Test rack for solid rocket engine test

Abstract

The utility model discloses a test rack for solid rocket engine test, which comprises a test bench, universal wheels and a fixed cylinder, the inside of the fixed cylinder is rotatably connected with a pressing rod, the pressing rod penetrates through the inside of the fixed cylinder and is fixedly connected with a powerful sucker, and two sides of the upper surface of the test bench are fixedly connected with sliding mechanisms. The test bed is moved to a proper area through the universal wheels, the powerful suction cup is firmly adsorbed to the ground, the clamping plate limits and fixes a test engine by rotating the threaded rod, meanwhile, when a test needs to be carried out, the limiting rod is taken down, a nozzle of the test engine generates hot air flow, and the hot air flow is conveyed to the test bed. Therefore, the test engine can move on the limiting strips, the process ensures that the test engine can be normally subjected to a moving test, and after the test is finished, the whole device can be moved to a proper area according to actual conditions, so that workers can conveniently carry out a series of operations in the test process.

Description

Technical Field

[0001] The utility model relates to the technical field of solid rocket engine test and experiment, in particular to a test stand for solid rocket engine experiments. Background Technique

[0002] A solid rocket engine refers to a chemical rocket engine that uses solid propellant, also known as a solid propellant rocket engine. After the solid propellant is ignited, it burns in the combustion chamber, converting chemical energy into heat energy to produce high-temperature and high-pressure combustion products. The combustion products flow through the nozzle, expand and accelerate in it, converting heat energy into kinetic energy, and are discharged from the nozzle at high speed to generate thrust. Before a solid rocket engine is used, relevant detection tests need to be carried out. During the flight of the engine with the missile, it is in an unconstrained or weakly constrained environment and is approximately an elastic body. During the normal ground test run process, etc., it can be used normally.

[0003] Existing test benches can apply axial and lateral vibration excitations to the engine under the condition that the engine is not ignited, but their reliability is relatively low, unable to withstand the vibration force and impact force generated during the engine test run, and cannot be used in ignition test runs. The traditional test bench uses a flexible rod as the dynamic frame constraint, which reduces the overall response ability of the test stand to the engine, resulting in distortion of the excitation value;

[0004] Existing patent (Publication No.: CN214366427U), a solid rocket engine elastic weak constraint test stand, includes a ground guide rail, a fixed frame, a moving frame, a test engine and an adjustment device. The ground guide rail is fixed on a concrete base, and the ground guide rail is connected through the bottom frame of the fixed frame to fix the bottom frame. The support flat plate of the fixed frame is connected to the connection bottom plate of the adjustment device. The sliding plate bearing of the adjustment device supports the test engine, and the limit frame limits the test engine. The connection disk of the moving frame is connected to the test engine, and the test engine is tested through the sensors arranged in the device. The mutual interference between the constraints of this device is small, and the measurement accuracy is improved. Under the action of the constraints, the test stand has a relatively high natural frequency, ensuring the stability of the dynamic characteristics of the engine during operation.

[0005] In view of the above problems, the existing patent gives a solution. However, when it is used, due to the large size of the test engine, during the test process, it needs to be limited and fixed to ensure that it can move and be tested normally. And after the test, it needs to be transported to a suitable area. The existing test stand cannot move the entire device according to the actual situation, resulting in inconvenience during use.

[0006] Therefore, a test stand for solid rocket engine experiments is proposed. Summary of the Invention

[0007] The purpose of the present utility model is to provide a test stand for solid rocket engine tests, which can solve the problem that due to the large size of the entire test engine, during the test process, it is necessary to limit and fix it to ensure that it can move and be tested normally. And after the test, it needs to be transported to a suitable area. The existing test stands cannot move the entire device according to the actual situation, resulting in inconvenience during use.

[0008] To achieve the above purpose, the present utility model provides the following technical solutions: A test stand for solid rocket engine tests, including a test bench, both sides of the bottom of the test bench are fixedly connected with a plurality of universal wheels, both sides of the upper surface of the test bench are fixedly connected with a plurality of fixed cylinders, the inside of each fixed cylinder is rotatably connected with a pressing rod, and the pressing rods all penetrate through the inside of the fixed cylinders and are fixedly connected with powerful suction cups. Both sides of the upper surface of the test bench are fixedly connected with sliding mechanisms;

[0009] The sliding mechanism includes limit frames fixedly connected to both sides of the upper surface of the test bench. A plurality of limit holes are provided on both outer surfaces of the limit frames. Limit bars are fixedly connected inside the limit frames. The outer surfaces of the limit bars are fixedly connected with sliding sleeves through limit rods penetrating through the limit holes. The sliding sleeves are fixedly connected with a placement table through support blocks. A clamping mechanism is fixedly connected to the upper surface of the placement table. The clamping mechanism includes clamping plates fixedly connected to the upper surface of the placement table. The inner walls of the clamping plates are fixedly connected with a test engine, and a nozzle is fixedly arranged at the tail end of the test engine.

[0010] Preferably, both sides of the upper surface of the placement table are fixedly connected with support plates, the tops of the support plates are fixedly connected with arc-shaped support platforms, and shock pads are fixedly connected to both sides of the upper surface of the arc-shaped support platforms.

[0011] Preferably, the clamping mechanism further includes a fixed frame fixedly connected to the upper surface of the placement table. A double-shaft motor is fixedly connected to the middle of the inside of the fixed frame, and screw rods are fixedly connected to the output ends of the double-shaft motor.

[0012] Preferably, one end of the outer circumferential surface of each screw rod is rotatably connected with a threaded sleeve, the tops of the outer circumferential surfaces of the threaded sleeves are fixedly connected with connecting plates, and the connecting plates penetrate through the sliding grooves of the fixed frame and are fixedly connected with limit cylinders.

[0013] Preferably, threaded rods are rotatably connected inside the limit cylinders, and the threaded rods penetrate through the inside of the limit cylinders and are fixedly connected with clamping plates.

[0014] Preferably, a support mechanism is fixedly connected to the middle of the outer circular surface of the test engine. The support mechanism includes a first circular ring groove and a second circular ring groove fixedly connected to the middle of the outer circular surface of the test engine. The first circular ring groove and the second circular ring groove are respectively fixedly connected to the upper surface of the test bench through a first fixing plate and a second fixing plate.

[0015] Preferably, a rotating mechanism is fixedly connected to one side of the upper surface of the test bench. The rotating mechanism includes a base fixedly connected to one side of the upper surface of the test bench. A servo motor is fixedly connected to the top of the base. The output end of the servo motor is fixedly connected to a driving rod. The driving rod is meshed with a driven gear through a main gear.

[0016] Preferably, the driven gear is fixedly sleeved on the middle of the outer circular surface of the test engine. A plurality of clamping strips are arranged around the inside of the driven gear. Both ends of each clamping strip are fixedly connected with a clamping block. The clamping blocks are respectively clamped inside the first circular ring groove and the second circular ring groove.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] 1. In this application, by providing a test bench, universal wheels, and a sliding mechanism, the test bench is moved to a suitable area by using the universal wheels, and the powerful suction cups are firmly adsorbed on the ground. Then, by rotating the threaded rod, the clamping plate is used to limit and fix the test engine. At the same time, when the test needs to be carried out, the limiting rod is removed, and the nozzle of the test engine generates hot air flow, so that the test engine moves on the limiting strip. This process ensures that the test engine can normally carry out mobile tests. And after the test is completed, the whole device can be moved to a suitable area according to the actual situation, which is convenient for the staff to carry out a series of operations during the test.

[0019] 2. In this application, by providing a support mechanism and a rotating mechanism, before the test, relevant inspections need to be carried out on the test engine. At this time, by starting the servo motor, the driving rod drives the main gear to rotate, so that the meshed driven gear rotates synchronously, and the clamping blocks rotate inside the first circular ring groove and the second circular ring groove, thereby enabling the whole test engine to rotate 360 degrees, which is convenient for the test personnel to carry out relevant inspections on the top of the test engine, effectively improving the detection efficiency and ensuring the normal progress of the whole test. Description of the Drawings

[0020] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is the overall structure view of the present utility model;

[0022] Figure 2 is Figure 1 the partial structure schematic diagram;

[0023] Figure 3 It is the connection schematic diagram of the clamping mechanism of the present utility model;

[0024] Figure 4 It is the connection schematic diagram of the rotating mechanism of the present utility model.

[0025] Explanation of reference numerals:

[0026] 1. Test bench; 2. Universal wheel; 3. Fixed cylinder; 4. Pressing rod; 5. Strong suction cup; 6. Sliding mechanism; 61. Limiting frame; 62. Limiting hole; 63. Limiting strip; 64. Limiting rod; 65. Sliding sleeve; 66. Support block; 7. Placing table; 8. Support plate; 9. Arc-shaped support table; 10. Clamping mechanism; 101. Fixed frame; 102. Biaxial motor; 103. Lead screw; 104. Threaded sleeve; 105. Connecting plate; 106. Limiting cylinder; 107. Threaded rod; 108. Clamping plate; 11. Test engine; 12. Nozzle; 13. Support mechanism; 131. First fixing plate; 132. First circular ring groove; 133. Second fixing plate; 134. Second circular ring groove; 14. Rotating mechanism; 141. Base; 142. Servo motor; 143. Driving rod; 144. Main gear; 145. Driven gear; 146. Block. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0028] Please refer to Figures 1 to 4 , the present utility model provides a technical solution:

[0029] A test stand for a solid rocket engine test, including a test bench 1. On both sides of the bottom of the test bench 1, a plurality of universal wheels 2 are fixedly connected. On both sides of the upper surface of the test bench 1, a plurality of fixed cylinders 3 are fixedly connected. Inside each fixed cylinder 3, a pressing rod 4 is rotatably connected. The pressing rods 4 all penetrate through the inside of the fixed cylinders 3 and are fixedly connected with strong suction cups 5. On both sides of the upper surface of the test bench 1, a sliding mechanism 6 is fixedly connected;

[0030] The sliding mechanism 6 includes limit frames 61 fixedly connected to both sides of the upper surface of the test bench 1. On both sides of the outer surface of the limit frames 61, a plurality of limit holes 62 are provided. Inside each limit frame 61, a limit strip 63 is fixedly connected. The outer surface of the limit strip 63 is fixedly connected with a sliding sleeve 65 through a limit rod 64 penetrating through the limit holes 62. The sliding sleeve 65 is fixedly connected with a placement table 7 through a support block 66. On the upper surface of the placement table 7, a clamping mechanism 10 is fixedly connected. The clamping mechanism 10 includes a clamping plate 108 fixedly connected to the upper surface of the placement table 7. Inside the inner wall of the clamping plate 108, a test engine 11 is fixedly connected. At the tail end of the test engine 11, a nozzle 12 is fixedly provided.

[0031] Specifically, as Figure 1 shown, on both sides of the upper surface of the placement table 7, support plates 8 are fixedly connected. At the top ends of the support plates 8, arc-shaped support platforms 9 are fixedly connected. On both sides of the upper surface of the arc-shaped support platforms 9, shock pads are fixedly connected.

[0032] Specifically, as Figure 1 、 Figure 3 shown, the clamping mechanism 10 further includes a fixed frame 101 fixedly connected to the upper surface of the placement table 7. In the middle of the inside of the fixed frame 101, a dual-axis motor 102 is fixedly connected. To the output ends of the dual-axis motor 102, lead screws 103 are fixedly connected.

[0033] Specifically, as Figure 1 、 Figure 3 shown, at one end of the outer cylindrical surface of each lead screw 103, a threaded sleeve 104 is rotatably connected. At the top end of the outer cylindrical surface of each threaded sleeve 104, a connecting plate 105 is fixedly connected. The connecting plate 105 penetrates through the sliding groove of the fixed frame 101 and is fixedly connected with a limit cylinder 106.

[0034] Specifically, as Figure 1 、 Figure 3 shown, inside each limit cylinder 106, a threaded rod 107 is rotatably connected. The threaded rod 107 penetrates through the inside of the limit cylinder 106 and is fixedly connected with a clamping plate 108.

[0035] Using the universal wheels 2, move the test bench 1 to a suitable area, and rotate the pressing rod 4 so that it rotates in the fixed cylinder 3, thereby enabling the powerful suction cup 5 to firmly adsorb on the ground and fix the entire test bench 1. Then, according to the actual size of the test engine 11, move the placement table 7 so that the support block 66 drives the sliding sleeve 65 to move on the limit strip 63, and at the same time, the support plate 8 drives the arc-shaped support table 9 to move synchronously. Then, place the test engine 11 on the arc-shaped support table 9, and start the double-shaft motor 102 to make the lead screw 103 rotate, so that the threaded sleeve 104 moves on its outer cylindrical surface, and the connecting plate 105 drives the limit cylinder 106 to move synchronously. When it moves to a suitable position, rotate the threaded rod 107 to make the clamping plate 108 limit and fix the test engine 11. At the same time, when the test needs to be carried out, remove the limit rod 64, and the nozzle 12 of the test engine 11 generates hot air flow, so that the test engine 11 moves on the limit strip 63. This process ensures that the test engine 11 can perform normal movement tests, and after the test is completed, the entire device can be moved to a suitable area according to the actual situation, which is convenient for the staff to perform a series of operations during the test.

[0036] Specifically, as Figure 1 、 Figure 4 shown, a support mechanism 13 is fixedly connected to the middle of the outer cylindrical surface of the test engine 11. The support mechanism 13 includes a first circular ring groove 132 and a second circular ring groove 134 fixedly connected to the middle of the outer cylindrical surface of the test engine 11. The first circular ring groove 132 and the second circular ring groove 134 are respectively fixedly connected to the upper surface of the test bench 1 through a first fixing plate 131 and a second fixing plate 133.

[0037] Specifically, as Figure 1 、 Figure 4 shown, a rotating mechanism 14 is fixedly connected to one side of the upper surface of the test bench 1. The rotating mechanism 14 includes a base 141 fixedly connected to one side of the upper surface of the test bench 1. A servo motor 142 is fixedly connected to the top of the base 141. The output end of the servo motor 142 is fixedly connected to a driving rod 143. The driving rod 143 is meshed and connected with a driven gear 145 through a main gear 144.

[0038] Specifically, as Figure 1 、 Figure 4 shown, the driven gear 145 is fixedly sleeved on the middle of the outer cylindrical surface of the test engine 11. A plurality of clamping strips are arranged around the inside of the driven gear 145. Both ends of the clamping strips are fixedly connected with clamping blocks 146. The clamping blocks 146 are all clamped inside the first circular ring groove 132 and the second circular ring groove 134.

[0039] Before conducting the test, relevant inspections need to be carried out on the test engine 11. At this time, the test engine 11 is sleeved inside the first annular groove 132 and the second annular groove 134. Meanwhile, the driven gear 145 is fixedly sleeved on the outer circular surface of the test engine 11. At this time, the servo motor 142 can be started, so that the driving rod 143 drives the main gear 144 to rotate, thereby enabling the meshing driven gear 145 to rotate synchronously, and enabling the block 146 to rotate inside the first annular groove 132 and the second annular groove 134, and further enabling the entire test engine 11 to rotate 360 degrees, which facilitates the relevant inspections of the top of the test engine 11 by the test personnel, effectively improving the detection efficiency and ensuring the normal progress of the entire test.

[0040] By adopting the above technical solution, the problem is solved that due to the large size of the entire test engine 11, during the test process, it is necessary to limit and fix it to ensure its normal movement test, and after the test, it needs to be transported to a suitable area. The existing test stand cannot move the entire device according to the actual situation, resulting in inconvenience during use.

[0041] Working principle: When this application is in use, before conducting the test, relevant inspections need to be carried out on the test engine 11. At this time, the test engine 11 is sleeved inside the first annular groove 132 and the second annular groove 134. Meanwhile, the driven gear 145 is fixedly sleeved on the outer circular surface of the test engine 11. At this time, the servo motor 142 can be started, so that the driving rod 143 drives the main gear 144 to rotate, thereby enabling the meshing driven gear 145 to rotate synchronously, and enabling the block 146 to rotate inside the first annular groove 132 and the second annular groove 134, and further enabling the entire test engine 11 to rotate 360 degrees, which facilitates the relevant inspections of the top of the test engine 11 by the test personnel. At the same time, according to the actual size of the test engine 11, the test engine 11 is limited and fixed by the clamping plate 108. And when the test needs to be carried out, the limiting rod 64 is removed, and the nozzle 12 of the test engine 11 generates hot air flow, so that the test engine 11 moves on the limiting strip 63. This process ensures that the test engine 11 can carry out normal movement tests.

[0042] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A test stand for solid rocket engine tests, comprising a test bench (1), characterized in that: On both sides of the bottom of the test bench (1), a plurality of universal wheels (2) are fixedly connected. On both sides of the upper surface of the test bench (1), a plurality of fixed cylinders (3) are fixedly connected. Inside each of the fixed cylinders (3), a pressing rod (4) is rotatably connected. The pressing rods (4) all penetrate through the inside of the fixed cylinders (3) and are fixedly connected with powerful suction cups (5). On both sides of the upper surface of the test bench (1), a sliding mechanism (6) is fixedly connected. The sliding mechanism (6) includes limit frames (61) fixedly connected to both sides of the upper surface of the test bench (1). A plurality of limit holes (62) are provided on both outer surfaces of the limit frames (61). Inside each of the limit frames (61), a limit strip (63) is fixedly connected. The outer surface of the limit strip (63) is fixedly connected with a sliding sleeve (65) through a limit rod (64) penetrating through the limit holes (62). The sliding sleeve (65) is fixedly connected with a placement table (7) through a support block (66). On the upper surface of the placement table (7), a clamping mechanism (10) is fixedly connected. The clamping mechanism (10) includes a clamping plate (108) fixedly connected to the upper surface of the placement table (7). Inside the inner wall of the clamping plate (108), a test engine (11) is fixedly connected. At the tail end of the test engine (11), a nozzle (12) is fixedly provided.

2. The test stand for a solid rocket motor test according to claim 1, characterized in that: On both sides of the upper surface of the placement table (7), support plates (8) are fixedly connected. At the top ends of the support plates (8), arc-shaped support platforms (9) are fixedly connected. On both sides of the upper surface of the arc-shaped support platforms (9), shock pads are fixedly connected.

3. The test stand for a solid rocket motor test according to claim 1, characterized in that: The clamping mechanism (10) further includes a fixed frame (101) fixedly connected to the upper surface of the placement table (7). In the middle of the inside of the fixed frame (101), a double-shaft motor (102) is fixedly connected. Output ends of the double-shaft motor (102) are fixedly connected with lead screws (103).

4. The test stand for a solid rocket motor test according to claim 3, characterized in that: One end of the outer cylindrical surface of each of the lead screws (103) is rotatably connected with a threaded sleeve (104). At the top ends of the outer cylindrical surfaces of the threaded sleeves (104), connecting plates (105) are fixedly connected. The connecting plates (105) penetrate through a sliding groove of the fixed frame (101) and are fixedly connected with limit cylinders (106).

5. The test stand for a solid rocket motor test according to claim 4, characterized in that: Inside each of the limit cylinders (106), a threaded rod (107) is rotatably connected. The threaded rod (107) penetrates through the inside of the limit cylinder (106) and is fixedly connected with a clamping plate (108).

6. The test stand for a solid rocket motor test according to claim 1, characterized in that: In the middle of the outer cylindrical surface of the test engine (11), a support mechanism (13) is fixedly connected. The support mechanism (13) includes a first circular ring groove (132) and a second circular ring groove (134) fixedly connected to the middle of the outer cylindrical surface of the test engine (11). The first circular ring groove (132) and the second circular ring groove (134) are respectively fixedly connected to the upper surface of the test bench (1) through a first fixing plate (131) and a second fixing plate (133).

7. The test stand for a solid rocket motor test according to claim 6, characterized in that: On one side of the upper surface of the test bench (1), a rotating mechanism (14) is fixedly connected. The rotating mechanism (14) includes a base (141) fixedly connected to one side of the upper surface of the test bench (1). At the top of the base (141), a servo motor (142) is fixedly connected. The output end of the servo motor (142) is fixedly connected to a driving rod (143). The driving rod (143) is meshed with a driven gear (145) through a main gear (144).

8. A test stand for a solid rocket engine test according to claim 7, characterized in that: The driven gear (145) is fixedly sleeved at the middle of the outer circular surface of the test engine (11). A plurality of clamping strips are arranged around the inside of the driven gear (145). Both ends of the clamping strips are fixedly connected with clamping blocks (146). The clamping blocks (146) are respectively clamped inside the first circular ring groove (132) and the second circular ring groove (134).

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