A sand cleaning device under bridge and culvert and method thereof

Abstract

The application discloses a sand removing device under a bridge and a sand removing method thereof. The device comprises a supporting frame, a sand storage assembly movably arranged on the top of the supporting frame, wheels rotatably arranged on both sides of the supporting frame, a sand conveying assembly arranged on one side of the top of the sand storage assembly, a sand inlet assembly connected to the feeding end of the sand conveying assembly, and a shovel comprising a first horizontal shaft arranged in the inner side of the shovel, the first horizontal shaft being rotatably connected to the shovel, an arc surface arranged on the side of the shovel close to the first horizontal shaft, and a second collecting hopper rotatably arranged on the side of the shovel close to the arc surface. The device can transfer the removed sand and stones, and the first rectangular hole and the sealing plate assembly arranged at the lower part of the sand storage assembly can facilitate the loading or packaging of the sand and stones, and the device can be used in various forms.

Description

Technical Field

[0001] This invention relates to the field of sand removal equipment technology, and in particular to a sand removal device and method for bridges and culverts. Background Technology

[0002] In highway construction, bridges and culverts are built. Sand and gravel accumulate under highway bridges and at the locations of highway culverts. When cleaning these areas using mechanized vehicles, the special location, height limitations, and cleaning distance make it difficult for mechanized vehicles to clean them effectively. To address these issues, a search revealed Chinese Patent No. CN 217517672 U, which discloses a sand cleaner for bridge and culvert areas. This sand cleaner includes a bucket. A first fixed plate and a second fixed plate are symmetrically arranged along the center line of the bucket back. A first rotating rod is arranged between the first fixed plates, and a second rotating rod is arranged between the second fixed plates. A pull rod is rotatably connected to the first rotating rod, and a connecting frame is rotatably connected to the second rotating rod. A first connecting hole is opened on the free end of the pull rod, and a second connecting hole is opened on the connecting frame.

[0003] The aforementioned equipment is large in size and requires the use of specialized equipment, which imposes many limitations. Furthermore, the mixing of sand and gravel of different sizes makes it difficult to recycle and reuse later. Therefore, a sand removal device and method for bridges and culverts is proposed. Summary of the Invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes a sand removal device and method for bridges and culverts.

[0005] The present invention proposes a sand removal device for bridge and culvert areas, including a support frame, a sand storage component that can move up and down is provided on the top of the support frame, wheels are rotatably provided on both sides of the support frame, a sand conveying component is provided on one side of the top of the sand storage component, and a sand feeding component is connected to the inlet end of the sand conveying component.

[0006] The sand feeding assembly includes a bucket, with a first horizontal shaft disposed on the inner side of the bucket. The two ends of the first horizontal shaft extend from the two sides of the bucket and are rotatably connected to the bucket. The bucket has an arc-shaped surface on the side near the first horizontal shaft, and the arc-shaped surface is coaxial with the first horizontal shaft. A second collecting bucket is rotatably disposed on the side of the bucket near the arc-shaped surface. The second collecting bucket has connecting parts on both sides, and the two connecting parts are rotatably connected to the first horizontal shaft. An inclined screening assembly is disposed on the inner side of the bucket. Tracked walkers are disposed on both sides of the second collecting bucket. The arc-shaped surface of the bucket has multiple first strip-shaped perforations connecting to the inner side of the second collecting bucket. A first collecting bucket is disposed on the upper part of the second collecting bucket. A first hydraulic cylinder is hinged to both sides of the first collecting bucket, and the ends of the two first hydraulic cylinders away from the first collecting bucket are rotatably connected to the two sides of the bucket.

[0007] As a further optimization of this technical solution, the present invention provides a sand removal device for bridges and culverts. The first collecting hopper includes a surrounding plate, and a guide hopper is provided at the lower part of the surrounding plate. The guide hopper is fixedly connected to the upper part of the second collecting hopper. A slag discharge port is provided on one side of the lower part of the guide hopper, and a plug is provided inside the slag discharge port. The screening component includes a dividing plate provided on a first horizontal axis, and a second strip-shaped perforation is provided on the dividing plate at equal intervals. An arc-shaped recess is provided on the dividing plate near the lower side of the first horizontal axis.

[0008] In this preferred embodiment, when shoveling sand, large stones will fall into the arc-shaped recess of the dividing plate. When the first hydraulic cylinder drives the bucket to rotate to a certain angle, the large stones collected in the arc-shaped recess will fall into the first collection bucket.

[0009] As a further optimization of this technical solution, the present invention provides a sand removal device for bridges and culverts, wherein the lower part of the dividing plate is provided with fastening bolts, and the fastening bolts are fixedly connected to the inner wall of the bottom of the bucket.

[0010] As a further optimization of this technical solution, the present invention provides a sand removal device for bridges and culverts. The tracked walker includes a support frame, and two tracked wheels are fixed on one side of the support frame. The same track is fitted on the two tracked wheels. One of the tracked wheels is a brushless external rotor roller. A second connecting arm and a first connecting arm are rotatably arranged on the support frame.

[0011] As a further optimization of this technical solution, the present invention provides a sand removal device for bridges and culverts, wherein a rectangular notch is provided on the first connecting arm, and a first hydraulic cylinder is hinged in the rectangular notch. The end of the first hydraulic cylinder away from the first connecting arm is rotatably connected to the side wall of the second collecting hopper. The first connecting arm is rotatably connected to one end of the first horizontal shaft, and the end of the second connecting arm away from the support is rotatably connected to the side wall of the second collecting hopper.

[0012] In this preferred embodiment, the brushless external rotor roller provides power to the tracked walker to drive the track rotation. By controlling the travel speed of the two tracked walkers, straight-line or turning movements can be achieved. By controlling the lifting and lowering of the first hydraulic cylinder, the height of the second collection bucket can be adjusted, thereby adjusting the bucket height. Sand can be shoveled from different heights, allowing passage on different road surfaces.

[0013] As a further optimization of this technical solution, the present invention provides a sand removal device for bridges and culverts. The support frame includes a trapezoidal bracket, with vertically arranged rectangular rods on both inner sides of the trapezoidal bracket. A V-shaped bracket is rotatably arranged on the outer side of the trapezoidal bracket. The V-shaped bracket includes V-shaped side plates rotatably arranged on both sides of the trapezoidal bracket. Two parallel connecting beams are fixed between the two V-shaped side plates, and the two connecting beams are distributed at both ends of the V-shaped side plates. A second horizontal shaft is passed through the trapezoidal bracket, and two wheels are rotatably connected to both ends of the second horizontal shaft. The V-shaped side plates are rotatably connected to the trapezoidal bracket through the second horizontal shaft.

[0014] In this preferred embodiment, the sand storage component above is supported by the rotating V-shaped side plate through the upper connecting beam, while the lower connecting beam contacts the ground to support the support frame and maintain its stability.

[0015] As a further optimization of this technical solution, the present invention provides a sand removal device for bridges and culverts. The sand storage component includes a sand storage hopper. Two parallel rectangular guide sleeves are provided on one side of the sand storage hopper. The two rectangular guide sleeves penetrate the bottom surface of the sand storage hopper, and two rectangular vertical rods are respectively inserted into the two rectangular guide sleeves. The top of the sand storage hopper is an open structure, and a sloping part is provided near the lower part of the rectangular guide sleeves. A first rectangular hole communicating with the outside is provided at the lower part of the sand storage hopper. A sealing plate assembly for sealing the first rectangular hole is provided on the lower inner side of the sand storage hopper. A mounting bracket is provided on one side of the top of the sand storage hopper, and the sand conveying component is fixed on the mounting bracket.

[0016] As a further optimization of this technical solution, the present invention provides a sand removal device for bridges and culverts. The sand storage hopper has a strip-shaped insertion hole connected to its interior on the lower part of the side away from the inclined surface. The sealing plate assembly includes a sealing plate inserted into the strip-shaped insertion hole. A strip-shaped plate is provided on one side of the sealing plate. A rectangular insertion hole is provided on the lower part of the inclined surface. The strip-shaped plate passes through the rectangular insertion hole. A limiting protrusion is provided on the lower part of the strip-shaped plate. A second rectangular hole adapted to the first rectangular hole is provided on the sealing plate. A vertical plate is provided on the top side of the sealing plate away from the strip-shaped plate. Linkage baffles are provided on both sides of the lower part of the sealing plate. A rectangular notch is provided between the linkage baffles and the sealing plate.

[0017] As a further optimization of this technical solution, the present invention provides a sand removal device for bridges and culverts. The sand conveying component includes a metal cylinder fixed on a mounting bracket. A motor is fixed to the top of the metal cylinder. A discharge pipe communicating with the inside of the metal cylinder is provided on the side wall of the metal cylinder near the sand storage hopper. A flexible sand suction pipe communicating with a suction pipe is provided at the bottom of the metal cylinder. The same helical spring is inserted in the flexible sand suction pipe, the metal cylinder, and the suction pipe. The output shaft of the motor passes through the top of the metal cylinder and is fixedly connected to one end of the helical spring.

[0018] A method for using a sand-removing device for bridge underpasses and culverts includes the following steps:

[0019] S1: Equipment transfer. Using wheels and tracked walkways, the device is transferred to the target location such as under a bridge or culvert. During the transfer, the V-shaped support is rotated so that the connecting beam at the top supports the sand storage bucket. The sand storage bucket is then brought into contact with the upper part of the support frame under the action of the rectangular guide sleeve, which lowers the center of gravity of the equipment and reduces the difficulty of the transfer.

[0020] S2: Equipment preparation. According to usage needs, if loading or packaging is required, rotate the V-shaped bracket to make the connecting beam at the top of the V-shaped bracket contact the bottom of the sand storage hopper. At the same time, push the linkage stop bar in the sealing plate assembly to drive the sealing insert plate to slide, so that the second rectangular hole and the first rectangular hole can be aligned. Place the wheel or packaging bag for transferring sand and gravel below the first rectangular hole. If the sand storage assembly is used as a container for storing sand and gravel, rotate the V-shaped bracket so that the upper connecting beam falls into the gap between the inclined part and the rectangular guide sleeve. At the same time, the lower connecting beam rotates and contacts the vertical plate, driving the sealing insert plate to move, thereby covering the first rectangular hole through the sealing insert plate.

[0021] S3: Sand shoveling operation. By controlling the extension and retraction of the first hydraulic cylinder, in conjunction with the first and second connecting arms, the height of the second collecting bucket and the bucket is adjusted. Then, the track walker is controlled to move the bucket, shoveling sand and gravel into the bucket. Then, the second hydraulic cylinder is controlled to drive the bucket to rotate upwards. The second strip-shaped perforation on the screening component screens the sand and gravel. Large pieces of sand and gravel fall into the arc-shaped groove on the screening component, while fine sand enters the second collecting bucket. By controlling the motor to work, the spiral spring is driven to rotate. The fine sand passes through the suction pipe, the flexible sand suction pipe, and the metal cylinder in sequence, and then through the discharge pipe into the sand storage hopper. Then, the second hydraulic cylinder is controlled to continue working, driving the screening component and the bucket to rotate, guiding the large pieces of sand and gravel into the first collecting bucket.

[0022] In summary, the beneficial effects of this invention are as follows:

[0023] The tracked walker, combined with the first hydraulic cylinder, first connecting arm, and second connecting arm, allows for adjustment of the height of the second collecting bucket and the shovel, adapting to different terrains. The second hydraulic cylinder also adjusts the bucket's tilt angle. Combined with the tracked walker's movement, it scoops up sand and gravel. The sand storage and conveying components allow for the transfer of the scooped sand and gravel. The first rectangular hole and sealing plate at the bottom of the sand storage component facilitate loading or packaging of the sand and gravel. The V-shaped bracket allows for height adjustment, changing the usage of the sand storage component. It can function as both a container for storing sand and gravel and a hopper for transferring sand and gravel, offering flexible usage. The screening component, combined with the first collecting bucket, separates large stones from the sand and gravel, preventing blockage of the conveying component. The rotatable dividing plate, with its arc-shaped groove, allows large stones to be deposited into the first collecting bucket for centralized collection and processing. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a sand removal device for bridges and culverts proposed in this invention;

[0025] Figure 2 This is a schematic diagram of the sand storage component, support frame, and sand conveying component of a sand removal device for bridges and culverts proposed in this invention.

[0026] Figure 3 This is a schematic diagram of the sand storage component of a sand removal device for bridges and culverts proposed in this invention;

[0027] Figure 4 This is a schematic diagram of the lower part of the sand storage component of a sand removal device for bridges and culverts proposed in this invention;

[0028] Figure 5 This is a schematic diagram of the sealing plate assembly of a sand-clearing device for bridges and culverts proposed in this invention;

[0029] Figure 6 This is a schematic diagram of the structure of a support frame for a sand removal device under bridges and culverts proposed in this invention;

[0030] Figure 7 This is a schematic diagram of the sand inlet component of a sand removal device for bridges and culverts proposed in this invention;

[0031] Figure 8 This is a schematic diagram of the tracked walker and the second collection bucket of a sand removal device for bridges and culverts proposed in this invention;

[0032] Figure 9 This is a schematic diagram of the structure of the second collection bucket of a sand removal device for bridges and culverts proposed in this invention;

[0033] Figure 10 This is a schematic diagram of the structure of the bucket and the first collection bucket of the sand-clearing device for bridges and culverts proposed in this invention;

[0034] Figure 11 This is a schematic diagram of the structure of a screening component of a sand removal device for bridges and culverts proposed in this invention;

[0035] Figure 12 This is a schematic diagram of the structure of the first collection bucket of a sand removal device for bridges and culverts proposed in this invention;

[0036] Figure 13 This is a schematic diagram of the bucket structure of a sand-clearing device for bridges and culverts proposed in this invention.

[0037] In the diagram: 1. Sand feeding assembly; 101. Bucket; 1011. First strip-shaped perforation; 102. First collecting hopper; 1021. Side plate; 1022. Guide hopper; 103. Tracked walker; 1031. First connecting arm; 1032. First hydraulic cylinder; 1033. Second connecting arm; 104. Second collecting hopper; 1041. Suction pipe; 105. Second hydraulic cylinder; 106. Screening assembly; 1061. First horizontal shaft; 1062. Dividing plate; 10621. Second strip-shaped perforation; 1063. Fastening bolt; 2. Sand storage assembly; 201. Sand storage hopper; 2011. Sloping section; 2012. Rectangular insertion hole; 2013. First rectangular hole 202. Handrail; 203. Rectangular guide sleeve; 204. Sealing plate assembly; 2041. Sealing insert plate; 2042. Vertical plate; 2043. Second rectangular hole; 2044. Linkage stop bar; 20441. Rectangular notch; 2045. Strip plate; 20451. Limiting protrusion; 205. Mounting bracket; 3. Sand conveying assembly; 301. Metal cylinder; 302. Motor; 303. Discharge pipe; 304. Flexible sand suction pipe; 305. Helical spring; 4. Support frame; 401. Rectangular vertical rod; 402. Trapezoidal bracket; 403. Wheel; 404. Second horizontal shaft; 405. V-shaped bracket; 4051. V-shaped side plate; 4052. Connecting beam. Detailed Implementation

[0038] The following will refer to the appendices in the embodiments of the present invention. Figures 1-13 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] Reference Figure 1-13A sand removal device for bridge and culvert areas includes a support frame 4, a sand storage component 2 that can move up and down is provided on the top of the support frame 4, wheels 403 are rotatably provided on both sides of the support frame 4, a sand conveying component 3 is provided on one side of the top of the sand storage component 2, and a sand inlet component 1 is connected to the inlet end of the sand conveying component 3.

[0040] The sand feeding assembly 1 includes a bucket 101. A first horizontal shaft 1061 is provided on the inner side of the bucket 101. The two ends of the first horizontal shaft 1061 extend from the two sides of the bucket 101, and the first horizontal shaft 1061 is rotatably connected to the bucket 101. An arc-shaped part is provided on the side of the bucket 101 near the first horizontal shaft 1061, and the arc-shaped part is coaxial with the first horizontal shaft 1061. A second collecting bucket 104 is rotatably disposed on the side of the bucket 101 near the arc-shaped part. The second collecting bucket 104 has connecting parts on both sides, and the two connecting parts are respectively connected to the first horizontal shaft 1061. 061 Rotary connection, the inner side of the bucket 101 is provided with an inclined screening component 106, the second collection bucket 104 is provided with tracked walkers 103 on both sides, the arc surface of the bucket 101 is provided with a plurality of first strip-shaped perforations 1011 communicating with the inner side of the second collection bucket 104, the upper part of the second collection bucket 104 is provided with a first collection bucket 102, the first collection bucket 102 is hinged to both sides of the first collection bucket 102, and the ends of the two first hydraulic cylinders 1032 away from the first collection bucket 102 are rotatably connected to both sides of the bucket 101.

[0041] See attached document Figure 1 Appendix Figure 7 and attached Figure 10 The first collecting hopper 102 includes a surrounding plate 1021, and a guide hopper 1022 is provided at the lower part of the surrounding plate 1021. The guide hopper 1022 is fixedly connected to the upper part of the second collecting hopper 104. A slag discharge port is provided on one side of the lower part of the guide hopper 1022, and a plug is provided in the slag discharge port. The screening component 106 includes a dividing plate 1062 provided on the first horizontal axis 1061, and the dividing plate 1062 is provided with second strip-shaped perforations 10621 evenly distributed. An arc-shaped recess is provided near the lower side of the first horizontal axis 1061. A fastening bolt 1063 is provided at the lower part of the dividing plate 1062. The fastening bolt 1063 is fixedly connected to the inner wall of the bottom of the bucket 101. When cleaning sand, large stones will fall into the arc-shaped recess of the dividing plate 1062. When the first hydraulic cylinder 1032 is controlled to drive the bucket 101 to rotate to a certain angle, the large stones collected in the arc-shaped recess will fall into the first collection bucket 102.

[0042] See attached document Figure 7 Appendix Figure 8 and attached Figure 9The tracked walker 103 includes a bracket, and two track wheels are fixed on one side of the bracket. The same track is fitted onto the two track wheels, one of which is a brushless external rotor roller. A second connecting arm 1033 and a first connecting arm 1031 are rotatably mounted on the bracket and arranged in parallel. The first connecting arm 1031 has a rectangular notch, and a first hydraulic cylinder 1032 is hinged within the rectangular notch. The end of the first hydraulic cylinder 1032 away from the first connecting arm 1031 is rotatably connected to the side wall of the second collecting hopper 104. One end of the first horizontal shaft 1061 is rotatably connected to the first horizontal shaft 1031. The end of the second connecting arm 1033 away from the support is rotatably connected to the side wall of the second collecting bucket 104. Here, the brushless outer rotor roller provides power to the track walker 103 to drive the track to rotate. By controlling the travel speed of the two track walkers 103, straight line movement or turning can be achieved. By controlling the lifting and lowering of the first hydraulic cylinder 1032, the height of the second collecting bucket 104 can be adjusted, thereby adjusting the height of the bucket 101. Sand can be shoveled from different heights, allowing passage on different road surfaces.

[0043] See attached document Figure 6 The support frame 4 includes a trapezoidal bracket 402, with vertically arranged rectangular vertical bars 401 on both inner sides of the trapezoidal bracket 402. A V-shaped bracket 405 is rotatably arranged on the outer side of the trapezoidal bracket 402. The V-shaped bracket 405 includes V-shaped side plates 4051 rotatably arranged on both sides of the trapezoidal bracket 402. Two parallel connecting beams 4052 are fixed between the two V-shaped side plates 4051, and the two connecting beams 4052 are distributed at both ends of the V-shaped side plates 4051. At this location, a second horizontal shaft 404 is provided through the trapezoidal support 402. The two wheels 403 are rotatably connected to both ends of the second horizontal shaft 404. The V-shaped side plate 4051 is rotatably connected to the trapezoidal support 402 through the second horizontal shaft 404. Here, by rotating the V-shaped side plate 4051, the sand storage component 2 above is supported by the upper connecting beam 4052. At the same time, the lower connecting beam 4052 contacts the ground, which can support the support frame 4 and maintain the stability of the support frame 4.

[0044] See attached document Figure 2 Appendix Figure 3 Appendix Figure 4 and attached Figure 5The sand storage assembly 2 includes a sand storage hopper 201. Two parallel rectangular guide sleeves 203 are provided on one side of the sand storage hopper 201. The two rectangular guide sleeves 203 penetrate the bottom surface of the sand storage hopper 201, and two rectangular vertical rods 401 are respectively inserted into the two rectangular guide sleeves 203. The top of the sand storage hopper 201 is an open structure, and a beveled part 2011 is provided near the lower part of the rectangular guide sleeves 203. A first rectangular hole 2013 communicating with the outside is provided at the lower part of the inner side of the sand storage hopper 201. A sealing plate assembly 204 for sealing the first rectangular hole 2013 is provided at the lower part of the inner side of the sand storage hopper 201. A mounting bracket 205 is provided on one side of the top of the sand storage hopper 201, and the sand conveying assembly 3 is fixed on the mounting bracket 205.

[0045] See attached document Figure 4 and attached Figure 5 The sand storage hopper 201 has a strip-shaped insertion hole at its lower part on the side away from the inclined surface 2011, which communicates with its interior. The sealing plate assembly 204 includes a sealing plate 2041 inserted into the strip-shaped insertion hole. A strip plate 2045 is provided on one side of the sealing plate 2041. A rectangular insertion hole 2012 is provided at the lower part of the inclined surface 2011. The strip plate 2045 passes through the rectangular insertion hole 2012. A limiting protrusion 20451 is provided at the lower part of the strip plate 2045. A second rectangular hole 2043 is provided on the sealing plate 2041, which is adapted to the first rectangular hole 2013. A vertical plate 2042 is provided on the top side of the sealing plate 2041 away from the strip plate 2045. Linkage baffles 2044 are provided on both sides of the lower part of the sealing plate 2041. A rectangular notch 20441 is provided between the linkage baffles 2044 and the sealing plate 2041.

[0046] See attached document Figure 2 and attached Figure 3 The sand conveying assembly 3 includes a metal cylinder 301 fixed on the mounting bracket 205. A motor 302 is fixed to the top of the metal cylinder 301. A discharge pipe 303 communicating with the inside of the metal cylinder 301 is provided on the side wall of the metal cylinder 301 near the sand storage hopper 201. A flexible sand suction pipe 304 communicating with the suction pipe 1041 is provided at the lower part of the metal cylinder 301. The same helical spring 305 is inserted in the flexible sand suction pipe 304, the metal cylinder 301 and the suction pipe 1041. The output shaft of the motor 302 passes through the top of the metal cylinder 301 and is fixedly connected to one end of the helical spring 305.

[0047] A method for using a sand-removing device for bridge underpasses and culverts includes the following steps:

[0048] S1: Equipment transfer. Combined with wheels 403 and tracked walkers 103, the device is transferred to the target bridge or culvert. During the transfer, the V-shaped support 405 is rotated so that the connecting beam 4052 at the top supports the sand storage hopper 201. The sand storage hopper 201 contacts the upper part of the support frame 4 under the action of the rectangular guide sleeve 203, thereby lowering the center of gravity of the equipment and reducing the difficulty of the transfer.

[0049] S2: Equipment preparation. According to usage needs, if loading or packaging is required, rotate the V-shaped bracket 405 so that the connecting beam 4052 on the upper part of the V-shaped bracket 405 contacts the lower part of the sand storage hopper 201. At the same time, push the linkage baffle 2044 in the sealing plate assembly 204 to drive the sealing insert 2041 to slide, so that the second rectangular hole 2043 and the first rectangular hole 2013 can be aligned. Place the wheel or packaging bag for transferring sand and gravel below the first rectangular hole 2013. If the sand storage assembly 2 is used as a container for storing sand and gravel, rotate the V-shaped bracket 405 so that the upper connecting beam 4052 falls into the gap between the inclined part 2011 and the rectangular guide sleeve 203. At the same time, the lower connecting beam 4052 rotates and contacts the vertical plate 2042, driving the sealing insert 2041 to move, thereby covering the first rectangular hole 2013 through the sealing insert 2041.

[0050] S3: Sand shoveling operation. By controlling the extension and retraction of the first hydraulic cylinder 1032, in conjunction with the first connecting arm 1031 and the second connecting arm 1033, the height of the second collecting bucket 104 and the bucket 101 is adjusted. Then, the tracked walker 103 is controlled to work, pushing the bucket 101 to move and shovel sand and gravel into the bucket 101. Then, the second hydraulic cylinder 105 is controlled to drive the bucket 101 to rotate upwards. The second strip-shaped perforation 10621 on the screening component 106 screens the sand and gravel, separating large pieces of sand. Stones fall into the arc-shaped groove on the screening component 106, and fine sand enters the second collection hopper 104. By controlling the motor 302 to work, the spiral spring 305 is rotated. The fine sand passes through the suction pipe 1041, the flexible sand suction pipe 304 and the metal cylinder 301 in sequence, and enters the sand storage hopper 201 through the discharge pipe 303. Then, the second hydraulic cylinder 105 is controlled to work, driving the screening component 106 and the bucket 101 to rotate, and guiding large pieces of sand and gravel into the first collection hopper 102.

[0051] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0052] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0053] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A sand-clearing device for bridge underpasses and culverts, comprising a support frame (4), characterized in that, The support frame (4) is provided with a sand storage component (2) that can move up and down. Both sides of the support frame (4) are provided with wheels (403) that can rotate. A sand conveying component (3) is provided on one side of the top of the sand storage component (2). The inlet end of the sand conveying component (3) is connected to a sand inlet component (1). The sand feeding assembly (1) includes a bucket (101), and a first horizontal shaft (1061) is provided on the inner side of the bucket (101). The two ends of the first horizontal shaft (1061) are respectively protruding from both sides of the bucket (101), and the first horizontal shaft (1061) and the bucket (101) are rotatably connected. The bucket (101) has an arc-shaped surface on the side near the first horizontal shaft (1061), and the arc-shaped surface is coaxial with the first horizontal shaft (1061). A second collecting bucket (104) is rotatably provided on the side of the bucket (101) near the arc-shaped surface. A suction pipe (1041) is provided on the side of the second collecting bucket (104) away from the bucket (101). The second collecting bucket (104) has connecting parts on both sides, and the two connecting parts are rotatably connected to the first horizontal axis (1061). The inner side of the bucket (101) is provided with an inclined screening component (106). The second collecting bucket (104) has tracked walkers (103) on both sides. The arc surface of the bucket (101) is provided with a plurality of first strip-shaped perforations (1011) connecting the inner side of the second collecting bucket (104). The upper part of the second collecting bucket (104) is provided with a first collecting bucket (102). The first collecting bucket (102) is hinged to both sides of the first collecting bucket (102), and the ends of the two second hydraulic cylinders (105) away from the first collecting bucket (102) are rotatably connected to both sides of the bucket (101). The support frame (4) includes a trapezoidal bracket (402). The trapezoidal bracket (402) has vertically arranged rectangular rods (401) on both sides of its inner side. A V-shaped bracket (405) is rotatably arranged on the outer side of the trapezoidal bracket (402). The V-shaped bracket (405) includes V-shaped side plates (4051) rotatably arranged on both sides of the trapezoidal bracket (402). Two parallel connecting beams (4052) are fixed between the two V-shaped side plates (4051). The two connecting beams (4052) are distributed at both ends of the V-shaped side plates (4051). A second horizontal shaft (404) is provided through the trapezoidal bracket (402). Two wheels (403) are rotatably connected to both ends of the second horizontal shaft (404). The V-shaped side plates (4051) are rotatably connected to the trapezoidal bracket (402) through the second horizontal shaft (404).

2. The sand-removing device for bridge underpasses and culverts according to claim 1, characterized in that, The first collecting hopper (102) includes a surrounding plate (1021), and a guide hopper (1022) is provided at the lower part of the surrounding plate (1021). The guide hopper (1022) is fixedly connected to the upper part of the second collecting hopper (104). A slag discharge port is provided on one side of the lower part of the guide hopper (1022), and a plug is provided inside the slag discharge port. The screening component (106) includes a dividing plate (1062) provided on the first horizontal axis (1061), and a second strip-shaped perforation (10621) is provided on the dividing plate (1062) at equal intervals. An arc-shaped recess is provided on the dividing plate (1062) near the lower side of the first horizontal axis (1061).

3. The sand-removing device for bridge underpasses and culverts according to claim 2, characterized in that, The lower part of the dividing plate (1062) is provided with fastening bolts (1063), which are fixedly connected to the inner wall of the bottom of the bucket (101).

4. The sand-removing device for bridge underpasses and culverts according to claim 3, characterized in that, The tracked walker (103) includes a bracket, and two track wheels are fixed on one side of the bracket. The same track is fitted on the two track wheels. One of the track wheels is a brushless external rotor roller. A second connecting arm (1033) and a first connecting arm (1031) are rotatably arranged on the bracket.

5. A sand-removing device for bridge underpasses and culverts according to claim 4, characterized in that, The first connecting arm (1031) is provided with a rectangular notch, and a first hydraulic cylinder (1032) is hinged in the rectangular notch. The end of the first hydraulic cylinder (1032) away from the first connecting arm (1031) is rotatably connected to the side wall of the second collecting hopper (104). The first connecting arm (1031) is rotatably connected to one end of the first horizontal shaft (1061). The end of the second connecting arm (1033) away from the bracket is rotatably connected to the side wall of the second collecting hopper (104).

6. A sand-removing device for bridge underpasses and culverts according to claim 5, characterized in that, The sand storage assembly (2) includes a sand storage hopper (201). Two parallel rectangular guide sleeves (203) are provided on one side of the sand storage hopper (201). The two rectangular guide sleeves (203) penetrate the bottom surface of the sand storage hopper (201), and two rectangular vertical rods (401) are respectively inserted into the two rectangular guide sleeves (203). The top of the sand storage hopper (201) is an open structure, and a sloping part (2011) is provided near the lower part of the rectangular guide sleeves (203) of the sand storage hopper (201). A first rectangular hole (2013) communicating with the outside is provided at the lower part of the sand storage hopper (201). A sealing plate assembly (204) for sealing the first rectangular hole (2013) is provided at the lower part of the inner side of the sand storage hopper (201). An installation bracket (205) is provided on one side of the top of the sand storage hopper (201), and the sand conveying assembly (3) is fixed on the installation bracket (205).

7. A sand-removing device for bridge underpasses and culverts according to claim 6, characterized in that, The sand storage hopper (201) has a strip-shaped insertion hole at its lower part on the side away from the inclined surface (2011). The sealing plate assembly (204) includes a sealing plate (2041) inserted into the strip-shaped insertion hole. A strip plate (2045) is provided on one side of the sealing plate (2041). A rectangular insertion hole (2012) is provided at the lower part of the inclined surface (2011). The strip plate (2045) passes through the rectangular insertion hole (2012). The lower part of the strip plate (2045) is provided with... The sealing plate (2041) has a limit pin (20451), and a second rectangular hole (2043) adapted to the first rectangular hole (2013) is provided on the sealing plate (2041). A vertical plate (2042) is provided on the top side of the sealing plate (2041) away from the strip plate (2045). A linkage baffle (2044) is provided on both sides of the lower part of the sealing plate (2041). A rectangular notch (20441) is provided between the linkage baffle (2044) and the sealing plate (2041).

8. A sand-removing device for bridge underpasses and culverts according to claim 7, characterized in that, The sand conveying assembly (3) includes a metal cylinder (301) fixed on a mounting bracket (205). A motor (302) is fixed on the top of the metal cylinder (301). A discharge pipe (303) communicating with the inside of the metal cylinder (301) is provided on the side wall of the metal cylinder (301) near the sand storage hopper (201). A flexible sand suction pipe (304) communicating with the suction pipe (1041) is provided at the bottom of the metal cylinder (301). The same helical spring (305) is inserted in the flexible sand suction pipe (304), the metal cylinder (301) and the suction pipe (1041). The output shaft of the motor (302) passes through the top of the metal cylinder (301) and is fixedly connected to one end of the helical spring (305).

9. The method of using the sand-clearing device for bridge underpasses and culverts according to claim 8, characterized in that, Includes the following steps: S1: Equipment transfer. Combine the wheels (403) and tracked walker (103) to transfer the device to the target bridge or culvert location. During the transfer, rotate the V-shaped support (405) so that the connecting beam (4052) at the top supports the sand storage bucket (201). Under the action of the rectangular guide sleeve (203), the sand storage bucket (201) contacts the upper part of the support frame (4), lowering the center of gravity of the equipment and reducing the difficulty of transfer. S2: Equipment preparation. If loading or packing is required, rotate the V-shaped bracket (405) to make the connecting beam (4052) on the upper part of the V-shaped bracket (405) contact the lower part of the sand storage hopper (201). Simultaneously, push the linkage baffle (2044) in the sealing plate assembly (204), causing the sealing insert plate (2041) to slide, allowing the second rectangular hole (2043) and the first rectangular hole (2013) to overlap. Place the truck or packaging bag containing the transferred sand and gravel on the truck. Below the first rectangular hole (2013), if the sand storage component (2) is used as a container for storing sand and gravel, the V-shaped bracket (405) is rotated so that the upper connecting beam (4052) falls into the gap between the inclined part (2011) and the rectangular guide sleeve (203), while the lower connecting beam (4052) rotates and contacts the vertical plate (2042), driving the sealing plate (2041) to move, thereby covering the first rectangular hole (2013) through the sealing plate (2041); S3: Sand shoveling operation. By controlling the extension and retraction of the first hydraulic cylinder (1032), in conjunction with the first connecting arm (1031) and the second connecting arm (1033), the height of the second collecting bucket (104) and the bucket (101) is adjusted. Then, the tracked walker (103) is controlled to work, pushing the bucket (101) to move and shove the sand and gravel into the bucket (101). Then, the second hydraulic cylinder (105) is controlled to drive the bucket (101) to rotate upward. The second strip-shaped perforation (10621) on the screening component (106) screens the sand and gravel, and large pieces of sand and gravel fall out. Fine sand enters the second collection hopper (104) through the arc-shaped recess on the screening component (106). By controlling the motor (302) to work, the spiral spring (305) is rotated. The fine sand passes through the suction pipe (1041), the flexible sand suction pipe (304) and the metal cylinder (301) in sequence, and enters the sand storage hopper (201) through the discharge pipe (303). Then, the second hydraulic cylinder (105) is controlled to work, driving the screening component (106) and the bucket (101) to rotate, and guiding the large pieces of sand and gravel into the first collection hopper (102).

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