A hinged and rigid connection conversion device for connecting nodes between metal rods

Abstract

The invention discloses a device for converting a hinged connection to a rigid connection at a connection node between metal rods, which mainly consists of a connector 1 and a connector 2; a circular pin shaft hole and an R-shaped pin shaft hole are provided on the ear plates of the connector 1 and the connector 2, and the R-shaped pin shaft hole consists of an upper smooth arc section and a lower vertical section. When the angle between the center lines of the metal rods at both ends of the node changes between 90° and 180°, the connector 1 and the connector 2 rotate around the fixed pin shaft, and the sliding pin shaft slides in the upper smooth arc section, so that the entire node is hinged; when the angle is 180°, the switch of the spring lock is turned on, the sliding pin shaft enters the bottom of the lower vertical section, the spring lock is closed, the sliding pin shaft is locked, and the node is rigidly connected; the conversion device of the invention has light dead weight, simple structure, high conversion efficiency, and convenient assembly and disassembly, thereby improving the construction speed of the overall structure, being able to realize the recycling of metal components, and can be applied to large-span spatial grid structures with various rod cross sections to meet various functional requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of space structures of civil engineering, and in particular relates to a hinged connection and rigid connection conversion device for connecting nodes between metal rods. Background Art

[0002] In recent years, large-span space grid structures have been widely used in building structures at home and abroad due to their beautiful architectural shape, large span, simplicity and efficiency. Large-span space grid structures are constructed and installed using methods such as high-altitude scattered assembly of full-floor scaffolding, scaffolding sliding method and overall lifting method, which require the addition of more construction tools and support systems, are costly and have a long construction period, and are not the best construction methods. In addition, in order to increase the bearing capacity of the overall structure, the space grid structure uses a large number of metal rods with large cross-sectional stiffness, and most of the rods are rigidly connected, so it is impossible to use the overall traction and lifting method without or with few supports that has been widely used in cable structure construction, which has become a key issue restricting the development of space grid structure construction technology. Summary of the invention

[0003] In order to solve the above problems, the present invention discloses a hinged and rigidly connected conversion device for connecting nodes between metal rods, which can be freely converted to ensure that adjacent metal rods are hinged during the construction phase and rigidly connected during the normal use phase, meeting the requirements of overall traction and lifting construction without or with few supports, and can be repeatedly used to reduce construction costs.

[0004] To achieve the above object, the technical solution of the present invention is as follows:

[0005] A device for converting hinges and rigid connections between metal rods, comprising a connecting member 1 and a connecting member 2, wherein the connecting member 1 comprises an ear plate 1, a bottom plate 1, a metal rod 1 and a spring lock, wherein the number of the ear plates 1 is two, the ear plate 1 is vertically arranged on the surface of the bottom plate 1, the front end of the ear plate 1 is arc-shaped, the metal rod 1 is arranged on the back of the bottom plate 1, the ear plate 1 is provided with a circular pin shaft channel 1 and an R-shaped pin shaft channel 1, the R-shaped pin shaft channel 1 is composed of an upper smooth arc section and a lower vertical section, the circular pin shaft channel 1 is arranged directly above the lower vertical section, the spring lock is arranged on one side of the R-shaped pin shaft channel 1, the spring lock comprises a spring, a switch, and a lock tongue, one end of the spring is connected to the ear plate 1, and the other end A connecting switch, wherein the switch is connected to a lock tongue, wherein the lock tongue is arranged between an upper smooth arc section and a lower vertical section, wherein the second connecting member comprises an ear plate, a bottom plate, and a metal rod, wherein the ear plate is vertically arranged on the surface of the bottom plate, wherein the metal rod is arranged on the back of the bottom plate, wherein the ear plate is provided with a circular pin shaft channel and an R-shaped pin shaft channel, wherein the R-shaped pin shaft channel and the R-shaped pin shaft channel have the same shape and are symmetrically arranged in reverse, wherein the front end of the ear plate is an arc shape, and the ear plate is inserted between the two ear plates, wherein the fixed pin shaft passes through the circular pin shaft channel and the circular pin shaft channel, wherein the sliding pin shaft passes through the R-shaped pin shaft channel and the R-shaped pin shaft channel, and the outer sides of the fixed pin shaft and the sliding pin shaft are connected with fasteners.

[0006] The invention discloses a device for converting a hinge connection and a rigid connection between metal rods. The conversion method is as follows: when the angle (obtuse angle) between the center lines of the metal rods 1 and 2 at both ends of the node changes between 90° and 180°, the connector 1 and the connector 2 rotate around the center line of the fixed pin shaft, and the sliding pin shaft slides in the upper smooth arc section of the R-shaped pin shaft channel 1 and the R-shaped pin shaft channel 2, and the entire node is in a hinged state; when the angle (obtuse angle) between the center lines of the metal rods 1 and 2 is When it is 180°, turn on the switch of the spring lock, and the sliding pin enters the bottom of the lower vertical section of the R-shaped pin channel one and the R-shaped pin channel two, turn off the switch of the spring lock, and the sliding pin is locked. The relative rotation within the plane of the connecting piece one and the connecting piece two is restricted by the fixed pin and the sliding pin, and the entire node is in a rigid connection state; turn on the switch of the spring lock again, and push the sliding pin back into the upper smooth arc section of the R-shaped pin channel one and the R-shaped pin channel two, turn off the switch of the spring lock, and the node becomes hinged again.

[0007] Furthermore, the upper smooth arc sections of the R-shaped pin shaft hole 1 and the R-shaped pin shaft hole 2 are arc holes set with the center line of the fixed pin shaft as the center line, and the hole width is greater than the diameter of the sliding pin shaft. When the metal connecting piece 1 and the connecting piece 2 rotate around the center line of the fixed pin shaft, the sliding pin shaft slides in the upper smooth arc sections of the R-shaped pin shaft hole 1 and the R-shaped pin shaft hole 2 and does not bear the load, that is, the two ear plates are connected together only by the fixed pin shaft in the plane, thereby ensuring the hinged property of the node; when the sliding pin shaft enters the bottom of the lower vertical section of the R-shaped pin shaft hole 1 and the R-shaped pin shaft hole 2, the switch of the spring lock is closed, and the sliding pin shaft is locked by the vertical section and the lock tongue of the spring lock and cannot continue to slide. The sliding pin shaft simultaneously bears the pressure of the R-shaped pin shaft hole 1, the R-shaped pin shaft hole 2 and the lock tongue, thereby ensuring the rigid connection property of the node.

[0008] Furthermore, the spring lock is composed of three parts: a spring, a switch, and a lock tongue, all of which are made of metal materials. The spring lock can be opened by pressing the switch and pushing it horizontally in the direction of the bottom plate. The lock tongue of the spring lock enters a groove of the ear plate, and the upper smooth arc section of the R-shaped pin shaft channel is connected with the lower vertical section. When the switch is released, the spring lock will automatically close the spring lock under the action of the spring, and the lock tongue of the spring lock enters the R-shaped pin shaft channel.

[0009] Furthermore, the metal rod member 1 and the metal rod member 2 are tubular, H-shaped, and rectangular.

[0010] The beneficial effects of the present invention are:

[0011] The hinged and rigid connection conversion device for connecting nodes between metal rods provided by the present invention has light weight and simple structure, can effectively save steel, improve the construction speed of the overall structure, and realize the recycling of components; the novel connection node conversion device between metal rods can be applied to large-span spatial grid structures of various structural forms and various rod cross-sections; the conversion device can be freely transformed into hinged and rigid connections according to the angles of the metal rods connected on both sides, can meet the force requirements of large-span spatial grid structures in the rapid construction and normal use stages of traction and lifting without supports or with few supports, and reduce construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a composition diagram of the conversion device described in the present invention.

[0013] Figure 2 It is a plan view of the spring lock switch described in the present invention.

[0014] Figure 3 It is an elevation view of the spring lock switch described in the present invention.

[0015] Figure 4 It is a schematic diagram of the R-shaped pin shaft channel 1 described in the present invention.

[0016] Figure 5 This is a three-dimensional diagram of the two metal rods with their center lines at 90°.

[0017] Figure 6 It is a three-dimensional diagram with the center lines of two metal rods forming a 120° angle.

[0018] Figure 7 This is a three-dimensional diagram of the two metal rods with their center lines forming an angle of 150°.

[0019] Figure 8 It is a three-dimensional diagram where the center lines of two metal rods are 180° apart.

[0020] Fig. 9 A three-dimensional diagram of a spring lock switch opened with the center lines of two metal rods at 180°.

[0021] Fig.10 A three-dimensional diagram of a spring lock switch closed with the center lines of two metal rods at 180°.

[0022] List of reference numerals:

[0023] 1-spring lock, 2-fixed pin, 3-sliding pin, 4-fastener, 5-circular pin hole one, 6-r-shaped pin hole one, 7-ear plate one, 8-bottom plate one, 9-metal rod one, 10-spring, 11-switch, 12-lock tongue, 13-connecting piece one, 14-connecting piece two, 15-circular pin hole two, 16-r-shaped pin hole two, 17-ear plate two, 18-bottom plate two, 19-metal rod two, 20-upper smooth arc section, 21-lower vertical section. DETAILED DESCRIPTION

[0024] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0025] The hinged and rigid-connected conversion device for connecting nodes between metal rods described in the present invention mainly solves the problem that the metal rods of large-span space structures are hinged during the construction phase to meet the requirements of overall traction and lifting construction without or with few supports, and are rigidly connected during the normal use phase to meet the requirements of structural bearing capacity. The conversion device has the advantages of light weight, simple structure, high mechanism conversion efficiency, can effectively save steel, increase the construction speed of the overall structure, realize the recycling of components, and has a wide range of applications.

[0026] like Figure 1As shown, a hinged to rigid conversion device for connecting nodes between metal rods includes a connector 13, a connector 2 14, a fixed pin 2, a sliding pin 3 and a fastener 4. The connector 13 includes a spring lock 1, a circular pin hole 5, an R-shaped pin hole 6, an ear plate 7, a bottom plate 8, and a metal rod 9. The connector 2 14 includes a circular pin hole 15, an R-shaped pin hole 16, an ear plate 17, a bottom plate 18, and a metal rod 19.

[0027] The ear plate 1 7 and the bottom plate 1 8 are used to connect the metal rod 1 9, and the ear plate 2 17 and the bottom plate 2 18 are used to connect the metal rod 2 19;

[0028] The fixed pin 2 and its fastener 4 are used to connect the ear plate 1 7 and the ear plate 2 17, and provide a rotation center in the plane for the metal rods 9 and 19 at both ends;

[0029] The sliding pin 3 and the fastener 4 are used to connect the ear plate 1 7 and the ear plate 2 17 to realize the conversion of the node between the hinged connection and the rigid connection;

[0030] The circular pin shaft hole 1 5 and the circular pin shaft hole 2 15 overlap front and back, and the fixed pin shaft 2 passes through them, and their positions are relatively fixed;

[0031] The R-shaped pin shaft hole 1 6 and the R-shaped pin shaft hole 2 16 are used to limit the sliding tracks of the sliding pin shaft 3 and its fastener 4 on the ear plate 1 7 and the ear plate 2 17 .

[0032] The ear plate 7 is provided with a groove on one side of the lower vertical section 21 of the R-shaped pin shaft channel 6, and the spring lock 1 is arranged in the groove;

[0033] like Figure 2 , 3 As shown, the spring lock 1 is composed of a spring 10, a switch 11, and a lock tongue 12, and all of them are made of metal materials; one end of the spring 10 is connected to the ear plate 7, and the other end is connected to the switch 11, and the switch 11 is connected to the lock tongue 12, and the lock tongue 12 can extend out of the groove, and the position where the lock tongue 12 extends is between the upper smooth arc section 20 and the lower vertical section 21, and the spring 10 is used to apply a certain pressure to the switch 11 and the lock tongue 12. When the switch 11 is pressed and pushed horizontally toward the bottom plate 8, the spring 10 is compressed, the switch 11 is opened, and the lock tongue 12 leaves the R-shaped pin shaft channel 6 and enters the groove of the ear plate 7. After the switch 11 is released, the spring 10 pushes the switch 11 and the lock tongue 12 to move, and the lock tongue 12 enters the R-shaped pin shaft channel 6 to automatically close the switch 11;

[0034] The switch 11 is used to realize the transformation of the metal rod node between hinged connection and rigid connection. When the switch 11 is turned on and the sliding pin 3 is placed in the lower vertical section 21 of the R-shaped pin hole 16 (including the R-shaped pin hole 2 16), the switch 11 is turned off, and the metal rod node becomes rigidly connected. When the switch 11 is turned on and the sliding pin 3 is placed in the upper smooth arc section 20 of the R-shaped pin hole 16, the switch 11 is turned off, and the metal rod node becomes hinged.

[0035] The locking tongue 12 is used to separate the upper smooth arc section 20 and the lower vertical section 21 of the R-shaped pin shaft channel 1 6 (including the R-shaped pin shaft channel 2 16). The R-shaped pin shaft channel 2 16 is located between the R-shaped pin shaft channels 1 6 of the two ear plates 1 7. The front and rear positions of the R-shaped pin shaft channel 2 16 and the lower vertical section 21 of the R-shaped pin shaft channel 1 6 coincide with each other. The upper smooth arc sections 20 of the two extend to the left and right ends and are in opposite positions. When the sliding pin shaft 3 is placed in the upper smooth arc section 20 of the R-shaped pin shaft channel 1 6 and the R-shaped pin shaft channel 2 16, the locking tongue 12 prevents the sliding pin shaft 3 from entering the R-shaped pin shaft channel 1 6 and the lower vertical section 21 of the R-shaped pin shaft channel 2 16. Figure 8 When the sliding pin 3 is placed in the r-shaped pin hole 16 and the r-shaped pin hole 16, the lower vertical section 21, the lock tongue 12 prevents the sliding pin 3 from entering the r-shaped pin hole 16 and the r-shaped pin hole 16, the upper smooth arc section 20 and bears the pressure of the sliding pin 3, as Fig.10 shown.

[0036] like Figure 5-8 As shown, when the conversion device is hinged, the metal rods 9 and 19 on both sides rotate around the center line of the fixed pin 2, and the angles between the two metal rods 9 and 19 are 90° ( Figure 5 )、120°( Figure 6 )、150°( Figure 7 ) and 180° ( Figure 8 ), indicating that the angle between the metal rods 9 and 19 on both sides can be 90-180°.

[0037] like Fig. 9 As shown, when the angle between the two metal rods 9 and 19 is 180°, the switch 11 of the spring lock 1 is opened, and the sliding pin 3 enters the lower vertical section 21 of the R-shaped pin channel 1 6 and the R-shaped pin channel 2 16.

[0038] like Fig.10As shown, the switch 11 of the spring lock 1 is closed, and the sliding pin 3 is fixed in the lower vertical section 21 of the R-shaped pin hole 16 and the R-shaped pin hole 2 16. The sliding pin 3 is locked by the R-shaped pin hole 16, the R-shaped pin hole 2 16 and the lock tongue 12 of the spring lock 1 and cannot continue to slide. The sliding pin 3 is simultaneously subjected to the pressure of the R-shaped pin hole 16, the R-shaped pin hole 2 16 and the lock tongue 12. The entire node is restricted by the fixed pin 2 and the sliding pin 3, and the relative rotation of the two metal rods 9 and 19 along the plane is restricted, and becomes rigidly connected.

[0039] like Figure 7 , 8 As shown, turn on the switch 11 of the spring lock 1, push the sliding pin 3 back into the upper smooth arc section 20 of the R-shaped pin hole 1 6 and the R-shaped pin hole 2 16, and the sliding pin 3 can slide in the upper smooth arc section 20 of the R-shaped pin hole 1 6 and the R-shaped pin hole 2 16. The sliding pin 3 no longer bears the pressure of the R-shaped pin hole 1 6, the R-shaped pin hole 2 16 and the lock tongue 12, and the entire node becomes hinged.

[0040] The hinged and rigid conversion device of the present invention has light weight, simple structure, convenient assembly and disassembly, is applicable to various rod cross-section forms, and can meet the requirements of overall traction and lifting construction without or with few supports.

[0041] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above technical features.

Claims

1. A device for converting hinged and rigid connections between connection nodes of metal rods, characterized in that: The invention comprises a connecting member 1 (13) and a connecting member 2 (14), wherein the connecting member 1 (13) comprises an ear plate 1 (7), a bottom plate 1 (8), a metal rod 1 (9) and a spring lock (1), wherein the number of the ear plates 1 (7) is two, the ear plate 1 (7) is vertically arranged on the surface of the bottom plate 1 (8), the front end of the ear plate 1 (7) is arc-shaped, the metal rod 1 (9) is arranged on the back of the bottom plate 1 (8), and the ear plate 1 (7) is provided with a circular pin shaft channel 1 (5) and an R-shaped pin shaft channel 1 (6). The R-shaped pin shaft hole (6) is composed of an upper smooth arc section (20) and a lower vertical section (21). The circular pin shaft hole (5) is arranged directly above the lower vertical section (21) of the R-shaped pin shaft hole (6). The spring lock (1) is arranged on one side of the R-shaped pin shaft hole (6). The spring lock (1) comprises a spring (10), a switch (11), and a lock tongue (12). One end of the spring (10) is connected to the ear plate (7), and the other end is connected to the switch (11). The switch (11 ) is connected to a lock tongue (12), the lock tongue (12) being arranged between an upper smooth arc section (20) and a lower vertical section (21), the second connecting member (14) comprising a second ear plate (17), a second bottom plate (18), and a second metal rod (19), the second ear plate (17) being arranged vertically on the surface of the second bottom plate (18), the second ear plate (17) being provided with a second circular pin shaft channel (15) and a second R-shaped pin shaft channel (16), the second metal rod (19) being arranged on the back of the second bottom plate (18) The R-shaped pin shaft hole 2 (16) is the same shape as the R-shaped pin shaft hole 1 (6), and is symmetrically arranged in reverse. The front end of the ear plate 2 (17) is arc-shaped. The ear plate 2 (17) is inserted between the two ear plates 1 (7). The fixed pin shaft (2) passes through the circular pin shaft hole 1 (5) and the circular pin shaft hole 2 (15). The sliding pin shaft (3) passes through the R-shaped pin shaft hole 1 (6) and the R-shaped pin shaft hole 2 (16). The fixed pin shaft (2) and the sliding pin shaft (3) are connected to the outer sides of the fastener (4). The upper smooth arc sections (20) of the R-shaped pin shaft hole 1 (6) and the R-shaped pin shaft hole 2 (16) are arc holes arranged with the center line of the fixed pin shaft (2) as the center line, and the widths of the R-shaped pin shaft hole 1 (6) and the R-shaped pin shaft hole 2 (16) are greater than the diameter of the sliding pin shaft (3); The metal rod piece 1 (9) and the metal rod piece 2 (19) are tubular, H-shaped and rectangular.

2. The hinged and rigid connection conversion device for connecting nodes between metal rods according to claim 1 is characterized in that: The conversion method of the conversion device is as follows: when the angle between the center lines of the metal rod member 1 (9) and the metal rod member 2 (19) at both ends of the node changes between 90° and 180°, the connecting member 1 (13) and the connecting member 2 (14) rotate with the center line of the fixed pin shaft (2) as the center, and the sliding pin shaft (3) slides in the upper smooth arc section (20) of the R-shaped pin shaft channel 1 (6) and the R-shaped pin shaft channel 2 (16), and the entire node is in a hinged state; when the angle between the center lines of the metal rod member 1 (9) and the metal rod member 2 (19) is 180°, the switch (11) of the spring lock (1) is opened, and the sliding pin shaft (3) enters the R-shaped pin shaft channel. The switch (11) of the spring lock (1) is closed at the bottom of the lower vertical section (21) of the R-shaped pin shaft channel 1 (6) and the R-shaped pin shaft channel 2 (16), the sliding pin shaft (3) is locked, the connecting member 1 (13) and the connecting member 2 (14) are restricted from relative rotation in the plane by the fixed pin shaft (2) and the sliding pin shaft (3), and the entire node is in a rigid connection state; the switch (11) of the spring lock (1) is reopened, and the sliding pin shaft (3) is pushed back into the upper smooth arc section (20) of the R-shaped pin shaft channel 1 (6) and the R-shaped pin shaft channel 2 (16), the switch (11) of the spring lock (1) is closed, and the node becomes hinged again.

Images