A rescue vehicle and a rescue vehicle compartment
By improving the lifting and tilting mechanism of the emergency rescue vehicle, the problems of vehicle height and hose stacking were solved, enabling convenient personnel movement and efficient hose laying operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN QIAOLONG EMERGENCY EQUIP CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-21
Smart Images

Figure CN224528799U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of emergency rescue equipment technology, specifically to a rescue vehicle's cargo compartment and the rescue vehicle itself. Background Technology
[0002] In emergency rescue operations (such as forest fire fighting), long-distance water supply is required, which necessitates long water supply hoses. During use, these hoses need to be laid out and stored, thus requiring rescue vehicles for hose laying.
[0003] Currently, the height of the rescue vehicle's cargo compartment is quite high, making it extremely inconvenient for staff to get in and out. Furthermore, if the hoses inside the cargo compartment are not stacked neatly, the rescue vehicle may accidentally pull out all the hoses during the hose laying process, thus failing to achieve the purpose of hose laying. Utility Model Content
[0004] Therefore, there is a need for a type of emergency vehicle body and an emergency vehicle to solve the technical problems of the current emergency vehicle body being too high, making it extremely inconvenient for staff to get in and out of the body; and the emergency vehicle sometimes pulling out all the hoses when laying them out if the hoses are not stacked neatly inside the body, thus failing to achieve the purpose of laying the hoses.
[0005] To achieve the above objectives, the inventors have provided a cargo compartment for a rescue vehicle, comprising a body, a door, a lifting mechanism, and a first tilting mechanism;
[0006] The cargo box is mounted on the chassis structure of the emergency vehicle, and the cargo door is located on one side of the cargo box and is hinged to the cargo box.
[0007] The lifting mechanism is installed inside the compartment, and the compartment door is movably connected to the lifting mechanism. The lifting mechanism is used to drive the compartment door to rise or fall.
[0008] The lifting mechanism includes a lifting drive component, a lifting connection component, and a sliding assembly;
[0009] One end of the lifting drive component is connected to the compartment body, the other end of the lifting drive component is connected to one end of the lifting connection component, the compartment door is connected to the other end of the lifting connection component, and the lifting connection component is slidably connected to the inner wall of the compartment body through the sliding assembly;
[0010] The sliding assembly includes a first mounting base, a slide rail, at least four first pulleys and at least two second pulleys. The slide rail is disposed on the inner wall of the compartment, and the first mounting base is mounted on the lifting connection component.
[0011] At least four first pulleys are respectively disposed on the left and right sides of the first mounting base, at least four first pulleys are respectively symmetrically disposed, at least four first pulleys are respectively connected to the first mounting base, and at least four first pulleys are respectively engaged with the bottom surface of the slide rail, for supporting the lifting connecting component to slide back and forth along the height direction of the box body;
[0012] At least two second pulleys are disposed on the side of the first mounting base near the slide rail, at least two second pulleys are connected to the first mounting base, and at least two second pulleys cooperate with the side of the slide rail to prevent the lifting connection component from shifting; at least four first pulleys and at least two second pulleys cooperate with the slide rail for sliding.
[0013] One end of the first flipping mechanism is connected to the lifting connection component, and the other end of the first flipping mechanism is connected to the compartment door. The first flipping mechanism is used to flip the compartment door to open or close the compartment door.
[0014] As a preferred structure of this utility model, the compartment door includes an upward-opening door and a downward-opening door;
[0015] The upward-opening door and the downward-opening door are arranged opposite each other along the height direction of the compartment. The upward-opening door is located above the downward-opening door. The upward-opening door is hinged to the top of the compartment and is used to open upward.
[0016] The downward-opening door is movably connected to the lifting connecting component, and the downward-opening door is used to open downwards.
[0017] As a preferred structure of this utility model, the cargo compartment of the rescue vehicle further includes a second tilting mechanism. One end of the second tilting mechanism is connected to the cargo compartment, and the other end of the second tilting mechanism is connected to the upward tilting door. The second tilting mechanism is used to tilt the upward tilting door to open or close the upward tilting door.
[0018] As a preferred structure of this utility model, there are two lifting mechanisms, which are respectively arranged inside the compartment on both sides of the width direction of the compartment;
[0019] There are two first flipping mechanisms, and one end of each of the two first flipping mechanisms is connected to one of the two lifting mechanisms respectively.
[0020] As a preferred structure of this utility model, the cargo compartment of the rescue vehicle also includes two support frames, which are respectively arranged on the left and right sides of the compartment near the lifting mechanism, and the slide rail is arranged on the support frames.
[0021] As a preferred structure of this utility model, the cargo compartment of the rescue vehicle also includes a handrail, which is disposed on the body of the compartment near the lifting mechanism and is fixedly connected to the body of the compartment.
[0022] As a preferred structure of this utility model, the cargo compartment of the rescue vehicle further includes two fixed frames. The two fixed frames are both disposed between the lifting connecting parts of the two lifting mechanisms. The two fixed frames are spaced apart and a through groove is formed between the two fixed frames. The two fixed frames are fixedly connected to the lifting connecting parts of the two lifting mechanisms.
[0023] The advantages of the above technical solution, which differs from the prior art, are as follows: In operation, the cargo compartment of the emergency vehicle of this utility model first lowers the compartment door via a lifting mechanism, reducing the height between the door and the ground. During the lifting process, at least four first pulleys engage with the bottom surface of the slide rail to support the lifting connecting component as it slides back and forth along the height of the compartment, ensuring smooth movement of the lifting connecting component along the slide rail. The at least four first pulleys distribute the workload, reducing the risk of failure. Furthermore, at least two second pulleys engage with the side of the slide rail to prevent the lifting connecting component from shifting along the width of the compartment. With at least two second pulleys pressed against the side of the slide rail, if the lifting connecting component is subjected to lateral force (such as a shift in the center of gravity of the lifting connecting component), the at least two second pulleys can form symmetrical support. Through the rolling contact between the second pulleys and the side of the slide rail, the lateral force is converted into rolling friction, thereby counteracting the tendency of the lifting connecting component to shift along the width of the compartment and ensuring stable operation of the lifting connecting component. At least four first pulleys and at least two second pulleys cooperate with the slide rail for sliding, thereby improving the stability and continuity of the sliding of the lifting connection component. Then, the first flipping mechanism flips the door outwards, opening it. This lowers the height between the door and the ground, and the door can also be used as a platform for workers to use as a step for getting on and off the vehicle, facilitating their access. Furthermore, the lifting mechanism allows for adjustment of the door's vertical position and opening / closing position during the laying of water supply hoses, preventing the hoses inside the vehicle from being completely pulled out, thus enabling better hose laying by the rescue vehicle.
[0024] To achieve the above objectives, the inventor provides a rescue vehicle, comprising:
[0025] Chassis structure;
[0026] The cargo compartment of the emergency vehicle as described in any of the above-mentioned inventors is mounted on the frame structure;
[0027] And a hose reeling device, which is installed on the top of the rescue vehicle, for retrieving the hose.
[0028] As a preferred embodiment of this invention, the hose reeling device includes a traction mechanism, which is located on the top of the carriage and is used to reel in the hose.
[0029] As a preferred structure of this utility model, the tube receiving device further includes a translation mechanism and a first driving mechanism;
[0030] The translation mechanism is located on the top of the carriage and is connected to the carriage.
[0031] The traction mechanism is located above the translation mechanism, and the traction mechanism is slidably connected to the translation mechanism. The traction mechanism is used to retrieve the hose, and the translation mechanism is used to drive the traction mechanism to move left and right, thereby driving the hose on the traction mechanism to move left and right.
[0032] The first driving mechanism is connected to the translation mechanism, and the first driving mechanism is used to provide driving force to the translation mechanism.
[0033] As a preferred structure of this utility model, the translation mechanism includes a translation base and a lead screw assembly;
[0034] The translation base is installed on the top of the cargo compartment of the rescue vehicle;
[0035] The first drive mechanism is mounted on the translation base, the lead screw assembly is mounted on the translation base, and the first drive mechanism is connected to the lead screw assembly in a transmission connection.
[0036] The traction mechanism is connected to the lead screw assembly.
[0037] As a preferred structure of this utility model, the traction mechanism includes a tube base, and the tube base is provided with a fixing groove;
[0038] The lead screw assembly includes a lead screw and a nut. The lead screw is mounted on the translation base, and the nut is mounted on the lead screw. The size of the nut is adapted to the size of the fixing groove, and the nut is engaged with the fixing groove.
[0039] As a preferred structure of this utility model, the traction mechanism includes a tube base, a first transmission mechanism, a first conveying mechanism, a second transmission mechanism, a second conveying mechanism, and a third transmission mechanism.
[0040] The first conveying mechanism, the first transport mechanism, the second conveying mechanism, the second transport mechanism, and the third conveying mechanism are arranged sequentially on the tube base.
[0041] The first conveying mechanism is used to convey the hose, the second conveying mechanism is used to convey the hose, the third conveying mechanism is used to convey the hose.
[0042] As a preferred embodiment of this utility model, the first conveying mechanism, the second conveying mechanism, and the third conveying mechanism each include at least two guide rollers and at least two guide plates, wherein the at least two guide rollers and at least two guide plates are respectively disposed on the tube base; or
[0043] The first conveying mechanism and the third conveying mechanism each include at least two guide rollers and at least two guide plates, and the second conveying mechanism includes at least two guide plates. The at least two guide rollers and at least two guide plates are respectively disposed on the tube base.
[0044] As a preferred structure of this utility model, the first conveying mechanism and the second conveying mechanism each include a power element, a driving roller and a driven roller, the power element is drivenly connected to the driving roller, and the driving roller is drivenly connected to the driven roller.
[0045] As a preferred structure of this utility model, the traction mechanism further includes a first pressing mechanism and a second pressing mechanism;
[0046] A first gap is provided between the first pressing mechanism and the first conveying mechanism for the passage of the hose. The first pressing mechanism and the first conveying mechanism cooperate with each other to flatten the hose and squeeze out the water inside the hose.
[0047] A second gap is provided between the second pressing mechanism and the second conveying mechanism for the passage of the hose. The second pressing mechanism and the second conveying mechanism cooperate with each other to flatten the hose and squeeze out the water inside the hose.
[0048] As a preferred structure of this utility model, the first pressing mechanism and the second pressing mechanism each include a swing arm, a lifting member and a pressing roller.
[0049] The swing arm is mounted on the tube base, and the pressure roller is mounted on the swing arm;
[0050] One end of the lifting member is connected to the base of the fabric tube, and the other end of the lifting member is connected to the swing arm. The lifting member is used to lift or lower the pressure roller.
[0051] The advantages of the above technical solution, which differ from the existing technology, are as follows: In operation, the emergency vehicle of this utility model first lowers the door via a lifting mechanism, reducing the height between the door and the ground. During the lifting process, at least four first pulleys engage with the bottom surface of the slide rail to support the lifting connecting component as it slides back and forth along the height of the vehicle body, ensuring smooth movement of the lifting connecting component along the slide rail. The at least four first pulleys distribute the workload, reducing the risk of failure. Furthermore, at least two second pulleys engage with the side of the slide rail to prevent the lifting connecting component from shifting along the width of the vehicle body. With at least two second pulleys in close contact with the side of the slide rail, if the lifting connecting component is subjected to lateral force (such as a shift in the center of gravity of the lifting connecting component), the at least two second pulleys can form symmetrical support. Through the rolling contact between the second pulleys and the side of the slide rail, the lateral force is converted into rolling friction, thereby counteracting the tendency of the lifting connecting component to shift along the width of the vehicle body and ensuring stable operation of the lifting connecting component. At least four first pulleys and at least two second pulleys cooperate with the slide rail for sliding, thereby improving the stability and continuity of the sliding of the lifting connection component. Then, the first flipping mechanism flips the door outwards, opening it. This lowers the height between the door and the ground, and the door can also be used as a platform for workers to use as a step for getting on and off the vehicle, facilitating their access. Furthermore, the lifting mechanism allows for adjustment of the door's vertical position and opening / closing position during the laying of water supply hoses, preventing the hoses inside the vehicle from being completely pulled out, thus enabling better hose laying by the rescue vehicle.
[0052] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description
[0053] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.
[0054] In the accompanying drawings of the instruction manual:
[0055] Figure 1 This is a schematic diagram of the structure of the emergency rescue vehicle described in the specific implementation method;
[0056] Figure 2 This is a front view of the rescue vehicle described in the specific implementation method;
[0057] Figure 3This is one of the partial structural schematic diagrams of the carriage described in the specific embodiment;
[0058] Figure 4 This is a schematic diagram of the structure of the rear of the carriage and the lifting mechanism described in the specific implementation method;
[0059] Figure 5 This is a partial top view of the rescue vehicle described in the specific implementation method;
[0060] Figure 6 This is one of the structural schematic diagrams of the tube receiving device described in a specific embodiment;
[0061] Figure 7 This is a second schematic diagram of the structure of the pipe-receiving device described in a specific embodiment;
[0062] Figure 8 This is a front view of the tube receiving device described in the specific embodiment;
[0063] Figure 9 This is a partially enlarged schematic diagram of the cargo compartment of the rescue vehicle described in the specific implementation method;
[0064] Figure 10 The third schematic diagram of the pipe receiving device described in the specific implementation method.
[0065] The reference numerals used in the above figures are explained as follows:
[0066] 1. Chassis structure,
[0067] 2. Train carriage,
[0068] 21. Body,
[0069] 211. Support frame,
[0070] 212. Handrail
[0071] 213. Fixture,
[0072] 214. Through groove,
[0073] 22. Side door,
[0074] 221. Upward-opening door.
[0075] 222. Downward-opening door; 3. Lifting mechanism;
[0076] 31. Lifting drive components,
[0077] 32. Lifting connecting components,
[0078] 33. Sliding component
[0079] 331. Slide rail,
[0080] 332. First pulley,
[0081] 333. Second pulley,
[0082] 334. First mounting base; 4. Pipe receiving device;
[0083] 41. Traction mechanism,
[0084] 411. Pipe base,
[0085] 4111, Fixing groove,
[0086] 412. First conveying mechanism; 4121. Guide roller;
[0087] 4122. Guide plate
[0088] 413. First conveying mechanism; 4131. Drive roller;
[0089] 4132. Driven roller,
[0090] 414. Second transmission mechanism,
[0091] 415. Second conveying mechanism,
[0092] 416. The third transmission mechanism,
[0093] 417. First clamping mechanism; 4171. Swing arm;
[0094] 4172. Lifting components,
[0095] 4173. Pressure roller,
[0096] 418. Second clamping mechanism,
[0097] 42. Translation mechanism,
[0098] 421. Translation base,
[0099] 422. Lead screw assembly,
[0100] 4221. Screw,
[0101] 4222, Nut,
[0102] 43. First drive mechanism,
[0103] 5. First flipping mechanism,
[0104] 6. Second flipping mechanism, Detailed Implementation
[0105] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.
[0106] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least two embodiments of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.
[0107] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.
[0108] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.
[0109] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.
[0110] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.
[0111] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.
[0112] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. These expressions are only for the convenience of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. Furthermore, in this context, it should be understood that when it is mentioned that an element is connected "on" or "below" another element, it can be directly connected not only to the other element "on" or "below," but also indirectly connected to the other element "on" or "below" through an intermediate element.
[0113] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.
[0114] Please see Figures 1 to 10 This embodiment relates to a cargo compartment 2 of a rescue vehicle, comprising:
[0115] The compartment 21 is mounted on the frame structure 1 of the emergency vehicle and is used to house water supply hoses and emergency equipment.
[0116] A door 22 is provided on one side of the compartment 21, and the door 22 is hinged to the compartment 21; preferably, in this embodiment, as... Figures 1 to 5As shown, the door 22 is located at the rear of the compartment 21 to facilitate pipe laying and retraction operations. This arrangement not only facilitates pipe installation but also allows for easy access for personnel.
[0117] The lifting mechanism 3 is located inside the compartment 21. The compartment door 22 is movably connected to the lifting mechanism 3. The lifting mechanism 3 is used to drive the compartment door 22 to rise or fall. It is easy to operate and saves time and effort.
[0118] Furthermore, the lifting mechanism 3 includes a lifting drive component 31, a lifting connecting component 32, and a sliding assembly 33. One end of the lifting drive component 31 is fixedly connected to the compartment 21, and the other end of the lifting drive component 31 is connected to one end of the lifting connecting component 32. The compartment door 22 is connected to the other end of the lifting connecting component 32, and the lifting connecting component 32 is slidably connected to the inner wall of the compartment 21 via the sliding assembly 33. The sliding assembly 33 is provided to improve the stability and continuity of the sliding of the lifting connecting component 32. The lifting drive component 31 is a lifting hydraulic cylinder; in other embodiments, the lifting drive component 31 can also be a pneumatic cylinder or an electric cylinder.
[0119] Furthermore, the sliding assembly 33 includes a first mounting base 334, a slide rail 331, at least four first pulleys 332, and at least two second pulleys 333. The slide rail 331 is fixedly mounted on the inner wall of the compartment 21, and the first mounting base 334 is mounted on the lifting connecting component 32. The at least four first pulleys 332 are respectively disposed on the left and right sides of the first mounting base 334, serving to evenly distribute the load and improve the load-bearing capacity. The at least four first pulleys 332 are symmetrically arranged to improve the stability of the lifting connecting component 32 during lifting. The at least four first pulleys 332 are detachably connected to the first mounting base 334 for easy maintenance. The at least four first pulleys 332 cooperate with the bottom surface of the slide rail 331 to support the lifting connecting component 32 to slide back and forth along the height direction of the compartment 21, ensuring that the lifting connecting component 32 moves smoothly along the slide rail 331. The at least four first pulleys 332 distribute the workload, reduce the risk of failure, and facilitate maintenance and repair. In this embodiment, the number of first pulleys 332 is not limited and can be set according to the actual situation. In this embodiment, there are four first pulleys 332, one on each of the top, bottom, left and right sides.
[0120] At least two of the second pulleys 333 are disposed on the side of the first mounting base 334 near the slide rail 331. At least two of the second pulleys 333 are connected to the first mounting base 334. At least two of the second pulleys 333 cooperate with the side of the slide rail 331 to prevent the lifting connecting component 32 from shifting along the width of the carriage 2. At least four of the first pulleys 332 and at least two of the second pulleys 333 cooperate with the slide rail 331 to slide, thereby improving the stability and continuity of the sliding of the lifting connecting component 32. At least two second pulleys 333 are closely attached to the side of the slide rail 331. When the lifting connecting component 32 moves up and down, if it is subjected to a lateral force (such as the center of gravity of the lifting connecting component 32 shifting), the at least two second pulleys 333 can form symmetrical support. Through the rolling contact between the second pulleys 333 and the side of the slide rail 331, the lateral force is converted into the rolling friction force of the second pulleys 333, thereby counteracting the tendency of the lifting connecting component 32 to shift along the width of the carriage 2, ensuring the stable operation of the lifting connecting component 32. It should be noted that in this embodiment, the number of second pulleys 333 is not limited and can be set according to the actual situation. In this embodiment, there are two second pulleys 333, one at the top and one at the bottom.
[0121] The system includes a first tilting mechanism 5, one end of which is connected to the lifting mechanism 3, and the other end of which is connected to the door 22. The first tilting mechanism 5 is used to tilt the door 22 to open or close it. The lifting mechanism 3 drives the door 22 to descend, reducing the height between the door 22 and the ground. Then, the first tilting mechanism 5 tilts the door 22 outwards, opening it. This lowers the height between the door 22 and the ground and also allows the door 22 to serve as a platform for workers to get on and off the vehicle 2. Lowering the door 22 also prevents the water supply hoses inside the vehicle 21 from being fully pulled out, facilitating better hose deployment by the emergency vehicle. Specifically, in this embodiment, the first tilting mechanism 5 is a tilting cylinder. There are two first tilting mechanisms 5, each located on one side of the width of the vehicle 21. The lifting drive component 31 drives the lifting connection component 32, the first tilting mechanism 5, and the tilting door 222 to move up and down.
[0122] Specifically, in this embodiment, during operation, the cargo compartment 2 of the rescue vehicle first lowers the compartment door 22 via the lifting mechanism 3, reducing the height between the compartment door 22 and the ground. During the lifting process, at least four first pulleys 332 respectively engage with the bottom surface of the slide rail 331 to support the lifting connecting component 32 as it slides back and forth along the height direction of the cargo compartment 21, ensuring that the lifting connecting component 32 moves smoothly along the slide rail 331. The at least four first pulleys 332 distribute the workload and reduce the risk of failure. Furthermore, at least two second pulleys 333 engage with the side surfaces of the slide rail 331. To prevent the lifting connecting component 32 from shifting along the width of the carriage 2, at least two second pulleys 333 are tightly attached to the side of the slide rail 331. When the lifting connecting component 32 is raised or lowered, if it is subjected to a lateral force (such as a shift in the center of gravity of the lifting connecting component 32), the at least two second pulleys 333 can form symmetrical support. Through the rolling contact between the second pulleys 333 and the side of the slide rail 331, the lateral force is converted into the rolling friction force of the second pulleys 333, thereby counteracting the tendency of the lifting connecting component 32 to shift along the width of the carriage 2 and ensuring the stable operation of the lifting connecting component 32. At least four first pulleys 332 and at least two second pulleys 333 cooperate with the slide rail 331 for sliding, so as to improve the stability and continuity of the sliding of the lifting connecting component 32. Next, the first flipping mechanism 5 flips the door 22 outward, opening the door 22. This lowers the height between the door 22 and the ground, and the door 22 can also be used as a carrying platform for workers to use as a step to get on and off the vehicle 2, making it convenient for workers to get on and off the vehicle 2. Furthermore, with the lifting mechanism 3, the vertical position and opening and closing position of the door 22 can be adjusted when laying the water supply hose, so that the water supply hose can be laid smoothly and evenly, preventing the water supply hose inside the vehicle 21 from being completely pulled out, so that the rescue vehicle can lay the hose better.
[0123] Optionally, in some embodiments, such as Figures 1 to 5As shown, the compartment door 22 includes an upward-opening door 221 and a downward-opening door 222. The upward-opening door 221 and the downward-opening door 222 are arranged opposite each other along the height direction of the compartment body 21. The upward-opening door 221 is located above the downward-opening door 222. The upward-opening door 221 is hinged to the top of the compartment body 21. The upward-opening door 221 is used to open upwards, that is, the upward-opening door 221 and the downward-opening door 222 open vertically, which facilitates operation. The downward-opening door 222 is movably connected to the lifting connecting component 32 of the lifting mechanism 3. The downward-opening door 222 is used to open downwards. During operation, the lifting mechanism 3 first drives the tilting door 222 to descend, reducing the height between the tilting door 222 and the ground. Then, the first flipping mechanism 5 flips the tilting door 222 outward, opening the compartment door 22. At this time, the height between the tilting door 222 and the ground is reduced, and the tilting door 222 can also be used as a carrying platform for workers to use as a step to get on and off the compartment 2, making it convenient for workers to get on and off the compartment 2. With the lifting mechanism 3, the vertical position and opening and closing position of the tilting door 222 can also be adjusted when laying the water supply hose, so that the water supply hose can be laid flat and smoothly, preventing the water supply hose inside the compartment 21 from being completely pulled out, so that the rescue vehicle can lay the hose better.
[0124] Optionally, in some embodiments, such as Figures 1 to 5 As shown, the cargo compartment 2 of the rescue vehicle also includes a second tilting mechanism 6. One end of the second tilting mechanism 6 is connected to the cargo body 21, and the other end is connected to the upward-opening door 221. The second tilting mechanism 6 is used to tilt the upward-opening door 221 to open or close it. Opening the upward-opening door 221 by tilting it upwards using the second tilting mechanism 6 is simple and time-saving. Specifically, in this embodiment, the second tilting mechanism 6 is a tilting cylinder, and there are two second tilting mechanisms 6, which are respectively arranged on both sides of the cargo body 21 in the width direction.
[0125] Optionally, in some embodiments, such as Figures 1 to 5 As shown, there are two lifting mechanisms 3, which are respectively located inside the compartment 21 on both sides of the width direction of the compartment 21; there are two first tilting mechanisms 5, one end of each of the two first tilting mechanisms 5 is respectively connected to the two lifting mechanisms 3. The stability of the operation is improved by providing two lifting mechanisms 3 and two first tilting mechanisms 5.
[0126] Specifically, during operation, the lifting drive component 31 first drives the lifting connecting component 32, the first tilting mechanism 5, and the tilting door 222 to descend, reducing the height between the tilting door 222 and the ground. Then, the first tilting mechanism 5 tilts the tilting door 222 outward, opening the compartment door 22. This lowers the height between the tilting door 222 and the ground, allowing it to serve as a platform for workers to use as a step for getting on and off the compartment 2. Furthermore, the lifting mechanism 3 allows for adjustment of the tilting door 222's vertical and horizontal positions and its opening / closing position during water supply hose installation, preventing the water supply hose inside the compartment 21 from being completely pulled out, thus facilitating better hose laying by the rescue vehicle. In this embodiment, the lifting drive component 31 is a lifting cylinder, and the lifting connecting component 32 is a lifting linkage.
[0127] Optionally, in some embodiments, such as Figures 1 to 5 As shown, the cargo compartment 2 of the rescue vehicle also includes two support frames 211. The two support frames 211 are respectively arranged on the left and right sides of the rear end of the compartment 21 near the lifting mechanism 3. The two support frames 211 provide support for the entire compartment 21, improving the stability of the compartment 21. The slide rail 331 is fixedly arranged on the support frame 211, which facilitates the installation and fixation of the slide rail 331.
[0128] Optionally, in some embodiments, such as Figures 1 to 5 As shown, the vehicle compartment 2 of the rescue vehicle also includes a handrail 212. The handrail 212 is located on the rear end of the compartment 21 near the lifting mechanism 3. The handrail 212 is fixedly connected to the compartment 21. There are two handrails 212. By providing handrails 212 on both sides of the rear end of the compartment 21, it is convenient for people to get on and off the vehicle.
[0129] Optionally, in some embodiments, such as Figures 1 to 5 As shown, the cargo compartment 2 of the rescue vehicle also includes two fixing frames 213. Both fixing frames 213 are positioned between the lifting connecting components 32 of the two lifting mechanisms 3, spaced apart, forming a through groove 214 between them. Both fixing frames 213 are fixedly connected to the lifting connecting components 32 of the two lifting mechanisms 3. The presence of two fixing frames 213 improves the stability of the lifting mechanism 3 during lifting and prevents twisting during the lifting process. The through groove 214 between the two fixing frames 213 allows the oil pipes of the lifting cylinder of the lifting drive component 31 or other oil pipes on the vehicle to pass through, preventing leakage and providing both protection and aesthetic appeal.
[0130] like Figures 1 to 10As shown, to achieve the above objectives, the inventor provides a rescue vehicle, wherein the rescue vehicle in this embodiment is mainly used for long-distance water supply in emergency rescue operations. The rescue vehicle includes:
[0131] Frame structure 1; As the frame structure of the whole vehicle, the frame structure 1 is the base of the whole vehicle. It supports and connects the various assemblies of the whole vehicle, keeps the assemblies in a relatively correct position, and bears various loads inside and outside the vehicle.
[0132] The rescue vehicle has a cargo compartment 2, which is mounted on the frame structure 1.
[0133] And a hose reeling device 4, which is installed on the top of the emergency vehicle, is used to retract the hose; by providing the hose reeling device 4, the water supply hose can be automatically retracted, which is simple to operate, saves time and effort, and improves work efficiency.
[0134] Optionally, in some embodiments, such as Figures 1 to 10 As shown, the hose reeling device 4 includes a traction mechanism 41, which is located on the top of the carriage 2. The traction mechanism 41 is used to reel in the hose. The hose can be automatically reeled in by the traction mechanism 41, which is simple to operate, saves time and effort, and improves work efficiency.
[0135] Optionally, in some embodiments, such as Figures 1 to 10 As shown, the hose reeling device 4 further includes a translation mechanism 42 and a first drive mechanism 43. The translation mechanism 42 is disposed on the top of the carriage 2 and connected to the carriage 2. The traction mechanism 41 is disposed above the translation mechanism 42 and is slidably connected to the translation mechanism 42. The traction mechanism 41 is used to reel in the hose, and the translation mechanism 42 is used to drive the traction mechanism 41 to move left and right, thereby driving the hose on the traction mechanism 41 to move left and right. The first drive mechanism 43 is connected to the translation mechanism 42 and is used to provide driving force to the translation mechanism 42. Specifically, during hose reeling, the translation mechanism 42 moves left and right under the drive of the first drive mechanism 43, driving the traction mechanism 41 to move left and right, thereby driving the hose on the traction mechanism 41 to move left and right. The first drive mechanism 43 is a motor.
[0136] Specifically, in this embodiment, such as Figures 1 to 10As shown, during the hose reeling process, driven by the first drive mechanism 43, the translation mechanism 42 moves the traction mechanism 41 to the left side of the carriage 2, thereby causing the hose on the traction mechanism 41 to move to the left side of the carriage 2, so that the water supply hose can fall into the left side of the carriage 2 of the rescue vehicle in an orderly manner. When the left side is full, the translation mechanism 42 drives the traction mechanism 41 to move to the right side, so that the water supply hose falls into the middle or right side of the carriage 2 of the rescue vehicle in an orderly manner, thereby realizing the automatic and reasonable placement of the water supply hose into the designated position. The whole process is simple to operate, saves time and effort, and improves work efficiency.
[0137] Optionally, in some embodiments, such as Figures 1 to 10 As shown, the translation mechanism 42 includes a translation base 421 and a lead screw assembly 422. The translation base 421 is mounted on the top of the cargo compartment 2 of the rescue vehicle. The first drive mechanism 43 is mounted on the translation base 421, and the lead screw assembly 422 is mounted on the translation base 421. The first drive mechanism 43 is pulsatorically connected to the lead screw assembly 422. The traction mechanism 41 is connected to the lead screw assembly 422. Specifically, during hose retraction, the lead screw assembly 422 moves left and right under the drive of the first drive mechanism 43, driving the traction mechanism 41 to move left and right, thereby driving the hose on the traction mechanism 41 to move left and right.
[0138] Specifically, in this embodiment, such as Figures 1 to 10 As shown, during hose reeling, driven by the first drive mechanism 43, the screw assembly 422 moves the traction mechanism 41 to the left side of the compartment 2, thereby causing the hose on the traction mechanism 41 to move to the left side of the compartment 2, allowing the water supply hose to fall orderly into the left side of the compartment 2 of the rescue vehicle. When the left side is full, similarly, the screw assembly 422 drives the traction mechanism 41 to move to the right side, causing the water supply hose to fall orderly into the middle or right side of the compartment 2 of the rescue vehicle, thus achieving automatic and reasonable placement of the water supply hose into the designated position. The whole process is simple to operate, saves time and effort, and improves work efficiency. Specifically, in this embodiment, the screw assembly 422 is a ball screw.
[0139] Optionally, in some embodiments, such as Figures 1 to 10As shown, the traction mechanism 41 includes a pipe-laying base 411 with a fixing groove 4111. The screw assembly 422 includes a screw 4221 and a nut 4222. The screw 4221 is mounted on the translation base 421, and the nut 4222 is mounted on the screw 4221. The size of the nut 4222 matches the size of the fixing groove 4111, and the nut 4222 engages with the fixing groove 4111 for fixation. Specifically, during pipe retraction, the screw assembly 422, driven by the first drive mechanism 43, causes the nut 4222 to move left and right on the screw 4221, which in turn moves the traction mechanism 41 left and right, thereby moving the hose on the traction mechanism 41 left and right. This automatically and efficiently places the water supply hose into the designated position and neatly positions it inside the carriage 2. The entire process is simple to operate, saves time and effort, and improves work efficiency. It should be noted that the structure of the translation mechanism 42 in this embodiment is not limited to this, and those skilled in the art can select other suitable translation mechanisms 42 based on the teachings of this embodiment.
[0140] Optionally, in some embodiments, such as Figures 1 to 10 As shown, the traction mechanism 41 includes a pipe laying base 411, a first conveying mechanism 412, a first conveying mechanism 413, a second conveying mechanism 414, a second conveying mechanism 415, and a third conveying mechanism 416; the first conveying mechanism 412, the first conveying mechanism 413, the second conveying mechanism 414, the second conveying mechanism 415, and the third conveying mechanism 416 are respectively arranged sequentially on the pipe laying base 411; the first conveying mechanism 412 is used to convey the hose, the first conveying mechanism 413 is used to convey the hose, the second conveying mechanism 414 is used to convey the hose, the second conveying mechanism 415 is used to convey the hose, and the third conveying mechanism 416 is used to convey the hose.
[0141] Specifically, in this embodiment, such as Figures 1 to 10As shown, the hose is retracted by the operation of the first conveying mechanism 413 and the second conveying mechanism 415. A first conveying mechanism 412 is located at the front end of the first conveying mechanism 413 to convey the hose, reducing resistance during the initial conveying process, facilitating hose retrieval, and improving work efficiency. A second conveying mechanism 414 is located between the first conveying mechanism 413 and the second conveying mechanism 415 to convey the hose, reducing resistance during the middle conveying process, facilitating hose retrieval, and improving work efficiency. A third conveying mechanism 416 is located at the rear end of the second conveying mechanism 415 to convey the hose, reducing resistance during the rear conveying process, facilitating hose retrieval, and improving work efficiency. Finally, the hose is conveyed into the compartment 2 of the rescue vehicle, saving time and effort, simplifying operation, and improving work efficiency.
[0142] Optionally, in some embodiments, such as Figures 1 to 10 As shown, the first conveying mechanism 412, the second conveying mechanism 414, and the third conveying mechanism 416 each include at least two guide rollers 4121 and at least two guide plates 4122, which are respectively disposed on the hose base 411. The at least two guide rollers 4121 and at least two guide plates 4122 serve to reduce resistance during the conveying process. The guide plates 4122 prevent the hose from sinking during conveying, thus reducing resistance. It should be noted that in this embodiment, the number of guide rollers 4121 and guide plates 4122 is not limited; it can be one, two, or three, etc.
[0143] Specifically, in this embodiment, such as Figure 9 As shown, the first conveying mechanism 412 and the third conveying mechanism 416 each include at least two guide rollers 4121 and at least two guide plates 4122, and the second conveying mechanism 414 includes at least two guide plates 4122. The at least two guide rollers 4121 and the at least two guide plates 4122 are respectively disposed on the tube base 411. That is, in this embodiment, a guide roller 4121 is provided at both the front and rear ends of the tube base 411, and at least two guide plates 4122 are provided between the front and rear guide rollers 4121. The at least two guide rollers 4121 and the at least two guide plates 4122 play a role in reducing the resistance during the conveying process. By providing guide plates 4122, the hose is prevented from sinking during the conveying process, thus reducing resistance.
[0144] Optionally, in some embodiments, such as Figures 1 to 10As shown, both the first conveying mechanism 413 and the second conveying mechanism 415 include a power element, a driving roller 4131, and a driven roller 4132. The power element is driven by the driving roller 4131, and the driving roller 4131 is driven by the driven roller 4132. Specifically, in this embodiment, the driving roller 4131 and the driven roller 4132 are connected by a chain drive. In other embodiments, the driving roller 4131 and the driven roller 4132 can also be connected by a belt drive or a gear drive, etc. Specifically, the driving roller 4131, driven by the power element, drives the driven roller 4132 to rotate, thereby driving the hose to be conveyed into the carriage 2. The operation is simple, time-saving, labor-saving, and improves work efficiency. The power element can be a motor or electric motor.
[0145] Optionally, in some embodiments, such as Figures 1 to 10 As shown, the traction mechanism 41 further includes a first pressing mechanism 417 and a second pressing mechanism 418. A first gap is provided between the first pressing mechanism 417 and the first conveying mechanism 413 for the passage of the hose. The first pressing mechanism 417 and the first conveying mechanism 413 cooperate to flatten the hose and squeeze out the water inside the hose. Specifically, in this embodiment, the hose passes through the gap between the first pressing mechanism 417 and the first conveying mechanism 413. The hose is moved by the friction between the first conveying mechanism 413 and the first pressing mechanism 417, thereby conveying the hose into the carriage 2. The first pressing machine can press the hose, and the first pressing mechanism 417 and the first conveying mechanism 413 form a squeezing force to flatten the hose and squeeze out the water inside the hose. There is no need for manual drainage, flattening, and sorting of the water inside the hose, saving time and effort and improving work efficiency.
[0146] Furthermore, a second gap is provided between the second pressing mechanism 418 and the second conveying mechanism 415 for the passage of the hose. The second pressing mechanism 418 and the second conveying mechanism 415 cooperate to flatten the hose and squeeze out the water inside. It should be noted that the working principle between the second pressing mechanism 418 and the second conveying mechanism 415 is the same as that between the first pressing mechanism 417 and the first conveying mechanism 413, and will not be repeated here.
[0147] Specifically, in this embodiment, such as Figures 1 to 10As shown, both the first clamping mechanism 417 and the second clamping mechanism 418 include a swing arm 4171, a lifting member 4172, and a clamping roller 4173. The swing arm 4171 is mounted on the hose base 411, and the clamping roller 4173 is mounted on the swing arm 4171. One end of the lifting member 4172 is connected to the hose base 411, and the other end is connected to the swing arm 4171. The lifting member 4172 is used to lift or lower the clamping roller 4173. The size of the gap can be adjusted and controlled by the lifting member 4172. The lifting member 4172 can be a hydraulic cylinder; in other embodiments, it can also be a pneumatic cylinder or an electric cylinder. Specifically, the lifting member 4172 drives the clamping roller 4173 to press downwards or lifts it upwards, allowing the hose connector to pass through. It should be noted that the structure of the first pressing mechanism 417 and the second pressing mechanism 418 in this embodiment is not limited to this. Those skilled in the art can select other suitable first pressing mechanism 417 and second pressing mechanism 418 based on the teachings of this embodiment.
[0148] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.
Claims
1. A cargo compartment for a rescue vehicle, characterized in that: Includes the body, doors, lifting mechanism, and first tilting mechanism; The cargo box is mounted on the chassis structure of the emergency vehicle, and the cargo door is located on one side of the cargo box and is hinged to the cargo box. The lifting mechanism is installed inside the compartment, and the compartment door is movably connected to the lifting mechanism. The lifting mechanism is used to drive the compartment door to rise or fall. The lifting mechanism includes a lifting drive component, a lifting connection component, and a sliding assembly; One end of the lifting drive component is connected to the compartment body, the other end of the lifting drive component is connected to one end of the lifting connection component, the compartment door is connected to the other end of the lifting connection component, and the lifting connection component is slidably connected to the inner wall of the compartment body through the sliding assembly; The sliding assembly includes a first mounting base, a slide rail, at least four first pulleys and at least two second pulleys. The slide rail is disposed on the inner wall of the compartment, and the first mounting base is mounted on the lifting connection component. At least four first pulleys are respectively disposed on the left and right sides of the first mounting base, at least four first pulleys are respectively symmetrically disposed, at least four first pulleys are respectively connected to the first mounting base, and at least four first pulleys are respectively engaged with the bottom surface of the slide rail, for supporting the lifting connecting component to slide back and forth along the height direction of the box body; At least two second pulleys are disposed on the side of the first mounting base near the slide rail, at least two second pulleys are connected to the first mounting base, and at least two second pulleys cooperate with the side of the slide rail to prevent the lifting connection component from shifting; at least four first pulleys and at least two second pulleys cooperate with the slide rail for sliding. One end of the first flipping mechanism is connected to the lifting connection component, and the other end of the first flipping mechanism is connected to the compartment door. The first flipping mechanism is used to flip the compartment door to open or close the compartment door.
2. The cargo compartment of the emergency rescue vehicle according to claim 1, characterized in that: The compartment door includes an upward-opening door and a downward-opening door; The upward-opening door and the downward-opening door are arranged opposite each other along the height direction of the compartment. The upward-opening door is located above the downward-opening door. The upward-opening door is hinged to the top of the compartment and is used to open upward. The downward-opening door is movably connected to the lifting connecting component, and the downward-opening door is used to open downwards.
3. The cargo compartment of the emergency rescue vehicle according to claim 2, characterized in that: The rescue vehicle also includes a second tilting mechanism. One end of the second tilting mechanism is connected to the body of the vehicle, and the other end of the second tilting mechanism is connected to the upward-opening door. The second tilting mechanism is used to tilt the upward-opening door to open or close it.
4. The cargo compartment of the emergency rescue vehicle according to claim 1, characterized in that: There are two lifting mechanisms, which are respectively located inside the compartment on both sides of the width direction of the compartment. There are two first flipping mechanisms, and one end of each of the two first flipping mechanisms is connected to one of the two lifting mechanisms respectively.
5. The cargo compartment of the emergency rescue vehicle according to any one of claims 1 to 4, characterized in that: The rescue vehicle also includes two support frames, which are respectively located on the left and right sides of the body near the lifting mechanism, and the slide rail is mounted on the support frames.
6. The cargo compartment of the emergency rescue vehicle according to any one of claims 1 to 4, characterized in that: The rescue vehicle also includes handrails, which are installed on the body of the vehicle near the lifting mechanism and are fixedly connected to the body.
7. The cargo compartment of the emergency rescue vehicle according to claim 4, characterized in that: The cargo compartment of the rescue vehicle also includes two fixed frames, both of which are disposed between the lifting connecting parts of the two lifting mechanisms. The two fixed frames are spaced apart and form a through groove between them. Both fixed frames are fixedly connected to the lifting connecting parts of the two lifting mechanisms.
8. A rescue vehicle, characterized in that, include: Chassis structure; The cargo compartment of the emergency vehicle as described in any one of claims 1 to 7, wherein the cargo compartment is mounted on the frame structure; And a hose reeling device, which is installed on the top of the rescue vehicle, for retrieving the hose.
9. The emergency rescue vehicle according to claim 8, characterized in that: The hose retrieval device includes a traction mechanism located on the top of the vehicle body, and the traction mechanism is used to retrieve the hose.
10. The emergency rescue vehicle according to claim 9, characterized in that: The tube receiving device also includes a translation mechanism and a first drive mechanism; The translation mechanism is located on the top of the carriage and is connected to the carriage. The traction mechanism is located above the translation mechanism, and the traction mechanism is slidably connected to the translation mechanism. The traction mechanism is used to retrieve the hose, and the translation mechanism is used to drive the traction mechanism to move left and right, thereby driving the hose on the traction mechanism to move left and right. The first driving mechanism is connected to the translation mechanism, and the first driving mechanism is used to provide driving force to the translation mechanism.
11. The emergency rescue vehicle according to claim 10, characterized in that: The translation mechanism includes a translation base and a lead screw assembly; The translation base is installed on the top of the cargo compartment of the rescue vehicle; The first drive mechanism is mounted on the translation base, the lead screw assembly is mounted on the translation base, and the first drive mechanism is connected to the lead screw assembly in a transmission connection. The traction mechanism is connected to the lead screw assembly.
12. The emergency rescue vehicle according to claim 11, characterized in that: The traction mechanism includes a pipe base, and the pipe base is provided with a fixing groove; The lead screw assembly includes a lead screw and a nut. The lead screw is mounted on the translation base, and the nut is mounted on the lead screw. The size of the nut is adapted to the size of the fixing groove, and the nut is engaged with the fixing groove.
13. The emergency rescue vehicle according to claim 9, characterized in that: The traction mechanism includes a pipe base, a first transmission mechanism, a first conveying mechanism, a second transmission mechanism, a second conveying mechanism, and a third transmission mechanism; The first conveying mechanism, the first transport mechanism, the second conveying mechanism, the second transport mechanism, and the third conveying mechanism are arranged sequentially on the tube base. The first conveying mechanism is used to convey the hose, the second conveying mechanism is used to convey the hose, the third conveying mechanism is used to convey the hose.
14. The emergency rescue vehicle according to claim 13, characterized in that: The first, second, and third conveying mechanisms each include at least two guide rollers and at least two guide plates, with the at least two guide rollers and at least two guide plates respectively disposed on the tube base; or The first conveying mechanism and the third conveying mechanism each include at least two guide rollers and at least two guide plates, and the second conveying mechanism includes at least two guide plates. The at least two guide rollers and at least two guide plates are respectively disposed on the tube base.
15. The emergency rescue vehicle according to claim 13, characterized in that: The first conveying mechanism and the second conveying mechanism each include a power element, a drive roller and a driven roller. The power element is drivenly connected to the drive roller, and the drive roller is drivenly connected to the driven roller.
16. The emergency rescue vehicle according to claim 13, characterized in that: The traction mechanism further includes a first clamping mechanism and a second clamping mechanism; A first gap is provided between the first pressing mechanism and the first conveying mechanism for the passage of the hose. The first pressing mechanism and the first conveying mechanism cooperate with each other to flatten the hose and squeeze out the water inside the hose. A second gap is provided between the second pressing mechanism and the second conveying mechanism for the passage of the hose. The second pressing mechanism and the second conveying mechanism cooperate with each other to flatten the hose and squeeze out the water inside the hose.
17. The emergency rescue vehicle according to claim 16, characterized in that: Both the first pressing mechanism and the second pressing mechanism include a swing arm, a lifting component, and a pressing roller; The swing arm is mounted on the tube base, and the pressure roller is mounted on the swing arm; One end of the lifting member is connected to the base of the fabric tube, and the other end of the lifting member is connected to the swing arm. The lifting member is used to lift or lower the pressure roller.