Simple CFG pile head cutting device

Abstract

The utility model discloses a simple CFG pile head cut-off device which comprises a rope saw, a rope saw wheel driving the rope saw to rotate, a speed reduction motor used for driving the rope saw wheel to rotate and a support, the support is fixed to the ground, more than two guide rails are loaded through the support, a sliding table structure is installed between the two guide rails, and the sliding table structure is connected with the rope saw wheel. A screw rod is rotationally installed on the inner side of the support, the sliding table structure is matched with the screw rod, a servo motor for driving the screw rod to rotate is installed on the outer side of the support, and the gear motor is installed through the sliding table structure; the device can realize quick cutting, the section is smooth, and the operation is safe.

Description

Technical Field

[0001] This utility model relates to a simple CFG pile head cutting device. Background Technology

[0002] CFG piles (cement fly ash gravel piles) are a composite foundation technology widely used in foundation treatment. They significantly improve the bearing capacity of the foundation by having the pile and the soil between them share the load. The construction process typically includes drilling, pouring the CFG mixture, compaction, and pile head cutting. Among these steps, pile head cutting is crucial for ensuring the pile top elevation matches the design, directly impacting subsequent subbase construction and the overall quality of the foundation.

[0003] 2. Traditional pile head cutting methods and their drawbacks

[0004] Currently, the removal of CFG pile heads mainly relies on manual chiseling or mechanical crushing, which presents the following technical challenges:

[0005] Inefficient: Manually using pneumatic picks or steel chisels to chisel away sections is time-consuming and labor-intensive, making it difficult to meet the progress requirements of large-scale projects.

[0006] Insufficient precision: Manual operation can easily lead to deviations in the pile top elevation or unevenness in the cross-section, requiring secondary adjustments and increasing costs.

[0007] Safety hazards: Concrete fragments flying during the breaking process may injure construction workers, and mechanical vibration may cause hidden damage to the pile body.

[0008] Based on the above problems, we designed a simple CFG pile head cutting device that can achieve rapid cutting, produce a flat cross-section, and is safe to operate. Utility Model Content

[0009] The technical problem to be solved by this utility model is to provide a simple CFG pile head cutting device that can achieve rapid cutting, produce a flat cross-section, and is safe to operate.

[0010] To solve the above problems, the present invention adopts the following technical solution:

[0011] A simple CFG pile head cutting device includes a wire saw, a wire saw wheel that drives the wire saw to rotate, and a geared motor for driving the wire saw wheel to rotate. It also includes a support frame fixed to the ground, on which two or more guide rails are mounted. A slide structure is installed between two of the guide rails. A screw is rotatably mounted on the inner side of the support frame, and the slide structure cooperates with the screw. A servo motor that drives the screw to rotate is mounted on the outer side of the support frame, and the geared motor is mounted via the slide structure.

[0012] Preferably, the bracket has symmetrical legs arranged on the front and back of the outer side. A vertical through-hole is machined on the top of the legs. A grounding bolt is fitted through the threaded hole. A handle is provided on the outer wall of the grounding bolt near the top. The lower end of the grounding bolt is a spiked end. In use, the spiked end is inserted into the ground and a grounding plate is threadedly connected to the grounding bolt.

[0013] Preferably, the slide structure includes a platform, a linear bearing that mates with the guide rail is installed at the bottom of the platform, and a nut sleeve that mates with the screw is installed at the top of the platform. Two bearing seats are symmetrically arranged at the front and rear of the top of the platform. A first linear bearing is installed laterally through the bearing seats. A slide rod is mated to the first linear bearing. A side plate is installed between the right ends of the two slide rods. The height of the side plate is higher than the height of the platform. A limit tube is installed at the left end of the slide rod. A shear bolt is mated between the limit tube and the slide rod. A vertical plate is welded to the platform. The slide rod passes through the vertical plate. A spring is sleeved on the slide rod. The spring acts between the limit tube and the vertical plate. A platform is fixed at the top of the side plate. The reduction motor is installed at the top of the platform.

[0014] Preferably, a vertical frame is mounted on the platform, and an emergency stop switch is installed on the end of the vertical frame facing the side plate. The emergency stop switch is electrically connected to the geared motor. When the wire saw is not loaded, the spring is in a relaxed state. At this time, the side plate presses the emergency stop switch, and the geared motor is de-energized. When the wire saw is loaded and the platform moves to the left, the wire saw is tensioned, and the side plate is pulled away from the emergency stop switch. At this time, the servo motor is energized.

[0015] Preferably, the bracket is an aluminum alloy bracket.

[0016] The beneficial effects of this utility model are:

[0017] One advantage is that this device uses a wire saw to cut, which has high cutting efficiency and produces a smoother cross-section.

[0018] Secondly, the wire saw produces only dust during the cutting process and does not generate large pieces of explosive fragments, making the operation safer.

[0019] Thirdly, this device can maintain tension, ensuring that the wire saw can effectively cut the pile, and this tension also helps to improve cutting efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a top view of the present invention;

[0022] Figure 2 This is the front view of the grounding bolt;

[0023] Figure 3 This is a schematic diagram of the slide structure;

[0024] Figure 4 This is a side view of the platform. Detailed Implementation

[0025] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0026] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0027] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] See Figure 1 The illustrated simple CFG pile head cutting device includes a wire saw 1, a wire saw wheel 2 that drives the wire saw 1 to rotate, and a reduction motor 3 for driving the wire saw wheel 2 to rotate. It also includes a bracket 4, which is fixed to the ground. Two or more guide rails 5 are mounted on the bracket 4, and a slide structure 6 is installed between the two guide rails 5. A screw 7 is rotatably mounted on the inner side of the bracket 4, and the slide structure 6 cooperates with the screw 7. A servo motor 8 that drives the screw 7 to rotate is mounted on the outer side of the bracket 4, and the reduction motor 3 is mounted via the slide structure 6.

[0031] The operation of the above device is as follows:

[0032] First, place the wire saw 1 on the CFG pile and determine the position to be cut. Then adjust the position of the bracket 4 so that the wire saw 1 is in a tensioned state.

[0033] The servo motor 8 drives the screw 7 to rotate, and the displacement of the slide structure 6 further tensions the wire saw 1. The rotation of the reduction motor 3 drives the wire saw 1 to rotate. During the rotation, the feed rate of the servo motor 8 is maintained, and the slide structure 6 is moved slowly to maintain sufficient tension in the wire saw 1 and improve cutting efficiency.

[0034] See Figure 1 and Figure 2 As shown, support legs 441 are symmetrically arranged on the outer side of the bracket 4. A vertical through-hole is machined on the top of the support leg 441. A grounding bolt 442 is fitted through the threaded hole. A handle 443 is provided on the outer wall of the grounding bolt 442 near the top. The lower end of the grounding bolt 442 is a spike end 444. In use, the spike end 444 is inserted into the ground, and a grounding plate 499 is threadedly connected to the grounding bolt 442.

[0035] In the above technical solution, the rotation of the grounding bolt 442 can achieve the leveling of the bracket 4, and the spike end 444 can be screwed into the ground to increase the stability of the bracket 4.

[0036] The grounding plate 499 can limit the insertion depth of the grounding bolt 442.

[0037] See Figure 3 and Figure 4 As shown, the slide structure 6 includes a platform 61. A linear bearing 62, which mates with the guide rail 5, and a nut sleeve 63, which mates with the screw 7, are installed at the bottom of the platform 61. Two bearing seats 64 are symmetrically arranged at the front and rear of the top of the platform 61. A first linear bearing 65 is horizontally installed through the bearing seats 64, and a slide rod 66 mates with the first linear bearing 65. A side plate 67 is installed between the right ends of the two slide rods 66, and the height of the side plate 67 is higher than that of the platform 61. The height is such that a limiting tube 69 is installed at the left end of the slide rod 66, and a shear bolt 610 is fitted between the limiting tube 69 and the slide rod 66. A vertical plate 699 is welded on the platform 61, and the slide rod 66 passes through the vertical plate 699. A spring 611 is sleeved on the slide rod 66, and the spring 611 acts between the limiting tube 69 and the vertical plate 699. A platform 612 is fixed on the top of the side plate 67, and the reduction motor 3 is installed on the top of the platform 612.

[0038] In the above technical solution, after the wire saw 1 is loaded, the slide table 61 moves to the left so that the wire saw 1 has sufficient contact force with the CFG pile. At the same time, the compression of the spring 611 provides a safety compression margin to prevent the wire saw 1 from breaking due to excessive tightness.

[0039] In the above technical solution, the servo motor drives the screw to rotate, which in turn drives the platform 61 to slide. The sliding of the platform 61 drives the reduction motor 3 to move, which in turn pulls the wire saw 1. During the rotation of the wire saw 1, it cuts the CFG pile. The moving platform 61 pulls the wire saw 1 to maintain sufficient tension in the wire saw 1 so as to complete the rapid cutting.

[0040] See Figure 3 As shown, a vertical frame 661 is installed on the platform 61. An emergency stop switch 662 is installed on the end of the vertical frame 661 facing the side plate 67. The emergency stop switch 662 is electrically connected to the geared motor 3. When the wire saw 1 is not loaded, the spring 611 is in a relaxed state. At this time, the side plate 67 presses the emergency stop switch 662, and the geared motor 3 is de-energized. When the wire saw 1 is loaded and the platform 61 moves to the left, the wire saw 1 is tensioned, and the side plate 67 is pulled away from the emergency stop switch 662. At this time, the servo motor 8 is energized.

[0041] The above technical solution mainly serves to protect the wire saw 1. Only when the wire saw 1 is tensioned will the side plate be pulled open, separating the side plate from the emergency stop switch 662. Only then can the reduction motor 3 drive the wire saw wheel 2 to rotate.

[0042] When the CFG stake is cut, the load on the wire saw 1 disappears, and after the side plate rebounds, the emergency stop switch 662 is pressed, causing the geared motor 3 to lose power supply.

[0043] The bracket 4 is an aluminum alloy bracket.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0046] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0047] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0048] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A simple CFG pile head cutting device, comprising a wire saw (1), a wire saw wheel (2) for driving the wire saw (1) to rotate, and a reduction motor (3) for driving the wire saw wheel (2) to rotate, characterized in that: It also includes a bracket (4), which is fixed to the ground. Two or more guide rails (5) are mounted on the bracket (4). A slide structure (6) is installed between the two guide rails (5). A screw (7) is rotatably installed on the inner side of the bracket (4). The slide structure (6) cooperates with the screw (7). A servo motor (8) that drives the screw (7) to rotate is installed on the outer side of the bracket (4). The geared motor (3) is installed through the slide structure (6).

2. The simplified CFG pile head cutting device according to claim 1, characterized in that: Support legs (441) are symmetrically arranged on the outer side of the bracket (4). A vertical through-hole is machined on the top of the support leg (441). A grounding bolt (442) is fitted through the threaded hole. A handle (443) is provided near the top of the outer wall of the grounding bolt (442). The lower end of the grounding bolt (442) is a spike end (444). When in use, the spike end (444) is inserted into the ground and a grounding plate (499) is threadedly connected through the grounding bolt (442).

3. The simplified CFG pile head cutting device according to claim 1, characterized in that: The slide structure (6) includes a platform (61), on the bottom of which is installed a linear bearing (62) that cooperates with the guide rail (5) and a nut sleeve (63) that cooperates with the screw (7). Two bearing seats (64) are symmetrically arranged at the front and rear of the top of the platform (61). A first linear bearing (65) is installed laterally through the bearing seats (64). A slide rod (66) is cooperated with the first linear bearing (65). A side plate (67) is installed between the right ends of the two slide rods (66). The height of the side plate (67) is higher than the height of the platform (61). A limiting tube (69) is installed at the left end of the slide rod (66), and a shear bolt (610) is fitted between the limiting tube (69) and the slide rod (66). A vertical plate (699) is welded on the platform (61), and the slide rod (66) passes through the vertical plate (699). A spring (611) is sleeved on the slide rod (66), and the spring (611) acts between the limiting tube (69) and the vertical plate (699). A platform (612) is fixed on the top of the side plate (67), and the reduction motor (3) is installed on the top of the platform (612).

4. The simplified CFG pile head cutting device according to claim 3, characterized in that: A vertical frame (661) is installed on the platform (61). An emergency stop switch (662) is installed on the end of the vertical frame (661) facing the side plate (67). The emergency stop switch (662) is electrically connected to the geared motor (3). When the wire saw (1) is not loaded, the spring (611) is in a relaxed state. At this time, the side plate (67) presses the emergency stop switch (662), and the geared motor (3) is de-energized. When the wire saw (1) is loaded and the platform (61) moves to the left, the wire saw (1) is tensioned, and the side plate (67) is pulled away from the emergency stop switch (662). At this time, the servo motor (8) is energized.

5. The simplified CFG pile head cutting device according to claim 2, characterized in that: The bracket (4) is an aluminum alloy bracket.

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