V-shaped milling excavator

Abstract

The utility model discloses a V-shaped milling excavator, which belongs to the technical field of engineering machinery design, the V-shaped milling excavator comprises a driving shaft, a transmission shaft, a power output shaft, a milling and excavating drum and milling and planing teeth, a frame consists of a square shell in the middle and a V-shaped head at the top, and shaft sleeves are inwards mounted at two ends of the V-shaped head; the driving shaft is installed on the lower portion of the square shell through the driving bearing, the transmission shaft is installed on the upper portion of the square shell, the power output shaft is installed in the shaft sleeve through the power bearing, the power bevel gear is installed at the inner end of the power output shaft and meshed with the transmission bevel gear, and the square shaft is arranged at the outer end of the power output shaft. A square hole connected with the square shaft is formed in the center of the milling and digging drum, and the milling teeth are evenly distributed on the outer surface of the milling and digging drum. Compared with an existing single-head milling and excavating machine scheme, the milling and excavating machine has a larger milling and excavating range, working blind areas can be reduced as much as possible through the V-shaped design, and the reciprocating frequency is reduced. In addition, higher power transmission efficiency and working power are achieved through transmission of the gear set.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction machinery design, and particularly relates to a V-shaped milling excavator. Background Art

[0002] A milling excavator is a mechanical auxiliary tool used in conjunction with an excavator, and can be widely used in construction fields such as tunnels, ditches, engineering construction, and rock excavation. It has the advantages of high efficiency, precision, and low cost. In the existing structure of milling excavators, chain or belt drives are mostly used, resulting in large sizes and small powers, which limits their application scenarios. In addition, the existing solutions generally adopt a single milling head structure, with limited milling area and low working efficiency. How to improve the structure of the existing milling excavator and solve the above technical problems has long troubled the technicians in this field. Summary of the Utility Model

[0003] In view of the above technical problems, the utility model provides a V-shaped milling excavator, which has a larger milling range. The V-shaped design can minimize the working blind area and reduce the reciprocating times. In addition, the use of a gear set drive has higher power transmission efficiency and working power.

[0004] The utility model solves the above problems through the following technical means:

[0005] A V-shaped milling excavator, characterized by comprising a mounting frame, a drive shaft, a transmission shaft, a power output shaft, a milling drum, and milling teeth. Among them: the mounting frame consists of a square shell in the middle and a V-shaped head at the top. Both ends of the V-shaped head are provided with holes, and bushings are coaxially installed outward in the holes; the drive shaft is installed at the lower part of the square shell through a drive bearing. A drive gear is sleeved in the middle of the drive shaft, and an end cover for sealing is installed at the end of the drive shaft; the transmission shaft is installed at the upper part of the square shell. A transmission spur gear is sleeved in the middle of the transmission shaft. The transmission spur gear meshes with the drive gear. Transmission bevel gears are sleeved at both sides of the transmission shaft where it is located at the position of the transmission spur gear. A plurality of through holes are symmetrically opened at the position of the transmission spur gear close to the middle hole. A plurality of mounting holes are symmetrically opened at the position of the transmission bevel gear close to the middle hole. The through holes and the mounting holes are fixedly connected by connecting bolts. A transmission bearing is installed between the inner wall of the stepped hole on the outer end face of the transmission bevel gear and the transmission shaft; the power output shaft is installed in the bushing through a power bearing. A power bevel gear is installed at the inner end of the power output shaft. The power bevel gear meshes with the transmission bevel gear. A square shaft is provided at the outer end of the power output shaft; a square hole for connecting the square shaft is provided at the center of the milling drum; the milling teeth are evenly distributed on the outer surface of the milling drum.

[0006] Preferably, the included angle range of the V-shaped head is 130° to 160°.

[0007] Preferably, a base is installed at the bottom of the mounting frame. The base is a square frame, and an outer ring seat is provided at the bottom of the base.

[0008] Preferably, it further includes a connecting frame for connecting the working arm. An inner ring seat is provided at the top of the connecting frame. The inner ring seat is sleeved inside the outer ring seat, and balls are provided on the upper surface of the outer ring seat.

[0009] Preferably, it further includes a rotating mechanism. The rotating mechanism is composed of a worm gear and a worm. The worm gear is installed on the outer ring seat, and the worm is installed at the top of the connecting frame. The worm drives the worm gear to rotate to drive the base to rotate.

[0010] A V-shaped milling excavator of the present invention has the following beneficial effects:

[0011] This milling excavator is provided with two milling heads that work synchronously. The two milling heads adopt a new V-shaped structure, which can not only effectively improve the milling range, but also minimize the working blind area as much as possible, significantly improving the working efficiency and reducing the reciprocating times. In addition, this solution adopts a gear set transmission solution, which has higher power transmission efficiency and better synchronism compared with the chain transmission and belt transmission solutions. Finally, this device is configured with structures such as a sealing end cover and a shaft sleeve, which can achieve good overall machine sealing and prevent external dust and impurities from entering the mechanical interior. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 is a schematic diagram of the transmission shaft structure of the present invention;

[0015] Figure 3 is a schematic diagram of the power output shaft structure of the present invention;

[0016] Figure 4 is a schematic diagram of the base and connecting frame structure of the present invention;

[0017] Figure 5 is a schematic diagram of the rotating mechanism structure of the present invention.

[0018] Among them, 1 - installation frame, 101 - square shell, 102 - V-shaped head, 103 - bushing, 2 - drive shaft, 201 - drive bearing, 202 - drive gear, 203 - end cover, 3 - transmission shaft, 301 - transmission spur gear, 302 - transmission bevel gear, 303 - through hole, 304 - mounting hole, 305 - connecting bolt, 306 - transmission bearing, 4 - power output shaft, 401 - power bearing, 402 - power bevel gear, 403 - square shaft, 5 - milling drum, 6 - milling teeth, 7 - base, 8 - inner ring seat of connecting frame, 9 - rotating mechanism, 901 - worm gear, 902 - worm shaft. Detailed implementation manners

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0020] The present utility model will be described in detail below with reference to the accompanying drawings.

[0021] As Figures 1 to 5 shown, the V-shaped milling excavator includes an installation frame 1, a drive shaft 2, a transmission shaft 3, a power output shaft 4, a milling drum 5 and milling teeth 6. In the figure: The installation frame 1 is composed of a square shell 101 in the middle and a V-shaped head 102 at the top. Both ends of the V-shaped head 102 are provided with holes, and bushings 103 are coaxially installed outward in the holes. The bushings 103 are used to support the rotating shaft. Specifically, preferably, the included angle α of the V-shaped head 102 ranges from 130° to 160°. This milling excavator is provided with two milling heads that work synchronously. The two milling heads adopt a new V-shaped structure, which can not only effectively increase the milling range, but also minimize the working blind area as much as possible, significantly improving the working efficiency and reducing the reciprocating times.

[0022] In the figure, the drive shaft 2 is installed at the lower part of the square housing 101 through a drive bearing 201. A drive gear 202 is sleeved on the middle part of the drive shaft 2, and an end cover 203 for sealing is installed at the end of the drive shaft 2. The transmission shaft 3 is installed at the upper part of the square housing 101. A transmission spur gear 301 is sleeved on the middle part of the transmission shaft 3. The transmission spur gear 301 meshes with the drive gear 202. Transmission bevel gears 302 are sleeved on both sides of the transmission shaft 3 at the position of the transmission spur gear 301. A plurality of through holes 303 are symmetrically arranged at the position of the transmission spur gear 301 close to the middle hole. A plurality of mounting holes 304 are symmetrically arranged at the position of the transmission bevel gear 302 close to the middle hole. The through holes 303 and the mounting holes 304 are fixedly connected by connecting bolts 305. A transmission bearing 306 is installed between the inner wall of the stepped hole on the outer end face of the transmission bevel gear 302 and the transmission shaft 3. Specifically, the two transmission bevel gears 302 and a transmission spur gear 301 can be fixedly connected by the connecting bolts 305 in the middle. When the transmission bevel gears 302 and the transmission spur gear 301 are actually installed, they are in clearance fit with the transmission shaft 3.

[0023] In the figure, the power output shaft 4 is installed in the bushing 103 through a power bearing 401. A power bevel gear 402 is installed at the inner end of the power output shaft 4. The power bevel gear 402 meshes with the transmission bevel gear 302. A square shaft 403 is arranged at the outer end of the power output shaft 4. A square hole for connecting the square shaft 403 is arranged at the center of the milling and digging drum 5. Milling teeth 6 are evenly distributed on the outer surface of the milling and digging drum 5.

[0024] During actual operation, a base 7 is installed at the bottom of the installation frame 1. The base 7 is a square frame, and an outer ring seat is arranged at the bottom of the base 7. In the figure, a connecting frame 8 for connecting the working arm is further included. An inner ring seat is arranged at the top of the connecting frame 8. The inner ring seat is sleeved in the outer ring seat, and balls are arranged on the upper surface of the outer ring seat. Specifically, the rotating mechanism 9 is composed of a worm gear 901 and a worm 902. The worm gear 901 is installed on the outer ring seat, and the worm 902 is installed at the top of the connecting frame 8. The worm 902 drives the worm gear 901 to rotate to drive the base 7 to rotate and complete the attitude adjustment.

[0025] It should be noted that this scheme adopts a gear train transmission scheme. Compared with the chain transmission and belt transmission schemes, the power transmission efficiency is higher and the synchronism is better. Finally, the device is configured with structures such as a sealing end cover and a bushing, which can achieve good overall sealing performance of the machine and prevent external dust and impurities from entering the mechanical interior.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A V-type milling and excavating machine, characterized in that, It includes an installation rack (1), a drive shaft (2), a transmission shaft (3), a power output shaft (4), a milling drum (5) and milling teeth (6), wherein: The installation rack (1) consists of a square shell (101) in the middle and a V-shaped head (102) at the top. Both ends of the V-shaped head (102) are provided with holes, and bushings (103) are coaxially installed outward in the holes; The drive shaft (2) is installed at the lower part of the square shell (101) through a drive bearing (201). A drive gear (202) is sleeved in the middle of the drive shaft (2), and an end cover (203) for sealing is installed at the end of the drive shaft (2); The transmission shaft (3) is installed at the upper part of the square shell (101). A transmission spur gear (301) is sleeved in the middle of the transmission shaft (3). The transmission spur gear (301) meshes with the drive gear (202). Transmission bevel gears (302) are sleeved at both sides of the transmission shaft (3) where it is located at the position of the transmission spur gear (301). A plurality of through holes (303) are symmetrically opened at the position of the transmission spur gear (301) close to the middle hole. A plurality of installation holes (304) are symmetrically opened at the position of the transmission bevel gear (302) close to the middle hole. The through holes (303) and the installation holes (304) are fixedly connected by connecting bolts (305). A transmission bearing (306) is installed between the inner wall of the stepped hole on the outer end face of the transmission bevel gear (302) and the transmission shaft (3); The power output shaft (4) is installed in the bushing (103) through a power bearing (401). A power bevel gear (402) is installed at the inner end of the power output shaft (4). The power bevel gear (402) meshes with the transmission bevel gear (302). A square shaft (403) is provided at the outer end of the power output shaft (4); A square hole for connecting the square shaft (403) is provided at the center of the milling drum (5); The milling teeth (6) are evenly distributed on the outer surface of the milling drum (5).

2. The V-type milling excavator according to claim 1, wherein The included angle (α) of the V-shaped head (102) ranges from 130° to 160°.

3. The V-type milling excavator according to claim 2, characterized in that, A base (7) is installed at the bottom of the installation rack (1). The base (7) is a square frame, and an outer ring seat is provided at the bottom of the base (7).

4. The V-type milling excavator according to claim 3, characterized in that, It further includes a connecting frame (8) for connecting the working arm. An inner ring seat is provided at the top of the connecting frame (8). The inner ring seat is sleeved in the outer ring seat, and balls are provided on the upper surface of the outer ring seat.

5. The V-shaped milling excavator according to claim 4, characterized in that, It further includes a rotating mechanism (9). The rotating mechanism (9) consists of a worm gear (901) and a worm (902). The worm gear (901) is installed on the outer ring seat, and the worm (902) is installed at the top of the connecting frame (8). The worm (902) drives the worm gear (901) to rotate to drive the base (7) to rotate.

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