CN102900201B - Manufacture mold and manufacture method of grouting anchor reinforced bar connection sleeve - Google Patents
Manufacture mold and manufacture method of grouting anchor reinforced bar connection sleeve Download PDFInfo
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- CN102900201B CN102900201B CN201210406016.3A CN201210406016A CN102900201B CN 102900201 B CN102900201 B CN 102900201B CN 201210406016 A CN201210406016 A CN 201210406016A CN 102900201 B CN102900201 B CN 102900201B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 87
- 239000010959 steel Substances 0.000 claims abstract description 87
- 238000001125 extrusion Methods 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 8
- 239000011440 grout Substances 0.000 claims description 3
- 239000011083 cement mortar Substances 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 6
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 3
- 229910001208 Crucible steel Inorganic materials 0.000 abstract description 2
- 238000003032 molecular docking Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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Abstract
本发明涉及预制构件的钢筋套筒浆锚连接件，属于建筑工程技术领域，具体为一种浆锚式钢筋连接套筒及其制造模具和制造方法。浆锚式钢筋连接套筒包括：套筒体、通孔、弹性橡胶密封圈、开口端、固定端、套筒凹槽、套筒凸肋、灌浆料入料孔、灌浆料出料孔。以通用无缝钢管为原材通过机械挤压方式，制成装配式建筑用灌浆锚固式钢筋连接套筒，使连接性能、性价比达到或超过对应的铸钢、铸铁或机加工式的连接套筒。本发明用于单体钢筋连接和装配式混凝土建筑预制构件之间的钢筋连接，两根连接钢筋的对接端通过连接套筒及灌注其内部空隙的硬化水泥砂浆结合形成一个连接体。不需要焊接，不需要湿作业施工，而使单体钢筋或两构件中连接的钢筋达到等强对接。
The invention relates to a slurry-anchor connector of a prefabricated steel bar sleeve, which belongs to the technical field of construction engineering, in particular to a slurry-anchor type steel bar connecting sleeve, a manufacturing mold and a manufacturing method thereof. The slurry-anchor steel bar connection sleeve includes: a sleeve body, a through hole, an elastic rubber sealing ring, an open end, a fixed end, a sleeve groove, a sleeve convex rib, a grouting material inlet hole, and a grouting material outlet hole. The general seamless steel pipe is used as the raw material to make the grouting-anchor steel connection sleeve for prefabricated buildings through mechanical extrusion, so that the connection performance and cost performance can reach or exceed the corresponding cast steel, cast iron or machined connection sleeve . The invention is used for the connection of single steel bars and steel bars between prefabricated concrete building components. The butt ends of two connected steel bars are combined to form a connecting body through the connection sleeve and the hardened cement mortar poured into the inner space. No welding is required, no wet construction is required, and the single steel bar or the steel bars connected in two components can achieve equal strength docking.
Description
技术领域 technical field
本发明涉及单体钢筋及预制构件的钢筋套筒浆锚连接件，属于建筑工程技术领域，具体为一种浆锚式钢筋连接套筒及其制造模具和制造方法。 The invention relates to a single steel bar and a steel bar sleeve slurry anchor connector of a prefabricated component, which belongs to the technical field of construction engineering, and specifically relates to a slurry anchor type steel bar connection sleeve and its manufacturing mold and manufacturing method.
背景技术 Background technique
在传统的现浇混凝土结构中，钢筋的连接多采用搭接连接、焊接连接或挤压套筒等机械连接方法，钢筋连接的施工较为复杂，而且必须在浇注混凝土前完成钢筋的连接，不能进行装配式施工。 In traditional cast-in-place concrete structures, mechanical connection methods such as lap joints, welded connections, or extruded sleeves are often used for the connection of steel bars. The construction of steel bar connections is relatively complicated, and the connection of steel bars must be completed before pouring concrete. Prefabricated construction.
现有的钢筋连接套筒为铸钢件、铸铁件，以及钢棒或厚壁钢管的机械切削方式加工件，对我国现有加工状况来说，若要达到对应的技术要求，加工制作成本均较高。 The existing steel connecting sleeves are steel castings, iron castings, and steel rods or thick-walled steel pipes processed by mechanical cutting. For the existing processing conditions in our country, if the corresponding technical requirements are to be met, the processing and manufacturing costs are low. higher.
发明内容 Contents of the invention
本发明的目的在于提供一种通过灌注水泥砂浆进行锚固的浆锚式钢筋连接套筒及其制造模具和制造方法，主要用于单体钢筋连接和装配式混凝土建筑预制构件之间的钢筋连接。两根连接钢筋的对接端通过连接套筒及灌注其内部空隙的硬化水泥砂浆结合形成一个连接体。这种连接件不需要焊接，不需要湿作业施工，而使单体钢筋或两构件中连接的钢筋达到等强对接。 The object of the present invention is to provide a grout-anchored steel bar connection sleeve anchored by pouring cement mortar and its manufacturing mold and manufacturing method, which are mainly used for the connection of single steel bars and steel bars between prefabricated concrete building components. The butt ends of two connecting steel bars are combined to form a connecting body through the connecting sleeve and the hardened cement mortar poured into the internal void. This kind of connecting piece does not need to be welded, and does not need wet construction, so that the single steel bar or the steel bars connected in two components can achieve equal strength butt joint.
本发明的技术方案是： Technical scheme of the present invention is:
一种浆锚式钢筋连接套筒，浆锚式钢筋连接套筒包括：套筒体、通孔、弹性橡胶密封圈、开口端、固定端、套筒凹槽、套筒凸肋、灌浆料入料孔、灌浆料出料孔，套筒体内有通孔，套筒体内的通孔两端装有弹性橡胶密封圈；套筒体的一端为用于连接后插入钢筋的开口端，套筒的另一端为开有中心孔的用于连接预埋钢筋的固定端；钢筋连接套筒的套筒体外表面沿轴向和圆周方向按间隔设有套筒凹槽，钢筋连接套筒的套筒体内表面沿轴向和圆周方向按间隔设有套筒凸肋；钢筋连接套筒内表面的套筒凸肋沿圆周方向非连续分布，套筒体的侧面外壁一端开有灌浆口，套筒体的侧面外壁另一端开有排气出浆口。 A slurry-anchor steel bar connection sleeve, the slurry-anchor steel bar connection sleeve includes: a sleeve body, a through hole, an elastic rubber sealing ring, an open end, a fixed end, a sleeve groove, a sleeve convex rib, and a grouting material inlet Material hole, grouting material discharge hole, there is a through hole in the sleeve body, elastic rubber sealing rings are installed at both ends of the through hole in the sleeve body; one end of the sleeve body is the open end for inserting the steel bar after connection, and the sleeve body The other end is a fixed end with a central hole for connecting pre-embedded steel bars; the sleeve outer surface of the steel bar connecting sleeve is provided with sleeve grooves at intervals along the axial and circumferential directions, and the sleeve body of the steel bar connecting sleeve is The surface is provided with sleeve ribs at intervals along the axial and circumferential directions; the sleeve ribs on the inner surface of the steel bar connecting sleeve are discontinuously distributed along the circumferential direction, and one end of the side outer wall of the sleeve body has a grouting port. The other end of the side outer wall is provided with an exhaust slurry outlet.
所述的浆锚式钢筋连接套筒，套筒凸肋为楔形，套筒凹槽与套筒凸肋的位置和形状相对应，套筒凸肋在圆周方向上为二至六个均布。 In the slurry-anchor type steel bar connection sleeve, the ribs of the sleeve are wedge-shaped, the slots of the sleeve correspond to the positions and shapes of the ribs, and two to six ribs are evenly distributed in the circumferential direction.
所述的浆锚式钢筋连接套筒，套筒凹槽和套筒凸肋沿圆周方向的宽度，不超过套筒凹槽和套筒凸肋之间平圆部分的宽度。 As for the slurry-anchored steel bar connecting sleeve, the width of the groove of the sleeve and the convex rib of the sleeve along the circumferential direction shall not exceed the width of the flat circular part between the groove of the sleeve and the convex rib of the sleeve.
所述的浆锚式钢筋连接套筒，套筒体为低碳钢无缝钢管径向挤压成型。 The slurry-anchor steel bar connection sleeve is formed by radial extrusion of a low-carbon steel seamless steel pipe.
用于浆锚式钢筋连接套筒的制造模具，挤压模具包括模头、芯模，模头、芯模的形状与作用关系相对应，形成套筒凹槽和套筒凸肋间隔式的成型模具。 It is used for the manufacturing mold of the slurry-anchor steel bar connection sleeve. The extrusion mold includes a die head and a mandrel. The shapes of the die head and the mandrel correspond to the function relationship, forming the groove of the sleeve and the rib of the sleeve at intervals. mold.
所述的制造模具，芯模包括芯模凹槽、芯模凸肋、芯模端头、芯模柱体，芯模柱体的外表面沿轴向和圆周方向按间隔设有芯模凸肋，圆周方向的芯模凸肋之间形成芯模凹槽，芯模柱体的一端为芯模端头。 In the manufacturing mold described above, the core mold includes a core mold groove, a core mold rib, a core mold end, and a core mold cylinder, and the outer surface of the core mold cylinder is provided with core mold ribs at intervals along the axial and circumferential directions , the mandrel groove is formed between the mandrel convex ribs in the circumferential direction, and one end of the mandrel cylinder is the mandrel end.
所述的制造模具，芯模凸肋为楔形，圆周方向的芯模凸肋外缘为弧形，该弧形直径与套筒体的内径相匹配，圆周方向的芯模凸肋为二至六个均布。 In the manufacturing mold described above, the convex ribs of the mandrel are wedge-shaped, the outer edge of the mandrel ribs in the circumferential direction is arc-shaped, and the diameter of the arc matches the inner diameter of the sleeve body, and the mandrel ribs in the circumferential direction are two to six evenly distributed.
所述的制造模具，模头包括模头凸肋、模头柱体、模头挤压位、模头初始位，模头柱体的外表面沿轴向一侧按间隔设有模头凸肋，模头凸肋的外缘为弧形；挤压前，在模头初始位处，模头凸肋与芯模的芯模凹槽相对应；挤压后，在模头挤压位处，模头凸肋与芯模的芯模凹槽相对应。 In the manufacturing mold described above, the die head includes a die head rib, a die head cylinder, a die head extrusion position, and a die head initial position, and the outer surface of the die head cylinder is provided with die head ribs at intervals along one side of the axial direction. , the outer edge of the rib of the die head is arc-shaped; before extrusion, at the initial position of the die head, the rib of the die head corresponds to the groove of the mandrel of the mandrel; after extrusion, at the extrusion position of the die head, The ribs of the die head correspond to the core mold grooves of the core mold.
利用所述制造模具的浆锚式钢筋连接套筒的制造方法，包括如下步骤： Utilize the manufacturing method of the slurry-anchored steel bar connecting sleeve of described manufacturing mold, comprise the steps:
（1）加工原材采用通用低碳钢无缝钢管； (1) The raw materials for processing are general-purpose low-carbon steel seamless steel pipes;
（2）采用挤压模具径向挤压制造工艺，加工套筒外表面的套筒凹槽和内表面的套筒凸肋； (2) The radial extrusion manufacturing process of the extrusion die is used to process the sleeve grooves on the outer surface of the sleeve and the sleeve ribs on the inner surface;
（3）完成挤压成型后，挤压模具的芯模转90～30度角后拔出。 (3) After the extrusion molding is completed, the mandrel of the extrusion mold is turned at an angle of 90 to 30 degrees and then pulled out.
所述的浆锚式钢筋连接套筒的制造方法，挤压形状、深度按套筒系列和对应的无缝管壁厚而不同，套筒外表面套筒凹槽的深度和内表面套筒凸肋的高度在1～10mm；外表面套筒凹槽和内表面套筒凸肋的列数为2～6列。 In the manufacturing method of the slurry-anchor steel bar connection sleeve, the extrusion shape and depth are different according to the sleeve series and the corresponding seamless pipe wall thickness. The depth of the sleeve groove on the outer surface of the sleeve and the convexity of the sleeve on the inner surface The height of the ribs is 1-10mm; the number of rows of sleeve grooves on the outer surface and ribs on the inner surface of the sleeve is 2-6.
本发明的有益效果是： The beneficial effects of the present invention are:
本发明采用浆锚式钢筋连接套筒对单体钢筋或预制装配式混凝土构件的钢筋进行连接。其特点是同直径系列钢筋连接和相近直径系列钢筋连接的套筒，通用低碳钢无缝钢管用专用挤压模具与机械挤压方式制成的套筒，专用模具按相应被连接件尺寸系列建立的不同系列具有相同加工特征的套筒，采用通用低碳钢无缝钢管、专用内外挤压模具、以及机械挤压方式的钢筋连接套筒制造方法。与国外采用的铸铁和国内目前采用的钢棒相比，本发明采用无缝钢管，不仅强度高、韧性好，而且质量稳定，材料用量少；采用径向对压制造工艺，与国外的铸造工艺和国内的钢棒切削工艺相比，机械化程度高，加工量少，生产效率高，从而可大幅度降低套筒成本。 The invention adopts a slurry-anchor type steel bar connecting sleeve to connect single steel bars or steel bars of prefabricated assembled concrete components. Its characteristics are the sleeves for connecting steel bars of the same diameter series and similar diameter series, and the sleeves made of special extrusion dies and mechanical extrusion methods for general low-carbon steel seamless steel pipes. The special dies are in series according to the size of the connected parts Different series of sleeves with the same processing characteristics have been established, and the manufacturing method of steel bar connection sleeves using general low-carbon steel seamless steel pipes, special internal and external extrusion dies, and mechanical extrusion is adopted. Compared with the cast iron used abroad and the steel rod currently used in China, the seamless steel pipe used in the present invention not only has high strength and good toughness, but also has stable quality and less material consumption; it adopts radial counter-pressure manufacturing technology, which is different from foreign casting Compared with the domestic steel bar cutting process, the process has a high degree of mechanization, less processing volume and high production efficiency, which can greatly reduce the cost of the sleeve.
附图说明 Description of drawings
图1（a）-（b）：本发明套筒示意图。其中，图1（a）为主视图；图1（b）为图1（a）中A-A剖面图。 Figure 1 (a)-(b): Schematic diagram of the sleeve of the present invention. Among them, Figure 1(a) is the main view; Figure 1(b) is the A-A section view in Figure 1(a).
图2（a）-（f）：本发明模具示意图。其中，图2（a）为芯模主视图；图2（b）为芯模左视图；图2（c）为芯模单侧图；图2（d）为模头主视图；图2（e）为模头左视图；图2（f）为模头单只单侧图。 Figure 2(a)-(f): Schematic diagram of the mold of the present invention. Among them, Fig. 2(a) is the front view of the mandrel; Fig. 2(b) is the left view of the mandrel; Fig. 2(c) is the one-side view of the mandrel; Fig. 2(d) is the front view of the die head; Fig. 2( e) is the left view of the die head; Figure 2(f) is a single side view of the die head.
图3（a）-（c）：本发明加工示意图。其中，图3（a）为模具单侧挤压主视图；图3（b）为挤压前状态；图3（c）为挤压后状态。 Figure 3(a)-(c): Schematic diagram of the processing of the present invention. Among them, Figure 3(a) is the front view of one-side extrusion of the mold; Figure 3(b) is the state before extrusion; Figure 3(c) is the state after extrusion.
图4：本发明钢筋连接示意图。 Fig. 4: Schematic diagram of steel bar connection in the present invention.
图中，1套筒体；2通孔；3弹性橡胶密封圈；4开口端；5固定端；6套筒凹槽；7套筒凸肋；8灌浆料入料孔（灌浆口）；9灌浆料出料孔（排气出浆口）；10芯模；11芯模凹槽；12芯模凸肋；13芯模端头；14芯模柱体；15模头；16模头凸肋；17模头柱体；18模头挤压位；19模头初始位；20被连接螺纹钢筋。 In the figure, 1 sleeve body; 2 through holes; 3 elastic rubber sealing ring; 4 open end; 5 fixed end; 6 sleeve groove; Grouting material discharge hole (exhaust slurry outlet); 10 mandrel; 11 mandrel groove; 12 mandrel rib; 13 mandrel end; 14 mandrel cylinder; 15 die head; 16 die head rib ; 17 Die head column; 18 Die head extrusion position; 19 Die head initial position; 20 Connected threaded steel bars.
具体实施方式 Detailed ways
如图1（a）-（b）所示，浆锚式钢筋连接套筒主要包括：套筒体1、通孔2、弹性橡胶密封圈3、开口端4、固定端5、套筒凹槽6、套筒凸肋7、灌浆料入料孔（灌浆口）8、灌浆料出料孔（排气出浆口）9等，套筒体1为低碳钢无缝钢管径向挤压成型，套筒体1内有通孔2，套筒体1内的通孔两端装有弹性橡胶密封圈3；套筒体1的一端为开口端4，用于连接后插入钢筋；套筒体1的另一端为开有中心孔的固定端5，用于连接预埋钢筋；钢筋连接套筒的套筒体1外表面沿轴向和圆周方向按一定间隔设有套筒凹槽6，增加套筒外表面与周围混凝土的粘结强度；钢筋连接套筒的套筒体1内表面沿轴向和圆周方向按一定间隔设有套筒凸肋7，以保证套筒内表面与水泥砂浆的粘结强度；钢筋连接套筒内表面的套筒凸肋7沿圆周方向非连续分布，以保证套筒内灌浆的流畅和不易滞留空气；套筒体1的侧面外壁一端开有灌浆口8，套筒体1的侧面外壁另一端开有排气出浆口9。 As shown in Figure 1(a)-(b), the slurry-anchor steel bar connection sleeve mainly includes: sleeve body 1, through hole 2, elastic rubber sealing ring 3, open end 4, fixed end 5, sleeve groove 6. Sleeve convex rib 7. Grouting material inlet hole (grouting port) 8. Grouting material outlet hole (exhaust grouting port) 9, etc. The sleeve body 1 is formed by radial extrusion of low carbon steel seamless steel pipe , there is a through hole 2 in the sleeve body 1, and an elastic rubber sealing ring 3 is installed at both ends of the through hole in the sleeve body 1; one end of the sleeve body 1 is an open end 4, which is used for inserting steel bars after connection; the sleeve body The other end of 1 is a fixed end 5 with a central hole, which is used to connect pre-embedded steel bars; the outer surface of the sleeve body 1 of the steel bar connection sleeve is provided with sleeve grooves 6 at certain intervals in the axial and circumferential directions, increasing The bonding strength between the outer surface of the sleeve and the surrounding concrete; the inner surface of the sleeve body 1 of the steel bar connection sleeve is provided with sleeve ribs 7 at certain intervals along the axial and circumferential directions to ensure the bonding between the inner surface of the sleeve and the cement mortar. Bonding strength; the ribs 7 on the inner surface of the steel bar connecting the sleeve are discontinuously distributed along the circumferential direction to ensure smooth grouting in the sleeve and not easy to trap air; one end of the side outer wall of the sleeve body 1 is provided with a grouting port 8, The other end of the side outer wall of the sleeve body 1 is provided with an exhaust slurry outlet 9 .
本实施例中，套筒凸肋7为楔形，套筒凹槽6与套筒凸肋7的位置和形状相对应，在圆周方向上为三个均布。 In this embodiment, the sleeve ribs 7 are wedge-shaped, and the sleeve grooves 6 correspond to the positions and shapes of the sleeve ribs 7 , and three are evenly distributed in the circumferential direction.
如图2（a）-（c）所示，芯模10包括芯模凹槽11、芯模凸肋12、芯模端头13、芯模柱体14等，芯模柱体14的外表面沿轴向和圆周方向按一定间隔设有芯模凸肋12，圆周方向的芯模凸肋12之间形成芯模凹槽11，芯模柱体14的一端为芯模端头13，芯模端头13的作用是卡具夹持该处，旋转抽脱芯模。本发明中，芯模凹槽11所指位置为：套筒凹槽列和套筒凸肋列之间的平圆部分。 As shown in Figure 2(a)-(c), the core mold 10 includes a core mold groove 11, a core mold rib 12, a core mold end 13, a core mold cylinder 14, etc., and the outer surface of the core mold cylinder 14 Mandrel convex ribs 12 are arranged at certain intervals along the axial and circumferential directions, and mandrel grooves 11 are formed between the mandrel ribs 12 in the circumferential direction. One end of the mandrel cylinder 14 is the mandrel end 13, and the mandrel The effect of the end 13 is that the clamp clamps this place, and the mandrel is extracted by rotation. In the present invention, the core mold groove 11 refers to the position: the flat circular part between the groove row of the sleeve and the rib row of the sleeve.
本实施例中，圆周方向的芯模凸肋12为三个均布。芯模凸肋12为楔形，圆周方向的芯模凸肋12外缘为弧形，该弧形直径与套筒体1的内径相匹配。 In this embodiment, there are three mandrel ribs 12 uniformly distributed in the circumferential direction. The mandrel rib 12 is wedge-shaped, and the outer edge of the mandrel rib 12 in the circumferential direction is arc-shaped, and the diameter of the arc matches the inner diameter of the sleeve body 1 .
如图2（d）-（f）和图3所示，模头15包括模头凸肋16、模头柱体17、模头挤压位18、模头初始位19等，模头柱体17的外表面沿轴向一侧按一定间隔设有模头凸肋16，模头凸肋16的外缘为弧形。挤压前，在模头初始位19处，模头凸肋16与芯模10的芯模凹槽11相对应。挤压后，在模头挤压位18处，模头凸肋16与芯模10的芯模凹槽11相对应。 As shown in Figure 2(d)-(f) and Figure 3, the die head 15 includes the die head rib 16, the die head cylinder 17, the die head extrusion position 18, the die head initial position 19, etc., the die head cylinder The outer surface of 17 is provided with die head ribs 16 at certain intervals along one axial side, and the outer edge of die head ribs 16 is arc-shaped. Before extrusion, at the initial position 19 of the die head, the rib 16 of the die head corresponds to the groove 11 of the core die 10 . After extrusion, at the extrusion position 18 of the die head, the rib 16 of the die head corresponds to the groove 11 of the core die 10 .
如图3（a）-（c）所示，挤压模具包括模头15、芯模10，模头15、芯模10的形状与作用关系相对应，形成套筒凹槽和套筒凸肋间隔式的成型模具，可使套筒成型准确，拔模简易，且可保证连接的刚度在控制范围以内。套筒成型凸凹分布径向均匀，使连接件受力均匀。由于采用模具式挤压加工，套筒内凸起可精确控制来满足不同直径和强度的钢筋的连接要求。为保证加工能力，模具采用（高碳合金）工具钢材料并在完成形状加工后，进行表面高频淬火处理（厚度在0.2～0.5mm）。 As shown in Figure 3(a)-(c), the extrusion die includes a die head 15 and a mandrel 10. The shapes of the die head 15 and the mandrel 10 correspond to their functional relationships, forming sleeve grooves and sleeve ribs The spaced forming mold can make the sleeve form accurately, draw the mold easily, and ensure the rigidity of the connection within the control range. The convex and concave distribution of the sleeve forming is uniform in the radial direction, so that the connecting parts are evenly stressed. Due to the die-type extrusion processing, the protrusions in the sleeve can be precisely controlled to meet the connection requirements of steel bars of different diameters and strengths. In order to ensure the processing capacity, the mold is made of (high carbon alloy) tool steel material, and after the shape processing is completed, the surface is subjected to high-frequency quenching treatment (thickness is 0.2-0.5mm).
挤压形状、深度按套筒系列和对应的无缝管壁厚而不同，套筒外表面套筒凹槽6的深度和内表面套筒凸肋7（简称表面凸凹）的高度在1～10mm。 The extrusion shape and depth vary according to the sleeve series and the corresponding seamless pipe wall thickness. The depth of the sleeve groove 6 on the outer surface of the sleeve and the height of the sleeve convex rib 7 on the inner surface (abbreviated as surface convex and concave) are between 1 and 10mm. .
外表面套筒凹槽6和内表面套筒凸肋7（简称表面凸凹）的列数（沿圆周方向的个数）可为2～6列。完成挤压成型后，芯模转90～30度角后即可拔出。图3所示实施例中为3列，完成挤压成型后，芯模转60度角后拔出。 The number of columns (the number along the circumferential direction) of the sleeve grooves 6 on the outer surface and the sleeve ribs 7 on the inner surface (abbreviated as surface bumps) can be 2 to 6 rows. After the extrusion molding is completed, the mandrel can be pulled out after turning an angle of 90-30 degrees. In the embodiment shown in Fig. 3, there are 3 columns. After the extrusion molding is completed, the mandrel is pulled out after turning a 60-degree angle.
灌浆料入料孔（灌浆口）8、灌浆料出料孔（排气出浆口）9在套筒挤压成型后，再在套筒无挤压突起处按不同连接尺寸系列切割出，并焊接或螺丝扣接管头。套筒两端口按不同要求处理口径大小和设置密封圈后套筒完成。 The grouting material inlet hole (grouting port) 8, the grouting material outlet hole (exhaust grouting port) 9, after the sleeve is extruded, are cut out according to different connection size series at the non-extruded protrusion of the sleeve, and Weld or turnbuckle fittings. The two ports of the sleeve are processed according to different requirements on the size of the caliber and the sleeve is completed after the sealing ring is set.
如图4所示，使用本发明的钢筋连接套筒进行钢筋等强对接连接，套筒体1的一端为用于连接后插入钢筋的开口端4，套筒体1的另一端为开有中心孔的用于连接预埋钢筋的固定端5；被连接螺纹钢筋20（插入钢筋）从开口端4进入套筒体1，与预埋钢筋对接，通过灌浆料入料孔（灌浆口）8注入水泥砂浆，水泥砂浆充满后，经灌浆料出料孔（排气出浆口）排出。 As shown in Figure 4, use the reinforcing bar connecting sleeve of the present invention to carry out strong butt joint connection of reinforcing bars, one end of the sleeve body 1 is the open end 4 for inserting the reinforcing bar after connection, and the other end of the sleeve body 1 is a central The fixed end 5 of the hole is used to connect the embedded steel bar; the connected threaded steel bar 20 (inserted steel bar) enters the sleeve body 1 from the open end 4, docks with the embedded steel bar, and injects it through the grouting material inlet hole (grouting port) 8 Cement mortar, after the cement mortar is filled, it is discharged through the grouting material discharge hole (exhaust grout outlet).
图中，以下符号分别代表： In the figure, the following symbols represent:
a套筒凹槽6之间或套筒凸肋7之间或芯模凸肋12之间或模头凸肋16之间的间距； a spacing between sleeve grooves 6 or sleeve ribs 7 or core mold ribs 12 or die head ribs 16;
b芯模凸肋12的上表面沿套筒轴线方向的宽度； b the width of the upper surface of the mandrel rib 12 along the axial direction of the sleeve;
b2模头凸肋16的上表面沿套筒轴线方向的宽度； b2 the width of the upper surface of the die head rib 16 along the axial direction of the sleeve;
c芯模凸肋12的上表面与下表面的一侧宽度差； The width difference between the upper surface and the lower surface of the c mandrel convex rib 12;
c2模头凸肋16的上表面与下表面的一侧宽度差； The width difference between the upper surface and the lower surface of the c2 die convex rib 16;
D套筒体1的外径； D the outer diameter of the sleeve body 1;
D1芯模凸肋12圆周方向的外径； D1 The outer diameter of the mandrel rib 12 in the circumferential direction;
D2芯模端头13的外径； The outer diameter of D2 mandrel end 13;
D3模头凸肋16的外径； The outer diameter of D3 die head convex rib 16;
H芯模凸肋12沿圆周方向的宽度； The width of H mandrel convex rib 12 along the circumferential direction;
H1模头凸肋16沿圆周方向的宽度； The width of H1 die head rib 16 along the circumferential direction;
d1芯模柱体14的直径； The diameter of d1 mandrel cylinder 14;
d2模头柱体17的直径； The diameter of d2 die head cylinder 17;
d4灌浆料入料孔（灌浆口）8或灌浆料出料孔（排气出浆口）9的内径； d4 The inner diameter of the grouting material inlet hole (grouting port) 8 or the grouting material outlet hole (exhaust grouting port) 9;
d′开口端4安装弹性橡胶密封圈3后的内径； d' The inner diameter of the open end 4 after the elastic rubber sealing ring 3 is installed;
d″固定端5安装弹性橡胶密封圈3后的内径； d "Inner diameter after the elastic rubber sealing ring 3 is installed at the fixed end 5;
e模头凸肋16之间的根部间距； The root spacing between e-die ribs 16;
L套筒体1的长度； The length of L sleeve body 1;
L1芯模10的长度； The length of L1 mandrel 10;
L2模头15的长度； The length of L2 die head 15;
L3插入钢筋在套筒体1的长度； L3 inserts the length of the steel bar in the sleeve body 1;
L4预埋钢筋在套筒体1的长度； The length of L4 pre-embedded steel bars in the sleeve body 1;
L5灌浆料入料孔（灌浆口）8中心线与开口端4的距离； L5 The distance between the center line of the grouting material inlet hole (grouting port) 8 and the opening end 4;
L6灌浆料出料孔（排气出浆口）9中心线与开口端4的距离； L6 The distance between the center line of the grouting material outlet hole (exhaust grout outlet) 9 and the opening end 4;
t芯模凸肋12的上表面与下表面的另一侧宽度差； The upper surface of t mandrel rib 12 and the other side width difference of lower surface;
t2模头凸肋16的上表面与下表面的另一侧宽度差； t2 difference in width between the upper surface of the die head convex rib 16 and the other side of the lower surface;
本发明中，钢筋连接套筒的制造方法：加工原材采用通用低碳钢无缝钢管；采用径向挤压制造工艺加工套筒外表面的套筒凹槽6和内表面的套筒凸肋7；套筒凹槽6和套筒凸肋7沿圆周方向的宽度不超过套筒凹槽6和套筒凸肋7之间平圆部分的宽度，以保证能够旋转抽芯。 In the present invention, the manufacturing method of the steel bar connection sleeve: the processing raw material adopts a general-purpose low-carbon steel seamless steel pipe; the radial extrusion manufacturing process is used to process the sleeve groove 6 on the outer surface of the sleeve and the sleeve convex rib on the inner surface 7. The width of the sleeve groove 6 and the sleeve rib 7 along the circumferential direction does not exceed the width of the flat circle part between the sleeve groove 6 and the sleeve rib 7, so as to ensure that the core can be rotated.
实施例结果表明，本发明用通用无缝钢管为原材通过机械挤压方式，制成单体钢筋或装配式建筑构件钢筋连接用灌浆锚固式钢筋连接套筒，使连接性能、性价比达到或超过对应的铸钢、铸铁或机加工式的连接套筒。其加工、制作更简单、方便和高效，易于控制产品质量。 The results of the examples show that the present invention uses a general-purpose seamless steel pipe as a raw material to make a single steel bar or a grouting anchor type steel bar connection sleeve for the steel bar connection of an assembled building component through mechanical extrusion, so that the connection performance and cost performance can reach or exceed Corresponding cast steel, cast iron or machined connecting sleeves. Its processing and production are simpler, more convenient and more efficient, and it is easier to control product quality.
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| CN104314240A (en) * | 2014-11-23 | 2015-01-28 | 沈阳建筑大学 | Grouting anchor type rebar connection sleeve and manufacturing method thereof |
| CN105926469B (en) * | 2016-05-24 | 2017-10-03 | 舟山市宏达交通工程有限责任公司 | The bridge strengthening device and technique of built-in reinforcement |
| CN108724440A (en) * | 2018-07-10 | 2018-11-02 | 江苏金贸科技发展有限公司 | Slip casting sleeve blind hole spiral mould when wallboard reserved steel bar connects |
| CN108678145A (en) * | 2018-07-21 | 2018-10-19 | 李藏柱 | Sleeve, prefabricated components connector, prefabricated components and prefabricated components assembly |
| CN108661244A (en) * | 2018-08-01 | 2018-10-16 | 阳光学院 | A kind of reinforced bar sleeve connector |
| CN112049331A (en) * | 2020-09-08 | 2020-12-08 | 衡阳市伟力钢筋机械有限公司 | A reinforcing bar mechanical connection sleeve for assembled concrete is connected by force |
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