Movable portable gantry milling machine in narrow height space

Abstract

The utility model discloses a movable portable gantry milling machine in narrow height space belongs to mechanical processing equipment technical field, including the gantry frame that is constituted by the body part and crossbeam, is equipped with milling device on the crossbeam, and the walking roller is rotatably connected to the bottom of body part, and the fixed bolt is equipped with on the body part, and the fixed bolt can be screwed down and extend to the end to lift the body part, make walking roller separate from the supporting surface, thereby with the equipment from the mobile state quick switching to the steady fixed state, the gantry milling machine still includes the feed drive mechanism that drives crossbeam and moves along the body part, and the translation mechanism that drives milling device and moves along the crossbeam. The utility model has solved the positioning time -consuming problem that the existing gantry milling machine moves deployment is difficult, has realized the portable movement and quick steady of equipment, can adapt to narrow space operation, has improved the field construction efficiency significantly.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing equipment technology, and in particular to a mobile and convenient gantry milling machine that can be used in a confined space. Background Technology

[0002] In fields such as energy and chemical engineering, shipbuilding, and heavy machinery, there is often a need for on-site repair or machining of large workpieces that are difficult to transport or critical surfaces of installed equipment. Gantry milling machines, due to their stable structure and large machining range, are ideal for completing such planar machining tasks.

[0003] Traditional gantry milling machines used for on-site machining are typically very bulky in order to ensure sufficient machining rigidity and precision. When it is necessary to move such equipment on the work site, such as from the machining area to another machining area of ​​the same workpiece, it is often necessary to use external lifting equipment such as overhead cranes and forklifts, or to have multiple workers working together with jacks, rollers and other tools to complete the task. The entire relocation and repositioning process is very cumbersome, time-consuming and labor-intensive, which seriously affects the overall construction efficiency.

[0004] This problem is particularly prominent in certain space-constrained special working conditions, such as inside ship cabins, in factories filled with equipment, or in mezzanine spaces with low-profile pipes, where external lifting equipment simply cannot enter or operate. In these situations, the bulky gantry milling machine becomes almost a "fixed" piece of equipment, and the enormous difficulty in moving and deploying it becomes a key bottleneck restricting the smooth progress of on-site processing, even making some necessary on-site processing operations impossible.

[0005] Existing technologies present an irreconcilable contradiction between the requirements of "high rigidity and stability" and "high-efficiency mobility" in on-site processing. Designers often sacrifice the convenience of equipment in order to ensure processing accuracy, resulting in existing solutions failing to adequately meet the dual requirements of rapid deployment and stable processing.

[0006] Therefore, this utility model proposes a mobile and convenient gantry milling machine for use in confined spaces to address the shortcomings of existing technologies. Utility Model Content

[0007] In view of the problems of existing gantry milling machines used for on-site processing, such as difficulties in moving and deploying, time-consuming and laborious positioning and adjustment, and especially the difficulty in balancing convenient movement and stable processing in narrow spaces, this utility model aims to provide a mobile and convenient gantry milling machine with an improved structure that can effectively solve the above problems in narrow height spaces.

[0008] This utility model provides a portable gantry milling machine for use in confined spaces, comprising a gantry frame consisting of a bed and a crossbeam spanning the bed, a milling device mounted on the crossbeam, a feed drive mechanism for driving the crossbeam to move along the length of the bed, a translation mechanism for driving the milling device to move along the length of the crossbeam, as well as traveling rollers and fixing bolts.

[0009] The traveling rollers are rotatably connected to the bottom of the bed section and are used to move the entire gantry milling machine. The fixing bolts are threaded through the bed section and are configured such that when tightened, their ends extend downward to lift the bed section, thereby causing the traveling rollers to detach from their support surface and securely fix the gantry milling machine.

[0010] Furthermore, the feed drive mechanism includes a motor fixed to the bed, a threaded rod driven to rotate by the motor, and a threaded block threaded to the threaded rod and fixedly connected to the crossbeam; the translation mechanism includes a motor fixed to the crossbeam, a threaded rod driven to rotate by the motor, and the milling device is connected to the threaded rod to achieve translation through threaded transmission.

[0011] Preferably, in order to provide stable guidance for the movement of the crossbeam, the bed body is provided with a sliding groove along its length, and the crossbeam is rotatably connected with a pulley that rolls with the sliding groove. This wheel-groove matching guidance method is not only simple in structure, but also has low rolling friction, ensuring the smoothness of the long-distance reciprocating motion of the crossbeam.

[0012] Preferably, in order to provide precise guidance for the translation of the milling device, a slide rail is fixedly provided on the crossbeam along its length, and a slider that slides with the slide rail is provided on the milling device. By adopting this high-precision linear guide pair, the cutting force generated during the milling process can be effectively resisted, ensuring the straightness and positioning accuracy of the milling device movement.

[0013] Preferably, in order to further improve the smoothness of the crossbeam movement and prevent it from deviating during movement, the feed drive mechanism includes two drive units arranged symmetrically on the left and right. Each drive unit consists of a motor, a threaded rod, and a threaded block. The two motors are configured to rotate synchronously and drive the two ends of the crossbeam to move at the same speed and displacement.

[0014] Preferably, the gantry milling machine also includes a pad plate disposed below the fixing bolt. When fixing the equipment, the end of the fixing bolt directly abuts against the top surface of the pad plate, distributing the concentrated load lifted by the equipment to a larger support area through the pad plate, which not only protects the ground or platform at the installation location, but also improves the stability of the fixing.

[0015] Preferably, the bed body consists of two parallel bed sections and end beams fixedly connected to both ends of the two bed sections. This structure together forms a robust rectangular base frame, providing reliable assurance for the rigidity of the entire device. At the same time, the structure is clear and facilitates modular manufacturing and assembly.

[0016] Preferably, based on the above-mentioned split bed structure, multiple traveling rollers are respectively rotatably installed at the bottom of the two end beams. This layout makes the center of gravity of the equipment stable when moving, pushes smoothly and effortlessly, and distributes the force more evenly, avoiding movement difficulties or frame deformation caused by excessive local force.

[0017] Preferably, to make the overall structure more compact, the second motor and the second threaded rod are both integrally mounted on one side of the crossbeam, and together with the milling device, they form a highly integrated integrated translation module. This modular design not only reduces the space occupied, but also makes installation, debugging and subsequent maintenance more convenient.

[0018] This utility model has the following beneficial effects: 1. This utility model solves the problems of difficult movement, time-consuming and labor-intensive installation and positioning, and reliance on lifting equipment of existing gantry milling machines used for on-site processing by setting traveling rollers at the bottom of the machine bed and threading fixing bolts through the machine bed to lift the entire machine bed so that the traveling rollers are suspended in the air. It achieves the technical effect of making the equipment easy to move by a single person, quickly switching to a stable processing state, and significantly improving on-site operation efficiency. 2. This utility model, by adopting a split bed and a low gantry frame structure, solves the problem that traditional gantry milling machines are bulky and cannot enter or adapt to special working conditions with limited height or narrow space. It achieves the technical effect of compact machine structure, easy disassembly and transportation, and greatly enhances the adaptability of equipment to complex field environments. 3. This utility model solves the problem of easy shaking and skew during the mobile processing of portable equipment by setting up dual-motor synchronous drive and wheel groove guide for the longitudinal movement of the crossbeam, and setting up a precision slide rail slider guide pair for the lateral movement of the milling device. This achieves the technical effect of ensuring smooth operation of the crossbeam and milling device, accurate guidance, and effectively improving the overall processing quality and stability. Attached Figure Description

[0019] Figure 1 This is a top view of a portable gantry milling machine designed for use in confined spaces, as proposed in this utility model. Figure 2 This is a perspective view of a portable gantry milling machine designed for use in confined spaces. Figure 3Right view of a partial structure of a portable gantry milling machine in a confined space according to this utility model; Figure 4 This is a partial structural exploded view of a portable gantry milling machine designed for use in confined spaces, as proposed in this utility model.

[0020] Legend: 1. Split bed; 2. End beam; 3. Crossbeam; 4. Milling device; 5. Traveling roller; 6. Fixing bolt; 7. Pad plate; 8. Feed drive mechanism; 801. Motor 1; 802. Threaded rod 1; 803. Threaded block; 804. Pulley; 805. Slide groove; 9. Translation mechanism; 901. Motor 2; 902. Threaded rod 2; 903. Slider; 904. Slide rail. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Please refer to Figures 1 to 4 This utility model provides a mobile and convenient gantry milling machine for use in confined spaces, which aims to solve the problems of existing gantry milling machines used in on-site machining being time-consuming and labor-intensive to move and reposition, dependent on external lifting equipment, and difficult to deploy in narrow working conditions with height restrictions.

[0023] like Figure 1 and Figure 2 As shown, a portable gantry milling machine for use in a confined space includes a gantry frame consisting of a bed 1 and a crossbeam 3. The bed 1 serves as the mounting base for the entire device, and the crossbeam 3 spans across the bed 1 to support and guide the movement of the milling device 4.

[0024] One aspect of this embodiment is its moving and fixing mechanism, which includes traveling rollers 5 and fixing bolts 6. The traveling rollers 5 are rotatably connected to the bottom of the bed body 1. In the non-working state, the entire gantry milling machine is supported on the ground or platform by the traveling rollers 5, making it easy for on-site construction personnel to push the equipment to the designated processing area by hand. The fixing bolts 6 are threaded through the bed body 1. After the equipment is in place, the fixing bolts 6 are tightened so that their ends extend downward and abut against the pad 7 below them. Continuing to tighten them will lift the entire bed body 1 until the traveling rollers 5 are completely detached from the support surface and suspended in the air. At this time, the entire gantry milling machine is firmly fixed in the working position by the fixing bolts 6 and the pad 7, ensuring rigidity and stability during the processing.

[0025] The motion function of the gantry milling machine is realized by the feed drive mechanism 8 and the translation mechanism 9. The feed drive mechanism 8 is used to drive the crossbeam 3 to reciprocate along the length direction of the bed body 1. Specifically, the feed drive mechanism 8 includes a motor 801 fixed to the bed body 1, a threaded rod 802 driven to rotate by the motor 801, and a threaded block 803 threadedly engaged with the threaded rod 802. The threaded block 803 is fixedly connected to the outer wall of the crossbeam 3. When the motor 801 is working, its rotational motion is converted into the linear motion of the crossbeam 3 through the transmission pair of the threaded rod 802 and the threaded block 803. In order to ensure the smoothness of the movement of the crossbeam 3 and the accuracy of the guidance, a slide groove 805 is provided on the bed body 1 along its length direction, and a pulley 804 is rotatably connected on the crossbeam 3. The pulley 804 rolls in the slide groove 805.

[0026] The translation mechanism 9 is used to drive the milling device 4 to reciprocate along the length of the crossbeam 3. Specifically, the translation mechanism 9 includes a second motor 901 fixed to the crossbeam 3 and a second threaded rod 902 driven to rotate by the second motor 901. The milling device 4 is connected to the second threaded rod 902 through threaded transmission. When the second motor 901 is working, its rotation drives the second threaded rod 902, thereby driving the milling device 4 to achieve transverse translation feed. In order to ensure the smoothness of the movement and the accuracy of the guidance of the milling device 4, a slide rail 904 is fixedly provided on the crossbeam 3 along its length, and a slider 903 is provided on the milling device 4 that slides in cooperation with the slide rail 904.

[0027] Please refer to Figure 1 , Figure 2 and Figure 4First, the guide structure between the bed body 1 and the crossbeam 3 will be described in detail. The bed body 1 consists of two parallel bed sections and end beams 2 fixedly connected to both ends of the bed sections, forming a rectangular base frame. On the inner sidewalls of the two bed sections of the bed body 1, a pair of parallel sliding grooves 805 are respectively opened along their length direction. Correspondingly, the bottom ends of the crossbeam 3 are respectively rotatably connected to pulleys 804 through bearings. In the assembled state, the pulleys 804 are rolled and accommodated inside the sliding grooves 805. This wheel-groove matching guide method provides stable and low-friction guide support for the longitudinal reciprocating motion of the crossbeam 3 driven by the feed drive mechanism 8.

[0028] Please refer to Figure 1 , Figure 3 and Figure 4 The guiding structure between the crossbeam 3 and the milling device 4 is described in detail below. A linear slide rail 904 is fixedly installed on the front side wall of the crossbeam 3 along its length. The slide rail 904 has a high-precision linear profile. A slider 903 that matches the slide rail 904 is fixedly connected to the back of the milling device 4. In the assembled state, the internal cavity of the slider 903 is precisely matched with the outer profile of the slide rail 904 and slides on the slide rail 904. This precision linear guide pair composed of the slider 903 and the slide rail 904 gives the milling device 4 extremely high positioning accuracy and anti-deflection ability when it moves laterally along the crossbeam 3 under the drive of the translation mechanism 9, thereby effectively ensuring the final machining quality.

[0029] In a preferred embodiment, in order to ensure the stability and anti-skewness capability of the crossbeam 3 during long-stroke movement, the feed drive mechanism 8 includes two drive units symmetrically arranged on the left and right sides. These two drive units act on both ends of the crossbeam 3 respectively. Each drive unit includes a motor 801, a threaded rod 802 and a threaded block 803. The two motors 801 are synchronized through a synchronous controller to drive the two ends of the crossbeam 3 to move at the same speed and displacement.

[0030] As another preferred embodiment, in order to provide a stable and wear-resistant support point when fixing the equipment and to protect the ground or platform where the equipment is installed, the gantry milling machine also includes an independent pad 7; the pad 7 is placed directly below the fixing bolt 6, and the end of the fixing bolt 6 directly abuts against the top surface of the pad 7 when tightened downwards, so that the force of lifting the equipment is distributed to a larger area through the pad 7.

[0031] In one specific structural design, to optimize the stability and ease of manufacturing of the frame, the bed body 1 consists of two parallel bed sections and end beams 2 fixedly connected to the two ends of the bed sections, forming a sturdy rectangular base frame. Based on this structure, multiple traveling rollers 5 are rotatably mounted on the bottom of the two end beams 2. This layout makes the force more even when the equipment moves, and the pushing is more stable.

[0032] Furthermore, in order to make the overall structure of the translation mechanism 9 more compact and easier to maintain, the motor 901 and the threaded rod 902 are both installed on one side of the crossbeam 3, and together with the slider 903 and the milling device 4, they form a highly integrated integrated translation module.

[0033] Working principle: When on-site processing is required, the entire gantry milling machine is first pushed by hand by the on-site personnel. The traveling rollers 5 at the bottom of the equipment are rotatably connected to the bottom of the bed body 1, allowing it to move smoothly to the predetermined working position next to the workpiece on the ground or platform. After the equipment is in place, the pad 7 is placed under the fixing bolts 6, and then the multiple fixing bolts 6 threaded through the bed body 1 are tightened. The ends of the bolts extend downward and abut against the pad 7. The continuous tightening force lifts the entire bed body 1 upward until all the traveling rollers 5 are completely detached from the support surface. Through this process, the equipment quickly switches from a convenient moving state to a high-rigidity stable processing state, solving the technical problem of rapid deployment and fixation in a confined space. During the machining process, when longitudinal feed is required, motor 801 of the feed drive mechanism 8 is activated. Motor 801 drives threaded rod 802 to rotate, and threaded block 803, which is threadedly engaged, drives the entire crossbeam 3 to move linearly along the length of the bed 1. During this process, pulley 804 on the crossbeam 3 rolls in the slide groove 805 of the bed 1, providing stable guidance. When transverse feed is required, motor 901 of the translation mechanism 9 is activated. Motor 901 drives threaded rod 902 to rotate, which in turn drives milling device 4, which is connected to threaded rod 902 via threaded transmission, to move linearly along the length of the crossbeam 3. During this process, slider 903 on milling device 4 slides precisely on slide rail 904 of crossbeam 3, providing precise transverse guidance. Through the coordinated control of feed drive mechanism 8 and translation mechanism 9, milling device 4 can be driven to achieve arbitrary trajectory movement in a two-dimensional plane, thereby performing precise milling machining on the workpiece.

Claims

1. A portable gantry milling machine for use in a confined space, comprising a gantry frame consisting of a bed (1) and a crossbeam (3) spanning the bed (1), the gantry milling machine further comprising a milling device (4) mounted on the crossbeam (3), a feed drive mechanism (8) for driving the crossbeam (3) to move along the length of the bed (1), and a translation mechanism (9) for driving the milling device (4) to move along the length of the crossbeam (3); Its features are, The gantry milling machine also includes traveling rollers (5) and fixing bolts (6); the traveling rollers (5) are rotatably connected to the bottom of the bed body (1) for moving the gantry milling machine; The fixing bolt (6) is threaded through the bed body (1) and is configured such that when tightened, its end extends downward to lift the bed body (1), thereby causing the traveling roller (5) to disengage from its support surface and securely fix the gantry milling machine. The feed drive mechanism (8) includes a motor (801) fixed to the bed body (1), a threaded rod (802) driven to rotate by the motor (801), and a threaded block (803) threadedly engaged with the threaded rod (802) and fixedly connected to the crossbeam (3). The translation mechanism (9) includes a second motor (901) fixed to the crossbeam (3) and a second threaded rod (902) driven to rotate by the second motor (901). The milling device (4) is connected to the second threaded rod (902) through threaded transmission to achieve translation.

2. The portable gantry milling machine for confined spaces according to claim 1, characterized in that, The bed body (1) has a sliding groove (805) along its length, and a pulley (804) is rotatably connected to the crossbeam (3). The pulley (804) rolls and engages in the sliding groove (805) to guide the movement of the crossbeam (3).

3. The movable and portable gantry milling machine for confined spaces according to claim 1, characterized in that, A slide rail (904) is fixedly provided on the crossbeam (3) along its length direction, and a slider (903) is provided on the milling device (4). The slider (903) slides in cooperation with the slide rail (904) to provide guidance for the translation of the milling device (4).

4. A portable gantry milling machine for confined spaces according to claim 1, characterized in that, The feed drive mechanism (8) includes two drive units arranged symmetrically on the left and right. Each drive unit includes the motor (801), the threaded rod (802) and the threaded block (803). The two motors (801) are configured to rotate synchronously to ensure that the crossbeam (3) moves smoothly.

5. A portable gantry milling machine for confined spaces according to claim 1, characterized in that, The gantry milling machine also includes a pad (7) disposed below the fixing bolt (6), the end of the fixing bolt (6) being configured to abut against the top surface of the pad (7) when tightened.

6. A portable gantry milling machine for confined spaces according to claim 1, characterized in that, The bed body (1) includes two parallel bed sections and end beams (2) that are fixedly connected to both ends of the two bed sections.

7. A portable gantry milling machine for confined spaces according to claim 6, characterized in that, The number of the walking rollers (5) is multiple, and they are rotatably installed on the bottom of the two end beams (2).

8. A portable gantry milling machine for confined spaces according to claim 1, characterized in that, The second motor (901) and the second threaded rod (902) are both integrally installed on one side of the crossbeam (3) and form an integrated translation module with the milling device (4).

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