Movable pump station and winch device thereof

Abstract

The utility model discloses a mobile pump station and capstan device thereof, wherein the capstan device comprises: capstan, pulley and limit support, the rope of capstan bypasses the pulley, the pulley is arranged on the limit support through the rotating shaft, the pulley can rotate around the rotating shaft, the limit support surrounds the pulley, and the limit support is arranged on the pulley. Therefore, the rope wound on the pulley is prevented from being separated from the pulley. The rope penetrates through the limiting support from back to front, the limiting support surrounds the pulley in the up-down-left-right direction and restrains the rope, the rope is made to make contact with the circumference of the pulley as much as possible to run, and the hidden danger that the rope slips off from the pulley is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of emergency equipment especially relates to a mobile pump station and winch device thereof. BACKGROUND

[0002] In today's society, drainage equipment shoulders heavy responsibilities in agricultural and urban irrigation and drainage, flood control and drainage tasks. Many low, narrow and special areas, such as narrow streets, underground passages, underground garages and subway stations, due to space constraints, large drainage equipment can not enter smoothly and carry out operations. Not only that, some complex road sections also hinder the passage of drainage equipment. Based on these problems, small mobile pump stations have emerged as the times require. With its small and flexible shape, it can shuttle in complex terrain and play a key role in drainage and rescue at critical moments.

[0003] The inventor realized through practical exploration that the water suction pipe of the mobile pump station can be hoisted by means of the winch device to reduce the carrying manpower. The winch device includes a winch and a pulley. The rope is wound around the winch. The winch is rotated to realize the winding and unwinding of the rope, thereby generating traction or lifting force. The pulley changes the force direction of the rope and assists the smooth running of the rope, enabling the winch to exert force more efficiently. However, in actual use, this structure has obvious defects:

[0004] The rope is prone to slip off the pulley under conditions such as uneven force, rapid winding and unwinding of the rope, or equipment vibration during operation. Once the rope slips off, it will interrupt the ongoing operation process, causing work to stop and seriously affecting work efficiency. UTILITY MODEL CONTENTS

[0005] Therefore, it is necessary to provide a mobile pump station and winch device to solve the problem that the rope is prone to slip off the pulley under conditions such as uneven force, rapid winding and unwinding of the rope, or equipment vibration during operation.

[0006] To achieve the above purpose, the embodiment provides a winch device, which comprises a winch, a pulley and a limiting support. The rope of the winch passes through the pulley. The pulley is arranged on the limiting support through a rotating shaft. The pulley can rotate around the rotating shaft. The limiting support surrounds the pulley to prevent the rope passing through the pulley from slipping off the pulley.

[0007] Further, the limiting support comprises a fixed seat and a limiting piece. The fixed seat has two symmetrical supporting arms supporting the rotating shaft. The pulley is located between the two supporting arms. The limiting piece is in the shape of an inverted U. The inverted U has through holes on both sides of the lower end for the rotating shaft to pass through. The two sides of the lower end of the inverted U are located on the outer sides of the two supporting arms. The fixed seat and the limiting piece surround the pulley and the rope on the pulley.

[0008] Further, the limiting support further comprises two nuts, both ends of the rotating shaft are provided with threads, and the two nuts are threadedly connected to both ends of the rotating shaft, wherein the nuts are located outside the limiting member to fix the limiting member and the supporting arm.

[0009] Further, the limiting support further comprises a flat washer and an elastic washer, the flat washer and the elastic washer are arranged between the nut and the supporting arm, the flat washer contacts the outer sidewall of the supporting arm, and both ends of the elastic washer respectively contact the flat washer and the nut.

[0010] Further, a groove for accommodating the rope is arranged on the circumference of the pulley.

[0011] Further, the groove is in the shape of U, V or H.

[0012] Further, the distance between the part corresponding to the position above the pulley of the limiting support and the edge of the groove is less than the diameter of the rope.

[0013] Further, the distance between the part corresponding to the position above the pulley of the limiting support and the upper end of the circumference of the pulley is 1-2 mm, and the diameter of the rope is 4-8 mm.

[0014] To achieve the above-mentioned purpose, the embodiment provides a mobile pump station, which comprises a chassis, a water pump and a capstan device as described in any one of the above-mentioned embodiments, the water pump is arranged on the chassis, the capstan device further comprises a base for supporting the limiting support of the capstan, the base is arranged on the pump shell of the water pump and above the water inlet of the water pump.

[0015] Further, a negative pressure mechanism is further included, the negative pressure mechanism is connected to the pump shell of the water pump through a vacuum connector, the negative pressure mechanism is used to form negative pressure in the pump shell, and the base has an avoiding channel for the vacuum connector.

[0016] Further, an anti-backflow box is further included, the anti-backflow box is used to prevent the liquid in the pump shell from flowing back to the negative pressure mechanism, the vacuum connector comprises a first connector and a second connector, the gas outlet of the pump shell is connected to the gas inlet of the anti-backflow box through the first connector and the anti-backflow box, the first connector passes through the avoiding channel, the gas outlet of the anti-backflow box is connected to the air suction port of the negative pressure mechanism through the second connector, and the base is further fixed with the anti-backflow box.

[0017] Further, the pump shell is provided with horizontally extending second connecting portions, the end of the second connecting portion is provided with a second screw hole, the lower end of the base is provided with vertically arranged second connecting plates, one of the second connecting plates and the second screw hole are connected by bolts, the base is further provided with a supporting plate for supporting the anti-backflow box, the second connecting plate is provided with an opening as a part of the avoiding channel, and the first connecting pipe passes through the opening.

[0018] Further, the upper end of the pump shell is provided with upwardly protruding first connecting portions, the end of the first connecting portion is provided with a first screw hole, the lower end of the base is provided with first connecting plates, one of the first connecting plates corresponds to one of the first connecting portions, the first connecting plate is L-shaped, the first connecting plate and the first screw hole are connected by bolts, and the avoiding channel is formed between two adjacent first connecting plates.

[0019] Further, the base is provided with a supporting plate, the supporting plate is provided with an inclined portion and a horizontal portion, the inclined portion extends upwardly and towards the water inlet of the water pump, and the horizontal portion is located at the top end of the inclined portion and horizontally extends to support the limiting support.

[0020] Further, the base is provided with a first connecting plate towards the water inlet side of the pump shell, and the inclined portion, the horizontal portion and the first connecting plate are provided with reinforcing ribs.

[0021] Further, the utility model further comprises a machine cover, the machine cover is rotatably arranged on the base plate and is used for covering the water pump, the machine cover is provided with a window at the position in front of the pulley, and the window is provided with a cover plate for covering the window.

[0022] Compared with the prior art, the above technical scheme has the following beneficial effects:

[0023] The rope passes through the limiting support from back to front, the limiting support surrounds the upper, lower, left and right directions of the pulley, and restricts the rope, so that the rope can contact the pulley as much as possible, and the hidden danger that the rope slips off the pulley is prevented.

[0024] The above-mentioned content related to the utility model is only a summary of the technical scheme of the application, in order to enable those skilled in the art to more clearly understand the technical scheme of the application, and then can be implemented according to the content recorded in the description and the drawings, and in order to enable the above-mentioned purpose and other purposes, characteristics and advantages of the application to be more easily understood, the following is described in combination with the specific embodiments of the application and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings are only used to show the principles, implementation manners, application, characteristics and effects of the specific embodiments of the utility model and other related contents, and cannot be considered as limitations to the present application.

[0026] Figure 1 It is a connection schematic view of the winch device, the water pump and the backflow prevention box in the embodiment;

[0027] Figure 2 It is a connection schematic view of the winch device, the water pump and the backflow prevention box in the embodiment;

[0028] Figure 3 It is Figure 2 It is an enlarged schematic view of the A part in the embodiment;

[0029] Figure 4 It is a front view of the winch device in the embodiment;

[0030] Figure 5 It is a connection schematic view of the winch device, the water pump, the backflow prevention box and the negative pressure mechanism in the embodiment;

[0031] Figure 6 It is a schematic view of the water pump in the embodiment;

[0032] Figure 7 It is a schematic view of the mobile pump station in the embodiment;

[0033] Figure 8 It is a schematic view of the machine cover and the cover plate in the embodiment.

[0034] Mark explanation:

[0035] 1, winch; 11, rope;

[0036] 2, pulley; 21, channel; 22, rim;

[0037] 3, limiting support; 31, fixed seat; 311, support arm; 32, limiting piece; 33, nut; 34, flat washer; 35, elastic washer; 36, rotating shaft;

[0038] 4, base; 41, first connecting plate; 42, second connecting plate; 43, supporting plate; 44, support plate; 441, inclined part; 442, horizontal part; 443, reinforcing rib; 45, avoiding passage; 451, opening;

[0039] 5, water pump; 51, water inlet; 52, first connecting part; 53, second connecting part;

[0040] 6, negative pressure mechanism;

[0041] 7, backflow prevention box;

[0042] 8, vacuum connection; 81, first connection; 82, second connection;

[0043] 9, chassis;

[0044] 10, engine;

[0045] 110, hood; 1101, window; 1102, cover plate. DETAILED DESCRIPTION

[0046] To make the possible application scenarios, technical principles, specific schemes that can be implemented, purposes and effects that can be achieved of the present application clear, the following will be described in detail in combination with the specific embodiments listed and the accompanying drawings. The embodiments described in the present document are only used to more clearly illustrate the technical schemes of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0047] In the present document, the term "embodiment" means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, and does not particularly limit the independence or association between other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, each technical feature mentioned in each embodiment can be combined in any way to form a corresponding implementable technical scheme.

[0048] Unless otherwise defined, the meanings of the technical terms used in the present document are the same as those commonly understood by those skilled in the art to which the present application belongs; the use of related terms in the present document is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0049] In the description of the present application, the phrase "and / or" is a description of the logical relationship between objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in the present document generally represents that the associated objects before and after are a "or" logical relationship.

[0050] In the present application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary and secondary or order relationship between the entities or operations.

[0051] In the present application, the terms "comprise", "contain", "include", or other similar expressions used in the description are intended to encompass non-exclusive inclusion, and the expressions do not exclude the presence of additional elements, so that the process, method or product comprising a series of elements can not only include those defined elements, but also include other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0052] In the present application, the expressions "greater than", "less than", "exceed" and the like are understood as not including the number itself; the expressions "above", "below", "within" and the like are understood as including the number itself. In addition, in the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), and similar expressions related to "multiple" are also understood in this way, for example, "multiple groups", "multiple times" and the like, unless otherwise explicitly specified.

[0053] In the description of the embodiments of the present application, the spatial-related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or the drawings, and are only for the convenience of describing the specific embodiments of the present application or for the reader to understand, and do not indicate or imply that the indicated device or component must have a particular position, a particular orientation, or be constructed or operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0054] Unless otherwise explicitly specified or limited, in the description of the embodiments of the present application, the terms "mount", "connect", "connect", "fix", "set", and the like should be understood broadly. For example, the "connection" can be a fixed connection, or a detachable connection, or an integral setting; it can be directly connected, or indirectly connected through an intermediate medium; it can be a relationship of two components combined together, or a mutual relationship of two components, or a communication within two structures. For those skilled in the art to which the present application belongs, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0055] Please refer to Figures 1 to 8The embodiment provides a winch device, which comprises a winch 1, a pulley 2 and a limiting support 3, a rope 11 of the winch 1 is wound around the pulley 2, the pulley 2 is arranged on the limiting support 3 through a rotating shaft 36, the pulley 2 can rotate around the rotating shaft 36, and the limiting support 3 surrounds the pulley 2 to prevent the rope 11 wound around the pulley 2 from being separated from the pulley 2.

[0056] When the winch 1 rotates, the winch 1 can wind or unwind the rope 11, thereby generating traction or lifting force. The rope 11 passes through the pulley 2, and the pulley 2 helps the rope 11 to operate more smoothly and changes the force direction of the rope 11.

[0057] The limiting support 3 can stably play a role in the following situations: the rope 11 shakes and twists due to speed change and unbalanced force in the process of winding or unwinding the rope 11 at a high speed, or vibration of the mobile pump station is transmitted to the winch device due to rugged terrain. The rope 11 passes through the limiting support 3 from back to front, the limiting support 3 surrounds the pulley 2 in the up, down, left and right directions, and restricts the rope 11, so that the rope 11 always contacts the wheel circumference of the pulley 2 to run, thereby preventing the rope 11 from slipping off the pulley 2.

[0058] Please refer to Figures 1 to 4 In the embodiment, the limiting support 3 comprises a fixed seat 31 and a limiting piece 32, the fixed seat 31 has two symmetrical supporting arms 311 supporting the rotating shaft 36, the pulley 2 is located between the two supporting arms 311, the limiting piece 32 is in the shape of an inverted U, the two sides of the lower end of the inverted U are respectively provided with through holes for the rotating shaft 36 to pass through, and the two sides of the lower end of the inverted U are respectively arranged on the outer sides of the two supporting arms 311. The fixed seat 31 and the limiting piece 32 surround the pulley 2 and the rope 11 on the pulley 2. The fixed seat 31 and the limiting piece 32 together surround the pulley 2 and the rope 11 on the pulley 2 to form an anti-separation structure. The fixed seat 31 comprises two symmetrical supporting arms 311 supporting the rotating shaft 36 of the pulley 2 and stably bearing the pulley 2 and force acting on the pulley 2. The pulley 2 is located between the two supporting arms 311. The limiting piece 32 is designed in the shape of an inverted U, and the two sides of the lower end of the inverted U can be mounted to the outer sides of the fixed seat 31. The fixed seat 31 and the limiting piece 32 are roughly in the shape of a mouth-shaped character. The inverted U structure forms a dome-like protection, which effectively prevents the rope 11 from jumping upward and separating from the pulley 2.

[0059] Please refer to Figure 3 and Figure 4In this embodiment, the limiting support 3 further comprises two nuts 33, the two ends of the rotating shaft 36 are provided with threads, and the two nuts 33 are threadedly connected to the two ends of the rotating shaft 36, wherein the nuts 33 are located outside the limiting piece 32 to fix the limiting piece 32 and the supporting arm 311. When the nuts 33 are tightened, they will exert outward pressure on the limiting piece 32 and inward pressure on the supporting arm 311, thus forming a clamping force to stably fix the limiting piece 32 outside the supporting arm 311. This design ensures that the limiting piece 32 will not loosen or shift even if it is affected by vibration or other external forces during the operation of the winch device, thereby maintaining its effective protection of the rope 11. In addition, if it is necessary to adjust or maintain the pulley 2 assembly, the limiting piece 32 can be easily disassembled by loosening the nuts 33, which is convenient for maintenance and repair.

[0060] Referring to Figure 3 and Figure 4 In this embodiment, the limiting support 3 further comprises a flat washer 34 and a spring washer 35, which are arranged between the nut 33 and the supporting arm 311. The flat washer 34 contacts the outer sidewall of the supporting arm 311, and the two ends of the spring washer 35 contact the flat washer 34 and the nut 33, respectively. The flat washer 34 is mainly used to enlarge the pressure distribution area of the nut 33 on the supporting arm 311, reduce the local pressure, and prevent the surface of the supporting arm 311 from being damaged or deformed when the nut 33 is tightened. The spring washer 35 has elasticity, which can provide additional pre-tightening force during the tightening of the nut 33, and due to its unique elastic properties, it can compensate to some extent for the loosening tendency of the nut 33 caused by vibration or other external forces, maintaining the fastening state of the nut 33. By adding the spring washer 35 and the flat washer 34, the connection strength of the limiting support 3 is significantly enhanced, the loosening risk caused by vibration or improper operation is reduced, and the stability of the winch device in operation is improved.

[0061] To further optimize the fixing mechanism of the limiting support 3, only one of the two nuts 33 is used with the flat washer 34 and the spring washer 35, and the other nut 33 does not need to be equipped with these components.

[0062] Referring to Figure 3 and Figure 4 In this embodiment, the pulley 2 is provided with a groove 21 around the circumference of the pulley 2 to accommodate the rope 11. The groove 21 surrounds the circumference of the pulley 2 and provides a fixed track for the rope 11. From the appearance, it seems that the rope 11 is "embraced" by the groove 21 when it runs on the pulley 2, allowing the rope 11 to run smoothly on the pulley 2.

[0063] In this embodiment, the groove 21 has a U-shaped, V-shaped, or H-shaped structure. Preferably, a U-shaped groove 21 is adopted, as shown in Figure 3 and Figure 4 ​

[0064] As shown in Figure 4 In this embodiment, the distance m between the part of the limiting support 3 corresponding to the position above the pulley 2 and the edge 22 of the groove 21 of the pulley 2 is less than the diameter of the rope 11. Figure 4 As shown, the part of the limiting support 3 corresponding to the position above the pulley 2 corresponds to the middle part of the limiting member 32, and the edge of the groove 21 of the pulley 2 corresponds to the upper end of the wheel circumference of the pulley 2. When the rope 11 is located in the groove 21 of the pulley 2, even if it is subjected to external force, the rope 11 cannot escape from above the pulley 2, because the limiting support 3 effectively blocks this path.

[0065] In some embodiments, the distance between the side edge of the limiting support 3 and the side edge of the pulley 2 can be designed to be less than the diameter of the rope 11. In this way, when the rope 11 tries to move away from the wheel circumference of the pulley 2, it will be blocked by the side edge of the limiting support 3.

[0066] As shown in Figure 4 In this embodiment, the distance m between the part of the limiting support 3 corresponding to the position above the pulley 2 and the edge 22 of the groove 21 of the pulley 2 is 1-2 mm. The diameter of the rope 11 is 4-8 mm. The rope 11 is generally selected to be a steel wire rope material, with a diameter of 6 mm, which can withstand the high strength tension applied by the winch 1 under various complex working conditions, and ensure stable and reliable operation in hoisting, pulling and other operation processes.

[0067] As shown in Figure 4 The present embodiment also provides a mobile pump station, as shown in Figures 1 to 8 As shown, the mobile pump station comprises a chassis 9, a water pump 5 and the winch device of any one of the above embodiments. The water pump 5 is arranged on the chassis 9, and the winch device further comprises a base 4 supporting the limiting support 3 of the winch 1, which is arranged on the pump shell of the water pump 5 and located above the water inlet 51 of the water pump 5. The chassis 9 serves as the basic structure of the entire mobile pump station, carrying the related components of the mobile pump station. The water pump 5 can use a centrifugal pump with large flow and high lift, and the pump shell is made of corrosion-resistant stainless steel material to ensure that it is not corroded and damaged during long-term pumping of sewage, rainwater and other media. Integrating the winch device with the water pump 5 cleverly utilizes the space, making the overall layout of the mobile pump station more compact and reasonable.

[0068] As shown in Figure 7In the embodiment, the mobile pump station further comprises a negative pressure mechanism 6 connected with the pump shell of the water pump 5 through a vacuum pipe 8, the negative pressure mechanism 6 is used to form a negative pressure in the pump shell, and the base 4 is provided with an avoiding channel 45 for the vacuum pipe 8. The negative pressure mechanism 6 forms a negative pressure in the pump shell, effectively increases the suction capacity of the water pump 5, and improves the water pumping efficiency. The base 4 of the winch device is specially designed to have the avoiding channel 45, which allows the vacuum pipe 8 to pass through the base 4 and reach the pump shell of the water pump 5. The avoiding channel 45 not only ensures the smooth passing of the vacuum pipe 8, but also effectively limits the vacuum pipe 8.

[0069] Referring to Figure 5 and Figure 1 In the embodiment, the mobile pump station further comprises an anti-backflow box 7 used to prevent the liquid in the pump shell from flowing back to the negative pressure mechanism 6. The vacuum pipe 8 comprises a first pipe 81 and a second pipe 82. The gas outlet of the pump shell is connected with the gas inlet of the anti-backflow box 7 through the first pipe 81, and the first pipe 81 passes through the avoiding channel 45. The gas outlet of the anti-backflow box 7 is connected with the gas suction inlet of the negative pressure mechanism 6 through the second pipe 82, and the base 4 is fixed with the anti-backflow box 7. The anti-backflow box 7 is installed between the pump shell and the negative pressure mechanism 6, and through the tortuous flow channel in the anti-backflow box 7, it is ensured that the liquid in the pump shell does not flow back to the negative pressure mechanism 6 when the negative pressure mechanism 6 works, thereby avoiding damage or performance degradation of the negative pressure mechanism 6 caused by the backflow of the liquid.

[0070] Referring to Figure 5 In the embodiment, the negative pressure mechanism 6 is a vacuum pump, which can quickly establish a stable negative pressure environment in the pump shell, thereby enhancing the suction force of the water pump 5 and being suitable for water pumping requirements of different depths.

[0071] Referring to Figure 5 , Figure 1 and Figure 5 In the embodiment, the pump shell is provided with a plurality of horizontally extending second connecting portions 53, the end of each second connecting portion 53 is provided with a second screw hole, the lower end of the base 4 is provided with a vertically arranged second connecting plate 42, one second connecting plate 42 is connected with the second screw holes through bolts, and the base 4 is further provided with an L-shaped supporting plate 43 for supporting the anti-backflow box 7. The second connecting plate 42 is provided with an opening 451 as a part of the avoiding channel 45, and the first pipe 81 passes through the opening 451. Figure 6As shown, the base 4 has a larger second connecting plate 42 which is screwed to the two second connecting parts 53 on the pump shell. This greatly improves the connection strength between the base 4 and the pump shell, ensuring the stability of the capstan device, the anti-backflow box 7 and the entire mobile pump station, which is particularly important in complex environments or frequent use scenarios. The supporting plate 43 is located in the back direction of the second connecting part 53 and is welded to the bottom and front of the anti-backflow box 7. The welding fixation makes the supporting plate 43 and the anti-backflow box 7 form an integral structure, improving the stability and durability of the anti-backflow box 7 and reducing the risk of loosening or falling off. In some embodiments, the supporting plate 43 can be bolted to the anti-backflow box 7.

[0072] Please refer to Figure 5 and Figure 1 In this embodiment, the upper end of the pump shell protrudes upward with several first connecting parts 52, the end of the first connecting part 52 has a first screw hole, and the lower end of the base 4 is provided with several first connecting plates 41, one first connecting plate 41 corresponds to one first connecting part 52, the first connecting plate 41 is L-shaped, the first connecting plate 41 and the first screw hole are connected by bolts, and the adjacent two first connecting plates 41 form part of the avoiding channel 45. Figure 6 As shown, the pump shell has four connecting points, two of which are first connecting parts 52 and the other two are second connecting parts 53. The first connecting parts 52 and the second connecting parts 53 are arranged in front and back, and generally the first connecting parts 52 are located in front of the second connecting parts 53 (generally the water pump 5 is installed on the front end of the base plate 9). Each first connecting plate 41 is connected to the first screw hole on the corresponding first connecting part 52 by a bolt, ensuring that the base 4 is firmly fixed on the pump shell. The avoiding channel 45 formed between the adjacent two first connecting plates 41 allows the vacuum pipe 8 to be arranged smoothly, avoiding excessive exposure and shaking of the pipe.

[0073] Please refer to Figure 6 and Figure 2 In this embodiment, the base 4 has a supporting plate 44, which has an inclined part 441 and a horizontal part 442. The inclined part 441 extends upward and in the direction of the water inlet of the water pump 5, and the horizontal part 442 is located at the top end of the inclined part 441 and extends horizontally to support the limiting bracket 3. The water pump 5 is usually installed on the front end of the base plate 9, and the inclined part 441 extends obliquely to the front, as far as possible to install the pulley 2 near the water inlet 51. The horizontal part 442 extends horizontally to support the limiting bracket 3, ensuring that the limiting bracket 3 and the pulley 2 are in a stable horizontal position.

[0074] Please refer to Figure 3 , Figure 1 and Figure 2In the embodiment, the base 4 has a first connecting plate 41 on the side facing the water inlet 51 of the pump housing, and a reinforcing rib 443 is arranged between the inclined part 441, the horizontal part 442 and the first connecting plate 41. The reinforcing rib 443 is designed to help evenly distribute external forces to the entire base 4 structure, reducing local stress concentration, effectively enhancing the connection strength between the components, and reducing the risk of deformation or damage due to external vibration or load.

[0075] Please refer to Figure 5 In the embodiment, the chassis 9 is a track chassis 9, which supports the engine 10. The engine 10 is in transmission connection with the water pump 5, and is used to drive the water pump 5 to operate to pump water.

[0076] Please refer to Figure 7 Figure 8 The mobile pump station further comprises a machine cover 110, which is rotatably arranged on the chassis 9 and is used to cover the water pump 5. The machine cover 110 is provided with a window 1101 corresponding to the position in front of the pulley 2, and the window 1101 is provided with a cover plate 1102 used to cover the window 1101. When the winch 1 is used, the cover plate 1102 is opened to open the window 1101, and the rope 11 can be extended out of the window 1101 for operation. After the winch 1 is used, the rope is retracted and the cover plate 1102 is closed, and the machine cover 110 protects the internal winch device.

[0077] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of the present application, this does not limit the patent protection scope of the present application. Any equivalent structure or equivalent process substitution or modification based on the essential concept of the present application, using the content described in the specification and drawings, and directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of the present application.

Claims

1. A winch arrangement characterised in that, The invention relates to a winch device, comprising: a winch, a rope of which is wound around a pulley, the pulley being arranged on a limiting support through a rotating shaft, the pulley being rotatable around the rotating shaft, the limiting support surrounding the pulley to prevent the rope wound around the pulley from being detached from the pulley.

2. A winch arrangement according to claim 1, characterised in that, The limiting support comprises a fixed base and a limiting member, the fixed base having two symmetrically arranged supporting arms, the rotating shaft being supported by the two supporting arms, the pulley being located between the two supporting arms, the limiting member being in the shape of an inverted U, the two sides of the lower end of the inverted U having through holes for the rotating shaft to pass through, the two sides of the lower end of the inverted U being located outside the two supporting arms, the fixed base and the limiting member surrounding the pulley and the rope wound around the pulley.

3. A winch arrangement according to claim 2, characterised in that, The limiting support further comprises two nuts, the two ends of the rotating shaft being provided with threads, the two nuts being threadedly connected to the two ends of the rotating shaft, wherein the nuts are located outside the limiting member to fix the limiting member and the supporting arms.

4. A winch arrangement according to claim 3, characterised in that, The limiting support further comprises a flat washer and an elastic washer, the flat washer and the elastic washer being arranged between the nuts and the supporting arms, the flat washer contacting the outer wall of the supporting arms, the two ends of the elastic washer contacting the flat washer and the nuts respectively.

5. A winch arrangement according to any one of claims 1-4, characterized in that The pulley is provided with a groove around the circumference of the pulley for accommodating the rope.

6. A winch arrangement according to claim 5, characterised in that, The groove is in the shape of a U, a V or an H.

7. A winch arrangement according to claim 5, characterised in that, The distance between the part of the limiting support corresponding to the position above the pulley and the edge of the groove is less than the diameter of the rope.

8. A winch arrangement according to claim 7, characterised in that, The distance between the part of the limiting support corresponding to the position above the pulley and the upper end of the circumference of the pulley is 1-2 mm, and the diameter of the rope is 4-8 mm.

9. A mobile pump station, characterized by The invention further relates to a water pump device, comprising a base plate, a water pump and the winch device according to any one of claims 1-8, the water pump being arranged on the base plate, the winch device further comprising a base for supporting the limiting support of the winch, the base being arranged on the pump housing of the water pump and located above the water inlet of the water pump.

10. The mobile pump station of claim 9, wherein, The water pump device further comprises a negative pressure mechanism connected to the pump housing of the water pump through a vacuum pipe, the negative pressure mechanism being used to form a negative pressure in the pump housing, the base having an avoiding passage for the vacuum pipe to pass through.

11. The mobile pump station of claim 10, wherein, The water pump device further comprises an anti-backflow box for preventing the liquid in the pump housing from flowing back into the negative pressure mechanism, the vacuum pipe comprising a first pipe and a second pipe, the gas outlet of the pump housing being connected to the gas inlet of the anti-backflow box through the first pipe and the anti-backflow box, the first pipe passing through the avoiding passage, the gas outlet of the anti-backflow box being connected to the gas suction outlet of the negative pressure mechanism through the second pipe, and the base being further fixed with the anti-backflow box.

12. The mobile pump station of claim 11, wherein, The pump housing is provided with a plurality of horizontally extending second connecting parts, the end of each second connecting part being provided with a second screw hole, the lower end of the base being provided with a vertically arranged second connecting plate, one second connecting plate being connected to the second screw holes through bolts, the base further having a supporting plate for supporting the anti-backflow box, the second connecting plate being provided with an opening as a part of the avoiding passage, and the first pipe passing through the opening.

13. The mobile pump station of claim 9 or 10, wherein, The upper end of the pump shell protrudes upwardly with a plurality of first connecting portions, the end of the first connecting portion is provided with a first screw hole, the lower end of the base is provided with a plurality of first connecting plates, one first connecting plate corresponds to one first connecting portion, the first connecting plate is L-shaped, the first connecting plate and the first screw hole are connected through bolts, and the adjacent two first connecting plates form part of the avoiding channel.

14. The mobile pump station of claim 9, wherein, The base has a support plate, the support plate has an inclined portion and a horizontal portion, the inclined portion extends upwardly and inclinedly to the direction of the water inlet of the water pump, and the horizontal portion is located at the top end of the inclined portion and extends horizontally to support the limiting support.

15. The mobile pump station of claim 14, wherein, The base is provided with a first connecting plate towards the water inlet side of the pump shell, and a reinforcing rib is arranged between the inclined portion, the horizontal portion and the first connecting plate.

16. The mobile pump station of claim 9, wherein, Further comprising a machine cover, the machine cover is rotatably arranged on the base plate and used for covering the water pump, a window is arranged at the position corresponding to the front of the pulley, and a cover plate for covering the window is arranged at the window.

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