CN212155574U - Ultra-large torque brake device - Google Patents

Abstract

The utility model relates to a beam-pumping unit brake technical field is an ultra-large torque brake device, directly drive the motor including base and the permanent magnetism of fixed mounting at base right part upside, the permanent magnetism directly drives the output shaft that both ends are located its the place ahead and rear respectively around motor inside is equipped with, still including stopping tile assembly, brake disc assembly and drive control device, output shaft front end outside fixed mounting has the brake disc assembly. The utility model has the advantages of simple structure and reliability, design benefit, through setting up the round pin axle, can make the shoe assembly normal state of stopping separate with the brake disc assembly down, avoid operating the in-process to the wearing and tearing of part, the required precision to manufacturing has been reduced simultaneously, drive control device drives the body frame left part and upwards rotates the back, the leading flank and the trailing flank of every braking vane all lean on tightly with the thin brake disc side that corresponds the position, make thin brake disc receive the normal pressure of braking vane and produce great frictional force, thereby provide braking torque to the output shaft, reliability and security when improving the output shaft braking.

Description

Ultra-large torque brake device

Technical Field

The utility model relates to a beam-pumping unit brake technical field is a super large moment of torsion arresting gear.

Background

The permanent magnet direct drive motor can replace a common motor and a speed reducer and can output very low rotating speed and super large torque, the speed reducing function of the speed reducer is cancelled, the braking torque required by the super large torque permanent magnet direct drive motor is very large, and the conventional braking mode adopts tooth-shaped insertion type, pin-in type or tile-holding type friction braking. The tooth-shaped insertion type brake mode and the pin-type brake mode can brake only by accurately adjusting the position of the output shaft of the motor and just inserting the brake tooth or the brake pin into the corresponding position of the brake disc, and the brake operation is difficult. The tile holding type braking mode mostly adopts a pair of holding tiles and mostly adopts wheel type or disc type braking, and the braking friction force required is huge because of no reducer action, so that the safety and reliability are poor.

Disclosure of Invention

The utility model provides a super large moment of torsion arresting gear has overcome above-mentioned prior art not enough, and it can effectively solve the poor problem of current arresting gear fail safe nature.

The technical scheme of the utility model is realized through following measure: a braking device with ultra-large torque comprises a base and a permanent magnet direct drive motor fixedly arranged on the upper side of the right part of the base, wherein an output shaft with the front end and the rear end respectively positioned at the front and the rear of the output shaft is arranged in the permanent magnet direct drive motor, the braking device also comprises a braking shoe assembly, a braking disc assembly and a drive control device, the braking disc assembly is fixedly arranged on the outer side of the front end of the output shaft, the braking disc assembly comprises a thick base disc and a thin braking disc, the outer side of the front end of the output shaft is fixedly provided with the thick base disc, the front side of the thick base disc is fixedly provided with at least two thin braking discs arranged at intervals along the front and rear direction, the front side of the base corresponding to the position below the thick base disc is provided with the braking shoe assembly, the braking shoe assembly comprises a main frame and braking plates, the right part of the main frame is rotatably arranged on the front side of the right end of the base through an upper, the lower part of the main frame is provided with a driving control device which can enable the left part of the main frame to rotate upwards.

The following are further optimization or/and improvement of the technical scheme of the utility model:

the thin brake disc can be in a ring shape, at least two bosses protruding forwards are fixed on the front side of the thick base disc along the circumference, each boss is close to the inner side of the thin brake disc located at the rearmost part, the central part of the front side of each boss is provided with a substrate connecting hole which is through from front to back, the front side of the thin brake disc corresponding to the position of each substrate connecting hole is provided with brake disc connecting holes which are through from front to back, the thick base disc and the thin brake disc sequentially penetrate through the substrate connecting holes through the front ends and are fixedly installed together with the substrate connecting bolts of the brake disc connecting holes corresponding to the positions, and a flat gasket fixedly installed on the outer side of each substrate connecting bolt is arranged between every two adjacent thin brake.

The main frame can comprise a rear connecting plate and a front connecting plate, a rear connecting plate is arranged below the rear side of the thick base disc, a front connecting plate is arranged in front of the rear connecting plate, the rear side of the rear connecting plate is positioned below the front side of the foremost thin brake disc, a front through hole which is through from front to back is arranged at the right part of the front connecting plate, a rear through hole which is through from front to back is arranged at the front side of the rear connecting plate corresponding to the position of the front through hole, the rear end of an upper pin shaft sequentially passes through the front through hole and the rear through hole and is rotatably arranged at the front side of the base, a brake plate is arranged in front of the rear connecting plate corresponding to the position between every two adjacent thin brake discs, each brake plate is in an inverted T shape, a left communication hole and a right communication hole which are through from front to back are respectively arranged at the left part and the right part of each brake plate, a front left connecting hole and a rear connecting hole which are through from front, the front connecting plate and the rear connecting plate are fixedly installed together through a left fixing bolt with the front end sequentially penetrating through the front left connecting hole, the left communicating hole and the rear left connecting hole and a right fixing bolt with the front end sequentially penetrating through the front right connecting hole, the right communicating hole and the rear right connecting hole, a first wave-shaped gasket fixedly installed on the outer side of the left fixing bolt is arranged between the front connecting plate and one brake plate located at the front most position, a second wave-shaped gasket fixedly installed on the outer side of the right fixing bolt is arranged between the front connecting plate and one brake plate located at the front most position, a second wave-shaped gasket fixedly installed between each two adjacent brake plates and a second wave-shaped gasket fixedly installed on the outer side of the right fixing bolt is arranged between the rear connecting plate and one brake plate located at the rear most position.

The brake shoe assembly can further comprise a wedge-surface brake plate, a wedge-surface brake plate is arranged between the brake plate located at the rearmost position and the rear connecting plate, a lower inclined surface which is high in front and low in rear is arranged on the rear side of the upper end of the wedge-surface brake plate, an upper inclined surface matched with the lower inclined surface is arranged on the front side of the outer end of the thick base plate, a right through hole which is through from front to rear is arranged on the right portion of the wedge-surface brake plate corresponding to the rear right connecting hole, the outer side of the rear portion of the right fixing bolt is located in the right through hole, a left through hole which is through from front to rear and is in a sector ring shape is arranged on the left portion of the wedge-surface brake plate corresponding to the rear left connecting hole, the left through hole and the right through hole are coaxially arranged, third wave-shaped gaskets fixedly arranged on the outer side of the left fixing bolt are arranged on the outer side of the left fixing bolt, third wave-shaped gaskets are arranged on the outer sides of the left fixing bolt, and fixedly arranged on the outer sides of the brake plate And a fourth wave washer therebetween.

The brake shoe assembly can also comprise a rear connecting arm and a rear cam push rod, the lower side of the left part of the wedge-face brake plate is fixedly provided with the rear connecting arm, the lower part of the rear connecting arm is fixedly provided with the rear cam push rod with the front end positioned at the front side of the rear connecting arm, the front side of the rear connecting arm is provided with a drive control device capable of enabling the rear cam push rod to rotate up and down, the drive device comprises a cam assembly and a control device, the cam assembly comprises a cam base plate and a rear cam plate, a 7-shaped cam base plate is arranged below the rear connecting arm, the upper side of the right part of the cam base plate is rotatably arranged at the front side of the base through a lower pin shaft, the rear cam plate with the upper part positioned at the front side of the lower part of the rear connecting arm is fixedly arranged at the rear side of the rear cam plate, the rear adjusting hole is provided with a rear adjusting hole which is communicated with the front and rear adjusting hole, the rear adjusting hole comprises, the second adjusting hole section is a strip-shaped hole which is inclined in a left-high-right-low shape, the right end of the first adjusting hole section and the left end of the second adjusting hole section are in smooth transition, the middle of the rear cam push rod is positioned on the inner side of the right part of the second adjusting hole section, and a control device capable of enabling the lower part of the cam substrate to rotate leftwards is arranged below the rear cam plate.

The cam assembly can further comprise a front cam plate, a front connecting arm is fixed on the lower side of the left portion of the front connecting plate, a front cam push rod located in front of the rear cam push rod is fixedly mounted on the lower portion of the front connecting arm, a front cam plate located on the rear side of the lower portion of the front connecting arm is fixedly mounted on the rear side of the left portion of the cam substrate, a front adjusting hole which is through from front to back is formed in the front side of the front cam plate, the front adjusting hole comprises a third adjusting hole section and a fourth adjusting hole section which are sequentially communicated from left to right, the third adjusting hole section is a long-strip-shaped hole which is inclined in a left-low-right-high manner, the fourth adjusting hole section is a long-strip-shaped hole which is inclined in a left-high-right-low manner, the right end of the third adjusting hole section and the left end of the fourth adjusting hole section.

The projections of the fourth adjusting hole section and the second adjusting hole section on the vertical plane can be the same, and the lower part of the first adjusting hole section is positioned on the left of the lower part of the third adjusting hole section.

The operating device comprises a support, an installation sleeve, a mandrel, a nut sleeve, a screw rod, a pull rod, a crank arm and a rocking handle, wherein the support is fixedly installed on the left side of the base, the installation sleeve is rotatably installed on the upper portion of the support and is cylindrical, the central axis of the installation sleeve is arranged in the left-right direction, the mandrels rotatably installed on the left side and the right side of the installation sleeve through bearings are arranged in the installation sleeve, the nut sleeve coaxially arranged with the mandrel is fixedly installed on the outer side of the right portion of the mandrel, the screw rod coaxially connected with the nut sleeve is arranged in the nut sleeve, the pull rod coaxially arranged with the right end of the screw rod is fixedly installed on the right end of the screw rod, a groove which is vertically communicated and has a right opening is formed in the right end of the pull rod, a front hinge hole which is communicated from front to back is formed in the front side of the front end of the right end of the pull rod, a back hinge, the left end of the mandrel is fixedly provided with a crank arm with the lower end positioned below the mandrel, and the lower part of the crank arm is fixedly provided with a rocking handle with the right end positioned at the right side and coaxially arranged with the mandrel.

The utility model has the advantages of simple structure and reliability, design benefit, through setting up the round pin axle, can make the shoe assembly normal state of stopping separate with the brake disc assembly down, avoid operating the in-process to the wearing and tearing of part, the required precision to manufacturing has been reduced simultaneously, drive control device drives the body frame left part and upwards rotates the back, the leading flank and the trailing flank of every braking vane all lean on tightly with the thin brake disc side that corresponds the position, make thin brake disc receive the normal pressure of braking vane and produce great frictional force, thereby provide braking torque to the output shaft, reliability and security when improving the output shaft braking.

Drawings

Fig. 1 is a schematic structural view of the preferred embodiment of the present invention.

FIG. 2 is an enlarged sectional top view of the brake disc assembly of FIG. 1.

FIG. 3 is a top view enlarged schematic view of the brake shoe assembly of FIG. 1.

Fig. 4 is a schematic sectional view in the direction D-D in fig. 3.

FIG. 5 is an enlarged sectional view of the brake shoe assembly of FIG. 1 in the direction A-A.

FIG. 6 is an enlarged sectional view of the cam assembly of FIG. 1 in the direction B-B.

FIG. 7 is an enlarged sectional view of the manipulating device of FIG. 1 in the direction C-C.

The codes in the figures are respectively: 1 is a base, 2 is a permanent magnet direct drive motor, 3 is an output shaft, 4 is a thick base plate, 5 is a boss, 6 is a base plate connecting bolt, 7 is an upper inclined surface, 8 is a thin brake disc, 9 is a front connecting plate, 10 is a rear connecting plate, 11 is a left fixing bolt, 12 is a right fixing bolt, 13 is a first wave washer, 14 is a second wave washer, 15 is a third wave washer, 16 is a fourth wave washer, 17 is a brake plate, 18 is an upper pin shaft, 19 is a wedge surface brake plate, 20 is a lower inclined surface, 21 is a front connecting arm, 22 is a rear connecting arm, 23 is a left through hole, 24 is a rear cam push rod, 25 is a front cam push rod, 26 is a cam base plate, 27 is a lower pin shaft, 28 is a rear cam plate, 29 is a first adjusting hole section, 30 is a second adjusting hole section, 31 is a front cam plate, 32 is a third adjusting hole section, 33 is a fourth adjusting hole section, 34 is a mounting sleeve, 35 is a mounting sleeve, and 36 is a mandrel, 37 is a nut sleeve, 38 is a screw rod, 39 is a pull rod, 40 is a crank arm, 41 is a rocking handle, 42 is a bearing, and 43 is a flat washer.

Detailed Description

The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.

In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.

The invention will be further described with reference to the following examples and drawings:

as shown in the attached drawings 1, 2, 3, 4, 5, 6 and 7, the ultra-large torque brake device comprises a base 1 and a permanent magnet direct drive motor 2 fixedly installed on the upper side of the right part of the base 1, an output shaft 3 with the front end and the rear end respectively positioned on the front side and the rear side of the permanent magnet direct drive motor 2 is arranged inside the permanent magnet direct drive motor, a brake shoe assembly, a brake disc assembly and a drive control device are further included, a brake disc assembly is fixedly installed on the outer side of the front end of the output shaft 3 and comprises a thick base disc 4 and a thin brake disc 8, the outer side of the front end of the output shaft 3 is fixedly installed with the thick base disc 4, at least two thin brake discs 8 arranged at intervals along the front and rear direction are fixedly installed on the front side of the thick base disc 4, a brake shoe assembly is arranged on the front side of the base 1 corresponding to the position below the thick base disc 4 and comprises a main frame and a brake plate 17, the right part of the main frame is rotatably installed on the front side of the right end of The brake plate 17 against which the chassis 8 abuts, and a drive control device capable of rotating the left part of the main frame upward is attached to the lower part of the main frame.

According to requirements, the thick base disc 4 and the output shaft 3 are fixedly installed together through keys and bolts, and the gaps between every two adjacent thin brake discs 8 are the same. In the use, through setting up round pin axle 18, can make the brake shoe assembly separate with the brake disc assembly under the normal condition, avoid wearing and tearing to the part in the operation process, reduced the precision requirement to the manufacturing simultaneously, drive control device drives the main frame left part and upwards rotates the back, the leading flank and the trailing flank of every braking vane 17 all lean on tightly with the thin brake disc 8 side of corresponding position, make thin brake disc 8 receive the normal pressure of braking vane 17 and produce great frictional force, thereby provide braking torque to output shaft 3, can increase area of contact through increasing the quantity of thin brake disc 8 and braking vane 17, thereby increase frictional force, increase the braking torque of output shaft 3, reliability and security when improving output shaft 3 and braking.

The ultra-large torque braking device can be further optimized or/and improved according to actual needs:

as shown in the attached drawings 1 and 2, the thin brake disc 8 is in a ring shape, at least two bosses 5 protruding forwards are fixed on the front side of the thick base disc 4 along the circumference, each boss 5 is close to the inner side of the thin brake disc 8 positioned at the rearmost part, a substrate connecting hole penetrating through the front and the rear is formed in the center of the front side of each boss 5, brake disc connecting holes penetrating through the front and the rear are formed in the front side of the thin brake disc 8 corresponding to the position of each substrate connecting hole, the thick base disc 4 and the thin brake disc 8 are fixedly installed together through the substrate connecting holes and the substrate connecting bolts 6 of the brake disc connecting holes corresponding to the position through the front ends, and a flat washer 43 fixedly installed on the outer side of the substrate connecting bolt 6 is arranged between every two adjacent thin brake discs.

According to the requirement, five annular thin brake discs 8 are fixedly arranged in the center of the front side of the thick base disc 4 from back to front at intervals in sequence, and the boss 5 is cylindrical. In the use, through setting up boss 5 and base plate connecting bolt 6, can increase the intensity that thin brake disc 8 and thick base plate 4 fixed mounting are in the same place, through setting up flat washer 43, can be convenient for control the clearance between every two adjacent thin brake discs 8.

As shown in attached figures 1, 3, 4 and 5, the main frame comprises a rear connecting plate 10 and a front connecting plate 9, a rear connecting plate 10 is arranged below the rear side of a thick base plate 4, a front connecting plate 9 is arranged in front of the rear connecting plate 10 and positioned below the front side of a front-most thin brake disc 8, a front through hole which is communicated with the front and the rear is arranged at the right part of the front connecting plate 9, a rear through hole which is communicated with the front and the rear is arranged at the front side of the rear connecting plate 10 corresponding to the position of the front through hole, the rear end of an upper pin shaft 18 sequentially passes through the front through hole and the rear through hole and is rotatably arranged at the front side of a base 1, each brake plate 17 is inverted T-shaped, a left communication hole and a right communication hole which are communicated with the front and the rear are respectively arranged at the left part and the right part of each brake plate 17, a front left connecting hole and a rear left connecting hole which are communicated with the front and the rear are respectively arranged at the, the front connecting plate 9 and the rear connecting plate 10 are fixedly installed together through a left fixing bolt 11 with the front end sequentially penetrating through a front left connecting hole, a left communicating hole and a rear left connecting hole and a right fixing bolt 12 with the front end sequentially penetrating through a front right connecting hole, a right communicating hole and a rear right connecting hole, first wave washers 13 fixedly installed on the outer side of the left fixing bolt 11 are arranged between the front connecting plate 9 and one brake plate 17 located at the forefront position, between every two adjacent brake plates 17, between the rear connecting plate 10 and one brake plate 17 located at the rearmost position, and second wave washers 14 fixedly installed on the outer side of the right fixing bolt 12 are arranged between the front connecting plate 9 and one brake plate 17 located at the forefront position, between every two adjacent brake plates 17, and between the rear connecting plate 10 and one brake plate 17 located at the rearmost position.

According to the requirement, the front side and the rear side of the upper section of the brake plate 17 are both provided with chamfers, the rear side of the first wave washer 13 is provided with a first flat washer 43 arranged outside the left fixing bolt 11, the rear side of the second wave washer 14 is provided with a second flat washer 43 arranged outside the fixing bolt, and a lower fixing bolt is arranged between the front connecting plate 9 and the rear connecting plate 10 corresponding to the lower side position of the brake disc. In the use process, by arranging the first wave washer 13 and the second wave washer 14, when the brake plate 17 is inserted between the thin brake discs 8, the impact between the brake plate 17 and the thin brake discs 8 can be reduced through the first wave washer 13 and the second wave washer 14, and the pressure between the brake plate 17 and the thin brake discs 8 can be increased after the brake plate 17 is completely inserted between the thin brake discs 8, so that the friction force is increased, and the braking effect is enhanced.

As shown in fig. 1, 3, 4 and 5, the brake shoe assembly further comprises a wedge surface brake plate 19, a wedge surface brake plate 19 is arranged between the brake plate 17 at the rearmost position and the rear connecting plate 10, a lower inclined surface 20 with a high front and a low rear is arranged on the rear side of the upper end of the wedge surface brake plate 19, an upper inclined surface 7 matched with the lower inclined surface 20 is arranged on the front side of the outer end of the thick base plate 4, a right through hole which is through from front to rear is arranged on the right part of the wedge surface brake plate 19 corresponding to the rear right connecting hole, the outer side of the rear part of the right fixing bolt 12 is arranged in the right through hole, a left through hole 23 which is through from front to rear and is in a sector ring shape is arranged on the left part of the wedge surface brake plate 19 corresponding to the rear left connecting hole, the left through hole 23 and the right through hole are coaxially arranged, a third wave-shaped gasket 15 fixedly arranged on the outer side of the left fixing bolt 11 is arranged on the outer side of the left fixing bolt, fourth wave washers 16 fixedly installed between the outer sides of the right fixing bolts 12 are arranged between the brake plate 17 and the wedge surface brake plate 19 at the rearmost position and between the wedge surface brake plate 19 and the front side of the rear connecting plate 10.

According to the requirement, the wedge surface brake plate 19 is L-shaped, the upper end of the wedge surface brake plate 19 is positioned behind the middle part of the brake plate 17, and the front side of the upper end of the wedge surface brake plate 19 is provided with a chamfer. In the use, through setting up left through-hole 23, after brake plate 17 inserts between the thin brake disc 8, can continue upwards to insert thick basal disc 4 front side and lean on it with wedge face board 19 left part of stopping, further increase area of contact, increase frictional force, through setting up down inclined plane 20 and last inclined plane 7, can be convenient for insert thick basal disc 4 front side with wedge face board 19 of stopping, improve the security of braking operation.

As shown in fig. 1, 3, 4, 5 and 6, the brake shoe assembly further includes a rear connecting arm 22 and a rear cam push rod 24, the rear connecting arm 22 is fixed on the lower side of the left portion of the wedge-face brake plate 19, the rear cam push rod 24 with the front end located on the front side is fixedly installed on the lower portion of the rear connecting arm 22, a driving control device capable of enabling the rear cam push rod 24 to rotate up and down is installed on the front side of the rear connecting arm 22, the driving device includes a cam assembly and a control device, the cam assembly includes a cam base plate 26 and a rear cam plate 28, a cam base plate 26 in a shape of "7" is installed below the rear connecting arm 22, the upper side of the right portion of the cam base plate 26 is rotatably installed on the front side of the base 1 through a lower pin shaft 27, a rear cam plate 28 with the upper portion located on the front side of the lower portion of the rear connecting arm 22 is fixedly installed on the rear side of the left portion of the cam base plate 26, a rear adjusting hole penetrating through from front to back, the first adjusting hole section 29 is a long-strip-shaped hole inclined in a left-low-right-high shape, the second adjusting hole section 30 is a long-strip-shaped hole inclined in a left-high-right-low shape, the right end of the first adjusting hole section 29 and the left end of the second adjusting hole section 30 are in smooth transition, the middle of the rear cam push rod 24 is positioned on the inner side of the right part of the second adjusting hole section 30, and an operating device capable of enabling the lower part of the cam base plate 26 to rotate leftwards is arranged below the rear cam plate 28.

In the use, through setting up the back regulation hole, behind the 26 lower parts of cam base plate to the left-hand motion, the back cam push rod 24 that is located the inboard back in second regulation hole section 30 right part can follow second regulation hole section 30 and first regulation hole section 29 and remove and make the wedge face board 19 of stopping insert 4 front sides of thick basal discs and lean on tightly rather than, avoid the wedge face to stop board 19 and take place to interfere with thick basal disc 4 and cause equipment trouble, also can improve simultaneously the utility model discloses security among the operation process.

As shown in fig. 1, 3, 4, 5, and 6, the cam assembly further includes a front cam plate 31, a front connecting arm 21 is fixed on the lower side of the left portion of the front connecting plate 9, a front cam push rod 25 located in front of the rear cam push rod 24 is fixedly installed on the lower portion of the front connecting arm 21, a front cam plate 31 whose upper portion is located on the rear side of the lower portion of the front connecting arm 21 is fixedly installed on the rear side of the left portion of the cam base plate 26, a front adjusting hole is formed in the front side of the front cam plate 31 and runs through the front and rear portions, the front adjusting hole includes a third adjusting hole section 32 and a fourth adjusting hole section 33 which are sequentially communicated from left to right, the third adjusting hole section 32 is a long strip-shaped hole inclined in a left-low-right-high-right-high-long strip-shaped hole, the right end of the third adjusting hole section 32 is smoothly transited to the left end of the fourth adjusting hole section 33, and the middle portion of.

In the use, through setting up preceding regulation hole, the ascending pivoted in-process in cam base plate 26 left part can make braking vane 17 slowly insert between the thin brake disc 8, avoids braking vane 17 and thin brake disc 8 to take place to interfere and causes equipment trouble, also can improve simultaneously the utility model discloses security among the operation process.

As shown in fig. 1 and 6, the projections of the fourth adjusting hole section 33 and the second adjusting hole section 30 on the vertical plane are the same, and the lower part of the first adjusting hole section 29 is located at the left of the lower part of the third adjusting hole section 32.

In the use, through such setting, the braking board 17 inserts earlier between the thin brake disc 8 and leans on tightly to make the wedge face stop board 19 insert thick base plate 4 front side and lean on tightly simultaneously, can increase output shaft 3's braking torque simultaneously, reduces the braking in-process to thick base plate 4 and thin brake disc 8's impact, extension the utility model discloses a life.

As shown in fig. 1 and 7, the operating device includes a support 34, a mounting sleeve 35, a mandrel 36, a nut sleeve 37, a lead screw 38, a pull rod 39, a crank arm 40 and a rocking handle 41, the support 34 is fixedly mounted on the left side of the base 1, the mounting sleeve 35 is rotatably mounted on the upper portion of the support 34, the mounting sleeve 35 is in a cylindrical shape with a central axis arranged in the left-right direction, the mandrel 36 rotatably mounted on the left and right sides of the mounting sleeve 35 through a bearing 42 is arranged in the mounting sleeve 35, the nut sleeve 37 coaxially mounted with the mandrel 36 is fixedly mounted on the outer side of the right portion of the mandrel 36, the lead screw 38 connected with the nut sleeve 37 through a thread is arranged in the nut sleeve 37, the pull rod 39 coaxially mounted on the right end of the lead screw 38 is fixedly mounted on the right end of the lead screw 38, a groove with a vertical through opening facing to the right is arranged on the right end of the pull rod 39, a front through, the pull rod 39 and the cam base plate 26 are hinged together through pins arranged in the front hinge hole and the rear hinge hole, the left end of the mandrel 36 is fixedly provided with a crank arm 40, the lower end of the crank arm is positioned below the mandrel 36, and the lower part of the crank arm 40 is fixedly provided with a crank 41, the right end of which is positioned on the right side of the crank arm and is coaxially arranged with the mandrel 36.

The outer side of the mandrel 36 is rotatably mounted in the mounting sleeve 35 through a bidirectional thrust ball bearing 42 as required. In the use, through setting up nut cover 37 and lead screw 38, can convert the rotary motion of rocking handle 41 into the linear motion of pull rod 39, make cam base plate 26 lower part horizontal rotation at last, can also increase the rotation precision of cam base plate 26 in the operation process simultaneously, improve the utility model discloses security among the operation process.

Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.

Claims (8)

1. A braking device with ultra-large torque comprises a base and a permanent magnet direct drive motor fixedly arranged on the upper side of the right part of the base, wherein an output shaft with the front end and the rear end respectively positioned at the front and the rear of the output shaft is arranged in the permanent magnet direct drive motor, the braking device is characterized by also comprising a brake shoe assembly, a brake disc assembly and a drive control device, the brake disc assembly is fixedly arranged on the outer side of the front end of the output shaft, the brake disc assembly comprises a thick base disc and a thin brake disc, the outer side of the front end of the output shaft is fixedly provided with a thick base disc, the front side of the thick base disc is fixedly provided with at least two thin brake discs arranged at intervals along the front-back direction, the front side of the base corresponding to the position below the thick base disc is provided with the brake shoe assembly, the brake shoe assembly comprises a main frame and a brake plate, the right part of the main frame is rotatably arranged on the front side of the right end of the base through an, the lower part of the main frame is provided with a driving control device which can enable the left part of the main frame to rotate upwards.

2. The ultra-large torque brake device according to claim 1, wherein the thin brake disc is circular, at least two bosses protruding forward are fixed on the front side of the thick base disc along the circumference, each boss is close to the inner side of the thin brake disc positioned at the rearmost position, a base plate connecting hole penetrating through the front and the rear is formed in the center of the front side of each boss, a brake disc connecting hole penetrating through the front and the rear is formed in the front side of the thin brake disc corresponding to each base plate connecting hole, the thick base disc and the thin brake disc are fixedly mounted together through base plate connecting holes and base plate connecting bolts of the brake disc connecting holes at the corresponding positions, and a flat washer fixedly mounted on the outer side of each base plate connecting bolt is arranged between every two adjacent thin brake discs.

3. The ultra-large torque brake device according to claim 1 or 2, wherein the main frame comprises a rear connecting plate and a front connecting plate, the rear side of the thick base disc is provided with the rear connecting plate, the front of the rear connecting plate is provided with the front connecting plate, the rear side of the rear connecting plate is positioned below the front side of the front-most thin brake disc, the right of the front connecting plate is provided with a front through hole which is communicated with the front, the front side of the rear connecting plate corresponding to the position of the front through hole is provided with a rear through hole which is communicated with the front, the rear end of the upper pin shaft sequentially passes through the front through hole and the rear through hole and is rotatably installed on the front side of the base, the front of the rear connecting plate corresponding to the position between every two adjacent thin brake discs is provided with the brake plate, each brake plate is in an inverted T shape, the left and the right of each brake plate are respectively provided with a left communicating hole and a right communicating hole, the front connecting plate and the rear connecting plate corresponding to each right communicating hole are respectively provided with a front right connecting hole and a rear right connecting hole which are communicated with each other from front to back, the front connecting plate and the rear connecting plate are fixedly arranged together through a left fixing bolt with the front end sequentially penetrating through the front left connecting hole, the left communicating hole and the rear left connecting hole and a right fixing bolt with the front end sequentially penetrating through the front right connecting hole, the right communicating hole and the rear right connecting hole, first wave washers fixedly arranged on the outer side of the left fixing bolt are respectively arranged between the front connecting plate and one brake plate positioned at the forefront position, between every two adjacent brake plates and between the rear connecting plate and one brake plate positioned at the rearmost position, second wave washers fixedly installed on the outer side of the right fixing bolt are arranged between the front connecting plate and the brake plate located at the foremost position, between every two adjacent brake plates and between the rear connecting plate and the brake plate located at the rearmost position.

4. The ultra-large torque brake device according to claim 3, wherein the brake shoe assembly further comprises a wedge brake plate, a wedge brake plate is arranged between the brake plate located at the rearmost position and the rear connecting plate, a lower inclined plane with a higher front part and a lower rear part is arranged on the rear side of the upper end of the wedge brake plate, an upper inclined plane matched with the lower inclined plane is arranged on the front side of the outer end of the thick base plate, a right through hole penetrating from front to rear is arranged on the right part of the wedge brake plate corresponding to the rear right connecting hole, the outer side of the rear part of the right fixing bolt is arranged in the right through hole, a left through hole penetrating from front to rear and having a sector ring shape is arranged on the left part of the wedge brake plate corresponding to the rear left connecting hole, the left through hole and the right through hole are coaxially arranged, a third wave washer fixedly arranged on the outer side of the left fixing bolt is arranged on the outer side of the rear fixing bolt, and a third wave washer is arranged between the brake plate, and fourth wave-shaped washers fixedly installed between the outer sides of the right fixing bolts are arranged between the brake plate and the wedge surface brake plate which are positioned at the rearmost position and between the wedge surface brake plate and the front side of the rear connecting plate.

5. The ultra-large torque brake device according to claim 4, wherein the brake shoe assembly further comprises a rear connecting arm and a rear cam push rod, the rear connecting arm is fixed on the lower side of the left portion of the wedge-face brake plate, the rear cam push rod with the front end positioned on the front side is fixedly installed on the lower portion of the rear connecting arm, a driving control device capable of enabling the rear cam push rod to rotate up and down is arranged on the front side of the rear connecting arm, the driving device comprises a cam assembly and a control device, the cam assembly comprises a cam base plate and a rear cam plate, a 7-shaped cam base plate is installed below the rear connecting arm, the upper side of the right portion of the cam base plate is rotatably installed on the front side of the base through a lower pin shaft, the rear cam plate with the upper portion positioned on the front side of the lower portion of the rear connecting arm is fixedly installed on the rear side of the left portion of the cam base plate, a rear adjusting hole is formed in the front side of the rear, the first adjusting hole section is a long-strip-shaped hole which is inclined in a left-low-right-high shape, the second adjusting hole section is a long-strip-shaped hole which is inclined in a left-high-right-low shape, the right end of the first adjusting hole section and the left end of the second adjusting hole section are in smooth transition, the middle of the rear cam push rod is located on the inner side of the right part of the second adjusting hole section, and a control device capable of enabling the lower part of the cam substrate to rotate leftwards is arranged below the rear cam plate.

6. The ultra-large torque brake device according to claim 5, wherein the cam assembly further comprises a front cam plate, a front connecting arm is fixed on the lower side of the left portion of the front connecting plate, a front cam push rod located in front of the rear cam push rod is fixedly installed on the lower portion of the front connecting arm, a front cam plate with an upper portion located on the rear side of the lower portion of the front connecting arm is fixedly installed on the rear side of the left portion of the cam base plate, a front adjusting hole is formed in the front side of the front cam plate and is communicated with the front portion, the front adjusting hole comprises a third adjusting hole section and a fourth adjusting hole section which are communicated with each other from left to right in sequence, the third adjusting hole section is a long strip-shaped hole inclined in a left-low-right-high manner, the fourth adjusting hole section is a long strip-shaped hole inclined in a left-high-right-low manner, the right end of the third adjusting hole section is in smooth transition with the left end of.

7. The ultra-high torque brake device of claim 6, wherein the projections of the fourth adjusting hole section and the second adjusting hole section on the vertical plane are the same, and the lower portion of the first adjusting hole section is located to the left of the lower portion of the third adjusting hole section.

8. The braking device with ultra-large torque as claimed in claim 5, 6 or 7, wherein the operating device comprises a support, a mounting sleeve, a mandrel, a nut sleeve, a lead screw, a pull rod, a crank arm and a rocking handle, the support is fixedly mounted on the left side of the base, the mounting sleeve is rotatably mounted on the upper portion of the support, the mounting sleeve is cylindrical with a left-right central axis, the mandrel is rotatably mounted on the left side and the right side of the mounting sleeve through a bearing, the nut sleeve is fixedly mounted on the outer side of the right side of the mandrel and coaxially mounted with the mandrel, the lead screw is connected with the nut sleeve through a thread, the pull rod is fixedly mounted on the right end of the lead screw and coaxially mounted with the lead screw, the right end of the pull rod is provided with a groove which is through from top to bottom and has a right opening, the lower portion of the cam base plate is located in the groove, the front side of the right end of the, the pull rod and the cam base plate are hinged and installed together through pins installed in the front hinge hole and the rear hinge hole, the left end of the mandrel is fixedly provided with a crank arm of which the lower end is positioned below the mandrel, and the lower part of the crank arm is fixedly provided with a crank handle of which the right end is positioned on the right side and is coaxially arranged with the mandrel.

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