A new counterweight
By designing a new type of counterweight, the position of the fixed block is adjusted by using a handle to drive the worm gear and worm wheel, which solves the problem that traditional counterweights cannot dynamically adapt, thus achieving inertial balance of the gearbox and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI GONGFU IND CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-06-23
AI Technical Summary
Traditional counterweights cannot dynamically adapt, causing the gearbox to shift due to inertial force when gears wear, load changes, or parts are replaced. This results in ineffective adjustment, shortened equipment lifespan, and high maintenance costs.
A novel counterweight is designed that, by holding the handle, drives the worm gear, worm wheel, and threaded rod to adjust the positions of the first and second fixed blocks, achieving precise balance of inertial forces. The self-locking property of the worm gear ensures stable positioning.
The system enables dynamic adjustment of the counterweight system, extends the service life of the gearbox, and improves the operational stability and maintenance efficiency of the equipment.
Smart Images

Figure CN224397067U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of counterweight technology, and in particular to a novel counterweight. Background Technology
[0002] As a core component of power transmission, the gearbox's internal rotating parts are prone to centrifugal inertial forces due to uneven mass distribution during high-speed operation. Prolonged imbalance can lead to problems such as abnormal gear meshing noise, abnormal bearing wear, and gearbox resonance, severely shortening the equipment's lifespan. Therefore, counterweight balancing technology is widely used in gearbox design to optimize dynamic stability.
[0003] Traditional counterweights are mostly fixed in place (e.g., by welding or bolting), and their weight distribution and installation position cannot be adjusted after assembly. When the gearbox shifts due to gear wear, changes in load conditions, or component replacement, the original counterweight system cannot adapt dynamically and must be disassembled and reassembled to rebalance, resulting in low operating efficiency and high maintenance costs. To solve the above problems, this application proposes a new type of counterweight. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a novel counterweight block. By holding the handle, the positions of the first and second fixed blocks can be adjusted, thereby adjusting the counterweight system, balancing inertia, extending the service life of the gearbox, and ensuring stability after the two fixed blocks are adjusted through the self-locking property of the worm gear.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A novel counterweight includes a ring, with a connecting shaft coaxially fixed to the bottom of the ring. A first fixing block and a second fixing block are provided on one side of the ring. A first groove is provided on the top of the second fixing block, a second groove is provided on the bottom of the second fixing block, and a third groove is provided on the bottom of the first fixing block. A connecting component is provided between the outer wall of the ring and the first fixing block and the second fixing block.
[0007] Preferably, the connecting assembly includes two connecting plates fixedly connected to the outer wall of the ring, wherein the end of one connecting plate is fixedly connected to a first fixing block, and the end of the other connecting plate is fixedly connected to a second fixing block.
[0008] Preferably, the connecting assembly includes a hollow column fixedly connected to the outer wall of the ring, a sliding column slidably connected thereto through the hollow column, a worm gear rotatably connected thereto through the hollow column, a handle fixedly connected to the top of the worm gear, the worm gear meshing with a worm wheel, a threaded rod coaxially fixedly connected thereto through the worm wheel, the threaded rod rotatably connected to the inner wall of the hollow column, and the threaded rod threadedly connected to the sliding column.
[0009] Preferably, the end of one of the sliding columns is fixedly connected to the side wall of the first fixed block, and the end of the other sliding column is fixedly connected to the side wall of the second fixed block.
[0010] Preferably, an anti-detachment block is fixedly connected to the outer wall of the sliding column. The anti-detachment block is located inside the hollow column and is slidably connected to its inner wall. The cross-section of the anti-detachment block is rectangular.
[0011] Preferably, the outer wall of the threaded rod is provided with an external thread, the sliding column is provided with a groove, and the inner wall of the groove is provided with an internal thread that mates with the external thread.
[0012] Compared with the prior art, the advantages of this utility model are as follows:
[0013] 1. This device is installed inside the gearbox. It can accurately distribute weight to counteract the unbalanced inertial forces of rotating components such as gears and shafts, ensuring smooth operation of the transmission system.
[0014] 2. The operator can hold the handle and rotate it to drive the worm gear, worm wheel, and threaded rod to rotate, so that the anti-detachment block and sliding column slide inside the hollow column. The movement of the sliding column can drive the first fixed block and the second fixed block to move, thereby adjusting the distance between the first fixed block, the second fixed block and the ring, which can meet different usage needs.
[0015] In summary, by holding the handle, the positions of the first and second fixed blocks can be adjusted, thereby adjusting the counterweight system, balancing inertia, extending the service life of the gearbox, and ensuring the stability of the two fixed blocks after adjustment through the self-locking property of the worm gear. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the first structure of a novel counterweight proposed in Example 1;
[0017] Figure 2 This is a schematic diagram of the second structure of a novel counterweight proposed in Example 1;
[0018] Figure 3 This is a schematic diagram of the third structure of a novel counterweight proposed in Example 1;
[0019] Figure 4 This is a schematic diagram of the structure of a novel counterweight proposed in Example 2;
[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of a novel counterweight block proposed in Example 2.
[0021] In the diagram: 1. Ring, 2. Connecting shaft, 3. Connecting plate, 4. First fixing block, 5. Second fixing block, 6. First groove, 7. Second groove, 8. Third groove, 9. Hollow column, 10. Sliding column, 11. Worm gear, 12. Handle, 13. Worm wheel, 14. Threaded rod, 15. Anti-detachment block. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0023] Example 1
[0024] Reference Figures 1-3 A novel counterweight includes a ring 1, with a connecting shaft 2 coaxially fixed to the bottom of the ring 1. A first fixing block 4 and a second fixing block 5 are provided on one side of the ring 1. A first groove 6 is provided on the top of the second fixing block 5, and a second groove 7 is provided on the bottom of the second fixing block 5. A third groove 8 is provided on the bottom of the first fixing block 4. A connecting assembly is provided between the outer wall of the ring 1 and the first fixing block 4 and the second fixing block 5. The connecting assembly includes two connecting plates 3 fixedly connected to the outer wall of the ring 1. The end of one connecting plate 3 is fixedly connected to the first fixing block 4, and the end of the other connecting plate 3 is fixedly connected to the second fixing block 5.
[0025] To further explain, this device is installed inside the gearbox. It can precisely distribute weight to counteract the unbalanced inertial forces of rotating components such as gears and shafts, ensuring smooth operation of the transmission system.
[0026] Example 2
[0027] Reference Figures 4-5 The difference between this embodiment and embodiment 1 is that the connecting component in this embodiment includes a hollow column 9 fixedly connected to the outer wall of the ring 1. A sliding column 10 is slidably connected to the hollow column 9. The end of one sliding column 10 is fixedly connected to the side wall of the first fixing block 4, and the end of the other sliding column 10 is fixedly connected to the side wall of the second fixing block 5. An anti-detachment block 15 is fixedly connected to the outer wall of the sliding column 10. The anti-detachment block 15 is located inside the hollow column 9 and slidably connected to its inner wall. The cross-section of the anti-detachment block 15 is rectangular, which allows the sliding column 10 to slide inside the hollow column 9.
[0028] A worm gear 11 is rotatably connected to a hollow column 9. A handle 12 is fixedly connected to the top of the worm gear 11. The worm gear 11 meshes with a worm wheel 13. A threaded rod 14 is rotatably connected to the worm wheel 13 and is coaxially fixedly connected to it. The threaded rod 14 is rotatably connected to the inner wall of the hollow column 9 and is threadedly connected to the sliding column 10. The outer wall of the threaded rod 14 is provided with external threads. The sliding column 10 is provided with a groove. The inner wall of the groove is provided with internal threads that cooperate with the external threads. The positions of the first fixed block 4 and the second fixed block 5 can be adjusted through the provided connecting components to meet different usage needs.
[0029] In this utility model, the operator can hold the handle 12 and rotate it to drive the worm gear 11, worm wheel 13, and threaded rod 14 to rotate, so that the anti-detachment block 15 and sliding column 10 slide inside the hollow column 9. The movement of the sliding column 10 can drive the first fixed block 4 and the second fixed block 5 to move, thereby adjusting the distance between the first fixed block 4 and the second fixed block 5 and the ring 1, which can meet different usage needs.
Claims
1. A novel counterweight, comprising a ring (1), characterized in that, The bottom of the ring (1) is coaxially fixedly connected to a connecting shaft (2). A first fixing block (4) and a second fixing block (5) are provided on one side of the ring (1). A first groove (6) is provided on the top of the second fixing block (5), a second groove (7) is provided on the bottom of the second fixing block (5), and a third groove (8) is provided on the bottom of the first fixing block (4). A connecting component is provided between the outer wall of the ring (1) and the first fixing block (4) and the second fixing block (5). The connecting assembly includes two connecting plates (3) fixedly connected to the outer wall of the ring (1), one end of which is fixedly connected to a first fixing block (4), and the other end of which is fixedly connected to a second fixing block (5).
2. The novel counterweight according to claim 1, characterized in that, The connecting assembly includes a hollow column (9) fixedly connected to the outer wall of the ring (1), a sliding column (10) slidably connected to the hollow column (9), a worm (11) rotatably connected to the hollow column (9), a handle (12) fixedly connected to the top of the worm (11), a worm wheel (13) meshing with the worm (11), a threaded rod (14) coaxially fixedly connected to the worm wheel (13), the threaded rod (14) rotatably connected to the inner wall of the hollow column (9), and the threaded rod (14) threadedly connected to the sliding column (10).
3. The novel counterweight according to claim 2, characterized in that, One of the sliding columns (10) is fixedly connected to the side wall of the first fixed block (4), and the other sliding column (10) is fixedly connected to the side wall of the second fixed block (5).
4. A novel counterweight according to claim 2, characterized in that, The outer wall of the sliding column (10) is fixedly connected to an anti-detachment block (15). The anti-detachment block (15) is located inside the hollow column (9) and is slidably connected to its inner wall. The cross-section of the anti-detachment block (15) is rectangular.
5. A novel counterweight according to claim 2, characterized in that, The outer wall of the threaded rod (14) is provided with an external thread, and the sliding column (10) is provided with a groove, the inner wall of the groove being provided with an internal thread that mates with the external thread.