Integrally-formed mining electric shovel A-shaped frame pull rod, A-shaped frame and mining electric shovel

Abstract

The utility model discloses an integrally-formed mining electric shovel A-shaped frame pull rod, an A-shaped frame and a mining electric shovel. The integrally-formed mining electric shovel A-shaped frame pull rod comprises a rod part and two hinge parts. The whole rod part is of a linear structure; the two hinge parts are symmetrically arranged at the two ends of the rod part in the length direction, and the two hinge parts and the rod part are integrally forged and formed. Each hinging part is provided with a reaming hole, the hinging part at the upper end is used for being connected with an A-shaped frame pressing rod, and the hinging part at the lower end is used for being connected with a rotary table to bear the pulling force of a cargo boom on the pressing rod through a guy rope. The utility model provides a forge piece integrally-formed structure in order to reduce welding seam influence and avoid stress concentration. And integrally-formed forging is adopted, welding is removed, and therefore the cracking risk caused by unstable welding quality is reduced, and the life cycle of the A-shaped frame pull rod is prolonged. Welding workload is removed, and production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to an integrally molded A-shaped frame tie rod for mining electric shovels, belonging to the field of electric shovel technology. Background Technology

[0002] The A-frame tie rod of the electric shovel primarily bears the tension transmitted from the tension rope. Currently, the A-frame tie rod design mainly uses a welded structure (i.e., the I-beam is welded together with its hinged ends). The weld quality of this welded structure is affected by environmental and human factors, and consistency cannot be fully guaranteed. Stress concentration easily occurs at the weld seams of welded structural components. In the current tie rod design, the inner sides of the connecting ribs at both ends cannot be fully welded, and quality inspection is difficult. The inability to guarantee consistent weld quality significantly impacts the product's fatigue life. The choice of post-weld processing or post-processing welding route affects the machining dimensions and tolerances. Due to structural deformation after welding, the thickness of the connecting ribs on both sides after machining is prone to inconsistencies. Summary of the Invention

[0003] In order to reduce the impact of welds and avoid stress concentration, this utility model provides an integral forging structure.

[0004] This utility model is achieved according to the following technical solution:

[0005] In a first aspect, this utility model provides an integrally formed A-frame tie rod for a mining electric shovel, comprising:

[0006] The pole section has a single-line structure.

[0007] Two hinged parts are symmetrically arranged at both ends of the rod in the length direction, and the two hinged parts are integrally forged with the rod; each hinged part is provided with a hinge hole, the upper hinged part is used to connect with the A-shaped frame pressure rod, and the lower hinged part is used to connect with the turntable.

[0008] In some embodiments, the hinge portion includes:

[0009] Connecting block, used to connect to the rod;

[0010] A pair of opposing connecting plates are connected to the connecting block. Each connecting plate has a coaxially arranged through hole in its central area. The two coaxially arranged through holes constitute the hinge hole.

[0011] In some embodiments, the rod is a rectangular rod, the thickness of which is less than the thickness of the hinge portion, and the width of which is less than the width of the hinge portion.

[0012] In some embodiments, the centerline of the rectangular rod in the length direction coincides with the center of the rear end face of the connecting block, and the upper surface of the rectangular rod is arranged parallel to the upper surface of the hinge, and the lower surface of the rectangular rod is arranged parallel to the lower surface of the hinge; the connecting block has a front-wide and rear-narrow structure, and the rectangular rod uses rounded corners for transition at the connection points with the upper and lower surfaces of the connecting block.

[0013] In some embodiments, the front half of the connecting plate is a semi-circular plate structure; the surface of the connecting block located between the two connecting plates is a concave arc-shaped surface.

[0014] In some embodiments, the distance between the two connecting plates in the upper hinge portion is not less than the thickness of the upper hinge plate of the A-frame pressure bar; the distance between the two connecting plates in the lower hinge portion is not less than the thickness of the hinge plate on the turntable.

[0015] In some embodiments, the A-frame tie rod is symmetrical in the front-back, left-right, and up-down directions.

[0016] Secondly, this utility model provides an A-frame, including two integrally formed mining electric shovel A-frame tie rods and two A-frame pressure rods connected together; the upper hinge holes of the two A-frame tie rods are coaxially arranged with the upper connecting holes of the corresponding A-frame pressure rods and connected by inserting pins.

[0017] Thirdly, this utility model provides a mining electric shovel, including the aforementioned A-frame, machine shed cover plate, and turntable; the machine shed cover plate is located above the turntable, and the A-frame pressure rod and A-frame tie rod are both inserted through the machine shed cover plate. The lower hinge holes in the A-frame tie rod and A-frame pressure rod are coaxially arranged with the corresponding turntable connection holes and connected by inserting pins.

[0018] The beneficial effects of this utility model are:

[0019] This invention provides a one-piece forging structure to reduce the impact of welds and avoid stress concentration. The one-piece forging eliminates welding, thereby reducing the risk of cracking due to unstable welding quality and extending the lifespan of the A-frame tie rod. Eliminating welding work increases production efficiency. The symmetrical design allows for processing and control on the same benchmark, facilitating control over the thickness of the connecting ribs and the coaxiality of the pin holes after processing. Attached Figure Description

[0020] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0021] In the attached diagram:

[0022] Figure 1 This is an overall schematic diagram of the A-shaped frame tie rod of this utility model;

[0023] Figure 2 This is a rendering of the A-shaped bracket tie rod of this utility model;

[0024] Figure 3 This is a schematic diagram illustrating the application of the A-shaped bracket tie rod of this utility model.

[0025] Attached diagram labels: 101, 102, 103, 104 - connecting plate; 105, 106 - rounded corner surface; 107 - rectangular rod; 108, 109, 110, 111 - through hole; 112, 113 - connecting block; 114 - turntable; 115 - machine shed cover plate; 116 - A-shaped frame pressure rod; 117 - A-shaped frame tie rod.

[0026] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0028] In the description of this utility model, it should be noted that if one or more terms such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer" appear in the text, indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, it is only for the convenience of describing this utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," or "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] like Figure 1 , Figure 2 , Figure 3 As shown, an integrally formed A-frame tie rod for a mining electric shovel includes a rod section and two hinged sections. The rod section has a straight, linear structure. The two hinged sections are symmetrically arranged at both ends of the rod section along its length, and are integrally forged with the rod section. Each hinged section has a hinge hole. The upper hinged section is used to connect with the A-frame pressure rod 116, and the lower hinged section is used to connect with the turntable 114, bearing the tension from the lifting arm on the pressure rod via the tension rope. Because the A-frame tie rod is a forging, welding is eliminated, thereby reducing the risk of cracking due to unstable welding quality and improving the service life of the A-frame tie rod.

[0031] The following provides a further explanation of the specific structure of the aforementioned hinge.

[0032] like Figure 1 , Figure 2 As shown, the hinge part includes connecting blocks 112 and 113 and a pair of opposing connecting plates 101, 102, 103, and 104; connecting blocks 112 and 113 are used to connect with the rod part; the pair of opposing connecting plates 101, 102, 103, and 104 are connected to connecting blocks 112 and 113, and each connecting plate 101, 102, 103, and 104 has a coaxially arranged through hole 108, 109, 110, and 111 in its central area, and the two coaxially arranged through holes 108, 109, 110, and 111 constitute a hinge hole.

[0033] It should be noted that the connecting block, connecting plate and rod are connected as a whole, which can apply stress to the entire forging, reduce structural cracking caused by welding, and improve the service life of the A-frame tie rod; Figure 1 The surface shown is used as a reference surface. Four through holes are machined on the A-frame tie rod as a whole to ensure the coaxiality and geometric tolerance of the holes.

[0034] The following provides a further explanation of the specific structure of the aforementioned rod.

[0035] like Figure 1 , Figure 2 As shown, the rod is a rectangular rod 107, the thickness of which is less than the thickness of the hinge, and the width of which is less than the width of the hinge. The centerline of the rectangular rod 107 in the length direction coincides with the center of the rear end face of the connecting blocks 112 and 113, and the upper surface of the rectangular rod 107 is arranged parallel to the upper surface of the hinge, and the lower surface of the rectangular rod 107 is arranged parallel to the lower surface of the hinge. The connecting blocks 112 and 113 have a front-wide and rear-narrow structure, and the connection parts of the rectangular rod 107 with the upper and lower surfaces of the connecting blocks 112 and 113 are all transitioned with rounded corner surfaces 105 and 106.

[0036] It should be noted that changing from an I-beam structure to a square forged structure has made the design of the machine shed cover plate easier to some extent, and has also improved the overall assembly efficiency of the machine.

[0037] In a further embodiment, the front half of the connecting plates 101, 102, 103, and 104 is a semi-circular plate structure; the surfaces of the connecting blocks 112 and 113 located between the two connecting plates 101, 102, 103, and 104 are concave arc surfaces.

[0038] In a further embodiment, the distance between the two connecting plates 103 and 104 in the upper hinge section is not less than the thickness of the upper hinge plate of the A-frame pressure rod 116, so that the upper hinge plate of the A-frame pressure rod 116 can be inserted between the two connecting plates 103 and 104; the distance between the two connecting plates 101 and 102 in the lower hinge section is not less than the thickness of the hinge plate on the turntable 114, so that the hinge plate on the turntable 114 can be inserted between the two connecting plates 101 and 102.

[0039] A further design involves A-frame tie rod 117 having a symmetrical structure in the front-back, left-right, and up-down directions, ensuring a unified and controllable manufacturing process.

[0040] In summary, this utility model provides an integrally molded A-frame tie rod for mining electric shovels, achieving the following functions and effects:

[0041] The A-frame tie rod adopts a one-piece forged structure, which minimizes the number of parts.

[0042] The A-frame tie rod adopts a one-piece forged structure, avoiding welding connections at both ends, which can minimize stress concentration at both ends and thus improve the lifespan of the tie rod.

[0043] The A-frame tie rod adopts an integrated forging structure and is symmetrical. The forging process is uniform and controllable, ensuring the consistency of the left and right tie rods of the A-frame.

[0044] The A-frame tie rod adopts an integrated forged structure. Under the same stress, the fatigue life of the forged structure is several times longer than that of the welded structure.

[0045] The A-frame tie rod adopts a one-piece forged structure, which reduces the weight of the A-frame tie rod and thus reduces production costs.

[0046] The A-frame tie rod adopts an integrated forging structure with clear datum, which facilitates the control of forging and machining processes and ensures the coaxiality and geometric tolerances of the holes.

[0047] The rectangular structure of the middle rod of the A-frame tie rod facilitates the opening method at the machine shed cover and increases the ease of assembly.

[0048] The A-frame provided by this utility model is described below. The A-frame described below and the A-frame tie rod described above can be referred to in correspondence.

[0049] like Figure 3 As shown, the present invention provides an A-frame, including two integrally formed mining electric shovel A-frame tie rods and two A-frame pressure rods connected together; the upper hinge holes of the two A-frame tie rods 117 are coaxially arranged with the upper connecting holes of the corresponding A-frame pressure rods 116 and connected by inserting pins.

[0050] The beneficial effects achieved by the A-frame provided by this utility model are consistent with the beneficial effects achieved by the A-frame tie rod provided by this utility model, so they will not be repeated here.

[0051] The electric mining shovel provided by this utility model is described below. The electric mining shovel described below can be referred to in correspondence with the A-frame described above.

[0052] like Figure 3 As shown, the present invention provides a mining electric shovel, including the aforementioned A-frame, machine shed cover plate 115, and turntable 114; the machine shed cover plate 115 is located above the turntable 114, and the A-frame pressure rod 116 and A-frame tie rod 117 are both inserted through the machine shed cover plate 115. The lower hinge holes in the A-frame tie rod 117 and A-frame pressure rod 116 are coaxially arranged with the corresponding turntable connection holes and connected by inserting pins.

[0053] The beneficial effects achieved by the mining electric shovel provided by this utility model are consistent with the beneficial effects achieved by the A-frame provided by this utility model, so they will not be repeated here.

[0054] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0055] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

[0056] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A one-piece molded A-frame tie rod for a mining electric shovel, characterized in that, include: The pole section has a single-line structure. Two hinged parts are symmetrically arranged at both ends of the rod in the length direction, and the two hinged parts are integrally forged with the rod; each hinged part is provided with a hinge hole, the upper hinged part is used to connect with the A-shaped frame pressure rod, and the lower hinged part is used to connect with the turntable.

2. The integrally molded A-frame tie rod for a mining electric shovel according to claim 1, characterized in that, The hinge portion includes: Connecting block, used to connect to the rod; A pair of opposing connecting plates are connected to the connecting block. Each connecting plate has a coaxially arranged through hole in its central area. The two coaxially arranged through holes constitute the hinge hole.

3. The integrally formed A-frame tie rod for a mining electric shovel according to claim 2, characterized in that: The rod is a rectangular rod, the thickness of which is less than the thickness of the hinge, and the width of which is less than the width of the hinge.

4. The integrally formed A-frame tie rod for a mining electric shovel according to claim 3, characterized in that: The centerline of the rectangular rod in the length direction coincides with the center of the rear end face of the connecting block, and the upper surface of the rectangular rod is arranged parallel to the upper surface of the hinge, and the lower surface of the rectangular rod is arranged parallel to the lower surface of the hinge. The connecting block has a front-wide and back-narrow structure, and the rectangular rods use rounded corners at the connection points with the upper and lower surfaces of the connecting block.

5. The integrally formed A-frame tie rod for a mining electric shovel according to claim 2, characterized in that: The front half of the connecting plate is a semi-circular plate structure; the surface of the connecting block located between the two connecting plates is a concave arc surface.

6. The integrally formed A-frame tie rod for a mining electric shovel according to claim 2, characterized in that: The distance between the two connecting plates in the upper hinge section shall not be less than the thickness of the upper hinge plate of the A-frame pressure bar; The distance between the two connecting plates in the lower hinge section is not less than the thickness of the hinge plate on the turntable.

7. The integrally formed A-frame tie rod for a mining electric shovel according to claim 1, characterized in that: The A-frame tie rod has a symmetrical structure in the front-back, left-right, and up-down directions.

8. An A-frame, characterized in that: It includes the integrally formed A-frame tie rod of the mining electric shovel as described in any one of claims 1 to 7 and two A-frame pressure rods connected together; The upper hinge holes of the two A-frame tie rods are coaxially arranged with the upper connecting holes of the corresponding A-frame pressure rods and then connected by inserting pins.

9. A mining electric shovel, characterized in that: It includes the A-frame, machine shed cover plate, and turntable as described in claim 8; the machine shed cover plate is located above the turntable, and the A-frame pressure rod and A-frame tie rod are both inserted through the machine shed cover plate. The lower hinge holes of the A-frame tie rod and A-frame pressure rod are coaxially arranged with the corresponding turntable connection holes and connected by inserting pins.

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