Multipurpose track clamp

Abstract

The invention relates to the technical field of clamps, and provides a multipurpose track clamp which comprises a connecting part, a fixed part installed on the connecting part, a movable part, a fixed assembly and an inflation assembly, the fixed part and the movable part are clamped to the two sides, provided with a groove, of a shielding layer, and the fixed assembly is used for fixing the movable part and the connecting part; the inflation assembly comprises a sliding plate, two first air bags and two second air bags, the two first air bags are installed on the sides, close to each other, of the fixed part and the movable part correspondingly, the two second air bags are installed on the connecting part, and the two first air bags communicate with the two second air bags correspondingly; the sliding plate is used for extruding the second air bag. According to the multipurpose track clamp, the stability of the clamp installed at the flower junction position of a shielding layer is improved; and the clamp can be connected with external hoisting equipment and can be used for packaging, placing and the like of the shielding layer, so that the clamp has multiple purposes.

Description

Technical Field

[0001] The present application relates to the technical field of clamps, and in particular to a multi-purpose track clamp. Background Art

[0002] As an important protective structure for the inner wall of a ship, the marine membrane enclosure system is crucial to ensuring the thermal insulation and pressure resistance of storage tanks. These tanks are usually used to transport critical substances such as liquefied natural gas, so their sealing and connection performance must meet extremely high standards.

[0003] In the process of building a marine membrane system, the construction and welding of the shielding layer are particularly critical. However, the traditional welding method mainly relies on manual operation, which undoubtedly increases the complexity of operation and the risk of error when facing large storage tanks and numerous welding positions. Due to the large number of welding positions and their wide distribution, manual welding is prone to problems such as poor sealing and unstable connection, which affects the safety and reliability of the entire system.

[0004] In order to solve this problem, people began to use clamps to assist the shielding layer welding process. The clamp is installed at the shielding layer's knot position. By connecting the clamps of two adjacent shielding layers, the stability of welding can be significantly increased. However, the existing clamp design still has some shortcomings. Figure 1 As shown, the shielding layer 6 has grooves 61 on opposite sides of the flower knot position, and the clamp of the clamp is usually clamped on the side of the shielding layer 6 with the groove 61 at the flower knot position. However, the fit between the clamp and the groove 61 at the flower knot position directly affects the stability of the clamp installed on the shielding layer 6. If the fit is not good, the clamp may become loose or fall off, thereby affecting the welding quality of the shielding layer and the stability of the overall structure. Therefore, a clamp is needed to increase the stability of clamping on the shielding layer. Summary of the invention

[0005] In order to increase the stability of the clamp installed at the shielding layer knot position, the present application provides a multi-purpose track clamp.

[0006] The multi-purpose track clamp provided in this application adopts the following technical solution: A multi-purpose track clamp comprises a connecting part, a fixed part installed on the connecting part, a movable part, a fixing assembly and an inflatable assembly, wherein the fixed part and the movable part are clamped on both sides of a shielding layer having a groove, and the fixing assembly is used to fix the movable part to the connecting part; the inflatable assembly comprises a sliding plate, two groups of first airbags and two groups of second airbags, the two groups of first airbags are respectively installed on the side where the fixed part and the movable part are close to each other, the two groups of second airbags are both installed on the connecting part, and the two groups of first airbags are respectively connected to the two groups of second airbags; the sliding plate is used to squeeze the second airbags.

[0007] By adopting the above technical solution, the fixed part and the movable part clamp the position of the shielding layer with the groove from both sides respectively, and the fixed component is used to achieve stable fixation of the movable part and the connecting part. When the sliding plate in the inflation component squeezes the second airbag, the gas flows into the first airbag to expand it, so that the first airbag is closely attached to the inner wall of the groove of the shielding layer.

[0008] Continuing to inflate the first airbag further can better fit the irregular surface in the groove, eliminate tiny gaps, and improve the contact area and clamping accuracy. This design not only enhances the stability between the fixture and the shielding layer, but also effectively avoids the problem of loosening or falling off due to loose clamping, thereby improving the quality of shielding layer welding and the stability of the overall structure.

[0009] Optionally, the fixing assembly includes a sliding rod, a fixed rod, a positioning half ring and a torsion spring, the fixed rod is installed on the connecting part, and the sliding rod is installed on the movable part; the positioning half ring is hinged to the sliding rod and is used to sleeve the outer wall of the fixed rod, the positioning half ring is installed with a positioning block, and the outer wall of the fixed rod is provided with a plurality of positioning grooves for the positioning blocks to be inserted; the torsion spring is installed between the positioning half ring and the sliding rod, and the elastic force of the torsion spring is used to drive the positioning block to be inserted into the positioning groove under normal conditions.

[0010] By adopting the above technical solution, the positioning block can be selectively inserted into different positioning grooves according to needs, so as to achieve precise adjustment of the relative position between the active part and the connecting part. This flexible position adjustment function makes the clamp more convenient and reliable when adapting to shielding layer grooves of different sizes or shapes, effectively improving the application range and installation accuracy of the clamp. At the same time, under the action of the torsion spring force, the positioning block is firmly inserted into the selected positioning groove under normal conditions, ensuring a stable connection between the active part and the connecting part, and further enhancing the overall working reliability of the clamp.

[0011] Optionally, the fixing assembly further includes a positioning member and a disassembly member, and one end of the sliding rod is fixed to the sliding plate; the sliding rod is detachably connected to the movable part via the disassembly member, and the positioning member is used to fix the movable part to the connecting part.

[0012] By adopting the above technical solution, the detachable connection between the sliding rod and the movable part through the detachable part realizes flexible control of the airbag inflation process. Specifically, in the initial stage, when the sliding rod is connected to the movable part, pushing the sliding rod can synchronously drive the movable part and the sliding plate to move, thereby effectively squeezing the second airbag to complete the initial inflation.

[0013] When the fixed part and the movable part successfully clamp the two sides of the shielding layer knot position, the connection between the sliding rod and the movable part is released, and the movable part is firmly fixed to the connecting part by using the positioning piece. At this time, further sliding the sliding rod will not only not affect the position stability of the movable part, but also act on the sliding plate alone to continuously compress the second airbag, and then provide more gas to the first airbag, ensuring that the airbag is fully expanded and tightly fits the shielding layer, greatly improving the stability and reliability of the fixture fixation.

[0014] Optionally, the disassembly part includes a fixed block, a first spring and an unlocking part, the movable part is provided with a movable groove, the fixed block is movably installed in the movable groove, and the sliding rod is provided with a fixed groove for the fixed block to be inserted; the two ends of the first spring are respectively connected to the fixed block and the movable groove, the elastic force of the first spring is used to drive the fixed block to be inserted into the fixed groove under normal conditions, and the unlocking part is used to push the fixed block back into the movable groove.

[0015] By adopting the above-mentioned technical solution, the plug-in cooperation between the fixed block and the fixed groove realizes the effective fixation of the sliding rod and the movable part, ensuring that the two maintain a stable connection under the working state, and can clamp the positions of flower knots of different sizes in the shielding layer; and when it is necessary to cancel the fixation of the sliding rod and the movable part, the unlocking part can be used to push the fixed block back into the movable groove.

[0016] When it is necessary to cancel the clamping of the fixed part and the movable part on the knot position of the shielding layer, the sliding rod is moved toward the side away from the fixed part. When the fixed groove is exactly opposite to the movable groove, the fixed block will be quickly reset to the fixed groove under the action of the first spring to complete a new round of fixing action. At the same time, it is also convenient to synchronously control the movement position adjustment of the movable part and the sliding plate.

[0017] Optionally, the positioning member includes a plug-in block and a guide surface, the side wall of the movable part is provided with a first plug-in slot connected to the movable groove, the plug-in block is slidably installed in the first plug-in slot, and the connecting part is provided with a plurality of second plug-in slots; the guide surface is arranged on the plug-in block, and when the fixed block is pushed back into the movable slot, the fixed block abuts against the guide surface, and the guide surface is used to guide the plug-in block to be plugged into the second plug-in slot.

[0018] By adopting the above technical solution, when it is necessary to release the fixing of the sliding rod and the movable part, the unlocking part can be used to make the fixing block withdraw from the fixing groove. In this process, the fixing block can also cleverly guide the plug-in block to be inserted into the second plug-in groove on the connecting part, thereby achieving instant fixing of the movable part and the connecting part. Further, after the fixing block is withdrawn into the movable groove, with the elastic force provided by the first spring, the fixing block always maintains a state of close contact with the outer wall of the sliding rod, so that even in this case, the plug-in block can still be firmly located in the second plug-in groove, avoiding free sliding of the movable part, and increasing the stability of the clamping on the opposite sides of the knot position.

[0019] Optionally, one end of the plug-in block close to the second plug-in slot is arranged to be tilted upward, and a smooth layer is provided on the inner wall of the plug-in block and the first plug-in slot.

[0020] By adopting the above technical solution, one end of the plug-in block is set to an upwardly inclined shape, so that when the fixed block is reinserted into the fixed slot under the action of the spring, the abutment relationship between the fixed block and the plug-in block can be effectively released. At the same time, since the plug-in block and the inner wall of the first plug-in slot are provided with a smooth layer, the friction resistance is reduced, so that the plug-in block can slide smoothly under its own gravity, thereby breaking away from the connection state with the second plug-in slot, and realizing a convenient unlocking function.

[0021] Optionally, the unlocking part includes a push rod, a pull rod and a connecting column, the sliding rod is provided with a pull groove and a connecting groove, and the two ends of the connecting groove are respectively connected with the fixed groove and the pull groove; the pull rod is slidably installed in the pull groove, the push rod is slidably installed in the fixed groove and is used to abut against the fixed block, and the two ends of the connecting column are respectively connected with the push rod and the pull rod.

[0022] By adopting the above technical solution, the design of the unlocking part can realize the quick unlocking operation of the fixed block. Specifically, when the pull rod is pulled, the connecting column drives the push rod to move, and the push rod pushes the fixed block out of the fixed groove, so that the sliding rod is disconnected from the movable part, which facilitates the adjustment of the position of the movable part. This structure improves the convenience of the clamp operation, reduces the assembly time, and ensures the flexibility and stability of the clamp during use.

[0023] Optionally, a rubber layer is provided on the inner wall of the positioning semi-ring.

[0024] By adopting the above technical solution, the rubber layer provided on the inner wall of the positioning half ring can enhance the friction between the positioning half ring and the fixing rod, improve the tightness of the connection between the two, prevent the positioning half ring from loosening due to vibration or external force, and thus improve the overall stability of the clamp. This solution further ensures the reliability and safety of the clamp during use.

[0025] Optionally, a second spring is provided in the second airbag, and the elastic force of the second spring is used to drive the second airbag to maintain an expanded state.

[0026] By adopting the above technical solution, the second spring can effectively ensure that the second airbag quickly returns to the expanded state when not squeezed by the outside. When the sliding plate no longer applies pressure to the second airbag, the second airbag can automatically return to the initial expanded state by relying on the elastic force of the second spring, thereby ensuring that the clamp can always maintain good fitting performance and stability during multiple uses, while facilitating users to quickly adjust and reuse the clamp, thereby improving work efficiency.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up the inflation component, when the sliding plate squeezes the second airbag, the gas flows into the first airbag to expand it, so that the first airbag closely fits the inner wall of the shielding layer groove; continuing to inflate the first airbag further expands it, which can better fit the irregular surface in the groove, eliminate small gaps, and improve the contact area and clamping accuracy; enhance the stability between the clamp and the shielding layer, and effectively avoid the problem of loosening or falling off caused by loose clamping, thereby improving the welding quality of the shielding layer and the stability of the overall structure; 2. By setting up the disassembly part and the positioning part, when the fixed part and the movable part successfully clamp the two sides of the shielding layer knot position, the disassembly part is used to release the connection between the sliding rod and the movable part, and the positioning part is used to firmly fix the movable part on the connecting part; at this time, further sliding the sliding rod will not only not affect the position stability of the movable part, but also can act on the sliding plate alone to continuously compress the second airbag, and then provide more gas to the first airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the background technology; Figure 2 is a partial cross-sectional view of this embodiment; Figure 3 Schematic diagram of the installation of the positioning half ring and the fixing rod of this embodiment; Figure 4 is a partial cross-sectional view of the fixing assembly of this embodiment; Figure 5 is a schematic diagram of the installation of the unlocking part of this embodiment; Figure 6 yes Figure 4 A local enlarged view of point a.

[0029] Explanation of reference numerals: 1, connecting portion; 11, connecting plate; 12, mounting housing; 13, movable chamber; 14, sliding groove; 15, second plug-in groove; 2, fixing portion; 3, movable portion; 31, through hole; 32, movable groove; 33, first plug-in groove; 34, extension groove; 4, inflatable component; 41, sliding plate; 42, first airbag; 43, second airbag; 44, second spring; 5, fixing component; 51, sliding rod; 511, fixing slot; 512, pull slot; 513, connecting slot; 52, fixing rod; 521, positioning slot; 53, positioning half ring; 531, positioning block; 54, positioning piece; 541, plug-in block; 542, guide surface; 55, disassembly piece; 551, fixing block; 552, first spring; 554, unlocking part; 555, push rod; 556, pull rod; 557, connecting column; 558, pull ring; 559, extension part; 6, shielding layer; 61, groove. DETAILED DESCRIPTION

[0030] The following is combined with Figure 2-Figure 6 This application is described in further detail.

[0031] The embodiment of the present application discloses a multi-purpose track clamp.

[0032] Reference Figure 2 A multi-purpose track clamp comprises a connecting part 1, a fixing part 2, a movable part 3, a fixing assembly 5 and an inflatable assembly 4, wherein the connecting part 1 comprises a connecting plate 11 and a mounting shell 12 connected to the connecting plate 11, wherein the connecting plate 11 is used to be connected to the connecting plate 11 of an adjacent clamp; the mounting shell 12 is provided with an active chamber 13, and the fixing part 2 is fixed to a side of the mounting shell 12 away from the connecting plate 11; in this embodiment, a sliding groove 14 connected to the active chamber 13 is provided at the bottom of the mounting shell 12, one end of the movable plate is penetrated through the sliding groove 14 and is slidingly connected to the active chamber 13, and the fixing assembly 5 is used to fix the movable part 3 and the mounting shell 12.

[0033] The inflation assembly 4 includes a sliding plate 41, two groups of first airbags 42 and two groups of second airbags 43. The two groups of first airbags 42 are respectively adhered to the side of the fixed part 2 and the movable part 3 that are close to each other; the two groups of second airbags 43 are both arranged in the movable chamber 13, and the two groups of second airbags 43 are respectively connected with the two groups of first airbags 42 through elastic tubes; the sliding plate 41 is slidably installed in the movable chamber 13 to abut against the two second airbags 43 so as to fill the gas in the second airbags 43 into the first airbags 42.

[0034] A second spring 44 is provided in the second airbag 43 , and the elastic force of the second spring 44 is used to drive the second airbag 43 to return to the expanded state; that is, when the sliding plate 41 is no longer in contact with the second airbag 43 , the second airbag 43 returns to its original state under the elastic force of the second spring 44 .

[0035] Also refer to Figure 3 and Figure 4 In this embodiment, the fixing assembly 5 includes a sliding rod 51, a fixing rod 52, a positioning half ring 53, a positioning member 54 and a disassembly member 55. The fixing rod 52 is fixed to the mounting shell 12, and the extension direction of the fixing rod 52 is in the same direction as the sliding direction of the movable plate; a plurality of positioning grooves 521 are provided on the outer wall of the fixing rod 52, and all the positioning grooves 521 are arranged at intervals along the extension direction of the fixing rod 52.

[0036] Reference Figure 4 One end of the sliding rod 51 is fixed to the sliding plate 41, and the movable part 3 is provided with a penetration hole 31, and the sliding rod 51 is penetrated by the penetration hole 31 and exposed to the outside; the disassembly member 55 is used to fix the sliding rod 51 to the inner wall of the penetration hole 31, and when the disassembly member 55 cancels the fixation between the sliding rod 51 and the movable part 3, the positioning member 54 is used to fix the movable part 3 to the inner wall of the sliding groove 14.

[0037] Reference Figure 3 The positioning half ring 53 is rotatably installed on the end of the sliding rod 51 away from the sliding plate 41, and a positioning block 531 is provided on the inner wall of the positioning half ring 53, and the outer diameter of the positioning block 531 is adapted to the inner diameter of the positioning groove 521; when it is necessary to fix the sliding rod 51 and the connecting part 1, the positioning half ring 53 is rotated so that the positioning half ring 53 is sleeved on the outer wall of the fixing rod 52, and the positioning block 531 is inserted into the positioning groove 521.

[0038] The torsion spring is installed between the positioning half ring 53 and the sliding rod 51. The elastic force of the torsion spring is used to drive the positioning block 531 to be inserted into the selected positioning groove 521 under normal conditions, further increasing the stability of the connection between the sliding rod 51 and the mounting housing 12. In this embodiment, a rubber layer is provided in the positioning half ring 53, and the rubber layer is provided to facilitate the positioning half ring 53 to be sleeved on the outer wall of the fixing rod 52.

[0039] Reference Figure 4 The disassembly member 55 includes a fixed block 551, a first spring 552 and an unlocking portion 554. A movable groove 32 is provided on the inner wall of the penetration hole 31. The fixed block 551 is movably installed in the movable groove 32. A fixed groove 511 is provided on the bottom wall of the sliding rod 51 for the fixed block 551 to be inserted. The two ends of the first spring 552 are respectively fixed to the fixed block 551 and the inner wall of the movable groove 32. The elastic force of the first spring 552 forces the fixed block 551 to move toward the side away from the movable groove 32.

[0040] Reference Figure 5The unlocking portion 554 includes a push rod 555, a pull rod 556 and a connecting column 557. The push rod 555 is slidably installed in the fixed groove 511, and when the fixed block 551 is inserted into the fixed groove 511, the push rod 555 abuts against the fixed block 551 and moves toward one side of the fixed groove 511; the sliding rod 51 is provided with a pull groove 512 and a connecting groove 513, the pull groove 512 is arranged at the bottom of the sliding rod 51, and the pull rod 556 is slidably installed in the pull groove 512. In this embodiment, a pull ring 558 is arranged at one end of the pull rod 556 away from the pull groove 512; the connecting column 557 is slidably installed in the connecting groove 513, and the two ends of the connecting column 557 are respectively connected to the pull rod 556 and the push rod 555.

[0041] When the pull rod 556 is pulled, the connecting column 557 drives the push rod 555 to move, and the push rod 555 pushes the fixing block 551 out of the fixing groove 511, so that the sliding rod 51 is disconnected from the movable part 3, and the position of the movable part 3 is adjusted conveniently. This structure improves the convenience of the clamp operation, reduces the assembly time, and ensures the flexibility and stability of the clamp during use.

[0042] Reference Figure 6 In this embodiment, the positioning member 54 includes a plug-in block 541 and a guide surface 542. The side wall of the movable part 3 is provided with a first plug-in slot 33 connected to the movable slot 32, and the end of the first plug-in slot 33 away from the movable slot 32 is inclined upward; the plug-in block 541 is slidably installed in the first plug-in slot 33, and the inner wall of the sliding slot 14 is provided with a plurality of second plug-in slots 15 for the plug-in block 541 to be plugged in; in this embodiment, the plug-in block 541 and the inner wall of the first plug-in slot 33 are both provided with a smooth layer; the provision of the smooth layer can reduce the friction between the plug-in block 541 and the first plug-in slot 33, so that the plug-in block 541 slides toward one side of the movable slot 32 under the action of its own gravity.

[0043] The guide surface 542 is arranged on a side of the plug-in block 541 close to the movable groove 32, and the side of the plug-in block 541 away from the movable groove 32 is defined as a reference plane. The distance between the guide surface 542 and the reference plane gradually increases from the side away from the movable groove 32 to the side close to the movable groove 32; the guide surface 542 is used to guide the plug-in block 541 to move to the side away from the movable groove 32.

[0044] In this embodiment, an extension groove 34 connected to the first plug-in groove 33 is formed on the inner wall of the movable groove 32 , and an extension portion 559 is integrally formed on the outer wall of the fixed block 551 . The extension portion 559 is located in the extension groove 34 and is used to abut against the guide surface 542 of the plug-in block 541 .

[0045] When the fixing of the sliding rod 51 and the movable part 3 needs to be released, the unlocking part 554 can be used to make the fixing block 551 withdraw from the fixing groove 511. During this process, the extension part 559 abuts against the guide surface 542, so that the plug-in block 541 is plugged into the second plug-in groove 15 under the guidance of the guide surface 542, thereby achieving the fixing of the movable part 3 and the connecting part 1. After the fixing block 551 is withdrawn into the movable groove 32, with the elastic force provided by the first spring 552, the fixing block 551 always maintains a state of close contact with the outer wall of the sliding rod 51, so that even in this case, the plug-in block 541 can still be firmly located in the second plug-in groove 15, avoiding the free sliding of the movable part 3, and increasing the stability of the clamping on the opposite sides of the knot position.

[0046] The implementation principle of a multi-purpose track clamp in the embodiment of the present application is: The fixed part 2 and the movable part 3 respectively clamp the position of the shielding layer 6 with the groove 61 from both sides, and utilize the plug-in cooperation of the fixing block 551 and the different fixing grooves 511 to fix the movable part 3 and the connecting part 1; at this time, further sliding the sliding rod 51 will not only not affect the position stability of the movable part 3, but also can act on the sliding plate 41 alone to continuously compress the second airbag 43, and then provide more gas to the first airbag 42; so that the first airbag 42 can better fit the irregular surface in the groove 61, eliminate small gaps, and improve the contact area and clamping accuracy.

[0047] This design not only enhances the stability between the clamp and the shielding layer 6, but also effectively avoids the problem of loosening or falling off due to loose clamping, thereby improving the welding quality of the shielding layer 6 and the stability of the overall structure.

[0048] In addition, connecting two adjacent clamps can not only increase the stability of the two adjacent shielding layers 6 during the welding process; and a track can be set between the two adjacent clamps so that a robotic arm can be set up for welding work; and after the welding is completed, the clamp can be connected to an external lifting equipment to facilitate the subsequent work such as packaging and placing the shielding layer 6, so that the clamp has multiple uses and improves the practicality of the clamp.

[0049] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-purpose track clamp, characterized in that: The invention comprises a connecting portion (1), a fixed portion (2) mounted on the connecting portion (1), a movable portion (3), a fixing assembly (5) and an inflatable assembly (4), wherein the fixed portion (2) and the movable portion (3) are clamped on two sides of a shielding layer (6) having a groove (61), and the fixing assembly (5) is used to fix the movable portion (3) to the connecting portion (1); the inflatable assembly (4) comprises a sliding plate (41), two groups of first airbags (42) and two groups of second airbags (43), the two groups of first airbags (42) are respectively mounted on one side of the fixed portion (2) and the movable portion (3) close to each other, the two groups of second airbags (43) are both mounted on the connecting portion (1), and the two groups of first airbags (42) are respectively connected to the two groups of second airbags (43); and the sliding plate (41) is used to squeeze the second airbags (43).

2. The multi-purpose track clamp according to claim 1, characterized in that: The fixing assembly (5) comprises a sliding rod (51), a fixing rod (52), a positioning half ring (53) and a torsion spring, wherein the fixing rod (52) is mounted on the connecting portion (1), and the sliding rod (51) is mounted on the movable portion (3); the positioning half ring (53) is hinged to the sliding rod (51) and is used to be sleeved on the outer wall of the fixing rod (52); the positioning half ring (53) is mounted with a positioning block (531), and the outer wall of the fixing rod (52) is provided with a plurality of positioning grooves (521) for the positioning blocks (531) to be inserted into; the torsion spring is mounted between the positioning half ring (53) and the sliding rod (51), and the elastic force of the torsion spring is used to drive the positioning blocks (531) to be inserted into the positioning grooves (521) in a normal state.

3. The multi-purpose track clamp according to claim 2, characterized in that: The fixing assembly (5) further comprises a positioning member (54) and a disassembly member (55); one end of the sliding rod (51) is fixed to the sliding plate (41); the sliding rod (51) is detachably connected to the movable part (3) via the disassembly member (55); and the positioning member (54) is used to fix the movable part (3) to the connecting part (1).

4. The multi-purpose track clamp according to claim 3, characterized in that: The disassembly component (55) comprises a fixed block (551), a first spring (552) and an unlocking portion (554); the movable portion (3) is provided with a movable groove (32); the fixed block (551) is movably installed in the movable groove (32); the sliding rod (51) is provided with a fixed groove (511) for the fixed block (551) to be inserted into; two ends of the first spring (552) are respectively connected to the fixed block (551) and the movable groove (32); the elastic force of the first spring (552) is used to drive the fixed block (551) to be inserted into the fixed groove (511) in a normal state; and the unlocking portion (554) is used to push the fixed block (551) back into the movable groove (32).

5. The multi-purpose rail clamp according to claim 4, characterized in that: The positioning member (54) comprises a plug-in block (541) and a guide surface (542); a first plug-in slot (33) connected to the movable slot (32) is provided on a side wall of the movable portion (3); the plug-in block (541) is slidably installed in the first plug-in slot (33); and the connecting portion (1) is provided with a plurality of second plug-in slots (15); the guide surface (542) is provided on the plug-in block (541); when the fixed block (551) is pushed back into the movable slot (32), the fixed block (551) abuts against the guide surface (542); and the guide surface (542) is used to guide the plug-in block (541) to be plugged into the second plug-in slot (15).

6. The multi-purpose rail clamp according to claim 5, characterized in that: One end of the plug-in block (541) close to the second plug-in slot (15) is arranged to be tilted upwards, and the inner wall of the plug-in block (541) and the first plug-in slot (33) are both provided with a smooth layer.

7. The multi-purpose rail clamp according to claim 4, characterized in that: The unlocking portion (554) comprises a push rod (555), a pull rod (556) and a connecting column (557); the sliding rod (51) is provided with a pull groove (512) and a connecting groove (513); the two ends of the connecting groove (513) are respectively connected to the fixed groove (511) and the pull groove (512); the pull rod (556) is slidably mounted on the pull groove (512); the push rod (555) is slidably mounted on the fixed groove (511) and is used to abut against the fixed block (551); and the two ends of the connecting column (557) are respectively connected to the push rod (555) and the pull rod (556).

8. The multi-purpose rail clamp according to claim 2, characterized in that: The inner wall of the positioning half ring (53) is provided with a rubber layer.

9. The multi-purpose rail clamp according to claim 1, characterized in that: A second spring (44) is arranged inside the second airbag (43), and the elastic force of the second spring (44) is used to drive the second airbag (43) to maintain an expanded state.

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