CN219950300U - Rotary cover moving machine - Google Patents

Abstract

The utility model discloses a rotary cover moving machine, belongs to the field of cover moving machines, and can solve the problems that when a load is lifted to be fixed, the requirement on the driving structure capacity of a hydraulic motor is high and the bearing stability of an equipment body is limited due to the limitation of the structure of the conventional rotary cover moving machine. The rotary cover moving machine comprises a lifting mechanism, a rotary mechanism and a base assembly; the rear end of the lifting mechanism is connected with the slewing mechanism and can rotate under the drive of the slewing mechanism; the rotary mechanism comprises a rotary structure, a driving structure, a bearing and a rotary large gear ring; the lower end of the rotary structure is fixedly connected with the rotary large gear ring and is assembled and connected with the base through a bearing; the driving structure comprises a driving piece and a pinion; the main body of the driving piece is assembled and fixed with the base; the pinion is sleeved on the output shaft of the driving piece and meshed with the rotary large gear ring. The utility model reduces the requirement on the capability of the driving structure, and the equipment body has better bearing stability.

Description

Rotary cover moving machine

Technical Field

The utility model relates to the technical field of cover moving machines, in particular to a rotary cover moving machine.

Background

With the development of the national iron and steel industry, in order to solve the problem that a large amount of molten iron and dust splashes after the front opening of a blast furnace, burn accidents are reduced, the environmental level of the blast furnace is improved, the operating conditions and the dust removal effect of a tap hole area and a tuyere area are improved, and in the construction of a medium-large-sized blast furnace, the use of a trench cover is increased so as to prevent the molten iron and the dust from splashing during tapping. In order not to affect the tap hole opening operation, the main trench cover positioned at the forefront end needs to be removed during the operation of the stokehold mud cannon and the tapping machine, and the special equipment for moving the main trench cover is a cover moving machine.

The full-hydraulic floor rotary cover moving machine is one of the common cover moving machines. At present, the full-hydraulic floor rotary cover moving machine adopts a hydraulic motor driving structure to drive a rotary base to realize the rotation of the cover moving machine. The hydraulic motor driving structure is arranged at the rotation center of the full-hydraulic floor-type rotary cover moving machine and is limited by the structure of the full-hydraulic floor-type rotary cover moving machine, and when a lifting load is fixed, the hydraulic motor driving structure has higher requirement on the capacity of the hydraulic motor driving structure, and the bearing stability of the equipment body is limited.

Disclosure of Invention

The embodiment of the utility model provides a rotary cover moving machine, which can solve the problems that the existing rotary cover moving machine is limited by a self structure, has higher requirement on the capability of a hydraulic motor driving structure when lifting a load, and has limited bearing stability of a device body.

The embodiment of the utility model provides a rotary cover moving machine, which comprises a lifting mechanism, a rotary mechanism and a base assembly; the rear end of the lifting mechanism is connected with the slewing mechanism and can rotate under the drive of the slewing mechanism; the rotary mechanism comprises a rotary structure, a driving structure, a bearing and a rotary large gear ring; the lower end of the rotary structure is fixedly connected with the rotary large gear ring and is assembled and connected with the base through the bearing; the drive structure includes a drive member and a pinion gear; the main body of the driving piece is assembled and fixed with the base; the pinion is sleeved on the output shaft of the driving piece and meshed with the rotary large gear ring.

In one possible implementation, the rotating structure includes a barrel and two first fixed ears; the lower ends of the two first fixing lugs are respectively and fixedly arranged on opposite side walls of the upper end of the cylinder body, the upper end of the first fixing lugs are hinged with the rear end of the lifting mechanism, and the rear end of the lifting mechanism is positioned between the two first fixing lugs.

In one possible implementation, the swing mechanism further comprises a balance support structure; the balance support structure is arranged on the rotating structure and used for keeping balance of the rotating structure.

In one possible implementation, the balance support structure includes a fixed plate, a fixed barrel, a balance support plate, and two balance shafts; the fixed plate is fixed with the upper end of the rotating structure; the lower end of the fixed cylinder is fixed with the upper surface of the fixed plate; the balance supporting plate is V-shaped; the surface of the bottom of the V shape is fixed with the upper end surface of the fixed cylinder, and the top is fixed with one end of one balance shaft respectively; the other ends of the two balance shafts are respectively connected with the base in an assembling way.

In one possible implementation, the driving structure further includes a mounting adjustment seat; the installation adjusting seat comprises an installation cylinder and a fixed ring piece; the mounting cylinder is sleeved on the driving piece; the inner side wall of the fixed ring piece is integrally connected with the outer side wall of the mounting cylinder; the base is provided with a mounting blind hole which is recessed downwards from the upper surface, and the lower end of the mounting cylinder is clamped and fixed in the mounting blind hole; the fixed ring piece is assembled and fixed with the base.

In one possible implementation, the drive structure further comprises a gland; the gland comprises a cover body and a connecting shaft; the cover body is sleeved at the front end of the output shaft of the driving piece; one end of the connecting shaft is integrally connected with the end face, deviating from the output shaft, of the cover body, and the other end of the connecting shaft is fixedly assembled with the base.

In one possible implementation, the drive structure further comprises an eccentric sleeve; the eccentric sleeve is sleeved at the other end of the connecting shaft and is clamped in an adjusting hole in the base assembly.

In one possible implementation, the lifting mechanism includes a lifting cylinder, a fixed shaft, two lifting arms, two second fixing lugs, two fixing sheets and two hooks; the two lifting arms are arranged in parallel, an installation gap is formed between the side surfaces of the two lifting arms, the front ends of the two lifting arms are respectively fixed with one hook, and the rear ends of the two lifting arms are connected with the slewing mechanism; the fixed shaft is arranged in the installation gap, and two ends of the fixed shaft are respectively fixed with the side walls of the two lifting arms; the two fixing pieces are arranged in the mounting gap, and one end face of each fixing piece is fixed with the side walls of the two lifting arms respectively; the two second fixing lugs are arranged in parallel, the upper parts of the two second fixing lugs extend out of the upper end faces of the lifting arms, one ends of the two second fixing lugs are fixed with the fixing shafts, and the other ends of the two second fixing lugs are fixed with the surfaces of the other ends of the fixing pieces respectively; one end of the lifting oil cylinder is connected with the upper part, and the other end of the lifting oil cylinder is connected with the slewing mechanism.

In one possible implementation, the bearing is a tapered roller bearing

One or more technical solutions provided in the embodiments of the present utility model at least have the following technical effects or advantages:

the embodiment of the utility model provides a rotary cover moving machine which comprises a lifting mechanism, a rotary mechanism and a base assembly. The rear end of the lifting mechanism is connected with the slewing mechanism and can rotate under the drive of the slewing mechanism. The slewing mechanism comprises a rotating structure, a driving structure, a bearing and a slewing big gear ring. The lower end of the rotary structure is fixedly connected with the rotary large gear ring and is assembled and connected with the base through a bearing. The drive structure includes a drive member and a pinion gear. The main body of the driving piece is assembled and fixed with the base. The pinion is sleeved on the output shaft of the driving piece and meshed with the rotary large gear ring.

According to the rotary cover moving machine provided by the embodiment of the utility model, the external teeth are driven to be meshed and transmitted through the driving structure, so that the load capacity is high, the transmission precision is high, the requirement on the driving structure capacity is reduced, the lubricating device during gear meshing is facilitated, and the maintenance and operation are convenient. The driving structure is external and fixedly installed, is not limited by space and operation structure, is convenient to overhaul and maintain, and has simple pipeline arrangement and high reliability. Meanwhile, under the condition that the bearing tipping capability of the rotary structure is close, the force arm of the pinion is increased, equipment capability optimization can be achieved, and the bearing stability of the equipment body is good. The rotary cover moving machine has simple integral structure, external rod pieces of all mechanisms and convenient operation and maintenance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments of the present utility model will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a rotary cover moving machine according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a driving structure according to an embodiment of the present utility model;

FIG. 3 is a front view of a portion of the structure of a lifting mechanism according to an embodiment of the present utility model;

FIG. 4 is a top view of a portion of a lifting mechanism according to an embodiment of the present utility model;

FIG. 5 is a front view of a rotary structure according to an embodiment of the present utility model;

FIG. 6 is a top view of a rotary structure according to an embodiment of the present utility model;

FIG. 7 is a front view of a balanced support structure provided by an embodiment of the present utility model;

FIG. 8 is a top view of a balanced support structure provided by an embodiment of the present utility model;

FIG. 9 is a front view of a slewing ring gear provided in an embodiment of the present utility model;

FIG. 10 is a top view of a slewing ring gear provided in an embodiment of the present utility model;

FIG. 11 is a front view of a stationary base according to an embodiment of the present utility model;

fig. 12 is a top view of a fixing base provided in an embodiment of the present utility model.

Icon: 1-a lifting mechanism; 11-lifting oil cylinder; 12-balancing valves; 13-a fixed shaft; 14-lifting arms; 15-a second fixed ear; 16-fixing sheets; 17-hooking; 2-a slewing mechanism; 21-a rotating structure; 211-a cylinder; 212-a first fixed ear; 213-a third securing ear; 22-drive structure; 221-a driver; 222-pinion gear; 223-mounting an adjusting seat; 2231-mounting cylinder; 2232-securing ring piece; 224-gland; 2241-cover; 2242-connecting shaft; 225-eccentric sleeve; 23-turning a large gear ring; 231-keyway; 24-balancing a support structure; 241-a fixed plate; 242-fixing the cylinder; 243-balancing the support plate; 244-balance shaft; 245-reinforcing plates; 3-assembling a base; 31-a fixed base; 311-mating holes; 312-connecting holes; 313-adjustment hole; 32-a central axis; 33-mounting plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

Referring to fig. 1, the rotary cap moving machine provided by the embodiment of the utility model comprises a lifting mechanism 1, a rotary mechanism 2 and a base assembly 3. As shown in fig. 1, 11 and 12, the base assembly 3 includes a fixed base 31, a center shaft 32, a mounting plate 33 and a buffer device. The fixed base 31 is mounted on a foundation or a mounting base, and can connect the rotary lid-moving machine to the foundation. As shown in fig. 12, the fixing base 31 is provided with a fitting hole 311, and the center shaft 32 is provided in the fitting hole 311 and fixedly connected to the fixing base 31 by welding.

The rear end of the lifting mechanism 1 is connected with the slewing mechanism 2 and can rotate under the drive of the slewing mechanism 2. As shown in fig. 1 and 2, the swing mechanism 2 includes a rotating structure 21, a driving structure 22, bearings, and a swing ring gear 23. The lower end of the rotary structure 21 is fixedly connected with the rotary large gear ring 23 and is connected with the base assembly 3 through a bearing. Specifically, the inner hole of the bearing is sleeved on the central shaft 32 of the base assembly 3, and the outer side wall is clamped on the inner hole of the rotary large gear ring 23.

Referring to fig. 2, the driving structure 22 includes a driving member 221 and a pinion gear 222. Alternatively, the driving member 221 is a hydraulic motor. The body of the driving member 221 is fixed to the base assembly 3. Specifically, the main body of the driving member 221 is fixed to the mounting plate 33 of the base assembly 3. The pinion gear 222 is sleeved on the output shaft of the driving member 221 and meshed with the slewing ring gear 23. Pinion 222 is splined to the output shaft of drive member 221. During back running, the driving piece 221 drives the pinion gear 222 to rotate, the pinion gear 222 is meshed with the rotary bull gear 23 to drive the rotary structure 21 to rotate, and the lifting mechanism 1 is connected with the rotary structure 21, so that the lifting mechanism 1 is driven to realize the rotary function.

The rotary cover moving machine provided by the embodiment of the utility model drives the external teeth to be meshed and transmitted through the driving structure 22, has strong load capacity and high transmission precision, reduces the requirement on the capacity of the driving structure 22, is beneficial to arranging a lubricating device during gear meshing, and is convenient for maintenance and operation. The driving structure 22 is externally arranged and fixedly installed, is not limited by space and operation structure, is convenient to overhaul and maintain, and has simple pipeline arrangement and high reliability. Meanwhile, under the condition that the bearing tipping capability of the rotary structure is close, the force arm of the pinion 222 is increased, equipment capability optimization can be achieved, and the bearing stability of the equipment body is good. The rotary cover moving machine has simple integral structure, external rod pieces of all mechanisms and convenient operation and maintenance.

As shown in fig. 1, 5 and 6, the rotating structure 21 includes a cylinder 211 and two first fixing lugs 212. The lower ends of the two first fixing lugs 212 are respectively fixedly arranged on opposite side walls of the upper end of the cylinder 211, the upper end is hinged with the rear end of the lifting mechanism 1, and the rear end of the lifting mechanism 1 is positioned between the two first fixing lugs 212, so that the rear end of the lifting mechanism 1 can be firmly connected with the rotating structure 21.

In practice, the lower bottom surface of the cylinder 211 is fixedly connected to the rotary gearwheel by means of bolts. As shown in fig. 9 and 10, four key grooves 231 are provided along the inner hole annular array of the slewing ring gear 23, the key grooves 231 being recessed downward from the upper surface of the slewing ring gear 23. The positioning and torque transmission of the cylinder 211 and the slewing ring gear 23 are realized by arranging keys in the key grooves 231. The cylinder 211 is provided with a mechanical limiting structure, so that inertial impact during rotation of the rotation mechanism 2 can be effectively relieved.

Referring to fig. 1, 7 and 8, the swing mechanism 2 further includes a balance support structure 24. A balancing support structure 24 is provided on the rotating structure 21 for balancing the rotating structure 21. The arrangement of the balance supporting mechanism can ensure the bearing capacity of the rotary cover moving machine and the integral rigidity of the rotary cover moving machine.

With continued reference to fig. 1, 7 and 8, the balance support structure 24 includes a fixed plate 241, a fixed cylinder 242, a balance support plate 243, and two balance shafts 244. The fixing plate 241 is fixed to the upper end of the rotating structure 21. When the rotary structure 21 includes the cylinder 211, the upper plane of the cylinder 211 is fastened to the fixing plate 241 by bolts.

The lower end of the fixing cylinder 242 is fixed to the upper surface of the fixing plate 241. As shown in fig. 8, the balance support plate 243 has a V-shape. The surface of the bottom of the V-shape is fixed to the upper end surface of the fixed cylinder 242, and the top is fixed to one end of a balance shaft 244, respectively. The other ends of the two balance shafts 244 are respectively connected with the base assembly 3, and the two balance shafts 244 are symmetrically arranged, so that the whole tipping bearing capacity of the rotary cover moving machine can be enhanced. As shown in fig. 12, the fixing base 31 is provided with two connection holes 312, and the other ends of the two balance shafts 244 are respectively disposed in the connection holes 312.

As shown in fig. 7, the reinforcing plates 245 are further disposed in an annular array on the outer peripheral wall of the fixing cylinder 242, so that the stability of the balance support structure 24 can be improved.

As shown in fig. 1 and 2, the drive structure 22 further includes a mounting adjustment seat 223. The mounting adjustment seat 223 includes a mounting barrel 2231 and a retaining ring piece 2232. The mounting cylinder 2231 is sleeved on the driving member 221. The inner side wall of the fixing ring piece 2232 is integrally connected with the outer side wall of the mounting cylinder 2231. The base assembly 3 is provided with a mounting blind hole recessed downward from the upper surface, specifically, the mounting plate 33 is provided with the mounting blind hole, and the lower end of the mounting cylinder 2231 is fastened to the mounting blind hole, so that the easy-to-mount adjustment seat 223 can be fixed to the mounting plate 33 of the base assembly 3. The retaining ring 2232 is secured to the base assembly 3. Specifically, the fixing ring piece 2232 is fixed to the mounting plate 33 by bolts. The installation adjustment seat 223 is provided to adjust the installation axle center distance between the slewing ring gear 23 and the pinion gear 222.

With continued reference to fig. 1 and 2, the drive structure 22 further includes a gland 224. Gland 224 includes a cover 2241 and a connecting shaft 2242. The cover 2241 is fitted over the front end of the output shaft of the driving member 221, and is fixed to the fixing base 31 by an end-face bolt. One end of the connecting shaft 2242 is integrally connected with the end face, facing away from the output shaft, of the cover 2241, and the other end of the connecting shaft is fixed with the base assembly 3, so that the driving structure 22 is supported and connected at the upper end and the lower end, and the axial rigidity of the driving structure 22 is increased.

Further, as shown in fig. 1 and 2, the drive structure 22 also includes an eccentric sleeve 225. The eccentric sleeve 225 is fitted over the other end of the connection shaft 2242 and is engaged with the adjustment hole 313 provided in the base assembly 3, thereby fixing the other end of the connection shaft 2242 to the base assembly 3. The eccentric sleeve 225 is provided to adjust the position between the connecting shaft 2242 and the base assembly 3. As shown in fig. 12, the fixed base 31 is provided with an adjustment hole 313, and the eccentric sleeve 225 is engaged with the adjustment hole 313.

Referring to fig. 1, 3 and 4, the lifting mechanism 1 includes a lifting cylinder 11, a fixed shaft 13, two lifting arms 14, two second fixing lugs 15, two fixing pieces 16 and two hooks 17. The lifting mechanism 1 adopts an oil cylinder direct pushing structure, the lifting oil cylinder 11 has no rod cavity effect when the ditch cover is lifted, the utilization rate of the lifting oil cylinder 11 is high, and the execution efficiency of the lifting oil cylinder 11 is improved.

The two lifting arms 14 are arranged in parallel and form an installation gap between the side surfaces thereof, the front ends of the two lifting arms are respectively fixed with a hook 17, and the rear ends of the two lifting arms are connected with the slewing mechanism 2. Specifically, one end of the hook 17 is fixedly connected with the lifting arm 14 by a bolt, and the other end is used for hooking the trench cover. When the rotating structure 21 of the slewing mechanism 2 comprises the cylinder 211 and two first fixing lugs 212, the rear ends of the two lifting arms 14 are respectively connected with the two first fixing lugs 212 through pin shafts, and two-point supporting connection is adopted, so that the connection reliability is high and the stability is good.

The fixed shaft 13 is provided in the installation gap, and both ends are fixed to the side walls of the two lift arms 14, respectively. The two fixing pieces 16 are disposed in the mounting gap, and one end face is fixed to the side walls of the two lifting arms 14, respectively. The two second fixing lugs 15 are arranged in parallel, the upper parts of the two second fixing lugs extend out of the upper end faces of the lifting arms 14, one ends of the two second fixing lugs are fixed with the fixed shafts 13, and the other ends of the two second fixing lugs are fixed with the surfaces of the other ends of one fixing piece 16 respectively, so that a half-box structure is formed. One end of the lift cylinder 11 is connected to an upper portion of an upper end surface of the lift arm 14, and the other end is connected to the swing mechanism 2. When the rotating structure 21 of the swing mechanism 2 includes the cylinder 211 and two first fixing lugs 212, two third fixing lugs 213 are further disposed at the lower portion of the outer side wall of the cylinder 211, and the other end of the lift cylinder 11 is connected to the two third fixing lugs 213. The lifting mechanism 1 directly pushes the lifting arm 14 to rotate around the rear end connecting pivot through the lifting oil cylinder 11, so as to realize the lifting action of the trench cover. Further, the side of the lift cylinder 11 is provided with a balance valve 12 to prevent the drop of the cap from losing weight.

According to the lifting mechanism 1 provided by the embodiment of the utility model, the connection point of the lifting arm 14 and the upper end of the lifting oil cylinder 11 is external, and meanwhile, the semi-box structure is adopted, so that the connection rigidity of the lifting arm 14 and the lifting oil cylinder 11 is increased, the installation and disassembly operation space is increased, and the operation is convenient.

Optionally, the bearing is a tapered roller bearing, so that the bearing capacity of the rotary cover moving machine and the integral rigidity of the rotary cover moving machine can be ensured.

In this specification, each embodiment is described in a progressive manner, and the same or similar parts of each embodiment are referred to each other, and each embodiment is mainly described as a difference from other embodiments.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the present utility model; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (9)

1. The rotary cover moving machine is characterized by comprising a lifting mechanism, a rotary mechanism and a base assembly;

the rear end of the lifting mechanism is connected with the slewing mechanism and can rotate under the drive of the slewing mechanism;

the rotary mechanism comprises a rotary structure, a driving structure, a bearing and a rotary large gear ring;

the lower end of the rotary structure is fixedly connected with the rotary large gear ring and is assembled and connected with the base through the bearing;

the drive structure includes a drive member and a pinion gear;

the main body of the driving piece is assembled and fixed with the base;

the pinion is sleeved on the output shaft of the driving piece and meshed with the rotary large gear ring.

2. The rotary cap transfer machine of claim 1 wherein the rotating structure comprises a barrel and two first fixed lugs;

the lower ends of the two first fixing lugs are respectively and fixedly arranged on opposite side walls of the upper end of the cylinder body, the upper end of the first fixing lugs are hinged with the rear end of the lifting mechanism, and the rear end of the lifting mechanism is positioned between the two first fixing lugs.

3. The rotary capping machine of claim 1 or 2 wherein the rotary mechanism further comprises a balanced support structure;

the balance support structure is arranged on the rotating structure and used for keeping balance of the rotating structure.

4. The rotary lid-moving machine according to claim 3, wherein the balance support structure comprises a fixed plate, a fixed cylinder, a balance support plate and two balance shafts;

the fixed plate is fixed with the upper end of the rotating structure;

the lower end of the fixed cylinder is fixed with the upper surface of the fixed plate;

the balance supporting plate is V-shaped; the surface of the bottom of the V shape is fixed with the upper end surface of the fixed cylinder, and the top is fixed with one end of one balance shaft respectively;

the other ends of the two balance shafts are respectively connected with the base in an assembling way.

5. The rotary lid mover of claim 1, wherein the drive structure further comprises a mounting adjustment seat;

the installation adjusting seat comprises an installation cylinder and a fixed ring piece;

the mounting cylinder is sleeved on the driving piece;

the inner side wall of the fixed ring piece is integrally connected with the outer side wall of the mounting cylinder;

the base is provided with a mounting blind hole which is recessed downwards from the upper surface, and the lower end of the mounting cylinder is clamped and fixed in the mounting blind hole;

the fixed ring piece is assembled and fixed with the base.

6. The rotary capping machine of claim 1 or 5 wherein the drive structure further comprises a gland;

the gland comprises a cover body and a connecting shaft;

the cover body is sleeved at the front end of the output shaft of the driving piece;

one end of the connecting shaft is integrally connected with the end face, deviating from the output shaft, of the cover body, and the other end of the connecting shaft is fixedly assembled with the base.

7. The rotary lid mover of claim 6, wherein the drive structure further comprises an eccentric sleeve;

the eccentric sleeve is sleeved at the other end of the connecting shaft and is clamped in an adjusting hole in the base assembly.

8. The rotary lid moving machine according to claim 1, wherein the lifting mechanism comprises a lifting cylinder, a fixed shaft, two lifting arms, two second fixing lugs, two fixing pieces and two hooks;

the two lifting arms are arranged in parallel, an installation gap is formed between the side surfaces of the two lifting arms, the front ends of the two lifting arms are respectively fixed with one hook, and the rear ends of the two lifting arms are connected with the slewing mechanism;

the fixed shaft is arranged in the installation gap, and two ends of the fixed shaft are respectively fixed with the side walls of the two lifting arms;

the two fixing pieces are arranged in the mounting gap, and one end face of each fixing piece is fixed with the side walls of the two lifting arms respectively;

the two second fixing lugs are arranged in parallel, the upper parts of the two second fixing lugs extend out of the upper end faces of the lifting arms, one ends of the two second fixing lugs are fixed with the fixing shafts, and the other ends of the two second fixing lugs are fixed with the surfaces of the other ends of the fixing pieces respectively;

one end of the lifting oil cylinder is connected with the upper part, and the other end of the lifting oil cylinder is connected with the slewing mechanism.

9. The rotary cap transfer machine of claim 1 wherein the bearing is a tapered roller bearing.