CN219951931U - Sprocket drive unit and milling flutes mixer - Google Patents

Abstract

A chain wheel driving unit and a milling groove mixer comprise a lifting frame, an electric drive and reduction unit comprising a driving motor and a planetary reducer, a motor cooling unit comprising a pinion, an idler wheel shaft, a large gear, an output main shaft, a gear speed changing unit for driving a chain wheel part, a water pump, a radiator and an electric control unit; the electric drive and speed reduction unit is symmetrically arranged at the upper part of the upper cavity; the small gear, the idler gear and the large gear of the gear speed changing unit are meshed with each other, the output main shaft is installed in a mode of penetrating through the upper cavity, and the extending end of the output main shaft is fixedly provided with a driving chain wheel part; the motor cooling unit controls the heat dissipating capacity by regulating and controlling the rotating speed of the heat dissipating fan, so that the water circulation cooling of the motor is effectively realized; the utility model adopts a permanent magnet motor direct drive mode to provide driving force for the chain wheel mechanism, has the characteristics of high transmission efficiency, large overload capacity, low energy loss and the like, and ensures the stable operation of the driving motor and improves the construction efficiency of the continuous wall by pumping circulating cooling liquid through the motor cooling unit.

Description

Sprocket drive unit and milling flutes mixer

Technical Field

The utility model belongs to the technical field of underground foundation construction, and particularly relates to a chain wheel driving unit and a milling groove stirrer.

Background

At present, in the construction of retaining walls of underground buildings, foundation pit enclosures of subway stations, urban underground comprehensive pipe galleries and refuse landfill, sealing partition of pollution sources and improvement of soft soil foundations, the construction technology of the equal-thickness cement soil stirring wall is characterized in that a chain saw type cutting box is driven by a hydraulic motor of a power box, the cutting box is connected in sections, horizontal transverse cutting and pushing are carried out by a digging chain after the cutting box is drilled to a preset depth, and in the pushing process, air is added, solidification liquid is injected, and the mixture is forcedly mixed and stirred with in-situ soil to form the equal-thickness cement soil stirring wall.

The prior art milling groove stirrer adopts a hydraulic drive chain wheel mechanism, the power transmission path is relatively complex, and hydraulic elements/systems comprising a hydraulic pump, hydraulic oil, a hydraulic motor, a hydraulic pipeline, a hydraulic motor, a control valve group, a hydraulic pump station and the like are required to be configured; meanwhile, the hydraulic driving mode has high requirements on the machining precision and quality of parts, the pipeline arrangement and the fixing have certain influence, and the hydraulic driving mode brings a plurality of inconveniences to the maintenance of equipment and increases the manufacturing cost of the equipment. Therefore, there is a need for an improved power supply version of a drive sprocket unit that is easy to install, disassemble, maintain, and reduce manufacturing costs.

Disclosure of Invention

The utility model mainly aims to overcome the defects in the prior art and provide a chain wheel driving unit and a milling groove stirrer, wherein a permanent magnet motor direct drive mode is adopted to provide driving force for a chain wheel mechanism, and the chain wheel driving unit has the characteristics of high transmission efficiency, large overload capacity, low energy loss and the like; the motor cooling unit of the driving sprocket unit pumps circulating cooling liquid, the temperature sensor instantly detects the temperature of the motor, continuous and stable operation of the driving motor is guaranteed, and construction efficiency of the underground diaphragm wall is improved.

The utility model is realized by the following technical scheme:

a chain wheel driving unit is characterized by comprising a lifting frame, two groups of electric drive and speed reduction units, a gear speed change unit and a motor cooling unit,

the lifting frame is a welding component with an upper cavity and a lower frame body, and is arranged on an external mast guide rail through a back guide plate; the upper end face of the lower frame body is provided with a chain wheel part support, and the lower end face of the lower frame body is fixedly provided with a plurality of sections of external cutting boxes; the lifting frame moves up and down on the mast guide rail through an external jacking mechanism;

the electric drive and speed reduction unit is symmetrically arranged at the upper part of the upper cavity of the lifting frame, and comprises a first driving motor containing a cooling water cavity, a first planetary speed reducer, a second driving motor containing a cooling water cavity and a second planetary speed reducer, wherein the cooling water cavity is provided with a water inlet hole and a water outlet hole; the first driving motor and the second driving motor are respectively fixedly arranged at the input ends of the first planetary reducer and the second planetary reducer, and the first planetary reducer and the second planetary reducer are respectively fixedly arranged at the upper part of the upper cavity of the lifting frame, and the output ends of the first planetary reducer and the second planetary reducer respectively enter the upper cavity; the electric drive and speed reduction unit converts electric energy into mechanical work and amplifies output torque;

the gear speed changing unit comprises two pinions, two idler wheels, two idler wheel shafts, a large gear, an output main shaft and a driving chain wheel part; the pinion gears are fixedly arranged at the output ends of the first planetary reducer and the second planetary reducer respectively; the idler wheel is symmetrically and fixedly arranged in the middle of the upper cavity through an idler wheel shaft and is respectively meshed with the pinion and the large gear; the output main shaft is arranged in a way of penetrating through the upper cavity of the lifting frame, and the outer circle of the output main shaft is respectively supported and arranged on the lower mounting hole of the upper cavity and the chain wheel part support of the lower frame; the large gear is fixedly arranged on the front part of the main shaft of the output main shaft; the driving chain wheel part is fixedly arranged in the middle of the rear part of the main shaft of the output main shaft, and the driving chain wheel part, the external driven chain wheel and the side surface of each section of external cutting box are fixedly provided with an external rail chain with a digging cutter; the gear speed changing unit further amplifies output torque, and the driving chain wheel rotates to realize reciprocating motion of an external rail chain, so that an external digging cutter digs and stirs soil;

the motor cooling unit comprises a water pump, a radiator, a first temperature sensor, a second temperature sensor and an electric control unit, wherein the water pump is connected with water outlets of cooling water cavities of the first driving motor and the second driving motor, and the radiator is connected with water inlets of the cooling water cavities of the first driving motor and the second driving motor; the electric control unit controls the water pump to start and then takes away heat produced by the operation of the two driving motors through circulating cooling liquid; the first temperature sensor and the second temperature sensor are respectively arranged at the water inlet hole and the water outlet hole of the first driving motor and the second driving motor, monitor the working temperature of the first driving motor and the second driving motor and transmit the working temperature to the control panel for display; the first temperature sensor and the second temperature sensor are respectively arranged at the water inlet and the water outlet of the first driving motor and the second driving motor, monitor the working temperature of the first driving motor and the second driving motor and transmit the working temperature to the control panel; the electric control unit controls the radiator to adjust the heat dissipation capacity required by the high-temperature liquid flowing into the radiator, and the heat dissipation and cooling of the running temperatures of the first driving motor and the second driving motor under different loads are met.

A milling groove mixer comprises the driving sprocket unit.

Compared with the prior art, the utility model has the following beneficial effects:

1) The electric drive and speed reduction unit adopts a permanent magnet synchronous motor to replace a hydraulic motor to provide cutting driving force, the power transmission path is simple, the overload capacity is larger, the power transmission efficiency is effectively improved, the energy loss is reduced by more than 50%, the milling mixer is ensured to have stronger cutting performance, and the electric drive and speed reduction unit is suitable for complex stratum digging conditions;

2) The motor cooling unit takes away heat generated by the operation of the driving motors through circulating flowing cooling liquid, and controls the rotation speed of a cooling fan of the radiator through the electric control unit to realize the control of the heat dissipation capacity of high-temperature liquid entering the heat dissipation water tank, so that the heat dissipation and the cooling of the operation temperatures of the two driving motors under different loads are met; the temperature sensor detects the running temperature of the driving motor in real time and transmits the running temperature to the control panel, so that an operator can take corresponding measures to solve the problem;

3) The motor cooling unit adopts water and glycol mixed liquid as motor water circulation cooling liquid, so that the cooling effect of the motor cooling unit is further improved, the requirement of continuous operation of the motor is met, and particularly, the milling groove stirrer keeps good stable working performance in a large-load cutting state.

Drawings

FIG. 1 is a schematic view of the structure of a sprocket drive unit of the present utility model;

FIG. 2 is a schematic view of the assembled structure of the lifting frame, the electric drive and reduction unit and the gear shifting unit;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a left side view of FIG. 2;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 6 is a schematic diagram of a motor cooling unit according to the present utility model;

the main shaft comprises a 10-lifting frame, a 101-upper cavity, 1011-first mounting seat, 1012-second mounting seat, 1013-third mounting seat, 1014-fourth mounting seat, 1015-fifth mounting seat, 1016-front vertical plate, 1017-rear vertical plate, 1018-large cover plate, 1019-small cover plate, 102-lower frame body, 103-back guide plate, 104-sprocket part support, 20-electric drive and speed reduction unit, 201-first planetary reducer, 202-second planetary reducer, 2012-raised step, M1-first driving motor, M2-second driving motor, 205-bracket, 401-water pump, 402-radiator, 4021-radiator fan, 4022-water tank, 4023-third sensor, 4023 '-fourth sensor, 403-cooling pipeline, 404-first sensor, 404' -second sensor, 405-electric control unit, 406-cooling water cavity, 4061-water inlet, 4062-water outlet hole, 30-gear speed change unit, 302-idler gear, 301-3053-idler gear, 3053-main shaft, 3052-main shaft, 3053-main shaft, and main shaft.

Detailed Description

The sprocket drive unit and the slot machine according to the present utility model will be further described with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

The embodiment discloses a sprocket driving unit, which comprises four parts, namely a lifting frame 10, two groups of electric driving and decelerating units 20, a gear speed changing unit 30 and a motor cooling unit.

Referring to fig. 1-5, the lifting frame 10 is a welding member having an upper cavity 101 and a lower frame 102, wherein the upper cavity 101 is provided with two first mounting seats 1011, two third mounting seats 1013, two second mounting seats 1012, two fourth mounting seats 1014, and a fifth mounting seat 1015 respectively located on the front riser 1016 and located on the rear riser 1017 from top to bottom; the back guide plates 103 of the lifting frame are provided with a plurality of groups from top to bottom in a paired manner, and can move up and down on the external mast guide rail by operating an external jacking mechanism fixedly arranged with the back guide plates; the lower frame 102 and the bottom of the upper cavity 101 are vertically welded to form a lifting frame 10, and a chain wheel part support 104 is fixedly arranged at the end part of the upper end surface of the lower frame 102 through screws; according to the designed depth of the underground diaphragm wall, a plurality of external cutting boxes are fixedly arranged on the lower end face of the lower frame body 102 so as to reach the designed depth of the underground diaphragm wall.

Referring to fig. 1-5, the left electric driving and speed reducing unit 20 and the right electric driving and speed reducing unit 20 'are symmetrically arranged at the upper part of the upper cavity 101 of the lifting frame 10, the left electric driving and speed reducing unit 20 comprises a first driving motor M1 with a cooling water cavity 406 and a first planetary speed reducer 201, the right electric driving and speed reducing unit 20' comprises a second driving motor M2 with a cooling water cavity 406 and a second planetary speed reducer 202, and the first driving motor M1 and the second driving motor M2 are both permanent magnet synchronous motors, so that the running reliability, the working efficiency and the power density of the driving motors are improved; the first planetary reducer 201 and the second planetary reducer 202 are respectively placed in the through holes of the second mounting seat 1012 entering the upper cavity 101 through the raised steps 2012 at the end parts of the outer shells of the first planetary reducer and the second planetary reducer, and the outer shells of the first planetary reducer and the second planetary reducer are fixedly mounted on the upper cavity 101 through screws after the output shafts of the first planetary reducer and the second planetary reducer respectively enter the upper cavity 101; the output shafts of the first driving motor M1 and the second driving motor M2 are respectively fixed at the input ends of the first planetary reducer 201 and the second planetary reducer 202, and are fixed at the bracket 205 by means of the cooling water cavities 406 thereof, so as to ensure the stable operation of the two groups of electric driving and speed reducing units 20, 20'; the electric drive and speed reduction unit 20 converts electric energy of the power grid into mechanical work and amplifies output torque.

Referring to fig. 1 to 5, the gear shifting unit 30 includes two pinion gears 301, two idler gears 302, two idler shafts 303, a large gear 304, an output main shaft 305, and a driving sprocket portion 306; the pinion 301 is respectively fixed on the output ends of the first planetary reducer 201 and the second planetary reducer 202, one end shaft shoulder of the pinion is provided with a rolling bearing and then is supported in a through hole of a first mounting seat 1011 of the upper cavity 101 of the lifting frame 10, and a small cover plate 1019 is fixedly arranged at the outer end part of the first mounting seat; the idler 302 is fixedly mounted on the idler shaft 303 through a through hole in the center thereof, and two ends of the idler shaft 303 are respectively arranged in through holes of a third mounting seat 1013 and a fourth mounting seat 1014 of the upper cavity 101; the output spindle 305 is installed in a manner of penetrating through the upper cavity 101, and the front part 3051 of the spindle is supported in a through hole of a fifth installation seat 1015 of the upper cavity 101 after being provided with a rolling bearing; the large gear 304 is fixedly arranged at the front end part of the front part 3051 of the main shaft in a spline connection mode, and the large cover plate 1018 is packaged at the lower part of the front vertical plate 1016 of the upper cavity 101; the rear part 3052 of the main shaft 305 is provided with a rolling bearing and then is supported and installed in a through hole of a chain wheel part support 104 of the lower structure 102, and the outer end part of the main shaft is encapsulated by an outer cover 3053, so that the rotation operation of a moving part is ensured; when the driving sprocket part 306 is fixedly arranged on the outer circle of the output main shaft 305, the sprocket hub 3061 is fixedly arranged in the middle of the outer circle of the rear part 3052 of the main shaft in a spline connection mode, the driving sprocket 3062 is fixedly arranged on the outer circle of the sprocket hub 3061 through screws, and in order to facilitate the installation of the driving sprocket, the driving sprocket is split into two semi-circular shapes, and is welded into a whole after being installed with the sprocket hub 3061, so that the running stability of the driving sprocket part 306 is ensured; the gear speed changing unit 30 is driven by a secondary speed reduction transmission of the engagement of the pinion 301 and the idler 302 and the engagement of the idler 302 and the large gear 304 in the upper cavity 101, so that the rotation speed of the driving chain wheel part 306 is greatly reduced, the output torque is greatly amplified, the driving chain wheel part 306, external cutting boxes and external rail chains of the digging and cutting tools are ensured to be fixedly arranged behind driven chain wheels, the driving chain wheel part 306 drives the external rail chains to move up and down after rotating, soil is dug and stirred, and the soil is transversely cut when the soil is transversely moved and fed along with a milling groove stirrer.

Referring to fig. 6, the motor cooling unit includes a water pump 401, a radiator 402, a first temperature sensor 404, a second temperature sensor 404', and an electronic control unit 405, wherein the radiator 402 is assembled by a radiator fan 4021 and a radiator water tank 4022; the water suction port of the water pump 401 is fixedly provided with a cooling pipeline 403 which is divided into two paths and is respectively connected with water outlets 4062 of cooling water cavities 406 of the first driving motor M1 and the second driving motor M2; the water outlet of the water pump 401 is fixedly provided with a cooling pipeline 403 and then is connected with the water inlet of a radiating water tank 4022 of the radiator 402; a cooling pipeline 403 is fixedly arranged at the water outlet of the radiating water tank 4022, and the cooling pipeline is divided into two paths and is respectively connected with water inlets 4061 of the cooling water cavities 406 of the first driving motor M1 and the second driving motor M2; the electronic control unit 405 controls the water pump 401 to start, pumps high-temperature liquid from the cooling water cavities 406 of the first driving motor M1 and the second driving motor M2, and pumps the high-temperature liquid to the radiating water tank 4022 of the radiator 402; the electronic control unit 405 controls the cooling fan 4021 of the radiator 402 to rotate so as to cool the high-temperature liquid entering the water tank 4022, and the cooling liquid subjected to heat dissipation and cooling enters the cooling water cavities 406 of the first driving motor M1 and the second driving motor M2 respectively through the cooling pipeline 403, so that the circulating cooling liquid takes away the heat generated by the operation of the two driving motors, and the continuous and stable operation of the driving motors is ensured; the cooling liquid is formed by mixing 50% of water and 50% of ethylene glycol, so that the heat dissipation effect of the driving motor is effectively improved, and particularly, the milling groove stirrer keeps good stable working performance in a large-load cutting state;

the first temperature sensor 404 and the second temperature sensor 404' are respectively disposed at the water inlet 4061 and the water outlet 4062 of the first driving motor M1 and the second driving motor M2, and monitor the working temperatures of the two driving motors in real time and transmit the working temperatures to the display panel of the electronic control unit 405 for display; the temperatures of the cooling liquid at the water inlet holes 4061 of the first driving motor M1 and the second driving motor M2 are respectively set to be less than or equal to 65 ℃, the alarm temperatures and the shutdown protection temperatures of the two driving motors are respectively set to be 155 ℃ and 160 ℃, and the temperatures are respectively transmitted to the display panel of the electronic control unit 405 for display or alarm through the first temperature sensor 404 and the second temperature sensor 404';

the third temperature sensor 4023 and the fourth temperature sensor 4023' are respectively arranged at the water outlet port and the water inlet port of the radiating water tank 4022 of the radiator 402, and the temperature of the internal cooling liquid of the radiating water tank 4022 is monitored in real time and transmitted to the display panel of the electronic control unit 405 for display; the electronic control unit 405 presets the rotation speed of the heat dissipation fan 4021 according to 1-5 level speed regulation, and adjusts the best heat dissipation effect of the high-temperature liquid entering the heat dissipation water tank 4022 under the condition of different loads of the two driving motors by automatically adjusting the air quantity of the heat dissipation fan 4021; the temperature of the water outlet end of the radiating water tank 4022 of the radiator 402 is set to be 45-50 ℃, and the temperature is immediately detected by a third temperature sensor 4023 and then transmitted to a display panel of the electronic control unit 405 for display; when the third temperature sensor 4023 detects that the temperature of the water outlet of the radiating water tank 4022 is 45 ℃, the radiating fan 4021 starts to work, and the initial rotating speed of the radiating fan is 30% of the highest rotating speed; when the third temperature sensor 4023 detects that the temperature of the water outlet of the radiating water tank 4022 is 50 ℃, the radiating fan 4021 runs at the highest rotating speed and full speed; when the third temperature sensor 4023 detects that the temperature of the water outlet of the radiating water tank 4022 is lower than 43 ℃, the radiating fan 4021 stops running; when the fourth temperature sensor 4023' monitors that the temperature of the water inlet port of the radiating water tank 4022 is 65 ℃, the radiating fan 4021 runs at the highest rotating speed and at full speed, so that the radiating and cooling of the maximum air quantity are realized; when the transmission signals of the third temperature sensor 4023 and the fourth temperature sensor 4023' are lost, the cooling fan 4021 runs at the highest speed, so that the normal operation of the radiator 402 is ensured, the driving motor is effectively cooled in time, and the damage caused by overheat of the driving motor is avoided.

The utility model also relates to a milling groove stirrer, which comprises the chain wheel driving unit.

The utility model provides driving force for the chain wheel transmission mechanism by adopting a direct driving mode of the permanent magnet synchronous motor, and has the characteristics of high transmission efficiency, large overload capacity, low energy loss and the like; the water pump of motor cooling unit sends to the radiator cooling from driving motor's cooling water intracavity suction high temperature liquid, and the coolant liquid reentrant driving motor's cooling chamber, and circulating flow's coolant liquid takes away driving motor operation heat that the intensification produced, carries out effective cooling heat dissipation to driving motor, and temperature sensor detects driving motor's operating temperature in real time and transmits to control panel, and the operating personnel of being convenient for takes corresponding measure, further guarantees driving motor's continuous steady operation, effectively improves milling flutes mixer's efficiency of construction.

Various changes and modifications may be made to the utility model without departing from the general inventive concept, and, if the same or equivalent thereto is made, the utility model is also within the scope of the utility model.

Claims (2)

1. A chain wheel driving unit, which is characterized by comprising a lifting frame (10), two groups of electric driving and decelerating units (20, 20'), a gear speed changing unit (30) and a motor cooling unit,

the lifting frame (10) is a welding component with an upper cavity (101) and a lower frame body (102), and is arranged on an external mast guide rail through a back guide plate (103); the upper end face of the lower frame body (102) is provided with a chain wheel part support (104), and the lower end face of the lower frame body is fixedly provided with a plurality of sections of external cutting boxes; the lifting frame (10) moves up and down on the mast guide rail through an external jacking mechanism;

the electric drive and speed reduction units (20, 20') are symmetrically arranged at the upper part of the upper cavity (101) of the lifting frame (10) left and right, and respectively comprise a first driving motor (M1) with a cooling water cavity (406), a first planetary speed reducer (201), a second driving motor (M2) with the cooling water cavity (406) and a second planetary speed reducer (202), wherein the cooling water cavity is provided with a water inlet hole (4061) and a water outlet hole (4062); the first driving motor (M1) and the second driving motor (M2) are respectively fixedly arranged at the input ends of the first planetary reducer (201) and the second planetary reducer (202), and the first planetary reducer (201) and the second planetary reducer (202) are fixedly arranged at the upper part of the upper cavity (101) of the lifting frame (10) and respectively enter the upper cavity (101) at the output ends thereof; the electric drive and speed reduction unit (20) converts electric energy into mechanical work and amplifies output torque;

the gear speed changing unit (30) comprises two pinions (301), two idler wheels (302), two idler shafts (303), a large gear (304), an output main shaft (305) and a driving sprocket wheel part (306); the pinion (301) is fixedly arranged on the output ends of the first planetary reducer (201) and the second planetary reducer (202) respectively; the idler wheel (302) is symmetrically fixed in the middle of the upper cavity (101) through an idler wheel shaft (303) and is meshed with the pinion (301) and the large gear (304) respectively; the output main shaft (305) is installed in a way of penetrating through the upper cavity (101) of the lifting frame (10), and the outer circle of the output main shaft is respectively supported and installed on the lower part of the upper cavity (101) and the sprocket wheel part support (104) of the lower frame body (102); the large gear (304) is fixedly arranged on the front part (3051) of the main shaft of the output main shaft (305); the driving chain wheel part (306) is fixedly arranged in the middle of the rear part (3052) of the main shaft of the output main shaft (305), and the driving chain wheel part, an external driven chain wheel of the milling groove mixer and the side surface of each section of external cutting box are fixedly provided with an external rail chain with a digging cutter; the gear speed changing unit (30) further amplifies output torque, and the external rail chain reciprocates through the rotation of the driving chain wheel, so that soil is excavated and stirred by the external excavating tool;

the motor cooling unit comprises a water pump (401), a radiator (402), a first temperature sensor (404), a second temperature sensor (404') and an electric control unit (405), wherein the water pump (401) is connected with water outlet holes (4062) of cooling water cavities (406) of a first driving motor (M1) and a second driving motor (M2), and the radiator (402) is connected with water inlet holes (4061) of the cooling water cavities (406) of the first driving motor (M1) and the second driving motor (M2); the electric control unit (405) controls the water pump (401) to take away heat generated by the operation of the two driving motors through circulating flowing cooling liquid after being started; the first temperature sensor (404) and the second temperature sensor (404') are respectively arranged at the water inlet hole (4061) and the water outlet hole (4062) of the first driving motor (M1) and the second driving motor (M2), and the working temperature is monitored and transmitted to the electric control unit (405); the electric control unit (405) controls the water pump radiator (402) to adjust the heat dissipation capacity required by the high-temperature liquid flowing into the radiator (402), so that the heat dissipation and the temperature reduction of the running temperatures of the first driving motor (M1) and the second driving motor (M2) under different loads are met.

2. A slot milling machine comprising a sprocket drive unit according to claim 1.