Reciprocating peeling test device for crushed corn ear kernels

Abstract

The invention relates to a reciprocating peeling test device for crushed corn ear kernels, and aims to collect various parameters in a reciprocating corn threshing process so as to optimize a reciprocating corn threshing device and improve threshing efficiency and quality. The device comprises a clamping power assembly, a sliding rail tray assembly and a base assembly. The clamping power assembly comprises a clamping mechanism and a power assembly, the clamping mechanism adopts rubber conical surface side plates and bottom plates, so that the friction force between the clamping mechanism and the crushed corn ears can be increased, the clamping is more stable, and meanwhile, the number of the rubber conical surface bottom plates can be adjusted according to the sizes of the crushed corn ears; inner and outer adjusting discs are used in the power assembly to adjust the shaking amplitude, operation is easy, and the adjusting range is large; the slide rail tray assembly adopts a cutter with a slide rail, so that the switching of two different test modes of fixing the relative position between a cutter head and the corn kernels and applying constant external force on the surfaces of the corn kernels by the cutter head can be realized. The design is beneficial to reducing labor force and improving the accuracy of test data.

Description

Technical Field

[0001] The invention relates to the field of detection technology, and more specifically to a reciprocating peeling test device for broken corn cob kernels. Background Art

[0002] Corn threshing is one of the important processes in mechanized corn harvesting and has a significant impact on the quality of mechanized corn harvesting. The reciprocating small-load corn threshing device can greatly reduce the damage to corn kernels during mechanized threshing. In order to optimize and improve the existing reciprocating corn cob crushing threshing device, it is necessary to measure the influencing factors when the reciprocating small load is applied to the surface of corn kernels to peel off the kernels, mainly including the shaking amplitude, friction coefficient, shaking times and the size of the applied external force. Therefore, it is of great significance to invent a reciprocating peeling test device for crushed corn cobs. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the existing technology has the problem that parameters such as shaking amplitude, friction coefficient, shaking times and applied external force cannot be measured during the reciprocating threshing process of crushed corn ears, and a reciprocating peeling test device for crushed corn ears and kernels is provided.

[0004] A reciprocating peeling test device for broken corn cobs and kernels comprises a clamping power assembly, a slide rail tray assembly and a base assembly; the clamping power assembly is installed above a connecting seat by bolts and is located directly below a fixed knife in the slide rail tray assembly; the slide rail tray assembly is located above the base assembly and is fixed to the upper end surface of the base assembly by bolts; the base assembly is the base of the entire test device, is located at the bottom of the entire test device, and is used to install the slide rail tray assembly;

[0005] The clamping power assembly includes a clamping mechanism and a power assembly; the clamping mechanism is located on the upper left side of the clamping power assembly and is fixed to the upper end surface of the connecting seat by 4 bolts; the power assembly is located on the left and bottom of the entire clamping power assembly and is fixed to the slide rail tray assembly by bolts.

[0006] The clamping mechanism comprises a hand wheel, a locking nut, a push plate, two rubber cone side plates, three rubber cone bottom plates, a number of magnet pads, a fixing frame, two fastening bolts and a connecting plate;

[0007] The hand wheel is composed of a turntable, a threaded rod installed at the center of the end face of the turntable, and a buckle at the top of the threaded rod. The threaded rod passes through the threaded hole and the locking nut at the center of the left vertical plate of the fixed frame. The buckle at the top of the threaded rod is installed in the circular blind hole at the center of the end face of the push plate and is fixed by fixing bolts on the two side end faces of the push plate.

[0008] The locking nut is installed on the threaded rod in the hand wheel and is located outside the left vertical plate of the fixing frame. After the hand wheel adjustment is completed, the locking nut is tightened to fix the hand wheel and the push plate connected to the top thereof;

[0009] The push plate is a rectangular steel plate with a thickness of 15 mm, with 10 mm chamfers on both sides, and a circular blind hole at the center of the front end surface. The blind hole is connected to the buckle at the top of the handwheel and fixed by fixing bolts on the left and right end surfaces; the handwheel can be rotated relative to the push plate by adjusting the tightness of the fixing bolts;

[0010] The two rubber cone side plates are rectangular in outline, and the surface is covered with small quadrangular pyramids; they are respectively attached to the right end surface of the push plate and the left end surface of the right vertical plate of the fixed frame; they are used to increase the friction between them in the process of clamping the crushed corn ears, so as to prevent the crushing of the ears during the test from affecting the accuracy of the test data;

[0011] The outer contours of the three rubber conical bottom plates are all in the shape of a cuboid, the upper end surface is covered with small rubber quadrangular pyramids, and the lower body is made of 45# steel; the conical surfaces of the three rubber conical bottom plates face upwards, and the sides are fitted and fixed on the upper end of the magnet pad below;

[0012] The plurality of magnetic pads are all rectangular plate-shaped pads, which can be replaced with different sizes according to the requirements of the crushing of fruit ears, and can also be superimposed on each other to change the support height; the lower end surface is adsorbed on the cross section of the bottom plate of the fixed frame, and the upper end surface is adsorbed and fixed on the rubber cone bottom plate by magnetic force;

[0013] The fixing frame is welded by two left and right vertical plates and a bottom plate placed horizontally in the middle of the lower end; a threaded hole is opened at the center of the left vertical plate to cooperate with the threaded rod at the front end of the handwheel to realize the feeding and retreat of the push plate; a rubber cone side plate is pasted on the left end face of the right vertical plate; a circular hole with a diameter of 30mm is opened at the center of the lower end face of the lower bottom plate, and threaded holes with a diameter of 10mm are opened on the front and rear side end faces. The two threaded holes are connected to the circular hole at the center to fix with the lower connecting plate;

[0014] The two fastening bolts are 10 mm in diameter and are both provided with nuts, and are installed in the threaded holes at the center of the front and rear end surfaces of the bottom plate of the fixing frame; they are used to fasten the fixing frame and the connecting plate below;

[0015] The connecting plate is a rectangular steel plate with a thickness of 15 mm, with a cylindrical column with a diameter of 30 mm welded at the center, and a bolt hole is opened at the four corners of the upper and lower end faces; the circular column welded at the center of the upper end face passes through the circular hole in the center of the lower end face of the base plate below the fixing frame; the connection between the two is realized, and at the same time the fixing frame can rotate around the cylindrical column in the center of the upper end face of the connecting plate; when the fastening bolts are tightened, the two are fixed.

[0016] The power assembly includes a motor, an inner adjustment disk, an outer adjustment disk, a double-head connector, a large bearing, a small bearing, a connecting seat, a mounting seat, a slide rail, a displacement sensor and a counting sensor;

[0017] The motor is located at the rear end of the entire test device and is fixed to the mounting frame by four bolts; the power output shaft on the motor is provided with a flat keyway, which is fixed by a flat key and a circular through hole with a keyway at the center of the inner adjustment disk; it is responsible for providing power for the entire test device;

[0018] The main body of the inner adjustment disk is a disk with a thickness of 10mm and a diameter of 115mm. A cylinder with a flat keyway inside is fixed by welding at the center of the rear end surface. A keyway is opened on the front end surface and connected to the outer adjustment disk through a flat key. Along the direction of the keyway on the front end surface, two long strip through holes are opened on both sides of the keyway on the front end surface of the inner adjustment disk. The four long strip through holes are fixed to the outer adjustment disk by a bolt respectively, and the four bolts in the four long strip through holes can move the outer adjustment disk along the keyway direction on the front end surface of the inner adjustment disk to adjust the eccentricity;

[0019] The outer adjustment disk is a disk with a thickness of 10 mm and a diameter of 100 mm, with a keyway in the center, and connected to the inner adjustment disk using a flat key; a cylindrical shaft is welded at the center of the outer end surface, passing through the inside of the large bearing and fixed to the double-head connector; four threaded holes are opened around the disk, and bolts pass through the four long strip through holes of the inner adjustment disk and the four threaded holes around the outer adjustment disk to fix the inner and outer adjustment disks together;

[0020] The double-end connector is formed by welding the outer ends of two shafts with threads on the top of two different diameters to two cylinders with different diameters, wherein the thicker shaft end is welded to the center of the outer side of the large diameter cylinder, and the thinner shaft end is fixed to the center of the outer side of the small diameter cylinder by welding, and the front threads of the two shafts are connected and fixed by nuts to form a whole; the large diameter cylinder is located at the front end of the outer adjustment disk, and the large bearing on the outer side of the cylindrical shaft at the center of the outer adjustment disk is fixed by a retaining spring, while the small diameter cylinder is located at the two columns on the right side of the chassis, and the small bearing installed in the center of the two columns is fixed by a retaining spring;

[0021] The outer diameter of the large bearing is 52mm and the inner diameter is 20mm; the inner ring is fixed to the cylindrical shaft welded at the center of the outer adjustment disk, and the outer ring is fixed to the inside of the large diameter cylinder of the double-head connector by a retaining ring;

[0022] The small bearing has an outer diameter of 30 mm and an inner diameter of 10 mm; the inner ring is fixed between the two uprights on the right side of the chassis, and the outer side is fixed inside the small diameter cylinder of the double-head connector by a retaining spring;

[0023] The connecting seat body is a 10mm thick steel plate, which is a rectangular plate with two 30mm chamfers on the right side. Two columns are welded on the upper end surface in the middle of the chamfers. The upper part of the columns is provided with circular through holes, which are fixed to the inner ring of the small bearing by bolts.

[0024] The mounting seat is composed of an upper mounting plate and a lower sliding seat, which are fixed by 4 bolts; the upper mounting plate has circular through holes at the four corners, which are fixed by bolts and connecting plates; a circular through hole is opened on both sides of the center of the left and right end faces of the lower sliding seat, and the two cylindrical slideways inside the slide rail pass through the circular through holes to connect the two; a small elliptical column is welded at the center of the lower part of the front end face of the lower sliding seat to cooperate with the counting sensor to complete the counting operation;

[0025] The slide rail is composed of a lower fixing plate, two side vertical plates on the left and right sides, and two cylindrical slideways at the upper end of the inner part; the lower fixing plate is connected to fix the entire slide rail on the bottom frame by bolts, and the two vertical plates on the left and right sides are used to fix the two cylindrical slideways, and the two cylindrical slideways pass through two cylindrical through holes at the left and right centers of the lower part of the lower slide seat under the mounting seat, so that the mounting seat drives the upper mechanism to slide left and right along the slide rail;

[0026] The displacement sensor is installed in the circular through hole at the left end surface of the left vertical plate of the slide rail to record the displacement of the mounting seat sliding left and right;

[0027] The counting sensor is mounted on the middle of the front end surface of the fixing plate under the slide rail by magnetic attraction, and is used to record the number of left and right sliding of the mounting seat.

[0028] The slide rail tray assembly includes a base frame, a mounting frame, a long arm, a long slot, a connecting plate, a long arm stop bolt, a slide rail mounting seat, a slide rail stop bolt, a weight, a weight plate, a slide knife and a knife head;

[0029] The chassis is welded with 10mm thick steel plates, and is welded with an upper long plate, a lower short plate, left and right supporting vertical plates and a right triangular rib plate; 4 circular through holes with a diameter of 7mm are distributed on the upper end surface of the left side of the upper long plate, and the slide rail is fixed by bolts; 4 circular through holes with a diameter of 12mm are distributed on the right side, and are fixed together with the mounting frame by bolts; 1 circular through hole with a diameter of 8mm is distributed at each of the four corners of the lower short plate, and the entire chassis is fixed to the upper end surface of the base assembly by bolts;

[0030] The mounting frame is fixed to the upper right side of the chassis by four bolts with a diameter of 12 mm, and the whole body is welded with steel plates; a motor mounting seat is welded in the middle part of the rear side, and the motor is fixed to the mounting frame by four bolts; the left and right sides are welded into double-column-shaped clamping plates, and the top is provided with circular through holes with the same axis and the same diameter in the front and rear directions for placing and fixing the long arm;

[0031] The long arm is a rectangular long plate with a long slot in the front-to-back direction on the right side. It is installed on the upper right side of the mounting frame through a bolt with a thread at the end and an optical axis in the middle. The long arm can rotate relative to the mounting frame; the left and right sides are placed flush between the clamping plates at the upper left end of the mounting frame. Circular through holes are opened on both sides of the clamping plates, and the long arm stop bolts can be used to fix the long arm as a whole above the mounting frame;

[0032] The connecting plate is a rectangular steel plate, which is fixed to the left end face of the long arm by welding. A bolt hole with a diameter of 8 mm is opened in the middle of the upper side of the right end face for connecting with the stop bolt of the slide rail; the lower part is evenly distributed with 4 circular through holes with a diameter of 5 mm, and the slide rail mounting seat is fixed to the left end face of the connecting plate by bolts;

[0033] The slide rail mounting seat is formed by cutting square steel, with 4 threaded blind holes with a diameter of 5 mm evenly distributed on the right side, and fixed by bolts and connecting plates; a slide groove is opened on the left end surface, which cooperates with the slide rail fixed on the right side of the slide knife, wherein the slide knife can slide relatively around the slide rail mounting seat;

[0034] The weight plate is fixed on the upper end surface of the slide by welding, and is a cubic box with an upper opening, and contains weights inside, and the weights are replaceable;

[0035] The slide knife is composed of a top welding plate, a right small guide rail and a left fixed knife. The top welding plate is fixed to the weight plate by welding. The right guide rail is fixed in the slideway on the left side of the slide rail mounting seat. The left fixed knife is a long steel plate, which is fixed to the right guide rail by two countersunk bolts with a diameter of 4 mm. The entire slide knife can slide relatively around the slide rail mounting seat.

[0036] The cutter head is pasted on the lower end surface of the fixed cutter on the left side of the sliding cutter, and different materials can be replaced according to the situation during the test.

[0037] The base assembly is located at the bottom of the entire test bench, and includes a transverse guide rail assembly, a two-way connecting seat, a longitudinal guide rail assembly, a rotating base and a fixed base;

[0038] The transverse guide rail assembly is located at the uppermost end of the entire base assembly, and includes an upper guide rail surface, a transverse guide rail body, and a threaded rod handwheel; the upper guide rail surface is fixed to the base frame by bolts, and the threaded rod handwheel passes through the threaded holes on the transverse guide rail body and the upper end surface of the two-way connecting seat, and rotating the handwheel can realize the left and right lateral translation of the entire transverse guide rail assembly and the components thereon relative to the fixed base;

[0039] The upper and lower end surfaces of the bidirectional connecting seat are vertically provided with dovetail grooves that can be connected to the lower end surface of the transverse guide rail assembly and the upper end surface of the longitudinal guide rail assembly, and threaded holes are provided in the middle of the dovetail grooves for connecting to the threaded rod handwheels on the transverse guide rail assembly and the longitudinal guide rail assembly;

[0040] The longitudinal guide rail assembly is located below the two-way connecting seat, and includes a longitudinal guide rail body and a longitudinal threaded rod handwheel. The upper end surface of the guide rail body is connected to the dovetail groove at the lower end surface of the two-way connecting seat. The threaded rod in the longitudinal threaded rod handwheel passes through the threaded hole in the lower end surface of the two-way connecting seat, and the lower end surface is fixed to the upper end surface of the rotating base by bolts; rotating the handwheel can realize the front and rear longitudinal translation of the entire longitudinal guide rail assembly and the components thereon relative to the fixed base;

[0041] The rotating base is composed of two overlapping discs, one on top of the other. The upper disc has a long through hole on both sides of its upper end surface. The upper disc is fixed to the lower disc by bolts. Loosening the bolts can make the upper disc drive the components on it to rotate relative to the lower disc.

[0042] The fixed base is a rectangular plate with a thickness of 10 mm as a whole, and is fixed to the lower disc of the rotating base by bolts.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] 1. The downward pressure of the cutter head is set by increasing and decreasing the weight. This design enables the test device to be tested by a universal threshing testing machine, which is simple and convenient without geographical restrictions.

[0045] 2. Use a sliding knife to apply pressure on the surface of the kernels on the corn cob. The pressure is constant. The knife will slide down during the kernel tipping process and will not change with the shaking and tipping of the corn kernels.

[0046] 3. The clamping mechanism uses a small rubber cone surface inside, which can make the crushed corn ears more firmly fixed and not easy to fall off. The combination of small magnet blocks and small rubber cone bottom plates can cope with crushed corn ears of different shapes and sizes.

[0047] 4. Use the inner and outer adjustment disks to adjust the swing amplitude of the clamping mechanism. The adjustment is more convenient and the adjustment range is larger during the test. The maximum swing amplitude can reach 30mm.

[0048] 5. There is a long slot on the right side of the long arm, which can be used to adjust the position of the long arm forward and backward to adjust the position of the cutter head; the long arm is fixed by a stop bolt, which makes it easy to lift, lower and fix during the test.

[0049] 6. A slide rail stop bolt is installed on the right side of the slide knife to fix the position of the knife head. During the test, two modes can be switched: applying a constant force on the surface of the corn kernels and relatively fixing the position.

[0050] 7. The application of displacement sensors and counting sensors can greatly reduce the labor intensity during the test and improve the accuracy of test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 is the general assembly diagram of the present invention;

[0052] Figure 2 It is an assembly diagram of the clamping power assembly of the present invention;

[0053] Figure 3 An exploded view of the clamping mechanism of the present invention;

[0054] Figure 4 It is the powertrain assembly diagram of the present invention;

[0055] Figure 5 An exploded diagram of the powertrain of the present invention;

[0056] Figure 6 It is an assembly diagram of the slide rail tray assembly of the present invention;

[0057] Figure 7 An exploded view of the slide rail tray assembly of the present invention;

[0058] Figure 8 It is the assembly drawing of the base assembly of the present invention.

[0059] In the figure: A, clamping power assembly; B, slide rail tray assembly; C, base assembly; 1, clamping mechanism; 2, power assembly; 3, hand wheel; 4, locking nut; 5, push plate; 6, rubber cone side plate; 7, rubber cone bottom plate; 8, magnet pad; 9, fixing frame; 10, fastening bolt; 11, connecting plate; 12, motor; 13, inner adjustment disk; 14, outer adjustment disk; 15, double-head connector; 16, large bearing; 17, small bearing; 18, connecting seat; 19 , mounting seat; 20, slide rail; 21, displacement sensor; 22, counting sensor; 23, base frame; 24, mounting frame; 25, long arm; 26, long slot; 27, connecting plate; 28, long arm stop bolt; 29, slide rail mounting seat; 30, slide rail stop bolt; 31, weight; 32, weight plate; 33, slide knife; 34, knife head; 35, transverse guide rail assembly; 36, two-way connecting seat; 37, longitudinal guide rail assembly; 38, rotating base; 39, fixed base. DETAILED DESCRIPTION

[0060] See also Figure 1A reciprocating peeling test device for broken corn cobs and kernels, comprising a clamping power assembly (A), a slide tray assembly (B) and a base assembly (C); the clamping power assembly is installed above a connecting seat (18) by means of bolts (A), and is located directly below a fixed knife (33) in the slide tray assembly (B); the slide tray assembly (B) is located above the base assembly (C), and is fixed to the upper end surface of the base assembly (C) by means of bolts; the base assembly (C) is the base of the entire test device, and is located at the bottom of the entire test device, and is used to install the slide tray assembly (B);

[0061] See also Figure 2 The clamping power assembly (A) comprises a clamping mechanism (1) and a power assembly (2); the clamping mechanism (1) is located on the upper left side of the clamping power assembly (A) and is fixed to the upper end surface of the connecting seat (18) by four bolts; the power assembly (2) is located on the left side and below the entire clamping power assembly (A) and is fixed to the slide rail tray assembly (B) by bolts.

[0062] See also Figure 3 The clamping mechanism (1) comprises a hand wheel (3), a locking nut (4), a push plate (5), two rubber cone side plates (6), three rubber cone bottom plates (7), a plurality of magnetic pads (8), a fixing frame (9), two fastening bolts (10) and a connecting plate (11);

[0063] The hand wheel (3) is composed of a turntable, a threaded rod installed at the center of the end face of the turntable, and a buckle at the top of the threaded rod. The threaded rod passes through the threaded hole at the center of the left vertical plate of the fixing frame (9) and the locking nut (4). The buckle at the top of the threaded rod is installed in the circular blind hole at the center of the end face of the push plate (5) and is fixed by fixing bolts on the two side end faces of the push plate (5).

[0064] The locking nut (4) is installed on the threaded rod in the hand wheel (3) and is located outside the left vertical plate of the fixing frame (9). After the hand wheel (3) is adjusted, the locking nut (4) is tightened to fix the hand wheel (3) and the push plate (5) connected to the top thereof;

[0065] The push plate (5) is a rectangular steel plate with a thickness of 15 mm, with 10 mm chamfers on both sides, and a circular blind hole is opened at the center of the front end surface. The blind hole is connected to the buckle at the top of the hand wheel (3) and fixed by fixing bolts on the left and right end surfaces; the hand wheel (3) can be rotated relative to the push plate (5) by adjusting the tightness of the fixing bolts;

[0066] The two rubber cone side plates (6) are rectangular in outline and covered with small quadrangular pyramids; they are respectively attached to the right end surface of the push plate (5) and the left end surface of the right vertical plate of the fixing frame (9); they are used to increase the friction between them in the process of clamping the crushed corn ears, so as to prevent the crushing of the corn ears during the test from affecting the accuracy of the test data;

[0067] The outer contours of the three rubber conical bottom plates (7) are all in the shape of a rectangular parallelepiped, the upper end surface is covered with small rubber quadrangular pyramids, and the lower body is made of 45# steel; the conical surfaces of the three rubber conical bottom plates (7) face upwards, and the side surfaces are fitted and fixed to the upper end of the magnet pad (8) below;

[0068] The plurality of magnetic pads (8) are all rectangular plate-shaped pads, and different sizes can be changed according to the requirements of the crushing of fruit ears, and can also be stacked on each other to change the support height; the lower end surface is adsorbed on the cross section of the bottom plate of the fixing frame (9), and the upper end surface is adsorbed and fixed on the rubber cone bottom plate (7) by magnetic force;

[0069] The fixing frame (9) is welded together by two left and right vertical plates and a bottom plate placed horizontally in the middle of the lower end; a threaded hole is opened at the center of the left vertical plate to cooperate with the threaded rod at the front end of the hand wheel (3) to realize the feeding and retreat of the push plate (5); a rubber cone side plate (6) is pasted on the left end surface of the right vertical plate; a circular hole with a diameter of 30 mm is opened at the center of the lower end surface of the lower bottom plate, and threaded holes with a diameter of 10 mm are opened on the front and rear side end surfaces, and the two threaded holes are connected to the circular hole at the center to be fixed to the lower connecting plate (11);

[0070] The two fastening bolts (10) are 10 mm in diameter and are both provided with nuts, and are installed in threaded holes at the center of the front and rear end surfaces of the bottom plate of the fixing frame (9); they are used to fasten the fixing frame (9) and the connecting plate (11) below;

[0071] The connecting plate (11) is a rectangular steel plate with a thickness of 15 mm, with a cylindrical column with a diameter of 30 mm welded at the center, and a bolt hole is opened at the four corners of the upper and lower end surfaces; the circular column welded at the center of the upper end surface passes through the circular hole in the center of the lower end surface of the bottom plate below the fixing frame (9); the connection between the two is achieved, and at the same time the fixing frame (9) can rotate around the cylindrical column in the center of the upper end surface of the connecting plate (11); when the fastening bolts (10) are tightened, the two are fixed.

[0072] See also Figures 4 to 5 The power assembly (2) comprises a motor (12), an inner adjustment disk (13), an outer adjustment disk (14), a double-head connector (15), a large bearing (16), a small bearing (17), a connecting seat (18), a mounting seat (19), a slide rail (20), a displacement sensor (21) and a counting sensor (22);

[0073] The motor (12) is located at the rear end of the entire test device and is fixed to the mounting frame (24) by four bolts; a flat key slot is provided on the power output shaft of the motor (12) and is fixed by the flat key and a circular through hole with a key slot at the center of the inner adjustment disk (13); the motor is responsible for providing power to the entire test device;

[0074] The main body of the inner adjustment disk (13) is a disk with a thickness of 10 mm and a diameter of 115 mm. A cylinder with a flat keyway inside is fixed at the center of the rear end surface by welding. A keyway is opened on the front end surface and is connected to the outer adjustment disk (14) through a flat key. Along the direction of the keyway on the front end surface, two long strip through holes are opened on both sides of the keyway on the front end surface of the inner adjustment disk (13). The four long strip through holes are fixed to the outer adjustment disk (14) by a bolt respectively, and the four bolts in the four long strip through holes can move the outer adjustment disk (14) along the keyway direction on the front end surface of the inner adjustment disk (13) to adjust the eccentricity.

[0075] The outer adjustment disk (14) is a disk with a thickness of 10 mm and a diameter of 100 mm, with a keyway at the center, and connected to the inner adjustment disk (13) using a flat key; a cylindrical shaft is welded at the center of the outer end surface, passing through the inside of the large bearing (16) and fixed to the double-head connector (15); four threaded holes are opened around the disk, and bolts pass through the four long strip through holes of the inner adjustment disk (13) and the four threaded holes around the outer adjustment disk (14), so as to fix the inner adjustment disk (13) and the outer adjustment disk (14) together;

[0076] The double-end connector (15) is formed by welding the outer ends of two shafts with threads at the tops of two different diameters to two cylinders of different diameters, wherein the thicker shaft end is welded to the center of the outer side of the large diameter cylinder, and the thinner shaft end is fixed to the center of the outer side of the small diameter cylinder by welding, and the front threads of the two shafts are connected and fixed by nuts to form a whole; the large diameter cylinder is located at the front end of the outer adjustment disk (14), and the large bearing (16) on the outer side of the cylindrical shaft at the center of the outer adjustment disk (14) is fixed by a retaining spring, and the small diameter cylinder is located at the two columns on the right side of the base frame (23), and the small bearing (17) installed in the center of the two columns is fixed by a retaining spring;

[0077] The large bearing (16) has an outer diameter of 52 mm and an inner diameter of 20 mm; the inner ring is fixed to a cylindrical shaft welded at the center of the outer adjustment disk (14), and the outer ring is fixed to the inside of the large diameter cylinder of the double-head connector (15) by a retaining ring;

[0078] The small bearing (17) has an outer diameter of 30 mm and an inner diameter of 10 mm; the inner ring is fixed between two uprights on the right side of the base frame (23), and the outer side is fixed to the inside of the small diameter cylinder of the double-head connector (15) through a retaining spring;

[0079] The main body of the connecting seat (18) is a steel plate with a thickness of 10 mm. The whole is a rectangular plate with two 30 mm chamfers on the right side. Two columns are welded on the upper end surface in the middle of the chamfers. The upper part of the columns is provided with circular through holes, which are fixed to the inner ring of the small bearing (17) by bolts.

[0080] The mounting seat (19) is composed of an upper mounting plate and a lower sliding seat, which are fixed by four bolts; the upper mounting plate is provided with circular through holes at four corners, and is fixed to the connecting plate (11) by bolts; a circular through hole is provided on both sides of the center of the left and right end surfaces of the lower sliding seat, and two cylindrical slideways inside the slide rail pass through the circular through holes to connect the two; a small elliptical column is welded at the center of the lower part of the front end surface of the lower sliding seat, which is used to cooperate with the counting sensor (22) to complete the counting operation;

[0081] The slide rail (20) is composed of a lower fixing plate, two side vertical plates on the left and right sides, and two cylindrical slideways at the upper end; the lower fixing plate is connected to fix the entire slide rail (20) on the bottom frame (23) by bolts, and the two vertical plates on the left and right sides are used to fix the two cylindrical slideways, and the two cylindrical slideways pass through two cylindrical through holes at the left and right centers of the lower part of the lower slide seat under the mounting seat (19), so that the mounting seat (19) drives the upper mechanism to slide left and right along the slide rail (20);

[0082] The displacement sensor (21) is installed in a circular through hole at the left end surface of the left vertical plate of the slide rail (20) to record the displacement of the mounting seat (19) when sliding left and right;

[0083] The counting sensor (22) is mounted on the middle of the front end surface of the lower fixed plate of the slide rail (20) by magnetic attraction, and is used to record the number of times the mounting seat (19) slides left and right.

[0084] See also Figure 6 to Figure 7 The slide rail tray assembly (B) comprises a base frame (23), a mounting frame (24), a long arm (25), a long slot (26), a connecting plate (27), a long arm stop bolt (28), a slide rail mounting seat (29), a slide rail stop bolt (30), a weight (31), a weight plate (32), a slide knife (33) and a knife head (34);

[0085] The base frame (23) is welded from a 10 mm thick steel plate, and is welded from an upper long plate, a lower short plate, left and right supporting vertical plates, and a right triangular rib plate; four circular through holes with a diameter of 7 mm are distributed on the upper end surface of the left side of the upper long plate, and the slide rail (20) is fixed by bolts; four circular through holes with a diameter of 12 mm are distributed on the right side, and are fixed together with the mounting frame (24) by bolts; a circular through hole with a diameter of 8 mm is distributed at each of the four corners of the lower short plate, and the entire base frame (23) is fixed to the upper end surface of the base assembly (C) by bolts;

[0086] The mounting frame (24) is fixed to the upper right side of the base frame (23) by four bolts with a diameter of 12 mm, and is welded with steel plates throughout; a motor mounting seat is welded to the middle part of the rear side, and the motor (12) is fixed to the mounting frame (24) by four bolts; the left and right sides are welded into double-column-shaped clamping plates, and the top is provided with circular through holes with the same axis and the same diameter in the front-to-back direction, for placing and fixing the long arm (25);

[0087] The long arm (25) is a rectangular long plate with a long slot (26) on the right side in the front-to-back direction. The long arm (25) is installed on the upper right side of the mounting frame (24) by a bolt with a thread at the end and an optical axis in the middle. The long arm (25) can rotate relative to the mounting frame (24); the left and right sides are placed flush between the clamping plates at the upper left end of the mounting frame (24), and circular through holes are opened on both sides of the clamping plates. The long arm stop bolt (28) can be used to fix the long arm (25) as a whole on the top of the mounting frame (24);

[0088] The connecting plate (27) is a rectangular steel plate fixed to the left end face of the long arm (25) by welding, and a bolt hole with a diameter of 8 mm is opened in the middle of the upper side of the right end face for connecting with the slide rail stop bolt (30); the lower part is evenly distributed with 4 circular through holes with a diameter of 5 mm, and the slide rail mounting seat (29) is fixed to the left end face of the connecting plate (27) by bolts;

[0089] The slide rail mounting seat (29) is formed by cutting square steel, and is convex on the right side and evenly distributed with four threaded blind holes with a diameter of 5 mm, and is fixed to the connecting plate (27) by bolts; a slide groove is opened on the left end surface, and is in contact with the slide rail fixed on the right side of the slide knife (33), wherein the slide knife (33) can slide relatively around the slide rail mounting seat (29);

[0090] The weight plate (32) is fixed on the upper end surface of the slide (33) by welding, and is a cubic box with an upper opening, and contains a weight (31) inside, and the weight (31) is replaceable;

[0091] The slide blade (33) is composed of a top welding plate, a right small guide rail and a left fixed blade. The top welding plate is fixed to the weight plate (32) by welding. The right guide rail is fixed in the slideway on the left side of the slide rail mounting seat (29). The left fixed blade is a long steel plate, which is fixed to the right guide rail by two countersunk bolts with a diameter of 4 mm. The entire slide blade (33) can slide relatively around the slide rail mounting seat (29).

[0092] The cutter head (34) is pasted on the lower end surface of the fixed cutter on the left side of the sliding cutter (33), and different materials can be replaced according to the situation during the test.

[0093] See also Figure 8The base assembly (C) is located at the bottom of the entire test bench, and includes a transverse guide rail assembly (35), a two-way connecting seat (36), a longitudinal guide rail assembly (37), a rotating base (38) and a fixed base (39);

[0094] The transverse guide rail assembly (35) is located at the uppermost end of the entire base assembly (C), and comprises an upper guide rail surface, a transverse guide rail body and a threaded rod handwheel; the upper guide rail surface is fixed to the base frame (23) by bolts, and the threaded rod handwheel passes through threaded holes on the transverse guide rail body and the upper end surface of the two-way connecting seat (36), and rotating the handwheel can realize the left and right lateral translation of the entire transverse guide rail assembly (35) and the components thereon relative to the fixed base (39);

[0095] The upper and lower end surfaces of the bidirectional connecting seat (36) are vertically provided with dovetail grooves that can be connected to the lower end surface of the transverse guide rail assembly (35) and the upper end surface of the longitudinal guide rail assembly (37), and threaded holes are provided in the middle of the dovetail grooves for connecting to the threaded rod handwheels on the transverse guide rail assembly (35) and the longitudinal guide rail assembly (37);

[0096] The longitudinal guide rail assembly (37) is located below the two-way connecting seat (36), and includes a longitudinal guide rail body and a longitudinal threaded rod handwheel. The upper end surface of the guide rail body is connected to the dovetail groove at the lower end surface of the two-way connecting seat (36). The threaded rod in the longitudinal threaded rod handwheel passes through the threaded hole in the lower end surface of the two-way connecting seat (36), and the lower end surface is fixed to the upper end surface of the rotating base (38) by bolts. Rotating the handwheel can realize the front and rear longitudinal translation of the entire longitudinal guide rail assembly (35) and the components thereon relative to the fixed base (39);

[0097] The rotating base (38) is composed of two overlapping discs, the upper disc having a long through hole on both sides of the upper end surface thereof and being fixed to the lower disc by bolts. Loosening the bolts can cause the upper disc to drive the components thereon to rotate relative to the lower disc.

[0098] The fixed base (39) is a rectangular plate with a thickness of 10 mm as a whole, and is fixed to the lower disk of the rotating base (38) by bolts.

[0099] Working principle of the present invention:

[0100] See also Figure 1The working principle of the reciprocating peeling test device for broken corn cobs of the present invention is as follows. The broken corn cobs are fixed inside the clamping mechanism (1), and the position of the sliding knife (33) is adjusted so that the knife head (34) at the top contacts the corn kernels on the surface of the broken cobs; the motor (12) is started to make the clamping mechanism (1) drive the broken cobs to move left and right, so that the kernels on the surface of the broken cobs shake left and right relative to the knife head (34) until the kernels are peeled off. During the test, the displacement and number of shaking are recorded by the displacement sensor (21) and the counting sensor (22);

[0101] See also Figures 2 to 5 The clamping power assembly (A) of the present invention works as follows. Adjust the number and height of the rubber cone bottom plate (7) and the magnet pad (8), turn the hand wheel (3) to push the push plate (5) forward, and clamp the core shaft part of the crushed corn cob; adjust the position of the slide knife (33) so that the knife head (34) is in contact with the corn kernels to be peeled off; turn on the switch of the motor (12), and the power is transmitted from the power output shaft to the inner adjustment disk (13) and the outer adjustment disk (14) fixed thereto, and then transmitted to the double-headed connector (15) by the large bearing (16) fixed to the outer adjustment disk (14). The double-headed connector (15) then transmits the power to the connecting seat (18) connected to the other end. The connecting seat (18) moves the motor (12) under the action of the slide rail (20). ) is converted into left-right sliding motion, and drives the clamping mechanism (1) fixed above it to slide left-right, thereby driving the crushed corn ears fixed inside the clamping mechanism (1) to shake left-right, so that the knife head (34) on the surface of the sliding knife (33) and the corn kernels on the surface of the crushed corn ears produce relative movement, thereby peeling off the corn kernels; in this process, the displacement sensor (21) measures the amplitude of the left-right shaking of the crushed corn ears, and the counting sensor (22) records the number of shaking times required for the corn kernels to be peeled off; at the same time, the relative position of the outer adjustment disk (14) and the inner adjustment disk (13) can be adjusted to change the eccentricity, thereby changing the amplitude of the left-right shaking of the crushed corn ears, and the maximum shaking amplitude can reach 30 mm;

[0102] See also Figure 6 to Figure 7 The working principle of the slide rail tray assembly (B) of the present invention is as follows. During the test, first loosen the long arm stop bolt (28) and lift the long arm (25) to the right, lower the long arm (25) and adjust the position of the slide knife (33) relative to the corn kernels on the surface of the crushed ear. After the adjustment is completed, tighten the long arm stop bolt (28); fix the long arm (25) to fix the position of the head (34) of the slide knife (33) relative to the corn kernels on the surface of the crushed ear; adjust the weight of the weight (31) in the weight plate (32), turn on the motor (12) to perform a kernel peeling test; during the test, the material and shape of the head (34) of the slide knife (33) can be replaced to meet different tests;

[0103] See also Figure 8The working principle of the base assembly (C) of the present invention is as follows. By rotating the transverse screw hand wheel in the transverse guide rail assembly (35), the entire transverse guide rail assembly (35) and the components above it can be driven to move horizontally left and right; similarly, by rotating the longitudinal screw hand wheel in the longitudinal guide rail assembly (37), the components above the longitudinal guide rail assembly (37) can be driven to move longitudinally forward and backward; by rotating the upper disc in the rotating base (38), all the components above it can be driven to rotate around the central axis of the lower disc.

Claims

1. A reciprocating peeling test device for broken corn ears and kernels, characterized in that: It comprises a clamping power assembly (A), a slide rail tray assembly (B) and a base assembly (C); the clamping power assembly is installed above the connecting seat (18) by means of bolts (A) and is located directly below the fixed knife (33) in the slide rail tray assembly (B); the slide rail tray assembly (B) is located above the base assembly (C) and is fixed to the upper end surface of the base assembly (C) by means of bolts; the base assembly (C) is the base of the entire test device and is located at the bottom of the entire test device; The clamping power assembly (A) comprises a clamping mechanism (1) and a power assembly (2); the clamping mechanism (1) is located on the upper left side of the clamping power assembly (A) and is fixed to the upper end surface of the connecting seat (18) by four bolts; the power assembly (2) is located on the left side and below the entire clamping power assembly (A) and is fixed to the slide rail tray assembly (B) by bolts; The clamping mechanism (1) comprises a hand wheel (3), a locking nut (4), a push plate (5), two rubber cone side plates (6), three rubber cone bottom plates (7), a plurality of magnetic pads (8), a fixing frame (9), two fastening bolts (10) and a connecting plate (11); The hand wheel (3) is composed of a turntable, a threaded rod installed at the center of the end face of the turntable, and a buckle at the top of the threaded rod. The threaded rod passes through the threaded hole at the center of the left vertical plate of the fixing frame (9) and the locking nut (4). The buckle at the top of the threaded rod is installed in the circular blind hole at the center of the end face of the push plate (5) and is fixed by fixing bolts on the two side end faces of the push plate (5). The locking nut (4) is mounted on the threaded rod in the hand wheel (3) and is located outside the left vertical plate of the fixing frame (9); The push plate (5) is a rectangular steel plate with a thickness of 15 mm, with 10 mm chamfers on both sides, and a circular blind hole at the center of the front end surface. The blind hole is connected to the buckle at the top of the hand wheel (3) and fixed by fixing bolts on the left and right end surfaces; The two rubber cone side plates (6) are rectangular in outline and covered with small quadrangular pyramids; they are respectively attached to the right end surface of the push plate (5) and the left end surface of the right side vertical plate of the fixing frame (9); The outer contours of the three rubber conical bottom plates (7) are all in the shape of a rectangular parallelepiped, the upper end surface is covered with small rubber quadrangular pyramids, and the lower body is made of 45# steel; the conical surfaces of the three rubber conical bottom plates (7) face upwards, and the side surfaces are fitted and fixed to the upper end of the magnet pad (8) below; The plurality of magnetic pads (8) are all rectangular plate-shaped pads, and different sizes can be changed according to the requirements of the crushing of fruit ears, and can also be stacked on each other to change the support height; the lower end surface is adsorbed on the cross section of the bottom plate of the fixing frame (9), and the upper end surface is adsorbed and fixed on the rubber cone bottom plate (7) by magnetic force; The fixing frame (9) is welded together by two left and right vertical plates and a bottom plate placed horizontally in the middle of the lower end; a threaded hole is opened at the center of the left vertical plate; a rubber cone side plate (6) is pasted to the left end surface of the right vertical plate; a circular hole with a diameter of 30 mm is opened at the center of the lower end surface of the lower bottom plate, and threaded holes with a diameter of 10 mm are opened on the front and rear side end surfaces, and the two threaded holes are connected to the circular hole at the center; The two fastening bolts (10) are 10 mm in diameter and are both provided with nuts, and are installed in the threaded holes at the center of the front and rear end surfaces of the bottom plate of the fixing frame (9); The connecting plate (11) is a rectangular steel plate with a thickness of 15 mm, with a cylindrical column with a diameter of 30 mm welded at the center, and a bolt hole is opened at the four corners of the upper and lower end surfaces; the circular column welded at the center of the upper end surface passes through the circular hole in the center of the lower end surface of the bottom plate below the fixing frame (9).

2. A corn ear kernel reciprocating peeling test device according to claim 1, characterized in that: The power assembly (2) comprises a motor (12), an inner adjustment disk (13), an outer adjustment disk (14), a double-head connector (15), a large bearing (16), a small bearing (17), a connecting seat (18), a mounting seat (19), a slide rail (20), a displacement sensor (21) and a counting sensor (22); The motor (12) is located at the rear end of the entire test device and is fixed to the mounting frame (24) by four bolts; a flat key slot is provided on the power output shaft of the motor (12) and is fixed by the flat key and a circular through hole with a key slot at the center of the inner adjustment disk (13); The main body of the inner adjustment disk (13) is a disk with a thickness of 10 mm and a diameter of 115 mm. A cylinder with a flat keyway inside is fixed by welding at the center of the rear end surface. A keyway is opened on the front end surface and connected to the outer adjustment disk (14) through a flat key. Along the direction of the keyway on the front end surface, two long strip through holes are opened on both sides of the keyway on the front end surface of the inner adjustment disk (13). The four long strip through holes are fixed to the outer adjustment disk (14) through a bolt respectively. The outer adjustment disk (14) is a disk with a thickness of 10 mm and a diameter of 100 mm, with a keyway at the center, and connected to the inner adjustment disk (13) using a flat key; a cylindrical shaft is welded at the center of the outer end surface, passing through the inside of the large bearing (16) and fixed to the double-head connector (15); four threaded holes are opened around the disk, and bolts pass through the four long strip through holes of the inner adjustment disk (13) and the four threaded holes around the outer adjustment disk (14), so as to fix the inner adjustment disk (13) and the outer adjustment disk (14) together; The double-end connector (15) is formed by welding the outer ends of two shafts with threads at the tops of two different diameters to two cylinders of different diameters, wherein the thicker shaft end is welded to the center of the outer side of the large diameter cylinder, and the thinner shaft end is fixed to the center of the outer side of the small diameter cylinder by welding, and the front threads of the two shafts are connected and fixed by nuts to form a whole; the large diameter cylinder is located at the front end of the outer adjustment disk (14), and the large bearing (16) on the outer side of the cylindrical shaft at the center of the outer adjustment disk (14) is fixed by a retaining spring, and the small diameter cylinder is located at the two columns on the right side of the base frame (23), and the small bearing (17) installed in the center of the two columns is fixed by a retaining spring; The large bearing (16) has an outer diameter of 52 mm and an inner diameter of 20 mm; the inner ring is fixed to a cylindrical shaft welded at the center of the outer adjustment disk (14), and the outer ring is fixed to the inside of the large diameter cylinder of the double-head connector (15) by a retaining ring; The small bearing (17) has an outer diameter of 30 mm and an inner diameter of 10 mm; the inner ring is fixed between two uprights on the right side of the base frame (23), and the outer side is fixed to the inside of the small diameter cylinder of the double-head connector (15) through a retaining spring; The main body of the connecting seat (18) is a steel plate with a thickness of 10 mm. The whole is a rectangular plate with two 30 mm chamfers on the right side. Two columns are welded on the upper end surface in the middle of the chamfers. The upper part of the columns is provided with circular through holes, which are fixed to the inner ring of the small bearing (17) by bolts. The mounting seat (19) is composed of an upper mounting plate and a lower sliding seat, which are fixed by four bolts; the upper mounting plate is provided with circular through holes at four corners, and is fixed to the connecting plate (11) by bolts; a circular through hole is provided on both sides of the center of the left and right end surfaces of the lower sliding seat, and two cylindrical slideways inside the slide rail pass through the circular through holes to connect the two; a small elliptical column is welded at the center of the lower part of the front end surface of the lower sliding seat; The slide rail (20) is composed of a lower fixing plate, two left and right side vertical plates and two cylindrical slideways at the upper end; the lower fixing plate is connected to fix the entire slide rail (20) on the base frame (23) by bolts, and the two cylindrical slideways pass through two cylindrical through holes at the left and right centers of the lower part of the lower slide seat below the mounting seat (19); The displacement sensor (21) is installed in a circular through hole at the left end surface of the left vertical plate of the slide rail (20); The counting sensor (22) is mounted on the middle part of the front end surface of the lower fixing plate of the slide rail (20) by magnetic attraction.

3. A corn ear kernel reciprocating peeling test device according to claim 1, characterized in that: The slide rail tray assembly (B) comprises a base frame (23), a mounting frame (24), a long arm (25), a long slot (26), a connecting plate (27), a long arm stop bolt (28), a slide rail mounting seat (29), a slide rail stop bolt (30), a weight (31), a weight plate (32), a slide knife (33) and a knife head (34); The base frame (23) is welded from a 10 mm thick steel plate, and is welded from an upper long plate, a lower short plate, left and right supporting vertical plates, and a right triangular rib plate; four circular through holes with a diameter of 7 mm are distributed on the upper end surface of the left side of the upper long plate, and the slide rail (20) is fixed by bolts; four circular through holes with a diameter of 12 mm are distributed on the right side, and are fixed together with the mounting frame (24) by bolts; a circular through hole with a diameter of 8 mm is distributed at each of the four corners of the lower short plate, and the entire base frame (23) is fixed to the upper end surface of the base assembly (C) by bolts; The mounting frame (24) is fixed to the upper right side of the base frame (23) by four bolts with a diameter of 12 mm, and is welded with steel plates throughout; a motor mounting seat is welded to the middle part of the rear side, and the motor (12) is fixed to the mounting frame (24) by four bolts; the left and right sides are welded into double-column-shaped clamping plates, and the tops are provided with circular through holes with the same axis and the same diameter in the front-to-back direction; The long arm (25) is a rectangular long plate with a long slot (26) on the right side in the front-to-back direction. It is installed on the upper right side of the mounting frame (24) through a bolt with a threaded end and an optical axis in the middle. The left and right sides are placed flush between the clamping plates on the upper left side of the mounting frame (24). The connecting plate (27) is a rectangular steel plate, which is fixed to the left end face of the long arm (25) by welding, and a bolt hole with a diameter of 8 mm is opened in the middle of the upper side of the right end face; the lower part is evenly distributed with 4 circular through holes with a diameter of 5 mm, and the slide rail mounting seat (29) is fixed to the left end face of the connecting plate (27) by bolts; The slide rail mounting seat (29) is formed by cutting square steel, with four threaded blind holes with a diameter of 5 mm evenly distributed on the right side and fixed to the connecting plate (27) by bolts; a slide groove is opened on the left end surface, which cooperates with the slide rail fixed on the right side of the slide knife (33); The weight plate (32) is fixed on the upper end surface of the slide (33) by welding, and is a cubic box with an upper opening, and contains the weight (31); The slide knife (33) is composed of a top welding plate, a right small guide rail and a left fixed knife. The top welding plate is fixed to the weight plate (32) by welding. The right guide rail is fixed in the slideway on the left side of the slide rail mounting seat (29). The left fixed knife is a long steel plate and is fixed to the right guide rail by two countersunk bolts with a diameter of 4 mm. The cutter head (34) is pasted on the lower end surface of the fixed cutter on the left side of the sliding cutter (33).

4. The reciprocating peeling test device for broken corn ears and kernels according to claim 1, characterized in that: The base assembly (C) is located at the bottom of the entire test bench, and includes a transverse guide rail assembly (35), a two-way connecting seat (36), a longitudinal guide rail assembly (37), a rotating base (38) and a fixed base (39); The transverse guide rail assembly (35) is located at the uppermost end of the entire base assembly (C), and includes an upper guide rail surface, a transverse guide rail body, and a threaded rod handwheel; the upper guide rail surface is fixed to the base frame (23) by bolts, and the threaded rod handwheel passes through the threaded holes on the transverse guide rail body and the upper end surface of the bidirectional connecting seat (36); The upper and lower end surfaces of the bidirectional connecting seat (36) are vertically provided with dovetail grooves that can be connected to the lower end surface of the transverse guide rail assembly (35) and the upper end surface of the longitudinal guide rail assembly (37), and threaded holes are provided in the middle of the dovetail grooves; The longitudinal guide rail assembly (37) is located below the bidirectional connecting seat (36), and includes a longitudinal guide rail body and a longitudinal threaded rod handwheel. The upper end surface of the guide rail body is connected to the dovetail groove at the lower end surface of the bidirectional connecting seat (36). The threaded rod in the longitudinal threaded rod handwheel passes through the threaded hole in the lower end surface of the bidirectional connecting seat (36), and the lower end surface is fixed to the upper end surface of the rotating base (38) by bolts. The rotating base (38) is composed of two overlapping discs, the upper disc has a long through hole on both sides of the upper end surface, and is fixed to the lower disc by bolts; The fixed base (39) is a rectangular plate with a thickness of 10 mm as a whole, and is fixed to the lower disk of the rotating base (38) by bolts.

Images