Puncturing needle structure and fire fighting truck

Abstract

The embodiment of the utility model provides a pricking needle structure and a fire fighting truck, and relates to the field of fire fighting equipment. The fire fighting truck comprises the pricking needle structure. The pricking needle structure comprises a needle rod and a pricking needle, one end of the pricking needle is connected with the needle rod, the outer periphery of the pricking needle comprises a plurality of first cutting faces which are sequentially connected end to end, a first cutting edge is formed at the intersection of any two adjacent first cutting faces, and the radial size of the pricking needle is gradually reduced in the direction away from the needle rod. And the puncturing effect of the puncturing needle can be effectively improved, and the cutting efficiency of metal materials can also be improved.

Description

Technical Field

[0001] The utility model relates to the field of fire-fighting equipment, in particular to a puncture needle structure and a fire-fighting truck. Background Art

[0002] The piercing arm fire truck is an emergency equipment developed for firefighting and rescue needs in enclosed spaces. It uses the piercing mechanism installed at the end of its arm to penetrate obstacles such as aircraft fuselage skin, glass curtain walls, and warehouse exterior walls, and then directly applies the fire extinguishing agent to the flame, achieving the purpose of efficient fire extinguishing.

[0003] The inventor has found through research that the needles of the needle structures on some existing fire trucks are conical in shape, which makes it difficult to cut metal materials. Utility Model Content

[0004] The utility model aims to provide a needle structure, which can improve the cutting efficiency of metal materials.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a needle structure, comprising:

[0007] Needle bar;

[0008] A needle, one end of which is connected to the needle rod, the outer peripheral surface of the needle includes a plurality of first cutting surfaces connected end to end in sequence, the intersection of any two adjacent first cutting surfaces forms a first cutting edge, and the radial size of the needle gradually decreases in the direction away from the needle rod.

[0009] In an optional embodiment, the end of the needle away from the needle shaft has a puncture portion;

[0010] The outer peripheral surface of the puncture portion includes a plurality of second cutting edges spaced apart in the circumferential direction, and / or an end of the puncture portion away from the needle rod is a puncture plane.

[0011] In an optional embodiment, the puncture needle is detachably connected to the needle rod.

[0012] In an optional embodiment, the needle is threadably connected to the needle shaft.

[0013] In an optional embodiment, the needle rod has a first end and a second end, the second end is connected to the needle, and in the direction of the first end close to the second end, the needle rod has a first gradient section and a second gradient section arranged in sequence, the radial dimension of the first gradient section in the direction close to the needle gradually increases, and the radial dimension of the second gradient section in the direction close to the needle gradually decreases.

[0014] In an optional embodiment, the outer side wall of the needle rod is provided with a wrench mounting structure, and the wrench mounting structure is located at an end of the needle rod away from the puncture needle.

[0015] In an optional embodiment, the end of the needle rod away from the puncture needle has a connecting piece, and the connecting piece is used for detachable connection with the driving device, or the outer side wall of the connecting piece is provided with an external thread for threaded connection with the driving device.

[0016] In an optional embodiment, the needle rod and the stinging needle are respectively provided with a first preset channel and a second preset channel for the circulation of the fire extinguishing agent, the first preset channel is connected to the second preset channel, the outer wall of the needle rod is provided with a plurality of first air vents connected to the first preset channel, and the outer wall of the stinging needle is provided with a plurality of second air vents connected to the second preset channel.

[0017] In an optional embodiment, the direction in which the needle bar approaches the needle is a preset direction, and the preset direction is parallel to the axis of the needle bar and the needle;

[0018] The orientation of the first vent hole forms a first angle with the preset direction, the first angle is an acute angle, and the first angle gradually decreases in the direction close to the needle; and / or,

[0019] The orientation of the second ventilation hole forms a second angle with the preset direction, and the second angle is an acute angle. In the direction away from the needle rod, the second angle gradually decreases.

[0020] In a second aspect, the utility model provides a fire truck, comprising the lancet structure of any one of the aforementioned embodiments.

[0021] The beneficial effects of the embodiment of the utility model are as follows: the embodiment of the utility model provides a needle structure including a needle bar and a needle, one end of the needle is connected to the needle bar, the outer periphery of the needle includes a plurality of first cutting surfaces connected end to end in sequence, the intersection of any two adjacent first cutting surfaces forms a first cutting edge, and the radial size of the needle gradually decreases in the direction away from the needle bar, which can effectively improve the puncture effect of the needle and the cutting efficiency of metal materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 An exploded schematic diagram of a needle structure provided in an embodiment of the utility model;

[0024] Figure 2 for Figure 1 A partial enlarged view of

[0025] Figure 3 A schematic cross-sectional view of a needle structure provided in an embodiment of the utility model.

[0026] Icon: 1-puncture needle structure; 100-needle rod; 110-first gradient section; 120-second gradient section; 130-first preset channel; 140-first ventilation hole; 150-connecting piece; 160-wrench mounting structure; 101-first end; 102-second end; 200-puncture needle; 210-first cutting surface; 211-first cutting edge; 202-puncture part; 220-second cutting surface; 222-second cutting edge; 223-puncture plane; 230-second preset channel; 240-second ventilation hole; 250-connecting rod; 2-driving device. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The specific structure of a needle structure provided by an embodiment of the utility model and the corresponding technical effects it brings are described in detail below in conjunction with the patent drawings.

[0034] Please refer to Figure 1-Figure 3 A needle structure 1 provided by an embodiment of the utility model includes a needle rod 100 and a needle 200. One end of the needle 200 is connected to the needle rod 100. The outer periphery of the needle 200 includes a plurality of first cutting surfaces 210 connected end to end in sequence. The intersection of any two adjacent first cutting surfaces 210 forms a first cutting edge 211. In the direction away from the needle rod 100, the radial size of the needle 200 gradually decreases.

[0035] It can be understood that the outer peripheral surface of the needle 200 is formed with a first cutting edge 211, and the radial dimension of the needle 200 gradually decreases in the direction away from the needle rod 100, which can effectively improve the puncture effect of the needle 200 and the cutting efficiency of the metal material. A sharper cutting edge can also be processed and set at the first cutting edge 211 to assist the needle 200 in cutting while puncturing, thereby improving the puncture effect of the needle 200.

[0036] In detail, in the present embodiment, the number of the first cutting surfaces 210 is four, that is, the number of the first cutting edges 211 in the present embodiment is also four.

[0037] Of course, in some other optional embodiments, the number of first cutting surfaces 210 can also be 3, 5, 6 or 7. Similarly, the number of first cutting edges 211 matches the number of first cutting surfaces 210, and the number of first cutting edges 211 can also be 3, 5, 6 or 7.

[0038] The number of the first cutting surfaces 210 is not specifically limited here.

[0039] In detail, in order to improve the service life of the needle structure 1, the needle rod 100 and the needle 200 in this embodiment are made of high-quality steel and are heat-treated to ensure that the first cutting edge 211 has a high hardness and improve the cutting effect and life of the needle 200.

[0040] In order to further improve the puncture effect of the needle 200, in the present embodiment, the end of the needle 200 away from the needle rod 100 has a puncture portion 202, and the outer peripheral surface of the puncture portion 202 includes second cutting edges 222 arranged at intervals along the circumferential direction.

[0041] In detail, the outer peripheral surface of the puncture part 202 includes a plurality of second cutting surfaces 220 connected end to end, and any two adjacent second cutting surfaces 220 form a second cutting edge 222. In this embodiment, the number of the second cutting surfaces 220 is four, and similarly, the number of the second cutting edges 222 is also four.

[0042] It can be understood that, with the cooperation of the first cutting edge 211 and the second cutting edge 222 , the puncture effect of the needle 200 can be effectively improved, and the cutting efficiency of the metal material can also be improved.

[0043] In this embodiment, the end of the puncture portion away from the needle rod 100 is the puncture plane 223, that is, the end of the needle 200 away from the needle rod 100 is the puncture plane 223, not the needle tip. Therefore, during the puncture process of the needle 200, the puncture effect is guaranteed and the needle 200 is not easily damaged.

[0044] Optionally, in the present embodiment, the thorn needle 200 and the needle rod 100 are detachably connected. It is understandable that some existing needle rods 100 and the thorn needle 200 are an integrated structure. When the thorn needle 200 or the needle rod 100 is damaged, the entire thorn needle structure 1 needs to be replaced at one time, which is costly.

[0045] In the present embodiment, the needle 200 and the needle rod 100 are detachably connected. Therefore, when one of the needle 200 or the needle rod 100 is damaged, only the damaged part needs to be replaced without replacing the entire needle structure 1, thereby saving a certain amount of cost.

[0046] Furthermore, since the needle 200 and the needle bar 100 are detachably connected, the needle bar 100 can be easily assembled with needle structures 1 of different types, and the needle 200 can be easily replaced.

[0047] In detail, the needle 200 is threadedly connected to the needle rod 100. Of course, in some other embodiments, the needle 200 and the needle rod 100 can also be detachably connected in a snap-on manner.

[0048] Specifically, the needle rod 100 has a first preset through hole, an end of the first preset through hole close to the needle 200 is provided with an internal thread, and an end of the needle 200 close to the needle rod 100 is provided with a connecting rod 250, and an outer side wall of the connecting rod 250 is provided with an external thread.

[0049] Specifically, the needle rod 100 has a first end 101 and a second end 102, and the second end 102 is connected to the needle 200. In the direction from the first end 101 to the second end 102, the needle rod 100 has a first gradient section 110 and a second gradient section 120 arranged in sequence. The radial dimension of the first gradient section 110 in the direction close to the needle 200 gradually increases, and the radial dimension of the second gradient section 120 in the direction close to the needle 200 gradually decreases. That is to say, the radial dimension of the needle rod 100 is the largest between the first gradient section 110 and the second gradient section 120.

[0050] Therefore, during the puncture process of the needle structure 1, the outer peripheral surface of the first gradient section 110 will not be damaged. When the radial dimension of the driving device 2 connected to the end of the needle rod 100 away from the needle 200 is smaller than the maximum dimension of the needle rod 100, the structure connected to the end of the first gradient section 110 away from the needle 200 will not be damaged.

[0051] The driving device 2 is used to drive the needle rod 100 to move along its own axial direction.

[0052] In detail, the outer circumferential surface of the first gradient section 110 and the outer circumferential surface of the second gradient section 120 of the needle bar 100 are both conical surfaces, and the first gradient section 110 and the second gradient section 120 are in a circular arc with a smooth transition.

[0053] Of course, a cylindrical section with a constant radial dimension may be provided between the first gradient section 110 and the second gradient section 120 . The radial dimension of the cylindrical section is the same as the maximum radial dimension of the first gradient section 110 and the maximum radial dimension of the second gradient section 120 .

[0054] Furthermore, the radial dimension of the end of the first gradient section 110 away from the needle 200 is smaller than the radial dimension of the end of the second gradient section 120 away from the first gradient section 110 .

[0055] In detail, one end of the needle rod 100 away from the puncture needle 200 has a connecting piece 150 , and the connecting piece 150 is used for detachably connecting with the driving device 2 .

[0056] The outer wall of the connecting member 150 is provided with an external thread for threaded connection with the driving device 2, and the driving device 2 is provided with an internal thread. In detail, when the radial dimension of the driving device 2 is smaller than the maximum radial dimension of the needle rod 100, the driving device 2 can be prevented from being damaged when the puncture needle structure 1 is puncturing.

[0057] Of course, in some other embodiments, the connector 150 can also be connected to the drive device 2 by snapping or other detachable connection methods. In detail, in order to ensure that the fire extinguishing agent can be sprayed out through the needle structure 1 during puncture, in this embodiment, the needle rod 100 and the needle 200 are respectively provided with a first preset channel 130 and a second preset channel 230 for the flow of the fire extinguishing agent, the first preset channel 130 is connected to the second preset channel 230, and the outer wall of the needle rod 100 is provided with a plurality of first vents 140 connected to the first preset channel 130, and the outer wall of the needle 200 is provided with a plurality of second vents 240 connected to the second preset channel 230. It can be understood that the first preset channel 130 and the second preset channel 230 are provided between the needle rod 100 and the needle 200 for conveying the fire extinguishing agent; the first vent 140 and the second vent 240 provided on the outer wall of the needle rod 100 and the needle 200 are used to ensure the spraying of the fire extinguishing agent.

[0058] It should be noted that the connecting member 150 has a first preset channel 130 .

[0059] In detail, in the present embodiment, the direction in which the needle rod 100 approaches the needle 200 is a preset direction, which is parallel to the axis of the needle rod and the needle. The orientation of the first vent hole 140 forms a first angle with the preset direction, and the first angle is an acute angle. In the direction approaching the needle 200, the first angle gradually decreases.

[0060] It can be understood that, for any two first vent holes 140 , the first angle formed between the orientation of the first vent hole 140 close to the needle 200 and the preset direction is smaller than the first angle formed between the preset direction of the first vent hole 140 away from the needle 200 and the axis.

[0061] Similarly, the orientation of the second ventilation hole 240 forms a second angle with the preset direction, and the second angle is an acute angle. In the direction away from the needle rod 100, the second angle gradually decreases.

[0062] Similar to the above, for any two second ventilation holes 240, the second angle formed by the orientation of the second ventilation hole 240 away from the needle rod 100 and the preset direction is smaller than the second angle formed by the orientation of the second ventilation hole 240 close to the needle rod 100 and the preset direction.

[0063] It can be understood that since the orientation of the first vent hole 140 has a first angle with the preset direction and the orientation of the second vent hole 240 has a second angle with the preset direction, when the fire extinguishing agent is sprayed, the fire extinguishing agent flow has a certain radiation range.

[0064] In detail, in order to facilitate the installation of the needle rod 100, a wrench mounting structure 160 is provided on the outer wall of the needle rod 100. The wrench mounting structure 160 is located at the end of the needle rod 100 away from the puncture needle structure 1. In detail, the wrench mounting structure 160 is located on the first gradient section 110 to avoid damage to the wrench mounting structure 160 during the puncture process.

[0065] The embodiment of the utility model further provides a fire truck, which includes a vehicle body (not shown in the figure), a connecting pipe (not shown in the figure), a pump (not shown in the figure), a driving arm (not shown in the figure) and the above-mentioned puncture needle structure 1. The vehicle body is connected to the above-mentioned puncture needle structure 1 through the driving arm, one end of the connecting pipe is connected to the first preset channel 130, and the other end of the connecting pipe is connected to the fire extinguishing tank filled with fire extinguishing agent, and the pump is used to transport the fire extinguishing agent to the first preset channel 130.

[0066] In summary, the embodiment of the utility model provides a needle structure 1 including a needle bar 100 and a needle 200, one end of the needle 200 is connected to the needle bar 100, the outer periphery of the needle 200 includes a plurality of first cutting surfaces 210 connected end to end, and the intersection of any two adjacent first cutting surfaces 210 forms a first cutting edge 211, and the radial dimension of the needle 200 gradually decreases in the direction away from the needle bar 100. The puncture effect of the needle 200 can be effectively improved, and the cutting efficiency of the metal material can also be improved.

[0067] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A needle structure, characterized in that: include: Needle bar; A needle, one end of which is connected to the needle rod, the outer peripheral surface of which includes a plurality of first cutting surfaces which are sequentially connected end to end, the intersection of any two adjacent first cutting surfaces forms a first cutting edge, and the radial dimension of the needle gradually decreases in the direction away from the needle rod.

2. The needle structure according to claim 1, characterized in that: The end of the needle away from the needle rod has a puncture portion; The outer peripheral surface of the puncture portion includes a plurality of second cutting edges spaced apart in the circumferential direction, and / or an end of the puncture portion away from the needle rod is a puncture plane.

3. The needle structure according to claim 1, characterized in that: The pricking needle is detachably connected to the needle rod.

4. The needle structure according to claim 3, characterized in that: The pricking needle is threadably connected to the needle rod.

5. The needle structure according to claim 1, characterized in that: The needle rod has a first end and a second end, the second end is connected to the needle, and in the direction from the first end to the second end, the needle rod has a first gradient section and a second gradient section arranged in sequence, the radial dimension of the first gradient section in the direction close to the needle gradually increases, and the radial dimension of the second gradient section in the direction close to the needle gradually decreases.

6. The needle structure according to claim 1, characterized in that: The outer side wall of the needle rod is provided with a wrench mounting structure, and the wrench mounting structure is located at an end of the needle rod away from the puncture needle.

7. The needle structure according to claim 1, characterized in that: The end of the needle rod away from the puncture needle has a connecting piece, and the connecting piece is used for detachable connection with the driving device, or the outer side wall of the connecting piece is provided with an external thread for threaded connection with the driving device.

8. The needle structure according to claim 1, characterized in that: The needle rod and the puncture needle are respectively provided with a first preset channel and a second preset channel for the circulation of the fire extinguishing agent, the first preset channel is connected with the second preset channel, the outer wall of the needle rod is provided with a plurality of first ventilation holes connected with the first preset channel, and the outer wall of the puncture needle is provided with a plurality of second ventilation holes connected with the second preset channel.

9. The needle structure according to claim 8, characterized in that: The direction in which the needle bar approaches the needle is a preset direction, and the preset direction is parallel to the axis of the needle bar and the needle; The orientation of the first vent hole forms a first angle with the preset direction, the first angle is an acute angle, and the first angle gradually decreases in the direction close to the needle; and / or, The orientation of the second ventilation hole forms a second angle with the preset direction, and the second angle is an acute angle. In the direction away from the needle rod, the second angle gradually decreases.

10. A fire truck, characterized in that: The invention comprises the puncture needle structure according to any one of claims 1 to 9.

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