Expansion joint dust removal device and dust removal method thereof

Abstract

The invention relates to the technical field of expansion joints, in particular to an expansion joint dust removal device and a dust removal method thereof. According to the technical scheme, the dust removal device comprises a folding part, the folding part comprises a stretching-in plate, a butt joint rod, first folding plates, a clamping assembly, a folding frame and a dust removal assembly, the inner wall of the stretching-in plate is connected with the butt joint rod in an up-down sliding mode, and the bottom of the butt joint rod is rotationally connected with the two symmetrically-arranged first folding plates. According to the device, the stretching-in plate and the butt-joint rod automatically descend due to gravity to adapt to the depth of the expansion joint, the first folding plate at the bottom of the butt-joint rod is unfolded under the downward pressing effect of the gravity of the butt-joint rod, when a brush at the bottom of the first folding plate moves to the limiting position, the first folding plate cannot be unfolded, and the stretching-in plate and the butt-joint rod move relatively; the clamping assembly clamps the folding frame, the guide plate and the second folding plate move, the second folding plate is matched with the distance of the expansion joints, and the expansion joints are completely cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of expansion joints, and in particular to an expansion joint dust removal device and a dust removal method thereof. Background Art

[0002] Expansion joints are structural joints on buildings. When the temperature is high, expansion joints can provide a certain amount of expansion space for the building to avoid excessive stress and deformation of the building structure due to temperature changes. Expansion joints can make the building independent in sections to a certain extent, reduce the transmission of vibration energy, and reduce the degree of damage to the building caused by vibration. Expansion joints are often set between two bridges to avoid the expansion of two adjacent bridges and squeeze each other, preventing cracks, damage or even collapse of the bridges.

[0003] The patent document with publication number CN110725249A discloses a bridge cleaning engineering vehicle and implementation method. The bottom of the iron bar first contacts the dirt in the expansion joint of the bridge. The iron bar kicks the dirt out of the expansion joint of the bridge through repeated rotation, especially stones and other debris that are difficult to clean manually. Then, as the cleaning roller moves forward, it comes into contact with the expansion joint of the bridge. The cleaning roller extends and rotates to repeatedly brush the expansion joint of the bridge to bring out fine dust particles from the expansion joint of the bridge. Then, the water washing component sprays high-pressure water jets on the cleaned area to perform the final cleaning step.

[0004] However, the expansion joint of the bridge is long, and this type of bridge cleaning engineering vehicle needs to measure the depth of the expansion joint to adjust the lowering height of the cleaning roller. The time consumed before dusting the expansion joint is measured, which affects the dust removal efficiency of the expansion joint. Summary of the invention

[0005] The purpose of the present invention is to propose an expansion joint dust removal device and a dust removal method thereof in view of the problem in the background technology that the depth of the expansion joint needs to be measured and then the cleaning height is controlled, which affects the dust removal efficiency.

[0006] In one aspect, the present application provides an expansion joint dust removal device, comprising: A dust removal vehicle is located on a bridge and moves thereon, wherein a water tank is fixedly mounted on the top of the dust removal vehicle, a universal wheel is rotatably connected to the bottom of the dust removal vehicle, and a positioning member is arranged inside the dust removal vehicle; A folding member, the folding member comprises an insertion plate, a docking rod, a first folding plate, a clamping assembly, a folding frame and a dust removal assembly, the inner wall of the insertion plate slides up and down to connect the docking rod, the bottom of the docking rod is rotatably connected to two first folding plates that are symmetrically arranged, the inside of the insertion plate and the rod body of the docking rod are provided with a clamping assembly, the folding frame is located in the middle position of the clamping assembly, and the two ends of the folding frame are respectively fixedly connected to the insertion plate and the dust removal assembly; The docking rod and dust removal assembly enter the expansion joint of the bridge, the alignment part includes a turntable and an electric push rod, the internal rotation of the dust removal vehicle is connected to the turntable, the electric push rod slides up and down at the protruding part of the turntable, the bottom of the electric push rod is fixedly installed with a bottom plate under the bending plate, and the bottom of the electric push rod is fixedly connected to the extension plate through the bending plate.

[0007] Optionally, the two first folding plates form an eight-shape, and a triangular block is fixedly installed at the bottom of the docking rod and between the two first folding plates. The first folding plate is abutted against the triangular block and forms an angle with the bottom surface of the docking rod.

[0008] Optionally, the clamping assembly includes a stop plate, a clamping plate, a return spring, a baffle plate and a strong magnet, two symmetrically arranged strong magnets are fixedly installed inside the extension plate, the interior of the extension plate is slidably connected to the clamping plate, and clamping plates are arranged on the side opposite to the two strong magnets, the inner wall of the extension plate is rotatably connected to the baffle plate located between the clamping plate and the strong magnet, and a return spring is elastically connected between the clamping plate and the extension plate.

[0009] Optionally, the bottom of the shielding plate contacts the abutment plate, a first guide rod is fixedly installed inside the extending plate, the clamping plate slides up and down at the rod body of the first guide rod, and the folding frame is located between the two clamping plates.

[0010] Optionally, the dust removal assembly includes a guide plate and a second folding plate, the bottom of the guide plate is rotatably connected to the second folding plate, a plurality of second folding plates are provided, and are equidistantly distributed in a straight line along the bottom of the guide plate, and the inclination angles of two adjacent second folding plates are opposite. The end of the folding frame is fixedly connected to the guide plate, the inclination angle and length of the second folding plate are the same as the inclination angle and length of the first folding plate, and the bottom ends of the first folding plate and the second folding plate are rotatably connected to a brush, and the brush is in contact with the expansion joint.

[0011] Optionally, the positioning member also includes a lifting plate, a second guide rod, a telescopic rod and a ball bearing, the second guide rod is fixedly installed on the top of the lifting plate, the second guide rod passes through the turntable and is slidably connected to the turntable, the limit plate is fixedly installed on the top of the second guide rod, the telescopic rod is fixedly installed on the bottom of the guide plate and close to the end position, the bottom of the telescopic rod is rollingly connected to the ball bearing, and the ball bearing rolls on the bridge.

[0012] Optionally, a contact switch is fixedly installed inside the telescopic rod at the bottom end of the docking rod, a motor is fixedly installed inside the dust removal vehicle and at the bottom center of the turntable, the contact switch is electrically connected to the motor, the telescopic rod includes a fixed tube and an extension rod, the contact switch is fixedly installed inside the fixed tube, and when the extension rod is fully extended, the extension rod contacts the contact switch inside the fixed tube.

[0013] Optionally, a delay component is also included, which includes a water storage pipe, a piston, a push rod, a delay assembly and a nozzle. The water storage pipe is fixedly installed inside the turntable, the inside of the water storage pipe is slidably connected to the piston, the push rod is fixedly installed at the bottom center of the piston, the bottom of the water storage pipe is provided with a delay assembly, the water storage pipe is connected to the nozzle and the water tank through a hose, the nozzle is fixedly installed on the left and right sides of the extension plate, and the push rod is located directly above the lifting plate.

[0014] Optionally, the delay assembly includes an upper push plate, a delay spring, a lower push plate, a support plate and a spring sheet. The delay spring is fixedly installed on the bottom of the upper push plate, the bottom of the delay spring is fixedly installed on the lower push plate, the bottom of the water storage pipe is fixedly installed on the support plate, the spring sheet is fixedly installed inside the support plate, the top center of the upper push plate is fixedly connected to the push rod, and the support plate is located on the moving path of the upper push plate.

[0015] On the other hand, the present application provides an expansion joint dust removal method, which is applied to the above-mentioned expansion joint dust removal device, and the steps are as follows: S1, move the dust removal vehicle to the expansion joint of the bridge, the extension plate enters the expansion joint, when the folding frame is not in the same plane as the expansion joint, the telescopic rod is supported by the bridge and is in a retracted state, at this time, the extension rod of the telescopic rod is separated from the contact switch, and the contact switch rotates the turntable through the motor; S2, when the telescopic rod enters the expansion joint, the bottom of the extension rod of the telescopic rod is unsupported, and due to gravity, the extension rod moves downward and contacts the contact switch, and the motor stops rotating. At this time, the folding frame and the expansion joint are in the same plane; S3, the electric push rod is extended to move the insertion plate downward, and the first folding plate at the bottom of the insertion plate contacts the bottom surface of the expansion joint, and the two first folding plates are squeezed to unfold, and the unfolded first folding plates and the brush are against the expansion joint, and the first folding plates cannot be unfolded any further; S4, as the electric push rod is further extended, since the first folding plate can no longer move, the first folding plate keeps the position of the docking rod unchanged under the support of the expansion joint, the docking rod moves relative to the insertion plate, and the abutment plate at the docking rod body opens the shielding plate. There is no obstruction between the strong magnet and the clamping plate, the strong magnet attracts the clamping plate, and the two clamping plates move toward each other to clamp the folding frame, so that the folding frame is unfolded to make the guide plate and the second folding plate move horizontally left and right along the direction of the expansion joint, and the second folding plate moves along the expansion joint and uses a brush to remove dust from the expansion joint; S5. After dust removal is completed, the electric push rod contracts to pull the insertion plate and the folding frame upward, and the folding frame drives the lifting plate to move upward. The lifting plate squeezes the push rod to make the water in the water storage pipe spray out from the nozzle. After the electric push rod is fully contracted through the delay component, water is sprayed out from the nozzle to prevent the water from spraying onto the brush and making it wet. When cleaning the next expansion joint, the brush is attached to mud due to moisture.

[0016] Compared with the prior art, the present invention has at least one of the following beneficial technical effects: In the present invention, the depth of the expansion joint is adapted to the automatic drop of the insertion plate and the docking rod due to gravity, and the first folding plate at the bottom of the docking rod is unfolded under the downward pressure of the gravity of the docking rod. When the brush at the bottom of the first folding plate moves to the limit position, the first folding plate can no longer be unfolded, and the insertion plate and the docking rod move relative to each other, so that the clamping assembly clamps the folding frame, so that the two second folding plates move horizontally left and right along the direction of the expansion joint. Since the first folding plate and the second folding plate overlap when the top of the docking rod contacts the insertion plate, the second folding plate adapts to the spacing of the expansion joint, so that the expansion joint is completely cleaned, thereby adapting to the width of the expansion joint, allowing the brush to unfold and cover the width of the expansion joint, and then unfolding the second folding plate left and right and moving along the expansion joint, thereby adapting to expansion joints of different depths and widths.

[0017] Furthermore, when the insertion plate enters the expansion joint and the telescopic rod is on the bridge, the guide plate is rotated by rotating the turntable according to the principle that two points determine a straight line. When the telescopic rod enters the expansion joint, the guide plate and the expansion joint are in the same plane. Under the action of gravity, the insertion plate and the guide plate move the bending plate along the extended part of the electric push rod, so that the guide plate completely enters the expansion joint, thereby realizing automatic adjustment of the guide plate angle so that the unfolding direction of the folding frame is the same as the direction of the expansion joint.

[0018] Furthermore, the lifting plate is moved up to squeeze the push plate and the delay spring, and the delay spring plays a delay role. Water is sprayed when the folding part and the positioning part move upward to the extreme position to prevent the water from contacting the brush and making it wet. When the next expansion joint is dusted, dust adheres to it. At the same time, the delay spring accumulates force to increase the water pressure of the water sprayed from the nozzle, thereby improving the dust removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of an embodiment of the present invention is provided; Figure 2 It is a schematic diagram of the folding frame structure; Figure 3 is a schematic diagram of the splint structure; Figure 4 for Figure 3 An enlarged schematic diagram of the abutment structure of part A; Figure 5 is a schematic diagram of the structure of the first folding plate; Figure 6 It is a schematic diagram of the shielding plate structure viewed from above; Figure 7 It is a schematic diagram of the main cross-sectional view of the dust removal vehicle structure; Figure 8 It is a schematic diagram of the main cross-sectional view of the water storage pipe structure; Fig. 9 Schematic diagram of the bent plate structure.

[0020] 1. Dust removal vehicle; 2. Water tank; 3. Universal wheel; 4. Folding part; 41. Insertion plate; 42. Docking rod; 43. First folding plate; 44. Brush; 45. Butt plate; 46. First guide rod; 47. Clamp; 48. Return spring; 49. Shielding plate; 410. Strong magnet; 411. Folding frame; 412. Guide plate; 413. Second folding plate; 5. Alignment part; 51. Turntable; 52. Electric push rod; 53. Bending plate; 54. Lifting plate; 55. Second guide rod; 56. Telescopic rod; 57. Ball; 58. Bottom plate; 6. Delay part; 61. Water storage pipe; 62. Piston; 63. Push rod; 64. Upper push plate; 65. Delay spring; 66. Lower push plate; 67. Support plate; 68. Spring sheet; 69. Spray nozzle. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0023] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Embodiment 1, this embodiment proposes a dust removal device for expansion joints, such as Figure 1 As shown, the dust removal vehicle 1 moves on the bridge, a water tank 2 is fixedly installed on the top of the dust removal vehicle 1, a universal wheel 3 is rotatably connected to the bottom of the dust removal vehicle 1, and a positioning member 5 is arranged inside the dust removal vehicle 1. The dust removal vehicle 1 moves to the expansion joint of the bridge by moving the universal wheel 3 on the bridge.

[0027] like Figure 1-Figure 4 As shown, the present embodiment further includes a folding member 4, which includes an extending plate 41, a docking rod 42, a first folding plate 43, a clamping assembly, a folding frame 411 and a dust removal assembly, as shown in FIG. Figure 2 and Fig. 9 As shown, the positioning member 5 includes a turntable 51 and an electric push rod 52. The internal rotation of the dust removal vehicle 1 is connected to the turntable 51. The electric push rod 52 slides up and down at the protruding part of the turntable 51. A bottom plate 58 is fixedly installed at the bottom of the electric push rod 52 and below the bending plate 53. The bottom of the electric push rod 52 is fixedly connected to the insertion plate 41 through the bending plate 53. The inner wall of the insertion plate 41 slides up and down to connect the docking rod 42. The docking rod 42 and the dust removal assembly enter the expansion joint of the bridge.

[0028] The bottom of the docking rod 42 is rotatably connected to two symmetrically arranged first folding plates 43, the two first folding plates 43 form an eight-shaped shape, a triangular block is fixedly installed at the bottom of the docking rod 42 and located between the two first folding plates 43, the first folding plate 43 is abutted against the triangular block and forms an angle with the bottom surface of the docking rod 42. A clamping assembly is arranged inside the extension plate 41 and located at the rod body of the docking rod 42, the folding frame 411 is located in the middle of the clamping assembly, and the two ends of the folding frame 411 are respectively fixedly connected to the extension plate 41 and the dust removal assembly.

[0029] like Figure 5As shown, the presence of the triangular block makes the first folding plate 43 in an inclined state. When the docking rod 42 enters the expansion joint and moves downward, the first folding plate 43 contacts the expansion joint. Under the gravity of the docking rod 42, the two first folding plates 43 are unfolded. Since the expansion joint is affected by temperature, the spacing between the expansion joints is not fixed. The first folding plates 43 are used to adapt to the spacing of the expansion joints. When the two first folding plates 43 are unfolded and cannot move, it means that the unfolded distance of the two first folding plates 43 is adapted to the spacing of the expansion joints.

[0030] After the docking rod 42 enters the expansion joint, the bottom of the docking rod 42 is unsupported, the insertion plate 41 and the docking rod 42 move downward, and the bending plate 53 slides downward along the protruding part of the electric push rod 52. When the two first folding plates 43 at the bottom of the docking rod 42 are unfolded and adapted to the expansion joint, the two first folding plates 43 can no longer be unfolded. At this time, the position of the docking rod 42 is fixed, and the insertion plate 41 moves further downward under the action of gravity. The docking rod 42 causes the clamping assembly to clamp the folding frame 411, thereby unfolding the folding frame 411, and the dust removal assembly moves along the expansion joint to clean the stones and dust in the expansion joint.

[0031] The bending plate 53 slides along the electric push rod 52 to make the descending depth of the insertion plate 41 and the dust removal assembly adapt to the height of the expansion joint, and the first folding plate 43 is unfolded to adapt to the spacing of the expansion joint, so that the cleaning range of the dust removal assembly after unfolding is adapted to the spacing of the expansion joints, thereby avoiding the corners of the expansion joints from being unable to be cleaned.

[0032] like Figure 2 and Figure 6 As shown, the clamping assembly includes a resist plate 45, a clamp plate 47, a return spring 48, a shielding plate 49 and a strong magnet 410. Two symmetrically arranged strong magnets 410 are fixedly installed inside the extended plate 41. The internal sliding connection clamp plate 47 of the extended plate 41 is arranged, and the clamp plates 47 are arranged on the opposite sides of the two strong magnets 410. The shielding plate 49 is rotatably connected to the inner wall of the extended plate 41 and is located between the clamp plate 47 and the strong magnet 410. The return spring 48 is elastically connected between the clamp plate 47 and the extended plate 41. The bottom of the shielding plate 49 contacts the resist plate 45. The first guide rod 46 is fixedly installed inside the extended plate 41. The clamp plate 47 slides up and down on the rod body of the first guide rod 46. The folding frame 411 is located between the two clamp plates 47.

[0033] Through the relative movement of the docking rod 42 and the extension plate 41, the docking rod 42 opens the shielding plate 49 through the abutment plate 45 on the rod body, so that there is no obstacle between the strong magnet 410 and the clamping plate 47. The strong magnet 410 uses magnetic force to attract the clamping plate 47, so that the two clamping plates 47 move toward each other, so that the two clamping plates 47 clamp the folding frame 411 to unfold it, so that the folding frame 411 pushes the dust removal assembly to move, and the dust removal assembly moves along the expansion joint to sweep out the dust and stones inside it.

[0034] like Figure 2 As shown, the dust removal assembly includes a guide plate 412 and a second folding plate 413. The bottom of the guide plate 412 is rotatably connected to the second folding plate 413. A plurality of second folding plates 413 are arranged and are equidistantly distributed in a straight line along the bottom of the guide plate 412. The inclination angles of two adjacent second folding plates 413 are opposite. The end of the folding frame 411 is fixedly connected to the guide plate 412. The inclination angle and length of the second folding plate 413 are the same as the inclination angle and length of the first folding plate 43. The bottom ends of the first folding plate 43 and the second folding plate 413 are rotatably connected to a brush 44, and the brush 44 is in contact with the expansion joint.

[0035] When the insertion plate 41 drives the guide plate 412 to move downward, the guide plate 412 squeezes the second folding plate 413 at its bottom, and the second folding plate 413 rotates. The brushes 44 at the bottom of the two adjacent second folding plates 413 move in opposite directions to adapt to the expansion joint spacing. The brushes 44 on the two adjacent second folding plates 413 initially overlap. When the top of the docking rod 42 contacts the insertion plate 41, the first folding plate 43 and the second folding plate 413 overlap.

[0036] In this embodiment, the insertion plate 41 and the docking rod 42 automatically descend due to gravity to adapt to the depth of the expansion joint, and the first folding plate 43 at the bottom of the docking rod 42 is unfolded under the downward pressure of the gravity of the docking rod 42. When the brush 44 at the bottom of the first folding plate 43 moves to the limit position, the first folding plate 43 can no longer be unfolded, so that the folding plate 413 is adapted to the width of the expansion joint after being unfolded, and the insertion plate 41 and the docking rod 42 move relative to each other, and the docking rod 42 uses the abutment plate 45 to open the shielding plate 49, and under the action of the strong magnet 410, the clamping plate 47 moves to clamp the folding frame 411, so that the guide plate 412 and the second folding plate 413 move. Since the first folding plate 43 and the second folding plate 413 overlap when the top of the docking rod 42 contacts the insertion plate 41, the second folding plate 413 adapts to the spacing of the expansion joint, so that the expansion joint is completely cleaned, and then the folding frame 411 is extended left and right to move the second folding plate 413 and the brush 44 along the expansion joint.

[0037] Example 2, based on Example 1, this example proposes a dust removal device for expansion joints, such as Figure 7 As shown, the positioning member 5 also includes a lifting plate 54, a second guide rod 55, a telescopic rod 56 and a ball 57. The second guide rod 55 is fixedly installed on the top of the lifting plate 54, and the second guide rod 55 passes through the turntable 51 and is slidably connected to the turntable 51. A limiting plate is fixedly installed on the top of the second guide rod 55, and the telescopic rod 56 is fixedly installed on the bottom of the guide plate 412 and near the end position. The bottom of the telescopic rod 56 is rollingly connected to the ball 57, and the ball 57 rolls on the bridge.

[0038] The ball bearing 57 and the telescopic rod 56 support the guide plate 412 , and the height of the folding member 4 and the lifting plate 54 are adjusted by lifting and lowering the electric push rod 52 .

[0039] like Figure 2 As shown, a contact switch is fixedly installed inside the telescopic rod 56 at the bottom end of the docking rod 42, and a motor is fixedly installed inside the dust removal vehicle 1 and at the bottom center of the turntable 51. The contact switch is electrically connected to the motor. The telescopic rod 56 includes a fixed tube and an extension rod. The contact switch is fixedly installed inside the fixed tube. When the extension rod is fully extended, the extension rod contacts the contact switch in the fixed tube.

[0040] Since the extension plate 41 has entered the expansion joint, the turntable 51 is driven to rotate by the motor. When the telescopic rod 56 enters the expansion joint, the guide plate 412 and the expansion joint are in the same plane. The extension rod of the telescopic rod 56 moves downward under the action of gravity and contacts the contact switch, and the contact switch turns off the motor.

[0041] In this embodiment, when the insertion plate 41 enters the expansion joint and the telescopic rod 56 is on the bridge, the guide plate 412 is rotated by rotating the turntable 51 according to the principle that two points determine a straight line. When the telescopic rod 56 enters the expansion joint, the guide plate 412 and the expansion joint are in the same plane. Under the action of gravity, the insertion plate 41 and the guide plate 412 move the bending plate 53 along the extended part of the electric push rod 52, so that the guide plate 412 completely enters the expansion joint, thereby realizing automatic adjustment of the angle of the guide plate 412, so that the unfolding direction of the folding frame 411 is the same as the direction of the expansion joint.

[0042] Embodiment 3, based on the above-mentioned embodiment 1 or embodiment 2, this embodiment proposes a dust removal device for expansion joints, such as Figure 1 and Figure 8 As shown, a delay component 6 is provided at the bottom of the dust removal vehicle 1 and above the lifting plate 54. The delay component 6 includes a water storage pipe 61, a piston 62, a push rod 63, a delay assembly and a nozzle 69. The water storage pipe 61 is fixedly installed inside the turntable 51. The inside of the water storage pipe 61 is slidably connected to the piston 62. The push rod 63 is fixedly installed at the bottom center of the piston 62. A delay assembly is provided at the bottom of the water storage pipe 61. The water storage pipe 61 is connected to the nozzle 69 and the water tank 2 through a hose. The nozzle 69 is fixedly installed on the left and right sides of the extension plate 41. The push rod 63 is located directly above the lifting plate 54.

[0043] The bending plate 53 is pulled up by the bottom plate 58 through the contraction of the electric push rod 52, so that the insertion plate 41 and the lifting plate 54 are moved upward, and the folding part 4 and the alignment part 5 are pulled upward to prevent the folding part 4 and the alignment part 5 from contacting the bridge, so as to shift the position of the dust removal vehicle 1, and the push rod 63 is pushed upward by the lifting plate 54, and the push rod 63 pushes the piston 62 to spray the water in the water storage pipe 61 and the water tank 2 from the nozzle 69 to flush the expansion joint.

[0044] like Figure 8 As shown, the delay assembly includes an upper push plate 64, a delay spring 65, a lower push plate 66, a support plate 67 and a spring sheet 68. The delay spring 65 is fixedly installed on the bottom of the upper push plate 64, the lower push plate 66 is fixedly installed on the bottom of the delay spring 65, the support plate 67 is fixedly installed on the bottom of the water storage pipe 61, and the spring sheet 68 is fixedly installed inside the support plate 67. The top center of the upper push plate 64 is fixedly connected to the push rod 63, and the support plate 67 is located on the moving path of the upper push plate 64.

[0045] The movement of the upper push plate 64 is hindered by the spring sheet 68, and the lifting plate 54 moves upward to squeeze the lower push plate 66. The lower push plate 66 and the upper push plate 64 compress the push rod 63. When the electric push rod 52 is fully retracted, that is, the folding part 4 and the alignment part 5 move upward to the extreme position, the resistance of the spring sheet 68 to the upper push plate 64 is less than the elastic force of the delay spring 65. At this time, the elastic force of the delay spring 65 bounces the upper push plate 64 upward, and the delay spring 65 plays a delay role. Water is sprayed again when the folding part 4 and the alignment part 5 move upward to the extreme position. At the same time, the delay spring 65 accumulates force to increase the water pressure of the water sprayed from the nozzle 69, thereby improving the dust removal effect.

[0046] In this embodiment, the lifting plate 54 is moved upward to squeeze the push plate 66 and the delay spring 65, and the delay spring 65 plays a delay role. When the folding part 4 and the positioning part 5 move upward to the extreme position, water is sprayed again to prevent the water from contacting the brush 44 and making it wet. When the next expansion joint is dusted, dust adheres to it. At the same time, the delay spring 65 accumulates force to increase the water pressure of the water sprayed from the nozzle 69, thereby improving the dust removal effect.

[0047] A method for dust removal of an expansion joint is applied to the above-mentioned dust removal device of an expansion joint, and the steps are as follows: S1, move the dust removal vehicle 1 to the expansion joint of the bridge, extend the plate 41 into the expansion joint, when the folding frame 411 is not in the same plane as the expansion joint, the telescopic rod 56 is supported by the bridge and is in a retracted state, at this time, the telescopic rod 56 extends out and separates from the contact switch, and the contact switch rotates the turntable 51 through the motor; S2, when the telescopic rod 56 enters the expansion joint, the bottom of the extension rod of the telescopic rod 56 is unsupported, and due to gravity, the extension rod moves downward and contacts the contact switch, and the motor stops rotating. At this time, the folding frame 411 and the expansion joint are in the same plane; S3, the electric push rod 52 is extended to move the insertion plate 41 downward, and the first folding plate 43 at the bottom of the insertion plate 41 contacts the bottom surface of the expansion joint, and the two first folding plates 43 are squeezed to unfold, and the unfolded first folding plates 43 and the brush 44 are against the expansion joint, and the first folding plates 43 cannot be unfolded any further; S4, as the electric push rod 52 is further extended, since the first folding plate 43 can no longer move, the first folding plate 43 keeps the position of the docking rod 42 unchanged under the support of the expansion joint, and the docking rod 42 moves relative to the insertion plate 41, and the abutment plate 45 at the rod body of the docking rod 42 opens the shielding plate 49, and there is no obstacle between the strong magnet 410 and the clamping plate 47. The strong magnet 410 attracts the clamping plate 47, and the two clamping plates 47 move toward each other to clamp the folding frame 411, so that the folding frame 411 is unfolded to make the guide plate 412 and the second folding plate 413 move horizontally left and right along the direction of the expansion joint, and the second folding plate 413 moves along the expansion joint and uses the brush 44 to remove dust from the expansion joint; S5. After dust removal is completed, the electric push rod 52 contracts to pull the insertion plate 41 and the folding frame 411 upward, and the folding frame 411 drives the lifting plate 54 to move upward. The lifting plate 54 squeezes the push rod 63, so that the water in the water storage pipe 61 is sprayed out from the nozzle 69. After the electric push rod 52 is completely contracted by the delay component, water is sprayed out from the nozzle 69 again to prevent the water from spraying onto the brush 44 and making it wet. When cleaning the next expansion joint, the brush 44 is attached to mud due to moisture.

[0048] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An expansion joint dust removal device, characterized in that: include: A dust removal vehicle (1) is located and moves on a bridge, a water tank (2) is fixedly mounted on the top of the dust removal vehicle (1), a universal wheel (3) is rotatably connected to the bottom of the dust removal vehicle (1), and a positioning member (5) is arranged inside the dust removal vehicle (1); A folding member (4), the folding member (4) comprising an insertion plate (41), a docking rod (42), a first folding plate (43), a clamping assembly, a folding frame (411) and a dust removal assembly, the inner wall of the insertion plate (41) being slidably connected to the docking rod (42) up and down, the bottom of the docking rod (42) being rotatably connected to two symmetrically arranged first folding plates (43), the clamping assembly being arranged inside the insertion plate (41) and at the rod body of the docking rod (42), the folding frame (411) being located in the middle of the clamping assembly, and the two ends of the folding frame (411) being fixedly connected to the insertion plate (41) and the dust removal assembly respectively; The docking rod (42) and the dust removal assembly enter the expansion joint of the bridge. The alignment member (5) includes a turntable (51) and an electric push rod (52). The dust removal vehicle (1) is internally rotatably connected to the turntable (51). The electric push rod (52) slides up and down at the extended portion of the turntable (51). A bottom plate (58) is fixedly installed at the bottom of the electric push rod (52) and below the bending plate (53). The bottom of the electric push rod (52) is fixedly connected to the extension plate (41) via the bending plate (53).

2. The dust removal device for expansion joints according to claim 1, characterized in that: The two first folding plates (43) form an eight-shaped shape, a triangular block is fixedly installed at the bottom of the docking rod (42) and between the two first folding plates (43), and the first folding plate (43) is abutted against the triangular block and forms an angle with the bottom surface of the docking rod (42).

3. The dust removal device for expansion joints according to claim 2, characterized in that: The clamping assembly comprises a stop plate (45), a clamping plate (47), a return spring (48), a shielding plate (49) and a strong magnet (410); two symmetrically arranged strong magnets (410) are fixedly installed inside the insertion plate (41); the insertion plate (41) is slidably connected to the clamping plate (47) inside, and the clamping plates (47) are arranged on the opposite sides of the two strong magnets (410); the inner wall of the insertion plate (41) is rotatably connected to the shielding plate (49) between the clamping plate (47) and the strong magnet (410); and the return spring (48) is elastically connected between the clamping plate (47) and the insertion plate (41).

4. The dust removal device for expansion joints according to claim 3, characterized in that: The bottom of the shielding plate (49) contacts the abutment plate (45), a first guide rod (46) is fixedly installed inside the extension plate (41), the clamping plate (47) slides up and down on the rod body of the first guide rod (46), and the folding frame (411) is located between the two clamping plates (47).

5. The dust removal device for expansion joints according to claim 4, characterized in that: The dust removal assembly comprises a guide plate (412) and a second folding plate (413); the bottom of the guide plate (412) is rotatably connected to the second folding plate (413); a plurality of second folding plates (413) are provided and are equidistantly distributed in a straight line along the bottom of the guide plate (412); two adjacent second folding plates (413) have opposite inclination angles; an end of the folding frame (411) is fixedly connected to the guide plate (412); the inclination angle and length of the second folding plate (413) are the same as the inclination angle and length of the first folding plate (43); the bottom ends of the first folding plate (43) and the second folding plate (413) are rotatably connected to brushes (44); the brushes (44) are in contact with the expansion joint.

6. The dust removal device for expansion joints according to claim 5, characterized in that: The alignment member (5) further comprises a lifting plate (54), a second guide rod (55), a telescopic rod (56) and a ball (57); the second guide rod (55) is fixedly mounted on the top of the lifting plate (54); the second guide rod (55) passes through the turntable (51) and is slidably connected to the turntable (51); a limiting plate is fixedly mounted on the top of the second guide rod (55); the telescopic rod (56) is fixedly mounted at the bottom of the guide plate (412) and close to the end position; the bottom of the telescopic rod (56) is rollingly connected to the ball (57); the ball (57) rolls on the bridge.

7. The dust removal device for expansion joints according to claim 6, characterized in that: A telescopic rod (56) is fixedly mounted at the bottom end of the docking rod (42), and a contact switch is fixedly mounted inside the docking rod (42). A motor is fixedly mounted inside the dust removal vehicle (1) and at the bottom center of the turntable (51). The contact switch is electrically connected to the motor. The telescopic rod (56) comprises a fixed cylinder and an extension rod. The contact switch is fixedly mounted inside the fixed cylinder. When the extension rod is fully extended, the extension rod contacts the contact switch inside the fixed cylinder.

8. The dust removal device for expansion joints according to claim 7, characterized in that: The invention also comprises a delay component (6), wherein the delay component (6) comprises a water storage pipe (61), a piston (62), a push rod (63), a delay assembly and a nozzle (69), wherein the water storage pipe (61) is fixedly mounted inside the turntable (51), the interior of the water storage pipe (61) is slidably connected to the piston (62), the push rod (63) is fixedly mounted at the bottom center of the piston (62), the bottom of the water storage pipe (61) is provided with a delay assembly, the water storage pipe (61) is connected to the nozzle (69) and the water tank (2) through a hose, the nozzle (69) is fixedly mounted on the left and right sides of the extension plate (41), and the push rod (63) is located directly above the lifting plate (54).

9. The dust removal device for expansion joints according to claim 8, characterized in that: The delay assembly comprises an upper push plate (64), a delay spring (65), a lower push plate (66), a support plate (67) and a spring sheet (68); the delay spring (65) is fixedly mounted on the bottom of the upper push plate (64); the lower push plate (66) is fixedly mounted on the bottom of the delay spring (65); the support plate (67) is fixedly mounted on the bottom of the water storage pipe (61); the spring sheet (68) is fixedly mounted inside the support plate (67); the top center of the upper push plate (64) is fixedly connected to the push rod (63); and the support plate (67) is located on the moving path of the upper push plate (64).

10. A method for dust removal of expansion joints, applied to the dust removal device of expansion joints as claimed in claim 9, comprising the following steps: S1, moving the dust removal vehicle (1) to the expansion joint of the bridge, the insertion plate (41) entering the expansion joint, when the folding frame (411) is not in the same plane as the expansion joint, the telescopic rod (56) is supported by the bridge and is in a retracted state, at which time the extension rod (56) is separated from the contact switch, and the contact switch rotates the turntable (51) through the motor; S2, when the telescopic rod (56) enters the expansion joint, the bottom of the extension rod of the telescopic rod (56) is unsupported, and due to gravity, the extension rod moves downward and contacts the contact switch, and the motor stops rotating. At this time, the folding frame (411) and the expansion joint are in the same plane; S3, the insertion plate (41) is moved downward by extending the electric push rod (52), the first folding plate (43) at the bottom of the insertion plate (41) contacts the bottom surface of the expansion joint, the two first folding plates (43) are squeezed and move forward and backward to expand, and the expanded first folding plates (43) and the brush (44) are pressed against the expansion joint, and the first folding plates (43) cannot be expanded any further; S4, as the electric push rod (52) is further extended, since the first folding plate (43) can no longer move, the first folding plate (43) keeps the position of the docking rod (42) unchanged under the support of the expansion joint, the docking rod (42) moves relative to the insertion plate (41), the abutment plate (45) at the rod body of the docking rod (42) opens the shielding plate (49), there is no obstruction between the strong magnet (410) and the clamping plate (47), the strong magnet (410) attracts the clamping plate (47), the two clamping plates (47) move towards each other to clamp the folding frame (411), so that the folding frame (411) is unfolded to make the guide plate (412) and the second folding plate (413) move horizontally left and right along the direction of the expansion joint, the second folding plate (413) moves along the expansion joint and uses the brush (44) to remove dust from the expansion joint; S5. After dust removal is completed, the electric push rod (52) is retracted to pull the insertion plate (41) and the folding frame (411) upward, and the folding frame (411) drives the lifting plate (54) to move upward. The lifting plate (54) squeezes the push rod (63) to cause the water in the water storage pipe (61) to be sprayed out from the nozzle (69). After the electric push rod (52) is completely retracted by the delay component, the nozzle (69) sprays water again to prevent the water from spraying onto the brush (44) and making it wet. When cleaning the next expansion joint, the brush (44) is attached with mud due to moisture.

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