A sand-throwing vehicle and its adjustable sand-throwing arm.
By designing an adjustable sand-throwing arm, the problem of kinetic energy loss caused by the bending of the sand-throwing arm was solved by using an adjustment mechanism and a rigid structure, thus achieving precise sand throwing and increased distance, and improving fire extinguishing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN QIAOLONG EMERGENCY EQUIP CO LTD
- Filing Date
- 2025-04-09
- Publication Date
- 2026-06-30
AI Technical Summary
The sand-throwing arms of existing sand-throwing trucks use flexible hoses, and the degree of curvature changes with the adjustment of the sand outlet. This causes the sand to lose kinetic energy when passing through the curved part, which limits the throwing distance and makes it difficult to throw sand to a distant fire source.
Design a sand-throwing arm with an adjustable throwing nozzle, including a fixed base, a sand-throwing tube arm and an adjustment device. The adjustment mechanism drives the adjustment component to rotate around the hinge point to change the sand-throwing direction. The sand-throwing tube arm maintains a fixed shape. The rigid structure and smooth channel reduce friction and achieve precise throwing.
The increased sand throwing distance enabled precise sand distribution, significantly improving fire extinguishing efficiency and ensuring that the sand was concentrated and thrown in the preset direction, thus reducing kinetic energy loss.
Smart Images
Figure CN224421787U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sand-throwing arm technology, and in particular to a sand-throwing vehicle and its sand-throwing arm with adjustable throwing port. Background Technology
[0002] Currently, in special fire situations where traditional extinguishing agents such as water, foam, or carbon dioxide are unsuitable, the firefighting field has widely adopted large sand-throwing fire trucks as a response strategy. These innovative vehicles directly intervene in the fire source by efficiently throwing sand, which not only greatly enhances firefighting efficiency but also significantly reduces the direct risks faced by firefighters in high-risk environments, building a solid line of defense to protect people's lives and property and maintain social stability.
[0003] The inventor's previous patent application (patent number: 202421921146.5) provides a sand-throwing fire engine and its sand-throwing device. The sand-throwing device includes a sand-throwing machine, a first sand-conveying pipe, a second sand-conveying pipe, and a sand-throwing arm. The sand outlet of the sand-throwing machine is connected to the sand inlet of the first sand-conveying pipe. The first sand-conveying pipe is located below the second sand-conveying pipe. The sand outlet of the first sand-conveying pipe extends into the sand inlet of the second sand-conveying pipe. The outer diameter of the sand outlet of the first sand-conveying pipe is smaller than the inner diameter of the sand inlet of the second sand-conveying pipe, so that a channel for gas circulation is formed between the outer wall of the sand outlet of the first sand-conveying pipe and the inner wall of the sand inlet of the second sand-conveying pipe. The sand-throwing arm is located on or beside the sand-throwing machine, and the second sand-conveying pipe is provided on the sand-throwing arm.
[0004] The above-mentioned patent has the following disadvantages: Since the second sand conveying pipe is a flexible hose with fixed ends and a curved middle section, the degree of curvature changes with the direction of the sand outlet. When the sand passes through the curved section, it will rub against the pipe wall, resulting in a large loss of kinetic energy, which limits the sand throwing distance and makes it difficult to throw the sand to a distant fire source. Utility Model Content
[0005] Therefore, it is necessary to provide a sand-throwing vehicle and an adjustable sand-throwing arm with an adjustable sand-throwing port to solve the problems mentioned in the background technology.
[0006] To achieve the above objectives, the inventor provides a sand-throwing arm with an adjustable throwing port, comprising:
[0007] Fixed base;
[0008] A sand-throwing pipe arm, having a sand-throwing channel, is mounted on the fixed base; and
[0009] An adjusting device includes an adjusting member and an adjusting mechanism. The adjusting member is hinged to the sand-throwing pipe arm and located at the sand outlet of the sand-throwing channel. It is used to adjust the direction in which sand is thrown from the sand outlet of the sand-throwing channel. The adjusting mechanism is connected to the sand-throwing pipe arm and the adjusting member. It is used to rotate the adjusting member around the hinged part, thereby adjusting the direction of sand throwing.
[0010] Furthermore, the adjusting member includes a baffle, a first side plate, and a second side plate. The first side plate and the second side plate are disposed on the left and right ends of the baffle and are located on the same side of the baffle. The baffle, the first side plate, and the second side plate form a sand throwing port. The adjusting member is hinged to the sand throwing pipe arm through the baffle.
[0011] Furthermore, the first side plate and the second side plate are located on the left and right sides of the sand-throwing pipe arm, respectively. A first sliding groove guide structure is provided between the first side plate and the left side of the sand-throwing pipe arm, and a second sliding groove guide structure is provided between the second side plate and the right side of the sand-throwing pipe arm. The first sliding groove guide structure and the second sliding groove guide structure are used to guide the relative rotation between the sand-throwing pipe arm and the adjusting member.
[0012] Furthermore, the first chute guide structure includes a first guide member, which is disposed on the left side wall of the sand-throwing pipe arm. The first side plate corresponds to the outer side of the left side wall of the sand-throwing pipe arm and has a first chute. The first chute is arc-shaped, and the first guide member is slidably connected to the first chute.
[0013] The second chute guide structure includes a second guide member, which is disposed on the right side wall of the sand-throwing pipe arm. The second side plate corresponds to the outer side of the right side wall of the sand-throwing pipe arm and has a second chute, which is arc-shaped.
[0014] Furthermore, the first guide member is detachably connected to the left side wall of the sand-throwing pipe arm, and the first guide member passes through the first slide groove; the second guide member is detachably connected to the right side wall of the sand-throwing pipe arm, and the second guide member passes through the second slide groove.
[0015] Furthermore, the first chute guide structure also includes a first anti-detachment block, which is disposed on the end of the first guide member away from the sand-throwing pipe arm and located on the outside of the first side plate. Its length is greater than the width of the first chute, and it is used to prevent the first chute from detaching from the first guide member.
[0016] The second chute guide structure also includes a second anti-detachment block, which is located on the end of the second guide member away from the sand-throwing pipe arm and on the outside of the second side plate. Its length is greater than the width of the second chute, and it is used to prevent the second chute from detaching from the second guide member.
[0017] Furthermore, the first anti-detachment block is sleeved on the end of the first guide member away from the sand-throwing pipe arm, and a first pin is inserted into the outside of the first anti-detachment block on the first guide member. The first pin is used to limit the first anti-detachment block.
[0018] The second anti-detachment block is sleeved on the end of the second guide member away from the sand-throwing pipe arm. The second guide member also has a second pin inserted on the outside of the second anti-detachment block. The second pin is used to limit the second anti-detachment block.
[0019] Furthermore, the first guide and the second guide are located outside the sand-throwing channel.
[0020] Furthermore, the adjustment mechanism includes a telescopic rod, a first hinge seat, and a second hinge seat. The first hinge seat is located on the side of the sand-throwing pipe arm near the sand outlet, and the second hinge seat is located on the adjustment member. The two ends of the telescopic rod are respectively hinged to the first hinge seat and the second hinge seat. The two ends of the telescopic rod can extend and retract to allow the adjustment member to rotate around the hinged portion.
[0021] The telescopic rod is a hydraulic cylinder, a pneumatic cylinder, or an electric actuator.
[0022] Furthermore, the sand-throwing tube arm is a rigid structure, and the sand-throwing channel is smoothed to reduce friction.
[0023] To achieve the above objectives, the inventors also provide a sand-throwing vehicle, including a sand-throwing arm, a rotating mechanism, a sand-throwing fan, and a chassis. The sand-throwing arm is an adjustable sand-throwing arm as described in any of the above embodiments. The sand-throwing arm and the fixed base are rotatably arranged relative to each other. The fixed base is mounted on the sand-throwing fan via the rotating mechanism. The rotating mechanism is used to rotate the fixed base left and right. The sand outlet of the sand-throwing fan faces the sand inlet of the sand-throwing channel. The sand-throwing fan is mounted on the chassis.
[0024] Unlike existing technologies, the above technical solution has the following beneficial effects:
[0025] Sand enters the sand-throwing channel of the sand-throwing pipe arm from the sand-feeding machine through the sand-feeding pipe, and is finally thrown out from the sand outlet. The shape of the sand-throwing pipe arm remains fixed and will not bend with adjustments. When it is necessary to adjust the sand-throwing direction, the adjustment mechanism is activated, driving the adjustment component to rotate around the hinge point. The adjustment component is located next to the sand outlet and can change the direction of sand throwing, achieving precise sand throwing, significantly increasing the throwing distance, and improving fire extinguishing efficiency.
[0026] 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
[0027] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this utility model and other related contents, and should not be considered as limitations on this application.
[0028] Figure 1 This is a side view of the sand-throwing arm with an adjustable sand-throwing port in this embodiment;
[0029] Figure 2 This is one of the perspective views of the sand-throwing arm with an adjustable sand-throwing port in this embodiment;
[0030] Figure 3 for Figure 2 Enlarged schematic diagram of part A in the middle;
[0031] Figure 4 This is the second perspective view of the sand-throwing arm with an adjustable sand-throwing port in this embodiment;
[0032] Figure 5 This is a front view of the sand-throwing vehicle in this embodiment.
[0033] Explanation of reference numerals in the attached figures:
[0034] 1. Sand-throwing arm;
[0035] 11. Fixture;
[0036] 12. Sand-throwing pipe arm; 121. Left side wall; 122. Right side wall; 123. Lower wall;
[0037] 13. Adjustment device;
[0038] 131. Adjusting component; 1311. Baffle; 1312. First side plate; 1313. Second side plate;
[0039] 132. Adjustment mechanism; 1321. Telescopic rod; 1322. First hinge seat; 1323. Second hinge seat;
[0040] 133. First slide guide structure; 1331. First guide component; 1332. First slide;
[0041] 134. Second slide guide structure; 1341. Second guide component; 1342. Second slide; 1343. Second anti-detachment block; 1344. Second pin; 1345. Space;
[0042] 14. Hinges;
[0043] 2. Sand-throwing blower;
[0044] 3. Chassis;
[0045] 4. Rotary mechanism. Detailed Implementation
[0046] 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.
[0047] 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 one embodiment 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.
[0048] 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.
[0049] 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.
[0050] 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.
[0051] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended 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.
[0052] As understood 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.
[0053] 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. They are only for the purpose 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.
[0054] 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 arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.
[0055] Please see Figures 1 to 5 This embodiment provides a sand-throwing arm with an adjustable throwing port, comprising:
[0056] The fixed base 11 provides stable support for the sand-throwing arm 1;
[0057] A sand-throwing pipe arm 12 has a sand-throwing channel, one end of which is a sand inlet and the other end is a sand outlet. The sand-throwing pipe arm 12 is mounted on a fixed base 11.
[0058] The adjusting device 13 includes an adjusting member 131 and an adjusting mechanism 132. The adjusting member 131 is hinged to the sand throwing pipe arm 12 and is located at the sand outlet of the sand throwing channel. It is used to adjust the direction of the sand thrown from the sand outlet of the sand throwing channel. The adjusting mechanism 132 is connected to the sand throwing pipe arm 12 and the adjusting member 131. It is used to make the adjusting member 131 rotate around the hinged part, thereby adjusting the direction of the sand throwing.
[0059] Sand enters the sand-throwing channel of the sand-throwing pipe arm 12 from the sand-throwing machine through the sand-conveying pipe, and is finally thrown out from the sand outlet. The shape of the sand-throwing pipe arm 12 remains fixed and will not bend with adjustment. When it is necessary to adjust the sand-throwing direction, the adjusting mechanism 132 is activated, driving the adjusting component 131 to rotate around the hinge point. The adjusting component 131 is located next to the sand outlet and can change the direction of sand throwing, achieving precise sand throwing, significantly increasing the sand throwing distance, and improving fire extinguishing efficiency.
[0060] Please see Figures 1 to 2 In this embodiment, the adjusting member 131 includes a baffle 1311, a first side plate 1312, and a second side plate 1313. The first side plate 1312 and the second side plate 1313 are located on the left and right ends of the baffle 1311 and on the same side of the baffle 1311, i.e., the baffle 1311, the first side plate 1312, and the second side plate 1313 form a [-shape or U-shape. The baffle 1311, the first side plate 1312, and the second side plate 1313 form a sand-throwing port. The adjusting member 131 is hinged to the sand-throwing tube arm 12 through the baffle 1311. Preferably, the baffle 1311 and the upper wall of the sand-throwing tube arm 12 are hinged together by a hinge 14. The baffle 1311 rotates around the hinge point by the drive of the adjusting mechanism 132, changing its relative angle with the sand outlet, thereby adjusting the orientation of the sand-throwing port. The first side plate 1312 and the second side plate 1313 are located on the left and right sides of the baffle 1311, respectively, to restrict the lateral spread of sand and ensure that the sand is concentrated and thrown in the preset direction.
[0061] In some embodiments, the adjustment member 131 may be L-shaped.
[0062] Please see Figure 2In this embodiment, the first side plate 1312 and the second side plate 1313 correspond to the positions of the left side wall 121 and the right side wall 122 of the sand-throwing tube arm 12. The first side plate 1312 can be located inside or outside the left side wall 121 of the sand-throwing tube arm 12, and the second side plate 1313 can be located inside or outside the right side wall 122 of the sand-throwing tube arm 12. A first sliding groove guide structure 133 is provided between the first side plate 1312 and the left side wall 121 of the sand-throwing tube arm 12, and a second sliding groove guide structure 134 is provided between the second side plate 1313 and the right side wall 122 of the sand-throwing tube arm 12. The first sliding groove guide structure 133 and the second sliding groove guide structure 134 are used to guide the relative rotation between the sand-throwing tube arm 12 and the adjusting member 131. The first sliding groove guide structure 133 and the second sliding groove guide structure 134 can effectively limit the rotation trajectory of the adjusting member 131, prevent it from deviating or shaking during rotation, and ensure precise control of the sand-throwing direction.
[0063] Please see Figures 1 to 2 In this embodiment, the first chute guide structure 133 includes a first guide member 1331, which is disposed on the left side wall 121 of the sand-throwing pipe arm 12. A first side plate 1312 is located on the outer side of the left side wall 121 of the sand-throwing pipe arm 12 and has a first chute 1332, which is arc-shaped. The first guide member 1331 is slidably connected to the first chute 1332. The second chute guide structure 134 includes a second guide member 1341, which is disposed on the right side wall 122 of the sand-throwing pipe arm 12. A second side plate 1313 is located on the outer side of the right side wall 122 of the sand-throwing pipe arm 12 and has a second chute 1342, which is arc-shaped. When the adjusting member 131 rotates around the hinge point, the first guide member 1331 slides in the first chute 1332, and the second guide member 1341 slides in the second chute 1342. The guide component acts like a slider. Because the groove is arc-shaped, the guide component moves along the arc-shaped trajectory, ensuring that the rotation path of the adjusting component 131 is consistent with the designed trajectory. By setting the arc-shaped groove guide structure, the rotational guiding function between the adjusting component 131 and the sand-throwing arm 12 is further optimized, improving the rotational accuracy, structural stability, and operational smoothness of the sand-throwing arm 1. Its structural design is simple and practical, significantly improving the adjustment performance of the sand outlet of the sand-throwing arm 1.
[0064] Please see Figures 1 to 2In this embodiment, the first guide member 1331 is detachably connected to the left side wall 121 of the sand-throwing pipe arm 12, and the first guide member 1331 passes through the first sliding groove 1332. The second guide member 1341 is detachably connected to the right side wall 122 of the sand-throwing pipe arm 12, and the second guide member 1341 passes through the second sliding groove 1342. The first sliding groove 1332 and the second sliding groove 1342 pass through the grooves on both the inner and outer sides, allowing the first guide member 1331 and the second guide member 1341 to pass through. The first guide member 1331 and the second guide member 1341 are detachably connected to the left side wall 121 and the right side wall 122 of the sand-throwing pipe arm 12 by means of threaded connection, snap connection, or pin connection, respectively. The detachable connection design makes the installation and removal of the guide members more convenient. During installation, first align the adjusting member 131 with the sand-throwing pipe arm 12, and then install the first guide member 1331 and the second guide member 1341 onto the left side wall and the right side wall, respectively, passing through the sliding groove and fixing them. During disassembly, simply loosen the connection of the guide.
[0065] In this embodiment, Figure 3 The second slide guide structure 134 is shown, wherein the second guide member 1341 is cylindrical. The first slide guide structure 133 and the second slide guide structure 134 are symmetrically arranged on the adjusting member 131. The first slide guide structure 133 can also refer to the second slide guide structure 134. In some embodiments, the slide is a blind groove, and a portion of the guide member is located within the slide and can slide along the arc-shaped slide.
[0066] Please see Figures 2 to 3 In this embodiment, the first chute guide structure 133 further includes a first anti-detachment block, which is disposed on the end of the first guide member 1331 away from the sand-throwing pipe arm and located outside the first side plate 1312. Its length is greater than the width of the first chute 1332, and it is used to prevent the first chute 1332 from detaching from the first guide member 1331. The second chute guide structure 134 further includes a second anti-detachment block 1343, which is disposed on the end of the second guide member 1341 away from the sand-throwing pipe arm and located outside the second side plate 1313. Its length is greater than the width of the second chute 1342, and it is used to prevent the second chute 1342 from detaching from the second guide member 1341. Taking the first guide member 1331 and the second guide member 1341 as cylindrical rods as an example, the anti-detachment block can abut against the side plate of the adjusting member 131 before the adjusting member 131 is about to detach from the guide member, thus restricting the adjusting member 131 from moving axially along the guide member, reducing the risk of the slide groove detaching from the guide member, reducing maintenance frequency and cost, and extending service life.
[0067] Please see Figures 2 to 3In this embodiment, the first anti-detachment block is sleeved on the end of the first guide member 1331 away from the sand-throwing pipe arm. The first guide member 1331 also has a first pin inserted on the outside of the first anti-detachment block. The first pin is used to limit the first anti-detachment block and prevent the first anti-detachment block from moving along the axial direction of the first guide member 1331. The second anti-detachment block 1343 is sleeved on the end of the second guide member 1341 away from the sand-throwing pipe arm. The second guide member 1341 also has a second pin 1344 inserted on the outside of the second anti-detachment block 1343. The second pin 1344 is used to limit the second anti-detachment block 1343 and prevent the first anti-detachment block from moving along the axial direction of the first guide member 1331.
[0068] In a further embodiment, the first anti-detachment block 1343 has a space for accommodating the first pin on the side facing the first pin, and the second anti-detachment block 1343 has a space 1345 for accommodating the second pin 1344 on the side facing the second pin 1344. Figure 3 A circular array of multiple spaces 1345 centered on a second anti-detachment block 1343 is shown.
[0069] Please see Figure 2 In this embodiment, the first guide member 1331 and the second guide member 1341 are located outside the sand throwing channel. Figure 2 As shown, the left side wall 121, right side wall 122, lower wall 123, and upper wall of the sand-throwing pipe arm 12 form a sand-throwing channel. The left side wall and right side wall of the sand-throwing pipe arm 12 protrude below the lower wall. The first guide member 1331 and the second guide member 1341 are located on the left side wall and right side wall of the sand-throwing pipe arm 12 below the lower wall. The design of the guide members being located outside the sand-throwing channel avoids direct contact between the guide members and the sand, reducing the risk of wear and blockage of the chute guide structure.
[0070] Please see Figure 1 , Figure 2 and Figure 4 In this embodiment, the adjustment mechanism 132 includes a telescopic rod 1321, a first hinge seat 1322, and a second hinge seat 1323. The first hinge seat 1322 is located on the side of the sand-throwing pipe arm 12 near the sand outlet, and the second hinge seat 1323 is located on the adjustment member 131. The two ends of the telescopic rod 1321 are hinged to the first hinge seat 1322 and the second hinge seat 1323, respectively. The two ends of the telescopic rod 1321 can extend and retract to allow the adjustment member 131 to rotate around the hinged parts. The adjustment mechanism 132, with its telescopic rod 1321 and hinge seat design, has a compact structure, saves installation space, and is easy to integrate into the overall structure of the sand-throwing fire engine.
[0071] Please see Figure 1 , Figure 2 and Figure 4In this embodiment, the telescopic rod 1321 is a hydraulic cylinder, pneumatic cylinder, or electric actuator, used to provide the driving force for linear motion. When the telescopic rod 1321 (hydraulic cylinder, pneumatic cylinder, or electric actuator) extends or retracts, its two ends drive the adjusting member 131 to rotate around the hinge point via the first hinge seat 1322 and the second hinge seat 1323, respectively. The extension or retraction of the telescopic rod 1321 is directly converted into the rotation angle of the adjusting member 131, thereby adjusting the orientation of the sand-throwing nozzle. The operation is simple and easy to control, enabling rapid adjustment of the sand-throwing nozzle's orientation, saving manpower and time.
[0072] Please see Figure 2 and Figure 4 In this embodiment, the sand-throwing pipe arm is a rigid structure, such as stainless steel, aluminum alloy, or other high-strength metals, to ensure that the sand-throwing pipe arm 12 will not bend or deform during the sand-throwing process. The sand-throwing channel is smoothed (e.g., polished, coated, or lined with a smooth material) to reduce friction, which can effectively reduce the kinetic energy loss of sand during the transportation process and ensure that the sand is thrown out of the sand outlet at a high speed and efficiency.
[0073] Please see Figures 1 to 5 This embodiment also provides a sand-throwing vehicle, including a sand-throwing arm 1, a rotating mechanism 4, a sand-throwing fan 2, and a chassis 3. The sand-throwing arm 1 is a sand-throwing arm 1 with an adjustable sand-throwing port as described in any of the above embodiments. The sand-throwing pipe arm 12 and the fixed seat 11 are rotatably arranged relative to each other. The fixed seat 11 is mounted on the sand-throwing fan 2 through the rotating mechanism 4. The rotating mechanism 4 is used to make the fixed seat 11 rotate left and right. The sand outlet of the sand-throwing fan 2 faces the sand inlet of the sand-throwing channel. The sand-throwing fan 2 is mounted on the chassis 3.
[0074] The sand-throwing vehicle integrates the sand-throwing arm 1, the slewing mechanism 4, the sand-throwing fan 2, and the chassis 3 into a compact structure, facilitating movement and operation. The chassis 3 serves as the basic structure of the sand-throwing vehicle, supporting the sand-throwing fan 2, the slewing mechanism 4, and the sand-throwing arm 1, providing stability for movement and operation. The slewing mechanism 4 drives the fixed base 11 of the sand-throwing arm 1 to rotate left and right, covering a wider area and adapting to different firefighting scenarios. The sand outlet of the sand-throwing fan 2 connects to the sand inlet of the sand-throwing channel of the sand-throwing arm 1, used to transport sand to the sand-throwing arm 1.
[0075] In this embodiment, an engine may be provided on the chassis 3, which can provide power to make the tracked chassis 3 move and to make the sand-throwing blower 2 operate.
[0076] 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 sand-throwing arm with an adjustable throwing port, characterized in that, include: Fixed base; The sand-throwing pipe arm has a sand-throwing channel and is mounted on the fixed base; as well as An adjusting device includes an adjusting member and an adjusting mechanism. The adjusting member is hinged to the sand-throwing pipe arm and located at the sand outlet of the sand-throwing channel. It is used to adjust the direction in which sand is thrown from the sand outlet of the sand-throwing channel. The adjusting mechanism is connected to the sand-throwing pipe arm and the adjusting member. It is used to rotate the adjusting member around the hinged part, thereby adjusting the direction of sand throwing.
2. The sand-throwing arm according to claim 1, characterized in that, The adjusting component includes a baffle, a first side plate, and a second side plate. The first side plate and the second side plate are disposed on the left and right ends of the baffle and are located on the same side of the baffle. The baffle, the first side plate, and the second side plate form a sand throwing port. The adjusting component is hinged to the sand throwing pipe arm through the baffle.
3. The sand-throwing arm according to claim 2, characterized in that, The first side plate and the second side plate are located on the left and right sides of the sand-throwing pipe arm, respectively. A first sliding groove guide structure is provided between the first side plate and the left side of the sand-throwing pipe arm, and a second sliding groove guide structure is provided between the second side plate and the right side of the sand-throwing pipe arm. The first sliding groove guide structure and the second sliding groove guide structure are used to guide the relative rotation between the sand-throwing pipe arm and the adjusting component.
4. The sand-throwing arm according to claim 3, characterized in that, The first chute guide structure includes a first guide member, which is disposed on the left side wall of the sand-throwing pipe arm. The first side plate corresponds to the outer side of the left side wall of the sand-throwing pipe arm and has a first chute. The first chute is arc-shaped, and the first guide member is slidably connected to the first chute. The second chute guide structure includes a second guide member, which is disposed on the right side wall of the sand-throwing pipe arm. The second side plate corresponds to the outer side of the right side wall of the sand-throwing pipe arm and has a second chute, which is arc-shaped.
5. The sand-throwing arm according to claim 4, characterized in that, The first guide member is detachably connected to the left side wall of the sand-throwing pipe arm and passes through the first slide groove. The second guide member is detachably connected to the right side wall of the sand-throwing pipe arm and passes through the second slide groove.
6. The sand-throwing arm according to claim 4, characterized in that, The first chute guide structure further includes a first anti-detachment block, which is disposed on the end of the first guide member away from the sand throwing pipe arm and located on the outside of the first side plate. Its length is greater than the width of the first chute, and it is used to prevent the first chute from detaching from the first guide member. The second chute guide structure also includes a second anti-detachment block, which is located on the end of the second guide member away from the sand-throwing pipe arm and on the outside of the second side plate. Its length is greater than the width of the second chute, and it is used to prevent the second chute from detaching from the second guide member.
7. The sand-throwing arm according to claim 6, characterized in that, The first anti-detachment block is sleeved on the end of the first guide member away from the sand throwing pipe arm. The first guide member also has a first pin inserted on the outside of the first anti-detachment block. The first pin is used to limit the first anti-detachment block. The second anti-detachment block is sleeved on the end of the second guide member away from the sand-throwing pipe arm. The second guide member also has a second pin inserted on the outside of the second anti-detachment block. The second pin is used to limit the second anti-detachment block.
8. The sand-throwing arm according to any one of claims 4 to 7, characterized in that, The first guide and the second guide are located outside the sand throwing channel.
9. The sand-throwing arm according to claim 1, characterized in that, The adjustment mechanism includes a telescopic rod, a first hinge seat, and a second hinge seat. The first hinge seat is located on the side of the sand-throwing pipe arm near the sand outlet, and the second hinge seat is located on the adjustment member. The two ends of the telescopic rod are respectively hinged to the first hinge seat and the second hinge seat. The two ends of the telescopic rod can extend and retract to allow the adjustment member to rotate around the hinged part. The telescopic rod is a hydraulic cylinder, a pneumatic cylinder, or an electric actuator.
10. The sand-throwing arm according to claim 1, characterized in that, The sand-throwing tube arm is a rigid structure, and the sand-throwing channel is smoothed to reduce friction.
11. A sand-throwing vehicle, characterized in that, The device includes a sand-throwing arm, a rotating mechanism, a sand-throwing fan, and a chassis. The sand-throwing arm is an adjustable sand-throwing arm as described in any one of claims 1 to 10. The sand-throwing arm and the fixed base are rotatably arranged relative to each other. The fixed base is mounted on the sand-throwing fan via the rotating mechanism. The rotating mechanism is used to rotate the fixed base left and right. The sand outlet of the sand-throwing fan faces the sand inlet of the sand-throwing channel. The sand-throwing fan is mounted on the chassis.