Counterweight structure of excavator

Abstract

The excavator balance weight structure comprises a center plate in a concave character shape, rectangular side plates are fixedly connected to the end walls of the two sides of the center plate, the side plates are symmetrical about the center of the center plate and form a center groove in an enclosing mode, a large balance weight block is arranged in the center groove, a balance weight cavity is formed in the upper end wall of the large balance weight block, and the balance weight cavity is communicated with the center plate. And two groups of weight stacks are arranged in the weight balancing cavity, and seven weight stacks are arranged in each group. The balance weight structure of the excavator has the beneficial effects that the number of the balance weight sheets in the large balance weight block can be changed, so that the weight of the whole balance weight is changed, the balance weight of the excavator is changed, and the balance weight structure of the excavator is suitable for different machining environments such as inclined machining road surfaces, different machining requirements and buckets of different sizes.

Description

Technical Field

[0001] The invention relates to the technical field of heater devices, in particular to a counterweight structure for an excavator. Background Art

[0002] An excavator, also known as a backhoe, is an earth-moving machine that uses a bucket to dig materials above or below the supporting surface and load them into transport vehicles or unload them to a stockpile yard. A counterweight structure is configured on the excavator to increase the gravity on the end side of the excavator to prevent the excavator from becoming unbalanced.

[0003] Conventional counterweights are loaded together as a whole and are fixed weights, installed on the end wall of the excavator, such as on one side of the excavator chassis. Since the excavator bucket will be switched according to the environment, buckets of different sizes will be replaced. At the same time, the working environment of the excavator is different. When the excavator is in a state of large imbalance, a heavier counterweight structure is required to balance the excavator. Conversely, a smaller counterweight structure is required to balance the excavator. However, the weight of the conventional counterweight structure is fixed, and it is not convenient to switch the counterweight without having to take it out for replacement. Summary of the invention

[0004] The object of the present invention is to provide an excavator counterweight structure to solve the problem proposed in the above background technology that the conventional counterweight blocks are loaded together in an integrated manner and are fixed weights and are installed on the end wall of the excavator, such as on one side of the excavator chassis. Since the bucket of the excavator will be switched according to the environment, buckets of different sizes will be replaced. At the same time, the working environment of the excavator is different. When the excavator is in a state of large imbalance, a heavier counterweight structure is required to balance the excavator. Conversely, a smaller counterweight structure is required to balance the excavator. However, the conventional counterweight structure has a fixed weight and does not need to be taken out for replacement, which makes it inconvenient to switch the counterweight.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an excavator counterweight structure, comprising a concave font-shaped center plate, rectangular side plates are fixedly connected to the end walls on both sides of the center plate, the side plates are symmetrical about the center of the center plate and surround a center groove, a large counterweight block is placed in the center groove, a counterweight cavity is opened in the upper end wall of the large counterweight block, and counterweight plates are installed in the counterweight cavity, and the counterweight plates are arranged in two groups, each group is provided with seven.

[0006] Preferably, a screw hole is opened at the end wall of the side plate, and the number of the screw holes is twice the number of the side plates. Two side plates are provided, and a bolt is installed in the screw hole of one side plate, and a nut threadedly connected to the bolt is installed in the screw hole of the other side plate.

[0007] Preferably, the large counterweight block is relatively fixedly connected with fixed columns near the two end walls in the counterweight cavity, and column holes for bolts to penetrate are installed in the fixed columns, and two bolts are provided.

[0008] Preferably, the counterweight plate is in the shape of a rectangular plate, and a pair of symmetrical core-fixing holes vertically penetrate through the end wall of the counterweight plate.

[0009] Preferably, a lower hole is relatively opened at the bottom end wall of the large counterweight block, and a screw threadedly connected to the lower hole is threadedly connected to the lower hole, and four lower holes and four screw threads are provided.

[0010] Preferably, a stud is fixedly connected to the top wall of the stud, and the stud is threadedly connected to the core-fixing hole, and the same counterweight plate is positioned on the large counterweight block via two studs.

[0011] Preferably, a center seat is vertically fixed to the end wall on one side of the bottom of the side panel away from the center panel, and side fixing seats are relatively vertically fixed to the front and rear end walls of the bottom of the side panel. The number of side fixing seats is twice the number of side panels, and the number of side panels is the same as the number of center seats.

[0012] Preferably, a rotating shaft is arranged at an end wall of one side of the side fixing seat close to the central seat, and a rectangular rotating plate is installed at the end side of the rotating shaft.

[0013] Preferably, threaded holes for inserting screw connectors are vertically penetrated through the end walls of the center seat and the side fixing seats, so that the center seat and the side fixing seats can be installed on the excavator.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The number of counterweight plates in the large counterweight block of the present invention can be changed, thereby changing the weight of the entire counterweight, so that the counterweight of the excavator can be changed to adapt to different processing environments, such as inclined processing road surfaces, and different processing requirements, such as buckets of different sizes.

[0016] 2. The center seat and the side fixing seat of the present invention are vertically penetrated with threaded holes for plugging in screw connectors at the end walls, so that the center seat and the side fixing seat can be installed on the excavator. The rotating shaft is used to rotate the rotating plate to change the position of the threaded holes at the rotating plate. The position of the threaded holes at the rotating plate is flexible and controllable, and can be adapted to the position of the preset holes on the excavator, which is more flexible in use. The threaded holes at the center seat and the side fixing seat are used for plugging in screw connectors and are assembled to the end wall of the chassis of the excavator to facilitate their assembly and docking.

[0017] 3. The large counterweight block of the present invention is tightened with a connecting screw, and the counterweight plate is connected to the stud fixed to the top wall of the screw, so as to complete the docking connection between the counterweight plate and the large counterweight block, wherein the depth of the lower hole at the large counterweight block is greater than the length of the screw, and the length of the stud is greater than six times the depth of the core hole at the counterweight plate, so that the stud can penetrate and connect seven counterweight plates at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a counterweight structure of an excavator according to the present invention;

[0019] Figure 2 This is a schematic diagram of a nut structure at a center plate of an excavator counterweight structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the bottom structure of a center plate of an excavator counterweight structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of a large counterweight block of an excavator counterweight structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of a counterweight plate of an excavator counterweight structure of the present invention;

[0023] Figure 6 The present invention is a schematic diagram of the structure of a counterweight plate and a large counterweight block of an excavator counterweight structure.

[0024] In the figure: 1. center plate; 2. side plate; 3. screw mouth; 4. nut; 5. bolt; 6. center seat; 7. side fixing seat; 8. rotating shaft; 9. rotating plate; 10. threaded hole; 11. center groove; 12. large counterweight block; 13. counterweight cavity; 14. fixed column; 15. column hole; 16. counterweight plate; 17. core fixing hole; 18. lower hole; 19. screw strip; 20. stud. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figure 1-6 The present invention provides a technical solution: a counterweight structure for an excavator, comprising a concave font-shaped center plate 1, rectangular side plates 2 are fixedly connected to the end walls on both sides of the center plate 1, the side plates 2 are symmetrical about the center of the center plate 1 and surround a center groove 11, a large counterweight block 12 is arranged in the center groove 11, a counterweight cavity 13 is opened in the upper end wall of the large counterweight block 12, counterweight plates 16 are installed in the counterweight cavity 13, and the counterweight plates 16 are provided in two groups, each group is provided with seven, the large counterweight block 12 and the counterweight plates 16 form a total counterweight for increasing the counterweight of the excavator, wherein the counterweight plates 16 in the large counterweight block 12 can be replaced in number, thereby changing the weight of the entire counterweight, so that the counterweight of the excavator is changed, thereby adapting to different processing environments, such as inclined processing road surfaces, different processing requirements, such as buckets of different sizes.

[0029] A screw hole 3 is provided at the end wall of the side plate 2, and the number of the screw holes 3 is twice the number of the side plates 2. There are two side plates 2, and a bolt 5 is installed in the screw hole 3 of one side plate 2, and a nut 4 threadedly connected with the bolt 5 is installed in the screw hole 3 of the other side plate 2. The large counterweight block 12 is relatively fixedly connected with fixed columns 14 at both end walls near the counterweight cavity 13, and a column hole 15 for the bolt 5 to penetrate is installed in the fixed column 14. There are two bolts 5, and the bolt 5 is penetrated into the column hole 15 of one side plate 2 and comes out from the column hole 15 of the other side plate 2, and is tightened with the nut 4 to assemble and connect them;

[0030] The weight plate 16 is a rectangular sheet, and a pair of symmetrical centering holes 17 are vertically penetrated at the end wall of the weight plate 16. A lower hole 18 is relatively opened at the bottom end wall of the large weight block 12. The lower hole 18 is internally threaded with a screw 19 threadedly connected to the lower hole 18. There are four lower holes 18 and screws 19. The top wall of the stud 20 is fixed with a stud 20. The stud 20 is threadedly connected to the centering hole 17. The same weight plate 16 is threaded with two studs. 20 is positioned on the large counterweight block 12, the connecting screw 19 is tightened on the large counterweight block 12, and the stud 20 fixed to the top wall of the screw 19 is connected to the counterweight plate 16, so that the counterweight plate 16 and the large counterweight block 12 are butt-connected, wherein the depth of the lower hole 18 at the large counterweight block 12 is greater than the length of the screw 19, and the length of the stud 20 is greater than six times the depth of the core-fixing hole 17 at the counterweight plate 16, so that the stud 20 can penetrate and connect seven counterweight plates 16 at the same time;

[0031] A center seat 6 is vertically fixed to the end wall of one side away from the center plate 1 at the bottom of the side plate 2, and side fixing seats 7 are relatively vertically fixed to the end walls on the front and rear sides of the bottom of the side plate 2. The number of side fixing seats 7 is twice the number of side plates 2, and the number of side plates 2 is the same as the number of center seats 6. A rotating shaft 8 is arranged on the end wall of one side of the side fixing seat 7 close to the center seat 6, and a rectangular rotating plate 9 is installed on the end side of the rotating shaft 8. The end walls of the center seat 6 and the side fixing seat 7 are vertically penetrated with threaded holes 10 for plugging in screw connectors, so that the center seat 6 and the side fixing seat 7 can be installed on the excavator. The rotating shaft 8 is used to rotate the rotating plate 9 to change the position of the threaded hole 10 at the rotating plate 9. The position of the threaded hole 10 at the rotating plate 9 is flexibly controllable and can be adapted to the position of the preset hole on the excavator, which is more flexible when used. The threaded holes 10 at the center seat 6 and the side fixing seat 7 are used for plugging in screw connectors and are assembled to the end wall of the chassis of the excavator to facilitate their assembly and docking.

[0032] In summary, when the excavator counterweight structure is used,

[0033] The required number of weight plates 16 are placed in the weight cavity 13 of the large weight block 12, and then the screw 19 is facing downward, the stud 20 is screwed into the core hole 17, and the screw 19 is screwed into the lower hole 18, so that the large weight block 12 and the weight plates 16 are connected together to form a total weight;

[0034] The center plate 1 and the side plate 2 are surrounded and formed with a center groove 11, and the large counterweight block 12 is placed inside the center groove 11, and then two bolts 5 are inserted along the two screw holes 3 of one side plate 2 and pass out from the two screw holes 3 of the other side plate 2, and then the nuts 4 are screwed in for fixing, and the center plate 1 and the side plate 2 and the large counterweight block 12 are connected to form a pre-installed state;

[0035] Finally, the center plate 1 and the side plate 2 are placed on the end wall of the excavator, such as the end wall of the chassis, and the preset holes on the end wall of the excavator are aligned with the threaded holes 10 on the center seat 6 and the side fixing seat 7, and then the screw connectors are inserted to connect them. The rotating plate 9 at the rotating shaft 8 rotates to change the position of the threaded hole 10 on the rotating plate 9, which is used to flexibly adjust the position of the threaded hole 10, and it is more convenient to match and align with the preset holes on the end wall of the excavator, and the screw connectors are inserted to tighten the connection, completing the assembly connection between the entire counterweight structure and the excavator;

[0036] Among them, there are two groups of counterweight plates 16, each group has seven in total, which is convenient for selecting different numbers of counterweight plates 16 for use, changing the counterweight of the entire counterweight structure, changing the counterweight structure after the counterweight, and changing the counterweight balance of the excavator. It is used to adapt to different usage requirements, switch to an excavator with a large bucket, install more counterweight plates 16, increase the counterweight, and improve the front and rear side balance of the excavator when it is in use.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An excavator counterweight structure, comprising a center plate (1) in a concave font shape, characterized in that: Rectangular side plates (2) are fixedly connected to the end walls on both sides of the center plate (1); the side plates (2) are symmetrical about the center of the center plate (1) and surround a center groove (11); a large counterweight block (12) is arranged in the center groove (11); a counterweight cavity (13) is provided in the upper end wall of the large counterweight block (12); counterweight plates (16) are installed in the counterweight cavity (13); two groups of counterweight plates (16) are provided, each group having seven counterweight plates.

2. The excavator counterweight structure according to claim 1, characterized in that: The side plate (2) is provided with a screw hole (3) at the end wall, and the number of the screw holes (3) is twice the number of the side plates (2). Two side plates (2) are provided, and a bolt (5) is installed in the screw hole (3) at one of the side plates (2), and a nut (4) threadedly connected to the bolt (5) is installed in the screw hole (3) at the other side plate (2).

3. The excavator counterweight structure according to claim 2, characterized in that: The large counterweight block (12) is relatively fixedly connected with fixed columns (14) near the two end walls of the counterweight cavity (13). The fixed columns (14) are provided with column holes (15) for bolts (5) to penetrate. Two bolts (5) are provided.

4. The excavator counterweight structure according to claim 3, characterized in that: The counterweight plate (16) is in the shape of a rectangular plate, and a pair of symmetrical core-fixing holes (17) vertically penetrate the end wall of the counterweight plate (16).

5. The excavator counterweight structure according to claim 4, characterized in that: A lower hole (18) is relatively opened at the bottom end wall of the large counterweight block (12), and a screw thread (19) is internally threadedly connected to the lower hole (18), and four lower holes (18) and four screw threads (19) are provided.

6. The excavator counterweight structure according to claim 5, characterized in that: A stud (20) is fixedly connected to the top wall of the stud (20), and the stud (20) is threadedly connected to the core fixing hole (17). The same counterweight plate (16) is positioned on the large counterweight block (12) via two studs (20).

7. The excavator counterweight structure according to claim 1, characterized in that: A center seat (6) is vertically fixed to the end wall of one side of the bottom of the side plate (2) away from the center plate (1), and side fixing seats (7) are relatively vertically fixed to the front and rear end walls of the bottom of the side plate (2). The number of the side fixing seats (7) is twice the number of the side plates (2), and the number of the side plates (2) is the same as the number of the center seats (6).

8. The excavator counterweight structure according to claim 7, characterized in that: A rotating shaft (8) is arranged on the end wall of one side of the side fixing seat (7) close to the central seat (6), and a rectangular rotating plate (9) is installed on the end side of the rotating shaft (8).

9. The excavator counterweight structure according to claim 1, characterized in that: The end walls of the center seat (6) and the side fixing seat (7) are vertically penetrated with threaded holes (10) for inserting screw connectors, so that the center seat (6) and the side fixing seat (7) can be installed on the excavator.

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