Mining dump truck rear suspension bridge end push-pull rod connecting support

Abstract

The utility model discloses a mining dump truck rear suspension bridge end push-pull rod connecting support, which is fixed on an axle housing through bolts and comprises a base and four hinge lugs arranged on the base, every two of the four hinge lugs form a group and are symmetrically arranged, each group of hinge lugs is hinged with a suspension bridge end push-pull rod through a pin shaft, and the hinge lugs are hinged with the suspension bridge end push-pull rod through a pin shaft. The base and the hinge lugs are of an integrated structure. The connecting support adopts a symmetrical structural design, so that the connecting support can be simultaneously mounted on the middle axle and the rear axle, the applicability is improved, and meanwhile, the safety risk caused by the failure of the bolt connection of the push-pull rod is avoided.

Description

Technical Field

[0001] The utility model relates to a connecting support, in particular to a connecting support for a push-pull rod at the end of a rear suspension bridge of a mining dump truck. Background Art

[0002] In the guiding rod system layout scheme of the rear leaf spring balance suspension of mining vehicles, the connecting supports arranged in a V shape at the bridge end mostly adopt the form of bolt connection, resulting in easy stress concentration at the bolt connection surface during transition, which may lead to fracture failure; and since bolts need to pass through corresponding mounting holes during installation, it is necessary to install and tighten the bolts at specific positions; and the bolts connecting the support and the axle housing need to be regularly inspected and retightened during use. Therefore, there is an urgent need for a connecting support for the push-pull rod at the end of the suspension bridge to solve the above problems. Content of the Utility Model

[0003] Aiming at the problems existing in the above-mentioned prior art, the utility model provides a connecting support for a push-pull rod at the end of a rear suspension bridge of a mining dump truck. This bridge end support uses a pin to connect the push-pull rod, and more design considerations are made to avoid the safety risks caused by the failure of the bolt connection of the push-pull rod.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is: a connecting support for a push-pull rod at the end of a rear suspension bridge of a mining dump truck, which is fixed on the axle housing through bolts. The connecting support includes: a base and four hinge ears arranged on the base. Two of the four hinge ears are in a group and are symmetrically arranged. Each group of hinge ears is hinged to a push-pull rod at the end of the suspension bridge through a pin. The base and the hinge ears are of an integral structure.

[0005] Further, the two hinge ears in each group are symmetrically arranged.

[0006] Further, the hinge ears are inclined.

[0007] Further, the base is an isosceles trapezoid, and only one hinge ear in each group is arranged on the hypotenuse of the isosceles trapezoid.

[0008] Further, a raised lifting surface is provided at the center of the base. The raised lifting surface is arranged between the hinge ears, and both ends of the raised lifting surface are connected to the side surfaces of the hinge ears.

[0009] Further, connection holes for installing bolts are provided on both sides of the lifting surface of the base.

[0010] Further, a pin hole is also provided below the base. The pin hole is provided directly below the lifting surface between each group of hinge ears and is located directly below the orthographic projection of the hinge point of the push-pull rod at the end of the suspension bridge, and is connected to the axle housing through a pin.

[0011] Further, a concave groove is also provided below the base.

[0012] The beneficial effects of the present utility model are as follows: According to the shape of its base, an asymmetric connection hole arrangement is adopted, so that all the bolts on the weak side are located outside the projected area of the push-pull rod, which is convenient for fastening. At the same time, two are left outside the projected area of the push-pull rod on the strong side, which is convenient for fastening and regularly checking whether the bolts are loose. The connecting support is designed with a symmetric structure, so that it can be installed on the middle bridge and the rear bridge at the same time, improving the applicability. At the same time, the safety risk caused by the failure of the bolt connection of the push-pull rod is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the structural schematic diagram of the present utility model Figure 1 ;

[0014] Figure 2 is the structural schematic diagram of the present utility model Figure 2 ;

[0015] Figure 3 is the structural schematic diagram of the use of the present utility model Figure 1 ;

[0016] Figure 4 is the structural schematic diagram of the use of the present utility model Figure 2 ;

[0017] Figure 5 is the partial sectional structural schematic diagram of the present utility model;

[0018] In the figure: 1, base; 2, hinge ear; 3, fixed pin shaft; 4, suspension bridge end push-pull rod; 5, lifting surface; 6, pin shaft hole; 7, groove; 8, connection hole; 9, connection pin shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below through the drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the scope of the present utility model.

[0020] Unless otherwise defined, all technical terms and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0021] Such as Figure 1As shown in the figure, a connecting support for the push-pull rod at the end of the rear suspension of a mining dump truck is fixed to the axle housing by bolts. The connecting support includes: a base 1 and four hinge ears 2 provided on the base 1. The four hinge ears 2 are divided into two groups, and are symmetrically arranged. Each group of hinge ears 2 is hinged to a push-pull rod 4 at the end of the suspension bridge through a fixed pin 3. The base 1 and the hinge ears 2 are of an integral structure. When the push-pull rod 4 at the end of the suspension bridge is hinged through the fixed pin 3, its position is centered with respect to the connecting support, so that the rod length can be increased to improve the suspension movement characteristics.

[0022] As Figures 3-4 shown, the fixed pin 3 used for the hinge connection between the push-pull rod 4 at the end of the suspension bridge and the connecting ear adopts a double-pin fixing method to improve safety.

[0023] As Figures 1-3 shown, the two hinge ears 2 in each group are symmetrically arranged to ensure its stability and the hinge strength of the push-pull rod 4 at the end of the suspension bridge.

[0024] As Figures 1-5 shown, the hinge ears 2 are inclined.

[0025] The connecting ear is provided with a mounting hole for mounting the fixed pin 3.

[0026] As Figures 1-3 shown, the base 1 is an isosceles trapezoid, and there is only one hinge ear 2 in each group arranged on the hypotenuse of the isosceles trapezoid.

[0027] As Figures 1-3 As shown in FIGS. 4 and 5, due to the difference in the force transmission of the two-side pull rods, the connecting support bends in the top view direction and has a rotation tendency at the same time. Therefore, the connecting support adopts the method of raising the cross-section, that is, a raised lifting surface 5 is provided at the center of the base 1. The raised lifting surface 5 is arranged between the hinge ears 2 and the hinge ears 2. Both ends of the raised lifting surface 5 are connected to the side surfaces of the hinge ears 2, further improving the stiffness of the connecting support and being beneficial to the service life of the connected bolts.

[0028] As Figures 1-5 shown, connecting holes 8 for installing bolts are provided on both sides of the lifting surface 5 of the base 1.

[0029] On the base 1 between the two connecting ears in the same group, two connecting holes 8 are provided on each side of the lifting surface 5. The base 1 between the two groups of connecting ears is an isosceles trapezoid, and one connecting hole 8 is provided on one side of its lifting surface 5 and two connecting holes 8 on the other side.

[0030] As Figure 2As shown in the figure, a pin shaft hole 6 is further provided below the base 1. The pin shaft hole 6 is directly below the lifting surface 5 between each group of hinge ears 2 and is located below the orthographic projection of the hinge point of the suspension bridge end push rod 4. It is connected to the axle housing through a connecting pin shaft 9. Through this setting, the bending moment borne by the connecting bolts between the connecting support and the axle housing is reduced, and the reliability of the bolts is improved.

[0031] As Figure 2 shown in the figure, a concave groove 7 is further provided below the base 1 to reduce the weight of the connecting support. A stiffness improvement design is adopted to increase the stiffness of the support.

[0032] According to the shape of the base 1, an asymmetric connection hole 8 is arranged so that all the bolts on the weak side are outside the projection area of the push rod, which is convenient for fastening. At the same time, two are left outside the projection area of the push rod on the strong side, which is convenient for regularly checking whether the bolts are loose. The connecting support adopts a symmetric structure design so that it can be installed on the middle bridge and the rear bridge at the same time, improving the applicability.

[0033] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, or improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A push-pull rod connecting support at the rear suspension bridge end of a mining dump truck, characterized in that: It is fixed to the bridge housing by bolts, and the connecting support includes: a base and four hinged ears arranged on the base, the four hinged ears are grouped in pairs and are symmetrically arranged, each group of hinged ears is hinged to a push-pull rod at the end of the suspension bridge through a pin shaft, and the base and the hinged ears are an integrated structure.

2. The push-pull rod connecting support at the rear suspension bridge end of a mining dump truck according to claim 1, characterized in that: The two hinged ears in each group are symmetrically arranged.

3. The push-pull rod connecting support at the rear suspension bridge end of a mining dump truck according to claim 2, characterized in that: Articulated lugs are set at an angle.

4. The push-pull rod connecting support at the rear suspension bridge end of a mining dump truck according to claim 3, characterized in that: The base is an isosceles trapezoid, and one and only one hinged ear in each group is arranged on the hypotenuse of the isosceles trapezoid.

5. The push-pull rod connecting support at the rear suspension bridge end of a mining dump truck according to claim 1, characterized in that: A raised lifting surface is arranged at the center of the base, the raised lifting surface is arranged between the hinged ears, and two ends of the raised lifting surface are connected to the side surfaces of the hinged ears.

6. The push-pull rod connecting support at the rear suspension bridge end of a mining dump truck according to claim 5, characterized in that: Both sides of the lifting surface of the base are provided with connection holes for installing bolts.

7. The push-pull rod connecting support at the rear suspension bridge end of a mining dump truck according to claim 5, characterized in that: A pin hole is also provided below the base. The pin hole is arranged just below the lifting surface between each set of hinged ears and below the positive projection of the push-pull rod hinge point at the suspension bridge end, and is connected to the bridge housing through a pin.

8. The push-pull rod connecting support at the rear suspension bridge end of a mining dump truck according to claim 1, characterized in that: A concave groove is also provided under the base.

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