A combined link mechanism for synchronous folding of components

Abstract

The present invention discloses a combined connecting rod mechanism for synchronous folding of components, comprising a vertically arranged track, a lifting slide moving along the track, and two groups of combined connecting rods symmetrically arranged on both sides of the lifting slide; the track is embedded in the middle column of the prefabricated box-type room during operation; each group of combined connecting rods comprises a first connecting rod, a second connecting rod, a connecting plate and a third connecting rod; the connecting plate comprises an integrally arranged first connecting surface and a second connecting surface, the second connecting surface being higher than the first connecting surface; the first connecting surface is fixedly connected to the top plate to be folded on one side of the middle column of the prefabricated box-type room during operation. The present invention can realize the simultaneous folding of two components toward the middle component, and effectively avoids the collision between components and the stress concentration phenomenon at the connection between the components and the connecting rods.

Description

Technical Field

[0001] The invention relates to a combined connecting rod structure, in particular to a combined connecting rod mechanism that can be used for synchronous folding. Background Art

[0002] Generally, crank-connecting rod mechanisms are used for mechanical power transmission. The loads they are subjected to are small and will not cause local stress concentration in the machine, which will lead to deformation or even damage of the machine. However, for the folding technology of some house structures, due to the large deadweight and cross-sectional dimensions of their components, when ordinary crank-connecting rod mechanisms are installed on structural components, they often cause deformation of the crank-connecting rod due to the large loads transmitted by the components, or cause large stress concentration at the connection between the crank-connecting rod and the component, resulting in local deformation of the component, thereby reducing safety and applicability. At the same time, some specific engineering structures need to meet the requirements of synchronous and symmetrical folding and unfolding of two components. General crank-connecting rods can only simply complete the folding and unfolding of one component, and cannot achieve synchronous folding and unfolding of two components.

[0003] The folding and unfolding motion accuracy of engineering components are very high. It is necessary to meet the requirements that the components after unfolding must fit tightly without gaps, and that there must be no collision at the junction of the two components. For engineering components with the function of double-plate synchronous folding and unfolding, it is necessary not only to consider the huge load brought to the middle component when the two plates move at the same time to prevent stress concentration from causing damage, but also to consider the precise synchronization of the folding and unfolding process of the two plates. Therefore, reducing the stress concentration of the middle component, ensuring a high-precision folding and unfolding motion curve, and meeting the synchronization of double-plate folding and unfolding have become technical problems that need to be solved urgently. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to address the deficiencies of the prior art and provide a combined connecting rod mechanism that can achieve the simultaneous folding of two components toward an intermediate component, thereby avoiding collisions between components and stress concentration problems at the connections between components and connecting rods.

[0005] Technical solution: The combined connecting rod mechanism for synchronous folding of components of the present invention comprises a vertically arranged track, a lifting slide moving along the track, and two sets of combined connecting rods symmetrically arranged on both sides of the lifting slide; the track is embedded in the middle column of the prefabricated box-type room during operation;

[0006] Each group of combined connecting rods includes a first connecting rod, a second connecting rod, a connecting plate and a third connecting rod; the connecting plate includes a first connecting surface and a second connecting surface that are integrally arranged, and the second connecting surface is higher than the first connecting surface; the first connecting surface is fixedly connected to the top plate to be folded on one side of the middle column of the prefabricated box-type room during operation; one end of the second connecting surface is rotationally connected to one end of the third connecting rod, and the other end is rotationally connected to one end of the second connecting rod; the other end of the second connecting rod is rotationally connected to the top corner of one side of the lifting slide; the bottom corner of one side of the lifting slide is rotationally connected to one end of the first connecting rod; the other end of the first connecting rod is rotationally connected to the middle part of the third connecting rod; the other end of the third connecting rod is rotationally connected to the middle column of the prefabricated box-type room during operation. Through the rotation of each connecting rod node, the lifting slide is driven to move vertically on the track, and the top plates on both sides of the middle column are driven to fold and unfold synchronously.

[0007] Preferably, the track is a channel steel track; a trapezoidal groove is provided on one side of the lifting slide, and the outer convex surface of the track is adapted to and embedded in the groove.

[0008] Preferably, first cylindrical holes are provided at the two bottom corners of the other side of the lifting slide, and a first bolt is provided at one end of the first connecting rod and inserted into the first cylindrical hole; second cylindrical holes are provided at the two top corners of the lifting slide, and a second bolt is provided at one end of the second connecting rod and inserted into the second cylindrical hole; a third bolt in the opposite direction is provided at the other end of the second connecting rod and inserted into a first bolt hole provided at one end of the second connecting surface of the connecting plate.

[0009] Preferably, two third cylindrical holes are provided at the bottom of the lifting slide for fixing the telescopic arm of the electric cylinder; the third cylindrical hole is higher than the first cylindrical hole and the second cylindrical hole, so that no collision occurs between the telescopic arm of the electric cylinder and the connecting rod.

[0010] Preferably, for structural stability, triangular reinforcing ribs are provided on both sides of the trapezoidal groove.

[0011] Preferably, for the sake of structural rationality, a fourth bolt column is provided at one end of the third connecting rod and is inserted into the reserved hole of the middle column of the prefabricated box-type room; a fifth bolt column is provided in the middle of the third connecting rod and is inserted into the second bolt hole at one end of the first connecting rod; a third bolt hole is provided at the other end of the third connecting rod and is connected to a sixth bolt column provided at the other end of the second connecting surface of the connecting plate; a bolt hole is provided on the first connecting surface of the connecting plate for fixing the connection with the top plate to be folded by bolts.

[0012] The assembly method of the combined link mechanism for synchronous folding of components of the present invention is as follows:

[0013] 1. Insert the channel steel rail into the groove of the lifting slide;

[0014] 2. Insert the first bolt of the first connecting rod into the first cylindrical hole at the top of the lifting slide, and connect the second bolt hole of the first connecting rod with the fifth bolt in the middle of the third connecting rod;

[0015] 3. Insert the second bolt column of the second connecting rod into the second cylindrical channel at the top of the lifting slide, and insert the third bolt column of the second connecting rod into the first bolt hole of the connecting plate.

[0016] (4) Insert the sixth bolt on the connecting plate into the third bolt hole of the third connecting rod.

[0017] Beneficial Effects

[0018] 1. The present invention forms a six-link mechanism that can slide vertically through multiple crank connecting rods and lifting slides, which can realize the simultaneous folding of two components toward the middle component, realize a high-precision motion curve during the folding and unfolding of the components, and effectively avoid the collision between components and the stress concentration phenomenon at the connection between the components and the connecting rods, and does not affect the contact density after unfolding. It is suitable for engineering components that require synchronous and symmetrical folding of double plates.

[0019] 2. The connecting plate of the present invention adopts a variable thickness method to place the spatial position of the multi-link outside the end section of the component, thereby preventing the mutual collision between the component and the connecting rod during the folding process of the plate, and effectively preventing the existence of the connecting rod from causing interference when other components need to be installed in the section after the plate is unfolded.

[0020] 3. The present invention is cleverly designed so that the connecting plate is connected to the second connecting rod and the third connecting rod at the front and rear end surfaces respectively, so that the second connecting rod and the third connecting rod are staggered front and back, and no collision occurs when the plate is about to fit the mid-construction component, thereby ensuring the safety between the connecting rods.

[0021] 4. The lifting slide and the channel steel track together form a vertically movable slider system. The lifting slide embeds the channel steel track into the groove, which limits the freedom of the lifting slide in other directions and ensures the stability of the lifting slide sliding on the channel steel track. The channel steel track fits perfectly with the inside of the lifting slide, evenly transferring the load to the channel steel track, avoiding the buckling of the channel steel track due to excessive concentrated force. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of a combined link mechanism for synchronous folding of components of the present invention;

[0023] Figure 2 is a schematic structural diagram of the first connecting rod of the present invention;

[0024] Figure 3 is a schematic structural diagram of the second connecting rod of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the connecting plate of the present invention;

[0026] Figure 5 is a schematic structural diagram of the third connecting rod of the present invention;

[0027] Figure 6 It is a structural schematic diagram of one side of the jacking slide of the present invention;

[0028] Figure 7 It is a structural schematic diagram of another side of the jacking slide of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the track of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the mechanism of the present invention for synchronously folding two top plates.

[0031] In the figure, 1, first connecting rod; 2, second connecting rod; 3, connecting plate; 4, third connecting rod; 5, lifting slide; 6, track; 7, middle column; 8, top plate; 9, electric cylinder; 1-1, first bolt column; 1-2 second bolt hole; 2-1, second bolt column; 2-2, third bolt column; 3-1, bolt hole; 3-2, sixth bolt column; 3-3, first bolt hole; 4-1, fourth bolt column; 4-2, third bolt hole; 4-3, fifth bolt column; 5-1a, first cylindrical channel; 5-1b, second cylindrical channel; 5-2, third cylindrical channel; 5-3, groove; 5-4, reinforcing rib. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0033] Example 1: Figure 1-9 As shown, the combined connecting rod mechanism for synchronous folding of components is used to synchronously fold the top plates 8 on both sides of the middle column 7 of the prefabricated box-type room. The top plates 8 are all prefabricated frame plates composed of galvanized folding parts. Six bolt holes in a row are reserved at the end of the top plate 8 close to the middle column 7. A recessed slot is reserved at the top of the middle column for the installation of the track system. A circular hole for inserting the fourth bolt column 4-1 on the third connecting rod 4 and a circular hole required for the pin shaft at the bottom of the electric cylinder are reserved in the middle. The top of the electric cylinder 9 is connected to the third column-shaped channel 5-2 on the lifting slide 5, and an axial force is applied to the lifting slide 5, driving the lifting slide 5 to move vertically on the channel steel track 6. The present invention controls the two top plates 8 to perform a high-precision motion curve, and completes the synchronous folding process of the two top plates 8 to the middle column 7.

[0034] The mechanism of the present invention includes a vertically arranged channel steel track 6, a lifting slide 5 moving along the track 6 and two groups of combined connecting rods symmetrically arranged on both sides of the lifting slide 5; a trapezoidal groove 5-3 is arranged on one side of the lifting slide 5, and the outer convex surface of the track 6 is adapted to and embedded in the groove 5-3; triangular reinforcing ribs 5-4 are arranged on both sides of the trapezoidal groove 5-3; the track 6 is embedded in the middle column 7 of the prefabricated box-type room when working.

[0035] Each group of combined connecting rods includes a first connecting rod 1, a second connecting rod 2, a connecting plate 3 and a third connecting rod 4; the connecting plate 3 includes a first connecting surface and a second connecting surface which are integrally arranged, and the second connecting surface is higher than the first connecting surface; the first connecting surface is fixedly connected to the top plate 8 to be folded on one side of the middle column 7 of the prefabricated box-type room during operation; one end of the second connecting surface is rotatably connected to one end of the third connecting rod 4, and the other end is rotatably connected to one end of the second connecting rod 2; the other end of the second connecting rod 2 is rotatably connected to the top corner of one side of the lifting slide 5; the bottom corner of one side of the lifting slide 5 is rotatably connected to one end of the first connecting rod 1; the other end of the first connecting rod 1 is rotatably connected to the middle part of the third connecting rod 4; the other end of the third connecting rod 4 is rotatably connected to the middle column 7 of the prefabricated box-type room during operation.

[0036] A first cylindrical channel 5-1a is provided at the two bottom corners of the other side of the lifting slide 5, and a first bolt column 1-1 is provided at one end of the first connecting rod 1 and inserted into the first cylindrical channel 5-1a; second cylindrical channels 5-1b are respectively provided at the two top corners of the lifting slide 5, and a second bolt column 2-1 is provided at one end of the second connecting rod 2 and inserted into the second cylindrical channel 5-1b; the other end of the second connecting rod 2 is provided with a third bolt column 2-2 in the opposite direction, which is inserted into the first bolt hole 3-3 provided at one end of the second connecting surface of the connecting plate 3.

[0037] Two third cylindrical holes 5-2 are provided at the bottom of the lifting slide 5 for fixing the telescopic arm of the electric cylinder 9; the third cylindrical hole 5-2 is higher than the first cylindrical hole 5-1a and the second cylindrical hole 5-1b.

[0038] A fourth bolt column 4-1 is provided at one end of the third connecting rod 4 and is inserted into the reserved hole of the middle column 7 of the prefabricated box-type room; a fifth bolt column 4-3 is provided in the middle of the third connecting rod 4 and is inserted into the second bolt hole 1-2 at one end of the first connecting rod 1; a third bolt hole 4-2 is provided at the other end of the third connecting rod 4 and is connected to a sixth bolt column 3-2 provided at the other end of the second connecting surface of the connecting plate 3; a bolt hole 3-1 is provided on the first connecting surface of the connecting plate 3 for fixing the connection with the top plate 8 to be folded by bolts.

[0039] Through the hinged rotation of each connecting rod around the node, the lifting carriage 5 is driven to move vertically on the channel steel track 6, driving the components on both sides of the middle component to fold and unfold synchronously. Fig. 9 As shown, as the electric cylinder 9 pushes the lifting carriage 5 to move upward, the second connecting rod 2 rotates counterclockwise around point B, and transmits the load on the lifting carriage 5 to the second connecting rod 2 through the second cylindrical hole 5-1b. The first connecting rod 1 rotates clockwise around point A, and transmits the load on the lifting carriage 5 to the first connecting rod 1 through the first cylindrical hole 5-1a. The third connecting rod 4 rotates counterclockwise around point E through the fifth bolt 4-3 in the middle without colliding with the third connecting rod 4, thereby transmitting the load on the first connecting rod 1 to the third connecting rod 4, and then to the middle column 7 and the top plate 8. The variable thickness plate of the connecting plate 3 ensures that the third connecting rod 4 and the second connecting rod 2 will not collide during the counterclockwise rotation around points D and C, and transmits the load from the second connecting rod 2 and the third connecting rod 4 to the connecting plate 3 through the connection points C and D, and then to the top plate 8 through the bolts on the connecting plate 3, thereby driving the top plate 8 to fold.

[0040] like Figure 6-7 As shown, the middle and bottom of the lifting slide 5 are hollowed out, and the channel steel track 6 is embedded therein. When the lifting slide 5 slides vertically upward on the channel steel track 6, the lifting slide 5 transfers the load to the channel steel track 6 by means of confining pressure. The upper and lower ends of the channel steel track 6 are connected to the grooves of the middle column 7, and the triangular reinforcing ribs 5-4 on the top are also tightly fitted with the grooves of the middle column 7, transferring the load on the channel steel track 6 to the middle column 7, reducing local stress concentration.

[0041] The channel steel rail is embedded in the groove reserved at the top of the middle column, the two ends of the channel steel rail are welded to the groove, the width section of the leg contacts the top plate slider, the height section is close to but not in contact with the lifting slide, and the tip of the leg contacts the lifting slide, so that the load of the lifting slide is transferred to the lifting slide through the channel steel rail. The lifting slide is a trapezoidal channel steel, the inner side of the inclined side contacts the lifting slide, and the outer surface is welded to the groove reserved in the middle member, so that the load is transferred from the lifting slide to the middle member, with less stress concentration.

[0042] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and details may be made without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A combined linkage mechanism for synchronous folding of components, characterized in that: It comprises a vertically arranged track (6), a lifting slide (5) moving along the track (6), and two groups of combined connecting rods symmetrically arranged on both sides of the lifting slide (5); the track (6) is embedded in the middle column (7) of the prefabricated box-type room during operation; Each group of combined connecting rods comprises a first connecting rod (1), a second connecting rod (2), a connecting plate (3) and a third connecting rod (4); the connecting plate (3) comprises a first connecting surface and a second connecting surface which are integrally arranged, the second connecting surface being higher than the first connecting surface; the first connecting surface is fixedly connected to a top plate (8) to be folded on one side of a middle column (7) of the prefabricated box-type room during operation; one end of the second connecting surface is rotatably connected to one end of the third connecting rod (4), and the other end is rotatably connected to one end of the second connecting rod (2); the other end of the second connecting rod (2) is rotatably connected to a top corner of one side of the lifting slide (5); a bottom corner of one side of the lifting slide (5) is rotatably connected to one end of the first connecting rod (1); the other end of the first connecting rod (1) is rotatably connected to the middle part of the third connecting rod (4); the other end of the third connecting rod (4) is rotatably connected to the middle column (7) of the prefabricated box-type room during operation.

2. The combined link mechanism for synchronous folding of components according to claim 1, characterized in that: The track (6) is a channel steel track; a trapezoidal groove (5-3) is provided on one side of the lifting slide (5); an outer convex surface of the track (6) is adapted to the groove (5-3) and embedded in the groove (5-3).

3. The combined link mechanism for synchronous folding of components according to claim 2, characterized in that: First columnar holes (5-1a) are provided at two bottom corners of the other side of the lifting slide (5); a first bolt (1-1) is provided at one end of the first connecting rod (1) and is inserted into the first columnar hole (5-1a); second columnar holes (5-1b) are provided at two top corners of the lifting slide (5); a second bolt (2-1) is provided at one end of the second connecting rod (2) and is inserted into the second columnar hole (5-1b); a third bolt (2-2) is provided at the other end of the second connecting rod (2) in the opposite direction and is inserted into a first bolt hole (3-3) provided at one end of the second connecting surface of the connecting plate (3).

4. The combined link mechanism for synchronous folding of components according to claim 3, characterized in that: Two third cylindrical holes (5-2) are arranged at the bottom of the lifting slide (5) for fixing the telescopic arm of the electric cylinder (9); the third cylindrical holes (5-2) are higher than the first cylindrical holes (5-1a) and the second cylindrical holes (5-1b).

5. The combined link mechanism for synchronous folding of components according to claim 2, characterized in that: Triangular reinforcing ribs (5-4) are provided on both sides of the trapezoidal groove (5-3).

6. The combined link mechanism for synchronous folding of components according to claim 4, characterized in that: A fourth bolt column (4-1) is provided at one end of the third connecting rod (4) and is inserted into a reserved hole of a middle column (7) of the prefabricated box-type room; a fifth bolt column (4-3) is provided in the middle of the third connecting rod (4) and is inserted into a second bolt hole (1-2) at one end of the first connecting rod (1); a third bolt hole (4-2) is provided at the other end of the third connecting rod (4) and is connected to a sixth bolt column (3-2) provided at the other end of the second connecting surface of the connecting plate (3); a bolt hole (3-1) is provided on the first connecting surface of the connecting plate (3) and is used for being fixedly connected to the top plate (8) to be folded by bolts.

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