Housing hoisting device for assembling speed reducer

Abstract

The invention discloses a machine shell hoisting device for assembling a speed reducer, and relates to the technical field of hoisting, the machine shell hoisting device comprises a machine shell conveying mechanism, a hoisting table, a hoisting frame and a movable rod, the machine shell conveying mechanism and the hoisting table are arranged below the hoisting frame, a linear moving module is arranged on the hoisting frame, and a slidable moving frame is arranged on the linear moving module; a lifting mechanism is arranged on the movable frame, two parallel supporting frames are fixed to the bottom of the lifting mechanism, a first driving mechanism is fixed to one supporting frame, a locking mechanism is fixed to the other supporting frame, the movable rod comprises a screw part and an inserting part which are integrated, the first driving mechanism is in driving connection with the screw part, and the inserting part is arranged on a hanging ring of the machine shell in a penetrating mode. According to the machine shell hoisting device, the machine shell can be automatically hoisted, and time and labor are saved.

Description

Technical Field

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

[0002] The reducer is a reduction transmission device between the prime mover and the working machine, usually composed of a gear transmission, worm transmission, or gear-worm transmission enclosed in a rigid housing. The assembly accuracy between the housing and the components affects the reduction effect of the reducer, so the housing hoisting process is crucial in the assembly process of the reducer.

[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 swing of the reducer casing to be assembled 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, an object of the present invention is to provide a casing hoisting device for speed reducer assembly, so as to solve the problem that manual assistance is required for casing hoisting during speed reducer assembly.

[0005] The purpose of the present invention is achieved by 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, wherein 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 moving frame, the moving frame is provided with a lifting mechanism, two parallel supporting frames are fixed to the bottom of the lifting mechanism, a first driving mechanism is fixed to one of the supporting frames, and a locking mechanism is fixed to the other supporting 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 inserted into 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 movable ring is fixed at the telescopic end, the locking ring is fixed on one side of the movable ring, the locking sleeve is fixed on the support frame and is sleeved in the movable ring and the locking ring, the locking sleeve includes an integrated locking portion and an extension portion, the inner hole diameter of the locking portion is larger than the inner hole diameter of the extension portion, the outer end of the insertion portion is inserted into the locking sleeve from the locking portion, the locking portion is provided with a plurality of split holes along the axial direction of the locking sleeve, the split holes divide the locking portion 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, an annular guide hole is opened inside the guide ring, 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 supporting frame.

[0010] Furthermore, the insertion portion is provided with a plurality of equidistant 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, the arc-shaped limit block is arranged in the arc-shaped hole in the initial state, 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 driving mechanism includes a second driving motor, a coupling and a first gear, the second driving motor is fixed on the support frame, the output end of the second driving motor is connected to the first gear through the coupling, and the end of the inner rod is fixed with a second gear meshing 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, 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, 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 driving motor, a driving gear, a driven gear, a rotating rod and a guide rail. The first driving 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 rails. The guide rails are 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, and 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. A plurality of 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 reasonably 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 realized by setting the movable rod and the movable rod setting including an integrated screw rod part and an inserting part, thereby saving time and labor. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0020] Figure 3It 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 It 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 diagram of the structure 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] Fig. 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, lifting platform; 3, lifting frame; 4, movable rod; 41, screw rod; 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, supporting 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. Round 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 in conjunction with 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 supporting frames 9 are fixed to the bottom of the lifting mechanism 8, a first driving mechanism 109 is fixed on one supporting frame 9, and a locking mechanism 10 is fixed on the other supporting frame 9, the movable rod 4 comprises 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 inserted into the lifting 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 descending height of the lifting mechanism 8 is set so that the movable rod 4 can be at the same height as the lifting 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 lifting 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 hoisting 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 lifting 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 hoisting. 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 outside the insertion part 42 to increase the friction with the lifting ring and further prevent the casing from shaking.

[0031] refer to Figure 3-6 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 is fixed to the moving ring 102. The locking ring 103 is fixed to one side of the moving ring 102. The locking sleeve 104 is fixed to the support frame 9 and is sleeved in the moving 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, and 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 outer side 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. The balls 106 can roll along the outer wall of the extension portion 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 guide rod 107 to slide. Through this arrangement, the stability of the fixing ring 1021 during movement 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, refer to Fig. 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 arranged in the arc-shaped hole 11 in the initial state. 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 support strength of the insertion part 42. A bearing is provided at the inner end of the inner rod 43, 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 to extend and retract along the radial direction of the inner rod 43 through the transmission mechanism 131. The arc-shaped limit block 135 extends out of the outer surface of the insertion part 42, and 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 driving mechanism 12 includes a second driving motor 121, a coupling and a first gear 122. The second driving motor 121 is fixed on the support frame 9. The output end of the second driving 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 meshing with the first gear 122.

[0039] An extrusion ring 14 is provided on the outer side 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 portion 1041, and the outer end of the inner rod 43 is inserted in the extension portion 1042, further increasing the contact area between the inner rod 43 and the locking mechanism 10 to ensure stability.

[0040] refer to Fig. 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. The circular frame 1311 is provided with an arc-shaped rotating hole 132, which 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. The fixed guide rod 1312 is provided with a guide groove 133 on a side facing the circular frame 1311. The telescopic rod 1313 is sleeved in the guide groove 133 and is confined in the fixed guide rod 1312. The telescopic rod 1313 is provided with a guide block 134, which is confined in the arc-shaped rotating hole 132 and is movable in the arc-shaped rotating hole 132. An arc-shaped limiting 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, the circular frame 1311 is driven to rotate, and the arc-shaped rotating hole 132 on the circular frame 1311 rotates accordingly. The arc-shaped rotating hole 132 gradually extends toward the outer diameter of the circular frame 1311. When the arc-shaped rotating 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 part 42.

[0043] refer to Figure 1 and Figure 2 The linear moving module 5 includes 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 moving 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 arranged on the moving frame 7. Pulleys 56 are arranged at both ends of the rotating rod 54. The pulleys 56 move on the guide rail 55, and the guide rail 55 is fixed on the hanging frame 3. There can be multiple rotating rods 54, and there can be multiple first driving motors 51 correspondingly.

[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 moving 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 moving frame 7. A plurality of rotatable rollers 84 are fixed on the moving 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 when moving.

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

[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 substitutions and improvements made within the spirit and principles of the present invention should fall within the protection scope 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 supporting frames (9) are fixed at the bottom of the lifting mechanism (8), one of the supporting frames (9) is fixed with a first driving mechanism (109), and the other of the supporting frames (9) is fixed with a locking mechanism (10), the movable rod (4) comprises an integrated screw portion (41) and an insertion portion (42), the first driving mechanism (109) is driven to connect the screw portion (41), the insertion portion (42) is inserted into the hanging ring of the casing, and the outer end of the insertion portion (42) can be locked at the position of the locking mechanism (10).

2. A housing hoisting device for assembling a reducer according to claim 1, characterized in that: The locking mechanism (10) comprises a first cylinder (101), a moving ring (102), a locking ring (103) and a locking sleeve (104); the first cylinder (101) is fixed to the support frame (9) and the moving ring (102) is fixed at a telescopic end; the locking ring (103) is fixed to one side of the moving ring (102); the locking sleeve (104) is fixed to the support frame (9) and is sleeved inside the moving ring (102) and the locking ring (103); 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 insertion portion (42) is inserted from the locking portion (1041) into the locking sleeve (104), 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) split the locking portion (1041) into a plurality of locking blocks (1011), and the locking ring (103) presses the locking blocks (1011) while sliding.

3. A housing hoisting device for assembling a reducer according to claim 2, characterized in that: The movable ring (102) comprises an integrated fixed ring (1021) and a guide ring (1022); the locking ring (103) is fixed to 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 provided inside the guide ring (1022); a plurality of balls (106) are defined in the guide hole (105); and the balls (106) are rollable along the outer wall of the extension portion (1042).

4. A housing hoisting device for assembling a reducer according to claim 3, 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).

5. A housing hoisting device for assembling a reducer according to claim 2, characterized in that: The insertion portion (42) is provided with a plurality of equally spaced arc-shaped holes (11) along the length direction; the movable rod (4) further comprises 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) comprise 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; the transmission mechanism (131) is used to drive the arc-shaped limit block (135) to telescope in the radial direction of the inner rod (43).

6. A housing hoisting device for assembling a reducer according to claim 5, 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 on a support frame (9); an output end of the second drive motor (121) is connected to the first gear (122) via a coupling; and a second gear (6) meshing with the first gear (122) is fixed at an end of the inner rod (43).

7. A housing hoisting device for assembling a reducer according to claim 5, characterized in that: The transmission mechanism (131) comprises 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 rotating hole (132) is opened on the circular frame (1311); the arc-shaped rotating 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 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 limited in the arc-shaped rotating hole (132) and is movable in the arc-shaped rotating hole (132); and the arc-shaped limiting block (135) is fixed to the top of the telescopic rod (1313).

8. A housing hoisting device for assembling a reducer according to claim 7, characterized in that: The fixed guide rod (1312) is fixed on the inner wall of the insertion portion (42); each telescopic limit unit (13) comprises two arc-shaped limit blocks (135), four fixed guide rods (1312) and four telescopic rods (1313); two fixed guide rods (1312) and two telescopic rods (1313) jointly support one arc-shaped limit block (135).

9. A 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 moving 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) via a chain; the rotating rod (54) is rotatably arranged on the moving frame (7); pulleys (56) are arranged at both ends of the rotating rod (54); the pulleys (56) move on the guide rail (55); and the guide rail (55) is fixed on the hanging frame (3).

10. A housing hoisting device for assembling a reducer according to claim 1, characterized in that: The lifting mechanism (8) comprises a lifting cylinder (81), a lifting plate (82) and four lifting rods (83); the lifting cylinder (81) is fixed on the moving frame (7) and is telescopically movable upwards, with its telescopic end being 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 moving frame (7); a plurality of rotatable rollers (84) are fixed on the moving frame (7); the rollers (84) are pressed and rolled along the side walls of the lifting rods (83).

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