Gear reducer

Abstract

The present invention relates to the technical field of reducers, and specifically to a gear reducer, including: a housing, a gear set, and a rotating shaft. A groove is provided at the lower end of the housing, a cam is fixedly connected to the outer wall of one of the rotating shafts, and a push frame is sleeved on the outside of the rotating shaft. The outer wall of the cam is in extrusion contact with the inner wall of the pushing frame, and an extrusion mechanism is installed at the lower end of the pushing frame. When the pushing frame is squeezed, the extrusion mechanism pushes the extrusion mechanism downward, and the extrusion mechanism can squeeze the lubricating oil in the groove. A delivery pipe is provided inside the side wall of the housing, and the lower end of the housing is an inclined structure. The present invention can cooperate with the groove and the delivery pipe to allow the lubricating oil on the lower side of the housing that does not contact the gear to flow to the upper layer of the lubricating oil, thereby increasing the fluidity of the lubricating oil and avoiding the lack of fluidity of the lubricating oil inside the housing and the inability to uniformly contact the gear, resulting in different degrees of aging of the lubricating oil in different areas.

Description

Technical Field

[0001] The present invention relates to the technical field of reducers, and in particular to a gear reducer. Background Art

[0002] Commonly used reducers mainly include ordinary cylindrical gear reducers, worm gear reducers and planetary gear reducers, etc., and the traditional cylindrical gear reducer is a device that uses a gear speed converter to reduce the number of revolutions of the motor to the desired number of revolutions and obtain a larger torque. Among them, when the gear reducer is in use, a large amount of lubricating oil needs to be injected into it to reduce the friction between the contact surfaces of each gear when meshing, so that the gear can work more smoothly and increase the service life of the gear. However, due to the high viscosity of the lubricating oil, most of the lubricating oil will be distributed around the inner wall of the shell under the action of centrifugal force during use, and the amount of lubricating oil actually in contact with the gear is small. In addition, due to the lack of fluidity of the lubricating oil in the gear, the lubricating oil that often contacts the gear and the lubricating oil that does not often contact the gear will have different degrees of aging, making the aging degree of the lubricating oil inside the reducer uneven and the lubricating oil cannot be fully utilized. Summary of the invention

[0003] Technical issues solved

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a gear reducer, which can effectively solve the problem in the prior art that the lubricating oil in the gear reducer has poor fluidity and cannot evenly contact the gears.

[0005] Technical Solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a gear reducer, comprising: a housing, a gear set, and a rotating shaft, characterized in that a groove is provided at the lower end of the housing, a cam is fixedly connected to the outer wall of one of the rotating shafts, and a push frame is sleeved on the outer side of the rotating shaft, the outer wall of the cam is in compression contact with the inner wall of the pushing frame, a pressing mechanism is installed at the lower end of the pushing frame, and the pushing frame pushes the pressing mechanism to move downward when being squeezed by the cam;

[0008] The outer wall of the squeezing mechanism is in sliding contact with the inner wall of the groove, and the squeezing mechanism can squeeze the lubricating oil in the groove;

[0009] A delivery pipe is provided inside the side wall of the shell for delivering lubricating oil. One end of the delivery pipe is connected to the inside of the groove. The output end of the delivery pipe passes through the upper wall of the shell and is connected to the inside of the shell. The lower end inside the shell is an inclined structure.

[0010] Furthermore, the extrusion mechanism includes an extrusion plate, on which a plurality of frames are slidably connected, the frames are elastically connected to the lower end of the extrusion plate via elastic members, a plurality of through holes are provided on the frames, and the lower end of the frames are in extrusion contact with the lower end of the inner wall of the groove.

[0011] Furthermore, a sleeve is fixedly connected to the upper end of one of the frames, a piston rod is fixedly connected to one side of the upper end of the extrusion plate, the outer wall of the piston rod is in sliding contact with the inner wall of the sleeve, a suction pipe is rotatably connected to the upper end of the sleeve, one end of the suction pipe is connected to the inside of the sleeve, a plurality of holes are opened on the surface of the suction pipe, a plurality of sealing plates 1 are slidably connected to the inner wall of one side of the suction pipe relative to the holes, a plurality of sealing plates 2 are slidably connected to the outer wall of the other side of the suction pipe relative to the holes, and both sealing plates 1 and 2 are elastically connected to the suction pipe via elastic members.

[0012] Furthermore, a rotating frame is fixedly connected to the inner wall of the suction pipe, a guide groove is opened at one end of the rotating frame, and the guide groove is a wave-shaped structure. The protrusion on the inner wall of the piston rod is in sliding contact with the inner wall of the guide groove, and the rotating frame can swing back and forth when the piston rod moves.

[0013] Furthermore, a moving frame is fixedly connected to the pushing frame, and an outer wall of the moving frame is in sliding contact with an inner wall of the outer frame.

[0014] Furthermore, a plurality of entry holes are opened at the upper end of the movable frame, a plurality of extrusion holes are opened inside the movable frame, sealing plates three are slidably connected to the positions of the inner part of the movable frame relative to the entry holes, sealing plates four are slidably connected to the positions of the inner part of the movable frame relative to the extrusion holes, and sealing plates three and four are elastically connected to the movable frame through elastic parts.

[0015] Furthermore, a rack is fixedly connected to one side of the shell, and a fixed rod is fixedly connected to the other side of the shell, the rack penetrates the upper end of the movable frame and extends to its lower side, the middle of the movable frame is rotatably connected to a rotating rod, one end of the rotating rod is fixedly connected to a transmission wheel, the rack is meshed with the transmission wheel for transmission, a threaded groove is provided on the outer wall of the rotating rod, a scraper is slidably connected to the inside of the shell, a limiting rod is fixedly connected to the lower end of the scraper, a guide block is slidably connected to the inside of the limiting rod, and a protrusion on the inner wall of the guide block is in sliding contact with the inner wall of the threaded groove.

[0016] Furthermore, a push plate is slidably connected inside the movable frame, and the lower end of the push plate is elastically connected to the movable frame through an elastic member, and the rack and one end of the fixed rod are both slidably connected to an extrusion block, one end of the extrusion block is in extrusion contact with the upper end of the push plate, and the lower end of the extrusion block is elastically connected to one side of the rack through an elastic member.

[0017] Beneficial Effects

[0018] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0019] 1. The present invention can cooperate with the groove and the delivery pipe through the extrusion mechanism arranged inside the shell to allow the lubricating oil that is not in contact with the gear on the lower side of the shell to flow to the upper layer of the lubricating oil, thereby increasing the fluidity of the lubricating oil and avoiding the lubricating oil in the shell having insufficient fluidity and being unable to uniformly contact the gear, resulting in different degrees of aging of the lubricating oil in different areas.

[0020] 2. The frame and the through holes on the frame can make the lubricating oil flow more evenly, and the sleeve and the piston rod can be used to suck in the lubricating oil farther from the groove and then mix it with the lubricating oil closer to the groove, thereby further increasing the fluidity of the lubricating oil inside the shell.

[0021] 3. The guide grooves provided on the rotating frame can make the suction pipe swing back and forth when the piston rod moves, so that the lubricating oil at different positions is sucked into the oil suction pipe, and the lubricating oil in the oil suction pipe is squeezed to different positions, making the lubricating oil more uniform.

[0022] 4. The lubricating oil on the inner wall of the outer shell can be scraped off by the moving frame and the lubricating oil on the inner wall can flow under the action of the inlet hole and the extrusion hole, so as to avoid the lubricating oil adhering to the inner wall and being unable to contact the gear. In addition, the lubricating oil on the upper side of the inner wall of the outer shell can be automatically scraped off by the scraper provided when the moving frame moves. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the extruded plate part of the present invention;

[0027] Figure 4 It is a schematic diagram of the partial structure of the extruded plate of the present invention;

[0028] Figure 5It is a schematic diagram of the disassembly of the extrusion plate, frame, piston rod and sleeve parts of the present invention;

[0029] Figure 6 It is a schematic diagram of the disassembly of the rotating frame and the piston rod structure of the present invention;

[0030] Figure 7 It is a schematic diagram of the cross-sectional structure of the suction pipe of the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the upper part of the moving frame and the pushing frame of the present invention;

[0032] Fig. 9 It is a schematic diagram of the internal structure of the mobile frame of the present invention;

[0033] Fig.10 It is a schematic diagram of the disassembly of the extrusion block, rack and moving frame of the present invention;

[0034] Fig.11 It is a schematic diagram of the disassembly of the extrusion block, the fixed rod and the moving frame of the present invention;

[0035] Fig.12 It is a schematic diagram of the disassembly of the guide block, the limit rod, the rotating rod and the scraper structure of the present invention;

[0036] Fig.13 It is a schematic diagram of the groove and the delivery pipe part of the present invention;

[0037] The numbers in the figure represent: 1-housing; 2-gear set; 3-rotating shaft; 4-groove; 5-cam; 6-pushing frame; 7-conveying pipe; 8-extrusion plate; 9-frame; 901-through hole; 10-sleeve; 11-piston rod; 12-suction tube; 1201-hole; 1202-sealing plate one; 1203-sealing plate two; 13-rotating frame; 1301-guide groove; 14-moving frame; 1401-entry hole; 1402-extrusion hole; 1403-sealing plate three; 1404-sealing plate four; 15-rack; 16-rotating rod; 17-transmission wheel; 18-threaded groove; 19-scraper; 20-limiting rod; 21-guide block; 22-pushing plate; 23-extrusion block; 24-fixing rod. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The present invention will be further described below in conjunction with the embodiments.

[0040] Example:

[0041] According to the attached Figure 1 -Attached Fig.13 As shown, the gear reducer comprises: a housing 1, a gear set 2, and a rotating shaft 3, characterized in that a groove 4 is provided at the lower end of the housing 1, a cam 5 is fixedly connected to the outer wall of one rotating shaft 3, and a push frame 6 is sleeved on the outer side of the rotating shaft 3, the outer wall of the cam 5 is in compression contact with the inner wall of the pushing frame 6, and an extrusion mechanism is installed at the lower end of the pushing frame 6, and the pushing frame 6 pushes the extrusion mechanism to move downward when being squeezed by the cam 5;

[0042] The outer wall of the extrusion mechanism is in sliding contact with the inner wall of the groove 4, and the extrusion mechanism can squeeze the lubricating oil in the groove 4;

[0043] A delivery pipe 7 is provided inside the side wall of the shell 1 for delivering lubricating oil. One end of the delivery pipe 7 is connected to the inside of the groove 4. The output end of the delivery pipe 7 passes through the upper wall of the shell 1 and is connected to the inside of the shell 1. The lower end inside the shell 1 is an inclined structure.

[0044] Specifically, the extrusion mechanism includes an extrusion plate 8, on which a plurality of frames 9 are slidably connected, the frames 9 being elastically connected to the lower end of the extrusion plate 8 through elastic members, the frames 9 being provided with a plurality of through holes 901, and the lower end of the frames 9 being in extrusion contact with the lower end of the inner wall of the groove 4. When the extrusion plate 8 moves relative to the frames 9, the lubricating oil in the groove 4 can be squeezed so that it all flows toward the inlet direction of the delivery pipe 7, and the lubricating oil flows from all directions of the groove 4 to the gaps between the frames 9 and the through holes 901, and is blocked by the frames 9 and guided by the through holes 901 to mix together, so that the lubricating oil is more fully mixed and the lubricating oil can be more uniform.

[0045] Furthermore, a sleeve 10 is fixedly connected to the upper end of one of the frames 9, a piston rod 11 is fixedly connected to one side of the upper end of the extrusion plate 8, the outer wall of the piston rod 11 is in sliding contact with the inner wall of the sleeve 10, a suction pipe 12 is rotatably connected to the upper end of the sleeve 10, one end of the suction pipe 12 is connected to the inside of the sleeve 10, a plurality of holes 1201 are opened on the surface of the suction pipe 12, a plurality of sealing plates 1202 are slidably connected to the inner wall of one side of the suction pipe 12 relative to the position of the holes 1201, a plurality of sealing plates 2 1203 are slidably connected to the outer wall of the other side of the suction pipe 12 relative to the position of the holes 1201, and both the sealing plates 1202 and 1203 are elastically connected to the suction pipe 12 through elastic members. When the pressure in the suction tube 12 becomes smaller, the sealing plate 1202 can move under the pressure of the lubricating oil outside the suction tube 12 so that part of the holes 1201 are opened, and when the piston rod 11 squeezes the lubricating oil in the sleeve 10, the lubricating oil in the suction tube 12 can squeeze the sealing plate 2 1203 so that the sealing plate 2 1203 moves, thereby opening another part of the holes 1201, and the lubricating oil inside it can flow out from the inside.

[0046] Furthermore, the inner wall of the suction pipe 12 is fixedly connected with a rotating frame 13, and a guide groove 1301 is provided at one end of the rotating frame 13. The guide groove 1301 is a wave-shaped structure, and the protrusion on the inner wall of the piston rod 11 is in sliding contact with the inner wall of the guide groove 1301. When the piston rod 11 moves, the rotating frame 13 can be reciprocated. When the piston rod 11 descends or rises, the protrusion can squeeze the inner wall of the guide groove 1301 to make the rotating frame 13 reciprocate.

[0047] Furthermore, a moving frame 14 is fixedly connected to the push frame 6, and the outer wall of the moving frame 14 is in sliding contact with the inner wall of the outer frame. When the moving frame 14 moves up and down, it can scrape the lubricating oil on the inner wall of the housing 1 to prevent the lubricating oil from adhering to the inner wall and not contacting the gear.

[0048] It is worth noting that a plurality of inlet holes 1401 are provided at the upper end of the moving frame 14, a plurality of extrusion holes 1402 are provided inside the moving frame 14, and sealing plates 3 1403 are slidably connected to the positions of the inside of the moving frame 14 relative to the inlet holes 1401, and sealing plates 4 1404 are slidably connected to the positions of the inside of the moving frame 14 relative to the extrusion holes 1402, and both sealing plates 3 1403 and 4 1404 are elastically connected to the moving frame 14 through elastic members. When negative pressure is formed inside the moving frame 14, the sealing plate 3 1403 can move so that the inlet holes 1401 are opened, so that the lubricating oil on the upper side thereof can flow into the moving frame 14, and when the lubricating oil inside the moving frame 14 is squeezed, the sealing plate 4 1404 can move so that the extrusion holes 1402 are opened, and at this time, the lubricating oil inside the moving frame 14 can be sprayed out from the inside thereof and impact the surrounding lubricating oil.

[0049] It is worth noting that a rack 15 is fixedly connected to one side of the housing 1, and a fixed rod 24 is fixedly connected to the other side of the housing 1. The rack 15 penetrates the upper end of the moving frame 14 and extends to its lower side. A rotating rod 16 is rotatably connected to the middle of the moving frame 14. A transmission wheel 17 is fixedly connected to one end of the rotating rod 16. The rack 15 and the transmission wheel 17 are meshed and transmitted. A thread groove 18 is provided on the outer wall of the rotating rod 16. A scraper 19 is slidably connected to the housing 1. A limit rod 20 is fixedly connected to the lower end of the scraper 19. A guide block 21 is slidably connected to the limit rod 20. The protrusion on the inner wall of the guide block 21 is in sliding contact with the inner wall of the thread groove 18. When the rotating rod 16 rotates, the protrusion on the guide block 21 can move along the direction of the rotating rod 16 when squeezed by the thread groove 18, and then the scraper 19 can be moved through the limit rod 20. In the process of the moving frame 14 and the rotating rod 16 rising, the guide block 21 can rise along the direction of the limit rod 20.

[0050] On the basis of the above scheme, a push plate 22 is slidably connected inside the moving frame 14, and the lower end of the push plate 22 is elastically connected to the moving frame 14 through an elastic member. Under the action of the elastic member, the push plate 22 can move upward relative to the direction of the moving frame 14, and the rack 15 and one end of the fixed rod 24 are slidably connected with an extrusion block 23, which can move relative to the direction of the rack 15 and the fixed rod 24. One end of the extrusion block 23 is in extrusion contact with the upper end of the push plate 22, and the lower end of the extrusion block 23 is elastically connected to one side of the rack 15 through an elastic member. Under the action of the elastic member, the extrusion block 23 can squeeze the upper end of the push plate 22, so that the push plate 22 can generate a speed difference with the moving frame 14 when moving. During the rising process of the moving frame 14, the extrusion block 23 will rise in the direction of the rack 15 under the action of the pushing plate 22, and can give pressure to the pushing plate 22 under the action of the elastic member, so that the pushing plate 22 can descend relative to the moving frame 14 during the rising process of the moving frame 14, thereby forming a negative pressure inside the moving frame 14, and at this time, the sealing plate three 1403 can be moved, so that the lubricating oil on the side of the inner wall of the outer shell 1 can flow into the moving frame 14 through the inlet hole 1401, and when the moving frame 14 descends, the pushing plate 22 can rise in the direction of the outer frame under the action of the elastic member on the lower side of the pushing plate 22, and then can squeeze the lubricating oil in the moving frame 14, so that the sealing plate four 1404 can be moved under the action of pressure, thereby opening the extrusion hole 1402, and then the lubricating oil inside the moving frame 14 can flow out from the inside.

[0051] When the device is working, the rotation of the rotating shaft 3 can make the cam 5 rotate, and the rotation of the cam 5 can squeeze the inner wall of one side of the push frame 6, so that the push frame 6 can move up and down, and when the push frame 6 moves downward, the squeezing plate 8 can be lowered, and when the squeezing plate 8 is lowered, the frame 9 can be lowered under the action of the elastic member, and when the lower end of the frame 9 fits with the inner wall of the groove 4, the squeezing plate 8 continues to descend to squeeze the lubricating oil in the groove 4, and at this time, the lubricating oil can flow from the gap between the through hole 901 and each frame 9 into the delivery pipe 7, and then under the action of the delivery pipe 7, the lubricating oil can be transported to the upper side of the inside of the shell 1 and fall, and when the squeezing plate 8 moves relative to the frame 9, the squeezing plate 8 drives the piston rod 11 to descend, which can engage the matching sleeve 10 so that the sleeve 10 forms negative pressure inside, at this time, the sealing plate 1202 can move so that part of the hole 1201 is opened, so that the lubricating oil outside the suction pipe 12 can be sucked into the suction pipe 12, and then the squeezing plate 8 cam 5 squeezes the pushing frame 6 to move upward, and the squeezing plate 8 moves upward. Under the action of the elastic member, the squeezing plate 8 first moves upward relative to the frame 9, and at this time, the piston rod 11 can squeeze the lubricating oil in the sleeve 10 and the suction pipe 12, so that the sealing plate 2 1203 is squeezed and moved, so that the lubricating oil in the suction pipe 12 can flow out from the hole 1201, and when the piston rod 11 moves up and down, the protrusion on the inner wall of the piston rod 11 can squeeze the inner wall of the guide groove 1301, so that the rotating frame 13 The reciprocating swing of the rotating frame 13 can make the suction pipe 12 reciprocate, so that the position of the suction pipe 12 can be adjusted, wherein, when the extrusion plate 8 is disengaged from the groove 4 and is located on the upper side of the groove 4, the lubricating oil located on the lower side of the inner part of the shell 1 can flow into the inner part of the groove 4, wherein, during the rising process of the pushing frame 6, the pushing frame 6 can drive the moving frame 14 to rise, and when the moving frame 14 rises, the transmission wheel 17 can mesh with the rack 15 and rotate, and the rotation of the transmission wheel 17 can drive the rotating rod 16 to rotate, and the rotation of the rotating rod 16 can make the guide block 21 move along the direction of the rotating rod 16 under the action of the thread groove 18, and as the moving frame 14 rises, the guide block 21 will rise along the direction of the limit rod 20, wherein, when the guide block 21 moves along the rotating rod 16 When the moving rod 16 moves in the direction of the moving rod 16, the scraper 19 can move. The movement of the scraper 19 can scrape the lubricating oil on the upper end of the inner wall of the shell 1, so that the lubricating oil on the upper end of the inner wall of the shell 1 falls, and in the rising process of the moving frame 14, the extrusion block 23 will rise along the direction of the rack 15 and the fixed rod 24 under the action of the pushing plate 22, and can give pressure to the pushing plate 22 under the action of the elastic member, so that the pushing plate 22 can descend relative to the moving frame 14 during the rising process of the moving frame 14, so that negative pressure can be formed inside the moving frame 14, and at this time, the sealing plate 3 1403 can be moved, so that the lubricating oil on the side of the inner wall of the shell 1 can flow into the inside of the moving frame 14 through the inlet hole 1401, and when the moving frame 14 descends,Under the action of the elastic member on the lower side of the push plate 22, the push plate 22 can be raised along the direction of the outer frame, and then the lubricating oil in the moving frame 14 can be squeezed, so that the sealing plate 1404 can be moved under the pressure, so as to open the extrusion hole 1402, and then the lubricating oil inside the moving frame 14 can be sprayed out from the inside, wherein, when the moving frame 14 descends, the transmission wheel 17 and the rotating rod 16 of the rack 15 can rotate in the opposite direction so that the guide block 21 and the scraper 19 can move to the initial position.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. Gear reducer, including: A housing (1), a gear set (2), and a rotating shaft (3), characterized in that a groove (4) is provided at the lower end of the housing (1), a cam (5) is fixedly connected to the outer wall of one of the rotating shafts (3), and a push frame (6) is sleeved on the outer side of the rotating shaft (3), the outer wall of the cam (5) is in compression contact with the inner wall of the push frame (6), and a compression mechanism is installed at the lower end of the push frame (6), and the push frame (6) pushes the compression mechanism to move downward when being compressed by the cam (5); The outer wall of the extrusion mechanism is in sliding contact with the inner wall of the groove (4), and the extrusion mechanism is capable of extruding the lubricating oil in the groove (4); A delivery pipe (7) is provided through the side wall of the housing (1), and the delivery pipe (7) is used to deliver lubricating oil. One end of the delivery pipe (7) is connected to the inside of the groove (4), and the output end of the delivery pipe (7) passes through the upper wall of the housing (1) and is connected to the inside of the housing (1). The lower end of the inside of the housing (1) is an inclined structure. The extrusion mechanism comprises an extrusion plate (8), a plurality of frames (9) being slidably connected to the extrusion plate (8), the frames (9) being elastically connected to the lower end of the extrusion plate (8) via elastic members, a plurality of through holes (901) being formed on the frames (9), and the lower ends of the frames (9) being in extrusion contact with the lower ends of the inner walls of the grooves (4).

2. The gear reducer according to claim 1, characterized in that: A sleeve (10) is fixedly connected to the upper end of one of the frames (9), a piston rod (11) is fixedly connected to one side of the upper end of the extrusion plate (8), the outer wall of the piston rod (11) is in sliding contact with the inner wall of the sleeve (10), the upper end of the sleeve (10) is rotatably connected to a suction pipe (12), one end of the suction pipe (12) is connected to the inside of the sleeve (10), a plurality of holes (1201) are provided on the surface of the suction pipe (12), a plurality of sealing plates (1202) are slidably connected to the inner wall of one side of the suction pipe (12) relative to the hole (1201), a plurality of sealing plates (1203) are slidably connected to the outer wall of the other side of the suction pipe (12) relative to the hole (1201), and the sealing plates (1202) and (1203) are elastically connected to the suction pipe (12) via elastic members.

3. The gear reducer according to claim 2, characterized in that: The inner wall of the suction pipe (12) is fixedly connected to a rotating frame (13); a guide groove (1301) is provided at one end of the rotating frame (13); the guide groove (1301) is a wave-shaped structure; a protrusion on the inner wall of the piston rod (11) is in sliding contact with the inner wall of the guide groove (1301); and when the piston rod (11) moves, the rotating frame (13) can be caused to swing back and forth.

4. The gear reducer according to claim 1, characterized in that: A moving frame (14) is fixedly connected to the pushing frame (6), and an outer wall of the moving frame (14) is in sliding contact with an inner wall of the outer frame.

5. The gear reducer according to claim 4, characterized in that: The upper end of the movable frame (14) is provided with a plurality of entry holes (1401), the inner side of the movable frame (14) is provided with a plurality of extrusion holes (1402), the inner side of the movable frame (14) is slidably connected to a sealing plate three (1403) at positions relative to the entry holes (1401), and the inner side of the movable frame (14) is slidably connected to a sealing plate four (1404) at positions relative to the extrusion holes (1402), and the sealing plate three (1403) and the sealing plate four (1404) are elastically connected to the movable frame (14) via elastic members.

6. The gear reducer according to claim 5, characterized in that: A rack (15) is fixedly connected to one side of the housing (1), and a fixed rod (24) is fixedly connected to the other side of the housing (1). The rack (15) passes through the upper end of the moving frame (14) and extends to the lower side thereof. A rotating rod (16) is rotatably connected to the middle of the moving frame (14). One end of the rotating rod (16) is fixedly connected to a transmission wheel (17). The rack (15) and the transmission wheel (17) are meshed for transmission. A threaded groove (18) is provided on the outer wall of the rotating rod (16). A scraper (19) is slidably connected to the inside of the housing (1). A limit rod (20) is fixedly connected to the lower end of the scraper (19). A guide block (21) is slidably connected to the inside of the limit rod (20). A protrusion on the inner wall of the guide block (21) is in sliding contact with the inner wall of the threaded groove (18).

7. The gear reducer according to claim 6, characterized in that: A push plate (22) is slidably connected inside the moving frame (14), and the lower end of the push plate (22) is elastically connected to the moving frame (14) via an elastic member. The rack (15) and one end of the fixed rod (24) are both slidably connected to an extrusion block (23), one end of the extrusion block (23) is in extrusion contact with the upper end of the push plate (22), and the lower end of the extrusion block (23) is elastically connected to one side of the rack (15) via an elastic member.

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