CN211612999U

CN211612999U - Colloid mill is used in ice island acidophilus milk production

Info

Publication number: CN211612999U
Application number: CN201922378363.XU
Authority: CN
Inventors: 王文欣; 杨海波; 王文兵
Original assignee: Beijing Keerqin Dairy Industry Co ltd
Current assignee: Beijing Keerqin Dairy Industry Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-10-02
Anticipated expiration: 2029-12-25

Abstract

The utility model relates to a colloid mill for iceland yoghourt production, which comprises a power unit shell, a stator, an upper cover, a rotor, a motor, a power assembly and a discharging pipe; the stator is fixedly connected to the upper part of the power unit shell; an annular baffle is fixedly connected to the end face of the top end of the stator; the upper cover is detachably and fixedly connected with the annular baffle; a funnel is fixedly connected to the upper part of the upper cover; the rotor is arranged in the accommodating cavity; the motor is fixedly connected to the upper part of the power unit shell; the power assembly comprises a rotating shaft, a driving wheel and a driven wheel; the discharge pipe is fixedly connected to the outer wall of the bottom end of the stator; one end of the discharge pipe, which is far away from the stator, is provided with a control valve; a circulating pipe is fixedly connected between the control valve and the stator on the discharge pipe; the annular baffle plate is provided with a clamping groove, and the clamping groove is matched with a clamping component for fixing the upper cover. The utility model has the characteristics of the upper cover is installed and is torn open conveniently.

Description

Colloid mill is used in ice island acidophilus milk production

Technical Field

The utility model belongs to the technical field of the technique of colloid mill and specifically relates to a colloid mill is used in iceland acidophilus milk production.

Background

The colloid mill is composed of stainless steel and semi-stainless steel colloid mills, and the basic principle is that a stator and a rotor are relatively linked at a high speed. Except the motor and partial parts, all the parts contacting with the material are made of high-strength stainless steel, and especially the key moving and static millstones are reinforced, so that the colloid mill has good corrosion resistance and wear resistance, and the processed material is pollution-free, sanitary and pure.

At present, the invention discloses a high-efficiency colloid mill structure with a filtering device in China with application publication No. CN106513099A, which comprises a power pack shell and a stator, wherein a driving gear and a driven gear are connected and arranged inside the power pack shell, the upper end of the driven gear is connected and arranged with a universal driving shaft, the outer ring of a rotating body is arranged with a hollow connecting middle end, the inner side and the outer side of the hollow connecting middle end are respectively provided with a hollow layer and a rotating body grinding surface, the inner side surface of the stator is provided with a stator grinding surface, the upper end of the shell of the stator is arranged with a feeding port, the discharging port is communicated with a discharging pipe, and the upper end of a control valve is connected.

The invention is designed and transformed by combining the currently commonly used colloid mill equipment, and grinding and combining are carried out through the stator and the rotor, so that the materials falling under the action of self gravity enter a grinding structure for continuous friction, crushing and grinding, and meanwhile, the filter body is arranged at the front end of the discharge pipe, so that the purity of the materials is improved.

In the use process of the colloid mill, the stator and the rotor need to be cleaned regularly, but the upper cover of the colloid mill in the invention is inconvenient to disassemble and assemble, and the production efficiency is directly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a colloid mill is used in iceland acidophilus milk production, it has the convenient characteristics of upper cover ann tears open to exist not enough to prior art.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a colloid mill for iceland yoghourt production comprises a power unit shell, a stator, an upper cover, a rotor, a motor, a power assembly and a discharge pipe; the stator is fixedly connected to the upper part of the power unit shell, an opening is formed in the top end of the stator, and a sawtooth-shaped grinding surface is arranged on the inner wall of the stator; an accommodating cavity for accommodating the rotor to rotate is arranged in the stator; an annular baffle is fixedly connected to the end face of the top end of the stator; the upper cover is detachably and fixedly connected with the annular baffle; a funnel is fixedly connected to the upper part of the upper cover; the rotor is arranged in the accommodating cavity, and the outer wall of the rotor is provided with a sawtooth-shaped grinding surface; the motor is fixedly connected to the upper part of the power unit shell, and the output end of the motor faces downwards vertically; the power assembly is arranged in the power unit shell and comprises a rotating shaft, a driving wheel and a driven wheel; the rotating shaft is vertically arranged, one end of the rotating shaft is fixedly connected to the central position of the bottom of the rotor, and the other end of the rotating shaft is fixedly connected with the driven wheel; the driving wheel is fixedly connected with the output end of the motor; the discharge pipe is fixedly connected to the outer wall of the bottom end of the stator and is communicated with the accommodating cavity; one end of the discharge pipe, which is far away from the stator, is provided with a control valve; a circulating pipe is fixedly connected between the control valve and the stator on the discharge pipe, one end of the circulating pipe is fixedly connected with the discharge pipe, and the other end of the circulating pipe extends to the upper part of the funnel; the annular baffle plate is provided with a clamping groove, and the clamping groove is matched with a clamping component for fixing the upper cover.

By adopting the technical scheme, the materials are gradually ground by the grinding surfaces of the rotor and the stator when passing through the gap between the rotor and the stator from top to bottom, and the materials can be circularly ground through the circulating pipe; when needing to wash the rotor, operating personnel only need operate the joint subassembly and can part upper cover and stator, compare prior art, the utility model provides an upper cover is comparatively convenient in the dismantlement and the installation.

The present invention may be further configured in a preferred embodiment as: the clamping groove is formed in the inner wall of the annular baffle, and the upper cover is provided with a bearing groove; the clamping assembly comprises a box body, an upper pulley, an upper rotating shaft, a force transmission plate, a button, a lower rotating shaft, a lower pulley, a fixing plate, a clamping plate and an ejection assembly; the box body is fixedly connected in the bearing groove; the upper pulley is arranged above the interior of the box body; the upper pulley is rotationally connected to the upper rotating shaft; the force transmission plate is vertically arranged, the bottom end of the force transmission plate is vertically and fixedly connected with the upper rotating shaft, and the top end of the force transmission plate penetrates out of the central position of the box body upwards; the button is arranged on the upper part of the force transmission plate and is vertically and fixedly connected with the force transmission plate; the lower pulley is correspondingly arranged below the upper pulley, and the lower pulley is in sliding contact with the upper pulley; the lower pulley is rotationally connected to the lower rotating shaft; the fixed plate is vertically arranged, the top end of the fixed plate is fixedly connected with the lower rotating shaft, and the bottom end of the fixed plate is suspended; one end of the clamping and connecting plate is vertically and fixedly connected with one side, close to the upper rotating shaft, of the fixing plate, and the other end of the clamping and connecting plate is clamped in the clamping and connecting groove; the ejection assembly has a tendency to drive the clamping plate to move towards the clamping groove.

Through adopting above-mentioned technical scheme, operating personnel presses the button and can follow the joint inslot with the joint board and shift out, joint subassembly overall structure is simple, convenient to use when dismantling the upper cover.

The present invention may be further configured in a preferred embodiment as: the ejection assembly comprises a guide rod and a pressure spring; one end of the clamping and connecting plate fixedly connected with the fixed plate is provided with a guide channel along the axial direction of the clamping and connecting plate, one end of the guide rod is vertically and fixedly connected to the inner wall of the box body, and the other end of the guide rod corresponds to the guide channel and penetrates through the fixed plate to be arranged in the guide channel in a penetrating manner; the compression spring is sleeved on the guide rod, one end of the compression spring is fixedly connected with the inner wall of the box body, and the other end of the compression spring is fixedly connected with the fixed plate; the longest length of the pressure spring is smaller than the distance from the upper rotating shaft to the inner wall of the box body.

Through adopting above-mentioned technical scheme, guide rod guide pressure spring axial motion, pressure spring drive joint board axial displacement, ejecting subassembly overall structure is simple, and effectively cooperates the joint board to realize its limit function.

The present invention may be further configured in a preferred embodiment as: a flowing water cavity is arranged in the side wall of the stator and surrounds the stator for one circle; the outer wall of the stator is fixedly connected with a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are communicated to the water flow cavity.

Through adopting above-mentioned technical scheme, the heat that produces in the grinding process is taken away to running water, can effectively prevent that the material is heated rotten.

The present invention may be further configured in a preferred embodiment as: the clamping assembly is provided with two groups of clamping assemblies which are symmetrically arranged on two sides of the axis of the upper cover, and the positions of the upper cover corresponding to the two groups of clamping assemblies are respectively and fixedly connected with a lifting ring.

Through adopting above-mentioned technical scheme, two sets of joint subassemblies symmetry sets up can effectively fix the upper cover, and the ring is drawn in the lift to assist operating personnel to shift out the upper cover.

The present invention may be further configured in a preferred embodiment as: and a rubber gasket is arranged between the upper cover and the stator.

Through adopting above-mentioned technical scheme, increased the leakproofness between upper cover and the stator.

The present invention may be further configured in a preferred embodiment as: the driving wheel and the driven wheel are sleeved with a belt.

Through adopting above-mentioned technical scheme, power component has the driving wheel meshing of coming far away to change from driving wheel transmission into belt drive, can effectively reduce the influence of the vibration that the rigid contact brought to rotor stability.

The present invention may be further configured in a preferred embodiment as: the bearing seat is fixedly connected to a bottom plate inside the power unit shell, a groove is formed in the bearing seat, and a bearing matched with the rotating shaft is arranged in the groove in an interference fit mode and is in interference fit with the rotating shaft.

Through adopting above-mentioned technical scheme, bearing and bearing frame can restrict the pivot and rock, have strengthened the stability of rotor rotation in-process, and then make the even grinding of material.

To sum up, the utility model discloses a following at least one useful technological effect:

1. compared with the prior art, the upper cover of the utility model is convenient to disassemble and assemble;

2. by arranging the clamping groove, the box body, the upper pulley, the upper rotating shaft, the force transmission plate, the button, the lower rotating shaft, the lower pulley, the fixing plate, the clamping plate and the ejection assembly, an operator can separate the upper cover from the stator by pressing the button, the structure is simple, and the use is convenient when the upper cover is detached;

3. through setting up flowing water chamber, inlet tube and outlet pipe, the heat that produces among the grinding process is taken away to the flowing water, can effectively prevent that the material is heated rotten.

Drawings

FIG. 1 is a schematic diagram of the structure of a colloid mill;

FIG. 2 is a cross-sectional view of a colloid mill;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

figure 4 is a schematic view of a portion of the construction of the clamping assembly.

In the figure, 1, a power pack shell; 10. a bearing seat; 11. a bearing; 2. a stator; 20. a running water cavity; 21. an annular baffle; 22. a water inlet pipe; 23. a water outlet pipe; 3. an upper cover; 30. a funnel; 31. a rubber gasket; 32. lifting the ring; 4. a rotor; 5. a motor; 6. a power assembly; 60. a rotating shaft; 61. a driving wheel; 62. a driven wheel; 63. a belt; 7. a discharge pipe; 70. a control valve; 71. a circulation pipe; 8. a clamping assembly; 80. a box body; 81. an upper pulley; 82. an upper rotating shaft; 83. a force transmission plate; 84. a button; 85. a lower rotating shaft; 86. a lower pulley; 87. a fixing plate; 88. a clamping and connecting plate; 89. ejecting the assembly; 890. a guide rod; 891. and (5) pressing a spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Examples

Referring to fig. 1 and 2, a colloid mill for iceland yogurt production disclosed by the present invention comprises a power unit housing 1, a stator 2, an upper cover 3, a rotor 4, a motor 5, a power assembly 6, a discharging pipe 7 and a clamping assembly 8; the power unit shell 1 is arranged on the ground; the stator 2 is fixedly connected to the upper part of the power unit shell 1, an opening is formed in the top end of the stator 2, and the inner wall of the stator 2 is a sawtooth-shaped grinding surface; an accommodating cavity for accommodating the rotor 4 to rotate is arranged in the stator 2; a water flowing cavity 20 is arranged around the stator 2 in the inner part of the side wall of the stator 2; an annular baffle 21 is fixedly connected to the end face of the top end of the stator 2, and the annular baffle 21 and the stator 2 are coaxially arranged; two clamping grooves are formed in the inner wall of the annular baffle plate 21 and are symmetrically arranged on two sides of the axis of the annular baffle plate 21; a water inlet pipe 22 and a water outlet pipe 23 are fixedly connected to the outer wall of the stator 2, and the water inlet pipe 22 and the water outlet pipe 23 are communicated to the water flowing cavity 20; the upper cover 3 is arranged at the upper part of the stator 2 and is matched with the annular baffle 21, and the upper cover 3 is detachably and fixedly connected with the annular baffle 21; a funnel 30 is fixedly connected to the upper part of the upper cover 3, and the funnel 30 is communicated with the accommodating cavity; a rubber gasket 31 is arranged between the upper cover 3 and the stator 2; two lifting rings 32 are fixedly connected to the top of the upper cover 3, and the lifting rings 32 are symmetrically arranged on two sides of the axis of the upper cover 3; the rotor 4 is arranged in the accommodating cavity, and the outer wall of the rotor 4 is a sawtooth-shaped grinding surface; the motor 5 is fixedly connected to the upper part of the power pack shell 1, and the output end of the motor 5 faces downwards vertically; the power assembly 6 is arranged inside the power unit shell 1, and the power assembly 6 comprises a rotating shaft 60, a driving wheel 61, a driven wheel 62 and a belt 63; the rotating shaft 60 is vertically arranged, one end of the rotating shaft is fixedly connected to the central position of the bottom of the rotor 4, and the other end of the rotating shaft is fixedly connected with the driven wheel 62; the driving wheel 61 is fixedly connected with the output end of the motor 5; the belts 63 are sleeved on the driving wheel 61 and the driven wheel 62, and the number of the belts 63 is three; the discharge pipe 7 is fixedly connected to the outer wall of the bottom end of the stator 2 and communicated with the containing cavity; a control valve 70 is arranged at one end of the discharge pipe 7 far away from the stator 2; a circulating pipe 71 is arranged between the control valve 70 and the stator 2, one end of the circulating pipe 71 is fixedly connected with the discharge pipe 7, and the other end of the circulating pipe 71 extends to the upper part of the funnel 30; the upper cover 3 is provided with a receiving groove corresponding to the lifting ring 32, the clamping component 8 is fixedly connected in the receiving groove, and the clamping component 8 is clamped with the annular baffle 21.

Referring to fig. 3 and 4, the clamping assembly 8 comprises a box body 80, an upper pulley 81, an upper rotating shaft 82, a force transmission plate 83, a button 84, a lower rotating shaft 85, a lower pulley 86, a fixing plate 87, a clamping plate 88 and an ejection assembly 89; the box body 80 is a hollow cuboid structure and is matched with the bearing groove; the number of the upper pulleys 81 is two, and the two upper pulleys 81 are parallel to each other and are arranged above the interior of the box body 80; the two upper pulleys 81 are rotatably connected to the upper rotating shaft 82; the force transmission plate 83 is vertically arranged, the bottom end of the force transmission plate is vertically and fixedly connected with the upper rotating shaft 82, and the top end of the force transmission plate upwards penetrates through the central position of the box body 80; the button 84 is arranged on the upper part of the force transfer plate 83 and is vertically and fixedly connected with the force transfer plate 83; the number of the lower pulleys 86 is two, the two lower pulleys 86 are arranged corresponding to the two upper pulleys 81 and are positioned below the sides of the two upper pulleys 81, and the lower pulleys 86 are in rotating contact with the upper pulleys 81; the two lower pulleys 86 are rotatably connected to the lower rotating shaft 85; the fixed plate 87 is vertically arranged, the top end of the fixed plate is fixedly connected with the lower rotating shaft 85, and the bottom end of the fixed plate is suspended; one end of the clamping plate 88 is vertically and fixedly connected with one side of the fixing plate 87 close to the upper rotating shaft 82, and the other end is clamped in the clamping groove.

The ejection assembly 89 is arranged on one side of the fixing plate 87, which is far away from the clamping plate 88; the ejection assembly 89 includes a guide rod 890 and a pressure spring 891; a guide channel along the axial direction of the clamping plate 88 is formed in one end of the clamping plate 88 fixedly connected with the fixed plate 87, one end of a guide rod 890 is vertically and fixedly connected to the inner wall of the box body 80, and the other end of the guide rod 890 corresponds to the guide channel and penetrates through the fixed plate 87 to be arranged in the guide channel; a pressure spring 891 is sleeved on the guide rod 890, one end of the pressure spring 891 is fixedly connected with the inner wall of the box body 80, and the other end is fixedly connected with the fixing plate 87; the longest length of the compression spring 891 is less than the distance from the upper rotating shaft 82 to the box 80.

In actual use, an operator closes the control valve 70 and pours the materials into the hopper 30; then, the motor 5 is started, the stator 2 is not moved, and the rotor 4 rotates under the transmission action of the belt 63; the materials are ground by the grinding surfaces of the rotor 4 and the stator 2 when passing through the gap between the rotor 4 and the stator 2 and flow to the discharge pipe 7; the outflow material flows to the circulating pipe 71 from the discharge pipe 7 and returns to the hopper 30 again to form a circulating grinding path; finally, the control valve 70 is opened, and the ground material flows to the next process through the discharge pipe 7.

The materials are gradually ground by the grinding surfaces of the rotor 4 and the stator 2 when passing through the gap between the two from top to bottom; by arranging the circulating pipe 71, the materials can be circularly ground, and the grinding is more sufficient; the power assembly 6 adopts the belt 63 for transmission, so that the influence of vibration caused by direct contact of the driving wheel 61 and the driven wheel 63 on the rotor 4 can be reduced, and the materials are ground more uniformly; the water flowing in from the water inlet pipe 22 carries away the heat generated in the grinding process when passing through the water flowing cavity 20 and flows out from the water outlet pipe 23, so that the material is not easy to deteriorate due to the heat during grinding; when the rotor 4 needs to be cleaned, an operator holds the lifting ring 32 with two hands, presses the two buttons 84 with two thumbs, and lifts the upper cover 3 upwards to open the stator 2; compared with the prior art, the utility model provides an upper cover 3 is comparatively convenient in dismantlement and installation.

Referring to fig. 2, in order to enhance the stability of the rotating shaft 60 during the rotating process, the present invention is further designed with a bearing seat 10 and a bearing 11; the bearing seat 10 is fixedly connected to a bottom plate inside the power pack shell 1, and a groove is formed in the bearing seat 10; the inner ring of the bearing 11 is in interference fit with the rotating shaft 60, and the outer ring of the bearing 11 is in interference fit with the groove.

In actual use, the rotating shaft 60 drives the inner ring of the bearing 11 to rotate, and the bearing 11 is fixed in the bearing seat 10 and does not move.

The bearing 11 has an end limiting effect on the rotating shaft 60, so that the rotating shaft 60 is relatively stable in the rotating process, and the material grinding is more uniform when the rotor 4 rotates.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A colloid mill for iceland yoghourt production comprises a power unit shell (1), a stator (2), an upper cover (3), a rotor (4), a motor (5), a power assembly (6) and a discharge pipe (7); the stator (2) is fixedly connected to the upper part of the power unit shell (1), an opening is formed in the top end of the stator (2), and a sawtooth-shaped grinding surface is arranged on the inner wall of the stator (2); an accommodating cavity for accommodating the rotor (4) to rotate is formed in the stator (2); an annular baffle (21) is fixedly connected to the end face of the top end of the stator (2); the upper cover (3) is detachably and fixedly connected with the annular baffle (21); a funnel (30) is fixedly connected to the upper part of the upper cover (3); the rotor (4) is arranged in the accommodating cavity, and a sawtooth-shaped grinding surface is arranged on the outer wall of the rotor (4); the motor (5) is fixedly connected to the upper part of the power unit shell (1), and the output end of the motor (5) faces downwards vertically; the power assembly (6) is arranged in the power unit shell (1), and the power assembly (6) comprises a rotating shaft (60), a driving wheel (61) and a driven wheel (62); the rotating shaft (60) is vertically arranged, one end of the rotating shaft is fixedly connected to the central position of the bottom of the rotor (4), and the other end of the rotating shaft is fixedly connected with the driven wheel (62); the driving wheel (61) is fixedly connected with the output end of the motor (5); the discharge pipe (7) is fixedly connected to the outer wall of the bottom end of the stator (2) and is communicated with the accommodating cavity; a control valve (70) is arranged at one end, far away from the stator (2), of the discharge pipe (7); a circulating pipe (71) is fixedly connected between the control valve (70) and the stator (2) on the discharge pipe (7), one end of the circulating pipe (71) is fixedly connected with the discharge pipe (7), and the other end of the circulating pipe extends to the upper part of the funnel (30); the method is characterized in that: the annular baffle (21) is provided with a clamping groove matched with a clamping component (8) for fixing the upper cover (3).

2. The colloid mill for producing iceland yoghourt according to claim 1, wherein: the clamping groove is formed in the inner wall of the annular baffle (21), and the upper cover (3) is provided with a bearing groove; the clamping assembly (8) comprises a box body (80), an upper pulley (81), an upper rotating shaft (82), a force transfer plate (83), a button (84), a lower rotating shaft (85), a lower pulley (86), a fixing plate (87), a clamping plate (88) and an ejection assembly (89); the box body (80) is fixedly connected in the bearing groove; the upper pulley (81) is arranged above the interior of the box body (80); the upper pulley (81) is rotatably connected to the upper rotating shaft (82); the force transmission plate (83) is vertically arranged, the bottom end of the force transmission plate is vertically and fixedly connected with the upper rotating shaft (82), and the top end of the force transmission plate upwards penetrates through the central position of the box body (80); the button (84) is arranged on the upper part of the force transfer plate (83) and is vertically and fixedly connected with the force transfer plate (83); the lower pulley (86) is correspondingly arranged below the upper pulley (81), and the lower pulley (86) is in rotating contact with the upper pulley (81); the lower pulley (86) is rotatably connected to the lower rotating shaft (85); the fixed plate (87) is vertically arranged, the top end of the fixed plate is fixedly connected with the lower rotating shaft (85), and the bottom end of the fixed plate is suspended; one end of the clamping and connecting plate (88) is vertically and fixedly connected with one side, close to the upper rotating shaft (82), of the fixing plate (87), and the other end of the clamping and connecting plate is clamped in the clamping and connecting groove; the ejection assembly (89) has a tendency to drive the clamping plate (88) to move towards the clamping groove.

3. The colloid mill for producing iceland yoghourt according to claim 2, wherein: the ejection assembly (89) comprises a guide rod (890) and a pressure spring (891); one end of the clamping plate (88) fixedly connected with the fixed plate (87) is provided with a guide channel along the axial direction of the clamping plate (88), one end of the guide rod (890) is vertically and fixedly connected to the inner wall of the box body (80), and the other end of the guide rod corresponds to the guide channel and penetrates through the fixed plate (87) to be arranged in the guide channel in a penetrating manner; the pressure spring (891) is sleeved on the guide rod (890), one end of the pressure spring (891) is fixedly connected with the inner wall of the box body (80), and the other end of the pressure spring is fixedly connected with the fixing plate (87); the longest length of the pressure spring (891) is less than the distance from the upper rotating shaft (82) to the inner wall of the box body (80).

4. The colloid mill for producing iceland yoghourt according to claim 1, wherein: a flowing water cavity (20) is arranged in the side wall of the stator (2) and surrounds the stator (2) for one circle; the outer wall of the stator (2) is fixedly connected with a water inlet pipe (22) and a water outlet pipe (23), and the water inlet pipe (22) and the water outlet pipe (23) are communicated to the inside of the water flowing cavity (20).

5. The colloid mill for producing iceland yoghourt according to claim 2, wherein: the clamping component (8) is provided with two groups of clamping components which are symmetrically arranged at two sides of the axis of the upper cover (3), and the upper cover (3) is correspondingly provided with two groups of clamping components (8) which are fixedly connected with lifting rings (32) respectively.

6. The colloid mill for producing iceland yoghourt according to claim 1, wherein: and a rubber gasket (31) is arranged between the upper cover (3) and the stator (2).

7. The colloid mill for producing iceland yoghourt according to claim 1, wherein: the driving wheel (61) and the driven wheel (62) are sleeved with a belt (63).

8. The colloid mill for producing iceland yoghourt according to claim 1, wherein: the utility model discloses a power pack, including power pack shell (1), bearing frame (10) have been seted up on the inside bottom plate of power pack shell (1) rigid coupling, the recess has been seted up in bearing frame (10), interference fit have in the recess with bearing (11) of pivot (60) adaptation, bearing (11) with pivot (60) interference fit.