A maintenance trolley

Abstract

The application discloses a curing trolley, comprising a trolley frame, a spraying curing system, a water tank, a filtering module and a pumping mechanism. The spraying curing system comprises a curing pipe and a plurality of nozzles. The curing pipe is installed on the upper part of the trolley frame. The water tank is used for storing curing water. The filtering module comprises a filtering box and a plurality of filtering parts. The filtering box comprises a box body and a box cover. The box body has an inner cavity with an open upper end. The box cover is detachably arranged on the upper end of the box body. The box body is provided with a water inlet pipe and a water outlet pipe on opposite sides along a first horizontal direction. The water inlet pipe is connected to the water tank. The plurality of filtering parts are detachably arranged in the box body and are arranged at intervals along the first horizontal direction. The diameters of the filter holes of the filtering parts gradually decrease from the water inlet pipe to the water outlet pipe. The pumping mechanism is connected between the water outlet pipe and the curing pipe and is used for pumping the curing water to the curing pipe. The curing trolley can filter the curing water output by the curing water tank in stages, and the filtering module is convenient to clean.

Description

Technical Field

[0001] This application relates to the field of tunnel trolley technology, and in particular to a maintenance trolley. Background Technology

[0002] In tunnel lining construction, the curing trolley is a key piece of equipment used for spraying and moisturizing the surface of the poured concrete lining. One of the core operating systems of the curing trolley is its upper spraying curing system, which mainly consists of a water tank, a pumping mechanism, and a curing pipe. The pumping mechanism pumps the curing water from the water tank to the curved curing pipe through the pipeline. The shape of the curved curing pipe matches the contour of the tunnel inner wall, and multiple nozzles are spaced along its length to spray the curing water onto the concrete lining surface.

[0003] However, in actual construction, the water tank of the curing trolley is usually filled on-site, inevitably introducing solid impurities such as mud, sand, and gravel into the water. Furthermore, after long-term use, the tank easily accumulates scale, rust, and other particulate matter. These impurities, when introduced into the pumping mechanism and the curved curing pipe along with the curing water, can easily cause wear and even jamming of the pump's internal structure, and can also clog the nozzles on the curved curing pipe. To address this, related technologies typically only install a single filter on the pump inlet side. However, its filtration accuracy is limited, and the filter is prone to clogging and difficult to clean, still failing to guarantee the cleanliness of the curing water and the reliability of the equipment operation. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a maintenance trolley capable of filtering maintenance water output from a maintenance water tank in stages, and with a filter module that is easy to clean.

[0005] The maintenance trolley according to an embodiment of this application includes: Frame; A spray maintenance system includes a maintenance pipe, a water tank, a filter module, and a pumping mechanism. The maintenance pipe is installed on the upper part of the vehicle frame and has multiple spray nozzles. The water tank is used to store maintenance water. The filter module includes a filter box and multiple filter elements. The filter box includes a box body and a box cover. The box body has an inner cavity with an opening at the top. The box cover is detachably installed on the upper end of the box body. An inlet pipe and an outlet pipe are respectively provided on opposite sides of the box body along a first horizontal direction. The inlet pipe is connected to the water tank. The multiple filter elements are detachably installed in the box body and arranged at intervals along the first horizontal direction. From the inlet pipe to the outlet pipe, the diameter of the filter holes of each filter element decreases sequentially. The pumping mechanism is connected between the outlet pipe and the maintenance pipe and is used to pump maintenance water into the maintenance pipe.

[0006] The maintenance trolley according to the embodiments of this application has at least the following beneficial effects: By installing a filter module between the water tank and the pumping mechanism, and arranging multiple filter sections with progressively smaller filter hole diameters along the water flow direction within the filter module, graded filtration of solid impurities in the maintenance water is achieved. This avoids the problem of insufficient filtration precision of a single filter section, as well as the problem of high-precision filter sections clogging too quickly when directly exposed to large particles of impurities. This significantly improves filtration efficiency and precision, ensuring the long-term reliable operation of the spray maintenance system. Furthermore, by separating the filter box into a detachable box body and cover, and detachably housing the filter section within the box, operators can easily open the cover periodically to clean the filter module.

[0007] According to some embodiments of this application, the filter cartridge further includes: A collection basket is placed inside the box and has an inner cavity with an opening at the top. Along the first horizontal direction, the outer walls of opposite sides of the collection basket are respectively attached to the inner walls of opposite sides of the box. Along the first horizontal direction, the opposite sides of the collection basket are respectively provided with a water inlet and a water outlet. The water inlet is aligned and connected to the water inlet pipe, and the water outlet is aligned and connected to the water outlet pipe. Each of the filter sections is disposed within the collection basket, and the collection basket is configured to be removed from the top of the box body after the box lid is opened.

[0008] According to some embodiments of this application, the filtering part includes a frame and a filter screen fixed to the frame. Along a second horizontal direction perpendicular to the first horizontal direction, slots are respectively provided on opposite sides of the collection basket corresponding to the frame. The slots extend vertically and have an opening at the top. The corresponding slots are respectively embedded in opposite sides of the frame along the second horizontal direction.

[0009] According to some embodiments of this application, the upper ends of the frame, the collection basket, and the box body are flush, and a sealing gasket is provided between the box body and the box cover, with the sealing gasket abutting against the upper ends of the frame, the collection basket, and the box body.

[0010] According to some embodiments of this application, at least two filter modules are provided, and a water collection pipe is connected between the water outlet pipes of each filter module, and the pumping mechanism is connected between the water collection pipe and the maintenance pipe.

[0011] According to some embodiments of this application, the maintenance pipe is provided with a plurality of connecting seats spaced apart along its length, and the maintenance trolley further includes: Multiple support arms are provided, each corresponding to a connecting seat. One end of each support arm is connected to the vehicle frame, and the other end is detachably connected to the corresponding connecting seat.

[0012] According to some embodiments of this application, the support arm has a mounting groove at one end away from the frame, and the mounting groove is closed on both sides along a third horizontal direction, with a first connecting hole penetrating through the inner wall of at least one side; the connecting seat has a second connecting hole extending along the third horizontal direction, the connecting seat is partially inserted into the mounting groove, and the second connecting hole is aligned with the first connecting hole; a locking mechanism is provided between the support arm and the connecting seat, the locking mechanism including: A locking part is installed on the support arm and adapted to pass through the first connecting hole and the second connecting hole; An elastic part is provided for applying an elastic force to the locking part to keep the locking part passing through the first connecting hole and the second connecting hole; The locking part is configured to move along the third horizontal direction under the action of an external force until it separates from the second connecting hole.

[0013] According to some embodiments of this application, the support arm is connected to a mounting base, the locking part is configured as a locking rod, the locking rod slides through the mounting base along the third horizontal direction, the outer peripheral wall of the locking rod is provided with a flange, the elastic part is configured as a compression spring, the compression spring is sleeved on the locking rod, and its two ends respectively abut against the mounting base and the flange.

[0014] According to some embodiments of this application, the mounting base defines a protective cavity, and along the third horizontal direction, the protective cavity has an opening on the side near the support arm and a through hole on the side away from the support arm; The flange is slidably engaged with the protective cavity, the locking rod is slidably inserted through the through hole, and the compression spring is located inside the protective cavity.

[0015] According to some embodiments of this application, the locking rod is detachably connected to a pull plate on the side of the mounting base away from the support arm, and the pull plate protrudes from the outer peripheral wall of the locking rod.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of the maintenance trolley according to an embodiment of this application; Figure 2 This is a schematic diagram of the installation structure of the water tank and filter module according to an embodiment of this application; Figure 3 This is an exploded view of the structure of the filtering module in an embodiment of this application; Figure 4 This is a schematic diagram of the internal structure of the filtering module in an embodiment of this application; Figure 5 This is a schematic diagram of the installation structure of the maintenance pipe and support arm according to an embodiment of this application; Figure 6 This is an exploded view of the installation structure of the maintenance pipe and support arm according to an embodiment of this application; Figure 7 This is a cross-sectional schematic diagram of the installation structure of the maintenance pipe and support arm according to an embodiment of this application; Figure 8 This is an exploded view of the installation structure of the locking mechanism and the second arm in an embodiment of this application.

[0018] Icon labels: Frame 100; Maintenance pipe 200, nozzle 201, connector 210, second connecting hole 211; Water tank 300; Filter module 400, filter box 410, filter part 420, box body 430, water inlet pipe 431, water outlet pipe 432, box cover 440, debris collection basket 450, water inlet 451, water outlet 452, slot 453, sealing gasket 460, water collection pipe 470; Pumping mechanism 500, water pump 510, main liquid supply pipe 520, main liquid inlet pipe 530; Support arm 600, mounting groove 601, first connecting hole 602, first arm 610, second arm 620, threaded cylinder 621, set screw 630, mounting base 640, protective cavity 641; Locking mechanism 700, elastic part 710, locking rod 720, flange 721, pull plate 730, limit nut 740. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0021] In the description of this application, "multiple" refers to two or more. The use of "first" and "second" is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or the order in which the technical features are indicated.

[0022] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0023] Reference Figures 1 to 5 As shown, a maintenance trolley according to one embodiment of this application includes a frame 100 and a spray maintenance system.

[0024] The frame 100 serves as the load-bearing foundation for the entire maintenance trolley, used to install and support various functional components. The frame 100 is typically a frame structure welded from structural steel, with wheels or a traveling mechanism at its bottom. The spray maintenance system includes a maintenance pipe 200, a water tank 300, a filter module 400, and a pumping mechanism 500.

[0025] The maintenance pipe 200 is installed on the upper part of the frame 100. The shape of the maintenance pipe 200 matches the outline of the tunnel inner wall and has an overall arc structure. Multiple nozzles 201 are spaced apart along the length of the maintenance pipe 200, and each nozzle 201 is connected to the internal flow channel of the maintenance pipe 200.

[0026] The water tank 300 is mounted on the frame 100 and is used to store maintenance water. A water inlet pipe is provided at the top of the water tank 300 for replenishing maintenance water into the water tank 300. A valve or pipe cap is provided on the water inlet pipe to prevent debris from entering the water tank 300 when water replenishment is not required.

[0027] The filter module 400 is used to filter the maintenance water flowing out of the water tank 300. The filter module 400 includes a filter box 410 and multiple filter elements 420. The filter box 410 includes a box body 430 and a cover 440. The box body 430 is generally rectangular and has an inner cavity with an opening at the top. The cover 440 is detachably mounted on the top of the box body 430, specifically through snaps, bolts, or fasteners. An inlet pipe 431 and an outlet pipe 432 are respectively provided on opposite sides of the box body 430 along a first horizontal direction. The inlet pipe 431 communicates with the lower part of the water tank 300. Multiple filter elements 420 are detachably disposed within the box body 430 and arranged at intervals along the first horizontal direction. From the inlet pipe 431 to the outlet pipe 432, the diameter of the filter holes in each filter section 420 decreases sequentially. Specifically, the filter section 420 closest to the inlet pipe 431 has a larger diameter to intercept large-diameter impurities in the maintenance water. The diameter of the filter holes in subsequent filter sections 420 along the water flow direction gradually decreases to intercept medium and small-diameter impurities, forming a graded filtration mechanism from the inlet pipe 431 to the outlet pipe 432. After entering the filter box 410, the maintenance water passes through multiple filter sections 420 sequentially, where solid impurities of different sizes are intercepted step by step. It should be noted that the outer contour of the filter section 420 matches the cross-sectional contour of the flow channel between the inlet pipe 431 and the outlet pipe 432 to prevent the maintenance water from bypassing the filter section 420.

[0028] The pumping mechanism 500 is connected between the outlet pipe 432 and the maintenance pipe 200, and is used to pump the filtered maintenance water into the maintenance pipe 200.

[0029] The maintenance trolley of this application embodiment, by setting a filter module 400 between the water tank 300 and the pumping mechanism 500, and arranging multiple filter sections 420 with progressively smaller filter hole diameters along the water flow direction in the filter module 400, achieves graded filtration of solid impurities in the maintenance water. This avoids the problem of insufficient filtration accuracy of a single filter section 420, and also avoids the problem of high-precision filter sections 420 being clogged too quickly when directly exposed to large particles of impurities. This significantly improves filtration efficiency and filtration accuracy, ensuring the long-term reliable operation of the spray maintenance system. At the same time, by setting the filter box 410 into a detachably connected box body 430 and a box cover 440, and detachably setting the filter section 420 inside the box body 430, it is convenient for operators to periodically open the box cover 440 to clean the filter module 400.

[0030] Reference Figure 1 As shown, in some embodiments of this application, the pumping mechanism 500 includes a water pump 510, a main supply pipe 520 and an inlet pipe 530. The output end of the water pump 510 is connected to the maintenance pipe 200 through the main supply pipe 520, and the input end is connected to the outlet pipe 432 of the filter module 400 through the inlet pipe 530.

[0031] Reference Figures 2 to 4 As shown, in some embodiments of this application, the filter box 410 further includes a collection basket 450; the collection basket 450 is placed inside the box body 430, and the collection basket 450 has an inner cavity with an opening at the top. Along the first horizontal direction, the outer walls of opposite sides of the collection basket 450 are respectively attached to the inner walls of opposite sides of the box body 430, and along the first horizontal direction, the opposite sides of the collection basket 450 are respectively provided with an inlet 451 and an outlet 452, and the inlet 451 is connected to the inlet pipe 4 The 31 are aligned and interconnected, and the outlet 452 is aligned and interconnected with the outlet pipe 432, so that the maintenance water flowing in from the inlet pipe 431 can directly enter the collection basket 450 from the inlet 451 and then flow from the outlet 452 to the outlet pipe 432; wherein, each filter part 420 is disposed in the collection basket 450 and arranged at intervals along the first horizontal direction, and the collection basket 450 is configured to be removed from the top of the box body 430 after the box cover 440 is opened.

[0032] In this embodiment, by centrally installing each filter section 420 inside the collection basket 450, a component that can be pulled out as a whole is formed. When it is necessary to clean or replace the filter section 420, the operator only needs to open the box cover 440 and take the collection basket 450 out of the box body 430. The filter section 420 can be disassembled and assembled from outside the box body 430, which improves the convenience of maintenance. At the same time, the collection basket 450 can also trap impurities in its inner cavity. When the collection basket 450 is taken out, the impurities can be taken out with it, which also improves the convenience of impurity cleaning.

[0033] In some specific embodiments, both the collection basket 450 and the box body 430 are cuboid structures. The outer contour of the cross-section of the collection basket 450 matches the inner contour of the cross-section of the box body 430. The four outer walls of the collection basket 450 are attached to the inner wall of the box body 430. On the one hand, this can provide horizontal positioning for the collection basket 450. On the other hand, it can also prevent the maintenance water from flowing through the gap between the collection basket 450 and the box body 430 without passing through the filter section 420.

[0034] Reference Figures 2 to 4As shown, in some embodiments of this application, each filter unit 420 includes a frame and a filter screen fixed to the frame. Along a second horizontal direction perpendicular to the first horizontal direction, slots 453 are respectively provided on opposite sides of the collection basket 450 corresponding to the frame. The slots 453 extend vertically and have openings at their upper ends. The corresponding slots 453 are embedded into opposite sides of the frame along the second horizontal direction. The slots 453 limit the frame, keeping the filter units 420 vertical within the collection basket 450, and they are arranged at intervals along the first horizontal direction. Because the upper ends of the slots 453 are open, operators can insert each filter unit 420 into the slot 453 one by one from above, or pull the filter unit 420 upwards from the slot 453, further facilitating the disassembly, assembly, and cleaning of the filter units 420.

[0035] It is understandable that the slot 453 can be directly machined into the inner wall of the collection basket 450, or a protrusion can be provided on the inner wall of the collection basket 450 to define the slot 453.

[0036] Reference Figure 4 As shown, in some embodiments of this application, the upper end of the frame, the upper end of the collection basket 450, and the upper end of the box body 430 are flush, that is, the upper surfaces of the three are in the same horizontal plane; a sealing gasket 460 is provided between the box body 430 and the lid 440. The sealing gasket 460 is made of a flexible material, such as rubber or silicone. The lower surface of the sealing gasket 460 simultaneously abuts against the upper end of the frame, the upper end of the collection basket 450, and the upper end of the box body 430. In this embodiment, through the above structural arrangement, the sealing gasket 460 forms a complete coverage and tight seal on the entire opening area of ​​the upper end of the box body 430, which not only prevents the maintenance water from leaking outward from the gap between the box body 430 and the lid 440, but also prevents the maintenance water from bypassing the filter part 420 and flowing through the gap between the collection basket 450 and the box body 430. This ensures that all maintenance water must pass through each filter part 420 in sequence before flowing out from the outlet pipe 432, thus ensuring the filtration effect.

[0037] Reference Figure 1 and Figure 2 As shown, in some embodiments of this application, at least two filter modules 400 are provided, and a water collection pipe 470 is connected between the water outlet pipes 432 of each filter module 400. That is, the water outlet pipes 432 of each filter module 400 are connected in parallel and converge into the water collection pipe 470. The pumping mechanism 500 is connected between the water collection pipe 470 and the maintenance pipe 200. In this embodiment, by providing at least two parallel filter modules 400, when one filter module 400 becomes clogged, the other filter modules 400 can still maintain normal water flow. The maintenance water can be transported to the pumping mechanism 500 through the unblocked filter modules 400 via the water collection pipe 470, effectively avoiding equipment downtime caused by clogging of the filter section 420 and ensuring the continuity of tunnel lining maintenance operations.

[0038] Reference Figure 1 , Figure 5 and Figure 6 As shown, in some embodiments of this application, the maintenance pipe 200 is detachably mounted to the upper part of the frame 100 via multiple support arms 600. Specifically, the maintenance pipe 200 is provided with multiple connecting seats 210 at intervals along its length, and the connecting seats 210 can be fixed to the outer wall of the maintenance pipe 200 by welding or bolting. The maintenance trolley also includes multiple support arms 600, and each support arm 600 is correspondingly provided with a connecting seat 210, that is, each connecting seat 210 is provided with one support arm 600. One end of each support arm 600 is fixedly connected to the frame 100, and the other end is detachably connected to the corresponding connecting seat 210, thereby detachably mounting the maintenance pipe 200 to the upper part of the frame 100.

[0039] Reference Figures 5 to 8 As shown in some embodiments of this application, the end of the support arm 600 away from the frame 100 is provided with a mounting groove 601. The mounting groove 601 is closed on both sides along the third horizontal direction, and a first connecting hole 602 is provided through the inner wall of at least one side of the mounting groove 601 along the third horizontal direction. The connecting seat 210 is provided with a second connecting hole 211 extending along the third horizontal direction. The connecting seat 210 is partially inserted into the mounting groove 601, and the second connecting hole 211 is aligned with the first connecting hole 602. Since the mounting groove 601 is closed on both sides along the third horizontal direction, the mounting groove 601 can limit the displacement of the connecting seat 210 along the third horizontal direction. A locking mechanism 700 is provided between the support arm 600 and the connecting seat 210. The locking mechanism 700 includes a locking part and an elastic part 710.

[0040] A locking part is mounted on the support arm 600 and is adapted to pass through the first connecting hole 602 and the second connecting hole 211. An elastic part 710 applies an elastic force to the locking part to maintain its position in the first connecting hole 602 and the second connecting hole 211, thereby keeping the support arm 600 connected to the connecting seat 210. The locking part is configured to move along a third horizontal direction under external force until it separates from the second connecting hole 211, thereby allowing the connecting seat 210 to be pulled out of the mounting groove 601.

[0041] In this embodiment, when the maintenance tube 200 needs to be disassembled, the operator only needs to apply external force to the locking part, so that it overcomes the elastic force of the elastic part 710 and moves along the third horizontal direction until the locking part exits from the second connecting hole 211. At this time, the lock between the connecting seat 210 and the support arm 600 is released. When each connecting seat 210 is unlocked from the corresponding support arm 600, the maintenance tube 200 can be removed from each support arm 600. During installation, first insert each connecting seat 210 into the corresponding mounting groove 601, so that the first connecting hole 602 is aligned with the second connecting hole 211, and then release the locking part, so that the locking part automatically passes into the second connecting hole 211 under the action of the elastic part 710, and completes the locking. By adopting the above structure, the disassembly and assembly of the maintenance tube 200 does not require any tools, the operation is simple and quick, and the maintenance efficiency and safety are improved.

[0042] It should be noted that in this embodiment, the third horizontal direction is the length direction of the tunnel, and the length direction of the support arm 600 is perpendicular to the third horizontal direction. In addition, the first horizontal direction can be parallel to or perpendicular to the third horizontal direction, or it can be set at an angle.

[0043] Reference Figure 1 , Figures 5 to 7 As shown, in some embodiments of this application, the second connecting hole 211 is a circular hole, and the support arm 600 includes a first arm 610 and a second arm 620; one end of the first arm 610 is hinged to the frame 100, and the hinge axis is parallel to the third horizontal direction; the second arm 620 is connected to the first arm 610 and can be moved and adjusted relative to the first arm 610 along the length direction of the first arm 610 to adjust the length of the support arm 600; wherein, the first connecting hole 602 is provided at the end of the second arm 620 away from the first arm 610, and correspondingly, the locking part is installed at the end of the second arm 620 away from the first arm 610.

[0044] In this embodiment, since the support arm 600 is hinged to the frame 100 and its length is adjustable, the distance between the maintenance pipe 200 and the tunnel wall can be adjusted by adjusting the length of each support arm 600, thereby adapting to the maintenance of different tunnel cross sections. Specifically, during adjustment, the length of each support arm 600 is adjusted first, and then the maintenance pipe 200 is connected to each support arm 600. When the maintenance pipe 200 is connected to each support arm 600, the length of the support arm 600 cannot be adjusted.

[0045] It should be noted that since the support arm 600 is hinged to the frame 100 and its length is adjustable, when each support arm 600 is adjusted to a different length for different tunnel cross sections, there may be an angular deviation between the second connecting hole 211 on each connecting seat 210 and the corresponding locking part, making it impossible to align and insert. Therefore, in this embodiment, the second connecting hole 211 is set as a circular hole, allowing the locking part to have a certain angular tolerance when inserted, ensuring that the locking part can still smoothly pass through the second connecting hole 211 after each support arm 600 is adjusted to the correct position.

[0046] It should also be noted that the specific number, installation angle, and installation position of the support arms 600 can be flexibly selected, as long as the maintenance pipe 200 can be reliably connected to the frame 100 through each support arm 600.

[0047] In some specific embodiments, the frame 100 is provided with an articulation seat for articulating with the first arm 610 of the support arm 600.

[0048] Reference Figure 6 and Figure 7 As shown, in some embodiments of this application, both the second arm 620 and the first arm 610 are rod-shaped structures. The second arm 620 is hollow and slidably sleeved on the outside of the first arm 610. The support arm 600 also includes a set screw 630, which is threaded onto the second arm 620. Its end abuts against the outer wall of the first arm 610 to lock the second arm 620 to the first arm 610. After the set screw 630 is loosened, the second arm 620 can slide along the length direction of the first arm 610 to realize the length adjustment of the support arm 600.

[0049] Reference Figure 7 As shown, in some embodiments of this application, multiple set screws 630 are provided at intervals along the length direction of the second arm 620, so that the second arm 620 can be locked onto the first arm 610 at different positions.

[0050] Reference Figure 6 and Figure 7 As shown, in some embodiments of this application, a threaded cylinder 621 is fixedly provided on the first arm 610. The threaded cylinder 621 has a threaded hole for installing a set screw 630.

[0051] Reference Figure 7 and Figure 8As shown, in some embodiments of this application, the second arm 620 of the support arm 600 is connected to the mounting base 640, the locking part is configured as a locking rod 720, the locking rod 720 slides through the mounting base 640 along the third horizontal direction, the outer peripheral wall of the locking rod 720 is provided with a flange 721, the elastic part 710 is configured as a compression spring, the compression spring is sleeved on the locking rod 720, and its two ends abut against the mounting base 640 and the flange 721 respectively. After assembly, the compression spring is in a pre-compressed state, applying an elastic force to the flange 721 in the direction of the mounting groove 601, so that the locking rod 720 is kept in the state of passing through the first connecting hole 602 and the second connecting hole 211.

[0052] Reference Figure 7 and Figure 8 As shown, in some embodiments of this application, a protective cavity 641 is defined within the mounting base 640. Along the third horizontal direction, the protective cavity 641 has an opening on the side near the support arm 600 and a through hole on the side away from the support arm 600. The flange 721 is slidably engaged with the protective cavity 641, that is, the outer peripheral contour of the flange 721 is adapted to the inner peripheral contour of the protective cavity 641, so that the flange 721 can slide smoothly within the protective cavity 641 along the third horizontal direction. The locking rod 720 is slidably inserted through the through hole, and the compression spring is located within the protective cavity 641 and sleeved on the portion of the locking rod 720 located within the protective cavity 641.

[0053] In this embodiment, by providing a protective cavity 641, on the one hand, the inner wall of the protective cavity 641 guides the movement of the flange 721 and the locking rod 720, making the movement of the locking part more stable; on the other hand, it isolates the compression spring from the external environment (such as cement slurry, dust, etc.), improving its reliability and service life in harsh construction environments.

[0054] Reference Figure 6 As shown, in some embodiments of this application, the mounting base 640 is connected to the support arm 600 by fasteners, which may be bolts. The detachable mounting base 640 facilitates the disassembly and maintenance of the locking mechanism 700.

[0055] Reference Figure 7 and Figure 8 As shown, in some embodiments of this application, a pull plate 730 is detachably connected to the locking lever 720 on the side of the mounting base 640 away from the support arm 600. The pull plate 730 protrudes from the outer peripheral wall of the locking lever 720. In this embodiment, by providing the pull plate 730, a reliable manual force application point can be provided for the operator. The operator can overcome the elastic force of the compression spring by pulling the pull plate 730, causing the locking lever 720 to move in the third horizontal direction away from the mounting groove 601, making the operation very convenient.

[0056] Reference Figure 7 and Figure 8As shown, in some embodiments of this application, the pull plate 730 is provided with a sleeve hole, and the locking rod 720 is sleeved through the sleeve hole; the locking rod 720 is provided with an external thread on the side of the pull plate 730 away from the mounting base 640, and a limit nut 740 is threadedly connected to it; during assembly, the pull plate 730 is first sleeved onto the locking rod 720, and then the limit nut 740 is installed, so that the pull plate 730 can be restricted on the locking rod 720. This detachable connection method can facilitate the maintenance of the pull plate 730.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine different embodiments or examples described in this specification.

[0058] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A maintenance trolley, characterized in that, include: Frame; A spray maintenance system includes a maintenance pipe, a water tank, a filter module, and a pumping mechanism. The maintenance pipe is installed on the upper part of the vehicle frame and has multiple spray nozzles. The water tank is used to store maintenance water. The filter module includes a filter box and multiple filter elements. The filter box includes a box body and a box cover. The box body has an inner cavity with an opening at the top. The box cover is detachably installed on the upper end of the box body. An inlet pipe and an outlet pipe are respectively provided on opposite sides of the box body along a first horizontal direction. The inlet pipe is connected to the water tank. The multiple filter elements are detachably installed in the box body and arranged at intervals along the first horizontal direction. From the inlet pipe to the outlet pipe, the diameter of the filter holes of each filter element decreases sequentially. The pumping mechanism is connected between the outlet pipe and the maintenance pipe and is used to pump maintenance water into the maintenance pipe.

2. The maintenance trolley according to claim 1, characterized in that, The filter cartridge also includes: A collection basket is placed inside the box and has an inner cavity with an opening at the top. Along the first horizontal direction, the outer walls of opposite sides of the collection basket are respectively attached to the inner walls of opposite sides of the box. Along the first horizontal direction, the opposite sides of the collection basket are respectively provided with a water inlet and a water outlet. The water inlet is aligned and connected to the water inlet pipe, and the water outlet is aligned and connected to the water outlet pipe. Each of the filter sections is disposed within the collection basket, and the collection basket is configured to be removed from the top of the box body after the box lid is opened.

3. The maintenance trolley according to claim 2, characterized in that, The filtering section includes a frame and a filter screen fixed to the frame. Along a second horizontal direction perpendicular to the first horizontal direction, slots are respectively provided on opposite sides of the collection basket corresponding to the frame. The slots extend vertically and have openings at their upper ends. The corresponding slots are respectively embedded in opposite sides of the frame along the second horizontal direction.

4. The maintenance trolley according to claim 3, characterized in that, The upper ends of the frame, the collection basket, and the box are flush. A sealing gasket is provided between the box and the lid, and the sealing gasket abuts against the upper ends of the frame, the collection basket, and the box.

5. The maintenance trolley according to claim 1, characterized in that, The filter module is provided with at least two, and a water collection pipe is connected between the water outlet pipes of each filter module. The pumping mechanism is connected between the water collection pipe and the maintenance pipe.

6. The maintenance trolley according to claim 1, characterized in that, The curing pipe is provided with multiple connecting seats at intervals along its length, and the curing trolley also includes: Multiple support arms are provided, each corresponding to a connecting seat. One end of each support arm is connected to the vehicle frame, and the other end is detachably connected to the corresponding connecting seat.

7. The maintenance trolley according to claim 6, characterized in that, The support arm has a mounting groove at its end away from the frame. Along a third horizontal direction, the mounting groove is closed on both sides, and at least one inner wall has a first connecting hole. The connecting seat has a second connecting hole extending along the third horizontal direction. The connecting seat is partially inserted into the mounting groove, and the second connecting hole is aligned with the first connecting hole. A locking mechanism is provided between the support arm and the connecting seat, the locking mechanism including: A locking part is installed on the support arm and adapted to pass through the first connecting hole and the second connecting hole; An elastic part is provided for applying an elastic force to the locking part to keep the locking part passing through the first connecting hole and the second connecting hole; The locking part is configured to move along the third horizontal direction under the action of an external force until it separates from the second connecting hole.

8. The maintenance trolley according to claim 7, characterized in that, The support arm is connected to a mounting base, the locking part is configured as a locking rod, the locking rod slides through the mounting base along the third horizontal direction, the outer peripheral wall of the locking rod is provided with a flange, the elastic part is configured as a compression spring, the compression spring is sleeved on the locking rod, and its two ends abut against the mounting base and the flange respectively.

9. The maintenance trolley according to claim 8, characterized in that, The mounting base defines a protective cavity. Along the third horizontal direction, the protective cavity has an opening on the side near the support arm and a through hole on the side away from the support arm. The flange is slidably engaged with the protective cavity, the locking rod is slidably inserted through the through hole, and the compression spring is located inside the protective cavity.

10. The maintenance trolley according to claim 9, characterized in that, The locking rod is detachably connected to a pull plate on the side of the mounting base away from the support arm, and the pull plate protrudes from the outer peripheral wall of the locking rod.

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