Earthquake-resistant and vibration-reducing devices for building construction

Abstract

The present invention discloses an anti-seismic vibration reduction device for building construction, which specifically relates to the field of vibration reduction technology, including a foundation base, a buffer vibration reduction mechanism and a roll correction mechanism, wherein the buffer vibration reduction mechanism includes a load-bearing block, a fixed seat, a connecting rod, a rotating seat, a sliding rod and a vibration reduction spring; the load-bearing block is rotationally connected to the rotating seat, and the load-bearing block is synchronously connected to the roll correction mechanism; one end of the connecting rod is fixed to the fixed seat, and the other end is fixed to the rotating seat, the sliding rod is fixed under the rotating seat, the vibration reduction spring is sleeved on the sliding rod, one end of the vibration reduction spring is fixed to the rotating seat, and the other end is fixed to the foundation base, and the upper end of the foundation base is provided with a through hole adapted for the sliding rod to slide through. The anti-seismic vibration reduction device has the advantages of balancing earthquake shock waves and reducing the large shaking of the building structure when the surface is impacted by earthquake waves.

Description

Technical Field

[0001] The invention relates to the technical field of vibration reduction, and in particular discloses an anti-seismic vibration reduction device for a building. Background Art

[0002] The building seismic design code GB50011-2010: 8.1 specifies the seismic design parameters of civil houses in detail. Regarding the record of seismic structural design, Chinese patent application No. 202410745279X discloses a seismic reinforcement structure for a multi-layer masonry structure house. In this scheme, by setting water-absorbing expansion rods and sealing elastic parts, the connection strength between the reinforcement plate and the wall is strengthened, ensuring that the house wall is not prone to cracking or collapse during geological disasters.

[0003] When a geological disaster occurs, houses are mainly exposed to elastic waves that radiate from the earthquake source to the surrounding areas. According to the propagation mode, they can be divided into three types: longitudinal waves (P waves), transverse waves (S waves) (both longitudinal waves and transverse waves are body waves) and surface waves (L waves). That is, when a geological disaster occurs, the house structure shakes not only on the plane, but also on the longitudinal plane. In order to cope with the vibration of the building, high-rise buildings usually install dampers to dissipate the motion energy, thereby protecting the structural safety of the building as much as possible.

[0004] For residential buildings, when geological disasters occur, their vibration amplitude is smaller than that of high-rise buildings because they are on lower floors. However, as the ground is continuously impacted by earthquake waves, some buildings shake left and right and up and down, and the connection between the foundation and the ground is prone to breakage. Summary of the invention

[0005] The invention provides an anti-seismic vibration reduction device for a building, which has the advantages of being able to balance earthquake shock waves and reduce the large shaking of the building structure when the building structure is impacted by earthquake waves.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] The anti-seismic vibration reduction device of a building building comprises a foundation base, a buffer vibration reduction mechanism and a roll correction mechanism, wherein the buffer vibration reduction mechanism comprises a load-bearing block, a fixed seat, a connecting rod, a rotating seat, a sliding rod and a vibration reduction spring; the load-bearing block is rotationally connected to the rotating seat, and the load-bearing block is synchronously transmitted and connected to the roll correction mechanism; one end of the connecting rod is fixed to the fixed seat, and the other end is fixed to the rotating seat, the sliding rod is fixed under the rotating seat, the vibration reduction spring is sleeved on the sliding rod, one end of the vibration reduction spring is fixed to the rotating seat, and the other end is fixed to the foundation base, and the upper end of the foundation base is provided with a through hole adapted to the sliding passage of the sliding rod.

[0008] Among them, the advantages of the seismic vibration reduction device and the roll correction mechanism are that they can balance the impact of seismic waves on the foundation of the building, avoiding structural damage caused by instantaneous lateral or longitudinal influences.

[0009] Preferably, the buffer and vibration reduction mechanism also includes a pull rod, an elastic spring, a piston plate, a accommodating cylinder and a sealing cover; one end of the pull rod is rotatably connected to the rotating seat, and the other end is fixed to the piston plate in the accommodating cylinder, the open end of the accommodating cylinder is screwed and fixed to the sealing cover, and the sealing cover is provided with corresponding through holes adapted to the movement path of the pull rod; the elastic spring is sleeved on the pull rod, one end of the elastic spring is fixed to the piston plate, and the other end is tightly pressed against the inner end of the sealing cover.

[0010] The piston plate connected by the pull rod laterally arranged on the rotating seat slides in the accommodating cylinder, thereby further reducing the amplitude of the up and down movement of the sliding rod.

[0011] Preferably, the buffering and vibration reduction mechanism further comprises a fixing rod, wherein the fixing rod is fixed on the foundation base, and the end of the accommodating cylinder facing away from the rotating seat is rotatably connected to the upper end of the fixing rod.

[0012] Preferably, the buffer and vibration reduction mechanism also includes a spherical clamping head, a buffer rod, a buffer spring and a positioning rod; the foundation base includes an upper building base plate, a lower building base plate and a fixed column, and the upper building base plate and the lower building base plate are fixed by a fixed column; the positioning rod is fixed on the lower building base plate, and the buffer rod is slidably penetrated through the upper end of the positioning rod, and correspondingly, the positioning rod is provided with a sliding through hole; the buffer spring is sleeved on the buffer rod, and the spherical clamping head is fixed to the end of the buffer rod, one end of the buffer spring is clamped against the positioning rod, and the other end is clamped against the spherical clamping head; the lower end of the sliding rod is provided with a wedge-shaped guide head, and the spherical clamping head is clamped against the side wall of the wedge-shaped guide head.

[0013] Among them, the buffer structure design on the foundation can further buffer the up and down movement of the sliding rod to resist the instantaneous impact of the earthquake on the house structure.

[0014] Preferably, the roll correction mechanism includes an arc-shaped gear rail, a transmission wheel, a synchronous connecting rod, an auxiliary wheel, a slide rail plate, a spring and an arc-shaped pressure release plate; the transmission wheel and the ends of the synchronous connecting rod are fixed, and the transmission wheel and the arc-shaped gear rail are meshingly connected for transmission; the end of the synchronous connecting rod facing away from the transmission wheel is fixed to the auxiliary wheel, and the auxiliary wheel and the slide rail plate are meshingly connected for transmission; one end of the spring is fixed to the slide rail plate, and the other end is fixed to the arc-shaped pressure release plate, and the arc-shaped pressure release plate moves synchronously with the slide rail plate on a circumferential surface.

[0015] Among them, by setting up a roll correction mechanism, the instantaneous left and right shaking of the building structure caused by lateral seismic waves can be balanced to prevent it from being damaged.

[0016] Preferably, the roll correction mechanism further comprises a sleeve rod, wherein the sleeve rod is fixed below the slide rail plate, the spring is sleeved on the outer end of the sleeve rod, and the arc-shaped pressure release plate is provided with a through hole adapted for the sleeve rod to pass through.

[0017] Preferably, the roll correction mechanism also includes a U-shaped fixing frame, a rotating shaft and a sliding rail; a rotating hole adapted for the rotation of the rotating shaft is provided on the fixing seat, one end of the rotating shaft is fixed to the load-bearing block, and the other end is fixed to the U-shaped fixing frame, and the synchronous connecting rod is rotatably connected to the U-shaped fixing frame; the sliding rail is slidably connected to the sliding rail plate, and the sliding rail is fixed to the side end of the U-shaped fixing frame.

[0018] Preferably, a sliding positioning groove is provided on the slide rail, and correspondingly, a positioning protrusion is provided at the side end of the slide rail plate.

[0019] Wherein, the stability of the movement between the slide rail plate and the slide rail can be avoided through the sliding cooperation between the slide positioning groove and the positioning protrusion.

[0020] Preferably, the roll correction mechanism further comprises an L-shaped connecting rod, one end of which is fixed to a fixing seat, and the other end of which is fixed to an arc-shaped gear rail.

[0021] Preferably, the roll correction mechanism further comprises a fixed connecting rod, one end of which is fixed to the slide rail, and the other end of which is fixed to the arc-shaped pressure release plate.

[0022] Compared with the prior art, the advantages or beneficial effects of the technical solution of the present application include:

[0023] 1. The present invention designs a buffering and vibration reduction mechanism at the bottom end of the house foundation, which can reduce the violent up and down shaking of the house structure caused by the instantaneous impact of the longitudinal wave of the earthquake, thereby causing the house connection structure to be destroyed.

[0024] 2. At the same time, the present invention can prevent the house structure from shaking violently left and right when it is impacted by transverse waves through the design of the roll correction mechanism, which can cause further damage to the house structure.

[0025] 3. The anti-seismic vibration reduction device provided by the present invention can make up for the lack of dampers installed in low-rise residential buildings, and slow down the lateral or longitudinal movement of the house structure during earthquake disasters to the greatest extent. It not only provides residents with a safer living environment, but also reduces the damage to the structure of houses caused by high-frequency low-level earthquakes in earthquake-prone areas, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the anti-seismic and vibration-reducing device (front and side);

[0027] Figure 2 for Figure 1 A magnified view of part A in FIG.

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the anti-seismic and vibration-reducing device (side view);

[0029] Figure 4 It is a three-dimensional structural diagram of the anti-seismic vibration reduction device (top view);

[0030] Figure 5 for Figure 4 Sectional view along the AA plane;

[0031] Figure 6 Schematic diagram of application scenarios of anti-seismic and vibration reduction devices.

[0032] In the figure: 1, load-bearing block, 2, fixed seat, 3, U-shaped fixing frame, 4, slide rail plate, 5, slide rail, 7, fixed connecting rod, 8, arc-shaped pressure release plate, 9, shock-absorbing spring, 10, rotating seat, 12, accommodating cylinder, 13, sealing cover, 14, pull rod, 16, fixed rod, 17, upper base plate, 18, fixed column, 19, lower base plate, 20, auxiliary drive wheel, 21, L-shaped connecting rod, 23, connecting rod, 24, arc-shaped gear rail, 25, transmission wheel, 26, synchronous connecting rod, 27, spring, 28, elastic spring, 29, piston plate, 30, sliding rod, 31, wedge-shaped guide head, 32, ball-type tightening head, 33, buffer rod, 34, buffer spring, 35, positioning rod, 36, sleeve rod. DETAILED DESCRIPTION

[0033] The following will describe the implementation methods of the present application in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present application applies technical means to solve technical problems and achieve corresponding technical effects can be fully understood and implemented accordingly. The embodiments of the present application and the various features in the embodiments can be combined with each other without conflict, and the technical solutions formed are all within the protection scope of the present application.

[0034] It should be clear that the embodiments described below are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by technicians in the relevant field without making creative work are within the scope of protection of the present application. Example 1

[0035] like Figure 1-Figure 5As shown, the anti-seismic vibration reduction device for building construction includes a foundation base, a buffer vibration reduction mechanism and a roll correction mechanism, the buffer vibration reduction mechanism includes a load-bearing block 1, a fixed seat 2, a connecting rod 23, a rotating seat 10, a sliding rod 30 and a vibration reduction spring 9; the load-bearing block 1 is rotatably connected to the rotating seat 10, and the load-bearing block 1 is synchronously transmitted and connected to the roll correction mechanism; one end of the connecting rod 23 is fixed to the fixed seat 2, and the other end is fixed to the rotating seat 10, the sliding rod 30 is fixed under the rotating seat 10, the vibration reduction spring 9 is sleeved on the sliding rod 30, one end of the vibration reduction spring 9 is fixed to the rotating seat 10, and the other end is fixed to the foundation base, and the upper end of the foundation base is provided with a through hole adapted to the sliding rod 30 to slide through.

[0036] At the same time, the buffer vibration reduction mechanism also includes a pull rod 14, an elastic spring 28, a piston plate 29, a receiving tube 12, a fixed rod 16 and a sealing cover 13; one end of the pull rod 14 is rotatably connected to the rotating seat 10, and the other end is fixed to the piston plate 29 in the receiving tube 12, the open end of the receiving tube 12 is screwed and fixed to the sealing cover 13, and the sealing cover 13 is provided with a corresponding through hole adapted to the movement path of the pull rod 14; the elastic spring 28 is sleeved on the pull rod 14, one end of the elastic spring 28 is fixed to the piston plate 29, and the other end is tightly pressed against the inner side end of the sealing cover 13. The fixed rod 16 is fixed to the foundation base, and the end of the receiving tube 12 facing away from the rotating seat 10 is rotatably connected to the upper end of the fixed rod 16.

[0037] In addition, the buffer vibration reduction mechanism also includes a spherical clamping head 32, a buffer rod 33, a buffer spring 34 and a positioning rod 35; the foundation base includes an upper building base plate 17, a lower building base plate 19 and a fixed column 18, and the upper building base plate 17 and the lower building base plate 19 are fixed by the fixed column 18; the positioning rod 35 is fixed on the lower building base plate 19, and the buffer rod 33 is slidably penetrated through the upper end of the positioning rod 35, and correspondingly, the positioning rod 35 is provided with a sliding through hole; the buffer spring 34 is sleeved on the buffer rod 33, and the spherical clamping head 32 is fixed to the end of the buffer rod 33, one end of the buffer spring 34 is clamped against the positioning rod 35, and the other end is clamped against the spherical clamping head 32; a wedge-shaped guide head 31 is provided at the lower end of the sliding rod 30, and the spherical clamping head 32 is clamped against the side wall of the wedge-shaped guide head 31.

[0038] See also Figure 3 and Figure 5 , the connection mode and working principle of the internal components of the buffer and vibration reduction mechanism are as follows:

[0039] When a building installed on the load-bearing block 1 is subjected to a geological disaster and causes longitudinal vibration, it will be damped by three parts:

[0040] First, after the sliding rod 30 bears the weight, it will move up and down along the through hole on the upper base plate 17, during which it will be damped by the damping spring 9 sleeved on the outer end of the sliding rod 30, thereby resisting the longitudinal impact caused by the earthquake wave.

[0041] Second, during the up and down movement of the sliding rod 30, the pull rod 14 will bend. At this time, the piston plate 29 fixed to the pull rod 14 will slide along the accommodating tube 12, and the elastic spring 28 will be squeezed during the sliding, thereby achieving a shock-absorbing effect. During the above movement process, since the other end of the accommodating tube 12 is fixed to the fixed rod 16, and the sealing cover 13 screwed to the accommodating tube 12 has a hole reserved to adapt to the movement path of the pull rod 14. This hole is definitely much larger than the diameter of the pull rod 14, which can facilitate the movement of the pull rod 14 in the direction during the movement. For example, Figure 5 For example, when the sliding rod 30 moves upward, it will drive the end of the pull rod 14 close to the sliding rod 30 to move upward. At this time, the elastic spring 28 is squeezed, the piston plate 29 moves to the left, and the connecting side of the accommodating cylinder 12 and the fixed rod 16 will be tilted upward, and vice versa.

[0042] 3. When the sliding rod 30 moves up and down, the wedge-shaped guide head 31 at the bottom end will be squeezed by the spherical abutment head 32 arranged on the periphery. Figure 5 For example, when the sliding rod 30 moves downward, the ball-type abutting head 32 is squeezed and moves to the left, thereby driving the buffer rod 33 to move to the left. The buffer rod 33 squeezes the buffer spring 34 during the movement to the left, thereby further causing elastic buffering to the movement of the sliding rod 30.

[0043] Therefore, the above three buffering and vibration reduction methods can be applied to the vibration reduction of large-mass and large-volume building constructions to reduce the impact of longitudinal earthquake shock waves on the buildings. Example 2

[0044] like Figure 1 and Figure 2As shown, this embodiment provides a roll correction mechanism, which includes an arc gear rail 24, a transmission wheel 25, a synchronous connecting rod 26, an auxiliary wheel 20, a slide rail plate 4, a spring 27, an L-shaped connecting rod 21, a fixed connecting rod 7 and an arc pressure release plate 8; the transmission wheel 25 and the synchronous connecting rod 26 are fixed at their ends, and the transmission wheel 25 and the arc gear rail 24 are meshed and connected for transmission; the end of the synchronous connecting rod 26 facing away from the transmission wheel 25 is fixed to the auxiliary wheel 20, and the auxiliary wheel 20 and the slide rail plate 4 are meshed and connected for transmission; one end of the spring 27 is fixed to the slide rail plate 4, and the other end is fixed to the arc pressure release plate 8, and the arc pressure release plate 8 moves synchronously with the slide rail plate 4 on the circumferential surface. The roll correction mechanism also includes a sleeve rod 36, which is fixed below the slide rail plate 4, and the spring 27 is sleeved on the outer end of the sleeve rod 36, and the arc pressure release plate 8 is provided with a through hole adapted to the sleeve rod 36. The roll correction mechanism also includes a U-shaped fixing frame 3, a rotating shaft and a slide rail 5; the fixing seat 2 is provided with a rotating hole adapted to the rotation of the rotating shaft, one end of the rotating shaft is fixed to the load-bearing block 1, and the other end is fixed to the U-shaped fixing frame 3, and the synchronous connecting rod 26 is rotatably connected to the U-shaped fixing frame 3; the slide rail 5 is slidably connected to the slide rail plate 4, and the slide rail 5 is fixed to the side end of the U-shaped fixing frame 3. One end of the L-shaped connecting rod 21 is fixed to the fixing seat 2, and the other end is fixed to the arc gear rail 24. One end of the fixed connecting rod 7 is fixed to the slide rail 5, and the other end is fixed to the arc pressure release plate 8.

[0045] In order to further reduce the left and right shaking of the building caused by earthquakes, this embodiment adds a roll correction mechanism to buffer the impact caused by the seismic shear wave. Figure 2 As shown:

[0046] When the building fixed to the load-bearing block 1 is shaken by the impact from left to right, the U-shaped fixing frame 3 will also shake from left to right. During the left and right movement of the U-shaped fixing frame 3, the driving wheel 25 and the auxiliary driving wheel 20 connected to it will also move horizontally, and the movement path is an arc. Figure 2 For example, since the transmission wheel 25 and the arc gear rail 24 are meshed, and the arc gear rail 24 is fixed, the transmission wheel 25 will mesh with the transmission wheel 25 when following the swing of the U-shaped fixing frame 3, and the auxiliary wheel 20 that rotates synchronously with the transmission wheel 25 will also rotate. At the same time, since the auxiliary wheel 20 and the slide rail plate 4 are meshed and driven, when the auxiliary wheel 20 rotates, it will drive the slide rail plate 4 to move up and down along the slide rail. The slide rail plate 4 will squeeze the spring 27 during the up and down movement, thereby realizing the correction of the lateral shaking of the building.

[0047] Meanwhile, in the present embodiment, a sliding positioning groove is provided on the slide rail 5, and correspondingly, a positioning protrusion is provided on the side end of the slide rail plate 4. Through the cooperation of the sliding positioning groove and the positioning protrusion, the slide rail plate 4 and the slide rail 5 can be prevented from deviating when sliding. Example 3

[0048] like Figure 6 As shown, when used, the anti-seismic vibration reduction device can be pre-buried underground, and the base of the building can be cast on the load-bearing blocks 1 in the anti-seismic vibration reduction device. The bottom and side ends of the foundation base are fixed to the ground by casting to prevent the building base from collapsing due to instability.

Claims

1. The anti-seismic vibration reduction device for building construction is characterized in that: It comprises a foundation base, a buffer vibration reduction mechanism and a roll correction mechanism, wherein the buffer vibration reduction mechanism comprises a load-bearing block (1), a fixed seat (2), a connecting rod (23), a rotating seat (10), a sliding rod (30) and a vibration reduction spring (9); The load-bearing block (1) is rotatably connected to the rotating seat (10), and the load-bearing block (1) is synchronously connected to the roll correction mechanism; one end of the connecting rod (23) is fixed to the fixed seat (2), and the other end is fixed to the rotating seat (10); the sliding rod (30) is fixed below the rotating seat (10); the damping spring (9) is sleeved on the sliding rod (30); one end of the damping spring (9) is fixed to the rotating seat (10), and the other end is fixed to the foundation base; the upper end of the foundation base is provided with a through hole adapted for the sliding rod (30) to slide through; The roll correction mechanism comprises an arc-shaped gear rail (24), a transmission wheel (25), a synchronous connecting rod (26), an auxiliary drive wheel (20), a slide rail plate (4), a spring (27) and an arc-shaped pressure release plate (8); The ends of the transmission wheel (25) and the synchronous connecting rod (26) are fixed, and the transmission wheel (25) and the arc gear rail (24) are meshed and connected to each other; the end of the synchronous connecting rod (26) facing away from the transmission wheel (25) is fixed to the auxiliary wheel (20), and the auxiliary wheel (20) and the slide rail plate (4) are meshed and connected to each other; one end of the spring (27) is fixed to the slide rail plate (4), and the other end is fixed to the arc pressure release plate (8), and the arc pressure release plate (8) moves synchronously with the slide rail plate (4) on the circumferential surface; The roll correction mechanism further comprises a sleeve rod (36), the sleeve rod (36) being fixed below the slide rail plate (4), the spring (27) being sleeved on the outer end of the sleeve rod (36), and the arc-shaped pressure release plate (8) being provided with a through hole adapted for the sleeve rod (36) to penetrate through; The roll correction mechanism further comprises a U-shaped fixing frame (3), a rotating shaft and a slide rail (5); The fixing seat (2) is provided with a rotation hole adapted to rotate the rotation shaft; one end of the rotation shaft is fixed to the load-bearing block (1), and the other end is fixed to the U-shaped fixing frame (3); the synchronous connecting rod (26) is rotationally connected to the U-shaped fixing frame (3); the slide rail (5) is slidably connected to the slide rail plate (4), and the slide rail (5) is fixed to the side end of the U-shaped fixing frame (3).

2. The anti-seismic vibration reduction device for building construction according to claim 1, characterized in that: The buffer vibration reduction mechanism also includes a pull rod (14), an elastic spring (28), a piston plate (29), a receiving cylinder (13), and a sealing cover (12); One end of the pull rod (14) is rotatably connected to the rotating seat (10), and the other end is fixed to the piston plate (29) in the accommodating tube (13). The open end of the accommodating tube (13) is screwed and fixed to the sealing cover (12), and the sealing cover (12) is provided with a corresponding through hole adapted to the movement path of the pull rod (14); the elastic spring (28) is sleeved on the pull rod (14), and one end of the elastic spring (28) is fixed to the piston plate (29), and the other end is tightly pressed against the inner end of the sealing cover (12).

3. The anti-seismic vibration reduction device for building construction according to claim 2, characterized in that: The buffer vibration reduction mechanism also includes a fixing rod (16), wherein the fixing rod (16) is fixed on the foundation base, and the end of the accommodating cylinder (13) facing away from the rotating seat (10) is rotatably connected to the upper end of the fixing rod (16).

4. The anti-seismic vibration reduction device for building construction according to claim 1, characterized in that: The buffer vibration reduction mechanism also includes a spherical abutment head (32), a buffer rod (33), a buffer spring (34) and a positioning rod (35); The foundation base comprises an upper foundation base (17), a lower foundation base (19) and a fixed column (18), wherein the upper foundation base (17) and the lower foundation base (19) are fixed via the fixed column (18); the positioning rod (35) is fixed on the lower foundation base (19), the buffer rod (33) is slidably arranged on the upper end of the positioning rod (35), and correspondingly, a sliding through hole is arranged on the positioning rod (35); the buffer spring (34) is sleeved on the buffer rod (33), the ball-shaped abutting head (32) is fixed to the end of the buffer rod (33), one end of the buffer spring (34) is abutted against the positioning rod (35), and the other end is abutted against the ball-shaped abutting head (32); a wedge-shaped guide head (31) is arranged at the lower end of the sliding rod (30), and the ball-shaped abutting head (32) is abutted against the side wall of the wedge-shaped guide head (31).

5. The anti-seismic vibration reduction device for building construction according to claim 1, characterized in that: The slide rail (5) is provided with a sliding positioning groove, and correspondingly, a positioning protrusion is provided at the side end of the slide rail plate (4).

6. The anti-seismic vibration reduction device for building construction according to claim 1, characterized in that: The roll correction mechanism further comprises an L-shaped connecting rod (21), one end of the L-shaped connecting rod (21) being fixed to the fixing seat (2), and the other end of the L-shaped connecting rod (21) being fixed to the arc-shaped gear rail (24).

7. The anti-seismic vibration reduction device for building construction according to claim 1, characterized in that: The roll correction mechanism further comprises a fixed connecting rod (7), one end of the fixed connecting rod (7) being fixed to the slide rail (5), and the other end of the fixed connecting rod (7) being fixed to the arc-shaped pressure release plate (8).

Images