A welding butt joint device for a solid rocket engine cable cover support

Abstract

The application discloses a kind of welding butt joint devices of solid rocket engine cable cover support, it is related to welding auxiliary equipment technical field, and welding butt joint device includes positioning base and engine shell, positioning base both sides are provided with positioning plate, further include cable cover support, positioning base is equipped with aperture, and multiple groups of installation parts are formed in the inner wall of aperture, the bottom end of installation part is equipped with butt joint cylinder, and positioning pressing plate is set on the opposite symmetry installation part, and positioning pressing plate is positioned to cable cover support, and the both sides of the upper end surface of positioning pressing plate are equipped with inserting rod, further be equipped with locking mechanism, by being equipped with the locking mechanism of inserting and being fixed between butt joint cylinder and inserting rod, the installation efficiency of positioning pressing plate is improved, so not only multiple cable cover supports can be fixed one-time, quickly and accurately, but also cable cover support is positioned by positioning mechanism, further guarantee the stability of cable cover support welding.

Description

Technical Field

[0001] This invention relates to the field of welding auxiliary equipment technology, and more specifically, to a welding and docking device for a solid rocket motor cable cover support. Background Technology

[0002] In the aerospace and power machinery manufacturing field, the engine, as the core power unit, directly affects the performance indicators and service safety of the entire machine through the assembly accuracy and reliability of its external structural components. As a key connecting component between the engine casing and the cable cover system, the cable cover support undertakes the combined functions of electromagnetic shielding, mechanical protection, and structural force transmission. Its assembly quality plays a decisive role in ensuring the stability and structural integrity of the cable system. In traditional processes, the welding of the cable cover support mainly relies on manual operation. Specifically, according to the geometric dimensions marked on the two-dimensional drawings, a steel tape measure is used to manually mark the positioning on the surface of the engine casing. Then, reference points are marked using tools such as scribers and center punches. Finally, the supports are installed one by one by visual alignment and fixed by positioning welding.

[0003] CN110977278A discloses a welding and docking device for cable cover supports of solid rocket motor casings, including a positioning base, a positioning plate, a rear connecting plate, N cable cover supports, and N sets of positioning components. The positioning plate and the rear connecting plate are respectively set at the left and right ends of the positioning base and are perpendicularly connected to the positioning base and fixed to the positioning base by connecting bolts. The N sets of positioning components are set on the working surface of the positioning base at a set interval. The cable cover supports are set below the positioning components and are pressed against the engine casing by the positioning components. Although the above device can accurately fix multiple cable cover supports and reduce the error of individual scribing and docking of the cable cover supports before welding, each positioning plate needs to be locked with two sets of bolts, which is cumbersome during subsequent disassembly. Therefore, we propose a welding and docking device for cable cover supports of solid rocket motors. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a welding and docking device for a solid rocket motor cable cover support.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a positioning base and an engine housing are included. Positioning plates are provided on both sides of the positioning base, and the positioning base and the engine housing are connected via the positioning plates. A cable cover support is also included. An opening is provided on the upper surface of the positioning base. Multiple sets of mounting portions protrude from both sides of the inner wall of the opening towards the center. A docking cylinder is provided at the bottom end of each mounting portion. A positioning pressure plate is provided on each symmetrical mounting portion. The positioning pressure plate positions the cable cover support. Insert rods are provided on both sides of the upper surface of the positioning pressure plate, and a locking mechanism is also provided. The locking mechanism includes a snap-fit ​​component disposed within the docking cylinder. A locking component that cooperates with the snap-fit ​​component is provided on the insert rod. An unlocking component is also provided on the insert rod, used to release the locked state of the snap-fit ​​component and the locking component.

[0006] Preferably, it further includes a positioning mechanism, which includes a fixing member disposed on the outer wall of the plug rod, a positioning tube disposed on the fixing member, and a pressing member cooperating with the positioning tube, the positioning tube and the pressing member cooperating to position the cable cover support.

[0007] Preferably, one end of the positioning base has an arc-shaped portion that mates with the engine housing. The positioning pressure plate has an inwardly recessed portion in the middle, and stepped portions are formed on both sides of the recessed portion. The stepped portions abut against the cable cover support, and an active space is formed between adjacent mounting portions.

[0008] Preferably, the mounting part has a mounting through hole, the docking cylinder has a snap-fit ​​hole communicating with the mounting through hole, and the docking cylinder has an annular chamber and four sets of openings surrounding the snap-fit ​​hole. The openings extend radially along the docking cylinder and communicate with the snap-fit ​​hole and the annular chamber.

[0009] Preferably, the snap-fit ​​component includes snap-fit ​​blocks and rubber rings. The four snap-fit ​​blocks are slidably disposed in the four sets of openings. The rubber ring passes through the annular cavity and sequentially passes through the four snap-fit ​​blocks. The side of the snap-fit ​​blocks that is close to each other is a wedge-shaped portion.

[0010] Preferably, the locking component includes a locking plate disposed at the top of the insertion rod, a compression spring sleeved on the outer wall of the insertion rod, one end of the compression spring disposed at the bottom end of the locking plate, the other end of the compression spring disposed at the upper surface of the positioning pressure plate, and a conical block disposed at the bottom end of the insertion rod, the upper surface of the conical block being recessed to form a groove.

[0011] Preferably, the insert rod has a movable cavity inside, and two limiting holes are symmetrically provided on the insert rod. The movable cavity can communicate with the outside through the limiting holes. The unlocking component includes a movable rod, which is disposed in the movable cavity. Two sets of movable rods pass through the insert rod and the locking plate and are connected to a pull plate. An auxiliary spring is sleeved on the outer wall of the movable rod. The top end of the auxiliary spring is fixed to the inner wall of the movable cavity. A limiting block is also sleeved on the outer wall of the movable rod. A second conical block is sleeved on the outer wall of the insert rod. The limiting block is connected to the second conical block through the limiting hole. A retaining ring is provided at the bottom end of the second conical block, and the retaining ring matches the contour of the retaining groove.

[0012] Preferably, the diameter of the first conical block gradually decreases from top to bottom, and the diameter of the second conical block gradually increases from top to bottom. The locking block can abut against the upper end face of the first conical block to limit the first conical block. When the second conical block moves downward, it pushes each of the locking blocks to move away from the insertion rod, so that the first conical block and the second conical block engage.

[0013] Preferably, the fixing member includes an inclined plate disposed between the two locking plates, vertical plates formed downward from the two inclined plates, a connecting plate formed between the two vertical plates, two positioning tubes respectively disposed on both sides of the upper surface of the connecting plate, and positioning blocks formed on the inner wall of the positioning tubes.

[0014] Preferably, the extrusion member includes an extrusion rod disposed within a positioning tube, a push spring sleeved on the outer wall of the extrusion rod, one end of the push spring being fixed to the upper end face of the positioning tube, the other end of the push spring being fixed to the top of the extrusion rod, a circumferential groove being provided on the outer wall of the extrusion rod, the positioning block being slidably connected to the circumferential groove accordingly, an extrusion wheel being provided at the bottom end of the extrusion rod, an extrusion part being formed on the extrusion wheel, the extrusion part being correspondingly abutting against the inner wall of the cable cover support, the extrusion rod being rotatably connected to the positioning pressure plate and being able to move vertically along with the positioning pressure plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In this invention, by providing a locking mechanism between the docking cylinder and the insertion rod that allows for insertion and fixation, the installation efficiency of the positioning pressure plate is improved. This not only allows for the quick and accurate fixation of multiple cable cover supports at once, but also enables the rapid installation of the positioning pressure plate through the locking mechanism, thereby improving the accuracy of the welding position of the cable cover support and the assembly efficiency.

[0017] 2. In this invention, by setting a positioning mechanism in the locking mechanism, the cable cover support is positioned by the cooperation of the positioning tube and the extrusion member, thereby further ensuring the stability of the cable cover support welding. In this way, the cable cover support can not only be locked by the positioning plate, but also the positioning mechanism can further ensure the stability of the cable cover support welding.

[0018] 3. In this invention, the first conical block contacts the locking block, and the arc-shaped contact surface of the first conical block contacts the wedge-shaped part, thereby causing the locking block to retract. When the first conical block moves to the bottom of the locking block, under the action of the rubber ring, the locking block is driven to abut against the upper end surface of the first conical block, thereby locking the insertion rod. To unlock, simply press the pull plate to make the first conical block and the second conical block engage. Hold the pull plate down and pull the insertion rod and the rest of the structure upward together. Since the locking block can no longer limit the insertion rod, the positioning pressure plate can be quickly removed, realizing quick disassembly and assembly of the positioning pressure plate.

[0019] 4. In this invention, the locking mechanism can fix multiple cable cover supports at once, quickly and accurately, reducing the error of individual scribing and docking of the cable cover supports before welding, improving the accuracy of the welding position of the cable cover supports and the assembly efficiency, and ensuring the interchangeability of the engine's external interfaces. Attached Figure Description

[0020] Figure 1 This invention provides an overall structural schematic diagram of a welding and docking device for a solid rocket motor cable cover support.

[0021] Figure 2 This invention provides a schematic diagram of the positioning base of a welding and docking device for a solid rocket motor cable cover support.

[0022] Figure 3 A cross-sectional schematic diagram of a welding and docking device for a solid rocket motor cable cover support is provided for this invention.

[0023] Figure 4 This invention provides a schematic diagram of the structure of a welding and docking device for a solid rocket motor cable cover support, showing the cooperation between a positioning pressure plate and a cable cover support.

[0024] Figure 5 A partial cross-sectional schematic diagram of a welding and docking device for a solid rocket motor cable cover support is provided for this invention.

[0025] Figure 6 This is another partial cross-sectional schematic diagram of a welding and docking device for a solid rocket motor cable cover support proposed in this invention.

[0026] Figure 7 A cross-sectional schematic diagram of the insertion rod of a welding and docking device for a solid rocket motor cable cover support proposed in this invention;

[0027] Figure 8 This invention provides a schematic diagram of the locking and unlocking components of a welding connection device for a solid rocket motor cable cover support.

[0028] Figure 9 This invention provides a cross-sectional schematic diagram of the docking cylinder of a welding docking device for a solid rocket motor cable cover support.

[0029] Figure 10 This invention provides a schematic diagram of the positioning tube and extrusion rod of a welding and docking device for a solid rocket motor cable cover support.

[0030] In the diagram: 100, Positioning base; 101, Engine housing; 102, Positioning plate; 103, Cable cover support; 104, Opening; 105, Mounting part; 106, Connecting cylinder; 107, Positioning pressure plate; 108, Insert rod; 109, Arc-shaped part; 110, Recessed part; 111, Stepped part; 112, Movement space; 201, Snap-fit ​​block; 202, Rubber ring; 203, Locking plate; 204, Compression spring; 205, Conical block one; 206, Movable rod; 207, Pull plate; 208, Auxiliary spring; 209, Limiting block; 210. Conical block two; 301, fixing part; 302, positioning tube; 303, extrusion part; 105a, mounting through hole; 106a, snap-fit ​​hole; 106b, annular chamber; 106c, opening; 108a, movable cavity; 108b, limiting hole; 201a, wedge-shaped part; 205a, slot; 210a, retaining ring part; 301a, inclined plate; 301b, vertical plate; 301c, connecting plate; 302a, positioning block; 303a, extrusion rod; 303b, push spring; 303c, surrounding groove; 303d, extrusion wheel; 303e, extrusion part. Detailed Implementation

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0034] Example 1 further illustrates the welding and docking device for a solid rocket motor cable cover support proposed in this invention. It includes a positioning base 100 and an engine housing 101. Positioning plates 102 are bolted to both sides of the positioning base 100, and the positioning base 100 and the engine housing 101 are connected by the positioning plates 102. It also includes a cable cover support 103. The upper surface of the positioning base 100 has an opening 104. Multiple sets of mounting portions 105 protrude from both sides of the inner wall of the opening 104 towards the center. A docking cylinder 10 is fixedly connected to the bottom end of each mounting portion 105. 6. A positioning pressure plate 107 is detachably installed on the symmetrical mounting part 105. The positioning pressure plate 107 positions the cable cover support 103. The two ends of the positioning pressure plate 107 are slidably connected with the insertion rod 108. One end of the positioning base 100 forms an arc-shaped part 109, which cooperates with the outer surface of the engine. The positioning pressure plate 107 is recessed inward in the middle to form a recessed part 110. Stepped parts 111 are formed on both sides of the recessed part 110. The stepped parts 111 abut against the cable cover support 103. An active space 112 is formed between adjacent mounting parts 105.

[0035] This invention further improves upon existing technology by refining the structure of the positioning plate 107. Insert rods 108 are slidably connected to both sides of the positioning plate 107, and corresponding docking cylinders 106 are provided within the positioning base 100 to engage with the insert rods 108. A locking mechanism is also provided to fix the two by inserting the insert rods 108 into the docking cylinders 106. This improves the installation efficiency of the positioning plate 107. This not only allows for the quick and accurate fixing of multiple cable cover supports 103 at once, but also enables rapid installation of the positioning plate 107 through the locking mechanism, improving the accuracy of the welding position and assembly efficiency of the cable cover supports 103.

[0036] Depend on Figures 1 to 5It can be seen that the number of positioning pressure plates 107 is determined by the number of cable cover supports 103. The positioning base 100 and positioning pressure plates 107 have a symmetrical structure on both sides. The positioning base 100, engine housing 101, and positioning plate 102 are installed together by bolts. The bottom surface of the positioning base 100 is an arc-shaped part 109 that matches the outer surface of the engine housing 101. The center line of the positioning base 100 extending in the vertical direction is completely coincident with the center line of the engine housing 101 extending in the vertical direction. The positioning plate 102 is in contact with the front end face of the engine housing 101. The sum of the lengths of the positioning base 100 and the positioning plate 102 is greater than 100. The length of the engine housing 101 of the cable cover support 103 to be welded is determined by pulling the positioning plate 107 upward during use, and then inserting the cable cover support 103 from the movable space 112. When it reaches the corresponding position, the positioning plate 107 is released, and the step portion 111 inside the positioning plate 107 is correspondingly locked on the cable cover support 103. Then, multiple sets of cable cover supports 103 are placed in the corresponding positions in sequence, and the positioning plate 107 locks the cable cover supports 103 in sequence. In this way, the device can accurately fix multiple cable cover supports 103, reducing the error of individual scribing and docking of the cable cover supports 103 before welding.

[0037] It also includes a locking mechanism, which includes a snap-fit ​​component disposed in the docking cylinder 106, a locking component disposed on the insertion rod 108 that cooperates with the snap-fit ​​component, and an unlocking component disposed on the insertion rod 108. The unlocking component is used to release the locking state of the snap-fit ​​component and the locking component. It also includes a positioning mechanism, which includes a fixing component 301 disposed on the outer wall of the insertion rod 108, a positioning tube 302 disposed on the fixing component 301, and a pressing component 303 disposed inside the positioning tube 302. The positioning tube 302 and the pressing component 303 cooperate to position the cable cover support 103.

[0038] To facilitate the installation of the positioning plate 107, the position of the positioning plate 107 is fixed by the cooperation of the snap-fit ​​and locking parts. When it is necessary to remove the positioning plate 107, simply press the unlocking part, which will release the locking state of the snap-fit ​​and locking parts, thereby realizing quick installation and removal of the positioning plate 107. In addition, the present invention is provided with a positioning mechanism, which uses the positioning tube 302 and the extrusion part 303 to position the cable cover support 103, further ensuring the welding stability of the cable cover support 103. Thus, the cable cover support 103 can not only be locked by the positioning plate 107, but also the positioning mechanism further ensures the welding stability of the cable cover support 103.

[0039] Working principle: In use, simply align the insertion rod 108 on the positioning plate 107 with the mounting through hole 105a, then insert the insertion rod 108 on the positioning plate 107 into the snap-fit ​​hole 106a through the mounting through hole 105a. This locking mechanism enables quick installation of the positioning plate 107. When welding the cable cover support 103, pull the positioning plate 107 upwards, then insert the cable cover support 103 from the movable space 112. When it reaches the corresponding position, release the positioning plate 107. The stepped part 111 is correspondingly locked onto the cable cover support 103. Then, multiple sets of cable cover supports 103 are placed in corresponding positions in sequence. The positioning pressure plate 107 locks the cable cover supports 103 in sequence. Due to the synchronous movement of the locking mechanism, the positioning mechanism further ensures the stability of the welding of the cable cover support 103. When removing the positioning pressure plate 107, simply press the unlocking part to release the locking state of the locking part and the locking part. This improves the accuracy of the welding position of the cable cover support 103 and the assembly efficiency.

[0040] Example 2

[0041] Based on Embodiment 1, the following technical features are added: The locking mechanism includes a snap-fit ​​component disposed within the docking cylinder 106; a locking component is disposed on the insertion rod 108 to cooperate with the snap-fit ​​component; an unlocking component is also disposed on the insertion rod 108 to release the locking state of the snap-fit ​​component and the locking component; an installation through hole 105a is provided on the mounting part 105; a snap-fit ​​hole 106a communicating with the installation through hole 105a is provided on the docking cylinder 106; and the snap-fit ​​hole 106a surrounds the inside of the docking cylinder 106. a) It is provided with an annular chamber 106b and four sets of openings 106c. The openings 106c extend radially along the docking cylinder 106 and connect the snap-fit ​​hole 106a and the annular chamber 106b. The snap-fit ​​component includes snap-fit ​​blocks 201 and rubber rings 202. The four snap-fit ​​blocks 201 are slidably disposed in the four sets of openings 106c respectively. The rubber rings 202 are disposed in the annular chamber 106b and pass through the four snap-fit ​​blocks 201 in sequence. The side of the snap-fit ​​blocks 201 that is close to each other is a wedge-shaped part 201a.

[0042] Depend on Figures 5 to 9It can be seen that the docking cylinder 106 is approximately cylindrical in shape, with a cylindrical snap-fit ​​hole 106a inside. The insertion rod 108 on the positioning pressure plate 107 is inserted into the snap-fit ​​hole 106a through the mounting through hole 105a. The docking cylinder 106 has an annular chamber 106b and four sets of square openings 106c inside. The annular chamber 106b is connected to the snap-fit ​​hole 106a through the openings 106c. A snap-fit ​​block 2 is slidably connected in the openings 106c. 01. The locking block 201 is confined within the opening 106c by the rubber ring 202, and the side of the locking block 201 that is close to each other is a wedge-shaped part 201a. When the insert rod 108 is pressed down, the insert rod 108 contacts the wedge-shaped part 201a, pushing the locking block 201 to expand and deform the rubber ring 202, thereby causing the locking block 201 to retract into the opening 106c. After the external force is removed, the rubber ring 202 contracts and drives the locking block 201 to reset.

[0043] The locking component includes a locking plate 203 set at the top of the insertion rod 108, and a compression spring 204 sleeved on the outer wall of the insertion rod 108. The compression spring 204 is a carbon spring with high strength and easy to use. One end of the compression spring 204 is set at the bottom of the locking plate 203, and the other end of the compression spring 204 is fixedly connected to the upper end of the positioning pressure plate 107. A conical block 205 is fixedly connected to the bottom of the insertion rod 108, and a groove 205a is formed by the recess on the upper end surface of the conical block 205.

[0044] Depend on Figures 6 to 8 It can be seen that the positioning plate 107 is slidably connected to the outer wall of the insertion rod 108, and is connected to the locking plate 203 through the compression spring 204. When the positioning plate 107 is pulled upward, the compression spring 204 is compressed and deformed. When the cable cover support 103 is placed in the corresponding position, the positioning plate 107 is released. Under the action of the compression spring 204, the positioning plate 107 is driven to fix the cable cover support 103. In order to ensure the stability of the insertion rod 108 when locked, a conical block 20 is fixedly connected to the bottom of the insertion rod 108. 5. The diameter of the conical block 205 gradually decreases from top to bottom. Therefore, when the conical block 205 contacts the locking block 201, its arc-shaped contact surface contacts the wedge-shaped part 201a, thereby driving the locking block 201 to move away from the insertion rod 108. When the conical block 205 moves vertically to below the locking block 201, under the action of the rubber ring 202, it drives the locking block 201 to move closer to the insertion rod 108, so that the wedge-shaped part 201a abuts against the upper end surface of the conical block 205, thereby locking the insertion rod 108.

[0045] The insertion rod 108 has a movable cavity 108a inside, and two limiting holes 108b are symmetrically provided on the insertion rod 108. The movable cavity 108a can communicate with the outside through the limiting holes 108b. The unlocking component includes a movable rod 206, which is located in the movable cavity 108a. The two sets of movable rods 206 pass through the insertion rod 108 and the locking plate 203 and are connected to a pull plate 207. An auxiliary spring 208 is sleeved on the outer wall of the movable rod 206. The auxiliary spring 208 is a carbon spring, which has high strength and is easy to use. The top end of the auxiliary spring 208 is fixed to the inner wall of the movable cavity 108a, and the bottom end of the auxiliary spring 208 is fixed to the outer wall of the movable rod 206. A limiting block 209 is also sleeved on the outer wall of the movable rod 206. A conical block 210 is sleeved on the outer wall of the insertion rod 108. The limiting block 209 is connected to the conical block 210 through the limiting hole 108b. A retaining ring 210a is provided at the bottom end of the conical block 210. The retaining ring 210a matches the contour of the retaining groove 205a.

[0046] Depend on Figures 6 to 9 It can be seen that both sides of the insert rod 108 have cylindrical movable cavities 108a inside. Movable rods 206 are slidably connected in the movable cavities 108a. In order to facilitate the control of the two sets of movable rods 206, the tops of the two sets of movable rods 206 pass through the insert rod 108 and the locking plate 203 and are fixedly connected to the pull plate 207. Therefore, by pressing the pull plate 207, the movable rods 206 can be moved downward in the vertical direction, which can drive the conical block 210 to move through the limit block 209, so that the conical block 210 moves closer to the side of the conical block 205, and the retaining ring 210a abuts against the groove 205a.

[0047] In the locked state, the locking block 201 abuts against the upper surface of the first conical block 205, located between the first conical block 205 and the second conical block 210, thereby locking the insertion rod 108. When unlocking is required, simply press the pull plate 207, and the movable rod 206 will drive the second conical block 210 to move downward. When the second conical block 210 moves downward, it abuts against the locking block 201, causing all four locking blocks 201 to move simultaneously away from the insertion rod 108, and the first conical block 205 and the second conical block 210 to fit together.

[0048] Working principle: As shown in Example 1, when installing the positioning plate 107, simply align the insertion rod 108 on the positioning plate 107 with the mounting through hole 105a. Then, the insertion rod 108 on the positioning plate 107 is inserted into the snap-fit ​​hole 106a through the mounting through hole 105a. At this time, the conical block 205 moves downward. When it comes into contact with the snap-fit ​​block 201, the arc-shaped contact surface of the conical block 205 abuts against the wedge-shaped part 201a, pushing the snap-fit ​​block 201 to move away from the insertion rod 108. When the conical block 205 moves to below the snap-fit ​​block 201, under the action of the rubber ring 202, the snap-fit ​​block 201 moves closer to the insertion rod 108, and the wedge-shaped part abuts against the upper end face of the conical block 205, thereby locking the insertion rod 108. This completes the installation of the positioning plate 107.

[0049] To unlock, simply press the pull plate 207 to move the movable rod 206 downwards, causing the second conical block 210 to move downwards. As the second conical block 210 moves downwards, it pushes the locking block 201, causing the locking block 201 to move away from the insertion rod 108 until the first conical block 205 and the second conical block 210 engage. At this point, the locking block 201 is no longer abutting against the upper surface of the first conical block, releasing the lock on the insertion rod 108. Keep pressing the pull plate 207 down while simultaneously moving the insertion rod 1... 08, along with the rest of the structure, is pulled upwards. Since the locking block 201 can no longer limit the insertion rod 108, the positioning pressure plate 107 can be quickly removed, improving the working efficiency of the device. Furthermore, after unlocking, the external force applied to the pull plate 207 is removed, and the movable rod 206 can move upwards relative to the insertion rod 108 under the elastic force of the auxiliary spring 208, so that the cone block 1 205 and the cone block 210 are separated, thus facilitating the next round of locking operations.

[0050] Example 3

[0051] Based on Embodiment 2, the following technical features are added: It also includes a positioning mechanism, which includes a fixing member 301 disposed on the outer wall of the insertion rod 108, a positioning tube 302 disposed on the fixing member 301, and a pressing member 303 cooperating with the positioning tube 302. The positioning tube 302 and the pressing member 303 cooperate to position the cable cover support 103. The fixing member 301 includes an inclined plate 301a fixedly connected between the two locking plates 203. Vertical plates 301b are formed downward from the two inclined plates 301a. A connecting plate 301c is formed between the two vertical plates 301b. Two positioning tubes 302 are respectively disposed on both sides of the upper end face of the connecting plate 301c. A positioning block 302a is formed on the inner wall of the positioning tube 302.

[0052] Depend on Figures 3 to 6 as well as Figure 9 and Figure 10It is understood that, in order to ensure the stability of the welding of the cable cover support 103, the present invention further defines the structure of the locking plate 203. The two sides of the locking plate 203 that are close to each other are respectively connected to the inclined plate 301a. The free end of the inclined plate 301a is connected to the vertical plate 301b, and the two sets of vertical plates 301b are connected to the connecting plate 301c. Since the above structure is fixed to the locking plate 203, and the positioning pressure plate 107 has a recess 110, the recess 110 corresponds to the position of the vertical plate 301b and the connecting plate 301c. Therefore, when the positioning pressure plate 107 is pulled, it will not affect the above structure. At the same time, the device has positioning tubes 302 fixed on both sides of the upper end face of the connecting plate 301c.

[0053] The extrusion component 303 includes an extrusion rod 303a disposed in the positioning tube 302. A push spring 303b is sleeved on the outer wall of the extrusion rod 303a. The push spring 303b is a carbon spring with high strength and is easy to use in daily work. One end of the push spring 303b is fixed to the upper end face of the positioning tube 302, and the other end of the push spring 303b is fixed to the top of the extrusion rod 303a. A surrounding groove 303c is provided on the outer wall of the extrusion rod 303a. The positioning block 302a is correspondingly slidably connected in the surrounding groove 303c. An extrusion wheel 303d is fixedly connected to the bottom end of the extrusion rod 303a. An extrusion part 303e is formed on the extrusion wheel 303d. The extrusion wheel 303d is a cam structure, and the extrusion part 303e is the eccentric end of the cam. The extrusion part 303e is correspondingly pressed against the inner wall of the cable cover support 103. The extrusion rod 303a is rotatably connected to the positioning pressure plate 107 and can move with the positioning pressure plate 107 in the vertical direction.

[0054] To further position the cable cover support 103, a pressing rod 303a is connected inside the positioning tube 302 via a push spring 303b. The outer wall of the pressing rod 303a is provided with a surrounding groove 303c, and a positioning block 302a is formed on the inner wall of the positioning tube 302. The positioning block 302a is correspondingly slidably connected in the surrounding groove 303c. When the positioning plate 107 drives the pressing rod 303a to move vertically, since the position of the positioning tube 302 is fixed, the pressing rod 303a rotates around its own axis under the interaction of the positioning block 302a and the surrounding groove 303c, thereby driving the pressing wheel 303d to rotate. When the pressing rod 303a moves upward, the two pressing parts 303e rotate to the side where the two pressing wheels 303d are close to each other. When the pressing rod 303a moves downward, the two pressing parts 303e rotate to the side where the two pressing wheels 303d are far apart from each other, and simultaneously press the inner side of the cable cover support 103.

[0055] Working principle: As shown in Example 1, when the positioning plate 107 is pulled upward, its pressing rod 303a moves accordingly. Since the positioning block 302a is correspondingly slidably connected in the surrounding groove 303c, under the interaction of the positioning block 302a and the surrounding groove 303c, the pressing part 303e on the pressing wheel 303d is driven to rotate. When the pressing rod 303a moves upward, the two pressing parts 303e rotate to the side where the two pressing wheels 303d are close to each other. When the pressing rod 303a moves downward, the two pressing parts 303e rotate to the side where the two pressing wheels 303d are far apart from each other, and simultaneously press the inner side of the cable cover support 103, thus further locking the cable cover support 103.

[0056] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A welding and docking device for a solid rocket motor cable cover support, comprising a positioning base (100) and an engine housing (101), wherein positioning plates (102) are provided on both sides of the positioning base (100), and the positioning base (100) and the engine housing (101) are connected by the positioning plates (102), and further comprising a cable cover support (103), characterized in that, The upper surface of the positioning base (100) is provided with an opening (104). The inner walls of the opening (104) protrude towards the center on both sides to form multiple sets of mounting parts (105). The bottom end of each mounting part (105) is provided with a docking cylinder (106). A positioning pressure plate (107) is provided on the symmetrical mounting part (105). The positioning pressure plate (107) positions the cable cover support (103). The two ends of the positioning pressure plate (107) are slidably connected with plug rods (108). A locking mechanism is also provided, which includes a snap-fit ​​component disposed in the docking cylinder (106), a locking component that cooperates with the snap-fit ​​component on the insert rod (108), and an unlocking component on the insert rod (108), which is used to release the locking state of the snap-fit ​​component and the locking component; It also includes a positioning mechanism, which includes a fixing member (301) disposed on the outer wall of the plug (108), a positioning tube (302) provided on the fixing member (301), and a pressing member (303) cooperating with the positioning tube (302). The positioning tube (302) and the pressing member (303) cooperate to position the cable cover support (103). The locking component includes a locking plate (203) disposed at the top of the insert rod (108), and a compression spring (204) sleeved on the outer wall of the insert rod (108). One end of the compression spring (204) is disposed at the bottom end of the locking plate (203), and the other end of the compression spring (204) is disposed on the upper surface of the positioning pressure plate (107). The fixing member (301) includes an inclined plate (301a) disposed between the two locking plates (203) on both sides, a vertical plate (301b) formed downward from the inclined plates (301a) on both sides, a connecting plate (301c) formed between the two vertical plates (301b), and two positioning tubes (302) respectively disposed on both sides of the upper end face of the connecting plate (301c), and a positioning block (302a) formed on the inner wall of the positioning tube (302). The extrusion member (303) includes an extrusion rod (303a) disposed inside a positioning tube (302). A push spring (303b) is sleeved on the outer wall of the extrusion rod (303a). One end of the push spring (303b) is fixed to the upper end face of the positioning tube (302), and the other end of the push spring (303b) is fixed to the top of the extrusion rod (303a). A circumferential groove (303c) is provided on the outer wall of the extrusion rod (303a). The positioning block (303a) is... 2a) The corresponding sliding connection is in the surrounding groove (303c). The bottom end of the extrusion rod (303a) is provided with an extrusion wheel (303d). An extrusion part (303e) is formed on the extrusion wheel (303d). The extrusion part (303e) abuts against the inner wall of the cable cover support (103). The extrusion rod (303a) is rotatably connected to the positioning pressure plate (107) and can move vertically along with the positioning pressure plate (107).

2. The welding and docking device for a solid rocket motor cable cover support according to claim 1, characterized in that, The positioning base (100) has an arc-shaped part (109) at one end, which cooperates with the engine housing (101). The positioning pressure plate (107) has a recessed part (110) in the middle, and stepped parts (111) are formed on both sides of the recessed part (110). The stepped parts (111) abut against the cable cover support (103) respectively, and an active space (112) is formed between adjacent mounting parts (105).

3. The welding and docking device for a solid rocket motor cable cover support according to claim 2, characterized in that, The mounting part (105) is provided with a mounting through hole (105a), and the docking cylinder (106) is provided with a snap-fit ​​hole (106a) that communicates with the mounting through hole (105a). The docking cylinder (106) is provided with an annular chamber (106b) and four sets of openings (106c) surrounding the snap-fit ​​hole (106a). The openings (106c) extend radially along the docking cylinder (106) and communicate with the snap-fit ​​hole (106a) and the annular chamber (106b).

4. The welding and docking device for a solid rocket motor cable cover support according to claim 3, characterized in that, The snap-fit ​​component includes snap-fit ​​blocks (201) and rubber rings (202). The four snap-fit ​​blocks (201) are slidably disposed in the four sets of openings (106c). The rubber rings (202) are inserted into the annular chamber (106b) and pass through the four snap-fit ​​blocks (201) in sequence. The side of the snap-fit ​​blocks (201) that are close to each other is a wedge-shaped part (201a).

5. The welding and docking device for a solid rocket motor cable cover support according to claim 4, characterized in that, The bottom end of the insertion rod (108) is provided with a conical block (205), and the upper end surface of the conical block (205) is recessed to form a groove (205a).

6. The welding and docking device for a solid rocket motor cable cover support according to claim 5, characterized in that, The insert rod (108) has a movable cavity (108a) inside, and two limiting holes (108b) are symmetrically provided on the insert rod (108). The movable cavity (108a) can communicate with the outside through the limiting holes (108b). The unlocking component includes a movable rod (206), which is located in the movable cavity (108a). Two sets of movable rods (206) pass through the insert rod (108) and the locking plate (203) and are connected to a pull plate (207). A sleeve is fitted on the outer wall of the movable rod (206). An auxiliary spring (208) is provided, the top end of which is fixed to the inner wall of the movable cavity (108a). A limiting block (209) is also sleeved on the outer wall of the movable rod (206). A conical block (210) is sleeved on the outer wall of the insertion rod (108). The limiting block (209) is connected to the conical block (210) through the limiting hole (108b). A retaining ring (210a) is provided at the bottom end of the conical block (210), and the retaining ring (210a) matches the contour of the retaining groove (205a).

7. The welding and docking device for a solid rocket motor cable cover support according to claim 6, characterized in that, The diameter of the first conical block (205) gradually decreases from top to bottom, and the diameter of the second conical block (210) gradually increases from top to bottom. The snap-fit ​​block (201) can abut against the upper end face of the first conical block (205) to limit the first conical block (205). When the second conical block (210) moves downward, it pushes each snap-fit ​​block (201) to move away from the insertion rod (108), so that the first conical block (205) and the second conical block (210) are engaged.

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