Novel mining excavator handle

Abstract

The utility model discloses a novel mining excavator handle, which relates to the technical field of mining excavator parts, and comprises an upper bending plate, a lower bending plate and a central support plate, the central support plate is arranged between the upper bending plate and the lower bending plate, the cross section of the central support plate is I-shaped, and the upper bending plate, the lower bending plate and the central support plate are integrally designed into an M shape. Upper lug plates are symmetrically designed on the two sides of the upper surface of the upper bent plate, lower lug plates are arranged at the two ends of the upper bent plate and the two ends of the lower bent plate respectively, and the upper bent plate, the lower bent plate, the center supporting plate, the lower lug plates and the upper lug plates are integrally formed and cast. The structure of a traditional door-shaped lifting beam is improved, the lifting beam body is designed into the M shape, the overall tensile strength is improved, the service life is prolonged, the overall section of the lifting beam is the I-shaped section, the strength is guaranteed, meanwhile, loads are reduced, and power energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of mining excavator parts, in particular to a novel lifting beam for a mining excavator. Background Art

[0002] The lifting beam is the link between the lifting wire rope and the bucket of a mining excavator. Its upper end is suspended on the lifting wire rope with an arc-shaped steel rope seat, and the lower end is hinged to the bucket. The weight of the bucket and materials as well as the lifting force during excavation are all borne by the lifting beam. Therefore, the lifting beam is the most important load-bearing component of the bucket of a large mining excavator, and its stiffness and strength performance are directly related to the safety and reliability of the excavator's operation.

[0003] The existing handles are mainly of "door" type, which is relatively traditional, with a simple structure and a relatively concentrated stress position. In addition, cracks and other failure phenomena may occur when the handles are frequently subjected to stress, and the service life is relatively short. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a new type of mining excavator handle beam, which makes structural improvements to the traditional "gate" type handle beam and designs the handle beam body into an "M" shape to improve the overall tensile strength and service life. The overall cross-section of the handle beam is an "I" type cross-section, which ensures strength while reducing the load and saving power energy.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a new type of mining excavator lifting beam, including an upper curved plate, a lower curved plate and a center support plate, the center support plate is arranged between the upper curved plate and the lower curved plate and has an "I"-shaped cross-section, the upper curved plate, the lower curved plate and the center support plate are designed as a whole in an "M" shape, upper ear plates are symmetrically designed on both sides of the upper surface of the upper curved plate, lower ear plates are respectively arranged at both ends of the upper curved plate and the lower curved plate, and the upper curved plate, the lower curved plate, the center support plate, the lower ear plate and the upper ear plate are integrally formed and cast.

[0006] Preferably, a first reinforcing rib is welded between the upper bent plate and the lower bent plate at positions close to both ends, a third reinforcing rib is welded near the center, and a second reinforcing rib is welded between the upper bent plate and the lower bent plate and at a position close to the "M"-shaped top convex point.

[0007] Preferably, the first reinforcing rib and the second reinforcing rib are both designed to be "N"-shaped.

[0008] Preferably, a fourth reinforcing rib is welded at the bottom of the lower bent plate and at a position corresponding to the concave point.

[0009] Preferably, the fourth reinforcing rib is in an arc shape, with the concave surface of the arc facing downward.

[0010] The utility model provides a new type of mining excavator lifting beam, which has the following beneficial effects:

[0011] 1. The utility model improves the structure of the traditional "door" type handle, designs the main body of the handle into an "M" shape, improves the overall tensile strength, increases the service life, is safe and reliable, and the overall cross-section of the handle is an "I" cross-section, which ensures strength while reducing the load and saving power energy;

[0012] 2. The utility model adds "N"-shaped reinforcing ribs between the upper curved plate and the lower curved plate, and cooperates with the upper curved plate and the lower curved plate to form multiple triangles. According to the principle that the triangle has stability, the overall strength and rigidity are further improved;

[0013] 3. The utility model is based on the bionic theory, and by adding arc-shaped reinforcing ribs on one side of the concave point at the bottom of the lower curved plate, a spider web structure is simulated to improve the compressive strength of the lower curved plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of the entire lifting beam of a new mining excavator of the utility model;

[0015] Figure 2 The utility model is a front view of a new type of mining excavator lifting beam.

[0016] In the figure: 1. upper ear plate; 2. upper curved plate; 3. lower curved plate; 4. center support plate; 5. first reinforcing rib; 6. second reinforcing rib; 7. third reinforcing rib; 8. fourth reinforcing rib; 9. lower ear plate. DETAILED DESCRIPTION

[0017] 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.

[0018] like Figure 1-2As shown, a new type of mining excavator lifting beam includes an upper curved plate 2, a lower curved plate 3 and a central support plate 4. The central support plate 4 is arranged between the upper curved plate 2 and the lower curved plate 3 and has an "I"-shaped cross section. The upper curved plate 2, the lower curved plate 3 and the central support plate 4 are designed as a whole in an "M" shape. Upper ear plates 1 are symmetrically designed on both sides of the upper surface of the upper curved plate 2. Lower ear plates 9 are respectively arranged at both ends of the upper curved plate 2 and the lower curved plate 3. The upper curved plate 2, the lower curved plate 3, the central support plate 4, the lower ear plate 9 and the upper ear plate 1 are integrally formed. Casting; a first reinforcing rib 5 is welded between the upper curved plate 2 and the lower curved plate 3 at positions corresponding to the two ends, a third reinforcing rib 7 is welded near the center, and a second reinforcing rib 6 is welded between the upper curved plate 2 and the lower curved plate 3 and at a position close to the "M"-shaped top convex point; the first reinforcing rib 5 and the second reinforcing rib 6 are both designed to be "N"-shaped; a fourth reinforcing rib 8 is welded at the bottom of the lower curved plate 3 and at a position corresponding to the concave point; the fourth reinforcing rib 8 is arc-shaped, and the concave surface of the arc faces downward.

[0019] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process, which are as follows:

[0020] According to the instruction manual Figure 1-2 It can be seen that the upper curved plate 2, the lower curved plate 3, the central support plate 4, the lower ear plate 9 and the upper ear plate 1 in the utility model are integrally formed and cast, and the cross section presents an "I" shape, which ensures the overall strength while reducing the overall weight and saving power energy. The upper curved plate 2, the lower curved plate 3 and the central support plate 4 are designed as an "M" shape as a whole to improve the overall tensile strength and extend the service life.

[0021] This application uses the finite element analysis software ANSYS to conduct mechanical performance simulation experiments on the "M" type and the "door" type. The material of the handle is Q345 (yield strength: 345Mpa; tensile strength: 470-660Mpa). By applying a fixed constraint to the upper ear plate 1 of the handle, a vertical load of 40t is applied to the lower ear plate 9 of the handle to simulate the lifting condition of the handle; similarly, a fixed constraint is applied to the upper ear plate 1, and a lateral load of 10t is applied to the lower ear plate 9 of the handle in the horizontal direction to simulate the swinging condition of the handle; considering the above two conditions at the same time, a fixed constraint is applied to the upper ear plate 1, and a vertical load of 40t and a lateral load of 10t are applied to the lower ear plate 9 of the handle to simulate the coupling condition of the handle, and the data are shown in Tables 1 and 2.

[0022] Table 1 is the stress and strain simulation experimental data table of the “M” type beam.

[0023] Table 2 is the stress and strain simulation experimental data table of the "door" type beam.

[0024]

[0025] Combining Table 1 and Table 2, as well as mechanical analysis, it can be seen that the smaller the stress, the greater the strength, and the smaller the strain, the greater the stiffness. Therefore, designing the handle body into an "M" shape can improve the overall tensile strength, thereby increasing the service life and ensuring safety and reliability.

[0026] Among them, the first reinforcing rib 5 is welded and provided at the positions corresponding to the two ends between the upper curved plate 2 and the lower curved plate 3, the third reinforcing rib 7 is welded and provided at the position close to the center, and the second reinforcing rib 6 is welded and provided between the upper curved plate 2 and the lower curved plate 3 and at the position close to the top convex point of the "M" shape. By adding the above reinforcing ribs, the overall tensile strength is further improved. In particular, the first reinforcing rib 5 and the second reinforcing rib 6 are both designed to be "N" shaped, and cooperate with the upper curved plate 2 and the lower curved plate 3 to form a plurality of triangles. According to the principle that the triangle has stability, the overall strength and rigidity are further improved. It should be understood that the design of the above reinforcing ribs is designed both in front and behind the center support plate, and the best is the front and back symmetrical design to further improve the overall tensile strength.

[0027] Among them, a fourth reinforcing rib 8 is welded at the bottom of the lower curved plate 3 and the position corresponding to the concave point. In particular, the fourth reinforcing rib 8 is arc-shaped, and the arc-shaped concave surface faces downward. Based on the bionic theory, an arc-shaped reinforcing rib is added to one side of the concave point at the bottom of the lower curved plate 3 to simulate the spider web structure and improve the compressive strength of the lower curved plate 3.

[0028] In addition, the lengths of the upper curved plate 2, the lower curved plate 3 and the central support plate 4 can be specifically adjusted during the processing according to the spacing of the hinged lower ear plates 9 to improve the overall adaptability of the handle.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of mining excavator lifting beam, characterized in that: The invention comprises an upper curved plate (2), a lower curved plate (3) and a central support plate (4); the central support plate (4) is arranged between the upper curved plate (2) and the lower curved plate (3) and has an "I"-shaped cross section; the upper curved plate (2), the lower curved plate (3) and the central support plate (4) are designed as a whole in an "M" shape; upper ear plates (1) are symmetrically designed on both sides of the upper surface of the upper curved plate (2); lower ear plates (9) are respectively arranged at both ends of the upper curved plate (2) and the lower curved plate (3); the upper curved plate (2), the lower curved plate (3), the central support plate (4), the lower ear plate (9) and the upper ear plate (1) are integrally molded and cast.

2. The new mining excavator lifting beam according to claim 1 is characterized in that: A first reinforcing rib (5) is welded and arranged at positions close to both ends of the upper curved plate (2) and the lower curved plate (3), a third reinforcing rib (7) is welded and arranged at a position close to the center, and a second reinforcing rib (6) is welded and arranged between the upper curved plate (2) and the lower curved plate (3) and at a position close to the "M"-shaped top convex point.

3. The new mining excavator lifting beam according to claim 2 is characterized in that: The first reinforcing rib (5) and the second reinforcing rib (6) are both designed to be "N" shaped.

4. The new mining excavator lifting beam according to claim 1 is characterized in that: A fourth reinforcing rib (8) is welded and arranged at the bottom of the lower bent plate (3) and at a position corresponding to the concave point.

5. The new mining excavator lifting beam according to claim 4 is characterized in that: The fourth reinforcing rib (8) is arc-shaped, with the concave surface of the arc facing downward.

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