CN217487436U

CN217487436U - Belt transmission tensioning adjusting mechanism of food dough mixing machine and food dough mixing machine

Info

Publication number: CN217487436U
Application number: CN202221741460.6U
Authority: CN
Inventors: 陈国谦
Original assignee: GUANGDONG LIFENG MACHINERY MANUFACTURING CO LTD
Current assignee: GUANGDONG LIFENG MACHINERY MANUFACTURING CO LTD
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-09-27
Anticipated expiration: 2032-07-05

Abstract

The utility model discloses a food flour-mixing machine belt drive's tensioning adjustment mechanism and food flour-mixing machine thereof, a food flour-mixing machine belt drive's tensioning adjustment mechanism, including the fuselage with establish driving motor in the fuselage, driving pulley and driven pulley, driving motor and driving pulley connection, driving pulley passes through driving belt with driven pulley and is connected, is equipped with the location axle in the fuselage, and driving motor passes through location axle rotatable positioning on the fuselage, is equipped with control driving motor pivoted adjustment mechanism on the fuselage, and this adjustment mechanism extends outside the fuselage. The utility model provides a food flour-mixing machine, includes base, agitator tank, stirs and colludes and foretell tensioning adjustment mechanism, and the fuselage below is located to the base, and the agitator tank is established on the base, stirs to collude and stretches into the agitator tank, stirs to collude and is connected with driven pulley. The adjusting pull rod is exposed and connected with the adjusting nut, so that the driving motor is pulled to adjust the center distance of belt transmission, the tightness of belt transmission is adjusted, and the operation is convenient and fast.

Description

Belt transmission tensioning adjusting mechanism of food dough mixing machine and food dough mixing machine

Technical Field

The utility model belongs to the technical field of the food machinery technique and specifically relates to a food flour-mixing machine belt drive's tensioning adjustment mechanism and food flour-mixing machine thereof are related to.

Background

The food dough maker is a common food processing machine and is commonly used for mixing flour and stirring powder foods. Flour and water are matched and placed in a stirring cylinder, a stirring hook is driven by a transmission device to rotate in the stirring cylinder, the stirring cylinder is driven by the transmission device to rotate at a constant speed, flour in the cylinder is continuously pushed, pulled, kneaded and pressed, the flour is fully stirred and rapidly mixed, dry flour is uniformly hydrated, and dough with elasticity and uniform fluidity is obtained. The transmission device is mainly driven by a motor, a belt pulley is driven to rotate by the motor, and the belt pulley drives the stirring cylinder to rotate. The stirring hook can be connected with the motor in a belt transmission mode or can be directly connected with the motor, and the stirring hook rotates in the stirring cylinder. In the actual operation process, the position of motor and belt pulley can be drawn close by the belt for the motor is close to the churn, and the centre-to-centre spacing between the belt pulley diminishes, makes to stir and becomes lax between colluding, churn and the motor, influences the motor and drives to stir the rotational speed of colluding, churn rotation, thereby influences the quality and the efficiency of kneading dough. Therefore, the position of the motor needs to be adjusted. At present, the center distance of the belt pulley is basically adjusted by adopting a machine internal thread reverse jacking type or a translation motor in the market, and the adjustment can be realized only by a special tool during installation, particularly, the large-scale dough mixing machine with the small and large belt pulley has short center distance, large parts and heavy structure, and the installation safety factor and the installation efficiency of workers are low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a food flour-mixing machine belt drive's tensioning adjustment mechanism and food flour-mixing machine thereof exposes through adjusting the pull rod and connects adjusting nut, realizes pulling driving motor with adjusting belt drive's centre-to-centre spacing, adjusts belt drive's elasticity, the simple operation, make full use of space improves workman assembly security and alleviates intensity of labour.

In order to achieve the above purpose, the utility model provides a technical scheme is: the utility model provides a food flour-mixing machine belt drive's tensioning adjustment mechanism, includes the fuselage and establishes driving motor, drive pulley and the driven pulley in the fuselage, and driving motor and drive pulley connection, drive pulley pass through driving belt with the driven pulley and are connected, are equipped with the location axle in the fuselage, and driving motor passes through location axle rotatable positioning on the machine, is equipped with control driving motor pivoted adjustment mechanism on the fuselage, and this adjustment mechanism extends outside the fuselage.

The above technical scheme, the utility model, driving motor passes through the driving pulley and drives driven pulley rotatory, and driven pulley is used for connecting to stir and colludes, and the drive stirs and colludes rotatoryly. When the transmission belt is loosened in operation, the adjusting handle is rotated, the adjusting handle drives the adjusting mechanism to control the driving motor to rotate around the positioning shaft, the shaft center of the driving motor deviates, the driving motor drives the driving belt pulley to deviate in position in the rotating process relative to the machine body, and the driving belt pulley tightens the transmission belt to realize the adjustment of the tightness of the transmission belt. The adjusting mechanism extends out of the machine body and can be directly operated outside the machine body to enable the driving motor to rotate around the axis line of the rotating shaft, the driving motor and the driving belt pulley synchronously generate position change, the center distance between the driving belt pulley and the driven belt pulley is adjusted, and the tightness of the transmission belt is adjusted. The adjusting mechanism extends out of the machine body and can be connected with the adjusting handle, the adjusting mechanism can be directly operated outside the machine body when being adjusted, a cover plate at the top of the machine body does not need to be disassembled, the operation and the use are convenient and fast, and the efficiency is improved. The adjusting mechanism controls the driving motor to rotate on the positioning shaft through the driving motor or is connected with the positioning shaft through the driving motor and is realized through the rotation of the positioning shaft.

Foretell food flour-mixing machine belt drive's tensioning adjustment mechanism, adjustment mechanism include adjustment handle, motor bedplate and adjusting pull rod, and adjustment handle establishes outside the fuselage, motor bedplate and location axle rotatable coupling, and driving motor establishes on the motor bedplate, and adjusting pull rod's one end is connected with the motor bedplate, and the other end stretches out the fuselage and is connected with adjusting handle outward. The adjusting handle is in threaded connection with the adjusting pull rod, one end of the adjusting pull rod is connected with the motor seat plate, so that the adjusting pull rod cannot rotate, the adjusting handle is rotated to pull the adjusting pull rod to move along the axial direction of the adjusting handle, the adjusting pull rod pulls the motor seat plate and a driving motor arranged on the adjusting pull rod to rotate around the axial lead direction of the positioning shaft, the center distance between the driving belt pulley and the driven belt pulley is adjusted, and the tightness of the driving belt is adjusted.

Foretell food flour-mixing machine belt drive's tensioning adjustment mechanism is equipped with the riser on the motor bedplate, is equipped with the bar hole on the riser, and the tip of adjusting the pull rod is equipped with the couple, and the couple is hooked and is established in the bar hole. During operation, one end of an adjusting pull rod is hooked on the vertical plate through a hook, the motor seat plate is connected with the positioning shaft, the motor seat plate is tensioned through the adjusting pull rod and matched with the positioning shaft, the motor seat plate and the driving motor are fixed by the adjusting pull rod and the positioning shaft when the adjusting pull rod and the positioning shaft are not adjusted, and the driving motor drives the stirring hook to rotate and stir dough; when the tightness of the transmission belt is adjusted, the motor base plate is pulled by the adjusting pull rod to rotate relative to the positioning shaft, so that the purpose of adjusting the tightness of the transmission belt is achieved.

The belt-driven tensioning adjusting mechanism of the food dough mixer is characterized in that a supporting plate is arranged in the machine body, and the motor seat plate can be rotated on the supporting plate through the positioning shaft. A supporting block and a rotating block are arranged between the supporting plate and the motor seat plate, and a positioning shaft is arranged in the supporting block and the rotating block in a penetrating mode. Wherein, the supporting block is fixed on the supporting plate, the rotating block is fixed on the motor seat plate, and the positioning shaft is connected with the supporting block and the rotating block in a rotating fit manner. In the process that the motor seat plate is pulled by the adjusting pull rod and the driving motor rotates, the motor seat plate can rotate around the positioning shaft through the rotating block; the positioning shaft can also be connected through the rotating block, and the positioning shaft rotates in the supporting block.

The utility model provides another technical scheme is: the utility model provides a food flour-mixing machine, includes base, agitator tank, stirs and colludes and any one in the above-mentioned technical scheme tensioning adjustment mechanism, the fuselage below is located to the base, and the agitator tank is established on the base, stirs to collude and stretch into the agitator tank, stirs to collude and be connected with driven pulley. During operation, driving motor drive belt pulley is rotatory, and drive belt pulley passes through driving belt drive driven pulley and rotates, and driven pulley drives to stir and colludes rotatory in the agitator, stirs the flour in the agitator and kneads dough.

Foretell food flour-mixing machine still is equipped with rotating electrical machines, belt pulley group and speed reduction axle in establishing the base in the fuselage below, and rotating electrical machines is rotatable on the base through first rotation axis, and the speed reduction axle passes through the belt pulley group to be connected with rotating electrical machines, and the speed reduction axle is connected with the churn, drives the churn rotation. During operation, the mixing tank and the mixing hook rotate synchronously, and the mixing effect is improved. The rotating motor can rotate relative to the first rotating shaft, and the tightness of a transmission belt of the belt pulley set can be adjusted in the same way.

Foretell food flour-mixing machine is equipped with motor mounting panel and first adjusting screw in the base, and the rotating electrical machines is established on the motor mounting panel, and this first adjusting screw is connected with the motor mounting panel, and first adjusting screw extends outside the base, and is connected with first adjust knob. First adjusting knob and first adjusting screw spiro union stimulate first adjusting screw when first adjusting knob is rotatory, and first adjusting screw stimulates motor mounting panel and rotating electrical machines and rotates around first rotation axis for taut pulley block adjusts the elasticity of pulley block.

Foretell food flour-mixing machine, pulley group includes that one-level action wheel and one-level are followed the driving wheel, second grade action wheel and second grade are followed the driving wheel, the one-level action wheel is connected through one-level driving belt with the one-level follow driving wheel, the second grade action wheel is connected through second grade driving belt with the second grade from the driving wheel, the second grade is connected with the reduction shaft from the driving wheel, rotating electrical machines is connected with the one-level action wheel, the one-level is followed driving wheel and is passed through second grade driving shaft with the second grade action wheel and be connected. The rotating electrical machines during operation drives the one-level action wheel rotatory, and the one-level action wheel passes through one-level driving belt and drives the one-level rotatory from the driving wheel, and the one-level drives the rotation of second grade action wheel through the second grade drive shaft from the driving wheel, and the second grade action wheel passes through the second grade driving belt and drives the rotation of second grade from the driving wheel and connect the churn through the speed reduction hub, drive the rotation of churn. Through the transition of the first-stage belt pulley and the second-stage belt pulley, the stirring cylinder can stably run when the rotating motor drives the stirring cylinder to rotate.

In the food dough mixer, the bearing seat is arranged between the first-stage driven wheel and the second-stage driving wheel, and the second-stage driving shaft is rotatably arranged in the bearing seat.

Foretell food flour-mixing machine, the bearing frame passes through the second rotation axis rotatable on the base, and the base is equipped with second adjusting screw, and second adjusting screw's one end is connected with the bearing frame, and the other end is worn out the base lateral wall and is connected with second adjust knob. The second adjusting knob is in threaded connection with the second adjusting screw, when the second adjusting knob rotates, the second adjusting screw is pulled, the second adjusting screw pulls the bearing seat to rotate around the second rotating shaft, the center distance between the secondary driving wheel and the secondary driven wheel is adjusted, the center distance between the primary driven wheel and the primary driving wheel is adjusted, and the effect of adjusting the tightness of the primary transmission belt and the secondary transmission belt is achieved.

The utility model discloses the beneficial effect who gains is: in the operation process, when the transmission belt is loosened, the tightness of the belt transmission mode can be achieved by directly rotating the adjusting handle and the adjusting knob; the novel flour-mixing machine is fully utilized in a limited transmission space, the efficiency that parts of a large flour-mixing machine are large and heavy and a plurality of multi-stage belts are simultaneously installed due to transmission is improved, the safety factor of worker installation is improved, the subsequent complex maintenance and repair workload is reduced, and the labor and manufacturing cost is reduced. The tightness of the belt can be conveniently and quickly adjusted.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;

FIG. 2 is a top view of the internal structure of the present invention in an embodiment;

fig. 3 is a bottom view of the internal structure of the present invention in an embodiment;

fig. 4 is a schematic view of the installation structure of the driving motor in the embodiment of the present invention;

fig. 5 is a schematic view of an installation structure of a rotating electric machine according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of a rotating electric machine mounting structure in an embodiment of the present invention;

fig. 7 is a schematic view of a mounting structure of a bearing seat in an embodiment of the present invention;

fig. 8 is a sectional structure view of the bearing housing of fig. 7.

Description of reference numerals: the automatic stirring device comprises a machine body 1, a driving pulley 11, a driven pulley 12, a transmission belt 13, a driving motor 14, a positioning shaft 15, a stirring cylinder 16, a stirring hook 17, a linkage shaft 18, an adjusting mechanism 2, an adjusting handle 21, a motor seat plate 22, an adjusting pull rod 23, a vertical plate 24, a strip-shaped hole 25, a hook 26, a supporting plate 27, a base 3, a rotating motor 31, a pulley group 32, a speed reducing shaft 33, a first rotating shaft 34, a motor mounting plate 35, a first adjusting screw 36, a first adjusting knob 37, a second rotating shaft 38, a second adjusting screw 39, a second adjusting knob 40, a primary driving wheel 321, a primary driven wheel 322, a secondary driving wheel 323, a secondary driven wheel 324, a primary transmission belt 325, a secondary transmission belt 326, a secondary driving shaft 327 and a bearing seat 328.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 8, a tensioning adjusting mechanism for belt transmission of a food dough mixer comprises a machine body 1, a driving motor 14, a driving belt pulley 11 and a driven belt pulley 12, wherein the driving motor 14, the driving belt pulley 11 and the driven belt pulley 12 are arranged in the machine body 1, the driving belt pulley 11 and the driven belt pulley 12 are connected through a driving belt 13, a positioning shaft 15 is arranged in the machine body 1, the driving motor 14 can be rotatably positioned on the machine body 1 through the positioning shaft 15, an adjusting mechanism 2 for controlling the driving motor 14 to rotate is arranged on the machine body 1, and the adjusting mechanism 2 extends out of the machine body 1.

The adjusting mechanism 2 comprises an adjusting handle 21, a motor seat plate 22 and an adjusting pull rod 23, the adjusting handle 21 is arranged outside the machine body 1, the motor seat plate 22 is rotatably connected with the positioning shaft 15, the driving motor 14 is arranged on the motor seat plate 22, one end of the adjusting pull rod 23 is connected with the motor seat plate 22, and the other end of the adjusting pull rod extends out of the machine body 1 and is connected with the adjusting handle 21.

The motor seat plate 22 is provided with a vertical plate 24, the vertical plate 24 is provided with a strip-shaped hole 25, the end part of the adjusting pull rod 23 is provided with a hook 26, and the hook 26 is hooked in the strip-shaped hole 25.

A bearing plate 27 is arranged in the machine body 1, and the motor seat plate 22 can rotate on the bearing plate 27 through the positioning shaft 15.

Further referring to fig. 1-8, a food dough mixer comprises a base 3, a mixing tank 16, a mixing hook 17 and the tension adjusting mechanism of the above embodiment, wherein the base 3 is arranged below the machine body 1, the mixing tank 16 is arranged on the base 3, the mixing hook 17 extends into the mixing tank 16, and the mixing hook 17 is connected with the driven pulley 12. Wherein, the driven pulley 12 is connected with the stirring hook 17 through a coupling shaft 18.

The base 3 is provided with a rotating motor 31, a pulley set 32 and a speed reducing shaft 33, the rotating motor 31 can rotate on the base 3 through a first rotating shaft 34, the speed reducing shaft 33 is connected with the rotating motor 31 through the pulley set 32, and the speed reducing shaft 33 is connected with the stirring cylinder 16 and drives the stirring cylinder 16 to rotate.

Be equipped with motor mounting panel 35 and first adjusting screw 36 in the base 3, rotating electrical machines 31 establishes on motor mounting panel 35, and this first adjusting screw 36 is connected with motor mounting panel 35, and first adjusting screw 36 extends outside base 3, and is connected with first adjust knob 37.

The pulley set 32 includes a first-stage driving wheel 321, a first-stage driven wheel 322, a second-stage driving wheel 323 and a second-stage driven wheel 324, the first-stage driving wheel 321 is connected with the first-stage driven wheel 322 through a first-stage transmission belt 325, the second-stage driving wheel 323 is connected with the second-stage driven wheel 324 through a second-stage transmission belt 326, the second-stage driven wheel 324 is connected with the reduction shaft 33, the rotating motor 31 is connected with the first-stage driving wheel 321, and the first-stage driven wheel 322 is connected with the second-stage driving wheel 323 through a second-stage driving shaft 327.

A bearing seat 328 is arranged between the primary driven wheel 322 and the secondary driving wheel 323, and the secondary driving shaft 327 is rotatably arranged in the bearing seat 328.

The bearing pedestal 328 can be rotated on the base 3 through the second rotating shaft 38, the base 3 is provided with a second adjusting screw 39, one end of the second adjusting screw 39 is connected with the bearing pedestal 328, and the other end of the second adjusting screw 39 penetrates through the side wall of the base 3 to be connected with a second adjusting knob 40.

When the utility model is implemented, one side of the driving motor 14 is connected to the positioning shaft 15 through the motor seat plate 22, and the positioning shaft 15 is rotatably arranged on the supporting plate 27. The motor seat plate 22 is provided with a vertical plate 24, the vertical plate 24 is provided with a strip-shaped hole 25, and the adjusting pull rod 23 is hooked in the strip-shaped hole 25 through a hook 26 at the end part of the adjusting pull rod, so that the adjusting pull rod 23 is connected with the motor seat plate 22. The outer end of the adjusting pull rod 23 extends out of the machine body 1, the adjusting handle 21 is rotated, and due to the fact that the adjusting handle 21 is in threaded connection with the adjusting pull rod 23, when the adjusting handle 21 rotates and the adjusting pull rod 23 does not rotate along with the adjusting handle, the adjusting handle 21 pulls the adjusting pull rod 23 to move axially, and the adjusting pull rod 23 drives the motor seat plate 22 to rotate relative to the positioning shaft 15. In normal use, the adjusting pull rod 23 cooperates with the support plate 27 and the positioning shaft 15 to support the fixed motor seat plate 22 and the driving motor 14.

In use, when the transmission belt 13 is loosened, the adjusting handle 21 is rotated to enable the adjusting pull rod 23 to pull the driving motor 14 to rotate around the positioning shaft 15. The driving motor 14 moves toward the outside of the body 1. The driving pulley 11 moves towards the outside of the body 1 along with the driving motor 14, the center distance between the driving pulley 11 and the driven pulley 12 is changed, and the driving pulley 11 and the driven pulley 12 together tighten the transmission belt 13, so that the transmission belt 13 is kept in a tightened state. The tightness of the transmission belt 13 can be quickly and conveniently adjusted, the adjusting handle 21 is arranged outside the machine body 1, the operation can be carried out without opening or disassembling the top cover, and the use is more convenient.

The rotary motor 31 drives the agitation cylinder 16 to rotate via a pulley group 32. The first adjusting knob 37 is screwed on the first adjusting screw 36, when the first adjusting knob 37 is screwed, the first adjusting knob 37 pulls the first adjusting screw 36 to move along the axial direction, and the first adjusting screw 36 pulls the motor mounting plate 35 and the rotating motor 31, so that the rotating motor 31 rotates around the first rotating shaft 34 to drive the first driving wheel 321 to tighten the first transmission belt 325. In the same way, the second adjusting screw 39 is pulled by the second adjusting knob 40 to move axially, so that the bearing block 328 rotates around the second rotating shaft 38, and the secondary driving belt 326 is tightened. The first adjusting knob 37 and the second adjusting knob 40 can be operated outside the base 3 to adjust the tightness of the primary transmission belt 325 and the secondary transmission belt 326, and the operation is convenient and quick.

In summary, the present invention has been made to practical samples according to the description and the drawings, and after a plurality of use tests, the utility model can be proved to achieve the expected purpose, and the practical value is undoubted. The above-mentioned embodiments are only used to conveniently illustrate the present invention, and are not to the limit of the present invention in any form, and any person who knows commonly in the technical field has, if not in the scope of the technical features of the present invention, utilize the present invention to make the equivalent embodiment of local change or modification, and not to break away from the technical features of the present invention, and all still belong to the technical features of the present invention.

Claims

1. The utility model provides a food flour-mixing machine belt drive's tensioning adjustment mechanism, includes fuselage (1) and establishes driving motor (14), drive pulley (11) and driven pulley (12) in fuselage (1), and driving motor (14) are connected with drive pulley (11), and drive pulley (11) are connected its characterized in that through driving belt (13) with driven pulley (12): be equipped with location axle (15) in fuselage (1), driving motor (14) are through location axle (15) rotatable positioning on fuselage (1), are equipped with control driving motor (14) pivoted adjustment mechanism (2) on fuselage (1), and this adjustment mechanism (2) extend outside fuselage (1).

2. The food and dough mixer belt drive tension adjustment mechanism of claim 1, wherein: adjustment mechanism (2) include adjustment handle (21), motor bedplate (22) and regulation pull rod (23), and adjustment handle (21) are established outside fuselage (1), and motor bedplate (22) and location axle (15) rotatable coupling, and driving motor (14) are established on motor bedplate (22), and the one end and the motor bedplate (22) of regulation pull rod (23) are connected, and the other end stretches out fuselage (1) and is connected with adjustment handle (21) outward.

3. The food dough mixer belt drive tension adjustment mechanism of claim 2, wherein: the motor seat plate (22) is provided with a vertical plate (24), the vertical plate (24) is provided with a strip-shaped hole (25), the end part of the adjusting pull rod (23) is provided with a hook (26), and the hook (26) is hooked in the strip-shaped hole (25).

4. The food and dough mixer belt drive tension adjustment mechanism of claim 2, wherein: a bearing plate (27) is arranged in the machine body (1), and the motor seat plate (22) can be rotated on the bearing plate (27) through a positioning shaft (15).

5. A food dough maker, which is characterized in that: the tension adjusting mechanism comprises a base (3), a stirring cylinder (16), a stirring hook (17) and the tension adjusting mechanism of any one of claims 1 to 4, wherein the base (3) is arranged below the machine body (1), the stirring cylinder (16) is arranged on the base (3), the stirring hook (17) extends into the stirring cylinder (16), and the stirring hook (17) is connected with a driven belt pulley (12).

6. The food dough mixer of claim 5, wherein: be equipped with rotating electrical machines (31), pulley group (32) and speed reduction axle (33) in base (3), rotating electrical machines (31) are rotatable to be established on base (3) through first rotation axis (34), and speed reduction axle (33) are connected with rotating electrical machines (31) through pulley group (32), and speed reduction axle (33) are connected with agitator (16), drive agitator (16) rotatory.

7. The food dough mixer of claim 6, wherein: be equipped with motor mounting panel (35) and first adjusting screw (36) in base (3), rotating electrical machines (31) are established on motor mounting panel (35), and this first adjusting screw (36) are connected with motor mounting panel (35), and first adjusting screw (36) extend base (3) outside, and are connected with first adjust knob (37).

8. The food dough mixer of claim 7, wherein: pulley set (32) are followed driving wheel (322) including one-level action wheel (321) and one-level, second grade action wheel (323) and second grade are followed driving wheel (324), one-level action wheel (321) are followed driving wheel (322) with one-level and are connected through one-level driving belt (325), second grade action wheel (323) are followed driving wheel (324) with the second grade and are passed through second grade driving belt (326) and be connected, second grade is followed driving wheel (324) and is connected with reduction shaft (33), rotating electrical machines (31) are connected with one-level action wheel (321), one-level is followed driving wheel (322) and is passed through second grade drive shaft (327) with second grade action wheel (323) and is connected.

9. The food dough mixer of claim 8, wherein: a bearing seat (328) is arranged between the first-stage driven wheel (322) and the second-stage driving wheel (323), and a second-stage driving shaft (327) is rotatably arranged in the bearing seat (328).

10. The food dough mixer of claim 9, wherein: the bearing seat (328) is rotatably arranged on the base (3) through a second rotating shaft (38), the base (3) is provided with a second adjusting screw rod (39), one end of the second adjusting screw rod (39) is connected with the bearing seat (328), and the other end of the second adjusting screw rod penetrates through the side wall of the base (3) to be connected with a second adjusting knob (40).