Dual-temperature cold storage refrigerator truck

Abstract

The present application relates to the technical field of refrigerated trucks, in particular to a double-temperature cold storage type refrigerated truck, which comprises a vehicle body, one side of the vehicle body is provided with a vehicle compartment body, the inside of the vehicle compartment body is provided with a mounting seat and a partition plate, one side of the partition plate is provided with a plurality of groups of cold storage plates, one side of the vehicle compartment body is hinged with two groups of vehicle compartment doors, the inside of the mounting seat is provided with a protection assembly, at least two groups of ramp assemblies and at least two groups of auxiliary assemblies. The three-stage locking structure composed of the clamping rod, the protection assembly and the fixing seat can be used for grading unlocking and stroke limiting of the sliding block and the guide plate, so as to avoid the situation that the ramp suddenly pops out and hits the personnel, and improve the operation safety. At the same time, the clamping rod is used to realize the effects of door locking and automatic unlocking, so as to prevent the sliding block and the guide plate from shifting during driving, and the device is installed in a hidden bottom mode, so as to not occupy the loading space, thereby adapting to the loading and unloading conditions of the double-temperature cold storage compartment.

Description

Technical Field

[0001] This invention relates to the field of refrigerated trucks, and more particularly to a dual-temperature storage refrigerated truck. Background Technology

[0002] Refrigerated transport trucks are generally equipped with loading and unloading ramps to connect the truck bed with the ground and loading / unloading platforms, facilitating forklift and material transfer. Currently, the mainstream types on the market are hydraulically driven tailgates and manually pulled-out ramps. Hydraulic tailgates rely on motors and hydraulic cylinders to lift and tilt, offering strong load-bearing capacity, but their complex structure and high purchase and maintenance costs make them vulnerable. Under low-temperature refrigeration conditions, the viscosity of the hydraulic oil increases, leading to insufficient lifting power and sealing leaks. Furthermore, they rely on the vehicle's power supply, rendering them unusable after a power outage. Manually pulled-out ramps have no hydraulic or electrical components, offering high reliability, but they rely entirely on manual dragging and pushing for extension and retraction. Large ramps are heavy, resulting in high labor intensity for workers. The lack of auxiliary door opening assists also leads to low loading and unloading efficiency. Both types of products have safety shortcomings: automatic hydraulic tailgates lower completely with a single button, and their rapid movement can easily cause collisions with personnel; ordinary pull-out ramps lack segmented limit structures, and if spring-assisted extension is added, there is a risk of sudden impact and injury.

[0003] Among existing patents, CN210170312U discloses a manually pull-out vehicle ramp for disabled persons. It uses a base plate with sliding rollers for pulling and moving, relying entirely on manual dragging and pushing, with simple support feet for ramp support. This solution only optimizes sliding friction resistance, lacks an elastic ejection assist structure, and does not include a door-linked locking component. The opening and closing of the vehicle door and the locking / unlocking of the ramp are independent, and the ramp cannot be automatically locked when the door is closed. This poses a risk of slippage, abnormal noise, and movement of the ramp during travel. Furthermore, the overall design lacks a tiered blocking and limiting structure; if a spring is added for ejection, there is no buffer protection, resulting in significant safety hazards. Moreover, the structural dimensions are suitable for small passenger vehicles with pedestrian access, and the load-bearing capacity is insufficient for heavy-duty loading and unloading scenarios involving trucks and forklifts.

[0004] Another comparative patent, CN221073271U, discloses a fixed, integrated push-pull barrier-free ramp. This structure is mainly used for barrier-free access on building stairs, employing a three-section push-pull structure for telescopic positioning. However, this solution is not suitable for loading and unloading refrigerated trucks. It lacks a locking structure linked to the truck door, making it impossible to link door opening and closing with ramp locking and unlocking. This can easily lead to slippage and loosening while the vehicle is in motion.

[0005] In summary, current loading and unloading ramps and related patented solutions all have significant technical flaws and cannot meet the requirements of refrigerated vehicles. Traditional hydraulic tailgates are not resistant to low temperatures, have complex structures, and are costly to use. Ordinary manual ramps are time-consuming and labor-intensive. Various improvement solutions generally lack linkage locking and graded protection designs, resulting in not only low loading and unloading efficiency but also significant safety hazards. Summary of the Invention

[0006] The main objective of this invention is to provide a dual-temperature storage refrigerated truck, which aims to solve the problems of easy failure on loading and unloading ramps, laborious operation, and unreliable vehicle locking in existing refrigerated trucks.

[0007] To achieve the above objectives, the present invention proposes a dual-temperature cold storage refrigerated truck, comprising a vehicle body, a cargo compartment body disposed on one side of the vehicle body, an installation seat and a partition plate disposed inside the cargo compartment body, two sets of cargo compartment doors hinged to one side of the cargo compartment body, a locking rod disposed on one side of each cargo compartment door, and the partition plate dividing the internal space of the cargo compartment body into two parts, thereby enabling dual-temperature storage, multiple sets of cold storage plates disposed on one side of the partition plate, and at least two sets of ramp assemblies, each ramp assembly comprising a slider, a guide plate, a drive assembly, a retraction assembly and two sets of fixing seats, wherein the slider is slidably disposed inside the installation seat, the guide plate is slidably disposed inside the slider, and a movable shaft is rotatably disposed on one side of the guide plate. The fixed seat is located inside the mounting base and is used to lock the slider and guide plate. The driving component and the retraction component are both located inside the guide plate. The retraction component is used to release the fixed seat from limiting the slider, while the driving component is used to drive the retraction component to run. There are at least two sets of auxiliary components. The auxiliary components are located inside the mounting base and are used to drive the unlocked slider and guide plate to pop outward. There is a protective component. The protective component is located inside the mounting base and is used to perform secondary locking and limiting of the ramp component. The locking roller constitutes the first locking structure. The locking roller, the protective component, and the fixed seat form a triple locking structure from the outside to the inside, which limits the unlocking and popping stroke of the slider and guide plate step by step.

[0008] Preferably, the drive assembly includes a rotating column and two sets of mounting discs. The rotating column is rotatably disposed inside the guide plate, and a first bevel gear is disposed on the outer side of the rotating column. The mounting discs are fixedly disposed inside the guide plate. A connecting shaft is rotatably disposed inside the two sets of mounting discs. A second bevel gear is disposed at one end of the connecting shaft, and the second bevel gear meshes with the first bevel gear. A first threaded tube is fixedly disposed at the other end of the connecting shaft. A sleeve is screwed onto the outer side of the first threaded tube. Two sets of fixing brackets are disposed on the outer side of the sleeve. The side of each of the two sets of fixing brackets away from the sleeve is fixedly disposed with a horizontal plate. Two sets of support seats are disposed on one side of the horizontal plate. A second rack is disposed inside the support seat, and the second rack meshes with one side of the retraction assembly.

[0009] Preferably, the shrinking assembly includes a support column, which is rotatably disposed inside the guide plate. Two sets of second gears are disposed on the outer side of the support column, and the second gears mesh with the second rack. A turntable is disposed on the outer side of the support column, and two sets of connecting ropes are disposed inside the turntable. A locking block is disposed at the end of the connecting rope away from the turntable, and the side of the locking block away from the connecting rope passes through the guide plate and the slider.

[0010] Preferably, the guide plate has two sets of fixed plates inside, and a balance bar is provided on both sides of the fixed plates. A movable plate is provided on both sides of the locking block, and the movable plate is slidably disposed on the outside of the balance bar.

[0011] Preferably, a placement plate is provided on the outer side of the balance bar, a movable plate is slidably provided on the outer side of the balance bar, and a first spring is provided between the movable plate and the placement plate.

[0012] Preferably, the auxiliary component includes a fixed plate, with two sets of guide rods slidably disposed inside the fixed plate. One end of each set of guide rods is fixedly disposed to a sliding seat. Two sets of placement seats are disposed on one side of the sliding seat. A central shaft is disposed between the two sets of placement seats. A pulley is rotatably disposed on the outer side of the central shaft, and the outer side of the pulley contacts the slider. A push plate is slidably disposed on the outer side of the guide rod. A third spring is disposed between the push plate and the fixed plate. A support plate is disposed on the outer side of the guide rod, and the support plate is located on the side of the fixed plate away from the third spring.

[0013] Preferably, the protective assembly includes a connecting rod and two sets of fixing columns. The connecting rod is rotatably disposed inside the mounting base, and the fixing columns are fixedly disposed inside the mounting base. Rollers are rotatably disposed on the outer side of the fixing columns. One end of the connecting rod is provided with a second threaded tube, and a movable tube is screwed onto the outer side of the second threaded tube. Two sets of movable frames are provided on the outer side of the movable tube. One side of each set of movable frames is fixedly disposed with a movable plate. Two sets of positioning shafts are provided on one side of the movable plate. A swing plate is rotatably disposed on the outer side of the positioning shaft. A fixed shaft is slidably disposed on the side of the swing plate away from the positioning shaft. Mounting plates are provided at both ends of the fixed shaft. One side of each set of mounting plates is fixedly disposed with a fixing block. A clamping plate is provided on one side of the fixing block.

[0014] Preferably, the mounting base has two sets of mounting brackets inside, a balance column is fixedly installed inside the card plate, a movable disk is slidably installed on the outside of the balance column, a fourth spring is installed on one side of the movable disk, and the end of the fourth spring away from the movable disk is fixedly installed with the card plate.

[0015] Preferably, a handle is provided at one end of the rotating column, a first gear is provided on the outside of the handle, a first rack is slidably provided inside the guide plate and meshes with the first gear, a plurality of second springs are provided on one side of the first rack, the end of the second spring away from the first rack is fixedly provided inside the guide plate, and two baffles are provided inside the guide plate and the baffles are in contact with the first rack.

[0016] Preferably, one end of the connecting rod is provided with a handle, the outer side of the handle is provided with a third gear, a support plate is fixedly provided inside the mounting base, two sets of parallel rods are slidably provided inside the support plate, one end of each set of parallel rods is fixedly provided with a third rack, the third rack and the third gear mesh, and a fifth spring is fixedly provided between the third rack and the support plate.

[0017] In the technical solution of this invention, the dual-temperature cold storage refrigerated truck has a triple-level locking structure consisting of a locking roller, a protective component, and a fixing seat. This structure enables the slider and guide plate to be unlocked and their travel limited in stages, thereby preventing them from being ejected and hitting personnel on slopes and improving operational safety. At the same time, the locking roller enables the door to lock automatically when closed and unlock automatically when opened, preventing the slider and guide plate from shifting or deviating during driving. Furthermore, the device is installed in a bottom-concealed manner, which does not occupy cargo space, thus making it suitable for loading and unloading operations of dual-temperature cold storage truck compartments. Attached Figure Description

[0018] 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a dual-temperature storage refrigerated truck according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the dual-temperature cold storage refrigerated truck with the door open in an embodiment of the present invention; Figure 3 This is a schematic diagram of the mounting base and partition plate of the dual-temperature cold storage refrigerated truck according to an embodiment of the present invention; Figure 4 This is a structural cross-sectional view of the dual-temperature cold storage refrigerated truck mounting base according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the dual-temperature cold storage refrigerated truck ramp assembly according to an embodiment of the present invention; Figure 6This is a cross-sectional view of the slider and guide plate of the dual-temperature cold storage refrigerated truck according to an embodiment of the present invention; Figure 7 This is a partial structural schematic diagram of the dual-temperature cold storage refrigerated truck ramp assembly according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the cross panel of the dual-temperature cold storage refrigerated truck according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the support column and support base of the dual-temperature cold storage refrigerated truck according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the support column of the dual-temperature cold storage refrigerated truck according to an embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of the first rack of the dual-temperature cold storage refrigerated truck according to an embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of the auxiliary components of the dual-temperature cold storage refrigerated truck according to an embodiment of the present invention; Figure 13 This is a schematic diagram of the structure of the dual-temperature cold storage refrigerated truck protection component according to an embodiment of the present invention; Figure 14 This is a partial structural schematic diagram of the dual-temperature cold storage refrigerated truck protective assembly according to an embodiment of the present invention; Figure 15 This is a cross-sectional view of the structure of the dual-temperature cold storage refrigerated truck pallet according to an embodiment of the present invention; Figure 16 This is a schematic diagram of the third rack of a dual-temperature storage refrigerated truck according to an embodiment of the present invention.

[0020] Reference numerals: 1. Vehicle body; 2. Ramp assembly; 201. Slider; 202. Fixing seat; 203. Guide plate; 204. First rack; 205. Movable shaft; 206. Locking block; 207. Support seat; 208. Mounting plate; 209. Handle; 210. First gear; 211. Disc; 212. First bevel gear; 213. Rotating column; 214. Second bevel gear; 215. Connecting shaft; 216. Connecting frame; 217. Fixing... 218. Fixed frame; 219. Second rack; 220. Sleeve; 221. First threaded tube; 222. Horizontal plate; 222. Fixed plate; 223. Moving plate; 224. Balance bar; 225. Second gear; 226. Rotating disk; 227. Buffer pad; 228. Support column; 229. Placement plate; 230. First spring; 231. Turntable; 232. Connecting rope; 233. Movable disk; 234. Baffle; 235. Second spring; 3. Auxiliary components 301. Fixed plate; 302. Third spring; 303. Sliding seat; 304. Placement seat; 305. Central shaft; 306. Pulley; 307. Push plate; 308. Support plate; 309. Guide rod; 4. Protective components; 401. Movable plate; 402. Fixed column; 403. Mounting plate; 404. Fixed shaft; 405. Fixed block; 406. Handle; 407. Third rack; 408. Clamping plate; 409. Third gear; 410. 411. Movable frame; 412. Connecting rod; 413. Movable tube; 414. Second threaded tube; 415. Swing plate; 416. Positioning shaft; 417. Roller; 418. Mounting bracket; 419. Moving plate; 420. Fourth spring; 421. Balance column; 422. Support plate; 423. Fifth spring; 424. Parallel rod; 5. Car door; 6. Car body; 7. Mounting seat; 8. Clamping roller; 9. Cooling plate; 10. Divider plate; 11. Dust cover.

[0021] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0024] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0026] This invention provides a dual-temperature cold storage refrigerated truck.

[0027] like Figures 1 to 16 As shown, the dual-temperature cold storage refrigerated truck provided in this embodiment of the invention includes a vehicle body 1, a cargo box body 6 is provided on one side of the vehicle body 1, a mounting seat 7 and a partition plate 10 are provided inside the cargo box body 6, the partition plate 10 divides the space inside the cargo box body 6 into two parts, a plurality of cold storage plates 9 are provided on one side of the partition plate 10, two sets of cargo box doors 5 are hinged to one side of the cargo box body 6, a locking rod 8 is provided on one side of the cargo box door 5, the locking rod 8 is a first locking structure, a protective component 4, at least two sets of ramp components 2 and at least two sets of auxiliary components 3 are provided inside the mounting seat 7, and two sets of dust covers 11 are snapped onto one side of the mounting seat 7.

[0028] like Figures 4 to 11 As shown, the ramp assembly 2 includes a slider 201, a guide plate 203, a drive assembly, a retraction assembly, and two sets of fixed seats 202. The slider 201 is slidably connected inside the mounting seat 7, and the guide plate 203 is slidably connected inside the slider 201. A movable shaft 205 is rotatably connected to one side of the guide plate 203, and both ends of the movable shaft 205 are slidably connected inside the slider 201. The drive assembly and the retraction assembly are both located inside the guide plate 203.

[0029] The drive assembly includes a rotating column 213 and two sets of mounting plates 208. The rotating column 213 is rotatably connected to the inside of the guide plate 203. A disc 211 is fixedly connected to the outside of the rotating column 213. The disc 211 is located inside the guide plate 203 and can prevent the rotating column 213 from detaching from the guide plate 203. A first bevel gear 212 is fixedly connected to the outside of the rotating column 213, and a handle 209 is fixedly connected to one end of the rotating column 213. A first gear 210 is fixedly connected to the outside of the handle 209. The handle 209 is embedded inside the guide plate 203. The mounting plates 208 are located inside the guide plate 203. Connecting brackets 216 are fixedly connected to both sides of the mounting plates 208. The side of the connecting bracket 216 away from the mounting plate 208... Fixedly connected inside the guide plate 203, the two sets of mounting discs 208 are rotatably connected to a connecting shaft 215. One end of the connecting shaft 215 is fixedly connected to a second bevel gear 214, and the second bevel gear 214 meshes with a first bevel gear 212. The end of the connecting shaft 215 away from the second bevel gear 214 is fixedly connected to a first threaded tube 220. A sleeve 219 is screwed onto the outside of the first threaded tube 220. Two sets of fixing brackets 217 are fixedly connected to the outside of the sleeve 219. The side of the two sets of fixing brackets 217 away from the sleeve 219 is fixedly connected to a horizontal plate 221. Two sets of support seats 207 are fixedly connected to one side of the horizontal plate 221. A second rack 218 is fixedly connected inside the support seat 207, and the second rack 218 meshes with one side of the shrink assembly.

[0030] Specifically, to prevent the handle 209 from rotating when not in use, a first rack 204 is slidably connected inside the guide plate 203, and the first rack 204 meshes with the first gear 210. Multiple sets of second springs 235 are fixedly connected to one side of the first rack 204. The end of the second spring 235 away from the first rack 204 is fixedly connected inside the guide plate 203. Two sets of baffles 234 are fixedly connected inside the guide plate 203, and the baffles 234 contact the first rack 204. The baffles 234 are used to restrict the direction of the first rack 204. When the first rack 204 meshes with the first gear 210, the handle 209 cannot rotate. When the first rack 204 is moved to disengage from the first gear 210, the handle 209 is no longer restricted, and the handle 209 can be rotated at this time.

[0031] The retraction assembly includes a support column 228, which is rotatably connected to the inside of a guide plate 203. Two sets of rotating disks 226 are fixedly connected to the outside of the support column 228. The rotating disks 226 are used to restrict the support column 228 and prevent it from detaching from the guide plate 203. Two sets of second gears 225 are fixedly connected to the outside of the support column 228, and the second gears 225 mesh with the second rack 218. A turntable 231 is fixedly connected to the outside of the support column 228. Two sets of connecting ropes 232 are wound and fixedly connected inside the turntable 231. A locking block 206 is fixedly connected to the end of the connecting rope 232 away from the turntable 231. One side of the rope 232 passes through the guide plate 203 and the slider 201. Two sets of fixed plates 222 are fixedly connected inside the guide plate 203. Balance bars 224 are fixedly connected to both sides of the fixed plates 222. Movable plates 223 are fixedly connected to both sides of the locking block 206. The movable plates 223 are slidably connected to the outside of the balance bars 224. A placement plate 229 and a buffer pad 227 are fixedly connected to the outside of the balance bars 224. A movable plate 233 is slidably connected to the outside of the balance bars 224. A first spring 230 is fixedly connected between the movable plate 233 and the placement plate 229. The buffer pad 227 is located on the side of the movable plate 223 away from the first spring 230.

[0032] The fixing seat 202 is fixedly connected to the inside of the guide plate 203, and the two sets of fixing seats 202 are located on both sides of the slider 201 respectively. The locking block 206 is parallel to the fixing seat 202. The fixing seat 202 provides a third locking for the slider 201 and the guide plate 203. After the locking block 206 and the fixing seat 202 are released, the slider 201 and the guide plate 203 can be unfolded.

[0033] After turning the handle 209, the handle 209 will drive the rotating column 213 to rotate. The rotation of the rotating column 213 will drive the first bevel gear 212 to rotate. The rotation of the first bevel gear 212 will drive the second bevel gear 214 to rotate. The rotation of the second bevel gear 214 will drive the first threaded tube 220 to rotate by driving the connecting shaft 215 to rotate. The rotation of the first threaded tube 220 will drive the sleeve 219 to move linearly. The displacement of the sleeve 219 will push the horizontal plate 221 to move by pushing the fixing bracket 217. The displacement of the horizontal plate 221 will push the support... The displacement of the support seat 207 will push the second rack 218 to move, and the displacement of the second rack 218 will push the second gear 225 to rotate. The rotation of the second gear 225 will drive the turntable 231 to rotate by driving the support column 228 to rotate. The rotation of the turntable 231 will retract the connecting rope 232. At this time, one end of the connecting rope 232 will pull the locking block 206 to move horizontally. At this time, the locking block 206 will enter the interior of the guide plate 203 and will no longer be parallel to the fixed seat 202. Then the slider 201 and the guide plate 203 can pass through the fixed seat 202.

[0034] like Figure 4 and Figure 12 As shown, auxiliary component 3 includes a fixed plate 301. Two sets of guide rods 309 are slidably connected inside the fixed plate 301. One end of each set of guide rods 309 is fixedly connected to a sliding seat 303. Two sets of placement seats 304 are fixedly connected to one side of the sliding seat 303. A central shaft 305 is fixedly connected between the two sets of placement seats 304. A pulley 306 is rotatably connected to the outside of the central shaft 305, and the outside of the pulley 306 contacts the slider 201. A push plate 307 is slidably connected to the outside of the guide rods 309. The push plate 307 and the fixed plate 309 are slidably connected to the guide rods 309. A third spring 302 is fixedly connected between the plates 301. A support plate 308 is fixedly connected to the outside of the guide rod 309. The support plate 308 is located on the side of the fixed plate 301 away from the third spring 302. When the slider 201 returns to the inside of the mounting base 7, the third spring 302 will be squeezed by the push plate 307. When the slider 201 is no longer locked, the third spring 302 will bounce the slider 201 to the outside of the mounting base 7 by bouncing the push plate 307 and the sliding seat 303, thereby speeding up the work of unfolding the ramp.

[0035] like Figure 4 , Figure 13 , Figure 14 , Figure 15 and Figure 16As shown, the protective component 4 includes a connecting rod 411 and two sets of fixing posts 402. The connecting rod 411 is rotatably connected to the inside of the mounting base 7. One end of the connecting rod 411 is fixedly connected to a handle 406, which is embedded inside the mounting base 7. The fixing posts 402 are fixedly connected to the inside of the mounting base 7, and rollers 416 are rotatably connected to the outer side of the fixing posts 402. The end of the connecting rod 411 away from the handle 406 is fixedly connected to a second threaded tube 413. A movable tube 412 is screwed onto the outer side of the second threaded tube 413. Two sets of movable frames 410 are fixedly connected to the outer side of the movable tube 412. One side of each set of movable frames 410 is fixedly connected to a movable plate 401. Two sets of positioning shafts 415 are fixedly connected to one side of the movable plate 401. A swing plate 4 is rotatably connected to the outer side of the positioning shafts 415. 14. The swing plate 414 is inclined, and one side of the swing plate 414 is in contact with the roller 416. The roller 416 can guide the swing plate 414. The side of the swing plate 414 away from the positioning shaft 415 is slidably connected to the fixed shaft 404. Both ends of the fixed shaft 404 are fixedly connected to the mounting plate 403. One side of both sets of mounting plates 403 is fixedly connected to the fixed block 405. One side of the fixed block 405 is fixedly connected to the locking plate 408. The locking plate 408 is a second locking mechanism. The mounting base 7 is provided with two sets of mounting brackets 417. The locking plate 408 is fixedly provided with the balance column 420. The outside of the balance column 420 is slidably provided with the moving plate 418. One side of the moving plate 418 is provided with the fourth spring 419. The end of the fourth spring 419 away from the moving plate 418 is fixedly provided with the locking plate 408.

[0036] Specifically, to prevent the grip 406 from rotating when not in use, a third gear 409 is fixedly connected to the outside of the grip 406, and a support plate 421 is fixedly connected inside the mounting base 7. Two sets of parallel rods 423 are slidably connected inside the support plate 421, and one end of each set of parallel rods 423 is fixedly connected to a third rack 407. The third rack 407 and the third gear 409 mesh, and a fifth spring 422 is fixedly connected between the third rack 407 and the support plate 421. Thus, when the third rack 407 and the third gear 409 are meshed, the grip 406 will be fixed and cannot rotate. After moving the third rack 407 to disengage it from the third gear 409, the grip 406 is no longer restricted, and the grip 406 can then be rotated.

[0037] After the slider 201 and guide plate 203 are released from the first lock, the slider 201 and guide plate 203 will be blocked by the locking plate 408, thereby preventing the guide plate 203 and slider 201 from being ejected too quickly and hitting unsuspecting operators.

[0038] When the second lock needs to be released, rotate the handle 406 to make the connecting rod 411 rotate. The rotation of the connecting rod 411 will drive the second threaded tube 413 to rotate. The rotation of the second threaded tube 413 will drive the movable tube 412 to move linearly. The displacement of the movable tube 412 will push the movable plate 401 to move by pushing the movable frame 410. The displacement of the movable plate 401 will push the positioning shaft 415 to move. The displacement of the positioning shaft 415 will push the swing plate 414. At this time, the swing plate 414 will swing around the positioning shaft 415 as the axis. The swing of the swing plate 414 will push the fixed shaft 404 to move horizontally. At this time, the two sets of fixed shafts 404 will move relative to each other. The displacement of the fixed shaft 404 will push the fixed block 405 to move by pushing the mounting plate 403. The displacement of the fixed block 405 will push the locking plate 408 to move and enter the mounting base 7. At this time, the locking plate 408 will no longer block the slider 201 and the guide plate 203, and the second lock is released.

[0039] This dual-temperature refrigerated truck features a triple-locking structure consisting of a locking roller 8, a protective component 4, and a fixing base 202. This structure allows for graded unlocking and travel restriction of the slider 201 and guide plate 203, preventing them from suddenly ejecting and impacting personnel on slopes and improving operational safety. Furthermore, the locking roller 8 enables self-locking when closing and automatic unlocking when opening, preventing the slider 201 and guide plate 203 from shifting or deviating during operation. The device is also installed in a concealed bottom configuration, eliminating the need for cargo space and making it suitable for loading and unloading operations in dual-temperature refrigerated truck compartments.

[0040] In use, opening the carriage door 5 will cause the locking roller 8 to move, preventing it from pressing against the guide plate 203. This releases the first layer of locking between the guide plate 203 and the slider 201. The third spring 302 will then spring the slider 201 outwards from the mounting base 7 by actuating the push plate 307 and the sliding seat 303. The slider 201 will then be blocked by the locking plate 408, entering the second layer of locking. Turning the handle 406 will then rotate the connecting rod 411. This rotation will cause the second threaded tube 413 to rotate, which in turn will cause the movable tube 412 to move linearly. The displacement of the movable tube 412 will be achieved by pushing... The movable frame 410 pushes the movable plate 401 to move, and the movement of the movable plate 401 will push the positioning shaft 415 to move. The movement of the positioning shaft 415 will push the swing plate 414. At this time, the swing plate 414 will swing around the positioning shaft 415 as the axis. The swing of the swing plate 414 will push the fixed shaft 404 to move horizontally. At this time, the two sets of fixed shafts 404 will move towards each other. The movement of the fixed shaft 404 will push the mounting plate 403 to push the fixed block 405 to move. The movement of the fixed block 405 will push the locking plate 408 to move and enter the mounting base 7. At this time, the locking plate 408 will no longer block the slider 201 and the guide plate 203, and the second locking will be released.

[0041] Then, the slider 201 and guide plate 203 are again bounced by the third spring 302. When the locking block 206 is blocked by the fixing seat 202, the guide plate 203 cannot move further, and the third locking is entered. Then, the dust cover 11 is removed to expose the handle 209. Then, the handle 209 is turned to make the rotating column 213 rotate. The rotation of the rotating column 213 will drive the first bevel gear 212 to rotate. The rotation of the first bevel gear 212 will drive the second bevel gear 214 to rotate. The rotation of the second bevel gear 214 will drive the first threaded tube 220 to rotate by driving the connecting shaft 215 to rotate. The rotation of the first threaded tube 220 will drive the sleeve 219 to move linearly. The displacement of the sleeve 219 will push the fixing bracket 217. The horizontal plate 221 moves, which in turn pushes the support base 207 to move. The movement of the support base 207 pushes the second rack 218 to move, which in turn pushes the second gear 225 to rotate. The rotation of the second gear 225 will drive the turntable 231 to rotate by driving the support column 228 to rotate. The rotation of the turntable 231 will retract the connecting rope 232. At this time, one end of the connecting rope 232 will pull the locking block 206 to move horizontally. The locking block 206 will then enter the interior of the guide plate 203 and will no longer be parallel to the fixed seat 202. Then the slider 201 and the guide plate 203 can pass through the fixed seat 202. At this time, the slider 201 and the guide plate 203 can be unfolded to facilitate loading and unloading of items in the carriage body 6.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A dual-temperature cold storage refrigerated truck, characterized in that, include The vehicle body (1) has a carriage body (6) on one side. The carriage body (6) has an installation seat (7) and a partition plate (10) inside. Two sets of carriage doors (5) are hinged to one side of the carriage body (6). A locking rod (8) is provided on one side of the carriage door (5). The partition plate (10) divides the space inside the carriage body (6) into two parts. Multiple sets of cold storage plates (9) are provided on one side of the partition plate (10). At least two sets of ramp components (2), each ramp component (2) includes a slider (201), a guide plate (203), a drive component, a retraction component, and two sets of fixed seats (202). The slider (201) is slidably disposed inside the mounting base (7), and the guide plate (203) is slidably disposed inside the slider (201). A movable shaft (205) is rotatably disposed on one side of the guide plate (203). The fixed seats (202) are disposed inside the mounting base (7) and are used to lock the slider (201) and the guide plate (203). The drive component and the retraction component are both disposed inside the guide plate (203). The retraction component is used to release the fixed seat (202) from limiting the slider (201), while the drive component is used to drive the retraction component to run. At least two sets of auxiliary components (3) are provided inside the mounting base (7) for driving the unlocked slider (201) and guide plate (203) to pop outward; The protective component (4) is disposed inside the mounting base (7) and is used to perform secondary locking and limiting of the ramp component (2); The locking rod (8) constitutes the first locking structure. The locking rod (8), the protective component (4), and the fixing seat (202) form a triple locking structure from the outside to the inside, which gradually restricts the unlocking and pop-out stroke of the slider (201) and the guide plate (203).

2. The dual-temperature storage refrigerated truck according to claim 1, characterized in that, The drive assembly includes a rotating column (213) and two sets of mounting discs (208). The rotating column (213) is rotatably disposed inside the guide plate (203), and a first bevel gear (212) is disposed on the outer side of the rotating column (213). The mounting discs (208) are fixedly disposed inside the guide plate (203). A connecting shaft (215) is rotatably disposed inside the two sets of mounting discs (208). A second bevel gear (214) is disposed at one end of the connecting shaft (215), and the second bevel gear (214) meshes with the first bevel gear (212). The other end of the connecting shaft (215) is fixedly provided with a first threaded tube (220). A sleeve (219) is screwed onto the outside of the first threaded tube (220). Two sets of fixing brackets (217) are provided on the outside of the sleeve (219). The side of the two sets of fixing brackets (217) away from the sleeve (219) is fixedly provided with a horizontal plate (221). Two sets of support seats (207) are provided on one side of the horizontal plate (221). A second rack (218) is provided inside the support seat (207), and the second rack (218) meshes with one side of the shrink assembly.

3. The dual-temperature storage refrigerated truck according to claim 2, characterized in that, The retraction assembly includes a support column (228) which is rotatably disposed inside the guide plate (203). Two sets of second gears (225) are provided on the outside of the support column (228), and the second gears (225) mesh with the second rack (218). A turntable (231) is provided on the outside of the support column (228). Two sets of connecting ropes (232) are provided inside the turntable (231). A locking block (206) is provided at the end of the connecting rope (232) away from the turntable (231). The side of the locking block (206) away from the connecting rope (232) passes through the guide plate (203) and the slider (201).

4. The dual-temperature storage refrigerated truck according to claim 3, characterized in that, The guide plate (203) is provided with two sets of fixed plates (222). The fixed plates (222) are provided with balance bars (224) on both sides. The locking block (206) is provided with movable plates (223) on both sides. The movable plates (223) are slidably disposed on the outside of the balance bars (224).

5. The dual-temperature storage refrigerated truck according to claim 4, characterized in that, A placement plate (229) is provided on the outer side of the balance bar (224), and a movable plate (233) is slidably provided on the outer side of the balance bar (224), and a first spring (230) is provided between the movable plate (233) and the placement plate (229).

6. The dual-temperature storage refrigerated truck according to claim 1, characterized in that, The auxiliary component (3) includes a fixed plate (301). Two sets of guide rods (309) are slidably arranged inside the fixed plate (301). One end of each set of guide rods (309) is fixedly arranged with a sliding seat (303). Two sets of placement seats (304) are arranged on one side of the sliding seat (303). A central shaft (305) is arranged between the two sets of placement seats (304). A pulley (306) is rotatably arranged on the outside of the central shaft (305). The outside of the pulley (306) is in contact with the slider (201). A push plate (307) is slidably arranged on the outside of the guide rod (309). A third spring (302) is arranged between the push plate (307) and the fixed plate (301). A support plate (308) is arranged on the outside of the guide rod (309). The support plate (308) is located on the side of the fixed plate (301) away from the third spring (302).

7. The dual-temperature storage refrigerated truck according to claim 1, characterized in that, The protective component (4) includes a connecting rod (411) and two sets of fixing posts (402). The connecting rod (411) is rotatably disposed inside the mounting base (7), and the fixing posts (402) are fixedly disposed inside the mounting base (7). Rollers (416) are rotatably disposed on the outer side of the fixing posts (402). A second threaded tube (413) is disposed at one end of the connecting rod (411), and a movable tube (412) is screwed onto the outer side of the second threaded tube (413). Two sets of movable frames (410) are disposed on the outer side of the movable tube (412). One side of (410) is fixedly set with the movable plate (401). Two sets of positioning shafts (415) are provided on one side of the movable plate (401). A swing plate (414) is rotatably set on the outside of the positioning shaft (415). A fixed shaft (404) is slidably set on the side of the swing plate (414) away from the positioning shaft (415). Mounting plates (403) are provided at both ends of the fixed shaft (404). One side of the two sets of mounting plates (403) is fixedly set with a fixed block (405). A clamping plate (408) is provided on one side of the fixed block (405).

8. The dual-temperature storage refrigerated truck according to claim 7, characterized in that, The mounting base (7) is provided with two sets of mounting brackets (417) inside. The plate (408) is fixedly provided with a balance column (420) inside. A movable disk (418) is slidably provided on the outside of the balance column (420). A fourth spring (419) is provided on one side of the movable disk (418). The end of the fourth spring (419) away from the movable disk (418) is fixedly provided with the plate (408).

9. The dual-temperature storage refrigerated truck according to claim 2, characterized in that, One end of the rotating column (213) is provided with a handle (209), and a first gear (210) is provided on the outside of the handle (209). A first rack (204) is slidably provided inside the guide plate (203), and the first rack (204) and the first gear (210) mesh. Multiple sets of second springs (235) are provided on one side of the first rack (204). The end of the second spring (235) away from the first rack (204) is fixedly provided inside the guide plate (203). Two sets of baffles (234) are provided inside the guide plate (203), and the baffles (234) are in contact with the first rack (204).

10. The dual-temperature cold storage refrigerated truck according to claim 7, characterized in that, One end of the connecting rod (411) is provided with a handle (406), and a third gear (409) is provided on the outside of the handle (406). A support plate (421) is fixedly provided inside the mounting base (7). Two sets of parallel rods (423) are slidably provided inside the support plate (421). One end of each set of parallel rods (423) is fixedly provided with a third rack (407). The third rack (407) and the third gear (409) mesh, and a fifth spring (422) is fixedly provided between the third rack (407) and the support plate (421).

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