CN108412999A - A kind of hydraulic pressure three-wheel slotter transmission system - Google Patents

Abstract

The invention discloses a kind of hydraulic pressure three-wheel slotter transmission systems, turn speed reducer and milling wheel including hydraulic motor group, gear-box, shell, gear-box includes babinet and the driving gear set mounted on box house and intermediate gear group, hydraulic motor group is mounted on the top of the box of gear-box, and output shaft passes through the driving gear set engaged transmission on the first transmission shaft in multigroup bevel gear and gear-box；It includes mounted on three groups of the left, center, right of the bottom of box that shell, which turns speed reducer, output gear is installed on its every group of central shaft, three groups of output gears are connected by meshing transmission by three groups of intermediate gear groups and the driving gear set of the first transmission shaft respectively, every group of shell turn speed reducer be it is each former and later two, each shell turns to install a milling wheel on speed reducer.Technical scheme of the present invention rationally utilizes the reasonable installation of stage-geared and multiple milling wheels to arrange, improves the reliability and efficiency of hydraulic pressure slotter, compensates for the problems of the milling wheel of existing hydraulic pressure two-wheel flute milling machine.

Description

A transmission system of a hydraulic three-wheel slot milling machine

technical field

The invention relates to the technical field of hydraulic slot milling machines, in particular to a transmission system of a hydraulic three-wheel slot milling machine.

Background technique

The existing special equipment for underground diaphragm wall construction is mainly a hydraulic double-wheel milling machine imported from Germany and other countries. The standard milling depth is 44m, the maximum can reach 80m, and the milling width ranges from 650 to 1800mm. The horizontal length of the milling groove is 2800mm; according to the geological conditions, different types of milling cutter wheels can be replaced to meet the needs of continuous construction in various strata such as clay, silt, and rock formations.

The transmission system of the milling machine and the steel cable under the mast suspend a steel milling tool holder with a hydraulic and electrical system that can be controlled by the main engine. Three hydraulic motors are installed at the bottom, arranged horizontally, and the hydraulic motors on both sides pass through the planet respectively. The gear reducer drives 2 milling wheels. When milling slots, the two milling wheels rotate at a low speed and in opposite directions. The teeth of the milling wheels mill and break the surrounding rock of the formation, and continuously add mud to the milled slot holes through the ground grouting equipment. The middle hydraulic motor drives the built-in mud pump. The sand suction port in the middle of the milling wheel discharges the excavated rock slag and mud to the bottom mud station for screening and treatment, and then returns to the groove section, so that the reciprocating cycle is excavated downward until the final hole is formed into a groove.

The existing hydraulic double-wheel slot milling machine has the advantages of wide construction range, high efficiency, high precision, and low pollution. However, the one-time investment cost of the slot milling machine and supporting equipment is too expensive, and domestic maintenance capabilities are difficult to ensure the continuous operation of the slot milling machine. Need, the key is that the components are basically all dependent on imports. In addition, there is another shortcoming of the transmission system of the double-wheel slot milling machine. There must be a section of surrounding rock with a width of about 119mm between the two forward and reverse rotating milling wheels, which cannot be milled by the milling wheels, although it is pressed by its own weight in the end. It will be a very serious damage to the long-term working equipment to flatten the width of this section. Therefore, there is an urgent need to develop a novel hydraulic slot milling machine transmission system to make up for the deficiency of the hydraulic double-wheel slot milling machine.

Contents of the invention

The object of the present invention is to provide a hydraulic three-wheel slot milling machine with reliable transmission performance and high system strength.

In order to achieve the above object, the present invention is specifically achieved through the following technical solutions:

A transmission system of a hydraulic three-wheel milling machine, including a hydraulic motor group, a gearbox, a shell-rotating reducer and a milling wheel. The gearbox includes a box body and a transmission gear set and an intermediate gear set installed inside the box body. Installed on the top of the gearbox box, its output shaft is engaged with the transmission gear set on the first transmission shaft in the gearbox through multiple sets of bevel gears;

The shell-rotating reducer includes three sets of left, middle, and right installed at the bottom of the box, and each set of output gears is installed on the central shaft, and the three sets of output gears are respectively engaged with the transmission gear set of the first transmission shaft through three sets of intermediate gear sets. Connection, each group of shell-turning reducers has two front and back respectively, and a milling wheel is installed on each shell-turning reducer.

Further, the rotational speeds of each group of shell-revolving reducers are the same.

Further, the transmission gear set includes a first transmission gear and a second transmission gear, and the intermediate gear set includes a first intermediate gear set, a second intermediate gear set, and a third intermediate gear set; the first transmission gear and the first intermediate gear on one side The gear sets are meshed for transmission, and the second transmission gear is meshed with the other adjacent second intermediate gear set and the third intermediate gear set for transmission.

Further, the first intermediate gear set, the second intermediate gear set and the third intermediate gear set each include a plurality of intermediate gears meshing with each other, wherein the transmission stages of the intermediate gears of the second intermediate gear set and the third intermediate gear set They are the same, and differ from the transmission stages of the intermediate gears of the first intermediate gear set by an odd number.

Further, the hydraulic motor group includes four hydraulic motors, and a bevel gear is installed on the output shaft of each hydraulic motor.

Further, the first transmission gear is two coaxial gears with the same diameter, which are installed on the first transmission shaft and located on both sides of the second transmission gear, and each coaxial gear is meshed with two bevel gears on one side for transmission.

Further, the box of the gearbox includes an upper box and a lower box connected and sealed by bolts, and the first transmission shaft, the rotating shaft of the intermediate gear and the central shaft of the shell-rotating reducer are installed in the box through bearings.

Further, the milling wheel includes a wheel cylinder, a tooth seat and milling teeth, the wheel cylinder and the tooth seat are welded, and the tooth seat and the milling teeth are fixed through slots and positioning pins.

Further, a grouting pipe is fixed outside the gearbox.

Compared with the prior art, the technical solution of the present invention improves the traditional two-wheel design of the hydraulic slot milling machine, rationally utilizes the multi-stage gear transmission and the reasonable installation arrangement of multiple milling wheels, realizes the three-wheel slot milling, and improves the hydraulic slot milling machine. The reliability and efficiency of the machine make up for the problems of the two forward and reverse rotating milling wheels of the existing hydraulic double-wheel milling machine, and make up for the vacancy of the hydraulic three-wheel milling machine technology.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the internal transmission schematic diagram of the present invention;

Fig. 3 is A-A sectional view in Fig. 2 of the present invention;

Fig. 4 is the sectional view of B-B transmission section in Fig. 2 of the present invention;

Fig. 5 is a sectional view of C-C transmission section in Fig. 2 of the present invention;

Fig. 6 is a sectional view of D-D transmission section in Fig. 2 of the present invention;

Fig. 7 is a front view of the milling wheel in the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 and 2, a transmission system of a hydraulic three-wheel slot milling machine of the present invention includes a hydraulic motor group 1, a gear box 2, a shell-rotating reducer 3 and a milling wheel 4, and the gear box 2 includes a box body and The transmission gear set and the intermediate gear set installed inside the casing, and the outside of the gear box 2 are fixed with a grouting pipe 21 . The hydraulic motor group 1 is installed on the top of the gearbox 2, and its output shaft 5 is engaged with transmission gear sets on the first transmission shaft 7 in the gearbox through multiple sets of bevel gears 6.

The shell-turning reducer 3 is a GFT shell-turning reducer. The shell-turning reducer 3 includes three groups of left, middle and right installed at the bottom of the box. The speed ratio and speed of each group of shell-turning reducer 3 are the same. Output gears 9 are installed on the center shaft 8 of every group of shell-rotating reducers 3, and three groups of output gears 9 are connected with the transmission gears of the first power transmission shaft 7 through three groups of intermediate gears respectively. Each group of shell-turning reducer 3 is two front and rear, and each shell-turning reducer 3 is equipped with a milling wheel 4, which is connected by bolts to realize the left, middle and right three sets of milling wheels 4 passing through the transmission gear set, intermediate gear set and The three sets of shell-revolving reducers are driven independently.

The transmission gear set includes a first transmission gear 10 and a second transmission gear 11 installed on the first transmission shaft 7. The intermediate gear sets include a first intermediate gear set 12 , a second intermediate gear set 13 and a third intermediate gear set 14 .

The first transmission gear 10 is engaged with the first intermediate gear set 12 on one side for transmission, and the second transmission gear 11 is respectively engaged with the second intermediate gear set 13 and the third intermediate gear set 14 for transmission.

The first intermediate gear set 12 , the second intermediate gear set 13 and the third intermediate gear set 14 each include a plurality of intermediate gears meshed with each other. Wherein the transmission stages of the intermediate gears of the second intermediate gear set 13 and the third intermediate gear set 14 are the same, and differ from the transmission stages of the intermediate gears of the first intermediate gear set 11 by an odd number, thereby realizing left and right two milling The wheels turn in the opposite direction.

The hydraulic motor group 1 includes four hydraulic motors, and a bevel gear 6 is installed on the output shaft of each hydraulic motor.

As shown in FIG. 3 , the hydraulic motor unit 1 concentrates the torque on the first transmission shaft 7 through the bevel gear 6 and the first transmission gear 10 , and distributes the output through the first transmission gear 10 and the second transmission gear 11 . Figure 4 shows the transmission relationship of the first intermediate gear set 12 on the left side, and the transmission from the first transmission shaft 7 to the central shaft 8 of the side casing reducer 3 is a three-stage gear transmission. After the first intermediate gear set 12 meshes with the first transmission gear 10, the torque is transmitted to the first main shaft 122 of the first intermediate gear 121, and is coaxially output by the second intermediate gear 123 of the first main shaft 122, and then Through the engagement of the third intermediate gear 124 and the output gear 9 of the left group of casing-revolving reducers 3 , it is transmitted to the center shaft 8 of the group of casing-revolving reducers 3 , and then transmitted to the front and rear casing-revolving reducers 3 of the group.

As shown in FIG. 5 , it is the transmission relationship of the second intermediate gear set 13 in the middle, and the transmission from the first transmission shaft 7 to the central shaft 8 of the side casing speed reducer 3 is a four-stage gear transmission. The second transmission gear 11 is transmitted to the center shaft 8 of the group of casing-reducing reducers 3 through the engagement of the fourth intermediate gear 131, the fifth intermediate gear 132, the sixth intermediate gear 133 and the output gear 9 of the middle group of casing-revolving reducers 3 on, and then passed on to the front and rear two casings of the group and turn on the reducer 3. Similarly, as shown in Figure 6, it is the transmission relationship of the third intermediate gear set 14 on the right side. Since the steering of the left side milling wheel and the right side milling wheel must be opposite, from the first transmission shaft 7 to the side casing to turn the reducer The central shaft 8 of 3 is a four-stage gear transmission. The side intermediate gear set can be meshed by the fourth intermediate gear 131, and then the seventh intermediate gear 141, the eighth intermediate gear 142, and the output gear 9 of the right group of shell-rotating reducer 3 are meshed and transmitted to the set of shell-rotating reducer 3 On the center shaft 8, and then transmitted to the front and rear two shells of the group and turn on the reducer 3. In order to ensure that the rotating speeds of the left, middle and right three groups of milling wheels 4 are the same, from the first transmission shaft 7 to the central shaft 8 of the left, middle and right three groups of shell-rotating reducers 3, the total speed ratios of the three transmission gear routes must be consistent.

The first transmission gear 10 includes two coaxial gears 15 with the same diameter, which are installed on the first transmission shaft 7 and located on both sides of the second transmission gear 11, and each coaxial gear is meshed with two bevel gears 6 on one side for transmission. . The first intermediate gear 120 of the first intermediate gear set 12 meshing with the first transmission gear 10 includes two coaxial gears with the same diameter, which are located on both sides of the second intermediate gear 123 .

For the convenience of installation, the box body of the gearbox 2 includes an upper box body 16 and a lower box body 17 connected and sealed by bolts. Bearings are installed in the box.

Milling wheel 4 comprises wheel cylinder 18, tooth holder 19 and milling tooth 20, and wheel cylinder 18 is welded with tooth holder 19, and tooth holder 19 and milling tooth 20 are fixed by slot and dowel. 4 packs of milling wheels, as the key parts of the milling operation of the slotting machine, are in direct and continuous contact with the underground rock and soil with a certain strength. and damage, the brittleness should not be too large, and a certain impact toughness is required. Therefore, 42CrMo is selected as the material of the wheel barrel 18 and the tooth seat 19, and the cutter head of the milling tooth 20 is made of aluminum-lead hard alloy. The welding or consolidation quality of the tooth seat 19 and the milling teeth 20 is also an important factor for realizing the continuous operation of the milling wheel 4. When the milling wheel 4 is in operation, the tooth seat 19 and the milling teeth 20 will not only be subjected to the vertical and powerful vertical milling resistance at the top, but also Will be subject to the lateral pressure of the milling rock-soil layer, in order to ensure that the milling wheel 4 does not deform under the working stress condition, the tooth seat 19 adopts a thick plate of about 35mm. Preferably, the connection between the wheel cylinder 18 and the gear holder 19 is double-sided groove welding, and the gear holder 19 and the milling teeth 20 are fixed by dovetail slots and positioning pins, so as to meet the construction requirements and facilitate the replacement of the milling teeth 20 .

It should be understood that although this specification describes preferred implementations, not each implementation only includes an independent technical solution. This description of the specification is only for clarity, and those skilled in the art should take the specification as a whole. The technical solutions in each preferred embodiment can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (9)

1. A hydraulic three-wheel groove milling machine transmission system is characterized in that it comprises a hydraulic motor group (1), a gear box (2), a shell-turning reducer (3) and a milling wheel (4), and the gear box includes a casing And the transmission gear set and intermediate gear set installed inside the box, the hydraulic motor set is installed on the top of the box body of the gearbox, and its output shaft (5) connects with the first transmission shaft in the gearbox through multiple sets of bevel gears (6) (7) The transmission gear set on the top is meshed for transmission; The shell-rotating reducer includes three sets of left, middle and right installed at the bottom of the box, and each set of central shafts (8) is equipped with output gears (9), and the three sets of output gears are respectively connected to the first transmission shaft through three sets of intermediate gear sets The transmission gear sets are meshed and connected, and each group of shell-turning reducers has two front and rear respectively, and a milling wheel is installed on each shell-turning reducer. 2. The transmission system of the hydraulic three-wheel slot milling machine according to claim 1, wherein the rotating speeds of each group of shell-rotating reducers are the same. 3. The transmission system of hydraulic three-wheel slot milling machine according to claim 1, characterized in that, the transmission gear set comprises a first transmission gear (10) and a second transmission gear (11), and the intermediate gear set comprises a first intermediate gear Group (12), the second intermediate gear set (13) and the third intermediate gear set (14); the first transmission gear is meshed with the first intermediate gear set on one side for transmission, and the second transmission gear is respectively connected to the other adjacent first intermediate gear set The second intermediate gear set and the third intermediate gear set are meshed for transmission. 4. The transmission system of hydraulic three-wheel slot milling machine according to claim 3, wherein the first intermediate gear set, the second intermediate gear set and the third intermediate gear set all comprise a plurality of intermediate gears meshing with each other, The transmission stages of the intermediate gears of the second intermediate gear set and the third intermediate gear set are the same, and differ from the transmission stages of the intermediate gears of the first intermediate gear set by an odd number. 5. The transmission system of hydraulic three-wheel slot milling machine according to claim 1, characterized in that, the hydraulic motor group includes four hydraulic motors, and the bevel gear group is four bevel gears, which are respectively installed on the output shafts of the hydraulic motors . 6. The transmission system of hydraulic three-wheel milling machine according to claim 1, characterized in that, the first transmission gear is two coaxial gears (15) with the same diameter, which are installed on the first transmission shaft and located at the second On both sides of the two transmission gears, each coaxial gear meshes with two bevel gears on one side for transmission. 7. The transmission system of hydraulic three-wheel slot milling machine according to claim 1, characterized in that, the casing of the gear box comprises an upper casing (16) and a lower casing (17) connected and sealed by bolts, the first The central shaft of the rotating shaft (18) of power transmission shaft, intermediate gear and the casing turns speed reducer all is installed in the casing by bearing. 8. The transmission system of hydraulic three-wheel slot milling machine according to claim 1, characterized in that, the milling wheel comprises a wheel cylinder (18), a gear seat (19) and milling teeth (20), and the wheel cylinder and the tooth seat are welded, The tooth holder and milling teeth are fixed by slots and positioning pins. 9. The transmission system of the hydraulic three-wheel slot milling machine according to claim 1, characterized in that a grouting pipe (21) is fixed outside the gearbox.