Maintenance and reinforcement equipment for bridge beam plate

Abstract

The invention relates to the technical field of bridge crack repairing, in particular to a bridge beam plate curing and reinforcing device which comprises a glue injection barrel, a glue injection opening and a glue pouring opening are formed in the glue injection barrel, a piston and an elastic piece are arranged in the glue injection barrel, the elastic piece pushes the piston to extrude repairing glue liquid to enter a crack, and an adjusting assembly is further arranged in the glue injection barrel. The adjusting assembly enables the force of the elastic piece for pushing the piston to be increased compared with the force of previous pushing, the repairing glue solution overcomes blockage in the crack and can permeate into the deepest position of the crack, and the multiple locking rods are arranged, so that the force of the elastic piece for pushing the piston each time is larger than the force of pushing the piston last time, and the repairing quality is improved. Therefore, the pushing force of the piston to the repairing glue solution is gradually improved, the glue solution in the crack can be ensured to be densely and uniformly distributed, the repairing quality problem caused by non-uniform flowing of the glue solution subsequently is avoided, and the strength after repairing is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge crack repair, and in particular to a maintenance and reinforcement device for bridge beams and slabs. Background Art

[0002] Maintenance and reinforcement equipment is primarily used to maintain and repair bridge structures, extending their service life and improving their load-bearing capacity and safety. When cracks appear in bridge structures, maintenance and reinforcement equipment can be used to repair them. Repair material is injected into the cracks to restore the structure's density, strength, and waterproofing.

[0003] For example, Chinese patent CN205577463U discloses a glue injector for repairing cracks in concrete structures. The solution includes a cylinder, a piston rod, a lower spring, a piston, and a handle. The lower end of the cylinder is provided with a glue injection port, and the upper end of the cylinder is provided with a top cover; the lower end of the piston rod is placed in the cylinder and is connected to the piston in the cylinder; the upper end of the piston rod is connected to the handle after passing through the top cover; the lower spring is sleeved on the piston rod, its upper end is connected to the top cover, and its lower end is connected to the piston; the piston rod is a hollow structure; the upper end of the piston rod is provided with a straight plug nozzle, the hollow part of the straight plug nozzle is connected to the hollow part of the piston rod; the straight plug nozzle is connected to the grouting machine through a hose; the hollow structure of the piston rod is connected to the cylinder, and the repair glue enters the cylinder through the hollow piston rod to push the piston to compress the lower spring. When the lower spring is released, it can push the piston, and then automatically inject the repair glue into the crack.

[0004] Since the depth and length of the crack are uncertain, multiple injections are required to repair the crack. When the above solution is used, the force exerted by the lower spring on the repair glue is the same each time the glue is injected. As the amount of repair glue in the crack increases, it becomes more difficult for the repair glue to enter the crack, resulting in the repair glue being unable to reach the deepest part of the crack, affecting the repair effect. Summary of the Invention

[0005] Based on this, it is necessary to provide a maintenance and reinforcement equipment for bridge beams and slabs to address the problem that the current repair glue cannot reach the deepest part of the cracks, affecting the repair effect.

[0006] The above purpose is achieved through the following technical solutions: A maintenance and reinforcement device for bridge beams and slabs, comprising: A glue injection cylinder, wherein the two ends of the glue injection cylinder are respectively provided with a glue injection port and a glue filling port, and the glue injection cylinder is provided with a grouting pipe along the axial direction, the grouting pipe is inserted into the grouting port, and the repair glue enters the glue injection cylinder through the grouting pipe; A piston is slidably disposed in the glue injection cylinder and is capable of sliding along the axial direction of the glue injection cylinder; an elastic member, wherein the elastic member is located between the piston and the glue injection port, and when the grouting pipe fills the glue injection cylinder with repair glue liquid, the repair glue liquid can push the piston to move to compress the elastic member, and when the grouting pipe stops filling the glue injection cylinder with repair glue liquid, the elastic member can push the piston to move in the opposite direction to squeeze out the repair glue liquid in the glue injection cylinder; An adjusting component is provided, wherein the adjusting component can adjust the force with which the elastic member pushes the piston. When the piston compresses the elastic member multiple times, the adjusting component gradually increases the force with which the elastic member pushes the piston.

[0007] Furthermore, the adjustment assembly includes a rotating plate and a locking rod, the rotating plate is located between the elastic member and the glue filling port, a ring sleeve is fixedly provided on the rotating plate, the ring sleeve is located on the outer periphery of the elastic member, the locking rod is slidably provided on the side wall of the ring sleeve, and the locking rod can be extended and retracted along the radial direction of the ring sleeve to lock or release the compressed elastic member; In the initial state, the locking rod is extended to lock the compressed elastic member, and the piston is able to push the ring sleeve to rotate after moving a preset distance toward the glue injection port, and the locking rod is shortened to release the compressed elastic member.

[0008] Furthermore, a sliding groove is provided on the inner wall of the glue injection cylinder at a position corresponding to the locking rod, and the sliding groove extends along the circumference of the glue injection cylinder. A compression spring is provided on one end of the locking rod away from the elastic member. The locking rod is not in the sliding groove in the initial state. The locking rod compresses the compression spring and extends radially along the ring sleeve. When the ring sleeve rotates, the locking rod is driven into the sliding groove, and the compression spring pushes the locking rod to shorten radially along the ring sleeve.

[0009] Furthermore, the locking rod has a wedge-shaped surface at one end close to the elastic member. When the elastic member is compressed, the outer periphery of the elastic member slides in contact with the wedge-shaped surface so that the locking rod is inserted into the elastic member.

[0010] Furthermore, the ring sleeve has a circle of teeth on one end close to the piston, each tooth has an inclined surface and a vertical surface, and the inclined surfaces and vertical surfaces of adjacent teeth are connected. A wedge block is provided on the piston at one end close to the ring sleeve. After the piston moves a preset distance toward the glue filling port, the wedge block slides in contact with the inclined surface of the teeth, and the piston continues to move to push the ring sleeve to rotate. When the wedge block contacts the vertical surface of the adjacent teeth, the ring sleeve stops rotating and the locking rod enters the slide groove.

[0011] Furthermore, the ring sleeve is provided with multiple locking rods, the heights of the multiple locking rods gradually decrease and the circumferences are evenly distributed on the side wall of the ring sleeve, and multiple sliding grooves are correspondingly provided on the inner wall of the injection cylinder. The multiple locking rods perform multi-level restrictions on the elastic member, and the ring sleeve unlocks one locking rod each time it rotates, and the unlocking order is from top to bottom.

[0012] Furthermore, a triangular block is provided on one end of the piston near the injection port, and a gear ring is fixedly provided on one end of the injection cylinder near the injection port. When the piston moves toward the injection port and the triangular block is in sliding contact with the teeth of the gear ring, the piston continues to move so that the teeth push the piston to rotate, and the rotation direction of the piston is the same as the rotation direction of the ring sleeve.

[0013] Furthermore, there are at least three locking rods.

[0014] Furthermore, a check valve is provided in the glue filling pipe.

[0015] Furthermore, a connecting plate is provided on the glue injection port, and the connecting plate can fix the glue injection port on the crack.

[0016] The beneficial effects of the present invention are: The present invention provides an adjustment component so that each time the elastic member pushes the piston, the force applied is greater than the previous time the piston was pushed, thereby gradually increasing the thrust of the piston on the repair glue, allowing the repair glue to overcome the blockage inside the crack and penetrate into the deepest part of the crack, thereby ensuring that every part inside the crack is fully filled with the repair glue, and also allowing the glue to fully diffuse in the crack, filling all gaps and small cracks, and gradually increasing the pressure to ensure that the glue in the crack is densely and evenly distributed, avoiding subsequent repair quality problems caused by uneven glue flow, and improving the strength after repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a bridge beam and slab maintenance and reinforcement device provided in one embodiment of the present invention; Figure 2 for Figure 1 A top view of a glue injection cylinder of a bridge beam and slab maintenance and reinforcement device provided in one embodiment; Figure 3 A perspective view of a glue injection cylinder of a bridge beam and slab maintenance and reinforcement device provided in one embodiment of the present invention; Figure 4 A schematic diagram of the internal structure of a glue injection cylinder of a bridge beam and slab maintenance and reinforcement device provided in one embodiment of the present invention; Figure 5 for Figure 4A partial enlarged view of part X of a maintenance and reinforcement device for a bridge beam and slab provided in one embodiment; Figure 6 for Figure 4 A top view of the internal structure of a glue injection cylinder of a bridge beam and slab maintenance and reinforcement device provided in one embodiment; Figure 7 for Figure 6 A cross-sectional view along AA of a maintenance and reinforcement device for a bridge beam and slab provided in one embodiment; Figure 8 for Figure 7 A partially enlarged view of part Y of the maintenance and reinforcement equipment for bridge beams and slabs provided in one embodiment.

[0018] in: 100, glue injection cylinder; 110, glue injection port; 120, glue injection tube; 121, check valve; 130, glue injection port; 140, connecting plate; 150, first chute; 160, second chute; 170, third chute; 200, piston; 201, through hole; 210, rotating plate; 220, ring sleeve; 221, sliding hole; 230, teeth; 231, inclined surface; 232, vertical surface; 240, wedge block; 250, gear ring; 251, small tooth; 260, triangular block; 270, elastic member; 300, first locking lever; 310, second locking lever; 320, third locking lever; 330, compression spring; 340, wedge surface; 400. Glue injection machine. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0021] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0022] Refer to the following Figures 1-8 To describe a maintenance and reinforcement device for bridge beams and slabs provided by the present invention.

[0023] A maintenance and reinforcement device for bridge beams and slabs is suitable for maintenance and repair of cracks in bridge structures, including a glue injection cylinder 100, which is used to fill repair glue into the cracks to maintain and repair the cracks. A glue injection port 130 and a glue filling port 110 are respectively provided at both ends of the glue injection cylinder 100. A glue filling tube 120 distributed along the axial direction of the glue injection cylinder 100 is provided in the glue injection cylinder 100, and the glue filling tube 120 is inserted into the glue filling port 110. A glue injection machine 400 is connected to the glue filling tube 120, and the opening of the glue injection machine 400 is connected to the glue filling tube 120. The glue injection machine 400 can fill the repair glue into the glue injection cylinder 100 through the glue filling tube 120. A piston 200 is slidingly provided inside the glue injection cylinder 100, and the outer periphery of the piston 200 is in sliding sealing contact with the interior of the glue injection cylinder 100. The piston 200 is fixedly connected to one end of the glue injection tube 120 located inside the glue injection cylinder 100, and a through hole 201 is opened on the piston 200, and the through hole 201 is connected to the glue injection tube 120. The repair glue in the glue injection tube 120 enters the cavity between the piston 200 and the glue injection port 130 through the through hole 201 on the piston 200, and an elastic member 270 is provided between the piston 200 and the end close to the glue injection port 110.

[0024] When the glue injection machine 400 injects glue into the glue injection cylinder 100, the repair glue enters the glue injection cylinder 100 from the glue injection tube 120. The glue injection speed of the glue injection machine 400 is relatively fast, so that most of the repair glue pushes the piston 200 to move toward the glue injection port 110 to compress the elastic member 270, thereby allowing the elastic member 270 to accumulate force. When the glue injection machine 400 stops injecting glue, the elastic member 270 begins to release, and the elastic member 270 pushes the piston 200 to move toward the glue injection port 130. The piston 200 pushes the repair glue out of the glue injection port 130 and enters the crack.

[0025] Since the depth and length of the crack are uncertain, multiple injections are required during the crack repair process, that is, the repair glue liquid needs to be replenished into the glue injection cylinder 100 multiple times. However, as the repair glue liquid in the crack increases, the resistance to the repair glue liquid increases, and the thrust of the elastic member 270 on the piston 200 needs to be increased so that the repair glue liquid can continue to enter the crack and completely penetrate the crack, thereby avoiding affecting the repair effect of the crack. Therefore, an adjustment component is provided in the glue injection cylinder 100, so that the elastic member 270 increases the elastic force of the elastic member 270 when the piston 200 is pushed to squeeze the repair glue liquid once and the piston 200 is pushed again after replenishing the repair glue liquid. That is, when the piston 200 pushes the repair glue liquid for the second time, the force of the elastic member 270 pushing the piston 200 is greater than the force of the last push of the piston 200, thereby increasing the force of the elastic member 270 pushing the piston 200, so that the force of the piston 200 pushing the repair glue liquid is increased, and the repair glue liquid can be completely penetrated into the crack.

[0026] Specifically, in an embodiment of the present invention, the adjustment assembly includes a rotating plate 210 and a locking rod, such as Figure 3 and Figure 5 As shown, the rotating plate 210 is located between the elastic member 270 and the glue filling port 110, and a through groove is provided in the middle of the rotating plate 210, which cooperates with the glue filling tube 120. A ring sleeve 220 is fixedly provided on the rotating plate 210, and the ring sleeve 220 is located on the outer periphery of the elastic member 270, and the locking rod is slidably provided on the side wall of the ring sleeve 220. In order to facilitate the connection between the locking rod and the ring sleeve 220, a sliding hole 221 is provided on the side wall of the ring sleeve 220, and the locking rod is located in the sliding hole 221. The locking rod can slide along the radial direction of the ring sleeve 220 so that one end of the locking rod has a function similar to telescopic.

[0027] When the locking rod is extended out of the sliding hole 221, the locking rod can limit the extension of the elastic member 270. In the initial state, the elastic member 270 is in a fully compressed state. At this time, the extended locking rod can lock the elastic member 270 compressed inside the ring sleeve 220, that is, the locking rod is inserted into the elastic member 270, and the locking rod limits the elastic member 270 between the locking rod and the rotating plate 210 to reset. The locking rod does not limit the elastic member 270 between the locking rod and the piston 200. Therefore, when the elastic member 270 pushes the piston 200 for the first time, the elastic member 270 is locked between the locking rod and the rotating plate 210. The part does not work, and when the piston 200 squeezes the repair glue, the glue injection machine 400 injects glue into the glue injection tube again, the piston 200 begins to compress the elastic part 270. When the piston 200 moves a preset distance, it can push the ring sleeve 220 to rotate. When the ring sleeve 220 rotates, it can make the locking rod move in the radial direction away from the axis of the ring sleeve 220. Therefore, the locking rod is equivalent to shortening the retracting sliding hole 221, thereby releasing the restriction of the compressed elastic part 270, so that the force of the elastic part 270 when pushing the piston 200 again is increased, which makes the piston 200 push the repair glue with greater force.

[0028] It should be noted that a wedge-shaped surface 340 is provided on one end of the locking rod close to the elastic member 270. Figure 8 As shown, the wedge-shaped surface 340 enables the outer periphery of the elastic member 270 to slide on the locking rod when the elastic member 270 is compressed so that the locking rod is inserted into the elastic member 270. The elastic member 270 in this embodiment is a spring. When the spring is compressed, the wedge-shaped surface 340 on one end of the locking rod can prevent the compression of the spring.

[0029] More specifically, the present invention adopts the following structure to realize the function of the locking rod moving along the radial direction of the ring sleeve 220. The specific structure is as follows: A sliding groove is provided on the inner wall of the glue injection cylinder 100 at a position corresponding to the locking rod. The sliding groove extends circumferentially along the glue injection cylinder 100. Both ends of the sliding groove have smooth curved surfaces. The smooth curved surfaces enable the locking rod to smoothly enter or exit the sliding groove. A compression spring 330 is provided on the end of the locking rod away from the elastic member 270. Figure 8 As shown, one end of the compression spring 330 is fixed to the outer wall of the ring sleeve 220, and the other end of the compression spring 330 is fixed to the end of the locking rod away from the elastic member 270. When the locking rod has not entered the sliding groove, the locking rod slides in contact with the inner wall of the injection cylinder 100, and the other end of the locking rod at this time extends into the interior of the ring sleeve 220, thereby restricting the compressed elastic member 270 inside the ring sleeve 220; and when the locking rod slides into the sliding groove, the compression spring 330 on the locking rod is no longer squeezed, and the compression spring 330 pushes the locking rod into the sliding groove, while the other end of the locking rod is separated from the interior of the ring sleeve 220, thereby releasing the restriction of the compressed elastic member 270.

[0030] It should be noted that, in order to realize the function of the piston 200 pushing the ring 220 to rotate, a circle of teeth 230 is provided on the end of the ring 220 close to the piston 200. Figure 4 and Figure 7 As shown, the teeth 230 have an inclined surface 231 and a vertical surface 232, and the inclined surfaces 231 and vertical surfaces 232 of adjacent teeth 230 are connected to each other, and a wedge block 240 is provided on the end of the piston 200 close to the ring sleeve 220. When the piston 200 moves a preset distance in the direction close to the glue injection port 110, the wedge block 240 on the piston 200 can contact the inclined surface 231 of the teeth 230. The piston 200 continues to move so that the wedge block 240 and the inclined surface 231 of the teeth 230 slide relative to each other. Since the piston 200 and the glue injection cylinder 100 are in contact with each other, the piston 200 and the glue injection cylinder 100 are in contact with each other. The inner wall has a large friction force, so it is difficult for the piston 200 to rotate relative to the injection cylinder 100, so that the ring sleeve 220 rotates relative to the injection cylinder 100, thereby realizing the function of the piston 200 pushing the ring sleeve 220 to rotate. When the ring sleeve 220 rotates, it drives the locking rod on the ring sleeve 220 to rotate synchronously. When the piston 200 moves to the extreme position, the wedge block 240 on the piston 200 contacts the vertical surface 232 of the adjacent tooth 230, and the ring sleeve 220 stops rotating. The locking rod on the ring sleeve 220 is located in the slide groove, and the locking rod releases the restriction of the elastic member 270.

[0031] In a further embodiment, the present invention has multiple locking rods, for example, three, the three locking rods are at different heights on the ring sleeve 220 and the three locking rods are evenly distributed in the circumferential direction of the ring sleeve 220, and three sliding grooves are also provided on the inner wall of the injection cylinder 100, and the distribution of the three sliding grooves is as follows: Figure 3 As shown, when multiple locking rods are provided, each rotation of the ring sleeve 220 can unlock a locking rod, and the unlocking is performed sequentially from top to bottom. Each time a locking rod is unlocked, the force is increased once. Multiple unlockings gradually increase the pushing force of the elastic member 270 on the piston 200. Gradually pressurizing the injection of the repair glue can allow the repair glue to fully diffuse in the crack, fill all gaps and small cracks, avoid the formation of cavities or bubbles, and thus enhance the density of the crack and the overall repair effect.

[0032] For ease of description, Figure 3 and Figure 4As shown, the three locking rods are named as the first locking rod 300, the second locking rod 310 and the third locking rod 320 from top to bottom, and the three sliding grooves are named as the first sliding groove 150, the second sliding groove 160 and the third sliding groove 170 from top to bottom. The first sliding groove 150 corresponds to the first locking rod 300, the second sliding groove 160 corresponds to the second locking rod 310, and the third sliding groove 170 corresponds to the third locking rod 320. The first locking rod 300 releases the first restriction of the elastic member 270, thereby increasing the force of the elastic member 270 pushing the piston 200. The force of the piston 200 squeezing the repair glue in the injection cylinder 100 for the second time is greater than the force of the piston 200 squeezing the repair glue in the injection cylinder 100 for the first time. After the piston 200 has completed the second squeezing, the glue injection machine 400 injects glue into the glue injection cylinder 100 for the third time. The piston 200 moves toward the glue injection port 110 to compress the elastic member 270. The wedge block 240 on the piston 200 pushes the ring sleeve 220 to rotate for the third time. At this time, the first locking rod 300 is still in the first slide groove 150, and the second locking rod 310 on the ring sleeve 220 enters the second slide groove 160, so that the second locking rod 310 releases the secondary restriction of the elastic member 270. The force of the elastic member 270 pushing the piston 200 increases, and the force of the piston 200 squeezing the repair glue in the glue injection cylinder 100 for the third time is greater than the force of the piston 200 squeezing the repair glue in the glue injection cylinder 100 for the second time.

[0033] After the piston 200 has completed the third squeezing, the glue injection machine 400 injects glue into the glue injection cylinder 100 for the fourth time, and the piston 200 moves toward the glue injection port 110 to compress the elastic member 270. The wedge block 240 on the piston 200 pushes the ring sleeve 220 to rotate for the fourth time. At this time, the first locking rod 300 and the second locking rod 310 are respectively located in the first slide groove 150 and the second slide groove 160, and the third locking rod 320 on the ring sleeve 220 enters the third slide groove 170, so that the third locking rod 320 releases the third-level restriction of the elastic member 270. The force of the elastic member 270 pushing the piston 200 increases, and the force of the piston 200 squeezing the repair glue in the glue injection cylinder 100 for the fourth time is greater than the force of the piston 200 squeezing the repair glue in the glue injection cylinder 100 for the third time.

[0034] It should be noted that a plurality of locking rods are provided on the outer periphery of the ring sleeve 220, and a plurality of sliding grooves are opened on the inner wall of the glue injection cylinder 100 so that the elastic member 270 can push the piston 200 with greater force each time than the previous time, thereby gradually increasing the thrust of the piston 200 on the repair glue, so that the repair glue can penetrate into the crack as completely as possible, and gradually increasing the pressure to fill can ensure that the glue in the crack is densely and evenly distributed without leaving any gaps, thereby avoiding subsequent repair quality problems caused by uneven flow of the repair glue and improving the strength after repair.

[0035] In a further embodiment, the following structure is adopted to enable the piston 200 to push the ring sleeve 220 to rotate multiple times. The specific structure is as follows: a triangular block 260 is provided on one end of the piston 200 near the injection port 130, such as Figure 4 and Figure 5 As shown, a gear ring 250 is fixedly provided on one end of the injection cylinder 100 near the injection port 130. The gear ring 250 has small teeth 251. The small teeth 251 have the same structure as the teeth 230 on the ring sleeve 220, and also have an inclined surface 231 and a vertical surface 232, but are in opposite directions and are smaller in size. When the piston 200 squeezes out all the repair glue in the injection cylinder 100, the triangular block 260 on the piston 200 will slide in contact with the small teeth 251, and the small teeth 251 on the gear ring 250 push the piston 200 to rotate, and the direction of rotation of the piston 200 is the same as the direction of rotation of the ring sleeve 220.

[0036] Specific as Figure 4 As shown, when the piston 200 pushes the ring 220, the wedge block 240 on the piston 200 pushes the ring 220 clockwise (in Figure 4 When the piston 200 squeezes out all the repair glue in the injection cylinder 100, the triangular block 260 on the piston 200 contacts the gear ring 250, and the gear ring 250 pushes the piston 200 to rotate clockwise a little, so that when the piston 200 pushes the ring 220 again, the wedge block 240 on the piston 200 can slide into the wedge surface 340 on the adjacent tooth 230. When the piston 200 continues to push, it can push the ring 220 to continue to rotate clockwise, thereby unlocking the next locking rod.

[0037] In a further embodiment, a check valve 121 is provided inside the glue filling tube 120 , and the check valve 121 can only allow the repair glue to enter the glue filling cylinder, but cannot allow the repair glue to flow out of the glue filling cylinder through the glue filling tube 120 .

[0038] In a further embodiment, a connecting plate 140 is provided on the glue injection port 130, and a hole connected to the glue injection port 130 is opened on the connecting plate 140. When the glue injection cylinder 100 needs to inject glue, other positions of the crack are first sealed, leaving an opening on the crack, and the connecting plate 140 is fixed on the opening, so that the glue injection port 130 is connected to the opening on the crack. The connecting plate 140 plays a fixing role, which can enable the repair glue in the glue injection cylinder 100 to completely enter the crack, thereby preventing the repair glue from leaking.

[0039] The specific working process of the maintenance and reinforcement equipment for bridge beams and slabs provided by the present invention is described in combination with the above embodiments: Install: The crack is first processed, the surface of the crack is sealed and only one opening is left, and the connecting plate 140 is fixed on the opening of the crack so that the glue injection port 130 is connected to the opening of the crack.

[0040] The glue injection cylinder 100 injects glue into the crack for the first time: After the position of the ring sleeve 220 is adjusted, the glue injection machine 400 injects glue into the glue injection tube 120, and the repair glue enters the glue injection cylinder 100 through the glue injection tube 120 and the through hole 201 on the piston 200. Since the repair glue enters the cavity between the piston 200 and the glue injection port 130, and the glue injection speed of the glue injection machine 400 is fast, a small part of the repair glue is injected into the crack from the glue injection port 130, and a large amount of repair glue pushes the piston 200 to move toward the glue injection port 110, thereby compressing the elastic member 270. The wedge block 240 on the piston 200 slides in contact with the inclined surface 231 of the tooth 230 on the ring sleeve 220. The piston 200 pushes the ring sleeve 220 to rotate clockwise for the first time, so that the three locking rods are not located in the three slide grooves. When the elastic member 270 is compressed, the elastic member 270 is elastic. A portion of the elastic member 270 located in the ring sleeve 220 is locked by the first locking rod 300, the second locking rod 310 and the third locking rod 320, that is, the three locking rods are inserted into the compressed elastic member 270 to limit the elastic member 270 in the ring sleeve 220 from resetting. When the repair glue in the glue injection barrel 100 is completely filled, the elastic member 270 begins to reset, thereby pushing the piston 200 to move toward the glue injection port 130. The piston 200 pushes the repair glue in the glue injection barrel 100 so that the repair glue gradually squeezes into the crack. When the piston 200 moves to the glue injection port 130, the triangular block 260 on the piston 200 slides into contact with the teeth 230 of the gear ring 250. The gear ring 250 pushes the piston 200 to rotate clockwise, and the repair glue in the glue injection barrel 100 is squeezed out.

[0041] The glue injection cylinder 100 injects glue into the crack for the second time: If the crack can still be filled with repair glue, the glue injection machine 400 injects glue into the glue injection cylinder 100 for the second time. The repair glue in the glue injection cylinder 100 pushes the piston 200 to move in the direction close to the glue filling port 110 to compress the elastic member 270 for the second time. The wedge block 240 on the piston 200 slides in contact with the inclined surface 231 of the tooth 230 on the ring sleeve 220. The piston 200 pushes the ring sleeve 220 to rotate clockwise for the second time. The wedge block 240 stops rotating after contacting the vertical surface 232 of the tooth 230. During this process, the ring sleeve 220 drives the first locking rod 300, the second locking rod 310 and the third locking rod 320 to rotate synchronously. Only the first locking rod 300 rotates to the position of the first slide groove 150, thereby The first locking rod 300 enters the first sliding groove 150 under the action of the compression spring 330, and the other end of the first locking rod 300 pulls out the elastic member 270, which releases the first-level restriction of the elastic member 270. The force of the elastic member 270 pushing the piston 200 increases. After the injection cylinder 100 is filled with the repair glue, the elastic member 270 pushes the piston 200 to squeeze the repair glue. The force of the piston 200 pushing the repair glue for the second time is greater than the force of the piston 200 pushing the repair glue for the first time. When the piston 200 moves to the injection port 130, the triangular block 260 on the piston 200 slides into contact with the teeth 230 of the gear ring 250. The gear ring 250 pushes the piston 200 to rotate clockwise, and the repair glue in the injection cylinder 100 is squeezed out.

[0042] The glue injection cylinder 100 injects glue into the crack for the third time: If the crack can still be filled with repair glue, the glue injection machine 400 injects glue into the glue injection cylinder 100 for the third time. The repair glue in the glue injection cylinder 100 pushes the piston 200 to move in the direction close to the glue filling port 110 to compress the elastic member 270 for the third time. The wedge block 240 on the piston 200 slides in contact with the inclined surface 231 of the tooth 230 on the ring sleeve 220. The piston 200 pushes the ring sleeve 220 to rotate for the third time. The wedge block 240 contacts the vertical surface 232 of the tooth 230 and stops rotating. During this process, the ring sleeve 220 drives the first locking rod 300, the second locking rod 310 and the third locking rod 320 to rotate synchronously. The first locking rod 300 is still in the first slide groove 150, and the third locking rod 320 has not rotated to the position of the third slide groove 170. Only the second locking rod 300 is in contact with the third slide groove 170. When the second locking rod 310 is rotated to the position of the second slide groove 160, the second locking rod 310 enters the second slide groove 160 under the action of the compression spring 330. The other end of the second locking rod 310 pulls out the elastic member 270, which releases the secondary restriction of the elastic member 270. The force of the elastic member 270 pushing the piston 200 increases. After the injection cylinder 100 is filled with the repair glue, the elastic member 270 pushes the piston 200 to squeeze the repair glue. The force of the piston 200 pushing the repair glue for the third time is greater than the force of the piston 200 pushing the repair glue for the second time. When the piston 200 moves to the injection port 130, the triangular block 260 on the piston 200 slides into contact with the teeth 230 of the gear ring 250. The gear ring 250 pushes the piston 200 to rotate clockwise, and the repair glue in the injection cylinder 100 is squeezed out.

[0043] The glue injection cylinder 100 injects glue into the crack for the fourth time: If the crack can still be filled with repair glue, the glue injection machine 400 injects glue into the glue injection cylinder 100 for the fourth time. The repair glue in the glue injection cylinder 100 pushes the piston 200 to move in the direction close to the glue filling port 110 to compress the elastic member 270 for the fourth time. The wedge block 240 on the piston 200 slides in contact with the inclined surface 231 of the tooth 230 on the ring sleeve 220. The piston 200 pushes the ring sleeve 220 to rotate for the fourth time. The wedge block 240 stops rotating after contacting the vertical surface 232 of the tooth 230. During this process, the ring sleeve 220 drives the first locking rod 300, the second locking rod 310 and the third locking rod 320 to rotate synchronously. The first locking rod 300 and the second locking rod 310 are still in the first slide groove 150 and the second slide groove 160. The third locking rod 320 rotates When the third locking rod 320 is in the closed position, the third locking rod 320 moves to the position of the third sliding groove 170, so that the third locking rod 320 enters the third sliding groove 170 under the action of the compression spring 330, and the other end of the third locking rod 320 pulls out the elastic member 270, which releases the third-level restriction of the elastic member 270. The force of the elastic member 270 pushing the piston 200 increases. After the injection cylinder 100 is filled with the repair glue, the elastic member 270 pushes the piston 200 to squeeze the repair glue. The force of the piston 200 pushing the repair glue for the fourth time is greater than the force of the piston 200 pushing the repair glue for the third time. When the piston 200 moves to the injection port 130, the triangular block 260 on the piston 200 slides into contact with the teeth 230 of the gear ring 250. The gear ring 250 pushes the piston 200 to rotate clockwise, and the repair glue in the injection cylinder 100 is squeezed out.

[0044] Filling completed: When the crack is completely penetrated by the repair glue, wait for the repair glue to solidify to complete the maintenance and repair of the crack.

[0045] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A maintenance and reinforcement device for bridge beams and slabs, characterized in that: include: A glue injection cylinder, wherein the two ends of the glue injection cylinder are respectively provided with a glue injection port and a glue filling port, and the glue injection cylinder is provided with a grouting pipe along the axial direction, the grouting pipe is inserted into the grouting port, and the repair glue enters the glue injection cylinder through the grouting pipe; A piston is slidably disposed in the glue injection cylinder and is capable of sliding along the axial direction of the glue injection cylinder; an elastic member, wherein the elastic member is located between the piston and the glue injection port, and when the grouting pipe fills the glue injection cylinder with repair glue liquid, the repair glue liquid can push the piston to move to compress the elastic member, and when the grouting pipe stops filling the glue injection cylinder with repair glue liquid, the elastic member can push the piston to move in the opposite direction to squeeze out the repair glue liquid in the glue injection cylinder; An adjusting component is provided, wherein the adjusting component can adjust the force with which the elastic member pushes the piston. When the piston compresses the elastic member multiple times, the adjusting component gradually increases the force with which the elastic member pushes the piston.

2. The maintenance and reinforcement equipment for bridge beams and slabs according to claim 1, characterized in that: The adjustment assembly includes a rotating plate and a locking rod, wherein the rotating plate is located between the elastic member and the glue injection port, a ring sleeve is fixedly provided on the rotating plate, the ring sleeve is located on the outer periphery of the elastic member, and the locking rod is slidably provided on the side wall of the ring sleeve, and the locking rod can be extended and retracted along the radial direction of the ring sleeve to lock or release the compressed elastic member; In the initial state, the locking rod is extended to lock the compressed elastic member, and the piston is able to push the ring sleeve to rotate after moving a preset distance toward the glue injection port, and the locking rod is shortened to release the compressed elastic member.

3. The maintenance and reinforcement equipment for bridge beams and slabs according to claim 2, characterized in that: A sliding groove is provided on the inner wall of the glue injection cylinder at a position corresponding to the locking rod, and the sliding groove extends along the circumference of the glue injection cylinder. A compression spring is provided on one end of the locking rod away from the elastic member. In the initial state, the locking rod is not in the sliding groove. The locking rod compresses the compression spring and extends radially along the ring sleeve. When the ring sleeve rotates, the locking rod is driven into the sliding groove, and the compression spring pushes the locking rod to shorten radially along the ring sleeve.

4. The maintenance and reinforcement equipment for bridge beams and slabs according to claim 3, characterized in that: One end of the locking rod close to the elastic member has a wedge-shaped surface. When the elastic member is compressed, the outer periphery of the elastic member slides in contact with the wedge-shaped surface so that the locking rod is inserted into the elastic member.

5. The maintenance and reinforcement equipment for bridge beams and slabs according to claim 3, characterized in that: The ring sleeve has a circle of teeth on one end close to the piston, each tooth has an inclined surface and a vertical surface, and the inclined surfaces and vertical surfaces of adjacent teeth are connected. A wedge block is provided on one end of the piston close to the ring sleeve. After the piston moves a preset distance toward the glue filling port, the wedge block slides in contact with the inclined surface of the teeth, and the piston continues to move to push the ring sleeve to rotate. When the wedge block contacts the vertical surface of the adjacent teeth, the ring sleeve stops rotating and the locking rod enters the slide groove.

6. The maintenance and reinforcement equipment for bridge beams and slabs according to claim 5, characterized in that: The ring sleeve is provided with multiple locking rods, the heights of the multiple locking rods gradually decrease and the circumferences are evenly distributed on the side wall of the ring sleeve, and multiple sliding grooves are correspondingly provided on the inner wall of the injection cylinder. The multiple locking rods perform multi-level restrictions on the elastic member. Each time the ring sleeve rotates, a locking rod is unlocked, and the unlocking order is from top to bottom.

7. The maintenance and reinforcement equipment for bridge beams and slabs according to claim 6, characterized in that: A triangular block is provided on one end of the piston close to the injection port, and a gear ring is fixedly provided on one end of the injection cylinder close to the injection port. When the piston moves toward the injection port and the triangular block is in sliding contact with the teeth of the gear ring, the piston continues to move so that the teeth push the piston to rotate, and the rotation direction of the piston is the same as the rotation direction of the ring sleeve.

8. The maintenance and reinforcement equipment for bridge beams and slabs according to claim 6, characterized in that: There are at least three locking rods.

9. The maintenance and reinforcement equipment for bridge beams and slabs according to claim 1, characterized in that: A check valve is provided in the glue filling pipe.

10. The maintenance and reinforcement equipment for bridge beams and slabs according to claim 1, characterized in that: The glue injection port is provided with a connecting disk, and the connecting disk can fix the glue injection port on the crack.

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