Triggering mechanism of netting device and netting device

Abstract

The utility model discloses a netting device trigger mechanism and a netting device in the field of netting devices. The netting device trigger mechanism comprises a main body, the trigger mechanism used for controlling connection and disconnection of an energy storage air chamber and a spraying channel, and an opening mechanism of a switch used for movement of the trigger mechanism. And the high-pressure gas in the energy storage gas chamber enters the balance gas chamber to act on the trigger mechanism. When the opening mechanism is opened, the trigger mechanism is pushed to move by high-pressure gas inside the trigger mechanism, so that the energy storage gas chamber is communicated with the injection channel, the high-pressure gas pushes the trigger mechanism to move and enters the balance gas chamber to form counter-acting force on the trigger mechanism, and the energy storage gas chamber and the balance gas chamber are separated from each other. Therefore, the force exerted on the opening mechanism by the triggering mechanism is reduced, and the problem that the opening mechanism is difficult to operate due to too high pressure of the high-pressure gas is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of net trap, especially a net trap trigger mechanism and net trap. BACKGROUND

[0002] The portable net trap is widely applied in unmanned aerial vehicle capture, animal rescue, public security capture and many other fields, and the portable net trap is also called net gun, which is generally driven by compressed gas, and is different from the traditional air gun, wherein the front end of the net trap has a large volume and weight, and a large-diameter gas outlet is needed to meet the instantaneous thrust during launching, and since the trigger mechanism is directly connected with the internal gas, the large-diameter gas outlet will cause a large opening force. In order to facilitate operation and reduce the opening force, the existing compressed gas as the power is low-pressure gas, and since the gas pressure is low, the gas energy is small, and the instantaneous jetting force is small, which leads to a short range of the existing portable net trap, and only a small-size net body of 2-4 meters can be driven, and the effect is poor when driving a large capture net of 8 meters, 10 meters or more, and the preset unfolding effect and launching distance cannot be achieved, and the complex capture requirements for long-distance and large targets cannot be met.

[0003] Increasing the gas pressure of the compressed gas in the net trap can solve the above problems, but increasing the gas pressure will also cause a sharp increase in the driving force of the trigger mechanism, and when the gas storage pressure is higher than 20Mpa or more, several hundred kilograms of opening force are needed for launching, and it is difficult for a single person to hold and use it practically, and how to reduce the opening force of the high-pressure portable net trap during launching so that the security personnel can use it easily has become a problem to be solved urgently. SUMMARY

[0004] The utility model aims at providing a net trap trigger mechanism and net trap, which adjusts the force of the gas in the energy storage chamber acting on the trigger mechanism by setting a balance gas chamber in the trigger mechanism, so as to adjust the required opening force and avoid the problem of excessive opening force.

[0005] To solve the above technical problems, the following technical solutions are adopted:

[0006] In a first aspect, the utility model provides a net trap trigger mechanism, which comprises:

[0007] A main body is internally provided with an energy storage chamber, a jetting channel and a jetting port, a trigger mechanism is arranged between the energy storage chamber and the jetting channel, and the high-pressure gas in the energy storage chamber is jetted out through the jetting channel and acts on the capture net arranged on the jetting port;

[0008] The trigger mechanism is used for controlling the on-off of the energy storage chamber and the jetting channel, one end of the trigger mechanism is connected with an opening mechanism, and the other end of the trigger mechanism is in communication with the energy storage chamber;

[0009] The opening mechanism is used for switching the movement of the trigger mechanism.

[0010] a balance gas chamber, the high pressure gas in the energy storage gas chamber enters the balance gas chamber to act on the trigger mechanism.

[0011] Optionally, the trigger mechanism comprises a trigger rod and a trigger rod sleeve, one end of the trigger rod is arranged in the trigger rod sleeve and the other end of the trigger rod extends out of the trigger rod sleeve and is connected with the opening mechanism.

[0012] Optionally, the trigger rod sleeve is provided with a middle passage penetrating through both sides at one end away from the opening mechanism, the middle passage realizes the communication between the energy storage gas chamber and the injection channel, and the trigger rod controls the opening and closing of the middle passage.

[0013] Optionally, the trigger rod is a cylindrical structure with two different diameters, namely a first cylinder and a second cylinder, the diameter of the first cylinder is smaller than that of the second cylinder, the end of the first cylinder is a hemispherical structure, the hemispherical structure is connected with the opening mechanism, through holes are provided at both sides of the end of the first cylinder connected with the second cylinder, the second cylinder is provided with a trigger passage penetrating up and down, one end of the trigger passage is communicated with the through hole, and the other end of the trigger passage is communicated with the energy storage gas chamber.

[0014] Optionally, the trigger rod sleeve is provided with a stepped cylindrical cavity penetrating up and down for mounting the trigger rod, the stepped cylindrical cavity comprises a first cylindrical cavity and a second cylindrical cavity, the first cylindrical cavity is used for mounting the first cylinder, and the second cylindrical cavity is used for mounting the second cylinder.

[0015] Part of the first cylinder is located in the second cylindrical cavity, and a gap-shaped balance gas chamber exists in the second cylindrical cavity, and the through hole is communicated with the balance gas chamber.

[0016] Optionally, at least two sealing rings are arranged between the trigger rod and the trigger rod sleeve.

[0017] Optionally, the main body is further provided with a mounting groove for mounting the trigger mechanism, a sealing gasket is arranged at the bottom of the mounting groove, and the trigger mechanism is mounted on the sealing gasket.

[0018] Optionally, through holes are arranged on the bottom of the mounting groove and the sealing gasket, and the through holes on the two are arranged in alignment.

[0019] Optionally, the opening mechanism comprises an opening ring, the opening ring is provided with an opening hole, when the opening hole is aligned with the trigger mechanism, the high pressure gas in the energy storage gas chamber pushes the trigger mechanism to move outward, thereby realizing the communication between the injection channel and the energy storage gas chamber.

[0020] In the second aspect, the utility model provides a kind of net catcher, including the net catcher trigger mechanism of any one of first aspect.

[0021] Compared with prior art, the utility model reaches the beneficial effects of:

[0022] 1, the utility model discloses a trigger mechanism as the switch of the movement of opening mechanism, when opening mechanism opens, trigger mechanism is moved from inside to outside under the push of internal high-pressure gas, to realize the communication of energy storage gas chamber and injection channel, simultaneously, high-pressure gas enters balance gas chamber and forms self-outer-to-inner reaction force to trigger mechanism, by adjusting the resultant force suffered by trigger mechanism, the force of trigger rod on opening mechanism can be reduced, avoid the problem that opening mechanism is difficult to operate due to high-pressure gas pressure being too high.

[0023] 2, the utility model realizes the on-off of injection channel and energy storage gas chamber by the movement of trigger rod, and the movement of trigger rod is pushed by high-pressure gas, before the opening of device, the force of high-pressure gas on trigger rod is transmitted on opening mechanism, after opening mechanism opens, trigger rod moves outward, and the pressure formed by the gas pressure on trigger rod is adjusted by the balance gas chamber formed between trigger rod and trigger rod sleeve, the pressure meets that trigger rod can be pushed outward, and the pressure on trigger rod is not large, so that opening mechanism can be conveniently opened. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall mechanism schematic diagram of net catcher trigger mechanism in the utility model embodiment;

[0025] Figure 2 It is the main body structure schematic diagram in the utility model embodiment;

[0026] Figure 3 It is the trigger rod sleeve structure schematic diagram in the utility model embodiment;

[0027] Figure 4 It is the opening ring structure schematic diagram in the utility model embodiment;

[0028] Figure 5 It is the high-pressure gas chamber internal gas ejection path schematic diagram in the utility model embodiment;

[0029] Figure 6 It is the force schematic diagram of trigger rod in the utility model embodiment.

[0030] REFERENCE SIGNS:

[0031] 1, opening ring; 11, opening hole; 2, trigger lever sleeve; 21, stepped cylindrical cavity; 22, intermediate passage; 3, main body; 31, injection channel; 32, high-pressure channel; 33, mounting groove; 34, energy storage gas chamber; 4, first sealing ring; 5, second sealing ring; 6, sealing gasket; 7, trigger lever; 71, trigger channel; 8, balance gas chamber. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, rather than any limitation on the utility model and its application or use. EMBODIMENT

[0033] The embodiment provides a net trap trigger mechanism, comprising a main body 3, which is internally provided with an energy storage gas chamber 34, an injection channel 31 and an injection port, a trigger mechanism is arranged between the energy storage gas chamber 34 and the injection channel 31, and high-pressure gas in the energy storage gas chamber 34 is sprayed out through the injection channel 31 and acts on a capture net arranged on the injection port.

[0034] The trigger mechanism is used for controlling the on-off of the energy storage gas chamber 34 and the injection channel 31, one end of the trigger mechanism is connected with an opening mechanism, and the other end of the trigger mechanism is in communication with the energy storage gas chamber 34.

[0035] The opening mechanism is used for switching the movement of the trigger mechanism.

[0036] A balance gas chamber 8, high-pressure gas in the energy storage gas chamber 34 enters the balance gas chamber 8 and acts on the trigger mechanism.

[0037] When the opening mechanism is opened, high-pressure gas in the balance gas chamber 8 in the trigger mechanism pushes the trigger mechanism to move outward, so that the injection channel 31 is in communication with the energy storage gas chamber 34, high-pressure gas is sprayed out from the injection port through the injection channel 31 and acts on the capture net on the injection port, so that the capture net is shot to capture a target object.

[0038] High-pressure gas in the energy storage gas chamber 34 needs to flow into the balance gas chamber 8 to act on the trigger mechanism, so that the problem that the opening mechanism is difficult to open when the pressure of high-pressure gas is too large is avoided. EMBODIMENT

[0039] The embodiment 1 provides a net trap trigger mechanism, and the difference lies in that:

[0040] The trigger mechanism comprises a trigger rod 7 and a trigger rod sleeve 2. The trigger rod 7 is a cylindrical structure with different diameters, comprising a first cylinder and a second cylinder, the diameter of the first cylinder being larger than that of the second cylinder. The trigger rod sleeve 2 is provided with a stepped cylindrical cavity 21 penetrating from top to bottom for mounting the trigger rod 7, the stepped cylindrical cavity 21 comprising a first cylindrical cavity and a second cylindrical cavity, the diameter of the first cylindrical cavity being the same as that of the first cylinder, and the diameter of the second cylindrical cavity being the same as that of the second cylinder.

[0041] When the trigger mechanism is closed, i.e. the injection channel 31 is not communicated with the energy storage chamber 34, a part of the first cylinder is located in the second cylindrical cavity. Since the diameter of the second cylindrical cavity is larger than that of the first cylinder, there is a gap around the first cylinder, which is the balance chamber 8. A through hole penetrating from both sides is arranged on one side of the first cylinder connected with the second cylinder. A trigger channel 71 penetrating from top to bottom is arranged in the second cylinder, one end of the trigger channel 71 is communicated with the through hole, the through hole is communicated with the balance chamber 8, and the other end is communicated with the energy storage chamber 34. The high-pressure gas in the energy storage chamber 34 enters the balance chamber 8 through the trigger channel 71 and the through hole. By changing the diameter of the first cylinder and the diameter of the second cylindrical cavity, the size of the balance chamber 8 is changed, so as to adapt to different pressures of the high-pressure gas, and avoid the problem that the pressure of the high-pressure gas is too high, the pressure on the trigger rod 7 is too large, and the opening mechanism is difficult to open.

[0042] A hemispherical part in the shape of a hemisphere is arranged on one end of the first cylinder away from the second cylinder, and the hemispherical part is in contact with the opening mechanism. The opening mechanism is selected as an opening ring 1 arranged on the periphery of the main body 3. An opening hole 11 is arranged on the opening ring 1. By rotating the opening ring 1, the opening hole 11 is aligned with the trigger rod 7. After the trigger rod 7 is aligned with the opening hole 11, the high-pressure gas in the energy storage chamber 34 enters the trigger channel 71, and pushes the trigger rod 7 to move outward. Since the diameter of the second cylinder is larger than that of the first cylindrical cavity, the second cylinder does not enter the second cylindrical cavity from the top of the first cylindrical cavity, thereby limiting the outward ejection of the trigger rod 7.

[0043] As shown in Figure 1 , Figure 2 , Figure 3 , an intermediate channel 22 is arranged on one end of the trigger rod sleeve 2 away from the opening ring 1. One end of the intermediate channel 22 is connected with the injection channel 31, and the other end is connected with the energy storage chamber 34. The intermediate channel 22 controls the switch through the second cylinder on the trigger rod 7. The intermediate channel 22 comprises a through hole penetrating from both sides of the trigger rod sleeve 2 and a gas vent hole arranged at the bottom of the second cylindrical cavity. When the trigger rod 7 is mounted in the trigger rod sleeve 2, the inlet of the trigger channel 71 on the second cylinder of the trigger rod 7 is aligned with the gas vent hole at the bottom of the second cylindrical cavity, and the second cylinder seals the through hole penetrating from both sides of the trigger rod sleeve 2, thereby avoiding the high-pressure gas from entering the injection channel 31 through the intermediate channel 22 when the trigger rod sleeve 2 is not opened.

[0044] AsFigure 1 As shown, two sealing rings are arranged on the trigger rod 7, which are the first sealing ring 4 and the second sealing ring 5. The first sealing ring 4 is arranged on the first cylinder, and the second sealing ring 5 is arranged on the second cylinder. The first sealing ring 4 is arranged in the groove on the inner wall of the first cylinder cavity, and the second sealing ring 5 is arranged in the groove on the second cylinder. Together, they can prevent internal gas leakage.

[0045] As shown in Figure 1 , Figure 2 , the installation groove 33 for installing the trigger rod sleeve 2 is also arranged in the main body 3. The trigger rod sleeve 2 is installed in cooperation with the installation groove 33. The bottom of the installation groove 33 is provided with a vent hole connected with the energy storage gas chamber 34. The bottom of the installation groove 33 is provided with a sealing gasket 6, and the sealing gasket 6 is also provided with a vent hole which is aligned with the vent hole on the installation groove 33. The trigger rod sleeve 2 is installed on the sealing gasket 6. The energy storage gas chamber 34 is arranged in the main body 3. The bottom of the energy storage gas chamber 34 is provided with an outlet which is connected with the high-pressure channel 32. The other end of the high-pressure channel 32 is connected with the vent hole on the bottom of the installation groove 33.

[0046] Among them, the vent hole on the bottom of the installation groove 33, the vent hole on the sealing gasket 6, the vent hole on the second cylinder cavity, and the inlet of the trigger channel 71 on the trigger rod 7 are aligned.

[0047] As shown in Figure 1 , Figure 2 , Figure 4 , when the trigger rod 7 is not aligned with the opening hole 11, the gas in the energy storage gas chamber 34 enters the trigger channel 71 in the trigger rod 7 through the high-pressure channel 32. From the trigger channel 71, the gas enters the balance gas chamber 8 through the through hole on the first cylinder. The balance gas chamber 8 has an upward pressure on the trigger rod 7, so that the hemisphere part against the inner wall of the opening ring 1 has an upward pressure on the opening ring 1. When the opening ring 1 is opened, it needs to be rotated by a certain angle, so that the opening hole 11 is aligned with the trigger rod 7. During the rotation of the opening ring 1, the friction between the inner wall of the opening ring 1 and the hemisphere part is the starting force that needs to be applied by the user.

[0048] As shown in Figure 1 , Figure 3 , Figure 5 , after the opening hole 11 is aligned with the trigger rod 7, the force of the balance gas pressure in the balance gas chamber 8 on the trigger rod 7 and the force of the high-pressure gas entering the trigger channel 71 of the trigger rod 7 from the sealing gasket 6 on the trigger rod 7 together push the trigger rod 7 to move outward. When the second cylinder contacts the top of the second cylinder cavity, the movement stops. The high-pressure gas in the high-pressure channel 32 enters the middle channel 22 in the trigger rod sleeve 2 through the vent hole on the bottom of the installation groove 33 and the vent hole on the sealing gasket 6. From one end of the middle channel 22, it enters the jet channel 31, and finally is sprayed out of the jet port. The jet port acts on the grabbing net, pushing the grabbing net out.

[0049] The utility model discloses a net catcher suitable for various pressure conditions, especially high pressure conditions.

[0050] As shown in Figure 1 , Figure 2 , Figure 6 , when the gas stored in the energy storage air chamber 34 is high pressure gas, and the atmospheric pressure is 0.1 Mpa, the force analysis on the trigger rod 7 is as follows: the pressure on the trigger rod 7 is:

[0051] F1 = (P1×πd1 2 ) / 4

[0052] F2 =(P2×πd2 2 ) / 4

[0053] F3 = P3×π(d3 2 -d2 2 ) / 4

[0054] wherein P1 is the gas pressure of the energy storage air chamber 34 on the trigger rod 7; P2 is the external atmospheric pressure on the trigger rod 7; P3 is the gas pressure in the balance air chamber 8 on the trigger rod 7; d1 is the equivalent action surface diameter of the energy storage air chamber 34 on the trigger rod 7; d2 is the atmospheric pressure action surface diameter on the trigger rod 7; and d3 is the equivalent action surface diameter of the balance air chamber 8 on the trigger rod 7.

[0055] Let F1 = A(F2+ F3), and A = d1 2 / d3 2 is obtained by calculation, so that the final value of A can be controlled by controlling the diameters d1 and d3 on the trigger rod 7, and the trigger rod 7 is in a force balance state when A = 1.

[0056] By reasonably determining the value of A, the counterforce on the trigger rod 7 can be avoided from being too large when the balance air chamber 8 is too large, so that the trigger mechanism cannot be automatically opened, and in order to realize the automatic triggering of the trigger mechanism when the trigger mechanism is not limited by the opening mechanism, the range of A needs to be less than 1; and in order to reduce the opening force as much as possible, in the utility model, the range of A is 0.9-0.99, and preferably 0.95. Embodiment

[0057] The embodiment provides a net catcher, which comprises the trigger mechanism of the net catcher provided in embodiment 1 or embodiment 2, and a catching net is installed at the injection port of the trigger mechanism. In production, the size of the internal balance air chamber is determined according to the performance of the net catcher, so as to control the required starting force, avoid the too large required starting force and not easy operation, and avoid the too small starting force and mis-triggering.

[0058] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on indicate the orientation or positional relation based on the orientation or positional relation shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore can not be understood as the limitation to the utility model. In addition, the term "first", "second" and so on are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and so on can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two. In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the term "mounting", "connection", "connection" should be understood broadly, for example, can be fixedly connected, can also be detachably connected, or integrally connected, can be mechanically connected, can also be electrically connected, can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood through specific circumstances.

[0059] The above is only the preferred embodiment of the utility model, it should be pointed out that, for ordinary skilled in the art, under the premise of not departing from the technical principles of the utility model, can also make a number of improvements and deformations, these improvements and deformations also should be regarded as the protection scope of the utility model.

Claims

1. A net trigger mechanism, characterized in that The net trap comprises: a main body, which is internally provided with an energy storage chamber, a jet channel and a jet port, a trigger mechanism is arranged between the energy storage chamber and the jet channel, and high-pressure gas in the energy storage chamber is jetted through the jet channel to act on a trapping net arranged at the jet port; the trigger mechanism is used for controlling the opening and closing of the energy storage chamber and the jet channel, one end of the trigger mechanism is connected with an opening mechanism, and the other end of the trigger mechanism is in communication with the energy storage chamber; the opening mechanism is used for switching the movement of the trigger mechanism; a balance chamber, in which the high-pressure gas in the energy storage chamber acts on the trigger mechanism.

2. The trap trigger mechanism of claim 1, wherein The trigger mechanism comprises a trigger rod and a trigger rod sleeve, one end of the trigger rod is arranged in the trigger rod sleeve, and the other end of the trigger rod extends out of the trigger rod sleeve and is connected with the opening mechanism.

3. The trap trigger mechanism of claim 2, wherein, An intermediate channel is arranged on one end of the trigger rod sleeve away from the opening mechanism, the intermediate channel realizes the communication between the energy storage chamber and the jet channel, and the trigger rod controls the opening and closing of the intermediate channel.

4. The trap trigger mechanism of claim 2, wherein The trigger rod is in a cylindrical structure with two different diameters, i.e., a first cylinder and a second cylinder, the diameter of the first cylinder is smaller than that of the second cylinder, the end of the first cylinder is a hemispherical structure, i.e., a hemispherical part, the hemispherical part is connected with the opening mechanism, through holes are arranged on the two sides of one end of the first cylinder connected with the second cylinder, the second cylinder is provided with a trigger channel which penetrates the second cylinder from top to bottom, one end of the trigger channel is in communication with the through hole, and the other end of the trigger channel is in communication with the energy storage chamber.

5. The trap trigger mechanism of claim 4, wherein, The trigger rod sleeve is internally provided with a stepped cylindrical cavity which penetrates the trigger rod sleeve from top to bottom and is used for mounting the trigger rod, the stepped cylindrical cavity comprises a first cylindrical cavity and a second cylindrical cavity, the first cylindrical cavity is used for mounting the first cylinder, and the second cylindrical cavity is used for mounting the second cylinder; a part of the first cylinder is located in the second cylindrical cavity, and a gap-shaped balance chamber exists in the second cylindrical cavity, the through hole is in communication with the balance chamber.

6. The trap trigger mechanism of claim 2, wherein At least two sealing rings are arranged between the trigger rod and the trigger rod sleeve.

7. The trap trigger mechanism of claim 1, wherein The main body is further provided with a mounting groove which is used for mounting the trigger mechanism, a sealing gasket is arranged at the bottom of the mounting groove, and the trigger mechanism is mounted on the sealing gasket.

8. The trap trigger mechanism of claim 7, wherein, Through holes are arranged on the bottom of the mounting groove and the sealing gasket, and the through holes on the two are arranged in alignment.

9. The trap trigger mechanism of claim 1, wherein, The opening mechanism comprises an opening ring, the opening ring is provided with an opening hole, when the opening hole is aligned with the trigger mechanism, the high-pressure gas in the energy storage chamber pushes the trigger mechanism to move outward, thereby realizing the communication between the jet channel and the energy storage chamber.

10. A portable net trap, characterized by The net trap trigger mechanism comprises any one of claims 1-9.

Images