Block type gear and rack driven pipe pushing machine
Through the coordinated working of the moving caliper unit and the fixed caliper unit of the block-type gear rack-and-rail drive pipe pusher, the moving cart driven by hydraulic motors is used to walk on the base track, effectively promoting the long-distance pipeline in complex environments such as narrow spaces and inclined slopes, solving the problem that traditional pipe pushers are difficult to push the long-distance pipeline, and improving construction efficiency and safety.
Patent Information
- Application Number
- CN202311734875.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-15
- Publication Date
- 2025-06-17
AI Technical Summary
In complex environments such as narrow spaces and slopes, traditional pipe pushers are difficult to effectively promote long-distance pipelines, resulting in high construction difficulties and many safety hazards.
The pipe pusher is driven by a block type gear rack and rack. Through the coordinated work of the moving caliper unit and the fixed plier unit, the walking car driven by a hydraulic motor is used to walk on the base track, achieving multi-path short-distance transportation of the pipeline, and fixing the pipeline through the fixed plier unit on the inclined road surface to prevent the pipe from slipping.
In complex environments such as narrow spaces and inclined slopes, effective propulsion of long-distance pipelines is achieved, construction efficiency and safety are improved, and failure rate is reduced.
Smart Images
Figure CN120159990A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of pipe pushers, and particularly to a segmented gear-rack driven pipe pusher. Background Art
[0002] Conventional pipe pushers on the market use a single clamping unit to perform the pipe propulsion operation. This type of pipe pusher is mainly used for pipe propulsion operations on the bottom surface of the horizontal plane. However, in some special sections such as tunnels and culverts, due to the narrow space, the space for the clamping unit to move with the trolley is limited, and a single clamping unit cannot transport the pipe over a long distance in the narrow space, making the construction difficulty of long-distance pipeline installation large. In addition, in such working areas, there is a certain slope on the ground. When the slope is too long, a single clamping unit cannot continuously transport the pipe load, which is too large and prone to failure.
[0003] There are adverse factors such as small working space and restricted operations. Coupled with the high frequency of equipment transfer, there are relatively large potential safety and quality hazards in the construction. Pipeline laying is a key process. Therefore, the efficiency, convenience, and safety of pipeline laying directly have a great impact on the entire construction. Summary of the Invention
[0004] In view of the above-mentioned defects existing in the prior art, a segmented gear-rack driven pipe pusher is provided, which can meet the transportation operation of long-distance pipelines in a narrow space and can also realize the transportation of long-distance pipelines on an inclined slope.
[0005] The technical solution adopted by the present invention to solve the above technical problems is as follows:
[0006] The segmented gear-rack driven pipe pusher includes a control unit, a hydraulic power station, and a pipeline laying and conveying device. The hydraulic power station provides power for the pipeline conveying unit, and the control unit controls the operations of the hydraulic power station and the pipeline conveying device.
[0007] It is characterized in that: the pipeline conveying device includes a base track laid on the ground, a fixed clamping unit fixed on the base track, a walking trolley driven by a hydraulic motor on the base track, and a movable clamping unit fixedly connected to the walking trolley; a set of jaws is provided in both the movable clamping unit and the fixed clamping unit, and the set of jaws forms a pipe clamping sleeve; the size of the pipe clamping sleeve formed by the set of jaws is adjusted according to the size of the clamped pipe.
[0008] According to the above technical solution, a rack is provided on the base guide rail, a gear driven by a hydraulic motor is provided on the walking trolley, the gear meshes with the rack, and the walking trolley is driven to move on the base track by the hydraulic motor; rollers are provided between the walking trolley and the base track.
[0009] According to the above technical solution, the base guide rail is composed of at least two guide rails, and a rack parallel to the length direction of the guide rail is arranged on the outer side surface of each guide rail; the axis of the gear is arranged perpendicular to the guide rail, the hydraulic motor is arranged on the upper part of the walking trolley and is connected to the gear through the walking trolley.
[0010] According to the above technical solution, both the fixed clamp unit and the movable clamp unit are composed of a bracket body, a plurality of jaws arranged on the bracket body, and a hydraulic cylinder propulsion cylinder connected between the jaws and the bracket body. The jaws adopt an arc-shaped structure with the same radius, and the centers of the pipe clamping sleeves formed by the movable clamp unit and the fixed clamp unit are on the same straight line; the hydraulic cylinder propulsion cylinder is fixed between the outer arc surface of the jaw and the bracket body, and the direction of the hydraulic propulsion cylinder intersects with the straight line. The propulsion distances of all the hydraulic propulsion cylinders of the fixed clamp unit are synchronously equal, and the propulsion distances of all the hydraulic propulsion cylinders of the movable clamp unit are synchronously equal.
[0011] According to the above technical solution, the bracket body is divided into upper and lower parts, and both parts are semi-circular structures; the lower part of the bracket body is fixed to the base track or the walking trolley in a detachable connection manner, and both sides of the upper part of the bracket body are fixed to both sides of the lower part of the bracket body through a pin connection manner.
[0012] According to the above technical solution, an arc-shaped anti-wear layer is provided on the inner arc surface of the jaw, and the anti-wear layer is rubber with patterns.
[0013] According to the above technical solution, the hydraulic power station adopts an independent hydraulic station, the independent hydraulic station is arranged near the base guide rail mechanism, and the control device is arranged on the fixed clamp unit; the oil inlet and outlet of the control device are connected to the hydraulic station, and the oil outlet pipe and the return pipe of the control device are both connected to the hydraulic cylinder propulsion cylinder and the hydraulic motor; the hydraulic oil pipe connecting the hydraulic motor is arranged on the side of the guide rail.
[0014] According to the above technical solution, two travel switches are arranged on the base track, and the travel switches are connected to the control device; the area between the two travel switches is the travel area of the walking trolley.
[0015] According to the above technical solution, guide wheels are arranged on both sides of the movable clamp unit and the fixed clamp unit, and the guide wheels are circumferentially arranged at intervals on the periphery of the pipe clamping sleeve.
[0016] The present invention has the following beneficial effects:
[0017] In complex working environments such as tunnels or culverts, there are some areas with small working spaces and restricted operations; or in other environments, there are long slopes on the ground. In order to lay pipelines in the above environments, in this embodiment, a split movable clamp unit and a fixed clamp unit are provided. When the movable clamp unit clamps the pipeline, the fixed clamp unit loosens the pipeline, and the walking trolley moves along the base track towards the direction close to the fixed clamp unit to realize the advancement of the pipeline; when the walking trolley runs near the fixed clamp unit, the fixed clamp unit clamps the pipeline, and then the movable clamp unit loosens the pipeline, and the walking trolley moves along the base track away from the fixed clamp unit. When the walking trolley returns to the initial position, the movable clamp unit clamps the pipeline, and the fixed clamp unit loosens the pipeline. By repeating the above process, the walking trolley moves back and forth between the fixed clamp unit and the initial position to realize the advancement operation of the pipeline.
[0018] Based on the above measures, by using the movable clamp unit and the fixed clamp unit, the operation of transporting the pipeline over a single long distance by a single clamping unit in the prior art is divided into multiple short-distance pipeline transportation operations; enabling this device to also carry out the advancement operation of long-distance pipelines in a narrow and restricted space. In addition, when advancing a long-distance pipeline on an inclined road surface, after the movable clamp unit transports a certain distance, the pipeline is fixed on the base track by the fixed clamp unit to prevent the pipeline from slipping, reducing the load on the walking trolley and playing a role in reducing the failure rate. This device not only improves the laying efficiency of long-distance pipelines but also enhances the convenience and safety of construction, better serving the construction of long-distance pipelines. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is the front view of the pipeline laying device provided by the embodiment of the present invention;
[0020] Figure 2 is the top view of the pipeline laying device provided by the embodiment of the present invention;
[0021] Figure 3 is the right view of the pipeline laying device provided by the embodiment of the present invention;
[0022] In the figure, 1, base track; 2, fixed clamp unit; 3, walking trolley; 4, movable clamp unit; 5, clamped pipeline; 6, rack; 7, hydraulic motor; 8, roller; 9, support body; 10, jaw; 11, hydraulic cylinder propulsion cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] The present invention will be described in detail below with reference to the drawings and embodiments.
[0024] Refer to Figures 1 to 3 as shown, the sectionalized gear-rack driven pipe pusher provided by the present invention.
[0025] Embodiment 1
[0026] It includes a control unit, a hydraulic power station, and a pipeline laying device. The hydraulic power station provides power for the pipeline conveying unit, and the control unit controls the operations of the hydraulic power station and the pipeline conveying device.
[0027] The pipeline conveying device includes a base track 1 laid on the ground, a fixed clamp unit 2 fixed on the base track, a walking trolley 3 driven by a hydraulic motor on the base track, and a movable clamp unit 4 fixedly connected to the walking trolley; a slip chuck group is provided in both the movable clamp unit and the fixed clamp unit, and the slip chuck group constitutes a pipeline clamping sleeve; the size of the pipeline clamping sleeve formed by the slip chuck group is adjusted according to the size of the pipeline 5 to be clamped.
[0028] In complex working environments such as tunnels or culverts, there are some areas with small working spaces and restricted operations; or in other environments, there are long slopes on the ground. In order to carry out the pipeline laying operation in the above environments, this embodiment sets a split movable clamp unit and fixed clamp unit. When the movable clamp unit clamps the pipeline, the fixed clamp unit releases the pipeline, and the walking trolley walks on the base track towards the direction close to the fixed clamp unit to realize the advancement of the pipeline; when the walking trolley runs near the fixed clamp unit, the fixed clamp unit clamps the pipeline, and then the movable clamp unit releases the pipeline, and the walking trolley walks on the base track towards the direction away from the fixed clamp unit. When the walking trolley returns to the initial position, the movable clamp unit clamps the pipeline, the fixed clamp unit releases the pipeline, and the above process is repeated. The walking trolley moves repeatedly between the fixed clamp unit and the initial position to realize the advancement operation of the pipeline.
[0029] Based on the above measures, by using the movable clamp unit and the fixed clamp unit, the operation of transporting the pipeline in a single one-way long distance by a single clamping unit in the prior art is divided into multiple short-distance pipeline transportation operations; enabling this device to carry out the advancement operation of long-distance pipelines even in narrow restricted spaces. In addition, when advancing a long-distance pipeline on an inclined road surface, after the movable clamp unit transports a certain distance, the pipeline is fixed on the base track by the fixed clamp unit to prevent the pipeline from slipping, reducing the load on the walking trolley and playing a role in reducing the failure rate. This device not only improves the laying efficiency of long-distance pipelines but also improves the convenience and safety of construction, and better serves the construction of long-distance pipelines.
[0030] Embodiment 2
[0031] The structure and principle of Embodiment 2 are similar to those of Embodiment 1, with the difference being that a preferred structural form for driving the walking trolley to move on the base track is provided. A rack 6 is provided on the base guide rail, and a gear driven by a hydraulic motor 7 is provided on the walking trolley. The gear meshes with the rack, and the walking trolley is driven by the hydraulic motor to move on the base track. A roller 8 is provided between the walking trolley and the base track. In this embodiment, based on the drive of the hydraulic motor, through the transmission mode of the gear and rack, the reciprocating linear movement of the walking trolley on the base guide rail is realized, so as to meet the continuous propulsion operation of the pipeline. The design of the roller is used to reduce the friction between the walking trolley and the base track.
[0032] In Embodiment 2, preferably, the base guide rail is composed of at least two guide rails, and a rack parallel to the length direction of the guide rail is provided on the outer side of each guide rail. The axis of the gear is arranged perpendicular to the guide rail, and the hydraulic motor is arranged above the walking trolley and connected to the gear through the walking trolley.
[0033] Embodiment 3
[0034] The structure and principle of Embodiment 3 are similar to those of Embodiment 1, with the difference being that a preferred structural form of the movable clamp unit and the fixed clamp unit is provided.
[0035] Specifically, both the fixed clamp unit and the movable clamp unit are composed of a bracket body 9, a plurality of slips 10 arranged on the bracket body, and a hydraulic cylinder propulsion cylinder 11 connected between the slips and the bracket body. The slips adopt an arc-shaped structure with the same radius, and the centers of the pipeline clamping sleeves formed by the movable clamp unit and the fixed clamp unit are on the same straight line. The hydraulic cylinder propulsion cylinder is fixed between the outer arc surface of the slip and the bracket body, and the direction of the hydraulic propulsion cylinder intersects with the straight line. The propulsion distances of all the hydraulic propulsion cylinders of the fixed clamp unit are synchronously equal, and the propulsion distances of all the hydraulic propulsion cylinders of the movable clamp unit are synchronously equal.
[0036] In Embodiment 3, the bracket body is divided into upper and lower parts, both of which are semi-circular structures. The lower part of the bracket body is fixed to the base track or the walking trolley in a detachable connection manner, and both sides of the upper part of the bracket body are fixed to both sides of the lower part of the bracket body through pin shafts.
[0037] In Embodiment 3, an arc-shaped anti-wear layer is provided on the inner arc surface of the slip, and the anti-wear layer is rubber with patterns.
[0038] In Embodiments 1-3, preferably, the hydraulic power station adopts an independent hydraulic station, which is arranged near the base guide rail mechanism, and the control device is arranged on the fixed clamp unit. The oil inlet and outlet of the control device are connected to the hydraulic station, and the oil outlet pipe and return pipe of the control device are both connected to the hydraulic cylinder propulsion cylinder and the hydraulic motor. The hydraulic oil pipe connecting the hydraulic motor is arranged on the side of the guide rail.
[0039] Further, two travel switches are provided on the base rail, and the travel switches are connected to the control device; the area between the two travel switches is the travel area of the walking trolley.
[0040] In Embodiments 1-3, preferably, guide wheels are provided on both sides of the movable clamp unit and the fixed clamp unit, and the guide wheels are circumferentially arranged at intervals on the circumferential side of the pipe clamping sleeve. By providing the guide wheels, the running track of the pipe is limited.
[0041] The above are only the preferred embodiments of the present invention, and of course, the scope of the rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the protection scope of the present invention.
Claims
1. The segmented gear-rack driven pipe pusher comprises a control unit, a hydraulic power station, and a pipe laying and conveying device. The hydraulic power station provides power for the pipe conveying unit, and the control unit controls the operations of the hydraulic power station and the pipe conveying device; It is characterized in that: The pipeline conveying device includes a base track laid on the ground, a fixed clamp unit fixed on the base track, a traveling trolley driven by a hydraulic motor on the base track, and a moving clamp unit fixedly connected to the traveling trolley; a slip chuck group is provided in both the moving clamp unit and the fixed clamp unit, and the slip chuck group constitutes a pipeline clamping sleeve; the size of the pipeline clamping sleeve formed by the slip chuck group is adjusted according to the size of the pipeline to be clamped.
2. The segmented gear-rack driven pipe pusher according to claim 1, characterized in that: A rack is provided on the base guide rail, and a gear driven by a hydraulic motor is provided on the traveling trolley. The gear meshes with the rack, and the traveling trolley is driven by the hydraulic motor to travel on the base track; rollers are provided between the traveling trolley and the base track.
3. The segmented gear-rack driven pipe pusher according to claim 2, characterized in that: The base guide rail is composed of at least two guide rails, and a rack parallel to the length direction of the guide rail is provided on the outer side surface of each guide rail; the axis of the gear is arranged perpendicular to the guide rail, and the hydraulic motor is arranged on the upper part of the traveling trolley and is connected to the gear through the traveling trolley.
4. The segmented gear-rack driven pipe pusher according to claim 1, characterized in that: Both the fixed clamp unit and the moving clamp unit are composed of a support body, a plurality of slip chucks provided on the support body, and a hydraulic cylinder propulsion cylinder connected between the slip chuck and the support body. The slip chucks adopt an arc-shaped structure with the same radius, and the centers of the pipeline clamping sleeves formed by the moving clamp unit and the fixed clamp unit are on the same straight line; the hydraulic cylinder propulsion cylinder is fixed between the outer arc surface of the slip chuck and the support body, and the direction of the hydraulic propulsion cylinder intersects with the straight line. The propulsion distances of all the hydraulic propulsion cylinders of the fixed clamp unit are synchronously equal, and the propulsion distances of all the hydraulic propulsion cylinders of the moving clamp unit are synchronously equal.
5. The segmented gear-rack driven pipe pusher according to claim 4, characterized in that: The support body is divided into upper and lower parts, and both parts are semi-circular structures; the lower part of the support body is fixed on the base track or the traveling trolley in a detachable connection manner, and both sides of the upper part of the support body are fixed on both sides of the lower part of the support body through a pin connection method.
6. The segmented gear-rack driven pipe pusher according to claim 4, characterized in that: An arc-shaped anti-wear layer is provided on the inner arc surface of the slip chuck, and the anti-wear layer is rubber with patterns.
7. The segmented gear-rack driven pipe pusher according to claim 1, characterized in that: The hydraulic power station adopts an independent hydraulic station, and the independent hydraulic station is arranged near the base guide rail mechanism. The control device is arranged on the fixed clamp unit; the oil inlet and outlet of the control device are connected to the hydraulic station, and the oil outlet pipe and the return pipe of the control device are both connected to the hydraulic cylinder propulsion cylinder and the hydraulic motor; the hydraulic oil pipe connecting the hydraulic motor is arranged on the side of the guide rail.
8. The segmented gear-rack driven pipe pusher according to claim 7, characterized in that: Two travel switches are provided on the base track, and the travel switches are connected to the control device; the area between the two travel switches is the traveling area of the traveling trolley.
9. The segmented gear-rack driven pipe pusher according to claim 1, characterized in that: Guide wheels are provided on both sides of the moving clamp unit and the fixed clamp unit, and the guide wheels are circumferentially arranged at intervals on the periphery of the pipeline clamping sleeve.