A dual working condition load switching device of a mobile radar emergency command vehicle

Abstract

The application provides a double-working-condition bearing switching device of a mobile radar emergency command vehicle, belongs to the technical field of vehicle-mounted equipment installation and bearing, and solves the problem that the mobile radar transportation vibration isolation and parking operation rigid support cannot be considered simultaneously. The device comprises a special bearing frame, a radar installation platform, a vibration isolation assembly, a rigid bypass assembly and a support leveling assembly. The rigid bypass assembly comprises a fixed bearing seat, an upper joint seat, a wedge-shaped sliding block and a working stop. During transportation, the wedge-shaped sliding block exits the bearing area, and the radar installation platform is borne by the vibration isolation assembly; during operation, the wedge-shaped sliding block enters the bearing area, and the load is transmitted to the ground through the rigid bypass assembly and the support leveling assembly, and the working stop bears the wedge-shaped sliding block return force. The device can realize switching of the two bearing paths without removing the vibration isolation assembly.

Description

Technical Field

[0001] This invention relates to the field of vehicle-mounted equipment installation and support, specifically to a mechanical device for switching the load-bearing path between vibration isolation and rigid support states in a mobile radar emergency command vehicle. Background Technology

[0002] With the increasing demand for mobile radar equipment in emergency command and on-site detection scenarios, vehicle-mounted radar typically needs to be installed on mobile platforms for rapid deployment. Due to the vibration and impact loads during vehicle transport, and the need for high installation stability of the radar equipment during operation, existing vehicle-mounted radar installation structures must balance vibration isolation requirements during transport and support requirements during operation. Current technologies typically use vibration isolation components to support the radar mounting platform, reducing the impact of vibration loads on the radar equipment during vehicle movement; when on-site operations are required, support structures are used to support the vehicle or equipment to improve stability during operation. Existing solutions primarily address issues such as lifting, retrieval, positioning, and transport locking of the radar equipment, but do not design for switching the load-bearing path between the transport vibration isolation state and the rigid support state during parking operations while retaining vibration isolation components.

[0003] In practical applications, mobile radar relies on vibration isolation structures to reduce the impact of external vibrations while the vehicle is in motion. After the radar is deployed and parked, the loads generated during operation need to be transferred directly to the ground as much as possible to minimize the impact of the relative movement of the mounting platform on the equipment's operation. If existing technology allows the radar mounting platform to continuously bear the load on the vibration isolation components, the loads generated during operation will still act on the vibration isolation structure, posing a risk of platform movement. If the vibration isolation components are removed or temporary rigid supports are added, additional disassembly and assembly operations are required, which is not conducive to rapid deployment and reuse of the equipment.

[0004] Furthermore, when using mechanical bypass for load switching, it is necessary to address issues such as the coordination between multiple load engagement points, the motion guidance of the switching mechanism, and the transmission of load reaction forces. In existing mechanical structures, if the load-bearing components are affected by off-center loading and experience motion deviation, it may affect the switching process; if the drive mechanism simultaneously bears the long-term operational load, it will increase the stress on the drive components and affect the reliable operation of the load switching structure.

[0005] Therefore, existing technologies have the drawback that mobile radar installation platforms cannot reliably switch between transport vibration isolation mode and operation rigid support mode without removing vibration isolation components. Summary of the Invention

[0006] To address the problem that existing technologies cannot reliably switch the load-bearing path between the transport vibration isolation state and the operation rigid support state of a mobile radar installation platform without removing the vibration isolation components, this invention proposes a dual-condition load-bearing switching device for a mobile radar emergency command vehicle, comprising a dedicated load-bearing frame, a radar installation platform, vibration isolation components, a rigid bypass component, and a support leveling component. The dedicated load-bearing frame is connected to the vehicle chassis, the radar mounting platform is supported on the dedicated load-bearing frame by the vibration isolation component, and the support and leveling component is connected to the dedicated load-bearing frame and can be supported on the ground. The rigid bypass assembly includes a fixed support, an upper connecting seat, a wedge-shaped slider, and a working stop. The fixed support is disposed on the dedicated support frame, the upper connecting seat is disposed on the radar mounting platform, and the wedge-shaped slider is disposed on the fixed support and is movable relative to the fixed support. The wedge-shaped slider has a thin end and a thick end along the feed direction, the thin end facing the feed direction and the thick end facing away from the feed direction. The wedge-shaped slider has a transport position in which it exits the bearing area between the fixed bearing seat and the upper connecting seat and maintains a transport gap with the upper connecting seat, and a working position in which the thin end enters the bearing area in front and abuts against the fixed bearing seat and the upper connecting seat respectively. The working stop is provided on the fixed support seat and can move between a clearance position that avoids the movement path of the wedge slider and a bearing position in the retraction direction of the wedge slider. When the wedge slider is in the working position, the working stop is in the bearing position and abuts against the rear bearing surface of the thick end of the wedge slider. When the wedge-shaped slider is in the transport position, the load of the radar mounting platform is transferred to the vehicle chassis via the vibration isolation component and the dedicated load-bearing frame; when the wedge-shaped slider is in the working position, the load of the radar mounting platform is transferred to the ground via the upper connecting seat, the wedge-shaped slider, the fixed load-bearing seat, the dedicated load-bearing frame and the support leveling component, and the reaction force of the wedge-shaped slider along the retraction direction is transferred to the fixed load-bearing seat via the working stop.

[0007] Furthermore, The dedicated load-bearing frame includes two longitudinal beams, a crossbeam connecting the two longitudinal beams, and a leg mounting base located on the outside of the longitudinal beams. The fixed bearing seat is located at the intersection of the longitudinal beam and the transverse beam. The leg mounting seat, together with the longitudinal beam and the transverse beam, forms a bearing node. The support leveling component is installed on the leg mounting seat.

[0008] Furthermore, The vibration isolation assembly includes multiple vibration isolators and limiting components for restricting the displacement of the radar mounting platform relative to the dedicated load-bearing frame; When the wedge-shaped slider is in the transport position and the radar mounting platform is in a statically balanced position, the minimum transport gap between the wedge-shaped slider and the upper coupling seat, measured along the vertical direction of the vehicle. g satisfy:

[0009] in, The maximum vertical relative displacement of the radar mounting platform toward the dedicated support frame is allowed by the limiting component, where Δ is the manufacturing and assembly deviation. s This is a non-contact safety margin.

[0010] Furthermore, The fixed bearing seat has a horizontal guide bearing surface extending along the feeding direction of the wedge slider, the wedge slider has a horizontal bottom surface that slides with the horizontal guide bearing surface and an upper wedge surface that gradually decreases from the thick end to the thin end, and the upper connecting seat has a lower connecting slope that engages with the upper wedge surface; The angle between the upper wedge surface and the horizontal guide bearing surface is: The horizontal travel of the wedge-shaped slider from initial contact with the upper engagement seat to reaching the working position is: x The theoretical vertical compensation amount formed by the horizontal stroke h satisfy:

[0011] Furthermore, The fixed support base is provided with side guide plates on both sides, and the wedge-shaped slider is provided with guide keys on both sides that cooperate with the side guide plates. The upper part of the side guide plate is provided with an upper pressure plate that covers part of the guide keys. The side guide plate cooperates with the guide key to limit the wedge slider's sway along the direction perpendicular to the feed direction, and the upper pressure plate is used to prevent the wedge slider from disengaging from the fixed support.

[0012] Furthermore, The working stop is a pluggable load-bearing stop block. The fixed bearing seat is provided with a stop groove that intersects with the movement path of the wedge-shaped slider. The yielding position of the working stop is the position where it exits the stop groove, and the load-bearing position is the position where it is inserted into the stop groove and abuts against the rear load-bearing surface of the thick end of the wedge-shaped slider. The working stop is provided with a stop safety pin to prevent it from disengaging from the stop groove.

[0013] Furthermore, The rigid bypass assembly also includes a drive screw, a thrust connection seat, a screw lock nut, and a transport stop; The drive screw is connected to the thin end of the wedge slider via the thrust connecting seat, and is used to drive the wedge slider to move between the transport position and the working position; The lead screw locking nut is provided on the drive lead screw to limit the drive lead screw from rotating due to vibration. The transport stop is located on the retraction side of the working position and is used to limit the transport position of the wedge-shaped slider.

[0014] Furthermore, The rigid bypass assembly is provided in four sets, and the four sets of rigid bypass assemblies are respectively located near the four corners of the radar mounting platform; The wedge-shaped sliders located on the left and right sides of the radar mounting platform enter the corresponding bearing areas from opposite directions, and each wedge-shaped slider enters the corresponding bearing area with its thin end facing forward.

[0015] Furthermore, An adjusting shim for adjusting the installation height of the fixed bearing seat is provided between the fixed bearing seat and the dedicated bearing frame; A replaceable wear-resistant plate is provided at least at one location between the wedge-shaped slider and the fixed bearing seat and between the wedge-shaped slider and the upper engaging seat.

[0016] Furthermore, The radar mounting platform passes through the floor of the mobile radar emergency command vehicle, and there is an annular gap between the radar mounting platform and the floor of the vehicle. The annular gap is closed by a flexible sealing cover. The inner edge of the flexible sealing cover is connected to the radar mounting platform, and the outer edge of the flexible sealing cover is connected to the vehicle floor. The flexible sealing cover can deform with the displacement of the radar mounting platform relative to the vehicle floor during transportation.

[0017] The beneficial effects of this invention are: To address the aforementioned problems, this invention proposes a dual-condition load switching device for a mobile radar emergency command vehicle, which offers the following improvements: 1. This invention solves the problem that mobile radar cannot meet both the requirements of vibration isolation during transportation and the requirements of rigid support during operation without removing the vibration isolation components by setting a removable rigid bypass component between the radar mounting platform and the dedicated load-bearing frame, and constructing a switchable load transfer path by combining vibration isolation components and support leveling components. This allows the mobile radar to maintain vibration isolation support during transportation and transfer the load to the ground through the rigid bypass during operation.

[0018] 2. The rigid bypass assembly includes a fixed bearing seat, an upper connecting seat, a wedge-shaped slider, and a working stop. The wedge-shaped slider can move between the transport position and the working position, and forms a bearing connection with the fixed bearing seat and the upper connecting seat respectively in the working position. This allows the vertical load of the radar mounting platform to be transferred to the dedicated bearing frame and the support leveling assembly through the upper connecting seat, the wedge-shaped slider, and the fixed bearing seat, thus avoiding the continuous transmission of the main load through the vibration isolation assembly during operation.

[0019] 3. The wedge slider adopts a structure with the thin end facing the feed direction and the thick end facing away from the feed direction. It cooperates with the upper connecting seat through the wedge surface to form a vertical compensation relationship during the movement of the wedge slider. This allows multiple load-bearing joint positions to achieve load-bearing contact through the wedge structure, adapting to the influence of installation gaps and assembly deviations on load switching.

[0020] 4. The working stop is set at the bearing position after the wedge slider reaches the working position and is close to the rear bearing surface of the thick end of the wedge slider. This allows the retraction reaction force generated by the wedge surface contact to be transmitted to the fixed bearing seat through the working stop, so that the drive screw does not have to bear the working reaction force for a long time, thus reducing the load on the drive components in the switching mechanism.

[0021] 5. The fixed bearing seat is equipped with a horizontal guide bearing surface, and the wedge slider is equipped with a horizontal bottom surface that cooperates with it. At the same time, the lateral swing and disengagement of the wedge slider are restricted by the side guide plate, guide key and upper pressure plate, so that the wedge slider can complete the forward and backward movement in the predetermined direction and maintain the bearing engagement relationship.

[0022] 6. The rigid bypass components are set in multiple groups and arranged in multiple positions on the radar mounting platform, so that the load of the radar mounting platform can be transferred to the dedicated load-bearing frame and support leveling components through multiple load-bearing joints, avoiding a single load-bearing path bearing the entire operating load. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall installation structure of the dual-condition load switching device for the mobile radar emergency command vehicle of the present invention; Figure 2 This is a schematic diagram showing the arrangement of the special bearing frame, vibration isolation component, rigid bypass component, and support leveling component of the present invention. Figure 3 This is a schematic diagram of the wedge-shaped slider of the present invention in the transport position; Figure 4 This is a schematic diagram of the structure and force transmission of the wedge-shaped slider of the present invention when it is in the working position; Figure 5 This is a schematic diagram showing the cooperation relationship between the wedge-shaped slider, the working stop, and the retraction reaction force of the present invention; Figure 6 This is a schematic diagram of the flexible sealing structure between the radar mounting platform and the vehicle floor of the present invention; Figure 7 This is a cross-sectional view of the guide and anti-detachment structure of the wedge-shaped slider of the present invention; Figure 8 This is a schematic diagram showing the force transmission relationship between the rigid bypass component and the support leveling component of the present invention.

[0025] Explanation of reference numerals in the attached drawings: 1—Vehicle chassis; 2—Special load-bearing frame; 21—Longitudinal beam; 22—Crossbeam; 23—Outrigger mounting seat; 3—Radar mounting platform; 31—Upper joint seat; 4—Vibration isolation assembly; 41—Vibration isolator; 42—Limiting component; 5—Rigid bypass assembly; 51—Fixed load-bearing seat; 52—Wedge slider; 53—Horizontal guide load-bearing surface; 54—Lower joint inclined surface; 55—Drive screw; 56—Screw locking nut; 57—Transport stop; 58—Adjusting shim; 59—Replaceable wear-resistant plate; 60—Working stop; 61—Retractable outrigger; 62—Outrigger foot; 63—Thrust connection seat; 64—Stop safety pin; 65—Side guide plate; 66—Upper pressure plate; 67—Guide key; 6—Support leveling assembly; 7—Radar; 8—Cargo compartment floor; 81—Flexible sealing cover. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Combination Figures 1 to 8 This invention proposes a dual-condition load-bearing switching device for a mobile radar emergency command vehicle, comprising a dedicated load-bearing frame 2, a radar mounting platform 3, a vibration isolation component 4, a rigid bypass component 5, and a support and leveling component 6. The dedicated load-bearing frame 2 is connected to the vehicle chassis 1, the radar mounting platform 3 is supported on the dedicated load-bearing frame 2 by the vibration isolation component 4, and the support and leveling component 6 is connected to the dedicated load-bearing frame 2 and can be supported on the ground. The rigid bypass assembly 5 includes a fixed support 51, an upper connecting seat 31, a wedge-shaped slider 52, and a working stop 60. The fixed support 51 is disposed on the dedicated support frame 2, the upper connecting seat 31 is disposed on the radar mounting platform 3, and the wedge-shaped slider 52 is disposed on the fixed support 51 and is movable relative to the fixed support 51. The wedge-shaped slider 52 has a thin end and a thick end along the feed direction. The thin end faces the feed direction, and the thick end faces away from the feed direction. The wedge-shaped slider 52 has a transport position in which it exits the bearing area between the fixed bearing seat 51 and the upper connecting seat 31 and maintains a transport gap with the upper connecting seat 31, and a working position in which the thin end enters the bearing area in front and abuts against the fixed bearing seat 51 and the upper connecting seat 31 respectively. The working stop 60 is disposed on the fixed bearing seat 51 and can move between a clearance position that avoids the movement path of the wedge slider 52 and a bearing position that is located in the retraction direction of the wedge slider 52. When the wedge slider 52 is in the working position, the working stop 60 is in the bearing position and abuts against the rear bearing surface of the thick end of the wedge slider 52. When the wedge-shaped slider 52 is in the transport position, the load of the radar mounting platform 3 is transmitted to the vehicle chassis 1 through the vibration isolation component 4 and the dedicated load-bearing frame 2; when the wedge-shaped slider 52 is in the working position, the load of the radar mounting platform 3 is transmitted to the ground through the upper connecting seat 31, the wedge-shaped slider 52, the fixed load-bearing seat 51, the dedicated load-bearing frame 2 and the support leveling component 6, and the reaction force of the wedge-shaped slider 52 along the retraction direction is transmitted to the fixed load-bearing seat 51 through the working stop 60.

[0028] Furthermore, The dedicated load-bearing frame 2 includes two longitudinal beams 21, a crossbeam 22 connecting the two longitudinal beams 21, and a leg mounting base 23 located on the outside of the longitudinal beams 21. The fixed bearing seat 51 is disposed in the junction area of ​​the longitudinal beam 21 and the transverse beam 22. The leg mounting seat 23 together with the longitudinal beam 21 and the transverse beam 22 forms a bearing node. The support leveling component 6 is installed on the leg mounting seat 23.

[0029] Furthermore, The vibration isolation assembly 4 includes a plurality of vibration isolators 41 and a limiting member 42 for limiting the displacement of the radar mounting platform 3 relative to the dedicated load-bearing frame 2; When the wedge-shaped slider 52 is in the transport position and the radar mounting platform 3 is in the static balance position, the minimum transport gap between the wedge-shaped slider 52 and the upper connecting seat 31 measured along the vertical direction of the vehicle.g satisfy:

[0030] in, The maximum vertical relative displacement of the radar mounting platform 3 toward the dedicated support frame 2 is allowed by the limiting member 42, where Δ is the manufacturing and assembly deviation. s This is a non-contact safety margin.

[0031] Furthermore, The fixed bearing seat 51 has a horizontal guide bearing surface 53 extending along the feeding direction of the wedge slider 52, the wedge slider 52 has a horizontal bottom surface that slides with the horizontal guide bearing surface 53 and an upper wedge surface that gradually decreases from the thick end to the thin end, and the upper engaging seat 31 has a lower engaging inclined surface 54 that engages with the upper wedge surface. The angle between the upper wedge surface and the horizontal guide bearing surface 53 is: The horizontal travel of the wedge-shaped slider 52 from its initial contact with the upper engagement seat 31 to reaching the working position is: x The theoretical vertical compensation amount formed by the horizontal stroke h satisfy:

[0032] Furthermore, The fixed support base 51 is provided with side guide plates 65 on both sides, the wedge slider 52 is provided with guide keys 67 on both sides that cooperate with the side guide plates 65, and the upper part of the side guide plate 65 is provided with an upper pressure plate 66 that covers a part of the guide keys 67. The side guide plate 65 cooperates with the guide key 67 to limit the wedge slider 52 from swaying along the direction perpendicular to the feed direction, and the upper pressure plate 66 is used to prevent the wedge slider 52 from disengaging from the fixed support 51. Furthermore, The working stop 60 is a pluggable load-bearing stop block. The fixed bearing base 51 is provided with a stop groove that intersects with the movement path of the wedge slider 52. The yielding position of the working stop 60 is the position where it exits the stop groove, and the load-bearing position is the position where it is inserted into the stop groove and abuts against the rear load-bearing surface of the thick end of the wedge slider 52. The working stop 60 is provided with a stop safety pin 64 to prevent it from disengaging from the stop groove.

[0033] Furthermore, The rigid bypass assembly 5 also includes a drive screw 55, a thrust connecting seat 63, a screw locking nut 56, and a transport stop 57; The drive screw 55 is connected to the thin end of the wedge slider 52 via the thrust connecting seat 63, and is used to drive the wedge slider 52 to move between the transport position and the working position; The lead screw locking nut 56 is disposed on the drive lead screw 55 and is used to limit the drive lead screw 55 from rotating on its own due to vibration; The transport stop 57 is located on the retraction side of the working position and is used to limit the transport position of the wedge slider 52.

[0034] Furthermore, The rigid bypass assembly 5 is provided in four sets, and the four sets of rigid bypass assemblies 5 are respectively located near the four corners of the radar mounting platform 3. The wedge-shaped sliders 52 located on the left and right sides of the radar mounting platform 3 enter the corresponding bearing areas from opposite directions, and each wedge-shaped slider 52 enters the corresponding bearing area with its thin end facing forward.

[0035] Furthermore, An adjusting shim 58 for adjusting the installation height of the fixed bearing seat 51 is provided between the fixed bearing seat 51 and the special bearing frame 2; A replaceable wear-resistant plate 59 is provided at least at one location between the wedge-shaped slider 52 and the fixed bearing seat 51 and between the wedge-shaped slider 52 and the upper connecting seat 31.

[0036] Furthermore, The radar mounting platform 3 passes through the vehicle floor 8 of the mobile radar emergency command vehicle, and there is an annular gap between the radar mounting platform 3 and the vehicle floor 8. The annular gap is closed by a flexible sealing cover 81. The inner edge of the flexible sealing cover 81 is connected to the radar mounting platform 3, and the outer edge of the flexible sealing cover 81 is connected to the vehicle floor 8. The flexible sealing cover 81 can deform with the displacement of the radar mounting platform 3 relative to the vehicle floor 8 during transportation.

[0037] The present invention will be further described in detail below with reference to specific embodiments, but the scope of protection of the present invention is not limited to the following embodiments. Unless otherwise specified in the following embodiments, conventional conditions or existing test conditions were followed.

[0038] Example 1 This embodiment provides a dual-condition load-bearing switching device for a mobile radar emergency command vehicle. The dedicated load-bearing frame 2 is manufactured according to the longitudinal beam positions of the vehicle chassis, and a crossbeam 22 is installed between two longitudinal beams 21. The outrigger mounting base 23, the fixed load-bearing base 51, and the crossbeam 22 are positioned as close as possible to the same node. This arrangement ensures that the load at the wedge joint does not need to be routed to the vehicle frame first. The cross-sections of the longitudinal and transverse beams, connecting bolts, and welds are determined based on the actual radar weight, outrigger reaction force, and allowable chassis load.

[0039] Four vibration isolators 41 are arranged near the four corners of the radar mounting platform 3, and four sets of rigid bypass components 5 are located inside the vibration isolators 41. The left wedge advances towards the center of the vehicle body, and the right wedge advances in the opposite direction. Although the feed directions of the two wedges are opposite, both have their thinner ends facing forward. This arrangement can prevent the horizontal reaction forces of the four wedges from pressing on the same side of the frame.

[0040] Figures 3 to 5 The wedge movement is described using the same direction: from left to right is the feed, the right end is the thinner end, and the left end is the thicker end; the reverse movement is the retraction. The horizontal guide bearing surface 53 of the fixed bearing seat 51 supports the bottom surface of the wedge, and the lower engaging inclined surface 54 of the upper engaging seat 31 is parallel to the upper wedge surface of the wedge. The further the wedge is fed to the right, the thicker the portion entering below the upper engaging seat becomes.

[0041] Side guide plates 65 are provided on both sides of the fixed bearing seat 51, and guide keys 67 on both sides of the wedge block move between the side guide plates. The side guide plates are matched with the actual measured width of the wedge block as a reference: first, it is ensured that there are no clamping points in the wedge block throughout its entire stroke, and then the guide keys are checked to maintain effective guidance under off-center load. An anti-disengagement gap is left between the upper pressure plate 66 and the guide keys, so that even if the wedge block jumps slightly during unloading and recycling, it will not fall out of the guide groove.

[0042] The transport clearance is measured when the vehicle is parked smoothly and the radar mounting platform 3 is naturally stable. The wedge-shaped slider 52 is first retracted to the transport stop 57, and then the minimum distance between the wedge and the upper engagement seat 31 is checked along the vertical direction of the vehicle. δmax is the maximum downward travel allowed by the limit member 42, which can be determined according to the dimensions of the limit member drawing, or it can be remeasured after final assembly when low-speed loading reaches contact with the limit member. In addition to δmax, the transport clearance should also allow for assembly deviations and non-contact allowances.

[0043] When vehicles are moved between locations, the vibration isolator 41 bears the normal road load, while the limiting component 42 withstands impacts exceeding the normal travel of the vibration isolator. The wedge-shaped slider 52 does not also serve as a transport limiter. After traversing bumpy roads, if the transport clearance at a certain point becomes significantly smaller, the settlement of the vibration isolator, deformation of the limiting component, and frame should be checked. The wedge should not be ground down to make up the clearance.

[0044] The wedge angle α and effective stroke x are determined based on the measured transport clearance, with a theoretical compensation of h = x × tanα. When selecting the dimensions, h should not only cover the transport clearance but also allow for wear plate wear, frame elastic deformation, and pre-tightening of the joint. If the wedge angle is too large, the screw drive force increases; if the angle is too small, the wedge block stroke becomes longer. Therefore, it should be determined in conjunction with the available space inside the vehicle and the actual operating force. This device relies on the working stop to withstand the retraction reaction force and does not rely on wedge self-locking as a safety condition for operation.

[0045] The drive screw 55 is located on one side of the thin end of the wedge and drives the wedge to reciprocate via the thrust connecting seat 63. Before the wedge moves, the working stop 60 retracts from the stop groove; after the wedge is in position, the working stop 60 is inserted behind the thick end, so that the two bearing surfaces are in contact, and the stop safety pin 64 is inserted. At this time, the horizontal component of the wedge retracting to the transport position is transmitted to the fixed bearing seat 51 through the rear bearing surface, the working stop, and the side wall of the stop groove.

[0046] The dimensions of the working stop 60 are selected based on the maximum reaction force that a single bypass may withstand. In preliminary calculations, the horizontal component of the wedge force can be estimated by multiplying the maximum vertical reaction force of the bypass by tanα, and then considering friction, impact, and uneven stress distribution with a safety margin. The bearing surface of the stop block and the sidewalls of the stop groove are checked for bearing pressure, and the welds or connectors between the stop groove and the fixed bearing seat are checked for the same horizontal component force. The stop safety pin 64 only prevents the stop block from falling out and is not included in the main bearing section.

[0047] The lead screw locking nut 56 is used to prevent the lead screw from rotating on its own due to vehicle vibration, and it does not rely on the wedge block to hold it in place. During prototype debugging, first record whether the no-load reciprocating motion is smooth, and then compare the order in which the four engagement points begin to contact. If the operating force at a certain point suddenly increases, while the diagonal points have not yet made contact, it is mostly due to height difference, guide misalignment, or foreign objects in the groove. The point should be removed for inspection, and force should not be applied further.

[0048] After the four sets of wedges are engaged, the radar mounting surface can be loaded in stages, while simultaneously measuring the vertical displacement of the platform near the four engagement points. Once each point enters contact, the displacement change should be continuous, and the wedges should be able to retract after unloading. If there is still significant continued subsidence at a certain point, the adjusting shims, wear-resistant plate contacts, and frame joints at that point should be checked, and the engagement height should be readjusted.

[0049] Figure 8 The force calculation boundary of the entire vehicle is shown. During engineering finalization, the reaction force at each bypass joint, the pull-out force of the outrigger on the windward side, and the ground pressure are calculated based on the actual outrigger span, radar center of gravity position, windward area, design wind speed, and turntable inertial load. When simplifying to the two most unfavorable rows of outriggers, the first round of verification can be performed using N1+N2=W and (N2-N1)B / 2=M, where W is the total vertical load, B is the outrigger span, and M is the overturning moment. If the windward reaction force is less than or equal to zero, the outrigger span, counterweight, or allowable operating wind speed should be adjusted.

[0050] During initial assembly, all four wedge-shaped sliders 52 are retracted to the transport stop 57, and the working stop 60 is in the yield position. The radar mounting platform 3 is supported only by the vibration isolator 41. After the platform stabilizes naturally, the fixed bearing seat 51 and the upper connecting seat 31 are installed. The four transport gaps are corrected by adjusting the shims 58. The four readings do not need to be exactly the same, but a specified gap must be left at each point, and the measured values ​​are recorded in the assembly record.

[0051] After the vehicle arrives at the work site, first deploy the telescopic outriggers 61 and level the special load-bearing frame 2. Once the vehicle suspension has rebounded and stabilized, insert the wedges. The four wedges are operated in two stages: the first stage involves inserting them diagonally until they just contact the inclined plane; the second stage involves gradually increasing the preload at each point. After each wedge is in place, insert the working stop 60 and the stop safety pin 64. If a point makes premature contact, remove that point and adjust the shim 58 to correct the height difference.

[0052] During operation, the vertical load enters the wedge-shaped slider 52 through the upper connecting seat 31, and is then transmitted to the ground via the fixed bearing seat 51, the special bearing frame 2, and the telescopic outrigger 61. The vibration isolator 41 remains in its original position and only bears the load distributed to the parallel branch. The lateral sway of the wedge is constrained by the guide key 67 and the side guide plate 65, and the horizontal component of the force that returns to the transport position is borne by the working stop 60.

[0053] When retracting the vehicle, first loosen the preload of the wedge blocks diagonally, pull out the stop safety pin 64 and the working stop 60, and then use the drive screw 55 to retract the wedge blocks to the transport stop 57. Only after confirming that the transport clearance has reappeared in all four locations should the telescopic outriggers 61 be retracted. If the outriggers are removed first, the chassis suspension and tires will be stressed again, which will change the frame posture, and the wedge blocks may be trapped between the upper and lower mating surfaces.

[0054] During routine inspections, use a feeler gauge to record the four transport gaps and check for any skew marks on the wear-resistant plate 59. When sand enters the guide groove, clean it first and then test push it; after replacing the wear-resistant plate, restore the original gap by adjusting the shim 58. If a certain wedge repeatedly wears unevenly, check the corresponding support leg mounting base, fixed bearing base, and frame joint; do not simply replace the wedge.

[0055] The radar mounting platform 3 passes through the carriage floor 8, with an annular gap between them. The inner and outer edges of the flexible sealing cover 81 are fixed to the radar mounting platform 3 and the carriage floor 8, respectively, and the corrugated section deforms with the displacement of the platform during transportation. The sealing cover only protects against rain and dust, and no rigid pressure strip is installed between the carriage floor and the platform to avoid an additional uncalculated force transmission branch.

[0056] The wedge angle, stroke, transport clearance, and guide fit dimensions are all determined based on the actual vehicle model, vibration isolator stroke, and radar load. The working stop 60 can be inserted from above or from the side of the fixed bearing; it can also be modified into a swing stop that can rotate into the load-bearing position. Regardless of the form used, the stop should move aside when the wedge moves, and after the wedge is in place, the stop should be located on the return side of the thick end, transmitting the return reaction force to the fixed bearing.

[0057] The above provides a detailed description of a dual-mode load switching device for a mobile radar emergency command vehicle proposed in this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solution and core ideas of this invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this invention. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A dual-condition load-bearing switching device for a mobile radar emergency command vehicle, characterized in that, It includes a dedicated load-bearing frame (2), a radar mounting platform (3), vibration isolation components (4), a rigid bypass component (5), and a support and leveling component (6). The dedicated load-bearing frame (2) is connected to the vehicle chassis (1), the radar mounting platform (3) is supported on the dedicated load-bearing frame (2) by the vibration isolation component (4), and the support and leveling component (6) is connected to the dedicated load-bearing frame (2) and can be supported on the ground. The rigid bypass assembly (5) includes a fixed support (51), an upper connecting seat (31), a wedge slider (52), and a working stop (60). The fixed support (51) is disposed on the dedicated support frame (2), the upper connecting seat (31) is disposed on the radar mounting platform (3), and the wedge slider (52) is disposed on the fixed support (51) and is movable relative to the fixed support (51). The wedge-shaped slider (52) has a thin end and a thick end along the feed direction, the thin end facing the feed direction and the thick end facing away from the feed direction. The wedge-shaped slider (52) has a transport position in which it exits the bearing area between the fixed bearing seat (51) and the upper connecting seat (31) and maintains a transport gap with the upper connecting seat (31), and a working position in which the thin end enters the bearing area in front and abuts against the fixed bearing seat (51) and the upper connecting seat (31) respectively. The working stop (60) is provided on the fixed bearing seat (51) and can move between a clearance position that avoids the movement path of the wedge slider (52) and a bearing position in the retraction direction of the wedge slider (52). When the wedge slider (52) is in the working position, the working stop (60) is in the bearing position and abuts against the rear bearing surface of the thick end of the wedge slider (52). When the wedge slider (52) is in the transport position, the load of the radar mounting platform (3) is transmitted to the vehicle chassis (1) through the vibration isolation component (4) and the special bearing frame (2); when the wedge slider (52) is in the working position, the load of the radar mounting platform (3) is transmitted to the ground through the upper connecting seat (31), the wedge slider (52), the fixed bearing seat (51), the special bearing frame (2) and the support leveling component (6), and the reaction force of the wedge slider (52) along the retraction direction is transmitted to the fixed bearing seat (51) through the working stop (60).

2. The apparatus according to claim 1, characterized in that, The dedicated load-bearing frame (2) includes two longitudinal beams (21), a crossbeam (22) connecting the two longitudinal beams (21), and a leg mounting base (23) located outside the longitudinal beams (21). The fixed bearing seat (51) is located at the junction of the longitudinal beam (21) and the cross beam (22). The leg mounting seat (23), the longitudinal beam (21) and the cross beam (22) together form a bearing node. The support leveling component (6) is installed on the leg mounting seat (23).

3. The apparatus according to claim 1, characterized in that, The vibration isolation assembly (4) includes multiple vibration isolators (41) and limiting members (42) for limiting the displacement of the radar mounting platform (3) relative to the dedicated load-bearing frame (2). When the wedge-shaped slider (52) is in the transport position and the radar mounting platform (3) is in the static equilibrium position, the minimum transport gap between the wedge-shaped slider (52) and the upper connecting seat (31) measured along the vertical direction of the vehicle. g satisfy: in, The maximum vertical relative displacement of the radar mounting platform (3) toward the dedicated support frame (2) allowed by the limiting member (42), where Δ is the manufacturing and assembly deviation. s This is a non-contact safety margin.

4. The apparatus according to claim 1, characterized in that, The fixed bearing seat (51) has a horizontal guide bearing surface (53) extending along the feeding direction of the wedge slider (52), the wedge slider (52) has a horizontal bottom surface that slides with the horizontal guide bearing surface (53) and an upper wedge surface that gradually decreases from the thick end to the thin end, and the upper connecting seat (31) has a lower connecting slope (54) that cooperates with the upper wedge surface. The angle between the upper wedge surface and the horizontal guide bearing surface (53) is: The horizontal travel of the wedge-shaped slider (52) from initial contact with the upper engagement seat (31) to reaching the working position is: x The theoretical vertical compensation amount formed by the horizontal stroke h satisfy: 。 5. The apparatus according to claim 1, characterized in that, The fixed support base (51) is provided with side guide plates (65) on both sides, and the wedge slider (52) is provided with guide keys (67) that cooperate with the side guide plates (65) on both sides. The upper part of the side guide plate (65) is provided with an upper pressure plate (66) that covers part of the guide keys (67). The side guide plate (65) cooperates with the guide key (67) to limit the wedge slider (52) from swaying in a direction perpendicular to the feed direction, and the upper pressure plate (66) is used to limit the wedge slider (52) from disengaging from the fixed support (51).

6. The apparatus according to claim 1, characterized in that, The working stop (60) is a pluggable load-bearing stop block. The fixed bearing seat (51) is provided with a stop groove that intersects with the movement path of the wedge slider (52). The yielding position of the working stop (60) is the position where it exits the stop groove. The load-bearing position is the position where it is inserted into the stop groove and abuts against the rear load-bearing surface of the thick end of the wedge slider (52). The working stop (60) is provided with a stop safety pin (64) to prevent it from disengaging from the stop groove.

7. The apparatus according to claim 1, characterized in that, The rigid bypass assembly (5) also includes a drive screw (55), a thrust connector (63), a screw locking nut (56), and a transport stop (57). The drive screw (55) is connected to the thin end of the wedge slider (52) via the thrust connecting seat (63) and is used to drive the wedge slider (52) to move between the transport position and the working position; The lead screw locking nut (56) is provided on the drive lead screw (55) to limit the drive lead screw (55) from rotating on its own due to vibration; The transport stop (57) is located on the retraction side of the working position and is used to limit the transport position of the wedge slider (52).

8. The apparatus according to claim 1, characterized in that, The rigid bypass assembly (5) is provided in four sets, and the four sets of rigid bypass assemblies (5) are respectively located near the four corners of the radar mounting platform (3); The wedge-shaped sliders (52) located on the left and right sides of the radar mounting platform (3) enter the corresponding bearing areas from opposite directions.

9. The apparatus according to claim 1, characterized in that, An adjusting shim (58) for adjusting the installation height of the fixed bearing seat (51) is provided between the fixed bearing seat (51) and the special bearing frame (2). A replaceable wear-resistant plate (59) is provided at least at one location between the wedge slider (52) and the fixed bearing seat (51) and between the wedge slider (52) and the upper connecting seat (31).

10. The apparatus according to claim 1, characterized in that, The radar mounting platform (3) passes through the floor (8) of the mobile radar emergency command vehicle, and there is an annular gap between the radar mounting platform (3) and the floor (8). The annular gap is closed by a flexible sealing cover (81). The inner edge of the flexible sealing cover (81) is connected to the radar mounting platform (3), and the outer edge of the flexible sealing cover (81) is connected to the carriage floor (8). The flexible sealing cover (81) can deform with the displacement of the radar mounting platform (3) relative to the carriage floor (8) in the transportation state.

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