Engineering machinery counterweight structure

Abstract

The utility model relates to the technical field of engineering machinery, in particular to an engineering machinery counterweight structure which comprises a frame, a top plate is fixedly installed on the top of the frame, installation bolts are arranged on the two sides of the top of the top plate, a limiting frame is fixedly installed at the bottom in the frame, and a plurality of limiting grooves are evenly formed in the limiting frame at equal intervals. According to the counterweight structure of the engineering machinery, through cooperative use of the frame, the top plate, the mounting bolts, the limiting frame, the limiting groove, the counterweight block, the toothed plate, the driving mechanism, the first guide rail, the grabbing mechanism, a hydraulic telescopic rod, a first motor, a guide block, a second rail and a threaded rod, the counterweight structure shows excellent autonomy and convenience in the running process. The assembling and disassembling operation of the balancing weight can be independently completed without assistance of external mechanical equipment. Due to the characteristic, the dependence on additional equipment is greatly reduced, and a complex equipment allocation and cooperation process is avoided.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, specifically to a counterweight structure for engineering machinery. Background Technology

[0002] In the actual operation of construction machinery, the counterweight structure plays an indispensable and crucial role. It balances the various torques generated during operation, ensuring the stability of the machinery under different working conditions. Taking excavators as an example, to guarantee the normal operation of the excavator, the design and layout of the excavator's counterweight must consider the excavator's stability and safety. Improper consideration of excavator stability and safety can lead to severe shaking or even overturning during excavation.

[0003] Chinese Patent No. CN216664302U discloses a counterweight structure for engineering machinery. It includes a top plate with a frame at the bottom. The frame is divided into several compartments, and each compartment contains a counterweight block in a detachable manner. When the counterweight block is placed in a compartment, a limiting plate is pressed between the counterweight block and the compartment, preventing the limiting plate from rotating and thus blocking the counterweight block in the compartment, preventing it from coming out. This achieves self-locking and eliminates the need for additional fixing structures.

[0004] The aforementioned technologies have some shortcomings. In actual use, the placement and removal of the counterweights require the assistance of external mechanical equipment. The counterweight structure itself does not have the function of independently disassembling and assembling the counterweights, which makes it inconvenient to use. Therefore, it is necessary to provide a counterweight structure for engineering machinery to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a counterweight structure for engineering machinery to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A counterweight structure for engineering machinery, comprising:

[0008] The frame has a top plate fixedly installed on its top, and mounting bolts are provided on both sides of the top of the top plate. A limit frame is fixedly installed at the bottom inside the frame. A number of limit grooves are evenly and equidistantly arranged on the limit frame. A counterweight is movably inserted into the limit groove. A first guide rail is fixedly installed on both sides of the top inside the frame. A guide block is slidably installed on the two first guide rails. A second track is fixedly installed at the bottom of the guide block.

[0009] The second track has a threaded rod rotatably mounted inside, and a movable block is sleeved on its outer wall. The movable block is slidably mounted on the second track. A hydraulic telescopic rod is fixedly mounted on the bottom of the movable block. A gripping mechanism is provided at the drive end of the hydraulic telescopic rod. A drive mechanism is provided at the top of the second track.

[0010] A first motor is fixedly installed at one end of the second track, and the drive end of the first motor passes through the second track and extends into the interior of the second track, where it is fixedly connected to one end of the threaded rod.

[0011] Preferably, the gripping mechanism includes a movable plate, which is fixedly installed on the drive end of the hydraulic telescopic rod. A fixed groove is provided at the bottom of the movable plate, and an adjusting screw is rotatably installed inside the fixed groove. The outer wall of the adjusting screw is provided with symmetrically distributed left-hand and right-hand threads. A symmetrically distributed adjusting block is sleeved on the outer wall of the adjusting screw, and the adjusting block is slidably installed on the fixed groove. A third motor is fixedly installed at one end of the movable plate, and the drive end of the third motor passes through the movable plate and extends into the interior of the fixed groove and is fixedly connected to one end of the adjusting screw. Clamping plates are fixedly installed at the bottom of the two adjusting blocks, and gripping blocks are fixedly installed below the opposite sides of the two clamping plates. Positioning grooves are provided above both sides of the counterweight, and the positioning grooves are adapted to the gripping blocks.

[0012] Preferably, the adjusting block has a threaded hole that matches the adjusting screw, and the adjusting block is threadedly connected to the adjusting screw through the threaded hole.

[0013] Preferably, the driving mechanism includes a second motor, which is fixedly mounted on the top of the second track. A gear is fixedly mounted on the driving end of the second motor, and a toothed plate is fixedly mounted on the top inside the frame, with the toothed plate meshing with the gear.

[0014] Preferably, the guide block has a T-shaped structure and is adapted to the first guide rail.

[0015] Preferably, the movable block has a threaded hole that matches the threaded rod, and the movable block is threadedly connected to the threaded rod through the threaded hole.

[0016] Compared with existing technologies, the beneficial effects of this utility model are:

[0017] This utility model, through the coordinated use of a frame, top plate, mounting bolts, limiting frame, limiting groove, counterweight, toothed plate, drive mechanism, first guide rail, gripping mechanism, hydraulic telescopic rod, first motor, guide block, second rail, and threaded rod, exhibits excellent autonomy and convenience during operation. It can independently complete the installation and removal of the counterweight without the assistance of external mechanical equipment. This feature greatly reduces reliance on additional equipment and avoids complex equipment allocation and coordination processes. Whether adding or removing weight, operators can easily control and quickly complete the installation and removal of the counterweight. This not only improves work efficiency but also reduces labor and material costs, effectively enhancing the convenience and practicality of this counterweight structure in real-world applications. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a frontal sectional view of the present invention.

[0020] Figure 3 This is a schematic diagram of the connection structure between the gear plate and the gear in this utility model;

[0021] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Frame; 2. Top plate; 3. Mounting bolt; 4. Limiting frame; 5. Limiting groove; 6. Counterweight; 7. Gear plate; 8. First guide rail; 9. Movable plate; 10. Hydraulic telescopic rod; 11. Clamping plate; 12. First motor; 13. Second motor; 14. Gear; 15. Guide block; 16. Second track; 17. Threaded rod; 18. Fixing groove; 19. Third motor; 20. Positioning groove; 21. Gripping block; 22. Adjusting block; 23. Adjusting screw; 24. Movable block. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-4 One embodiment provided by this utility model:

[0028] A counterweight structure for engineering machinery, comprising:

[0029] A frame 1 is provided. A top plate 2 is fixedly installed on the top of the frame 1. Mounting bolts 3 are provided on both sides of the top of the top of the top plate 2. A limit frame 4 is fixedly installed at the bottom inside the frame 1. Several limit grooves 5 are evenly and equidistantly arranged on the limit frame 4. A counterweight 6 is movably inserted into the limit groove 5. A first guide rail 8 is fixedly installed on both sides of the top inside the frame 1. A guide block 15 is slidably installed on the two first guide rails 8. A second track 16 is fixedly installed at the bottom of the guide block 15.

[0030] The second track 16 has a threaded rod 17 rotatably mounted inside, and a movable block 24 is sleeved on its outer wall. The movable block 24 is slidably mounted on the second track 16. A hydraulic telescopic rod 10 is fixedly mounted at the bottom of the movable block 24. A gripping mechanism is provided at the drive end of the hydraulic telescopic rod 10. A drive mechanism is provided at the top of the second track 16.

[0031] The first motor 12 is fixedly installed at one end of the second track 16, and the drive end of the first motor 12 passes through the second track 16 and extends into the interior of the second track 16 to be fixedly connected to one end of the threaded rod 17.

[0032] The gripping mechanism includes a movable plate 9, which is fixedly installed on the drive end of the hydraulic telescopic rod 10. A fixed groove 18 is provided at the bottom of the movable plate 9. An adjusting screw 23 is rotatably installed inside the fixed groove 18. The outer wall of the adjusting screw 23 is provided with symmetrically distributed left-hand and right-hand threads. A symmetrically distributed adjusting block 22 is sleeved on the outer wall of the adjusting screw 23, and the adjusting block 22 is slidably installed on the fixed groove 18. A third motor 19 is fixedly installed at one end of the movable plate 9, and the drive end of the third motor 19 passes through the movable plate 9 and extends into the interior of the fixed groove 18 and is fixedly connected to one end of the adjusting screw 23. A clamping plate 11 is fixedly installed at the bottom of each of the two adjusting blocks 22. A gripping block 21 is fixedly installed below each of the opposite sides of the two clamping plates 11. A positioning groove 20 is provided above both sides of the counterweight 6, and the positioning groove 20 is adapted to the gripping block 21. The gripping mechanism can efficiently and accurately complete the gripping, fixing, and unloading operations of the counterweight 6.

[0033] In one embodiment, the adjusting block 22 has a threaded hole that matches the adjusting screw 23, and the adjusting block 22 is threadedly connected to the adjusting screw 23 through the threaded hole.

[0034] In one preferred embodiment, the drive mechanism includes a second motor 13, which is fixedly mounted on the top of the second track 16. A gear 14 is fixedly mounted on the drive end of the second motor 13. A toothed plate 7 is fixedly mounted on the top inside the frame 1, and the toothed plate 7 meshes with the gear 14. This can stably convert the rotational motion of the second motor 13 into the longitudinal linear motion of the second track 16, ensuring precise and efficient transmission and accurate movement of the counterweight 6 during loading and unloading.

[0035] In one embodiment, the guide block 15 is T-shaped and is adapted to the first guide rail 8, which can enhance the stability of movement, prevent the guide block 15 from derailing, and ensure smooth longitudinal movement of the second track 16.

[0036] In one preferred embodiment, the movable block 24 has a threaded hole adapted to the threaded rod 17, and the movable block 24 is threadedly connected to the threaded rod 17 through the threaded hole.

[0037] The working principle of this utility model is as follows: The entire device is controlled by a main control button. Since the equipment matched with the control button is common equipment and belongs to existing common knowledge technology, its electrical connection relationship and specific circuit structure will not be described in detail here. The parts of this device not mentioned are the same as existing technology or can be implemented using existing technology. In use, this counterweight structure uses the cooperation of the top plate 2 and the mounting bolts 3 to install the entire device in the designated position of the engineering machinery. When weight reduction is required, the first motor 12 is started first, and its drive end drives the threaded rod 17 to rotate. With the threaded transmission between the threaded rod 17 and the movable block 24, and the sliding guidance between the movable block 24 and the second track 16, the movable block 24 moves smoothly laterally, thereby driving the hydraulic telescopic rod 10 and the gripping mechanism to move laterally above the counterweight block 6 to be unloaded. Subsequently, the drive end of the hydraulic telescopic rod 10 is controlled to make the gripping mechanism move vertically, placing the upper end of the counterweight block 6 between the two clamping plates 11. Simultaneously, the third motor 19 is activated, and its drive end rotates the adjusting screw 23. Utilizing the thread transmission between the left-hand and right-hand threads on the adjusting screw 23, and the sliding engagement between the adjusting block 22 and the fixed groove 18 on the movable plate 9, the two adjusting blocks 22 move stably relative to or in opposite directions. This causes the clamping plate 11 and the gripping block 21 to move, allowing the two clamping plates 11 to move relative to each other and clamp onto both sides of the counterweight 6. The gripping block 21 then engages with the positioning groove 20 on the counterweight 6, achieving reliable clamping and fixing of the counterweight 6 by the gripping mechanism. Next, driven by the hydraulic telescopic rod 10, the clamped counterweight 6 is moved upwards and disengaged from the limiting groove 5. Then, the second motor 13 is started, and its drive end drives the gear 14 to rotate. Through the meshing transmission between the gear 14 and the toothed plate 7, the second track 16 is driven to move longitudinally. When the second track 16 moves, the guide block 15 slides on the first guide rail 8, which simultaneously drives the movable block 24, the hydraulic telescopic rod 10, and the gripping mechanism to move longitudinally, removing the clamped counterweight 6 from inside the frame 1 and unloading it in front of the opening on the front of the frame 1, thus completing the weight reduction operation. Conversely, when adding weight, the counterweight 6 located outside the frame 1 is hoisted into the limiting groove 5 of the limiting frame 4, thus completing the weight addition operation. During operation, this counterweight structure can autonomously complete the installation and removal of the counterweight 6 without relying on external mechanical equipment, effectively improving its ease of use and practicality.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A counterweight structure for engineering machinery, characterized in that, It includes: A frame (1) is fixedly installed on the top of the frame (1). A top plate (2) is fixedly installed on both sides of the top of the top plate (2). A limit frame (4) is fixedly installed at the bottom inside the frame (1). A number of limit grooves (5) are evenly and equidistantly arranged on the limit frame (4). A counterweight (6) is movably inserted into the limit groove (5). A first guide rail (8) is fixedly installed on both sides of the top inside the frame (1). A guide block (15) is slidably installed on the two first guide rails (8). A second track (16) is fixedly installed at the bottom of the guide block (15). The second track (16) is rotatably mounted with a threaded rod (17), and a movable block (24) is sleeved on its outer wall. The movable block (24) is slidably mounted on the second track (16). A hydraulic telescopic rod (10) is fixedly mounted on the bottom of the movable block (24). A gripping mechanism is provided at the driving end of the hydraulic telescopic rod (10). A driving mechanism is provided at the top of the second track (16). The first motor (12) is fixedly installed at one end of the second track (16), and the driving end of the first motor (12) passes through the second track (16) and extends into the interior of the second track (16) and is fixedly connected to one end of the threaded rod (17).

2. The counterweight structure for engineering machinery according to claim 1, characterized in that: The gripping mechanism includes a movable plate (9), which is fixedly mounted on the drive end of the hydraulic telescopic rod (10). A fixed groove (18) is provided at the bottom of the movable plate (9). An adjusting screw (23) is rotatably mounted inside the fixed groove (18). Symmetrically distributed left-hand and right-hand threads are provided on the outer wall of the adjusting screw (23). Symmetrically distributed adjusting blocks (22) are sleeved on the outer wall of the adjusting screw (23), and the adjusting blocks (22) are slidably mounted on the fixed groove (18). A third motor (19) is fixedly installed at one end of the movable plate (9), and the drive end of the third motor (19) passes through the movable plate (9) and extends into the interior of the fixed groove (18) and is fixedly connected to one end of the adjusting screw (23). A clamping plate (11) is fixedly installed at the bottom of the two adjusting blocks (22), and a gripping block (21) is fixedly installed on the lower side of the two clamping plates (11). A positioning groove (20) is opened on the upper side of both sides of the counterweight block (6), and the positioning groove (20) is adapted to the gripping block (21).

3. The counterweight structure for engineering machinery according to claim 2, characterized in that: The adjusting block (22) has a threaded hole that matches the adjusting screw (23), and the adjusting block (22) is threadedly connected to the adjusting screw (23) through the threaded hole.

4. The counterweight structure for engineering machinery according to claim 1, characterized in that: The driving mechanism includes a second motor (13), and the second motor (13) is fixedly installed on the top of the second track (16). A gear (14) is fixedly installed on the driving end of the second motor (13). A toothed plate (7) is fixedly installed on the top inside the frame (1), and the toothed plate (7) meshes with the gear (14).

5. The counterweight structure for engineering machinery according to claim 1, characterized in that: The guide block (15) is T-shaped and is adapted to the first guide rail (8).

6. The counterweight structure for engineering machinery according to claim 1, characterized in that: The movable block (24) has a threaded hole that matches the threaded rod (17), and the movable block (24) is threadedly connected to the threaded rod (17) through the threaded hole.

Images