Counterweight system of electric shovel

Abstract

The utility model provides an electric shovel counterweight system which comprises a primary box body, a primary box movable top cover and a plurality of secondary box bodies, the primary box body is provided with a primary box cavity used for containing the plurality of secondary box bodies, the secondary box bodies are used for containing counterweight balls, and the secondary box bodies are provided with hoisting pieces; a plurality of vertical partition plates which are arranged in a crossed manner are arranged in the primary box cavity, the primary box cavity is divided into a plurality of compartments by the vertical partition plates, and the secondary box bodies can be arranged in the compartments; the mother box movable top cover can be arranged at the top of the mother box body to cover the top opening of the mother box cavity; a plurality of vertical guide plates distributed in the circumferential direction of the compartment at intervals are arranged in the compartment, the vertical guide plates are arranged on the side wall of the vertical partition plate and protrude towards the interior of the compartment from the side wall of the vertical partition plate, and the child box body can move into the compartment from the top opening of the mother box body along the vertical guide plates. The technical problem that the balance weight of the electric shovel is inconvenient to adjust is solved.

Description

Technical Field

[0001] The utility model relates to the field of large-scale excavators in open-pit mines, in particular to an electric shovel counterweight system. Background Art

[0002] The counterweight box of the electric shovel is installed at the tail of the shovel's rotary platform. It is an important component of the electric shovel, which restricts the plane layout design of the rotary platform and the structural design of the whole machine. The balance of the electric shovel mainly depends on the balance weight and counterweight. The balance weight has been determined when the excavator was initially designed. It plays the role of initially balancing the front working device. The counterweight is hung at the tail of the counterweight box. The connection with the counterweight box adopts the method of stop hook and strip positioning and bolt connection. It is generally not easily disassembled. The weight of the counterweight is selected after the whole machine is fully assembled, according to the different models of buckets and the different density of materials at the work site. For example, for a bucket of the same model, when the material density is large, the weight of the counterweight that needs to be added is large. The weight of the counterweight is generally composed of a counterweight ball, which is placed in the counterweight box. The counterweight box is located at the tail of the rotary platform. The counterweight ball is generally a steel ball.

[0003] During the assembly process of the electric shovel, after the counterweight box is installed on the platform, the steel balls must be loaded into the bucket first, and then the bucket must be lifted by a crane to a height of more than 4 meters above the ground, and then transferred to the top of the platform, and then the iron balls must be dumped into the counterweight box. The weight of the counterweight ball can reach up to more than 200 tons. This counterweight method has the following problems: (1) When transferring and loading the counterweight ball into the counterweight box, many types of work and workers are required, and the installation is very time-consuming and labor-intensive; (2) The hoisting process is very dangerous, for example: hoisting cannot be carried out in bad weather such as strong winds, and steel balls may fall and injure people during the hoisting process; (3) Inaccurate measurement leads to inaccurate weight of the counterweight, affecting the normal operation and safety of the equipment.

[0004] When the electric shovel needs to be disassembled or adjusted, it is difficult to remove the counterweight ball from the top of the counterweight box. Usually, it is necessary to weld and cut the bottom cover of the counterweight box, and then let the iron ball fall to the ground under the action of gravity. There are the following problems: (1) Welding and cutting the bottom plate requires fire, which is complicated and has a fire hazard; (2) Welding and cutting require lying on your back, which can easily injure the operator; the bottom plate may fall suddenly and easily injure the staff; (3) Welding and cutting the bottom plate will damage the main body of the counterweight box and the structural strength; (4) Once the bottom plate is cut off, all the steel balls fall and the release amount cannot be controlled; (5) The bottom plate of the counterweight box is more than 2.5 meters above the ground, and the steel balls falling on the ground will cause damage to the ground; (6) The iron balls that fall on the ground need to be transported again, which is time-consuming and labor-intensive; (7) In winter, the steel balls will stick together due to ice and cannot be removed. Utility Model Content

[0005] The utility model aims to provide an electric shovel counterweight system to solve the technical problem that the counterweight of the electric shovel is inconvenient to adjust.

[0006] The above-mentioned purpose of the utility model can be achieved by adopting the following technical solutions:

[0007] The utility model provides an electric shovel counterweight system, comprising: a main box, a main box movable top cover and a plurality of sub-boxes, wherein the main box has a main box cavity for accommodating a plurality of the sub-boxes, the sub-boxes are used to accommodate counterweight balls, and the sub-boxes are provided with hanging parts;

[0008] A plurality of intersecting vertical partitions are arranged in the mother box cavity, and the vertical partitions divide the mother box cavity into a plurality of compartments, and the sub-boxes can be arranged in the compartments; the mother box movable top cover can be arranged on the top of the mother box body to cover the top opening of the mother box cavity;

[0009] The compartment has a plurality of vertical guide plates which are distributed at circumferential intervals along the compartment. The vertical guide plates are arranged on the side walls of the vertical partitions and protrude from the side walls of the vertical partitions into the compartment. The sub-box can move from the top opening of the mother box along the vertical guide plates into the compartment.

[0010] In a preferred embodiment, the top surface of the mother box is connected to a top frame, which includes an outer frame and an inner connecting plate arranged on the top surface of the vertical partition, and along the thickness direction of the vertical partition, the inner connecting plate extends into the compartment, and the vertical guide plate exceeds the edge of the inner connecting plate in a direction pointing into the compartment.

[0011] In a preferred embodiment, each of the compartments is respectively provided with the mother box movable top cover, and the mother box movable top cover is at least partially located in the space surrounded by the inner connecting plates, and the bottom surface of the mother box movable top cover contacts the top surface of the vertical guide plate.

[0012] In a preferred embodiment, the top of each of the vertical guide plates is in contact with the top frame, and a preset distance is provided between the bottom of the vertical guide plate and the bottom surface of the compartment.

[0013] In a preferred embodiment, the side walls of at least two of the vertical partitions are provided with vertical plates, which are attached to the side walls of the vertical partitions and connected to the bottom of the vertical guide plates; the vertical plates and the side walls of the vertical partitions on which the vertical plates are provided are provided with penetrating lifting holes.

[0014] In a preferred embodiment, the vertical plate has a protrusion and at least two vertical grooves, the vertical guide plate extends into the vertical grooves, and the protrusion extends vertically and is located between two adjacent vertical guide plates.

[0015] In a preferred embodiment, the outer frame and the inner connecting plate are an integral structure.

[0016] In a preferred embodiment, the bottom wall of the mother box is provided with a bottom drainage hole.

[0017] In a preferred embodiment, the lifting part includes a lifting ear; the sub-box body includes a sub-box side wall and a sub-box top cover, the lifting ear is arranged on the inner wall of the sub-box side wall and extends into the sub-box body, and the connection between the lifting ear and the sub-box side wall is located in the sub-box body, and the lifting ear portion extends to the outside of the sub-box top cover.

[0018] In a preferred embodiment, the sub-box top cover includes a fixed cover plate and a movable cover plate, the fixed cover plate is fixed to the sub-box side wall, the fixed cover plate is provided with at least one balancing weight ball addition port, and the movable cover plate is connected to the balancing weight ball addition port.

[0019] In a preferred embodiment, a vertical connection plate is provided in the sub-box, the vertical connection plate is fixedly connected to the inner wall of the sub-box side wall, and the vertical connection plate is provided with a connecting hole for the counterweight ball to pass through.

[0020] In a preferred embodiment, the sub-box includes a cable tube; the sub-box side wall and the sub-box top cover are respectively provided with through holes, the cable tube is at least partially arranged in the sub-box, and the ends of the cable tube are respectively connected to the through holes of the sub-box side wall and the through holes of the sub-box top cover, the cable can be passed through the cable tube and can extend from the outside of the sub-box side wall into the sub-box and then to the outside of the sub-box top cover.

[0021] In a preferred embodiment, the side wall of the mother box is provided with a connecting portion for connecting to the platform of the electric shovel, and the mother box can be suspended and connected to the platform of the electric shovel through the connecting portion.

[0022] The characteristics and advantages of this utility model are:

[0023] The main box in the electric shovel counterweight system can be connected to the platform of the electric shovel, and the sub-box contains the counterweight ball. The sub-box is placed in each compartment, and the external equipment can lift the sub-box through the lifting lug to install or remove the sub-box. A sub-box and the counterweight ball therein as a whole provide counterweight weight and can be installed and removed.

[0024] During the installation process, the sub-box moves from top to bottom into the compartment, and the side walls of the sub-box can contact the vertical guide plates to ensure that the sub-box is smoothly loaded into the compartment. During the removal process, since the contact area between the vertical guide plates and the side walls of the sub-box is small, the friction is reduced, making it easier to remove the sub-box from the compartment. In addition, a plurality of vertical guide plates are distributed at intervals along the circumference of the compartment. When the sub-box is installed in the compartment, the vertical guide plates are distributed around the sub-box, and the side walls of the sub-box can contact the vertical guide plates. The vertical guide plates limit the sub-box, keeping the position of the sub-box stable, thereby ensuring that the sub-box moves smoothly relative to the mother box during the removal and installation process, and ensuring the stability of the position of the sub-box. The vertical guide plates can also enhance the strength of the vertical partitions, which is beneficial for the electric shovel counterweight system to provide accurate counterweight weight.

[0025] The electric shovel counterweight system is adopted to facilitate loading and unloading of each sub-box, thus solving the technical problem that the counterweight of the electric shovel is difficult to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 An axonometric diagram of the electric shovel counterweight system provided by the utility model;

[0028] Figure 2 A top view of the electric shovel counterweight system provided by the utility model;

[0029] Figure 3 for Figure 2 DD-direction cross-sectional view;

[0030] Figure 4 This is an axonometric diagram of the mother box in the electric shovel counterweight system provided by the utility model;

[0031] Figure 5 for Figure 4 A local enlarged view of point A;

[0032] Figure 6 for Figure 4 A local enlarged view of point B;

[0033] Figure 7 Based Figure 4 A top view of the mother box shown;

[0034] Figure 8 for Figure 7A local enlarged view of point C;

[0035] Fig. 9 Based Figure 4 The front view of the mother box is shown

[0036] Fig.10 for Fig. 9 EE-direction cross-sectional view;

[0037] Fig.11 A front view of an embodiment of a sub-box in the electric shovel counterweight system provided by the utility model;

[0038] Fig.12 for Fig.11 A top view of the sub-box shown;

[0039] Fig.13 for Fig.12 FF-direction cross-sectional view;

[0040] Fig.14 A front view of another embodiment of a sub-box in the electric shovel counterweight system provided by the utility model;

[0041] Fig.15 for Fig.14 The cross-sectional view along the GG direction;

[0042] Fig.16 A schematic diagram of the connection between the electric shovel counterweight system provided by the utility model and the electric shovel platform;

[0043] Fig.17 for Fig.16 A local enlarged view of point H in FIG.

[0044] Description of Figure Numbers:

[0045] 10. Mother box; 11. Connecting part;

[0046] 12. Vertical partition; 13. Compartment;

[0047] 20. Vertical guide plate; 21. Preset spacing;

[0048] 30. Top frame; 31. Outer frame; 32. Inner connecting plate;

[0049] 33. vertical plate; 34. protrusion; 35. vertical groove;

[0050] 36. Movable top cover of mother box;

[0051] 37. Horizontal ribs;

[0052] 40. Sub-box; 41. Lifting lug;

[0053] 42. Sub-box side wall;

[0054] 43. Sub-box top cover; 431. Through hole

[0055] 44. Fixed cover; 45. Movable cover;

[0056] 50. vertical connecting plate; 51. connecting hole;

[0057] 60. Cable pipe;

[0058] 70. Platform. DETAILED DESCRIPTION

[0059] 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.

[0060] The utility model provides an electric shovel counterweight system, such as Figure 1-Figure 17 As shown, it includes: a mother box 10, a mother box movable top cover 36 and a plurality of sub-boxes 40, the mother box 10 has a mother box cavity for accommodating a plurality of sub-boxes 40, the sub-boxes 40 are used to accommodate counterweight balls, and the sub-boxes 40 are provided with lifting parts; a plurality of intersecting vertical partitions 12 are arranged in the mother box cavity, the vertical partitions 12 divide the mother box cavity into a plurality of compartments 13, and the sub-boxes 40 can be arranged in the compartments 13; the mother box movable top cover 36 can be arranged on the top of the mother box 10 to cover the top opening of the mother box cavity; the compartment 13 has a plurality of vertical guide plates 20 distributed at intervals along the circumference of the compartment 13, the vertical guide plates 20 are arranged on the side walls of the vertical partitions 12 and the vertical guide plates 20 protrude from the side walls of the vertical partitions 12 into the compartment 13, and the sub-boxes 40 can move from the top opening of the mother box 10 along the vertical guide plates 20 to the compartment 13.

[0061] The main box 10 in the electric shovel counterweight system can be connected to the platform 70 of the electric shovel, and the sub-box 40 contains the counterweight ball. The sub-box 40 is placed in each compartment 13, and the external equipment can lift the sub-box 40 through the lifting parts to install or remove the sub-box 40. A sub-box 40 and the counterweight ball therein as a whole provide counterweight weight, and can be installed and removed.

[0062] During installation, the sub-box 40 moves from top to bottom into the compartment 13, and the side wall of the sub-box 40 can contact the vertical guide plate 20, ensuring that the sub-box 40 is smoothly installed in the compartment 13. During removal, since the contact area between the vertical guide plate 20 and the side wall of the sub-box 40 is small, the friction force is reduced, and the sub-box 40 is easily removed from the compartment 13. In addition, multiple vertical guide plates 20 are distributed at intervals along the circumference of the compartment 13. When the sub-box 40 is installed in the compartment 13, the vertical guide plates 20 are distributed around the sub-box 40. The side walls of the sub-box 40 can contact the vertical guide plates 20. The vertical guide plates 20 limit the sub-box 40, so that the position of the sub-box 40 remains stable, which can ensure that the sub-box 40 can move smoothly relative to the mother box 10 during the removal and installation process, and can ensure the stability of the position of the sub-box 40. The vertical guide plates 20 can also enhance the strength of the vertical partition 12, which is beneficial for the electric shovel counterweight system to provide accurate counterweight weight.

[0063] The electric shovel counterweight system is adopted to facilitate loading and unloading of each sub-box 40, thereby solving the technical problem that the counterweight of the electric shovel is difficult to adjust.

[0064] In one embodiment, the top surface of the mother box 10 is connected to a top frame 30, and the top frame 30 includes an outer frame 31 and an inner connecting plate 32 arranged on the top surface of the vertical partition 12, and along the thickness direction of the vertical partition 12, the inner connecting plate 32 extends into the compartment 13, and the vertical guide plate 20 exceeds the edge of the inner connecting plate 32 in the direction pointing into the compartment 13. The top frame 30 protects the top surfaces of the vertical partitions 12 and the mother box 10, and the vertical partitions 12 and the mother box 10 are both connected to the top frame 30, which is beneficial to enhancing the overall structural strength of the mother box 10. The width of the inner connecting plate 32 is greater than the thickness of the vertical partition 12, such as Figure 4-Figure 8 As shown, for a compartment 13, the cross-section of the space enclosed by the vertical partitions 12 is larger than the cross-section of the space enclosed by the inner connecting plates 32 of the top frame 30, and the cross-section of the space enclosed by the inner connecting plates 32 of the top frame 30 is larger than the cross-section of the space enclosed by the plurality of circumferentially distributed vertical guide plates 20. This can not only provide good protection for the mother box 10 and the vertical partitions 12, but also ensure that the sub-box 40 can be smoothly loaded into the compartment 13 during installation.

[0065] Further, each compartment 13 is provided with a mother box movable top cover 36, which is at least partially located in the space surrounded by the inner connecting plate 32, and the bottom surface of the mother box movable top cover 36 contacts the top surface of the vertical guide plate 20. The vertical guide plate 20 supports the mother box movable top cover 36, and the mother box movable top cover 36 is adapted to the cross section of the space surrounded by the inner connecting plate 32 of the top frame 30. The inner connecting plate 32 limits the position of the mother box movable top cover 36. The mother box movable top cover 36 covers the sub-box 40 located in the compartment 13 and protects the sub-box 40. The upper surface of the mother box movable top cover 36 can be used to install various electrical equipment. The upper surface of the mother box movable top cover 36 can provide a relatively flat surface, which is convenient for the installation of electrical equipment, conducive to the installation and commissioning of the electric shovel, and saves costs. Preferably, the bottom surface of the mother box movable top cover 36 contacts the top surface of the vertical guide plate 20 , and the top surface of the mother box movable top cover 36 is substantially flush with the upper surface of the top frame 30 .

[0066] In one embodiment, a preset distance 21 is provided between the bottom of the vertical guide plate 20 and the bottom surface of the compartment 13 . During installation, after the sub-box 40 moves a certain distance into the compartment 13, the upper part of the side wall of the sub-box 40 contacts the vertical guide plate 20, and the lower part of the side wall of the sub-box 40 moves to the preset spacing 21. This part does not contact the vertical guide plate 20, which is beneficial to ensure the smooth movement of the sub-box 40; after the sub-box 40 moves into place, the vertical guide plate 20 limits the upper part of the sub-box 40, that is, it can ensure the stability of the position of the sub-box 40 in the compartment 13; at the same time, since the preset spacing 21 is reserved, that is, the bottom of the sub-box 40 does not contact the vertical guide plate 20, even if there are dust and impurities in the compartment 13, and the dust and impurities will sink to the bottom of the compartment 13, it can also reduce the jamming between the vertical guide plate 20 and the sub-box 40 caused by the dust and impurities, which is beneficial to smoothly remove the sub-box 40 from the compartment 13 during debugging and maintenance after the electric shovel has worked for a period of time.

[0067] Furthermore, the top of each vertical guide plate 20 is in contact with the top frame 30, such as Figure 4-Figure 6 As shown, the vertical guide plate 20 is disposed between the top frame 30 and the vertical partition 12 and between the top frame 30 and the side wall of the mother box 10, and abuts against the top frame 30, which is beneficial to enhance the structural strength of the top frame 30. The top of the vertical guide plate 20 and the top frame 30 can be welded.

[0068] In one embodiment, at least two vertical partitions 12 are provided with vertical plates 33 on their side walls. The vertical plates 33 are attached to the side walls of the vertical partitions 12 and connected to the bottom of the vertical guide plate 20. The vertical plates 33 and the side walls of the vertical partitions 12 on which the vertical plates 33 are provided are provided with hanging holes. A hanging tool can pass through the hanging holes to facilitate hanging of the mother box 10. Figure 5 As shown, the vertical plate 33 is connected to the vertical partition plate 12 and the vertical guide plate 20, which not only ensures the structural strength of the lifting hole area, but also enhances the connection strength between the vertical guide plate 20 and the vertical partition plate 12, which is beneficial to improving the overall strength of the mother box 10.

[0069] Furthermore, the vertical plate 33 has a protrusion 34 and at least two vertical grooves 35, the vertical guide plate 20 extends into the vertical groove 35, and the protrusion 34 extends vertically and is located between two adjacent vertical guide plates 20, such as Figure 5 As shown, the vertical plate 33 and the vertical guide plate 20 cooperate with each other through the vertical groove 35 and the protrusion 34, which is conducive to improving the connection firmness between the two; and when the lifting tool is inserted into the lifting hole of the vertical plate 33 for lifting, the force applied by the lifting tool to the vertical plate 33 can be transmitted through the vertical guide plate 20, which is conducive to avoiding stress concentration. In one embodiment, a horizontal rib plate 37 is provided in one or more compartments 13 near the connecting part 11 of the mother box 10, and the horizontal rib plate 37 is connected to the inner wall of the compartment 13, which is conducive to enhancing the structural strength of the mother box 10 and ensuring that the gravity of the sub-box 40 in each compartment 13 is stably and reliably transmitted to the platform 70 of the electric shovel.

[0070] In one embodiment, the outer frame 31 and the inner connecting plate 32 are an integral structure, which is conducive to ensuring the structural strength of the top frame 30 and the mother box 10. Specifically, the top frame 30 can be manufactured by casting, forging or machining. The top frame 30 and the top of the outer box can be connected by welding.

[0071] In one embodiment, the bottom wall of the main box 10 is provided with a bottom drainage hole to prevent water or ice from accumulating in the main box 10, thereby preventing the sub-box 40 from being frozen due to ice formation, and ensuring that the sub-box 40 can be smoothly taken out and installed in cold weather. Preferably, the bottom wall of each compartment 13 is respectively provided with a bottom drainage hole.

[0072] In one embodiment, the lifting member includes a lifting lug 41, such as Figure 11-Figure 15As shown, the sub-box body 40 includes a sub-box side wall 42 and a sub-box top cover 43, and the lifting lug 41 is arranged on the inner wall of the sub-box side wall 42 and extends into the sub-box body 40, and the connection between the lifting lug 41 and the sub-box side wall 42 is located in the sub-box body 40, and the lifting lug 41 partially extends to the outside of the sub-box top cover 43. The sub-box top cover 43 protects the loaded counterweight ball to prevent it from sliding out; the lifting lug 41 extends inward to avoid interference with the outer space of the sub-box body 40, so as to facilitate the smooth loading of the sub-box body 40 into the compartment 13.

[0073] Furthermore, the sub-box top cover 43 includes a fixed cover plate 44 and a movable cover plate 45. The fixed cover plate 44 is fixed to the sub-box side wall 42. The fixed cover plate 44 is provided with at least one counterweight ball adding port. The movable cover plate 45 is connected to the counterweight ball adding port. The counterweight ball can be loaded into the sub-box body 40 through the counterweight ball adding port. The weight of the counterweight ball in each sub-box body 40 can be flexibly adjusted to ensure that the center of gravity of the entire electric shovel is in the most reasonable position.

[0074] In one embodiment, a vertical connecting plate 50 is provided in the sub-box 40, and the vertical connecting plate 50 is fixedly connected to the inner wall of the sub-box side wall 42, and the vertical connecting plate 50 is provided with a connecting hole 51 for the ballast ball to pass through. The vertical connecting plate 50 can enhance the structural strength of the sub-box 40, and prevent the side wall of the sub-box 40 from being deformed, so that the shape of the sub-box 40 when loaded with the ballast ball is guaranteed to be stable and the deformation is reduced, so that the shape of the sub-box 40 is adapted to the compartment 13, and it is easy to load and remove.

[0075] In one embodiment, if Fig.14 and Fig.15 As shown, the sub-box 40 includes a cable tube 60; the sub-box side wall 42 and the sub-box top cover 43 are respectively provided with through holes 431, and the cable tube 60 is at least partially provided in the sub-box 40, and the ends of the cable tube 60 are respectively connected to the through holes 431 of the sub-box side wall 42 and the through holes 431 of the sub-box top cover 43, and the cable can be passed through the cable tube 60 and can extend from the outside of the sub-box side wall 42 to the inside of the sub-box 40 and then to the outside of the sub-box top cover 43. The cables arranged to the rear side of the electric shovel can be passed through the cable tube 60 and pass through the top of the electric shovel counterweight system, which can provide better protection for the cables and ensure the safety of the high-voltage cables, and can make full use of the space and facilitate the arrangement of the cables. Specifically, part of the sub-box 40 is provided with the cable tube 60, and preferably, the electric shovel counterweight system is installed on the rear side of the electric shovel, and the sub-box side wall 42 provided with the through hole 431 faces the front of the electric shovel.

[0076] In one embodiment, if Fig.15 and Fig.16As shown, the side wall of the mother box 10 is provided with a connection part 11 for connecting to the platform 70 of the electric shovel, and the mother box 10 can be suspended and connected to the platform 70 of the electric shovel through the connection part 11. The electric shovel counterweight system is connected to the platform 70 of the electric shovel in a suspended manner and provides counterweight. Specifically, the connection part 11 includes a connection hole provided on the side wall of the mother box 10, and the bolts passing through the connection hole are connected to the electric shovel platform 70, so as to fasten the mother box 10 and the platform 70 together.

[0077] The electric shovel counterweight system provided by the utility model can be used as an electric shovel counterweight box. Based on the distributed concept, a "parent-child" counterweight box is realized. The counterweight ball is loaded in the sub-box 40 and placed in the main box 10, which solves the disadvantages of the original counterweight box, such as inconvenient installation, uncontrollable counterweight weight, and various safety hazards. The main box 10 is provided with a plurality of compartments 13, and a vertical guide plate 20 is provided in the compartment 13, which can prevent the sub-box 40 from sliding and colliding in the compartment 13, and can guide the sub-box 40 to be smoothly installed in place during hoisting.

[0078] In the electric shovel counterweight system provided by the utility model, the counterweight ball can be a round counterweight ball, or iron filings, iron blocks, etc. The shape and size of the mother box 10, the shape of the mother box movable top cover 36, the number and shape of the compartments 13, the structure and limit mode of the sub-box 40, the shape and number of the sub-box 40, the specifications of the sub-box 40, etc. can be designed according to actual conditions.

[0079] The above are only several embodiments of the present invention. Those skilled in the art can make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. An electric shovel counterweight system, characterized in that: include: A main box, a main box movable top cover and a plurality of sub-boxes, wherein the main box has a main box cavity for accommodating a plurality of the sub-boxes, the sub-boxes are used to accommodate a counterweight ball, and the sub-boxes are provided with a hoisting piece; A plurality of intersecting vertical partitions are arranged in the mother box cavity, and the vertical partitions divide the mother box cavity into a plurality of compartments, and the sub-boxes can be arranged in the compartments; the mother box movable top cover can be arranged on the top of the mother box body to cover the top opening of the mother box cavity; The compartment has a plurality of vertical guide plates which are distributed at circumferential intervals along the compartment. The vertical guide plates are arranged on the side walls of the vertical partitions and protrude from the side walls of the vertical partitions into the compartment. The sub-box can move from the top opening of the mother box along the vertical guide plates into the compartment.

2. The electric shovel counterweight system according to claim 1, characterized in that: The top surface of the mother box is connected to a top frame, which includes an outer frame and an inner connecting plate arranged on the top surface of the vertical partition, and along the thickness direction of the vertical partition, the inner connecting plate extends into the compartment, and the vertical guide plate exceeds the edge of the inner connecting plate in a direction pointing into the compartment.

3. The electric shovel counterweight system according to claim 2, characterized in that: Each of the compartments is respectively provided with the mother box movable top cover, and the mother box movable top cover is at least partially located in the space surrounded by the inner connecting plates, and the bottom surface of the mother box movable top cover is in contact with the top surface of the vertical guide plate.

4. The electric shovel counterweight system according to claim 2, characterized in that: The top of each of the vertical guide plates is in contact with the top frame, and a preset distance is provided between the bottom of the vertical guide plate and the bottom surface of the compartment.

5. The electric shovel counterweight system according to claim 4, characterized in that: The side walls of at least two of the vertical partitions are provided with vertical plates, which are attached to the side walls of the vertical partitions and connected to the bottom of the vertical guide plates; the vertical plates and the side walls of the vertical partitions on which the vertical plates are provided are provided with penetrating lifting holes.

6. The electric shovel counterweight system according to claim 5, characterized in that: The vertical plate has a protrusion and at least two vertical grooves, the vertical guide plate extends into the vertical groove, and the protrusion extends vertically and is located between two adjacent vertical guide plates.

7. The electric shovel counterweight system according to claim 2, characterized in that: The outer frame and the inner connecting plate are an integral structure.

8. The electric shovel counterweight system according to claim 1, characterized in that: The bottom wall of the mother box is provided with a bottom drainage hole.

9. The electric shovel counterweight system according to claim 1, characterized in that: The lifting member includes a lifting lug; The sub-box body includes a sub-box side wall and a sub-box top cover, the lifting ear is arranged on the inner wall of the sub-box side wall and extends into the sub-box body, and the connection between the lifting ear and the sub-box side wall is located in the sub-box body, and the lifting ear part extends to the outside of the sub-box top cover.

10. The electric shovel counterweight system according to claim 9, characterized in that: The sub-box top cover includes a fixed cover plate and a movable cover plate, wherein the fixed cover plate is fixed to the sub-box side wall, the fixed cover plate is provided with at least one counterweight ball adding port, and the movable cover plate is connected to the counterweight ball adding port.

11. The electric shovel counterweight system according to claim 9, characterized in that: A vertical connection plate is arranged in the sub-box body, the vertical connection plate is fixedly connected to the inner wall of the sub-box side wall, and the vertical connection plate is provided with a connecting hole for the counterweight ball to pass through.

12. The electric shovel counterweight system according to claim 9, characterized in that: The sub-box includes a cable tube; The sub-box side wall and the sub-box top cover are respectively provided with through holes, The cable tube is at least partially disposed within the sub-box, and ends of the cable tube are respectively connected to the through holes of the sub-box side wall and the through holes of the sub-box top cover. Cables can be passed through the cable tube and can extend from outside the sub-box side wall into the sub-box and then to outside the sub-box top cover.

13. The electric shovel counterweight system according to claim 1, characterized in that: The side wall of the mother box is provided with a connecting portion for connecting to the platform of the electric shovel, and the mother box can be suspended and connected to the platform of the electric shovel through the connecting portion.

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