New energy van vehicle chassis

Abstract

The invention belongs to the technical field of automobile manufacturing, and particularly relates to a new energy van vehicle chassis which comprises a chassis body, a rear anti-collision beam is installed at one end of the chassis body, a battery pack is arranged at the end, away from the rear anti-collision beam, in the chassis body, a plurality of through holes are formed in the chassis body, and two sets of lifting plates are fixed to the two sides of the battery pack. Two guide grooves are formed in the two sides in the chassis body, the lifting plates are slidably connected into the guide grooves, oil buffers are installed on the sides, away from the guide grooves, of the top ends of the lifting plates, and a camera is arranged below the battery pack. The lifting plate slides in the guide groove, the supporting spring is used for buffering, impact borne by the battery pack when the battery pack makes contact with a protruding object can be reduced, the baffle can jack up the battery pack before the battery pack makes contact with the protruding object, the battery pack slowly descends through the oil pressure buffer, and whether the bottom end of the battery pack is damaged or not is detected through the camera; and the unstable condition of the battery pack in the use process is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile manufacturing, in particular to a new energy van chassis. Background Art

[0002] Cars are a means of transportation that we often use in our lives. With the development of new energy, cars are beginning to turn to electrification, including vans. Due to the different transmission methods of new energy vehicles and oil vehicles, the internal structure of the chassis of electric vehicles will be different from that of traditional oil vehicles.

[0003] A Chinese patent with an existing announcement number of CN207683601U discloses a new energy van frame, including a zigzag frame with a compact structure, small size and light weight, which increases the cargo loading space, reduces the height of loading and unloading, and facilitates loading and unloading of cargo.

[0004] During use of the above technical solution, the vehicle needs to travel on the road. When the vehicle travels on an uneven road, the chassis is easily scratched by protruding objects on the road. The battery pack of a new energy van is usually installed in the middle of the chassis. Therefore, when the chassis is scratched, the battery pack is likely to be scratched. After multiple scratches, the battery pack may be punctured, causing an internal short circuit and fire in the battery pack, which has a greater impact on the safety of the vehicle.

[0005] To this end, the present invention provides a new energy van chassis. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a new energy van chassis described in the present invention includes a chassis body, a rear anti-collision beam is installed at one end of the chassis body, a battery pack is arranged at one end of the chassis body away from the rear anti-collision beam, a plurality of through holes are opened inside the chassis body, two groups of lifting plates are fixed on both sides of the battery pack, two groups of guide grooves are opened on both sides of the chassis body, the lifting plates are slidably connected to the inside of the guide grooves, guide columns are fixed to the inside of the guide grooves, the guide columns run through the inside of the lifting plates, a support spring is sleeved on the outside of the guide columns, the bottom end of the support spring is fixedly connected to the lifting plate, the top end of the support spring is fixedly connected to the chassis body, an oil pressure buffer is installed on the side of the top end of the lifting plate away from the guide groove, the top end of the oil pressure buffer is fixedly connected to the chassis body, a camera is arranged below the battery pack, and a baffle is fixed to the end of the battery pack away from the rear anti-collision beam.

[0008] Preferably, a guide shell is fixed on both sides of the battery pack, the guide shell is arranged below the lifting plate, a motor is installed at one end of the guide shell close to the rear anti-collision beam, a threaded rod is rotatably connected inside the guide shell, the end of the motor's rotating shaft is fixedly connected to one end of the threaded rod, a moving block is slidably connected inside the guide shell, and the moving block is threadedly connected to the threaded rod.

[0009] Preferably, a storage shell is fixed to the end of the battery pack away from the rear anti-collision beam, a plurality of teeth are arranged at equal intervals on the top of the guide shell near the side of the storage shell, an end of the moving block close to the teeth is rotatably connected to the first gear, a rotating frame is fixed to the end of the first gear away from the moving block, a baffle is fixed between the bottom ends of the two rotating frames, and a plurality of cameras are installed on the top of the baffle.

[0010] Preferably, a coil spring is fixed to the outside of the rotating shaft of the first gear, and the outer side of the coil spring is fixedly connected to the moving block. A limiting block is fixed to the end of the rotating shaft of the first gear, and a rotating groove for rotating the limiting block is opened inside the moving block. The limiting block can rotate up to 90° inside the rotating groove.

[0011] Preferably, a plurality of sponge blocks are arranged on a side of the storage shell away from the camera, and the positions and numbers of the sponge blocks match those of the cameras.

[0012] Preferably, a protective plate is provided at one end of the battery pack away from the storage shell.

[0013] Preferably, a push frame is provided on the side of the rear anti-collision beam close to the chassis body, and a telescopic rod is fixed to the side of the push frame away from the rear anti-collision beam, the telescopic rod is movably connected to the bottom end of the chassis body through a guide block, a lifting frame is provided between each group of lifting plates, the lifting frame is fixedly connected to the battery pack, movable plates are provided on both sides inside the chassis body, and a sliding hole for sliding the movable plate is provided at the bottom end of the chassis body, a second gear is meshedly connected to the side of the lifting frame close to the movable plate, the second gear is rotatably connected to the chassis body, the top of the movable plate is meshedly connected to the second gear, and a push block is fixed to the end of the movable plate close to the telescopic rod.

[0014] Preferably, a guide plate is provided on the side of the protective plate close to the battery pack, the guide plate is fixedly connected to the chassis body, pull ropes are fixed on both sides of the top of the protective plate, a guide sleeve is provided outside the pull rope, the guide sleeve is fixedly connected to the chassis body, and the other end of the pull rope is fixedly connected to the outer side of the telescopic rod.

[0015] Preferably, an insert plate is fixed to one end of the movable plate away from the push block, a card hole is opened in the middle of the insert plate, a support block is fixed to the bottom end of the chassis body, the insert plate can be plugged into the support block, the insert block is slidably connected to the inside of the support block, a first spring is fixed to the bottom end of the insert block, and the bottom end of the first spring is fixedly connected to the support block.

[0016] Preferably, a pull rod runs through the interior of the support block, and the top end of the pull rod is fixedly connected to the insert block.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The new energy van chassis described in the present invention can reduce the impact on the battery pack when it contacts the protruding object by sliding the lifting plate inside the guide groove and buffering by the supporting spring. The baffle can lift the battery pack before the battery pack contacts the protruding object and slowly lower the battery pack through the oil pressure buffer. The camera can detect whether the bottom of the battery pack is damaged, thereby reducing the instability of the battery pack during use.

[0019] 2. The new energy van chassis described in the present invention drives the push frame to move when the rear anti-collision beam is hit by a rear vehicle. The push frame pushes the push block through the telescopic rod to drive the battery pack to rise, so that the battery pack can be retracted into the interior of the chassis body. At this time, the internal structural parts of the chassis body can provide multiple buffering protections for the battery pack to reduce the occurrence of battery pack being squeezed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 It is another perspective stereogram of the present invention;

[0023] Figure 3 It is a schematic diagram of the battery pack structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the local structure of the guide shell in the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of the moving block in the present invention;

[0026] Figure 6 It is a schematic diagram of the partial structure of the chassis body in the present invention;

[0027] Figure 7 It is a schematic diagram of the internal structure of the support block in the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the movable plate in the present invention;

[0029] Fig. 9 It is a schematic diagram of the push frame structure in the present invention.

[0030] In the figure: 1. chassis body; 11. rear anti-collision beam; 12. moving plate; 121. plug plate; 122. push block; 13. support block; 131. plug block; 132. first spring; 133. pull rod; 2. battery pack; 21. lifting plate; 211. guide groove; 212. guide column; 213. support spring; 214. hydraulic buffer; 22. guide shell; 221. motor; 222. threaded rod; 223. moving block; 224. teeth; 225. coil spring; 226. limit block; 23. first gear; 231. rotating frame; 232. baffle; 233. camera; 234. sponge block; 235. storage shell; 24. lifting frame; 241. second gear; 25. baffle; 3. push frame; 31. telescopic rod; 32. protective plate; 321. guide plate; 322. pull rope. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] like Figures 1 to 4 As shown, a new energy van chassis according to an embodiment of the present invention includes a chassis body 1, a rear anti-collision beam 11 is installed at one end of the chassis body 1, a battery pack 2 is arranged at one end of the chassis body 1 away from the rear anti-collision beam 11, a plurality of through holes are opened inside the chassis body 1, two groups of lifting plates 21 are fixed on both sides of the battery pack 2, two groups of guide grooves 211 are opened on both sides of the chassis body 1, the lifting plates 21 are slidably connected to the inside of the guide grooves 211, a guide column 212 is fixed inside the guide grooves 211, and the guide column 212 penetrates Inside the lifting plate 21, a support spring 213 is sleeved on the outside of the guide column 212, the bottom end of the support spring 213 is fixedly connected to the lifting plate 21, the top end of the support spring 213 is fixedly connected to the chassis body 1, an oil pressure buffer 214 is installed on the top end of the lifting plate 21 away from the guide groove 211, the top end of the oil pressure buffer (214) is fixedly connected to the chassis body (1), a camera (233) is arranged below the battery pack (2), and a baffle (25) is fixed to the end of the battery pack (2) away from the rear anti-collision beam (11);

[0033] When the new energy van is in use, its chassis is one of the more important components. The van compartment will be installed on the top of the chassis, and the rear wheels will also be installed on both sides of the bottom plate. When in use, the battery pack 2 will be installed inside the chassis body 1. The battery pack 2 is connected to the front of the vehicle through a connecting line and supplies power to the driving motor of the front of the vehicle. The chassis body 1 is installed at the rear of the front of the vehicle. During driving, airflow can pass through the through holes opened inside the chassis body 1. When the airflow passes through, the heat generated by the battery pack 2 will be taken away, which can achieve the effect of heat dissipation. After driving to a section with an uneven road surface, a protruding object on the road surface will pass under the battery pack 2, and the higher protruding object will contact the bottom of the battery pack 2. At this time, the baffle (25) at the bottom of the battery pack 2 is pushed by the protruding object. When the baffle (25) is pushed up, it drives the battery pack 2 to rise upward. At this time, the battery pack 2 drives the lifting plates 21 on both sides to move upward. The lifting plates 21 slide inside the guide grooves 211. The guide columns 212 guide the lifting plates 21, and the support springs 213 support the lifting plates 21. The plate 21 is used for buffering, which can reduce the impact of the battery pack 2 when it is pushed up by the protruding object. At the same time, the oil pressure buffer 214 is driven by the battery pack 2 for buffering. After the oil pressure buffer 214 is subjected to the impact force, it takes a certain amount of time to recover to the initial state. During this period of time, the battery pack 2 can safely pass the protruding object. When the vehicle is driving at high speed, the air flow velocity above is faster than the air flow velocity below. Therefore, when driving at high speed, the battery pack 2 will be lifted to the inside of the chassis body 1, which can play a protective role. During driving, the wheels will splash pebbles, and the pebbles may damage the battery pack 2 by hitting it. At this time, it is necessary to detect the bottom end of the battery pack 2. Starting the camera 233 can shoot and detect the bottom end of the battery pack 2. The captured image can be used to determine whether the bottom end of the battery pack 2 is scratched or damaged, and the detection result is sent to the cab. In this way, the state of the battery pack 2 inside the chassis body 1 can be monitored in real time, and damage to the battery pack 2 can be discovered in time, reducing the occurrence of spontaneous combustion of the battery pack 2.

[0034] like Figures 1 to 4 As shown, guide shells 22 are fixed on both sides of the battery pack 2, and the guide shells 22 are arranged below the lifting plate 21. A motor 221 is installed at one end of the guide shell 22 close to the rear anti-collision beam 11. A threaded rod 222 is rotatably connected inside the guide shell 22. The end of the rotating shaft of the motor 221 is fixedly connected to one end of the threaded rod 222. A moving block 223 is slidably connected inside the guide shell 22, and the moving block 223 is threadedly connected to the threaded rod 222.

[0035] When the camera 233 needs to be inspected, the motor 221 is started to drive the threaded rod 222 to rotate. At this time, the motor 221 drives the moving block 223 to slide inside the guide shell 22. The guide shell 22 can drive the camera 233 to move during the sliding process. At this time, the camera 233 can take pictures during the movement, and the bottom end of the battery pack 2 can be inspected more comprehensively.

[0036] like Figures 1 to 4 As shown, a storage shell 235 is fixed to one end of the battery pack 2 away from the rear anti-collision beam 11, a plurality of teeth 224 are arranged at equal intervals on the top of the guide shell 22 near the storage shell 235, an end of the moving block 223 near the teeth 224 is rotatably connected to the first gear 23, an end of the first gear 23 away from the moving block 223 is fixed to a rotating frame 231, a baffle 232 is fixed between the bottom ends of the two rotating frames 231, and a plurality of cameras 233 are installed on the top of the baffle 232;

[0037] In the initial state, the camera 233 is stored inside the storage shell 235. At the same time, the baffle 232 seals the bottom end of the storage shell 235 to prevent dust from entering the storage shell 235 and affecting the camera 233. When the moving block 223 moves, it will drive the first gear 23 to move. During the movement, the first gear 23 will engage with the tooth 224. At this time, the first gear 23 can drive the rotating frame 231 to rotate downward. At this time, the rotating frame 231 drives the baffle 232 to rotate, and the baffle 232 drives the camera 233 to move out from the storage shell 235. At this time, the camera 233 can take pictures. When the shooting is completed, the motor 221 rotates in the opposite direction. At this time, the first gear 23 can drive the camera 233 to be retracted into the storage shell 235, which can facilitate the adjustment of the state of the camera 233.

[0038] like Figures 1 to 5 As shown, a coil spring 225 is fixed to the outside of the rotating shaft of the first gear 23, and the outer side of the coil spring 225 is fixedly connected to the moving block 223. A limit block 226 is fixed to the end of the rotating shaft of the first gear 23, and a rotation groove for the limit block 226 to rotate is opened inside the moving block 223. The limit block 226 can rotate up to 90° inside the rotation groove;

[0039] During the rotation of the first gear 23, the first gear 23 will drive the limit block 226 to rotate inside the moving block 223. At this time, the rotation groove inside the moving block 223 will limit the limit block 226, allowing it to rotate up to 90°. At the same time, the elastic force of the coil spring 225 will drive the first gear 23 to maintain a stable state, preventing the first gear 23 from rotating during the movement of the camera 233, resulting in failure to shoot normally.

[0040] like Figures 1 to 4As shown, a plurality of sponge blocks 234 are arranged inside the storage shell 235 on a side away from the camera 233, and the positions and numbers of the sponge blocks 234 match those of the camera 233;

[0041] Each time the camera 233 moves in and out of the storage shell 235, the camera 233 moves a certain distance inside the storage shell 235. At this time, the sponge block 234 can wipe the front end of the camera 233 lens to prevent water and dust from falling onto the camera 233 lens at the bottom of the battery pack 2 during the detection process, resulting in unclear images taken by the camera 233.

[0042] like Figures 1 to 9 As shown, a protective plate 32 is provided at one end of the battery pack 2 away from the storage shell 235;

[0043] During driving, the vehicle may be rear-ended. In this case, the rear anti-collision beam 11 will be hit by the rear vehicle. There may be sharp objects on the front of the rear vehicle. When the sharp objects touch the battery pack 2, there is a certain probability that the battery pack 2 will be pierced. At this time, the battery pack 2 will be short-circuited and catch fire. A protective plate 32 is provided at the rear of the battery pack 2 to shield the rear of the battery pack 2 when it is hit, and to buffer the force of the impact of the sharp object, thereby reducing the probability of the battery pack 2 being pierced.

[0044] like Figures 1 to 9 As shown, a push frame 3 is provided on the side of the rear anti-collision beam 11 close to the chassis body 1, and a telescopic rod 31 is fixed on the side of the push frame 3 away from the rear anti-collision beam 11, and the telescopic rod 31 is movably connected to the bottom end of the chassis body 1 through a guide block, and a lifting frame 24 is provided between each group of lifting plates 21, and the lifting frame 24 is fixedly connected to the battery pack 2, and a movable plate 12 is provided on both sides of the inside of the chassis body 1, and a sliding hole for sliding the movable plate 12 is provided at the bottom end of the chassis body 1, and a second gear 241 is meshed and connected on the side of the lifting frame 24 close to the movable plate 12, and the second gear 241 is rotatably connected to the chassis body 1, and the top of the movable plate 12 is meshed and connected with the second gear 241, and a push block 122 is fixed on the end of the movable plate 12 close to the telescopic rod 31;

[0045] When the rear anti-collision beam 11 is hit, in order to prevent the battery pack 2 from being hit by the rear vehicle, a push frame 3 is set. When the rear anti-collision beam 11 is deformed by the impact, the push frame 3 will be pushed to move. At this time, the push frame 3 pushes the telescopic rod 31. When the impact force is low, the push frame 3 will first move a distance. During this distance, the push frame 3 and the push block 122 are not in contact. When the impact force is large, the telescopic rod 31 pushes the push block 122 to drive the moving plate 12 to move. At this time, the moving plate 12 drives the second gear 241 to rotate. At this time, the second gear 241 also drives the lifting frame 24 to move upward. The lifting frame 24 will also drive the battery pack 2 to move upward. At this time, the battery pack 2 can be retracted into the interior of the chassis body 1. At this time, the battery pack 2 will be placed in the middle of the chassis body 1. The chassis body 1 has many internal structural parts. When it is hit, the structural parts can provide buffering to a greater extent, reducing the possibility of the battery pack 2 being squeezed.

[0046] like Figures 1 to 9 As shown, a guide plate 321 is provided on one side of the protective plate 32 close to the battery pack 2, the guide plate 321 is fixedly connected to the chassis body 1, a pull rope 322 is fixed on both sides of the top of the protective plate 32, a guide sleeve is provided outside the pull rope 322, the guide sleeve is fixedly connected to the chassis body 1, and the other end of the pull rope 322 is fixedly connected to the outer side of the telescopic rod 31;

[0047] During the movement of the telescopic rod 31, the pull rope 322 is in a loose state. When the telescopic rod 31 contacts the push block 122, the pull rope 322 is tightened. Then when the telescopic rod 31 continues to move, the pull rope 322 pulls the protective plate 32 up, and the protective plate 32 rises together with the battery pack 2. At this time, the protective plate 32 can always shield and protect the rear of the battery pack 2, thereby protecting the battery pack 2 to a greater extent.

[0048] like Figures 1 to 9 As shown, an insert plate 121 is fixed to one end of the movable plate 12 away from the push block 122, a card hole is opened in the middle of the insert plate 121, a support block 13 is fixed to the bottom end of the chassis body 1, the insert plate 121 can be plugged with the support block 13, the support block 13 is slidably connected with the insert block 131 inside, a first spring 132 is fixed to the bottom end of the insert block 131, and the bottom end of the first spring 132 is fixedly connected to the support block 13;

[0049] When the movable plate 12 is pushed, the movable plate 12 will drive the plug plate 121 to be inserted into the interior of the supporting block 13. At this time, the plug block 131 is pushed downward by the plug plate 121. When the plug plate 121 is completely inserted into the interior of the supporting block 13, the plug block 131 can be pushed up and inserted into the card hole of the plug plate 121 by the elastic force of the first spring 132. At this time, the plug plate 121 can be fixed, and the movable plate 12 can be fixed at the same time. After the movable plate 12 is fixed, the second gear 241 can be stuck to prevent the battery pack 2 from falling again after being retracted into the interior of the chassis body 1.

[0050] like Figures 1 to 9 As shown, a pull rod 133 runs through the interior of the support block 13, and the top end of the pull rod 133 is fixedly connected to the insert block 131;

[0051] When the vehicle is subsequently processed, the battery pack 2 needs to be removed or reset. At this time, pulling the pull rod 133 can drive the plug block 131 to move out of the card hole of the plug plate 121. At this time, the movable plate 12 resumes movement, allowing the battery pack 2 to be reset, which is convenient for subsequent repair or use.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A new energy van chassis, characterized by: The invention comprises a chassis body (1), a rear anti-collision beam (11) is installed at one end of the chassis body (1), a battery pack (2) is arranged at one end of the chassis body (1) away from the rear anti-collision beam (11), a plurality of through holes are opened inside the chassis body (1), two groups of lifting plates (21) are fixed on both sides of the battery pack (2), two groups of guide grooves (211) are opened on both sides of the chassis body (1), the lifting plates (21) are slidably connected to the inside of the guide grooves (211), a guide column (212) is fixed inside the guide grooves (211), and the guide column (212) passes through the lifting plates (211). The guide column (212) is provided with a support spring (213) on the inside, the guide column (212) is provided with a support spring (213) on the outside, the bottom end of the support spring (213) is fixedly connected to the lifting plate (21), the top end of the support spring (213) is fixedly connected to the chassis body (1), a hydraulic buffer (214) is installed on the side of the top end of the lifting plate (21) away from the guide groove (211), the top end of the hydraulic buffer (214) is fixedly connected to the chassis body (1), a camera (233) is provided below the battery pack (2), and a baffle (25) is fixed to the end of the battery pack (2) away from the rear anti-collision beam (11).

2. The new energy van chassis according to claim 1 is characterized in that: A guide shell (22) is fixed on both sides of the battery pack (2), the guide shell (22) is arranged below the lifting plate (21), a motor (221) is installed at one end of the guide shell (22) close to the rear anti-collision beam (11), a threaded rod (222) is rotatably connected inside the guide shell (22), a rotating shaft end of the motor (221) is fixedly connected to one end of the threaded rod (222), a moving block (223) is slidably connected inside the guide shell (22), and the moving block (223) is threadedly connected to the threaded rod (222).

3. The new energy van chassis according to claim 2 is characterized by: A storage shell (235) is fixed to one end of the battery pack (2) away from the rear anti-collision beam (11); a plurality of teeth (224) are arranged at equal intervals on one side of the top end of the guide shell (22) close to the storage shell (235); an end of the moving block (223) close to the teeth (224) is rotatably connected to a first gear (23); a rotating frame (231) is fixed to one end of the first gear (23) away from the moving block (223); a baffle (232) is fixed between the bottom ends of the two rotating frames (231); and a plurality of cameras (233) are mounted on the top of the baffle (232).

4. The new energy van chassis according to claim 3 is characterized by: A coil spring (225) is fixed to the outside of the rotating shaft of the first gear (23), and the outer side of the coil spring (225) is fixedly connected to the moving block (223). A limit block (226) is fixed to the end of the rotating shaft of the first gear (23), and a rotation groove for the limit block (226) to rotate is provided inside the moving block (223), and the limit block (226) can rotate up to 90 degrees inside the rotation groove.

5. The new energy van chassis according to claim 4 is characterized in that: A plurality of sponge blocks (234) are arranged inside the storage shell (235) on a side away from the camera (233), and the positions and numbers of the sponge blocks (234) match those of the camera (233).

6. The new energy van chassis according to claim 1 is characterized by: A protective plate (32) is provided at one end of the battery pack (2) away from the storage shell (235).

7. The new energy van chassis according to claim 6 is characterized by: A push frame (3) is arranged on the side of the rear anti-collision beam (11) close to the chassis body (1), and a telescopic rod (31) is fixed on the side of the push frame (3) away from the rear anti-collision beam (11). The telescopic rod (31) is movably connected to the bottom end of the chassis body (1) through a guide block. A lifting frame (24) is arranged between each group of lifting plates (21). The lifting frame (24) is fixedly connected to the battery pack (2). Both sides of the chassis body (1) are arranged with a movable plate (12). A sliding hole for sliding the movable plate (12) is provided at the bottom end of the chassis body (1). A second gear (241) is meshedly connected to the side of the lifting frame (24) close to the movable plate (12). The second gear (241) is rotatably connected to the chassis body (1). The top end of the movable plate (12) is meshedly connected to the second gear (241). A push block (122) is fixed to one end of the movable plate (12) close to the telescopic rod (31).

8. The new energy van chassis according to claim 7 is characterized by: A guide plate (321) is provided on one side of the protective plate (32) close to the battery pack (2), the guide plate (321) is fixedly connected to the chassis body (1), a pull rope (322) is fixed on both sides of the top of the protective plate (32), a guide sleeve is provided outside the pull rope (322), the guide sleeve is fixedly connected to the chassis body (1), and the other end of the pull rope (322) is fixedly connected to the outer side of the telescopic rod (31).

9. The new energy van chassis according to claim 8 is characterized by: An inserting plate (121) is fixed to one end of the movable plate (12) away from the pushing block (122), a clamping hole is provided in the middle of the inserting plate (121), a supporting block (13) is fixed to the bottom end of the chassis body (1), the inserting plate (121) can be plugged into the supporting block (13), the inside of the supporting block (13) is slidably connected with the inserting block (131), a first spring (132) is fixed to the bottom end of the inserting block (131), and the bottom end of the first spring (132) is fixedly connected to the supporting block (13).

10. The new energy van chassis according to claim 9, characterized in that: A pull rod (133) runs through the interior of the support block (13), and the top end of the pull rod (133) is fixedly connected to the insert block (131).

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