A gravel sweeper

Abstract

This utility model belongs to the field of sanitation equipment technology and discloses a gravel sweeper, including a sweeper body and a roller brush. A lifting cylinder is hinged to the adjusting arm and the sweeper body. The lifting cylinder is used to adjust the height of the roller brush, and a locking device is installed on the lifting cylinder. The locking device includes a fixing unit and a limiting unit. The fixing unit includes a baffle installed on the cylinder cover of the lifting cylinder, and the limiting unit includes an adjusting plate installed on the cylinder joint of the lifting cylinder. A locking component is installed on the adjusting plate to limit the return position of the piston rod of the lifting cylinder. The position of the locking component is adapted to the position of the baffle and can be adjusted along the movement direction of the piston rod. This utility model adds a locking device to the lifting cylinder, ensuring the operational safety of the sweeper and preventing damage to equipment parts due to unexpected movement.

Description

Technical Field

[0001] This utility model relates to the field of sanitation equipment technology, and in particular to a gravel sweeper. Background Technology

[0002] A gravel sweeper is a specialized sanitation machine used to sweep solid particulate waste such as gravel, crushed stone, and slag from roads. It mainly includes a chassis system, a sweeping system, a power transmission system, a hydraulic control system, and auxiliary systems. Its core workflow mainly includes preparation, sweeping, collection, storage, and unloading.

[0003] Chinese invention patent application number 202211013094.7 discloses a sweeper and a control method for the sweeper. The sweeper disclosed in the patent includes a roller brush, a roller brush bracket and a lifting cylinder. The lifting cylinder is used to drive the roller brush bracket to move in order to adjust the height of the roller brush to meet the actual road conditions.

[0004] However, the sweeper in this patent still has the following problems: the entire weight of the roller brush is borne by the lifting cylinder. Once the hydraulic system fails, the lifting cylinder will fall rapidly under the action of gravity after losing the support of hydraulic oil, which may cause the roller brush to fall suddenly, causing damage to the cylinder, frame and other components, thus avoiding the occurrence of safety accidents. Utility Model Content

[0005] The main technical problem to be solved by this utility model is to provide a gravel sweeper with a locking device added to the lifting cylinder, which ensures the operational safety of the sweeper and prevents damage to equipment parts due to unexpected movement.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A gravel sweeper includes a sweeper body and a roller brush. The roller brush is movably mounted on the front end of the sweeper body via an adjusting arm. A lifting cylinder is hinged between the adjusting arm and the sweeper body. The lifting cylinder is used to adjust the height of the roller brush. A locking device is installed on the lifting cylinder to control the cylinder's return position. The locking device includes a fixing unit and a limiting unit arranged opposite to each other. The fixing unit includes a baffle installed on the cylinder cover of the lifting cylinder. The limiting unit includes an adjusting plate installed on the cylinder joint of the lifting cylinder. A locking component for limiting the return position of the piston rod of the lifting cylinder is installed on the adjusting plate. The position of the locking component is adapted to the position of the baffle and can be adjusted along the moving direction of the piston rod.

[0007] The following are further optimizations of the above technical solution by this utility model: The baffle is square in shape, with one end covering the outer wall of the cylinder cover and having a semi-circular clearance groove. The size of the clearance groove is adapted to the outer diameter of the guide sleeve of the lifting cylinder, and the inner wall of the clearance groove fits together with the outer diameter of the guide sleeve.

[0008] Further optimization: The end of the baffle with the clearance groove is fixedly installed on the cylinder cover by the first locking member.

[0009] Further optimization: Multiple locking holes are evenly spaced on the outer side of the clearance groove. The locking holes are installed through the baffle plate. The first locking member fixes the baffle plate to the cylinder cover through the locking holes.

[0010] Further optimization: The locking assembly includes a limiting bolt passing through the adjusting plate. The limiting bolt extends along the moving direction of the piston rod and is slidably installed on the adjusting plate. An adjusting nut is threaded onto each end of the limiting bolt. The two adjusting nuts are respectively located on both sides of the adjusting plate, and the end face of the adjusting nut near the adjusting plate is pressed against the side of the adjusting plate.

[0011] Further optimization: Each end of the adjustment plate away from the locking assembly is provided with a clearance hole, which is concentrically set with the shaft hole on the cylinder connector.

[0012] Further optimization: The adjustment plate is L-shaped.

[0013] Further optimization: The long end of the adjusting plate is fixedly installed on the side wall of the cylinder connector by the second locking member, and the short end of the adjusting plate is set parallel to the baffle and is equipped with a locking component.

[0014] The present invention adopts the above technical solution and has the following beneficial effects: 1. The present invention adopts the above-mentioned technical solution, which is ingenious in conception and reasonable in structure. The locking device can not only accurately control the final return position of the piston rod on the lifting cylinder, but also effectively prevent the lifting cylinder from falling unexpectedly and suddenly under load or external force. This measure not only prevents damage to the sweeper body and lifting cylinder due to sudden drop of the lifting cylinder, thus ensuring the operational safety of the sweeper, but also further ensures the operational safety of the sweeper body and core components such as the lifting cylinder.

[0015] 2. The position of the adjusting bolt on the locking device can be freely adjusted according to different models of components such as lifting cylinders and roller brushes, giving the locking device a significant advantage of high adaptability and high versatility. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the lifting cylinder in an embodiment of the present invention; Figure 3 This is a schematic diagram of the baffle structure in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the adjustment plate in an embodiment of this utility model.

[0018] The components include: 1. Sweeper body; 2. Roller brush; 3. Adjusting arm; 4. Lifting cylinder; 401. Cylinder cover; 402. Cylinder connector; 403. Piston rod; 404. Guide sleeve; 5. Baffle; 501. Clearance groove; 502. Locking hole; 6. Adjusting plate; 601. Clearance hole; 7. Locking assembly; 701. Limit bolt; 702. Adjusting nut; 8. First locking component; 9. Second locking component. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1-4 As shown in the figure, a gravel sweeper includes a sweeper body 1 and a roller brush 2, wherein the roller brush 2 is movably mounted on the front end of the sweeper body 1 via an adjusting arm 3.

[0021] In this embodiment, the structure, connection relationship, and working principle of the sweeper body 1, the roller brush 2, and the adjusting arm 3 are all existing technologies and are well known to those skilled in the art, and will not be described in detail here.

[0022] Preferably, the adjusting arm 3 and the sweeper body 1 are hinged together and a lifting cylinder 4 is installed. The lifting cylinder 4 is used to adjust the height of the roller brush 2. A locking device is installed on the lifting cylinder 4 to control the cylinder's return position.

[0023] In this embodiment, the locking device is used to mechanically limit the piston rod 403 of the lifting cylinder 4, which can force the piston rod 403 to fall back to the preset fixed position and prevent it from retracting excessively.

[0024] This design effectively prevents damage to various components of the sweeper due to unexpected movement of the lifting cylinder 4, thus providing a reliable guarantee for the operational safety of the sweeper.

[0025] like Figures 2-4 As shown, the locking device includes a fixing unit and a limiting unit arranged opposite to each other. The fixing unit includes a baffle 5 installed on the cylinder cover 401 of the lifting cylinder 4. The limiting unit includes an adjusting plate 6 installed on the cylinder connector 402 of the lifting cylinder 4. A locking component 7 for limiting the return position of the piston rod 403 of the lifting cylinder 4 is installed on the adjusting plate 6. The position of the locking component 7 is adapted to the position of the baffle 5 and can be adjusted along the moving direction of the piston rod 403.

[0026] In this embodiment, the structure of the lifting cylinder 4, its installation and connection relationship with the sweeper body, and its working principle are all existing technologies and are well known to those skilled in the art, and will not be described in detail here.

[0027] like Figure 2 and Figure 3 As shown, the baffle 5 is square in shape, with one end of the baffle 5 covering the outer wall of the cylinder cover 401, and is provided with a semi-circular relief groove 501. The size of the relief groove 501 is adapted to the outer diameter of the guide sleeve 404 of the lifting cylinder 4, and the inner wall of the relief groove 501 is in close contact with the outer diameter of the guide sleeve 404.

[0028] In this embodiment, the setting of the clearance groove 501 enables the baffle 5 to form a multi-faceted fit with the cylinder cover 401 and the guide sleeve 404, effectively increasing the contact area between the two, thereby significantly improving the reliability and structural stability of the baffle 5 fixed on the cylinder cover 401.

[0029] Preferably, one end of the baffle 5 with the clearance groove 501 is fixedly installed on the cylinder cover 401 by the first locking member 8.

[0030] In this embodiment, the first locking member 8 can be a screw, rivet or buckle, etc., to achieve a detachable fixed connection between the baffle 5 and the cylinder cover 401. Alternatively, the baffle 5 and the cylinder cover 401 can be fixedly connected by welding.

[0031] Preferably, the outer side of the clearance groove 501 is provided with a plurality of locking holes 502 at equal intervals. The locking holes 502 are provided through the baffle 5. The first locking member 8 fixes the baffle 5 to the cylinder cover 401 through the locking holes 502.

[0032] like Figure 2 and Figure 4 As shown, the locking assembly 7 includes a limiting bolt 701 that passes through the adjusting plate 6. The limiting bolt 701 extends along the moving direction of the piston rod 403 and is slidably installed on the adjusting plate 6. An adjusting nut 702 is threaded onto each end of the limiting bolt 701. The two adjusting nuts 702 are respectively located on both sides of the adjusting plate 6, and the end face of the adjusting nut 702 near the adjusting plate 6 is pressed against the side of the adjusting plate 6.

[0033] In this embodiment, the operator can adjust the length of the limit bolt 701 extending out of the adjustment plate 6 by turning the adjusting nut 702 according to actual work needs, thereby enabling the locking device to be adapted to various models of lifting cylinders 4 or roller brushes 2, thus improving the versatility of the locking device.

[0034] Preferably, each end of the adjusting plate 6 away from the locking component 7 is provided with a clearance hole 601, and the clearance hole 601 is concentrically arranged with the shaft hole on the cylinder connector 402.

[0035] In this embodiment, the setting of the clearance hole 601 effectively optimizes the force distribution of the adjustment plate 6, thereby significantly improving the stability of the fixed state of the adjustment plate 6 and the reliability of the connection.

[0036] like Figure 2 As shown, the adjustment plate 6 is L-shaped.

[0037] like Figure 2 and Figure 4 As shown, the long end of the adjusting plate 6 is fixedly installed on the side wall of the cylinder connector 402 by the second locking member 9, and the short end of the adjusting plate 6 is arranged parallel to the baffle 5 and is equipped with a locking component 7.

[0038] In summary, it should be noted that the locking device in this utility model is not limited to the single scenario of road sweepers. It can also be adapted to most application scenarios that require control and locking of the hydraulic cylinder's return position, and has a wide range of applications.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gravel sweeper, comprising a sweeper body (1) and a roller brush (2), wherein the roller brush (2) is movably mounted on the front end of the sweeper body (1) via an adjusting arm (3), characterized in that, The adjusting arm (3) and the sweeper body (1) are hinged together and a lifting cylinder (4) is installed. The lifting cylinder (4) is used to adjust the height of the roller brush (2). A locking device is installed on the lifting cylinder (4) to control the cylinder's return position. The locking device includes a fixing unit and a limiting unit arranged opposite to each other. The fixing unit includes a baffle (5) installed on the cylinder cover (401) of the lifting cylinder (4). The limiting unit includes an adjusting plate (6) installed on the cylinder joint (402) of the lifting cylinder (4). A locking component (7) for limiting the fall position of the piston rod (403) of the lifting cylinder (4) is installed on the adjusting plate (6). The position of the locking component (7) is adapted to the position of the baffle (5) and can be adjusted along the moving direction of the piston rod (403).

2. The gravel sweeper according to claim 1, characterized in that, The baffle (5) is square in shape. One end of the baffle (5) covers the outer wall of the cylinder cover (401) and is provided with a semi-circular relief groove (501). The size of the relief groove (501) is adapted to the outer diameter of the guide sleeve (404) of the lifting cylinder (4). The inner wall of the relief groove (501) fits together with the outer diameter of the guide sleeve (404).

3. A gravel sweeper according to claim 2, characterized in that, The baffle (5) with the clearance groove (501) is fixedly installed on the cylinder cover (401) by the first locking member (8).

4. A gravel sweeper according to claim 3, characterized in that, The outer side of the clearance groove (501) is provided with a plurality of locking holes (502) at equal intervals. The locking holes (502) are provided through the baffle (5). The first locking member (8) fixes the baffle (5) to the cylinder cover (401) through the locking holes (502).

5. A gravel sweeper according to claim 1, characterized in that, The locking assembly (7) includes a limiting bolt (701) that passes through the adjusting plate (6). The limiting bolt (701) extends along the moving direction of the piston rod (403) and is slidably installed on the adjusting plate (6). An adjusting nut (702) is threaded onto each end of the limiting bolt (701). The two adjusting nuts (702) are respectively located on both sides of the adjusting plate (6). The end face of the adjusting nut (702) near the adjusting plate (6) is pressed against the side of the adjusting plate (6).

6. A gravel sweeper according to claim 1, characterized in that, Each end of the adjusting plate (6) away from the locking assembly (7) is provided with a clearance hole (601), and the clearance hole (601) is concentrically set with the shaft hole on the cylinder connector (402).

7. A gravel sweeper according to claim 1, characterized in that, The adjustment plate (6) is L-shaped.

8. A gravel sweeper according to claim 7, characterized in that, The long end of the adjusting plate (6) is fixedly installed on the side wall of the cylinder connector (402) by the second locking member (9), and the short end of the adjusting plate (6) is arranged parallel to the baffle (5) and is equipped with a locking component (7).

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