Cutting box for TRD construction method

Abstract

A cutting box for a TRD construction method comprises a longitudinally-arranged cutting box body. A cutting driving gear and a cutting driven gear are arranged at the two longitudinal ends of the cutting box body correspondingly, and a chain is arranged on the outer edge of the cutting box body. A grouting main pipe for conveying cement paste and a stirring cutter driving shaft are arranged in the cutting box in the longitudinal direction, a stirring cutter connected with the stirring cutter driving shaft is arranged in the middle of a cutting box body, and the stirring cutter driving shaft is in transmission connection with a cutting driving gear through a transmission device. And a uniform cement wall is formed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of building construction, especially relates to a cutting box for TRD method. BACKGROUND

[0002] TRD method is an important construction method in underground foundation pit support engineering, its principle is that the cutting box with cutting knife holder and cutter head reaching the design depth is inserted into the ground, the underground soil is cut and mixed through the cutting cutter head, the cement slurry meeting the design requirements is injected into the ground through the grouting pipe to fully mix with the original ground soil to form the underground continuous wall construction process with equal thickness. Its main construction steps are that the cutting box is inserted into the ground, then horizontal transverse movement is carried out, the soil is driven to rotate up and down through the cutting chain saw, and the cement slurry is injected into the ground through the grouting pipe to form the wall with equal thickness.

[0003] Its characteristics are that the wall forming speed is fast, the wall is continuous, the uniformity is good, the waterproof performance is good, and the thickness is consistent. It is mainly applied to various house buildings, underground engineering, revetment engineering, foundation reinforcement of dam, water seepage prevention and the like.

[0004] The application with the publication number 207727641U discloses a cutting box for super-deep TRD method, the cement slurry backflow is prevented through the increase of the anti-backflow grouting pipe, and the efficiency of the cement slurry pouring is increased. However, the cement slurry is mixed with the saturated soil body through the cutter row during the construction of the cutting box, only simple multiple mixing is carried out, not forced mixing, and the cement slurry liquid cannot be uniformly distributed to the wall depth range. SUMMARY

[0005] In view of the above problems, the utility model provides a cutting box for TRD method, and the design concept is that the mixing of the cement slurry and the soil body is carried out through the axial rotation of the mixing blade in the middle part of the cutting box, and the uniformity of the poured wall is improved.

[0006] A cutting box for TRD method comprises a longitudinally arranged cutting box body 14; one end of the cutting box body 14 is provided with a cutting driving gear 13, and the other end is provided with a cutting driven gear 25; the cutting box body 14 is connected with an external structure through a connecting piece 12 at the end where the cutting driving gear 13 is located;

[0007] A mixing blade driving shaft 31 and a grouting main pipe 42 are arranged in the cutting box body 14 along the longitudinal direction; the mixing blade driving shaft 31 is connected with the cutting driving gear 13 through a transmission mechanism 6; the grouting main pipe 42 is provided with a grouting hole 41 for injecting the cement slurry, and the grouting main pipe 42 is connected with a grouting nozzle 44 for spraying the cement slurry through a plurality of grouting branch pipes 43; a mixing blade fixing frame 34 is arranged in the middle part of the cutting box body 14, a mixing blade 33 is arranged in the mixing blade fixing frame 34, the mixing blade 33 is connected with the mixing blade driving shaft 31 and can rotate axially along the mixing blade driving shaft 31;

[0008] The chain 22 is sleeved with the cutting box body 14 on the transverse two sides, and is connected with the cutting driving gear 13 and the cutting driven gear 25; the vertical cutter holder 23 is arranged on the chain 22 in the vertical direction, and the vertical cutter head 24 is arranged on the vertical cutter holder 23.

[0009] More specifically, the transmission mechanism 6 comprises a gear shaft 64, the driving main gear 61 is sleeved on the gear shaft 64, and the driving main gear 61 is connected with the cutting driving gear 13; the driving driven gear 63 is arranged at the end of the gear shaft 64, and the driving driven gear 63 is connected with the stirring blade driving shaft 31 through the stirring blade driven wheel 62.

[0010] More specifically, the stirring blade 33 is provided with the bearing 32 at the longitudinal two ends, the bearing 32 at one end is connected with the stirring blade driving shaft 31, the force transmission shaft connecting female head 311 is sleeved on the stirring blade driving shaft 31, and the bearing 32 at the other end is connected with the stirring blade driving shaft 31, and the force transmission shaft connecting male head 312 is sleeved on the stirring blade driving shaft 31.

[0011] More specifically, the cutting box connecting head 53 with the reinforcing structure is arranged in the cutting box body 14.

[0012] When the utility model works, the external staff inserts the cutting box body 14 into the cement-soil continuous wall groove, injects the cement slurry through the grouting nozzle 44, simultaneously, the transmission mechanism 6 connected with the external power system drives the stirring blade driving shaft 31 and the cutting driving gear 13, the chain 22 cuts the soil body, and the stirring blade 33 fully stirs the cement slurry and the original foundation soil body, and finally forms the cement wall body.

[0013] The utility model has the advantages that the cement slurry and the soil body can be fully stirred, and the uniformity of the cement wall of the TRD method is improved. ACCURACY OF DRAWINGS

[0014] Figure 1 It is a structure view of the cutting box for the TRD method.

[0015] Figure 2 It is a structure view of the transmission system.

[0016] Figure 3 It is a structure view of the cutting box.

[0017] Figure 4 It is a structure view of the force transmission shaft connecting female head.

[0018] Figure 5 It is a structure view of the force transmission shaft connecting male head.

[0019] Figure 6 It is a middle part structure view of the cutting body.

[0020] Figure 7 is the end structure diagram of the cutting main body of the utility model.

[0021] Figure 8 is the transverse section view of the cutting main body of the utility model.

[0022] Figure 9 is the transverse section view of the grouting hole of the cutting main body of the utility model.

[0023] Figure 10 is the structure diagram of the chain of the utility model. DETAILED DESCRIPTION

[0024] The specific implementation of the embodiments of the utility model will be described in detail below with reference to the drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiments of the utility model, and is not used to limit the embodiments of the utility model.

[0025] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0026] In addition, the terms "first" and "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0027] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature can be directly above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature can be directly below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.

[0029] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0030] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0031] A cutting box for TRD method comprises a longitudinally arranged cutting box body 14; the cutting box body 14 is provided with a cutting driving gear 13 at one end in the longitudinal direction and a cutting driven gear 25 at the other end; the cutting box body 14 is connected to an external structure at the end where the cutting driving gear 13 is located through a connecting piece 12;

[0032] A stirring blade driving shaft 31 and a grouting main pipe 42 are arranged inside the cutting box body 14 in the longitudinal direction; the stirring blade driving shaft 31 is connected to the cutting driving gear 13 through a transmission mechanism 6; the grouting main pipe 42 is provided with a grouting hole 41 for injecting cement slurry, and the grouting main pipe 42 is connected to a grouting nozzle 44 for spraying cement slurry through a plurality of grouting branch pipes 43; a stirring blade fixing frame 34 is arranged in the middle of the cutting box body 14, and a stirring blade 33 is arranged in the stirring blade fixing frame 34, the stirring blade 33 is connected to the stirring blade driving shaft 31 and can rotate axially along the stirring blade driving shaft 31;

[0033] Chain 22 is arranged on both sides of the cutting box body 14 in the transverse direction, and the chain 22 is connected to the cutting driving gear 13 and the cutting driven gear 25; a vertical knife holder 23 is arranged on the chain 22, and a vertical knife head 24 is arranged on the vertical knife holder 23.

[0034] More specifically, the transmission mechanism 6 comprises a gear shaft 64, a driving main gear 61 is sleeved on the gear shaft 64, the driving main gear 61 is connected with the cutting driving gear 13; a driving driven gear 63 is arranged at the end of the gear shaft 64, and the driving driven gear 63 is connected with the stirring blade driving shaft 31 through the stirring blade driven gear 62.

[0035] More specifically, the stirring blade 33 is provided with bearings 32 at two longitudinal ends, a force transmission shaft connecting female head 311 is sleeved on the stirring blade driving shaft 31 connected with the bearing 32 at one end, and a force transmission shaft connecting male head 312 is sleeved on the stirring blade driving shaft 31 connected with the bearing 32 at the other end.

[0036] More specifically, the cutting box connecting head 53 with the reinforcing structure is arranged in the cutting box body 14.

[0037] When the utility model works, the external staff inserts the cutting box body 14 into the cement-soil continuous wall groove, injects the cement slurry through the grouting nozzle 44, simultaneously, the transmission mechanism 6 connected with the external power system drives the stirring blade driving shaft 31 and the cutting driving gear 13, the chain 22 cuts the soil body, and the stirring blade 33 fully stirs the cement slurry and the original foundation soil body, and finally forms the cement wall body.

[0038] The utility model has the advantages that the cement slurry and the soil body can be fully stirred, and the uniformity of the cement wall of the TRD method is improved.

[0039] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary, and cannot be understood as the limitation of the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model.

Claims

1. A cutting box for a TRD method, characterized by: It includes a longitudinally arranged cutting box body (14); The cutting box body (14) has a cutting drive gear (13) at one end and a cutting driven gear (25) at the other end; the cutting box body (14) is connected to the external structure at the end where the cutting drive gear (13) is located via a connector (12); The cutting box body (14) is provided with a stirring blade drive shaft (31) and a grouting main pipe (42) along the longitudinal direction inside; the stirring blade drive shaft (31) is connected to the cutting drive gear (13) through the transmission mechanism (6); the grouting main pipe (42) is provided with a grouting hole (41) for injecting cement slurry, and the grouting main pipe (42) is connected to a grouting nozzle (44) for spraying cement slurry through several grouting branch pipes (43); the middle part of the cutting box body (14) is provided with a stirring blade fixing frame (34), the stirring blade fixing frame (34) contains a stirring blade (33), the stirring blade (33) is connected to the stirring blade drive shaft (31), and can rotate axially along the stirring blade drive shaft (31); Chains (22) are fitted on both sides of the cutting box body (14). The chains (22) connect the cutting drive gear (13) and the cutting driven gear (25). A vertical blade holder (23) is threaded through the chain (22), and a vertical blade head (24) is provided on the vertical blade holder (23).

2. A cutting box for a TRD method according to claim 1, characterized in that: The transmission mechanism (6) includes a gear shaft (64), on which a drive main gear (61) is sleeved, and the drive main gear (61) is connected to the cutting drive gear (13); the end of the gear shaft (64) is provided with a drive slave gear (63), and the drive slave gear (63) is connected to the stirring blade drive shaft (31) through the stirring blade driven wheel (62).

3. A cutting box for a TRD method according to claim 1, characterized in that: The stirring blade (33) has bearings (32) at both ends in the longitudinal direction. The stirring blade drive shaft (31) connected to the bearing (32) at one end is fitted with a female head (311) for transmitting force shaft connection, and the stirring blade drive shaft (31) connected to the bearing (32) at the other end is fitted with a male head (312) for transmitting force shaft connection.

4. The cutting box for the TRD method according to claim 1, wherein: The main body of the cutting box (14) is equipped with a cutting box connector (53) with a reinforced structure.

Images