A swing arm type side loading device, side loading wrecker and side loading method

Abstract

The application discloses a swing arm type side mounting device, a side mounting wrecker and a side mounting method, relates to the technical field of wreckers, and comprises two oppositely arranged transverse traction telescopic mechanisms, and a tray is arranged below each of the two transverse traction telescopic mechanisms. Two scissor type lifting machines are arranged in the tray in front of and behind each other, and the two scissor type lifting machines can be laterally extended from the tray to the positions of the wheels of a fault vehicle and abut against the front edges and the rear edges of the wheels of the fault vehicle respectively, and are used for lifting the fault vehicle. The transverse traction telescopic mechanism can be extended to below the wheels of the lifted fault vehicle, and after the scissor type lifting machine is reset, the fault vehicle is transversely moved to a preset position. The application is combined with the independent tire supporting of the scissor type lifting machine and the non-alignment connection of the multi-stage sliding groove, utilizes the four-point tire supporting and the swing arm type side moving structure, eliminates the risk of the chassis of the rescued vehicle being bumped, greatly improves the stability and the automation degree of heavy load side mounting, and completely solves the problems of guiding jamming and unstable center of gravity in traditional side mounting operation.

Description

Technical Field

[0001] This invention relates to the field of recovery vehicle technology, specifically to a swing-arm side-loading device, a side-loading recovery vehicle, and a side-loading method. Background Technology

[0002] Existing side-mounted tow trucks primarily achieve lateral movement and vertical lifting of the rescue vehicle through lateral and vertical mechanisms. These mechanisms are mostly located above the chassis, near the left or right side. The towing devices in these trucks are generally centrally located, occupying a large space and potentially causing a lateral shift in the vehicle's center of gravity. Chinese patent "A Forklift-Type Side-Mounted Tow Truck" (Patent Publication No.: CN 119428412 A) describes a forklift-type side-mounted tow truck that lifts the chassis of the vehicle being rescued, posing a risk of damaging the chassis. Furthermore, the directional stability is poor when the pallet moves laterally. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a swing-arm side-loading device, a side-loading recovery vehicle, and a side-loading method. By combining an independent tire support with a scissor lift and a multi-stage non-aligned chute connection, and utilizing a four-point tire lifting and swing-arm side-shifting structure, the risk of chassis collisions to the rescued vehicle is eliminated, and the stability and automation of heavy-duty side-loading are significantly improved. This completely solves the problems of guide jamming and unstable center of gravity in traditional side-loading operations.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a swing-arm type side-loading device, including two opposing lateral traction telescopic mechanisms, each with a tray below it, and two scissor lifts spaced apart in the trays, the two scissor lifts extending laterally from the trays to the wheels of the disabled vehicle and respectively abutting against the front and rear edges of the disabled vehicle's wheels for lifting the disabled vehicle; the lateral traction telescopic mechanism can extend under the wheels of the lifted disabled vehicle, and after the scissor lifts reset, it is used to move the disabled vehicle laterally to a preset position.

[0005] Based on the above technical solution, the lateral traction telescopic mechanism includes a first-stage slide groove, a second-stage slide groove and a third-stage slide groove arranged in sequence, and a first hydraulic cylinder for driving the extension and retraction of the second-stage slide groove is provided in the first-stage slide groove, and a second hydraulic cylinder for driving the extension and retraction of the third-stage slide groove is provided in the second-stage slide groove.

[0006] Based on the above technical solution, the lateral movement speed of the third-stage chute is greater than that of the second-stage chute, and the two speeds are in a multiple relationship.

[0007] Based on the above technical solution, the outer end of the three-stage slide is provided with a movable support leg.

[0008] Based on the above technical solution, a number of short longitudinal beams are fixedly installed at the bottom of the primary chute, and the short longitudinal beams are connected to the pallet through a swing arm.

[0009] Based on the above technical solution, the primary chute is connected to the chassis of the recovery vehicle via a longitudinal displacement cylinder, which is used to drive the primary chute to move longitudinally.

[0010] Based on the above technical solution, the scissor lift includes a base plate, an upper plate, two fork plates, and a lifting cylinder.

[0011] Based on the above technical solution, the distance between two scissor lifts located in the same pallet is adjustable, and the outer ends of the base plates of two adjacent scissor lifts located in different pallets are connected by telescopic connecting rods.

[0012] The present invention also provides a side-mounted tow truck, including a chassis, wherein the rear end of the chassis is provided with a swing arm type side-mounting device as described above, and two lateral traction telescopic mechanisms are respectively located on the front and rear sides of the rear wheel.

[0013] The present invention also provides a side-mounting method based on the above-mentioned swing arm type side-mounting device, comprising the following steps: Step S1. Adjust the lateral traction telescopic mechanism so that the centers of the two lateral traction telescopic mechanisms are aligned with the front and rear wheels of the disabled vehicle, respectively; Step S2. The tray swings down and lands; Step S3. Two sets of four scissor lifts slide laterally to directly under the chassis of the disabled vehicle. One set of two scissor lifts is positioned at the front and rear edges of the front wheels of the disabled vehicle, respectively, and the other set of two scissor lifts is positioned at the front and rear edges of the rear wheels of the disabled vehicle, respectively. Fine-tune the spacing between each scissor lift so that the front and rear wheels of the disabled vehicle are respectively seated between the upper plates of the two sets of scissor lifts. Step S4. Two sets of four scissor lifts lift the disabled vehicle simultaneously until the position of the disabled vehicle's tires is higher than the third-level chute; Step S5. The lateral traction telescopic mechanism moves laterally to below the disabled vehicle, so that all tires of the disabled vehicle are directly above the third-level chute; Step S6. The two sets of four scissor lifts descend synchronously, so that the tires of the faulty vehicle sit on the three-stage chute; Step S7. The two groups of four scissor lifts continue to descend synchronously until they close, and then move laterally back onto the tray; Step S8. The swing arm swings to lift the tray off the ground and returns it to its position directly under the chassis; Step S9. The lateral telescopic traction mechanism moves laterally back to its initial position.

[0014] The beneficial effects of this invention are as follows: 1. The receiving part (lateral traction telescopic mechanism) and the lifting part (scissor lift) of this invention operate completely independently. During operation, neither requires precise positioning or alignment, nor does it require complex guide and limiting structures. Each part completes its own action independently and then connects naturally, completely solving the jamming problem caused by poor guidance and misalignment in traditional structures. This avoids manual intervention and improves the degree of automation.

[0015] 2. This invention achieves stable four-point lifting by arranging two scissor lifts on each side of the rear wheels of the tow truck. During lifting, the scissor lifts extend directly to the front and rear edges of the disabled vehicle's tires and lift them. Compared to the traditional forklift method, this method distributes force more evenly and stably, and completely avoids the risk of bumping and damaging the disabled vehicle's chassis.

[0016] 3. This invention connects the lateral traction telescopic mechanism to the chassis via a longitudinal hydraulic cylinder, enabling it to perform longitudinal translational fine-tuning. Simultaneously, movable outriggers are installed at the ends of the three-stage sliding grooves, providing additional ground support during extension operations. This distributed force design not only improves the safety of side-loading operations but also effectively balances the overall vehicle load, preventing excessive shift of the center of gravity.

[0017] 4. This invention uses a swing arm to drive the pallet to swing flexibly to the ground, and with the gradual and smooth extension of the multi-stage chute (the second and third stage chutes are extended and retracted at different speeds through the cooperation of hydraulic cylinders and pulley groups), the entire side loading method is seamless and runs smoothly. It can quickly adapt to vehicles with different wheelbases and greatly improve the efficiency of road rescue operations. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the swing arm type side-mounted device in an embodiment of the present invention; Figure 2 This is a schematic diagram of the operation of the swing arm type side-mounted device in an embodiment of the present invention; Figure 3 This is a front view of the swing-arm side-mounted device in an embodiment of the present invention; Figure 4 This is a side view of the swing arm type side-mounted device in an embodiment of the present invention; Figure 5 This is a top view of the swing-arm side-mounted device in an embodiment of the present invention.

[0019] Figure label: 1-Chassis; 11-Rear wheel; 2- Lateral traction telescopic mechanism; 21- Primary slide rail; 22- Secondary slide rail; 23- Tertiary slide rail; 24- Movable outrigger; 25- Longitudinal hydraulic cylinder; 3-Pallet; 31-Short longitudinal beam; 32-Swing arm; 4-Scissor lift; 41-Base plate; 42-Top plate; 43-Fork plate; 44-Lifting cylinder; 45-Telescopic linkage. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0021] In the description of this invention, it should be noted that the directional terms such as "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this invention, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0023] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and its beneficial effects clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the invention.

[0024] See Figures 1-5 As shown, this embodiment of the invention provides a swing-arm type side-loading device, including two opposing lateral traction telescopic mechanisms 2. Each of the two lateral traction telescopic mechanisms 2 is provided with a tray 3 below it. Two scissor lifts 4 are arranged at a distance from front to back in the tray 3. The two scissor lifts 4 can extend laterally from the tray 3 to the wheel of the disabled vehicle and abut against the front and rear edges of the wheel of the disabled vehicle, respectively, for lifting the disabled vehicle. The lateral traction telescopic mechanism 2 can extend under the wheel of the lifted disabled vehicle. After the scissor lifts 4 are reset, they are used to move the disabled vehicle laterally to a preset position.

[0025] The lateral traction telescopic mechanism 2 includes a primary slide 21, a secondary slide 22, and a tertiary slide 23 arranged sequentially. A first hydraulic cylinder for driving the extension and retraction of the secondary slide 22 is installed within the primary slide 21, and a second hydraulic cylinder for driving the extension and retraction of the tertiary slide 23 is installed within the secondary slide 22. The tertiary slide has a C-shaped beam structure. Specifically, the lateral movement speed of the tertiary slide 23 is greater than that of the secondary slide 22, and the speed is a multiple of the latter. Movable support legs 24 are installed at the outer ends of the tertiary slide 23. Several short longitudinal beams 31 are fixedly installed at the bottom of the primary slide 21, and these short longitudinal beams 31 are connected to the pallet 3 via a swing arm 32. The pallet can swing left or right around the short longitudinal beams under the action of the swing arm. The primary slide 21 is connected to the chassis 1 of the wrecker vehicle via a longitudinal movement cylinder 25, which drives the primary slide 21 to move longitudinally.

[0026] The scissor lift 4 includes a base plate 41, an upper plate 42, two fork plates 43, and a lifting cylinder 44. Specifically, the spacing between two scissor lifts 4 located on the same pallet 3 is adjustable, and the outer ends of the base plates 41 of two adjacent scissor lifts 4 located on different pallets 3 are connected by a telescopic link 45.

[0027] The present invention also provides a side-mounted tow truck, including a chassis 1, the rear end of the chassis 1 is provided with a swing arm type side-mounting device as described above, and two lateral traction telescopic mechanisms 2 are respectively located on the front and rear sides of the rear wheel 11.

[0028] This invention also provides a side-loading method based on the above-mentioned swing-arm side-loading device. When the side-loading recovery vehicle is working, it needs to be driven to the right or left side of the disabled vehicle so that the recovery vehicle and the disabled vehicle are as close as possible and parallel while ensuring a certain safe distance. The method includes the following steps: Step S1. Adjust the lateral traction telescopic mechanism 2 so that the centers of the two lateral traction telescopic mechanisms 2 are aligned with the front and rear wheels of the disabled vehicle, respectively; Step S2. The tray 3 swings down and lands; Step S3. Two sets of four scissor lifts 4 slide laterally to directly under the chassis 1 of the disabled vehicle. One set of two scissor lifts 4 are located at the front and rear edges of the front wheels of the disabled vehicle, respectively, and the other set of two scissor lifts 4 are located at the front and rear edges of the rear wheels of the disabled vehicle, respectively. Fine-tune the spacing between each scissor lift 4 so that the front and rear wheels of the disabled vehicle sit between the upper plates 42 of the two sets of scissor lifts 4, respectively. Step S4. Two sets of four scissor lifts 4 lift the disabled vehicle simultaneously until the position of the disabled vehicle's tires is higher than the third-level chute 23; Step S5. The lateral traction telescopic mechanism 2 moves laterally to below the disabled vehicle, so that all the tires of the disabled vehicle are directly above the third-level chute 23; Step S6. The two sets of four scissor lifts 4 descend synchronously, so that the tires of the faulty vehicle sit on the three-stage chute 23; Step S7. The two sets of four scissor lifts 4 continue to descend synchronously until they close, and then move laterally back onto the tray 3; Step S8. The swing arm 32 swings to lift the tray 3 off the ground and return it to its position directly below the chassis 1; Step S9. The lateral telescopic traction mechanism moves laterally back to its initial position.

[0029] In the description of this specification, references to terms such as "an embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. Illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] This invention is not limited to the embodiments described above. Those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention. Contents not described in detail in this specification are prior art known to those skilled in the art.

Claims

1. A swing-arm type side-mounted device, comprising two oppositely arranged lateral traction telescopic mechanisms (2), characterized in that: A tray (3) is provided below each of the two lateral traction telescopic mechanisms (2). Two scissor lifts (4) are arranged in the tray (3) at intervals. The two scissor lifts (4) can extend laterally from the tray (3) to the wheel of the disabled vehicle and abut against the front and rear edges of the wheel of the disabled vehicle respectively for lifting the disabled vehicle. The lateral traction telescopic mechanism (2) can extend to the underside of the wheel of the lifted faulty vehicle. After the scissor lift (4) is reset, it is used to move the faulty vehicle laterally to a preset position.

2. The swing-arm type side-mounted device as described in claim 1, characterized in that: The lateral traction telescopic mechanism (2) includes a first-stage slide (21), a second-stage slide (22) and a third-stage slide (23) arranged in sequence. The first-stage slide (21) is equipped with a first hydraulic cylinder for driving the extension and retraction of the second-stage slide (22), and the second-stage slide (22) is equipped with a second hydraulic cylinder for driving the extension and retraction of the third-stage slide (23).

3. The swing-arm side-mounted device as described in claim 2, characterized in that: The lateral movement speed of the third-stage chute (23) is greater than that of the second-stage chute (22), and the lateral movement speed is a multiple of each other.

4. The swing-arm type side-mounted device as described in claim 2, characterized in that: The outer end of the three-stage chute (23) is provided with a movable support leg (24).

5. The swing-arm type side-mounted device as described in claim 2, characterized in that: The bottom of the primary chute (21) is fixedly provided with several short longitudinal beams (31), and the short longitudinal beams (31) are connected to the tray (3) through the swing arm (32).

6. The swing-arm type side-mounted device as described in claim 2, characterized in that: The primary chute (21) is connected to the chassis (1) of the recovery vehicle via a longitudinal displacement cylinder (25), which is used to drive the primary chute (21) to move longitudinally.

7. The swing-arm type side-mounted device as described in claim 1, characterized in that: The scissor lift (4) includes a base plate (41), an upper plate (42), two forks (43), and a lifting cylinder (44).

8. The swing-arm type side-mounted device as described in claim 7, characterized in that: The spacing between two scissor lifts (4) located in the same tray (3) is adjustable. The outer ends of the base plates (41) of two adjacent scissor lifts (4) located in different trays (3) are connected by telescopic connecting rods (45).

9. A side-mounted tow truck, comprising a chassis (1), characterized in that: The rear end of the chassis (1) is provided with a swing arm type side mounting device as described in any one of claims 1 to 8, and the two lateral traction telescopic mechanisms (2) are located on the front and rear sides of the rear wheel (11) respectively.

10. A side-mounting method based on the swing-arm type side-mounting device according to any one of claims 1 to 8, characterized in that, Includes the following steps: Step S1. Adjust the lateral traction telescopic mechanism (2) so that the centers of the two lateral traction telescopic mechanisms (2) are aligned with the front and rear wheels of the faulty vehicle, respectively; Step S2. The tray (3) swings down and lands; Step S3. Two sets of four scissor lifts (4) slide laterally to directly under the chassis (1) of the disabled vehicle. One set of two scissor lifts (4) are located at the front and rear edges of the front wheels of the disabled vehicle, respectively. The other set of two scissor lifts (4) are located at the front and rear edges of the rear wheels of the disabled vehicle, respectively. The spacing between each scissor lift (4) is finely adjusted so that the front and rear wheels of the disabled vehicle sit between the upper plates (42) of the two sets of scissor lifts (4). Step S4. Two sets of four scissor lifts (4) lift the disabled vehicle simultaneously until the position of the disabled vehicle's tires is higher than the third-level chute (23). Step S5. The lateral traction telescopic mechanism (2) moves laterally to below the disabled vehicle, so that all the tires of the disabled vehicle are directly above the third-level chute (23); Step S6. The two sets of four scissor lifts (4) descend synchronously, so that the tires of the faulty vehicle sit on the three-stage chute (23); Step S7. The two sets of four scissor lifts (4) continue to descend synchronously until they close, and then move laterally back to the tray (3); Step S8. The swing arm (32) swings to lift the tray (3) off the ground and return it to its position directly below the chassis (1); Step S9. The lateral telescopic traction mechanism moves laterally back to its initial position.

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