Double-Picatinny guide rail locking clamp for disassembling and assembling large module

By designing a double Picatinny rail locking fixture, using components such as locking keys and special-shaped bosses, the eccentricity and interference problems of large-scale module installations in the prior art are solved, and a stable and safe installation and disassembly process is achieved.

CN222211413UActive Publication Date: 2024-12-20SUZHOU RONGHAI MICRO ROBOT CO LTD
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Patent Information

Application Number
CN202421119711.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-22
Publication Date
2024-12-20
Estimated Expiration
2034-05-22

AI Technical Summary

Technical Problem

The existing Picatinny fixtures have problems of eccentric installation, interference and operation difficulty when installing large modules, and cannot effectively fix large modules with uncertain center of gravity.

Method used

A double Picatinny guide rail locking fixture was designed, using a platform and fixture body structure, and the active block and follower block are realized by locking keys, special-shaped bosses and grooves, step holes and plug screws. Synchronize close and away to ensure stable clamping and removal of the fixture.

Benefits of technology

It realizes stable installation and disassembly of large modules, avoids interference and operation difficulties, improves installation stability and safety, and ensures efficient use and safety of fixtures.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of Picatinny guide rail clamps, in particular to a double-Picatinny guide rail locking clamp for disassembling and assembling a large-scale module, which comprises a carrying platform, two parallel Picatinny guide rails are fixedly arranged on the top of the carrying platform, two clamp bodies are respectively arranged on the two Picatinny guide rails, and the two clamp bodies are arranged on the carrying platform. The tops of the four clamp bodies are connected with a carrying module at the same time, and a locking key is arranged on one side of each clamp body. The clamp body comprises a center block connected to the carrying module. Through the design that a group of picatinny guide rails are matched with two groups of clamp bodies, when the clamp bodies are screwed by means of a locking key, the driving block and the driven block can be synchronously close to the center block, different from single-side movement of an existing clamp, the problems of vertical interference and inconvenience in operation are avoided, and the production efficiency is improved. And therefore, the Picatinny guide rail is stably clamped by the driving block and the driven block, the operation is simple and rapid, and the stability after installation is relatively high.
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Description

Technical Field

[0001] The utility model relates to the technical field of Picatinny rail clamps, and in particular to a double Picatinny rail locking clamp used for disassembling and assembling large modules. Background Art

[0002] Picatinny rails are mainly used on guns, with additional functions such as gun sights, infrared indicators, and night vision goggles. They are also used on some equipment platforms to achieve rapid installation and replacement of modules. These modules have one characteristic, which is that they are relatively light and small in size.

[0003] Currently, a single Picatinny clamp has only one movable surface relative to its own center (mostly the smaller side is the movable surface). Therefore, when used with a single guide rail and clamp, they are all installed eccentrically and then clamped after alignment by adjusting bolts or a quick wrench. When it comes to heavier and larger parts, taking into account the uncertainty of the center of gravity of larger and heavier modules, two Picatinny rails are needed for installation. The center of gravity of the module is in the middle of the two Picatinny rails to ensure installation stability.

[0004] However, the existing Picatinny clamps (such as Fig.11 , Fig.12 It is not feasible to simultaneously fix and install two Picatinny clamps (as shown in the figure), that is, the clamps are fixed on the module and the rails are fixed on the platform. Although the center spacing is the same, the two existing Picatinny clamps are eccentrically installed when clamping the Picatinny rails. When the center symmetry is adopted, there is interference between the two clamps and the two rails (such as Fig.11 As shown in the figure, the fixture cannot be installed, and two fixtures are used in the same direction (as shown in the figure). Fig.12 Although the fixture can be installed as shown, it is difficult to lock one of the fixture bodies. Therefore, the existing leather rail Tinny rail fixture structure obviously cannot meet the installation and fixation requirements of large modules, and the installation effect is poor. Utility Model Content

[0005] The utility model provides a double Picatinny rail locking clamp for disassembling and assembling a large module, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A double Picatinny rail locking clamp for disassembling and assembling a large module, comprising a loading platform, two parallel Picatinny rails are fixedly mounted on the top of the loading platform, two clamp bodies are respectively arranged on the two Picatinny rails, and the tops of the four clamp bodies are simultaneously connected to a loading module, and a locking key is respectively arranged on one side of each clamp body;

[0008] The clamp body comprises a central block connected to the mounting module, an active block arranged on one side of the central block, a driven block arranged on the other side of the central block, a locking screw movably passing through the driven block and the central block, and a special-shaped boss connected to one end of the locking screw, the other end of the locking screw is threadedly connected to the active block, and one end of the locking key is adapted to fit the special-shaped boss;

[0009] Two stepped holes are respectively provided on the left and right sides of the central block, and every two stepped holes correspond to each other and are interconnected, and positioning expansion components are respectively arranged in the stepped holes on the left and right sides.

[0010] Preferably, the surface of the center block is connected with a plurality of first positioning bosses disposed at intervals, and the surface of the Picatinny rail is connected with a plurality of second positioning bosses disposed at intervals, and the first positioning boss is arranged between every two adjacent second positioning bosses on the Picatinny rail.

[0011] Preferably, the positioning expansion assembly includes plug screws respectively connected to the stepped holes on the left and right sides and springs respectively sleeved on the outer walls of multiple plug screws, the springs are arranged in the stepped holes, and the plug screws on the left and right sides respectively penetrate the active block and the driven block.

[0012] Preferably, a stage is provided at one end of the locking key, a special-shaped groove is opened at one end of the stage, and the inner cavity of the special-shaped groove is adapted to the special-shaped boss.

[0013] Preferably, a stepped hole is formed through the surface of the driven block, the locking screw is inserted into the stepped hole, and the step is adapted to fit inside the stepped hole.

[0014] Preferably, a threaded hole is formed through the surface of the active block, and one end of the locking screw is threadedly connected in the threaded hole. A through hole is formed through the surface of the center block, and the through hole is coaxially arranged with the step hole and the threaded hole.

[0015] Preferably, a countersunk hole is respectively opened on one side of the active block and the driven block, the countersunk hole corresponds to the stepped hole, and the plug screw is connected in the stepped hole through the countersunk hole.

[0016] Preferably, the other side surfaces of the active block and the driven block are respectively provided with positioning grooves communicated with the countersunk hole, and one end of the spring away from the stepped hole is arranged in the positioning groove.

[0017] Preferably, mounting holes are formed through the upper and lower ends of the center block, fixing screws are provided in the mounting holes, and the center block is fixedly connected to the mounting module via the fixing screws.

[0018] The technical solution of the present application also provides a method for using a double Picatinny rail locking clamp for disassembling and assembling a large module, comprising the following steps:

[0019] S1. Insert one end of the locking key into the step hole to cause the special-shaped boss to be arranged inside the special-shaped groove;

[0020] S2. By screwing the locking key, the locking screw rotates with the cooperation of the special-shaped boss and the special-shaped groove, and the other end is gradually screwed into the threaded hole, so that the limit ring at the special-shaped boss can contact the step hole, so that the active block and the driven block are synchronously close to the center block, completing the clamping connection between the clamp body and the Picatinny rail;

[0021] S3. When disassembling, the locking key needs to be turned in the opposite direction so that one end of the locking screw can be gradually screwed out of the threaded hole. Then the active block and the driven block can move away from each other under the action of the spring, completing the unfolding state of the clamp body and promoting the removal between the clamp body and the Picatinny rail.

[0022] By adopting the above technical solution, the beneficial effects achieved by the utility model are:

[0023] In the utility model, a group of Picatinny rails are matched with two groups of clamp bodies, so that when the clamp bodies are tightened with the help of a locking key, the active block and the driven block can be synchronously moved close to the center block. Different from the unilateral movement of the existing clamps, the problems of upper and lower interference and inconvenient operation are avoided, thereby achieving the Picatinny rails being stably clamped by the active block and the driven block. The operation is simple and quick, and the stability is strong after installation.

[0024] In the utility model, after a group of Picatinny rails are matched with two groups of clamp bodies, and then by matching the connection between the first positioning boss and the second positioning boss, it can be further ensured that when installing a heavy or large-volume mounting module, the stability is strong and it is not easy to loosen, thereby avoiding the problem of damage to the clamp body or the mounting module.

[0025] In the utility model, the special-shaped boss on the locking screw is adapted to the special-shaped groove on the locking key, so that the clamp body can only be removed with the help of the corresponding locking key when in use, with a high safety factor and is not easy to be removed by people.

[0026] In the utility model, a handle is movably connected to one side of the locking key, so that when the top side facing the loading platform is inclined to a right angle, the handle can be unfolded and used, thereby driving the locking key to rotate. On the one hand, it is convenient to rotate the locking key, and on the other hand, it can improve the efficiency of disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the bottom structure of the mounting module of the utility model;

[0029] Figure 3 This is a schematic diagram of the exploded structure of the clamp body of the utility model;

[0030] Figure 4 This is a schematic diagram of the step hole structure of the utility model;

[0031] Figure 5 This is a schematic diagram of the front cross-sectional clamping structure of the clamp body of the utility model;

[0032] Figure 6 This is a schematic diagram of the front cross-sectional structure of the clamp body of the utility model;

[0033] Figure 7 It is a schematic diagram of the clamping structure of the clamp body of the utility model in a top view;

[0034] Figure 8 It is a schematic diagram of the expanded structure of the clamp body in a top view of the utility model;

[0035] Fig. 9 This is a schematic diagram of the locking key structure in the second embodiment of the utility model;

[0036] Fig.10 This is a schematic diagram of the unfolding structure of the locking key in the second embodiment of the utility model;

[0037] Fig.11 It is a schematic diagram of the central symmetrical installation structure of two existing Picatinny clamps;

[0038] Fig.12 Schematic diagram of the installation structure of two existing Picatinny clamps in the same direction.

[0039] In the picture: 1. Carrying platform; 2. Picatinny rail;

[0040] 3. Clamp body; 31. Center block; 32. Active block; 33. Driven block; 34. Locking screw; 35. Special-shaped boss;

[0041] 4. Mounting module; 5. Locking key; 6. Step hole; 7. Plug screw; 8. Spring; 9. Step; 10. Special-shaped groove; 11. Step hole; 12. Threaded hole; 13. Countersunk hole; 14. Positioning groove; 15. Mounting hole; 16. Fixing screw; 17. First positioning boss; 18. Through hole; 19. Storage slot; 20. Handle; 21. Elastic socket. DETAILED DESCRIPTION

[0042] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. Embodiment 1

[0044] like Figure 1-10 As shown, the utility model provides a double Picatinny rail locking clamp for disassembling and assembling a large module, comprising a carrying platform 1, on the top of which two parallel Picatinny rails 2 are fixedly installed, the width of the Picatinny rail 2 is 21.2 mm, in order to minimize the size, the maximum opening size is designed to be 22.1 mm, and in actual production, it can be adjusted according to actual conditions, two clamp bodies 3 are respectively arranged on the two Picatinny rails 2, and the tops of the four clamp bodies 3 are simultaneously connected to a carrying module 4, and a locking key 5 is respectively arranged on one side of each clamp body 3; The tool body 3 includes a central block 31 connected to the mounting module 4, an active block 32 arranged on one side of the central block 31, a driven block 33 arranged on the other side of the central block 31, a locking screw 34 movably passing through the driven block 33 and the central block 31, and a special-shaped boss 35 connected to one end of the locking screw 34, the other end of the locking screw 34 is threadedly connected to the active block 32, and one end of the locking key 5 is adapted to the special-shaped boss 35; two stepped holes 6 are respectively provided on the left and right sides of the central block 31, and every two stepped holes 6 correspond to each other and are connected to each other, and positioning expansion components are respectively provided in the stepped holes 6 on the left and right sides.

[0045] Specifically, the special-shaped boss 35 is not limited to the rectangular body shown in the figure, but can also be a triangle or a polygon, etc. Therefore, the special-shaped groove 10 at one end of the locking key 5 is adapted to the special-shaped boss 35 and is not limited to a single shape of groove.

[0046] To be more specific, all parts of the clamp body 3 except the locking screw 34 are made of 7075-T6 aviation aluminum material, which ensures the overall structural strength while being light in weight, and the active block 32 and the driven block 33 are provided with a 0.8 mm chamfer on the end side close to the Picatinny rail 2 to better align with the Picatinny rail 2.

[0047] In this embodiment, the positioning and expansion assembly includes plug screws 7 respectively connected to the stepped holes 6 on the left and right sides and springs 8 respectively sleeved on the outer walls of multiple plug screws 7, the springs 8 are arranged in the stepped holes 6, and the plug screws 7 on the left and right sides respectively penetrate the active block 32 and the driven block 33, the active block 32 and the driven block 33 are respectively provided with countersunk holes 13 on one side, the countersunk holes 13 correspond to the stepped holes 6, and the plug screws 7 are connected to the stepped holes 6 through the countersunk holes 13, the active block 32 and the driven block 33 are respectively provided with positioning grooves 14 communicating with the countersunk holes 13 on the other side, and the end of the spring 8 away from the stepped hole 6 is arranged in the positioning groove 14.

[0048] like Figure 5 and Figure 6 As shown, specifically, through the design of the driving screw 7 and the spring 8, after the driving screw 7 penetrates the active block 32 and the driven block 33 and is connected to the center block 31, a certain distance is left between one end of the driving screw 7 arranged in the countersunk hole 13 and the inner wall of the countersunk hole 13, so that the distance can satisfy the active block 32 and the driven block 33 to move to both sides at the same time, thereby realizing the maximum expansion of the active block 32 and the driven block 33, and utilizing the design of the positioning groove 14, the spring 8 can accurately push the active block 32 and the driven block 33 to move.

[0049] In this embodiment, a step 9 is provided at one end of the locking key 5, a special-shaped groove 10 is opened at one end of the step 9, the inner cavity of the special-shaped groove 10 is adapted to the special-shaped boss 35, a step hole 11 is opened through the surface of the driven block 33, the locking screw 34 is inserted into the step hole 11, and the step 9 is adapted to the inside of the step hole 11.

[0050] like Figure 3 and Figure 4 As shown, specifically, the design of the step hole 11 allows the special-shaped boss 35 to be disposed inside the step hole 11, thereby reducing exposed details and facilitating the step 9 disposed in the step hole 11 to loosen or tighten the special-shaped boss 35.

[0051] To be more specific, when the active block 32 and the driven block 33 are close to each other to realize the clamping process, the stage 9 can be in contact with the surface of the driven block 33, and when the locking screw 34 is loosened, the active block 32 and the driven block 33 are moved away from each other by the force of the spring 8, and the surface of the driven block 33 can always be in contact with the stage 9, and when a gap is generated between the stage 9 and the surface of the driven block 33, it means that the active block 32 and the driven block 33 have been expanded to the maximum position, which is used to prompt the operator that there is no need to continue turning the locking key 5.

[0052] In this embodiment, a threaded hole 12 is formed through the surface of the active block 32, and one end of the locking screw 34 is threadedly connected in the threaded hole 12. A through hole 18 is formed through the surface of the center block 31, and the through hole 18 is coaxially arranged with the step hole 11 and the threaded hole 12.

[0053] Specifically, a threaded section is provided at one end of the locking screw 34, and the threaded section is threadedly connected in the threaded hole 12. By utilizing the design of the threaded hole 12, when the locking screw 34 rotates, the locking screw 34 can gradually disengage from or enter the interior of the threaded hole 12, so that the active block 32 and the driven block 33 can approach or move away from each other when the locking screw 34 rotates, ensuring that both sides of the clamp body 3 can move, thereby promoting stable clamping and preventing loosening problems.

[0054] In this embodiment, mounting holes 15 are formed through the upper and lower ends of the center block 31, and fixing screws 16 are provided in the mounting holes 15. The center block 31 is fixedly connected to the mounting module 4 through the fixing screws 16. Specifically, the design of the fixing screws 16 facilitates the disassembly and assembly of the clamp body 3 and the mounting module 4.

[0055] In this embodiment, the surface of the center block 31 is connected with a plurality of first positioning bosses 17 that are spaced apart, and the surface of the Picatinny rail 2 is connected with a plurality of second positioning bosses that are spaced apart. The first positioning boss 17 is arranged between every two adjacent second positioning bosses on the Picatinny rail 2. Specifically, through the design of the first positioning boss 17 and the second positioning boss, the installation accuracy is guaranteed when the Picatinny rail 2 is matched with the clamp body 3, thereby ensuring the stability of the mounting module 4. Embodiment 2

[0056] like Figure 1-10As shown, based on the first embodiment, a stage 9 is provided at one end of the locking key 5, a special-shaped groove 10 is opened at one end of the stage 9, and the inner cavity of the special-shaped groove 10 is adapted to the special-shaped boss 35; a storage groove 19 is opened at the end of the locking key 5 away from the special-shaped groove 10, and a handle 20 is rotatably connected to one end of the storage groove 19, and the handle 20 can be manually unfolded or reset, and an elastic socket 21 is installed in the storage groove 19, which is used to fix the handle 20 after the handle 20 is manually reset, so as to avoid the problem of the handle 20 moving after being placed.

[0057] Specifically, when the inclined surface on the top side of the carrying platform 1 is inclined to a right angle, when the locking key 5 is manually turned, it is easy for the human hand to touch the carrying platform 1. In order to avoid the touching problem, the locking key 5 needs to be repeatedly turned at the same position, which may easily lead to slow disassembly and assembly efficiency. Therefore, the handle 20 can be unfolded so that the handle 20 is spaced a distance from one side of the carrying platform 1 after being unfolded, and then the handle 20 can be manually turned so that the handle 20 can drive the locking key 5 to rotate, thereby realizing the disassembly and assembly of the clamp body 3 and improving the disassembly and assembly efficiency.

[0058] In this embodiment, when the handle 20 is reset to the inside of the storage groove 19, the handle 20 is not exposed as a whole, thereby reducing exposed details, making it easy to carry while also ensuring the aesthetics and comfort of the locking key 5.

[0059] In this embodiment, after the handle 20 is reset to the inside of the storage groove 19, a certain gap is left at one end of the handle 20 from the inner wall of the storage groove 19. On the one hand, the gap allows the handle 20 to be unfolded, and on the other hand, the gap allows the handle 20 to be manually pulled to cause it to unfold outward.

[0060] In this embodiment, the handle 20 is made of 7075-T6 aviation aluminum material, so that the overall structural strength of the handle 20 can be ensured while also making the overall weight of the locking key 5 lighter, making it easier for people to carry around.

[0061] like Figure 1-8 As shown, the utility model also provides a method for using the above-mentioned double Picatinny rail locking clamp for disassembling and assembling a large module, comprising the following steps:

[0062] S1, insert one end of the locking key 5 into the step hole 11, so that the special-shaped boss 35 is arranged inside the special-shaped groove 10;

[0063] The locking key 5 is in a state of manual storage, and is taken out manually and used by hand when needed, which can prevent others from dismantling the clamp body 3 and has a high safety factor.

[0064] S2. By screwing the locking key 5, after it rotates, under the cooperation of the special-shaped boss 35 and the special-shaped groove 10, the locking screw 34 rotates accordingly, and the other end is gradually screwed into the threaded hole 12, so that the limit ring at the special-shaped boss 35 can contact the step hole 11, so that the active block 32 and the driven block 33 are synchronously close to the center block 31, and the clamping connection between the clamp body 3 and the Picatinny rail 2 is completed;

[0065] Among them, after the clamp body 3 is clamped and connected with the Picatinny rail 2, the connection between the first positioning boss 17 and the second positioning boss before use can ensure that when the mounting module 4 with heavier mass or larger volume is installed, it has strong stability and is not easy to loosen, thereby avoiding the problem of damage to the clamp body 3 or the mounting module 4. After the clamp body 3 is clamped, the plug screw 7 is completely set in the countersunk hole 13 without leaking out, and the special-shaped boss 35 is completely set in the step hole 11 without leaking out, thereby reducing exposed details and ensuring the aesthetics of the clamp body 3.

[0066] S3. When disassembling, the locking key 5 needs to be turned in the opposite direction so that one end of the locking screw 34 can be gradually screwed out of the threaded hole 12. Then the active block 32 and the driven block 33 can move away from each other through the force of the spring 8, completing the unfolded state of the clamp body 3, thereby facilitating the disassembly between the clamp body 3 and the Picatinny rail 2.

[0067] Among them, when the active block 32 and the driven block 33 are moved away from each other with the help of the force of the spring 8, the screw 7 is used to guide and limit the maximum expansion degree, thereby promoting the removal between the clamp body 3 and the Picatinny rail 2, and then realizing the disassembly of the mounting module 4.

[0068] Based on the above method of use, before use, the clamp body 3 needs to be assembled as shown in the figure. After assembly, one end of the locking screw 34 can be connected to the threaded hole 12, and the special-shaped boss 35 at the other end is completely set in the step hole 11 without leakage, and the active block 32 and the driven block 33 can be pushed and abutted against one end of the plug screw 7 by the force of the spring 8, so that the clamp body 3 is in the maximum expansion state when there is no clamping after assembly. During this period, the plug screw 7 is completely set in the countersunk hole 13, and then the two sets of clamp bodies 3 are installed on the mounting mold according to the distribution shown in the figure. At the bottom of block 4, after installation, the active block 32 and the driven block 33 have a vertical height difference of 0.5mm from the surface of the mounting module 4, to ensure that after the center block 31 is installed and fixed, the active block 32 and the driven block 33 can flexibly move left and right to reduce the jamming phenomenon. At the same time, two Picatinny rails 2 are installed on the top of the mounting platform 1. Therefore, when the two sets of clamp bodies 3 at the bottom of the mounting module 4 are placed on the two Picatinny rails 2, the first positioning boss 17 on the center block 31 can be matched between the second positioning bosses on the Picatinny rail 2 to achieve precise positioning.

[0069] In the present utility model, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The term "and / or" used in this article includes any and all combinations of one or more related listed items. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0070] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0071] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0072] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A double Picatinny rail locking fixture for large module disassembly and assembly, characterized in that: It comprises a mounting platform (1), the top of which is fixedly mounted two mutually parallel Picatinny rails (2), two clamp bodies (3) are respectively arranged on the two Picatinny rails (2), and the tops of the four clamp bodies (3) are simultaneously connected to a mounting module (4), and a locking key (5) is respectively arranged on one side of each clamp body (3); The clamp body (3) comprises a central block (31) connected to the mounting module (4), an active block (32) arranged on one side of the central block (31), a driven block (33) arranged on the other side of the central block (31), a locking screw (34) movably passing through the driven block (33) and the central block (31), and a special-shaped boss (35) connected to one end of the locking screw (34), the other end of the locking screw (34) being threadedly connected to the active block (32), and one end of the locking key (5) being adapted to fit the special-shaped boss (35); Two stepped holes (6) are respectively provided on the left and right sides of the central block (31), and each two of the stepped holes (6) correspond to each other and are interconnected, and positioning expansion components are respectively provided in the stepped holes (6) on the left and right sides.

2. A double Picatinny rail locking fixture for large module disassembly and assembly according to claim 1, characterized in that: The surface of the center block (31) is connected to a plurality of first positioning bosses (17) arranged at intervals, and the surface of the Picatinny rail (2) is connected to a plurality of second positioning bosses arranged at intervals, wherein the first positioning boss (17) is arranged between each two adjacent second positioning bosses on the Picatinny rail (2).

3. The double Picatinny rail locking fixture for large module assembly and disassembly according to claim 1, characterized in that: The positioning expansion assembly comprises plug screws (7) respectively connected to the stepped holes (6) on the left and right sides and springs (8) respectively sleeved on the outer walls of the plurality of plug screws (7); the springs (8) are arranged in the stepped holes (6), and the plug screws (7) on the left and right sides respectively penetrate the active block (32) and the driven block (33).

4. A double Picatinny rail locking fixture for large module disassembly and assembly according to claim 1, characterized in that: One end of the locking key (5) is provided with a platform (9), one end of the platform (9) is provided with a special-shaped groove (10), and the inner cavity of the special-shaped groove (10) is adapted to fit the special-shaped boss (35).

5. A double Picatinny rail locking fixture for large module disassembly and assembly according to claim 4, characterized in that: A stepped hole (11) is formed through the surface of the driven block (33), the locking screw (34) is inserted into the stepped hole (11), and the step (9) is adapted to fit inside the stepped hole (11).

6. A double Picatinny rail locking fixture for large module disassembly and assembly according to claim 5, characterized in that: A threaded hole (12) is formed through the surface of the active block (32), and one end of the locking screw (34) is threadedly connected in the threaded hole (12). A through hole (18) is formed through the surface of the center block (31), and the through hole (18) is coaxially arranged with the step hole (11) and the threaded hole (12).

7. A double Picatinny rail locking fixture for large module assembly and disassembly according to claim 3, characterized in that: A countersunk hole (13) is respectively formed on one side of the active block (32) and the driven block (33), the countersunk hole (13) corresponds to the stepped hole (6), and the plug screw (7) is connected to the stepped hole (6) through the countersunk hole (13).

8. The double Picatinny rail locking fixture for large module assembly and disassembly according to claim 7, characterized in that: The other side surfaces of the active block (32) and the driven block (33) are respectively provided with positioning grooves (14) communicating with the countersunk hole (13); one end of the spring (8) away from the stepped hole (6) is arranged in the positioning groove (14).

9. The double Picatinny rail locking fixture for large module disassembly and assembly according to claim 1, characterized in that: The upper and lower ends of the central block (31) are provided with mounting holes (15), and fixing screws (16) are arranged in the mounting holes (15). The central block (31) is fixedly connected to the mounting module (4) via the fixing screws (16).