A remote locking pendulum system for a metal zero-length spring relative gravimeter

Abstract

A remote loosening and locking pendulum system for a metal zero-length spring relative to a gravity meter, comprising a locking pendulum motor, a transmission assembly, a locking pendulum positioning member, and a fixing assembly, wherein the locking pendulum member is clamped and arranged between a first locking pendulum arm and a second locking pendulum arm, the upper cover plate and the lower cover plate are connected by a supporting assembly, a locking pendulum motor is installed on the top of the upper cover plate, the locking pendulum motor is connected to a control terminal signal, the output shaft of the locking pendulum motor passes through the upper cover plate and is connected to a transmission pinion gear, the outer periphery of the transmission pinion gear is meshed with a first locking pendulum gear, the first locking pendulum gear is meshed with a second locking pendulum gear, the first locking pendulum gear and the second locking pendulum gear are movably connected with the lower cover plate; a first gear pin is arranged on the first locking pendulum gear, the first gear pin rotates clockwise along the first locking pendulum gear and abuts against the first locking pendulum arm, and a second gear pin is arranged on the second locking pendulum gear. The present invention can protect the metal zero-length spring when vibration occurs in the wild.

Description

Technical Field

[0001] The invention relates to an improvement of a metal zero-length spring measurement technology, belongs to the field of earth gravity, and in particular to a remote locking pendulum system of a metal zero-length spring relative gravimeter. Background Art

[0002] Earth gravity is an important physical quantity in geodesy, geophysics and metrology. Its size is mainly affected by the structure and shape of the earth. The metal zero-length spring relative gravimeter can play an important role in geophysics, metrology and other disciplines as well as national defense and security. Due to the high accuracy of static gravimeters, the observed gravity values ​​can extract a lot of useful information. The metal zero-length spring gravimeter is a precision instrument that uses the elastic properties of the metal zero-length spring to accurately measure the change of gravity acceleration in the earth's gravity field. The most important sensor part is the metal zero-length spring, which has very high precision and sensitivity. In normal observation, the metal spring and the connected lock pendulum are in a free state. Under field conditions, the gravimeter is prone to vibration, which causes the measured metal zero-length spring to shake, resulting in irreversible damage to the metal zero-length spring.

[0003] The Chinese patent application with application number CN201811268570.3 and application date October 29, 2018 discloses a zero-length spring zero drift detection device, including a polyurethane insulation layer, an outer temperature-average cover, an inner temperature-average cover, a Dewar flask, a spring bracket assembly, a rangefinder mounting panel assembly, a rangefinder, a weight hanging column assembly, an inner temperature-average cover base, an outer temperature-average cover base and a leveling leg. By using a high-precision laser rangefinder, the zero-position drift of the zero-length spring, the core component of the relative gravimeter, can be directly, quickly and accurately measured. The test structure can compensate for the temperature and eliminate the adverse effects of the temperature change on the test structure. This solution is suitable for the screening of zero-length springs for relative gravimeters, but does not solve the problem that the metal zero-length spring cannot be protected when vibration occurs in the field.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of this patent application, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention

[0005] The purpose of the present invention is to overcome the problem in the prior art that the metal zero-length spring cannot be protected when vibration occurs in the wild, and to provide a remote loosening pendulum system for a metal zero-length spring relative to a gravimeter, which can protect the metal zero-length spring when vibration occurs in the wild.

[0006] To achieve the above purpose, the technical solution of the present invention is: a remote pendulum unlocking system for a metal zero-length spring relative to a gravimeter, the remote pendulum unlocking system for a metal zero-length spring relative to a gravimeter comprises a pendulum locking motor, a transmission assembly, a pendulum locking positioning member, and a fixing assembly, the pendulum locking positioning member comprises a first pendulum locking arm and a second pendulum locking arm which are symmetrically arranged, the fixing assembly comprises an upper cover plate and a lower cover plate, and the transmission assembly comprises a first pendulum locking gear and a second pendulum locking gear;

[0007] The upper end of the lock pendulum is arranged through the upper cover plate, and the lower end of the lock pendulum is arranged through the lower cover plate. The first lock pendulum arm and the second lock pendulum arm are installed on the top of the lower cover plate. The lock pendulum is clamped and arranged between the first lock pendulum arm and the second lock pendulum arm. The upper cover plate and the lower cover plate are connected by a support assembly. A lock pendulum motor is installed on the top of the upper cover plate. The lock pendulum motor is connected to the control terminal signal. The output shaft of the lock pendulum motor passes through the upper cover plate and is connected to the transmission pinion gear. The outer periphery of the transmission pinion gear is meshed with the first lock pendulum gear, the first lock pendulum gear is meshed with the second lock pendulum gear, and the first lock pendulum gear and the second lock pendulum gear are movably connected to the lower cover plate;

[0008] A first gear pin is arranged on the first lock pendulum gear, and the first gear pin rotates clockwise along the first lock pendulum gear and abuts against the first lock pendulum arm. A second gear pin is arranged on the second lock pendulum gear, and the second gear pin rotates counterclockwise along the second lock pendulum gear and abuts against the second lock pendulum arm.

[0009] The support assembly includes a first support column, a second support column, a third support column, a fourth support column, a fifth support column and a sixth support column, the top of which passes through the upper cover plate and the bottom is installed on the lower cover plate;

[0010] The bottoms of the first support column and the second support column are respectively connected to the left and right sides of the top of the lower cover plate;

[0011] The lower end side periphery of the third support column is rotatably connected to the first lock swing arm, and the lower end side periphery of the fourth support column is rotatably connected to the second lock swing arm;

[0012] The bottom of the fifth support column passes through the first lock pendulum gear and is connected to the top of the lower cover plate. The fifth support column is rotationally connected to the first lock pendulum gear. The bottom of the sixth support column passes through the second lock pendulum gear and is connected to the top of the lower cover plate. The sixth support column is rotationally connected to the second lock pendulum gear.

[0013] The first support column, the second support column, the third support column, the fourth support column, the fifth support column and the sixth support column have the same structure.

[0014] The first support column includes an upper support column and a lower support column, the top of the upper support column passes through the upper cover plate, the bottom of the upper support column is connected to the top of the lower support column, and the bottom of the lower support column is connected to the top of the lower cover plate.

[0015] One end of the first locking swing arm is connected to the side of the first circular ring, the inner ring of the first circular ring is rotatably connected to the outer side of the third support column, and one end of the second locking swing arm is connected to the side of the second circular ring, and the inner ring of the second circular ring is rotatably connected to the outer side of the fourth support column.

[0016] The bottom of the first circular ring and the bottom of the second circular ring are both connected to the top of the base, and the bottom of the base is connected to the top of the lower cover plate.

[0017] The height of the base is the same as the thickness of the first pendulum-locking gear, and the thickness of the first pendulum-locking gear is the same as the thickness of the second pendulum-locking gear;

[0018] The cross section of the base is circular, and the diameter of the base is the same as the diameter of the first circular ring.

[0019] A first lock swing clamp is inserted into the side surface of the first lock swing arm, and a second lock swing clamp is inserted into the side surface of the second lock swing arm. The first lock swing clamp and the second lock swing clamp have the same structure and are symmetrically arranged.

[0020] The first lock swing clamp includes a first insertion rod and a first fixed clamp. One end of the first insertion rod passes through the first lock swing arm and is connected to one side of the first fixed clamp, and the other side of the first fixed clamp is clamped with the lock swing piece.

[0021] A card slot is provided on one side of the first fixing clamp close to the lock pendulum, and the card slot is card-connected with the lock pendulum.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The invention relates to a remote loosening and locking swing system of a metal zero-length spring relative to a gravimeter, wherein a first locking swing arm, a second locking swing arm, and a locking swing piece are clamped and arranged between the first locking swing arm and the second locking swing arm, a locking swing motor is installed on the top of the upper cover plate, the locking swing motor is connected to the control terminal signal, the output shaft of the locking swing motor passes through the upper cover plate and is connected to the transmission pinion, the outer periphery of the transmission pinion is meshed with the first locking swing gear, and the first locking swing gear is meshed with the second locking swing gear. When used, the locking swing motor is controlled to rotate counterclockwise, and the locking swing motor rotates counterclockwise to drive the first locking swing gear to rotate clockwise, and the first locking swing gear drives the second locking swing gear to rotate counterclockwise to drive the first gear pin and the second gear pin to rotate, thereby driving the first locking swing arm and the second locking swing arm to approach each other, so that the first locking swing clamp and the second locking swing clamp hold the locking swing piece, and the metal zero-length spring is locked in the first locking swing clamp and the second locking swing clamp for fixing, so as to timely protect the metal zero-length spring so that it can be in a stable state even when vibration occurs in the wild. Therefore, the present invention can protect the metal zero-length spring when vibration occurs in the wild.

[0024] 2. In the remote locking pendulum system of the metal zero-length spring relative gravimeter of the present invention, the remote control mechanism of the control terminal in the remote locking pendulum system can realize unattended operation. When the environment suddenly becomes bad during field observation, the pendulum can be locked in time remotely to avoid damage to the instrument, making the measurement safer and more adaptable. Therefore, the measurement of the present invention is safer and more adaptable.

[0025] 3. In the remote locking pendulum system of the metal zero-length spring relative gravimeter of the present invention, a protective cover and an external shielding component can be added according to the needs of actual occasions to avoid interference from rain and dust in the field environment, and further improve the convenience of measurement. Therefore, the present invention is convenient and safe to measure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 It is a structural schematic diagram of the lower cover plate in the present invention.

[0028] Figure 3 It is a structural schematic diagram of the lock pendulum positioning member in the present invention.

[0029] In the figure: pendulum motor 1, transmission pinion 2, pendulum lock positioning member 3, first pendulum lock arm 31, first ring 311, second pendulum lock arm 32, second ring 321, base 33, fixing assembly 4, upper cover plate 41, lower cover plate 42, through hole 43, pendulum lock member 5, supporting assembly 6, first supporting column 61, second supporting column 62, third supporting column 63, fourth supporting column 64, fifth supporting column 65, sixth supporting column 66, first pendulum lock clamp 71, first insert rod 711, first fixing clamp 712, slot 713, second pendulum lock clamp 72, first pendulum lock gear 81, second pendulum lock gear 82, first gear pin 91, second gear pin 92. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] See also Figures 1 to 3 A remote pendulum locking release system for a metal zero-length spring relative to a gravimeter, the remote pendulum locking release system for a metal zero-length spring relative to a gravimeter comprising a pendulum locking motor 1, a transmission assembly, a pendulum locking positioning member 3, and a fixing assembly 4, wherein the pendulum locking positioning member 3 comprises a first pendulum locking arm 31 and a second pendulum locking arm 32 which are symmetrically arranged, the fixing assembly 4 comprises an upper cover plate 41 and a lower cover plate 42, and the transmission assembly comprises a first pendulum locking gear 81 and a second pendulum locking gear 82;

[0032] The upper end of the lock swing member 5 is arranged through the upper cover plate 41, and the lower end of the lock swing member 5 is arranged through the lower cover plate 42. The first lock swing arm 31 and the second lock swing arm 32 are installed on the top of the lower cover plate 42. The lock swing member 5 is clamped and arranged between the first lock swing arm 31 and the second lock swing arm 32. The upper cover plate 41 and the lower cover plate 42 are connected through the support component 6. The top of the upper cover plate 41 is installed with a lock swing motor 1, which is connected to the control terminal signal. The output shaft of the lock swing motor 1 passes through the upper cover plate 41 and is connected to the transmission pinion 2. The outer periphery of the transmission pinion 2 is meshed with the first lock swing gear 81, and the first lock swing gear 81 is meshed with the second lock swing gear 82. The first lock swing gear 81 and the second lock swing gear 82 are movably connected with the lower cover plate 42;

[0033] A first gear pin 91 is provided on the first lock pendulum gear 81, and the first gear pin 91 rotates clockwise along the first lock pendulum gear 81 to abut against the first lock pendulum arm 31. A second gear pin 92 is provided on the second lock pendulum gear 82, and the second gear pin 92 rotates counterclockwise along the second lock pendulum gear 82 to abut against the second lock pendulum arm 32.

[0034] The support assembly 6 includes a first support column 61, a second support column 62, a third support column 63, a fourth support column 64, a fifth support column 65 and a sixth support column 66, the top of which passes through the upper cover plate 41 and the bottom of which is installed on the lower cover plate 42;

[0035] The bottoms of the first support column 61 and the second support column 62 are respectively connected to the left and right sides of the top of the lower cover plate 42;

[0036] The lower side of the third support column 63 is rotatably connected to the first lock swing arm 31, and the lower side of the fourth support column 64 is rotatably connected to the second lock swing arm 32;

[0037] The bottom of the fifth support column 65 passes through the first lock pendulum gear 81 and is connected to the top of the lower cover plate 42. The fifth support column 65 is rotatably connected to the first lock pendulum gear 81. The bottom of the sixth support column 66 passes through the second lock pendulum gear 82 and is connected to the top of the lower cover plate 42. The sixth support column 66 is rotatably connected to the second lock pendulum gear 82.

[0038] The first support column 61 , the second support column 62 , the third support column 63 , the fourth support column 64 , the fifth support column 65 and the sixth support column 66 have the same structure.

[0039] The first support column 61 includes an upper support column 611 and a lower support column 622 . The top of the upper support column 611 passes through the upper cover plate 41 , the bottom of the upper support column 611 is connected to the top of the lower support column 622 , and the bottom of the lower support column 622 is connected to the top of the lower cover plate 42 .

[0040] One end of the first locking swing arm 31 is connected to the side of the first circular ring 311, the inner ring of the first circular ring 311 is rotatably connected to the outer side of the third support column 63, and one end of the second locking swing arm 32 is connected to the side of the second circular ring 321, and the inner ring of the second circular ring 321 is rotatably connected to the outer side of the fourth support column 64.

[0041] The bottom of the first circular ring 311 and the bottom of the second circular ring 321 are both connected to the top of the base 33 , and the bottom of the base 33 is connected to the top of the lower cover plate 42 .

[0042] The height of the base 33 is the same as the thickness of the first pendulum lock gear 81 , and the thickness of the first pendulum lock gear 81 is the same as the thickness of the second pendulum lock gear 82 ;

[0043] The cross section of the base 33 is circular, and the diameter thereof is the same as the diameter of the first ring 311 .

[0044] A first lock swing clamp 71 is inserted into the side of the first lock swing arm 31 , and a second lock swing clamp 72 is inserted into the side of the second lock swing arm 32 . The first lock swing clamp 71 and the second lock swing clamp 72 have the same structure and are symmetrically arranged.

[0045] The first lock swing clamp 71 includes a first insertion rod 711 and a first fixed clamp 712. One end of the first insertion rod 711 passes through the first lock swing arm 31 and is connected to one side of the first fixed clamp 712. The other side of the first fixed clamp 712 is clamped with the lock swing member 5.

[0046] A slot 713 is formed on one side of the first fixing clip 712 close to the lock pendulum 5 , and the slot 713 is engaged with the lock pendulum 5 .

[0047] The supplementary description of the present invention is as follows:

[0048] The remote unlocking pendulum control system and the locking pendulum motor control system are in a signal connection state, otherwise the unlocking pendulum signal of the remote unlocking pendulum control system cannot be remotely transmitted to the locking pendulum motor control system, causing the system to lose the function of remote control.

[0049] Embodiment 1:

[0050] A remote locking pendulum loosening system for a metal zero-length spring relative to a gravimeter, the remote locking pendulum loosening system for a metal zero-length spring relative to a gravimeter comprising a locking pendulum motor 1, a transmission assembly, a locking pendulum positioning member 3, and a fixing assembly 4, the locking pendulum positioning member 3 comprising a first locking pendulum arm 31 and a second locking pendulum arm 32 symmetrically arranged, the fixing assembly 4 comprising an upper cover plate 41 and a lower cover plate 42, the transmission assembly comprising a first locking pendulum gear 81 and a second locking pendulum gear 82; the upper end of the locking pendulum member 5 is arranged through the upper cover plate 41, the lower end of the locking pendulum member 5 is arranged through the lower cover plate 42, the first locking pendulum arm 31 and the second locking pendulum arm 32 are installed on the top of the lower cover plate 42, the locking pendulum member 5 is clamped between the first locking pendulum arm 31 and the second locking pendulum arm 32, the upper cover plate 41 It is connected to the lower cover plate 42 via a supporting assembly 6, and a lock pendulum motor 1 is installed on the top of the upper cover plate 41. The output shaft of the lock pendulum motor 1 passes through the upper cover plate 41 and is connected to the transmission pinion 2. The outer periphery of the transmission pinion 2 is meshed with the first lock pendulum gear 81, and the first lock pendulum gear 81 is meshed with the second lock pendulum gear 82. The first lock pendulum gear 81 and the second lock pendulum gear 82 are movably connected with the lower cover plate 42; a first gear pin 91 is provided on the first lock pendulum gear 81, and the first gear pin 91 rotates clockwise along the first lock pendulum gear 81 and abuts against the first lock pendulum arm 31, and a second gear pin 92 is provided on the second lock pendulum gear 82, and the second gear pin 92 rotates counterclockwise along the second lock pendulum gear 82 and abuts against the second lock pendulum arm 32.

[0051] When applied: The remote pendulum locking system of the metal zero-length spring relative gravimeter includes a pendulum locking method and a pendulum loosening method.

[0052] The locking method is as follows: the control terminal remotely inputs the locking instruction to control the locking motor 1 to rotate counterclockwise, the locking motor 1 rotates counterclockwise to drive the first locking gear 81 to rotate clockwise, the first locking gear 81 drives the second locking gear 82 to rotate counterclockwise, the first locking gear 81 and the second locking gear 82 rotate in the opposite direction at the same time to drive the first gear pin 91 and the second gear pin 92 to rotate, the first gear pin 91 and the second gear pin 92 drive the first locking arm 31 and the second locking arm 32 to approach each other, and finally the first locking clamp 71 and the second locking clamp 72 on the first locking arm 31 and the second locking arm 32 hold the locking member 5, and the locking motor 1 stops rotating at the same time;

[0053] The loosening method is as follows: the control terminal remotely inputs the loosening command to control the lock swing motor 1 to rotate clockwise; the lock swing motor 1 rotates clockwise to drive the first lock swing gear 81 to rotate counterclockwise, and the first lock swing gear 81 drives the second lock swing gear 82 to rotate clockwise, and the first lock swing gear 81 and the second lock swing gear 82 rotate in the opposite direction at the same time to drive the rotation of the first gear pin 91 and the second gear pin 92; the first gear pin 91 and the second gear pin 92 drive the first lock swing arm 31 and the second lock swing arm 32 to move away from each other; finally, the first lock swing clamp 71 and the second lock swing clamp 72 on the first lock swing arm 31 and the second lock swing arm 32 release the lock swing member 5, and the lock swing motor 1 stops rotating after 3 seconds.

[0054] Embodiment 2:

[0055] Embodiment 2 is substantially the same as Embodiment 1, except that:

[0056] The support assembly 6 includes a first support column 61, a second support column 62, a third support column 63, a fourth support column 64, a fifth support column 65 and a sixth support column 66, the top of which passes through the upper cover plate 41 and the bottom is installed on the lower cover plate 42; the bottoms of the first support column 61 and the second support column 62 are respectively connected to the left and right sides of the top of the lower cover plate 42; the lower end side periphery of the third support column 63 is rotatably connected to the first lock swing arm 31, and the lower end side periphery of the fourth support column 64 is rotatably connected to the second lock swing arm 32; the bottom of the fifth support column 65 passes through the first lock swing gear 81 and is connected to the top of the lower cover plate 42, and the fifth support column 6 5 is rotatably connected to the first lock pendulum gear 81, the bottom of the sixth support column 66 passes through the second lock pendulum gear 82 and is connected to the top of the lower cover plate 42, and the sixth support column 66 is rotatably connected to the second lock pendulum gear 82; the first support column 61, the second support column 62, the third support column 63, the fourth support column 64, the fifth support column 65 and the sixth support column 66 have the same structure; the first support column 61 includes an upper support column 611 and a lower support column 622, the top of the upper support column 611 passes through the upper cover plate 41, the bottom of the upper support column 611 is connected to the top of the lower support column 622, and the bottom of the lower support column 622 is connected to the top of the lower cover plate 42.

[0057] When used: through the dispersed arrangement of multiple support columns, the pressure on the upper cover plate 41 is evenly distributed, thereby improving the stability of the entire system.

[0058] Embodiment 3:

[0059] Embodiment 3 is substantially the same as Embodiment 1, except that:

[0060] One end of the first locking swing arm 31 is connected to the side of the first ring 311, the inner ring of the first ring 311 is rotatably connected to the outer periphery of the third support column 63, one end of the second locking swing arm 32 is connected to the side of the second ring 321, the inner ring of the second ring 321 is rotatably connected to the outer periphery of the fourth support column 64; the bottom of the first ring 311 and the bottom of the second ring 321 are both connected to the top of the base 33, and the bottom of the base 33 is connected to the top of the lower cover plate 42; the height of the base 33 is the same as the thickness of the first locking pendulum gear 81, and the thickness of the first locking pendulum gear 81 is the same as the thickness of the second locking pendulum gear 82; the cross-section of the base 33 is circular, and its diameter is the same as the diameter of the first ring 311.

[0061] When used: the setting of the base 33 ensures the stability and smoothness of the rotation of the first lock pendulum gear 81 and the second lock pendulum gear 82, and avoids the occurrence of hysteresis when the first lock pendulum gear 81 and the second lock pendulum gear 82 rotate.

[0062] Embodiment 4:

[0063] Embodiment 4 is substantially the same as Embodiment 1, except that:

[0064] A first lock swing clamp 71 is inserted into the side of the first lock swing arm 31, and a second lock swing clamp 72 is inserted into the side of the second lock swing arm 32. The first lock swing clamp 71 and the second lock swing clamp 72 have the same structure and are symmetrically arranged; the first lock swing clamp 71 includes a first insertion rod 711 and a first fixed clamp 712, one end of the first insertion rod 711 passes through the first lock swing arm 31 and is connected to one side of the first fixed clamp 712, and the other side of the first fixed clamp 712 is clamped with the lock swing piece 5; a clamping groove 713 is provided on the side of the first fixed clamp 712 close to the lock swing piece 5, and the clamping groove 713 is clamped with the lock swing piece 5.

[0065] When in use: the height of the first lock swing clamp 71 and the second lock swing clamp 72 is adapted to the height of the locked lock swing member 5, i.e., the metal zero-length spring;

[0066] When the upper cover plate 41 and the lower cover plate 42 are installed in the gravimeter, the verticality between them and the lock pendulum 5 must be ensured, otherwise the lock pendulum 5 will be tilted when the first lock pendulum clamp 71 and the second lock pendulum clamp 72 clamp the lock pendulum 5, which is prone to permanent damage.

[0067] When the upper cover plate 41 and the lower cover plate 42 are installed in the gravimeter, care must be taken to ensure that they are concentric with the lock pendulum 5. Otherwise, when the first lock pendulum clamp 71 and the second lock pendulum clamp 72 clamp the lock pendulum 5, it will cause the lock pendulum 5 to move horizontally. In serious cases, the lock pendulum clamp may not be able to completely release the lock pendulum.

[0068] Embodiment 5:

[0069] Embodiment 5 is substantially the same as Embodiment 1, except that:

[0070] Preferably, a through hole 43 for passing the lock pendulum 5 is opened on the top of the upper cover plate 41, and a protective cover is arranged on the outer side of the upper cover plate 41 and the lower cover plate 42 to avoid interference from rain and dust in the outdoor environment.

[0071] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. A remote locking pendulum system for a metal zero-length spring relative gravimeter, characterized in that: The remote pendulum locking release system of the metal zero-length spring relative gravimeter comprises a pendulum locking motor (1), a transmission assembly, a pendulum locking positioning member (3), and a fixing assembly (4); the pendulum locking positioning member (3) comprises a first pendulum locking arm (31) and a second pendulum locking arm (32) which are symmetrically arranged; the fixing assembly (4) comprises an upper cover plate (41) and a lower cover plate (42); and the transmission assembly comprises a first pendulum locking gear (81) and a second pendulum locking gear (82); The upper end of the lock swing member (5) is arranged through the upper cover plate (41), and the lower end of the lock swing member (5) is arranged through the lower cover plate (42). The top of the lower cover plate (42) is provided with a first lock swing arm (31) and a second lock swing arm (32). The lock swing member (5) is clamped and arranged between the first lock swing arm (31) and the second lock swing arm (32). The upper cover plate (41) and the lower cover plate (42) are connected via a support assembly (6). A lock swing motor (1) is installed on the top of the upper cover plate (41). The lock swing motor (1) is connected to a control terminal signal. The output shaft of the lock swing motor (1) passes through the upper cover plate (41) and is transmission-connected to a transmission pinion (2). The outer periphery of the transmission pinion (2) is meshed with a first lock swing gear (81). The first lock swing gear (81) is meshed with a second lock swing gear (82). The first lock swing gear (81) and the second lock swing gear (82) are movably connected to the lower cover plate (42). The first lock pendulum gear (81) is provided with a first gear pin (91), the first gear pin (91) rotates clockwise along the first lock pendulum gear (81) to abut against the first lock pendulum arm (31), and the second lock pendulum gear (82) is provided with a second gear pin (92), the second gear pin (92) rotates counterclockwise along the second lock pendulum gear (82) to abut against the second lock pendulum arm (32).

2. A remote locking pendulum system for a metal zero-length spring relative gravimeter according to claim 1, characterized in that: The support assembly (6) comprises a first support column (61), a second support column (62), a third support column (63), a fourth support column (64), a fifth support column (65) and a sixth support column (66), the top of which passes through the upper cover plate (41) and the bottom of which is mounted on the lower cover plate (42); The bottoms of the first support column (61) and the second support column (62) are respectively connected to the left and right sides of the top of the lower cover plate (42); The side periphery of the lower end of the third support column (63) is rotatably connected to the first locking swing arm (31), and the side periphery of the lower end of the fourth support column (64) is rotatably connected to the second locking swing arm (32); The bottom of the fifth support column (65) passes through the first pendulum lock gear (81) and is connected to the top of the lower cover plate (42); the fifth support column (65) is rotationally connected to the first pendulum lock gear (81); the bottom of the sixth support column (66) passes through the second pendulum lock gear (82) and is connected to the top of the lower cover plate (42); the sixth support column (66) is rotationally connected to the second pendulum lock gear (82).

3. A remote locking pendulum system for a metal zero-length spring relative gravimeter according to claim 2, characterized in that: The first support column (61), the second support column (62), the third support column (63), the fourth support column (64), the fifth support column (65) and the sixth support column (66) have the same structure.

4. A remote locking pendulum system for a metal zero-length spring relative gravimeter according to claim 3, characterized in that: The first support column (61) comprises an upper support column (611) and a lower support column (622); the top of the upper support column (611) passes through the upper cover plate (41); the bottom of the upper support column (611) is connected to the top of the lower support column (622); and the bottom of the lower support column (622) is connected to the top of the lower cover plate (42).

5. The remote locking pendulum system of the metal zero-length spring relative gravimeter according to claim 2 is characterized in that: One end of the first locking swing arm (31) is connected to the side surface of the first circular ring (311), the inner ring of the first circular ring (311) is rotatably connected to the outer periphery of the third support column (63), and one end of the second locking swing arm (32) is connected to the side surface of the second circular ring (321), and the inner ring of the second circular ring (321) is rotatably connected to the outer periphery of the fourth support column (64).

6. A remote locking pendulum system for a metal zero-length spring relative gravimeter according to claim 5, characterized in that: The bottom of the first circular ring (311) and the bottom of the second circular ring (321) are both connected to the top of the base (33), and the bottom of the base (33) is connected to the top of the lower cover plate (42).

7. A remote locking pendulum system for a metal zero-length spring relative gravimeter according to claim 6, characterized in that: The height of the base (33) is the same as the thickness of the first pendulum-locking gear (81), and the thickness of the first pendulum-locking gear (81) is the same as the thickness of the second pendulum-locking gear (82); The cross section of the base (33) is circular, and its diameter is the same as the diameter of the first circular ring (311).

8. The remote locking pendulum system of a metal zero-length spring relative gravimeter according to claim 1, characterized in that: A first lock swing clamp (71) is inserted into the side surface of the first lock swing arm (31), and a second lock swing clamp (72) is inserted into the side surface of the second lock swing arm (32). The first lock swing clamp (71) and the second lock swing clamp (72) have the same structure and are symmetrically arranged.

9. A remote locking pendulum system for a metal zero-length spring relative gravimeter according to claim 8, characterized in that: The first lock swing clamp (71) comprises a first insertion rod (711) and a first fixing clamp (712), one end of the first insertion rod (711) passes through the first lock swing arm (31) and is connected to one side of the first fixing clamp (712), and the other side of the first fixing clamp (712) is clamped to the lock swing member (5).

10. A remote locking pendulum system for a metal zero-length spring relative gravimeter according to claim 9, characterized in that: A clamping groove (713) is provided on one side of the first fixing clip (712) close to the lock swing piece (5), and the clamping groove (713) is clamped with the lock swing piece (5).

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