A casing hoisting device for speed reducer assembly

Abstract

The present invention discloses a casing lifting device for assembling a reducer, which relates to the field of lifting technology and includes a casing conveying mechanism, a lifting platform, a lifting frame and a movable rod. The casing conveying mechanism and the lifting platform are arranged below the lifting frame. A linear moving module is provided on the lifting frame. A slidable moving frame is provided on the linear moving module. A lifting mechanism is provided on the moving frame. Two parallel support frames are fixed to the bottom of the lifting mechanism. A first driving mechanism is fixed on one support frame, and a locking mechanism is fixed on the other support frame. The movable rod includes an integrated screw portion and an insertion portion. The first driving mechanism drives the connecting screw portion. The insertion portion is inserted into the lifting ring of the casing. The outer end of the insertion portion can be locked in the position of the locking mechanism. The casing lifting device can automatically lift the casing, saving time and effort.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting, and in particular to a casing hoisting device for assembling a reducer. Background Art

[0002] A speed reducer is a transmission device that reduces speed between a prime mover and a working machine. It typically consists of a gear, worm, or gear-worm transmission enclosed in a rigid housing. The assembly accuracy between the housing and components impacts the speed reduction performance of the speed reducer, making the housing hoisting process crucial during speed reducer assembly.

[0003] At present, the casing lifting device of the reducer usually requires manual assistance to complete the lifting, which not only wastes manpower but also poses a safety hazard. Chinese patent CN116788983B discloses a casing lifting device for assembling a reducer, which realizes the rigid lifting of the reducer casing to be assembled by passing the pin-type casing lifting ring plunger through the lifting ring of the reducer casing to be assembled and completely positioning the reducer casing to be assembled on the lifting device frame. Although it can avoid the reducer casing to be assembled from swinging during lifting, the action of passing the pin-type casing lifting ring plunger through the lifting ring of the reducer casing to be assembled still requires manual operation, which is time-consuming and labor-intensive. Summary of the Invention

[0004] In view of the defects of the above-mentioned prior art, the purpose of the present invention is to provide a casing hoisting device for speed reducer assembly, which solves the problem that manual assistance is required for casing hoisting during speed reducer assembly.

[0005] The purpose of the present invention is achieved by adopting the following technical solutions:

[0006] A casing lifting device for assembling a reducer comprises a casing conveying mechanism, a lifting platform, a lifting frame and a movable rod, the casing conveying mechanism and the lifting platform are arranged below the lifting frame, the lifting frame is provided with a linear moving module, the linear moving module is provided with a slidable movable frame, the movable frame is provided with a lifting mechanism, two parallel support frames are fixed to the bottom of the lifting mechanism, a first driving mechanism is fixed to one of the support frames, and a locking mechanism is fixed to the other support frame, the movable rod comprises an integrated screw portion and an insertion portion, the first driving mechanism drives and connects the screw portion, the insertion portion is passed through the lifting ring of the casing, and the outer end of the insertion portion can be locked at the position of the locking mechanism.

[0007] Furthermore, the locking mechanism includes a first cylinder, a movable ring, a locking ring and a locking sleeve, the first cylinder is fixed on the support frame and the telescopic end fixes the movable ring, the locking ring is fixed on one side of the movable ring, the locking sleeve is fixed on the support frame and is sleeved on the movable ring and the locking ring, the locking sleeve includes an integrated locking part and an extension part, the inner aperture of the locking part is larger than the inner aperture of the extension part, the outer end of the insertion part is inserted into the locking sleeve from the locking part, the locking part is provided with a plurality of split holes along the axial direction of the locking sleeve, the split holes divide the locking part into a plurality of locking blocks, and the locking ring squeezes the locking blocks while sliding.

[0008] Furthermore, the movable ring includes an integrated fixed ring and a guide ring, the locking ring is fixed on the outside of the fixed ring, the guide ring is arranged on the other side of the fixed ring, the guide ring is sleeved on the extension part, and an annular guide hole is opened inside the guide ring, and a plurality of balls are defined in the guide hole, and the balls can roll along the outer wall of the extension part.

[0009] Furthermore, a guide rod is provided at the bottom of the fixing ring, and a guide hole groove for the guide rod to slide is opened on the support frame.

[0010] Furthermore, the insertion portion is provided with a plurality of equally spaced arc-shaped holes along the length direction; the movable rod also includes an inner rod, the inner end of the inner rod is sleeved in the insertion portion and is rotatable relative to the insertion portion, the outer end of the inner rod extends out of the insertion portion, and a second driving mechanism for driving the inner rod to rotate is fixed on the support frame, and a plurality of telescopic limit units are provided on the inner rod, and the telescopic limit units include a transmission mechanism and an arc-shaped limit block, and the arc-shaped limit block is initially arranged in the arc hole, and the transmission mechanism is used to drive the arc-shaped limit block to extend and retract along the radial direction of the inner rod.

[0011] Furthermore, the second drive mechanism includes a second drive motor, a coupling and a first gear. The second drive motor is fixed on the support frame. The output end of the second drive motor is connected to the first gear through a coupling. The end of the inner rod is fixed with a second gear that meshes with the first gear.

[0012] Furthermore, the transmission mechanism includes a circular frame, a fixed guide rod and a telescopic rod, the circular frame is fixedly sleeved on the inner rod, an arc-shaped rotary hole is provided on the circular frame, and the arc-shaped rotary hole gradually extends toward the outer diameter of the circular frame, the fixed guide rod is rotatably provided in the radial direction of the circular frame, and a guide groove is provided on a side of the fixed guide rod facing the circular frame, the telescopic rod is sleeved in the fixed guide rod, and a guide block is provided on the telescopic rod, the guide block is confined in the arc-shaped rotary hole and is movable in the arc-shaped rotary hole, and the arc-shaped limit block is fixed to the top of the telescopic rod.

[0013] Furthermore, the fixed guide rod is fixed on the inner wall of the insertion portion, and each telescopic limit unit includes two arc-shaped limit blocks, four fixed guide rods and four telescopic rods, and the two fixed guide rods and two telescopic rods jointly support one arc-shaped limit block.

[0014] Furthermore, the linear motion module includes a first drive motor, a driving gear, a driven gear, a rotating rod and a guide rail. The first drive motor is fixed on the mobile frame and is used to drive the driving gear. The driven gear is fixed on the rotating rod and meshes with the driving gear through a chain. The rotating rod is rotatably provided on the mobile frame. Pulleys are provided at both ends of the rotating rod. The pulleys move on the guide rail, and the guide rail is fixed on the hanging frame.

[0015] Furthermore, the lifting mechanism includes a lifting cylinder, a lifting plate and four lifting rods. The lifting cylinder is fixed on the mobile frame and extends upward. Its telescopic end is fixed on the bottom surface of the lifting plate. The lifting rods are fixed at the four corners of the lifting plate. The lifting rods pass through the mobile frame. Several rotatable rollers are fixed on the mobile frame, and the rollers are squeezed and rolled along the side walls of the lifting rods.

[0016] The beneficial effects of the present invention are:

[0017] The present invention provides space and venue for the automation of casing hoisting by rationally arranging the positions of the casing conveying mechanism, the hoisting platform and the hoisting frame; fixes the position of the movable rod by setting a locking mechanism; and automatically hoisting the casing is achieved by setting the movable rod and the movable rod setting including an integrated screw portion and an inserting portion, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the housing hoisting device for assembling the reducer of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the hoisting part of the present invention;

[0020] Figure 3This is a schematic diagram of the installation structure of the movable rod in the present invention;

[0021] Figure 4 It is a structural schematic diagram of the locking mechanism and the second driving mechanism in the present invention;

[0022] Figure 5 This is one of the schematic diagrams of the active state of the locking mechanism in the present invention;

[0023] Figure 6 This is the second schematic diagram of the active state of the locking mechanism in the present invention;

[0024] Figure 7 It is a schematic structural diagram of the mobile ring in the present invention;

[0025] Figure 8 It is a structural exploded view of the movable rod in the present invention;

[0026] Figure 9 It is a structural schematic diagram of the telescopic limiting unit in the present invention.

[0027] In the figure: 1. Casing conveying mechanism; 2. Hoisting platform; 3. Hoisting frame; 4. Movable rod; 41. Screw part; 42. Insertion part; 43. Inner rod; 5. Linear moving module; 51. First driving motor; 52. Driving gear; 53. Driven gear; 54. Rotating rod; 55. Guide rail; 56. Pulley; 6. Second gear; 7. Moving frame; 8. Lifting mechanism; 81. Lifting cylinder; 82. Lifting plate; 83. Lifting rod; 84. Roller; 9. Support frame; 10. Locking mechanism; 101. First cylinder; 102. Moving ring; 1021. Fixed ring; 1022. Guide ring; 103. Locking ring; 10 4. Locking sleeve; 1041. Locking part; 1042. Extension part; 105. Guide hole; 106. Ball; 107. Guide rod; 108. Guide hole groove; 109. First driving mechanism; 1010. Splitting hole; 1011. Locking block; 11. Arc hole; 12. Second driving mechanism; 121. Second driving motor; 122. First gear; 13. Telescopic limit unit; 131. Transmission mechanism; 1311. Circular frame; 1312. Fixed guide rod; 1313. Telescopic rod; 132. Arc rotating hole; 133. Guide groove; 134. Guide block; 135. Arc limit block; 14. Extrusion ring. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects solved by the invention more clearly understood, the invention is further described below with reference to the accompanying drawings and embodiments.

[0029] like Figure 1-9As shown, the present invention provides a casing hoisting device for assembling a reducer, comprising a casing conveying mechanism 1, a hoisting platform 2, a hoisting frame 3 and a movable rod 4. The casing conveying mechanism 1 and the hoisting platform 2 are arranged below the hoisting frame 3. A linear moving module 5 is provided on the hoisting frame 3. A slidable moving frame 7 is provided on the linear moving module 5. A lifting mechanism 8 is provided on the moving frame 7. Two parallel support frames 9 are fixed to the bottom of the lifting mechanism 8. A first driving mechanism 109 is fixed on one support frame 9, and a locking mechanism 10 is fixed on the other support frame 9. The movable rod 4 includes an integrated screw portion 41 and an insertion portion 42. The first driving mechanism 109 drives the connecting screw portion 41. The insertion portion 42 is passed through the hanging ring of the casing, and the outer end of the insertion portion 42 can be locked in the position of the locking mechanism 10.

[0030] According to the type of the casing, the lowering height of the lifting mechanism 8 is set so that the movable rod 4 can be at the same height as the hanging ring of the casing. The screw part 41 is driven by the first driving mechanism 109 so that the insertion part 42 can be inserted into the hanging ring of the casing. When the outer end of the insertion part 42 moves to the position of the locking mechanism 10, the first driving mechanism 109 stops working, the locking mechanism 10 locks the outer end of the insertion part 42, the lifting mechanism 8 starts to rise, and the linear moving module 5 drives the moving frame 7 to move until the casing moves to the lifting platform 2. The locking mechanism 10 is unlocked, and the first driving mechanism 109 drives the screw part 41 in the reverse direction until the hanging ring of the casing is separated from the insertion part 42. The linear moving module 5 drives the moving frame 7 to reset and prepare for the next lifting. The first driving mechanism 109 can adopt existing structures such as motors and worms, which will not be repeated here. The gantry structure is used to transport the casing, which can increase the stability during transportation. A friction layer is provided on the outside of the insertion part 42 to increase the friction with the hanging ring and further prevent the casing from shaking.

[0031] refer to Figure 3-6 The locking mechanism 10 includes a first cylinder 101, a mobile ring 102, a locking ring 103 and a locking sleeve 104. The first cylinder 101 is fixed to the support frame 9 and the telescopic end is fixed to the mobile ring 102. The locking ring 103 is fixed to one side of the mobile ring 102. The locking sleeve 104 is fixed to the support frame 9 and is sleeved in the mobile ring 102 and the locking ring 103. The locking sleeve 104 includes an integrated locking portion 1041 and an extension portion 1042. The inner diameter of the locking portion 1041 is larger than the inner diameter of the extension portion 1042. The extension portion 1042 is fixed on the support frame 9, and the outer end of the insertion portion 42 is inserted into the locking sleeve 104 from the locking portion 1041. The locking portion 1041 is provided with a plurality of split holes 1010 equidistantly along the axial direction of the locking sleeve 104. The split holes 1010 divide the locking portion 1041 into a plurality of locking blocks 1011. The locking ring 103 squeezes the locking blocks 1011 while sliding. The plurality of locking blocks 1011 are independent of each other and have a certain elasticity. The locking blocks 1011 are tightened inwardly under the squeezing of the locking ring 103.

[0032] When the outer end of the insertion part 42 is inserted into the locking part 1041, the first cylinder 101 starts to work, driving the movable ring 102 and the locking ring 103 to move toward the locking part 1041. The locking ring 103 continuously squeezes the locking block 1011 while sliding, so that multiple locking blocks 1011 are squeezed inward at the same time and firmly press the outer end of the insertion part 42, thereby fixing the insertion part 42.

[0033] refer to Figure 7 The movable ring 102 includes an integrated fixed ring 1021 and a guide ring 1022. The locking ring 103 is fixed on the outside of the fixed ring 1021. The guide ring 1022 is arranged on the other side of the fixed ring 1021. The guide ring 1022 is sleeved on the extension part 1042. An annular guide hole 105 is opened inside the guide ring 1022. A plurality of balls 106 are defined in the guide hole 105. The balls 106 can roll along the outer wall of the extension part 1042.

[0034] The fixed ring 1021 can drive the locking ring 103 to move, thereby locking the outer end of the insertion portion 42. The guide ring 1022 rolls on the outer wall of the extension portion 1042 through the ball 106, limiting the moving direction of the movable ring 102 and increasing the stability of the movable ring 102 when moving.

[0035] refer to Figure 4 The bottom of the fixing ring 1021 is provided with a guide rod 107, and the support frame 9 is provided with a guide hole groove 108 for the sliding of the guide rod 107. Through this arrangement, the stability of the fixing ring 1021 when moving is further increased.

[0036] refer to Figure 8 and Figure 4 , the insertion portion 42 is provided with a plurality of equally spaced arc-shaped holes 11 along the length direction; the movable rod 4 also includes an inner rod 43, the inner end of the inner rod 43 is sleeved in the insertion portion 42 and is rotatable relative to the insertion portion 42, the outer end of the inner rod 43 extends out of the insertion portion 42, and a second driving mechanism 12 for driving the inner rod 43 to rotate is fixed on the support frame 9, and a plurality of telescopic limit units 13 are provided on the inner rod 43, Figure 9 The telescopic limit unit 13 includes a transmission mechanism 131 and an arc-shaped limit block 135. The arc-shaped limit block 135 is initially arranged in the arc-shaped hole 11. The transmission mechanism 131 is used to drive the arc-shaped limit block 135 to extend and retract along the radial direction of the inner rod 43.

[0037] The outer wall of the inner rod 43 contacts the inner wall of the movable rod 4 to ensure the supporting strength of the insertion part 42. The inner end of the inner rod 43 is provided with a bearing, and the inner end of the inner rod 43 is rotatably mounted on the insertion part 42 through the bearing. After the locking mechanism 10 locks the outer end of the inner rod 43, the second driving mechanism 12 drives the inner rod 43 to rotate. When the inner rod 43 rotates, the arc-shaped limit block 135 is driven by the transmission mechanism 131 to extend and retract along the radial direction of the inner rod 43. The arc-shaped limit block 135 extends out of the outer surface of the insertion part 42. The hanging ring of the housing is limited or fixed between adjacent arc-shaped limit blocks 135 to prevent the housing from shaking when moving.

[0038] refer to Figure 4 The second drive mechanism 12 includes a second drive motor 121, a coupling and a first gear 122. The second drive motor 121 is fixed on the support frame 9. The output end of the second drive motor 121 is connected to the first gear 122 through a coupling. The end of the inner rod 43 is fixed with a second gear 6 that meshes with the first gear 122.

[0039] An extrusion ring 14 is provided on the outside of the second gear 6, and the extrusion ring 14 is fixed on the inner rod 43. The extrusion ring 14 is locked in the locking part 1041, and the outer end of the inner rod 43 is inserted in the extension part 1042, further increasing the contact area between the inner rod 43 and the locking mechanism 10 to ensure stability.

[0040] refer to Figure 9 The transmission mechanism 131 includes a circular frame 1311, a fixed guide rod 1312 and a telescopic rod 1313. The circular frame 1311 is fixedly sleeved on the inner rod 43. An arc-shaped rotary hole 132 is opened on the circular frame 1311. The arc-shaped rotary hole 132 gradually extends toward the outer diameter of the circular frame 1311. The fixed guide rod 1312 is rotatably arranged in the radial direction of the circular frame 1311. A guide groove 133 is opened on the side of the fixed guide rod 1312 facing the circular frame 1311. The telescopic rod 1313 is sleeved in the guide groove 133 and confined in the fixed guide rod 1312. A guide block 134 is provided on the telescopic rod 1313. The guide block 134 is confined in the arc-shaped rotary hole 132 and is movable in the arc-shaped rotary hole 132. An arc-shaped limit block 135 is fixed to the top of the telescopic rod 1313.

[0041] Furthermore, the fixed guide rod 1312 is fixed on the inner wall of the insertion portion 42 , and each telescopic limit unit 13 includes two arc-shaped limit blocks 135 , four fixed guide rods 1312 and four telescopic rods 1313 , and the two fixed guide rods 1312 and the two telescopic rods 1313 jointly support an arc-shaped limit block 135 .

[0042] When the inner rod 43 rotates, it drives the circular frame 1311 to rotate, and the arc-shaped rotary hole 132 on the circular frame 1311 rotates accordingly. The arc-shaped rotary hole 132 gradually extends toward the outer diameter of the circular frame 1311. When the arc-shaped rotary hole 132 rotates, it drives the guide block 134 to move, and then drives the telescopic rod 1313 to extend upward, thereby realizing that the arc-shaped limit block 135 extends out of the insertion portion 42.

[0043] refer to Figure 1 and Figure 2 The linear motion module 5 includes a first drive motor 51, a driving gear 52, a driven gear 53, a rotating rod 54, and a guide rail 55. The first drive motor 51 is fixed to the mobile frame 7 and is used to drive the driving gear 52. The driven gear 53 is fixed to the rotating rod 54 and meshes with the driving gear 52 through a chain. The rotating rod 54 is rotatably mounted on the mobile frame 7. Pulleys 56 are provided at both ends of the rotating rod 54. The pulleys 56 move on the guide rail 55, and the guide rail 55 is fixed to the hanging frame 3. There can be multiple rotating rods 54, and there can be multiple first drive motors 51 accordingly.

[0044] refer to Figure 2 The lifting mechanism 8 includes a lifting cylinder 81, a lifting plate 82 and four lifting rods 83. The lifting cylinder 81 is fixed on the mobile frame 7 and extends upward. Its telescopic end is fixed on the bottom surface of the lifting plate 82. The four corners of the lifting plate 82 are fixed with lifting rods 83. The lifting rods 83 pass through the mobile frame 7. Several rotatable rollers 84 are fixed on the mobile frame 7. The rollers 84 are squeezed and rolled along the side walls of the lifting rods 83.

[0045] The lifting cylinder 81 drives the lifting plate 82 to move up and down, thereby driving the lifting rod 83 and the support frame 9 to move up and down. The roller 84 can increase the stability of the lifting rod 83 during movement.

[0046] The present invention provides space and venue for the automation of casing lifting by rationally arranging the positions of the casing conveying mechanism 1, the lifting platform 2 and the lifting frame 3; by setting the locking mechanism 10, the position of the movable rod 4 is fixed; by setting the movable rod 4 and setting the movable rod 4 to include an integrated screw portion 41 and an insertion portion 42, automatic lifting of the casing is achieved.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A housing hoisting device for reducing gear assembly, characterized in that: The invention comprises a casing conveying mechanism (1), a hanging platform (2), a hanging frame (3) and a movable rod (4), wherein the casing conveying mechanism (1) and the hanging platform (2) are arranged below the hanging frame (3), the hanging frame (3) is provided with a linear moving module (5), the linear moving module (5) is provided with a slidable moving frame (7), the moving frame (7) is provided with a lifting mechanism (8), two parallel support frames (9) are fixed to the bottom of the lifting mechanism (8), one of the support frames (9) is fixed with a first driving mechanism (109), and the other of the support frames (9) is fixed with a locking mechanism (10), the movable rod (4) comprises an integrated screw portion (41) and an inserting portion (42), the first driving mechanism (109) drives and connects the screw portion (41), the insertion portion (42) is inserted into the hanging ring of the housing, and the outer end of the insertion portion (42) can be locked at the position of the locking mechanism (10); the locking mechanism (10) includes a first cylinder (101), a moving ring (102), a locking ring (103) and a locking sleeve (104), the first cylinder (101) is fixed on the support frame (9) and the telescopic end fixes the moving ring (102), the locking ring (103) is fixed on one side of the moving ring (102), the locking sleeve (104) is fixed on the support frame (9) and is sleeved on the moving ring (102) and the locking ring (103), and the locking sleeve (104) ) comprises an integral locking portion (1041) and an extension portion (1042), the inner diameter of the locking portion (1041) is larger than the inner diameter of the extension portion (1042), the outer end of the inserting portion (42) is inserted into the locking sleeve (104) from the locking portion (1041), the locking portion (1041) is provided with a plurality of split holes (1010) along the axial direction of the locking sleeve (104), the split holes (1010) divide the locking portion (1041) into a plurality of locking blocks (1011), and the locking ring (103) squeezes the locking blocks (1011) while sliding; the inserting portion (42) is provided with a plurality of equally spaced arc holes (11) along the length direction; the movable rod (4 ) also includes an inner rod (43), the inner end of the inner rod (43) is sleeved in the insertion portion (42) and is rotatable relative to the insertion portion (42), the outer end of the inner rod (43) extends out of the insertion portion (42), a second driving mechanism (12) for driving the inner rod (43) to rotate is fixed on the support frame (9), a plurality of telescopic limit units (13) are provided on the inner rod (43), the telescopic limit units (13) include a transmission mechanism (131) and an arc-shaped limit block (135), the arc-shaped limit block (135) is arranged in the arc-shaped hole (11) in an initial state, and the transmission mechanism (131) is used to drive the arc-shaped limit block (135) to telescope along the radial direction of the inner rod (43).

2. A housing hoisting device for assembling a reducer according to claim 1, characterized in that: The movable ring (102) includes an integrated fixed ring (1021) and a guide ring (1022); the locking ring (103) is fixed on the outside of the fixed ring (1021); the guide ring (1022) is arranged on the other side of the fixed ring (1021); the guide ring (1022) is sleeved on the extension portion (1042); an annular guide hole (105) is opened inside the guide ring (1022); a plurality of balls (106) are defined in the guide hole (105); and the balls (106) can roll along the outer wall of the extension portion (1042).

3. A housing hoisting device for assembling a reducer according to claim 2, characterized in that: A guide rod (107) is provided at the bottom of the fixing ring (1021), and a guide hole groove (108) for the guide rod (107) to slide is provided on the support frame (9).

4. A housing hoisting device for assembling a reducer according to claim 1, characterized in that: The second drive mechanism (12) comprises a second drive motor (121), a coupling and a first gear (122); the second drive motor (121) is fixed to the support frame (9); the output end of the second drive motor (121) is connected to the first gear (122) via the coupling; and a second gear (6) meshing with the first gear (122) is fixed to the end of the inner rod (43).

5. The housing hoisting device for assembling a reducer according to claim 1, characterized in that: The transmission mechanism (131) includes a circular frame (1311), a fixed guide rod (1312) and a telescopic rod (1313). The circular frame (1311) is fixedly sleeved on the inner rod (43). The circular frame (1311) is provided with an arc-shaped rotating hole (132). The arc-shaped rotating hole (132) gradually extends toward the outer diameter of the circular frame (1311). The fixed guide rod (1312) is rotatably provided in the radial direction of the circular frame (1311). A guide groove (133) is provided on a side of the fixed guide rod (1312) facing the circular frame (1311); the telescopic rod (1313) is sleeved in the fixed guide rod (1312); a guide block (134) is provided on the telescopic rod (1313); the guide block (134) is confined in the arc-shaped rotary hole (132) and is movable in the arc-shaped rotary hole (132); and the top of the telescopic rod (1313) is fixed with the arc-shaped limiting block (135).

6. A housing hoisting device for assembling a reducer according to claim 5, characterized in that: The fixed guide rod (1312) is fixed on the inner wall of the insertion portion (42); each telescopic limiting unit (13) comprises two arc-shaped limiting blocks (135), four fixed guide rods (1312) and four telescopic rods (1313); the two fixed guide rods (1312) and the two telescopic rods (1313) jointly support one arc-shaped limiting block (135).

7. The housing hoisting device for assembling a reducer according to claim 1, characterized in that: The linear motion module (5) comprises a first driving motor (51), a driving gear (52), a driven gear (53), a rotating rod (54) and a guide rail (55). The first driving motor (51) is fixed on the mobile frame (7) and is used to drive the driving gear (52). The driven gear (53) is fixed on the rotating rod (54) and meshes with the driving gear (52) through a chain. The rotating rod (54) is rotatably provided on the mobile frame (7). Pulleys (56) are provided at both ends of the rotating rod (54). The pulleys (56) move on the guide rail (55). The guide rail (55) is fixed on the hanging frame (3).

8. The housing hoisting device for assembling a reducer according to claim 1, characterized in that: The lifting mechanism (8) includes a lifting cylinder (81), a lifting plate (82) and four lifting rods (83). The lifting cylinder (81) is fixed on the movable frame (7) and is telescopically extended upward. The telescopic end of the lifting cylinder is fixed to the bottom surface of the lifting plate (82). The lifting rods (83) are fixed to the four corners of the lifting plate (82). The lifting rods (83) pass through the movable frame (7). A plurality of rotatable rollers (84) are fixed on the movable frame (7). The rollers (84) are squeezed and rolled along the side walls of the lifting rods (83).

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