Quick connecting device for straight beam type truss structure and connecting method of quick connecting device

Abstract

The invention discloses a quick connecting device for a straight beam type truss structure and a connecting method of the quick connecting device, and relates to the technical field of truss structure installation. The number of the bearing pieces is two, and the bearing pieces are fixed to the two ends of the truss body respectively. The connecting frame is detachably and fixedly connected with the bearing piece; the number of the buckling devices is four, and the buckling devices are fixed to the four edges of the connecting frame respectively and penetrate through the bearing pieces. The opening device is mounted on the connecting frame; by arranging the buckling device and the opening device, the two truss main bodies are fixed together through the connecting frame, meanwhile, participation of bolts is avoided, and loosening caused by vibration or other external force is avoided; the buckling device is opened through sliding of the opening device, and the two truss main bodies are fixed together; and the opening of the buckling device can also be relieved.

Description

Technical Field

[0001] The invention relates to the technical field of truss structure installation, and in particular to a quick connection device for a straight beam truss structure and a connection method thereof. Background Art

[0002] The truss structure uses economical materials, has a light structure, and is easy to form various shapes to suit different uses. For example, it can be made into a simply supported truss, arch, frame and tower. In recent years, with the continuous growth of my country's steel production, truss structures are being used more and more widely, and their proportion in construction is increasing. They are widely used in industrial plants, production lines of equipment platforms in the automotive industry, logistics warehouses, public buildings, gymnasiums, business clubs, high-speed rail platforms, subway platforms, high-rise commercial buildings, etc. Truss structures have also made great breakthroughs. The biggest advantage of truss structures is that they can perfectly combine people's functional requirements, sensory requirements and economic benefits for buildings.

[0003] When multiple trusses are installed and spliced, they are usually installed by welding or fixing with nuts. When the trusses are fixed by welding, the multiple trusses will form a whole, which cannot be disassembled and reused after use, so that the trusses cannot be reused. Summary of the invention

[0004] The present invention provides a quick connection device and a connection method for a straight beam truss structure, so as to solve the problem in the prior art that when the trusses are fixed by welding, multiple trusses will form a whole and cannot be disassembled and reused after use, so that the trusses cannot be reused.

[0005] The technical problem solved by the present invention is achieved by adopting the following technical solutions:

[0006] A quick connection device for a straight beam truss structure and a connection method thereof, comprising:

[0007] Truss body;

[0008] A receiving member, wherein two receiving members are provided and are respectively fixed at two ends of the truss body;

[0009] A connecting frame, wherein the connecting frame is detachably fixedly connected to the receiving member;

[0010] The buckling devices are provided in four pieces and are respectively fixed on the four sides of the connecting frame and pass through the receiving piece;

[0011] An opening device, which is mounted on the connecting frame and can slide through the buckling device to open the buckling device;

[0012] A sliding device, which is slidably installed inside the connecting frame and pulls the propping device to slide;

[0013] A driving device, which is rotatably mounted inside the connecting frame and drives the sliding device to slide;

[0014] The positioning members are provided with four and are hinged on the outside of the driving device, and after rotation, they are buckled on the outside of the buckling device and the spreading device to limit the rotation of the driving device.

[0015] Optionally, the receiving member includes:

[0016] A receiving plate, wherein the receiving plate is fixed to an end of the truss body;

[0017] The plug-in through holes are provided with four plug-in through holes, which are respectively opened on the four sides of the receiving plate and correspond to the buckling devices.

[0018] Optionally, baffles connected to the propping device are fixedly mounted on the inner walls of the four sides of the connecting frame.

[0019] Optionally, the fastening device includes:

[0020] A memory metal plate, wherein a plurality of the memory metal plates are provided and fixed on the outside of the connection frame in a ring array and pass through the plug-in through hole;

[0021] A limit head, which is fixed to the end of the memory metal plate and contacts the receiving plate;

[0022] The limiting protrusion is fixed on the inner side of the memory metal plate and limits the sliding range of the propping device.

[0023] Optionally, the expansion device includes:

[0024] A sliding column, which is slidably mounted on the connecting frame and contacts the memory metal plate;

[0025] A compression spring, the two ends of which are fixedly connected to the sliding column and the baffle respectively;

[0026] A pull rope is fixed on the sliding column and passes through the baffle to be fixedly connected with the sliding device.

[0027] Optionally, the sliding device includes:

[0028] A sliding frame, which is slidably mounted inside the connecting frame and fixedly connected to the drawstring;

[0029] A first trapezoidal block, wherein a plurality of the first trapezoidal blocks are provided and fixed on the sliding frame in a ring array.

[0030] Optionally, the driving device includes:

[0031] A rotating plate, the rotating plate being rotatably mounted inside the connecting frame;

[0032] A handle, which is fixed to one side of the rotating plate and extends to the outside of the connecting frame;

[0033] The second trapezoidal block is provided in plurality and is fixed in an annular shape on the other side of the rotating plate, and is pressed against the first trapezoidal block when the rotating plate rotates.

[0034] Optionally, the positioning member includes:

[0035] Articulated frames, wherein four of the articulated frames are provided and fixed on the outside of the handle in a circular array;

[0036] A swing arm, the swing arm is rotatably hinged on the hinge frame;

[0037] A buckle sleeve, which is fixed to the end of the swing arm and buckled to the outer sides of the limit head and the sliding column when the swing arm rotates;

[0038] Permanent magnets are provided in two groups and are respectively fixed on the snap-fit ​​sleeve and the sliding column and attract each other.

[0039] Optionally, guide frames are fixedly mounted on both sides of the connecting frame, so that the swing arm is inserted into the interior of the guide frame when swinging and its position is adjusted by the guide frame.

[0040] The present invention also provides a method for connecting a quick connection device of a straight beam truss structure, comprising the following steps:

[0041] Step 1: First, push the connecting frame so that the connecting frame drives the buckling device to pass through the receiving piece;

[0042] Step 2: Then rotate the positioning piece to open the positioning piece and drive the driving device to rotate, so that the driving device drives the sliding device and the opening device to move, and accumulates force, so that the opening device slides to open the buckling device to a limited position, thereby completing the connection between the connecting frame and the receiving member;

[0043] Step 3: Then rotate the positioning piece. When the positioning piece rotates, the guide frame will adjust the position of the swing arm in the positioning piece through the inclined surface, so that the swing arm drives the snap-fit ​​sleeve to snap onto the outer side of the limit head.

[0044] The present invention has the following beneficial effects:

[0045] The two truss bodies are fixed together through the connection frame by setting the snap-fit ​​device and the opening device, while avoiding the involvement of bolts to prevent loosening under the influence of vibration or other external forces;

[0046] The buckling device is opened by sliding the opening device and the two truss bodies are fixed together. The buckling device can also be opened to ensure the normal disassembly of the two truss bodies, so that the truss bodies can be reused.

[0047] The positioning piece is arranged to cooperate with the buckling device and the opening device, and the driving device is restricted to prevent the driving device from rotating under the action of vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0049] Figure 1 It is a structural schematic diagram of the present invention;

[0050] Figure 2 It is an internal schematic diagram of the connection frame structure of the present invention;

[0051] Figure 3 It is a structural schematic diagram of the sliding device of the present invention;

[0052] Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement at the center A;

[0053] Figure 5 It is a structural schematic diagram of the receiving member of the present invention.

[0054] In the figure: 100, truss body;

[0055] 200, receiving member; 210, receiving plate; 220, plug-in through hole;

[0056] 300, connecting frame; 310, baffle; 320, guide frame;

[0057] 400, buckling device; 410, memory metal plate; 420, limit head; 430, limit protrusion;

[0058] 500, opening device; 510, sliding column; 520, compression spring; 530, pull rope;

[0059] 600, sliding device; 610, sliding frame; 620, first trapezoidal block;

[0060] 700, driving device; 710, rotating plate; 720, handle; 730, second trapezoidal block;

[0061] 800, positioning member; 810, articulated frame; 820, swing arm; 830, snap-fit ​​sleeve; 840, permanent magnet. DETAILED DESCRIPTION

[0062] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0063] Reference Figure 1-5 A quick connection device for a straight beam truss structure and a connection method thereof are shown, comprising:

[0064] Truss body 100;

[0065] A receiving member 200, wherein two receiving members 200 are provided and are respectively fixed at two ends of the truss body 100, and the receiving member 200 is integrally formed with the truss body 100;

[0066] A connecting frame 300, the connecting frame 300 is detachably fixedly connected to the receiving member 200;

[0067] The buckling device 400 is provided with four buckling devices 400, and is respectively fixed on the four sides of the connecting frame 300 and passes through the receiving member 200;

[0068] The spreading device 500 is installed on the connecting frame 300 and can slide through the buckling device 400 to spread the buckling device 400;

[0069] A sliding device 600, which is slidably installed inside the connecting frame 300 and pulls the opening device 500 to slide;

[0070] A driving device 700, which is rotatably mounted inside the connecting frame 300 and pushes the sliding device 600 to slide;

[0071] The positioning members 800 are provided in four numbers and are hinged to the outside of the driving device 700 . After rotation, the positioning members 800 are buckled to the outside of the buckling device 400 and the opening device 500 to limit the rotation of the driving device 700 .

[0072] During installation, the connecting frame 300 is spliced ​​with the receiving member 200, and the buckling device 400 is pushed through the receiving member 200 to be buckled on the other side wall of the receiving member 200 for limiting the position to complete the splicing and fixing of the truss body 100;

[0073] After the buckling device 400 is buckled, the positioning member 800 is rotated to open the positioning member 800 and drive the driving device 700 to rotate. The driving device 700 drives the sliding device 600 and the opening device 500 to move and store force. When the opening device 500 slides, the buckling device 400 is opened to a limited position, so that the buckling device 400 can still ensure the stability between the truss bodies 100 under the influence of vibration or other external forces. After rotating to a corresponding angle, the positioning member 800 is rotated to make the positioning member 800 buckle on the outside of the opening device 500 and adsorb with the opening device 500 to prevent the driving device 700 from rotating under the action of vibration.

[0074] During disassembly, the positioning member 800 is rotated to open the positioning member 800 and drive the driving device 700 to rotate, so that the driving device 700 releases the push restriction on the sliding device 600 and the opening device 500, so that the sliding device 600 and the opening device 500 are reset under the action of elastic force, and the restriction on the buckling device 400 is released, so that the buckling device 400 can be deformed and removed from the receiving member 200, so that the truss body 100 can be disassembled and reused;

[0075] The two truss bodies 100 are fixed together through the connection frame 300 by the arrangement of the fastening device 400 and the opening device 500, while avoiding the involvement of bolts, avoiding loosening under the influence of vibration or other external forces, and ensuring the stability between the trusses;

[0076] The opening device 500 is slid to open the buckling device 400 and fix the two truss bodies 100 together, and the buckling device 400 can also be opened to ensure the normal disassembly of the two truss bodies 100, so that the truss bodies 100 can be reused.

[0077] The positioning member 800 cooperates with the locking device 400 and the opening device 500 and restricts the driving device 700 to prevent the driving device 700 from rotating under the action of vibration.

[0078] In some embodiments of the present invention, reference Figure 5 As shown, the receiving member 200 includes:

[0079] A receiving plate 210, the receiving plate 210 is fixed to the end of the truss body 100;

[0080] The plug-in through holes 220 are provided with four plug-in through holes 220 , which are respectively opened on the four sides of the receiving plate 210 and correspond to the buckling devices 400 .

[0081] The matching arrangement of the receiving plate 210 and the plug-in through hole 220 allows the snap-fit ​​device 400 to pass through normally, and fixes the connecting frame 300 and the receiving plate 210 together, thereby ensuring the normal installation or disassembly of the truss body 100 .

[0082] In some embodiments of the present invention, reference Figure 2 As shown, baffles 310 connected to the propping device 500 are fixedly mounted on the inner walls of the four sides of the connecting frame 300 .

[0083] The baffle 310 is provided to ensure that the expansion device 500 is normally installed and fixed, so that the expansion device 500 can be compressed and stored normally during the sliding process, and move in a predetermined direction when the force is released.

[0084] In some embodiments of the present invention, reference Figure 3 and Figure 4 As shown, the fastening device 400 includes:

[0085] A memory metal plate 410 , wherein a plurality of memory metal plates 410 are provided and fixed to the outside of the connection frame 300 in a ring array and pass through the plug-in through hole 220 ;

[0086] A limit head 420, which is fixed to the end of the memory metal plate 410 and contacts the receiving plate 210;

[0087] The limiting protrusion 430 is fixed on the inner side of the memory metal plate 410 and limits the sliding range of the expansion device 500 .

[0088] When the memory metal plate 410 and the limit head 420 pass through the plug-in through hole 220, the limit head 420 moves toward the center of the circle due to the obstruction of the inner wall of the plug-in through hole 220, and drives the memory metal plate 410 to deform during the movement. After the limit head 420 passes through the plug-in through hole 220, the restriction of the limit head 420 is released, and the memory metal plate 410 drives the limit head 420 to contact and limit the side wall of the receiving plate 210, thereby completing the fixation.

[0089] The limiting head 420 is arranged to contact the receiving plate 210 and limit the relative position of the receiving plate 210 and the connecting frame 300, thereby ensuring the stability of the receiving plate 210 and the connecting frame 300 after installation;

[0090] The limit head 420 passes through the plug-in through hole 220 to deform the memory metal plate 410, and deforms the memory metal plate 410 to a parallel state and is in a deformation storage state, and then passes through the plug-in through hole 220 to restore and drive the limit head 420 to move outward and push the connection frame 300 and the receiving plate 210 closer to improve the tightness;

[0091] Among them, the setting of the limiting protrusion 430 limits the sliding range of the propping device 500 to prevent the propping device 500 from being out of contact with the limiting head 420 under the action of tension, causing the limiting head 420 to slide under external force and affect the stability of the connection between the connecting frame 300 and the receiving plate 210.

[0092] In some embodiments of the present invention, reference Figure 3 and Figure 4 As shown, the expansion device 500 includes:

[0093] A sliding post 510 , the sliding post 510 is slidably mounted on the connecting frame 300 and contacts the memory metal plate 410 ;

[0094] A compression spring 520, two ends of which are fixedly connected to the sliding column 510 and the baffle 310 respectively;

[0095] The pull rope 530 is fixed on the sliding column 510 and passes through the baffle 310 to be fixedly connected with the sliding device 600 .

[0096] When the sliding device 600 slides, the pull rope 530 pulls the sliding column 510 to move, so that the sliding column 510 contacts the memory metal plate 410 and the limit head 420, and restricts the memory metal plate 410 and the limit head 420, so that the memory metal plate 410 cannot be deformed, and in the process of the movement of the sliding column 510, the compression spring 520 is squeezed to compress and store force;

[0097] After the restriction of the sliding device 600 is released, the elastic force of the compression spring 520 is released, so that the compression spring 520 pushes the sliding column 510 to disengage from the memory metal plate 410 and the limit head 420, so that the limit head 420 can drive the memory metal plate 410 to deform, so that the memory metal plate 410 is pulled by an external force or the limit head 420 is pushed by an external force, and drives the memory metal plate 410 to deform and disengage from the plug-in through hole 220 to complete the disassembly of the truss body 100;

[0098] The sliding column 510 is composed of a head and a body. The diameter of the head of the sliding column 510 is larger than the diameter of the body of the sliding column 510. When the head of the sliding column 510 contacts the memory metal plate 410 and the limit head 420, the limit head 420 is restricted. When the body of the sliding column 510 corresponds to the memory metal plate 410 and the limit head 420, the restriction on the limit head 420 is released.

[0099] The compression spring 520 is provided to compress and store force when the sliding column 510 slides, and the sliding column 510 limits the position of the memory metal plate 410, and pushes the sliding column 510 to return to its original position after the pulling force of the pull rope 530 on the sliding column 510 disappears;

[0100] The pull rope 530 is arranged to pull the sliding column 510 to slide synchronously when the sliding device 600 slides.

[0101] In some embodiments of the present invention, Figure 3 and Figure 4 As shown, the sliding device 600 includes:

[0102] A sliding frame 610, which is slidably mounted inside the connecting frame 300 and fixedly connected to the pull rope 530;

[0103] A first trapezoidal block 620 , wherein a plurality of first trapezoidal blocks 620 are provided and fixed on the sliding frame 610 in a ring array.

[0104] When the sliding frame 610 and the first trapezoidal block 620 slide under the drive of the driving device 700, the pull rope 530 drives the sliding column 510 to move and limit the memory metal plate 410 and the limit head 420, and when the sliding column 510 moves under the action of the elastic force, the sliding frame 610 is pulled to slide and reset;

[0105] The sliding frame 610 is arranged to contact the inner wall of the connecting frame 300 to prevent the connecting frame 300 from tilting under the push of external force;

[0106] The sliding frame 610 is connected to the pull rope 530 , and the sliding frame 610 and the sliding column 510 slide synchronously under the action of the pull rope 530 .

[0107] In some embodiments of the present invention, reference Figure 3 and Figure 4 As shown, the driving device 700 includes:

[0108] A rotating plate 710, the rotating plate 710 is rotatably installed inside the connecting frame 300;

[0109] A handle 720, which is fixed to one side of the rotating plate 710 and extends to the outside of the connecting frame 300;

[0110] The second trapezoidal block 730 is provided in plurality and is fixed in a ring shape on the other side of the rotating plate 710 , and is pressed against the first trapezoidal block 620 when the rotating plate 710 rotates.

[0111] The worker rotates the handle 720 to rotate the rotating plate 710, and the rotating plate 710 drives the second trapezoidal block 730 to rotate, so that the second trapezoidal block 730 and the inclined surface of the first trapezoidal block 620 contact and squeeze each other when the second trapezoidal block 730 rotates. Since the rotation of the rotating plate 710 is limited by the inner wall of the connecting frame 300, the second trapezoidal block 730 pushes the first trapezoidal block 620 and the rotating plate 710 to move, and pulls the pull rope 530. When the first trapezoidal block 620 and the second trapezoidal block 730 slide to contact the plane, the first trapezoidal block 620 and the second trapezoidal block 730 can be normally positioned and will not be separated.

[0112] The handle 720 is rotated continuously to stagger the second trapezoidal block 730 and the first trapezoidal block 620, so that the second trapezoidal block 730 releases the restriction on the first trapezoidal block 620, and the first trapezoidal block 620 and the rotating plate 710 are reset under the pulling of the pull rope 530;

[0113] The second trapezoidal block 730 rotates and squeezes the first trapezoidal block 620 , so that the second trapezoidal block 730 pushes the first trapezoidal block 620 and the sliding frame 610 to move.

[0114] In some embodiments of the present invention, reference Figure 1 , Figure 3 , Figure 4 As shown, the positioning member 800 includes:

[0115] Articulated frames 810, four of which are arranged in a circular array and fixed on the outside of the handle 720;

[0116] A swing arm 820, the swing arm 820 is rotatably hinged on the hinge frame 810;

[0117] A buckle sleeve 830, which is fixed to the end of the swing arm 820 and buckled to the outer sides of the limit head 420 and the sliding column 510 when the swing arm 820 rotates;

[0118] Permanent magnet 840: two groups of permanent magnet 840 are provided and are fixed on the buckle sleeve 830 and the sliding column 510 respectively, and attract each other.

[0119] When rotating, the swing arm 820 is rotated so that the swing arm 820 rotates with the hinge frame 810 as the center and is tilted. Then, a rotational force is applied to the swing arm 820 so that the swing arm 820 drives the handle 720 to rotate. After the handle 720 rotates, the swing arm 820 is rotated again so that the swing arm 820 drives the buckling sleeve 830 to buckle on the outer side of the limit head 420, and the two permanent magnets 840 are attracted to each other, and the buckling sleeve 830 is ensured to be stable after being buckled.

[0120] The interior of the buckle sleeve 830 is elastic, so that the buckle sleeve 830 can be normally buckled on the outer side of the limit head 420;

[0121] The setting of the swing arm 820 can reduce the external force required for the rotation of the handle 720 under the action of the torque, thereby facilitating the rotation operation of the handle 720;

[0122] The permanent magnet 840 is provided to ensure the stability of the buckle sleeve 830 after buckling, and prevent the buckle sleeve 830 from opening easily under the action of external force.

[0123] In some embodiments of the present invention, reference Figure 2 As shown, guide frames 320 are fixedly installed on both sides of the connecting frame 300, so that the swing arm 820 is inserted into the inside of the guide frame 320 when swinging, and is guided by the inclined inner wall of the guide frame 320 to adjust the position.

[0124] When the swing arm 820 rotates to drive the snap-fit ​​sleeve 830 to snap onto the outer side of the limit head 420 , the inclined surface of the guide frame 320 will adjust the position of the swing arm 820 , so that the swing arm 820 drives the snap-fit ​​sleeve 830 to adjust its position and snap onto the outer side of the limit head 420 .

[0125] The present invention also provides a connection method for a quick connection device for a straight beam truss structure, which is used for the quick connection device in the above embodiment, referring to Figure 1-5 As shown, the following steps are included:

[0126] Step 1: First, push the connecting frame 300 so that the connecting frame 300 drives the buckling device 400 to pass through the receiving member 200;

[0127] Step 2: Then rotate the positioning member 800 to open the positioning member 800 and drive the driving device 700 to rotate, so that the driving device 700 drives the sliding device 600 and the opening device 500 to move, and accumulates force, so that the opening device 500 slides to open the buckling device 400 to a limited position, and completes the connection between the connecting frame 300 and the receiving member 200;

[0128] Step 3: Then rotate the positioning member 800. When the positioning member 800 rotates, the guide frame 320 will adjust the position of the swing arm 820 in the positioning member 800 through the inclined surface, so that the swing arm 820 drives the locking sleeve 830 to lock on the outer side of the limit head 420.

[0129] The above shows and describes the basic principles and main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A quick connection device for a straight beam truss structure, characterized in that: include: Truss body (100); A receiving member (200), wherein two receiving members (200) are provided and are respectively fixed at two ends of the truss body (100); A connecting frame (300), wherein the connecting frame (300) is detachably fixedly connected to the receiving member (200); A buckling device (400), wherein four buckling devices (400) are provided and are respectively fixed to four sides of the connecting frame (300) and pass through the receiving member (200); An opening device (500), the opening device (500) being mounted on the connecting frame (300) and being capable of sliding through the buckling device (400) and opening the buckling device (400); A sliding device (600), wherein the sliding device (600) is slidably installed inside the connecting frame (300) and pulls the spreading device (500) to slide; A driving device (700), wherein the driving device (700) is rotatably installed inside the connecting frame (300) and pushes the sliding device (600) to slide; The positioning members (800) are provided in four numbers and are hinged on the outside of the driving device (700). After rotation, the positioning members (800) are buckled on the outside of the buckling device (400) and the spreading device (500) to limit the rotation of the driving device (700).

2. A quick connection device for a straight beam truss structure according to claim 1, characterized in that: The receiving member (200) comprises: A receiving plate (210), wherein the receiving plate (210) is fixed to an end of the truss body (100); The plug-in through holes (220) are provided with four plug-in through holes (220), which are respectively opened on four sides of the receiving plate (210) and correspond to the buckling devices (400).

3. A quick connection device for a straight beam truss structure according to claim 1, characterized in that: Baffles (310) connected to the opening device (500) are fixedly mounted on the inner walls of the four sides of the connection frame (300).

4. A quick connection device for a straight beam truss structure according to claim 2, characterized in that: The buckling device (400) comprises: A memory metal plate (410), wherein a plurality of the memory metal plates (410) are provided and fixed to the outside of the connection frame (300) in an annular array and pass through the plug-in through hole (220); A limit head (420), wherein the limit head (420) is fixed to the end of the memory metal plate (410) and is in contact with the receiving plate (210); A limiting protrusion (430) is fixed on the inner side of the memory metal plate (410) and limits the sliding range of the expansion device (500).

5. A quick connection device for a straight beam truss structure according to claim 3, characterized in that: The expansion device (500) comprises: A sliding post (510), wherein the sliding post (510) is slidably mounted on the connection frame (300) and is in contact with the memory metal plate (410); A compression spring (520), wherein two ends of the compression spring (520) are respectively fixedly connected to the sliding column (510) and the baffle (310); A pull rope (530), wherein the pull rope (530) is fixed on the sliding column (510) and passes through the baffle (310) to be fixedly connected to the sliding device (600).

6. A quick connection device for a straight beam truss structure according to claim 5, characterized in that: The sliding device (600) comprises: A sliding frame (610), wherein the sliding frame (610) is slidably mounted inside the connecting frame (300) and is fixedly connected to the pull rope (530); A first trapezoidal block (620), wherein a plurality of the first trapezoidal blocks (620) are provided and fixed on the sliding frame (610) in a ring array.

7. A quick connection device for a straight beam truss structure according to claim 6, characterized in that: The driving device (700) comprises: A rotating plate (710), the rotating plate (710) being rotatably mounted inside the connecting frame (300); A handle (720), wherein the handle (720) is fixed to one side of the rotating plate (710) and extends to the outside of the connecting frame (300); A second trapezoidal block (730), wherein a plurality of the second trapezoidal blocks (730) are provided and are fixed in a ring shape on the other side of the rotating plate (710), and are pressed against the first trapezoidal block (620) when the rotating plate (710) rotates.

8. A quick connection device for a straight beam truss structure according to claim 7, characterized in that: The positioning member (800) comprises: Articulated frames (810), wherein four articulated frames (810) are provided and fixed on the outside of the handle (720) in a circular array; A swing arm (820), wherein the swing arm (820) is rotatably hinged on the hinge frame (810); A buckling sleeve (830), wherein the buckling sleeve (830) is fixed to the end of the swing arm (820) and buckled to the outer sides of the limit head (420) and the sliding column (510) when the swing arm (820) rotates; Permanent magnets (840), wherein two groups of permanent magnets (840) are provided and are respectively fixed on the buckle sleeve (830) and the sliding column (510) and attract each other.

9. A quick connection device for a straight beam truss structure according to claim 8, characterized in that: Guide frames (320) are fixedly mounted on both sides of the connection frame (300), so that the swing arm (820) is inserted into the interior of the guide frame (320) when swinging, and its position is adjusted by the guide frame (320).

10. A method for connecting a quick connection device of a straight beam truss structure, characterized in that: The following steps are involved: Step 1: First, push the connecting frame (300) so that the connecting frame (300) drives the fastening device (400) to pass through the receiving member (200); Step 2: Then, the positioning member (800) is rotated to open the positioning member (800) and drive the driving device (700) to rotate, so that the driving device (700) drives the sliding device (600) and the opening device (500) to move, and accumulates force, so that the opening device (500) slides to open the buckling device (400) to a limited position, thereby completing the connection between the connecting frame (300) and the receiving member (200); Step 3: Then rotate the positioning member (800). When the positioning member (800) rotates, the guide frame (320) will adjust the position of the swing arm (820) in the positioning member (800) through the inclined surface, so that the swing arm (820) drives the locking sleeve (830) to lock on the outer side of the limit head (420).

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