Flat plate assembly of double-parking-space large flat plate wrecker and wrecker

Abstract

The utility model relates to a flat plate assembly of a double-parking-space large flat plate wrecker and the wrecker, and belongs to the technical field of wrecker production. Comprising a middle flat plate assembly and a folding tail plate assembly which are installed on an auxiliary frame, the folding tail plate assembly is installed on the tail portion of the middle flat plate assembly, and a middle plate driving oil cylinder which drives the auxiliary frame to do linear motion relative to a main frame is further installed on the middle flat plate assembly. The middle flat plate assembly is provided with a front flat plate driving assembly for driving the front flat plate assembly to stretch out and draw back relative to the middle flat plate assembly and a front flat plate guiding assembly for guiding stretching out and drawing back of the front flat plate assembly. The utility model has the following beneficial effects: the front flat plate driving component is utilized to drive the front flat plate assembly to extend out relative to the middle flat plate assembly, so that the overall bearing length of the flat plate can be conveniently adjusted, the bearing length and area of the flat plate are further expanded, and a large flat plate with two parking positions can be formed.

Description

Technical Field

[0001] This utility model relates to a flatbed assembly and a wrecker for a double-carriage-space large flatbed wrecker, belonging to the field of wrecker production technology. Background Technology

[0002] A flatbed tow truck is a type of road clearing and road rescue vehicle, mainly used for the rescue and clearing of broken, accident-damaged, and illegally parked vehicles. It is a special vehicle that uses a towing mechanism to pull vehicles onto a flatbed for transportation.

[0003] Patent No. 202320578175.5 discloses a chassis for a recovery vehicle using a lightweight flatbed. Multiple holes are evenly punched upwards on the steel plate, each hole having an upward-protruding perimeter. The protrusions are higher than the plane of the steel plate, and form a flange towards the center of the hole. This flange and the plane of the steel plate form an arc transition before forming a slope. Due to the porous structure of the steel plate, the steel plate is lightweight and the plane does not accumulate water. The protrusions around each hole solve the anti-slip problem, creating friction between the tires of the recovery vehicle and the protrusions, especially increasing the friction due to the porous structure. The protrusions being higher than the plane of the steel plate and forming a flange towards the center of the hole prevents damage to the tires. The arc transition protects the tires, and the slope towards the hole increases the contact area with the tires, also providing anti-slip properties. A lightweight flatbed is laid on the frame structure, and the recovery vehicle chassis is formed by multiple horizontal and vertical reinforcing beams.

[0004] The current technology is not comprehensive and has the following drawbacks: The flatbed of the tow truck is equipped with a tailgate, which facilitates the towing of vehicles. One tow truck can achieve the function of towing two vehicles, but its flatbed can only transport one disabled vehicle without damage, which is relatively inefficient.

[0005] To solve one of the above problems, there is an urgent need for a flatbed assembly for a double-carriage-space large flatbed recovery vehicle. Utility Model Content

[0006] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to expand the load-bearing length and area of ​​the flatbed to form a large flatbed with two parking positions. To this end, a flatbed assembly and a recovery vehicle for a large flatbed recovery vehicle with two parking positions are provided, which can realize the non-damaged transportation of two disabled vehicles with relatively high efficiency.

[0007] The flatbed assembly for a dual-carriage-space large flatbed recovery vehicle of this utility model includes a middle flatbed assembly and a folding tailboard assembly mounted on a subframe. The folding tailboard assembly is mounted at the rear of the middle flatbed assembly. The middle flatbed assembly also includes a middle flatbed drive cylinder that drives the subframe to move linearly relative to the main frame. It also includes a front flatbed assembly, on which a front flatbed drive assembly that drives the front flatbed assembly to extend and retract relative to the middle flatbed assembly, and a front flatbed guide assembly that guides the extension and retraction of the front flatbed assembly, can be easily adjusted. This allows for convenient adjustment of the overall load-bearing length of the flatbed, thereby expanding the load-bearing length and area of ​​the flatbed. It can form a large flatbed with two parking positions, enabling the non-damaged transport of two disabled vehicles with relatively high efficiency.

[0008] Preferably, the front plate drive assembly is a front plate drive cylinder, with the cylinder body hinged to the lower surface of the middle plate assembly and the telescopic end of the front plate drive cylinder hinged to the lower surface of the front plate assembly. The front and middle plate assemblies extend and retract to reach the maximum effective length of the plate using a single hydraulic cylinder, resulting in a simple and reasonable structure that reduces processing and maintenance costs.

[0009] Preferably, the front flatbed guide assembly includes a left-side guide rail and a right-side guide rail mounted on both sides of the front flatbed assembly. A left-side side beam of the middle flatbed assembly is provided on one side, sliding with the left-side guide rail of the front flatbed. A right-side side beam of the middle flatbed assembly is provided on the other side, sliding with the right-side guide rail of the front flatbed. Two sets of front flatbed longitudinal beams are spaced apart on the lower surface of the front flatbed assembly, and a nylon sliding strip for a clearing vehicle is provided on the upper surface of the middle flatbed assembly, sliding with the front flatbed longitudinal beams. This ensures that the front flatbed assembly and the middle flatbed assembly can cooperate to form a stable telescopic structure, and the structure is simple and reasonable, reducing manufacturing difficulty.

[0010] Preferably, the two sets of front plate longitudinal beams are a first front plate longitudinal beam and a second front plate longitudinal beam arranged at intervals. The length direction of both the first and second front plate longitudinal beams is consistent with that of the left and right guide rails of the front plate. The upper surface of the middle plate assembly is provided with a nylon sliding strip A for the wrecker vehicle that slides in conjunction with the lower surface of the first front plate longitudinal beam, and a nylon sliding strip B for the wrecker vehicle that slides in conjunction with the lower surface of the second front plate longitudinal beam. During use, the nylon sliding strips have high wear resistance and can withstand a large amount of friction, significantly extending their service life.

[0011] Preferably, the nylon slider A of the clearing vehicle is composed of multiple nylon sliders arranged in a line. The nylon sliders have good self-lubricating properties, reducing friction and making the slider movement smoother, while also reducing noise.

[0012] Preferably, the left guide rail of the front flat plate includes an outer side plate, the upper part of which is bent to form a horizontal top plate, and the other side of which is bent downward to form an inner side plate parallel to the outer side plate. The inner side plate is welded and fixedly connected to the front flat plate assembly, and the lower part of the outer side plate is bent to form a horizontal bottom plate. The left guide rail of the front flat plate is made of steel plate and, combined with the side beam, can meet the requirements for stable load-bearing.

[0013] Preferably, the left side beam of the middle plate is a rectangular tubular structure, and four sets of wear-resistant strips are respectively provided on the four outer peripheral surfaces of the left side beam of the middle plate, which slide in cooperation with the inner walls of the outer side plate, top plate, bottom plate, and inner side plate. During use, the wear-resistant strips, due to their high wear resistance, can withstand a large amount of friction, thus significantly extending their service life.

[0014] Preferably, the wear-resistant strip is made of nylon.

[0015] Preferably, the left guide rail of the front plate and the right guide rail of the front plate have the same structure and are symmetrically distributed on both sides of the front plate assembly. Similarly, the left side beam of the middle plate and the right side beam of the middle plate have the same structure and are symmetrically distributed on both sides of the middle plate assembly. This symmetrical design ensures stable load-bearing capacity.

[0016] Preferably, both the front flat plate assembly and the middle flat plate assembly have flat plate reinforcing ribs on their lower surfaces to enhance the overall structural strength.

[0017] This utility model also discloses a wrecker vehicle, characterized in that it includes the above-mentioned double-space large flatbed wrecker vehicle flatbed assembly.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The flatbed assembly for the dual-carriage-space large flatbed recovery vehicle described in this utility model, by adding a front flatbed assembly and a front flatbed guide assembly, can cooperate with the middle flatbed assembly to form a telescopic structure. The middle flatbed drive cylinder can be controlled to extend first, and the middle flatbed drive cylinder can drive the front flatbed assembly to move backward relative to the main frame in coordination with the middle flatbed assembly. Then, the front flatbed drive assembly is controlled to extend, and the front flatbed drive assembly is used to extend the front flatbed assembly relative to the middle flatbed assembly. This allows for convenient adjustment of the overall load-bearing length of the flatbed, thereby expanding the load-bearing length and area of ​​the flatbed. It can form a large flatbed with two parking positions, enabling the non-damaged transportation of two disabled vehicles with relatively high efficiency.

[0020] The flatbed assembly of the dual-space large flatbed recovery vehicle described in this utility model has a front and middle flatbed assembly that extends and retracts to reach the maximum effective length of the flatbed through a hydraulic cylinder. The structure is simple and reasonable, and can reduce processing and maintenance costs.

[0021] The flatbed assembly of the dual-space large flatbed wrecker of this utility model includes a left side beam on one side of the middle flatbed assembly that slides in conjunction with the left side guide rail of the front flatbed, and a right side beam on the other side of the middle flatbed assembly that slides in conjunction with the right side guide rail of the front flatbed. Two sets of front flatbed longitudinal beams are spaced apart on the lower surface of the front flatbed assembly, and nylon sliding strips for the wrecker vehicle slide in conjunction with the front flatbed longitudinal beams are provided on the upper surface of the middle flatbed assembly. This design ensures that the front flatbed assembly and the middle flatbed assembly can cooperate to form a stable telescopic structure, and the structure is simple and reasonable, reducing manufacturing difficulty.

[0022] The tow truck described in this utility model has the advantages brought by the improved flatbed assembly of the double-carriage large flatbed tow truck. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0024] Figure 1 Side view of the flatbed assembly of a two-carriage-space large flatbed wrecker. Figure 1 (Retracted state);

[0025] Figure 2 A top view of the flatbed assembly of a two-bay flatbed wrecker;

[0026] Figure 3 for Figure 1 AA section diagram;

[0027] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0028] Figure 5 Side view of the flatbed assembly of a two-carriage-space large flatbed wrecker. Figure 2 (Expanded state);

[0029] Figure 6 Structure of the tow truck Figure 1 (Single parking space status);

[0030] Figure 7 Structure of the tow truck Figure 2 (Double parking space configuration);

[0031] In the diagram: 1. Front flatbed assembly; 2. Middle flatbed assembly; 3. Folding tailgate assembly; 4. Front plate drive cylinder; 5. Middle plate drive cylinder; 6. Middle plate left side beam; 7. Middle plate right side beam; 8. Wrecker vehicle nylon sliding strip A; 9. Wrecker vehicle nylon sliding strip B; 10. First front flatbed longitudinal beam; 11. Second front flatbed longitudinal beam; 12. Front flatbed left guide rail; 12.1. Outer side plate; 12.2. Top plate; 12.3. Bottom plate; 12.4. Inner side plate; 13. Front flatbed right guide rail; 14. Flatbed reinforcing rib; 15. First wear-resistant strip; 16. Subframe. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0033] Example 1, such as Figure 1 , Figure 2 and Figure 5 As shown, the flatbed assembly of the dual-position large flatbed wrecker includes a middle flatbed assembly 2 and a folding tailboard assembly 3 mounted on a subframe 16. The folding tailboard assembly 3 is mounted at the rear of the middle flatbed assembly 2. The middle flatbed assembly 2 is also equipped with a middle flatbed drive cylinder 5 that drives the subframe 16 to move linearly relative to the main frame. It also includes a front flatbed assembly 1. The middle flatbed assembly 2 is provided with a front flatbed drive assembly that drives the front flatbed assembly 1 to extend and retract relative to the middle flatbed assembly 2, and a front flatbed guide assembly that guides the extension and retraction of the front flatbed assembly 1.

[0034] The middle flatbed assembly 2, the folding tailgate assembly 3, and the subframe 16 are all existing structures. This application adds a front flatbed assembly 1 and a front flatbed guide assembly, which can cooperate with the middle flatbed assembly 2 to form a telescopic structure. In the unextended state, the front flatbed assembly is above the middle flatbed assembly. The middle plate drive cylinder 5 can be controlled to extend first. The middle plate drive cylinder 5 can drive the front flatbed assembly 1 and the middle flatbed assembly 2 to move backward relative to the main frame. Then, the front flatbed drive assembly can be controlled to extend. The front flatbed assembly 1 is driven to extend relative to the middle flatbed assembly 2 by the front flatbed drive assembly. The overall load-bearing length of the flatbed can be easily adjusted, thereby expanding the load-bearing length and area of ​​the flatbed, and forming a large flatbed with two parking positions.

[0035] In our company's actual production, the front flat plate assembly 1, after being unfolded relative to the middle flat plate assembly 2 (by... Figure 1 Switch to Figure 5(In this state), the maximum effective length of the multi-flatbed combination is 2000mm longer than that of the old-style flatbed tow truck of the same type. The front and middle flatbed assemblies are extended and retracted by a hydraulic cylinder to reach the maximum effective length of the flatbed, which can pull two cars. This solves the problem of road clearing and rescue for market customers, improves the social benefits of road clearing and rescue, and thus also improves the economic benefits of clearing and rescue personnel.

[0036] Example 2, as Figure 1 , Figure 2 and Figure 5 As shown, the flatbed assembly of the dual-position large flatbed wrecker includes a middle flatbed assembly 2 and a folding tailboard assembly 3 mounted on a subframe 16. The folding tailboard assembly 3 is mounted at the rear of the middle flatbed assembly 2. The middle flatbed assembly 2 is also equipped with a middle flatbed drive cylinder 5 that drives the subframe 16 to move linearly relative to the main frame. It also includes a front flatbed assembly 1. The middle flatbed assembly 2 is provided with a front flatbed drive assembly that drives the front flatbed assembly 1 to extend and retract relative to the middle flatbed assembly 2, and a front flatbed guide assembly that guides the extension and retraction of the front flatbed assembly 1.

[0037] Furthermore, referring to Figure 3 The front plate drive assembly is a front plate drive cylinder 4. The cylinder body of the front plate drive cylinder 4 is hinged to the lower surface of the middle plate assembly 2, and the telescopic end of the front plate drive cylinder 4 is hinged to the lower surface of the front plate assembly 1. The front and middle plate assemblies extend and retract to reach the maximum effective length of the plate through a single hydraulic cylinder. The structure is simple and reasonable, and it can reduce processing and maintenance costs.

[0038] Furthermore, referring to Figure 4 The front flatbed guide assembly includes a left-side guide rail 12 and a right-side guide rail 13 mounted on both sides of the front flatbed assembly 1. A left-side side beam 6, which slides along the left-side guide rail 12, is provided on one side of the middle flatbed assembly 2. A right-side side beam 7, which slides along the right-side guide rail 13, is provided on the other side of the middle flatbed assembly 2. Two sets of front flatbed longitudinal beams are spaced apart on the lower surface of the front flatbed assembly 1. A nylon sliding strip for a clearing vehicle, which slides along the front flatbed longitudinal beams, is provided on the upper surface of the middle flatbed assembly 2. This design ensures that the front flatbed assembly 1 and the middle flatbed assembly 2 can cooperate to form a stable telescopic structure, and the structure is simple and reasonable, reducing manufacturing difficulty.

[0039] Furthermore, the two sets of front plate longitudinal beams are a first front plate longitudinal beam 10 and a second front plate longitudinal beam 11, which are spaced apart. The length direction of both the first front plate longitudinal beam 10 and the second front plate longitudinal beam 11 is consistent with that of the left side guide rail 12 and the right side guide rail 13 of the front plate. The upper surface of the middle plate assembly 2 is provided with a nylon sliding strip A8 that slides in conjunction with the lower surface of the first front plate longitudinal beam 10 and a nylon sliding strip B9 that slides in conjunction with the lower surface of the second front plate longitudinal beam 11. During use, the nylon sliding strips have high wear resistance and can withstand a large amount of friction, thus significantly extending their service life.

[0040] Furthermore, the nylon slider A8 of the clearing vehicle is composed of multiple nylon sliders arranged in a line. The nylon sliders have good self-lubricating properties, reducing friction and making the slider movement smoother, while also reducing noise.

[0041] Furthermore, the left side guide rail 12 of the front flat plate includes an outer side plate 12.1. The upper part of the outer side plate 12.1 is bent to form a horizontal top plate 12.2. The other side of the top plate 12.2 is bent downward to form an inner side plate 12.4 parallel to the outer side plate 12.4. The inner side plate 12.4 is welded and fixedly connected to the front flat plate assembly 1. The lower part of the outer side plate 12.1 is bent to form a horizontal bottom plate 12.3. The left side guide rail 12 of the front flat plate is made of steel plate and, combined with the side beam, can meet the requirements of stable load-bearing.

[0042] Furthermore, the left side beam 6 of the middle plate is a rectangular tubular structure. Four sets of outer peripheral surfaces of the left side beam 6 are respectively provided with a first wear-resistant strip 15, a second wear-resistant strip, a third wear-resistant strip, and a fourth wear-resistant strip that slide and cooperate with the inner walls of the outer side plate 12.1, the top plate 12.2, the bottom plate 12.3, and the inner side plate 12.4. During use, the wear-resistant strips, due to their high wear resistance, can withstand a large amount of friction, thus significantly extending their service life.

[0043] Furthermore, the wear-resistant strip is made of nylon.

[0044] Furthermore, the left guide rail 12 and the right guide rail 13 of the front plate have the same structure and are symmetrically distributed on both sides of the front plate assembly 1. The left side beam 6 and the right side beam 7 of the middle plate have the same structure and are symmetrically distributed on both sides of the middle plate assembly 2. This symmetrical design meets the requirements for stable load-bearing capacity.

[0045] Furthermore, both the front flat plate assembly 1 and the middle flat plate assembly 2 are provided with flat plate reinforcing ribs 14 on their lower surfaces to enhance the overall structural strength.

[0046] The flatbed assembly for the dual-space large flatbed wrecker described in this utility model, by adding a front flatbed assembly and a front flatbed guide assembly, can cooperate with the middle flatbed assembly to form a telescopic structure. The middle plate drive cylinder can be controlled to extend first, and the middle plate drive cylinder can drive the front flatbed assembly to move backward relative to the main frame in coordination with the middle flatbed assembly. Then, the front flatbed drive assembly is controlled to extend, and the front flatbed assembly is extended relative to the middle flatbed assembly. This allows for convenient adjustment of the overall load-bearing length of the flatbed, thereby expanding the load-bearing length and area of ​​the flatbed, and forming a large flatbed with two parking positions.

[0047] The flatbed assembly of the dual-space large flatbed recovery vehicle described in this utility model has a front and middle flatbed assembly that extends and retracts to reach the maximum effective length of the flatbed through a hydraulic cylinder. The structure is simple and reasonable, and can reduce processing and maintenance costs.

[0048] The flatbed assembly of the dual-space large flatbed wrecker of this utility model includes a left side beam on one side of the middle flatbed assembly that slides in conjunction with the left side guide rail of the front flatbed, and a right side beam on the other side of the middle flatbed assembly that slides in conjunction with the right side guide rail of the front flatbed. Two sets of front flatbed longitudinal beams are spaced apart on the lower surface of the front flatbed assembly, and nylon sliding strips for the wrecker vehicle slide in conjunction with the front flatbed longitudinal beams are provided on the upper surface of the middle flatbed assembly. This design ensures that the front flatbed assembly and the middle flatbed assembly can cooperate to form a stable telescopic structure, and the structure is simple and reasonable, reducing manufacturing difficulty.

[0049] Example 3, as Figure 6-7 As shown, the recovery vehicle includes the aforementioned double-carriage large flatbed recovery vehicle flatbed assembly. Because this recovery vehicle uses an improved double-carriage large flatbed recovery vehicle flatbed assembly, it also possesses the advantages brought by the double-carriage large flatbed recovery vehicle flatbed assembly.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0051] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A flatbed assembly for a dual-position large flatbed wrecker, comprising a middle flatbed assembly (2) and a folding tailboard assembly (3) mounted on a subframe (16), wherein the folding tailboard assembly (3) is mounted at the rear of the middle flatbed assembly (2), and a middle flatbed drive cylinder (5) is also mounted on the middle flatbed assembly (2) to drive the subframe (16) to move linearly relative to the main frame, characterized in that: It also includes a front flat assembly (1), and the middle flat assembly (2) is provided with a front flat drive assembly that drives the front flat assembly (1) to extend and retract relative to the middle flat assembly (2) and a front flat guide assembly that guides the extension and retraction of the front flat assembly (1).

2. The flatbed assembly of the dual-bay large flatbed wrecker truck according to claim 1, characterized in that, The front plate drive assembly is a front plate drive cylinder (4). The cylinder body of the front plate drive cylinder (4) is hinged to the lower surface of the middle plate assembly (2), and the telescopic end of the front plate drive cylinder (4) is hinged to the lower surface of the front plate assembly (1).

3. The flatbed assembly of the dual-bay large flatbed wrecker truck according to claim 2, characterized in that, The front flatbed guide assembly includes a left front flatbed guide rail (12) and a right front flatbed guide rail (13) installed on both sides of the front flatbed assembly (1). The middle flatbed assembly (2) has a left side beam (6) that slides with the left front flatbed guide rail (12) on one side. The middle flatbed assembly (2) has a right side beam (7) that slides with the right front flatbed guide rail (13) on the other side. The lower surface of the front flatbed assembly (1) is provided with two sets of front flatbed longitudinal beams at intervals. The upper surface of the middle flatbed assembly (2) is provided with a nylon sliding strip for a clearing vehicle that slides with the front flatbed longitudinal beams.

4. The flatbed assembly of the dual-bay large flatbed wrecker truck according to claim 3, characterized in that, The two sets of front plate longitudinal beams are a first front plate longitudinal beam (10) and a second front plate longitudinal beam (11) arranged at intervals. The first front plate longitudinal beam (10) and the second front plate longitudinal beam (11) are both in the same length direction as the left guide rail (12) and the right guide rail (13) of the front plate. The upper surface of the middle plate assembly (2) is provided with a nylon sliding strip A (8) of the clearing vehicle that slides in cooperation with the lower surface of the first front plate longitudinal beam (10) and a nylon sliding strip B (9) of the clearing vehicle that slides in cooperation with the lower surface of the second front plate longitudinal beam (11).

5. The flatbed assembly of the dual-bay large flatbed wrecker truck according to claim 4, characterized in that, The nylon slider A (8) of the clearing vehicle is composed of multiple nylon sliders arranged in a line.

6. The flatbed assembly of the dual-bay large flatbed wrecker truck according to claim 5, characterized in that, The left guide rail (12) of the front flat plate includes an outer plate (12.1), the upper part of the outer plate (12.1) is bent to form a horizontal top plate (12.2), the other side of the top plate (12.2) is bent downward to form an inner plate (12.4) parallel to the outer plate (12.1), the inner plate (12.4) is welded and fixedly connected to the front flat plate assembly (1), and the lower part of the outer plate (12.1) is bent to form a horizontal bottom plate (12.3).

7. The flatbed assembly of the dual-bay large flatbed wrecker truck according to claim 6, characterized in that, The left side beam (6) of the middle plate is a rectangular tubular structure. The four outer peripheral surfaces of the left side beam (6) of the middle plate are respectively provided with a first wear-resistant strip (15), a second wear-resistant strip, a third wear-resistant strip and a fourth wear-resistant strip that slide in cooperation with the inner walls of the outer side plate (12.1), the top plate (12.2), the bottom plate (12.3) and the inner side plate (12.4).

8. The flatbed assembly of the dual-bay large flatbed wrecker truck according to claim 7, characterized in that, The left guide rail (12) of the front plate has the same structure as the right guide rail (13) of the front plate and is symmetrically distributed on both sides of the front plate assembly (1). The left side beam (6) of the middle plate and the right side beam (7) of the middle plate have the same structure and are symmetrically distributed on both sides of the middle plate assembly (2).

9. A tow truck, characterized in that, Includes the flatbed assembly of the dual-space large flatbed recovery vehicle as described in any one of claims 2-7.

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