Impact closure device for preventing bushing from falling off

Abstract

This invention discloses an impact-sealing device for preventing bushing detachment, belonging to the field of aerospace mechanical assembly technology. It includes a housing, and is characterized by further including an automatic centering detection component. The housing has a valve chamber, an air inlet passage, an air outlet passage, a first booster piston air inlet passage, a second booster piston air inlet passage, a booster piston exhaust passage, a pilot exhaust pipe, and a pilot air inlet pipe. The first booster piston air inlet passage is connected to the second booster piston air inlet passage, and the second booster piston air inlet passage is connected to the booster piston exhaust passage. One end of the pilot exhaust pipe is connected to a traveling cylinder, and the other end is connected to a booster regulating valve. A pneumatic automatic impact-sealing component is located at the center of the housing, and the booster impact-sealing wedge surrounds the outer wall of a conical centering support block. This invention enables device alignment detection, ensuring that the impact-sealing wedge, under the action of the piston, achieves consistent sealing on both sides of the mounting hole, thereby effectively improving the impact-sealing quality.

Description

Technical Field

[0001] This invention relates to the field of aerospace mechanical assembly technology, and in particular to an impact sealing device for preventing bushings from falling off. Background Technology

[0002] With the continuous development of the aviation industry, the assembly of bushing parts involves various critical parts of the aircraft and is carried out in large quantities, requiring high assembly quality and efficiency. In actual assembly production, the bushing deformation, inner diameter, push-out force, and integrity of mating parts are uncertain after assembly according to design assembly tolerances. External factors such as long working time and excessive load can cause bushing parts to fall off.

[0003] The existing impact finishing method involves using a hammer or mallet to hammer the joint. The impact finishing position, force, and depth depend entirely on the individual experience of the assembly operator, and it also has an unpredictable destructive effect on the surface of the mounting hole. Although existing specifications stipulate some impact finishing standards, in actual assembly, operators cannot guarantee that the impact finishing tool is coaxial with the mounting hole every time. Often, one side will have excessive impact finishing while the other side does not meet the impact finishing requirements. Repeated impact finishing will greatly reduce the quality of the mounting surface, and in severe cases, it may even lead to the scrapping of the entire part.

[0004] Existing technologies for preventing the detachment of component bushings due to impact sealing are inadequate. They lack centering and detection devices, resulting in randomness and inconsistent quality of impact sealing, making it difficult to meet the production efficiency and quality requirements of assembly lines.

[0005] Chinese patent document CN208680366U, published on April 2, 2019, discloses an opening bushing closing device, including a frame, a closing mold that can move longitudinally and is mounted on the frame, a first driving device, and a second driving device. The closing mold includes a base plate with a first central hole. A hollow hydraulic cylinder is mounted above the base plate and has a longitudinal pressing channel. A pressing rod is provided in the pressing channel and connected to the second driving device. An impact slip ring is connected to the output end of the hollow hydraulic cylinder. Multiple closing rods are mounted longitudinally on the impact slip ring. A mold fixing seat is provided below the base plate. The mold fixing seat includes a base plate and a side wall. The base plate has a second central hole. Multiple mold segments that can move in the radial direction of the second central hole are distributed around the second central hole on the base plate. An elastic component is provided between each mold segment. A conical sleeve is provided between the mold segment and the side wall. The closing rods pass through the base plate and are connected to the conical sleeve. The pressing channel, the first central hole, the center of the mold segment, and the second central hole are on the same straight line.

[0006] The open bushing closing device disclosed in this patent document is less constrained by space, and has a stable final closing size and a large closing force. However, because it cannot perform alignment detection, it cannot effectively ensure the consistency of the closing amount, which affects the impact closing quality. Summary of the Invention

[0007] In order to overcome the defects of the prior art, the present invention provides an impact closing device to prevent bushing from falling off. The present invention can realize the device alignment detection, so that the impact closing wedge block achieves the same closing amount on both sides of the mounting hole under the action of the piston, thereby effectively improving the impact closing quality.

[0008] This invention is achieved through the following technical solution:

[0009] An impact-sealing device for preventing bushing detachment includes a housing, characterized in that it further includes an automatic centering detection component located below the housing. The automatic centering detection component includes a chassis mounting plate, a conical centering support block, a centering ball, a compression spring, and at least three displacement sensors. The displacement sensors are mounted on the housing via threaded connections, and the three displacement sensors are not collinear. The centering ball and compression spring are connected to the chassis mounting plate via the conical centering support block using threaded connections. The housing has a valve chamber, an intake passage, an exhaust passage, a first booster piston intake passage, a second booster piston intake passage, a booster piston exhaust passage, a pilot exhaust pipe, and a pilot intake pipe. The first booster piston intake passage is connected to the second booster piston intake passage, and the second booster piston intake passage is connected to the booster piston exhaust passage. One end of the pilot exhaust pipe is connected to the travel cylinder. One end of the pilot intake pipe is connected to the travel cylinder, and the other end is connected to the booster control valve. A pneumatic automatic impact closing component is provided at the center of the housing. The pneumatic automatic impact closing component includes a travel cylinder, a booster cylinder, a booster impact closing wedge, and a booster control valve. The booster control valve is located diagonally above the travel cylinder and is installed in the valve cavity. The booster control valve includes a booster control valve core, a valve core plug, a valve core exhaust compression spring, and a valve core intake compression spring. One end of the valve core intake compression spring is fixed to the inner wall of the housing, and the other end of the valve core intake compression spring is connected to one end of the booster control valve core. The other end of the booster control valve core is connected to one end of the valve core exhaust compression spring, and the other end of the valve core exhaust compression spring is connected to the valve core plug. The booster impact closing wedge surrounds the outer wall of the conical centering support block.

[0010] The traveling cylinder includes a cylinder body and a traveling piston. The cylinder body is formed by a housing and a chassis mounting plate. The traveling piston is an irregularly shaped piston, and the lower end face of the traveling piston is an inclined plane of less than 45°. A sealing groove is provided on the traveling piston.

[0011] The top of the housing is connected to a process hole plug for sealing the intake passage of the second booster piston.

[0012] The booster cylinder is located directly above and coaxial with the travel cylinder. The booster cylinder includes a booster piston and a cylinder formed by the housing. The booster piston passes through the central hole of the housing and contacts the travel piston.

[0013] The upper and lower ends of the force-enhancing impact wedge are both inclined at 30°.

[0014] The chassis mounting plate is convex, and has spaced annular grooves and sliding support grooves, with at least two spaced annular grooves.

[0015] The force-enhancing impact-closing wedge is equipped with a sliding support block that is adapted to the sliding support groove.

[0016] The tapered centering support block has external threads on its surface, and a cavity for installing a compression spring and a centering ball is opened inside the tapered centering support block.

[0017] The beneficial effects of this invention are mainly reflected in the following aspects:

[0018] 1. In this invention, displacement sensors are mounted on the housing via threaded connections. The three displacement sensors are not collinear. A centering ball and a compression spring are connected to the chassis mounting plate via a tapered centering support block using threaded connections. The housing has a valve chamber, an intake passage, an exhaust passage, a first booster piston intake passage, a second booster piston intake passage, a booster piston exhaust passage, a pilot exhaust pipe, and a pilot intake pipe. The first booster piston intake passage is connected to the second booster piston intake passage, and the second booster piston intake passage is connected to the booster piston exhaust passage. One end of the pilot exhaust pipe is connected to the travel cylinder, and the other end is connected to the booster regulating valve. One end of the pilot intake pipe is connected to the travel cylinder, and the other end is connected to the booster regulating valve. A pneumatic automatic impact closing component is located at the center of the housing. The device includes a travel cylinder, a booster cylinder, a force-boosting impact closing wedge, and a force-boosting regulating valve. The force-boosting regulating valve is located diagonally above the travel cylinder and is installed inside the valve chamber. The force-boosting regulating valve includes a force-boosting regulating valve core, a valve core plug, a valve core exhaust compression spring, and a valve core intake compression spring. One end of the valve core intake compression spring is fixed to the inner wall of the housing, and the other end of the valve core intake compression spring is connected to one end of the force-boosting regulating valve core. The other end of the force-boosting regulating valve core is connected to one end of the valve core exhaust compression spring, and the other end of the valve core exhaust compression spring is connected to the valve core plug. The force-boosting impact closing wedge surrounds the outer wall of the conical centering support block. Compared with the prior art, this device can achieve alignment detection, ensuring that the impact closing wedge achieves consistent closing amount on both sides of the mounting hole under the action of the piston, thereby effectively improving the impact closing quality.

[0019] 2. This invention organically combines a traveling cylinder, a boosting cylinder, and a force-enhancing impact closing wedge to generate a large impact closing force even under relatively low pressure, and can effectively control the impact closing force by controlling the compressed gas pressure.

[0020] 3. The present invention, through the overall structure design, can adapt the conical centering support block and centering ball according to the size of the bushing base mounting hole, thereby realizing the flexibility of the entire impact closing device and reducing the variety of on-site tools caused by different bushing base mounting hole sizes.

[0021] 4. This invention features low cost, high efficiency, and time and labor saving. It also uses compressed gas commonly found in factories as a power source, making it inexpensive and environmentally friendly. Attached Figure Description

[0022] The present invention will now be further described in detail with reference to the accompanying drawings and specific embodiments:

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] The diagram shows the following markings: A1, housing; A2, booster piston; A3, traveling piston; A4, displacement sensor; A5, force-boosting impact wedge; A6, conical centering support block; A7, sliding support block; B1, centering ball; B2, compression spring; B3, chassis mounting plate; B5, force-boosting regulating valve core; B6, valve core plug; B7, valve core exhaust compression spring; B8, valve core intake compression spring; B9, process hole plug; C1, intake passage; C2, exhaust passage; C3, pilot exhaust pipe; C4, first booster piston intake passage; C5, booster piston exhaust passage; C6, pilot intake pipe; C7, second booster piston intake passage. Detailed Implementation

[0025] Example 1

[0026] See Figure 1An impact sealing device for preventing bushing detachment includes a housing A1 and an automatic centering detection component located below the housing A1. The automatic centering detection component includes a chassis mounting plate B3, a conical centering support block A6, a centering ball B1, a compression spring B2, and at least three displacement sensors A4. The displacement sensors A4 are threaded onto the housing A1, and the three displacement sensors A4 are not collinear. The centering ball B1 and compression spring B2 are threaded onto the chassis mounting plate B3 via the conical centering support block A6. The housing A1 has a valve chamber, an intake passage C1, an exhaust passage C2, a first booster piston intake passage C4, a second booster piston intake passage C7, a booster piston exhaust passage C5, a pilot exhaust pipe C3, and a pilot intake pipe C6. The first booster piston intake passage C4 is connected to the second booster piston intake passage C7, and the second booster piston intake passage C7 is connected to the booster piston exhaust passage C5. One end of the pilot exhaust pipe C3... One end of the pilot intake pipe C6 is connected to the travel cylinder, and the other end is connected to the booster control valve. A pneumatic automatic impact closing component is located at the center of the housing A1. This component includes the travel cylinder, the booster cylinder, the booster impact closing wedge A5, and the booster control valve. The booster control valve is located diagonally above the travel cylinder and is installed within the valve chamber. The booster control valve includes a booster control valve core B5 and a valve core plug. The valve core consists of a head B6, a valve core exhaust compression spring B7, and a valve core intake compression spring B8. One end of the valve core intake compression spring B8 is fixed to the inner wall of the housing A1, and the other end of the valve core intake compression spring B8 is connected to one end of the force-increasing regulating valve core B5. The other end of the force-increasing regulating valve core B5 is connected to one end of the valve core exhaust compression spring B7, and the other end of the valve core exhaust compression spring B7 is connected to the valve core plug B6. The force-increasing impact constriction wedge A5 surrounds the outer wall of the conical centering support block A6.

[0027] This embodiment is the most basic implementation method. Compared with the prior art, it can realize the device alignment detection, so that the impact closing wedge block can achieve the same closing amount on both sides of the mounting hole under the action of the piston, thereby effectively improving the impact closing quality.

[0028] Example 2

[0029] See Figure 1An impact sealing device for preventing bushing detachment includes a housing A1 and an automatic centering detection component located below the housing A1. The automatic centering detection component includes a chassis mounting plate B3, a conical centering support block A6, a centering ball B1, a compression spring B2, and at least three displacement sensors A4. The displacement sensors A4 are threaded onto the housing A1, and the three displacement sensors A4 are not collinear. The centering ball B1 and compression spring B2 are threaded onto the chassis mounting plate B3 via the conical centering support block A6. The housing A1 has a valve chamber, an intake passage C1, an exhaust passage C2, a first booster piston intake passage C4, a second booster piston intake passage C7, a booster piston exhaust passage C5, a pilot exhaust pipe C3, and a pilot intake pipe C6. The first booster piston intake passage C4 is connected to the second booster piston intake passage C7, and the second booster piston intake passage C7 is connected to the booster piston exhaust passage C5. One end of the pilot exhaust pipe C3... One end of the pilot intake pipe C6 is connected to the travel cylinder, and the other end is connected to the booster control valve. A pneumatic automatic impact closing component is located at the center of the housing A1. This component includes the travel cylinder, the booster cylinder, the booster impact closing wedge A5, and the booster control valve. The booster control valve is located diagonally above the travel cylinder and is installed within the valve chamber. The booster control valve includes a booster control valve core B5 and a valve core plug. The valve core consists of a head B6, a valve core exhaust compression spring B7, and a valve core intake compression spring B8. One end of the valve core intake compression spring B8 is fixed to the inner wall of the housing A1, and the other end of the valve core intake compression spring B8 is connected to one end of the force-increasing regulating valve core B5. The other end of the force-increasing regulating valve core B5 is connected to one end of the valve core exhaust compression spring B7, and the other end of the valve core exhaust compression spring B7 is connected to the valve core plug B6. The force-increasing impact constriction wedge A5 surrounds the outer wall of the conical centering support block A6.

[0030] The traveling cylinder includes a cylinder body and a traveling piston A3. The cylinder body is formed by a housing A1 and a chassis mounting plate B3. The traveling piston A3 is an irregularly shaped piston, and the lower end face of the traveling piston A3 is a 40° inclined surface. A sealing groove is provided on the traveling piston A3.

[0031] The top of the housing A1 is connected to a process hole plug B9 for sealing the intake passage C7 of the second booster piston.

[0032] This embodiment is a preferred implementation. By organically combining the traveling cylinder, the boosting cylinder, and the force-enhancing impact closing wedge A5, a large impact closing force can be generated even under relatively low pressure. Furthermore, the impact closing force can be effectively controlled by controlling the compressed gas pressure.

[0033] Example 3

[0034] See Figure 1An impact sealing device for preventing bushing detachment includes a housing A1 and an automatic centering detection component located below the housing A1. The automatic centering detection component includes a chassis mounting plate B3, a conical centering support block A6, a centering ball B1, a compression spring B2, and at least three displacement sensors A4. The displacement sensors A4 are threaded onto the housing A1, and the three displacement sensors A4 are not collinear. The centering ball B1 and compression spring B2 are threaded onto the chassis mounting plate B3 via the conical centering support block A6. The housing A1 has a valve chamber, an intake passage C1, an exhaust passage C2, a first booster piston intake passage C4, a second booster piston intake passage C7, a booster piston exhaust passage C5, a pilot exhaust pipe C3, and a pilot intake pipe C6. The first booster piston intake passage C4 is connected to the second booster piston intake passage C7, and the second booster piston intake passage C7 is connected to the booster piston exhaust passage C5. One end of the pilot exhaust pipe C3... One end of the pilot intake pipe C6 is connected to the travel cylinder, and the other end is connected to the booster control valve. A pneumatic automatic impact closing component is located at the center of the housing A1. This component includes the travel cylinder, the booster cylinder, the booster impact closing wedge A5, and the booster control valve. The booster control valve is located diagonally above the travel cylinder and is installed within the valve chamber. The booster control valve includes a booster control valve core B5 and a valve core plug. The valve core consists of a head B6, a valve core exhaust compression spring B7, and a valve core intake compression spring B8. One end of the valve core intake compression spring B8 is fixed to the inner wall of the housing A1, and the other end of the valve core intake compression spring B8 is connected to one end of the force-increasing regulating valve core B5. The other end of the force-increasing regulating valve core B5 is connected to one end of the valve core exhaust compression spring B7, and the other end of the valve core exhaust compression spring B7 is connected to the valve core plug B6. The force-increasing impact constriction wedge A5 surrounds the outer wall of the conical centering support block A6.

[0035] The traveling cylinder includes a cylinder body and a traveling piston A3. The cylinder body is formed by a housing A1 and a chassis mounting plate B3. The traveling piston A3 is an irregularly shaped piston, and the lower end face of the traveling piston A3 is a 35° inclined surface. A sealing groove is provided on the traveling piston A3.

[0036] The top of the housing A1 is connected to a process hole plug B9 for sealing the intake passage C7 of the second booster piston.

[0037] The booster cylinder is located directly above and coaxial with the travel cylinder. The booster cylinder includes a booster piston A2 and a cylinder formed by a housing A1. The booster piston A2 passes through the central hole of the housing A1 and contacts the travel piston A3.

[0038] The upper and lower surfaces of the force-enhancing impact-closing wedge A5 are both inclined at 30°.

[0039] The chassis mounting plate B3 is convex, and has two spaced annular grooves and sliding support grooves.

[0040] This embodiment is another preferred implementation. Through the overall structure design, the conical centering support block A6 and the centering ball B1 can be adapted according to the size of the bushing base mounting hole, thereby realizing the flexibility of the entire impact closing device and reducing the variety of on-site tools caused by different bushing base mounting hole sizes.

[0041] Example 4

[0042] See Figure 1 An impact sealing device for preventing bushing detachment includes a housing A1 and an automatic centering detection component located below the housing A1. The automatic centering detection component includes a chassis mounting plate B3, a conical centering support block A6, a centering ball B1, a compression spring B2, and at least three displacement sensors A4. The displacement sensors A4 are threaded onto the housing A1, and the three displacement sensors A4 are not collinear. The centering ball B1 and compression spring B2 are threaded onto the chassis mounting plate B3 via the conical centering support block A6. The housing A1 has a valve chamber, an intake passage C1, an exhaust passage C2, a first booster piston intake passage C4, a second booster piston intake passage C7, a booster piston exhaust passage C5, a pilot exhaust pipe C3, and a pilot intake pipe C6. The first booster piston intake passage C4 is connected to the second booster piston intake passage C7, and the second booster piston intake passage C7 is connected to the booster piston exhaust passage C5. One end of the pilot exhaust pipe C3... One end of the pilot intake pipe C6 is connected to the travel cylinder, and the other end is connected to the booster control valve. A pneumatic automatic impact closing component is located at the center of the housing A1. This component includes the travel cylinder, the booster cylinder, the booster impact closing wedge A5, and the booster control valve. The booster control valve is located diagonally above the travel cylinder and is installed within the valve chamber. The booster control valve includes a booster control valve core B5 and a valve core plug. The valve core consists of a head B6, a valve core exhaust compression spring B7, and a valve core intake compression spring B8. One end of the valve core intake compression spring B8 is fixed to the inner wall of the housing A1, and the other end of the valve core intake compression spring B8 is connected to one end of the force-increasing regulating valve core B5. The other end of the force-increasing regulating valve core B5 is connected to one end of the valve core exhaust compression spring B7, and the other end of the valve core exhaust compression spring B7 is connected to the valve core plug B6. The force-increasing impact constriction wedge A5 surrounds the outer wall of the conical centering support block A6.

[0043] The traveling cylinder includes a cylinder body and a traveling piston A3. The cylinder body is formed by a housing A1 and a chassis mounting plate B3. The traveling piston A3 is an irregularly shaped piston, and the lower end face of the traveling piston A3 is a 30° inclined surface. A sealing groove is provided on the traveling piston A3.

[0044] The top of the housing A1 is connected to a process hole plug B9 for sealing the intake passage C7 of the second booster piston.

[0045] The booster cylinder is located directly above and coaxial with the travel cylinder. The booster cylinder includes a booster piston A2 and a cylinder formed by a housing A1. The booster piston A2 passes through the central hole of the housing A1 and contacts the travel piston A3.

[0046] The upper and lower surfaces of the force-enhancing impact-closing wedge A5 are both inclined at 30°.

[0047] The chassis mounting plate B3 is convex, and the chassis mounting plate B3 has three spaced annular grooves and sliding support grooves.

[0048] The force-enhancing impact closing wedge A5 is provided with a sliding support block A7 that is adapted to the sliding support groove.

[0049] The tapered centering support block A6 has external threads on its surface, and the inside of the tapered centering support block A6 has a cavity for installing the compression spring B2 and the centering ball B1.

[0050] This embodiment is the best implementation method, which has the characteristics of low cost, high efficiency and time and labor saving, and uses compressed gas commonly found in factories as a power source, which is inexpensive and environmentally friendly.

[0051] The impact sealing process of this invention is as follows:

[0052] Connect the two-position four-way solenoid directional valve to the air inlet passage C1 of the impact closing device; the centering ball B1 contacts the bushing base mounting hole, and at least three displacement sensors A4 located on the chassis mounting plate B3 measure the distance to the mounting base; when the data from at least three displacement sensors A4 are consistent, the impact closing device issues a coaxiality reminder, completing the centering and automatic detection of the entire impact closing device; after receiving the centering and automatic detection reminder, the electromagnet on the right side of the two-position four-way solenoid directional valve is energized, pushing the valve core of the two-position four-way solenoid directional valve to move to the left. Compressed gas enters the intake passage C1 through the left position of the two-position four-way solenoid directional valve. The compressed gas then enters the travel cylinder. Under the action of the compressed gas, the travel piston A3 in the travel cylinder is displaced downward. The inclined surface at the end of the travel piston A3 contacts the force-enhancing impact closing wedge A5, so that the force-enhancing impact closing wedge A5 can move circumferentially in the sliding support groove on the chassis mounting plate B3. The impact force is amplified by the inclined surface. When the force-enhancing impact closing wedge A5 contacts the periphery of the base mounting closing, the travel cylinder of the impact closing device completes rapid travel.

[0053] When the compressed gas further enters the impact closing device through the intake passage C1, it enters the booster regulating valve through the pilot intake pipe C6, pushing the booster regulating valve core B5 to move to the right. The first booster piston intake passage C4 and the second booster piston intake passage C7 are connected, and the compressed gas enters the booster cylinder. Under the push of the compressed gas, the booster piston A2 moves downward and contacts the traveling piston A3 through the center hole of the housing A1, pushing the traveling piston A3 to move downward quickly, realizing the two-stage boosting. The traveling piston A3 is impacted and pushed by the booster piston A2, and the booster impact closing wedge A5 will quickly impact the closing edge of the bushing base mounting hole to realize closing. When the booster impact closing wedge A5 impacts the closing edge of the bushing base mounting hole, the centering ball B1 will compress the compression spring B2, realizing the upward movement of the centering ball B1 and returning it to the conical centering support block A6, preventing the booster impact closing wedge A5 from impacting and damaging the centering ball B1.

[0054] After the impact closing device completes one closing impact, the two-position four-way solenoid valve is de-energized. At this time, compressed gas enters the exhaust passage C2 of the impact closing device through the right position of the two-position four-way solenoid valve. The compressed gas enters the traveling cylinder, and the traveling piston A3 is displaced upward under the action of the compressed gas. It enters the right side of the booster regulating valve through the pilot exhaust pipe C3, pushing the booster regulating valve core B5 to move to the left. The second booster piston intake passage C7 is connected to the booster piston exhaust passage C5, completing the reset of the booster piston A2 and the traveling piston A3. The centering ball B1 is reset and ejected under the action of the compression spring B2, ready for the next impact closing.

Claims

1. An impact sealing device for preventing bushing detachment, comprising a housing (A1), characterized in that: It also includes an automatic centering detection component, located below the housing (A1). The automatic centering detection component includes a chassis mounting plate (B3), a conical centering support block (A6), a centering ball (B1), a compression spring (B2), and at least three displacement sensors (A4). The displacement sensors (A4) are mounted on the housing (A1) via threaded connections. The three displacement sensors (A4) are not collinear. The centering ball (B1) and the compression spring (B2) are connected to the chassis mounting plate via the conical centering support block (A6) using threaded connections. On plate (B3), the housing (A1) has a valve chamber, an intake passage (C1), an exhaust passage (C2), a first booster piston intake passage (C4), a second booster piston intake passage (C7), a booster piston exhaust passage (C5), a pilot exhaust pipe (C3), and a pilot intake pipe (C6). The first booster piston intake passage (C4) is connected to the second booster piston intake passage (C7), and the second booster piston intake passage (C7) is connected to the booster piston exhaust passage (C5). One end of the pilot exhaust pipe (C3) One end of the pilot intake pipe (C6) is connected to the travel cylinder, and the other end is connected to the booster control valve. A pneumatic automatic impact closing component is located at the center of the housing (A1). This pneumatic automatic impact closing component includes the travel cylinder, the booster cylinder, the booster impact closing wedge (A5), and the booster control valve. The booster control valve is located diagonally above the travel cylinder and is installed within the valve chamber. The booster control valve includes a booster control valve core (B5), a valve core plug (B6), and a valve core outlet. The air compression spring (B7) and the valve core inlet compression spring (B8) are provided. One end of the valve core inlet compression spring (B8) is fixed to the inner wall of the housing (A1). The other end of the valve core inlet compression spring (B8) is connected to one end of the force-increasing regulating valve core (B5). The other end of the force-increasing regulating valve core (B5) is connected to one end of the valve core exhaust compression spring (B7). The other end of the valve core exhaust compression spring (B7) is connected to the valve core plug (B6). The force-increasing impact closing wedge (A5) is wrapped around the outer wall of the conical centering support block (A6). The traveling cylinder includes a cylinder body and a traveling piston (A3). The cylinder body is formed by a housing (A1) and a chassis mounting plate (B3). The traveling piston (A3) is an irregularly shaped piston, and the lower end face of the traveling piston (A3) is an inclined surface of less than 45°. A sealing groove is provided on the traveling piston (A3).

2. The impact sealing device for preventing bushing detachment according to claim 1, characterized in that: The top of the housing (A1) is connected to a process hole plug (B9) for sealing the intake passage (C7) of the second booster piston.

3. The impact sealing device for preventing bushing detachment according to claim 2, characterized in that: The booster cylinder is located directly above and coaxial with the travel cylinder. The booster cylinder includes a booster piston (A2) and a cylinder formed by a housing (A1). The booster piston (A2) passes through the central hole of the housing (A1) and contacts the travel piston (A3).

4. The impact sealing device for preventing bushing detachment according to claim 3, characterized in that: The upper and lower ends of the force-enhancing impact wedge (A5) are both inclined at 30°.

5. The impact sealing device for preventing bushing detachment according to claim 4, characterized in that: The chassis mounting plate (B3) is convex, and the chassis mounting plate (B3) has spaced annular grooves and sliding support grooves, with at least two spaced annular grooves.

6. The impact sealing device for preventing bushing detachment according to claim 5, characterized in that: The force-enhancing impact closing wedge (A5) is provided with a sliding support block (A7) that is adapted to the sliding support groove.

7. The impact sealing device for preventing bushing detachment according to claim 6, characterized in that: The tapered centering support block (A6) has external threads on its surface, and the tapered centering support block (A6) has cavities inside for installing the compression spring (B2) and the centering ball (B1).

Images