rail (7) when in use, the contact surface of the wedge-type butt strap (1) and the wedge-type chock block (2) is processed into an inclined surface, the angle of the inclined surface is consistent with that of the wedge-type chock block (2), and a wedge-shaped groove with a wide inside and a narrow outside is formed after lapping on the two side edges of the ground rail (7); the wedge-type chock (2) is designed to be trapezoidal corresponding to the wedge-shaped groove in shape, the outer side of the wedge-type chock is processed into a bolt, the inner side of the wedge-type chock is processed into a U-shaped groove, the wedge-type chock (2) can be placed into the wedge-shaped groove formed by the two wedge-type access plates (1) during installation through the foundation bolt (4), the inclined surfaces of the two combined parts are attached to each other, the foundation bolt (4) is clamped at the same time, when the foundation bolt (4) is subjected to outward sliding force, the wedge-type chock (2) pushes the wedge-type access plates (1) to expand towards the two sides of the groove of the ground rail (7), the sliding friction force of the wedge-type access plates (1) and the guide rail is increased, and the foundation bolt (4) is; the wedge-type chock block nut (6) corresponds to a convex bolt on the outer side of the wedge-type chock block (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911243970.3A CN111021396B (en) | 2019-12-06 | 2019-12-06 | Foundation bolt lateral loading self-locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911243970.3A CN111021396B (en) | 2019-12-06 | 2019-12-06 | Foundation bolt lateral loading self-locking mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111021396A CN111021396A (en) | 2020-04-17 |
| CN111021396B true CN111021396B (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911243970.3A Active CN111021396B (en) | 2019-12-06 | 2019-12-06 | Foundation bolt lateral loading self-locking mechanism |
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| Country | Link |
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| CN (1) | CN111021396B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201942966U (en) * | 2010-11-05 | 2011-08-24 | 中铁工程设计院有限公司 | Accurate adjusting device for steel rail |
| JP5722197B2 (en) * | 2011-11-24 | 2015-05-20 | 公益財団法人鉄道総合技術研究所 | Track repair method |
| CN103616152B (en) * | 2013-12-04 | 2015-08-26 | 大连理工大学 | A kind of steel rail impact test device and method |
| CN204566091U (en) * | 2015-04-24 | 2015-08-19 | 重庆大学 | The online car body of straddle-type single-track vehicle supports and self-locking device |
| CN208669799U (en) * | 2018-08-24 | 2019-03-29 | 国网安徽省电力有限公司亳州供电公司 | Punching foundation bolt locking device |
| CN109187192A (en) * | 2018-10-15 | 2019-01-11 | 上海秦耀航空试验技术有限公司 | A kind of airplane floor sled test device and application method |
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2019
- 2019-12-06 CN CN201911243970.3A patent/CN111021396B/en active Active
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| CN111021396A (en) | 2020-04-17 |
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