阅读说明：本技术 建筑用装配式集成框架 (Assembled integrated frame for building ) 是由 罗大威 于 2018-05-29 设计创作，主要内容包括：建筑用装配式集成框架,包括：立柱、横梁、斜支撑、节点构件,其改进是：梁柱节点构件由一组十字形主板、贯穿十字形主板组的一字形插板组构成三维十字体,主板组上、下端作为立柱连接端,主板组左右端及插板组两端为横梁连接端；横梁端部方筒形端头套在节点构件梁连接端用螺栓连接,立柱对接或套在节点构件的连接端。梁柱节点构件上安装铰轴和拉梁部件；横梁端头有铰接部件,横梁上有梁、柱对折后与拉梁部件对应对拉部件；斜支撑节点构件两个紧固箍,紧固箍侧向连接轴组成。积极效果是：梁柱节点构件强度高,柱及梁与节点构件连接受力均衡,框架的整体强度高。框架在部分拆解后能形成并拢组合体,便于转运重建,实现了集成框架的技术升级,拓宽了使用领域。(assembled integrated frame for building includes: stand, crossbeam, bearing diagonal, node component, its improvement is: the beam-column joint component is a three-dimensional cross-shaped body formed by a group of cross-shaped main boards and a linear plugboard group penetrating through the cross-shaped main board group, the upper end and the lower end of the main board group are used as upright post connecting ends, and the left end and the right end of the main board group and the two ends of the plugboard group are beam connecting ends; the square tubular end socket at the end part of the cross beam is sleeved at the connecting end of the beam of the node member and connected by a bolt, and the upright post is butted or sleeved at the connecting end of the node member. The beam column node member is provided with a hinge shaft and a straining beam part; the end of the beam is provided with a hinged part, and the beam is provided with a beam and a column which are folded in half and correspond to the pull beam part; the inclined support node component comprises two fastening hoops and a lateral connecting shaft of the fastening hoops. The positive effects are as follows: the beam column node member has high strength, the connection stress of the column and the beam and the node member is balanced, and the overall strength of the frame is high. The frame can form the assembly of closing together after partial disassembling, is convenient for transport and rebuilds, has realized the technological upgrading of integrated frame, has widened application range.)

1. Assembled integrated frame for building includes: the beam column node component of the beam column is connected to stand, crossbeam, bearing diagonal, roof beam and post intersection, and the bearing diagonal is connected the bearing diagonal node component of bearing diagonal and roof beam or post with the intersection of roof beam or post, characterized by:

The beam-column joint component is a three-dimensional cross-shaped body formed by a group of cross-shaped main boards and a group of in-line plugboards penetrating through the group of cross-shaped main boards, wherein the length direction of a strip-shaped hole for assembling the plugboards on the main boards is in the cross-shaped vertical direction of the main boards, the intersection of the main boards and the plugboards is welded and connected, the upper end and the lower end of the cross-shaped main board group are used as upright post connecting ends, and the left end and the right end of the cross-shaped main board; screw holes penetrating through the plate groups are distributed on the main plate group and the plug plate group, support columns are arranged among the plates at the screw holes, shaft center holes are formed in the support columns, the shaft center holes of the support columns are overlapped with the through holes in the plate groups, the plate groups are fastened into a whole by using the screws penetrating through the plate groups and the support columns among the plate groups, and the side plate groups of the plate groups covering the plate gaps are welded on the peripheral surfaces of the plate gaps of the plate groups to form square cylindrical beam and column connecting ends on the node components;

The end part of the beam is in a square cylinder shape, the peripheral surface of the beam-end square cylinder is provided with a section of lower side surface, the length of the beam-end lower side surface corresponds to the length of the beam connecting end of the beam-column node member, two side surfaces of the beam end head are provided with bolt holes connected with the beam connecting end of the node member, the beam end head is sleeved on the beam connecting end of the node member when a frame is formed, and the beam is fastened on the node member by using bolts penetrating through the bolt holes on the beam end head and the bolt holes on the beam connecting end of the node member;

the end of the upright column is in a square cylinder shape and is butted or sleeved with the connecting end of the cylindrical column above the beam column node member, and the upright column is butted or sleeved on the column connecting end of the node member;

In the connecting structure of the column connecting end of the column end sleeve joint component, the column is fastened on the joint main body by a screw rod which passes through the column connecting end of the column and the upper column of the joint component; in the structure that the connecting ends of the upright columns and the upper columns of the node main body are in butt joint, connecting members for mutually inserting the upright columns and the node members are arranged inside the butt joint.

2. The fabricated integrated frame for construction as set forth in claim 1, wherein: the two sides of the side panel on the main board group and the side panel on the plug board group of the beam column joint component are welded with the edge of the outer panel of the plate group, and the middle part of the panel surface of the side panel is spot-welded with the edge of the inner panel of the plate group through a through-welding hole; the adjacent main board side panels and the plug board side panels are connected into a whole; the picture peg side panel of relative mainboard face is located the one end of mainboard, has the one section of being connected with the mainboard face that the right angle bending goes out.

3. The fabricated integrated frame for construction as set forth in claim 1, wherein: the plate group side plate on the upper surface of the beam connecting end of the beam column node member extends to the end covering the beam connecting end, the plate group side plate on the lower surface of the beam connecting end extends over the plate group end, the extending part is used as a beam supporting plate, the front end of the beam supporting plate is provided with a screw hole, the beam supporting plate is connected with a screw on the lower side surface of a beam, the plate group side plate on the upper side surface of the beam connecting end of the node member is provided with a screw hole, the lower end of the screw hole is welded with a screw cap or a sleeve with an internal thread, and the screw penetrating through the plate on the upper side.

4. the fabricated integrated frame for construction as set forth in claim 1, wherein: the end of the beam connecting end in the beam column node component is an inclined plane gradually reduced towards the end, and the longitudinal included angle between the inclined plane and the beam connecting end is preferably 45 degrees.

5. The fabricated integrated frame for construction as set forth in claim 1, wherein: in the butt joint structure of the column and the beam column node component, a section of tenon extends out of the end of the column, the upper end and the lower end of a main board set in the beam column node component form a sleeve through the height difference of an outer layer board and an inner layer board, the tenon at the end of the column is inserted into the sleeve, a sleeve is welded at the end of the tenon, and the inserted column of the inserted sleeve is welded at the end of the main board in the middle of the inner layer.

6. The fabricated integrated frame for construction as set forth in claim 1, wherein: the upright posts, the cross beams and the inclined supports are made of sectional materials consisting of rectangular outer tubes, rectangular core tubes and connecting rib plates between four corners of the rectangular core tubes and four corners of the outer tubes.

7. The fabricated integrated frame for construction as set forth in claim 1, wherein: the upper side of the beam connecting end of the beam column node member and the intersection angle area of the beam connecting end are provided with hinge seat, the hinge seat is provided with a hinge shaft parallel to the surface of the column connecting end of the node main body and the surface of the beam connecting end, and the upper part of the column connecting end of the column above the node member or the column is provided with a beam pulling part with a hole; the end of the beam is provided with a hinged part matched with a hinged shaft on the node member, the upper surface of the beam is provided with a perforated counter-pulling part corresponding to a beam seat or a beam part on the node member or on the upright post after the beam and the column are folded, and after the beam is lifted to be close to the upright post, a pin or a guy cable is penetrated between the beam part and the counter-pulling part.

8. The fabricated integrated frame for construction as set forth in claim 7, wherein: the hinge parts on the beam end are shaft hole plates fixed on two sides of the beam end, the shaft hole plates are provided with hinge shaft holes above the upper surface of the beam, the tie beam parts on the node member or on the upright column are tie beam seats or tie beam ear plates, and the counter pull parts on the beam are counter pull seats or counter pull ear plates.

9. The fabricated integrated frame for construction as set forth in claim 1, wherein: the inclined support node component consists of two rectangular fastening hoops and two rectangular fastening hoop lateral connecting shafts, wherein the fastening hoops are symmetrically divided into two parts with a right-angle space by diagonal lines, fastening hoop wall plates at the joint of the two parts are provided with corresponding extending folded-angle fins, screw holes are formed in the fins, fastening hoop tightening screws penetrate through the opposite wings of the two parts, the two fastening hoop connecting shafts penetrate through the side walls of the fastening hoops, the end of the connecting shaft extending into the fastening hoops is provided with a radial flange, and a separating ring is sleeved on the connecting shaft between the two fastening hoops.

10. The fabricated integrated frame for construction as set forth in claim 9, wherein: the inner surface of the plane of the wall plate of the fastening hoop, into which the connecting shaft extends, in the inclined supporting node component is attached with a rubber pad.

Technical Field

The invention belongs to the field of buildings, and particularly relates to a framework for building construction and serving as a component part of a fixed building.

Background

The existing fabricated integrated frame for construction comprises a scaffold in building construction, a construction support frame in building engineering, a large-scale equipment manufacturing support platform frame, an equipment mounting operation frame and the like.

Integrated frames are temporary frames, except for a few that are permanently used as part of the construct. The temporary frame is mainly a steel structure frame. Except that a few of the joints formed by welding the intersection of the beams and the columns form an integral frame, most of the joints are formed by connecting the beams and the columns by detachable locking and attaching components at the intersection of the beams and the columns.

The welded frame has the advantages of poor interchangeability, limited specification, high beam column density, low component reuse rate, regional flaws of welding spots, reduced local strength of materials, easy generation of stress concentration areas of welding seams, frame deformation caused by the easy generation of stress concentration areas, cracking of the welding seams, low safety performance, much manpower investment in construction and high cost.

The integrated frame is formed by locking sectional beams and columns by connecting fasteners which can be assembled and disassembled, and the most common type belongs to a scaffold. The detachable beam and column connecting lock accessory is called as a 'fastener' in the industry, the fastener is used for clamping a circular tube beam, column or inclined support through a bolt, and the beam, column and inclined support are fastened and connected to form an integral frame. The frame material of the pipe is clamped and connected by the fastener, the pipe wall is easy to deform, the nodes belong to semi-rigid connection, the rigidity of the nodes is related to a plurality of factors of the quality of the fastener and the installation quality, and the difference of the connection performance of each node is large. Creating an initial as-built defect and an in-service secondary defect. The expression is as follows: the initial bending and corrosion of the rod piece, the erection of size error, eccentric loading, increased buckling value, short leg formation and eccentric instability caused by deformation and displacement.

Based on the commercial production of the fastener of the integrated frame represented by the scaffold and the tubular beams and columns, in order to reduce the construction cost, the circulation use of the scaffold is a normal state, the scaffold is used in circulation, the scaffold is repeatedly disassembled and assembled in circulation, and each member is involved, and the members are easy to lose in the circulation.

the existing assembled integrated frame uses materials and a connection structure at nodes, so that the upgrading and the application field expansion of the integrated frame are restrained. In the technical process of improving the structural performance of the assembled integrated frame and expanding the application range of the assembled integrated frame, the beams and the columns are only selected, and the technical difficulty lies in the structural innovation of the node components.

Disclosure of Invention

The invention aims to provide a fabricated integrated frame for buildings, which is used as a construction frame of building facilities such as buildings, bridges, tunnels, ships, urban elevated roads and the like or as an integral component of a building and overcomes the defects of the conventional fabricated integrated frame.

The inventive integrated framework comprises: the improvement that stand, crossbeam, bearing diagonal, roof beam and post junction connection beam column's beam column node component, bearing diagonal and the intersection point of roof beam or post connect bearing diagonal and the bearing diagonal node component of roof beam or post is that:

The beam-column joint component is a three-dimensional cross-shaped body formed by a group of cross-shaped main boards and a group of in-line plugboards penetrating through the group of cross-shaped main boards, wherein the length direction of a strip-shaped hole for assembling the plugboards on the main boards is in the cross-shaped vertical direction of the main boards, the intersection of the main boards and the plugboards is welded and connected, the upper end and the lower end of the cross-shaped main board group are used as upright post connecting ends, and the left end and the right end of the cross-shaped main board; screw holes penetrating through the plate groups are distributed on the main plate group and the plug plate group, support columns are arranged among the plates at the screw holes, shaft center holes are formed in the support columns, the shaft center holes of the support columns are overlapped with the through holes in the plate groups, the plate groups are fastened into a whole by using the screws penetrating through the plate groups and the support columns among the plate groups, and the side plate groups of the plate groups covering the plate gaps are welded on the peripheral surfaces of the plate gaps of the plate groups to form square cylindrical beam and column connecting ends on the node components;

The end part of the beam is in a square cylinder shape, the peripheral surface of the beam-end square cylinder is provided with a section of lower side surface, the length of the beam-end lower side surface corresponds to the length of the beam connecting end of the beam-column node member, two side surfaces of the beam end head are provided with bolt holes connected with the beam connecting end of the node member, the beam end head is sleeved on the beam connecting end of the node member when a frame is formed, and the beam is fastened on the node member by using bolts penetrating through the bolt holes on the beam end head and the bolt holes on the beam connecting end of the node member;

The end of the upright column is in a square cylinder shape and is butted or sleeved with the connecting end of the cylindrical column above the beam column node member, and the upright column is butted or sleeved on the column connecting end of the node member;

in the connecting structure of the column connecting end of the column end sleeve joint component, the column is fastened on the joint main body by a screw rod which passes through the column connecting end of the column and the upper column of the joint component; in the structure that the connecting ends of the upright columns and the upper columns of the node main body are in butt joint, connecting members for mutually inserting the upright columns and the node members are arranged inside the butt joint.

in order to improve the overall strength of the node component, the two sides of the side panel on the main board group and the side panel on the plug board group which form the beam-column node component are welded with the edge of the outer panel of the plate group, and the middle part of the panel surface of the side panel is connected with the edge of the inner panel of the plate group through a through-welding hole in a spot welding manner; the adjacent main board side panels and the plug board side panels are connected into a whole; the picture peg side panel of relative mainboard face is located the one end of mainboard, has the one section of being connected with the mainboard face that the right angle bending goes out.

In order to improve the strength of the beam connecting end of the node member and the connecting strength of the beam and the node main body, the plate group side plate on the upper surface of the beam connecting end of the beam column node member extends to the end covering the beam connecting end, the plate group side plate on the lower surface of the beam connecting end extends over the plate group end, the extending part is used as a beam supporting plate, the front end of the beam supporting plate is provided with a screw hole, the beam supporting plate is connected with the lower side surface of the beam through a screw, the plate group side plate on the upper side of the beam connecting end of the node member is provided with a screw hole, the lower end of the screw hole is welded with a screw cap or a sleeve with an internal thread, and.

The end of the beam connecting end in the beam column node main body is an inclined plane which gradually reduces towards the end part according to the stress state of the beam connecting end in the node main body, and the inclined plane and the longitudinal included angle of the beam connecting end are preferably 45 degrees.

In order to improve the connection strength of the upright post and the beam-column node component, in the structure of butt joint of the post and the beam-column node component, a section of tenon extends out of the end of the post, the upper end and the lower end of a main board group in the beam-column node component form a sleeve through the height difference of an outer layer board and an inner layer board, the tenon of the end of the post is inserted into the sleeve, a sleeve is welded at the end of the tenon, and the end of the main board in the middle position of the inner layer is welded with the inserted post of the inserted sleeve.

In order to improve the self strength of the materials for the upright post, the cross beam and the diagonal bracing, the upright post, the cross beam and the diagonal bracing adopt sectional materials consisting of rectangular outer tubes, rectangular core tubes and connecting rib plates between four corners of the rectangular core tubes and four corners of the outer tubes.

In order to realize mutual closing under the condition that the beam and the upright post are not completely disassembled, the integrated frame is convenient to transfer and assemble and combine in circulation and use at different places, and the loss of components is avoided. The invention further optimizes that: a hinge shaft seat is arranged in the intersection angle area of the upper side of the beam connecting end of the node member and the column connecting end, a hinge shaft parallel to the column connecting end surface and the beam connecting end surface of the node main body is arranged on the hinge shaft seat, and a beam pulling part with a hole is arranged on the upper part of the column connecting end of the upright column above the node member or on the upright column; the end of the beam is provided with a hinged part matched with a hinged shaft on the node member, the upper surface of the beam is provided with a perforated counter-pulling part corresponding to a beam pulling part on the node member or on the upright post after the beam and the post are folded, and after the beam is lifted to be close to the upright post, a pin or a guy cable is penetrated between the beam pulling part and the counter-pulling part.

The hinge parts on the end head of the cross beam are preferably fixed on shaft hole plates on two sides of the end head of the cross beam, and the position of the shaft hole plate above the upper surface of the beam is provided with a hinge shaft hole; the beam-column node member or the upright column upper beam part is a beam seat or a beam lug, and the counter-pulling part on the cross beam is a counter-pulling seat or a counter-pulling lug.

In order to ensure the connection strength of the diagonal brace and a beam or a column, the diagonal brace joint component consists of two rectangular fastening hoops surrounded by steel plates and two lateral connecting shafts of the rectangular fastening hoops, the fastening hoops are symmetrically divided into two parts with a right-angle space in a diagonal line mode, fastening hoop wall plates at the joint of the two parts are provided with corresponding extending folded-angle fins, screw holes are formed in the fins, fastening hoop tightening screws penetrate through the opposite fins of the two parts of fastening hoops, the two fastening hoop connecting shafts penetrate through the side walls of the fastening hoops, the end heads of the connecting shafts extending into the fastening hoops are provided with radial flanges, and a separating ring is sleeved on the connecting shaft between the two fastening hoops.

In order to provide a flexible and resilient clamping force between the clamp and the clamped member, rubber pads are attached to the inner surface of the inclined strut node member at the plane of the clamp wall plate into which the connecting shaft extends.

The invention has the advantages that: the inserting plate type node member has higher strength, the connection and fastening connection relationship between the upright post and the cross beam and the node member is balanced in stress, the integral strength of a beam frame is ensured, the frame assembly requirements of large span, strong shock resistance and hurricane resistance can be met, the hinge connection relationship between the cross beam and the node member and the interconnection structure after the cross beam and the upright post are closed together can be formed after the frame is disassembled, the closing assembly of the node member, the upright post and a group of cross beams can be formed, the assembly workload of a remote reconstruction frame is reduced, the transfer is convenient, the dissipation of the member is avoided, and the reuse cost is reduced. The technical upgrading of the integrated frame is realized, the use field of the integrated frame is widened, and the requirements of construction in current construction, a main body structure of a tall building, structural supports, bearing supports, movable barracks and other places needing frame structures are met.

Drawings

Fig. 1 is an overall structure diagram of an integrated frame according to the present invention.

Fig. 2 is a three-dimensional view of a node cross three-dimensional body formed by a cross main plate group and a straight-line inserting plate group.

figure 3 is an exploded view of a node, beam, and column assembled to a node member.

Fig. 4 is a detailed exploded view of a node, beam, and column assembled to a node member.

Fig. 5 is a side face plate view of the plate pack covering the plate gap on the node body in the present invention.

Fig. 6 is an overall front view of a node, beam, column assembled to a node member.

Fig. 7 is a drawing in which the beams and columns are folded back and brought together after a part of the connecting pieces of the four cross beams and the node members are disassembled.

Fig. 8 is a drawing in which the beams and the columns are folded back and brought together after a part of the connecting pieces of the three beams and the node members are detached.

fig. 9 is an overall perspective view of a node, four beams, two columns assembled on a node member.

FIG. 10 is a perspective view of a node, four beams and one column combination on a node member in the middle of the top layer of the frame.

FIG. 11 is a perspective view of a combination of nodes, two beams, and a column on a node member at a corner of a top layer of a frame.

Fig. 12 is a perspective view of a diagonal bracing node member according to the present invention.

Fig. 13 is an exploded view of a bracing node member according to the invention.

Detailed Description

Referring to fig. 1, the integrated framework of the invention comprises: the beam-column joint member comprises an upright column 1, a cross beam 2, an inclined support 3, a beam-column joint member 4 for connecting a beam-column at the intersection point of the beam and the column, and an inclined support joint member 5 for connecting an inclined support and the beam or the column at the intersection point of the inclined support and the beam or the column.

Referring to fig. 2, the beam-column joint member 4 is a joint cross three-dimensional body formed by a group (three pieces) of cross-shaped main boards 4-1 and a group (three pieces) of in-line plugboards 4-2 penetrating through the cross-shaped main board group, wherein the length direction of strip-shaped holes for assembling the plugboards 4-2 on the main boards 4-1 is in the cross-shaped vertical direction, the main boards and the plugboards are welded at the intersection of the main boards 4-1 and the plugboards 4-2 which can be welded, the upper end and the lower end of the cross-shaped main board group are used as upright post connecting ends, and the left end and the right end of the cross-shaped main board group and two; the end of the beam connecting end is an inclined plane which gradually reduces towards the end, and the longitudinal included angle between the inclined plane and the beam connecting end is preferably 45 degrees.

Screw holes penetrating through the plate set are distributed on the main plate set and the plug plate set, plate surface mutual position positioning support pillars 4-3 are arranged among the plates at the screw holes, shaft center holes are arranged on the support pillars, the shaft center holes of the support pillars 4-3 are overlapped with the through holes on the plate set, the support pillars 4-3 are fixed among the plates through welding points of spot welding with the plate surfaces, the plate set is fastened into a whole through the screw rods penetrating through the plate set and the support of the plate set,

Referring to fig. 3, 4, 5, 6, 7 and 8, plate group side plates 4-4 and 4-5 (the side plate of the upper side of the beam connecting end and the side plate of the column connecting end above the beam connecting end are 4-4, the side plate of the lower side of the beam connecting end and the side plate of the column connecting end below the beam connecting end are 4-5) are welded on the circumferential surface of each plate gap on the plate groups 4-1 and 4-2, to form a square cylindrical structure of the beam connecting end of the node main member and the beam connecting end, the cross-shaped main plate groups are connected into a whole by the inner side plates in four included angle ranges, the side plate covering the gap of the insert plate group faces one end of the cross-shaped main plate, a section which is folded at right angle and is connected with the plate surface of the main plate, the surface plate 4-4 on the upper side of the beam connecting end extends to the end covering the beam connecting, the extending part is used as a supporting plate of the beam, and a screw hole which is connected with the lower side surface of the beam is arranged at the front end of the supporting plate of the beam. Screw holes are formed in the side panels on the upper side face of the beam connecting end, internal thread sleeves are welded at the lower ends of the side panel holes on the upper side face of the beam connecting end, the two sides of the side panels 4-4 and 4-5 are welded with the edges of the outer panels of the plate group, and the middle parts of the panel faces of the side panels 4-4 and 4-5 are spot-welded on the edges of the inner panels of the plate group through penetration welding holes.

A hinge shaft seat 4-6 is fixed on the side surface of the column connecting end above the beam connecting end of the node member, a larger shaft 4-7 parallel to the upper surface of the column connecting end of the node member and the side surface of the beam connecting end is arranged on the hinge shaft seat, and a beam-pulling lug 4-8 with a hole is arranged on the side surface of the upper part of the column connecting end of the upright column above the node member;

referring to fig. 3, 4, 7 and 8, the end of the beam 2 is in a square cylinder shape, the peripheral surface of the square cylinder at the beam end is provided with a section of lower side surface 2-1, the length of the lower side surface of the beam end corresponds to the length of the upper beam connecting end of the node member, two sides of the beam end are fixed with shaft hole plates 2-2 matched with hinge shafts on the node member through bolts, and the shaft hole plates 2-2 are provided with hinge shaft holes on the upper surface of the beam; bolt holes connected with the upper beam connecting end of the node member are arranged on two side surfaces of the beam end head, the beam end head is sleeved on the beam connecting end of the node member when a frame is formed, the cross beam is fastened on the node member by bolts penetrating through the bolt holes on the beam end head and the bolt holes on the connecting end of the main beam of the node, and the upper surface of the beam close to the beam end is provided with perforated split lugs 2-3 corresponding to the split lugs 4-8 on the node member when the cross beam rotates around a hinged shaft on the node and leans against the upright post

Referring to fig. 3 and 4, the end of the upright post 1 is in a square cylinder shape and is butted with the connecting end of the cylindrical post above the node component, a section of tenon 1-1 extends out of the end of the square cylinder shape of the upright post 1, the post connecting end of the node component forms a sleeve through the height difference between the outer layer plate and the inner layer plate, the tenon 1-1 of the end of the post is inserted into the sleeve, a sleeve is welded at the end of the tenon 1-1, and the end of the main plate in the middle of the inner layer is welded with the inserted post of the sleeve insert sleeve on the tenon 1-1.

Referring to fig. 3 and 4, in order to improve the self strength of the upright column, the cross beam and the diagonal brace, the upright column, the cross beam and the diagonal brace are made of sectional materials consisting of rectangular outer tubes, rectangular core tubes and connecting rib plates between four corners of the rectangular core tubes and four corners of the outer tubes.

Referring to fig. 12 and 13, the diagonal bracing node member 5 includes two rectangular fastening hoops 5-1 surrounded by steel plates, and two rectangular fastening hoop lateral connecting shafts 5-2, the fastening hoop is divided into two parts with a right angle space in diagonal symmetry, the fastening hoop wall plate at the butt joint of the two parts is provided with corresponding extending folded angle fins 5-3, screw holes are arranged on the fins, fastening hoop tightening screws penetrate through the opposite fins 5-3 of the two parts, the two fastening hoop connecting shafts 5-2 penetrate through the side walls of the fastening hoops 5-1, the ends of the connecting shafts 5-2 extending into the fastening hoops are provided with radial flanges, the inner surfaces of the wall plates of the fastening hoops into which the connecting shafts extend are provided with rubber pads 5-4, the rubber pads 5-4 are bonded or fixed in the fastening hoops by short screws, and the connecting shaft between the two fastening hoops is provided with a separating ring 5-5.