Hollow weight reducing structure of connecting rod mechanism for wheel loader

Abstract

The utility model relates to the field of loaders, and discloses a link mechanism hollow weight reduction structure for a wheel loader, which comprises a movable arm structure and a rocker arm structure, the movable arm structure comprises a movable arm cross beam and two movable arm plates, and the two movable arm plates are respectively arranged at the center of the front end face and the center of the rear end face of the movable arm cross beam. According to the swing arm, the swing arm plate and the swing arm cross beam are flush with the outer side of the swing arm plate after the swing arm cross beam extends out and are subjected to groove welding, so that the swing arm cross beam and the swing arm plate form a firm whole, the strength of the swing arm is improved, and a powerful guarantee is provided for stable work of the swing arm; the weight of the rocker arm is reduced, the third lightening hole and the fourth damping hole are formed in the rocker arm, the weight of the rocker arm is reduced according to the stress characteristics and function requirements of the rocker arm in the working process of the loading machine, and the stress characteristics and function requirements of the rocker arm in the working process of the loading machine are fully considered.

Description

Technical Field

[0001] The utility model relates to the field of loaders, in particular to a hollow weight-reducing structure of a connecting rod mechanism for a wheel loader. Background Art

[0002] Wheel loaders are primarily used for material loading and transporting. The connecting rod mechanism transmits cylinder force to enable the bucket to complete movement, and is a key load-bearing component during the excavation process. Force analysis of the connecting rod mechanism reveals that existing designs still have redundant strength, resulting in a heavy and high-cost connecting rod mechanism, which affects the rated load and operational flexibility of the entire machine.

[0003] In the existing strength design of the connecting rod mechanism, the analogy method, virtual analysis method and other means are mainly used. The original mature products and analysis data are combined to adjust the appearance of the connecting rod mechanism. Affected by the cross-section of the boom beam, the connection area between the boom and the boom beam is large, and the front and rear hinges are affected by the intermediate size. For the beauty of the product, arcs are often used for transition, resulting in excessive design strength redundancy. The rocker arm part is mainly used for the transmission of rotational force and is less affected by torque. At present, there is also design strength redundancy. Therefore, those skilled in the art provide a hollow weight-reducing structure of a connecting rod mechanism for a wheel loader to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the present utility model is to solve the shortcomings existing in the prior art, and a hollow weight-reducing structure of a connecting rod mechanism for a wheel loader is proposed. The boom plate and the boom cross beam are connected by extending the boom cross beam and then flush with the outer side of the boom plate and performing groove welding, so that the boom cross beam and the boom plate become a solid whole, which greatly improves the strength of the boom and provides a strong guarantee for the stable operation of the boom. By opening a third weight-reducing hole and a fourth shock-absorbing hole on the rocker arm, not only the weight of the rocker arm is reduced, but also the force characteristics and functional requirements of the rocker arm during the operation of the loader are fully taken into consideration. After the loader connecting rod mechanism is hollowed out and reduced in weight, the weight can be reduced by about 10%, while meeting the structural strength required for normal operation. Not only the rated load of the loader is improved, but also the flexibility of the movement is improved, making the loader more efficient and flexible at work and adaptable to different work scenarios and task requirements.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a hollow weight-reducing structure of a connecting rod mechanism for a wheel loader, comprising a boom structure and a rocker arm structure, wherein the boom structure comprises a boom crossbeam and two boom plates, wherein the two boom plates are respectively arranged at the center of the front end face and the center of the rear end face of the boom crossbeam;

[0006] The rocker arm structure includes two rocker arm plates, two rocker arm reinforcement plates, two third weight-reducing holes and two fourth shock-absorbing holes. The two rocker arm plates are arranged in a front-to-back arrangement. The two rocker arm reinforcement plates are respectively arranged at the upper sides of the rear end surfaces of the front rocker arm plates. The two third weight-reducing holes are respectively arranged at one side of the center of the front end surfaces of the two rocker arm plates. The two fourth shock-absorbing holes are respectively arranged at the other side of the center of the front end surfaces of the two rocker arm plates.

[0007] Through the above technical solution, the boom plate and the boom cross beam are extended and flush with the outer side of the boom plate and groove welded, so that the boom cross beam and the boom plate become a solid whole, which greatly improves the strength of the boom and provides a strong guarantee for the stable operation of the boom. By opening the third weight-reducing hole and the fourth shock-absorbing hole on the rocker arm, not only the weight of the rocker arm is reduced, but also the force characteristics and functional requirements of the rocker arm during the operation of the loader are fully considered. After hollowing out and reducing the weight of the loader connecting rod mechanism, the weight can be reduced by about 10%, while meeting the structural strength required for normal operation. Not only the rated load of the loader is improved, but also the flexibility of the movement is improved, making the loader more efficient and flexible at work and adapting to different work scenarios and task requirements.

[0008] Furthermore, a middle weight-reducing hole is provided at the center of the front end face of the boom cross beam, a first weight-reducing hole is provided at one side of the center of the front end faces of the two boom plates, a second weight-reducing hole is provided at the other side of the center of the front end faces of the two boom plates, hinge holes for connecting the boom and the vehicle frame are provided at both sides of the center of the front end face of the rear boom plate, hinge holes for connecting the boom and the bucket are provided at both sides of the center of the front end face of the front boom plate, and hinge holes for connecting the boom and the lifting cylinder are provided at the lower center of the front end faces of the two boom plates;

[0009] Through the above technical solution, the weight of the boom crossbeam is reduced while ensuring the structural strength, and the weight of the boom is reduced without affecting the main functions of the boom plate. The hinge hole between the boom and the frame is used to connect the boom and the frame, so that the boom can swing up and down around the hinge point. The hinge hole between the boom and the bucket is used to connect the boom and the bucket to realize the lifting action of the bucket. The hinge hole between the boom and the lifting cylinder is used to connect the boom and the lifting cylinder, and the lifting of the boom is controlled by the extension and retraction of the lifting cylinder.

[0010] Furthermore, a rocker arm and a crossbeam hinge hole is provided at the center of the rear end face of the rocker plate and the center of the front end face of the rear rocker plate, a rocker arm and a pull rod hinge hole is provided at one side of the center of the front end face of the two rocker plates, and a rocker arm and a bucket cylinder hinge hole is provided at the other side of the center of the front end face of the two rocker plates;

[0011] Through the above technical solution, the hinge hole between the rocker arm and the crossbeam is used to connect the rocker arm and the boom crossbeam, so that the rocker arm can swing around the hinge point; the hinge hole between the rocker arm and the pull rod is used to connect the rocker arm and the pull rod, and the flipping of the bucket is controlled by the action of the pull rod; the hinge hole between the rocker arm and the bucket cylinder is used to connect the rocker arm and the bucket cylinder, and the swing of the rocker arm is controlled by the extension and retraction of the bucket cylinder, thereby realizing the flipping action of the bucket.

[0012] Furthermore, the two second weight-reducing holes are located at a position halfway between the two boom and bucket hinge holes and the two boom and lift cylinder hinge holes, the width of the two second weight-reducing holes is one-quarter of the width of the two boom plates here, and the length is one-third of the width of the two boom and bucket hinge holes to the two boom and lift cylinder hinge holes, the center lines of the two second weight-reducing holes are parallel to the line connecting the two boom and frame hinge holes to the arm and the two boom and bucket hinge holes and are at a position halfway between the two boom plates here;

[0013] Through the above technical solution, in combination with the first weight-reducing hole, the weight of the boom is further reduced, and the energy efficiency of the loader is improved.

[0014] Furthermore, the two third weight-reducing holes are located at a position halfway between the hinge holes of the two rocker arms and the crossbeam and the hinge holes of the two rocker arms and the pull rods, the width of the two third weight-reducing holes is one-quarter of the width of the two rocker arms at this location, and the length is one-third of the distance between the hinge holes of the two rocker arms and the crossbeam and the two rocker arms. The center lines of the two third weight-reducing holes coincide with the lines connecting the hinge holes of the two rocker arms and the crossbeam and the two rocker arms.

[0015] Through the above technical solution, the overall weight of the rocker arm is reduced and the energy consumption of the loader is reduced.

[0016] Furthermore, the two fourth shock-absorbing holes are located at a position halfway between the two rocker arms and the crossbeam hinge holes and the two rocker arms and the bucket cylinder hinge holes. The width of the two fourth shock-absorbing holes is one-quarter of the width of the two rocker arm plates at this location, and the length is one-third of the distance between the two rocker arm plates and the two rocker arms and the bucket cylinder hinge holes. The center lines of the two fourth shock-absorbing holes coincide with the line connecting the two rocker arms and the crossbeam hinge holes to the two rocker arms and the bucket cylinder hinge holes.

[0017] Through the above technical solution, during the operation of the loader, the fourth shock-absorbing hole can play a certain shock-absorbing role and reduce the vibration of the rocker arm.

[0018] Furthermore, a rocker arm reinforcement plate is provided between the two third weight-reducing holes and the two fourth shock-absorbing holes;

[0019] The above technical solution prevents the rocker arm from being deformed when subjected to torque, thereby improving the load-bearing capacity of the rocker arm.

[0020] Furthermore, the boom crossbeam channel steel is provided with a groove for fixed connection with the outer sides of the two boom plates;

[0021] Through the above technical solution, the fixed connection makes the connection between the boom cross beam and the boom plate more secure and can withstand a greater load.

[0022] Furthermore, the two first weight-reducing holes are located at two-thirds of the distance between the two boom and frame hinge holes and the two boom and lifting cylinder hinge holes. The width of the two first weight-reducing holes is one-quarter of the width of the two boom plates at this location, and the length is one-fifth of the distance between the two boom and frame hinge holes and the two boom and lifting cylinder hinge holes. The center lines of the two first weight-reducing holes are parallel to the upper sides of the two boom plates and are located at one-half of the distance between the two boom plates.

[0023] Through the above technical solution, the weight of the boom is reduced by providing the first weight-reducing hole without affecting the structural strength of the boom.

[0024] The utility model has the following beneficial effects:

[0025] 1. In the utility model, the hollow weight-reducing structure of the connecting rod mechanism for the wheel loader is achieved by extending the boom plate and the boom cross beam, and then the boom cross beam is flush with the outer side of the boom plate and is welded at a groove, so that the boom cross beam and the boom plate become a solid whole, which greatly improves the strength of the boom and provides a strong guarantee for the stable operation of the boom.

[0026] 2. In the present invention, by opening the third weight-reducing hole and the fourth shock-absorbing hole on the rocker arm, not only the weight of the rocker arm is reduced, but also the force characteristics and functional requirements of the rocker arm during operation of the loader are fully considered.

[0027] 3. In the present invention, by hollowing out and reducing the weight of the loader's connecting rod mechanism, the weight can be reduced by about 10%, while meeting the structural strength required for normal operation. This not only improves the rated load of the loader, but also improves the flexibility of the movement, making the loader more efficient and flexible at work and adaptable to different work scenarios and task requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a three-dimensional diagram of a hollowed-out weight-reducing structure of a link mechanism for a wheel loader proposed in the present invention;

[0029] Figure 2 This is a three-dimensional diagram of a hollowed-out weight-reducing rocker arm structure of a connecting rod mechanism for a wheel loader proposed in the present invention;

[0030] Figure 3 for Figure 1 A magnified schematic diagram of point A in the middle;

[0031] Figure 4 for Figure 2 Enlarged schematic diagram of point B in the middle.

[0032] Legend:

[0033] 1. Boom structure; 101. Boom crossbeam; 102. Boom plate; 103. Boom and frame hinge hole; 104. Boom and lifting cylinder hinge hole; 105. Boom and bucket hinge hole; 106. Middle weight-reducing hole; 107. First weight-reducing hole; 108. Second weight-reducing hole; 2. Rocker arm structure; 201. Rocker arm plate; 202. Rocker arm and crossbeam hinge hole; 203. Rocker arm and pull rod hinge hole; 204. Rocker arm and bucket cylinder hinge hole; 205. Rocker arm reinforcement plate; 206. Third weight-reducing hole; 207. Fourth shock-absorbing hole. DETAILED DESCRIPTION

[0034] 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.

[0035] Reference Figure 1-4 The utility model provides an embodiment: a hollow weight-reducing structure of a connecting rod mechanism for a wheel loader, comprising a boom structure 1 and a rocker arm structure 2, characterized in that the boom structure 1 comprises a boom cross beam 101 and two boom plates 102, the two boom plates 102 being respectively arranged at the center of the front end face and the center of the rear end face of the boom cross beam 101, the boom cross beam 101 and the two boom plates 102 forming the main frame of the boom, which is connected to the vehicle frame through the boom-to-frame hinge hole 103 to achieve support and rotation of the boom, the boom-to-lift cylinder hinge hole 104 is connected to the lifting cylinder to provide power for the lifting of the boom, the boom-to-bucket hinge hole 105 is connected to the bucket to control the movement of the bucket, the middle weight-reducing hole 106, the first weight-reducing hole 107 and the second weight-reducing hole 108 reduce the weight of the boom without affecting the strength of the boom structure 1, thereby reducing the overall energy consumption of the loader.

[0036] The rocker structure 2 includes two rocker plates 201, two rocker reinforcement plates 205, two third weight-reducing holes 206, and two fourth shock-absorbing holes 207. The two rocker plates 201 are arranged in a front-to-back arrangement. The two rocker reinforcement plates 205 are respectively arranged at the upper sides of the rear end surfaces of the front rocker plates 201. The two third weight-reducing holes 206 are respectively arranged at one side of the center of the front end surfaces of the two rocker plates 201. The two fourth shock-absorbing holes 207 are respectively arranged at the other side of the center of the front end surfaces of the two rocker plates 201. The two rocker plates 201 are connected to the crossbeam of the loader through the rocker and crossbeam hinge holes 202 to achieve the support and rotation of the rocker arm. The rocker and pull rod hinge holes 203 are connected to the pull rod, and the rocker and bucket cylinder hinge holes 204 are connected to the bucket cylinder to jointly control the flipping action of the bucket. The third weight-reducing hole 206 and the fourth shock-absorbing hole 207 reduce the weight of the rocker arm while ensuring the structural strength 2 of the rocker arm. The rocker reinforcement plate 205 is used to enhance the strength of the rocker arm structure 2 to prevent the rocker arm from deforming when subjected to torque.

[0037] A middle weight-reducing hole 106 is provided at the center of the front end face of the boom cross beam 101, which reduces the weight of the boom cross beam 101 while ensuring the structural strength. A first weight-reducing hole 107 is provided at one side of the center of the front end face of the two boom plates 102, and a second weight-reducing hole 108 is provided at the other side of the center of the front end face of the two boom plates 102, which reduces the weight of the boom without affecting the main function of the boom plate 102. A boom and frame hinge hole 103 is provided at both sides of the center of the front end face of the rear boom plate 102, and a boom at the front is provided at the center of the front end face of the front boom plate 102. Boom and bucket hinge holes 105 are provided on both sides of the center of the front end surface of the plate 102, and the boom and frame hinge holes 103 are used to connect the boom and the frame so that the boom can swing up and down around the hinge point. The boom and bucket hinge holes 105 are used to connect the boom and the bucket to realize the lifting and lowering action of the bucket. Boom and lifting cylinder hinge holes 104 are provided at the lower center of the front end surfaces of the two boom plates 102. The boom and lifting cylinder hinge holes 104 are used to connect the boom and the lifting cylinder, and the lifting and lowering of the boom is controlled by the extension and retraction of the lifting cylinder.

[0038] A rocker arm and crossbeam hinge hole 202 is provided at the center of the rear end face of the rocker arm plate 201 and the center of the front end face of the rear rocker arm plate 201. The rocker arm and crossbeam hinge hole 202 is used to connect the rocker arm and the boom crossbeam 101, so that the rocker arm can swing around the hinge point. A rocker arm and pull rod hinge hole 203 is provided at one side of the center of the front end face of the two rocker arm plates 201. The rocker arm and pull rod hinge hole 203 is used to connect the rocker arm and the pull rod, and the flipping of the bucket is controlled by the action of the pull rod. A rocker arm and bucket cylinder hinge hole 204 is provided at the other side of the center of the front end face of the two rocker arm plates 201. The rocker arm and bucket cylinder hinge hole 204 is used to connect the rocker arm and the bucket cylinder, and the swing of the rocker arm is controlled by the extension and retraction of the bucket cylinder, thereby realizing the flipping action of the bucket.

[0039] The two second weight-reducing holes 108 are located at the halfway point between the two boom and bucket hinge holes 105 and the two boom and lifting cylinder hinge holes 104. The width of the two second weight-reducing holes 108 is one-fourth of the width of the two boom plates 102 at this point, and the length is one-third of the width of the two boom and bucket hinge holes 105 to the two boom and lifting cylinder hinge holes 104. The center lines of the two second weight-reducing holes 108 are parallel to the line connecting the two boom and frame hinge holes 103 to the arm and the two boom and bucket hinge holes 105 and are at the halfway point between the two boom plates 102 at this point, cooperating with the first weight-reducing holes 107, further reducing the weight of the boom and improving the energy efficiency of the loader. The boom crossbeam 101 channel steel has a groove and is fixedly connected to the outer sides of the two boom plates 102, so that the boom crossbeam 10 1 is integrated with the two boom plates 102. Welding makes the connection between the boom cross beam 101 and the boom plate 102 more secure and capable of withstanding a greater load. The two first weight-reducing holes 107 are located at two-thirds of the distance from the two boom-frame hinge holes 103 to the two boom-lift cylinder hinge holes 104. The width of the two first weight-reducing holes 107 is one-quarter of the width of the two boom plates 102 at this point, and the length is one-fifth of the distance from the two boom-frame hinge holes 103 to the two boom-lift cylinder hinge holes 104. The center lines of the two first weight-reducing holes 107 are parallel to the upper sides of the two boom plates 102 and are at the half position of the two boom plates 102 at this point. Under the premise of not affecting the strength of the boom structure 1, the weight of the boom is reduced by providing the first weight-reducing holes 107.

[0040] The two third weight-reducing holes 206 are located at the halfway point between the two rocker arms and crossbeam hinge holes 202 and the two rocker arms and pull rod hinge holes 203. The width of the two third weight-reducing holes 206 is one-fourth of the width of the two rocker arms 201, and the length is one-third of the distance between the two rocker arms and crossbeam hinge holes 202 and the two rocker arms 201. The center lines of the two third weight-reducing holes 206 coincide with the lines connecting the two rocker arms and crossbeam hinge holes 202 and the two rocker arms 201, thereby reducing the overall weight of the rocker arms and the energy consumption of the loader. The two fourth shock-absorbing holes 207 are located at the halfway point between the two rocker arms and crossbeam hinge holes 202 and the two rocker arms and bucket cylinder hinge holes 204. The width is one-fourth of the width of the two rocker plates 201, and the length is one-third of the distance from the two rocker plates 201 to the two rocker arms and the bucket cylinder hinge hole 204. The center lines of the two fourth shock-absorbing holes 207 coincide with the lines connecting the two rocker arms and the crossbeam hinge holes 202 to the two rocker arms and the bucket cylinder hinge holes 204. During the operation of the loader, the fourth shock-absorbing holes 207 can play a certain shock-absorbing role and reduce the vibration of the rocker arms. A rocker reinforcement plate 205 is set between the two third weight-reducing holes 206 and the two fourth shock-absorbing holes 207 to strengthen the strength of the rocker arm structure 2, to avoid deformation of the rocker arm due to torque, and to avoid deformation of the rocker arm when subjected to torque, thereby improving the bearing capacity of the rocker arm.

[0041] Working principle: The boom cross beam 101 and the two boom plates 102 form the main frame of the boom, which is connected to the frame through the boom-frame hinge hole 103 to achieve support and rotation of the boom. The boom-lift cylinder hinge hole 104 is connected to the lift cylinder to provide power for the lifting of the boom. The boom-bucket hinge hole 105 is connected to the bucket to control the movement of the bucket. The middle weight-reducing hole 106, the first weight-reducing hole 107 and the second weight-reducing hole 108 reduce the weight of the boom without affecting the strength of the boom structure 1, thereby reducing the overall energy consumption of the loader.

[0042] The two rocker plates 201 are connected to the crossbeam of the loader through the rocker and crossbeam hinge holes 202 to achieve the support and rotation of the rocker arm. The rocker and pull rod hinge holes 203 are connected to the pull rod, and the rocker and bucket cylinder hinge holes 204 are connected to the bucket cylinder to jointly control the flipping action of the bucket. The third weight-reducing hole 206 and the fourth shock-absorbing hole 207 reduce the weight of the rocker arm while ensuring the structural strength 2 of the rocker arm. The rocker reinforcement plate 205 is used to enhance the strength of the rocker arm structure 2 to prevent the rocker arm from deforming when subjected to torque.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hollow weight-reducing structure of a connecting rod mechanism for a wheel loader, comprising a movable arm structure (1) and a rocker arm structure (2), characterized in that: The boom structure (1) comprises a boom crossbeam (101) and two boom plates (102), wherein the two boom plates (102) are respectively arranged at the center of the front end face and the center of the rear end face of the boom crossbeam (101); The rocker arm structure (2) comprises two rocker arm plates (201), two rocker arm reinforcement plates (205), two third weight-reducing holes (206) and two fourth shock-absorbing holes (207), wherein the two rocker arm plates (201) are arranged in a front-to-back arrangement, the two rocker arm reinforcement plates (205) are respectively arranged at the upper sides of the rear end surfaces of the front rocker arm plates (201), the two third weight-reducing holes (206) are respectively arranged at one side of the center of the front end surfaces of the two rocker arm plates (201), and the two fourth shock-absorbing holes (207) are respectively arranged at the other side of the center of the front end surfaces of the two rocker arm plates (201).

2. The hollow weight-reducing structure of a connecting rod mechanism for a wheel loader according to claim 1, characterized in that: A middle weight-reducing hole (106) is provided at the center of the front end face of the boom cross beam (101), a first weight-reducing hole (107) is provided at one side of the center of the front end face of the two boom plates (102), a second weight-reducing hole (108) is provided at the other side of the center of the front end face of the two boom plates (102), a boom and frame hinge hole (103) is provided at both sides of the center of the front end face of the rear boom plate (102), a boom and bucket hinge hole (105) is provided at both sides of the center of the front end face of the front boom plate (102), and a boom and lifting cylinder hinge hole (104) is provided at the lower center of the front end face of the two boom plates (102).

3. The hollow weight-reducing structure of the connecting rod mechanism for a wheel loader according to claim 1, characterized in that: A rocker arm and crossbeam hinge hole (202) is provided at the center of the rear end face of the rocker arm plate (201) and the center of the front end face of the rear rocker arm plate (201), a rocker arm and pull rod hinge hole (203) is provided at one side of the center of the front end face of the two rocker arm plates (201), and a rocker arm and bucket cylinder hinge hole (204) is provided at the other side of the center of the front end face of the two rocker arm plates (201).

4. The hollow weight-reducing structure of a connecting rod mechanism for a wheel loader according to claim 2, characterized in that: The two second weight-reducing holes (108) are located at a half position from the two boom and bucket hinge holes (105) to the two boom and lifting cylinder hinge holes (104); the width of the two second weight-reducing holes (108) is one-fourth of the width of the two boom plates (102) at this location; the length is one-third of the distance from the two boom and bucket hinge holes (105) to the two boom and lifting cylinder hinge holes (104); the center lines of the two second weight-reducing holes (108) are parallel to the line connecting the two boom and frame hinge holes (103) to the arm and the two boom and bucket hinge holes (105) and are at a half position of the two boom plates (102) at this location.

5. The hollow weight-reducing structure of the connecting rod mechanism for a wheel loader according to claim 1, characterized in that: The two third weight-reducing holes (206) are located at a position halfway between the two rocker arms and crossbeam hinge holes (202) and the two rocker arms and pull rod hinge holes (203); the width of the two third weight-reducing holes (206) is one-fourth of the width of the two rocker arms (201) at this location; the length is one-third of the distance between the two rocker arms and crossbeam hinge holes (202) and the two rocker arms (201); the center lines of the two third weight-reducing holes (206) coincide with the line connecting the two rocker arms and crossbeam hinge holes (202) and the two rocker arms (201).

6. The hollow weight-reducing structure of the connecting rod mechanism for a wheel loader according to claim 1, characterized in that: The two fourth damping holes (207) are located at a position halfway between the two rocker arms and the crossbeam hinge holes (202) and the two rocker arms and the bucket cylinder hinge holes (204). The width of the two fourth damping holes (207) is one-fourth of the width of the two rocker plates (201) at this location, and the length is one-third of the distance between the two rocker plates (201) and the two rocker arms and the bucket cylinder hinge holes (204). The center lines of the two fourth damping holes (207) coincide with the line connecting the two rocker arms and the crossbeam hinge holes (202) and the two rocker arms and the bucket cylinder hinge holes (204).

7. The hollow weight-reducing structure of a connecting rod mechanism for a wheel loader according to claim 1, characterized in that: A rocker arm reinforcement plate (205) is provided between the two third weight-reducing holes (206) and the two fourth shock-absorbing holes (207).

8. The hollow weight-reducing structure of a connecting rod mechanism for a wheel loader according to claim 1, characterized in that: The boom cross beam (101) channel steel has a groove and is fixedly connected to the outer sides of the two boom plates (102).

9. The hollow weight-reducing structure of a connecting rod mechanism for a wheel loader according to claim 2, characterized in that: The two first weight-reducing holes (107) are located at two-thirds of the distance between the two boom and frame hinge holes (103) and the two boom and lifting cylinder hinge holes (104). The width of the two first weight-reducing holes (107) is one-quarter of the width of the two boom plates (102) at this location, and the length is one-fifth of the distance between the two boom and frame hinge holes (103) and the two boom and lifting cylinder hinge holes (104). The center lines of the two first weight-reducing holes (107) are parallel to the upper sides of the two boom plates (102) and are located at one-half of the distance between the two boom plates (102).

Images