Micro-weighing feeder

Abstract

The utility model provides a trace weight formula feeder, include: stirring bin, guide tube, screw rod device, stirring mechanism, power mechanism, the inner chamber of stirring bin is "8" character shape, guide tube is located stirring bin lower extreme and intercommunication, screw rod device includes screw rod, screw rod installs in guide tube, stirring mechanism includes two stirring vane, two stirring shafts, worm and gear mechanism, stirring vane is plane vane, is located stirring bin bottom, two stirring shafts are located guide tube's both sides, worm and gear mechanism includes two worm gears, worm simultaneously drives two worm gears, two worm gears drive two stirring vanes in stirring bin with interval phase angle gamma's mode to counter-rotate through two stirring shafts. The utility model solves the prior art's when the material amount in hopper is little, the stirring vane of horizontal rotation shaft carries the material and moves up and down in the hopper, causes the problem that the weighing device cannot accurately measure the mass of the material in the hopper.

Description

Technical Field

[0001] This utility model relates to the field of ingredient metering technology, and in particular to a micro-loss-in-weight feeder. Background Technology

[0002] Loss-in-weight feeders are devices programmed to add a fixed amount of granular or powdery materials into the equipment, and are widely used in automated batching production. Most loss-in-weight feeders require the addition of a vertical rotating shaft agitator and a horizontal rotating shaft agitator inside the hopper when processing powders. The vertical rotating shaft agitator is used to mix the materials; the horizontal rotating shaft agitator, located at the bottom of the hopper, is used to mix the materials and push them into the feed pipe. See the existing patent: A backpack-type loss-in-weight composite transmission feeder (Publication No.: CN114345231A), in conjunction with its specification and accompanying drawings. Figure 4 Its stirring paddle is a vertically rotating shaft stirring device, while the stirring output mechanism and stirring shaft are horizontally rotating shaft stirring devices. (Refer to the accompanying drawings in its instruction manual.) Figure 1 The new quick-change weighing platform is a device for weighing the composite transmission box, the new discharge mechanism, the hopper, and the vertical stirring mechanism. When the material in the hopper decreases through the new discharge mechanism, the new quick-change weighing platform can detect the amount of decrease. See the attached diagram in its instruction manual. Figure 4 The motor drives the stirring shaft (i.e., stirring blades) to rotate and stir in sequence through the reducer, coupling, output synchronous pulley, synchronous belt, input synchronous pulley, and stirring output mechanism (i.e., horizontal rotating shaft). When the material is below the highest point of the stirring blades, the stirring blades rotate upwards, and the stirring blades are higher than the material. The material will adhere to the rotating stirring blades and be lifted upwards. During this process, the material will fall off the stirring blades, and the material will be in a state of near free fall before falling into the hopper. During this process, the weighing data displayed by the weighing device first decreases and then increases, causing the weighing device to be unable to accurately measure the actual mass of the material in the hopper. Summary of the Invention

[0003] The technical problem to be solved by this utility model embodiment is to provide a micro-weight loss-in-weight feeder, which solves the problem in the prior art that when the amount of material in the hopper is small, the stirring blades of the horizontal rotating shaft drive the material to move up and down in the hopper, causing the weighing device to be unable to accurately measure the mass of the material in the hopper.

[0004] To solve the above-mentioned technical problems, this utility model provides a micro-loss-in-weight feeder, comprising: The mixing chamber has an inner cavity shaped like the number "8". The feed pipe is located at the lower end of the mixing chamber and is connected to it; A screw assembly, comprising a screw installed in a feed tube; The stirring mechanism includes two stirring blades, two stirring shafts, and a worm gear mechanism. The stirring blades are planar blades located at the bottom of the stirring chamber. The stirring shafts pass upward through the stirring chamber and connect to the stirring blades. The two stirring shafts are located on both sides of the feed guide pipe. The worm gear mechanism includes two worm wheels and a worm. The two worm wheels are respectively connected to the two stirring shafts. The worm drives the two worm wheels simultaneously, which in turn drive the two stirring blades in the stirring chamber to rotate counter-rotate at a phase angle γ. Each stirring blade has n stirring blades, where n = 2 or 3, and the phase angle γ is 180° / n. The power mechanism provides power to the screw assembly and mixing mechanism.

[0005] It also includes a weighing device, which weighs the mixing chamber, the feed pipe, the screw device, the mixing mechanism, and the power mechanism.

[0006] The planar blade refers to a stirring blade that rotates on a horizontal plane and has a flat shape, with its vertical height being less than its horizontal width.

[0007] The stirring blade includes a pushing surface, a guiding surface, and an upper inclined surface. The pushing surface is perpendicular to the rotation direction of the stirring blade. The guiding surface is located on the bottom surface of the stirring blade and is inclined to the rotating surface of the stirring blade. During operation, the guiding surface pushes and guides the material to the guiding pipe. The upper inclined surface is located on the upper surface of the stirring blade and is inclined.

[0008] The screw is a twin screw, and the guide tube is designed in a figure-eight shape to match the outline of the twin screw. The screw is installed into the guide tube from one end, and the other end of the guide tube is a discharge port with a connected vertical discharge tube. The guide tube is set horizontally. The screw device also includes a screw transmission mechanism. The power mechanism is connected to the screw through the screw transmission mechanism. The screw transmission mechanism includes a shaft mounting seat, an internal gear mounting seat, an internal gear drive block, a screw main shaft, and bearings. The screw is mounted in the shaft mounting seat and rotates. The shaft mounting seat is fixedly connected to the guide tube. The internal gear mounting seat is fixedly connected to the shaft mounting seat. The internal gear drive block is mounted in the internal gear mounting seat through the bearings and rotates. The internal gear drive block has a ring of internal teeth on its inner ring. A gear is fixed at one end of the screw. The screw is driven by meshing with the internal gear drive block through the gear. The screw main shaft is fixed to one end of the internal gear drive block and rotates around the central axis.

[0009] The worm gear mechanism also includes a worm gear box, in which the worm gears are installed. The threaded end of the worm is installed in the worm gear box and meshes with the two worm gears for transmission. The two worm gears are located on both sides of the worm. The worm gear box is located below the mixing chamber and the feed pipe and is fixedly connected. The worm gear box is fixedly installed on the detection surface of the weighing device.

[0010] The power mechanism includes a power compartment, which has a flip-open structure. The power compartment includes a fixed half compartment and a movable half compartment. The fixed half compartment is fixed to the detection surface of the weighing device. One end of the movable half compartment is hinged to the fixed half compartment, and the other end of the movable half compartment is foldably connected to the fixed half compartment via a connecting buckle. The fixed half compartment, the movable half compartment, and the connecting buckle constitute a flip-open box. The power mechanism also includes a planetary gear reducer motor, a power mounting base, a driving wheel, a driven wheel, a driving shaft, and a driven shaft. The planetary gear reducer motor is mounted on the movable half-chamber via the power mounting base. The driving wheel and driven wheel, which drive each other, are installed in the power mounting base. The planetary gear reducer motor is driven by the driving wheel, the driving wheel is driven by the driving shaft, and the driven wheel is driven by the driven shaft. The driving shaft drives the screw main shaft through an openable first coupling structure, and the driven shaft drives the worm gear through an openable second coupling structure.

[0011] The first and second coupling structures are claw couplings, each comprising two interlocking and separable claw connecting blocks.

[0012] The mixing chamber has a cover with a switch at the top; The weighing device is mounted on a base, and an electrical cabinet is also mounted on the base.

[0013] This utility model discloses a micro-loss-in-weight feeder with planar mixing blades positioned at the bottom of the mixing chamber. The two blades rotate horizontally, preventing material from flying around within the chamber and thus avoiding interference with the weighing device's readings. The two blades carry the material along the figure-eight shaped inner cavity of the mixing chamber in a reciprocating "8" motion, ensuring thorough mixing. The two blades rotate alternately on the same horizontal plane, with a guide pipe located below and between the blades. The blades push the material into the guide pipe, and the screw stably and accurately delivers the material out. As the material decreases during this process, the weighing device accurately reflects the amount of material pushed out by the screw. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the micro-loss-in-weight feeder of this utility model. Figure 1 .

[0015] Figure 2 This is a schematic diagram of the structure of the micro-loss-in-weight feeder of this utility model. Figure 2 .

[0016] Figure 3 This is a schematic diagram of the disassembled mixing chamber of this utility model.

[0017] Figure 4 This is a left view of the present invention after the electrical cabinet has been removed.

[0018] Figure 5 for Figure 4 Cross-sectional view at point AA.

[0019] Figure 6 for Figure 4 Cross-sectional view at point BB.

[0020] Figure 7 This is a cross-sectional view of the present invention after the electrical cabinet has been removed.

[0021] Figure 8 This is a schematic diagram of the worm gear mechanism of this utility model.

[0022] Figure 9 This is a schematic diagram of the screw device of this utility model.

[0023] Figure 10 This is a cross-sectional view of the screw device of this utility model.

[0024] Figure 11 for Figure 10 A magnified view of a section at point C.

[0025] Figure 12 This is a schematic diagram of the stirring blade structure of this utility model. Figure 1 .

[0026] Figure 13 This is a schematic diagram of the structure of the stirring blade of this utility model. Figure 2 .

[0027] In the picture: 1. Mixing bin; 2. Feed guide pipe; 3. Screw assembly; 4. Mixing mechanism; 5. Power mechanism; 6. Weighing device; 7. Base; 8. Electrical cabinet; 11. Bin cover; 21. Discharge pipe; 31. Screw; 32. Screw transmission mechanism; 33. Gear; 41. Mixing blade; 42. Mixing shaft; 43. Worm gear mechanism; 51. Power bin; 52. Planetary gear reducer motor; 53. Power mounting base; 54. Driving wheel; 55. Driven wheel; 56. Driving shaft; 57. Driven shaft; 58. First coupling structure; 59. Second coupling structure; 321. Shaft mounting base; 322. Internal gear mounting base; 323. Internal gear drive block; 324. Screw main shaft; 325. Bearing; 411. Mixing blade; 431. Worm gear; 432. Worm; 433. Worm gear box; 511. Fixed half-bin; 512. Movable half-bin; 513. Connecting buckle; 4111. Pushing surface; 4112. Feed guide surface; 4113. Upper inclined surface. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0029] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example

[0031] This utility model provides a micro-loss-in-weight feeder, such as Figure 1-3 It includes: a mixing chamber 1, a feed pipe 2, a screw device 3, a mixing mechanism 4, a power mechanism 5, a weighing device 6, a base 7, and an electrical cabinet 8. The weighing device 6 and the electrical cabinet 8 are installed on the base 7. The weighing device 6 weighs the mixing chamber 1, the feed pipe 2, the screw device 3, the mixing mechanism 4, and the power mechanism 5.

[0032] like Figure 3 , 7 The feed pipe 2 is set horizontally, located at the lower end of the mixing chamber 1 and connected to it, such as... Figure 5 , 7 9-11, the screw device 3 includes a screw 31, a screw transmission mechanism 32, and a gear 33. The screw 31 is a twin screw. The screw 31 is installed into the guide pipe 2 from the left end. The guide pipe 2 is designed to fit the contour of the twin screw. The right end of the guide pipe 2 is the discharge port and is connected to the vertical discharge pipe 21. The screw 31 is connected to the power mechanism 5 through the screw transmission mechanism 32.

[0033] like Figure 9-11 The screw drive mechanism 32 includes a shaft mounting seat 321, an internal gear mounting seat 322, an internal gear drive block 323, a screw main shaft 324, and a bearing 325. The screw 31 is installed in the shaft mounting seat 321 and rotates. The shaft mounting seat 321 is fixedly connected to the guide tube 2. The internal gear mounting seat 322 is fixedly connected to the shaft mounting seat 321. The internal gear drive block 323 is installed in the internal gear mounting seat 322 through the bearing 325 and rotates. The inner ring of the internal gear drive block 323 is provided with a ring of internal teeth. A gear 33 is fixed at one end of the screw 31. The screw 31 is driven by meshing with the internal gear drive block 323 through the gear 33. The screw main shaft 324 is fixed at one end of the internal gear drive block 323 and rotates around the central axis.

[0034] As shown in 3, 6-8, the stirring mechanism 4 includes two stirring blades 41, two stirring shafts 42, and a worm gear mechanism 43. The stirring blades 41 are planar blades, each with two stirring blades 411. The two stirring blades 41 are horizontally arranged at the bottom inside the stirring chamber 1, and they rotate alternately on the same horizontal plane. The inner cavity of the stirring chamber 1 is designed in a figure-eight shape to match the rotational profile of the two stirring blades 41. The two stirring blades 41 rotate alternately at a phase angle of 90°. The stirring shafts 42 pass upward through the stirring chamber 1 and are connected to the stirring blades 41. The stirring shafts 42 are connected to the power mechanism 5 through the worm gear mechanism 43.

[0035] like Figure 3 The feed pipe 2 is located between two stirring blades 41. The feed pipe 2 is perpendicular to the line connecting the rotation centers of the two stirring blades 41. The two stirring blades 41 rotate alternately and convey the material on both sides of the feed pipe 2 to the feed pipe 2.

[0036] like Figure 1 , 46-8, the worm gear mechanism 43 includes a worm gear box 433, two worm gears 431, and a worm 432. The worm gear box 433 is located below the mixing chamber 1 and the guide pipe 2. The worm gear box 433 is fixedly connected to the mixing chamber 1 and the guide pipe 2. The worm gear box 433 is fixedly installed on the detection surface of the weighing device 6. The worm gears 431 are installed in the worm gear box 433. The threaded end of the worm 432 is installed in the worm gear box 433 and meshes with the two worm gears 431 for transmission. The two worm gears 431 are located on both sides of the worm 432. The two worm gears 431 are fixedly connected to the two mixing shafts 42 respectively.

[0037] like Figure 1-7 The power mechanism 5 includes a power chamber 51, which is designed to be flipped open. The power chamber 51 includes a fixed half-chamber 511 and a movable half-chamber 512. The fixed half-chamber 511 is fixed to the detection surface of the weighing device 6. One end of the movable half-chamber 512 is hinged to the fixed half-chamber 511, and the other end of the movable half-chamber 512 is detachably connected to the fixed half-chamber 511 via a connecting buckle 513. The fixed half-chamber 511, the movable half-chamber 512, and the connecting buckle 513 constitute a flip-open box. The screw shaft 324 of the screw device 3 is located in the power chamber 51, and the other end of the worm gear 432 of the stirring mechanism 4 is also located in the power chamber 51.

[0038] The power mechanism 5 also includes a planetary gear reducer motor 52, a power mounting base 53, a driving wheel 54, a driven wheel 55, a driving shaft 56, and a driven shaft 57. The planetary gear reducer motor 52 is mounted on the movable half-chamber 512 via the power mounting base 53. The driving wheel 54 and driven wheel 55, which are mutually driven, are installed in the power mounting base 53. The planetary gear reducer motor 52 is driven by the driving wheel 54, the driving wheel 54 is driven by the driving shaft 56, and the driven wheel 55 is driven by the driven shaft 57. The driving shaft 56 drives the screw main shaft 324 through an openable first coupling structure 58, and the driven shaft 57 drives the worm gear 432 through an openable second coupling structure 59. The opening and closing of the first coupling structure 58 and the second coupling structure 59 are synchronized with the opening and closing states of the movable half-chamber 512.

[0039] The first coupling structure 58 and the second coupling structure 59 are claw couplings, which include two claw connecting blocks that can engage and disengage.

[0040] The stirring blade 41 includes two stirring blades 411 arranged at an angle of 180°. Each stirring blade 411 includes a pushing surface 4111, a guiding surface 4112, and an upper inclined surface 4113. The pushing surface 4111 is perpendicular to the rotation direction of the stirring blade 411. The guiding surface 4112 is located on the bottom surface of the stirring blade 411 and is inclined to the rotating surface of the stirring blade 411. During operation, the guiding surface 4112 pushes and guides the material to the guide pipe 2. The upper inclined surface 4113 is located on the upper surface of the stirring blade 411 and is inclined. During operation, the pushing surface 4111 pushes the material to move and mix, while some material is pushed and guided into the guide pipe 2 by the guiding surface 4112. The stirring blade 41 serves to mix and guide the material into the guide pipe 2.

[0041] The mixing chamber 1 has a cover 11 with a switch at the top. Closing the cover 11 can prevent powder materials from scattering out.

[0042] During operation, the material is poured into the mixing chamber 1 and the chamber cover 11 is closed. The weighing device 6 weighs and reads the value. When it is necessary to output material, the power mechanism 5 drives the screw 31 in the guide pipe 2 to rotate, conveying the material in the guide pipe 2 and controlling the output amount of the material. At the same time, the power mechanism 5 drives the stirring blades 41 in the mixing chamber 1 to rotate through the worm gear mechanism 43. The stirring blades 41 mix and stir the material in the mixing chamber 1 and push the material into the guide pipe 2 so that the screw 31 can convey the material in the guide pipe 2. When the material in the mixing chamber 1 is conveyed out through the guide pipe 2, the weighing reading of the weighing device 6 below decreases, thereby calculating the amount of material conveyed out.

[0043] In summary, the micro-loss-in-weight feeder of this invention features planar mixing blades positioned at the bottom of the mixing chamber. The two blades rotate horizontally, preventing material from flying around within the chamber and thus avoiding interference with the weighing device's readings. The two blades carry the material along the figure-eight shaped inner cavity of the mixing chamber in a reciprocating motion, ensuring thorough mixing. The two blades rotate alternately on the same horizontal plane, with the feed tube located below and between the blades. The blades push the material into the feed tube, and the screw stably and accurately delivers the material out. As the material decreases during this process, the weighing device accurately reflects the amount of material pushed out by the screw.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A micro-loss-in-weight feeder, characterized in that, include: The mixing chamber (1) has an inner cavity shaped like an "8". The feed pipe (2) is located at the lower end of the mixing chamber (1) and is connected to it; The screw device (3) includes a screw (31) which is installed in the feed tube (2); The stirring mechanism (4) includes two stirring blades (41), two stirring shafts (42), and a worm gear mechanism (43). The stirring blades (41) are planar blades located at the bottom of the stirring chamber (1). The stirring shafts (42) pass upward through the stirring chamber (1) and are connected to the stirring blades (41). The two stirring shafts (42) are located on both sides of the feed pipe (2). The worm gear mechanism (43) includes two worm wheels (431) and a worm (432). The two worm wheels (431) are connected to the two stirring shafts (42) respectively. The worm (432) drives the two worm wheels (431) simultaneously. The two worm wheels (431) drive the two stirring blades (41) in the stirring chamber (1) to rotate in opposite directions with a phase angle γ. The number of stirring blades (411) of each stirring blade (41) is n, n=2 or 3, and the phase angle γ is 180° / n. The power mechanism (5) provides power to the screw device (3) and the stirring mechanism (4).

2. The micro-loss-in-weight feeder according to claim 1, characterized in that, It also includes a weighing device (6), which weighs the mixing chamber (1), the feed pipe (2), the screw device (3), the mixing mechanism (4), and the power mechanism (5).

3. The micro-loss-in-weight feeder according to claim 1, characterized in that, The planar blade refers to a stirring blade that rotates on a horizontal plane and has a flat shape, with its vertical height being less than its horizontal width.

4. The micro-loss-in-weight feeder according to claim 1, characterized in that, The stirring blade (411) includes a pushing surface (4111), a guiding surface (4112), and an upper inclined surface (4113). The pushing surface (4111) is perpendicular to the rotation direction of the stirring blade (411). The guiding surface (4112) is disposed on the bottom surface of the stirring blade (411). The guiding surface (4112) is inclined to the rotating surface of the stirring blade (411). During operation, the guiding surface (4112) pushes and guides the material to the guide pipe (2). The upper inclined surface (4113) is disposed on the upper surface of the stirring blade (411) and is inclined.

5. The micro-loss-in-weight feeder according to claim 1, characterized in that, The screw (31) is a twin screw, and the guide tube (2) is set in a figure-eight shape that matches the outline of the twin screw. The screw (31) is installed into the guide tube (2) from one end. The other end of the guide tube (2) is the discharge port and is connected to a vertical discharge tube (21). The guide tube (2) is set horizontally. The screw device (3) further includes a screw transmission mechanism (32). The power mechanism (5) is connected to the screw (31) through the screw transmission mechanism (32). The screw transmission mechanism (32) includes a shaft mounting seat (321), an internal gear mounting seat (322), an internal gear drive block (323), a screw shaft (324), and a bearing (325). The screw (31) is installed in the shaft mounting seat (321) and rotates. The shaft mounting seat (321) is fixedly connected to the guide tube (2). The internal gear... The mounting base (322) is fixedly connected to the shaft mounting base (321). The internal gear drive block (323) is mounted in the internal gear mounting base (322) through the bearing (325) and rotates. The internal gear drive block (323) has a ring of internal teeth on its inner ring. One end of the screw (31) is fixed with a gear (33). The screw (31) meshes with the internal gear drive block (323) through the gear (33) for transmission. The main shaft (324) of the screw is fixed to one end of the internal gear drive block (323) and rotates around the central axis.

6. The micro-loss-in-weight feeder according to claim 1, characterized in that, The worm gear mechanism (43) also includes a worm gear box (433), in which the worm gear (431) is installed. The threaded end of the worm (432) is installed in the worm gear box (433) and meshes with the two worm gears (431) for transmission. The two worm gears (431) are located on both sides of the worm (432). The worm gear box (433) is located below the mixing chamber (1) and the guide pipe (2) and is fixedly connected. The worm gear box (433) is fixedly installed on the detection surface of the weighing device (6).

7. The micro-loss-in-weight feeder according to any one of claims 5-6, characterized in that, The power mechanism (5) includes a power compartment (51), which is designed to be flipped open. The power compartment (51) includes a fixed half compartment (511) and a movable half compartment (512). The fixed half compartment (511) is fixed on the detection surface of the weighing device (6). One end of the movable half compartment (512) is hinged to the fixed half compartment (511), and the other end of the movable half compartment (512) is connected to the fixed half compartment (511) through a connecting buckle (513). The fixed half compartment (511), the movable half compartment (512), and the connecting buckle (513) constitute a flipped open box. The power mechanism (5) further includes a planetary gear reducer motor (52), a power mounting base (53), a drive wheel (54), a driven wheel (55), a drive shaft (56), and a driven shaft (57). The planetary gear reducer motor (52) is mounted on the movable half-chamber (512) via the power mounting base (53). The drive wheel (54) and the driven wheel (55) are installed in the power mounting base (53) and drive the drive wheel (54) to drive each other. The planetary gear reducer motor (52) is connected to the drive wheel (54) and drive the drive shaft (56). The driven wheel (55) is connected to the driven shaft (57). The drive shaft (56) drives the screw main shaft (324) through an openable first coupling structure (58), and the driven shaft (57) drives the worm gear (432) through an openable second coupling structure (59).

8. The micro-loss-in-weight feeder according to claim 7, characterized in that, The first coupling structure (58) and the second coupling structure (59) are claw couplings, and the claw couplings include two claw connecting blocks that can engage and disengage.

9. The micro-loss-in-weight feeder according to claim 2, characterized in that, The mixing chamber (1) has a cover (11) with a switch at the upper end. The weighing device (6) is mounted on the base (7), and the electrical cabinet (8) is also mounted on the base (7).

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