Truck-mounted crane capable of automatically expanding supporting legs

Abstract

The invention relates to the technical field of truck-mounted cranes, in particular to a truck-mounted crane capable of automatically expanding supporting legs, which comprises a cab, a first supporting stabilizing part, a second supporting stabilizing part, an auxiliary supporting part, wheels, a limiting adjusting groove, a first stress supporting plate, a mounting table, a first mounting groove, a chassis, a second stress supporting plate, a carriage and a crane main body, the carriage is arranged on the upper portion of the chassis, the cab is arranged on the upper portion of the front end of the chassis, the first stress supporting plates are symmetrically distributed between the cab and the two sides of the carriage, and the bottom ends of the first stress supporting plates are fixedly connected to the chassis. According to the truck-mounted crane, multi-point and large-area self-adaptive stable supporting is provided, the operation stability and safety of the whole truck are remarkably improved, and an expanded supporting face composed of a plurality of independent supporting points can be formed after automatic adjustment through the arranged first supporting and stabilizing part, the arranged second supporting and stabilizing part and the auxiliary supporting parts arranged on the two sides of the carriage.

Description

Technical Field

[0001] This invention relates to the field of truck-mounted crane technology, specifically a truck-mounted crane capable of automatically extending its outriggers. Background Technology

[0002] Truck-mounted cranes, as a type of engineering machinery that integrates lifting and transportation functions, are widely used in engineering construction, logistics and transportation and other fields. Outriggers are key support components of truck-mounted cranes. Their function is to expand the support span during lifting operations, improve the stability of the vehicle body, prevent the vehicle body from tilting or overturning, and ensure operational safety.

[0003] The existing outrigger structure of truck-mounted cranes has many defects: First, most outriggers use manual or semi-manual extension methods, requiring operators to manually adjust the extension direction and extension length on-site. This operation is cumbersome, time-consuming, and labor-intensive, resulting in low work efficiency and an inability to meet the demands of rapid operations. Second, the outriggers used on existing truck-mounted cranes have limited support angles and positions, and the support force points are singular, limiting the support area and thus resulting in insufficient support stability. Third, as the main support and protection element, the outriggers are singular, and when lifting heavy loads, they cannot adapt to adjust the overall support stability of the truck-mounted crane. Therefore, a device is needed to solve the above problems. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a truck-mounted crane capable of automatically extending its outriggers.

[0005] The technical solution adopted by this invention to solve its technical problem is: a truck-mounted crane capable of automatically extending outriggers, comprising a cab, a first support and stabilizing part, a second support and stabilizing part, an auxiliary support part, wheels, a limit adjustment groove, a first force-bearing support plate, a mounting platform, a first mounting groove, a chassis, a second force-bearing support plate, a cargo box, and a crane body. The cargo box is located on the upper part of the chassis, and the cab is located on the upper front end of the chassis. The first force-bearing support plates are symmetrically distributed between the cab and the two sides of the cargo box. The bottom end of the first force-bearing support plate is fixedly connected to the chassis. The mounting platform is fixedly installed between the upper ends of the first force-bearing support plates. The bottom of the crane body... The crane is fixedly connected to the mounting platform. The limiting adjustment groove is symmetrically opened through the first force-bearing support plate. The first mounting groove is opened between the bottom sides of the chassis and the carriage. The second force-bearing support plate is symmetrically fixedly installed inside the first mounting groove. The first support stabilizing part and the second support stabilizing part are mirror-symmetrically arranged between the cab and the carriage, and the first support stabilizing part and the second support stabilizing part are located below the main body of the crane. The auxiliary support part is distributed between the sides of the carriage and the chassis. The auxiliary support part is located inside the first mounting groove. The wheels are located below the carriage and the cab, and the wheels are rotatably installed on the bottom sides of the chassis.

[0006] Specifically, the first support and stabilizing part includes a first electric hydraulic cylinder, a fixed mounting base, a limiting support base, a first support part, a U-shaped adjusting toothed plate, and a second support part. The second support part and the first support part are arranged in a mirror-symmetrical manner. The U-shaped adjusting toothed plate is disposed between the second support part and the first support part. The first electric hydraulic cylinder is fixedly mounted on the fixed mounting base, and the front end of the first electric hydraulic cylinder is fixedly connected to the middle part of the U-shaped adjusting toothed plate. The front end of the first electric hydraulic cylinder is slidably inserted into the limiting support base.

[0007] Specifically, the first support part includes a main support device, a first auxiliary support device, and a second auxiliary support device. The first auxiliary support device and the second auxiliary support device are disposed on the outer end of the main support device, and the first auxiliary support device and the second auxiliary support device have the same structure.

[0008] Specifically, the main support device includes a first rotating adjusting gear, a first limiting support arm, a first telescopic adjusting arm, a mounting frame, a first support leg, a second electric cylinder, a first telescopic support leg, a first pressure sensor, a first support base, a second mounting groove, a first motor, and a third electric cylinder. The first limiting support arm is fixedly connected to the outer end of the first rotating adjusting gear, and the first telescopic adjusting arm is slidably engaged inside the end of the first limiting support arm opposite to the first rotating adjusting gear. The third electric cylinder is fixedly installed on both sides of the first limiting support arm, and the front end of the third electric cylinder is fixedly connected to the first telescopic adjusting arm. The mounting frame is symmetrically fixedly connected to... The first telescopic adjusting arm is connected to the end opposite to the first limiting support arm. The second mounting groove is opened inside the mounting frame. The first motor is fixedly mounted on the upper end of the mounting frame. The upper end of the first support leg is fixedly connected to the bottom end of the mounting frame by bolts. The first telescopic support leg is slidably engaged inside the bottom end of the first support leg. The second electric cylinder is evenly fixedly mounted on the side end of the first support leg, and the bottom end of the second electric cylinder is fixedly connected to the side end of the first telescopic support leg. The first pressure sensor is fixedly connected to the bottom end of the first telescopic support leg, and the first support base is fixedly connected to the bottom end of the first pressure sensor.

[0009] Specifically, the first auxiliary support device includes a second rotating adjusting gear, a second limiting support arm, a fourth electric cylinder, a second support base, a second pressure sensor, a second telescopic support leg, a fifth electric cylinder, a second support leg, and a second telescopic adjusting arm. The second limiting support arm is fixedly connected to the second telescopic adjusting arm and slidably engaged inside the end of the second limiting support arm opposite to the second rotating adjusting gear. The fourth electric cylinder is fixedly installed on both sides of the second limiting support arm. The second support leg is fixedly installed at the bottom end of the second telescopic adjusting arm by bolts and slidably engaged inside the bottom end of the second support leg. The fifth electric cylinder is evenly fixedly installed on the outer side of the second support leg, and the bottom end of the fifth electric cylinder is fixedly connected to the side end of the second telescopic support leg. The second pressure sensor is fixedly connected to the bottom end of the second telescopic support leg, and the second support base is fixedly connected to the bottom end of the second pressure sensor.

[0010] Specifically, the auxiliary support unit includes a second motor, a synchronous rotating belt, a synchronous drive wheel, a rotating adjusting disc, a third limiting support arm, a first locking threaded post, a third telescopic adjusting arm, a second locking threaded post, and a limiting support sleeve. The rotating adjusting disc is evenly distributed, the third limiting support arm is fixedly connected to the rotating adjusting disc, the synchronous drive wheel is fixedly connected to both sides of the rotating adjusting disc, the third telescopic adjusting arm is slidably engaged inside the third limiting support arm, and the first locking threaded post is threadedly rotatably inserted into the third limiting support arm. The front end of the first locking threaded post is connected to the limiting support sleeve. The outer wall of the third telescopic adjusting arm is pressed into contact with the limiting support sleeve, which is fixedly connected to one end of the third telescopic adjusting arm away from the third limiting support arm. An auxiliary support prism is fixedly provided inside the limiting support sleeve. The second locking threaded column is evenly threaded and rotated into the limiting support sleeve, and the front end of the second locking threaded column is pressed into contact with the upper end of the auxiliary support prism. The synchronous rotating belt is rotatably arranged between adjacent synchronous driving wheels. The second motor is arranged below the rotating adjusting disc at the middle position, and the driving end of the second motor is fixedly connected to the bottom end of the synchronous driving wheel.

[0011] Specifically, the two sides of the synchronous drive wheel are rotatably mounted inside the first mounting slot, the second motor is fixedly mounted on the chassis, and the auxiliary support is folded inside the first mounting slot.

[0012] Specifically, the second rotating adjustment gear is rotatably engaged inside the second mounting groove, the first auxiliary support device and the second auxiliary support device are meshed together, and the drive end of the first motor is fixedly connected to the upper middle part of the second rotating adjustment gear in the second auxiliary support device.

[0013] Specifically, the first limiting support arm is rotatably engaged inside the limiting adjustment groove, and the third limiting support arm is rotatably engaged between the second force-bearing support plates.

[0014] Specifically, the first rotating adjusting gear is rotatably mounted on the bottom of the mounting platform, and the first rotating adjusting gear in the first support part and the second support part are respectively meshed with the two sides of the U-shaped adjusting gear plate. The fixed mounting base and the limiting support base are fixedly mounted on the bottom of the mounting platform by bolts.

[0015] The beneficial effects of this invention are: I. This invention achieves fully automated deployment and adjustment of the outriggers of the truck-mounted crane, and the first and second support parts can operate synchronously and collaboratively. Through an electronically controlled drive system consisting of a first electric hydraulic cylinder, a U-shaped adjusting toothed plate, a first rotating adjusting toothed disc, a third electric hydraulic cylinder, a second electric hydraulic cylinder, and a first electric motor, the operator can control the system with one button in the cab to automatically complete the coordinated adjustment of the deployment length of the main outriggers, the support angle, and the deployment position of the auxiliary outriggers. The entire process requires no manual intervention, greatly simplifying the operation process, significantly improving the efficiency of work preparation, and reducing the labor intensity and safety risks for operators.

[0016] Second, this invention provides multi-point, large-area adaptive and stable support, significantly improving the overall operational stability and safety of the machine. The first and second support stabilizing parts, as well as the auxiliary support parts on both sides of the carriage, can automatically adjust to form an expanded support surface composed of multiple independent support points. The support angle can be automatically and conveniently adjusted, providing a large support range. The pressure sensors at the bottom of each support leg can provide real-time feedback on the force. The control system intelligently adjusts the extension of each electric cylinder to ensure that each outrigger is evenly and stably grounded and bears the load. When lifting heavy objects, the auxiliary support parts distributed on both sides of the carriage can be deployed to further increase the support points and support area. This overcomes the shortcomings of existing outriggers, such as single support angle, concentrated force points, and insufficient stability, enabling the equipment to safely adapt to the lifting operation requirements of goods of different weights. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the main body in a fully supported state structure in this invention.

[0019] Figure 3 This is a schematic diagram of the two sides of the chassis in this invention.

[0020] Figure 4 This is a schematic diagram of the structure of the first support and stabilizing part in this invention.

[0021] Figure 5 This is a schematic diagram of the structure of the first support part in this invention.

[0022] Figure 6 This is a schematic diagram of the main support device in this invention.

[0023] Figure 7 This is a schematic diagram of the structure of the first auxiliary support device in this invention.

[0024] Figure 8 This is a schematic diagram of the auxiliary support part in this invention.

[0025] In the diagram: 1-Cockpit, 2-First Support and Stabilizer, 3-Second Support and Stabilizer, 4-Auxiliary Support, 5-Wheel, 6-Limit Adjustment Slot, 7-First Load-Bearing Support Plate, 8-Mounting Platform, 9-First Mounting Slot, 10-Chassis, 11-Second Load-Bearing Support Plate, 12-Cargo Box, 13-Crane Body, 14-First Electric Hydraulic Cylinder, 15-Fixed Mounting Seat, 16-Limit Support Seat, 17-First Support, 18-U-Shaped Adjusting Tooth Plate, 19-Second Support, 20-Main Support Device, 21-First Auxiliary Support Device, 22-Second Auxiliary Support Device, 23-First Rotating Adjustment Gear, 24-First Limit Support Arm, 25-First Telescopic Adjusting Arm, 26-Mounting Frame, 27-First Support Leg, 28-Second Electric Hydraulic Cylinder 29-First telescopic support leg, 30-First pressure sensor, 31-First support base, 32-Second mounting slot, 33-First electric motor, 34-Third electric cylinder, 35-Second rotating adjusting gear plate, 36-Second limit support arm, 37-Fourth electric cylinder, 38-Second support base, 39-Second pressure sensor, 40-Second telescopic support leg, 41-Fifth electric cylinder, 42-Second support leg, 43-Second telescopic adjusting arm, 44-Second electric motor, 45-Synchronous rotating belt, 46-Synchronous drive wheel, 47-Rotating adjusting disc, 48-Third limit support arm, 49-First locking threaded column, 50-Third telescopic adjusting arm, 51-Second locking threaded column, 52-Auxiliary support prism, 53-Limit support sleeve. 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 1-5 As shown, this invention discloses a truck-mounted crane capable of automatically extending outriggers, including a cab 1, a first support and stabilizing part 2, a second support and stabilizing part 3, an auxiliary support part 4, wheels 5, a limit adjustment groove 6, a first load-bearing support plate 7, a mounting platform 8, a first mounting groove 9, a chassis 10, a second load-bearing support plate 11, a cargo box 12, and a crane body 13. The cargo box 12 is located on the upper part of the chassis 10, and the cab 1 is located on the upper front end of the chassis 10. The first load-bearing support plates 7 are symmetrically distributed between the cab 1 and the two sides of the cargo box 12, and the bottom end of the first load-bearing support plate 7 is fixedly connected to the chassis 10. The mounting platform 8 is fixedly installed between the upper ends of the first load-bearing support plate 7. The bottom of the crane body 13 is fixedly connected to the mounting platform 8. The limit adjustment groove 6 is symmetrically opened through the first load-bearing support plate 7. The first mounting groove 9 is opened between the bottom sides of the chassis 10 and the carriage 12. The second load-bearing support plate 11 is symmetrically fixedly installed inside the first mounting groove 9. The first support stabilizing part 2 and the second support stabilizing part 3 are mirror-symmetrically arranged between the cab 1 and the carriage 12, and the first support stabilizing part 2 and the second support stabilizing part 3 are located below the crane body 13. The auxiliary support parts 4 are distributed between the carriage 12 and the chassis. Between the two sides of chassis 10, auxiliary support 4 is disposed inside the first mounting groove 9. Wheels 5 are located below the carriage 12 and the cab 1, and are rotatably mounted on the bottom sides of chassis 10. The first support stabilizing part 2 includes a first electric cylinder 14, a fixed mounting base 15, a limiting support base 16, a first support part 17, a U-shaped adjusting toothed plate 18, and a second support part 19. The second support part 19 and the first support part 17 are arranged in a mirror-symmetrical manner. The U-shaped adjusting toothed plate 18 is disposed between the second support part 19 and the first support part 17. The first electric cylinder 14 is fixedly mounted on the fixed mounting base 15. The front end of the first electric cylinder 14 is fixedly connected to the middle of the U-shaped adjusting tooth plate 18, and the front end of the first electric cylinder 14 is slidably inserted into the limiting support seat 16. The first support part 17 includes a main support device 20, a first auxiliary support device 21 and a second auxiliary support device 22. The first auxiliary support device 21 and the second auxiliary support device 22 are arranged at the outer end of the main support device 20, and the first auxiliary support device 21 and the second auxiliary support device 22 have the same structure. The first electric cylinder 14 realizes the function of adjusting the angle and position of the first support part 17 and the second support part 19.

[0029] like Figure 6As shown, the main support device 20 includes a first rotating adjusting gear 23, a first limiting support arm 24, a first telescopic adjusting arm 25, a mounting frame 26, a first support leg 27, a second electric cylinder 28, a first telescopic support leg 29, a first pressure sensor 30, a first support base 31, a second mounting groove 32, a first motor 33, and a third electric cylinder 34. The first limiting support arm 24 is fixedly connected to the outer end of the first rotating adjusting gear 23. The first telescopic adjusting arm 25 is slidably engaged inside the end of the first limiting support arm 24 away from the first rotating adjusting gear 23. The third electric cylinder 34 is fixedly installed on both sides of the first limiting support arm 24, and the front end of the third electric cylinder 34 is fixedly connected to the first telescopic adjusting arm 25. The mounting frame 26 is symmetrically fixedly connected to the first telescopic adjusting arm 25. One end of the articulated arm 25 is away from the first limiting support arm 24. The second mounting groove 32 is opened inside the mounting frame 26. The first motor 33 is fixedly installed on the upper end of the mounting frame 26. The upper end of the first support leg 27 is fixedly connected to the bottom end of the mounting frame 26 by bolts. The first telescopic support leg 29 is slidably engaged inside the bottom end of the first support leg 27. The second electric cylinder 28 is evenly fixedly installed on the side end of the first support leg 27, and the bottom end of the second electric cylinder 28 is fixedly connected to the side end of the first telescopic support leg 29. The first pressure sensor 30 is fixedly connected to the bottom end of the first telescopic support leg 29. The first support base 31 is fixedly connected to the bottom end of the first pressure sensor 30. This allows for automatic adjustment of the main support, enabling the angle and position of the support to be adjusted and controlled accordingly.

[0030] like Figure 7 As shown, the first auxiliary support device 21 includes a second rotating adjusting gear 35, a second limiting support arm 36, a fourth electric cylinder 37, a second support base 38, a second pressure sensor 39, a second telescopic support leg 40, a fifth electric cylinder 41, a second support leg 42, and a second telescopic adjusting arm 43. The second limiting support arm 36 is fixedly connected to the second telescopic adjusting arm 43, which is slidably engaged with the end of the second limiting support arm 36 facing away from the second rotating adjusting gear 35. The fourth electric cylinder 37 is fixedly installed on both sides of the second limiting support arm 36. The second support leg 42 is secured by bolts. The second telescopic support leg 40 is fixedly installed at the bottom end of the second telescopic adjustment arm 43. The second telescopic support leg 40 is slidably engaged inside the bottom end of the second support leg 42. The fifth electric cylinder 41 is evenly fixedly installed on the outer side end of the second support leg 42. The bottom end of the fifth electric cylinder 41 is fixedly connected to the side end of the second telescopic support leg 40. The second pressure sensor 39 is fixedly connected to the bottom end of the second telescopic support leg 40. The second support base 38 is fixedly connected to the bottom end of the second pressure sensor 39. The first auxiliary support device 21 provides auxiliary support, realizes multi-point support, and increases the support area for greater stability.

[0031] like Figure 8As shown, the auxiliary support part 4 includes a second motor 44, a synchronous rotating belt 45, a synchronous drive wheel 46, a rotating adjusting disc 47, a third limiting support arm 48, a first locking threaded post 49, a third telescopic adjusting arm 50, a second locking threaded post 51, and a limiting support sleeve 53. The rotating adjusting disc 47 is evenly distributed, the third limiting support arm 48 is fixedly connected to the rotating adjusting disc 47, the synchronous drive wheel 46 is fixedly connected to both sides of the rotating adjusting disc 47, the third telescopic adjusting arm 50 is slidably engaged inside the third limiting support arm 48, and the first locking threaded post 49 is threadedly rotatably inserted into the third limiting support arm 48. On the limiting support arm 48, the front end of the first locking threaded post 49 presses against the outer wall of the third telescopic adjusting arm 50. The limiting support sleeve 53 is fixedly connected to the end of the third telescopic adjusting arm 50 away from the third limiting support arm 48. An auxiliary support prism 52 is fixedly installed inside the limiting support sleeve 53. The second locking threaded post 51 is evenly threaded and rotated into the limiting support sleeve 53, and the front end of the second locking threaded post 51 presses against the upper end of the auxiliary support prism 52. The synchronous rotating belt 45 is rotatably arranged between adjacent synchronous drive wheels 46. The second motor 44 is located in the middle part. Below the rotating adjustment disc 47, and with the drive end of the second motor 44 fixedly connected to the bottom end of the synchronous drive wheel 46, the second motor 44 can drive the synchronous drive wheel 46 and the rotating adjustment disc 47 in the middle to rotate inside the first mounting groove 9. Since the synchronous drive wheels 46 are driven by a synchronous rotating belt 45, when one synchronous drive wheel 46 and the rotating adjustment disc 47 rotate, the other synchronous drive wheels 46 and the rotating adjustment disc 47 rotate simultaneously, causing each of the third limiting support arms 48 folded and placed in the first mounting groove 9 to rotate outward and extend. Then, by screwing the first... A locking threaded post 49 causes the third telescopic adjusting arm 50 and the limiting support sleeve 53 to be pulled outward to a specified working distance. The third telescopic adjusting arm 50 is locked and positioned again by screwing the first locking threaded post 49. Then, an auxiliary support prism 52 is placed inside the limiting support sleeve 53, so that the bottom end of the auxiliary support prism 52 is inserted into the inside of the limiting support sleeve 53. The second locking threaded post 51 is screwed to fix the auxiliary support prism 52 inside the limiting support sleeve 53. Then, a pad is placed at the bottom of the auxiliary support prism 52 so that the bottom end of the auxiliary support prism 52 contacts the ground for support.

[0032] The synchronous drive wheel 46 is rotatably mounted inside the first mounting slot 9 on both sides, the second motor 44 is fixedly mounted on the chassis 10, and the auxiliary support part 4 is folded inside the first mounting slot 9 so that it does not occupy space when not in use.

[0033] The second rotating adjustment gear 35 is rotatably engaged inside the second mounting groove 32. The second rotating adjustment gear 35 in the first auxiliary support device 21 and the second auxiliary support device 22 are meshed together. The drive end of the first motor 33 is fixedly connected to the upper middle part of the second rotating adjustment gear 35 in the second auxiliary support device 22, thereby driving the second rotating adjustment gear 35 to rotate.

[0034] The first limiting support arm 24 is rotatably engaged inside the limiting adjustment groove 6, and the third limiting support arm 48 is rotatably engaged between the second force-bearing support plates 11, thereby achieving the function of stabilizing the distribution of the supporting force.

[0035] The first rotating adjusting gear 23 is rotatably installed inside the mounting chamber at the bottom of the mounting platform 8. The first rotating adjusting gear 23 in the first support part 17 and the second support part 19 are respectively meshed with the two sides of the U-shaped adjusting gear plate 18. The fixed mounting seat 15 and the limiting support seat 16 are fixedly installed below the mounting platform 8 by bolts, which play the role of fixing support and limiting.

[0036] Working principle: Before the crane body 13 operates, the control button in the cab 1 controls the operation of the third electric cylinder 34 in the first support stabilizing part 2 and the second support stabilizing part 3. The third electric cylinder 34 causes the first telescopic adjusting arm 25 to slide outward a specified distance. Then, the control button in the cab 1 controls the operation of the first electric cylinder 14 in the first support stabilizing part 2 and the second support stabilizing part 3. The first electric cylinder 14 drives the U-shaped adjusting tooth plate 18 to telescopically move a specified distance. The moving U-shaped adjusting tooth plate 18 synchronously drives the first rotating adjusting tooth plate 23 in the first support part 17 and the second support part 19 to rotate. Indirectly adjust and control the support position of the bottom outer ends of the first support part 17 and the second support part 19, and adjust the angle and position of the opening support between the first support part 17 and the second support part 19. After adjustment, control the operation of the second electric cylinder 28 on the symmetrically arranged first support leg 27. The second electric cylinder 28 causes the first telescopic support leg 29 to slide outward along the inside of the first support leg 27, so that the first support base 31 contacts the ground. Then, start the first motor 33, which drives the second rotation adjustment gear 35 in the second auxiliary support device 22 set on the outer ends of the first support part 17 and the second support part 19 to rotate. Due to the first auxiliary support device 21 The second auxiliary support device 21 is meshed with the second rotating adjusting gear 35 in the second auxiliary support device 22. Therefore, when the second rotating adjusting gear 35 in the second auxiliary support device 22 rotates, the second rotating adjusting gear 35 in the first auxiliary support device 21 can rotate synchronously. This allows the first auxiliary support device 21 and the second auxiliary support device 22, located at the outer ends of the first support part 17 and the second support part 19, to automatically adjust their operating angles. After adjustment, the fourth electric hydraulic cylinder 37 in the first auxiliary support device 21 and the second auxiliary support device 22 is activated to slide the second telescopic adjusting arm 43 outward a specified distance along the second limiting support arm 36. Then, the first auxiliary support device 21 is activated. The fifth electric cylinder 41 in the support device 21 and the second auxiliary support device 22 moves the second telescopic support leg 40 downward a specified distance, so that the second support base 38 contacts the ground. Then, the second electric cylinder 28 and the fifth electric cylinder 41 are activated simultaneously, so that the first pressure sensor 30 and the second pressure sensor 39 detect sufficient compressive force. At this time, it indicates that each support part has achieved stable and sufficient support, so that the angle and position of the first support stabilizing part 2 and the second support stabilizing part 3 are automatically adapted and controlled, and the bottom of the first support stabilizing part 2 and the second support stabilizing part 3 can achieve large-area multi-point stable support and reinforcement. When the crane body 13 lifts a large load, after the first support stabilizing part 2 and the second support stabilizing part 3 have fully achieved automatic support and reinforcement, the second motor 44 in the auxiliary support parts 4 on both sides of the carriage 12 is started. The second motor 44 can drive the synchronous drive wheel 46 and the rotating adjustment plate 47 in the middle to rotate inside the first mounting groove 9. Since the synchronous drive wheels 46 are driven by the synchronous rotating belt 45, when one synchronous drive wheel 46 and the rotating adjustment plate 47 rotate, the other synchronous drive wheels 46 and the rotating adjustment plate 47 rotate simultaneously, causing each of the third limit support arms 48 folded in the first mounting groove 9 to rotate outward and extend. Then, by turning the first locking threaded column 49, the third telescopic adjustment arm 50 is made to extend outward. Pull the limiting support sleeve 53 outward to the specified usage distance, and lock the third telescopic adjustment arm 50 again by turning the first locking threaded post 49. Then, place the auxiliary support prism 52 inside the limiting support sleeve 53 so that the bottom end of the auxiliary support prism 52 is inserted into the inside of the limiting support sleeve 53. Turn the second locking threaded post 51 to fix the auxiliary support prism 52 inside the limiting support sleeve 53. Then, place a pad at the bottom of the auxiliary support prism 52 so that the bottom end of the auxiliary support prism 52 contacts the ground for support. This allows the two sides of the carriage 12 to achieve multi-point stable support. Therefore, the auxiliary support part 4 can achieve the function of auxiliary strengthening and stabilizing support under the premise that the first support stabilizing part 2 and the second support stabilizing part 3 are in use.

[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 capable of automatically extending outriggers, comprising a cab (1), a first support and stabilizing part (2), a second support and stabilizing part (3), an auxiliary support part (4), wheels (5), a limit adjustment groove (6), a first load-bearing support plate (7), a mounting platform (8), a first mounting groove (9), a chassis (10), a second load-bearing support plate (11), a truck body (12), and a crane body (13), characterized in that: The carriage (12) is located on the upper part of the chassis (10), and the cab (1) is located on the upper front end of the chassis (10). The first load-bearing support plate (7) is symmetrically distributed between the cab (1) and the two sides of the carriage (12). The bottom end of the first load-bearing support plate (7) is fixedly connected to the chassis (10). The mounting platform (8) is fixedly installed between the upper ends of the first load-bearing support plate (7). The bottom of the crane body (13) is fixedly connected to the mounting platform (8). The limit adjustment groove (6) is symmetrically opened through the first load-bearing support plate (7). The first mounting groove (9) is opened between the bottom sides of the chassis (10) and the carriage (12). The second force-bearing support plate (11) is symmetrically fixedly installed inside the first mounting groove (9). The first support stabilizing part (2) and the second support stabilizing part (3) are mirror-symmetrically arranged between the cab (1) and the carriage (12). The first support stabilizing part (2) and the second support stabilizing part (3) are located below the crane body (13). The auxiliary support part (4) is distributed between the two sides of the carriage (12) and the chassis (10). The auxiliary support part (4) is arranged inside the first mounting groove (9). The wheel (5) is located below the carriage (12) and the cab (1). The wheel (5) is rotatably installed on the bottom of both sides of the chassis (10).

2. A truck-mounted crane capable of automatically extending its outriggers according to claim 1, characterized in that: The first support and stabilizing part (2) includes a first electric cylinder (14), a fixed mounting base (15), a limiting support base (16), a first support part (17), a U-shaped adjusting toothed plate (18), and a second support part (19). The second support part (19) and the first support part (17) are arranged in a mirror symmetrical manner. The U-shaped adjusting toothed plate (18) is arranged between the second support part (19) and the first support part (17). The first electric cylinder (14) is fixedly mounted on the fixed mounting base (15), and the front end of the first electric cylinder (14) is fixedly connected to the middle part of the U-shaped adjusting toothed plate (18). The front end of the first electric cylinder (14) is slidably inserted into the limiting support base (16).

3. A truck-mounted crane capable of automatically extending its outriggers according to claim 2, characterized in that: The first support part (17) includes a main support device (20), a first auxiliary support device (21) and a second auxiliary support device (22). The first auxiliary support device (21) and the second auxiliary support device (22) are located at the outer end of the main support device (20), and the first auxiliary support device (21) and the second auxiliary support device (22) have the same structure.

4. A truck-mounted crane capable of automatically extending its outriggers according to claim 3, characterized in that: The main support device (20) includes a first rotating adjusting gear (23), a first limiting support arm (24), a first telescopic adjusting arm (25), a mounting frame (26), a first support leg (27), a second electric cylinder (28), a first telescopic support leg (29), a first pressure sensor (30), a first support base (31), a second mounting groove (32), a first motor (33), and a third electric cylinder (34). The first limiting support arm (24) is fixedly connected to the outer end of the first rotating adjusting gear (23). The first telescopic adjusting arm (25) is slidably engaged inside the end of the first limiting support arm (24) away from the first rotating adjusting gear (23). The third electric cylinder (34) is fixedly installed on both sides of the first limiting support arm (24). The front end of the third electric cylinder (34) is fixedly connected to the first telescopic adjusting arm (25). The mounting frame ( 26) Symmetrically fixedly connected to the end of the first telescopic adjustment arm (25) away from the first limiting support arm (24), the second mounting groove (32) is opened inside the mounting frame (26), the first motor (33) is fixedly installed on the upper end of the mounting frame (26), the upper end of the first support leg (27) is fixedly connected to the bottom end of the mounting frame (26) by bolts, the first telescopic support leg (29) is slidably engaged inside the bottom end of the first support leg (27), the second electric cylinder (28) is evenly fixedly installed on the side end of the first support leg (27), and the bottom end of the second electric cylinder (28) is fixedly connected to the side end of the first telescopic support leg (29), the first pressure sensor (30) is fixedly connected to the bottom end of the first telescopic support leg (29), and the first support base (31) is fixedly connected to the bottom end of the first pressure sensor (30).

5. A truck-mounted crane capable of automatically extending its outriggers according to claim 4, characterized in that: The first auxiliary support device (21) includes a second rotating adjusting gear (35), a second limiting support arm (36), a fourth electric cylinder (37), a second support base (38), a second pressure sensor (39), a second telescopic support leg (40), a fifth electric cylinder (41), a second support leg (42), and a second telescopic adjusting arm (43). The second limiting support arm (36) is fixedly connected to the second telescopic adjusting arm (43), which is slidably engaged with the end of the second limiting support arm (36) away from the second rotating adjusting gear (35). The fourth electric cylinder (37) is fixedly installed on the second limiting support arm (35). On both sides of 36), the second support leg (42) is fixedly installed at the bottom end of the second telescopic adjustment arm (43) by bolts, the second telescopic support leg (40) is slidably engaged inside the bottom end of the second support leg (42), the fifth electric cylinder (41) is evenly fixedly installed on the outer end of the second support leg (42), the bottom end of the fifth electric cylinder (41) is fixedly connected to the side end of the second telescopic support leg (40), the second pressure sensor (39) is fixedly connected to the bottom end of the second telescopic support leg (40), and the second support base (38) is fixedly connected to the bottom end of the second pressure sensor (39).

6. A truck-mounted crane capable of automatically extending its outriggers according to claim 5, characterized in that: The auxiliary support unit (4) includes a second motor (44), a synchronous rotating belt (45), a synchronous drive wheel (46), a rotating adjusting disc (47), a third limiting support arm (48), a first locking threaded post (49), a third telescopic adjusting arm (50), a second locking threaded post (51), and a limiting support sleeve (53). The rotating adjusting discs (47) are evenly distributed. The third limiting support arm (48) is fixedly connected to the rotating adjusting discs (47). The synchronous drive wheel (46) is fixedly connected to both sides of the rotating adjusting discs (47). The third telescopic adjusting arm (50) is slidably engaged inside the third limiting support arm (48). The first locking threaded post (49) is threadedly inserted into the third limiting support arm (48). The front end of the third telescopic adjustment arm (50) is pressed against the outer wall of the third telescopic adjustment arm (50). The limiting support sleeve (53) is fixedly connected to one end of the third telescopic adjustment arm (50) away from the third limiting support arm (48). An auxiliary support prism (52) is fixedly provided inside the limiting support sleeve (53). The second locking threaded column (51) is evenly threaded and rotated into the limiting support sleeve (53). The front end of the second locking threaded column (51) is pressed against the upper end of the auxiliary support prism (52). The synchronous rotating belt (45) is rotatably arranged between adjacent synchronous drive wheels (46). The second motor (44) is arranged below the rotating adjustment disc (47) at the middle position. The driving end of the second motor (44) is fixedly connected to the bottom end of the synchronous drive wheel (46).

7. A truck-mounted crane capable of automatically extending its outriggers according to claim 6, characterized in that: The synchronous drive wheel (46) is rotatably mounted on both sides inside the first mounting groove (9), the second motor (44) is fixedly mounted on the chassis (10), and the auxiliary support part (4) is folded and disposed inside the first mounting groove (9).

8. A truck-mounted crane capable of automatically extending its outriggers according to claim 7, characterized in that: The second rotating adjustment gear (35) is rotatably engaged inside the second mounting groove (32). The first auxiliary support device (21) and the second auxiliary support device (22) are meshed together. The drive end of the first motor (33) is fixedly connected to the upper middle part of the second rotating adjustment gear (35) in the second auxiliary support device (22).

9. A truck-mounted crane capable of automatically extending its outriggers according to claim 8, characterized in that: The first limiting support arm (24) is rotatably engaged inside the limiting adjustment groove (6), and the third limiting support arm (48) is rotatably engaged between the second force-bearing support plates (11).

10. A truck-mounted crane capable of automatically extending outriggers according to claim 9, characterized in that: The first rotating adjustment gear (23) is rotatably mounted on the bottom of the mounting platform (8). The first rotating adjustment gear (23) in the first support part (17) and the second support part (19) are respectively meshed with the two sides of the U-shaped adjustment gear plate (18). The fixed mounting seat (15) and the limiting support seat (16) are fixedly mounted on the bottom of the mounting platform (8) by bolts.

Images