CN217270268U - Positioning fastening nut - Google Patents

Abstract

The utility model belongs to ground anchor field especially relates to a with stock complex location fastening nut. The utility model discloses a nut body and the first screw hole that is located nut body center, the top that is located first screw hole has seted up a through-hole, still include with body threaded connection's stock and pass through the fastener of connection can be dismantled to the through-hole, fastener lower extreme and stock butt still need the installation gasket on the nut simultaneously. Utilize this product can realize strengthening the stock when fixed, fix a position it well, greatly reduced drilling depth appearance frequency of phenomenon inadequately.

Description

Positioning fastening nut

Technical Field

The utility model relates to a ground anchor field especially relates to a with stock complex location fastening nut.

Background

The stock is a screw rod that has certain length, and the wide application can install a gasket on the drilling region usually in tunnel, ground, slope reinforcement and mining equipment during the use, installs the nut that plays the positioning action in advance on the stock, then utilizes drilling machine equipment to aim at the hole on the gasket with the stock and drills, and the nut can be followed the motion of stock this moment. When the nut on the anchor rod compresses the gasket, drilling is completed, and then grouting and other operations can be performed. In the whole process, workers do not need to consider distance factors, and the action time of rotating the nut on a construction site is shortened.

However, in the actual operation process, the nut generates position deviation due to strong vibration of the anchor rod and the drilling machine, so that the positioning is not accurate, the drilling depth is not enough, and the good fastening effect on the anchoring cannot be achieved after the drilling is finished.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a location fastening nut to improve the location effect and the fastening effect of nut, the frequency of appearance of the phenomenon that greatly reduced drilling depth is not enough.

The utility model provides a basic scheme does:

the utility model provides a location fastening nut, includes the nut body, the internal circumference of this nut body is coaxial to be provided with first screw hole, has the stock at this first screw hole female connection nut body go up along its radial direction set up with the through-hole of first screw hole intercommunication, can dismantle fixedly connected with fastener in this through-hole, the one end of this fastener with the inseparable butt in periphery of stock.

The technical principle and the beneficial effects of the utility model are that: after the gasket is installed in a preset drilling area, the nut is installed at the position of the anchor rod at the preset length, a fastener enters from the through hole above the nut body to enable the nut to be tightly abutted to the anchor rod, then the anchor rod is installed on drilling equipment, and the bolt is drilled until the nut is abutted to the gasket. Finally, to ensure that the nut is fully tightened against the washer, the nut may be turned using a tool, such as a torque wrench, until it can no longer be turned.

In the prior art, a common nut is directly adopted for positioning, so that the final drilling depth is insufficient due to the fact that the deviation phenomenon is easy to occur, and subsequent construction is influenced. The mode that this scheme adopted and drilled and placed the fastener in nut body top and support tightly can fix the nut in a certain specific position of stock, and the nut can not creep into the rock during because of the construction, or the hillside, or the ground, or during other regions, and produce and slide. On the basis of having good fixity, utilize the instrument swivel nut at last, ensure to accomplish the operation of holding up the gasket, promoted the fastening effect once more.

Furthermore, the diameter of the first threaded hole is larger than or equal to 25mm, and the thickness of the nut body is larger than or equal to 40 mm.

In the actual construction process of anchoring rock mass, the thread diameter of the anchor rod is generally more than or equal to 25mm, so that the first threaded hole is selected to be more than or equal to 25mm, preferably more than or equal to 25mm, 28mm, 32mm, 38mm, 40mm, 51mm, 52mm, 73mm, 76mm, 103mm and other common sizes for adapting the first threaded hole. Because the vibrations are great in the drilling work process, in order to guarantee that intensity and body do not receive great damage, prolong the life of nut, the thickness of nut body need be more than or equal to 40 mm.

Further, the through hole is a second threaded hole, and the fastener is a screw in threaded connection with the second threaded hole.

In order to conveniently screw in the fastener, the fastener is better matched with the through hole, the fastener is guaranteed not to fall or slide after being screwed in, and the through hole is set to be a threaded hole. The fastener selects the screw with the screw hole adaptation, reaches fastening fit and can support tightly the stock can.

Further, a receiving hole is formed in the outer side of the nut body, the receiving hole is coaxial with the through hole and is communicated with the through hole, and the receiving hole is used for receiving a screw head of the screw.

As the expansion of basic scheme, can set up an accommodation hole in screw hole upper end, use with the cooperation of below screw hole for hold with the screwhead of adaptation screw, the counter sink is preferred here, can cooperate the fastener with the through-hole better like this, avoids drilling in-process fastener to produce the offset of small distance or slide, and influence the location effect.

Further, the inner diameter of the accommodating hole is (8-12) mm.

Because the fastener can select for use common, economy, the part of being convenient for production and purchase, so the accommodation hole internal diameter can not set up too big or undersize, through actual test inspection, preferred (8-12) mm, can guarantee fastening and location effect under the prerequisite of economy and easy production.

Further, the fastener is a socket head cap screw.

The specific selection of the fastener, preferably a socket head cap screw, is common and economical and practical.

Further, the through hole is close to the outer end of the nut body, the shortest distance between the through hole and the outer end of the nut body is (10-15) mm, and the outer end of the nut body is far away from the drilling direction of the anchor rod.

The shortest distance between the through hole and the nut body refers to the shortest distance which is far away from the drilling direction of the anchor rod and is close to the outer end of the nut body after the drilling construction is finished. Since it abuts against the nut side of the washer, it is necessary to ensure the strength and structural stability of the nut itself to resist damage of the nut due to the pressing. The arrangement of the through hole can damage the internal structure of the nut, and concentrated stress can be generated near the through hole, so that the through hole is subjected to stronger stress extrusion, therefore, the optimal shortest distance is (10-15) mm, the strength of the nut body structures before and after the through hole structure is ensured during the construction of a driller, and the through hole is not easy to damage due to extrusion.

Further, the length of the anchor rod is more than or equal to 1.8 m.

In the field of rock bolting the length of the bolt is usually 1.8m or more, preferably 1.8m, 2.4m and 3m here to meet the requirements of bolts commonly used in practice.

Further, the nut body is made of 42CrMo alloy structural steel.

The 42CrMo alloy structural steel belongs to national high-strength alloy structural steel, has high strength and toughness and better hardenability, has higher fatigue limit and multiple impact resistance after quenching and tempering, has good low-temperature impact toughness and cheaper materials, and is suitable for production and manufacturing of the product. Further, the steel may be 45 steel, 40Cr alloy structural steel, Q355B alloy structural steel, or the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a perspective assembly view of a positioning fastening nut according to an embodiment of the present invention;

fig. 2 is a perspective front view of the positioning and fastening nut shown in fig. 1.

Reference numerals:

1-a nut body; 2, anchoring the bolt; 3-a gasket; 4-through hole

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

In the description of the present application, it is to be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "coupled," "abutted," and "secured" are to be construed broadly and include, for example, fixedly coupled, detachably coupled, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The embodiment is basically as shown in the attached figures 1 and 2: the utility model provides a location fastening nut, includes nut body 1, and the internal week of nut body 1 is coaxial to be provided with first screw hole, has stock 2 at this first screw hole female connection. The nut body 1 is provided with a through hole 4 communicated with the first threaded hole along the radial direction, the through hole 4 can be a second threaded hole, the outer side of the nut body 1 can be further provided with a containing hole which is coaxial with the through hole 4 and communicated with each other, the containing hole is used for containing a screw head of the screw, the diameter of the containing hole is larger than that of the second threaded hole, namely, the diameter of the second threaded hole can also be set to be a countersunk hole, and the inner diameter of the containing hole is preferably 8mm, 10mm and 12 mm. The through hole 4 is internally detachably and fixedly connected with a fastener, one end of the fastener is tightly abutted to the periphery of the anchor rod, and the fastener can be selected as a screw in threaded connection with the second threaded hole.

The diameter of the first threaded hole is not less than 25mm, preferably not less than 25mm, more preferably not less than 25mm, 28mm, 32mm, 38mm, 40mm, 51mm, 52mm, 73mm, 76mm, 103mm and the like, and the thickness of the nut body 1 is not less than 40 mm. The length of the anchor rod 2 is more than or equal to 1.8m, preferably 1.8m, 2.4m and 3 m. The shortest distance between the through hole 4 and the end of the nut body 1 is preferably 10mm, 12mm and 15mm, and the shortest distance between the through hole 4 and the outer end of the nut body 1 is particularly the shortest distance away from the drilling direction of the anchor rod and close to the outer end of the nut body after the drilling construction is completed.

The thread body 1 can be made of 42CrMo alloy structural steel, can also be made of No. 45 steel, 40Cr alloy structural steel, Q355B alloy structural steel and the like, and can also be made of other materials.

The fastener can adopt an inner hexagon screw, and can also adopt other parts which can be matched with the through hole 4.

During the use, install gasket 3 in predetermined drilling area back, install nut body 1 in the position department of stock 2 predetermined length earlier, should keep away from the drilling direction of stock and be close to the outer end of nut body during through-hole 4 this moment. With hexagon socket head cap screw from the through-hole 4 screw in of nut body 1 top, make it fully support tightly with stock 2, then utilize drilling equipment, with stock 2 bore into the rock mass, treat that nut body 1 on the stock 2 can with 3 butts of gasket. Finally, to ensure that the nut body 1 is fully tightened against the washer 3, the nut body 1 can be rotated by a tool, such as a torque wrench, until it can no longer be rotated. And the drilling construction is finished, and the next working procedure can be carried out.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (9)

1. The utility model provides a location fastening nut, includes the nut body, and the internal week of this nut body is coaxial to be provided with first screw hole, has stock, its characterized in that at this first screw hole female connection:

the nut body is provided with a through hole communicated with the first threaded hole along the radial direction of the nut body, a fastener is detachably and fixedly connected in the through hole, and one end of the fastener is tightly abutted to the periphery of the anchor rod.

2. The positioning and fastening nut as defined in claim 1, wherein: the diameter of the first threaded hole is larger than or equal to 25mm, and the thickness of the nut body is larger than or equal to 40 mm.

3. The positioning and fastening nut as defined in claim 1, wherein: the through hole is a second threaded hole, and the fastener is a screw in threaded connection with the second threaded hole.

4. The positioning and fastening nut of claim 3, wherein: and the outer side of the nut body is provided with a receiving hole which is coaxial with the through hole and communicated with the through hole, and the receiving hole is used for receiving a screw head of the screw.

5. The positioning and fastening nut of claim 4, wherein: the inner diameter of the accommodating hole is (8-12) mm.

6. The positioning and fastening nut of claim 4, wherein: the fastener is a socket head cap screw.

7. The positioning and fastening nut of claim 2, wherein: the through hole is close to the outer end of the nut body, the shortest distance between the through hole and the outer end of the nut body is (10-15) mm, and the outer end of the nut body is far away from the drilling direction of the anchor rod.

8. The positioning and fastening nut as defined in claim 1, wherein: the length of the anchor rod is more than or equal to 1.8 m.

9. The positioning and fastening nut as claimed in any one of claims 1 to 8, wherein: the nut body is made of 42CrMo alloy structural steel.

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