CN112360489B

CN112360489B - Cutting cutter head of hybrid rectangular pipe jacking machine

Info

Publication number: CN112360489B
Application number: CN202011280628.3A
Authority: CN
Inventors: 唐夕明; 吕庆洲; 辛翰文; 时磊
Original assignee: Anhui Tangxing Equipment Technology Co Ltd
Current assignee: Anhui Tangxing Equipment Technology Co Ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2022-12-06
Anticipated expiration: 2040-11-16
Also published as: CN112360489A

Abstract

The invention discloses a cutting cutter head of a hybrid rectangular pipe jacking machine, which comprises a main cutter body, a cutter rest, an auxiliary cutter body, a transmission gear ring, a partition plate and a driving motor, wherein the main cutter body is provided with a cutter head; because the main cutter body is arranged in front of the auxiliary cutter body, the main cutter body firstly excavates a circular cross section and then excavates a square edge by the auxiliary cutter body, and the preceding excavation of the main cutter body creates better conditions for the subsequent excavation of the square edge, so that the subsequent excavation of the square edge becomes easier and faster; the rotary cutter on the auxiliary cutter body can rotate and move simultaneously through gear ring and gear transmission, the structure is simple, the stability is high, square edge excavation is carried out through the rotation and movement modes, and the effect is better; the middle of the stirring blade is arranged for discharging slag, the slag discharging space is larger, and the stirring blade is arranged for pressurizing soil, discharging and discharging slag with higher efficiency.

Description

Cutting cutter head of hybrid rectangular pipe jacking machine

Technical Field

The invention relates to the field of rectangular cutting cutter heads of push bench, in particular to a cutting cutter head of a hybrid rectangular push bench.

Background

As a tunnel excavation equipment commonly used, its kind and specification have a lot of, the pipe jacking machine generally divide into the hand formula according to theory of operation, the extrusion formula, semi-mechanical type, still can divide into circular cross section pipe jacking machine and rectangular cross section pipe jacking machine according to excavating cross section's shape, wherein the rectangular cross section pipe jacking machine has comparatively extensive application in subway tunnel excavation, however traditional rectangular pipe jacking machine roughly divide into two types according to the blade disc, one type is that a blade disc structure is mostly eccentric rotation or planet rotation, another type is that a plurality of blade discs make up excavates, nevertheless any type all has the structure complicacy, excavate the relatively poor problem of effect.

Disclosure of Invention

The present invention has been made in view of the above problems, and it is an object of the present invention to simplify a structure by performing a divisional excavation by cutting sand at a rectangular edge of a rectangular cross section by repeating a linear movement of a rotary cutter and excavating the sand in a central area by rotating a circular main cutter, thereby solving the problems of a complicated structure, a high failure rate, and stability of the conventional entire excavation, and to achieve the above objects by the following technical means:

a cutting cutter head of a hybrid rectangular pipe jacking machine comprises a main cutter body, wherein a cutter rest is sleeved on the rear side of the main cutter body, the cutter rest comprises a bearing plate, and a support body is arranged on the outer side of the bearing plate; moving notches are sequentially formed in four edge surfaces of the pressure bearing plate along the circumferential direction, and auxiliary cutter bodies are arranged in the moving notches in a sliding connection mode; a transmission gear ring is movably arranged on the outer side of the cylindrical boss arranged on the rear side of the bearing plate; the rear side of the transmission gear ring is connected with a driving motor in a meshing manner, and the driving motor is fixedly connected with the cylindrical boss; the rear end of the cylindrical boss is provided with a partition board which is matched with the support body.

Preferably, the auxiliary cutter body comprises a cross-shaped bulge, and the cross-shaped bulge is connected with the moving notch in a sliding manner; the left end of the cross-shaped bulge is provided with a sliding tool rest, the sliding tool rest and the cross-shaped bulge are internally provided with a rotary cutter shaft, and the front end and the rear end of the rotary cutter shaft are respectively and fixedly connected with a rotary cutter and a chain wheel; a transmission chain is arranged outside the chain wheel, a driving wheel is arranged outside the transmission chain, and a driving rod is arranged on the rear end face of the driving wheel; the inner side of the sliding tool rest is fixedly connected with a rack; a large gear ring arranged at the front end of the transmission gear ring is meshed and connected with the rack; and a small gear ring arranged at the rear end of the transmission gear ring is meshed with the driving motor.

Preferably, a fixing boss is arranged on the periphery of the front end face of the partition plate, a through hole is formed in the fixing boss, and the rear end of the driving rod penetrates through the through hole to be movably connected with the partition plate.

Preferably, the middle part of the bearing plate is provided with a mounting hole, and the main cutter body is sleeved in the mounting hole; the main cutter body comprises a supporting sleeve, the supporting sleeve is arranged inside the mounting hole, a slag discharging port is formed inside the supporting sleeve, a spiral blade is arranged inside the slag discharging port, the front end of the supporting sleeve is fixedly connected with a stirring blade, and the front end of the stirring blade is fixedly connected with a main cutter head; the middle of the front end of the main cutter disc is provided with a leading cutter, and the periphery of the front end of the main cutter disc is provided with cutters.

The invention has the beneficial effects that:

1. because the main cutter body is arranged in front of the auxiliary cutter body, the main cutter body firstly excavates a circular cross section and then excavates a square edge by the auxiliary cutter body, and the preceding excavation of the main cutter body creates better conditions for the subsequent excavation of the square edge, so that the subsequent excavation of the square edge becomes easier and faster;

2. the rotary cutter on the auxiliary cutter body can rotate and move simultaneously through gear ring and gear transmission, the structure is simple, the stability is high, square edge excavation is carried out through the rotation and movement modes, and the effect is better;

3. arrange the middle sediment of arranging, arrange the sediment space bigger, set up stirring vane and give earth pressurization and discharge, arrange sediment efficiency higher.

Drawings

FIG. 1 is an exploded view of the present invention.

Fig. 2 is a schematic view of the tool holder of the present invention.

Fig. 3 is a schematic structural view of the auxiliary cutter body of the invention.

Fig. 4 is a schematic view of the transmission structure of the present invention.

Fig. 5 is a schematic structural diagram of the main blade body structure of the present invention.

Fig. 6 is an axial sectional view of the main blade body structure of the present invention.

Fig. 7 and 8 are schematic views of the working state of the present invention.

Description of the drawings:

100. a main blade body; 101. a main cutter head; 101a, a cutter; 101b, a leading knife; 102. a support sleeve; 102a, stirring blades; 102b, helical blades; 103. a slag discharge port; 110. a tool holder; 111. a support body; 112. a bearing plate; 112a, a moving notch; 112b, mounting holes; 112c, a cylindrical boss; 120. an auxiliary cutter body; 121. sliding the tool holder; 121a, a cross-shaped projection; 122. rotating the cutter shaft; 123. rotating a cutter; 124. a rack; 125. a sprocket; 126. a drive chain; 127. a drive wheel; 128. a drive rod; 130. a transmission gear ring; 131. a large gear ring; 132. a small gear ring; 140. a partition plate; 141. fixing the boss; 141a, a through hole; 150. the motor is driven.

Detailed Description

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are easily implemented by those having ordinary skill in the art to which the present invention pertains, however, the present invention may be implemented in various forms, and thus, the present invention is not limited to the embodiments described below, and in addition, components not connected to the present invention will be omitted from the drawings for more clear description of the present invention.

As shown in fig. 1-6, a cutting cutter head of a hybrid rectangular pipe jacking machine comprises a main cutter body 100, a cutter holder 110, an auxiliary cutter body 120, a transmission gear ring 130, a partition plate 140 and a driving motor 150;

the tool rest 110 is a square structure and comprises a support body 111 and a bearing plate 112, the support body 111 is sleeved on the side surface of the bearing plate 112 to play a role of accommodating and protecting parts arranged in the support body, four side surfaces of the bearing plate 112 are provided with moving notches 112a which are sequentially arranged along the circumferential direction, the moving notches 112a are cross-shaped notches, the left end and the right end of each moving notch completely penetrate through the front end surface and the rear end surface of the bearing plate 112, the bearing plate 112 is also provided with a cylindrical boss 112c, and a mounting hole 112b is formed in the cylindrical boss 112c and penetrates through the front end surface of the bearing plate 112;

the auxiliary cutter body 120 is composed of a sliding cutter frame 121, a rotary cutter shaft 122, a rotary cutter 123, a rack 124, a chain wheel 125, a transmission chain 126 and a driving wheel 127, a cross-shaped protrusion 121a is arranged on the sliding cutter frame 121, the auxiliary cutter body 120 can be matched with a moving notch 112a on the pressure bearing plate 112 through the cross-shaped protrusion 121a on the sliding cutter frame 121, so that the auxiliary cutter body 120 can move on the surface of the pressure bearing plate 112 along the direction of the moving notch 112a, the rack 124 is arranged on the lower end face of the sliding cutter frame 121, the rack 124 can drive the sliding cutter frame 121 to move, 3 rotary cutter shafts 122 are rotatably arranged on the sliding cutter frame 121, the rotary cutter 123 is fixed at one end of each rotary cutter shaft 122, the rotary cutter 123 can dig sandy soil, the chain wheel 125 is arranged at the other end of the rotary cutter shaft 122, the 3 rotary cutter shafts 122 can be movably connected together through the transmission chain 126 to realize synchronous rotation, the driving wheel 127 is arranged between two adjacent chain wheels 125, the driving wheel 126 can press the transmission chain 126 and can drive the transmission chain 126 to rotate the other chain 125 together, and the transmission chain 126 can still be ensured when the sliding cutter frame 127 moves left and right;

the circumferential surface of the transmission gear ring 130 is provided with a large gear ring 131 and a small gear ring 132, the transmission gear ring 130 is rotatably mounted on the cylindrical boss 112c, the large gear ring 131 is meshed with the racks 124 on each auxiliary cutter body 120, the small gear ring 132 is meshed and connected with the driving motor 150 fixed on the cylindrical boss 112c, when the driving motor 150 rotates, all the auxiliary cutter bodies 120 can move towards the same circumferential direction through the meshing of the transmission gear ring 130 and the racks 124, so as to avoid collision between the adjacent auxiliary cutter bodies 120;

the partition plate 140 is of a square plate structure, is sleeved on the cylindrical boss 112c on the pressure bearing plate 112, and the front end face of the partition plate is attached to the rear end face of the support body 111 to form a closed space so as to accommodate parts for protecting the space inside the closed space, the front end face of the partition plate 140 is provided with four fixing bosses 141, a through hole 141a is formed in each fixing boss 141, one end of the driving rod 128 is connected with the driving wheel 127, and the other end of the driving rod 128 can penetrate through the through hole 141a to play a role in positioning the driving rod 128;

the main cutter body 100 is composed of a main cutter head 101 and a support sleeve 102, and is rotatably sleeved in a mounting hole 112b on a cutter frame 110, a slag discharge port 103 is formed in the support sleeve 102, a spiral blade 102b is fixed on the inner wall of the slag discharge port 103, four stirring blades 102a which are obliquely arranged relative to the rear end face of the main cutter head 101 are arranged at the front end of the support sleeve 102, when the support sleeve 102 rotates, the stirring blades 102a can stir falling soil and provide backward force to the soil, so that the soil generates pressure on a pressure bearing plate 112, the soil is forced to enter from the slag discharge port 103, and the soil is sent out under the rotating action of the spiral blade 102b, the main cutter head 101 is fixed on the support sleeve 102, and cutters 101a and a leading cutter 101b are uniformly arranged along the circumference, and when the main cutter head 101 rotates, the cutters 101a and the leading cutter 101b can cut the soil.

The working principle of the invention is as follows:

when excavating soil, a motor drives (not shown in the figure) the supporting sleeve 102 and the four driving rods 128 to rotate so as to drive the main cutterhead 101 and the rotating knives 123 to rotate, when the main cutterhead 101 rotates, the cutting knives 101a and the leading knives 101b on the main cutterhead 101 are aligned with the soil in front, the excavating section is a circular section, when the rotating knives 123 rotate, the sliding knife rests 121 on the rotating knives are driven by the driving motor 150 to repeatedly move along the moving notches 112a on the bearing plate 112 towards the same circumferential direction, so that the soil outside the circumference of the circular section is excavated to form a rectangular section, as shown in fig. 7-8, when excavating, the pipe jacking machine sprays water (not shown in the figure) to the section at the same time, the soil cut by the rotating knives 123 and the main cutterhead 101 is mixed with water, when the supporting sleeve 102 rotates, the stirring blades 102a stir the fallen soil, and give backward force to the soil, so that the soil generates pressure on the bearing plate 112, the soil is forced to enter from the slag discharge port 103, and the soil is discharged by the rotation of the spiral blades 102 b.

Claims

1. The utility model provides a hybrid rectangle pipe push bench cutting blade disc, includes main cutter body (100), its characterized in that: a tool rest (110) is sleeved on the rear side of the main tool body (100), the tool rest (110) comprises a bearing plate (112), and a support body (111) is arranged on the outer side of the bearing plate (112); four edge surfaces of the pressure bearing plate (112) are sequentially provided with moving notches (112 a) along the circumferential direction, and an auxiliary cutter body (120) is arranged in the moving notches (112 a) in a sliding manner; a transmission gear ring (130) is movably arranged on the outer side of a cylindrical boss (112 c) arranged on the rear side of the pressure bearing plate (112); the rear side of the transmission gear ring (130) is connected with a driving motor (150) in a meshing manner, and the driving motor (150) is fixedly connected with the cylindrical boss (112 c); the rear end of the cylindrical boss (112 c) is provided with a partition plate (140), and the partition plate (140) is matched with the support body (111);

the auxiliary cutter body (120) comprises a cross-shaped protrusion (121 a), and the cross-shaped protrusion (121 a) is connected with the moving notch (112 a) in a sliding mode; a sliding tool rest (121) is arranged at the left end of the cross-shaped protrusion (121 a), a rotary cutter shaft (122) is arranged inside the sliding tool rest (121) and the cross-shaped protrusion (121 a), and a rotary cutter (123) and a chain wheel (125) are fixedly connected to the front end and the rear end of the rotary cutter shaft (122) respectively; a transmission chain (126) is arranged on the outer side of the chain wheel (125), a driving wheel (127) is arranged on the outer side of the transmission chain (126), and a driving rod (128) is arranged on the rear end face of the driving wheel (127); a rack (124) is fixedly connected to the inner side of the sliding tool rest (121); a large gear ring (131) arranged at the front end of the transmission gear ring (130) is meshed and connected with the rack (124); and a small gear ring (132) arranged at the rear end of the transmission gear ring (130) is in meshed connection with a driving motor (150).

2. The cutting cutter head of a hybrid rectangular push bench of claim 1, wherein: the periphery of the front end face of the partition plate (140) is provided with a fixing boss (141), a through hole (141 a) is formed in the fixing boss (141), and the rear end of the driving rod (128) penetrates through the through hole (141 a) to be movably connected with the partition plate (140).

3. The cutting impeller of hybrid rectangular push bench of claim 1, wherein: a mounting hole (112 b) is formed in the middle of the pressure bearing plate (112), and the main cutter body (100) is sleeved in the mounting hole (112 b); the main cutter body (100) comprises a supporting sleeve (102), the supporting sleeve (102) is arranged inside a mounting hole (112 b), a slag discharge port (103) is formed inside the supporting sleeve (102), a spiral blade (102 b) is arranged inside the slag discharge port (103), the front end of the supporting sleeve (102) is fixedly connected with a stirring blade (102 a), and the front end of the stirring blade (102 a) is fixedly connected with a main cutter head (101); the middle of the front end of the main cutter head (101) is provided with a leading cutter (101 b), and the periphery of the front end of the main cutter head (101) is provided with cutters (101 a).