Explosive bolt catcher and catch device

Abstract

The present invention discloses an explosive bolt catcher and a capture device, belonging to the field of rocket structure design. The explosive bolt catcher comprises a capture body and a capture cavity arranged in the capture body; the capture cavity is a cavity with a single-sided opening; the opening surface of the capture cavity corresponds to the end of the explosive bolt screw; the bolt catcher is configured such that when the explosive bolt is ignited and separated, the explosive bolt screw and the nut are embedded in the capture cavity and are fixedly connected to the bolt catcher in a tensioning manner, so as to capture the explosive bolt screw equipped with the nut. The present invention can realize the effective capture of explosive bolts, and has a simple structure, low cost and high reliability.

Description

Technical Field

[0001] The invention relates to the field of rocket structure design, and in particular to an explosive bolt catcher and a catch device. Background Art

[0002] Explosive bolts are similar in shape to ordinary bolts, but they are equipped with explosives and igniters, and are mostly used to connect separation surfaces at multiple points. When detonating, since the separation body of the explosive bolt is a high-speed moving object, if no buffering, energy absorption and collection are performed, it will produce greater impact, pollution and uncertainty. Therefore, when using explosive bolts, it is generally necessary to design a capture device simultaneously.

[0003] The existing utility model with application number 201420604096.8 discloses an explosive bolt capture device, which uses a capture piece to capture the explosive bolt. However, in this technical solution, the structure design of the capture device is relatively complex, and it is not possible to ensure complete capture.

[0004] In view of this, it is necessary to provide a new technical solution to solve the above problems. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides an explosive bolt catcher and a capturing device, which can effectively capture explosive bolts and have a simple structure, low cost and high reliability.

[0006] An explosive bolt catcher comprises: a capture body and a capture cavity arranged in the capture body; the capture cavity is a cavity with a single-side opening; the opening surface of the capture cavity corresponds to the end of the explosive bolt screw; the bolt catcher is configured such that when the explosive bolt is ignited and separated, the explosive bolt screw and nut are embedded in the capture cavity and fixedly connected to the bolt catcher in a tensioning manner, thereby achieving the capture of the explosive bolt screw equipped with the nut.

[0007] Preferably, the closed end face of the bolt catcher opposite to the open end of the capture chamber is an energy absorbing buffer wall; the cross-section of the open end of the capture chamber is adapted to the explosive bolt screw equipped with a nut; the port size of the capture chamber close to one end of the energy absorbing buffer wall is smaller than the size of the open end of the capture chamber.

[0008] Preferably, the capture chamber comprises a guide chamber section and a brake capture chamber section which are sequentially connected inward from the opening.

[0009] Preferably, the inner wall of the guide cavity section is adapted to the shape and size of the outside of the nut, so that the explosive bolt screw equipped with the nut can slide along the guide cavity section; the outer end of the braking capture cavity section has the same size and shape as the guide cavity section, and the inner end size of the braking capture cavity section is smaller than the outer size of the nut.

[0010] Preferably, the guide cavity section is a cylindrical or polygonal column structure; the brake capture cavity section is a truncated cone or polygonal cone structure.

[0011] Preferably, the capture body is made of rubber or silicone.

[0012] Preferably, the bolt catcher also includes an energy absorbing block arranged in the capture cavity; the energy absorbing block is configured to be penetrated by the explosive bolt screw equipped with a nut and wrapped around the outside of the explosive bolt screw and / or the nut when the explosive bolt is ignited and separated.

[0013] Preferably, the energy absorbing block is arranged in the capture cavity at the end of the screw rod of the explosive bolt equipped with a nut.

[0014] Preferably, the energy absorbing block is made of rubber or silicone.

[0015] According to another aspect of the present invention, there is provided an explosive bolt capture device, comprising the bolt catcher and a capture cylinder; the capture cylinder is provided with a accommodating chamber for accommodating an explosive bolt screw equipped with a nut; the bolt catcher is arranged in the accommodating chamber; the explosive bolt capture device is configured to capture the explosive bolt screw and nut by means of the bolt catcher when the explosive bolt is ignited and separated.

[0016] Compared with the prior art, this application has at least the following beneficial effects:

[0017] 1. The bolt catcher of the present invention can effectively capture explosive bolts and has a simple structure, low cost and high reliability.

[0018] 2. The bolt catcher of the present invention can rely on the impact force generated when the explosive bolt is detonated to make the screw rod of the explosive bolt equipped with a nut embedded in the bolt catcher and fixedly connected with the bolt catcher in a tensioning manner, and adopts a capture principle different from the prior art to achieve effective capture of the screw rod of the explosive bolt equipped with a nut.

[0019] 3. The bolt catcher of the present invention includes an energy absorbing block. When the explosive bolt is detonated, the energy absorbing block can be penetrated by the explosive bolt screw equipped with a nut and wrapped around the outside of the explosive bolt screw and / or the nut, further ensuring the success rate of capturing the explosive bolt screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the appearance structure of a bolt catcher embodiment 1 of the present invention;

[0022] Figure 2 It is a cross-sectional structural schematic diagram of embodiment 1 of the bolt catcher of the present invention;

[0023] Figure 3 This is a schematic diagram of the overall structure of Embodiment 1 of the explosive bolt capturing device of the present invention;

[0024] Figure 4 This is a schematic structural diagram of the explosive bolt capturing device after capturing the screw rod of the explosive bolt in Example 1 of the present invention;

[0025] Figure 5 It is a cross-sectional structural schematic diagram of Embodiment 2 of the bolt catcher of the present invention;

[0026] Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of the explosive bolt capturing device of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the explosive bolt capturing device after capturing the screw rod of the explosive bolt in Example 1 of the present invention.

[0028] The above drawings include the following reference numerals:

[0029] 11. Explosive bolt head; 12. Nut; 13. Explosive bolt screw; 21. Bolt catcher; 22. Fixing piece; 23. Capture cylinder; 24. Accommodating chamber; 31. Fixing cylinder; 32. Installation chamber; 201. Capture body; 202. Capture chamber; 203. Energy absorbing block; 211. Guide chamber section; 212. Braking capture chamber section; 213. Energy absorbing buffer wall. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0031] The existing method of using capture pieces to capture explosive bolts is complex in structure, and due to the large impact of the explosive bolts when they explode, they are prone to bounce or recoil after hitting the end face of the capture tube, thereby causing capture failure.

[0032] The explosive bolt catcher of the present invention adopts a buffering energy absorption method, and uses a bolt catcher made of plastic material to brake the explosive bolt screw, thereby reducing the initial velocity of the explosive bolt screw. At the same time, relying on the deformation effect of the bolt catcher, the bolt catcher and the explosive bolt screw are tensioned and combined, thereby capturing the explosive bolt screw. At the same time, at the end of the movement of the explosive bolt screw, the closed end surface of the bolt catcher is deformed to achieve buffering energy absorption of the explosive bolt screw, effectively avoiding the explosive bolt screw from rebounding, and finally achieving effective capture of the explosive bolt screw.

[0033] Example 1

[0034] like Figure 1 and Figure 2 As shown, an explosive bolt catcher includes a capture body 201 and a capture chamber 202 arranged in the capture body 201; the capture chamber 202 is a cavity with a single-side opening; the opening surface of the capture chamber 202 corresponds to the end of the explosive bolt screw 13; the bolt catcher is configured so that when the explosive bolt is ignited and separated, the explosive bolt screw 13 and the nut 12 are embedded in the capture chamber 202 and are fixedly connected to the bolt catcher in a tensioning manner, thereby realizing the capture of the explosive bolt screw 13 equipped with the nut 12.

[0035] As another embodiment of the present invention, the closed end surface of the bolt catcher 21 opposite to the open end of the capture chamber 202 is an energy absorbing buffer wall 213; the cross-sectional size of the open end of the capture chamber 202 is adapted to the explosive bolt screw 13 equipped with the nut 12; the size of the capture chamber 202 near one end of the energy absorbing buffer wall 213 is smaller than the size of its open end, so that the capture chamber 202 depends on its size to change from large to small, ensuring that the explosive bolt screw 13 equipped with the nut 12 can effectively squeeze the capture body 201, and then rely on the generated squeezing force and friction force to achieve the capture of the explosive bolt screw 13 equipped with the nut 12. It should be noted that the capture body 201 is made of a deformable material, and can be deformed under the impact of the explosive bolt screw 13 equipped with the nut 12 by relying on the impact force generated when the explosive bolt is detonated. The capture body 201 can be made of a metal material or a non-metal material that deforms under sufficient impact. For example, metal materials that can produce deformation, such as aluminum, copper, iron, gold, and silver, can be selected, and non-metal materials that can produce deformation, such as plastic, rubber, and silicone can also be used.

[0036] The energy absorbing buffer wall 213 is used for energy absorbing buffering of the explosive bolt screw 13 equipped with the nut 12 at the end of the movement. In order to ensure that the energy absorbing buffer wall 213 has a sufficiently large buffering performance, it needs to ensure a certain thickness to avoid being penetrated by the explosive bolt screw 13 equipped with the nut 12 and causing capture failure. It should be noted that the energy absorbing buffer wall 213 is made of a material with a certain elasticity to ensure that it has sufficient buffering performance. The energy absorbing buffer wall 213 is preferably made of rubber or silicone. That is, the energy absorbing buffer wall 213 is formed integrally with the capture main body 201 as a part of the capture main body 201.

[0037] In other embodiments of the present invention, the energy absorbing buffer wall 213 can also be placed inside the capture body 201 as a separate structure and fixedly connected to the capture body 201. This solution allows the energy absorbing buffer wall 213 and the capture body 201 to be made of different materials, with a wide range of material choices, thereby achieving optimal buffering performance. The energy absorbing buffer wall 213 is preferably made of rubber or silicone material.

[0038] In addition, to ensure that the bolt catcher has both the capturing performance and the buffering performance, the bolt catcher can be an integrated structure made of rubber or silicone material. That is, the energy absorbing buffer wall 213 is a part of the capturing body 201, and is integrally formed with the capturing body 201, and the two are made of the same material.

[0039] It should be noted that, while meeting the requirements of strength and deformation, the bolt catcher 21 can also be made of metal or non-metallic materials with certain plasticity, such as: low-carbon steel, copper, aluminum, gold, silver and other metal materials or rubber, plastic and other non-metallic materials.

[0040] The capture chamber 202 includes a guide chamber section 211 and a brake capture chamber section 212 which are sequentially connected inward from an opening.

[0041] The inner wall of the guide cavity section 211 is adapted to the shape and size of the outer portion of the nut 12, so that the explosive bolt screw 13 equipped with the nut 12 can slide in the guide cavity section 211. The guide cavity section 211 can guide the explosive bolt screw 13 equipped with the nut 12 during movement, ensuring that the explosive bolt will not deviate.

[0042] Preferably, the outer end of the brake capture cavity section 212 has the same size and shape as the guide cavity section 211. The inner end of the brake capture cavity section 212 is smaller than the outer size of the nut 12, so that the brake capture cavity section 212 can slow down the speed of the explosive bolt screw 13 equipped with the nut 12 to make it embedded. It should be noted that the size of the outer end of the brake capture cavity section 212 and the size of the inner end should have a sufficiently large difference to ensure that the inner wall of the brake capture cavity section 212 has a sufficiently large inclination angle to improve the capture success rate.

[0043] Preferably, the guide cavity section 211 is a cylindrical or polygonal column structure; the braking capture cavity section 212 is a truncated cone or polygonal cone structure.

[0044] like Figure 3 and Figure 4 As shown, an explosive bolt capture device includes a bolt catcher 21 and a capture cylinder 23; a receiving chamber 24 for receiving an explosive bolt screw 13 equipped with a nut 12 is provided in the capture cylinder 23; the bolt catcher 21 is arranged in the receiving chamber 24; the explosive bolt capture device is configured to capture the explosive bolt screw 13 and the nut 12 by using the bolt catcher 21 when the explosive bolt is ignited and separated.

[0045] Preferably, the end of the capture cylinder 23 has a port for assembling the nut 12 and the explosive bolt screw 13 and for inserting the bolt capturer 21, and a fixing member 22 is detachably fixed to the port.

[0046] In addition, the explosive bolt capturing device further comprises: a fixed cylinder 31. A mounting cavity 32 for accommodating and mounting the explosive bolt head 11 is arranged in the fixed cylinder 31. The mounting cavity 32 has a port for the explosive bolt head 11 to be placed.

[0047] Example 2

[0048] Embodiment 2 is the same as Embodiment 1, except that:

[0049] like Figure 5-7 As shown, the bolt catcher 21 also includes an energy absorbing block 203 disposed in the capture chamber 202. The energy absorbing block 203 is configured to penetrate and wrap around the outside of the explosive bolt screw 13 and the nut 12 under the impact of the explosive bolt screw 13 and the nut 12 when the explosive bolt is ignited and separated.

[0050] The energy absorbing block 203 is disposed in the capture cavity 202 at the end of the explosive bolt screw 13 equipped with the nut 12. It should be noted that, depending on the size of the explosive bolt and the impact force generated during the explosion, energy absorbing blocks 203 of different thicknesses can be provided. Depending on the thickness of the energy absorbing block 203, it can be provided only in the brake capture cavity section 212, or in the brake capture cavity section 212 and the guide cavity section 211.

[0051] Preferably, the energy absorbing block 203 is made of rubber or silicone.

[0052] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0053] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0054] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An explosive bolt catcher, characterized in that: include: A capture body and a capture cavity disposed in the capture body; The capture chamber is a cavity with a single-side opening; The opening surface of the capture cavity corresponds to the end of the explosive bolt screw; the explosive bolt catcher is configured such that when the explosive bolt is ignited and separated, the explosive bolt screw and the nut are embedded in the capture cavity and are fixedly connected to the explosive bolt catcher in a tensioning manner, thereby capturing the explosive bolt screw equipped with the nut; The closed end surface of the explosive bolt catcher opposite to the open end of the capture chamber is an energy absorbing buffer wall; the cross section of the open end of the capture chamber is adapted to the explosive bolt screw equipped with a nut; the size of the capture chamber port near one end of the energy absorbing buffer wall is smaller than the size of the capture chamber open end; The explosive bolt catcher also includes an energy absorbing block arranged in the capture cavity; the energy absorbing block is configured to be penetrated by the explosive bolt screw equipped with a nut and wrapped around the outside of the explosive bolt screw and / or the nut when the explosive bolt is ignited and separated.

2. The explosive bolt catcher according to claim 1, characterized in that: The capture chamber comprises a guide chamber section and a brake capture chamber section which are sequentially connected inwards from an opening.

3. The explosive bolt catcher according to claim 2, characterized in that: The inner wall of the guide cavity section is adapted to the shape and size of the outside of the nut, so that the explosive bolt screw equipped with the nut can slide along the guide cavity section; the outer end of the brake capture cavity section has the same size and shape as the guide cavity section, and the inner end size of the brake capture cavity section is smaller than the outer size of the nut.

4. The explosive bolt catcher according to claim 3, characterized in that: The guide cavity section is a cylindrical or polygonal column structure; the brake capture cavity section is a truncated cone or polygonal cone structure.

5. The explosive bolt catcher according to claim 3, characterized in that: The capturing body is made of rubber or silicone.

6. The explosive bolt catcher according to any one of claims 1 to 5, characterized in that: The energy absorbing block is arranged in the capture cavity at the end of the screw rod of the explosive bolt equipped with a nut.

7. The explosive bolt catcher according to any one of claims 1 to 5, characterized in that: The energy absorbing block is made of rubber or silicone.

8. An explosive bolt capture device, characterized in that: It comprises the explosive bolt catcher and a capture cylinder as described in any one of claims 1 to 7; the capture cylinder is provided with a accommodating chamber for accommodating an explosive bolt screw equipped with a nut; the explosive bolt catcher is arranged in the accommodating chamber; the explosive bolt capture device is configured to capture the explosive bolt screw and nut by using the explosive bolt catcher when the explosive bolt is ignited and separated.

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