A hoist housing reinforced reverse self-locking worm and gear reducer

Abstract

The application provides a hoist shell reinforced reverse self-locking worm and gear speed reducer, and relates to the technical field of speed reducers.The hoist shell reinforced reverse self-locking worm and gear speed reducer comprises a shell, a reverse self-locking mechanism is installed on the inner wall of the shell, two connecting plates are installed on the outer surface of the reverse self-locking mechanism, a worm is installed on the inner wall of the shell, a worm wheel meshed with the worm is installed on the inner wall of the shell, the reverse self-locking mechanism comprises a support shell fixed between the outer surfaces of the two connecting plates, the connecting plates are fixedly connected with the inner wall of the shell through bolts, and a shaft rod is rotatably connected to the inner wall of the support shell.The application drives the fixing ring to rotate through the shaft rod, the force provided by the linkage through the resistance mechanism can drive the clamping plate to have a force rotating the fixing ring, when the fixing ring drives the helical gear to rotate clockwise, the clamping plate blocks the helical gear, the clockwise rotation of the fixing ring is prevented, and the reverse self-locking function is formed, thereby avoiding the reverse rotation of the worm wheel.

Description

Technical Field

[0001] This invention relates to the field of speed reducer technology, and in particular to a hoist housing reinforced reverse self-locking worm gear reducer. Background Technology

[0002] In the field of industrial transmission, conventional gear reducers and planetary reducers often require external braking components to achieve position locking. However, worm gear reducers, due to their unique structural characteristics, naturally possess self-locking capabilities and are a common choice for applications requiring static locking, such as lifting platforms, vertical conveying mechanisms, and material lifting equipment. This superior locking effect comes from the meshing mechanism of worm gear drives: the helix angle of engineering worm gears is generally designed to be smaller than the equivalent friction angle of the meshing pair, so power can only be input from the worm input end, driving the worm output end to rotate; when torque is applied to the worm gear in the opposite direction, the force cannot overcome the static friction of the meshing surface to drive the worm to reverse, thus achieving position locking without additional braking structure, which can effectively prevent the load from sliding down due to its own weight when the equipment stops, and greatly simplify the structural design of the transmission system; However, the self-locking capability of worm gear reducers has a very clear load limit, and they can only withstand load torques below the critical threshold. If the load force on the output end in the application scenario exceeds the maximum static friction force of the worm gear meshing surface, the original locking state will be broken, and the output end will still rotate unexpectedly. If the working condition is under high load and strong impact for a long time, the meshing surface will also experience accelerated wear, further reducing the self-locking limit and even causing transmission failure. Therefore, a reverse self-locking worm gear reducer with a reinforced housing for hoists is needed to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies. The self-locking capability of worm gear reducers has a clearly defined load-bearing limit, only able to withstand load torques below a critical threshold. If the load force on the output end exceeds the maximum static friction force of the worm gear meshing surface in the application scenario, the original locking state will be broken, and unexpected rotation will still occur at the output end. If the operating conditions are under high load and strong impact for a long period, the meshing surface will experience accelerated wear, further reducing the self-locking limit and even causing transmission failure.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a hoist housing reinforced reverse self-locking worm gear reducer, comprising a housing, a reverse self-locking mechanism installed on the inner wall of the housing, two connecting plates installed on the outer surface of the reverse self-locking mechanism, a worm gear installed on the inner wall of the housing, and a worm wheel meshing with the worm gear installed on the inner wall of the housing. The reverse self-locking mechanism includes a support shell fixed between the outer surfaces of the two connecting plates. The connecting plates are fixedly connected to the inner wall of the housing by bolts, and a shaft is rotatably connected to the inner wall of the support shell. One end of the shaft rotatably extends through the outside of the support housing and is fixedly connected to one end of the worm gear via a flange mechanism. A fixing ring is fixedly sleeved on the outer surface of the shaft, and multiple helical teeth are fixedly connected to the outer surface of the fixing ring. An outer ring is fixedly connected to the inner wall of the support housing, and multiple sets of symmetrical clamping plates are fixedly connected to the inner wall of the outer ring. A locking plate adapted to the helical teeth is rotatably connected between the outer surfaces of each set of clamping plates. A linkage component is installed on the outer surface of the locking plate. A resistance mechanism is installed on the outer surface of the shaft, and an unlocking mechanism is fixedly installed on the outer surface of the shaft.

[0005] In a preferred embodiment, the linkage includes a first support rod, a slider, and a second support rod. Two first rotating balls are fixedly connected to both ends of the first support rod, and two second rotating balls are fixedly connected to both ends of the second support rod.

[0006] In a preferred embodiment, the outer surface of the slider has two first ball grooves, the inner walls of the two first ball grooves are rotatably connected to the outer surfaces of the first and second rotating balls, respectively, and a second ball groove is provided on one side of the plate, the inner wall of the second ball groove is rotatably connected to the outer surface of the first rotating ball.

[0007] In a preferred embodiment, the resistance mechanism includes a limiting ring fixed to the outer surface of the shaft and two fixing plates fixed to the inner wall of the support shell. The outer surface of the limiting ring is rotatably connected to a ring plate, and the outer surfaces of the two fixing plates are slidably connected to the outer surface of the ring plate. A plurality of third ball grooves are provided on one side of the ring plate, and the inner wall of the third ball groove is rotatably connected to the outer surface of the second rotating ball.

[0008] In a preferred embodiment, two arc holes are formed on one side of the ring plate. An arc block is slidably connected to the inner wall of the arc hole, and an arc rod is fixedly connected to the inner wall of the arc hole. One end of the arc rod slides through to the outside of the arc block, and an arc spring is provided on the outer surface of the arc rod. One end of the arc spring is fixedly connected to the inner wall of the arc hole, and the other end of the arc spring is fixedly connected to one side of the arc block.

[0009] In a preferred embodiment, the unlocking mechanism includes a support ring rotatably sleeved on the outer surface of the shaft. A plurality of limiting members are fixedly connected to the outer surface of the support ring. A connecting ring is fixedly connected between the outer surfaces of the plurality of limiting members. The outer surface of the connecting ring is fixedly connected to the inner wall of the support shell. The outer surfaces of each pair of limiting members are slidably connected to the outer surface of the slider.

[0010] In one preferred embodiment, a sliding hole is provided on one side of one of the limiting members, and a push rod is slidably connected to the inner wall of the sliding hole, the push rod sliding through to the outside of the support shell.

[0011] In a preferred embodiment, a fixing rod is fixedly connected to the inner wall of the sliding hole. One end of the fixing rod slides through to the outside of the push rod. A spring is provided on the outer surface of the fixing rod. One end of the spring is fixedly connected to the inner wall of the sliding hole, and the other end of the spring is fixedly connected to the outer surface of the push rod.

[0012] In a preferred embodiment, a push plate is slidably connected to the inner wall of the sliding hole, and one side of the push plate is fixedly connected to one end of the push rod.

[0013] In a preferred embodiment, the unlocking mechanism further includes a bracket fixed to the outside of the support shell, the inner wall of the bracket being slidably connected to the outer surface of the push rod, a rotating frame being slidably connected to the inner wall of the bracket, and the outer surface of the rotating frame being rotatably connected to the outer surface of the push rod.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. In this invention, the fixed ring is rotated by the shaft, and the clamping plate, through the resistance mechanism, drives the linkage to provide a force that causes the clamping plate to rotate towards the fixed ring. When the fixed ring drives the helical gear to rotate clockwise, the clamping plate will block the helical gear, thus preventing the fixed ring from rotating clockwise, thereby forming a reverse self-locking function and preventing the worm gear from rotating in the opposite direction. Through the first ball groove, the second ball groove, and the third ball groove, in conjunction with the first rotating ball and the second rotating ball, the first support rod can be rotated and adjusted at the clamping plate, the second support rod can be rotated and adjusted at the ring plate, and the first and second support rods can be rotated and adjusted at the sliding ball. Thus, the counterclockwise rotation of the ring plate drives the linkage to drive the clamping plate to rotate, thereby separating it from the helical gear and achieving the unlocking effect. The clockwise rotation of the ring plate drives the linkage to drive the clamping plate to rotate and contact the fixed ring to form a locking mechanism, achieving a reverse self-locking effect.

[0015] 2. In this invention, the push rod drives the push plate to move, which in turn drives one of the sliders to move. The movement of the slider, in conjunction with the second support rod and the ring plate, drives the ring plate to rotate, thereby driving all the linkage components to separate the locking plate from the fixed ring. The limiting effect formed by the rotating frame entering the bracket then releases the locking effect. Attached Figure Description

[0016] Figure 1 This invention provides a cross-sectional view of the housing structure of a hoist housing-reinforced reverse self-locking worm gear reducer; Figure 2 This invention provides a structural schematic diagram of the reverse self-locking mechanism of a hoist housing reinforced reverse self-locking worm gear reducer; Figure 3 This invention provides a schematic cross-sectional view of the support structure of a winch housing reinforced with a reverse self-locking worm gear reducer; Figure 4 This invention provides a schematic diagram of the internal structure of the support shell of a winch-type reinforced reverse self-locking worm gear reducer; Figure 5 This invention provides a schematic diagram of the internal side view of the support shell structure of a winch housing reinforced with a reverse self-locking worm gear reducer; Figure 6 This invention provides a cross-sectional structural diagram of the unlocking mechanism of a reverse self-locking worm gear reducer with a reinforced housing for winches; Figure 7 This invention provides a cross-sectional side view of the unlocking mechanism of a reverse self-locking worm gear reducer with a reinforced housing for winches.

[0017] Legend: 1. Housing; 2. Reverse self-locking mechanism; 3. Worm gear; 4. Worm wheel; 5. Connecting plate; 21. Support housing; 22. Shaft; 23. Retaining ring; 24. Helical gear; 25. Outer ring; 26. Clamping plate; 27. Linkage component; 28. Resistance mechanism; 29. ​​Unlocking mechanism; 210. Clamping plate; 271. First stick; 272. First ball spin; 273. Slider; 274. Second stick; 275. Second ball spin; 281. Limiting ring; 282. Ring plate; 283. Fixing plate; 284. Arc hole; 285. Arc block; 286. Arc rod; 287. Arc spring; 291. Support ring; 292. Limiting component; 293. Connecting ring; 294. Sliding hole; 295. Fixing rod; 296. Spring; 297. Push rod; 298. Bracket; 299. Rotating frame; 2910. Push plate. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example like Figure 1-7 As shown, the present invention provides a technical solution: a hoist housing reinforced reverse self-locking worm gear reducer, comprising a housing 1, a reverse self-locking mechanism 2 installed on the inner wall of the housing 1, two connecting plates 5 installed on the outer surface of the reverse self-locking mechanism 2, a worm 3 installed on the inner wall of the housing 1, and a worm wheel 4 meshing with the worm 3 installed on the inner wall of the housing 1. The reverse self-locking mechanism 2 includes a support shell 21 fixed between the outer surfaces of the two connecting plates 5. The connecting plates 5 are fixedly connected to the inner wall of the housing 1 by bolts. A shaft 22 is rotatably connected to the inner wall of the support shell 21, and one end of the shaft 22 rotatably passes through. The outer side of the support shell 21 is fixedly connected to one end of the worm gear 3 via a flange mechanism. A fixing ring 23 is fixedly sleeved on the outer surface of the shaft 22. Multiple helical teeth 24 are fixedly connected to the outer surface of the fixing ring 23. An outer ring 25 is fixedly connected to the inner wall of the support shell 21. Multiple sets of symmetrical clamping plates 210 are fixedly connected to the inner wall of the outer ring 25. A clamping plate 26 that matches the helical teeth 24 is rotatably connected between the outer surfaces of each set of clamping plates 210. A linkage 27 is installed on the outer surface of the clamping plate 26. A resistance mechanism 28 is installed on the outer surface of the shaft 22. An unlocking mechanism 29 is fixedly installed on the outer surface of the shaft 22. Through the above embodiments, Figure 2 Based on this, the worm 3 rotates counterclockwise, driving the shaft 22 to rotate, which in turn drives the fixed ring 23 to rotate. The helical teeth 24 on the fixed ring 23 can move the locking plate 26 to rotate, thus preventing it from locking. In this way, the worm 3 can drive the worm wheel 4 to rotate and work. If the worm wheel 4 is driven to rotate in the opposite direction due to a large reverse force, the worm wheel 4 will drive the worm 3 to rotate clockwise, which will then drive the fixed ring 23 to rotate through the shaft 22. The locking plate 26, through the resistance mechanism 28 and the force provided by the linkage 27, can drive the locking plate 26 to have a force that rotates towards the fixed ring 23. Therefore, when the fixed ring 23 drives the helical teeth 24 to rotate clockwise, the locking plate 26 will block the helical teeth 24, thus preventing the fixed ring 23 from rotating clockwise, thereby forming a reverse self-locking function and preventing the worm wheel 4 from rotating in the opposite direction. The linkage 27 includes a first support rod 271, a slider 273, and a second support rod 274. Two first rotating balls 272 are fixedly connected to both ends of the first support rod 271, and two second rotating balls 275 are fixedly connected to both ends of the second support rod 274. Two first ball grooves are formed on the outer surface of the slider 273, and the inner walls of the two first ball grooves are rotatably connected to the outer surfaces of the first rotating balls 272 and the second rotating balls 275, respectively. A second ball groove is formed on one side of the clamping plate 26, and the inner wall of the second ball groove is rotatably connected to the outer surface of the first rotating balls 272. Through the above embodiments, by using the first ball groove, the second ball groove, and the third ball groove in conjunction with the first rotating ball 272 and the second rotating ball 275, the first support rod 271 can be rotated and adjusted at the locking plate 26, the second support rod 274 can be rotated and adjusted at the ring plate 282, and the first support rod 271 and the second support rod 274 can be rotated and adjusted at the sliding ball 273. Furthermore, by rotating the ring plate 282 counterclockwise, the linkage 27 drives the locking plate 26 to rotate, thereby separating it from the helical tooth 24 and achieving an unlocking effect. Also, by rotating the ring plate 282 clockwise, the linkage 27 drives the locking plate 26 to rotate and contact the fixed ring 23 to form a locking mechanism, achieving a reverse self-locking effect. Furthermore, by using the linkage 27, the resistance mechanism 28 can act on the locking plate 26, increasing the linkage between the structures. The resistance mechanism 28 includes a limiting ring 281 fixed to the outer surface of the shaft 22 and two fixing plates 283 fixed to the inner wall of the support shell 21. The outer surface of the limiting ring 281 is rotatably connected to a ring plate 282. The outer surfaces of the two fixing plates 283 are slidably connected to the outer surface of the ring plate 282. A plurality of third ball grooves are opened on one side of the ring plate 282. The inner wall of the third ball groove is rotatably connected to the outer surface of the second rotating ball 275. Two arc holes 284 are opened on one side of the ring plate 282. An arc block 285 is slidably connected to the inner wall of the arc hole 284. An arc rod 286 is fixedly connected to the inner wall of the arc hole 284. One end of the arc rod 286 slides through to the outside of the arc block 285. An arc spring 287 is provided on the outer surface of the arc rod 286. One end of the arc spring 287 is fixedly connected to the inner wall of the arc hole 284, and the other end of the arc spring 287 is fixedly connected to one side of the arc block 285. Through the above embodiments, the arc block 285 is fixed by the fixing plate 283, and the arc spring 287 can provide a force to the ring plate 282, so that the linkage 27 can drive the locking plate 26 to contact the fixing ring 23, thereby achieving the self-locking function. The unlocking mechanism 29 includes a support ring 291 rotatably sleeved on the outer surface of the shaft 22. Multiple limiting members 292 are fixedly connected to the outer surface of the support ring 291. A connecting ring 293 is fixedly connected between the outer surfaces of the multiple limiting members 292. The outer surface of the connecting ring 293 is fixedly connected to the inner wall of the support shell 21. The outer surfaces of each pair of limiting members 292 are slidably connected to the outer surface of the slider 273. Through the above embodiments, the sliding ball 273 can be limited by multiple limiting members 292 in conjunction with the support ring 291 and the connecting ring 293, thereby making the sliding trajectory of the sliding ball 273 more stable. In turn, the rotation of the ring plate 282 can drive the clamping plate 26 to rotate through the second support rod 274 in conjunction with the first support rod 271. One of the limiting members 292 has a sliding hole 294 on one side, and a push rod 297 is slidably connected to the inner wall of the sliding hole 294. The push rod 297 slides through to the outside of the support shell 21. A fixing rod 295 is fixedly connected to the inner wall of the sliding hole 294. One end of the fixing rod 295 slides through to the outside of the push rod 297. A spring 296 is provided on the outer surface of the fixing rod 295. One end of the spring 296 is fixedly connected to the inner wall of the sliding hole 294, and the other end of the spring 296 is fixedly connected to the outer surface of the push rod 297. Through the above embodiments, the push rod 297 extends to the outside of the bracket 298, which facilitates the control of the push rod 297 to move. The rotating frame 299 is adapted to the inside of the bracket 298, so that the rotating frame 299 can be driven into the inside of the bracket 298 to form a limit, which can prevent the push rod 297 from rebounding under the action of the spring 296, thereby fixing the push rod 297. A push plate 2910 is slidably connected to the inner wall of the sliding hole 294, and one side of the push plate 2910 is fixedly connected to one end of the push rod 297. The unlocking mechanism 29 also includes a bracket 298 fixed to the outside of the support shell 21. The inner wall of the bracket 298 is slidably connected to the outer surface of the push rod 297. A rotating frame 299 is slidably connected to the inner wall of the bracket 298. The outer surface of the rotating frame 299 is rotatably connected to the outer surface of the push rod 297. In the above embodiment, the push rod 297 drives the push plate 2910 to move, which in turn drives one of the sliders 273 to move. The movement of the slider 273, in conjunction with the second support rod 274 and the ring plate 282, drives the ring plate 282 to rotate. This causes all the linkages 27 to separate the locking plate 26 from the fixed ring 23. The limiting effect formed by the rotating frame 299 entering the bracket 298 releases the locking effect, allowing the worm gear 3 to rotate clockwise.

[0020] Working principle: like Figure 1-7 As shown, during use, when the winch retracts the wire, the worm 3 rotates counterclockwise, causing the shaft 22 to rotate, which in turn drives the fixed ring 23 to rotate. The helical teeth 24 on the fixed ring 23 can push the locking plate 26 to rotate, thus not locking it. That is, the rotation of the locking plate 26 drives the ring plate 282 to rotate through the linkage 27, and the rotation of the ring plate 282 compresses the arc spring 287. When the connection between the worm 3 and the motor is broken, or when the motor is not damaged and cannot drive the worm 3 to rotate, the weight of the object pulled by the winch rope is large, so it will give a reverse force to the shaft of the worm wheel 4, which in turn causes the worm 3 to generate a reverse force. At this time, the ring plate 282 is driven to rotate clockwise by the arc spring 287. The rotation of the ring plate 282 drives the clamping plate 26 to rotate towards the fixed ring 23 through the linkage 27. If the worm 3 rotates in the opposite direction, it will drive the helical tooth 24 to rotate towards the clamping plate 26. If the clamping plate 26 is not in contact with the fixed ring 23, it will be in contact with the fixed ring 23 under the drive of the resistance mechanism 28. That is, the worm 3 will rotate and then be blocked by the clamping plate 26. If the clamping plate 26 is in contact with the fixed ring 23, it will be directly blocked by the clamping plate 26, so that the fixed ring 23 cannot rotate, thereby fixing the shaft 22 to form a reverse self-locking effect. When the winch is releasing the wire, the push rod 297 moves the push plate 2910. The movement of the push plate 2910 moves the slider 273. The movement of the slider 273, through the first support rod 271 and the second support rod 274, causes the locking plate 26 to separate from the fixed ring 23, allowing the helical tooth 24 to rotate. The rotation of the ring plate 282 causes the arc spring 287 to compress. Then, the rotating frame 299 is placed inside the bracket 298, thus completing the unlocking function. When retracting the wire, the rotating frame 299 is moved out of the bracket 298. Then, the push rod 297 moves under the action of the spring 296. The movement of the push rod 297 causes the push plate 2910 to reset. Then, through the arc spring 287, the ring plate 282 rotates. The rotation of the ring plate 282, through the linkage 27, causes the locking plate 26 to contact the fixed ring 23, forming a reverse self-locking function.

Claims

1. A hoist housing reinforced reverse self-locking worm gear reducer, comprising a housing (1), characterized in that: The inner wall of the housing (1) is equipped with a reverse self-locking mechanism (2). Two connecting plates (5) are installed on the outer surface of the reverse self-locking mechanism (2). A worm gear (3) is installed on the inner wall of the housing (1). A worm wheel (4) meshes with the worm gear (3) on the inner wall of the housing (1). The reverse self-locking mechanism (2) includes a support shell (21) fixed between the outer surfaces of the two connecting plates (5). The connecting plates (5) are fixedly connected to the inner wall of the housing (1) by bolts. A shaft (22) is rotatably connected to the inner wall of the support shell (21). One end of the shaft (22) rotatably penetrates to the outside of the support shell (21) and is connected to the worm gear (3) via a flange mechanism. One end is fixedly connected, and a fixing ring (23) is fixedly sleeved on the outer surface of the shaft (22). Multiple helical teeth (24) are fixedly connected to the outer surface of the fixing ring (23). An outer ring (25) is fixedly connected to the inner wall of the support shell (21). Multiple sets of symmetrical clamps (210) are fixedly connected to the inner wall of the outer ring (25). A clamping plate (26) that matches the helical teeth (24) is rotatably connected between the outer surfaces of each set of clamps (210). A linkage component (27) is installed on the outer surface of the clamping plate (26). A resistance mechanism (28) is installed on the outer surface of the shaft (22). An unlocking mechanism (29) is fixedly installed on the outer surface of the shaft (22).

2. The hoist housing reinforced reverse self-locking worm gear reducer according to claim 1, characterized in that: The linkage (27) includes a first support rod (271), a slider (273), and a second support rod (274). Two first rotating balls (272) are fixedly connected to both ends of the first support rod (271), and two second rotating balls (275) are fixedly connected to both ends of the second support rod (274).

3. A hoist housing-reinforced reverse self-locking worm gear reducer according to claim 2, characterized in that: The outer surface of the slider (273) has two first ball grooves, and the inner walls of the two first ball grooves are rotatably connected to the outer surfaces of the first ball (272) and the second ball (275), respectively. The side of the card plate (26) has a second ball groove, and the inner wall of the second ball groove is rotatably connected to the outer surface of the first ball (272).

4. A hoist housing-reinforced reverse self-locking worm gear reducer according to claim 3, characterized in that: The resistance mechanism (28) includes a limiting ring (281) fixed to the outer surface of the shaft (22) and two fixing plates (283) fixed to the inner wall of the support shell (21). The outer surface of the limiting ring (281) is rotatably connected to a ring plate (282). The outer surfaces of the two fixing plates (283) are slidably connected to the outer surface of the ring plate (282). A plurality of third ball grooves are opened on one side of the ring plate (282). The inner wall of the third ball groove is rotatably connected to the outer surface of the second rotating ball (275).

5. A hoist housing-reinforced reverse self-locking worm gear reducer according to claim 4, characterized in that: Two arc holes (284) are provided on one side of the ring plate (282). An arc block (285) is slidably connected to the inner wall of the arc hole (284). An arc rod (286) is fixedly connected to the inner wall of the arc hole (284). One end of the arc rod (286) slides through to the outside of the arc block (285). An arc spring (287) is provided on the outer surface of the arc rod (286). One end of the arc spring (287) is fixedly connected to the inner wall of the arc hole (284), and the other end of the arc spring (287) is fixedly connected to one side of the arc block (285).

6. A hoist housing-reinforced reverse self-locking worm gear reducer according to claim 2, characterized in that: The unlocking mechanism (29) includes a support ring (291) rotatably sleeved on the outer surface of the shaft (22). Multiple limiting members (292) are fixedly connected to the outer surface of the support ring (291). A connecting ring (293) is fixedly connected between the outer surfaces of the multiple limiting members (292). The outer surface of the connecting ring (293) is fixedly connected to the inner wall of the support shell (21). The outer surfaces of each pair of limiting members (292) are slidably connected to the outer surface of the slider (273).

7. A hoist housing-reinforced reverse self-locking worm gear reducer according to claim 6, characterized in that: One of the limiting members (292) has a sliding hole (294) on one side, and a push rod (297) is slidably connected to the inner wall of the sliding hole (294). The push rod (297) slides through to the outside of the support shell (21).

8. A hoist housing-reinforced reverse self-locking worm gear reducer according to claim 7, characterized in that: A fixing rod (295) is fixedly connected to the inner wall of the sliding hole (294). One end of the fixing rod (295) slides through to the outside of the push rod (297). A spring (296) is provided on the outer surface of the fixing rod (295). One end of the spring (296) is fixedly connected to the inner wall of the sliding hole (294), and the other end of the spring (296) is fixedly connected to the outer surface of the push rod (297).

9. A hoist housing-reinforced reverse self-locking worm gear reducer according to claim 7, characterized in that: The inner wall of the sliding hole (294) is slidably connected to a push plate (2910), and one side of the push plate (2910) is fixedly connected to one end of the push rod (297).

10. A hoist housing-reinforced reverse self-locking worm gear reducer according to claim 7, characterized in that: The unlocking mechanism (29) also includes a bracket (298) fixed to the outside of the support shell (21). The inner wall of the bracket (298) is slidably connected to the outer surface of the push rod (297). A rotating frame (299) is slidably connected to the inner wall of the bracket (298). The outer surface of the rotating frame (299) is rotatably connected to the outer surface of the push rod (297).

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