Road bridge damage repairing device

Abstract

The invention relates to the technical field of highway bridge repair, and discloses a highway bridge damage repair device which comprises a movable base. The material box is arranged on the movable base; the transfer box is arranged below the movable base in a liftable mode through a position adjusting mechanism and a connecting plate, the transfer box communicates with the material box and communicates with a discharging pipe, the discharging end of the discharging pipe is used for stretching into the crack, a wedge-shaped guide block is fixedly connected to the outer side wall of the discharging end of the discharging pipe, a liftable stirring rod is arranged on the transfer box, and the stirring rod is fixedly connected with the discharging end of the discharging pipe. The stirring end of the stirring rod extends out through the discharging end of the discharging pipe; the contact wheel is rotatably arranged on one side of the transfer box, the contact wheel is used for making contact with the road surface, the contact wheel is in transmission connection with a reciprocating lifting mechanism through a transmission mechanism, and the reciprocating lifting mechanism is rotatably connected with the stirring rod; the rotary driving mechanism is arranged on the transfer box and is in transmission connection with the stirring rod, bubbles or pores in a repairing material can be effectively reduced, and the repairing strength is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of highway bridge repair, in particular to a highway bridge damage repair device. Background Art

[0002] Highway bridge engineering includes the main bridge (i.e. bridge superstructure and bridge substructure) engineering and the ancillary engineering facilities in the overall bridge site.

[0003] After long-term use, a large number of cracks or potholes will appear on the surface of highway bridges. If they are not repaired in time, it is easy to cause damage to the highway and bridge structures and cause safety accidents. Therefore, special damage repair equipment is needed to repair the damage on the surface of highway bridges.

[0004] When repairing cracks, it is necessary to clean up the debris around the cracks and then cut grooves in the cracks to expand the crack openings so that the repair materials can penetrate better. However, existing repair devices usually only have the function of filling materials, and there are a large number of bubbles and pores in the filled materials, which can easily affect the strength after curing. Summary of the invention

[0005] The purpose of the present invention is to provide a highway bridge damage repair device, aiming to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above object, the present invention provides the following solution: The present invention provides a highway bridge damage repair device, comprising:

[0007] Mobile base;

[0008] A material box, arranged on the mobile base;

[0009] A transfer box is escalably arranged below the mobile base through a position adjustment mechanism and a connecting plate, the transfer box is connected to the material box, the transfer box is connected to a discharge pipe, the discharge end of the discharge pipe is used to extend into the crack, a wedge-shaped guide block is fixedly connected to the outer side wall of the discharge end of the discharge pipe, and a escalable stirring rod is arranged on the transfer box, and the stirring end of the stirring rod extends through the discharge end of the discharge pipe;

[0010] A contact wheel is rotatably disposed on one side of the transfer box, the contact wheel is used to contact the road surface, the contact wheel is connected to a reciprocating lifting mechanism through a transmission mechanism, and the reciprocating lifting mechanism is rotatably connected to the stirring rod;

[0011] The rotary drive mechanism is arranged on the transfer box, and the rotary drive mechanism is transmission-connected with the stirring rod.

[0012] Optionally, the position adjustment mechanism includes:

[0013] A threaded sleeve, fixedly connected to the moving base;

[0014] A threaded rod, threadedly engaged with the threaded sleeve. A support plate is rotatably connected to the bottom end of the threaded rod, and the support plate is connected to the connecting plate through an elastic mechanism;

[0015] A plurality of first guide rods, fixedly connected to the moving base, passing through the support plate and slidably engaged with the support plate.

[0016] Optionally, the elastic mechanism includes a chute formed in the support plate, a second guide rod fixedly connected in the chute, and a spring fixedly connected between the end of the chute and the connecting plate. The second guide rod passes through the connecting plate and is slidably engaged with the connecting plate.

[0017] Optionally, the transmission mechanism includes:

[0018] A fixed frame, fixedly connected to the connecting plate;

[0019] A bevel gear transmission set, arranged on the fixed frame, with both ends of the bevel gear transmission set respectively drivingly connected to the contact wheel and the reciprocating lifting mechanism.

[0020] Optionally, the reciprocating lifting mechanism includes:

[0021] A reciprocating screw rod, rotatably connected to the transfer box. A reciprocating slider is drivingly engaged on the reciprocating screw rod, and the reciprocating slider is rotatably connected to the stirring rod;

[0022] A plurality of third guide rods, fixedly connected to the transfer box, passing through the reciprocating slider and slidably engaged with the reciprocating slider.

[0023] Optionally, the rotary drive mechanism includes:

[0024] A fixed sleeve, fixedly connected to the transfer box, sleeved on the stirring rod. A spiral groove is formed in the fixed sleeve, and a mating block is slidably engaged in the spiral groove. The mating block is fixedly connected to the stirring rod.

[0025] Optionally, the discharge end of the material box is communicated with the transfer box through a hose.

[0026] Optionally, a power pump is arranged between the hose and the discharge end of the material box.

[0027] Optionally, a plurality of universal wheels and a handle are arranged on the moving base.

[0028] Optionally, the stirring end of the stirring rod is composed of a plurality of stirring blades.

[0029] The present invention discloses the following technical effects: During the movement, the discharge pipe fills the repair material in the material box into the crack. At the same time, the contact wheel rotates, and through the coordinated cooperation of the transmission mechanism, the reciprocating lifting mechanism, and the rotary drive mechanism, the stirring rod forms the effect of lifting and rotating, thereby stirring the repair material discharged from the discharge pipe. And after the material filling is completed, the discharge of the discharge pipe can be stopped, and the repair device can be pushed along the crack for multiple reciprocations to perform multiple stirring operations, thereby effectively reducing the bubbles or pores in the repair material, enhancing the bonding force, making the material better combined with the crack wall, ensuring the uniform mixing of the material, avoiding uneven curing of the material, and effectively improving the repair strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0031] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 is a partial bottom view of the moving base of the present invention;

[0033] Figure 3 is Figure 2 a partial enlarged view of A in

[0034] Figure 4 is a schematic diagram of the structure of the reciprocating lifting mechanism of the present invention;

[0035] Figure 5 is a cross-sectional view of the fixed sleeve of the present invention.

[0036] In the figure: 1, moving base; 2, material box; 3, transfer box; 4, connecting plate; 5, discharge pipe; 6, wedge-shaped guide block; 7, stirring rod; 8, contact wheel; 9, threaded sleeve; 10, threaded rod; 11, support plate; 12, first guide rod; 13, chute; 14, second guide rod; 15, spring; 16, fixed frame; 17, bevel gear transmission group; 171, first bevel gear; 172, first rotating rod; 173, second rotating rod; 174, second bevel gear; 175, third bevel gear; 176, fourth bevel gear; 18, reciprocating screw; 19, reciprocating slider; 20, third guide rod; 21, fixed sleeve; 22, spiral groove; 23, hose; 24, power pump; 25, universal wheel; 26, handle; 27, stirring blade. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] Highway bridges, as the core hubs of modern transportation networks, their structural safety directly affects transportation efficiency and social and economic development. During the long-term service process, bridges are generally affected by factors such as environmental erosion, load fatigue, and material aging, and crack diseases commonly occur. According to the statistical data of the Ministry of Transport in 2022, about 35% of the operating bridges in China have cracks of varying degrees, and the proportion of structural cracks with a width exceeding 0.2mm reaches 12%.

[0038] Structural cracks: Typical forms: Penetrating cracks, diagonal shear cracks. Causes: Overloading, foundation settlement, prestress loss. Danger level: Immediate repair required. Width usually > 0.3mm

[0039] Non-structural cracks: Typical forms: Surface crazing, shrinkage cracks. Causes: Temperature stress, dry shrinkage deformation, construction defects. Treatment principle: For cracks with a width < 0.2mm, surface sealing can be used

[0040] Performance requirements for repair materials: Tensile strength ≥ 8MPa (meeting the JTG / T J22 - 2008 specification), bond strength ≥ 3MPa (matching the concrete matrix), fluidity ≥ 150mm (ensuring dense filling of cracks), curing shrinkage rate < 0.05% (preventing secondary cracking)

[0041] Mainstream types of repair materials: Epoxy resin-based materials, Components: Epoxy resin (Agent A) + curing agent (Agent B), Mixing ratio range: A:B = 2:1 - 4:1 (volume ratio). Advantages: High bond strength (up to 5MPa), chemical corrosion resistance; Polymer-modified cement mortar, Components: 42.5R cement, quartz sand, latex powder (dosage 8% - 12%). Applicable scenarios: Repair of cracks with a width of 0.5 - 5mm; Polyurethane grouting material characteristics: Water swelling rate ≥ 300%, excellent permeability. Construction method: High-pressure injection (pressure 0.5 - 2MPa).

[0042] After curing, the filling materials have high compressive and flexural strengths, can improve the bearing capacity of the repaired area, disperse the load pressure, and avoid secondary cracking caused by local stress concentration. Materials such as grouting materials (such as ultra-high performance fiber concrete, epoxy resin grouting materials) form a dense layer after curing, block the water penetration path, reduce the damage of freeze-thaw and corrosion to the structure, and extend the service life. Some repair mortars or cement-based materials can harden within 2 - 3 hours, shortening the construction period and quickly restoring traffic capacity. Filling materials (such as steel fiber concrete) significantly enhance the impact resistance and fatigue resistance of the repaired area by restricting crack propagation and improving toughness, adapting to heavy traffic environments. The materials are resistant to high and low temperatures and chemical corrosion (such as deicing salts, acids, and alkalis), ensuring stable performance of the repaired area under complex climates.

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] Reference Figures 1-5 The present invention provides a highway bridge damage repair device, comprising:

[0046] Mobile base 1;

[0047] A material box 2 is arranged on the mobile base 1;

[0048] The transfer box 3 is escalably arranged below the mobile base 1 through a position adjustment mechanism and a connecting plate 4. The transfer box 3 is connected to the material box 2. The transfer box 3 is connected to a discharge pipe 5. The discharge end of the discharge pipe 5 is used to extend into the crack. A wedge-shaped guide block 6 is fixedly connected to the outer wall of the discharge end of the discharge pipe 5. The transfer box 3 is provided with an escalable stirring rod 7. The stirring end of the stirring rod 7 extends through the discharge end of the discharge pipe 5.

[0049] The contact wheel 8 is rotatably arranged on one side of the transfer box 3, and is used to contact the road surface. The contact wheel 8 is connected to a reciprocating lifting mechanism through a transmission mechanism, and the reciprocating lifting mechanism is rotatably connected to the stirring rod 7;

[0050] The rotary drive mechanism is arranged on the transfer box 3 , and the rotary drive mechanism is transmission-connected with the stirring rod 7 .

[0051] By operating the position adjustment mechanism, the discharge end of the discharge pipe 5 is inserted into the grooved crack, and the contact wheel 8 is in contact with the ground, pushing the movable base 1 to move along the crack, and the guiding effect of the wedge-shaped guide block 6 makes the discharge pipe 5 move along the direction of the crack. During the movement, the discharge pipe 5 fills the repair material in the material box 2 into the crack. At the same time, the contact wheel 8 rotates through the coordinated cooperation of the transmission mechanism, the reciprocating lifting mechanism and the rotary drive mechanism, so that the stirring rod 7 forms a lifting and rotating effect, thereby stirring the repair material discharged from the discharge pipe 5.

[0052] After the material filling is completed, the discharging of the discharging pipe 5 can be stopped, and the repair device can be pushed along the crack repeatedly for multiple stirring operations, so as to effectively reduce the air bubbles or pores in the repair material, enhance the bonding force, make the material better combined with the crack wall, ensure the uniform mixing of the material, avoid uneven curing of the material, and effectively improve the repair strength.

[0053] In an embodiment of the present invention, the position adjusting mechanism includes:

[0054] A threaded sleeve 9, fixedly connected to the moving base 1;

[0055] A threaded rod 10, in threaded cooperation with the threaded sleeve 9. The bottom end of the threaded rod 10 is rotatably connected to a support plate 11, and the support plate 11 is connected to the connecting plate 4 through an elastic mechanism;

[0056] A plurality of first guide rods 12, fixedly connected to the moving base 1. The first guide rods 12 penetrate through the support plate 11 and are slidably matched with the support plate 11.

[0057] By rotating the threaded rod 10, limited and guided by the plurality of first guide rods 12, the support plate 11 is driven to lift by the threaded cooperation of the threaded sleeve 9 and the threaded rod 10, so as to adjust the height of the transfer box 3, so that the discharging pipe 5 can be inserted into the crack during use. On the contrary, when the repair operation is not carried out, the discharging pipe 5, the stirring rod 7 and the contact wheel 8 are separated from the ground.

[0058] In an embodiment of the present invention, the elastic mechanism includes a chute 13 opened on the support plate 11, a second guide rod 14 fixedly connected in the chute 13, and a spring 15 fixedly connected between the end of the chute 13 and the connecting plate 4. The second guide rod 14 penetrates through the connecting plate 4 and is slidably matched with the connecting plate 4.

[0059] When the wedge-shaped guide block 6 adjusts its position along with the crack trend, it drives the discharging pipe 5, the transfer box 3 and the connecting plate 4 to slide along the chute 13, and guides and supports the connecting plate 4 through the second guide rod 14, and the connecting plate 4 can be kept in an automatic reset state through the spring 15.

[0060] The wedge-shaped guide block 6 is a symmetric triangular structure. The inclined surface of the wedge-shaped guide block 6 contacts the side wall of the crack. By adjusting the inclined surface angle, the external force is decomposed into normal and tangential components of the crack, so as to control the movement direction, adapt to the slight deviation or distortion of the crack, and there is no need to repeatedly adjust the position of the discharging pipe 5, shortening the construction time.

[0061] In an embodiment of the present invention, the transmission mechanism includes:

[0062] A fixed frame 16, fixedly connected to the connecting plate 4. The contact wheel 8 is rotatably connected to the fixed frame 16 through a shaft rod;

[0063] The bevel gear transmission group 17 is arranged on the fixed frame 16, and both ends of the bevel gear transmission group 17 are respectively in transmission connection with the contact wheel 8 and the reciprocating lifting mechanism.

[0064] The bevel gear transmission group 17 includes a first bevel gear 171, a first rotating rod 172 and a second rotating rod 173. Second bevel gears 174 are respectively fixedly connected to both ends of the first rotating rod 172, and third bevel gears 175 are respectively fixedly connected to both ends of the second rotating rod 173. The first rotating rod 172 and the second rotating rod 173 are rotatably connected to the fixed frame 16 through bearing seats. The first bevel gear 171 is fixedly connected to the shaft rod of the contact wheel 8. The first bevel gear 171 meshes with one of the second bevel gears 174, the other second bevel gear 174 meshes with one of the third bevel gears 175, and the other third bevel gear 175 meshes with a fourth bevel gear 176. The fourth bevel gear 176 is fixedly connected to the reciprocating screw 18 in the reciprocating lifting mechanism.

[0065] The contact wheel 8 rotates by contacting the ground, thereby driving the first bevel gear 171 to rotate. Further, the reciprocating screw 18 is rotated by the second bevel gear 174, the first rotating rod 172, the second rotating rod 173, the third bevel gear 175 and the fourth bevel gear 176. The reciprocating screw 18 is driven to rotate by the power of the contact wheel 8, without the need for too many power sources, effectively reducing costs.

[0066] In an embodiment of the present invention, the reciprocating lifting mechanism includes:

[0067] The reciprocating screw 18 is rotatably connected to the transfer box 3. A reciprocating slider 19 is in transmission cooperation with the reciprocating screw 18, and the reciprocating slider 19 is rotatably connected to the stirring rod 7;

[0068] A plurality of third guide rods 20 are fixedly connected to the transfer box 3. The third guide rods 20 penetrate through the reciprocating slider 19 and are in sliding cooperation with the reciprocating slider 19.

[0069] Through the guiding and limiting of the plurality of third guide rods 20 and the rotation of the reciprocating screw 18, the reciprocating thread of the reciprocating screw 18 cooperates with the reciprocating slider 19 to enable the reciprocating slider 19 to form a lifting effect, so that the stirring rod 7 is driven by the reciprocating slider 19 to achieve a lifting effect.

[0070] The reciprocating movement of the reciprocating screw 18 and the reciprocating slider 19 is essentially the combined result of screw transmission + direction control. By switching the rotation direction, adding a linear drive, and special thread design, a periodic linear motion is achieved.

[0071] In an embodiment of the present invention, the rotary drive mechanism includes:

[0072] The fixed sleeve 21 is fixedly connected to the transfer box 3. The fixed sleeve 21 is sleeved on the stirring rod 7. A spiral groove 22 is formed in the fixed sleeve 21. A mating block is slidably fitted in the spiral groove 22, and the mating block is fixedly connected to the stirring rod 7.

[0073] When the stirring rod 7 moves up and down, through the cooperation of the mating block fixedly connected thereto and the spiral groove 22, the mating block slides along the spiral groove, and then the stirring rod 7 is driven by the mating block to achieve a rotating effect, and the rotating and lifting operations of the stirring rod 7 are realized in cooperation with the reciprocating lifting mechanism, effectively improving the stirring effect on the repair material.

[0074] When the mating block on the stirring rod 7 slides along the spiral groove 22, its moving direction is forced to follow the spiral trajectory, causing the stirring rod 7 to rotate.

[0075] In an embodiment of the present invention, the discharge end of the material box 2 is connected to the transfer box 3 through a hose 23.

[0076] By providing the hose 23, the communication state with the material box 2 can still be maintained after the position of the transfer box 3 is changed.

[0077] In an embodiment of the present invention, a power pump 24 is provided between the hose 23 and the discharge end of the material box 2.

[0078] The power pump 24 is used to control the opening and closing state of the material box 2. It is started during filling and repairing so that the repair material can enter the transfer box 3 through the hose 23 and be discharged through the discharge pipe 5 for crack filling, and the discharge of the repair material is stopped during multiple stirrings.

[0079] In an embodiment of the present invention, a plurality of universal wheels 25 and a handle 26 are provided on the moving base 1. The universal wheels 25 and the handle 26 facilitate the operator to push the moving base 1 to move along the crack.

[0080] In an embodiment of the present invention, the stirring end of the stirring rod 7 is composed of a plurality of stirring blades 27. The stirring end composed of the plurality of stirring blades 27 does not occupy too much space and can maintain a good stirring effect in cooperation with rotation and lifting.

[0081] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0082] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A highway bridge damage repair device, characterized in that: include: Mobile base (1); A material box (2) is arranged on the mobile base (1); A transfer box (3) is escalably arranged below the movable base (1) through a position adjustment mechanism and a connecting plate (4); the transfer box (3) is connected to the material box (2); the transfer box (3) is connected to a discharge pipe (5); the discharge end of the discharge pipe (5) is used to extend into the crack; a wedge-shaped guide block (6) is fixedly connected to the outer wall of the discharge end of the discharge pipe (5); a escalable stirring rod (7) is arranged on the transfer box (3); the stirring end of the stirring rod (7) extends out through the discharge end of the discharge pipe (5); A contact wheel (8) is rotatably arranged on one side of the transfer box (3), the contact wheel (8) is used to contact the road surface, the contact wheel (8) is connected to a reciprocating lifting mechanism through a transmission mechanism, and the reciprocating lifting mechanism is rotatably connected to the stirring rod (7); The rotary drive mechanism is arranged on the transfer box (3), and the rotary drive mechanism is transmission-connected to the stirring rod (7).

2. A highway bridge damage repair device according to claim 1, characterized in that: The position adjustment mechanism comprises: A threaded sleeve (9) fixedly connected to the mobile base (1); A threaded rod (10) is threadably matched with the threaded sleeve (9); the bottom end of the threaded rod (10) is rotatably connected to a support plate (11); and the support plate (11) is connected to the connecting plate (4) via an elastic mechanism; A plurality of first guide rods (12) are fixedly connected to the movable base (1); the first guide rods (12) penetrate the support plate (11) and are slidably matched with the support plate (11).

3. A highway bridge damage repair device according to claim 2, characterized in that: The elastic mechanism comprises a slide groove (13) provided on the support plate (11), a second guide rod (14) fixedly connected in the slide groove (13), and a spring (15) fixedly connected between the end of the slide groove (13) and the connecting plate (4), wherein the second guide rod (14) passes through the connecting plate (4) and is slidably engaged with the connecting plate (4).

4. A highway bridge damage repair device according to claim 1, characterized in that: The transmission mechanism comprises: A fixing frame (16) fixedly connected to the connecting plate (4); A bevel gear transmission group (17) is arranged on the fixed frame (16), and two ends of the bevel gear transmission group (17) are respectively connected to the contact wheel (8) and the reciprocating lifting mechanism in a transmission manner.

5. A highway bridge damage repair device according to claim 4, characterized in that: The reciprocating lifting mechanism comprises: A reciprocating screw (18) is rotatably connected to the transfer box (3); a reciprocating slider (19) is provided on the reciprocating screw (18) for transmission, and the reciprocating slider (19) is rotatably connected to the stirring rod (7); A plurality of third guide rods (20) are fixedly connected to the transfer box (3); the third guide rods (20) penetrate the reciprocating slider (19) and are slidably matched with the reciprocating slider (19).

6. A highway bridge damage repair device according to claim 1, characterized in that: The rotary drive mechanism comprises: A fixed sleeve (21) is fixedly connected to the transfer box (3), the fixed sleeve (21) is sleeved on the stirring rod (7), a spiral groove (22) is provided in the fixed sleeve (21), a matching block is slidably matched in the spiral groove (22), and the matching block is fixedly connected to the stirring rod (7).

7. A highway bridge damage repair device according to claim 1, characterized in that: The discharge end of the material box (2) is connected to the transfer box (3) via a hose (23).

8. A highway bridge damage repair device according to claim 7, characterized in that: A power pump (24) is provided between the hose (23) and the discharge end of the material box (2).

9. A highway bridge damage repair device according to claim 1, characterized in that: The mobile base (1) is provided with a plurality of universal wheels (25) and a handle (26).

10. A highway bridge damage repair device according to claim 1, characterized in that: The stirring end of the stirring rod (7) is composed of a plurality of stirring blades (27).

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