Multifunctional connecting device for FRP ribs and using method

Abstract

The invention relates to a multifunctional connecting device for FRP ribs and a using method.The multifunctional connecting device for the FRP ribs comprises a closed ring and two symmetrically-arranged connecting sleeves, each connecting sleeve comprises a sleeve, a connecting ring is slidably arranged in each sleeve, the closed ring is slidably connected with the two sleeves, and the closed ring is arranged between the two connecting rings; the two ends of the closed ring abut against the two connecting rings in a sealed mode respectively, the connecting rings and the sleeve cannot rotate relatively, the closed ring and the sleeve cannot rotate relatively, the connecting rings can be in threaded fit with the FRP ribs, the connecting rings are used for fixing the connecting sleeves so that the two connecting sleeves can be fixed to the two FRP ribs respectively, the inner wall of the closed ring is provided with a glue storage groove, and the glue storage groove is annularly formed. The glue storage groove is used for storing glue and connecting the end faces of the two FRP ribs, and a limiting pin is arranged on the sleeve and used for limiting relative sliding of the sleeve and the closed ring. By means of the device, the bonding effect of the two FRP ribs can be guaranteed, and the bonding condition can be observed by pulling out the limiting pins.

Description

Technical Field

[0001] The present invention relates to the technical field of FRP bar connection, and in particular to a multifunctional connection device for FRP bars and a use method thereof. Background Art

[0002] FRP bars are formed by gluing multiple strands of continuous fibers (such as glass fibers, carbon fibers, etc.) through base materials (such as polyamide resin, polyethylene resin, epoxy resin, etc.), extruding and drawing through special molds. Common fiber materials used in FRP bars are generally glass fiber reinforced plastics (GFRP for short), carbon fiber reinforced plastics (CFRP for short), aramid fiber reinforced plastics (AFRP bars), etc. Due to their advantages of light weight, high tensile strength, strong corrosion resistance, strong material bonding, and strong magnetic wave permeability, they have been widely used in structural reinforcement and engineering renovation at home and abroad in recent years.

[0003] The currently existing FRP bar connecting device cannot visually observe the joint position of two FRP bars when in use. When injecting a high-strength curing colloid such as high-strength resin glue, there may be a problem of insufficient injection affecting the connection strength. Therefore, a multifunctional FRP bar connecting device is proposed, which can visually observe the connection status of the joint position and fully inject a high-strength curing colloid and facilitate more intuitive quality inspection of the FRP connecting device. Summary of the invention

[0004] The purpose of the present invention is to address the defects of the prior art and provide a multifunctional connecting device for FRP bars and a method of use. The device can ensure the bonding effect of two FRP bars, and the bonding condition can be observed by pulling out the limit pin.

[0005] In order to solve the above technical problems, in a first aspect, the present invention provides a multifunctional connecting device for FRP bars, comprising a closed ring and two symmetrically arranged connecting sleeves, the connecting sleeve comprising a sleeve, a connecting ring being slidably arranged in the sleeve, the closed ring being slidably connected to the two sleeves, the closed ring being arranged between the two connecting rings, the two ends of the closed ring being respectively in sealing contact with the two connecting rings, the connecting ring and the sleeve, and the closed ring and the sleeve being unable to rotate relative to each other, the connecting ring being threadably matched with the FRP bar, the connecting ring being used to fix the connecting sleeve, so that the two connecting sleeves are respectively fixed on the two FRP bars, a glue storage groove is provided on the inner wall of the closed ring, the glue storage groove is arranged circumferentially, the glue storage groove is used to store colloid and connect the end faces of the two FRP bars, a limit pin is provided on the sleeve, the limit pin is used to limit the relative sliding of the sleeve and the closed ring, when the limit pin is pulled out, the two sleeves can respectively move in a direction away from the closed ring, so that the closed ring is exposed to the outside and the colloid can be injected into the glue storage groove through the closed ring or the connection status of the two FRP bars can be observed.

[0006] In some embodiments, the closed ring includes two semi-cylinders and a slide bar, the two semi-cylinders are rotatably connected to the two sides of the slide bar respectively, the two semi-cylinders are detachably connected, the glue storage tank is opened on the inner wall of the semi-cylinder, the sleeve opens a placement groove, the slide bar is slidably set in the placement groove and fits with the inner wall of the placement groove, the length of the slide bar is greater than the length of the semi-cylinder, so that after the two semi-cylinders are exposed to the outside, the slide bar and the sleeve are still slidably connected.

[0007] Furthermore, a connecting plate is provided on each of the two semi-cylinders, and two limiting holes are formed on the connecting plate. The two limiting holes are respectively matched with the limiting pins on the two sleeves.

[0008] Furthermore, a slot is provided in the inner wall of the sleeve along the axial direction, the connecting plate is slidably arranged in the slot, a connecting hole is provided on the wall of the sleeve, the connecting hole is arranged corresponding to the limiting hole, the connecting hole passes through the slot and penetrates the sleeve, so that the limiting pin can be inserted into the limiting hole through the connecting hole.

[0009] Furthermore, a sliding groove is provided on the inner wall of the sleeve along the axial direction, and the sliding groove of the connecting sleeve passes through the sleeve near one end of the adjacent connecting sleeve. A slider is fixedly arranged on the outer wall of the connecting ring, and the slider is slidably arranged in the sliding groove, and the slider is fitted with the inner wall of the sliding groove.

[0010] Furthermore, the length of the slot is less than or equal to half the length of the semi-cylinder.

[0011] Furthermore, the length of the slide groove is smaller than the sum of the lengths of the connecting ring and the clamping groove, so that when the limiting pin is inserted into the limiting hole, the end surface of the closing ring and the connecting ring are in sealing contact.

[0012] Furthermore, the two semi-cylinders are snap-fitted or connected by threads.

[0013] In some embodiments, a sealing strip is provided on the end surface of the closing ring or the connecting ring.

[0014] In a second aspect, the present invention provides a method for using a multifunctional connecting device for FRP bars, comprising:

[0015] Insert two FRP bars from the ends of the two sleeves away from the closed ring respectively, and connect them with the connecting ring by threads, and make the connection between the two FRP bars be located within the range of the glue storage groove of the closed ring;

[0016] Pull out the stop pin and slide the two sleeves away from the connection between the two FRP bars so that the closed ring is completely exposed;

[0017] Open the closed loop, inject colloid into the glue storage tank, and close the closed loop;

[0018] Slide the two sleeves towards the connection between the two FRP bars, insert the stop pins, and wait for the colloid to connect the two FRP bars;

[0019] Pull out the limit pin and slide the two sleeves away from the connection between the two FRP bars, open the closed ring, and observe the connection status of the two FRP bars.

[0020] The beneficial effects of the present invention are:

[0021] 1. The connecting ring of the present invention can be fixed on the FRP bar, and the closed ring is positioned so that the connecting surface of the two FRP bars is located within the length range of the glue storage tank of the closed ring. The two FRP bars are bonded by injecting colloid into the glue storage tank of the closed ring. During the bonding process, the connecting sleeve and the closed ring can be fixedly connected by a limit pin, so that the two FRP bars are relatively fixed to ensure the bonding effect, and the bonding condition can be observed by pulling out the limit pin.

[0022] 2. The closed ring of the present invention comprises two semi-cylinders and a slide bar, wherein the two semi-cylinders are rotatably connected to the slide bar, and the glue storage tank can be injected with glue by rotating the semi-cylinders.

[0023] 3. The present invention provides a card slot and a connecting hole on the sleeve, and a connecting plate is provided on the semi-cylinder. A limiting hole is provided on the connecting plate, so that the limiting pin can be inserted into the limiting hole through the connecting hole, thereby achieving a fixed connection between the connecting sleeve and the closed ring.

[0024] 4. The length of the slot of the present invention is less than or equal to half the length of the semi-cylinder, and the length of the slide groove is less than the sum of the lengths of the connecting ring and the slot, so that when the limit pin is inserted into the limit hole, the end faces of the closed ring and the connecting ring are sealed and abutted, ensuring the space seal formed by the closed ring and the connecting ring to prevent the colloid from flowing out. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the closed loop after exposure of the present invention;

[0027] Figure 3 It is a schematic structural diagram of another viewing angle after the closed ring of the present invention is exposed;

[0028] Figure 4 It is a schematic diagram of the internal structure when the sleeve of the present invention is fixedly connected to the closed ring.

[0029] Figure numerals: connecting sleeve 1; sleeve 11; placement groove 111; clamping groove 112; connecting hole 113; sliding groove 114; limiting pin 115; connecting ring 12; sliding block 121; closing ring 2; sliding bar 21; semi-cylinder 22; connecting plate 221; limiting hole 222; glue storage groove 223; bolt 224; FRP rib 3. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] like Figure 1 , 2 As shown, the present invention provides a multifunctional connecting device for FRP bars, comprising a closed ring 2 and two symmetrically arranged connecting sleeves 1, the connecting sleeve 1 comprising a sleeve 11, a connecting ring 12 is slidably arranged in the sleeve 11, the cross sections of the sleeve 11, the closed ring 2 and the connecting ring 12 are all circular and coaxially arranged, the closed ring 2 is slidably connected to the two sleeves 11, the inner diameter of the sleeve 11 is slightly larger than the outer diameters of the closed ring 2 and the connecting ring 12, the closed ring 2 is arranged between the two connecting rings 12, and the two ends of the closed ring 2 are respectively sealed and abutted against the two connecting rings 12 ( Figure 1In the state shown), the connecting ring 12 and the sleeve 11, and the closing ring 2 and the sleeve 11 cannot rotate relative to each other. The inner wall of the connecting ring 12 is provided with an internal thread, and the connecting ring 12 can be threadedly matched with the FRP reinforcement 3. The connecting ring 12 is used to fix the connecting sleeve 1, so that the two connecting sleeves 1 are respectively fixed on the two FRP reinforcements 3. The inner wall of the closing ring 2 is provided with a glue storage groove 223, and the glue storage groove 223 is arranged in an annular direction. The glue storage groove 223 is used to store colloid and connect the end faces of the two FRP reinforcements 3. A limit pin 115 is provided on the sleeve 11, and the limit pin 115 is used to limit the relative sliding of the sleeve 11 and the closing ring 2. When the limit pin 115 is pulled out, the two sleeves 11 can move away from the closing ring 2 respectively, so that the closing ring 2 is exposed to the outside and the colloid can be injected into the glue storage groove 223 through the closing ring 2 or the connection status of the two FRP reinforcements 3 can be observed.

[0032] It can be understood that, after the connecting rings 12 of the two connecting sleeves 1 are respectively threadedly connected to the two FRP bars 3, if the limit pin 115 is used to connect the sleeve 11 to the closed ring 2, then when the connecting ring 12 does not rotate, the entire structure and the two FRP bars 3 can remain relatively fixed, and the fixing effect of the colloid on the two FRP bars 3 can be ensured. In addition, by pulling out the limit pin 115 and sliding the two sleeves 11 out, the closed ring 2 can be exposed to the outside, and the colloid can be injected or the connection status of the two FRP bars 3 can be observed.

[0033] In some embodiments, Figure 2 , 3 As shown, the closed ring 2 includes two semi-cylinders 22 and a slide bar 21. The two semi-cylinders 22 are rotatably connected to the two sides of the slide bar 21 respectively. The two semi-cylinders 22 are detachably connected. The glue storage groove 223 is opened on the inner wall of the semi-cylinder 22. The sleeve 11 opens a placement groove 111. The slide bar 21 is a rectangular strip structure. The slide bar 21 is slidably set in the placement groove 111 and fits with the inner wall of the placement groove 111. The length of the slide bar 21 is greater than the length of the semi-cylinder 22, so that after the two semi-cylinders 22 are exposed to the outside, the slide bar 21 is still slidably connected to the sleeve 11.

[0034] It should be noted that Figure 2 The width of the glue storage groove 223 is for illustration only, and the width of the glue storage groove 223 can be set to half the length of the closed loop 2 to ensure the bonding effect.

[0035] Furthermore, a connecting plate 221 is disposed on each of the two semi-cylinders 22 , and two limiting holes 222 are formed on the connecting plate 221 . The two limiting holes 222 are respectively matched with the limiting pins 115 on the two sleeves 11 .

[0036] In some embodiments, the connecting plates 221 of the two semi-cylinders 22 can be snap-fitted or threadedly connected via bolts 224 .

[0037] Furthermore, if Figure 2 As shown, a slot 112 is axially provided on the inner wall of the sleeve 11, and a connecting plate 221 is slidably arranged in the slot 112. A connecting hole 113 is provided on the wall of the sleeve 11, and the connecting hole 113 is arranged corresponding to the limiting hole 222. The connecting hole 113 passes through the slot 112 and penetrates the sleeve 11, so that the limiting pin 115 can be inserted into the limiting hole 222 through the connecting hole 113.

[0038] Furthermore, if Figure 4 As shown, a slide groove 114 is axially provided on the inner wall of the sleeve 11, and the slide groove 114 of the connecting sleeve 1 passes through the sleeve 11 at one end close to the adjacent connecting sleeve 1, and a slider 121 is fixedly arranged on the outer wall of the connecting ring 12, and the slider 121 is slidably arranged in the slide groove 114, and the slider 121 fits with the inner wall of the slide groove 114.

[0039] In some embodiments, the length of the slot 112 is less than or equal to half the length of the semi-cylinder 22, and the length of the slide groove 114 is less than the sum of the lengths of the connecting ring 12 and the slot 112, so that when the limit pin 115 is inserted into the limit hole 222, the closed ring 2 is sealed against the end face of the connecting ring 12.

[0040] In some embodiments, in order to improve the sealing effect, a sealing strip is provided on the end surface of the closing ring 2 or the connecting ring 12 , and a sealing strip is provided between the two connecting plates 221 .

[0041] The present invention also provides a method for using a multifunctional connecting device for FRP bars, comprising:

[0042] like Figure 4 As shown, one FRP rib 3 is rotated and inserted from the left end of the left connecting sleeve 1, and is threadedly connected with the connecting ring 12 of the left connecting sleeve 1, and another FRP rib 3 is rotated and inserted from the right end of the right connecting sleeve 1, and is threadedly connected with the connecting ring 12 of the right connecting sleeve 1, and the two FRP ribs 3 are abutted and the connection of the two FRP ribs 3 is located within the range of the glue storage groove 223 of the closed ring 2;

[0043] like Figure 2 As shown, the stop pin 115 is pulled out, and the two connecting sleeves 1 are respectively slid in the direction away from the connection between the two FRP bars 3, that is, the left sleeve 11 is moved to the left to be flush with the left connecting ring 12, and the right sleeve 11 is moved to the right to be flush with the right connecting ring 12, so that the closed ring 2 is completely exposed;

[0044] like Figure 2 As shown, unscrew the bolt 224, open the closed ring 2, inject colloid into the glue storage tank 223, and then close the closed ring 2 again;

[0045] Slide the two sleeves 11 towards the direction close to the connection of the two FRP bars 3, that is, slide the left sleeve 11 to the right and the right sleeve 11 to the left, so that the two ends of the closed ring 2 are sealed against the connecting ring 12. At this time, the limiting hole 222 on the connecting plate 221 of the closed ring 2 is just aligned with the connecting hole 113, and the limiting pin 115 is inserted into the connecting hole 113 to fix the sleeve 11, and wait for the colloid to connect the two FRP bars 3;

[0046] Pull out the limiting pin 115 , slide the two connecting sleeves 1 in the direction away from the connection between the two FRP bars 3 , open the closed ring 2 , and observe the connection status of the two FRP bars 3 .

[0047] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A multifunctional connection device for FRP bars, characterized in that: The invention comprises a closed ring (2) and two symmetrically arranged connecting sleeves (1), wherein the connecting sleeve (1) comprises a sleeve (11), a connecting ring (12) is slidably arranged in the sleeve (11), the closed ring (2) is slidably connected to the two sleeves (11), the closed ring (2) is arranged between the two connecting rings (12), the two ends of the closed ring (2) are respectively in sealing contact with the two connecting rings (12), the connecting ring (12) and the sleeve (11) and the closed ring (2) and the sleeve (11) are both unable to rotate relative to each other, the connecting ring (12) can be threadedly matched with the FRP rib (3), and the connecting ring (12) is used to fix the connecting sleeve (1), so that the two connecting sleeves (1) are respectively fixed. The sealing ring (2) is fixed on two FRP bars (3). The inner wall of the sealing ring (2) is provided with a glue storage groove (223). The glue storage groove (223) is arranged in a ring direction. The glue storage groove (223) is used to store colloid and connect the end faces of the two FRP bars (3). A limit pin (115) is provided on the sleeve (11). The limit pin (115) is used to limit the relative sliding of the sleeve (11) and the sealing ring (2). When the limit pin (115) is pulled out, the two sleeves (11) can move in a direction away from the sealing ring (2), so that the sealing ring (2) is exposed to the outside and the colloid can be injected into the glue storage groove (223) through the sealing ring (2) or the connection status of the two FRP bars (3) can be observed.

2. The multifunctional connecting device for FRP bars according to claim 1, characterized in that: The closed ring (2) comprises two semi-cylinders (22) and a slide bar (21); the two semi-cylinders (22) are rotatably connected to the two sides of the slide bar (21) respectively; the two semi-cylinders (22) are detachably connected; the glue storage groove (223) is provided on the inner wall of the semi-cylinder (22); the sleeve (11) is provided with a placement groove (111); the slide bar (21) is slidably arranged in the placement groove (111) and fits with the inner wall of the placement groove (111); the length of the slide bar (21) is greater than the length of the semi-cylinder (22), so that after the two semi-cylinders (22) are exposed to the outside, the slide bar (21) and the sleeve (11) are still slidably connected.

3. The multifunctional connecting device for FRP bars according to claim 2, characterized in that: A connecting plate (221) is provided on each of the two semi-cylinders (22). Two limiting holes (222) are provided on the connecting plate (221). The two limiting holes (222) respectively cooperate with the limiting pins (115) on the two sleeves (11).

4. The multifunctional connecting device for FRP bars according to claim 3, characterized in that: The inner wall of the sleeve (11) is provided with a slot (112) along the axial direction, and the connecting plate (221) is slidably arranged in the slot (112). The wall of the sleeve (11) is provided with a connecting hole (113), and the connecting hole (113) is arranged corresponding to the limiting hole (222). The connecting hole (113) passes through the slot (112) and penetrates the sleeve (11), so that the limiting pin (115) can be inserted into the limiting hole (222) through the connecting hole (113).

5. The multifunctional connecting device for FRP bars according to claim 4, characterized in that: The inner wall of the sleeve (11) is provided with a sliding groove (114) along the axial direction, and the sliding groove (114) of the connecting sleeve (1) passes through the sleeve (11) at one end close to the adjacent connecting sleeve (1), and a sliding block (121) is fixedly arranged on the outer wall of the connecting ring (12), and the sliding block (121) is slidably arranged in the sliding groove (114), and the sliding block (121) is in contact with the inner wall of the sliding groove (114).

6. The multifunctional connecting device for FRP bars according to claim 5, characterized in that: The length of the clamping groove (112) is less than or equal to half the length of the semi-cylinder (22).

7. The multifunctional connecting device for FRP bars according to claim 6, characterized in that: The length of the slide groove (114) is less than the sum of the lengths of the connecting ring (12) and the clamping groove (112), so that when the limiting pin (115) is inserted into the limiting hole (222), the end faces of the closing ring (2) and the connecting ring (12) are in sealing contact.

8. The multifunctional connecting device for FRP bars according to claim 2, characterized in that: The two semi-cylinders (22) are connected by snapping or threading.

9. The multifunctional connecting device for FRP bars according to any one of claims 1 to 8, characterized in that: A sealing strip is provided on the end surface of the closing ring (2) or the connecting ring (12).

10. A method for using the multifunctional connecting device for FRP bars according to any one of claims 1 to 9, characterized in that: include: Insert two FRP ribs (3) from the ends of the two sleeves (11) away from the closed ring (2) respectively, and threadedly connect them to the connecting ring (12), and make the connection between the two FRP ribs (3) be located within the range of the glue storage groove (223) of the closed ring (2); Pull out the stop pin (115), and slide the two sleeves (11) away from the connection between the two FRP bars (3) so that the closed ring (2) is completely exposed; Open the closed loop (2), inject colloid into the glue storage tank (223), and close the closed loop (2); Slide the two sleeves (11) respectively toward the connection point of the two FRP bars (3), insert the stop pin (115), and wait for the colloid to connect the two FRP bars (3); The stop pin (115) is pulled out, and the two sleeves (11) are respectively slid in a direction away from the connection between the two FRP bars (3), the closed ring (2) is opened, and the connection condition of the two FRP bars (3) is observed.

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