A compact anti-loose and anti-impact reduction gear with medium-hard tooth surface for a crane

Abstract

The application discloses a compact anti-loosening and anti-impact middle-hardened gear face speed reducer for a crane, and relates to the technical field of cranes.The speed reducer body is provided with two end cover bodies on the front surface and the rear surface through bolts.The press plate pushes the adjusting rod and the limiting ratchet to move, the locking block is inserted into the inlet slot, the rotating assembly is screwed, the auxiliary locking assembly is rotated, the anti-impact assembly is slightly expanded, the fixed rod is rotated into the moving hole, the locking block is rotated into the locking slot, the upper and lower buckling limiting assemblies are finally fixed, the auxiliary locking assembly after rotation is fixed, the end cover body is tightly buckled on the outer surface of the speed reducer body, the stability of the end cover body installation is improved, the loosening of the end cover body is avoided, and the double effects of anti-loosening and anti-impact of the end cover are realized under the mechanical linkage of the rotating assembly.

Description

Technical Field

[0001] This invention relates to the field of crane technology, specifically to a compact, impact-resistant, medium-hardened gear reducer for cranes that prevents loosening. Background Technology

[0002] A crane is an electromechanical device used for vertically lifting or vertically lifting and horizontally moving heavy objects. It is widely used in industry, construction, logistics, and other fields, achieving material handling through mechanisms such as lifting, traveling, luffing, and rotating. A medium-hardened gear reducer is a type of gear reducer mainly used in the crane's traveling mechanism. It can reduce speed and increase torque to meet the requirements of smooth crane operation. Furthermore, its gears and gear shafts are made of medium-carbon alloy steel with medium-hardened gear surfaces, featuring a compact structure, high load-bearing capacity, and high transmission efficiency.

[0003] In the existing technology, the reducer end cover is connected to the housing by bolts to prevent lubricating oil leakage and external dust, moisture and other impurities from entering the housing. Under the conditions of frequent start-stop, heavy load impact and long-term vibration of the crane, the bolts are prone to loosening, which can lead to the end cover coming loose. This can cause problems such as lubricating oil leakage, exposure of internal parts, and reduced transmission accuracy. In severe cases, it can even cause the reducer to fail and endanger the safety of crane operation.

[0004] Therefore, we propose a compact, impact-resistant, medium-hardened gear reducer for cranes to address the problems mentioned in the background section. Summary of the Invention

[0005] The purpose of this invention is to provide a compact, impact-resistant, medium-hardened gear reducer for cranes that prevents loosening, in order to solve the problem mentioned in the background art where the reducer end cover is connected to the housing by bolts. Under the conditions of frequent crane start-stop, heavy load impact, and long-term vibration, the bolts are prone to loosening, leading to the end cover loosening, which in turn causes lubricating oil leakage, affects the normal operation of the reducer, and in severe cases, endangers the safety of crane operation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A compact, impact-resistant, medium-hardened gear reducer for cranes, comprising a reducer body, wherein two end caps are bolted to both the front and rear surfaces of the reducer body, and further comprising: Auxiliary locking components, wherein several auxiliary locking components are provided, which are used to assist in locking the end cap body; Impact-resistant assembly for reducing impact on the end cap body; base assembly for providing a mounting base; A rotating assembly, which drives the auxiliary locking assembly and the impact-resistant assembly to move simultaneously; A limiting component, which is used to fix the rotating component after rotation; Each of the auxiliary locking components includes an adjusting rod, one end of which is fixedly fitted with a limiting ratchet, a fixing rod is fixedly fitted on one side of the outer surface of the limiting ratchet, a locking block is fixedly fitted on one end of the fixing rod, a sliding plate and a spring are movably sleeved on the outer surface of the adjusting rod, a pressing plate is fixedly fitted on the other end of the adjusting rod, and a sliding seat is slidably connected to one side of the outer surface of the sliding plate.

[0007] Preferably, four basic components are provided, which are respectively fixedly installed on the front and rear surfaces of the reducer body. Each basic component includes a locking base plate. The outer surface of the locking base plate is provided with an annular limiting groove. One side of the outer surface of the locking base plate is provided with four first pointing holes. The inner wall of each first pointing hole is provided with a plurality of first adjusting sliding holes at equal intervals.

[0008] Preferably, four rotating components are provided, each of which includes a rotating ring. Four second pointing holes are provided on one outer surface of the rotating ring, and multiple second adjusting sliding holes are provided at equal intervals on the inner wall of each second pointing hole. Eight ratchet plates are fixedly installed inside the annular cavity.

[0009] Preferably, the rotating ring has an annular cavity inside, and multiple fan-shaped holes are formed on both sides of the inner wall of the annular cavity. The outer surface of the rotating ring is movably embedded in the annular limiting groove. The limiting ratchet is engaged with two adjacent ratchet plates. The outer surface of the adjusting rod is movably embedded in the annular cavity. The two ends of the spring are fixedly connected to the opposite side of the sliding plate and the pressing plate, respectively. The slide is fixedly installed on the outer surface of the rotating ring.

[0010] Preferably, four impact-resistant components are provided, each of which includes a rubber pad. The outer surface of the rubber pad has four third pointing holes, and the inner wall of each third pointing hole has multiple third adjusting sliding holes at equal intervals. The interior of the rubber pad has multiple arc-shaped cavities. The outer surface of one side of the locking base plate has multiple first arc-shaped holes, and the inner wall of one side of the arc-shaped cavity has multiple second arc-shaped holes.

[0011] Preferably, a plurality of fixing posts are fixedly installed on one side of the outer surface of the rotating ring, an arc-shaped plate is fixedly installed at one end of each fixing post, at least two first magnet pieces are fixedly installed on one side of the outer surface of the arc-shaped plate, and a plurality of second magnet pieces are fixedly connected to the inner wall of each arc-shaped cavity, with the positions of the first magnet pieces and the second magnet pieces being staggered.

[0012] Preferably, the outer surface of the fixing column is movably embedded inside the first arc-shaped hole and the second arc-shaped hole, the outer surface of the arc-shaped plate is movably embedded inside the arc-shaped cavity, and the rubber pad is fixedly connected to one side of the outer surface of the locking base plate.

[0013] Preferably, the first pointing hole, the second pointing hole, and the third pointing hole are aligned and overlapped, and the first adjusting slide hole, the second adjusting slide hole, and the third adjusting slide hole are aligned and overlapped.

[0014] Preferably, the outer surface of the end cap body has four inlet grooves, each inlet groove has a sliding hole on one side of its inner wall, and a locking groove on the other side of its inner wall. The inner wall of the locking groove has a moving hole, which is connected to the sliding hole. The outer surface of the locking block is movably embedded in the inlet groove, and the outer surface of the fixing rod is movably embedded in the first pointing hole, the second pointing hole, the third pointing hole, and the sliding hole.

[0015] Preferably, two limiting components are provided, each including two reinforcing strips, and a locking tooth is fixedly installed on the inner wall of each reinforcing strip. Two reinforcing strips have hooks fixedly installed at both ends, and the other two reinforcing strips have rings fixedly installed at both ends. The hooks and rings are movably connected. Two limiting tooth blocks are fixedly installed on the outer surface of the rotating ring, and the locking teeth are meshed with the limiting tooth blocks. Four limiting rods are fixedly installed on the front and rear surfaces of the reducer body. Two slots are formed on the inner wall of each reinforcing strip, and the limiting rods are movably embedded in the slots.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. When using this invention, the pressing plate pushes the adjusting rod and the limiting ratchet to move, inserting the locking block into the inlet groove. Then, the rotating component is turned to drive the auxiliary locking component to rotate, while the anti-impact component is slightly expanded. At this time, the fixing rod rotates into the moving hole, and the locking block rotates into the locking groove. Finally, the upper and lower limiting components are engaged to fix the auxiliary locking component after rotation, thereby tightly pressing the end cover body onto the outer surface of the reducer body, improving the stability of the end cover body installation, and preventing the end cover body from loosening due to loose bolts. Under the mechanical linkage of the rotating component, the dual effects of preventing the end cover from loosening and resisting impact are achieved.

[0017] 2. When using this invention, the rotating ring simultaneously drives the fixed column to rotate, and the first magnet piece is rotated to the bottom of the second magnet piece through the arc plate. The two generate a repulsive force, which forces one side of the arc cavity to expand slightly outward, thereby making the rubber pad and the end cap body fit tightly together, increasing the contact area, and allowing the rubber pad to absorb more impact energy and improve the impact resistance.

[0018] 3. When using this invention, the first pointing hole, the second pointing hole, and the third pointing hole have the same structure and are arranged in a double arrow shape in cross-section. Before installing the end cap body, point a is used for the installation of the auxiliary locking component, and point b is used for the separate disassembly of the auxiliary locking component, so as to realize the modular independent installation and disassembly of the auxiliary locking component. The structure is compact and the operation is simple.

[0019] 4. When using this invention, the first adjusting slide hole, the second adjusting slide hole, and the third adjusting slide hole are aligned and overlapped, and multiple holes are provided to facilitate the movement of the locking block to different positions by the fixing rod, so as to lock the end caps of different sizes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the first angle structure of a compact, impact-resistant, medium-hardened tooth surface reducer for cranes according to the present invention; Figure 2 This is a schematic diagram of the second angle structure of a crane anti-loosening compact anti-impact medium-hardened tooth surface reducer according to the present invention; Figure 3 This is a schematic diagram showing the structure of the limiting component in a compact, impact-resistant, medium-hardened tooth surface reducer for cranes according to the present invention. Figure 4 This is a schematic diagram of the anti-impact component in a compact, anti-loosening, impact-resistant, medium-hardened tooth surface reducer for cranes according to the present invention; Figure 5 This is a schematic diagram of the rotating component in a compact, impact-resistant, medium-hardened tooth surface reducer for cranes according to the present invention. Figure 6 This is a cross-sectional schematic diagram of the inlet groove structure of a compact, impact-resistant, medium-hardened tooth surface reducer for cranes according to the present invention; Figure 7 This is a partial cross-sectional schematic diagram of the locking base plate in a compact, impact-resistant, medium-hardened tooth surface reducer for cranes according to the present invention; Figure 8 This is a schematic cross-sectional view of the rubber pad structure in a compact, impact-resistant, medium-hardened tooth surface reducer for cranes according to the present invention. Figure 9 This is a cross-sectional schematic diagram of the arc-shaped cavity in a crane anti-loosening compact anti-impact medium-hardened tooth surface reducer of the present invention; Figure 10 This is a cross-sectional view of the arc-shaped cavity from another angle in the anti-loosening compact anti-impact medium-hardened tooth surface reducer for cranes according to the present invention; Figure 11 This is a schematic diagram of the arc-shaped plate in a compact, impact-resistant, medium-hardened tooth surface reducer for cranes according to the present invention. Figure 12This is a schematic diagram showing the structure of the auxiliary locking assembly in a compact, impact-resistant, medium-hardened tooth surface reducer for cranes according to the present invention. Figure 13 This is a schematic diagram of the ratchet plate in a compact, impact-resistant, medium-hardened tooth surface reducer for cranes according to the present invention.

[0021] In the diagram: 1. Reducer body; 2. Basic assembly; 201. Locking base plate; 202. Annular limiting groove; 203. First pointing hole; 204. First adjusting sliding hole; 205. First arc-shaped hole; 3. Rotating assembly; 301. Rotating ring; 302. Limiting tooth block; 303. Annular cavity; 304. Fan-shaped hole; 305. Second pointing hole; 306. Second adjusting sliding hole; 307. Fixed column; 308. Arc-shaped plate; 309. First magnet piece; 310. Racket plate; 4. Auxiliary locking assembly; 401. Adjusting rod; 402. Limiting ratchet; 403. 1. Fixed rod; 404. Locking block; 405. Slide plate; 406. Spring; 407. Pressing plate; 408. Slide seat; 5. Impact-resistant component; 501. Rubber pad; 502. Third pointing hole; 503. Third adjusting sliding hole; 504. Arc cavity; 505. Second arc hole; 506. Second magnet piece; 6. Limiting component; 601. Reinforcing strip; 602. Locking tooth; 603. Hook; 604. Snap ring; 605. Snap groove; 7. End cap body; 8. Inlet groove; 9. Sliding hole; 10. Locking groove; 11. Moving hole; 12. Limiting rod. Detailed Implementation

[0022] Please see Figures 1 to 13 As shown, the present invention provides a technical solution: A compact, impact-resistant, medium-hardened gear reducer for cranes, comprising a reducer body 1, with two end cap bodies 7 bolted to both the front and rear surfaces of the reducer body 1, and further comprising: Auxiliary locking component 4, of which several are provided, is used to assist in locking the end cap body 7; Impact-resistant component 5 is used to reduce the impact on the end cap body 7; Basic Component 2 provides the foundation for installation. Rotating component 3 is used to drive the auxiliary locking component 4 and the anti-impact component 5 to move simultaneously. Limiting component 6 is used to fix the rotating component 3 after rotation; Each auxiliary locking assembly 4 includes an adjusting rod 401. One end of the adjusting rod 401 is fixedly installed with a limiting ratchet 402. A fixing rod 403 is fixedly installed on one side of the outer surface of the limiting ratchet 402. A locking block 404 is fixedly installed on one end of the fixing rod 403. A sliding plate 405 and a spring 406 are movably sleeved on the outer surface of the adjusting rod 401. A pressing plate 407 is fixedly installed on the other end of the adjusting rod 401. A sliding block 408 is slidably connected to one side of the outer surface of the sliding plate 405.

[0023] The outer surface of the end cap body 7 is provided with four inlet grooves 8. Each inlet groove 8 has a sliding hole 9 on one side of its inner wall and a locking groove 10 on the other side of its inner wall. The inner wall of the locking groove 10 has a moving hole 11, which is connected to the sliding hole 9.

[0024] In practical applications, by pushing the pressing plate 407 to move, the adjusting rod 401 is moved, which in turn causes the limiting ratchet 402 to move between two adjacent ratchet plates 310. At this time, the compression spring 406 is compressed, and the teeth of both the limiting ratchet 402 and the ratchet plate 310 have a certain elasticity. Through tooth deformation, the limiting ratchet 402 can move to different positions on the ratchet plate 310. As the limiting ratchet 402 moves, it drives the fixing rod 403 to move into the sliding hole 9, causing the locking block 404 to insert into the inlet groove 8. When the locking block 404 abuts against the inlet groove 8, the pressing plate 407 can no longer press down. Then, the rotating component 3 is turned, driving the auxiliary locking component 4 to rotate. At the same time, the impact-resistant component 5 is slightly expanded, thereby rotating the multiple fixing rods 403 into the corresponding moving holes 11, and the locking block 404 into the corresponding locking groove 10. The structure of the locking groove 10 matches the structure of the locking block 404. Finally, the upper and lower limiting components 6 are engaged to fix the rotated rotating component 3. This fixes the auxiliary locking component 4 after rotation, thereby tightly pressing the end cover body 7 onto the outer surface of the reducer body 1, improving the stability of the end cover body 7 installation, and preventing the end cover body 7 from loosening due to loose bolts. Under the mechanical linkage of the rotating component 3, the end cover achieves both anti-loosening and impact resistance, solving the problem that the reducer end cover is connected to the housing by bolts, which is prone to loosening under frequent crane starts and stops, heavy load impacts, and long-term vibration conditions, leading to end cover loosening, lubricating oil leakage, affecting the normal operation of the reducer, and in severe cases, endangering the safety of crane operation.

[0025] It should also be noted that there are four basic components 2, which are fixedly installed on the front and rear surfaces of the reducer body 1 respectively. Each basic component 2 includes a locking base plate 201. The outer surface of the locking base plate 201 is provided with an annular limiting groove 202. One side of the outer surface of the locking base plate 201 is provided with four first pointing holes 203. The inner wall of each first pointing hole 203 is provided with multiple first adjusting sliding holes 204 at equal intervals.

[0026] See Figure 5 and Figures 7 to 9 As shown, the locking base plate 201 is first firmly bonded to the outer surface of the reducer body 1 with Loctite adhesive. After the installation of the entire anti-loosening and anti-impact mechanism is completed, the end cover body 7 is installed onto the outer surface of the anti-impact component 5. Both the locking base plate 201 and the rubber pad 501 have mounting holes of a certain length (elliptical in the figure, i.e., close together) for end cover mounting bolts of different sizes. Two limiting rings are provided on the inner wall of the annular limiting groove 202. A corresponding slot is provided at the edge of the outer surface of the rotating ring 301. The limiting rings cooperate with the slots to limit the rotating ring 301 within the annular limiting groove 202.

[0027] It should also be noted that there are four rotating components 3. Each rotating component 3 includes a rotating ring 301. Four second pointing holes 305 are opened on one side of the outer surface of the rotating ring 301. Multiple second adjusting sliding holes 306 are opened at equal intervals on the inner wall of each second pointing hole 305. Eight ratchet plates 310 are fixedly installed inside the annular cavity 303.

[0028] See Figure 5 and Figures 12 to 13 As shown, the ratchet plate 310 is used to limit and fix the moved limiting ratchet 402, preventing the limiting ratchet 402 from moving back to its original position under the elastic force of the spring 406, thereby improving the stability of the limiting ratchet 402.

[0029] It should also be noted that the rotating ring 301 has an annular cavity 303 inside, and multiple fan-shaped holes 304 are opened on both sides of the inner wall of the annular cavity 303. The outer surface of the rotating ring 301 is movably embedded in the annular limiting groove 202. The limiting ratchet 402 is engaged with two adjacent ratchet plates 310. The outer surface of the adjusting rod 401 is movably embedded in the annular cavity 303. The two ends of the spring 406 are fixedly connected to the opposite side of the sliding plate 405 and the pressing plate 407, respectively. The slide 408 is fixedly installed on the outer surface of the rotating ring 301.

[0030] See Figures 5 to 7 , Figure 9 and Figures 12 to 13 As shown, the fan-shaped hole 304 corresponds to the mounting holes on the locking base plate 201 and the rubber pad 501, as... Figure 7As shown, when the rotating ring 301 rotates in the annular limiting groove 202, the fan-shaped hole 304 rotates on the outer surface of the bolt of the end cover body 7, without affecting the bolt. The sliding plate 405 and the sliding seat 408 are closely connected, and the two cooperate to limit the auxiliary locking component 4, making it more stably installed inside the rotating component 3.

[0031] It should also be noted that there are four impact-resistant components 5. Each impact-resistant component 5 includes a rubber pad 501. The outer surface of the rubber pad 501 has four third pointing holes 502. The inner wall of each third pointing hole 502 has multiple third adjusting sliding holes 503 at equal intervals. The inside of the rubber pad 501 has multiple arc-shaped cavities 504. The outer surface of one side of the locking base plate 201 has multiple first arc-shaped holes 205. The inner wall of one side of the arc-shaped cavity 504 has multiple second arc-shaped holes 505.

[0032] See Figures 4 to 5 and Figures 7 to 11 As shown, a rubber pad 501 is provided between the end cap body 7 and the reducer body 1 to reduce the vibration and impact transmitted to the end cap body 7, and the arc-shaped cavity 504 provides expansion space. The first arc-shaped hole 205 and the second arc-shaped hole 505 are positioned correspondingly and overlap vertically to facilitate the rotation of the fixing column 307. The rubber pad 501 is made of hydrogenated nitrile rubber, which has good deformation elasticity.

[0033] It should also be noted that multiple fixing posts 307 are fixedly installed on one side of the outer surface of the rotating ring 301. An arc plate 308 is fixedly installed at one end of each fixing post 307. At least two first magnet pieces 309 are fixedly installed on one side of the outer surface of the arc plate 308. Multiple second magnet pieces 506 are fixedly connected to the inner wall of each arc cavity 504. The positions of the first magnet pieces 309 and the second magnet pieces 506 are staggered. The outer surface of the fixing post 307 is movably embedded in the first arc hole 205 and the second arc hole 505. The outer surface of the arc plate 308 is movably embedded in the arc cavity 504. The rubber pad 501 is fixedly connected to one side of the outer surface of the locking base plate 201.

[0034] See Figure 5 , Figures 9 to 11 and Figure 13 As shown, when the rotating ring 301 rotates, it drives the fixed column 307 to rotate in the first arc-shaped hole 205 and the second arc-shaped hole 505, which in turn drives the arc-shaped plate 308 to rotate. This causes the staggered first magnet piece 309 and the second magnet piece 506 to face each other. The first magnet piece 309 and the second magnet piece 506 have the same magnetism and generate a repulsive force, which forces the side of the arc-shaped cavity 504 where the second magnet piece 506 is installed to expand slightly outward. This makes the rubber pad 501 fit tightly with the end cap body 7, increasing the contact area. The rubber pad 501 can absorb more impact energy and improve the impact resistance.

[0035] It should also be noted that the first pointing hole 203, the second pointing hole 305, and the third pointing hole 502 are aligned and overlapped, as are the first adjusting sliding hole 204, the second adjusting sliding hole 306, and the third adjusting sliding hole 503. The outer surface of the locking block 404 is movably embedded inside the inlet groove 8, and the outer surface of the fixing rod 403 is movably embedded inside the first pointing hole 203, the second pointing hole 305, the third pointing hole 502, and the sliding hole 9.

[0036] See Figures 4 to 8 As shown, the first pointing hole 203, the second pointing hole 305, and the third pointing hole 502 have the same structure and are aligned to facilitate the movement of the fixing rod 403. The cross-section is arranged with double arrows, as shown... Figure 7 As shown, the arrow hole near the edge is at point a, and the other arrow hole is at point b, as... Figure 8 As shown, before installing the end cap body 7, the limiting ratchet 402 passes through point a and enters the annular cavity 303, engaging with the two ratchet plates 310 to complete the installation of the auxiliary locking assembly 4. After removing the end cap body 7, the limiting ratchet 402 is pushed to point b by pressing the adjusting rod 401 with the pressing plate 407, thus removing the limiting ratchet 402 from the ratchet plates 310 and the annular cavity 303, completing the individual disassembly of the auxiliary locking assembly 4. This achieves modular independent installation and disassembly of the auxiliary locking assembly 4, with a compact structure and simple operation.

[0037] The first adjusting slide hole 204, the second adjusting slide hole 306, and the third adjusting slide hole 503 are aligned so that when the fixing rod 403 rotates, it can slide into the corresponding positions of the first adjusting slide hole 204, the second adjusting slide hole 306, and the third adjusting slide hole 503 without affecting the locking of the end cover body 7.

[0038] The locking groove 10 and the inlet groove 8 are located at different positions on the end cap body 7 of different sizes. The larger the end cap, the closer the locking groove 10 is to point a, and the smaller the end cap, the closer the locking groove 10 is to point b. Multiple first adjusting slide holes 204, second adjusting slide holes 306 and third adjusting slide holes 503 are provided to facilitate moving the fixing rod 403 to different positions to lock the end caps of different sizes.

[0039] It should also be noted that there are two limiting components 6. Each limiting component 6 includes two reinforcing bars 601. The inner wall of each reinforcing bar 601 is fixedly installed with locking teeth 602. Both ends of the two reinforcing bars 601 are fixedly installed with hooks 603. The two ends of the other two reinforcing bars 601 are fixedly installed with retaining rings 604. The hooks 603 and retaining rings 604 are movably connected. The outer surface of the rotating ring 301 is fixedly installed with two limiting teeth blocks 302. The locking teeth 602 and the limiting teeth blocks 302 are meshed. The front and rear surfaces of the reducer body 1 are fixedly installed with four limiting rods 12. The inner wall of each reinforcing bar 601 has two slots 605, and the limiting rods 12 are movably embedded in the slots 605.

[0040] See Figures 1 to 3 As shown, the structure of the limiting tooth block 302 is as follows: Figure 3 As shown, the middle part has teeth, and the front and rear parts have baffles. After the end cap body 7 is locked, the slot 605 is aligned with the limiting rod 12, and the locking teeth 602 is aligned with the position of the limiting tooth block 302. Then, the two reinforcing strips 601 are pressed together from top to bottom, so that the locking teeth 602 and the teeth of the limiting tooth block 302 mesh, thereby fixing the rotating ring 301 after rotation. At the same time, the front and rear baffles limit the locking teeth 602. Then, slightly press the two sides of the reinforcing strip 601 to put the hook 603 into the ring 604, thus completing the locking of the rotating component 3. Through the cooperation of the limiting rod 12 and the slot 605, the reinforcing strip 601 is limited to prevent it from moving laterally.

[0041] Please see Figures 1 to 13As shown, the overall effect and working principle of the mechanism are as follows: the pressing plate 407 pushes the adjusting rod 401 to move, which drives the limiting ratchet 402 to move between two adjacent ratchet plates 310. At this time, the compression spring 406 is compressed, and at the same time, the fixing rod 403 is moved to the sliding hole 9, so that the locking block 404 is inserted into the inlet groove 8. When the locking block 404 abuts against the inlet groove 8, the pressing plate 407 can no longer press. Then, the rotating ring 301 is turned to drive the auxiliary locking assembly 4 to rotate, so that the fixing rod 403 rotates to the corresponding positions of the first adjusting sliding hole 204, the second adjusting sliding hole 306 and the third adjusting sliding hole 503, and the fixing rod 403 rotates to the moving hole 11. The locking block 404 rotates to the corresponding locking groove 10, and the end cover body 7 is locked to prevent loosening. Simultaneously, the rotating ring 301 drives the fixed column 307 to rotate within the first arc-shaped hole 205 and the second arc-shaped hole 505. The arc-shaped plate 308 rotates the first magnet 309 below the second magnet 506, generating a repulsive force that forces the side of the arc-shaped cavity 504 where the second magnet 506 is installed to expand slightly outwards. At this time, the rubber pad 501 and the end cap body 7 are tightly fitted together. Finally, the two reinforcing strips 601 are pressed together, causing the locking teeth 602 to engage with the teeth of the limiting teeth block 302, thereby fixing the rotated ring 301. Simultaneously, the front and rear baffles limit the locking teeth 602. Then, slightly pressing the sides of the reinforcing strips 601 engages the hooks 603 with the rings 604, thus completing the locking of the rotating assembly 3.

Claims

1. A compact, impact-resistant, medium-hardened gear reducer for cranes, comprising a reducer body (1), wherein two end cap bodies (7) are bolted to both the front and rear surfaces of the reducer body (1), characterized in that: Also includes: Auxiliary locking assembly (4), of which several are provided, for assisting in locking the end cap body (7). Impact-resistant component (5), the impact-resistant component (5) is used to reduce the impact on the end cap body (7); Basic component (2), which provides an installation base; Rotating assembly (3), which is used to drive the auxiliary locking assembly (4) and the anti-impact assembly (5) to move simultaneously; Limiting component (6), the limiting component (6) is used to fix the rotating component (3) after rotation; Each of the auxiliary locking components (4) includes an adjusting rod (401), one end of which is fixedly mounted with a limiting ratchet (402), and a fixing rod (403) is fixedly mounted on one side of the outer surface of the limiting ratchet (402). A locking block (404) is fixedly mounted on one end of the fixing rod (403). A sliding plate (405) and a spring (406) are movably sleeved on the outer surface of the adjusting rod (401). A pressing plate (407) is fixedly mounted on the other end of the adjusting rod (401). A sliding block (408) is slidably connected to one side of the outer surface of the sliding plate (405).

2. The anti-loosening compact impact-resistant medium-hardened gear reducer for cranes according to claim 1, characterized in that: The basic components (2) are provided in four parts, which are fixedly installed on the front and rear surfaces of the reducer body (1). Each basic component (2) includes a locking base plate (201). The outer surface of the locking base plate (201) is provided with an annular limiting groove (202). The outer surface of one side of the locking base plate (201) is provided with four first pointing holes (203). The inner wall of each first pointing hole (203) is provided with multiple first adjusting sliding holes (204) at equal intervals.

3. The anti-loosening compact impact-resistant medium-hardened gear reducer for cranes according to claim 2, characterized in that: The rotating assembly (3) is provided in four parts. Each rotating assembly (3) includes a rotating ring (301). Four second pointing holes (305) are opened on one side of the outer surface of the rotating ring (301). Multiple second adjusting sliding holes (306) are opened at equal intervals on the inner wall of each second pointing hole (305). Eight ratchet plates (310) are fixedly installed inside the annular cavity (303).

4. The anti-loosening compact impact-resistant medium-hardened gear reducer for cranes according to claim 3, characterized in that: The rotating ring (301) has an annular cavity (303) inside. Multiple fan-shaped holes (304) are opened on both sides of the inner wall of the annular cavity (303). The outer surface of the rotating ring (301) is movably embedded in the annular limiting groove (202). The limiting ratchet (402) is engaged with two adjacent ratchet plates (310). The outer surface of the adjusting rod (401) is movably embedded in the annular cavity (303). The two ends of the spring (406) are fixedly connected to the opposite side of the sliding plate (405) and the pressing plate (407), respectively. The slide (408) is fixedly installed on the outer surface of the rotating ring (301).

5. The anti-loosening compact impact-resistant medium-hardened gear reducer for cranes according to claim 4, characterized in that: Four impact-resistant components (5) are provided, and each impact-resistant component (5) includes a rubber pad (501). The outer surface of the rubber pad (501) is provided with four third pointing holes (502). The inner wall of each third pointing hole (502) is provided with multiple third adjusting sliding holes (503) at equal intervals. The rubber pad (501) is provided with multiple arc-shaped cavities (504). The outer surface of one side of the locking base plate (201) is provided with multiple first arc-shaped holes (205). The inner wall of one side of the arc-shaped cavity (504) is provided with multiple second arc-shaped holes (505).

6. The anti-loosening compact impact-resistant medium-hardened gear reducer for cranes according to claim 5, characterized in that: A plurality of fixed posts (307) are fixedly installed on one side of the outer surface of the rotating ring (301). An arc plate (308) is fixedly installed at one end of each fixed post (307). At least two first magnet pieces (309) are fixedly installed on one side of the outer surface of the arc plate (308). A plurality of second magnet pieces (506) are fixedly connected to the inner wall of each arc cavity (504). The positions of the first magnet pieces (309) and the second magnet pieces (506) are staggered.

7. The anti-loosening compact impact-resistant medium-hardened gear reducer for cranes according to claim 6, characterized in that: The outer surface of the fixed column (307) is movably embedded in the first arc-shaped hole (205) and the second arc-shaped hole (505), the outer surface of the arc-shaped plate (308) is movably embedded in the arc-shaped cavity (504), and the rubber pad (501) is fixedly connected to one side of the outer surface of the locking base plate (201).

8. The anti-loosening compact impact-resistant medium-hardened gear reducer for cranes according to claim 7, characterized in that: The first pointing hole (203), the second pointing hole (305) and the third pointing hole (502) are aligned and overlapped, and the first adjusting sliding hole (204), the second adjusting sliding hole (306) and the third adjusting sliding hole (503) are aligned and overlapped.

9. The anti-loosening compact impact-resistant medium-hardened gear reducer for cranes according to claim 8, characterized in that: The outer surface of the end cap body (7) is provided with four inlet grooves (8), and each inlet groove (8) has a sliding hole (9) on one side inner wall. The other side inner wall of the inlet groove (8) is provided with a locking groove (10). The inner wall of the locking groove (10) is provided with a moving hole (11). The moving hole (11) is connected to the sliding hole (9). The outer surface of the locking block (404) is movably embedded in the inside of the inlet groove (8). The outer surface of the fixing rod (403) is movably embedded in the inside of the first pointing hole (203), the second pointing hole (305), the third pointing hole (502) and the sliding hole (9).

10. The anti-loosening compact impact-resistant medium-hardened gear reducer for cranes according to claim 9, characterized in that: Two limiting components (6) are provided. Each limiting component (6) includes two reinforcing strips (601). Locking teeth (602) are fixedly installed on the inner wall of each reinforcing strip (601). Hooks (603) are fixedly installed at both ends of the two reinforcing strips (601). Rings (604) are fixedly installed at both ends of the other two reinforcing strips (601). Hooks (603) and rings (604) are movably connected. Two limiting teeth blocks (302) are fixedly installed on the outer surface of the rotating ring (301). Locking teeth (602) and limiting teeth blocks (302) are meshed. Four limiting rods (12) are fixedly installed on the front and rear surfaces of the reducer body (1). Two slots (605) are opened on the inner wall of each reinforcing strip (601), and the limiting rods (12) are movably embedded in the slots (605).

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