Quick assembly and positioning tool for solid engine shell external part

Abstract

The application discloses a kind of solid motor shell outer part quick assembly positioning tool, including workbench, positioning support component, rheological clamping component and cooling temperature control component, the upper surface of workbench is equipped with positioning support component, positioning support component is equipped with rheological clamping component inside, the outer surface of workbench is equipped with cooling temperature control component, the present application can be quickly completed with the cooperation of electric push rod, hydraulic rod, drive motor, bidirectional screw rod, arc fixed block one, arc fixed block two and protrusion groove cooperation with each other The coaxial positioning and circumferential locking of installation base and solid motor shell, realize the automatic centering clamping of installation base and solid motor shell, by the coordination of non-newtonian fluid chamber, non-newtonian fluid and silica gel pad in arc fixed block one and arc fixed block two inside, can realize the conversion of kinetic energy to heat energy under the action of welding vibration, effectively block welding gun vibration to workpiece and tool transmission.

Description

Technical Field

[0001] This invention relates to the field of solid rocket motor manufacturing technology, and more specifically, to a rapid assembly and positioning fixture for the outer components of a solid rocket motor casing. Background Technology

[0002] The rapid assembly and positioning fixture for solid rocket motor casing outer components is a specialized process equipment customized for welding and installation of external components distributed around the outer circumference of solid rocket motor casings. Its core function is to replace manual scribing and measurement, enabling rapid and high-precision positioning and clamping of external components. It is particularly important that the solid rocket motor casing needs to be welded to the mounting base. The end face of the solid rocket motor casing must be kept coaxial, perpendicular and evenly spaced with the mounting base. The fixture enables rapid centering and positioning of the solid rocket motor casing and the base, preventing eccentricity, tilting or deformation during the welding process.

[0003] When using existing quick assembly and positioning fixtures for solid rocket motor housing components, the fixture is usually first fitted onto the solid rocket motor housing and axially positioned using an annular boss. Then, the fixture is securely fixed to the solid rocket motor housing using a radial locking mechanism. Subsequently, the solid rocket motor housing and the fixture are placed together on the mounting base, and welding is then initiated. After welding is completed, the locking mechanism is released, and the fixture is axially moved off the solid rocket motor housing along a preset channel, completing the entire assembly and positioning operation.

[0004] In practical applications, existing technologies are prone to slight slippage or vibration of the solid rocket motor housing due to vibrations generated during welding. Furthermore, the concentrated heat during welding can cause asynchronous thermal expansion and deformation of the solid rocket motor housing and the tooling, affecting the accuracy of the weld trajectory and the dimensional accuracy of the workpiece after welding. Therefore, it is necessary to provide a quick assembly and positioning tooling for the outer components of the solid rocket motor housing to address the above technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a quick assembly and positioning fixture for the outer components of a solid engine housing, in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, an embodiment of the present invention provides the following technical solution: A quick assembly and positioning fixture for the outer components of a solid rocket motor housing includes a worktable, a positioning support assembly, a rheological clamping assembly, and a cooling and temperature control assembly. The positioning support assembly is mounted on the upper surface of the worktable, and the rheological clamping assembly is installed inside the positioning support assembly. The cooling and temperature control assembly is mounted on the outer surface of the worktable. The positioning support assembly includes a pair of connecting plates that are centrally symmetrically connected to the upper surface of the worktable. An electric push rod is fixedly connected to one side of each of the two connecting plates. An arc-shaped fixing block is installed at one end of each electric push rod. A mounting base is placed on the upper surface of the worktable. The upper surface of the mounting base abuts against the solid rocket motor housing, and two arc-shaped fixing blocks abut against the outer surface of the solid rocket motor housing.

[0007] The rheological clamping assembly includes a non-Newtonian fluid chamber installed inside the arc-shaped fixing block one and the arc-shaped fixing block two, and a partition plate is fixedly connected inside the non-Newtonian fluid chamber; the cooling and temperature control assembly includes a refrigerator installed symmetrically on the outer surface of the workbench, and a refrigeration chamber is installed inside the arc-shaped fixing block one and the arc-shaped fixing block two near the partition plate.

[0008] As a further improvement of the present invention, the bottom of the workbench is fixedly connected with a plurality of casters, the outer surface of the workbench is equipped with control buttons, the upper surface of the workbench is fixedly connected with a support frame, and the lower surface of the support frame is fixedly connected with a hydraulic rod.

[0009] As a further improvement of the present invention, a positioning frame is installed at one end of the hydraulic rod, and a drive motor is fixedly connected to the inner cavity side wall of the positioning frame. Temperature sensor 1 is installed inside the arc-shaped fixing block 1 and arc-shaped fixing block 2, and temperature sensor 2 is installed inside the refrigeration unit.

[0010] As a further improvement of the present invention, the output shaft of the drive motor is fixedly connected to a bidirectional lead screw via a coupling, and the outer surface of the bidirectional lead screw is threaded with two sleeves, the sides of the two sleeves being respectively connected to the outer surface of the arc-shaped fixing block.

[0011] As a further improvement of the present invention, a slide rail is installed inside the positioning frame, the outer surfaces of the two sleeves are slidably connected to the inside of the slide rail, and the other end of the bidirectional lead screw is connected to the inner cavity side wall of the positioning frame through a bearing seat.

[0012] As a further improvement of the present invention, silicone pads are fixedly connected to the outer surfaces of the first and second arc-shaped fixing blocks. A protrusion is fixedly connected to the outer surface of the first arc-shaped fixing block near the silicone pad. Multiple grooves are provided inside the solid engine housing. The protrusions are engaged with the inside of the grooves. The non-Newtonian fluid chamber is filled with non-Newtonian fluid. The partition plate is made of a high thermal conductivity metal material.

[0013] As a further improvement of the present invention, both of the refrigerators are connected to a circulating conveying pipe, and a plurality of connecting pipes are installed on the outer surface of the circulating conveying pipe. A condensing coil is installed inside the refrigeration chamber, and one end of the plurality of connecting pipes is connected to the water inlet of the condensing coil.

[0014] As a further improvement of the present invention, the refrigerator is internally connected to a circulation recovery pipe, and multiple recovery pipes are installed on the outer surface of the circulation recovery pipe, with one end of each recovery pipe connected to the water outlet of the condenser coil.

[0015] As a further improvement of the present invention, control valves are installed on the outer surfaces of both the circulating conveying pipe and the circulating recovery pipe, and one-way valves are installed on the outer surfaces of both the circulating conveying pipe and the circulating recovery pipe above the control valves.

[0016] As a further improvement of the present invention, a plurality of support blocks are centrally symmetrically installed on the upper surface of the workbench, and the circulating conveying pipe and the circulating recovery pipe are both connected to the interior of the support blocks.

[0017] Compared with the prior art, the advantages of this invention are: (1) This solution uses electric push rod, hydraulic rod, drive motor, two-way screw, arc-shaped fixing block one, arc-shaped fixing block two and convex groove to quickly complete the coaxial positioning and circumferential locking of the mounting base and solid engine housing, realize the automatic centering and clamping of the mounting base and solid engine housing, avoid the positioning error and clamping looseness caused by manual scribing and manual adjustment, thus ensuring the stability of the workpiece position during welding, and significantly improving the coaxiality, perpendicularity and assembly accuracy of the welding of the mounting base and solid engine housing.

[0018] (2) Through the coordination of the non-Newtonian fluid chamber inside the arc-shaped fixing block one and arc-shaped fixing block two, the non-Newtonian fluid and the silicone pad structure can realize the conversion and dissipation of kinetic energy into thermal energy under the action of welding vibration, effectively blocking the transmission of welding gun vibration to the workpiece and tooling, avoiding the defects of slight slippage, vibration and positioning offset of the shell caused by welding vibration, thereby maintaining the accuracy of the weld trajectory and improving the welding forming quality and product consistency.

[0019] (3) The circulating cooling structure consisting of a chiller, circulating conveying pipe, condensing coil, cooling chamber and partition plate can continuously and uniformly cool and dissipate heat from non-Newtonian fluid, arc-shaped fixed block and shell, and remove vibration damping friction heat and welding high temperature heat in time, avoiding non-Newtonian fluid temperature rise failure, asynchronous thermal expansion of shell and tooling and jamming defects caused by heat accumulation, thereby ensuring stable vibration damping performance, suppressing thermal deformation, ensuring the dimensional accuracy of workpiece after welding, and improving the reliability of tooling operation and the stability of continuous operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This is a cross-sectional view of the overall structure of the present invention; Figure 5 This is a partial structural cross-sectional view of the entire invention; Figure 6 This is a partial structural cross-sectional view of the positioning support component of the present invention; Figure 7 This is a partial structural cross-sectional view of the rheological clamping assembly of the present invention.

[0021] Explanation of the labels in the diagram: 1. Workbench; 101. Casters; 102. Support frame; 103. Control button; 104. Mounting base; 105. Solid engine housing; 2. Positioning support assembly; 201. Hydraulic rod; 202. Positioning frame; 203. Drive motor; 204. Two-way lead screw; 205. Slide rail; 206. Sleeve; 207. Arc-shaped fixing block one; 208. Arc-shaped fixing block two; 209. Electric push rod; 210 1. Connecting plate; 3. Rheological clamping assembly; 301. Non-Newtonian fluid chamber; 302. Silicone pad; 303. Protrusion; 304. Non-Newtonian fluid; 305. Partition plate; 4. Cooling and temperature control assembly; 401. Refrigeration unit; 402. Circulation delivery pipe; 403. Circulation recovery pipe; 404. Condensation coil; 405. Connecting pipe; 406. Control valve; 407. Check valve; 408. Refrigeration chamber; 409. Support block. Detailed Implementation

[0022] The technical solution 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] Example 1: Please see Figure 1 - Figure 6A quick assembly and positioning fixture for the outer components of a solid rocket motor housing includes a worktable 1. The worktable 1 is made of Q355B low-alloy high-strength steel and can bear the weight of the solid rocket motor housing 105, the mounting base 104 and other components. It can also resist vibration and impact during the welding process and avoid deformation that could affect the positioning accuracy. A positioning support component 2 is installed on the upper surface of the worktable 1.

[0024] The positioning support assembly 2 includes a pair of connecting plates 210 that are centrally symmetrically connected to the upper surface of the workbench 1. Electric push rods 209 are fixedly connected to the opposite sides of the two connecting plates 210. An arc-shaped fixing block 208 is installed at one end of the electric push rod 209. A mounting base 104 is placed on the upper surface of the workbench 1. The upper surface of the mounting base 104 abuts against a solid engine housing 105. Two arc-shaped fixing blocks 207 abut against the outer surface of the solid engine housing 105. By activating the electric push rods 209, the arc-shaped fixing blocks 208 are pushed closer to or away from the mounting base 104, thereby achieving lateral clamping and loosening of the mounting base 104 and ensuring that the mounting base 104 does not undergo radial displacement during the welding process.

[0025] The bottom of the workbench 1 is fixedly connected to multiple casters 101, which allow for flexible movement of the entire fixture. This facilitates adjustment of the fixture's position according to the production site layout, meeting the assembly needs of different workstations. Each caster 101 has a built-in braking device that locks in place to prevent displacement during operation. Control buttons 103 are mounted on the outer surface of the workbench 1. These buttons are waterproof and dustproof and are used to start and stop the actuators and adjust operating parameters. A support frame is fixedly connected to the upper surface of the workbench 1. 102. A hydraulic rod 201 is fixedly connected to the lower surface of the support frame 102. A positioning frame 202 is installed at one end of the hydraulic rod 201. A drive motor 203 is fixedly connected to the inner cavity side wall of the positioning frame 202. The hydraulic rod 201 is a double-acting hydraulic rod 201. By starting the hydraulic rod 201, the positioning frame 202 is moved up and down to adjust the height of the positioning frame 202 to adapt to solid engine housings 105 of different sizes. At the same time, it provides downward pressure to the positioning frame 202 to help fix the solid engine housing 105 and enhance positioning stability.

[0026] Temperature sensor 1 is installed inside arc-shaped fixing block 1 207 and arc-shaped fixing block 2 208, and temperature sensor 2 is installed inside the refrigeration unit 401. Both temperature sensors 1 and 2 are thermocouple sensors. Temperature sensor 1 detects the temperature of arc-shaped fixing block 1 207 and arc-shaped fixing block 2 208 in real time and transmits the temperature signal to the control module to provide a basis for the operation of the cooling temperature control component 4. The output shaft of the drive motor 203 is fixedly connected to a bidirectional lead screw 204 through a coupling. Two sleeves 206 are threadedly connected to the outer surface of the bidirectional lead screw 204. The sides of 6 are connected to the outer surface of the arc-shaped fixing block 207 respectively. The positioning frame 202 is equipped with a slide rail 205. The outer surfaces of the two sleeves 206 are slidably connected to the inside of the slide rail 205. The other end of the bidirectional screw 204 is connected to the inner cavity side wall of the positioning frame 202 through the bearing seat. The bidirectional screw 204 is driven to rotate by the drive motor 203, which in turn drives the two sleeves 206 to move relative to or towards each other. When the sleeves 206 move, they will drive the two arc-shaped fixing blocks 207 to approach or move away from the solid engine housing 105, thereby achieving clamping and positioning of the solid engine housing 105.

[0027] By operating the control button 103, the two electric push rods 209 are activated to drive the arc-shaped fixing block 208 to move towards the mounting base 104, so that the arc-shaped fixing block 208 firmly fixes the mounting base 104. Then, the solid engine housing 105 is placed on the mounting base 104, and the posture of the solid engine housing 105 is initially adjusted so that its bottom is in close contact with the mounting base 104. At the same time, the hydraulic rod 201 is activated by the control button 103 to drive the positioning frame 202 to move downward, so as to move the two arc-shaped fixing blocks 207 closer to the middle of the solid engine housing 105. Then, the drive motor 203 is activated to drive the bidirectional lead screw 204 to rotate. The bidirectional lead screw 204 drives the two sleeves 206 to move towards each other along the slide rail 205, thereby moving the two arc-shaped fixing blocks 207 closer to the solid engine housing 105, thus clamping the solid engine housing 105.

[0028] Example 2: Please see Figure 7Based on Embodiment 1, a rheological clamping assembly 3 is installed inside the positioning support assembly 2. The rheological clamping assembly 3 includes a non-Newtonian fluid chamber 301 installed inside the arc-shaped fixing block 1 207 and the arc-shaped fixing block 2 208. A partition plate 305 is fixedly connected inside the non-Newtonian fluid chamber 301. Silicone pads 302 are fixedly connected to the outer surfaces of the arc-shaped fixing block 1 207 and the arc-shaped fixing block 2 208. A protrusion 303 is fixedly connected to the outer surface of the arc-shaped fixing block 1 207 near the silicone pad 302. The silicone pad 302 can reduce the wear of the arc-shaped fixing block 1 207 and the arc-shaped fixing block 2 208 on the outer surfaces of the solid engine housing 105 and the mounting base 104, and avoid damage to the solid engine housing 105 and the mounting base 104.

[0029] The solid engine housing 105 has multiple grooves inside, and the protrusions 303 engage with the inside of the grooves to prevent the solid engine housing 105 from rotating during welding, thus improving positioning accuracy. The partition plate 305 is made of a high thermal conductivity metal material, preferably copper alloy. Through the partition plate 305, the frictional heat generated by the non-Newtonian fluid 304 and the heat absorbed by the solid engine housing 105 and the mounting base 104 during welding can be quickly transferred to the cooling chamber 408, while the low temperature of the cooling chamber 408 can be transferred to the non-Newtonian fluid 304. 04. To achieve rapid cooling of the non-Newtonian fluid 304 and avoid its vibration damping performance from decreasing due to temperature rise, the non-Newtonian fluid chamber 301 is filled with non-Newtonian fluid 304. The non-Newtonian fluid 304 is a shear-thickening fluid. When subjected to instantaneous vibration impact, it will quickly change from a liquid state to a near-solid state, generating a large shear resistance and consuming vibration energy. When there is no vibration or slow force, it remains in a liquid state, which does not affect the clamping effect of the arc-shaped fixing block 1 207 and the arc-shaped fixing block 2 208, thereby effectively suppressing the transmission of welding vibration.

[0030] A cooling and temperature control assembly 4 is installed on the outer surface of the workbench 1. The cooling and temperature control assembly 4 includes a refrigerator 401 installed symmetrically on the outer surface of the workbench 1. The refrigerator 401 is a compression refrigerator. The refrigerator 401 generates a low-temperature liquid to provide a cold source for the cooling and temperature control assembly 4. Temperature sensor 2 detects the temperature of the low-temperature liquid inside the refrigerator 401 in real time, so that the control module can adjust the operating status of the refrigerator 401 and ensure the temperature of the low-temperature liquid is stable. A cooling chamber 408 is installed inside the arc-shaped fixing block 1 207 and arc-shaped fixing block 2 208 near the partition plate 305. The cooling chamber 408 is filled with coolant. The low-temperature liquid flowing inside the condenser coil 404 continuously cools it and keeps the cooling chamber 408 in a stable low-temperature state.

[0031] Both refrigerators 401 are internally connected to a circulation conveying pipe 402. Multiple connecting pipes 405 are installed on the outer surface of the circulation conveying pipe 402. A condensing coil 404 is installed inside the refrigeration chamber 408. The condensing coil 404 is made of copper. The low-temperature liquid flowing inside the condensing coil 404 absorbs the heat transferred by the partition plate 305, thereby cooling the non-Newtonian fluid 304. At the same time, the low temperature is transferred to the arc-shaped fixing block 1 207 and the arc-shaped fixing block 208 to suppress its thermal expansion. One end of the multiple connecting pipes 405 is connected to the water inlet of the condensing coil 404. A circulation recovery pipe 403 is connected inside the refrigerator 401. Multiple recovery pipes are installed on the outer surface of the circulation recovery pipe 403. One end of the recovery pipes is connected to the water outlet of the condensing coil 404.

[0032] Control valves 406 are installed on the outer surfaces of both the circulating delivery pipe 402 and the circulating recovery pipe 403. These control valves 406 control the flow and interruption of the cryogenic liquid within the circulating delivery pipe 402 and the circulating recovery pipe 403, thereby achieving adaptive adjustment of the cooling intensity. One-way valves 407 are installed on the outer surfaces of both the circulating delivery pipe 402 and the circulating recovery pipe 403, near the control valves 406. These one-way valves 407 prevent backflow of the cryogenic liquid, ensuring that it circulates in the set direction. Multiple support blocks 409 are centrally symmetrically installed on the upper surface of the workbench 1. The circulating delivery pipe 402... Both the circulation and recovery pipe 403 are connected to the interior of the support block 409. The circulation conveying pipe 402, connecting pipe 405, circulation and recovery pipe 403 and recovery pipe are all made of flexible high-temperature resistant soft pipes. While ensuring good thermal conductivity, they also have a certain degree of bending adaptability, which is convenient for assembly and layout and not easy to crack. The electric push rod 209, drive motor 203, hydraulic rod 201, refrigeration unit 401, temperature sensor one, temperature sensor two and control valve 406 are all connected to external 380V industrial AC power. The voltage is converted through the distribution box to provide suitable working voltage for each electrical component.

[0033] During welding, the continuous vibration generated by the welding torch is transmitted to the non-Newtonian fluid chamber 301 through the arc-shaped fixing block 1 207 and the arc-shaped fixing block 208. At this time, the non-Newtonian fluid 304 inside the non-Newtonian fluid chamber 301 is subjected to instantaneous vibration impact, rapidly changing from a liquid state to a near-solid state, generating a large shear resistance, converting the vibration kinetic energy into frictional heat energy, realizing the dissipation of vibration energy, and blocking the transmission of vibration to the solid engine housing 105 and the mounting base 104. Furthermore, the large amount of heat generated during welding will cause the solid engine housing 105, the arc-shaped fixing block 1 207, and the arc-shaped fixing block 208 to become hotter and hotter. As the temperature of block 208 and the non-Newtonian fluid 304 rises, the temperature sensor inside the arc-shaped fixed block monitors the temperature in real time and transmits it to the control module. The control module starts the refrigerator 401, which generates a cryogenic liquid. This liquid is then transported to the condenser coil 404 in the cooling chamber 408 through the circulation pipe 402 and the connecting pipe 405. The partition plate 305 transfers the frictional heat energy of the non-Newtonian fluid 304 and the heat from the arc-shaped fixed block to the condenser coil 404. After absorbing heat, the cryogenic liquid flows back to the refrigerator 401 through the recovery pipe and the circulation recovery pipe 403 for recooling, thus achieving cyclic cooling.

[0034] Working principle: During use, the operator moves the fixture to the designated welding position using the casters 101 at the bottom of the workbench 1, locks the casters 101 to prevent the fixture from shifting, and then places the mounting base 104 stably at the center of the upper surface of the workbench 1 as the reference carrier for welding the solid engine housing 105. Then, by operating the control button 103, the two electric push rods 209 are activated to drive the arc-shaped fixing block 208 to move towards the mounting base 104, so that the arc-shaped fixing block 208 firmly fixes the mounting base 104, preventing the mounting base 104 from shifting during the welding process and affecting the positioning accuracy.

[0035] Next, the solid rocket motor housing 105 is placed on the mounting base 104, and its posture is initially adjusted so that its bottom is in close contact with the mounting base 104, completing the basic preparation before assembly. At the same time, the hydraulic rod 201 is activated by the control button 103 to move the positioning frame 202 downward, so that the two arc-shaped fixing blocks 207 move closer to the center of the solid rocket motor housing 105. Then, the drive motor 203 is activated to drive the bidirectional lead screw 204 to rotate. The bidirectional lead screw 204 drives the two sleeves 206 to move towards each other along the slide rail 205, thereby moving the two arc-shaped fixing blocks 207 closer to the solid rocket motor housing 105, thus clamping the solid rocket motor housing 105. The protrusions 303 on the arc-shaped fixing blocks 207 are engaged in the grooves of the solid rocket motor housing 105, restricting the circumferential rotation of the solid rocket motor housing 105. Finally, the solid rocket motor housing 105 and the mounting base 104 are precisely aligned, ensuring the coaxiality and perpendicularity required for welding.

[0036] During welding operations, the rheological clamping assembly 3 plays a vibration suppression role, preventing the welding torch vibration from causing positioning deviation. During welding, the continuous vibration generated by the welding torch is transmitted to the non-Newtonian fluid chamber 301 through the arc-shaped fixing block 1 207 and the arc-shaped fixing block 208. At this time, the non-Newtonian fluid 304 inside the non-Newtonian fluid chamber 301 is subjected to instantaneous vibration impact, rapidly changing from a liquid state to a near-solid state, generating a large shear resistance, converting the vibration kinetic energy into frictional heat energy, realizing the dissipation of vibration energy, blocking the transmission of vibration to the solid engine housing 105 and the mounting base 104. The silicone pad 302 further plays a buffering role, which, together with the vibration reduction effect of the non-Newtonian fluid 304, ensures that the solid engine housing 105 remains stable during welding and avoids positioning deviation.

[0037] Furthermore, the large amount of heat generated during welding will cause the solid engine housing 105, the arc-shaped fixing block 1 207, the arc-shaped fixing block 2 208, and the non-Newtonian fluid 304 to rise in temperature. At this time, the temperature sensor 1 inside the arc-shaped fixing block detects the temperature in real time and transmits it to the control module. The control module starts the refrigerator 401, which generates cryogenic liquid, which is transported to the condenser coil 404 in the cooling chamber 408 through the circulation delivery pipe 402 and the connecting pipe 405. The partition plate 305 transfers the frictional heat energy of the non-Newtonian fluid 304 and the heat of the arc-shaped fixing block to the condenser coil 404. After absorbing heat, the cryogenic liquid flows back to the refrigerator 401 through the recovery pipe and the circulation recovery pipe 403 for recooling, thus achieving circulating cooling. The control valve 406 adjusts the cryogenic liquid flow rate according to the temperature signal, and the one-way valve 407 prevents liquid backflow, ensuring the stable operation of the cooling system. At the same time, the cryogenic temperature is transferred to the arc-shaped fixing block and the solid engine housing 105 to suppress their thermal expansion.

[0038] After welding is completed, the control module controls the refrigeration unit 401 to continue running for a period of time until the temperatures of the arc-shaped fixing block 1 207, arc-shaped fixing block 208, solid engine housing 105, and non-Newtonian fluid 304 drop to a reasonable range. Immediately, the electric push rod 209 and the drive motor 203 are activated to reverse their actions. The electric push rod 209 moves the arc-shaped fixing block 208 away from the mounting base 104, and the drive motor 203 drives the bidirectional lead screw 204 to rotate in the opposite direction, causing the two arc-shaped fixing blocks 1 207 to move in the opposite direction along the slide rail 205, loosening the clamping on the solid engine housing 105. The protrusion 303 disengages from the groove of the solid engine housing 105. Finally, the hydraulic rod 201 is controlled to move the positioning frame 202 upward, and the operator can then remove the welded solid engine housing 105 together with the mounting base 104, completing the entire assembly and positioning operation.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and not restrictive.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A quick assembly and positioning fixture for outer components of a solid engine casing, characterized in that: The workbench (1) is equipped with a positioning support assembly (2) on its upper surface, a rheological clamping assembly (3) is installed inside the positioning support assembly (2), and a cooling temperature control assembly (4) is installed on the outer surface of the workbench (1). The positioning support assembly (2) includes a pair of connecting plates (210) that are centrally symmetrically connected to the upper surface of the workbench (1). Electric push rods (209) are fixedly connected to the opposite side of the two connecting plates (210). An arc-shaped fixing block (208) is installed at one end of the electric push rod (209). An installation base (104) is placed on the upper surface of the workbench (1). The upper surface of the installation base (104) abuts against a solid engine housing (105). The outer surface of the solid engine housing (105) abuts against two arc-shaped fixing blocks (207). The rheological clamping assembly (3) includes a non-Newtonian fluid chamber (301) installed inside the arc-shaped fixing block one (207) and the arc-shaped fixing block two (208), and a partition plate (305) is fixedly connected inside the non-Newtonian fluid chamber (301). The cooling and temperature control assembly (4) includes a refrigerator (401) that is centrally symmetrically installed on the outer surface of the workbench (1), and a cooling chamber (408) is installed inside the arc-shaped fixing block one (207) and the arc-shaped fixing block two (208) near the partition plate (305).

2. The quick assembly and positioning fixture for the outer components of a solid rocket motor housing according to claim 1, characterized in that: The bottom of the workbench (1) is fixedly connected with multiple casters (101), the outer surface of the workbench (1) is equipped with control buttons (103), the upper surface of the workbench (1) is fixedly connected with a support frame (102), and the lower surface of the support frame (102) is fixedly connected with a hydraulic rod (201).

3. The quick assembly and positioning fixture for the outer components of a solid rocket motor housing according to claim 2, characterized in that: A positioning frame (202) is installed at one end of the hydraulic rod (201). A drive motor (203) is fixedly connected to the inner cavity side wall of the positioning frame (202). A temperature sensor is installed inside the arc-shaped fixing block one (207) and the arc-shaped fixing block two (208). A temperature sensor is installed inside the refrigerator (401).

4. The quick assembly and positioning fixture for the outer components of a solid engine housing according to claim 3, characterized in that: The output shaft of the drive motor (203) is fixedly connected to a bidirectional lead screw (204) via a coupling. The outer surface of the bidirectional lead screw (204) is threaded with two sleeves (206). The sides of the two sleeves (206) are respectively connected to the outer surface of the arc-shaped fixing block (207).

5. The quick assembly and positioning fixture for the outer components of a solid rocket motor housing according to claim 4, characterized in that: The positioning frame (202) is equipped with a slide rail (205), and the outer surfaces of the two sleeves (206) are slidably connected to the inside of the slide rail (205). The other end of the bidirectional lead screw (204) is connected to the inner cavity side wall of the positioning frame (202) through a bearing seat.

6. The quick assembly and positioning fixture for the outer components of a solid rocket motor housing according to claim 1, characterized in that: The outer surfaces of the first arc-shaped fixing block (207) and the second arc-shaped fixing block (208) are both fixedly connected with silicone pads (302). The outer surface of the first arc-shaped fixing block (207) is fixedly connected with a protrusion (303) near the silicone pad (302). The solid engine housing (105) has multiple grooves inside. The protrusion (303) engages with the inside of the groove. The non-Newtonian fluid chamber (301) is filled with non-Newtonian fluid (304). The partition plate (305) is made of a high thermal conductivity metal material.

7. The quick assembly and positioning fixture for the outer components of a solid rocket motor housing according to claim 1, characterized in that: Both of the refrigerators (401) are connected to a circulation conveying pipe (402). Multiple connecting pipes (405) are installed on the outer surface of the circulation conveying pipe (402). A condenser coil (404) is installed inside the refrigeration chamber (408). One end of each of the multiple connecting pipes (405) is connected to the water inlet of the condenser coil (404).

8. The quick assembly and positioning fixture for the outer components of a solid rocket motor housing according to claim 7, characterized in that: The refrigerator (401) is internally connected to a circulation recovery pipe (403), and multiple recovery pipes are installed on the outer surface of the circulation recovery pipe (403). One end of each recovery pipe is connected to the water outlet of the condenser coil (404).

9. A quick assembly and positioning fixture for the outer components of a solid rocket motor housing according to claim 8, characterized in that: Control valves (406) are installed on the outer surfaces of the circulating conveying pipe (402) and the circulating recovery pipe (403), and check valves (407) are installed on the outer surfaces of the circulating conveying pipe (402) and the circulating recovery pipe (403) above the control valves (406).

10. A quick assembly and positioning fixture for an outer component of a solid engine housing according to claim 8, characterized in that: The upper surface of the workbench (1) is centrally symmetrically equipped with multiple support blocks (409), and the circulating conveying pipe (402) and the circulating recovery pipe (403) are both connected to the interior of the support blocks (409).

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