Connecting device of bottom opening lever of electric shovel

Abstract

The invention relates to the technical field of electric shovels, in particular to a connecting device of an electric shovel bottom opening lever. Comprising a mounting block, a connecting plate connected with an electric bucket body is arranged at one end of the mounting block, an inserting groove is formed in the side wall of the mounting block, the two ends of the inserting groove penetrate through the two opposite side walls of the mounting block to be communicated with the outside, one end of a bottom opening lever is inserted into the inserting groove, and the mounting block is connected with the bottom opening lever through a fixing bolt. According to the bottom opening mechanism, the bottom opening lever and the electric bucket body are stably connected through the arranged mounting block, so that the series of faults of self-opening of the bucket door in the previous production are solved, and the stable operation of the bottom opening mechanism is ensured; the inserting groove is formed in the mounting block, the bottom opening lever is connected with the mounting block through the fixing bolt, dismounting is convenient, the mounting process is simpler, more convenient and faster, when parts need to be maintained or replaced, only the fixing bolt needs to be screwed off, the bottom opening lever can be taken out of the inserting groove, and the maintenance time is greatly shortened.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric shovel, in particular to a connecting device of a bottom opening lever of an electric shovel. BACKGROUND

[0002] The open-pit mine adopts the way of direct mining on the ground to work, and the main excavating equipment in the open-pit mining process is an electric shovel. At present, the bottom opening lever of the electric shovel is connected with the bucket body directly through an unloading buckle. Since the bottom opening lever generates a large impact force in the work, the strength of the unloading buckle cannot meet the long-term work of the bottom opening lever, and the bottom opening lever and the unloading buckle are non-design matching parts, so cutting and welding need to be performed on the bottom opening lever for matching use, which greatly weakens the strength of the bottom opening lever and leaves a safety hazard.

[0003] The electric shovel has a large size, and the maximum height difference between the upper and lower positions is 18 meters, wherein the height difference between the upper and lower positions of the bucket mechanism where the bottom opening lever is located can reach 15 meters. The bottom opening lever controls the opening of the bucket door, and once the bottom opening lever connecting device fails, the bucket door is prone to be opened automatically (referred to as: spoon door self-opening in the industry). The spoon door self-opening is extremely harmful, and in the process of heavy load excavation, the self-opening of the bucket door will cause the bucket door to knock the connecting cylinder of the bucket lever, causing the connecting cylinder to be damaged and the equipment to be shut down. In the process of heavy load loading, the self-opening of the bucket door is more harmful. In the process of loading of the excavator, the excavator cooperates with the heavy self-unloading truck, and the self-opening of the bucket door will cause the goods to hit the truck and the bucket to scratch the truck, which may cause the equipment to be shut down, or even cause personnel injury and death. Therefore, a reliable bottom opening lever connecting device is urgently needed in production to ensure the stability of the bottom opening mechanism, and the present application is proposed. SUMMARY The present application aims to provide a connecting device of a bottom opening lever of an electric shovel, which can stably connect the bottom opening lever with the bucket body and avoid the self-opening of the bucket door in production, thereby ensuring the stable operation of the bucket bottom opening mechanism.

[0004] The present application provides a connecting device of a bottom opening lever of an electric shovel, which comprises a mounting block, one end of the mounting block is provided with a connecting plate connected with the bucket body of the electric shovel, a slot is arranged on the side wall of the mounting block, the two ends of the slot penetrate through the opposite two side walls of the mounting block and are in communication with the outside, one end of the bottom opening lever is inserted into the slot, and the mounting block is connected with the bottom opening lever through a fixing bolt.

[0005] Further, the mounting block comprises a first plate body and a second plate body which are detachably connected.

[0006] Further, a recess is arranged on the first plate body, a protrusion is arranged on the second plate body, and the protrusion is located in the recess.

[0007] Further, the depth of the recess is greater than the thickness of the protrusion, and the slot is formed between the recess and the protrusion.

[0008] Further, the connecting plate is provided with a connecting hole, and the connecting hole is connected with the electric shovel bucket body.

[0009] Further, one end of the first plate body is provided with a first limiting hole, and one end of the second plate body is provided with a second limiting hole.

[0010] Further, the recess is provided with a first fixing hole, the protrusion is provided with a second fixing hole, and one end of the open-bottom lever is provided with a third fixing hole.

[0011] Further, the second plate body is provided with a placing hole at one end of the second limiting hole and the second fixing hole away from the protrusion.

[0012] Further, the diameter of the first limiting hole and the second limiting hole is 34mm.

[0013] Further, the diameter of the first fixing hole and the second fixing hole is 40mm.

[0014] Compared with the prior art, the present application has the following advantages: The mounting block is arranged to connect the open-bottom lever with the electric shovel bucket body, so that the open-bottom lever is stably connected with the electric shovel bucket body, the series of faults of the bucket door self-opening is solved, and the stable operation of the open-bottom mechanism is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description.

[0016] Figure 1 Fig. 1 is a structural schematic view of the connecting device in the embodiment of the present application. Figure 2 Fig. 2 is a structural schematic view of the first plate body in the embodiment of the present application. Figure 3 is a rear view of the first plate body in an embodiment of the present application; Figure 4 is a side view of the first plate body in an embodiment of the present application; Figure 5 is a structural schematic view of the second plate body in an embodiment of the present application; Figure 6 is a rear view of the second plate body in an embodiment of the present application; Figure 7 is a side view of the second plate body in an embodiment of the present application; Figure 8 is a three-dimensional structural schematic view of the connection of the connecting device and the open-bottom lever in an embodiment of the present application; Figure 9 is a structural schematic view of an existing electric shovel bucket.

[0017] BRIEF DESCRIPTION OF THE DRAWINGS: 1 - mounting block; 101 - first plate body; 1011 - groove; 1012 - first limiting hole; 1013 - first fixing hole; 102 - second plate body; 1021 - protrusion; 1022 - second limiting hole; 1023 - second fixing hole; 2 - connecting plate; 201 - connecting hole; 3 - insertion slot; 4 - open-bottom lever; 5 - bucket body; 6 - bucket door; 7 - bucket bolt; 8 - insertion hole. DETAILED DESCRIPTION

[0018] The technical solutions of the present application will be described below in conjunction with the embodiments, obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Example A connecting device for the bottom-opening lever of an electric shovel, such as Figure 1 As shown, it includes mounting block 1 and connecting plate 2, as detailed below: Mounting block 1 is rectangular in shape. One end of mounting block 1 is fixed with a connecting plate 2 that connects to the electric shovel bucket. A connecting hole 201 is provided through the connecting plate 2. This connecting device is hinged to the electric shovel bucket through the connecting hole 201, achieving a stable connection with the bucket. A slot 3 is provided on the side wall of mounting block 1. Both ends of the slot 3 penetrate the two opposite side walls of mounting block 1 and communicate with the outside. One end of the bottom-opening lever 4 is inserted into the slot 3 (e.g., ...). Figure 8 As shown in the figure, the mounting block 1 is connected to the bottom lever 4 by fixing bolts.

[0022] Mounting block 1 includes a first plate 101 and a second plate 102 that are detachably connected, and connecting block 2 is fixed to the top of the side wall of the first plate 101. The first plate 101 is provided with a groove 1011 (e.g., Figure 2 and Figure 4 As shown), the second plate 102 is provided with a protrusion 1021 (as shown). Figure 5 and Figure 7 As shown, the protrusion 1021 is inserted into the groove 1011. The depth of the groove 1011 is greater than the thickness of the protrusion 1021. After the protrusion 1021 and the groove 1011 are engaged, a slot 3 is naturally formed between the groove 1011 and the protrusion 1021 for the bottom lever to be inserted.

[0023] The first plate 101 is provided with a first limiting hole 1012 at one end near the connecting plate 2 (e.g., ...). Figure 2 and Figure 3 As shown), the second plate 102 is provided with a second limiting hole 1022 at one end near the connecting plate 2 (as shown). Figure 5 and Figure 6As shown, the first limiting hole 1012 and the second limiting hole 1022 are connected by limiting bolts. The first plate 101 and the second plate 102 are connected together by the limiting bolts to ensure the structural stability of the mounting block 1.

[0024] A first fixing hole 1013 is provided through the groove 1011 of the first plate 101, and a second fixing hole 1023 is provided through the protrusion 1021 of the second plate 102. One end of the bottom-opening lever has a third fixing hole. The fixing bolt passes through the second fixing hole 1023, the third fixing hole and the first fixing hole 1013 in sequence to connect and firmly fix the bottom-opening lever to the mounting block 1, preventing the bottom-opening lever from loosening or falling off during operation. The diameter of the first fixing hole 1013 and the second fixing hole 1023 is 40mm.

[0025] The second plate 102 is provided with hexagonal placement holes 1024 at the ends of the second limiting hole 1022 and the second fixing hole 1023 away from the protrusion 1021 (e.g., Figure 7 As shown, the two placement holes 1024 are used to place the nuts of the limiting bolt and the fixing bolt, respectively, to prevent the nuts from being exposed and affecting the overall structure and working performance of the device. The diameter of the first limiting hole 1012 and the second limiting hole 1022 is 34mm, and the diameter of the placement hole 1024 is larger than the diameter of the first limiting hole 1012 and the second limiting hole 1022.

[0026] When the bottom-opening lever needs to be replaced during use, the connecting device provided by this invention can be easily replaced by simply unscrewing the fixing bolts, pulling the bottom-opening lever out of the slot 3, replacing it with a new one, and then fixing it with the fixing bolts. When the first plate 101 or the second plate 102 of the mounting block 1 is damaged, the limiting bolts and fixing bolts can be unscrewed, the damaged plate can be removed, a new plate can be replaced, and then it can be fixed with the limiting bolts and fixing bolts.

[0027] Electric shovels in the prior art, such as Figure 9 As shown, the electric shovel bucket includes a bucket body 5 and a bucket gate 6. The opening and closing of the bucket gate 6 is achieved by a bottom-opening lever 4 pulling a bucket bolt 7. The bottom-opening lever 4 is inserted into the frame of the bucket gate 6, and the bucket bolt 7 is fixedly connected to the bottom-opening lever 4. The lower part of the bucket body 5 is provided with a socket 8. When the bucket gate 6 is closed, the bucket bolt 7 is inserted into the socket 8. When it is necessary to open the bucket gate 6, the bottom-opening lever 4 is pulled upward by a wire rope. The bottom-opening lever 4 drives the bucket bolt 7 to move upward and disengage from the socket 8, thus opening the bucket gate 6. The connecting device provided by this invention is installed at the end of the bottom-opening lever 4 away from the bucket bolt 7.

[0028] By setting the slot on the mounting block, the open-bottom lever and the mounting block are detachably connected, when the open-bottom lever is damaged, only the fixing bolt is disassembled, the open-bottom lever can be taken out from the slot for replacement, the operation is simple, and maintenance and replacement are convenient. The mounting block adopts split design and is detachably connected by the first plate body and the second plate body, which not only reduces the machining difficulty, is easy to process and saves the production cost, but also when part of the structure of the mounting block is damaged, only the corresponding plate body needs to be replaced, the whole mounting block does not need to be replaced, and the maintenance cost is further reduced. At the same time, the split design can quickly disassemble and install during maintenance, greatly shortening the maintenance time. In addition, the present application is suitable for too heavy WK-35 type excavator, and is also suitable for WK-20 type excavator, and has wide application range, and beneficial effects are obtained in cost and benefit.

[0029] In summary, the present application is designed by splitting and detachable connection, which effectively reduces the maintenance cost and shortens the maintenance time on the basis of ensuring the stable operation of the open-bottom lever mechanism, and is easy to process and replace, and has good practicability and economy.

[0030] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A connecting device for an electric shovel bottom-opening lever, characterized in that, The device includes a mounting block (1), one end of which is provided with a connecting plate (2) connected to the electric shovel bucket body. The mounting block (1) has a slot (3) on its side wall. The two ends of the slot (3) pass through the two opposite side walls of the mounting block (1) and communicate with the outside. One end of the bottom-opening lever (4) is inserted into the slot (3). The mounting block (1) is connected to the bottom-opening lever (4) by fixing bolts.

2. The connecting device for the electric shovel bottom-opening lever according to claim 1, characterized in that, The mounting block (1) includes a first plate (101) and a second plate (102) that are detachably connected.

3. The connecting device for the electric shovel bottom-opening lever according to claim 2, characterized in that, The first plate (101) has a groove (1011) and the second plate (102) has a protrusion (1021) located in the groove (1011).

4. The connecting device for the electric shovel bottom-opening lever according to claim 3, characterized in that, The depth of the groove (1011) is greater than the thickness of the protrusion (1021), and the slot (3) is formed between the groove (1011) and the protrusion (1021).

5. The connecting device for the electric shovel bottom-opening lever according to claim 1, characterized in that, The connecting plate (2) is provided with a connecting hole (201), and is hinged to the electric shovel bucket body through the connecting hole (201).

6. The connecting device for the electric shovel bottom-opening lever according to claim 1, characterized in that, The first plate (101) has a first limiting hole (1012) at one end, and the second plate (102) has a second limiting hole (1022) at one end. The first limiting hole (1012) and the second limiting hole (1022) are connected by limiting bolts.

7. The connecting device for the electric shovel bottom-opening lever according to claim 6, characterized in that, The groove (1011) is provided with a first fixing hole (1013), the protrusion (1021) is provided with a second fixing hole (1023), one end of the open-bottom lever is provided with a third fixing hole, and the fixing bolt passes through the second fixing hole (1023), the third fixing hole and the first fixing hole (1013) in sequence.

8. The connecting device for the electric shovel bottom-opening lever according to claim 7, characterized in that, The second plate (102) has placement holes (1024) at the ends of the second limiting hole (1022) and the second fixing hole (1023) away from the protrusion (1021), respectively. The two placement holes (1024) are used to place the nuts of the limiting bolt and the fixing bolt, respectively.

9. The connecting device for the electric shovel bottom-opening lever according to claim 8, characterized in that, The diameters of the first limiting hole (1012) and the second limiting hole (1022) are 34 mm.

10. The connecting device for the electric shovel bottom-opening lever according to claim 9, characterized in that, The diameters of the first fixing hole (1013) and the second fixing hole (1023) are both 40 mm.

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