Carrier lifting structure

Abstract

The utility model relates to the technical field of carrying vehicles, in particular to a carrying vehicle hoisting structure which comprises a support assembly, a fork body assembly and a hoisting assembly, and the hoisting assembly is installed at the bottom of the fork body assembly and comprises a connecting rod assembly and a single wheel assembly. When the lifting device is used, the connecting rod assembly is pushed through external force to drive the single-wheel assembly to rotate and make contact with the ground, the fork assembly and the support assembly are synchronously lifted, the lifting assembly adopts a single-wheel structure to replace an original double-wheel structure, and the bearing stability and the moving stability are improved by widening the width of wheels; the fork body assembly integrally extends and is fixed to the rear end of the bottom of the support assembly, the lifting assembly is connected to the fork body assembly and the support assembly, and compared with other products, the fork body assembly is fixed to the front end of the support assembly, and the lifting assembly is only connected to the fork body assembly, so that the overall structural strength of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transport vehicles, in particular to a lifting structure of a transport vehicle. Background Art

[0002] As a crucial piece of logistics handling equipment, the design of a truck often requires customization based on actual application scenarios and requirements. In today's technological landscape, the crane's lifting system structure, fork technology, and load-bearing wheel design are all key factors influencing its performance, cost, and stability.

[0003] First, the lifting system structure of a transport truck often uses an integral support arm rotary lifting method. This method requires the support arm to have a high degree of machining precision to ensure that the cargo can be lifted and moved smoothly and accurately during the lifting process. High-precision machining not only improves the operating efficiency of the transport truck, but also reduces the risk of cargo damage caused by errors. However, this also places higher demands on the processing equipment and process, increasing manufacturing costs.

[0004] Secondly, as an essential component of a truck, the manufacturing process of the extended fork also has a profound impact on its performance. The integral pressing process is a commonly used fork manufacturing process. This process improves the strength and rigidity of the fork by pressing the fork material into a single piece. However, this process places high demands on the processing equipment, requiring high-precision molds and advanced production equipment to ensure the shape and dimensional accuracy of the fork. In addition, the integral pressing process may lead to material waste and increased processing costs.

[0005] Finally, the design of the load-bearing wheels is crucial to a truck's performance. Double narrow wheels are a common design option, which can reduce the truck's weight and improve its maneuverability. However, this design also comes with the issues of high cost and low stability. When carrying heavy loads, double narrow wheels can deform or damage due to uneven force, compromising the truck's stability and safety.

[0006] In view of this, we propose a transport vehicle lifting structure. Utility Model Content

[0007] The purpose of the present utility model is to provide a lifting structure for a transport vehicle to solve the problems raised in the above background technology.

[0008] To achieve the above objectives, the present invention provides the following technical solutions:

[0009] A transport vehicle lifting structure includes a bracket assembly and a fork assembly with one end fixed to the bottom of the bracket assembly, and also includes a lifting assembly.

[0010] The lifting assembly is mounted on the bottom of the fork assembly and includes a connecting rod assembly and a single wheel assembly; one end of the connecting rod assembly is rotatably connected to the single wheel assembly, and the other end of the connecting rod assembly is rotatably connected to the bracket assembly; the end of the single wheel assembly on the same side as the connecting rod assembly is also rotatably connected to the fork assembly;

[0011] Among them, external force pushes the connecting rod assembly, driving the single wheel assembly to rotate and contact the ground, so that the fork assembly and the bracket assembly are lifted synchronously.

[0012] As a further solution of the present invention: the fork assembly includes at least two forks, the forks are made of welded steel plates, a mounting groove is provided on the side of the forks away from the bearing surface, and the lifting assembly is installed in the mounting groove.

[0013] As a further solution of the present invention: the bracket assembly includes a base plate, and a fixing frame and a limiting plate are respectively provided on both sides of the base plate, wherein the fixing frame is used to be fixed to the vehicle frame, and the limiting plate is used to prevent the cargo from squeezing the fixing frame; a cargo fork is welded to the bottom of the base plate.

[0014] As a further solution of the present invention: the connecting rod assembly includes a rotating arm, a first connecting block, a connecting rod, a hexagonal square steel and a second connecting block connected in sequence, wherein the rotating arm and the first connecting block are rotationally connected, and the rest are threaded connections.

[0015] As a further solution of the present invention: the number of the rotating arms of the rotating arm group is two, and the first connecting block is installed between the two rotating arms and is rotatably connected to the rotating arms.

[0016] As a further solution of the present invention, the end of the rotating arm which is rotatably connected to the first connecting block is also rotatably connected to the bottom plate.

[0017] As a further solution of the present invention: the threads at both ends of the hexagonal square steel rotate in opposite directions.

[0018] As a further solution of the present invention: the single wheel assembly includes a load-bearing wheel, and wheel frames are rotatably connected on both sides of the load-bearing wheel. The end of the wheel frame away from the load-bearing wheel is rotatably connected to the second connecting block, and the end on the same side where the wheel frame is rotatably connected to the second connecting block is rotatably connected to the fork.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the lifting structure of this transporter, external force pushes the connecting rod assembly, driving the single wheel assembly to rotate and contact the ground, so that the fork assembly and the bracket assembly are lifted synchronously. By adopting a single wheel structure instead of the original double wheel structure and widening the wheel width, the load-bearing and movement stability are improved.

[0021] 2. In the lifting structure of this transporter, the fork assembly is extended as a whole and fixed to the bottom rear end of the bracket assembly, and the lifting assembly is connected to the fork assembly and the bracket assembly respectively. Compared with other products, the fork assembly is fixed to the front end of the bracket assembly and the lifting assembly is only connected to the fork assembly, which improves the overall structural strength of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the overall assembly diagram of this scheme;

[0023] Figure 2 Schematic diagram of the cross section of the fork assembly of this solution;

[0024] Figure 3 This is a schematic diagram of the bracket assembly structure of this solution;

[0025] Figure 4 This is a schematic diagram of the lifting assembly structure of this scheme.

[0026] The meaning of each number in the figure is:

[0027] 100, fork assembly; 101, cargo fork; 102, mounting slot;

[0028] 200, bracket assembly; 201, bottom plate; 202, fixing bracket; 203, limit plate;

[0029] 300. Lifting assembly; 310. Connecting rod assembly; 311. Rotating arm assembly; 312. First connecting block; 313. Connecting rod; 314. Hexagonal square steel; 315. Second connecting block; 320. Single wheel assembly; 321. Wheel frame; 322. Load-bearing wheel. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example

[0032] At present, the existing lifting system structure adopts an integral support arm rotary lifting, which requires high processing precision; the extended fork body adopts an integral pressing process, which places high demands on processing equipment and increases processing costs; the contact wheel adopts a double narrow wheel design, which is expensive and has low stability;

[0033] Therefore, see Figure 1As shown, the purpose of this embodiment is to provide a transport vehicle lifting structure, which includes a bracket assembly 200, a fork assembly 100 and a lifting assembly 300. In order to improve the overall structural strength, the fork assembly 100 is integrally extended and fixed to the bottom rear end of the bracket assembly 200, changing the force points of the fork assembly 100 and the bracket assembly 200, thereby improving the overall structural strength; at the same time, the lifting assembly 300 includes a connecting rod assembly 310 and a single wheel assembly 3 20; one end of the connecting rod assembly 310 is rotatably connected to the single wheel assembly 320, and the other end of the connecting rod assembly 310 is rotatably connected to the bracket assembly 200; the end on the same side as the single wheel assembly 320 that is rotatably connected to the connecting rod assembly 310 is also rotatably connected to the fork body assembly 100. By arranging the lifting assembly 300 between the fork body assembly 100 and the bracket assembly 200, additional fixing force is provided for the fixation between the fork body assembly 100 and the bracket assembly 200, thereby improving the stability of the overall structure.

[0034] The improvement of this embodiment lies in that: the movement of the lifting cylinder pushes the connecting rod assembly 310, driving the single wheel assembly 320 to rotate and contact the ground, so that the fork assembly 100 and the bracket assembly 200 are lifted synchronously, wherein the single wheel assembly 320 adopts a single wheel structure instead of the original double wheel structure, and improves the load-bearing and movement stability by widening the width of the wheel; the fork assembly 100 is extended as a whole and fixed to the bottom rear end of the bracket assembly 200, and the lifting assembly 300 is respectively connected to the fork assembly 100 and the bracket assembly 200. Compared with other products, the fork assembly 100 is fixed to the front end of the bracket assembly 200 and the lifting assembly 300 is only connected to the fork assembly 100, which improves the overall structural strength of the device.

[0035] Considering the convenience of placing the cargo on the fork assembly 100, Figure 2 As shown, the fork assembly 100 includes at least two forks 101, one end of which is welded to the bottom of the base plate 201. The cargo is placed on the load-bearing surface of the forks 101 to prevent the cargo from falling off the forks 101 due to uneven force. Since the fork body adopts an integral pressing process, it places high requirements on the processing equipment and has high processing costs. Therefore, the cargo forks 101 in this embodiment are welded from steel plates, which is simple to operate and saves costs. In order to facilitate the installation of the lifting assembly 300, the cargo forks 101 are made into a U shape when welding. The side of the cargo forks 101 away from the load-bearing surface is a mounting groove 102, and the lifting assembly 300 is installed in the mounting groove 102.

[0036] Considering the convenience of installing the whole device on the frame, please refer to Figure 3As shown, the bracket assembly 200 includes a base plate 201, a fixing frame 202 on one side of the base plate 201, and the fixing frame 202 is fixed to the vehicle frame by bolts to achieve the installation of the entire device and the vehicle frame; in order to prevent the cargo from tipping toward the fixing frame 202, a limit plate 203 is welded on the side of the base plate 201 away from the fixing frame 202, and the limit plate 203 prevents the cargo from squeezing the fixing frame 202;

[0037] See Figure 4 As shown, the connecting rod assembly 310 is further introduced:

[0038] The connecting rod assembly 310 includes a rotating arm assembly 311, a first connecting block 312, a connecting rod 313, a hexagonal square steel 314, and a second connecting block 315, which are connected in sequence. The rotating arm assembly 311 and the first connecting block 312 are rotationally connected, and the remaining parts are threaded. The same end of the rotating arm assembly 311 and the first connecting block 312 that are rotationally connected is also rotationally connected to the base plate 201.

[0039] Considering the complex process and high maintenance cost of the existing integral support arm structure, the arm assembly 311 has two arms. The first connecting block 312 is installed between the two arms and is rotatably connected to the arms. When one of the arms is damaged and there is no replacement, the other good arm can still be driven to drive the first connecting block 312 to rotate.

[0040] Since the fork 101 is welded and not very precise in size, the connecting rod assembly 310 needs to be fine-tuned. Therefore, the threads at both ends of the hexagonal square steel 314 rotate in opposite directions. The two ends of the hexagonal square steel 314 are respectively threadedly connected to the connecting rod 313 and the second connecting block 315. By rotating the hexagonal square steel 314 forward or backward, the overall length of the connecting rod assembly 310 can be fine-tuned.

[0041] Further introduction to the single wheel assembly 320:

[0042] The single wheel assembly 320 includes a load-bearing wheel 322, and wheel frames 321 are rotatably connected on both sides of the load-bearing wheel 322. The end of the wheel frame 321 away from the load-bearing wheel 322 is rotatably connected to the second connecting block 315, and the end on the same side where the wheel frame 321 is rotatably connected to the second connecting block 315 is rotatably connected to the fork 101. When the second connecting block 315 is pushed by force, the wheel frame 321 is driven to rotate, causing the load-bearing wheel 322 to rotate synchronously and contact the ground, and finally driving the fork body assembly 100 and the bracket assembly 200 to lift, thereby realizing the function of lifting cargo.

[0043] In summary, the working principle of this solution is as follows:

[0044] The fixing frame 202 is fixed to the vehicle frame by bolts, and the output end of the lifting cylinder on the vehicle frame is pressed against the rotating arm, and the lifting cylinder is started. The output end of the lifting cylinder extends to push the rotating arm, and the rotating arm rotates, thereby driving the first connecting block 312, the connecting rod 313, the hexagonal square steel 314 and the second connecting block 315 to move forward in sequence. When the second connecting block 315 is pushed by force, it drives the wheel frame 321 to rotate, so that the load-bearing wheel 322 rotates synchronously and contacts the ground, and finally drives the fork assembly 100 and the bracket assembly 200 to lift.

[0045] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0046] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent modifications made according to the scope of the claims of the present application are within the scope of protection of the claims of the present application.

Claims

1. A transport vehicle lifting structure, comprising a bracket assembly (200) and a fork assembly (100) with one end fixed to the bottom of the bracket assembly (200), characterized in that: Also included is a lifting assembly (300), The lifting assembly (300) is mounted on the bottom of the fork assembly (100) and includes a connecting rod assembly (310) and a single wheel assembly (320); one end of the connecting rod assembly (310) is rotatably connected to the single wheel assembly (320), and the other end of the connecting rod assembly (310) is rotatably connected to the bracket assembly (200); the end of the single wheel assembly (320) rotatably connected to the connecting rod assembly (310) is also rotatably connected to the fork assembly (100); The external force pushes the connecting rod assembly (310), driving the single wheel assembly (320) to rotate and contact the ground, so that the fork assembly (100) and the bracket assembly (200) are lifted synchronously.

2. The transport vehicle lifting structure according to claim 1, characterized in that: The fork assembly (100) includes at least two forks (101), the forks (101) are welded from steel plates, a mounting groove (102) is provided on the side of the forks (101) away from the bearing surface, and the lifting assembly (300) is installed in the mounting groove (102).

3. The transport vehicle lifting structure according to claim 1, characterized in that: The bracket assembly (200) comprises a bottom plate (201), and a fixing frame (202) and a limiting plate (203) are respectively provided on both sides of the bottom plate (201), wherein the fixing frame (202) is used to be fixed to the vehicle frame, and the limiting plate (203) is used to prevent the cargo from squeezing the fixing frame (202); a cargo fork (101) is welded to the bottom of the bottom plate (201).

4. The transport vehicle lifting structure according to claim 1, characterized in that: The connecting rod assembly (310) comprises a rotating arm group (311), a first connecting block (312), a connecting rod (313), a hexagonal square steel (314) and a second connecting block (315) connected in sequence, wherein the rotating arm group (311) and the first connecting block (312) are connected in a rotating manner, and the rest are connected in a threaded manner.

5. The transport vehicle lifting structure according to claim 4, characterized in that: The rotating arm group (311) has two rotating arms, and the first connecting block (312) is installed between the two rotating arms and is rotatably connected to the rotating arms.

6. The transport vehicle lifting structure according to claim 4, characterized in that: The same side end of the rotating arm assembly (311) that is rotatably connected to the first connecting block (312) is also rotatably connected to the bottom plate (201).

7. The transport vehicle lifting structure according to claim 4, characterized in that: The threads at both ends of the hexagonal square steel (314) rotate in opposite directions.

8. The transport vehicle lifting structure according to claim 1, characterized in that: The single wheel assembly (320) includes a load-bearing wheel (322), and wheel frames (321) are rotatably connected to both sides of the load-bearing wheel (322). One end of the wheel frame (321) away from the load-bearing wheel (322) is rotatably connected to a second connecting block (315), and the same end of the wheel frame (321) as the one rotatably connected to the second connecting block (315) is rotatably connected to a fork (101).

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