A gas generator head clamping fixture and its usage method

Abstract

This invention relates to a gas generator head clamping fixture and its usage method; it solves the technical problems of existing gas generator head clamping devices, such as complex installation, poor stability, and the fixture and product being separate parts requiring extensive manual intervention for transfer, resulting in low transfer efficiency. The fixture includes a main support, a fixed support, a lower locking assembly, and an upper clamping assembly; a water return hole is provided in the middle of the main support; the fixed support includes a fixed plate and two support frames; the fixed plate is mounted on the main support, and a first through hole is provided in the middle of the fixed plate; the lower locking assembly includes a first lower locking member and a second lower locking member; the upper clamping assembly includes a first upper clamping member and a second upper clamping member respectively mounted on the two support frames, with the first upper clamping member and the second upper clamping member close to each other at one end to clamp the upper end of the gas generator head. This invention also proposes a method for using the above fixture.

Description

Technical Field

[0001] This invention relates to a gas generator head clamping fixture and its usage method. Background Technology

[0002] The gas generator is a structure in a high-pressure staged combustion liquid rocket engine responsible for generating oxygen-rich gas to supply oxidizer to the thrust chamber. During the development stage of the gas generator, it is necessary to study the flow resistance characteristics of its head. Moreover, as an important component, the gas generator also needs to undergo flow resistance characteristic research and testing. During the test, the gas generator needs to be circulated with a large flow rate of medium. Therefore, reliable clamping and fixing of the gas generator head is an important part of the flow resistance test.

[0003] The existing gas generator head clamping device is complicated to install and has poor stability. The tooling and the product are two separate parts, requiring a lot of manual intervention during the transfer process, resulting in low transfer efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problems of existing gas generator head clamping devices, such as complex installation, poor stability, tooling and product being divided into two parts, requiring a large amount of manual intervention for transportation, and low transportation efficiency. Therefore, this invention proposes a gas generator head clamping tool and its usage method.

[0005] The technical solution adopted in this invention is:

[0006] A gas generator head clamping fixture, characterized by:

[0007] Includes a main support frame, a fixed support frame, a lower locking assembly, and an upper clamping assembly;

[0008] A water return hole is provided in the middle of the main support frame;

[0009] The fixed bracket includes a fixed plate and two support frames installed at either opposite end of the fixed plate;

[0010] The fixing plate is installed on the main support, and a first through hole communicating with the water return hole of the main support is provided in the middle of the fixing plate.

[0011] The lower locking assembly includes a first lower locking member and a second lower locking member respectively installed on the remaining opposite sides of the fixed plate. The first lower locking member and the second lower locking member are close to each other at one end to lock the lower end of the gas generator head.

[0012] The upper clamping assembly includes a first upper clamping member and a second upper clamping member respectively installed on two support frames. The first upper clamping member and the second upper clamping member are close to each other at one end to clamp the upper end of the gas generator head.

[0013] Furthermore, the first lower locking member includes a locking plate and at least two locking screws. One end of the locking plate is provided with a semi-circular notch that matches the size of the lower end of the gas generator head, and the other end is provided with at least two locking slots. The major axis of the locking slots is set in the same direction as the arrangement of the first lower locking member and the second lower locking member. One end of the locking screw passes through the locking slot and is connected to the fixing plate.

[0014] The second lower locking member has the same structure as the first lower locking member, and clamps the lower end of the gas generator head through two semi-circular notches.

[0015] Furthermore, the lower locking assembly also includes two fasteners respectively disposed on both sides of the semi-circular notch of the locking plate for connecting the two locking plates;

[0016] The fastener includes a screw, a nut, and two mounting brackets. The two mounting brackets are respectively installed on two locking plates at corresponding positions. One end of the screw is installed on one of the mounting brackets of one locking plate, and the other end passes through the corresponding mounting bracket of the other locking plate and is connected to the nut.

[0017] Furthermore, the first upper clamping member includes a clamping plate and at least two clamping screws. One end of the clamping plate has an arc-shaped notch structure, and the other end of the clamping plate is provided with at least two clamping strip grooves. The major axis of the clamping strip grooves is set in the same direction as the arrangement direction of the first upper clamping member and the second upper clamping member. One end of the clamping screw passes through the clamping strip groove and is connected to the support frame.

[0018] The second upper clamping member has the same structure as the first upper clamping member, and clamps the upper end of the gas generator head through two arc-shaped notches.

[0019] Furthermore, the lower locking assembly also includes two locking protection members respectively disposed at the semi-circular notches of the first lower locking member and the second lower locking member;

[0020] The locking protection component includes a protective rubber and two protective plates with an L-shaped cross-section that match the shape of the semi-circular notch of the locking plate. The two protective plates are respectively installed opposite each other on the upper and lower sides of the semi-circular notch of the locking plate. The protective rubber is set inside the semi-circular notch of the locking plate and located between the two protective plates. The upper and lower ends of the protective rubber are provided with two grooves that are adapted to the shape of the protective plates. The bent ends of the two protective plates are respectively embedded in the corresponding grooves.

[0021] Furthermore, the upper clamping assembly also includes two clamping protection components respectively disposed at the arc-shaped notches of the first upper clamping component and the second upper clamping component;

[0022] The structure of the clamping protective component is the same as that of the locking protective component. The two protective plates are respectively installed on the upper and lower sides of the clamping plate. The protective rubber is set in the arc-shaped notch of the clamping plate and located between the two protective plates.

[0023] Furthermore, the main support includes a first base plate, a second base plate, two L-shaped base plates, two sets of columns respectively installed at the lower end of the horizontal plate of the L-shaped base plate, and two connecting plates for connecting each set of columns into one unit.

[0024] The two ends of the second substrate overlap the horizontal plates of the two L-shaped substrates, and the end faces of the two ends of the second substrate are respectively connected to the vertical plates of the two L-shaped substrates by screws.

[0025] The first substrate is disposed on the upper surface of the second substrate and is connected to the first substrate by screws; the return water hole is disposed in the middle of the first substrate;

[0026] The second substrate has a second through hole in the middle that communicates with the water return hole.

[0027] Furthermore, both the locking plate and the pressing plate are provided with weight-reducing grooves.

[0028] Furthermore, lifting lugs are provided on both sides of the upper surface of the first substrate.

[0029] The present invention also proposes a method for using the above-mentioned gas generator head clamping fixture, which is characterized by including the following steps:

[0030] Step 1: Install the fixing bracket on the main bracket;

[0031] Step 2: Install the first lower locking piece and the second lower locking piece on the fixing plate of the fixed bracket, and install the first upper pressing piece and the second upper pressing piece on the support frame of the fixed bracket;

[0032] Step 3: Adjust the stroke of the first lower locking member, the second lower locking member, the first upper pressing member, and the second upper pressing member to the end. Place the gas generator head between the first lower locking member and the second lower locking member, and adjust the position of the first lower locking member and the second lower locking member to lock the lower end of the gas generator head. At the same time, adjust the position of the first upper pressing member and the second upper pressing member to press the upper end of the gas generator head, thus completing the clamping of the gas generator head.

[0033] The beneficial effects of this invention are:

[0034] 1. In this invention, the main support frame provides support for the entire tooling, improving stability. By fixing the upper and lower positions of the support frame, the lower locking component and the upper pressing component are supported, allowing the lower locking component and the upper pressing component to be misaligned. Under the cross-shaped pressing and locking structure, the clamping stability is stronger. Furthermore, the integrated connection of the entire tooling facilitates transportation, has high transportation efficiency, and reduces manpower.

[0035] 2. In this invention, the first lower locking member and the second lower locking member with clamp structure are simple in structure and easy to operate. Furthermore, the locking strip groove and locking screw facilitate the adjustment of the stroke of the first lower locking member and the second lower locking member, so that the gas generator head clamping fixture can clamp gas generator heads of different sizes, thereby improving the practicality and applicability of the device.

[0036] 3. In this invention, by setting a fixing component, after the two locking plates are locked by locking screws, the screw and nut are locked, which further enhances the stability of the lower end of the gas generator head clamping.

[0037] 4. In this invention, the main support structure is designed with two features: first, the support column is integrated with the connecting plate at the end away from the L-shaped base plate; second, the first base plate, the second base plate and the L-shaped base plate are connected by horizontal and vertical screws to ensure the stability and strength of the main support. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the gas generator head clamping tool of the present invention;

[0039] Figure 2 This is an exploded structural diagram of an embodiment of the gas generator head clamping tool of the present invention;

[0040] Figure 3 This is a schematic diagram of the lower locking assembly structure (without locking screws) in an embodiment of the gas generator head clamping fixture of the present invention.

[0041] Figure 4 This is a schematic diagram of the main support structure in an embodiment of the gas generator head clamping fixture of the present invention;

[0042] Figure 5 This is a schematic diagram of the fixed bracket structure in an embodiment of the gas generator head clamping fixture of the present invention;

[0043] Figure 6 This is a schematic diagram of the first lower locking component (without locking screws) in an embodiment of the gas generator head clamping fixture of the present invention.

[0044] Figure 7This is a schematic diagram of the structure of the first upper clamping member (without clamping screws) in an embodiment of the gas generator head clamping fixture of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] 1. Gas generator head; 2. Main support; 3. Fixed support; 4. Lower locking assembly; 5. Upper clamping assembly; 6. Column; 7. First base plate; 8. Lifting lug; 9. Fixing plate; 10. Support frame; 11. Locking plate; 12. Protective rubber; 13. Protective plate; 14. Screw; 15. Mounting bracket; 16. Clamping plate; 17. L-shaped base plate; 18. Connecting plate; 19. Second base plate; 20. Locking screw; 21. Water return hole; 22. Nut; 23. Clamping screw; 24. First through hole. Detailed Implementation

[0047] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0048] This invention proposes a gas generator head clamping fixture, such as... Figure 1 and Figure 2 As shown, it includes a main support 2, a fixed support 3, a lower locking assembly 4, and an upper pressing assembly 5;

[0049] The functions of each component are as follows:

[0050] The main support 2 serves as the base for the entire clamping fixture, providing support for the entire clamping fixture. The fixed support 3 provides support for the lower locking assembly 4 and the upper pressing assembly 5, and makes the lower locking assembly 4 and the upper pressing assembly 5 form a cross structure. The lower locking assembly 4 is used to lock the lower end of the gas generator head 1, and the upper pressing assembly 5 is used to press the upper end of the gas generator head 1.

[0051] The composition and connection methods of each component are as follows:

[0052] like Figure 4 and Figure 6 As shown, the main support 2 serves as the mechanical body of the tooling. The bottom adopts a portal structure and uses rectangular square steel and plate reinforcement to ensure its mechanical properties. Through a unique structural design, its strength is guaranteed.

[0053] Specifically: The main support 2 includes a first base plate 7, a second base plate 19, two L-shaped base plates 17, two sets of column groups corresponding to the two L-shaped base plates 17, and two connecting plates 18 corresponding to the column groups; each set of column groups contains two columns 6, and the L-shaped base plate 17 includes a horizontal plate and a vertical plate that are perpendicularly connected to each other.

[0054] Two columns 6 are connected to the lower surface of the horizontal plate of each L-shaped substrate 17, and the two columns 6 are distributed on both sides of the lower end of the horizontal plate. The connecting plate 18 connects the corresponding two columns 6 into one piece. The two ends of the second substrate 19 overlap the upper surface of the horizontal plate of the two L-shaped substrates 17. The two vertical plates are provided with waist-shaped through slots. One end of multiple screws passes horizontally through the waist-shaped through slots and is threaded to the second substrate 19 to lock and fix the second substrate 19 in the horizontal direction. The first substrate 7 overlaps the upper surface of the second substrate 19. Multiple fixing screws are threaded to the first substrate 7, the second substrate 19 and the horizontal plate from top to bottom to complete the fixation of the first substrate 7 and the second substrate 19. The upper surface of the first substrate 7 is symmetrically provided with lifting lugs 8 on both sides for easy and stable hoisting. The first substrate 7 is provided with a water return hole 21 in the middle. The second substrate 19 is provided with a second through hole communicating with the water return hole 21.

[0055] like Figure 5 As shown, the fixed bracket 3 adopts a gate-shaped structure on both sides. The main structure adopts a rectangular square steel and plate reinforcement structure to ensure its mechanical performance. The lower end face is used for the mechanical support of the lower locking component 4, and the higher end face is used for the mechanical support of the upper pressing component 5.

[0056] Specifically, the fixed bracket 3 includes a fixed plate 9 and two portal-shaped support frames 10. The fixed plate 9 has a U-shaped structure (i.e., the fixed plate 9 has a first through hole 24 in the middle). The fixed plate 9 is installed in the middle of the upper surface of the first base plate 7. The first through hole 24 is connected to the return water hole 21. The two portal-shaped support frames 10 are respectively installed on any opposite sides of the fixed plate 9.

[0057] like Figure 3 and Figure 6 As shown, the lower locking assembly 4 adopts a plate rib structure, and the far end is designed with a waist-shaped locking groove to cooperate with the fixing plate 9 for stroke adjustment. Its near end is designed to cooperate with the bottom periphery of the gas generator head 1. It adopts a T-shaped rubber structure design for end face protection, and a fixing part is designed on its upper surface for further locking of the lower locking assembly 4 and the gas generator head 1.

[0058] Specifically: the lower locking assembly 4 includes a first lower locking member, a second lower locking member, two fixing members, and two locking protection members;

[0059] The second lower locking component has the same structure as the first lower locking component, both including a locking plate 11 and two locking screws 20, and the fixing components include a screw 14, a nut 22 and two mounting brackets 15; the locking protection components include protective rubber 12 and two protective plates 13.

[0060] Two locking plates 11 are arranged opposite each other on the same horizontal plane. Each locking plate 11 has a semi-circular notch on its side closest to the other, the size of which matches the lower end size of the gas generator head 1. Both ends of the two locking plates 11 on their opposite sides have locking grooves. One end of each of the two locking screws 20 passes through the locking groove and connects to the fixing plate 9. The locking grooves can move along the locking screws 20, in the same direction as the arrangement of the second and first lower locking components. The movement of the locking grooves controls the two locking plates 11 to move closer or further apart, and the locking plates 11 are fixed or loosened by screwing in and out the locking screws 20. U-shaped mounting brackets 15 are installed at both ends of each locking plate 11 in the same direction, located at the two locking plates respectively. On the clamping plate 11, among the two U-shaped mounting brackets 15 that are close to each other, one of them is equipped with one end of a screw 14. The other end of the screw 14 passes through the corresponding U-shaped mounting bracket 15 and is equipped with a nut 22. By screwing in and out of the nut 22, the two clamping plates 11 are tightened and loosened. The protective plate 13 has an L-shaped cross section that matches the shape of the semi-circular notch of the clamping plate 11. The two protective plates 13 are respectively installed on the upper and lower sides of the semi-circular notch of the clamping plate 11. The protective rubber 12 is set in the semi-circular notch of the clamping plate 11 and is located between the two protective plates 13. The upper and lower ends of the protective rubber 12 are provided with two grooves that are adapted to the shape of the protective plate 13. The bent ends of the two protective plates 13 are respectively embedded in the corresponding grooves to fix the protective rubber 12.

[0061] To better achieve the function of fixing and clamping, the area where the protective rubber 12 contacts the gas generator head 1 is a plane.

[0062] like Figure 2 and Figure 7 As shown, the upper clamping assembly 5 adopts a plate-rib structure, with a waist-shaped groove designed on the outside to cooperate with the portal support frame 10 for stroke adjustment. The contact surface with the gas generator head 1 adopts a T-shaped rubber structure design for end face protection. Specifically:

[0063] The upper clamping assembly 5 includes a first upper clamping component, a second upper clamping component, and a clamping protection component. The first upper clamping component and the second upper clamping component have the same structure, both including a clamping plate 16 and two clamping screws 23. The clamping protection component includes a protective rubber 12 and two protective plates 13.

[0064] One end of the clamping plate 16 has a recessed arc-shaped notch, and the other end of the clamping plate 16 has two clamping grooves arranged side by side along a direction perpendicular to the arrangement of the two clamping plates 16. The long axis direction of the clamping grooves is the same as the arrangement direction of the first upper clamping member and the second upper clamping member. One end of the clamping screw 23 passes through the clamping groove and is connected to the support frame 10. The clamping groove can move along the clamping screw 23 in the same direction as the arrangement direction of the first upper clamping member and the second upper clamping member. By moving the clamping groove, the two clamping plates 16 are controlled to move closer or further apart. The clamping screw 23 is rotated to control the movement of the clamping grooves. The clamping plate 16 is tightened and loosened by rotating it in and out. The protective plate 13 has an L-shaped cross section that matches the arc-shaped notch of the clamping plate 16. The two protective plates 13 are respectively installed on the upper and lower sides of the arc-shaped notch of the clamping plate 16. The protective rubber 12 is set in the arc-shaped notch of the clamping plate 16 and is located between the two protective plates 13. The upper and lower ends of the protective rubber 12 are provided with two grooves that are adapted to the shape of the protective plate 13. The bent ends of the two protective plates 13 are respectively embedded in the corresponding grooves to fix the protective rubber 12. The end of the protective rubber 12 that contacts the upper end of the gas generator head 1 is semi-circular.

[0065] To reduce weight, both the locking plate 11 and the pressing plate 16 are provided with weight-reducing grooves.

[0066] The working principle of this invention is as follows:

[0067] Adjust the stroke of the two locking plates 11 and the two pressing plates 16 to the end, place the gas generator head 1 on the first base plate 7 and between the two locking plates 11, bring the locking plates 11 closer to each other until the protective rubber 12 abuts against the gas generator head 1, the screw 14 passes through the corresponding position of the U-shaped mounting bracket 15, tighten the locking screw 20, tighten the nut 22, and complete the locking and fixing of the lower end of the gas generator head 1;

[0068] Push the clamping plate 16 to move until the clamping plate 16 abuts against the upper end of the gas generator head 1, and tighten the clamping screw 23 to complete the locking and fixing of the upper end of the gas generator head 1.

[0069] The present invention also proposes an assembly method for the above-mentioned tooling:

[0070] The state after assembly is as follows Figure 1As shown, the specific docking process is as follows: First, the main support 2 and the fixed support 3 are assembled. The locking plate 11 and the clamping plate 16 are connected to the corresponding fixed plate 9 and support frame 10 through the waist-shaped slots on their structures using locking screws 20 and clamping screws 23, respectively. The stroke is adjusted through their waist-shaped hole structure. After the tooling assembly is completed, the gas generator head 1 is assembled. First, the locking plate 11 and the clamping plate 16 are adjusted to the end. Then, the gas generator head 1 is hoisted. The assembly of the locking plate 11 with a certain type of gas generator head 1 is carried out first. The assembly process is as follows: Figure 2 As shown, adjust the position of the locking plate 11 so that the two locking plates 11 clamp the lower end of the gas generator head 1, and fix the position of the locking plate 11 with the locking screw 20. Then, quickly lock the locking plate 11 with the mounting bracket 15 by the screw 14 on the locking plate 11. During the locking process, the protective rubber 12 on the locking plate 11 can play a sufficient protective role. Then, adjust the position of the pressure plate 16 so that the two pressure plates 16 clamp the upper end of the gas generator head 1, and fix the position of the pressure plate 16 with the pressure screw 23 to press the gas generator head 1 of a certain type, so as to prevent it from falling off and bumping during the test. After the test is completed, the tooling is removed by reversing the assembly process.

Claims

1. A gas generator head clamping fixture, characterized in that: It includes a main support (2), a fixed support (3), a lower locking assembly (4), and an upper clamping assembly (5); A water return hole (21) is provided in the middle of the main support (2); The fixed bracket (3) includes a fixed plate (9) and two support frames (10) installed at either opposite end of the fixed plate (9); The fixing plate (9) is installed on the main support (2), and a first through hole (24) communicating with the water return hole (21) of the main support (2) is provided in the middle of the fixing plate (9); The lower locking assembly (4) includes a first lower locking member and a second lower locking member respectively installed on the remaining opposite sides of the fixing plate (9). The first lower locking member and the second lower locking member are close to each other at one end to lock the lower end of the gas generator head (1). The upper end clamping assembly (5) includes a first upper end clamping member and a second upper end clamping member respectively installed on two support frames (10). The first upper end clamping member and the second upper end clamping member are close to each other at one end to clamp the upper end of the gas generator head (1).

2. The gas generator head clamping fixture according to claim 1, characterized in that: The first lower locking member includes a locking plate (11) and at least two locking screws (20). One end of the locking plate (11) is provided with a semi-circular notch that matches the size of the lower end of the gas generator head (1), and the other end is provided with at least two locking strip grooves. The direction of the major axis of the locking strip groove is the same as the arrangement direction of the first lower locking member and the second lower locking member. One end of the locking screw (20) passes through the locking strip groove and is connected to the fixing plate (9). The second lower locking member has the same structure as the first lower locking member, and clamps the lower end of the gas generator head (1) through two semi-circular notches.

3. The gas generator head clamping fixture according to claim 2, characterized in that: The lower locking assembly (4) also includes two fasteners respectively disposed on both sides of the semi-circular notch of the locking plate (11) for connecting the two locking plates (11); The fastener includes a screw (14), a nut (22), and two mounting brackets (15). The two mounting brackets (15) are respectively installed on two locking plates (11) at corresponding positions. One end of the screw (14) is installed on one of the mounting brackets (15) of one locking plate (11), and the other end passes through the corresponding mounting bracket (15) of the other locking plate (11) and is connected to the nut (22).

4. The gas generator head clamping fixture according to claim 3, characterized in that: The first upper clamping member includes a clamping plate (16) and at least two clamping screws (23). One end of the clamping plate (16) is an arc-shaped notch structure, and the other end of the clamping plate (16) is provided with at least two clamping strip grooves. The long axis of the clamping strip grooves is set in the same direction as the arrangement direction of the first upper clamping member and the second upper clamping member. One end of the clamping screw (23) passes through the clamping strip groove and is connected to the support frame (10). The second upper clamping member has the same structure as the first upper clamping member, and clamps the upper end of the gas generator head (1) through two arc-shaped notches.

5. The gas generator head clamping fixture according to claim 4, characterized in that: The lower locking assembly (4) also includes two locking protection components respectively disposed at the semi-circular notches of the first lower locking component and the second lower locking component; The locking protection component includes a protective rubber (12) and two protective plates (13) with L-shaped cross sections that match the shape of the semi-circular notch of the locking plate (11). The two protective plates (13) are respectively installed opposite each other on the upper and lower sides of the semi-circular notch of the locking plate (11). The protective rubber (12) is located in the semi-circular notch of the locking plate (11) and between the two protective plates (13). The upper and lower ends of the protective rubber (12) are provided with two grooves that match the shape of the protective plates (13). The bent ends of the two protective plates (13) are respectively embedded in the corresponding grooves.

6. The gas generator head clamping fixture according to claim 5, characterized in that: The upper clamping assembly (5) also includes two clamping protection components respectively disposed at the arc-shaped notches of the first upper clamping component and the second upper clamping component; The structure of the clamping protective component is the same as that of the locking protective component. The two protective plates (13) are respectively installed on the upper and lower sides of the clamping plate (16); the protective rubber (12) is set in the arc-shaped notch of the clamping plate (16) and located between the two protective plates (13).

7. A gas generator head clamping fixture according to any one of claims 4-6, characterized in that: The main support (2) includes a first base plate (7), a second base plate (19), two L-shaped base plates (17), two sets of columns respectively installed at the lower end of the horizontal plate of the L-shaped base plate (17), and two connecting plates (18) for connecting each set of columns into one unit. The two ends of the second substrate (19) overlap the horizontal plates of the two L-shaped substrates (17), and the end faces of the two ends of the second substrate (19) are respectively connected to the vertical plates of the two L-shaped substrates (17) by screws. The first substrate (7) is disposed on the upper surface of the second substrate (19), and the second substrate (19) is connected to the first substrate (7) by screws; the return water hole (21) is disposed in the middle of the first substrate (7); The second substrate (19) has a second through hole in the middle that communicates with the return water hole (21).

8. The gas generator head clamping fixture according to claim 7, characterized in that: Both the locking plate (11) and the pressing plate (16) are provided with weight reduction grooves.

9. A gas generator head clamping fixture according to claim 8, characterized in that: The first substrate (7) has lugs (8) on both sides of its upper surface.

10. A method of using the gas generator head clamping fixture according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Install the fixing bracket (3) on the main bracket (2); Step 2: Install the first lower end locking piece and the second lower end locking piece on the fixing plate (9) of the fixing bracket (3), and install the first upper end pressing piece and the second upper end pressing piece on the support frame (10) of the fixing bracket (3); Step 3: Adjust the stroke of the first lower locking member, the second lower locking member, the first upper pressing member, and the second upper pressing member to the end, place the gas generator head (1) between the first lower locking member and the second lower locking member, adjust the position of the first lower locking member and the second lower locking member to lock the lower end of the gas generator head (1); at the same time, adjust the position of the first upper pressing member and the second upper pressing member to press the upper end of the gas generator head (1) to complete the clamping of the gas generator head (1).

Images