Efficient damping military vehicle seat suspension

Abstract

The invention discloses an efficient damping military vehicle seat suspension, and belongs to the technical field of vehicle seats, the efficient damping military vehicle seat suspension comprises a lower fixing seat fixed in a cab and an upper mounting seat fixed below a seat, a tray is horizontally mounted between the bottom of the upper mounting seat and the lower fixing seat, and a first ball bead is rotatably mounted in the middle of the tray; and a circular through hole matched with the first ball bead is formed in the tray. A base plate capable of sliding up and down is fixed to the bottom end of a first vertical spring, and a vertical rigid adjusting mechanism composed of a protective shell, a screw, a vertical rod, a guide groove, a rack, a sliding rod, a reset spring, a gear, a sliding groove, a sliding block and a push rod is matched, so that when the top pressure of the upper mounting base changes, the top pressure of the upper mounting base is increased, and the top pressure of the upper mounting base is adjusted. And the horizontal plane where the bottom end of the first vertical spring is located is automatically lifted, then the rigidity of the device during vertical damping is adjusted in a self-adaptive mode, manual control is not needed, and practicability is higher.

Description

Technical Field

[0001] The invention relates to a seat suspension, in particular to a military vehicle seat suspension with high-efficiency vibration reduction, belonging to the technical field of vehicle seats. Background Art

[0002] Car seat suspension is an important part of car seats. It plays a key role in improving riding comfort, protecting passenger health and optimizing driving experience.

[0003] In the prior art, for example, the invention with application number 201910055322.9 discloses a parallel semi-active multi-dimensional vibration-damping seat suspension for engineering vehicles. In order to solve the problem that ordinary engineering vehicle seats cannot reduce low-frequency vibrations in the pitch and roll directions, the suspension includes a static platform, a plurality of vibration-damping branches, a plurality of damping springs, a dynamic platform, and a seat body, thereby realizing multi-dimensional vibration reduction of engineering vehicle seats, reducing pitch and roll vibrations, enhancing the driver's operating stability, and improving driving safety.

[0004] Similar to the above application, there are still some shortcomings:

[0005] Although it can reduce vibration in vertical, pitch and roll, it is unable to automatically adjust the overall rigidity of the suspension according to the driver's own weight, the amplitude of up and down shaking, and the amplitude of pitch and roll vibration during use. The shock absorption effect is poor and the practicality is low.

[0006] Therefore, a military vehicle seat suspension with high efficiency and vibration reduction is designed to optimize the above problems. Summary of the invention

[0007] The main purpose of the present invention is to provide a military vehicle seat suspension with high-efficiency shock absorption, by fixing a pad that can slide up and down at the bottom end of the first vertical spring, and then cooperating with a vertical rigidity adjustment mechanism composed of a protective shell, a screw, a vertical rod, a guide groove, a rack, a slide rod, a return spring, a gear, a slide groove, a slider, and a push rod. When the pressure on the top of the upper mounting seat changes, as the pressure on the top of the upper mounting seat increases, the horizontal plane where the bottom end of the first vertical spring is located is automatically raised, thereby adaptively adjusting the rigidity of the device during vertical shock absorption, without the need for manual control, and having higher practicality. By rotatably installing the first ball at the bottom of the upper mounting seat inside the tray, the upper mounting seat can rotate around the X-axis and the Y-axis with the center of the circle of the first ball as the axis point, thereby pitching and During roll, the horizontal spring is used for preliminary shock absorption, and then the oblique vibration rigidity adjustment mechanism composed of the mounting groove, the fixing block, the annular partition, the second vertical spring, the gear, the vertical rack, the horizontal rack, and the pulling wire can be used to pull the pulling wire and cooperate with the transmission of the gear rack to self-adjust the rigidity under the tilt vibration condition when the upper mounting seat rotates around the X-axis and the Y-axis to perform secondary vibration absorption. In addition, the shield can also rotate around the second ball, and the mounting seat can also rotate around the X-axis and the Y-axis with the center of the second ball as the axis point. When the oblique vibration intensity increases again, the first vertical spring and the vertical rigidity adjustment mechanism are used for further vibration absorption. Through multiple vibration absorption, the vibration absorption effect during pitch and roll during the use of the device is improved, and the practicality is higher.

[0008] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0009] The invention discloses a military vehicle seat suspension with high efficiency and vibration reduction, comprising a lower fixed seat fixed inside a cab and an upper mounting seat fixed below the seat, a tray is horizontally mounted between the bottom of the upper mounting seat and the lower fixed seat, a first ball is rotatably mounted at the middle position of the tray, a circular through hole matched with the first ball is opened on the tray, the top and bottom of the first ball are both provided with horizontal planes, the horizontal plane at the top of the first ball is fixedly connected to the upper mounting seat, a shield is fixed to the bottom of the tray, a horizontal spring is evenly and horizontally mounted on the inner side of the shield along the circumferential direction, a connecting piece is provided between the end of the horizontal spring and the horizontal plane below the first ball, an oblique vibration rigidity adjustment mechanism is provided for adjusting the tilt resistance of the upper mounting seat evenly at the top of the tray, a shock absorber is vertically fixed at the middle position of the top of the lower fixed seat, a second ball is fixed to the top of the shock absorber, a spherical groove matched with the second ball is provided at the bottom of the shield, a first vertical spring is evenly mounted between the bottom of the tray and the lower fixed seat, and a vertical rigidity adjustment mechanism is provided at the bottom of the first vertical spring.

[0010] Preferably, the connecting member comprises a sliding sleeve and a polygonal column, the polygonal column is vertically fixed on a horizontal plane below the first ball, a sliding sleeve is sleeved on the outer side of the polygonal column, the sliding sleeve slides up and down along the length direction of the polygonal column, and the ends of the horizontal spring are fixed on the outer side of the sliding sleeve.

[0011] Preferably: the oblique vibration rigidity adjustment mechanism includes a mounting groove, a fixed block, an annular partition, a second vertical spring and a lifting assembly, the mounting groove is opened in an annular array on the outside of the top of the tray, an annular partition is fixed to the inner top of the mounting groove, a fixed block is provided on the top of the annular partition, the bottom of the fixed block is fitted between the annular partition, the second vertical spring is fixed between the top of the fixed block and the upper mounting seat, and a lifting assembly is provided on the inner bottom of the mounting groove for controlling the upward movement of the fixed block to compress the second vertical spring.

[0012] Preferably: the lifting assembly includes a first gear, a vertical rack, a horizontal rack and a pulling wire, the first gear is rotatably installed inside the mounting groove, the side of the first gear is vertically meshed with a vertical rack, the top of the first gear is horizontally meshed with a horizontal rack, one end of the horizontal rack is fixed with a pulling wire, the pulling wire slides and extends to the inside of the shield and passes through the inside of the horizontal spring and is fixedly connected to the sliding sleeve.

[0013] Preferably: the vertical rigidity adjustment mechanism includes a pad and a lifting assembly, the pad is attached to the top of the lower fixed seat, and the top of the pad is fixedly connected to the bottom end of the first vertical spring, and the end of the pad is provided with a lifting assembly for controlling the vertical movement of the pad.

[0014] Preferably: the lifting assembly includes a protective shell, a screw and a rotating assembly, the protective shell is fixed to the outer side of the top of the lower fixed seat, the inner top of the protective shell is evenly rotated and installed with a screw, the screw is threadedly connected to the pad, and the bottom end of the pad is provided with a rotating assembly.

[0015] Preferably: a vertical rod is vertically arranged on the side of the screw rod and located at the inner top of the protective shell, and the vertical rod is slidably connected to the pad.

[0016] Preferably: the rotating assembly includes a guide groove, a transmission rack, a return spring, a second gear and a push assembly, a guide groove is provided at the top of the lower fixed seat and below the pad, a transmission rack is slidably arranged inside the guide groove along the length direction, a return spring is arranged between the transmission rack and the outer end of the guide groove, a second gear is installed at the bottom end of the screw and inside the guide groove, and a push assembly for controlling the linear movement of the transmission rack is provided below the shield.

[0017] Preferably, a sliding rod is fixed between both ends of the guide groove, and the sliding rod passes through the interior of the reset spring and is slidably connected with the transmission rack.

[0018] Preferably: the push assembly includes a slide groove, a slider and a push rod, the bottom of the shield is provided with a slide groove along the length direction of the guide groove, the inside of the slide groove is slidably installed with a slider, and a push rod is hingedly installed between the bottom end of the slider and the top of the transmission rack.

[0019] The beneficial effects of the present invention are:

[0020] The invention provides a military vehicle seat suspension with high efficiency shock absorption. A pad that can slide up and down is fixed at the bottom end of a first vertical spring, and a vertical rigidity adjustment mechanism composed of a protective shell, a screw rod, a vertical rod, a guide groove, a rack, a slide rod, a return spring, a gear, a slide groove, a slide block, and a push rod is used. When the pressure on the top of the upper mounting seat changes, the horizontal plane where the bottom end of the first vertical spring is located is automatically raised as the pressure on the top of the upper mounting seat increases, thereby adaptively adjusting the rigidity of the device during vertical shock absorption, without the need for manual control, and having higher practicality.

[0021] By rotating and installing the first ball at the bottom of the upper mounting seat inside the tray, the upper mounting seat can rotate around the X-axis and the Y-axis with the center of the first ball as the axis point, and then use the horizontal spring to perform preliminary shock absorption during pitch and roll, and then use the oblique vibration rigidity adjustment mechanism composed of the mounting groove, the fixing block, the annular partition, the second vertical spring, the gear, the vertical rack, the horizontal rack, and the pulling wire to form an oblique vibration rigidity adjustment mechanism, when the upper mounting seat rotates around the X-axis and the Y-axis with a large amplitude, by pulling the pulling wire and cooperating with the transmission of the gear rack, the rigidity in the case of tilt vibration can be self-adjusted to perform secondary vibration reduction. In addition, the shield can also rotate around the second ball, and the mounting seat can also rotate around the X-axis and the Y-axis with the center of the second ball as the axis point. When the oblique vibration intensity increases again, the first vertical spring and the vertical rigidity adjustment mechanism are used to perform vibration reduction again. Through multiple vibration reductions, the vibration reduction effect during pitch and roll during use of the device is improved, and the practicality is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front cross-sectional view of a preferred embodiment of a military vehicle seat suspension with high efficiency vibration reduction of the present invention;

[0023] Figure 2 It is a front cross-sectional structural diagram of a preferred embodiment of a military vehicle seat suspension with high efficiency vibration reduction of the present invention;

[0024] Figure 3 A preferred embodiment of a military vehicle seat suspension with high efficiency vibration reduction according to the present invention Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 A preferred embodiment of a military vehicle seat suspension with high efficiency vibration reduction according to the present invention Figure 2 Enlarged view of point B in the middle;

[0026] Figure 5 A preferred embodiment of a military vehicle seat suspension with high efficiency vibration reduction according to the present invention Figure 2 Enlarged view of point C in the middle;

[0027] Figure 6 A structural diagram of the top of a tray of a preferred embodiment of a military vehicle seat suspension with high efficiency and vibration reduction according to the present invention;

[0028] Figure 7 It is a cross-sectional view of a shield of a preferred embodiment of a military vehicle seat suspension with high efficiency vibration reduction of the present invention;

[0029] Figure 8 The present invention is a front view of a preferred embodiment of a military vehicle seat suspension with high efficiency and vibration reduction.

[0030] In the figure: 1. lower fixed seat; 2. upper mounting seat; 3. tray; 4. circular through hole; 5. first ball; 6. horizontal plane; 7. shield; 8. horizontal spring; 9. oblique vibration rigidity adjustment mechanism; 10. shock absorber; 11. second ball; 12. spherical groove; 13. first vertical spring; 14. vertical rigidity adjustment mechanism; 15. sliding sleeve; 16. polygonal column; 17. mounting groove; 18. fixing block; 19. annular partition; 20. second vertical spring; 21. first gear; 22. vertical rack; 23. horizontal rack; 24. pulling wire; 25. pad; 26. protective shell; 27. screw; 28. vertical rod; 29. ​​guide groove; 30. transmission rack; 31. slide rod; 32. reset spring; 33. second gear; 34. slide groove; 35. slider; 36. push rod. DETAILED DESCRIPTION

[0031] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0032] like Figure 1-Figure 8As shown, this embodiment provides a military vehicle seat suspension with high efficiency and vibration reduction, comprising a lower fixing seat 1 fixed inside a cab and an upper mounting seat 2 fixed below the seat, a tray 3 is horizontally mounted between the bottom of the upper mounting seat 2 and the lower fixing seat 1, a first ball 5 is rotatably mounted at the middle position of the tray 3, a circular through hole 4 is provided on the tray 3 to match the first ball 5, a horizontal surface 6 is provided on the top and bottom of the first ball 5, the horizontal surface 6 on the top of the first ball 5 is fixedly connected to the upper mounting seat 2, a shield 7 is fixed to the bottom of the tray 3, and the inner side of the shield 7 is uniformly circumferentially A horizontal spring 8 is installed horizontally, and a connecting piece is provided between the end of the horizontal spring 8 and the horizontal plane 6 below the first ball 5. The top of the tray 3 is evenly matched with the oblique vibration rigidity adjustment mechanism 9 for adjusting the tilt resistance of the upper mounting seat 2. A shock absorber 10 is vertically fixed at the middle position of the top of the lower fixed seat 1, and a second ball 11 is fixed to the top of the shock absorber 10. A spherical groove 12 cooperating with the second ball 11 is provided at the bottom of the shield 7. A first vertical spring 13 is evenly installed between the bottom of the tray 3 and the lower fixed seat 1, and a vertical rigidity adjustment mechanism 14 is provided at the bottom of the first vertical spring 13.

[0033] The overall working principle: when in use, the seat is fixed to the top of the upper mounting seat 2. After the driver sits on the seat, due to the different weights of the drivers, when the driver is heavier, or the downward pressure applied to the top of the upper mounting seat 2 during vibration causes the compression of the first vertical spring 13, after exceeding the set amount of the first vertical spring 13, the vertical rigidity adjustment mechanism 14 will be automatically controlled to start, and the bottom end of the first vertical spring 13 will be compressed upward to ensure the rigidity during vertical vibration reduction and avoid large-scale shaking during vibration reduction. In addition, since the upper mounting seat 2 can use the center of the circle of the first ball 5 as the axis point, it can also be used as the center point of the circle of the first ball 5. The center of the second ball 11 is the axis point, and it rotates around the X-axis and the Y-axis. When the driver pitches and rolls during driving, if the tilt angle is small, only the horizontal spring 8 can be used for vibration reduction. When the tilt angle gradually increases, the oblique vibration rigidity adjustment mechanism 9 will be used to increase the resistance of the upper mounting seat 2 when it is tilted. When the pitch and roll increase again, the first vertical spring 13 can be used for vibration reduction at the same time. Finally, when the pitch and roll exceed the set amount of the first vertical spring 13, the vertical rigidity adjustment mechanism 14 can be used for vibration reduction. The mutual cooperation between the multi-stage vibration reduction can have a good vibration reduction effect at different stages.

[0034] In this embodiment, the connecting member includes a sleeve 15 and a polygonal column 16. The polygonal column 16 is vertically fixed on the horizontal plane 6 below the first ball 5. The outer side of the polygonal column 16 is sleeved with the sleeve 15. The sleeve 15 slides up and down along the length direction of the polygonal column 16. The ends of the horizontal spring 8 are fixed on the outer side of the sleeve 15.

[0035] Local working principle: during the rotation of the first ball 5, due to the limiting effect of the sleeve 15 on the polygonal column 16, the first ball 5 will not rotate around the Z axis. During the rotation of the first ball 5 around the X axis and the Y axis, the force applied to the sleeve 15 by the polygonal column 16 will change the position of the sleeve 15, and the horizontal spring 8 will be used for vibration reduction.

[0036] In this embodiment, the oblique vibration rigidity adjustment mechanism 9 includes a mounting groove 17, a fixed block 18, an annular partition 19, a second vertical spring 20 and a lifting assembly. The mounting groove 17 is opened in an annular array on the outer side of the top of the tray 3, and an annular partition 19 is fixed to the inner top of the mounting groove 17. A fixing block 18 is provided on the top of the annular partition 19. The bottom of the fixing block 18 is fitted with the annular partition 19, and the second vertical spring 20 is fixed between the top of the fixing block 18 and the upper mounting seat 2. A lifting assembly for controlling the upward movement of the fixed block 18 to compress the second vertical spring 20 is provided at the inner bottom of the mounting groove 17.

[0037] Local working principle: Since multiple groups of second vertical springs 20 are added between the bottom of the upper mounting seat 2 and the tray 3, the resistance of the seat during pitch and roll can be increased. When the pitch or roll angle is large, the lifting assembly is used to apply an upward force from the bottom end of the second vertical spring 20, and the fixed block 18 is used to compress the second vertical spring 20 to further increase the resistance when tilting toward that position, so as to avoid excessive rotation of the first ball 5 around the X-axis or Y-axis, effectively ensuring the stability of the driver's body.

[0038] In this embodiment, the lifting assembly includes a first gear 21, a vertical rack 22, a horizontal rack 23 and a pulling wire 24. The first gear 21 is rotatably installed inside the mounting groove 17. The side of the first gear 21 is vertically meshed with the vertical rack 22. When there is no force applied, the bottom end of the vertical rack 22 is in contact with the bottom end of the mounting groove 17 in the initial state, and the top end of the vertical rack 22 is not in contact with the fixed block 18. The top of the first gear 21 is horizontally meshed with the horizontal rack 23, and a pulling wire 24 is fixed to one end of the horizontal rack 23. The pulling wire 24 slides and extends to the inside of the shield 7 and passes through the inside of the horizontal spring 8 to be fixedly connected to the sliding sleeve 15.

[0039] Local working principle: When the pitch or roll angle is large, the polygonal column 16 will control the sleeve 15 to tilt at a larger angle, and the position of the sleeve 15 will be away from the lower tilt side of the upper mounting seat 2. The sleeve 15 controls the horizontal rack 23 to move toward the direction of the first ball 5 by pulling the steel wire 24. The horizontal rack 23 controls the rotation of the first gear 21, and the first gear 21 controls the upward movement of the vertical rack 22, passing the vertical rack 22 through the middle of the annular partition 19, applying an upward thrust to the fixed block 18, and applying an upward force to the second vertical spring 20 to increase the resistance when the seat is tilted to avoid excessive tilting.

[0040] In this embodiment, the vertical rigidity adjustment mechanism 14 includes a pad 25 and a lifting assembly. The pad 25 is attached to the top of the lower fixed seat 1, and the top of the pad 25 is fixedly connected to the bottom end of the first vertical spring 13. The end of the pad 25 is provided with a lifting assembly for controlling the vertical movement of the pad 25.

[0041] Local working principle: When the driver is heavy, or the downward pressure applied to the top of the upper mounting seat 2 during vibration causes the compression of the first vertical spring 13 to exceed the set value of the first vertical spring 13, the lifting assembly will automatically control the pad 25 to move upward, and apply an upward force to the bottom end of the first vertical spring 13 to increase the resistance during downward movement and reduce the amplitude of vibration.

[0042] In this embodiment, the lifting assembly includes a protective shell 26, a screw 27 and a rotating assembly. The protective shell 26 is fixed to the outer side of the top of the lower fixed base 1. The inner top of the protective shell 26 is evenly rotated and installed with a screw 27. The screw 27 is threadedly connected to the pad 25, and a rotating assembly is provided at the bottom end of the pad 25.

[0043] Partial working principle: in the process of controlling the pad 25 to rise, the rotation of the screw 27 is controlled by the rotating assembly, and the screw 27 is used to drive the pad 25 to move vertically.

[0044] In this embodiment, a vertical rod 28 is vertically arranged on the side of the screw rod 27 and located at the inner top of the protective shell 26 , and the vertical rod 28 is slidably connected to the backing plate 25 .

[0045] Partial working principle: The pad 25 is limited by the vertical rod 28, so the pad 25 can only move vertically.

[0046] In this embodiment, the rotating assembly includes a guide groove 29, a transmission rack 30, a return spring 32, a second gear 33 and a push assembly. A guide groove 29 is provided at the top of the lower fixed seat 1 and below the pad 25. A transmission rack 30 is slidably arranged inside the guide groove 29 along the length direction. A return spring 32 is arranged between the transmission rack 30 and the outer end of the guide groove 29. The bottom end of the screw 27 is located inside the guide groove 29 and a second gear 33 is installed. In the initial state, a spacing is left between the transmission rack 30 and the second gear 33. A push assembly for controlling the linear movement of the transmission rack 30 is provided below the shield 7.

[0047] Local working principle: When the driver is heavy, or the downward pressure applied to the top of the upper mounting seat 2 during vibration causes the compression of the first vertical spring 13 to exceed the set value of the first vertical spring 13, the push assembly will be used to control the transmission rack 30 to move toward the second gear 33 and mesh with the second gear 33. As the force on the top of the upper mounting seat 2 increases, the distance moved by the transmission rack 30 will increase, and the transmission rack 30 will control the rotation of the second gear 33, and the second gear 33 will drive the screw 27 to rotate.

[0048] In this embodiment, a sliding rod 31 is fixed between both ends of the guide groove 29 . The sliding rod 31 passes through the interior of the return spring 32 and is slidably connected to the transmission rack 30 .

[0049] Partial working principle: The use of the sliding rod 31 can ensure the linear movement of the transmission rack 30.

[0050] In this embodiment, the push assembly includes a slide groove 34, a slider 35 and a push rod 36. The bottom of the shield 7 is provided with a slide groove 34 along the length direction of the guide groove 29. The inside of the slide groove 34 is slidably installed with a slider 35. The slider 35 is initially located at the end away from the second ball 11. A push rod 36 is hingedly installed between the bottom end of the slider 35 and the top of the transmission rack 30.

[0051] Partial working principle: When the downward pressure applied to the seat is large, the shield 7 will move downward, and the slider 35 will move toward the other end of the slide groove 34. After moving to the other end, the push rod 36 will apply a thrust to the transmission rack 30 to control the movement of the transmission rack 30.

[0052] The above description is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. A military vehicle seat suspension with high efficiency and vibration reduction, comprising a lower fixing seat (1) fixed inside a cab and an upper mounting seat (2) fixed below the seat, characterized in that: A tray (3) is horizontally installed between the bottom of the upper mounting seat (2) and the lower fixed seat (1), a first ball (5) is rotatably installed at the middle position of the tray (3), a circular through hole (4) matched with the first ball (5) is opened on the tray (3), a horizontal surface (6) is provided at the top and bottom of the first ball (5), the horizontal surface (6) at the top of the first ball (5) is fixedly connected to the upper mounting seat (2), a shield (7) is fixed at the bottom of the tray (3), a horizontal spring (8) is evenly installed horizontally on the inner side of the shield (7) along the circumferential direction, and the end of the horizontal spring (8) is connected to the first ball (5). A connecting piece is provided between the lower horizontal plane (6); the top of the tray (3) is evenly connected to the upper mounting seat (2) for adjusting the tilt resistance of the oblique vibration rigidity adjustment mechanism (9); a shock absorber (10) is vertically fixed at the middle position of the top of the lower fixing seat (1); a second ball (11) is fixed to the top of the shock absorber (10); a spherical groove (12) matched with the second ball (11) is provided at the bottom of the shield (7); a first vertical spring (13) is evenly installed between the bottom of the tray (3) and the lower fixing seat (1); and a vertical rigidity adjustment mechanism (14) is provided at the bottom of each of the first vertical springs (13).

2. The high-efficiency vibration-reducing military vehicle seat suspension according to claim 1 is characterized in that: The connecting member comprises a sliding sleeve (15) and a polygonal column (16). The polygonal column (16) is vertically fixed on a horizontal plane (6) below the first ball (5). The sliding sleeve (15) is sleeved on the outer side of the polygonal column (16). The sliding sleeve (15) slides up and down along the length direction of the polygonal column (16). The ends of the horizontal spring (8) are fixed on the outer side of the sliding sleeve (15).

3. The high-efficiency vibration-reducing military vehicle seat suspension according to claim 2 is characterized in that: The oblique vibration rigidity adjustment mechanism (9) comprises a mounting groove (17), a fixing block (18), an annular partition (19), a second vertical spring (20) and a lifting assembly. The mounting groove (17) is arranged in an annular array on the outer side of the top of the tray (3). An annular partition (19) is fixed to the inner top of the mounting groove (17). A fixing block (18) is arranged on the top of the annular partition (19). The bottom of the fixing block (18) is fitted with the annular partition (19). A second vertical spring (20) is fixed between the top of the fixing block (18) and the upper mounting seat (2). A lifting assembly for controlling the fixing block (18) to move upward to compress the second vertical spring (20) is arranged on the inner bottom of the mounting groove (17).

4. The high-efficiency vibration-reducing military vehicle seat suspension according to claim 3 is characterized in that: The lifting assembly comprises a first gear (21), a vertical rack (22), a horizontal rack (23) and a pulling wire (24); the first gear (21) is rotatably mounted inside the mounting groove (17); the side of the first gear (21) is vertically meshed with the vertical rack (22); the top of the first gear (21) is horizontally meshed with the horizontal rack (23); one end of the horizontal rack (23) is fixed with the pulling wire (24); the pulling wire (24) slidably extends to the inside of the protective cover (7) and passes through the inside of the horizontal spring (8) to be fixedly connected with the sliding sleeve (15).

5. A military vehicle seat suspension with high efficiency vibration reduction according to any one of claims 1 to 4, characterized in that: The vertical rigidity adjustment mechanism (14) comprises a pad (25) and a lifting assembly, wherein the pad (25) is attached to the top of the lower fixed seat (1), and the top of the pad (25) is fixedly connected to the bottom end of the first vertical spring (13), and the end of the pad (25) is provided with a lifting assembly for controlling the vertical movement of the pad (25).

6. The high-efficiency vibration-reducing military vehicle seat suspension according to claim 5, characterized in that: The lifting assembly comprises a protective shell (26), a screw rod (27) and a rotating assembly. The protective shell (26) is fixed to the outer side of the top of the lower fixed seat (1). The inner top of the protective shell (26) is evenly rotated and installed with a screw rod (27). The screw rod (27) is threadedly connected to the backing plate (25). The bottom end of the backing plate (25) is provided with a rotating assembly.

7. The high-efficiency vibration-reducing military vehicle seat suspension according to claim 6, characterized in that: A vertical rod (28) is vertically arranged on the side of the screw rod (27) and located at the inner top of the protective shell (26), and the vertical rod (28) is slidably connected to the backing plate (25).

8. The high-efficiency vibration-reducing military vehicle seat suspension according to claim 7, characterized in that: The rotating assembly comprises a guide groove (29), a transmission rack (30), a return spring (32), a second gear (33) and a push assembly. The top of the lower fixed seat (1) and the lower part of the pad (25) are provided with a guide groove (29). The transmission rack (30) is slidably arranged inside the guide groove (29) along the length direction. A return spring (32) is arranged between the transmission rack (30) and the outer end of the guide groove (29). The bottom end of the screw rod (27) and the inner part of the guide groove (29) are provided with a second gear (33). The lower part of the shield (7) is provided with a push assembly for controlling the linear movement of the transmission rack (30).

9. The high-efficiency vibration-reducing military vehicle seat suspension according to claim 8, characterized in that: A sliding rod (31) is fixed between both ends of the guide groove (29), and the sliding rod (31) passes through the interior of the return spring (32) and is slidably connected to the transmission rack (30).

10. The high-efficiency vibration-reducing military vehicle seat suspension according to claim 9, characterized in that: The horizontal push assembly comprises a slide groove (34), a slider (35) and a push rod (36). The bottom of the shield (7) is provided with a slide groove (34) along the length direction of the guide groove (29). The inside of the slide groove (34) is slidably mounted with a slider (35). The push rod (36) is hingedly mounted between the bottom end of the slider (35) and the top of the transmission rack (30).

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