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CN-121989872-A - Battery replacement equipment at bottom of ultra-low heavy-duty card

CN121989872ACN 121989872 ACN121989872 ACN 121989872ACN-121989872-A

Abstract

The invention relates to a battery replacing device at the bottom of an ultralow heavy truck, which comprises a hollow first frame body, wherein a second frame body capable of transversely floating is suspended in the first frame body through a suspension supporting rod. Four groups of jacking link mechanisms synchronously driven by a screw rod transmission module are arranged in the second frame body and jointly hinged to support the battery bearing plate, so that Z-direction lifting and Ry-direction inclination self-adaption are realized. The two sides of the first frame body are connected with the fourth frame body and the fifth frame body through the extension supporting plates and the turntable bearings and driven by the servo electric cylinder, so that Y-direction translation and Rz rotation of the equipment are realized. An Rx active leveling mechanism formed by an eccentric wheel body is arranged in the fifth frame body. An electric wrench with elastic floating connection is arranged on the battery bearing plate. By integrating the multi-degree-of-freedom adjusting mechanism, the invention can finish accurate pose adjustment and battery replacement in a low space, does not need a deep foundation pit, greatly reduces civil engineering cost, and remarkably improves the reliability and efficiency of battery replacement.

Inventors

  • HU XIAOMING
  • ZHU MING
  • WANG KAIFENG
  • ZHU SHAOMIN
  • HUANG ZHENGRUI
  • YAN CHUANFENG

Assignees

  • 浙江康迪智能换电科技有限公司

Dates

Publication Date
20260508
Application Date
20260205

Claims (10)

  1. 1. The power exchange equipment at the bottom of the ultra-low heavy truck comprises a hollow first frame body (1) and is characterized in that a plurality of second frame bodies (2) are arranged in parallel in the first frame body (1), gaps are reserved between the adjacent second frame bodies (2), a jacking connecting rod mechanism (3) and a screw rod transmission module (4) are arranged in each second frame body (2), a driving piece capable of moving along the axial direction of each screw rod transmission module (4) abuts against the bottom of a connecting rod of the jacking connecting rod mechanism (3), the jacking connecting rod mechanism (3) changes in height along with the position change of the driving piece on the screw rod transmission module (4), a battery bearing plate (5) is arranged on the jacking connecting rod mechanism (3), a plurality of positioning pins (51) and an electric wrench (52) for disassembling bolts are arranged on the battery bearing plate (5), extension supporting plates (10) are arranged on the two sides of the top of the first frame body (1) in an outward extending mode along the horizontal direction, a lower surface of each extension supporting plate (10) is provided with a fourth frame body (6), a fourth supporting plate (6) can be arranged on the fourth frame body (6) and a fifth frame body (6) can be arranged on the fourth frame body (6) in a sliding mode, the fourth frame body (6) can be arranged on the fourth frame body (6), the bottom of each turntable bearing (11) is provided with a turntable base (110), the turntable of each turntable bearing (11) is connected to the lower surface of the extending support plate (10), the turntable base (110) is hinged to the inside of the fifth frame body (7), the axis of a pin shaft at the hinged position of the turntable base (110) is perpendicular to the axis of the turntable bearing (11), the inside of the fifth frame body (7) is also provided with a servo electric cylinder (8), the cylinder body of the servo electric cylinder (8) is hinged to the inside of the fifth frame body (7), and the end part of a piston rod of the servo electric cylinder (8) is hinged to the fourth frame body (6).
  2. 2. The power conversion device according to claim 1, wherein a plurality of first motor support plates (71) are further arranged in each fifth frame body (7), first motor bodies (72) are further arranged on each first motor support plate (71), eccentric wheel bodies (73) are eccentrically arranged at the rotating shaft end parts of each first motor body (72), base plate bodies (101) are further arranged on the lower surfaces of the extension support plates (10), and the outer surfaces of the eccentric wheel bodies (73) are attached to the lower surfaces of the base plate bodies (101).
  3. 3. The power conversion device according to claim 1, wherein the first frame body (1) is further provided with a limiting groove (12), a plurality of avoiding through holes (121) are further formed in the limiting groove (12), a plurality of limiting vertical plates (13) clamped in the limiting groove (12) are arranged in the limiting groove (12), a first hinge pin (131) is arranged in the limiting vertical plates (13), each first hinge pin (131) is provided with a plurality of hanging support rods (14), two sides of each second frame body (2) are provided with a plurality of hanging support blocks (21), the bottoms of the hanging support rods (14) penetrate through the avoiding through holes (121) until being connected with the hanging support blocks (21) in a hinged mode, gaps are formed between the outer side walls of the second frame bodies (2) and the inner walls of the first frame bodies (1), and the hanging support rods (14), the hanging support blocks (21), the bottoms of the first frame bodies (1) and the second frame bodies (2) are located on the same plane.
  4. 4. The power conversion device according to claim 2, wherein an electric cylinder supporting plate (74) is arranged in each fifth frame body (7), a plurality of first hinge supporting plates (741) are arranged on the electric cylinder supporting plates (74), a bottom plate body (61) is arranged on the lower surface of each fourth frame body (6), a second hinge supporting plate (611) is arranged in the bottom plate body (61) towards the inside of each fifth frame body (7), a cylinder body of each servo electric cylinder (8) is hinged between the adjacent first hinge supporting plates (741), a piston rod end portion of each servo electric cylinder (8) is hinged on the corresponding second hinge supporting plate (611), a sliding clamping groove (62) is formed in each fourth frame body (6), a second roller (75) is rotatably arranged on the side wall of each fifth frame body (7), and each second roller (75) is arranged in the sliding clamping groove (62).
  5. 5. The power conversion equipment according to claim 4, wherein at least one fourth frame body (6) is further provided with a second motor support plate (64), the second motor support plate (64) is further provided with a second motor body (65), the rotating shaft end portion of each second motor body (65) is provided with a driving gear (66), a roller driving shaft (67) is further arranged between at least two opposite first rollers (60), the roller driving shaft (67) is provided with a driven gear (68), the driving gear (66) is meshed with the driven gear (68), the lower surface of the bottom plate body (61) is further provided with a third roller (612), and the axes of the third roller (612) and the axes of the first rollers (60) are mutually perpendicular.
  6. 6. The power exchange device according to claim 2, wherein each group of the screw transmission modules (4) comprises a screw bearing seat (41), a screw body (42), a screw nut (43), a driving shell (44), a first guide rail (22), a first sliding block (46), a first supporting seat (461), a fourth roller (462) and a third motor body (47), wherein a plurality of screw bearing seats (41) are arranged in each second frame body (2), screw bodies (42) are rotatably arranged in the second frame body, threads which are symmetrically distributed and are opposite in rotation direction are arranged between the screw bearing seats (41), the rotating shaft end of the third motor body (47) is connected to one end of the screw body (42), a plurality of jacking connecting rod mechanisms (3) are symmetrically arranged in the axis direction of the screw body (42), symmetrical lines between the threads of different rotation directions are also used as reference lines, the screw body (42) is provided with a plurality of threads which are different in rotation directions, a plurality of jacking connecting rod mechanisms (3) are also symmetrically arranged in the second frame body (2), screw nuts (43) are arranged in parallel to each second frame body (22), the sliding direction of each first sliding block (46) is the same as the axial direction of the screw rod body (42), the number of the first sliding blocks (46) is the same as the number of the jacking link mechanisms (3), the symmetrical relation among the first sliding blocks (46) is the same as the symmetrical relation among the jacking link mechanisms (3), each first sliding block (46) is provided with a first supporting seat (461), a fourth roller (462) is rotatably arranged in each first supporting seat (461), two sides of each driving shell (44) are abutted against the side wall of the first supporting seat (461), each first supporting seat (461) slides along with the position change of the abutted driving shell (44), and each fourth roller (462) is abutted against the bottom of the connecting rod of the jacking link mechanism (3).
  7. 7. The power conversion equipment according to claim 6, wherein each group of jacking connecting rod mechanisms (3) comprises a second sliding block (31), a second supporting seat (32), second hinging pins (33), first connecting rods (34), fifth rolling wheels (35), second connecting rods (36) and third connecting rods (37), a plurality of third hinging supporting plates (23) are fixedly arranged in the second frame (2), hinging clamping grooves (53) are further formed in the lower surface of the battery bearing plate (5), a plurality of third hinging pins (531) are formed in the hinging clamping grooves (53), a second sliding block (31) is further arranged on each first guide rail (22) in a sliding mode, a second supporting seat (32) is arranged on each second sliding block (31), a second hinging pin (33) is arranged in each second supporting seat (32), one end of each first connecting rod (34) is hinged to the second hinging pin (33), the other end of each first connecting rod (34) is provided with a fifth rolling wheel (462) which can be abutted against the inner surface of the second rolling wheels (33) in a rotating mode, the other end of each first connecting rod (34) is provided with a fifth hinging pin (462) which can be abutted against the inner surface of the second rolling wheels (33), the other end of the second connecting rod (36) is hinged to a third hinge pin shaft (531) in the hinge clamping groove (53), one end of the third connecting rod (37) is hinged to the third hinge supporting plate (23), and the other end of the third connecting rod (37) is hinged to the middle of the second connecting rod (36).
  8. 8. The power conversion equipment according to claim 7, wherein a plurality of second guide rails (24) are arranged in parallel in the second frame (2), a third sliding block (25) is arranged on each second guide rail (24), each screw bearing seat (41) is arranged on the adjacent third sliding block (25), the interior of at least one screw bearing seat (41) is connected with the shell of a third motor body (47), a plurality of baffle plate bodies (26) are arranged in the second frame (2) along the axial direction of the screw rod body (42), the lower surfaces of the battery bearing plates (5) are attached to the tops of the baffle plate bodies (26) when the plurality of jacking connecting rod mechanisms (3) are in a storage state, the baffle plate bodies (26) separate symmetrically arranged driving shells (44) and screw nuts (43), a spring bearing seat (27) is further arranged in the second frame (2), at least one screw bearing seat (41) is arranged between the spring bearing seat (27) and the baffle plate bodies (26), the lower surfaces of the battery bearing plates (5) are attached to the tops of the baffle plate bodies (411) when the plurality of jacking connecting rod mechanisms (3) are in a storage state, a plurality of first belleville springs (412) are arranged between one side of the screw rod bearing seat (41) and the adjacent baffle plate body (26), a plurality of second belleville springs (413) are arranged between the other side of the screw rod bearing seat (41) and the spring support plate (27), each first belleville spring (412) and each second belleville spring (413) are arranged on the spring support plate (411), and each screw rod bearing seat (41) can be pulled to be in a set position when the first belleville springs (412) or the second belleville springs (413) are not subjected to axial thrust.
  9. 9. The power conversion device according to claim 2, wherein each group of electric wrenches (52) comprises a right-angle planetary reducer (521), a sleeve base (523), a fourth motor body (522), a sleeve body (525) and a third belleville spring (529), a plurality of right-angle planetary reducers (521) are further arranged on the battery bearing plate (5), an input shaft of each right-angle planetary reducer (521) is connected to the end part of a rotating shaft of the fourth motor body (522), a sleeve base (523) is arranged on an output shaft of each right-angle planetary reducer (521), hollow polygonal protrusions (524) are arranged on the sleeve base (523), an inner partition plate (526) is arranged inside the sleeve body (525), a first polygonal inner groove (527) is arranged above the inner partition plate (526) inside the sleeve body (525), a second polygonal inner groove (528) which is nested and mounted on the polygonal protrusions (524) is arranged below the inner partition plate (526), a plurality of positioning sleeve plates (523) are further arranged between the inner side of the second polygonal inner groove (524) and the third belleville spring (528) and the inner groove (525) is arranged inside the sleeve base (523), at least two annular locating plates (520) are arranged in a group, and the same group of annular locating plates (520) are coaxial.
  10. 10. The power conversion equipment according to claim 3, wherein a bearing sleeve (111) is arranged below the turntable base (110), a plurality of bearings are arranged in the bearing sleeve (111), a fourth hinge pin shaft (112) is rotatably arranged in the bearing sleeve, a plurality of fourth hinge support plates (76) are further arranged in the fifth frame (7), the fourth hinge pin shaft (112) is hinged to the fourth hinge support plates (76), a plurality of electromagnets (15) are further arranged in the first frame (1), a plurality of iron plate support plates (28) are further arranged on the side wall of the second frame (2), and an iron plate body (29) attached to the electromagnets (15) is arranged on each iron plate support plate (28).

Description

Battery replacement equipment at bottom of ultra-low heavy-duty card Technical Field The invention relates to the technical field of power conversion equipment, in particular to power conversion equipment at the bottom of an ultralow heavy-duty card. Background The electric heavy truck power conversion is an important energy supplementing mode for the current commercial vehicle in an electric mode, wherein chassis type power conversion becomes a mainstream technical route because loading space is not affected. This technology typically relies on an RGV rail shuttle on the ground track to handle and replace battery packs located under the truck chassis. Because the ground clearance of the battery pack under the heavy truck chassis is only about 400 mm, and the battery pack has a height of about 180 mm and overlaps the girder structure, the vertical space for the operation of the power exchange device is only about 220 mm. However, the common RGV power conversion facilities on the market are generally between 1 and 2 meters in height, which is far beyond the narrow working space. In order to complete the power exchange, the project has to adopt a scheme of digging a pit in the power exchange station, and the RGV and most of equipment are lowered below the ground level, so that the mechanical device of the RGV can be lifted and disassembled by matching the height of the battery pack. The authorized bulletin number is CN119160035A, discloses a power exchange station and a power exchange method for a chassis power exchange type electric heavy truck, and is characterized in that a rotating mechanism drives a third supporting plate and all parts on the third supporting plate, including a plurality of power scissor fork supports and a storage table, to integrally rotate around a Z axis so as to adapt to different parking deflection angles of vehicles. Each power scissor fork bracket is driven by a third power assembly, and the object placing table above the power scissor fork bracket can be independently lifted, so that the height of the battery pack can be adjusted. Each object placing table is only supported by a single power scissor fork support, and the single power scissor fork support can only provide linear motion in the vertical direction, so that the object placing table cannot be inclined. Although the plurality of object placing tables can be independently arranged at different heights, each object placing table is independent, if one battery pack is borne by a single object placing table, the battery pack cannot be inclined, if the document borne by the plurality of object placing tables together by the battery pack is not clear, the battery pack can be inclined by controlling the height difference of the different object placing tables, but at the moment, the battery pack is not rigidly fixed on a single platform, the stability is poor, and the document does not mention the coordination control, so that the battery pack does not actually have reliable Rx/Ry active adjustment capability. Because of the lack of reliable Rx/Ry active adjustment capability, there are a number of potential risks in the power change process that 1, the locking mechanism between the battery pack and the chassis, such as bolts and buckles, need to be precisely aligned. If the inclination angle of the battery pack is not parallel to the mounting surface of the chassis, the angle difference exists between the lock tongue and the lock groove, so that part of lock points are too tight and part of lock points cannot be meshed. Forced locking may deform or break the locking bolt. And the release is difficult due to uneven stress when the power is removed after the power is replaced. 2. The mismatch of the inclination angles can lead to the oblique insertion of the contact pins, the contact resistance is increased when the contact pins are light, the contact resistance is bent and broken when the contact pins are heavy, and electrical faults or safety accidents are caused. 3. Because the inclination angle cannot be actively compensated, the power conversion process depends on the absolute levelness of vehicle parking and the precision of the chassis, and the fault tolerance is extremely low. Once the inclination angle is out of tolerance, the vehicle position is required to be adjusted repeatedly or manual intervention is required, the power change time is greatly prolonged, even if the power change fails, the vehicle is required to be driven away for adjustment, and the throughput and the user experience of the power change station are seriously affected. 4. If the inclined battery pack is forcedly locked on the chassis, the battery pack structure bears continuous off-design bending moment, so that stress concentration of the battery box body or the mounting point is caused, and cracks are generated. The waterproof sealing strip between the battery pack and the chassis is compressed unevenly, and water and dust can possibly enter. D