Bridge construction cutting device with controllable cutting depth

Abstract

The present invention provides a bridge construction slit device with controllable slit depth, which belongs to the field of bridge construction technology. It includes a slit machine as a whole and a traveling wheel arranged below the slit machine as a whole. It also includes: a slit disk, which cuts the concrete layer through the clockwise rotation of the slit disk when the slit machine as a whole moves along the concrete surface of the bridge. This invention, through this slit design, has a layered design with the slits larger at the top and smaller at the bottom, which can make the slits on the surface of the bridge deck larger, which can meet the large expansion and contraction requirements of the bridge concrete surface, especially the arched bridge deck, when the temperature changes, and avoid problems such as surface cracking and deformation caused by excessive stress when the bridge changes in temperature. At the same time, the bottom slit is narrower, which can effectively reduce the width of the deep slit while meeting the smaller stress changes in the deep layer of the bridge concrete, thereby ensuring the integrity and safety of the bridge and improving the overall service life of the bridge.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, in particular to a bridge construction slit cutting device with controllable slit depth. Background Art

[0002] During bridge construction, after pouring the concrete layer, the bridge deck needs to be cut. The purpose of cutting the bridge deck is to relieve the stress of shrinkage, expansion, deformation and other stresses caused by factors such as temperature changes, humidity changes, and load changes in the bridge deck concrete, and to avoid cracks, deformation and other problems in the bridge deck concrete. Cutting the bridge deck can also divide the bridge deck into several independent blocks, reduce the interaction between the blocks, and improve the bearing capacity and service life of the bridge.

[0003] Prior art publication number CN113529554B discloses an environmentally friendly slitting device for bridge and road construction with controllable slit depth, belonging to the field of road construction technology. The device comprises an installation box, a displacement wheel, an installation frame, a limit frame, and a cutting wheel. The lower surface of the installation box is provided with a displacement wheel, and a hose is connected between the air outlet pipe and the cooling head. The environmentally friendly slitting device for bridge and road construction with controllable slit depth has a rotating ring that can be grasped and rotated, so that the rotating ring can drive the adjustment block to rotate through the adjustment gear when the rotating ring rotates. The adjustment block drives the displacement rod and the installation rod to slide downward through a threaded connection with the displacement rod, thereby changing the depth of the cutting wheel installed at the lower end of the installation rod into the road surface. The adjustment gear can be alternately engaged with the two adjustment blocks or engaged simultaneously when sliding up and down, so that the two cutting wheels can cut into the road surface at different depths, thereby cutting to the desired depth in two steps, ensuring that the edges of the slits are neat and beautiful and not prone to cracking, thereby extending the service life of the road surface.

[0004] However, the existing technology still has certain limitations. The existing technology is aimed at bridge deck cutting, and the overall cutting width is consistent. However, in actual cutting projects, the stress changes caused by the external environment on the entire bridge deck concrete during use are different. The thickness of the bridge concrete layer is generally more than 15 cm. Among them, the temperature of the concrete surface is greatly affected by external influences. The specific value will be affected by many factors, such as the mix ratio of concrete, the type of aggregate used, the strength of concrete, etc. Generally speaking, when the concrete surface is within 5 cm, it is greatly affected by external temperature changes, and the deep concrete layer is affected by heat transfer loss. Problems such as the stress caused by the external environment and stability are smaller, and the expansion and contraction generated are also smaller. However, for the arch bridge deck, since the curved surface area of ​​the arch concrete is larger, it will produce greater strain when subjected to temperature changes. Therefore, the width of the expansion joint needs to be designed with a larger margin. The overall cutting width of the existing technical solution is consistent, which makes it easy for the cutting seam of the arch bridge deck to be too wide and too deep, which will not only weaken the bearing capacity of the bridge deck, but also destroy the integrity of the bridge deck, resulting in a decrease in the bearing capacity of the bridge deck, thereby affecting the safety performance of the bridge, while accelerating the aging of the bridge deck and increasing the noise of vehicles traveling.

[0005] How to invent a bridge construction cutting device with controllable cutting depth to improve these problems has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] In order to make up for the above shortcomings, the present invention provides a bridge construction slit device with controllable slit depth, aiming to improve the problem of the existing technical solution that the bridge deck slit width is consistent, which easily leads to the slit being too wide and affects the overall performance of the bridge.

[0007] The present invention is achieved in that:

[0008] The present invention provides a bridge construction slot cutting device with controllable slot cutting depth, comprising a slot cutting machine as a whole and a traveling wheel arranged below the slot cutting machine as a whole, and further comprising:

[0009] The cutting disc, when the cutting machine moves along the concrete surface of the bridge, cuts the concrete layer by rotating the cutting disc clockwise. After the cutting is completed, the inner wall of the cutting part can be polished by rotating the cutting disc counterclockwise, and the cutting part can be automatically filled.

[0010] The adjustable cutting strip is set on the side wall of the cutting disk. When cutting the concrete bridge deck, it can cooperate with the cutting disk to cut the bridge deck together, and the cutting depth of the bridge can be adjusted by adjusting the distance that the adjustable cutting strip extends outside the cutting disk.

[0011] Preferably, a water tank, a hydraulic pump and a stuffing pump are fixedly installed inside the whole slitting machine, a slitting disc is rotatably connected to the inside of the whole slitting machine through a bearing, a driving motor whose output shaft is fixedly connected to the center of the slitting disc is also fixedly installed inside the whole slitting machine, two groups of arc-shaped collecting grooves are symmetrically arranged along the slitting disc inside the whole slitting machine, a fixed feeding ring and a fixed connecting pipe are fixedly installed inside the whole slitting machine, and the fixed feeding ring and the fixed connecting pipe are kept in rotation connection with the slitting disc through a sealed bearing, the hydraulic pump and the stuffing pump are respectively provided with a hydraulic oil delivery pipe and a stuffing delivery pipe connected to the fixed connecting pipe and the inside of the fixed feeding ring, A sealed hydraulic chamber is provided inside, and the internal limit seal of the sealed hydraulic chamber is elastically and slidably connected with an adjustable slitting strip, and the side walls of the adjustable slitting strip and the slitting disk are both provided with grinding rollers, and a connecting pipeline is provided inside the grinding roller, and a feed hose connected to the inside of the slitting disk and the connecting pipeline is provided inside the sealed hydraulic chamber, and the internal limit seal of the adjustable slitting strip is slidably connected with a connecting slider, and the connecting slider and the interior of the adjustable slitting strip are elastically connected by a spring, and a limit connecting pipe is provided at the bottom of the connecting slider, and the outer wall of the limit connecting pipe is limit-sealed and movably sleeved with a packing slider, and the limit connecting pipe and the packing slider are elastically connected by a spring.

[0012] Preferably, multiple groups of traveling wheels are symmetrically arranged along the slitting disc, and the number of traveling wheels arranged on any side of the slitting disc is not less than 2 groups.

[0013] Preferably, the side walls of the slitting disc and the adjustable slitting strip away from the center point of the slitting disc are both provided with cutting teeth of a staggered design.

[0014] Preferably, the grinding roller is rotatably connected to the adjustable slitting strip via a rotating shaft, and the side wall of the grinding roller extends slightly to the outside of the adjustable slitting strip, and a ratchet is designed at the connection between the rotating shaft of the grinding roller and the inside of the adjustable slitting strip, and the side wall of the slitting disk is also provided with multiple groups of grinding rollers.

[0015] Preferably, a cavity communicating with the interior of the fixed feed ring is provided at the contact portion between the fixed feed ring and the slitting disc, and the cavity is provided with a pipeline communicating with the feed hose.

[0016] Preferably, a pipeline communicating with the interior of the fixed communicating pipe is provided at the center of the slitting disk, and a pipeline communicating with the interior of the sealed hydraulic chamber is provided between the pipeline at the center of the slitting disk.

[0017] Preferably, the packing slider is L-shaped, and an L-shaped discharge pipeline connected to the limiting connecting pipe is opened inside the packing slider.

[0018] Preferably, the side where the position-limiting connecting pipe and the communicating pipeline are close to each other is staggered, so that when the filler slider is inside the adjustable slit strip, the position-limiting connecting pipe and the communicating pipeline are not in contact.

[0019] Preferably, the fixed feed ring and the fixed connecting pipe extend to different depths inside the slitting disc, so that the pipelines inside the slitting disc connected to the sealed hydraulic chamber and the feed hose are staggered along the axis of the slitting disc.

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

[0021] This slit design is layered, with the slits larger at the top and smaller at the bottom. This allows for larger slits on the surface of the bridge deck, meeting the large expansion and contraction requirements of the bridge concrete surface, especially arched bridge decks, when the temperature changes. This prevents problems such as surface cracking and deformation caused by excessive stress during temperature changes. Furthermore, the bottom slit is narrower, effectively reducing the width of the deep slit while meeting the smaller stress changes in the deep concrete layer of the bridge, thereby ensuring the integrity and safety of the bridge and improving its overall service life.

[0022] After the slitting is completed, the slitting disc and the adjustable slitting strip rotate in opposite directions. The filler slider is extended to allow the polyurethane solution to enter the discharge pipe through the limiting connecting pipe and be discharged, so that the slit is sprayed and backfilled. At the same time, the ratchet design of the grinding roller automatically grinds the inner wall of the concrete after the slit when backfilling the slit, eliminating burrs on the inner wall after the slit, reducing noise during driving, improving driving comfort and safety, and improving the density and stability of the slit backfill, effectively avoiding the formation of cavities during filling, and preventing subsequent dust and water from penetrating into the slit, causing corrosion and aging inside the slit, thereby effectively improving the overall safety and life of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 Schematic diagram of the overall external structure of a bridge construction slitting device with controllable slitting depth provided by an embodiment of the present invention;

[0025] Figure 2 Schematic diagram of the overall internal structure of a bridge construction slitting device with controllable slitting depth provided by an embodiment of the present invention;

[0026] Figure 3 Schematic diagram of the overall internal structure of a bridge construction slitting device with controllable slitting depth provided by an embodiment of the present invention;

[0027] Figure 4Schematic diagram of the overall internal structure of a bridge construction slitting device with controllable slitting depth provided by an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the connection structure between the slitting disc and the drive motor of a bridge construction slitting device with controllable slitting depth provided by an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the overall external structure of a slitting disk of a bridge construction slitting device with controllable slitting depth provided by an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the distribution structure of the pipelines connecting the internal slitting disk of the bridge construction slitting device with controllable slitting depth provided by an embodiment of the present invention to the feed hose;

[0031] Figure 8 This is a schematic diagram of the distribution structure of the pipelines connected to the sealed hydraulic cavity inside the slitting disk of the bridge construction slitting device with controllable slitting depth provided by an embodiment of the present invention;

[0032] Figure 9 Schematic diagram of the internal structure of an adjustable slitting strip of a bridge construction slitting device with controllable slitting depth provided by an embodiment of the present invention;

[0033] Figure 10 This is a schematic structural diagram of a bridge construction slotting device with controllable slotting depth provided by an embodiment of the present invention, with a filler slider extended;

[0034] Figure 11 Schematic diagram of the ratchet structure at the connection between the grinding roller and the slitting disc of a bridge construction slitting device with controllable slitting depth provided by an embodiment of the present invention;

[0035] Figure 12 It is a schematic diagram of the cross-sectional structure of the slitting device for bridge construction with controllable slitting depth provided by an embodiment of the present invention, during and after slitting.

[0036] In the figure: 1. The whole slitting machine; 2. Travel wheel; 3. Slitting disc; 4. Water tank; 5. Hydraulic pump; 6. Filling pump; 11. Drive motor; 12. Arc collecting trough; 31. Adjustable slitting strip; 32. Fixed feeding ring; 33. Fixed connecting pipe; 34. Sealed hydraulic chamber; 51. Hydraulic oil delivery pipe; 61. Filling delivery pipe; 311. Grinding roller; 312. Feed hose; 313. Filling slider; 314. Connecting pipeline; 315. Connecting slider; 316. Limit connecting pipe; 317. Discharge pipeline. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 making creative efforts shall fall within the scope of protection of the present invention.

[0038] Example

[0039] Reference Figure 1-12 The bridge construction seam cutting device with controllable seam cutting depth includes a seam cutting machine 1 and a traveling wheel 2 arranged below the seam cutting machine 1, and further includes:

[0040] The slitting disc 3, when the slitting machine 1 moves along the concrete surface of the bridge, cuts the concrete layer by rotating the slitting disc 3 clockwise. After the slitting is completed, the inner wall of the slitting portion can be polished by rotating the slitting disc 3 counterclockwise, and the slitting portion can be automatically filled.

[0041] The adjustable cutting strip 31 is arranged on the side wall of the cutting disk 3. When cutting the concrete bridge deck, it can cooperate with the cutting disk 3 to cut the bridge deck together, and the cutting depth of the bridge can be adjusted by adjusting the distance that the adjustable cutting strip 31 extends out of the cutting disk 3.

[0042] Reference Figure 1-10The interior of the slitting machine 1 is fixedly equipped with a water tank 4, a hydraulic pump 5 and a stuffing pump 6. The interior of the slitting machine 1 is rotatably connected to the slitting disc 3 through a bearing. The interior of the slitting machine 1 is also fixedly equipped with a drive motor 11 whose output shaft is fixedly connected to the center of the slitting disc 3. The interior of the slitting machine 1 is symmetrically provided with two groups of arc-shaped collecting grooves 12 along the slitting disc 3. The interior of the slitting machine 1 is fixedly equipped with a fixed feed ring 32 and a fixed connecting pipe 33, and the fixed feed ring 32 and the fixed connecting pipe 33 are both rotatably connected to the slitting disc 3 through sealed bearings. The hydraulic pump 5 and the stuffing pump 6 are respectively provided with a hydraulic oil delivery pipe 51 and a stuffing delivery pipe 61 which are connected to the fixed connecting pipe 33 and the interior of the fixed feed ring 32. A sealed hydraulic chamber 3 is provided inside the slitting disc 3. 4. The internal limit seal of the sealed hydraulic chamber 34 is elastically and slidably connected to the adjustable slitting strip 31. The side walls of the adjustable slitting strip 31 and the slitting disc 3 are both provided with grinding rollers 311. A connecting pipe 314 is provided inside the grinding roller 311. A feeding hose 312 is provided inside the sealed hydraulic chamber 34, which is connected to the interior of the slitting disc 3 and the connecting pipe 314. The internal limit seal of the adjustable slitting strip 31 is slidably connected to a connecting slider 315. The connecting slider 315 is elastically connected to the interior of the adjustable slitting strip 31 by a spring. A limit connecting pipe 316 is provided at the bottom of the connecting slider 315. The outer wall of the limit connecting pipe 316 is limit-sealed and movably sleeved with a stuffing slider 313, and the limit connecting pipe 316 and the stuffing slider 313 are elastically connected by a spring.

[0043] Furthermore, multiple groups of traveling wheels 2 are symmetrically arranged along the slitting disc 3, and the number of traveling wheels 2 arranged on any side of the slitting disc 3 is not less than 2 groups;

[0044] It should be noted that when cutting starts from the edge of the bridge concrete surface, multiple sets of traveling wheels 2 are simultaneously in contact with the concrete surface. Through the positioning and support of the traveling wheels 2 at more than two points, when the seam cutter 1 moves forward through the traveling wheels 2, the seam cutter 1 can always move forward in a horizontal direction, avoiding the tilt of the seam cutter 1, which causes the cutting disk 3 to tilt and cause errors in the cutting depth.

[0045] Furthermore, the side walls of the slitting disc 3 and the adjustable slitting strip 31 away from the center point of the slitting disc 3 are both provided with cutting teeth of a staggered design;

[0046] It should be noted that, through the staggered cutting teeth, the concrete surface can be cut and slotted by rotating the cutting disc 3 and the adjustable cutting strip 31 .

[0047] Reference Figure 11The grinding roller 311 is rotatably connected to the adjustable slitting strip 31 via a rotating shaft, and the side wall of the grinding roller 311 slightly extends to the outside of the adjustable slitting strip 31. A ratchet is designed at the connection between the rotating shaft of the grinding roller 311 and the inside of the adjustable slitting strip 31, and the side wall of the slitting disk 3 is also provided with multiple groups of grinding rollers 311;

[0048] It should be noted that when the cutting disc 3 and the adjustable cutting strip 31 rotate clockwise to cut the concrete surface, the grinding roller 311 rotates when in contact with the cutting seam, which can reduce friction and stress. However, when the adjustable cutting strip 31 and the grinding roller 311 rotate in the opposite direction, the grinding roller 311 cannot rotate with the cutting disc 3 and the adjustable cutting strip 31 due to the ratchet design, and the rolling friction is changed to sliding friction, which increases the contact stress, grinds the inner wall of the concrete after the cutting, and eliminates the burrs on the inner wall after the cutting. This not only reduces the noise when the vehicle passes by, improves the driving comfort and safety, but also improves the compactness of the subsequent filling material, avoids the situation where the backfill material cannot fully fill the inside of the cutting seam due to the burrs, and easily forms a filling cavity, which not only affects the density and stability of the cutting seam, but also the burrs affect the adhesion of the inner wall of the cutting seam, reducing the durability and service life of the cutting seam.

[0049] Reference Figure 7 The contact portion between the fixed feed ring 32 and the slitting disk 3 is provided with a cavity communicated with the interior of the fixed feed ring 32 , and the cavity is provided with a pipeline communicated with the feed hose 312 .

[0050] Reference Figure 8 A pipeline communicating with the interior of the fixed communicating pipe 33 is opened at the center of the slitting disk 3 , and a pipeline communicating with the interior of the sealed hydraulic chamber 34 is opened between the pipeline at the center of the slitting disk 3 .

[0051] Furthermore, the packing slider 313 is L-shaped, and an L-shaped discharge pipe 317 connected to the limiting connecting pipe 316 is opened inside the packing slider 313.

[0052] Furthermore, the side where the limiting connecting pipe 316 and the communicating pipe 314 are close to each other is staggered. When the filling slider 313 is inside the adjustable slit strip 31 , the limiting connecting pipe 316 and the communicating pipe 314 are not in contact.

[0053] It should be noted that the fixed feed ring 32 and the fixed connecting pipe 33 extend to different depths inside the slitting disc 3, so the pipelines inside the slitting disc 3 connected to the sealed hydraulic chamber 34 and the feed hose 312 are staggered along the axial direction of the slitting disc 3.

[0054] Working principle of the bridge construction slot cutting device with controllable slot depth:

[0055] The depth of the bridge seam during construction is determined by the type and thickness of the concrete layer on the bridge surface and the overall use environment and load conditions of the bridge. The hydraulic pump 5 is started to deliver the hydraulic oil to the interior of the sealed hydraulic chamber 34 through the hydraulic oil delivery pipe 51 and further through the fixed connecting pipe 33 and the pipeline. The interior of the sealed hydraulic chamber 34 is pressurized so that the adjustable cutting strip 31 moves and extends out of the sealed hydraulic chamber 34. By adjusting the length of the adjustable cutting strip 31 extending out of the cutting disc 3, the bridge seam depth can be freely adjusted. Compared with the prior art, the drive motor 11 and the cutting disc 3 are of a fixed design as a whole, which improves the resistance to vibration generated during the cutting work and ensures the stability of the drive motor 11 and the cutting disc 3 during operation.

[0056] When performing the seam cutting operation on the bridge, first, the seam cutting machine 1 is set at the edge of the bridge deck through the support of multiple sets of traveling wheels 2. Then, at this time, the seam cutting disc 3 and the adjustable seam cutting strip 31 are not in contact with the bridge deck. Then, the seam cutting machine 1 is pushed, and the driving motor 11 and the water tank 4 are started at the same time. The driving motor 11 can drive the seam cutting disc 3 to rotate, and the water tank 4 can cool the cutting part and suppress dust through the water pipe set at the bottom of the seam cutting machine 1. As the seam cutting machine 1 moves forward, the seam cutting disc 3 and the adjustable seam cutting strip 31 rotate. At the same time, it runs towards the bridge deck, and the adjustable cutting strip 31 first contacts the edge of the bridge deck. Through the teeth of the staggered design on the edge of the adjustable cutting strip 31, the concrete bridge deck can be frictionally cut. Further, the cutting disc 3 also contacts the edge of the bridge deck. Through the cutting teeth of the staggered design on the edge of the cutting disc 3, it can frictionally cut with the bridge deck to form a group of cutting seams with a larger cutting width than the adjustable cutting strip 31. As the cutting machine 1 moves along the bridge surface, the adjustable cutting strip 31 and the cutting disc 3 cut the bridge deck to form a group of T-shaped cutting seams. Figure 12 Through this slitting design, the cutting depth of the slitting disc 3 is consistent, which can provide a wider slit for the depth of the concrete surface layer that varies greatly due to the external environment. At the same time, the slit is larger at the top and smaller at the bottom in a layered design, which can make the slit on the bridge deck surface larger, which can meet the expansion and contraction requirements of the bridge concrete surface, especially the arch bridge deck, when the temperature changes, and avoid problems such as surface cracking and deformation caused by excessive stress when the bridge changes in temperature. At the same time, the bottom slit is narrower, which can effectively reduce the width of the slit while meeting the small stress changes in the deep layer of the bridge concrete, thereby ensuring the overall safety of the bridge.

[0057] When cutting the bridge surface, the water tank 4 can spray water to the cutting area to suppress dust and lubricate. At the same time, the debris generated by the rotation of the cutting disc 3 and the adjustable cutting strip 31 during cutting can be thrown into the interior of the arc-shaped collection trough 12 by the centrifugal force generated by the rotation of the adjustable cutting strip 31 and the cutting disc 3 to be collected, thereby preventing dust and impurities from overflowing, reducing pollution to the environment, and achieving green and environmentally friendly construction.

[0058] After the slitting is completed, the slitting machine 1 can be moved in the opposite direction of the slitting, and the drive motor 11 can be controlled to rotate in the opposite direction. The filling pump 6 is started to pump the polyurethane solution for backfilling into the slitting disc 3 through the filling delivery pipe 61. The polyurethane solution passes through the fixed feed ring 32 and the pipeline and enters the connecting pipe 314 through the feed hose 312. Figure 10 When the slitting disc 3 and the adjustable slitting strip 31 rotate in opposite directions, the filler slider 313 extends from the inside of the adjustable slitting strip 31 under the action of inertia, and maintains a connection state with the limit elastic connection with the limit connecting pipe 316. The centrifugal force generated by the rotation of the adjustable slitting strip 31 drives the filler slider 313 and the connecting slider 315 to move, so that the inlet of the limit connecting pipe 316 and the outlet of the connecting pipe 314 are aligned, allowing the polyurethane solution to enter the discharge pipe 317 through the limit connecting pipe 316 and be discharged, thereby spraying and backfilling the slit;

[0059] It should be noted that when the cutting disc 3 and the adjustable cutting strip 31 rotate clockwise to cut the concrete surface, the grinding roller 311 rotates when in contact with the cutting seam, which can reduce friction and stress. However, when the adjustable cutting strip 31 and the grinding roller 311 rotate counterclockwise, the grinding roller 311 cannot rotate with the cutting disc 3 and the adjustable cutting strip 31 due to the design of the ratchet, and the rolling friction is changed to sliding friction, which increases the contact stress, grinds the inner wall of the concrete after the cutting seam, eliminates the burrs on the inner wall after the cutting seam, and reduces the noise when the vehicle passes by, improves the driving comfort and safety, and improves the compactness of the subsequent filling material, avoids the backfill material from being unable to fully fill the inside of the cutting seam due to the burrs, and easily forms a filling cavity, which not only affects the density and stability of the cutting seam, but also The burrs will also affect the adhesion of the inner wall of the cut, reducing the durability and service life of the cut. When the cut disc 3 and the adjustable cut strip 31 rotate in opposite directions, the filler slider 313 is extended to allow the polyurethane solution to enter the discharge pipe 317 through the limiting connecting pipe 316 and be discharged, so that the cut is sprayed and backfilled. At the same time, the ratchet design of the grinding roller 311 automatically grinds the inner wall of the concrete after the cut when backfilling the cut, eliminating burrs on the inner wall after the cut, reducing noise when driving, improving driving comfort and safety, improving the density and stability of the cut backfill, effectively avoiding the formation of cavities during filling, and preventing subsequent dust and water from penetrating into the cut, causing corrosion and aging inside the cut, effectively improving the overall safety and service life of the bridge.

[0060] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0061] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A bridge construction seam cutting device with controllable seam cutting depth, comprising a seam cutting machine as a whole (1) and a traveling wheel (2) arranged below the seam cutting machine as a whole (1), characterized in that: Also includes: The slitting disc (3) is used to cut the concrete layer by rotating the slitting disc (3) clockwise when the slitting machine (1) moves along the concrete surface of the bridge. After the slitting is completed, the inner wall of the slitting portion is polished by rotating the slitting disc (3) counterclockwise, and the slitting portion is automatically filled. The adjustable cutting strip (31) is arranged on the side wall of the cutting plate (3), and cooperates with the cutting plate (3) to cut the bridge deck when cutting the concrete bridge deck, and the cutting depth of the bridge is adjusted by adjusting the distance that the adjustable cutting strip (31) extends outside the cutting plate (3); A water tank (4), a hydraulic pump (5) and a stuffing pump (6) are fixedly installed inside the slitting machine as a whole (1). A slitting disc (3) is rotatably connected inside the slitting machine as a whole (1). A driving motor (11) whose output shaft is fixedly connected to the center of the slitting disc (3) is also fixedly installed inside the slitting machine as a whole (1). Two groups of arc-shaped collecting grooves (12) are symmetrically arranged inside the slitting disc (3). A fixed feed ring (32) and a fixed connecting pipe (33) are fixedly installed inside the slitting machine as a whole (1), and the fixed feed ring (32) and the fixed connecting pipe (33) are both rotatably connected to the slitting disc (3) through sealed bearings. The hydraulic pump (5) and the stuffing pump (6) are respectively provided with a hydraulic oil delivery pipe (51) and a stuffing delivery pipe (61) that are connected to the fixed connecting pipe (33) and the fixed feed ring (32). A sealed hydraulic chamber is provided inside the slitting disc (3). (34), the internal limit seal of the sealed hydraulic chamber (34) is elastically slidably connected to the adjustable slit strip (31), the side walls of the adjustable slit strip (31) and the slit disc (3) are both provided with grinding rollers (311), a connecting pipe (314) is provided inside the grinding roller (311), the interior of the sealed hydraulic chamber (34) is provided with a feed hose (312) connected to the interior of the slit disc (3) and the connecting pipe (314), the internal limit seal of the adjustable slit strip (31) is slidably connected to a connecting slider (315), the connecting slider (315) and the interior of the adjustable slit strip (31) are elastically connected by a spring, a limit connecting pipe (316) is provided at the bottom of the connecting slider (315), the outer wall of the limit connecting pipe (316) is limit-sealed and movably sleeved with a packing slider (313), and the limit connecting pipe (316) and the packing slider (313) are elastically connected by a spring.

2. The bridge construction slit cutting device with controllable slit depth according to claim 1 is characterized in that: The traveling wheels (2) are symmetrically arranged in multiple groups along the slitting disc (3), and the number of traveling wheels (2) arranged on any one side of the slitting disc (3) is not less than two groups.

3. The bridge construction slit cutting device with controllable slit depth according to claim 1 is characterized in that: The side walls of the slitting disc (3) and the adjustable slitting strip (31) away from the center point of the slitting disc (3) are both provided with cutting teeth of a staggered design.

4. The bridge construction slit cutting device with controllable slit depth according to claim 1, characterized in that: The grinding roller (311) is rotatably connected to the adjustable slitting strip (31) via a rotating shaft, and the side wall of the grinding roller (311) slightly extends to the outside of the adjustable slitting strip (31), and a ratchet is designed at the connection between the rotating shaft of the grinding roller (311) and the inside of the adjustable slitting strip (31), and the side wall of the slitting disc (3) is also provided with multiple groups of grinding rollers (311).

5. The bridge construction slit cutting device with controllable slit depth according to claim 1, characterized in that: The contact portion between the fixed feed ring (32) and the slitting disc (3) is provided with a cavity communicating with the interior of the fixed feed ring (32), and the cavity is provided with a pipeline communicating with the feed hose (312).

6. The bridge construction slitting device with controllable slitting depth according to claim 5 is characterized in that: A pipeline communicating with the interior of the fixed connecting pipe (33) is provided at the center of the slitting disc (3), and a pipeline communicating with the interior of the sealed hydraulic chamber (34) is provided between the pipeline at the center of the slitting disc (3).

7. The bridge construction slit cutting device with controllable slit depth according to claim 1, characterized in that: The packing slider (313) is L-shaped, and an L-shaped discharge pipeline (317) connected to the position-limiting connecting pipe (316) is provided inside the packing slider (313).

8. The bridge construction slit cutting device with controllable slit depth according to claim 1, characterized in that: The side where the position-limiting connecting pipe (316) and the connecting pipe (314) are in close contact is staggered, and when the filler slider (313) is located inside the adjustable slit strip (31), the position-limiting connecting pipe (316) and the connecting pipe (314) are not in contact.

9. The bridge construction slitting device with controllable slitting depth according to claim 6, characterized in that: The fixed feed ring (32) and the fixed connecting pipe (33) extend to different depths inside the slitting disc (3), so that the pipelines inside the slitting disc (3) that communicate with the sealed hydraulic chamber (34) and the feed hose (312) are staggered along the axial centerline of the slitting disc (3).

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