Lorry-mounted hoisting transport vehicle with telescopic container

Abstract

The invention relates to the technical field of lorry-mounted hoisting transport vehicles, in particular to a lorry-mounted hoisting transport vehicle with a telescopic container, which comprises a cab, side baffles, a crane main body, an automobile chassis, movable tires, a supporting part, a telescopic container main body, a first electric hydraulic cylinder and a sliding mounting supporting bottom plate, the movable tires are distributed at the bottoms of the two sides of the automobile chassis, the cab is arranged on the upper portion of the front end of the automobile chassis, and the crane body is arranged on the upper portion of the automobile chassis. According to the truck with the loading crane, the first sliding telescopic supporting plate and the second sliding telescopic supporting plate are controlled to synchronously stretch out and draw back on the two sides of the main conveying supporting plate through the telescopic adjusting part driven by the motor, adjustment of the width of the container is achieved, the truck can load large cargoes, use of a trailer or segmented transportation is avoided, the container can be contracted when small cargoes are transported, and the transportation efficiency is improved. The gravity center and wind resistance of the vehicle are reduced, and the transportation efficiency and economy are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of truck-mounted crane transport vehicle technology, specifically a truck-mounted crane transport vehicle with a retractable cargo box. Background Technology

[0002] Truck-mounted cranes, as specialized vehicles integrating lifting and transportation functions, are widely used in engineering construction and logistics transportation. Their core advantage lies in their ability to integrate on-site hoisting and transfer of goods. The core structure of a truck-mounted crane is based on a tractor and chassis, typically including a front cab, a frame and axles as the main load-bearing structure, and wheels for driving. A hydraulic truck-mounted crane is mounted on the upper rear of the frame for on-site hoisting and unloading of goods. A fixed cargo box or truck bed is located behind or to the side of the crane for carrying and transporting goods. However, existing truck-mounted cranes mostly have fixed-volume cargo boxes, which have the following technical defects: (1) Poor adaptability: When faced with oversized and overweight cargo, fixed-volume containers cannot meet the loading requirements, requiring additional trailers or segmented transportation methods, which increases transportation costs and operational complexity. When transporting small cargo, fixed-volume containers have low space utilization, resulting in low transportation efficiency. (2) Poor safety and stability: Existing telescopic cargo box technology is mostly used in ordinary pickup trucks or logistics containers. Its design does not take into account the lifting operation characteristics of truck cranes. The telescopic mechanism is prone to interference with the crane boom and lifting ropes. Moreover, the stability of the telescopic cargo box is insufficient, which can easily cause deformation or tilting and cause danger. Furthermore, the telescopic cargo box is inconvenient to adjust and control, requiring frequent manual adjustment, which is cumbersome, time-consuming and labor-intensive. Therefore, a device is needed to solve the above problems. Summary of the Invention

[0003] To address the problems in the prior art, the present invention provides a truck-mounted crane transport vehicle with a retractable cargo box.

[0004] The technical solution adopted by this invention to solve its technical problem is as follows: a truck-mounted crane transport vehicle with a retractable cargo box, comprising a cab, side panels, a crane body, a truck chassis, mobile tires, support parts, a retractable cargo box body, a first electric hydraulic cylinder, and a sliding mounting support base plate. The mobile tires are distributed on both sides of the bottom of the truck chassis. The cab is located at the upper front end of the truck chassis. The crane body is located on the upper part of the truck chassis and at the middle rear end of the cab. The sliding mounting support base plate is slidably engaged with the truck chassis. The first electric hydraulic cylinder is symmetrically fixedly installed on the truck chassis and is distributed on both sides of the crane body. The front end of the first electric hydraulic cylinder is fixedly connected to the upper inner end of the sliding mounting support base plate. The retractable cargo box body is located on the upper part of the sliding mounting support base plate. The support parts are evenly distributed on both sides of the lower part of the retractable cargo box body. The side panels are distributed on both sides of the crane body, and the bottom end of the side panels is fixedly connected to the truck chassis.

[0005] Specifically, the telescopic cargo box body includes a first sliding telescopic tray, a main conveying support plate, a side protective plate, a locking insert, a second sliding telescopic tray, an auxiliary adjustment plate, a locking threaded post, an end baffle, and a telescopic adjustment part. The telescopic adjustment part is located at the bottom of the main conveying support plate. The first and second sliding telescopic trays are slidably engaged on both sides of the main conveying support plate. The side protective plate is engaged on the outer ends of the second and first sliding telescopic trays via locking inserts. The end baffle is engaged at the upper end of the main conveying support plate via locking inserts, and the locking insert is provided with locking holes. The auxiliary adjustment plate is slidably engaged inside both ends of the end baffle. The locking threaded post is threadedly rotated at both ends of the end baffle, and the front end of the locking threaded post is in contact with the outer wall of the auxiliary adjustment plate.

[0006] Specifically, the telescopic adjustment unit includes a first adjusting toothed plate, an auxiliary support bracket, a motor, a first support frame, a limiting support plate, a second adjusting toothed plate, a second support frame, a drive rod, a support limiting seat, and a drive adjusting gear. The support limiting seat is uniformly and fixedly installed at the upper middle part of the limiting support plate. The motor and the second support frame are distributed at the middle of both ends of the limiting support plate. The drive rod is rotatably engaged with the support limiting seat, and both ends of the drive rod are rotatably engaged with the second support frame and the first support frame. The drive adjusting gear is uniformly and fixedly installed on the drive rod. The motor is fixedly installed on the first support frame, and the drive end of the motor is fixedly connected to the end of the drive rod. The first adjusting toothed plate and the second adjusting toothed plate are uniformly distributed, and the first adjusting toothed plate is located above the second adjusting toothed plate. The drive adjusting gear is located between the first adjusting toothed plate and the second adjusting toothed plate, and the drive adjusting gear is meshed with the first adjusting toothed plate and the second adjusting toothed plate. The auxiliary support bracket is fixedly connected to the bottom end of the first adjusting toothed plate, and the auxiliary support bracket and the second adjusting toothed plate are slidably engaged with the limiting support plate.

[0007] Specifically, the support unit includes a limiting support track plate, a drive frame, a support base, a laser rangefinder, a sliding support plate, a third electric hydraulic cylinder, and a support adjusting wheel. The sliding support plate is slidably engaged inside the limiting support track plate. The support base is fixedly connected to the upper end of the sliding support plate. The support adjusting wheel is uniformly rotated and installed inside the upper end of the support base. The drive frame is fixedly connected to the inner end of the support base and slidably disposed outside the limiting support track plate. The third electric hydraulic cylinder is fixedly installed at the bottom end of the limiting support track plate, and the front end of the third electric hydraulic cylinder is fixedly connected to the bottom end of the drive frame.

[0008] Specifically, a limiting ring is symmetrically fixedly installed at one end of the support base away from the limiting support track plate. A swing support arm is rotatably installed inside the limiting ring. A fixed mounting frame is fixedly installed at the bottom of the one end of the support base away from the limiting support track plate. A fourth electric hydraulic cylinder is fixedly installed inside the fixed mounting frame by bolts. The front end of the fourth electric hydraulic cylinder is rotatably connected to the bottom end of the swing support arm through a rotating shaft. A mounting base is fixedly connected to the upper end of the swing support arm. An auxiliary support wheel is rotatably installed inside the mounting base.

[0009] Specifically, a detection plate is symmetrically fixedly installed on the upper end of the drive frame, and a laser ranging sensor is symmetrically fixedly installed on the upper part of the limit support track plate away from the drive frame, and the detection plate is located directly in front of the laser ranging sensor.

[0010] Specifically, a second electric hydraulic cylinder is evenly fixedly installed on both sides of the bottom of the vehicle chassis, and an auxiliary support plate is slidably engaged inside both sides of the vehicle chassis. The auxiliary support plate is evenly provided with support limiting grooves, and the front end of the second electric hydraulic cylinder is fixedly connected to the bottom end of the auxiliary support plate.

[0011] Specifically, the limiting support plate is fixedly installed on the sliding mounting support base plate by bolts, the bottom ends of the first support frame and the second support frame are fixedly connected to the sliding mounting support base plate, and the bottom end of the main conveying support plate is fixedly connected to the sliding mounting support base plate by a support column.

[0012] Specifically, the outer ends of the first and second adjusting toothed plates are fixedly connected to the bottom ends of the second and first sliding telescopic support plates respectively by bolts. The limiting support track plate is fixedly connected to the side end of the limiting support plate, and the supporting limiting groove is staggered with the supporting part.

[0013] Specifically, the support adjustment wheel of the support part is configured to move synchronously with the telescopic movement of the first sliding telescopic tray and the second sliding telescopic tray.

[0014] The beneficial effects of this invention are: I. This invention uses a motor-driven telescopic adjustment unit to control the synchronous extension and retraction of the first and second sliding telescopic pallets on both sides of the main conveying support plate, thereby achieving adjustment of the cargo box width. This allows it to load large goods, avoiding the use of trailers or segmented transportation, and also to retract the cargo box when transporting small items, lowering the vehicle's center of gravity and wind resistance, significantly improving transportation efficiency and economy. The side guard plates, end baffles, and sliding auxiliary adjustment plates together constitute an adjustable fence. After the cargo box extends or retracts, by adjusting the length of the auxiliary adjustment plate and locking it, a continuous and complete cargo guardrail can be quickly reconstructed, ensuring lateral safety when transporting goods of different sizes and avoiding the compatibility issues of traditional fixed fences.

[0015] Second, the support adjustment wheel in the support section of this invention is not fixed, but driven by a third electric hydraulic cylinder. It can move outward synchronously with the telescopic pallet's telescopic movement, so that the bottom of the extended pallet can always obtain continuous rolling support. This greatly reduces the risk of deformation and deflection caused by suspension or insufficient support, and ensures the overall rigidity of the cargo box structure in the extended state. When the telescopic pallet is extended to its limit position, the control system can trigger the fourth electric hydraulic cylinder to work, push the swing support arm to unfold, and raise the auxiliary support wheel to provide additional key support for the outermost cantilever section of the pallet, forming a double insurance and further enhancing safety under extreme loading conditions. For heavy cargo, the hidden auxiliary support pallet can be pulled out from both sides of the vehicle chassis by the second electric hydraulic cylinder, and the support column can be inserted into its support limit groove to effectively distribute the load, greatly improving the stability and safety of the whole vehicle under heavy load static or uneven road surface conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0017] Figure 2 This is a side view of the three-dimensional structure of the main body in this invention.

[0018] Figure 3 This is a schematic diagram of the upper structure of the automobile chassis in this invention.

[0019] Figure 4 This is a schematic diagram of the side structure of the automobile chassis in this invention.

[0020] Figure 5 This is a schematic diagram of the structure of the telescopic cargo box body in this invention.

[0021] Figure 6 This is a schematic diagram of the auxiliary fixing device in this invention.

[0022] Figure 7 This is a schematic diagram of the telescopic adjustment part in this invention.

[0023] Figure 8 This is a schematic diagram of the internal structure of the telescopic adjustment part in this invention.

[0024] Figure 9 This is a schematic diagram of the support portion in this invention.

[0025] In the diagram: 1-Cockpit, 2-Side panel, 3-Crane body, 4-Car chassis, 5-Mobile tire, 6-Support unit, 7-Telescopic cargo box body, 8-First electric hydraulic cylinder, 9-Sliding mounting support base plate, 10-Support limiting groove, 11-Auxiliary support plate, 12-Second electric hydraulic cylinder, 13-First sliding telescopic support plate, 14-Main conveying support plate, 15-Side protective plate, 16-Securing insert plate, 17-Second sliding telescopic support plate, 18-Auxiliary adjusting plate, 19-Locking threaded column, 20-End partition plate, 21-Telescopic adjusting unit, 22-First adjusting toothed plate, 23- 24-Motor, 25-First support frame, 26-Limit support plate, 27-Second adjusting gear plate, 28-Second support frame, 29-Drive rod, 30-Support limit seat, 31-Drive adjusting gear, 32-Detection plate, 33-Limit support track plate, 34-Drive frame, 35-Support base, 36-Laser rangefinder sensor, 37-Sliding support plate, 38-Third electric hydraulic cylinder, 39-Fixed mounting frame, 40-Fourth electric hydraulic cylinder, 41-Swing support arm, 42-Limit ring, 43-Mounting seat, 44-Auxiliary support wheel, 45-Support adjusting wheel. Detailed Implementation

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

[0027] The invention will be further described below with reference to the accompanying drawings.

[0028] like Figures 1-4As shown, the present invention discloses a truck-mounted crane transport vehicle with a retractable cargo box, comprising a cab 1, side panels 2, a crane body 3, a truck chassis 4, mobile tires 5, a support unit 6, a retractable cargo box body 7, a first electric hydraulic cylinder 8, and a sliding mounting support base plate 9. The mobile tires 5 are distributed on both sides of the bottom of the truck chassis 4. The cab 1 is located at the upper front end of the truck chassis 4. The crane body 3 is located on the upper part of the truck chassis 4, and is located at the middle rear end of the cab 1. The sliding mounting support base plate 9 is slidably engaged with the truck chassis 4. The first electric hydraulic cylinder 8 is symmetrically fixed. The first electric hydraulic cylinder 8 is installed on the truck chassis 4 and distributed on both sides of the crane body 3. The front end of the first electric hydraulic cylinder 8 is fixedly connected to the upper inner end of the sliding support base plate 9. The telescopic cargo box body 7 is set on the upper part of the sliding support base plate 9. The support parts 6 are evenly distributed on both sides of the telescopic cargo box body 7. The side baffles 2 are distributed on both sides of the crane body 3 and the bottom end of the side baffles 2 is fixedly connected to the truck chassis 4. The first electric hydraulic cylinder 8 can control the position of the telescopic cargo box body 7 to move back and forth, which is convenient for the crane body 3 to lift goods.

[0029] like Figures 5-6As shown, the telescopic cargo box body 7 includes a first sliding telescopic tray 13, a main conveying support plate 14, a side protective plate 15, a locking insert 16, a second sliding telescopic tray 17, an auxiliary adjustment plate 18, a locking threaded post 19, an end partition plate 20, and a telescopic adjustment part 21. The telescopic adjustment part 21 is located at the bottom of the main conveying support plate 14. The first sliding telescopic tray 13 and the second sliding telescopic tray 17 are respectively slidably locked onto both sides of the main conveying support plate 14. The side protective plate 15 is locked onto the outer ends of the second sliding telescopic tray 17 and the first sliding telescopic tray 13 by the locking insert 16. The end partition plate 20 is locked onto the upper end of the main conveying support plate 14 by the locking insert 16, and the locking insert 16 is provided with a locking hole. The auxiliary adjustment plate 18 is slidably locked into the inside of both ends of the end partition plate 20. The locking threaded post 19 is threadedly rotated at both ends of the end partition plate 20, and the front end of the locking threaded post 19 is connected to the auxiliary adjustment plate 17. The outer wall of the 8 is in contact with the compression. The first sliding telescopic pallet 13 and the second sliding telescopic pallet 17 can slide and extend on both sides of the main conveying support plate 14, thereby adaptably adjusting the overall cargo transport capacity of the telescopic cargo box body 7. The side guard plate 15 and the end partition plate 20 can be easily removed by removing the locking pins inserted into the locking plate 16, allowing the locking plate 16 at the bottom of the side guard plate 15 and the end partition plate 20 to be smoothly pulled out by the second sliding telescopic pallet 17 and the main conveying support plate 14, making it easy to remove the side guard plate 15 and the end partition plate 20. When the first sliding telescopic pallet 13 and the second sliding telescopic pallet 17 extend and extend, the auxiliary adjustment plate 18 can be adapted to extend and extend along both ends of the end partition plate 20 and locked by screwing the locking threaded post 19, so that the side guard plate 15, the end partition plate 20 and the auxiliary adjustment plate 18 form a continuous fence, which plays a role in sufficient isolation and protection.

[0030] like Figures 7-8As shown, the telescopic adjustment unit 21 includes a first adjustment toothed plate 22, an auxiliary support bracket 23, a motor 24, a first support frame 25, a limiting support plate 26, a second adjustment toothed plate 27, a second support frame 28, a drive rod 29, a support limiting seat 30, and a drive adjustment gear 31. The support limiting seat 30 is uniformly and fixedly installed at the upper middle part of the limiting support plate 26. The motor 24 and the second support frame 28 are distributed at the middle parts of both ends of the limiting support plate 26. The drive rod 29 is rotatably engaged with the support limiting seat 30, and both ends of the drive rod 29 are rotatably engaged with the second support frame 28 and the first support frame 25. The drive adjustment gear 31 is uniformly and fixedly installed on the drive rod 29. The motor 24 is fixedly installed on the first support frame 25. The drive end of the motor 24 is fixedly connected to the end of the drive rod 29. The first adjusting tooth plate 22 and the second adjusting tooth plate 27 are evenly distributed, and the first adjusting tooth plate 22 is located above the second adjusting tooth plate 27. The drive adjusting gear 31 is located between the first adjusting tooth plate 22 and the second adjusting tooth plate 27, and the drive adjusting gear 31 is meshed with the first adjusting tooth plate 22 and the second adjusting tooth plate 27. The auxiliary support bracket 23 is fixedly connected to the bottom end of the first adjusting tooth plate 22. The auxiliary support bracket 23 and the second adjusting tooth plate 27 are slidably engaged on the limiting support plate 26. The telescopic adjustment part 21 can stably control the telescopic movement adjustment of the first sliding telescopic support plate 13 and the second sliding telescopic support plate 17.

[0031] like Figure 9As shown, the support unit 6 includes a limiting support track plate 33, a drive frame 34, a support base 35, a laser rangefinder sensor 36, a sliding support plate 37, a third electric hydraulic cylinder 38, and a support adjusting wheel 45. The sliding support plate 37 is slidably engaged inside the limiting support track plate 33. The support base 35 is fixedly connected to the upper end of the sliding support plate 37. The support adjusting wheel 45 is evenly rotated and installed inside the upper end of the support base 35. The drive frame 34 is fixedly connected to the inner end of the support base 35 and is slidably disposed outside the limiting support track plate 33. The third electric hydraulic cylinder 38 is fixedly installed at the bottom end of the limiting support track plate 33. The front end of the third electric hydraulic cylinder 38 is fixedly connected to the bottom end of the drive frame 34. A limit ring 42 is symmetrically fixedly installed on one end of the support base 35 away from the limit support track plate 33. A swing support arm 41 is rotatably installed inside the limit ring 42. A fixed mounting frame 39 is fixedly installed at the bottom of one end of the support base 35 away from the limit support track plate 33. A fourth electric hydraulic cylinder 40 is fixedly installed inside the fixed mounting frame 39 by bolts. The front end of the fourth electric hydraulic cylinder 40 is rotatably connected to the bottom end of the swing support arm 41 via a rotating shaft. A mounting base 43 is fixedly connected to the upper end of the swing support arm 41. An auxiliary support wheel 44 is rotatably installed inside the mounting base 43. The retractable third electric hydraulic cylinder 38 can... The drive frame 34 slides along the limiting support track plate 33, causing the support base 35 and the sliding support plate 37 to slide outwards along the limiting support track plate 33. This allows the evenly arranged support adjustment wheels 45 to move at the bottom surfaces of the first sliding telescopic support plate 13 and the second sliding telescopic support plate 17. The evenly and symmetrically distributed support adjustment wheels 45 are close to the bottom surfaces of the first sliding telescopic support plate 13 and the second sliding telescopic support plate 17, which not only allows the first sliding telescopic support plate 13 and the second sliding telescopic support plate 17 to be stably and smoothly extended and retracted, but also allows the support adjustment wheels 45 to move outwards synchronously when the first sliding telescopic support plate 13 and the second sliding telescopic support plate 17 extend outwards by a large amount. The lateral sliding movement allows the support adjustment wheel 45 to provide stable support for the bottom ends of the first sliding telescopic pallet 13 and the second sliding telescopic pallet 17, which slide outward from inside the main conveying support plate 14. When the first sliding telescopic pallet 13 and the second sliding telescopic pallet 17 move outward to their limit positions, the fourth electric hydraulic cylinder 40 operates. The operating fourth electric hydraulic cylinder 40 presses the swing support arm 41 outward, causing the swing support arm 41 to rotate inside the limit ring 42. This allows the auxiliary support wheel 44 to rise and autonomously and stably support the areas on the outside of the first sliding telescopic pallet 13 and the second sliding telescopic pallet 17 that cannot be supported by the support adjustment wheel 45.

[0032] A detection plate 32 is symmetrically fixedly installed on the upper end of the drive frame 34. A laser range sensor 36 is symmetrically fixedly installed on the upper part of the limit support track plate 33 away from the drive frame 34. The detection plate 32 is located directly in front of the laser range sensor 36. The distance moved by the detection plate 32 can be detected by the laser range sensor 36, and the distance moved by the support adjustment wheel 45 can be indirectly detected.

[0033] A second electric hydraulic cylinder 12 is evenly fixedly installed on both sides of the bottom of the vehicle chassis 4. An auxiliary support plate 11 is slidably engaged inside both sides of the vehicle chassis 4. A support limiting groove 10 is evenly provided on the auxiliary support plate 11. The front end of the second electric hydraulic cylinder 12 is fixedly connected to the bottom end of the auxiliary support plate 11. When the second electric hydraulic cylinder 12 is activated, the auxiliary support plate 11 inside both sides of the vehicle chassis 4 slides outward and is exposed. This causes the auxiliary support plate 11 and the support limiting groove 10 to move to the outside of the first sliding telescopic plate 13 and the second sliding telescopic plate 17 directly below. By placing a support column inside the support limiting groove 10, the edges and bottom of the first sliding telescopic plate 13 and the second sliding telescopic plate 17 can be stably supported, achieving a sufficient auxiliary support and reinforcement effect.

[0034] The limiting support plate 26 is fixedly installed on the sliding installation support base plate 9 by bolts. The bottom ends of the first support frame 25 and the second support frame 28 are fixedly connected to the sliding installation support base plate 9. The bottom end of the main conveying support plate 14 is fixedly connected to the sliding installation support base plate 9 by the support column, which plays the role of fixed support. The support adjustment wheel 45 of the support part 6 is set to move synchronously with the telescopic movement of the first sliding telescopic tray 13 and the second sliding telescopic tray 17.

[0035] The outer ends of the first adjusting tooth plate 22 and the second adjusting tooth plate 27 are fixedly connected to the bottom ends of the second sliding telescopic support plate 17 and the first sliding telescopic support plate 13 respectively by bolts. The limiting support track plate 33 is fixedly connected to the side end of the limiting support plate 26, and the supporting limiting groove 10 and the supporting part 6 are staggered, so that the supporting part 6 will not affect the use position of the supporting limiting groove 10.

[0036] Working principle: During use, the crane body 3 can lift the goods placed inside the telescopic cargo box body 7. The first sliding telescopic pallet 13 and the second sliding telescopic pallet 17 in the telescopic cargo box body 7 can slide and extend on both sides of the main conveying support plate 14, thereby adapting and adjusting the overall cargo transport capacity of the telescopic cargo box body 7. After the locking pins inserted into the locking plates 16 are removed, the locking plates 16 at the bottom of the side guard plate 15 and the end partition plate 20 can be smoothly pulled out by the second sliding telescopic pallet 17 and the main conveying support plate 14. This allows the side guard plate 15 and end baffle 20 to be easily removed. When the first sliding telescopic support plate 13 and the second sliding telescopic support plate 17 extend or retract, they can be adjusted to allow the auxiliary adjustment plate 18 to extend or retract along both ends of the end baffle 20 and be locked by screwing the locking threaded post 19. This creates a continuous enclosure between the side guard plate 15, the end baffle 20, and the auxiliary adjustment plate 18, providing sufficient protection. The first sliding telescopic support plate 13 and the second sliding telescopic support plate 17 can be automatically adjusted inside both sides of the main conveyor support plate 14. This adjustment is achieved through the installation in the cab 1. The control button activates the motor 24, which in turn drives the drive rod 29 to rotate. This, in turn, causes the drive adjusting gears 31, which are fixed to the drive rod 29, to rotate. The drive adjusting gears 31 are located between the first adjusting gear plate 22 and the second adjusting gear plate 27, and are meshed with the first adjusting gear plate 22 and the second adjusting gear plate 27. The rotation of the drive adjusting gears 31 allows the first adjusting gear plate 22 and the second adjusting gear plate 27 to move telescopically simultaneously. Since the outer ends of the second adjusting gear plate 27 and the first adjusting gear plate 22 are bolted to the first sliding telescopic support plate... The bottom ends of the first sliding telescopic pallet 13 and the second sliding telescopic pallet 17 are fixedly connected, so the first sliding telescopic pallet 13 and the second sliding telescopic pallet 17 can be controlled to automatically and conveniently slide and adjust inside both sides of the main conveying support plate 14. The bottom end of the first adjusting toothed plate 22 is slidably set on the limiting support plate 26 through the auxiliary support bracket 23, and the bottom end of the second adjusting toothed plate 27 is directly slidably locked on the limiting support plate 26, so that the sliding movement adjustment of the first adjusting toothed plate 22 and the second adjusting toothed plate 27 is stable, and the first sliding telescopic pallet 13 and the second sliding telescopic pallet 17 can achieve telescopic adjustment stably and smoothly. When the first sliding telescopic pallet 13 and the second sliding telescopic pallet 17 extend outward along the main conveying support plate 14, the controller in the cab 1 automatically or via control buttons inside the cab 1 controls the operation of the third electric hydraulic cylinders 38 in each evenly distributed support section 6. The retracting third electric hydraulic cylinders 38 can slide along the limit support track plate 33 via the drive frame 34, driving the support base 35 and the sliding support plate 37 to slide outward along the limit support track plate 33, so that the evenly arranged support adjusting wheels 45 on the first sliding telescopic pallet 13 and the second sliding telescopic pallet 17 extend outward. The bottom surface of 17 moves, and the evenly and symmetrically distributed support adjustment wheels 45 are close to the bottom ends of the first sliding telescopic tray 13 and the second sliding telescopic tray 17. This not only allows the first sliding telescopic tray 13 and the second sliding telescopic tray 17 to be stably and smoothly extended and retracted, but also, when the first sliding telescopic tray 13 and the second sliding telescopic tray 17 extend outward by a large amount, the support adjustment wheels 45 slide outward synchronously. This allows the support adjustment wheels 45 to fully stabilize the bottom ends of the first sliding telescopic tray 13 and the second sliding telescopic tray 17 that slide outward from inside the main conveying support plate 14. The system provides support, and when the first sliding telescopic support plate 13 and the second sliding telescopic support plate 17 move outward to their extreme positions, the fourth electro-hydraulic cylinder 40 operates. The operating fourth electro-hydraulic cylinder 40 presses the swing support arm 41 outward, causing the swing support arm 41 to rotate inside the limit ring 42. This allows the auxiliary support wheel 44 to rise and autonomously and stably support the areas on the outer sides of the first sliding telescopic support plate 13 and the second sliding telescopic support plate 17 that cannot be supported by the support adjustment wheel 45, ensuring that the bottom ends of the outwardly extending first sliding telescopic support plate 13 and the second sliding telescopic support plate 17 are sufficiently and firmly supported. Furthermore, when the weight of the goods placed on the main conveying support plate 14, the first sliding telescopic pallet 13, and the second sliding telescopic pallet 17 is large, the second electric hydraulic cylinder 12 is activated to cause the auxiliary support pallets 11 set inside both sides of the vehicle chassis 4 to slide outward and be exposed. This allows the auxiliary support pallets 11 and the support limiting groove 10 to move to the outside and directly below the first sliding telescopic pallet 13 and the second sliding telescopic pallet 17. The support columns placed inside the support limiting groove 10 can stably support the bottom edges of the first sliding telescopic pallet 13 and the second sliding telescopic pallet 17, thus achieving a sufficient auxiliary support and reinforcement effect.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A truck-mounted crane transport vehicle with a retractable cargo box, comprising a cab (1), side panels (2), a crane body (3), a truck chassis (4), mobile tires (5), a support unit (6), a retractable cargo box body (7), a first electric hydraulic cylinder (8), and a sliding support base plate (9), characterized in that: The mobile tires (5) are distributed on both sides of the bottom of the vehicle chassis (4). The cab (1) is located at the upper front end of the vehicle chassis (4). The crane body (3) is located on the upper part of the vehicle chassis (4) and at the middle rear end of the cab (1). The sliding mounting support plate (9) is slidably engaged with the vehicle chassis (4). The first electric hydraulic cylinder (8) is symmetrically fixedly installed on the vehicle chassis (4) and distributed on both sides of the crane body (3). The front end of the first electric hydraulic cylinder (8) is fixedly connected to the upper inner end of the sliding mounting support plate (9). The telescopic cargo box body (7) is located on the upper part of the sliding mounting support plate (9). The support parts (6) are evenly distributed on both sides of the telescopic cargo box body (7). The side baffles (2) are distributed on both sides of the crane body (3) and the bottom end of the side baffles (2) is fixedly connected to the vehicle chassis (4).

2. The truck-mounted crane transport vehicle with a retractable cargo box according to claim 1, characterized in that: The telescopic cargo box body (7) includes a first sliding telescopic tray (13), a main conveying support plate (14), a side protective plate (15), a locking insert plate (16), a second sliding telescopic tray (17), an auxiliary adjustment plate (18), a locking threaded post (19), an end baffle plate (20), and a telescopic adjustment part (21). The telescopic adjustment part (21) is located at the bottom of the main conveying support plate (14). The first sliding telescopic tray (13) and the second sliding telescopic tray (17) are respectively slidably locked onto both sides of the main conveying support plate (14). The side protective plate (15) The end baffle (20) is secured to the outer ends of the second sliding telescopic support plate (17) and the first sliding telescopic support plate (13) by means of a locking insert plate (16). The end baffle (20) is secured to the upper end of the main conveying support plate (14) by means of a locking insert plate (16). The locking insert plate (16) is provided with a locking hole. The auxiliary adjustment plate (18) is slidably secured to the inside of both ends of the end baffle (20). The locking threaded column (19) is threadedly rotated at both ends of the end baffle (20). The front end of the locking threaded column (19) is pressed against the outer wall of the auxiliary adjustment plate (18).

3. A truck-mounted crane transport vehicle with a retractable cargo box according to claim 2, characterized in that: The telescopic adjustment part (21) includes a first adjustment toothed plate (22), an auxiliary support bracket (23), a motor (24), a first support frame (25), a limiting support plate (26), a second adjustment toothed plate (27), a second support frame (28), a drive rod (29), a support limiting seat (30), and a drive adjustment gear (31). The support limiting seat (30) is uniformly and fixedly installed at the upper middle part of the limiting support plate (26). The motor (24) and the second support frame (28) are distributed at the middle parts of both ends of the limiting support plate (26). The drive rod (29) is rotatably engaged with the support limiting seat (30), and both ends of the drive rod (29) are rotatably engaged with the second support frame (28) and the first support frame (25). The drive adjustment gear (31) is uniformly and fixedly installed on the drive rod. On (29), the motor (24) is fixedly installed on the first support frame (25), and the driving end of the motor (24) is fixedly connected to the end of the driving rod (29). The first adjusting tooth plate (22) and the second adjusting tooth plate (27) are evenly distributed, and the first adjusting tooth plate (22) is located above the second adjusting tooth plate (27). The driving adjusting gear (31) is located between the first adjusting tooth plate (22) and the second adjusting tooth plate (27), and the driving adjusting gear (31) is meshed with the first adjusting tooth plate (22) and the second adjusting tooth plate (27). The auxiliary support bracket (23) is fixedly connected to the bottom end of the first adjusting tooth plate (22), and the auxiliary support bracket (23) and the second adjusting tooth plate (27) are slidably engaged on the limiting support plate (26).

4. A truck-mounted crane transport vehicle with a retractable cargo box according to claim 3, characterized in that: The support part (6) includes a limiting support track plate (33), a drive frame (34), a support base (35), a laser rangefinder (36), a sliding support plate (37), a third electric hydraulic cylinder (38), and a support adjustment wheel (45). The sliding support plate (37) is slidably engaged inside the limiting support track plate (33). The support base (35) is fixedly connected to the upper end of the sliding support plate (37). The support adjustment wheel (45) is evenly rotated and installed inside the upper end of the support base (35). The drive frame (34) is fixedly connected to the inner end of the support base (35) and is slidably disposed outside the limiting support track plate (33). The third electric hydraulic cylinder (38) is fixedly installed at the bottom end of the limiting support track plate (33), and the front end of the third electric hydraulic cylinder (38) is fixedly connected to the bottom end of the drive frame (34).

5. A truck-mounted crane transport vehicle with a retractable cargo box according to claim 4, characterized in that: A limiting ring (42) is symmetrically fixedly installed at one end of the support base (35) away from the limiting support track plate (33). A swing support arm (41) is rotatably installed inside the limiting ring (42). A fixed mounting frame (39) is fixedly installed at the bottom of one end of the support base (35) away from the limiting support track plate (33). A fourth electric hydraulic cylinder (40) is fixedly installed inside the fixed mounting frame (39) by bolts. The front end of the fourth electric hydraulic cylinder (40) is rotatably connected to the bottom end of the swing support arm (41) through a rotating shaft. A mounting seat (43) is fixedly connected to the upper end of the swing support arm (41). An auxiliary support wheel (44) is rotatably installed inside the mounting seat (43).

6. A truck-mounted crane transport vehicle with a retractable cargo box according to claim 5, characterized in that: A detection plate (32) is symmetrically fixedly installed on the upper end of the drive frame (34), and a laser rangefinder (36) is symmetrically fixedly installed on the upper part of the limit support track plate (33) away from the drive frame (34), and the detection plate (32) is located directly in front of the laser rangefinder (36).

7. A truck-mounted crane transport vehicle with a retractable cargo box according to claim 6, characterized in that: The bottom ends of both sides of the vehicle chassis (4) are uniformly fixed with second electric hydraulic cylinders (12), and auxiliary support plates (11) are slidably connected inside both sides of the vehicle chassis (4). Support limiting grooves (10) are uniformly provided on the auxiliary support plates (11). The front end of the second electric hydraulic cylinder (12) is fixedly connected to the bottom end of the auxiliary support plate (11).

8. A truck-mounted crane transport vehicle with a retractable cargo box according to claim 7, characterized in that: The limiting support plate (26) is fixedly installed on the sliding installation support base plate (9) by bolts. The bottom ends of the first support frame (25) and the second support frame (28) are fixedly connected to the sliding installation support base plate (9). The bottom end of the main conveying support plate (14) is fixedly connected to the sliding installation support base plate (9) by a support column.

9. A truck-mounted crane transport vehicle with a retractable cargo box according to claim 8, characterized in that: The outer ends of the first adjusting tooth plate (22) and the second adjusting tooth plate (27) are fixedly connected to the bottom ends of the second sliding telescopic support plate (17) and the first sliding telescopic support plate (13) respectively by bolts. The limiting support track plate (33) is fixedly connected to the side end of the limiting support plate (26), and the supporting limiting groove (10) and the supporting part (6) are staggered.

10. A truck-mounted crane transport vehicle with a retractable cargo box according to claim 9, characterized in that: The support adjustment wheel (45) of the support part (6) is configured to move synchronously with the telescopic movement of the first sliding telescopic tray (13) and the second sliding telescopic tray (17).

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