Tensioning device and arrow ground connector

Abstract

The application provides a pulling device and a rocket-earth connector, which comprises a support frame fixedly connected to a launching platform, a sliding block bearing a ground part of the rocket-earth connector and movably arranged on the fixed part, a stop plate limiting the forward and backward movement of the sliding block and arranged on the support frame, a pulling component connected between the rear end of the sliding block and the support frame, and a trigger assembly arranged between the upper part of the rocket-earth connector and the stop plate. When the upper part of the rocket-earth connector is separated from the ground part due to the launching of the rocket, the trigger assembly triggers the stop plate to move upward to a position where the stop plate no longer blocks the sliding block, so that the sliding block moves backward under the pulling of the pulling component. After the application is adopted, at the moment when the rocket is ignited, the rocket body with the upper part of the rocket-earth connector is lifted, the sliding block can hold the ground part of the connector and is instantaneously withdrawn to a predetermined distance to avoid the rocket body, so that the attitude of the rocket body is effectively avoided and the structure of the rocket body is not damaged.

Description

Technical Field

[0001] This invention relates to the field of launch vehicle equipment technology, and in particular to a traction device and a rocket-to-ground connector. Background Technology

[0002] The rocket-to-ground connector consists of an upper section and a ground section. During operation, the ground section and the upper section connect via corresponding channels (each channel carries high-pressure gas, cryogenic liquid, etc.). The upper section is mounted on a support frame on the rocket body and ascends with the rocket. The ground section is mounted on a support frame fixed to the ground. This support frame must be able to withstand the separation thrust between the ground and upper sections during operation, ensuring a sealed connection. At the "zero second" of rocket ignition, the rocket body, carrying the upper section, ascends and separates from the ground section, while the support frame holds the ground section in place.

[0003] In developing this invention, the inventors discovered the following problems with the existing technology: Traditional support frames only hold the ground portion of the rocket-to-ground connector in place, but lack a retraction function that allows the rocket to move away from the rocket. Since rockets exhibit takeoff drift, there is a possibility that the rocket body could collide with the ground portion of the rocket-to-ground connector, causing serious damage to the rocket body or nozzle and leading to launch mission failure. Therefore, how to prevent the rocket body from colliding with the ground portion of the rocket-to-ground connector during launch is a problem that needs to be solved. Summary of the Invention

[0004] This invention provides a pulling device and a rocket-to-ground connector to prevent the rocket body from colliding with the ground part of the rocket-to-ground connector during rocket launch, thereby ensuring launch safety.

[0005] To achieve the above objectives, in one aspect, embodiments of the present invention provide a pulling device, comprising: a support frame fixedly connected to a fixing member; a slider carrying the ground portion of the rocket-to-ground connector, movable back and forth on the support frame; a stop plate limiting the back and forth movement of the slider, disposed on the support frame; a pulling component connected between the rear end of the slider and the support frame; and a triggering component disposed between the upper part of the rocket-to-ground connector and the stop plate; when the upper part of the rocket-to-ground connector separates from the ground portion of the rocket-to-ground connector due to rocket launch, the triggering component triggers the stop plate to move upward to a position where it no longer obstructs the slider, so that the slider moves backward under the pull of the pulling component.

[0006] In one possible design, the trigger assembly includes a trigger seat fixedly connected to the ground portion of the arrow-to-ground connector, a trigger plate for abutting against the upper portion of the arrow-to-ground connector, the trigger plate being hinged to the trigger seat, and a trigger torsion spring being provided between the trigger plate and the trigger seat; the trigger seat is connected to the upper end of a stop plate via a cable. When the ground portion of the arrow-to-ground connector is engaged with the upper portion of the arrow-to-ground connector, the upper portion of the arrow-to-ground connector abuts against the trigger plate; when the ground portion of the arrow-to-ground connector separates from the upper portion of the arrow-to-ground connector, the upper portion of the arrow-to-ground connector separates from the trigger plate, and the trigger plate rotates from back to front under the elastic force of the trigger torsion spring.

[0007] In one possible design, the support frame is also equipped with guide columns, and a cable guide wheel is installed at the top of the guide column, with the cable wound around the cable guide wheel.

[0008] In one possible design, the support frame is also equipped with a guide rail, and the slider is slidably connected to the guide rail; the rear end of the support frame is also connected to a traction component fixing rod, and the rear end of the traction component is connected to the traction component fixing rod.

[0009] In one possible design, the stop plate is a portal structure consisting of a top crossbeam and two columns fixedly connected; the support frame is also equipped with stop plate guide seats, which are located on both sides of the stop plate, and the stop plate guide seats are equipped with side guide wheels that contact the columns.

[0010] In one possible design, the side guide wheels are divided into multiple groups along the height direction, each group including two side guide wheels; the column is clamped between the two side guide wheels in the same group.

[0011] In one possible design, the rear end face of the slider is also provided with an end face guide wheel for guiding the top crossbeam.

[0012] In one possible design, the traction device also includes an anti-fall-back component to prevent the stop plate from falling back after it has moved upward to the top.

[0013] In one possible design, the anti-fall-back component includes a stop block initially positioned against a stop plate; when the stop plate moves upward causing the stop block to swing backward to its extreme position, the stop block restricts the stop plate from moving downward.

[0014] In one possible design, the support frame is also provided with a stop block mounting seat, and the stop block is hinged to the stop block mounting seat; a stop torsion spring is also provided between the stop block mounting seat and the stop block to push the stop block to rotate from front to back.

[0015] On the other hand, embodiments of the present invention also provide an arrow-to-ground connector, including an arrow portion of the arrow-to-ground connector, a ground portion of the arrow-to-ground connector, and the aforementioned pulling device, wherein the ground portion of the arrow-to-ground connector is connected to a slider.

[0016] The above technical solution has the following beneficial effects:

[0017] In this technical solution, the ground portion of the rocket-to-ground connector is no longer directly mounted on the support frame. Instead, a pulling device for the rocket-to-ground connector is installed on the support frame, and the ground portion of the connector is placed on the slider of the pulling device. When the rocket launch causes the rocket body to separate from the ground portion of the connector, a stop plate can be triggered to move upward, thereby releasing the stop plate's obstruction of the slider. Subsequently, the slider is pulled back quickly by the pulling component (300-800mm, set according to actual needs), thus avoiding rocket body drift and preventing the rocket body from touching the ground portion of the connector. This effectively avoids damage to the rocket body structure, ensures launch safety, and also avoids affecting the rocket's attitude. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a partial schematic diagram of the structure of a traction device according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the overall structure of a traction device according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram showing the connection between the slider and the pulling component in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the connection between the stop plate and the cable in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the triggering component in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the anti-fallback component in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram illustrating the process of triggering components during rocket launch;

[0026] Figure 8This is a schematic diagram of the operation process of the anti-fall-back components during rocket launch.

[0027] Icon labels:

[0028] 1. Slider; 2. Guide rail mounting plate; 3. Stop plate guide seat; 4. Guide rail; 5. Support frame; 6. Pulling component fixing rod; 7. Pulling component; 8. Stop plate; 9. Stop block; 10. Cable guide wheel; 11. Cable; 12. Trigger plate; 13. Launching platform; 14. End face guide wheel; 15. Guide column; 16. Gantry; 17. Side guide wheel; 18. Trigger torsion spring; 19. Trigger seat; 20. Trigger pin; 21. Stop torsion spring; 22. Stop block mounting seat; 31. Arrow-ground connector upper part; 32. Arrow-ground connector ground part; 81. Column; 82. Crossbeam. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figure 1 , Figure 2 As shown, to solve the aforementioned problems, this embodiment of the invention provides a traction device, comprising:

[0031] The support frame 5 is fixedly connected to a fixing component (e.g., launch pad 13);

[0032] The slider 1, which supports the ground portion 32 of the arrow-ground connector, is mounted on the support frame 5 and can move back and forth.

[0033] The stop plate 8, which limits the forward and backward movement of the slider 1, is set on the support frame 5;

[0034] The pulling component 7 (e.g., a spring) is connected between the rear end of the slider 1 and the support frame 5;

[0035] A triggering component is disposed between the arrow portion 31 of the arrow ground connector and the stop plate 8;

[0036] When the arrow part 31 of the arrow-ground connector separates from the ground part 32 of the arrow-ground connector due to rocket launch, the triggering component triggers the stop plate 8 to move upward to a position where it no longer blocks the slider 1, so that the slider 1 moves backward under the pull of the pulling component 7.

[0037] In this technical solution, a slider 1 is used to support the ground portion 32 of the rocket-to-ground connector. Before the fueling operation, the slider 1 is moved forward into position, and then a stop plate 8 is lowered to limit the slider 1, preventing it from retracting. Afterward, the rocket portion 31 of the rocket-to-ground connector is connected, allowing for the corresponding operations. During the forward movement of the slider 1, elastic potential energy is stored due to the pulling component 7. At the "0" second of rocket liftoff, the stop plate 8 is lifted due to the ascent of the rocket portion 31, and the pulling component 7 pulls the slider 1 back quickly by 300-800mm, thus avoiding rocket drift and effectively preventing the rocket body from touching the ground portion 32 of the rocket-to-ground connector, ensuring launch safety.

[0038] Among them, such as Figure 3 As shown, the slider 1 can be made of stainless steel plates welded together to form a box-shaped structure, thus ensuring that the whole can withstand large impact loads. An elongated hole is provided at its front end for mounting the ground part 32 of the arrow-to-ground connector. The ground part 32 can be adjusted forward and backward through the elongated hole during installation. To adjust the mounting height of the ground part 32, a stainless steel adjusting shim can be placed between the ground part 32 and the slider 1.

[0039] Furthermore, the specific structure of the triggering component is as follows: Figure 5 , Figure 1 As shown, the component includes a trigger seat 19 connected to the side wall of the ground portion 32 of the arrow-ground connector (which can be bolted), a trigger plate 12 hinged to the trigger seat 19 via a trigger pin 20, a trigger torsion spring 18 between the trigger plate 12 and the trigger seat 19, and two torsion arms of the trigger torsion spring 18 abutting against the trigger plate 12 and the trigger seat 19 respectively; the rear end of the trigger seat 19 is provided with a hook or opening for connecting one end of a cable 11 (e.g., a steel cable), and the other end of the cable 11 is connected to the upper end of the stop plate 8.

[0040] When the ground portion 32 of the arrow-ground connector is engaged with the upper portion 31 of the arrow-ground connector, the top of the trigger plate 12 rests on the side wall of the upper portion 31 of the arrow-ground connector, and the trigger torsion spring 18 has stored elastic potential energy. When the ground portion 32 of the arrow-ground connector separates from the upper portion 31 of the arrow-ground connector and the upper portion 31 of the arrow-ground connector rises to a certain height, the trigger plate 12 can no longer rest on the upper portion 31 of the arrow-ground connector. At this time, the upper portion 31 of the arrow-ground connector separates from the trigger plate 12, and the trigger plate 12 rotates rapidly from back to front under the action of the elastic potential energy of the trigger torsion spring 18, pulling the stop plate 8 upward rapidly. When the stop plate 8 rises to the predetermined position and no longer blocks the slider 1, the slider 1 is pulled back rapidly by the pulling component 7 (the movement distance is greater than the arrow body drift), thereby causing the ground portion 32 of the arrow-ground connector to simultaneously and rapidly retract to a safe area. This process can be referred to as Figure 7This triggering method relies on the elastic force of the torsion spring 18, resulting in a quick and reliable action.

[0041] Furthermore, such as Figure 1 , Figure 4 As shown, a gantry 16 is also provided above the support frame 5. The gantry 16 is a gantry structure mounted above the slider 1. The gantry 16 is bolted to the support frame 5 (or can be mounted on the guide rail mounting plate 2 located on the top of the support frame 5, as described later). The gantry 16 is the mounting base for the stop plate guide seat 3 and the anti-fall-back component, as described later.

[0042] The gantry 16 is also equipped with a guide post 15, and a cable guide wheel 10 is installed at the top of the guide post 15. The axle of the cable guide wheel 10 is horizontally arranged in the left-right direction (that is, the cable guide wheel 10 can only rotate in the front-back direction). A groove is opened in the middle of the cable guide wheel 10, and the cable 11 is wound in the groove. Through the guide post 15 and the cable guide wheel 10, the laying direction of the cable 11 can be changed, so that the part of the cable 11 between the cable guide wheel 10 and the trigger plate 12 is arranged obliquely, while the part between the cable guide wheel 10 and the stop plate 8 is changed to be vertical. The directional setting of this arrangement better meets the actual working conditions on site: because sufficient backlash distance needs to be maintained, the installation position of the arrow-ground connector is far from the stop plate 8. Without the guide post 15 and the cable guide wheel 10, the cable 11 would pull the stop plate 8 at an angle, which might prevent the stop plate 8 from being lifted smoothly, and might also cause the stop plate 8 to tilt and be damaged, thus affecting the normal operation of the device. However, by changing the end of the cable 11 to a vertical direction through the guide post 15 and the cable guide wheel 10, the direction of the pulling force is consistent with the running direction of the stop plate 8, which can smoothly lift the stop plate 8.

[0043] Furthermore, the bottom of the support frame 5 is mounted on the launch pad 13 via bolts or other means, and a guide rail mounting plate 2 is welded to the top of the support frame 5. The height of the support frame 5 is determined based on the relative distance between the launch pad 13 and the rocket-to-ground connector. In a specific example, the support frame 5 is welded from square tubes of different specifications and forms the main frame structure. Its bottom is bolted to a plate-shaped fixing seat, which has an elongated hole. A bearing plate is welded onto the launch pad 13, and the bearing plate has threaded holes. During installation, the bearing plate and the fixing seat are connected together by bolts.

[0044] The aforementioned slider 1 is mounted on the guide rail mounting plate 2. Meanwhile, to facilitate fixing the rear end of the pulling component 7, a vertically erected pulling component fixing rod 6 is connected to the rear end of the support frame 5, and the rear end of the pulling component 7 can be hooked onto the pulling component fixing rod 6.

[0045] In addition, in order to reduce friction and increase the speed of slider 1 when it moves, guide rail 4 is provided on guide rail mounting plate 2, and a sliding groove matching guide rail 4 is provided below slider 1, so that slider 1 can slide along guide rail 4.

[0046] Furthermore, in order to adapt to the cuboid box structure of slider 1, such as Figure 4 As shown, the stop plate 8 can be designed as a portal structure consisting of a top crossbeam 82 and two columns 81 fixedly connected. It is made of welded plates and has a fixing point at the top for connecting the cable 11. The distance between the two columns 81 of the stop plate 8 is less than the end width of the slider 1, so that the rear end face of the slider 1 can abut against the front side of the two columns 81, thereby blocking the slider 1.

[0047] Meanwhile, a stop plate guide seat 3 is also provided above the support frame 5 (it can be directly installed on the support frame 5 or on the guide rail mounting plate 2). The stop plate guide seat 3 is located on the side of the stop plate 8 (one stop plate guide seat 3 is arranged on each side of the stop plate 8). Each stop plate guide seat 3 is provided with a side guide wheel 17 that contacts the column 81. Its function is to reduce the resistance when the stop plate 8 is lifted upward.

[0048] Furthermore, the side guide wheels 17 are divided into multiple groups along the height direction, each group including two side guide wheels 17 distributed front and rear. In a specific example, such as... Figure 4 As shown, each stop plate guide seat 3 is provided with two sets, one upper and one lower. Each set includes two side guide wheels 17 distributed front and rear, meaning that each stop plate guide seat 3 is provided with a total of four side guide wheels 17. The column 81 is sandwiched between the two side guide wheels 17 in the same set and is in contact with the rims of the two side guide wheels 17. In this way, while reducing friction, the two side guide wheels 17 in each set can also provide a limiting function for the stop plate 8, preventing it from shaking during its up and down movement.

[0049] Furthermore, an end-face guide wheel 14 is provided on the rear end face of the slider 1 to provide guidance for the top crossbeam 82, so as to reduce the resistance when the stop plate 8 moves up and down.

[0050] Furthermore, the traction device also includes an anti-fallback component to prevent the stop plate 8 from falling back after moving upwards to the top. The reason for this design is that, since the trigger plate 12 is connected to the ground portion 32 of the rocket-to-ground connector, when the rocket launches, as the trigger plate 12 flips and moves the stop plate 8, the slider 1 supporting the ground portion 32 of the rocket-to-ground connector will quickly retract. As a result, the trigger plate 12 will also retract along with it, causing the cable 11 to lose tension. The stop plate 8 will no longer be under upward tension and will inevitably begin to fall under the influence of gravity. In other words, the trigger plate 12 can only pull the stop plate 8 at the moment of triggering; during the retraction of the slider 1, if there is no other resistance, the stop plate 8 will fall spontaneously. If the stop plate 8 falls, and the slider 1 has not yet returned to its final side limit position, the falling stop plate 8 will come into contact with the backward-moving slider 1. Although the stop plate 8 will most likely straddle the slider 1 without affecting the overall backward movement of the slider 1, the interference between the two will still cause the slider 1 to operate poorly, making it difficult to complete the retreat task within the set time. There is still a risk that the rocket body will touch the ground part 32 of the rocket-to-ground connector. The anti-fall-back component can take various forms, such as a laterally movable pin-type structure. In the initial position, it is pressed against the side of the stop plate 8. When the stop plate 8 rises, the pin-type structure moves laterally and extends under the top crossbeam 82 of the stop plate 8, thereby restricting the fall of the stop plate 8.

[0051] Furthermore, a preferred structure of the anti-fallback component in this embodiment of the invention is as follows: Figure 6 As shown: The anti-falling component includes a stop block 9, which initially abuts against a stop plate 8. When the stop plate 8 moves upward, causing the stop block 9 to swing backward to its extreme position, the stop block 9 restricts the stop plate 8 from moving downward. At this time, the working principle of the anti-falling component is as follows: Figure 8 As shown, before and at the moment of rocket ignition, the stop block 9 does not extend into the inside of the gate-shaped stop plate 8 and does not hinder the upward movement of the stop plate 8. When the rocket ascends a certain distance and the trigger plate 12 moves, thereby pulling the stop plate 8 upward to the top position, the stop block 9 can swing backward, so that part of the stop block 9 is stuck below the top crossbeam 82 of the stop block 9. In this way, when the slider 1 retracts and causes the stop plate 8 to start falling spontaneously, it is stuck by the stop block 9, and the stop block 9 cannot continue to rotate backward due to the limit (for example, its lower part is against the gantry 16). At this time, the stop plate 8 cannot fall back, effectively avoiding the mutual interference between the stop plate 8 and the slider 1.

[0052] Furthermore, the support frame 5 is also equipped with a stop block mounting seat 22. The middle part of the stop block 9 is hinged to the stop block mounting seat 22, and the stop block mounting seat 22 is fixedly connected to the support frame 5 (specifically, it can be installed on the gantry 16). In order to ensure that the stop block 9 can swing to the predetermined position accurately and quickly when the stop plate 8 moves to the top position, and to ensure that the stopping function is performed subsequently, a stop torsion spring 21 can be provided between the stop block mounting seat 22 and the stop block 9, such as... Figure 8 As shown, when the stop plate 8 blocks the rear side of the slider 1, the rear end of the stop block 9 will stick to the top crossbeam 82 under the elastic force of the stop torsion spring 21. When the stop plate 8 is behind, since it is no longer blocked by the top crossbeam 82, the stop block 9 will swing backward rapidly under the elastic force, thus extending into the bottom of the top crossbeam 82.

[0053] Furthermore, such as Figure 6 As shown, the structure of the stop block 9 is preferably an L-shaped structure similar to an angle iron, which is formed by two sides fixedly connected. It is equivalent to having two support arms, front and rear. The rear support arm is used to block the stop plate 8, while the front support arm is used as a wrench. When the stop block 9 needs to be reset, one hand can pull up the stop plate 8, and the other hand can turn the front support arm forward so that the stop block 9 no longer obstructs the stop plate 8 from moving downward.

[0054] In addition, this embodiment of the invention also provides an arrow-to-ground connector, including an arrow-mounted portion 31, a ground portion 32, and the aforementioned pulling device, wherein the ground portion 32 is mounted on a slider 1.

[0055] In a specific example, the application process of the pull device for the arrow-to-ground connector is described as follows:

[0056] I) Rocket pre-launch propellant loading conditions

[0057] 1) Fix the support frame 5 onto the launch pad 13;

[0058] 2) Connect the ground part 32 of the arrow-ground connector to the arrow part 31 of the arrow-ground connector;

[0059] 3) Lift the stop plate 8 to allow the slider 1 to move forward without obstruction;

[0060] 4) Pull the slider 1 forward so that the elongated hole at the head of the slider 1 aligns with the mounting hole of the ground part 32 of the arrow-ground connector (during the process, the pulling component 7 is stretched and stores elastic potential energy).

[0061] 5) Adjust with adjusting shims until the ground part 32 of the arrow-ground connector reaches the appropriate height. Then connect the slider 1 to the ground part 32 of the arrow-ground connector with bolts. Do not tighten the bolts at this time.

[0062] 6) From back to front (i.e.) Figure 1 (In the counterclockwise direction) Twist the two stop blocks 9 (this process will twist the stop torsion spring 21 to store its elastic potential energy);

[0063] 7) Lower the stop plate 8 and release the slider 1. At this time, the stop plate 8 blocks the slider 1, ensuring that the pulling force of the pulling component 7 is applied to the stop plate 8.

[0064] 8) Loosen the two stop blocks 9 so that the stop blocks 9 abut against the stop plate 8;

[0065] 9) Now tighten any bolts that were not tightened in step 5;

[0066] 10) One end of the cable 11 is fixed to the top of the stop plate 8, and the other end is fixed to the trigger plate 12 of the trigger assembly. The cable 11 is taut by the stop plate guide structure (guide post 15 and cable guide wheel 10).

[0067] 11) At this point, the rocket-to-ground connector and traction device are in place, and the ground system can fuel or supply gas to the rocket through the rocket-to-ground connector.

[0068] II) Rocket "0-second" takeoff condition

[0069] 1) When the rocket takes off at "0" seconds, the rocket body drives the upper part 31 of the rocket-ground connector to move upward, so that it is gradually separated from the ground part 32 of the rocket-ground connector. When the two parts separate, the trigger plate 12 in the trigger assembly pulls the cable 11 forward under the action of the trigger torsion spring 18, lifting the stop plate 8. At the same time, the stop block 9 rotates into place under the action of the stop torsion spring 21. The stop block 9 extends into the bottom of the top crossbeam 82 of the stop plate 8 to prevent the stop plate 8 from falling and obstructing the retraction of the slider 1.

[0070] 2) At this time, the slider 1 is pulled back 300-800mm under the pulling force of the pulling component 7.

[0071] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the invention is presented with fewer features than all of the features of the single disclosed embodiment. Therefore, the appended claims are hereby explicitly incorporated into the detailed description, wherein each claim stands alone as a preferred embodiment of the invention.

[0072] The disclosed embodiments have been described above to enable any person skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of this disclosure. Therefore, this disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in this application.

[0073] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A traction device, characterized in that, include: The support frame (5) is fixedly connected to the fastener; The slider (1) that supports the ground part (32) of the arrow-ground connector is mounted on the support frame (5) and can move back and forth. A stop plate (8) for limiting the forward and backward movement of the slider (1) is provided on the support frame (5); The pulling component (7) is connected between the rear end of the slider (1) and the support frame (5); A triggering component is disposed between the arrow portion (31) of the arrow ground connector and the stop plate (8); When the arrow part (31) of the arrow-ground connector separates from the ground part (32) of the arrow-ground connector due to rocket launch, the triggering component triggers the stop plate (8) to move upward to a position where it no longer blocks the slider (1), so that the slider (1) moves backward under the pull of the pulling component (7).

2. The traction device as described in claim 1, characterized in that: The triggering assembly includes a trigger seat (19) fixedly connected to the ground part (32) of the arrow-ground connector and a trigger plate (12) for abutting against the arrow part (31) of the arrow-ground connector. The trigger plate (12) is hinged to the trigger seat (19). A trigger torsion spring (18) is also provided between the trigger plate (12) and the trigger seat (19). The trigger seat (19) is connected to the upper end of the stop plate (8) by a cable (11).

3. The traction device as described in claim 2, characterized in that, The support frame (5) is also provided with a guide column (15), and a cable guide wheel (10) is installed at the top of the guide column (15), and the cable (11) is wound around the cable guide wheel (10).

4. The traction device as described in claim 1, characterized in that, The support frame (5) is provided with a guide rail (4), and the slider (1) is slidably connected to the guide rail (4); the rear end of the support frame (5) is also connected to a traction component fixing rod (6), and the rear end of the traction component (7) is connected to the traction component fixing rod (6).

5. The traction device as described in claim 1, characterized in that, The stop plate (8) is a portal structure consisting of a top crossbeam (82) and two columns (81) fixedly connected; the support frame (5) is also provided with a stop plate guide seat (3), which is located on both sides of the stop plate (8), and the stop plate guide seat (3) is provided with a side guide wheel (17) that contacts the column (81).

6. The traction device as described in claim 5, characterized in that, The side guide wheels (17) are divided into multiple groups along the height direction, and each group includes two side guide wheels (17); the column (81) is sandwiched between the two side guide wheels (17) in the same group.

7. The traction device as described in claim 5, characterized in that, The rear end face of the slider (1) is also provided with an end face guide wheel (14) for guiding the top crossbeam (82).

8. The traction device as described in claim 1, characterized in that, It also includes an anti-fall-back component, which is used to prevent the stop plate (8) from falling back after it has moved upward to the top.

9. The traction device as described in claim 8, characterized in that, The anti-fall-back component includes a stop block (9), the initial position of which abuts against the stop plate (8); when the stop plate (8) moves upward and causes the stop block (9) to swing backward to its limit position, the stop block (9) restricts the stop plate (8) from moving downward.

10. The traction device as described in claim 9, characterized in that, The support frame (5) is also provided with a stop block mounting seat (22), and the stop block (9) is hinged to the stop block mounting seat (22); a stop torsion spring (21) is also provided between the stop block mounting seat (22) and the stop block (9) for pushing the stop block (9) to rotate from front to back.

11. An arrow-to-ground connector, characterized in that, It includes an arrow-ground connector upper part (31), an arrow-ground connector ground part (32), and a traction device as described in any one of claims 1-10, wherein the arrow-ground connector ground part (32) is connected to the slider (1).

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