CN218625330U - Two-gear fixed-shaft gearbox for electric drive soil shoveling and transporting machinery - Google Patents

Abstract

The utility model discloses an electricity drives shovel soil transport machinery with two steps dead axle gearboxes belongs to gearbox transmission technical field, include the gearbox body and the TCU controller of fixed mounting on the protecgulum that constitute by protecgulum casing and back lid casing, the back lid embeds there is the hydro-cylinder of usefulness of shifting, the inside of built-in hydro-cylinder is provided with can be promoted by hydraulic oil and is reciprocating motion's piston, the piston is connected with the piston rod interference, one side rigid connection of piston rod has the shift fork of shifting, the below of shift fork is equipped with synchronous motion's the sliding sleeve of shifting, the inside of gearbox body is provided with the feedback axle of accepting the stroke signal of shifting and the position sensor with feedback axle signal connection. The gearbox has a compact structure, the gear shifting oil cylinder is internally arranged, and the oil way and the shell are integrally designed, so that the complicated and severe use working conditions of the soil shoveling and transporting machine can be effectively met.

Description

Two-gear fixed-shaft gearbox for electric drive soil shoveling and transporting machinery

Technical Field

The utility model relates to a gearbox transmission technical field specifically is an electricity drives shovel soil transport machinery and keeps off countershaft gearbox with two.

Background

With the release and planning of the national double-carbon strategy plan, the electrically-driven products of various industries are developed vigorously, and in order to respond to the national call, the engineering machinery industry has large product emission and serious pollution, the energy conservation and emission reduction of the industry are imperative. The shoveling and transporting machinery is widely applied to occasions needing shoveling, loading, transporting, unloading and the like of materials such as roads, railways, capital constructions, water conservancy, ports, coals and the like. By taking the loader as an example, the equipment has a small working range, relatively fixed places and single working condition relative standard, so that the electrically-driven shovel soil transport machinery is taken as a first batch of electrically-driven products and is produced at the same time.

Chinese patent (patent No. CN 113847396A) discloses a pure electric loader transmission, which is characterized in that a shifting fork drives a sliding sleeve to move rightwards through an external power source when a first gear is engaged, power is transmitted to a middle shaft gear by a first gear of an input shaft firstly and then transmitted to an output shaft by a middle shaft output gear, and then is output by a flange plate. In the prior art, gear shifting is performed through gas pressure, a gear shifting executing mechanism is arranged externally, and the gear shifting position is not accurate due to the fact that gas is compressible. In addition, the prior art still has the high scheduling problem of electron oil pump trouble.

Accordingly, in response to the above-noted problems, a two-speed fixed-axis transmission for an electrically driven earth-moving machine is now provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electricity drive shovel soil transport machinery is with two constant axis gearboxes that keep off, this electron hydraulic pressure is shifted, and shift system is simple reliable effect such as fault rate low to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

two keep off dead axle gearboxes for electric drive shovel soil transportation machinery includes the gearbox body and the TCU controller of fixed mounting on the protecgulum that constitute by protecgulum casing and hou gai casing, the built-in hydro-cylinder that has the usefulness of shifting of back lid, the inside of built-in hydro-cylinder is provided with can be promoted by hydraulic oil and is reciprocating motion's piston, the piston is connected with piston rod interference, one side rigid connection of piston rod has the shift fork of shifting, the below of shift fork is equipped with synchronous motion's sliding sleeve of shifting, the inside of gearbox body is provided with the feedback axle of accepting the stroke signal of shifting and with feedback axle signal connection's position sensor, passes back the signal of accepting to the controller through feedback axle and position sensor, the controller is electric connection with electromagnetic directional valve, driving motor, the middle part of gearbox body is provided with the tachometer mechanism of the position gear rotational speed of feedback, through TCU controller control solenoid valve circular telegram continues to enter into built-in the hydraulic oil cylinder, drives the sliding sleeve of shifting and is close to the target gear. The electronic hydraulic operation is adopted for gear shifting, hydraulic oil has the characteristics of quick response, accurate position, incompressibility and the like, and the actuating mechanism can be better matched with a control system of a whole vehicle; the shifting fork position feedback system is simple and reliable, and has low failure rate.

As a further aspect of the present invention: the oil seal type transmission is characterized in that the electromagnetic reversing valve, a valve seat, an input shaft, an intermediate shaft and an output shaft are sequentially arranged on the transmission body from top to bottom, one end of the input shaft is connected with an external power unit through a spline, and the other end of the input shaft is sequentially provided with an oil seal seat, a bearing, an input shaft first gear, an input shaft second gear, an oil distribution ring and a gear oil pump.

As a further aspect of the present invention: the gear shifting sliding sleeve is connected with one end of the input shaft, and the power of the external power unit is transmitted to the gear shifting sliding sleeve and the input shaft secondary gear through the input shaft.

As a further aspect of the present invention: the lower part of the input shaft secondary gear is meshed with an intermediate shaft secondary gear, the intermediate shaft secondary gear and the intermediate shaft secondary gear are in a constant meshing design, the intermediate shaft secondary gear is coaxially connected with the intermediate shaft, the intermediate shaft is connected with an intermediate shaft input gear through a spline, the intermediate shaft input gear is in constant meshing with an output gear, the output gear is coaxially connected with an output shaft, and the output shaft transmits power to a transmission shaft through a 7C flange and an output flange plate. Through the above gearbox, the structure is compact, the gear shifting oil cylinder is internally arranged, and the oil way and the shell are integrally designed, so that the complex and severe use working conditions of the soil shoveling and transporting machine can be effectively met.

As a further aspect of the present invention: the speed measuring mechanism comprises a speed measuring gear and a rotating speed sensor which are fixedly installed at the tail end of the intermediate shaft.

As the utility model discloses further scheme again: the gear oil pump is rigidly connected with the input shaft, the gear oil pump pumps lubricating oil out of the oil tank bottom shell through an oil duct, and a filter screen through which oil can pass and a filter screen flange for fixing the filter screen are arranged in the front cover shell.

As a further aspect of the present invention: the filter screen flange is fixedly installed on the front cover shell through bolts and is fixedly installed in the oil duct counter bore. The purpose of disassembly is achieved.

As a further aspect of the present invention: and two paths are formed after the lubricating oil passes through the gear oil pump, one path of the lubricating oil is communicated with the lubricating oil pipe, and the other path of the lubricating oil enters the inner part of the output shaft through an oil passage on the shell and an oil passage on the input shaft.

As a further aspect of the present invention: wherein, the driving motor is designed to rotate positively and negatively. When the vehicle needs to be reversed, the reverse gear can be realized only by controlling the motor to reversely rotate

As a further aspect of the present invention: wherein, a groove for the position sensor to generate signals is arranged on the feedback shaft.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the gearbox in the embodiment, the motor is used for obtaining electric energy through the vehicle-mounted battery, so that zero pollution and zero emission are realized; the motor has a wide high-efficiency area and is matched with a two-gear fixed-shaft gearbox, so that the whole machine can better obtain the comprehensive requirements of dynamic property and economy;

2. the gearbox is compact in structure, the gear shifting oil cylinder is internally arranged, and the oil way and the shell are integrally designed, so that the complex and severe use working conditions of the soil shoveling and transporting machine can be effectively met;

3. the electronic hydraulic gear shifting mechanism is electronic hydraulic gear shifting, hydraulic oil has the characteristics of quick response, accurate position, incompressibility and the like, and the actuating mechanism can be better matched with a control system of a whole vehicle;

4. the shifting fork position feedback system is simple and reliable, and has low failure rate; the gear oil pump forced lubrication technology is mature, the using working condition of the earth shoveling and transporting machine is complex, the oil cleanliness is not high, the lubricating oil filter screen of the machine body can be replaced by disassembling a flange, and the gear oil pump forced lubrication technology is simple, convenient and easy to operate;

5. make the motor reversal can realize when backing the car, save the design of the fender position of backing, simple structure, the reliability is high, and the fault rate is low, can effectively improve the utilization ratio of product, effectively improves work efficiency.

Drawings

FIG. 1 is a schematic view of the overall structure of a two-speed fixed-axis gearbox for an electrically driven earth-moving machine;

FIG. 2 is a schematic view of a detachable strainer and a casting oil hole;

FIG. 3 is a schematic diagram of a gear indication structure;

FIG. 4 is a schematic view of a rotational speed sensor;

FIG. 5 is a schematic illustration of a housing lubrication circuit;

fig. 6 is a schematic diagram of a spray of a lubricating oil pipe.

In the figure, 1, a magnetic exchange valve; 2. a valve seat; 3. a feedback axis; 4. an oil cylinder is arranged inside; 5. a piston; 6. a piston rod; 7. a gear shifting fork; 8. a shifting sliding sleeve; 9. the input shaft is provided with two gears; 10. A gear oil pump; 11. an input shaft first gear; 12. an input shaft; 13. a middle shaft first gear; 14. an intermediate shaft; 15. an intermediate shaft input gear; 16. a second gear of the intermediate shaft; 17. a speed measuring gear; 18. an output gear; 19. an output shaft; 20. a 7C flange; 21. an oil seal seat; 22. A rear cover housing; 23. a front cover housing; 24. filtering with a screen; 25. an output flange plate; 26. a brake disc; 27. a plug; 28. a seal ring; 29. a bolt; 30. a filter screen flange; 31. a position sensor; 32. a rotational speed sensor; 33. lubricating the oil pipe.

Detailed Description

Please refer to fig. 1: the transmission is a schematic overall structure diagram and comprises a transmission body composed of a front cover shell 23 and a rear cover shell 22. Taking the process of shifting the working gear of the gearbox from the first gear to the second gear of the driving gear as an example, when the vehicle speed reaches the shifting speed, the system control generates a shifting signal, at this time, the gearbox control TCU controls the electric torque release to enter a free mode, then controls the electromagnetic directional valve 1 to be powered on, connects hydraulic oil, and after the hydraulic oil is split by the valve seat 2, the hydraulic oil reaches the inside of the oil cavity of the built-in oil cylinder 4, the hydraulic oil can reciprocate through the soil pit piston 5, the piston rod 6 is in interference connection with the piston 5, so the piston rod 6 also reciprocates linearly, and the shifting fork 7 is rigidly connected with the piston rod 6, so the action of the hydraulic oil can drive the shifting fork to push the shifting sliding sleeve 8 to move, when the movement reaches the neutral position, a new number of the neutral position is transmitted back to the control by the feedback shaft 3 and the position sensor 31, the controller controls the electromagnetic directional valve 1 to be powered off at this time, then controls the driving motor to adjust the speed, and obtains the rotating speed of the target gear (input shaft gear 9) through the feedback of the second gear 17 and the rotating speed sensor 32 (speed measuring mechanism), as shown in fig. 4. Through the speed regulation characteristic of the driving motor, after the rotating speed difference between the target gear and the gear shifting sliding sleeve 8 is within a certain range, the TCU controls the electromagnetic directional valve 1 to be electrified, hydraulic oil continuously enters the built-in oil cylinder 4, the gear shifting sliding sleeve 8 is driven to approach the target gear (the input shaft secondary gear 9), and after the gear is hung, the TCU controls the driving motor to gradually recover the torque after the TCU obtains the secondary gear signal through the feedback signal of the feedback shaft 3, so that the gear shifting is completed.

The gearbox body has arranged solenoid directional valve 1, disk seat 2, input shaft 12, jackshaft 14, output shaft 19 from top to bottom in proper order, the one end and the outside power unit of input shaft 12 pass through the splined connection, and the other end installs oil seal seat 21, bearing, input shaft first gear 11, input shaft second gear 9, joins in marriage oil ring and gear oil pump 10 in proper order.

To sum up, shift through using the electric hydraulic control, hydraulic oil has incompressible characteristic, and the position of shifting washs accurately, response speed piece, and in the feedback system that 7 positions of shift fork set up of shifting moreover, feedback shaft 3 touch switch signal comes feedback shift fork 7 and 8 positions of shifting sliding sleeve of shifting through the integration on shift fork 7, and this mode of shifting is simple, and the fault rate is low and with low costs. And the space outside the gearbox body is saved through the built-in gear shifting oil cylinder 4.

A brake disc 26 is coaxially connected to the left side of the output shaft 19, an output flange 25 which is uniformly distributed is fixedly mounted on the outer side of the brake disc 26, and a plug 27 and a sealing ring 28 which is arranged above the plug 27 are arranged in the front cover shell 23.

The second-gear power output route is as follows: after power is connected from the input shaft 12, the power is transmitted to the gear shifting sliding sleeve 8, then the power is transmitted to the input shaft second gear 9 through the gear shifting sliding sleeve 8, the input shaft second gear 9 is in long meshing with the intermediate shaft second gear 16, the power is transmitted to the intermediate shaft 14, the intermediate shaft input gear 15 is in splined connection with the intermediate shaft 14, the intermediate shaft input gear 15 is in normal meshing with the output gear 18, and therefore the power is transmitted to the output shaft 19 again, and then the power is transmitted to the transmission shaft through the 7C flange 20 and the output flange plate 25. In this embodiment, the gearbox body compact structure.

The motor that uses in this application obtains the electric energy through on-vehicle battery, realizes that zero pollution zero release effect almost has the use of very high-efficient district cooperation two fender dead axle gearboxes and makes the complete machine can be better obtains dynamic property and economic nature's comprehensive requirement. The internal spline of the gear shifting sliding sleeve 8 is provided with a gear positioning groove and is designed into a tooth shape with taper with the external spline of the gear, so that the gear can be effectively prevented from being disengaged.

And, make the motor reversal can realize when backing the car, save the design of the fender position of backing, simple structure, the reliability is high, and the fault rate is low, can effectively improve the utilization ratio of product, effectively improves work efficiency.

The lubricating oil path is shown in figure 2; FIG. 5; as shown in fig. 6, the gear oil pump 10 is rigidly connected through the input shaft 12 to generate power, lubricating oil is pumped out from the oil pan, the oil passes through the filter screen 24 and the filter screen flange 30, then enters the gear oil pump 10 through the casing casting oil passage, the filter screen flange 30 is fixed on the front cover casing 23 through the bolts 29, and the filter screen 24 is fixed in the oil passage counter bore by the filter screen flange 30, so as to achieve the detachable purpose. After the oil liquid reaches the gear oil pump 10, the oil liquid is divided into two paths, one path of oil liquid continues to reach the lubricating oil pipe 33 upwards as shown in fig. 5, and the meshing position of the spray gear and other joint surfaces pass through the oil hole formed in the lubricating oil pipe 33; the other path enters the output shaft 19 through the oil passage on the shell and the oil passage on the input shaft 12, so that two needle roller bearings on the input shaft 12 are lubricated.

The gear oil pump forced lubrication technology is mature, the soil shoveling transport machinery is complex in use condition, the oil liquid cleanliness is not high, the lubricating oil filter screen of the mechanical body can be replaced by detaching a flange, and the gear oil pump forced lubrication technology is simple, convenient and easy to operate.

As shown in fig. 3, the feedback shaft 3 is provided with two grooves, and the two grooves are driven by the piston rod 6 to move linearly, so that when the two grooves are contacted with or separated from the position sensor 31, an electric signal is generated and fed back to the TCU, which is a principle of gear feedback.

The working principle is as follows: when the preparation machine works at the first gear, the preparation machine belongs to a low-speed and high-torque working condition, power enters the input shaft first gear 11 from the motor through the input shaft 12, is transmitted to the intermediate shaft first gear 13, is transmitted to the output shaft 19 and the output gear 18 through the intermediate shaft input gear 15, and is transmitted to the rotating shaft through the flanges at the two ends, so that the effect of high-torque power output is achieved.

When a control system detects that a vehicle reaches a gear shifting speed, a TCU can temporarily pass the control authority of the whole vehicle, firstly, a motor is controlled to be in a torque-off free mode, a control electromagnetic valve is electrified, hydraulic oil is connected into a built-in hydraulic oil cylinder, the hydraulic oil pushes a piston 5 to drive a piston rod 6 to reciprocate, the gear shifting fork 7 is rigidly connected onto the piston rod 6 and is embedded into a gear shifting sliding sleeve 8, so that the sliding sleeve is driven to move, the purpose of gear shifting is achieved, when the sliding sleeve reaches a neutral position, a feedback shaft touch sensor embedded on the fork is arranged, so that a neutral electric signal is fed back to the TCU, at the moment, the TCU control motor enters a speed regulation mode, the rotating speed of a target gear fed back by a rotating speed sensor 32 is a target rotating speed, when the rotating speed of the motor is regulated to be within a certain range with the rotating speed of the target gear, the TCU control electromagnetic valve is electrified by driving the piston rod 6 to drive the fork and the sliding sleeve, and the target gear is engaged by an internal spline and an external spline, so that a complete gear shifting process is described.

At the moment, the equipment is in a second gear position and belongs to a high-speed transfer working condition, power enters the second gear 9 of the input shaft through the input shaft by the motor, is transmitted to the second gear 16 of the intermediate shaft, is transmitted to the output shaft 19 and the output gear 18 through the input gear 15 of the intermediate shaft, and is transmitted to the rotating shaft through flanges at two ends, and the gear belongs to a low-torque high-rotating-speed transportation state due to different design of speed ratios.

When the vehicle needs to be reversed, the reverse gear can be realized only by controlling the motor to reversely rotate.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (10)

1. Electric drive shovel soil transport machinery is with two dead axle gearboxes that keep off, its characterized in that: include by the gearbox body that protecgulum casing (23) and back shroud casing (22) are constituteed and the TCU controller of fixed mounting on the protecgulum, the built-in hydro-cylinder (4) of usefulness of shifting of back lid, the inside of built-in hydro-cylinder (4) is provided with piston (5) that can be promoted to be reciprocating motion by hydraulic oil, piston (5) are connected with piston rod (6) interference, one side rigid connection of piston rod (6) has shift fork (7), the below of shift fork (7) is equipped with synchronous motion's shift sliding sleeve (8), the inside of gearbox body is provided with feedback shaft (3) of accepting the stroke signal of shifting and position sensor (31) with feedback shaft (3) signal connection, passes back the signal of accepting to the controller through feedback shaft (3) and position sensor (31), controller and switching-over solenoid valve (1), driving motor are electric connection, the middle part of gearbox body is provided with the mechanism that can feed back the target gear speed of gear, through switching-over of TCU controller solenoid directional valve (1) switches on, continues to get into in the gear shift sliding sleeve (4), drives shift target gear shift hydro-cylinder (8) and is close to gear target gear shift hydro-cylinder (8).

2. The two-gear fixed-shaft gearbox for electric-driven earth-moving transport machinery according to claim 1, characterized in that: the transmission is characterized in that an electromagnetic directional valve (1), a valve seat (2), an input shaft (12), an intermediate shaft (14) and an output shaft (19) are sequentially arranged on a transmission body from top to bottom, one end of the input shaft (12) is connected with an external power unit through a spline, and an oil seal seat (21), a bearing, an input shaft first-gear (11), an input shaft second-gear (9), an oil distribution ring and a gear oil pump (10) are sequentially arranged at the other end of the input shaft (12).

3. The two-gear fixed-shaft gearbox for electric-driven earth-moving transport machinery according to claim 2, characterized in that: the gear shifting sliding sleeve (8) is connected with one end of an input shaft (12), and the power of the external power unit is transmitted to the gear shifting sliding sleeve (8) and the input shaft secondary gear (9) through the input shaft (12).

4. The two-gear fixed-shaft gearbox for electric-drive shovel soil transportation machinery according to claim 2 or 3, characterized in that: the transmission device is characterized in that a middle shaft two-gear (16) is meshed and connected with the lower portion of the input shaft two-gear (9) and is in a normally meshed design, the middle shaft two-gear (16) is coaxially connected with a middle shaft (14), the middle shaft (14) is connected with a middle shaft input gear (15) through a spline, the middle shaft input gear (15) is normally meshed with an output gear (18), the output gear (18) is coaxially connected with an output shaft (19), and the output shaft (19) transmits power to a transmission shaft through a 7C flange (20) and an output flange plate (25).

5. The two-gear fixed-shaft gearbox for electric-driven shovel and transport machinery as claimed in claim 4, wherein: the speed measuring mechanism comprises a speed measuring gear (17) and a rotating speed sensor (32), wherein the speed measuring gear (17) is fixedly installed at the tail end of the intermediate shaft (14).

6. The two-gear fixed-shaft gearbox for electric-driven earth-moving transport machinery according to claim 2, characterized in that: the gear oil pump (10) is rigidly connected with the input shaft (12), the gear oil pump (10) pumps lubricating oil out of the oil tank bottom shell through an oil duct, and a filter screen flange (30) for fixing the filter screen (24) and a filter screen (24) through which oil passes is arranged in the front cover shell (23).

7. The two-gear fixed-shaft gearbox for electric-driven shovel and transport machinery as claimed in claim 6, wherein: the filter screen flange (30) is fixedly installed on the front cover shell (23) through bolts (29), and the filter screen flange (30) fixedly installs the filter screen (24) in an oil duct counter bore.

8. The two-speed fixed-axis gearbox for an electric-drive shovel loader according to claim 6 or 7, characterized in that: after the lubricating oil passes through the gear oil pump (10), two paths are formed, one path of the lubricating oil is communicated with a lubricating oil pipe (33), and the other path of the lubricating oil enters the interior of the output shaft (19) through an oil passage on the shell and an oil passage on the input shaft (12).

9. The two-gear fixed-shaft gearbox for electric-driven earth-moving transport machinery according to claim 1, characterized in that: the driving motor is designed to rotate positively and negatively.

10. The two-gear fixed-shaft gearbox for an electric-drive shovel soil transport machine according to claim 1, characterized in that: the feedback shaft (3) is provided with a groove for the position sensor (31) to generate signals.

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