CN201133114Y

CN201133114Y - Folding type truss

Info

Publication number: CN201133114Y
Application number: CNU2007200647958U
Authority: CN
Inventors: 张松根
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-10-17
Filing date: 2007-10-17
Publication date: 2008-10-15
Anticipated expiration: 2017-10-17

Abstract

The utility model relates to a folding truss, the structural unit of which is a movable isoceles triangle component which is composed of two middle bars, two bottom bars and a middle plumbing bar. The top ends of the two middle bars and the top end of the middle plumbing bar are pivoted in a main connecting nest, and the other ends of the two middle bars and the two bottom bars are respectively pivoted in the connecting nest of the other isoceles triangle component which is adjacent to the two middle bars and the two bottom bars, one ends of the two bottom bars close to the middle plumbing bar are connected together by an auxiliary connecting nest which can slide up and down on the middle plumbing bar or a bar which forming the extension line of the middle plumbing bar; the adjacent isosceles triangle components are connected into the truss through public middle bars and the main connecting nest. The folding truss has stable structure and strong bearing capability, thereby the length of the truss can be prolonged; the fold and the unfolding are both convenient.

Description

A kind of collapsible frame that spreads out

Technical field

The utility model relates to a kind of fluffy and collapsible frame that spreads out frame of being used for.

Background technology

The existing various folding fluffy and used frame that spreads out of frame is to be formed by connecting by a plurality of movable diamonds, and this frame that spreads out is because two diamond junctions have only a bit, and holding capacity difference and instability are very limited aspect length.And the fluffy and frame of loading and unloading type is to be socketed to form by single pipe fitting, and the dismounting assembling is wasted time and energy, and holding capacity is also relatively poor.

The utility model content

The purpose of this utility model is to overcome existing frame holding capacity difference and the unsettled defective of spreading out, and the frame that spreads out of the strong and folding convenient of a kind of good stability, holding capacity is provided.

The technical scheme that the utility model adopted is: its element of construction is by two waist bars, two foundation bars, the movable isosceles triangle member that middle plumbing bar is formed, the top of two waist bars and the top of middle plumbing bar are articulated in main the connection in the nest, and the other end of two waist bars and two foundation bars is articulated in the leading of isosceles triangle member that is adjacent respectively and is connected in the nest; Two foundation bars link together by the auxilliary nest that connects near an end of middle plumbing bar, and the auxilliary nest that connects can be at middle plumbing bar or slide up and down on the bar of the extended line of plumbing bar in forming; Adjacent isosceles triangle member is connected nest by public waist bar with the master and connects into the frame that spreads out.

Make the auxilliary scheme that slides up and down on the bar of nest extended line of plumbing bar in middle plumbing bar or composition that connects have following three at least: (1) bottom of plumbing bar in described is provided with a pole cap, described pole cap connects the hole that nest passes middle plumbing bar greater than assisting, and the auxilliary nest that connects can not be slided into beyond the middle plumbing bar; Be respectively equipped with chute on the auxilliary both sides that connect nest, described chute is provided with slip ring, described slip ring can auxilliary connect nest be in during the bottom of plumbing bar, slide toward auxilliary the middle of nest that connect along chute, fasten pole cap, the triangle member just is in stable state like this, when slip ring separates with pole cap, the auxilliary nest that connects can slide toward main nest one end that connects with an end of two foundation bars, and the triangle member frame just is in folded state like this; (2) plumbing bar in described is designed to telescopic, an end of middle plumbing bar inner core is fixed on auxilliary the connection on the nest, and inner core can be in the cavity the inside of middle plumbing bar along radially sliding; Middle plumbing bar is provided with the bar cover by an end of bottom bar; The auxilliary nest that connects is provided with slip ring; When described bar cover with auxilliary when being connected the nest contact, slip ring can assist in the past and be connected in the middle of the nest mobilely, fastens the bar cover of middle plumbing bar, the triangle member just is in stable state like this; When slip ring separated with the bar cover, the auxilliary nest that connects can slide toward be connected the opposite direction of nest with the master with an end of two foundation bars and the inner core of middle plumbing bar, and the triangle member frame just is in folded state like this; (3) be connected with an extension rod in the bottom of middle plumbing bar, the auxilliary nest that connects can slide on extension rod; Middle plumbing bar is provided with the bar cover near an auxilliary end that connects nest, and auxilliary connection nest can not be moved toward triangle member top; Bottom bar is provided with stay hook, when auxilliary connection nest slides into bar cover position, extension rod is in the outside of triangle member frame fully, at this time extension rod can be rolled in the past on one side, when extension rod folds to bottom bar when overlapping, can fix extension rod with the stay hook on the bottom bar, the triangle member just is in stable state like this.When the stay hook on extension rod and the bottom bar breaks away from, extension rod can be got back to again with middle plumbing bar and be in collinear state, the at this time auxilliary nest that connects can slide toward the direction opposite with main connection nest on extension rod with an end of two foundation bars, and the triangle member frame just is in folded state like this.

When the utility model is opened, Stability Analysis of Structures, holding capacity is strong, thereby can prolong the length of the frame that spreads out; Folding and open all very convenient.

Description of drawings

Fig. 1 is the structural representation of first embodiment of the utility model.

Fig. 2 is the structural representation of second embodiment of the utility model.

The structural representation of the 3rd embodiment of Fig. 3 the utility model.

Fig. 4 is the shape schematic diagram of stay hook embodiment illustrated in fig. 3.

Among the figure: 1. plumbing bar in, 2-1 waist bar I, 2-2. waist bar II, the 3-1 bottom bar is bottom bar II I.3-2, and 4-1. master connects nest I, and 4-2. master connects nest II, 4-3. the main nest III that connects, 5. auxilliary nest 6. slip rings, 7. pole cap, the 8. chute of connecting, 9. inner core, 10. bar cover, 11. extension rods, 12. stay hooks

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

Embodiment 1

With reference to Fig. 1, the element of construction of present embodiment is the movable isosceles triangle member of being made up of waist bar I 2-1 and waist bar II 2-2, bottom bar I 3-1 and bottom bar II 3-2, middle plumbing bar 1, the end of middle plumbing bar 1, waist bar I 2-1 and waist bar II 2-2 is articulated in main the connection among the nest I 4-1, the end of bottom bar I 3-1 and bottom bar II 3-2 is articulated in auxilliary the connection in the nest 5, and the other end of bottom bar I 3-1 and bottom bar II 3-2 and waist bar I 2-1 and waist bar II 2-2 is articulated in the main of two triangle members that is adjacent and is connected among nest II 4-2 and the main connection nest III4-3; The bottom of middle plumbing bar 1 is provided with pole cap 7, be respectively equipped with chute 8 on the auxilliary both sides that connect nest 5, described chute 8 is provided with slip ring 6, the auxilliary nest 5 that connects can slide on middle plumbing bar 1, when auxilliary connection nest 5 slides into the position of pole cap 7 with the end of two foundation bar I 3-1 and bottom bar II3-2, is blocked by pole cap 7, can not slide outward again, at this moment, slip ring 6 can slide fastening pole cap 7 along chute 8 toward pole cap 7 directions; Pole cap 7 is done rectangularity or ellipse, and the size of the size of slip ring 6 and pole cap 7 adapts, so that fastening pole cap 7 makes the triangle component stability; When slip ring 6 separated with pole cap 7, the auxilliary nest 5 that connects can slide toward main nest one end that is connected with the end of bottom bar I 3-1 and bottom bar II 3-2, and the triangle member frame just is in folded state like this.

Embodiment 2

With reference to Fig. 2, the element of construction of present embodiment is the movable isosceles triangle member of being made up of waist bar I 2-1 and waist bar II 2-2, bottom bar I 3-1 and bottom bar II 3-2, middle plumbing bar 1, the end of middle plumbing bar 1, waist bar I 2-1 and waist bar II 2-2 is articulated in main the connection among the nest 4-1, the end of two foundation bar I 3-1 and bottom bar II 3-2 is articulated in auxilliary the connection in the nest 5, and the other end of bottom bar I 3-1 and bottom bar II3-2 and waist bar I 2-1 and waist bar II2-2 is articulated in the main of two isosceles triangle members that is adjacent and is connected in the nest; Middle plumbing bar 1 is telescopic, its outer bar cover 10 that is provided with, in inner core 9 is arranged, an end of inner core 9 is fixed on auxilliary the connection on the nest 5, the other end stretches in the cavity of middle plumbing bar 1, and can in the cavity of middle plumbing bar 1, slide, when the inner core 9 of central plumbing bar 1 slides into the position of bar cover 10 with the end of auxilliary connection nest 5 and two foundation bar I 3-1 and bottom bar II 3-2, blocked by bar cover 10, can not be again toward interior slip, at this moment, slip ring 6 bar in the past overlaps the slip of 10 directions, fastening bar cover 10.Bar cover 10 is done rectangularity or ellipse, and the size of slip ring 6 adapts with the auxilliary size that is connected nest 5 and bar cover 10, so that fastening bar cover 10 makes the triangle component stability.When slip ring 6 separated with bar cover 10, the auxilliary nest 5 that connects can slide toward be connected the opposite direction of nest with the master with the end of bottom bar I 3-1 and bottom bar II 3-2 and the inner core 9 of middle plumbing bar 1, and the triangle member frame just is in folded state like this.

Embodiment 3

With reference to Fig. 3 and Fig. 4, the element of construction of present embodiment is the movable isosceles triangle member of being made up of waist bar I 2-1 and waist bar II2-2, bottom bar I3-1 and bottom bar II 3-2, middle plumbing bar 1, the end of middle plumbing bar 1, waist bar I 2-1 and waist bar II 2-2 is articulated in main the connection among the nest 4-1, the end of bottom bar I 3-1 and bottom bar II 3-2 is articulated in auxilliary the connection in the nest 5, and the other end of bottom bar I 3-1 and bottom bar II 3-2 and waist bar I 2-1 and waist bar II 2-2 is articulated in the main of two isosceles triangle members that is adjacent respectively and is connected in the nest; In outer bar cover 10, one ends that are provided with of plumbing bar 1 be provided with extension rod 11, the auxilliary nest 5 that connects can part slide beyond the bar cover 10 of extension rod 11 and middle plumbing bar 1, middle plumbing bar 1 is connected with extension rod 11 usefulness rivets, the junction should make auxilliary connection nest 5 pass., blocked when connecting nest 5 and sliding into the position of bar cover 10 when auxilliary by bar cover 10 with the end of bottom bar I 3-1 and bottom bar II 3-2, can not be again toward interior slip; At this moment, on one side extension rod 11 can be rolled in the past, and available stay hook 12 fixedly hooks; Bar cover 10 adapts with the auxilliary thickness that is connected nest 5 to the length between the rivet, so that when extension rod 11 foldings fall, can compress the auxilliary nest 5 that connects, and makes the triangle component stability.When the stay hook on extension rod 11 and the bottom bar 12 breaks away from, extension rod 11 can be got back to again with middle plumbing bar 1 and be in collinear state, the at this time auxilliary nest 5 that connects can slide toward the direction opposite with main connection nest on extension rod 11 with an end of two foundation bars, and the triangle member just is in folded state like this.

Claims

1, a kind of collapsible frame that spreads out, it is characterized in that, its element of construction is by two waist bars, two foundation bars, the movable isosceles triangle member that middle plumbing bar is formed, the top of two waist bars and the top of middle plumbing bar are articulated in main the connection in the nest, and the other end of two waist bars and two foundation bars is articulated in the leading of isosceles triangle member that is adjacent respectively and is connected in the nest; Two foundation bars link together by the auxilliary nest that connects near an end of middle plumbing bar, and the auxilliary nest that connects can be at middle plumbing bar or slide up and down on the bar of the extended line of plumbing bar in forming; Adjacent isosceles triangle member is connected nest by public waist bar with the master and connects into the frame that spreads out.

2, the collapsible frame that spreads out according to claim 1 is characterized in that, the bottom of described middle plumbing bar is provided with a pole cap, the hole of plumbing bar during described pole cap passes greater than auxilliary connection nest; Be respectively equipped with chute on the auxilliary both sides that connect nest, chute is provided with slip ring.

3, the collapsible frame that spreads out according to claim 1 is characterized in that, described middle plumbing bar is telescopic, and an end of middle plumbing bar inner core is fixed on auxilliary the connection on the nest; Middle plumbing bar is provided with the bar cover by an end of bottom bar; The auxilliary nest that connects is provided with slip ring.

4, the collapsible frame that spreads out according to claim 1 is characterized in that, the bottom of described middle plumbing bar is connected with an extension rod; Middle plumbing bar is provided with the bar cover near an auxilliary end that connects nest; Described bottom bar is provided with stay hook.