Crank arm structure for carrying vehicle

Abstract

The utility model discloses a crank arm structure for a carrier, which relates to the technical field of carrying equipment and comprises a crank arm body, angle iron, a first connecting block and a support arm, the bottom surface of the crank arm body is connected with the angle iron, one side of the crank arm body is provided with the first connecting block, and the other side of the crank arm body is provided with a second connecting block. When the crank arm structure is used, angle iron is welded to the turning position of the crank arm, the strength of the turning position of the crank arm structure is further improved, the bearing capacity of the crank arm is improved, the turning position of the crank arm structure is supported through the triangular angle iron, and the crank arm structure is convenient to use. And the bending probability of the crank arm is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transport equipment, in particular to a crank arm structure for a transport vehicle. Background Art

[0002] The articulated arm truck is a modern lifting and handling equipment, usually used to carry small goods, in which the articulated arm is one of the main supporting arms of the truck. After searching, the Chinese patent authorization number CN113148862A discloses a small truck with an articulated arm lifting device. Although the articulated arm truck is simple to operate, can be flexibly moved, and has its own lifting device, it solves the problem of small forklift handling capacity; simplifies the system, improves the reliability and maintainability of the system, but because the articulated arm is the main force-bearing component when the truck is working, when the truck is slightly overloaded, the main stress will be concentrated at the turning point of the articulated arm. When the force at the turning point of the articulated arm is too large, it will easily cause the articulated arm to deform and bend, thereby damaging the articulated arm. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a crank arm structure for a transport vehicle, which solves the problem raised in the background technology that since the crank arm is the main force-bearing component when the transport vehicle is working, when the transport vehicle is slightly overloaded, the main stress will be concentrated at the turning point of the crank arm. When the force at the turning point of the crank arm is too large, it will easily cause the crank arm to deform and bend, thereby damaging the crank arm.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a crank arm structure for a transport vehicle, comprising a crank arm body, an angle iron, a first connecting block and a support arm, the bottom surface of the crank arm body is connected to the angle iron, a first connecting block is arranged on one side of the crank arm body, and a second connecting block is arranged on the other side of the crank arm body, bolt holes are welded on the surfaces of the first connecting block and the second connecting block, and connecting bolts are arranged inside the bolt holes for connecting the first connecting block and the second connecting block.

[0005] Preferably, support arms are provided at the bottom of the first connecting block and the second connecting block, and the support arms form a triangular structure with the first connecting block and the second connecting block respectively. The triangular structure is conducive to dispersing the force at the turning point of the curved arm, avoiding deformation caused by excessive local force due to force concentration.

[0006] Preferably, the angle iron has a triangular structure, and the two side surfaces of the angle iron are tightly fitted with the first connecting block and the second connecting block. The angle iron is welded to the right-angle turning point at one end of the crank body. The triangular angle iron is helpful in supporting the turning point of the crank structure, thereby helping to reduce the probability of bending of the crank.

[0007] Preferably, positioning grooves are provided on the inner sides of the first connecting block and the second connecting block, and the positioning grooves are L-shaped structures, and the positioning grooves are consistent with the shape of the right-angle turning point of the crank arm body. The first connecting block and the second connecting block are installed on the outer side of the crank arm by adopting a snap-fitting manner and connecting bolts, which is beneficial to avoid drilling holes on the surface of the crank arm for installation.

[0008] Preferably, a hollow groove is provided on the surface of the first connecting block and the second connecting block, and the hollow groove is provided in an L shape, which is helpful to reduce the dead weight of the first connecting block and the second connecting block, and further helps to reduce the load of the crank arm.

[0009] The utility model provides a crank arm structure for a transport vehicle, which has the following beneficial effects:

[0010] (1) The articulated arm structure for a transport vehicle has angle irons welded at the turning point of the articulated arm when in use, thereby further improving the strength of the turning point of the articulated arm structure and improving the bearing capacity of the articulated arm. The triangular angle irons are helpful in supporting the turning point of the articulated arm structure, thereby helping to reduce the probability of bending of the articulated arm.

[0011] (2) The crank arm structure for a transport vehicle is provided with a first connecting block and a second connecting block on the outside of the crank arm. When the positioning grooves on the inner sides of the first connecting block and the second connecting block are engaged with the two sides of the crank arm, the turning point of the crank arm can be further supported, which is beneficial to reduce the probability of deformation at the turning point of the crank arm. At the same time, the support is provided by the support arms at the bottom of the first connecting block and the second connecting block, which is beneficial to further improve the bearing capacity of the crank arm. At the same time, the first connecting block and the second connecting block are installed on the outside of the crank arm by adopting an engaging manner and connecting bolts, which is beneficial to avoid drilling holes on the surface of the crank arm for installation, thereby helping to avoid damaging the original force-bearing structure of the crank arm.

[0012] This solves the problem that the crank arm is the main stress-bearing component when the transport vehicle is working. When the transport vehicle is slightly overloaded, the main stress will be concentrated at the turning point of the crank arm. When the force at the turning point of the crank arm is too large, it will easily cause the crank arm to deform and bend, thereby damaging the crank arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is an exploded view of the utility model;

[0015] Figure 3 This is a schematic diagram of the angle iron structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the limit groove structure of the utility model;

[0017] Figure 5 This is a schematic diagram of the connection between the first connecting block and the second connecting block of the utility model.

[0018] In the figure, 1, the crank arm body; 2, the angle iron; 3, the first connecting block; 4, the second connecting block; 5, the positioning groove; 6, the hollow groove; 7, the bolt hole; 8, the connecting bolt; 9, the support arm. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1:

[0021] See also Figure 1-5 A crank arm structure for a transport vehicle comprises a crank arm body 1, an angle iron 2, a first connecting block 3 and a support arm 9, the bottom surface of the crank arm body 1 is connected to the angle iron 2, a first connecting block 3 is arranged on one side of the crank arm body 1, and a second connecting block 4 is arranged on the other side of the crank arm body 1, bolt holes 7 are welded on the surfaces of the first connecting block 3 and the second connecting block 4, and connecting bolts 8 are arranged inside the bolt holes 7 for connecting the first connecting block 3 and the second connecting block 4, the angle iron 2 is a triangular structure, and the two side surfaces of the angle iron 2 are tightly fitted with the first connecting block 3 and the second connecting block 4, the angle iron 2 is welded to the right-angle turning point of one end of the crank arm body 1, and the crank arm structure is welded with the angle iron 2 at the turning point of the crank arm body 1 when in use, which is beneficial to further improve the strength of the turning point of the crank arm structure and improve the bearing capacity of the crank arm, and the triangular angle iron 2 is beneficial to support the turning point of the crank arm structure.

[0022] Embodiment 2:

[0023] A support arm 9 is provided at the bottom of the first connecting block 3 and the second connecting block 4, respectively forming a triangular structure with the support arm 9 and the first connecting block 3 and the second connecting block 4. A positioning groove 5 is provided on the inner side of the first connecting block 3 and the second connecting block 4. The positioning groove 5 is an L-shaped structure, and the positioning groove 5 is consistent with the shape of the right-angle turning point of the crank arm body 1. By providing the first connecting block 3 and the second connecting block 4 on the outside of the crank arm, when the positioning grooves 5 on the inner sides of the first connecting block 3 and the second connecting block 4 are engaged with the two sides of the crank arm, the turning point of the crank arm can be further supported, which is beneficial to reduce the probability of deformation at the turning point of the crank arm. At the same time, support is provided by the support arm 9 at the bottom of the first connecting block 3 and the second connecting block 4, which is beneficial to further improve the bearing capacity of the crank arm.

[0024] Working principle: When the crank arm structure is in use, an angle iron 2 is welded at the turning point of the crank arm body 1, which helps to further improve the strength of the turning point of the crank arm structure and improve the bearing capacity of the crank arm. The triangular angle iron 2 is helpful to support the turning point of the crank arm structure, which helps to reduce the probability of bending of the crank arm. A first connecting block 3 and a second connecting block 4 are provided on the outside of the crank arm. When the positioning grooves 5 on the inner sides of the first connecting block 3 and the second connecting block 4 are engaged with the two sides of the crank arm, the turning point of the crank arm can be further supported, which helps to reduce the probability of deformation at the turning point of the crank arm. At the same time, support is provided by the support arms 9 at the bottom of the first connecting block 3 and the second connecting block 4, which helps to further improve the bearing capacity of the crank arm. At the same time, the first connecting block 3 and the second connecting block 4 are installed on the outside of the crank arm by adopting a snap-fitting method and connected by connecting bolts 8, which helps to avoid drilling holes on the surface of the crank arm for installation, thereby helping to avoid damaging the original force-bearing structure of the crank arm.

[0025] The components of the utility model, 1. crank arm body; 2. angle iron; 3. first connecting block; 4. second connecting block; 5. positioning groove; 6. hollow groove; 7. bolt hole; 8. connecting bolt; 9. supporting arm, are all common standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0026] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A crank arm structure for a transport vehicle, characterized in that: The invention comprises a crank arm body (1), an angle iron (2), a first connecting block (3) and a supporting arm (9); the bottom surface of the crank arm body (1) is connected to the angle iron (2); one side of the crank arm body (1) is provided with the first connecting block (3); the other side of the crank arm body (1) is provided with a second connecting block (4); bolt holes (7) are welded on the surfaces of the first connecting block (3) and the second connecting block (4); and connecting bolts (8) are provided inside the bolt holes (7) for connecting the first connecting block (3) and the second connecting block (4).

2. The crank arm structure for a transport vehicle according to claim 1, characterized in that: Support arms (9) are provided at the bottom of the first connecting block (3) and the second connecting block (4), and the support arms (9) respectively form a triangular structure with the first connecting block (3) and the second connecting block (4).

3. The crank arm structure for a transport vehicle according to claim 1, characterized in that: The angle iron (2) is in a triangular structure, and the surfaces on both sides of the angle iron (2) are tightly fitted with the first connecting block (3) and the second connecting block (4). The angle iron (2) is welded to a right-angle turning point at one end of the crank arm body (1).

4. The crank arm structure for a transport vehicle according to claim 1, characterized in that: Positioning grooves (5) are provided inside the first connecting block (3) and the second connecting block (4); the positioning grooves (5) are L-shaped structures, and the positioning grooves (5) match the shape of the right-angle turning point of the crank body (1).

5. The crank arm structure for a transport vehicle according to claim 1, characterized in that: The surfaces of the first connecting block (3) and the second connecting block (4) are provided with hollow grooves (6), and the hollow grooves (6) are provided in an L shape.

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