CN104564114A - Anchor bolt plate capable of improving anchor bolt preload - Google Patents
Anchor bolt plate capable of improving anchor bolt preload Download PDFInfo
- Publication number
- CN104564114A CN104564114A CN201510029599.6A CN201510029599A CN104564114A CN 104564114 A CN104564114 A CN 104564114A CN 201510029599 A CN201510029599 A CN 201510029599A CN 104564114 A CN104564114 A CN 104564114A
- Authority
- CN
- China
- Prior art keywords
- anchor
- nut
- annular
- tray
- anchor bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000036316 preload Effects 0.000 title claims description 3
- 238000005096 rolling process Methods 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Connection Of Plates (AREA)
Abstract
本发明公开了一种可提高锚杆预紧力的锚杆托盘。其包括锚杆托盘本体，所述锚杆托盘本体与锚杆螺母相接触的一面设有环形的凹槽，凹槽内设有环形滚动减摩附件，所述环形滚动减摩附件为一环形带，环形带上均匀开有多个孔，孔内嵌有滚珠。本发明设有环形滚动减摩附件，紧固锚杆时，当拧动锚杆螺母时，螺母压在滚珠上，螺母旋转的扭矩转化为对滚珠的压力，传递给锚杆托盘，在反作用力作用下，锚杆得以张紧，预紧力逐步提高。本发明结构简单，容易使用，成本较低，对改善锚杆预紧力有明显效果。
The invention discloses an anchor tray which can improve the pre-tightening force of the anchor. It includes the anchor tray body, the side of the anchor tray body in contact with the anchor nut is provided with an annular groove, and an annular rolling anti-friction attachment is arranged in the groove, and the annular anti-friction attachment is an annular belt , A plurality of holes are evenly opened on the endless belt, and balls are embedded in the holes. The invention is equipped with an annular rolling anti-friction attachment. When tightening the anchor rod, when the anchor nut is screwed, the nut is pressed on the ball, and the torque of the nut rotation is converted into the pressure on the ball, which is transmitted to the anchor rod tray. Under the action, the anchor rod can be tensioned, and the pre-tightening force is gradually increased. The invention has the advantages of simple structure, easy use, low cost and obvious effect on improving the pre-tightening force of the bolt.
Description
技术领域 technical field
本发明涉及一种可提高锚杆预紧力的锚杆托盘。 The invention relates to an anchor tray which can improve the pre-tightening force of the anchor.
背景技术 Background technique
锚杆支护是矿井巷道的一种主要支护形式。在锚杆支护中，为实现锚杆支护的高强度、高刚度、高可靠性和低密度，往往要对锚杆施加较大的预紧力，并用托盘和螺母对其固定。 Bolt support is a main support form of mine roadway. In bolt support, in order to achieve high strength, high rigidity, high reliability and low density of bolt support, it is often necessary to apply a large preload to the bolt and fix it with trays and nuts.
锚杆预紧力施加的一般方法是对锚杆螺母施加较大的安装扭矩。由于锚杆螺母与锚杆托盘之间的摩擦力，造成了安装扭矩的损失。为减小这种扭矩损失，通常在锚杆螺母与锚杆托盘之间安放减摩垫圈（垫片）。但减摩垫圈与锚杆螺母之间、减摩垫圈与锚杆托盘之间依然存在滑动摩擦力，因此，减小扭矩损失的效果依然有限。 The general method of applying the pretightening force of the anchor rod is to apply a large installation torque to the anchor rod nut. Loss of installation torque due to friction between the anchor nut and the anchor plate. To reduce this torque loss, anti-friction washers (shims) are usually placed between the bolt nut and the bolt tray. However, sliding friction still exists between the anti-friction washer and the anchor nut, and between the anti-friction washer and the anchor tray, so the effect of reducing torque loss is still limited.
发明内容 Contents of the invention
为了解决上述技术问题，本发明提供一种可提高锚杆预紧力、减小锚杆螺母安装扭矩损失的锚杆托盘。 In order to solve the above technical problems, the present invention provides an anchor tray that can increase the pre-tightening force of the anchor and reduce the torque loss of the anchor nut during installation.
本发明解决上述技术问题的技术方案是：包括锚杆托盘本体，所述锚杆托盘本体与锚杆螺母相接触的一面设有环形的凹槽，凹槽内设有环形滚动减摩附件，所述环形滚动减摩附件为一环形带，环形带上均匀开有多个孔，孔内嵌有滚珠。 The technical solution of the present invention to solve the above technical problems is: comprising the anchor tray body, the side of the anchor tray body in contact with the anchor nut is provided with an annular groove, and an annular rolling anti-friction attachment is arranged in the groove, so that The ring-shaped rolling anti-friction attachment is a ring-shaped belt, and a plurality of holes are evenly opened on the ring-shaped belt, and balls are embedded in the holes.
本发明的技术效果在于：本发明设有环形滚动减摩附件，紧固锚杆时，当拧动锚杆螺母时，螺母压在滚珠上，螺母旋转的扭矩转化为对滚珠的压力，传递给锚杆托盘，在反作用力作用下，锚杆得以张紧，预紧力逐步提高。由于滚珠与锚杆螺母之间、滚珠与锚杆托盘本体的环形凹槽之间是滚动接触，因此可以大大减小摩擦损失。 The technical effect of the present invention is that the present invention is provided with an annular rolling anti-friction attachment. When the anchor rod is fastened, when the anchor rod nut is twisted, the nut is pressed on the ball, and the torque of the nut rotation is converted into a pressure on the ball, which is transmitted to the The anchor tray, under the action of the reaction force, the anchor can be tensioned, and the pre-tightening force is gradually increased. Due to the rolling contact between the ball and the anchor nut, and between the ball and the annular groove of the anchor tray body, the friction loss can be greatly reduced.
本发明结构简单，容易使用，成本较低，对改善锚杆预紧力有明显效果。 The invention has the advantages of simple structure, easy use, low cost and obvious effect on improving the pre-tightening force of the bolt.
附图说明 Description of drawings
图1为本发明的结构示意图； Fig. 1 is a structural representation of the present invention;
图2为本发明用于锚杆固定时的结构示意图； Fig. 2 is the structural representation when the present invention is used for bolt fixing;
附图中的说明：1—锚杆；2—钻孔；3—锚杆托盘；4—锚杆螺母5—凹槽；6—滚珠；7—保持器；8—托盘孔。 Description in the accompanying drawings: 1—anchor; 2—drilling; 3—anchor tray; 4—anchor nut 5—groove; 6—ball; 7—retainer; 8—tray hole.
具体实施方式 Detailed ways
参见图1、2，本发明包括锚杆托盘本体3、凹槽5、滚珠6、环形带7、托盘孔8，所述锚杆托盘本体3与锚杆螺母4相接触的一面设有环形的凹槽5，凹槽5内设有环形滚动减摩附件，所述环形滚动减摩附件为一环形带7，环形带上均匀开有多个孔，孔内嵌有滚珠6。 Referring to Figures 1 and 2, the present invention includes an anchor tray body 3, a groove 5, a ball 6, an annular belt 7, and a tray hole 8, and the side of the anchor tray body 3 in contact with the anchor nut 4 is provided with an annular The groove 5 is provided with an annular rolling anti-friction accessory in the groove 5, and the annular rolling anti-friction accessory is an annular belt 7, and a plurality of holes are evenly opened on the annular belt, and balls 6 are embedded in the holes.
如图2所示，本发明用于锚杆固定时，锚杆1插入钻孔2内，套上锚杆托盘3，再用锚杆螺母4固定，紧固锚杆1时，拧动锚杆螺母4，螺母4压在滚珠6上，螺母4旋转的扭矩转化为对滚珠6的压力，传递给锚杆托盘3，在反作用力作用下，锚杆1得以张紧，预紧力逐步提高。由于滚珠6与锚杆螺母4之间、滚珠6与锚杆托盘本体6的环形凹槽之间是滚动接触，因此可以大大减小摩擦损失。 As shown in Figure 2, when the present invention is used for anchor rod fixing, the anchor rod 1 is inserted into the drill hole 2, put on the anchor rod tray 3, and then fixed with the anchor rod nut 4, and when the anchor rod 1 is tightened, the anchor rod is twisted The nut 4, the nut 4 is pressed on the ball 6, the torque of the rotation of the nut 4 is converted into the pressure on the ball 6, and transmitted to the anchor tray 3, under the reaction force, the anchor 1 is tensioned, and the pre-tightening force is gradually increased. Since there is rolling contact between the ball 6 and the anchor nut 4, and between the ball 6 and the annular groove of the anchor tray body 6, the frictional loss can be greatly reduced.
本发明结构简单，容易使用，成本较低，对改善锚杆预紧力有明显效果。 The invention has the advantages of simple structure, easy use, low cost and obvious effect on improving the pre-tightening force of the bolt.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510029599.6A CN104564114A (en) | 2015-01-21 | 2015-01-21 | Anchor bolt plate capable of improving anchor bolt preload |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510029599.6A CN104564114A (en) | 2015-01-21 | 2015-01-21 | Anchor bolt plate capable of improving anchor bolt preload |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104564114A true CN104564114A (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510029599.6A Pending CN104564114A (en) | 2015-01-21 | 2015-01-21 | Anchor bolt plate capable of improving anchor bolt preload |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104564114A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060854A (en) * | 2017-04-17 | 2017-08-18 | 安徽福淮矿山科技有限公司 | A kind of antifriction pad and pallet and its method for testing of related bolt pretension size |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2199105A (en) * | 1986-12-09 | 1988-06-29 | Bergwerksverband Gmbh | Yieldable anchor plate system for rock bolts |
| CN201902219U (en) * | 2010-12-28 | 2011-07-20 | 西安科技大学 | Novel high-strength anchor rod nut |
| CN102296975A (en) * | 2011-07-28 | 2011-12-28 | 湖南科技大学 | Bolt-prestressing device |
| CN202148913U (en) * | 2011-07-28 | 2012-02-22 | 湖南科技大学 | Anchor rod pretightening device |
| CN202441404U (en) * | 2012-03-02 | 2012-09-19 | 淮南矿业(集团)有限责任公司 | Anchor bolt support flexible locking structure |
| CN204402527U (en) * | 2015-01-21 | 2015-06-17 | 湖南科技大学 | A kind of anchor rod pallet board improving bolt pretension |
-
2015
- 2015-01-21 CN CN201510029599.6A patent/CN104564114A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2199105A (en) * | 1986-12-09 | 1988-06-29 | Bergwerksverband Gmbh | Yieldable anchor plate system for rock bolts |
| CN201902219U (en) * | 2010-12-28 | 2011-07-20 | 西安科技大学 | Novel high-strength anchor rod nut |
| CN102296975A (en) * | 2011-07-28 | 2011-12-28 | 湖南科技大学 | Bolt-prestressing device |
| CN202148913U (en) * | 2011-07-28 | 2012-02-22 | 湖南科技大学 | Anchor rod pretightening device |
| CN202441404U (en) * | 2012-03-02 | 2012-09-19 | 淮南矿业(集团)有限责任公司 | Anchor bolt support flexible locking structure |
| CN204402527U (en) * | 2015-01-21 | 2015-06-17 | 湖南科技大学 | A kind of anchor rod pallet board improving bolt pretension |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060854A (en) * | 2017-04-17 | 2017-08-18 | 安徽福淮矿山科技有限公司 | A kind of antifriction pad and pallet and its method for testing of related bolt pretension size |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |