CN112623983B - Loop chain traction and lifting machine of electric direct-drive brake - Google Patents

Abstract

The invention discloses a loop chain traction and hoisting machine of an electric direct drive brake, which comprises a connecting seat, a transmission long shaft, a load chain wheel, a brake nut and a preceding stage driving device arranged in front of the brake nut, wherein the preceding stage driving device consists of at least two stages of planetary reducers and a single motor, and the motor comprises a motor shell, a motor output shaft and a motor output shaft gear; the planetary reducer comprises a reduction box body with an internal gear ring, an input side planet carrier, an output side planet carrier, a carrier gear and a sun gear, wherein the carrier gear and the sun gear are respectively fixed on two sides of the input side planet carrier; the connecting seat, the reduction box body and the motor shell are fixedly connected in sequence. The invention reduces the labor intensity, improves the line erection and hoisting work efficiency, has multiple purposes, and provides an industry key common technology for the existing tighteners, hand-pulling and lever block.

Description

Loop chain traction and lifting machine of electric direct-drive brake

[ technical field ] A method for producing a semiconductor device

The invention relates to a chain traction and lifting machine of an electric direct-drive brake, which relates to improvement of a manual-driven chain traction and lifting device and belongs to the technical field of manual chain traction and lifting.

[ background of the invention ]

Figure 4 shows a prior art chain tightener arrangement comprising a main frame 31 ', a reduction gearbox cover 3 a', a ratchet cover 30 ', a long shaft 6', a brake splined to the long shaft, an manually actuated drive member and a clutch device. The hand-pulling driving component comprises a reversing device and a pulling handle 1 ', the pulling handle is hinged to the outer side of the ratchet wheel cover, the reversing device comprises a reversing ratchet wheel 25 ' with a long shaft connected in a multi-thread manner, a connecting shaft 21 ' and an ejector rod 22 ' of a strip steel ball 221 ' which are separately arranged in the pulling handle, a reversing pawl 23 ' arranged on the connecting shaft and an ejector rod spring 24 ' sleeved on the ejector rod; the brake comprises a brake seat 50 ', a ratchet wheel 52' and two friction plates 51 'which are respectively sleeved on the brake seat in an empty mode, a pair of pawl assemblies are arranged on the periphery of the ratchet wheel, and each pawl assembly mainly comprises a pawl pin 5 a-1', a torsion spring 5a-3 'and a pawl 5 a-2'; the clutch device comprises an adjusting wheel 41 ', a positioning wheel 43 ', a hand wheel 42 ' which is sleeved on the adjusting wheel and the positioning wheel in a hollow way, and a clutch spring 44 ' which is positioned between the reversing ratchet wheel 25 ' and the adjusting wheel.

When the load circular ring chain 91 ' needs to be dragged rapidly in an idle load manner, the reversing pawl 23 ' is ensured to be in a neutral position, the fixed positioning wheel 43 ' is fixed by one hand, then the hand wheel 42 ' is unscrewed by the other hand, so that the elastic pin 421 ' arranged on the hand wheel in the radial direction is clamped in the positioning groove of the positioning wheel, the two wheels are connected into a whole, and the load circular ring chain can be dragged rapidly when a gap is generated by the brake; when a cable needs to be tensioned, the hand wheel 42 ' and the positioning wheel 43 ' are automatically triggered to be dislocated to be disengaged from clamping at the beginning of tensioning, the clutch device immediately compresses the brake, the reversing pawl 23 ' is pulled to a forward gear, the reversing pawl 23 ' is meshed with the reversing ratchet wheel 25 ', the wrench handle 1 ' can be pulled back and forth through manpower at the moment, the reversing pawl enables the reversing ratchet wheel to rotate on the long shaft 6 ', the long shaft 6 ' rotates under friction transmission, the rotation of the long shaft 6 ' enables the shaft end gear to be meshed with a sheet tooth short shaft gear (not shown) located in the main frame 31 ', and the sheet tooth short shaft gear is meshed with a spline hole gear connected with a load chain wheel 9 ' in a spline mode, so that cable tensioning operation is carried out; when the reversing pawl 23 'is switched to a reverse gear, the trigger brake is triggered to release the gap when the wrench handle 1' is just pulled, the wrench handle is continuously pulled, and the cable is intermittently relaxed and intermittently loaded for braking.

Fig. 5 shows a chain block structure of the prior art, which comprises a reduction box B11 ', a left wall plate B1', a right wall plate B2 ', a hoisting ring chain 91', a long shaft 6 ', a hoisting chain wheel 9' which is sleeved on the long shaft and supported on the two wall plates, a brake which is connected on the long shaft in a spline mode, a hand chain wheel 1 'with a plurality of threads connected with the long shaft, and a chain ring chain 11' hung on the hand chain wheel. The brake comprises a brake seat 50 ', a ratchet wheel 52' and two friction plates 51 'which are respectively sleeved on the brake seat in an empty mode, a pair of pawl assemblies are arranged on the periphery of the ratchet wheel 52', and each pawl assembly mainly comprises a pawl pin 5a-1 ', a torsion spring 5 a-3' and a pawl 5a-2 'which are riveted on a right wall plate B2'.

When a heavy object needs to be lifted, the hand-pulling circular ring chain 11 ' is pulled manually to drive the hand chain wheel 1 ' to rotate on the long shaft 6 ' until the hand chain wheel 1 ' is compacted with the two friction plates 51 ', the ratchet wheel 52 ' and the brake 50 ', the ratchet wheel 52 ' rotates under the matching of the pawl 5a-2 ' to drive the long shaft 6 ' to rotate, the motion of the long shaft 6 ' is transmitted to the gear speed reducing mechanism, namely, the shaft end gear of the long shaft is meshed with and drives a sheet tooth short shaft gear (not shown) in the reduction box B11 ', and the sheet tooth short shaft gear is meshed with a spline hole gear (not shown) in spline connection with the lifting chain wheel 9 ', so that the lifting operation is realized.

FIG. 6 shows a conventional chain lever block structure, when it is required to rapidly pull the lifting ring chain 91 ' in an unloaded state, the pulling block 20 ' is pulled to horizontally place the reversing pawl 23 ' in a non-engaged state, so as to rapidly pull the lifting ring chain; when a heavy object needs to be lifted, the pulling block is pulled to a lifting gear to enable the reversing pawl 23 ' to be meshed with the reversing ratchet wheel 25 ', the reversing ratchet wheel 25 ' is compacted with the two friction plates 51 ', the ratchet wheel 52 ' and the brake 50 ' into a whole through stress on a load end of the lifting ring chain 91 ', at the moment, the pulling handle 1 ' can be pulled back and forth through manpower, the long shaft 6 ' rotates under the friction transmission, the rotation motion of the long shaft is transmitted to the gear reduction mechanism, namely, the shaft end gear of the long shaft is meshed with the sheet tooth short shaft gear located in the reduction gear housing B11 ', and the sheet tooth short shaft gear is meshed with the spline hole gear connected with the lifting chain wheel 9 ', so that the lifting operation is realized. The drawings do not show a gear reduction mechanism, the gear reduction mechanism is commonly used in a loop chain tightener and a loop chain block, and the specific application refers to the patent numbers applied by the applicant in 2017, 11 and 21: 2017216502384.

therefore, the three different products need to be driven by manpower, the labor intensity is high, the work efficiency of the line erection traction stringing operation is low, the work efficiency of each tonnage hand-pulling type and hand-pulling type hoisting lifting operation is low, and the function and the use of each product are single.

[ summary of the invention ]

Aiming at the defects of different products in the prior art, the invention aims to provide a chain traction and lifting machine of an electric direct-drive brake.

Therefore, the invention provides the following technical scheme:

the electric direct-drive brake ring chain traction and hoisting machine is provided with a main machine body, wherein the main machine body comprises a main machine frame, a connecting seat, a transmission long shaft, a load chain wheel, a brake and a brake nut which are sequentially arranged on the transmission long shaft, the load chain wheel is sleeved with the transmission long shaft in an empty way, the brake is in splined connection with the transmission long shaft, the brake nut is in transmission threaded connection with the transmission long shaft, and the improvement point is that: the front-stage driving device is arranged in front of the brake nut and consists of at least two stages of planetary reducers and a single motor, and the motor comprises a motor shell, a motor output shaft and a motor output shaft gear; the planetary reducer comprises a reduction box body provided with an inner gear ring, an output side planet carrier, an input side planet carrier, a carrier gear and a sun gear, wherein the carrier gear and the sun gear are respectively fixed on two sides of the input side planet carrier; the main frame, the connecting seat, the reduction box body and the motor shell are fixedly connected in sequence.

The motor output shaft and the output shaft gear are integrated into a single piece.

The sun gear and the input side planet carrier are integrated into a single piece.

The shaft end of the transmission long shaft, which is positioned at the outer side of the brake nut, is also connected with a non-return stop block through a spline, the side wall of the brake nut is fixedly provided with a bulge, the non-return stop block is arranged to enable an installation angle difference to be formed between the non-return stop block and the bulge, and the bulge of the brake nut can be abutted against and stopped after the brake nut is unscrewed by the installation angle difference; the braking clearance is adjusted by changing the installation angle of the backstop stop block on the transmission long shaft.

The invention provides an endless chain traction and hoisting machine with a transmission screw connected with a brake nut of a transmission long shaft and a planet carrier at the output side of a preceding stage driving device in a direct connection mode.

Compared with the prior loop chain tightener, the loop chain lever block and the loop chain hand block, the invention has the following advantages and positive effects:

1. the invention completely subverts three portable small-sized ring chain traction and hoisting machine products of the prior ring chain tightener, the ring chain hand chain hoist and the ring chain hand chain hoist which are manually driven, can fully and effectively lighten the labor intensity after adopting the electric pre-stage direct-drive device, obviously improve the work efficiency of line erection operation and hoisting operation of various tonnages, and realize the functions of multiple purposes and one machine, namely, the electric pre-stage direct-drive device can be used for indoor and outdoor hoisting operation and can also carry out cable tightening operation, The transverse traction is in place before component processing (such as welding operation), fastening operation (including binding and fastening bulk parts) and the like, and an industry key common technology is provided for upgrading and reconstructing the existing chain tightener, the chain hand block and the chain hand block.

In addition, after the planetary reducer is additionally arranged, the technical space with large rotating speed reduction ratio and large transmission torque is provided, and the advantages of saving manpower resources and efficiently operating are reflected.

2. In the front-stage driving device, the output shaft of the motor is simultaneously used as the input shaft of the planetary reducer, and because the output shaft of the motor and the input shaft of the planetary reducer are coaxial, the electric front-stage driving device not only has compact overall transverse size, but also has short driving chain and high direct-drive efficiency; because the carrier gear and the planet gear are meshed with the same inner gear ring together, the precision is high.

3. Between the preceding stage driving device and the brake nut, the planet carrier on the output side is used for supporting and assembling the planet wheel and is rigidly meshed with the brake nut through the end teeth, and the planet carrier on the output side has the double functions of secondary driving output and transmission input and is simple in structure.

Because the output shaft gear and the output shaft of the motor are arranged into a single integrated part, the characteristic of no assembly error is embodied, the matching precision is improved to a certain degree compared with the connection of the output shaft of the motor and the output shaft gear shaft through a key, and the meshing precision of the carrier gear and the output shaft gear shaft can also be improved.

Because the sun gear and the planet carrier at the input side are single integral parts, the meshing precision of the sun gear and the planet gear is improved.

After the braking nut is additionally provided with the bulge and the retaining stop block is additionally arranged at the shaft end of the transmission long shaft, the braking is reliable, the braking gap is adjustable, and after a friction plate of the brake is ground to be thin, the braking gap can be adjusted by adjusting the installation angle of the retaining stop block.

[ description of the drawings ]

FIG. 1 is a schematic structural diagram of a chain traction and hoisting machine of the electric direct drive brake of the present invention;

FIG. 2 is an exploded view of the output side carrier, the stop nut, the backstop stop and the long shaft;

FIG. 3 is a schematic view of the engagement between the backstop stop and the projection of the stop nut;

FIG. 4 is a schematic view of a prior art link chain tightener;

FIG. 5 is a front view of a chain block of the prior art;

fig. 6 is a front view of a conventional chain hoist.

[ detailed description ] embodiments

Referring to fig. 1, 2 and 3, the endless chain traction and hoisting machine of the electric direct drive brake comprises a main machine body 3, wherein the main machine body comprises a main machine frame 31, a connecting seat 30, a transmission long shaft 6, a load chain wheel 9, a brake 5 and a brake nut 4 which are sequentially arranged on the transmission long shaft 6, the load chain wheel 9 is sleeved on the transmission long shaft 6 in an empty way, the brake 5 is in splined connection with the transmission long shaft 6, the brake nut 4 is in transmission threaded connection with the transmission long shaft 6, and the improvement point is that: the front-stage driving device is arranged in front of the brake nut 4 and consists of an at least two-stage planetary reducer 2 and a single motor 1, wherein the motor 1 comprises a motor shell 10, a motor output shaft 11 and an output shaft gear 12; the planetary reducer 2 comprises a reduction box body 20 provided with an inner gear ring 201, an output side planet carrier 22, an input side planet carrier 21, a carrier gear 211 and a sun gear 212 which are respectively fixed on two sides of the input side planet carrier 21, wherein a planet gear 221 is fixed on one side of the output side planet carrier 22, the other side of the output side planet carrier is rigidly engaged with the brake nut 4 through an end gear, the carrier gear 211 is engaged with the output shaft gear 12 and the inner gear ring 201, and the planet gear 221 is engaged with the sun gear 212 and the inner gear ring 201; the main frame 31, the connecting seat 30, the reduction box body 20 and the motor shell 10 are sequentially and fixedly connected.

The brake 5 adopts a friction transmission brake (or a load self-braking brake) with a known structure, such as the friction transmission brake in terms of cable tensioning operation or hoisting, and the load self-braking brake in terms of cable loosening or hoisting descending and hoisting stopping; the brake 5 comprises a brake seat 50, a ratchet wheel 52 sleeved on the brake seat, and two friction plates 51 sleeved on the brake seat and positioned at two sides of the ratchet wheel, wherein the brake seat 50 is in spline connection with the transmission long shaft 6, and the patent numbers applied by the applicant on 5/27/2018 are specifically referred to: 2018208165932.

a pawl assembly 5a is mounted on the main frame 31 and the connecting seat 30, and is of a known structure and consists of a pawl pin, a steel sleeve, a torsion spring and a pawl.

As can be seen from the figure, a spline hole gear 8, two sets of structure and sheet tooth stub shaft gear assemblies 7 with the same specification of the existing structure are arranged on the right side of the load chain wheel 9, wherein the spline hole gear is connected to the right end of the load chain wheel 9 in a spline mode, the load chain wheel is meshed with the load ring chain 91, each sheet tooth stub shaft gear assembly 7 mainly comprises a stub shaft gear in an integrated structure and a sheet gear pressed on the stub shaft gear, and two shaft ends of each stub shaft gear are respectively supported on the inner side walls of the main frame and the gear cover. The long shaft gear part 6R of the transmission long shaft 6 is meshed with two sheet gears, and the gear parts of the two short shaft gears are jointly meshed with a spline hole gear.

The number of the carrier gears 211 is three, and the number of the planet gears 221 is three.

In the present embodiment, the planetary reducer 2 is a two-stage planetary reducer; on its other side, the output-side carrier 22 has axially extending circumferentially distributed end teeth 222, and on the side of the brake nut also axially extends circumferentially distributed end teeth 42, the end teeth 222 being in engagement with the end teeth 42, as shown in fig. 2 and 3, the end teeth 222 are in the form of tiles for a total of six end teeth, and correspondingly, the end teeth 42 are also in the form of tiles with six mating end teeth.

The motor output shaft 11 and the output shaft gear 12 are integrated into a single piece; the sun gear 212 is integral and one-piece with the input-side carrier 21; the motor 1 is a two-phase motor or a three-phase motor or a direct-current brushless motor, and the direct-current brushless motor is powered by a lithium battery, so that the power supply system can adapt to different working conditions, such as the requirements of indoor and field operation, due to the fact that the power supply forms of the motor are various.

The shaft end of the transmission long shaft 6 is further in splined connection with a backstop stop block 6L, the backstop stop block 6L is located on the outer side of the brake nut 4, a protrusion 41 is fixedly arranged on the side wall of the brake nut 4, the backstop stop block 6L is installed to enable an installation angle difference to exist between the backstop stop block and the protrusion 41, and the protrusion 41 of the backstop stop block 6L can abut against and stop the backstop stop block 6L after the brake nut 4 rotates backwards by the installation angle difference; the braking clearance of the brake 5 is adjusted by changing the installation angle of the backstop block 6L on the transmission long shaft 6.

The mounting angle difference is controlled between 40 degrees and 55 degrees. Referring to fig. 1, the braking nut 2 and the brake 1 are in a gapless braking state, and at this time, a 45 ° installation angle difference is formed between the backstop 4 and the protrusion 21 (as shown in fig. 3); when the brake is released, the backstop stop block 4 is abutted to the bulge 21, and a brake gap (0.5-1 mm) is formed between the brake nut 2 and the brake 1.

Claims (2)

1. The utility model provides an electronic chain that directly drives stopper pulls, lifting machine, has the host computer body, and the host computer body includes main frame, connecting seat, transmission major axis, adorns load sprocket, stopper and the brake nut on the transmission major axis in proper order, and wherein, load sprocket free sleeve transmission major axis, stopper and transmission major axis spline coupling, brake nut and transmission major axis transmission threaded connection, its characterized in that: also comprises a front-stage driving device which is arranged in front of the brake nut and consists of a planetary reducer with at least two stages and a single motor,

the motor comprises a motor shell, a motor output shaft and an output shaft gear, and the motor output shaft and the output shaft gear are integrated into a single piece;

the planetary reducer comprises a reduction box body provided with a single inner gear ring, an output side planet carrier, an input side planet carrier, a carrier gear and a sun gear, wherein the carrier gear and the sun gear are respectively fixed on two sides of the input side planet carrier;

the sun wheel and the input planet carrier side are integrated into a single piece;

the main frame, the connecting seat, the reduction box body and the motor shell are fixedly connected in sequence.

2. The electric direct drive brake endless chain traction and hoisting machine as claimed in claim 1, wherein: the transmission long shaft is also connected with a backstop stop block through a spline at the shaft end positioned on the outer side of the brake nut, the side wall of the brake nut is fixedly provided with a bulge, the backstop stop block is arranged to enable an installation angle difference to be formed between the backstop stop block and the bulge, and the bulge of the brake nut can be abutted against and stopped after the brake nut is unscrewed by the installation angle difference; the braking clearance is adjusted by changing the installation angle of the backstop stop block on the transmission long shaft.

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