A special maintenance support for an electric shovel

Abstract

The utility model discloses a kind of special maintenance support of electric shovel, including maintenance support body, the maintenance support body is "L" type structure, the maintenance support body includes support arm and force arm, the support arm and force arm are integrally structured, the through connecting hole is fixedly arranged on the maintenance support body, the connecting hole is located the central position between support arm and force arm, the maintenance support body is installed on the base of electric shovel big arm oil cylinder through connecting hole, and fixed by pin shaft, and maintenance support body can rotate along pin shaft axial, the support arm one end of maintenance support body is fixedly set support seat, the support seat and maintenance support body are integrally structured or with detachable mode connection, the support seat is cylindrical recess structure, and the support seat is matched with hydraulic jack, and up and down displacement is formed by the lifting of hydraulic jack.

Description

Technical Field

[0001] This utility model belongs to the field of open-pit mining technology, specifically relating to a special maintenance support for electric shovels. Background Technology

[0002] Electric shovels, as the main equipment in open-pit mining, are primarily used for excavation operations, transporting minerals to designated locations via heavy-duty mining trucks. With advancements in technology, the tonnage of electric shovels has gradually increased, leading to a sharp rise in maintenance difficulty. In particular, overhauling the slewing mechanism of an electric shovel requires first dismantling the nacelle, then replacing the slewing bearing and internal gear ring. Due to the excessive weight of the nacelle (around 300 tons), disassembling the entire nacelle using conventional lifting equipment is simply impossible. The nacelle must be completely disassembled before replacing the slewing bearing and internal gear ring. This not only results in excessively long maintenance times and overly cumbersome procedures, but also introduces various safety hazards, greatly increasing the risk of accidents.

[0003] In view of the above factors, a special maintenance bracket for electric shovels is provided to solve the problem of not being able to lift the shovels from the hull, and to reduce maintenance risks and improve maintenance efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a special maintenance bracket for electric shovels to solve the problems mentioned in the background art.

[0005] The purpose of this utility model is achieved through the following technical solution: a special maintenance bracket for electric shovels, including a maintenance bracket body, the maintenance bracket body having an "L" shaped structure, the maintenance bracket body including a support arm and a load-bearing arm, the support arm and the load-bearing arm being an integral structure;

[0006] The maintenance bracket body is fixedly provided with a through connection hole, which is located at the center position between the support arm and the force-bearing arm.

[0007] The maintenance support body and the boom cylinder base of the electric shovel rotation mechanism are detachably connected.

[0008] Furthermore, the maintenance bracket body is installed on the base of the electric shovel boom cylinder through the connecting hole and fixed by a pin, and the maintenance bracket body can rotate along the pin axis.

[0009] Furthermore, a support base is fixedly provided at one end of the support arm of the maintenance bracket body, and the support base is detachably connected to the maintenance bracket body.

[0010] The support base is a cylindrical concave structure, and the support base cooperates with the hydraulic jack, so that the vertical displacement is formed by the lifting and lowering of the hydraulic jack.

[0011] Furthermore, the recessed structure of the support base mates with the output end of the hydraulic jack, and the diameter of the recessed structure of the support base is larger than the diameter of the output end of the hydraulic jack.

[0012] Furthermore, a force-bearing seat is fixedly provided at the rear end of the force-bearing arm, and the force-bearing seat is welded to the force-bearing arm and extends outward.

[0013] Furthermore, the force-bearing seat is formed of steel structure, and the width of the force-bearing seat extending toward the maintenance bracket body is twice the width of the maintenance bracket body.

[0014] Furthermore, the maintenance bracket body is provided with lifting lugs, which are respectively provided on the lateral end faces of the support arm and the load-bearing arm.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The support base of this utility model has a concave structure, which is used to prevent the hydraulic jack from supporting the groove; the rear end of the force arm is provided with a force seat, which is used to transmit the force formed by the force seat pressing against the vehicle body upright plate; the force seat is welded to the force arm and extends outward to increase the contact area with the vehicle body upright plate; the lifting lugs are welded to the support arm and the force arm respectively, and are used to install special maintenance tools.

[0017] This invention not only solves the problem of the inability to hoist equipment from the engine room, but also reduces maintenance risks, improves maintenance efficiency, and avoids safety hazards caused by complicated maintenance procedures. It features a simple structure, ease of operation, recyclability, cost reduction, and efficiency improvement, while also reducing the intensity of human labor. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the support base and maintenance bracket body of this utility model;

[0020] Figure 3 This is a schematic diagram of the support base and hydraulic jack of this utility model. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "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 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.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do 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. Therefore, they should not be construed as limitations on this utility model.

[0024] like Figure 1-3 As shown, a special maintenance bracket for electric shovels includes a maintenance bracket body 1, which has an "L" shaped structure and is made of steel. The maintenance bracket body 1 includes a support arm 2 and a load-bearing arm 3, which are integrally formed.

[0025] The maintenance bracket body 1 is fixedly provided with a through connection hole 4, which is located at the center between the support arm 2 and the force-bearing arm 3.

[0026] The maintenance bracket body 1 is detachably connected to the boom cylinder base of the electric shovel slewing mechanism.

[0027] In order to facilitate the adjustment of the angle of the maintenance bracket body 1 according to the usage status, the maintenance bracket body 1 is installed on the base of the electric shovel boom cylinder through the connecting hole 4 and fixed by the pin shaft, and the maintenance bracket body 1 can rotate along the pin shaft axis.

[0028] To facilitate disassembly and replacement during use, a support base 5 is fixedly provided at one end of the support arm of the maintenance bracket body 1, and the support base 5 is detachably connected to the maintenance bracket body 1.

[0029] The support base 5 is connected to the positioning end of the maintenance bracket body 1 in an interchange manner. The positioning end has an arc-shaped structure with a through hole, and the support base 5 is connected to the through hole by bolts.

[0030] The upper end of the support base 5 is fixedly provided with a connecting ear that cooperates with the positioning end. The connecting ear has a through channel and a through hole that are connected by bolts. The positioning end and the connecting ear are used to avoid interference when the hydraulic jack 6 is raised or lowered.

[0031] The support base 5 is a cylindrical recessed structure, and the support base 5 cooperates with the hydraulic jack 6, so that the vertical displacement is formed by the lifting and lowering of the hydraulic jack 6.

[0032] To facilitate the engagement of the support base with the hydraulic jack 6 during use, the recessed structure of the support base 5 engages with the output end of the hydraulic jack 6, and the diameter of the recessed structure of the support base 5 is larger than the diameter of the output end of the hydraulic jack 6.

[0033] In order to facilitate the transmission of force formed by the compression between the force-bearing seat and the vehicle body upright plate during use, a force-bearing seat 7 is fixedly provided at the rear end of the force-bearing arm 3. The force-bearing seat 7 is welded to the force-bearing arm 3 and extends outward. The force-bearing seat 7 is formed of steel structure, and the width of the force-bearing seat 7 extending towards the maintenance bracket body 1 is twice the width of the maintenance bracket body 1.

[0034] In order to facilitate the use of cranes, forklifts and other lifting machinery to lift objects by wire rope or other means during use, the maintenance support body 1 is provided with lifting lugs 8, which are respectively located on the side end faces of the support arm 2 and the load-bearing arm 3.

[0035] When overhauling the slewing mechanism of the electric shovel, it is installed on the base of the shovel boom cylinder through the connecting hole and fixed by the pin. The special maintenance bracket can rotate axially. The support arm is equipped with a support seat, which is used by the hydraulic jack to support the support seat to form vertical displacement. The support seat has an inward concave structure to prevent the hydraulic jack from dragging when supporting. The rear end of the load arm is equipped with a load seat, which is used to transmit force by pressing the load seat against the vehicle body upright plate. The load seat is welded to the load arm and extends outward to increase the contact area with the vehicle body upright plate. Lifting lugs are welded to the support arm and the load arm respectively for installing special maintenance tools.

[0036] First, remove the boom cylinder of the electric shovel and place the bucket on the ground. Use a crane, forklift, or other lifting machinery to install the connecting holes of the maintenance support body onto the boom cylinder base using wire ropes or lifting slings, and secure it with pins. Then, remove the wire ropes or lifting slings from the lifting lugs of the support arm to make the support arm of the maintenance support body horizontal. Next, use hydraulic traction to lift it to the height of the support seat, and remove the wire ropes or lifting slings from the lifting lugs of the support arm. With four hydraulic jacks working simultaneously, the maintenance support body will move upward, and the entire hull will move upward through force transmission, thus completing the maintenance of the electric shovel's slewing mechanism.

[0037] Each maintenance requires four hydraulic jacks and two maintenance support bodies. Two hydraulic jacks support the rear of the engine compartment, while the other two hydraulic jacks work in conjunction with the maintenance support bodies to support the front of the engine compartment.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A special maintenance bracket for electric shovels, characterized in that: It includes a maintenance support body (1), which has an "L" shaped structure. The maintenance support body (1) includes a support arm (2) and a force-bearing arm (3), which are integrally formed. The maintenance bracket body (1) is fixedly provided with a through connection hole (4), which is located at the center between the support arm (2) and the force-bearing arm (3). The maintenance bracket body (1) is detachably connected to the boom cylinder base of the electric shovel slewing mechanism.

2. The special maintenance bracket for electric shovels according to claim 1, characterized in that: The maintenance bracket body (1) is installed on the base of the electric shovel boom cylinder through the connecting hole (4) and fixed by the pin shaft, and the maintenance bracket body (1) can rotate along the pin shaft axis.

3. The special maintenance bracket for electric shovels according to claim 2, characterized in that: A support base (5) is fixedly installed at one end of the support arm of the maintenance bracket body (1), and the support base (5) is detachably connected to the maintenance bracket body (1). The support base (5) is a cylindrical recessed structure, and the support base (5) cooperates with the hydraulic jack (6) to form vertical displacement by lifting and lowering the hydraulic jack (6).

4. The special maintenance bracket for electric shovels according to claim 3, characterized in that: The recessed structure of the support base (5) is matched with the output end of the hydraulic jack (6), and the diameter of the recessed structure of the support base (5) is larger than the diameter of the output end of the hydraulic jack (6).

5. The electric shovel maintenance bracket according to claim 4, characterized in that: The rear end of the force arm (3) is fixedly provided with a force seat (7), which is welded to the force arm (3) and extends outward.

6. The special maintenance bracket for electric shovels according to claim 5, characterized in that: The force-bearing seat (7) is formed of steel structure, and the width of the force-bearing seat (7) extending toward the maintenance bracket body (1) is twice the width of the maintenance bracket body (1).

7. The special maintenance bracket for electric shovels according to claim 6, characterized in that: The maintenance support body (1) is provided with lifting ears (8), which are respectively located on the side end faces of the support arm (2) and the force-bearing arm (3).

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