Material guiding mechanism of orbital welding machine

Abstract

The utility model discloses rail welding machine material guide mechanism belongs to rail welding equipment technical field, and this mechanism includes the body, the support plate of liftable installation on the body and the carrier roller of installation on the support plate, and the limit mechanism passes through motor drive bidirectional screw rod, and the linkage transmission block, slider and fixed frame of bidirectional screw rod are linked in drive, thereby drive both sides's synchronous movement of gyro wheel, realize to the automatic centering of rail clamping, and this mechanism still includes the air cylinder for driving the support plate to lift, and the antiskid component of positioning through magnetic attraction mounting block, and the rubber plate and antiskid groove on this antiskid component can effectively prevent the longitudinal slip of rail. The utility model discloses through the cooperation of above -mentioned structure, realized to the high accuracy automatic centering of rail, stable spacing and reliable antiskid, and the material guide efficiency and subsequent fusion quality have been improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of track welding equipment technology, and in particular to the material guiding mechanism of a track welding machine. Background Technology

[0002] Rail transit is an important component of the modern transportation system. To ensure the safe and smooth operation of trains, regular maintenance and replacement of rails are necessary. During track laying or repair, it is often necessary to connect the ends of two rail sections by welding to form a continuous long rail line. The rail welding machine is a key piece of equipment for completing this process.

[0003] Before welding, a crucial step is to precisely guide and transport the rails to be welded to the welding machine's working position; this process is completed by the material guiding mechanism. The performance of the material guiding mechanism directly determines the alignment accuracy of the rail end faces, and alignment accuracy is a prerequisite for ensuring the final welding quality.

[0004] Existing rail welding machines typically employ simple structures for lateral rail positioning and limiting, such as manually adjustable stops or single-sided positioning rollers. This approach has significant drawbacks: manual adjustment is not only inefficient and labor-intensive, but its accuracy also relies heavily on the operator's experience, making it difficult to ensure balanced clamping forces on both sides and precise centering of the rail relative to the welding centerline. During the material guiding process, uneven lateral forces or inaccurate positioning can easily cause rail misalignment, severely impacting welding quality, potentially leading to welding defects and safety hazards.

[0005] Therefore, this utility model proposes a material guiding mechanism for a track welding machine to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a guide mechanism for a track welding machine, which aims to improve the problems of low accuracy and insufficient anti-slip stability of the existing track welding guide mechanism when limiting and centering the track.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a guide mechanism for a track welding machine, comprising: a machine body, a support plate that is vertically mounted on the machine body, and a roller that is rotatably mounted on the top of the support plate; the guide mechanism for the track welding machine further comprises a limiting mechanism.

[0008] The limiting mechanism includes a mounting frame fixedly connected to the machine body, a motor mounted on the mounting frame, and a bidirectional screw drivingly connected to the output end of the motor;

[0009] The bidirectional screw is threaded with a transmission block, and a slider is slidably connected to the mounting bracket. The transmission block abuts against and drives the slider to slide along the mounting bracket. A fixed bracket is fixedly connected to the slider, and a roller is rotatably connected to the fixed bracket. The motor drives the bidirectional screw to rotate, thereby linking the roller to synchronously clamp and center the track.

[0010] Preferably, the system also includes a cylinder, the cylinder body of which is fixed to the machine body, and the end of the piston rod of which is fixedly connected to the bottom of the support plate for driving the support plate to rise and fall.

[0011] Preferably, it also includes an anti-slip component, which includes a magnetic mounting block that can be adsorbed onto the body. The magnetic mounting block has a dovetail groove, and a sliding plate is slidably fitted in the dovetail groove. A rubber plate is fixed to the top of the sliding plate.

[0012] Preferably, the upper surface of the rubber sheet is provided with anti-slip grooves.

[0013] Preferably, the bidirectional screw includes a left-hand threaded section and a right-hand threaded section with opposite directions of rotation, and two transmission blocks are symmetrically arranged, with the two transmission blocks respectively threaded into the left-hand threaded section and the right-hand threaded section.

[0014] Preferably, two sets of the limiting mechanism are symmetrically arranged, located on both sides of the length direction of the roller.

[0015] Preferably, it also includes an electrode assembly, which is mounted on the machine body and located above the idler roller.

[0016] Preferably, it also includes a guide mounting sleeve, which is fixedly installed on one side of the machine body.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model solves the problems of inaccurate lateral positioning and difficulty in centering adjustment during track material guiding in the prior art by setting a limiting mechanism that uses a motor-driven bidirectional screw to synchronously clamp the track with rollers on both sides. It achieves the effect of high-precision automatic centering and stable limiting of the track, effectively ensuring the alignment accuracy of subsequent welding.

[0019] 2. This utility model solves the problem of longitudinal slippage caused by insufficient friction during the transport process, which leads to positioning failure, by setting an anti-slip component with magnetic mounting blocks and rubber plates with anti-slip grooves on the surface. It achieves the effect of increasing the friction at the bottom of the track and preventing it from slipping. At the same time, the magnetic mounting blocks make the component flexible and convenient to install, enhancing the stability and adaptability of the device. Attached Figure Description

[0020] Figure 1 This is a perspective view of the material guiding mechanism of the track welding machine proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of one side of the material guiding mechanism of the track welding machine proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the limiting mechanism of the material guiding mechanism of the track welding machine proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the rollers of the material guiding mechanism of the track welding machine proposed in this utility model;

[0024] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0025] Legend:

[0026] 1. Machine body; 2. Electrode assembly; 3. Guide mounting sleeve; 4. Cylinder; 5. Support plate; 6. Idler roller; 7. Limiting mechanism; 701. Mounting frame; 702. Motor; 703. Bidirectional screw; 704. Transmission block; 705. Slider; 706. Fixing frame; 707. Roller; 8. Anti-slip assembly; 801. Sliding plate; 802. Rubber plate; 803. Anti-slip groove; 804. Dovetail groove; 805. Magnetic mounting block. Detailed Implementation

[0027] 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.

[0028] Reference Figures 1-5 An embodiment of this utility model provides a material guiding mechanism for a track welding machine, including a machine body 1, which serves as the mounting base for the entire mechanism. A support plate 5 is vertically mounted on the machine body 1, and a roller 6 is rotatably mounted on the top of the support plate 5. The roller 6 is used to support the track to be guided and enable it to roll and convey along the material guiding direction.

[0029] It also includes a limiting mechanism 7 for lateral clamping and centering of the track. Specifically, the limiting mechanism 7 includes a mounting frame 701 fixedly connected to the body 1. A motor 702, which serves as a power source, is mounted on the mounting frame 701. A bidirectional screw 703 is driven to the output end of the motor 702. A transmission block 704 is threadedly engaged on the bidirectional screw 703. A slider 705 is also slidably connected to the mounting frame 701. The transmission block 704 abuts against the slider 705 and drives the slider 705 to slide along the guide rail of the mounting frame 701. A fixing frame 706 is fixedly connected to the slider 705. A roller 707 that directly contacts the side of the track is rotatably connected to the fixing frame 706. By starting the motor 702 to drive the bidirectional screw 703 to rotate, the lateral position of the roller 707 can be adjusted through the linkage of the transmission block 704, the slider 705, and the fixing frame 706.

[0030] To achieve precise synchronous centering adjustment, the bidirectional screw 703 includes a left-hand threaded section and a right-hand threaded section with opposite directions of rotation, and two transmission blocks 704 are symmetrically arranged. The two transmission blocks 704 are threadedly engaged with the left-hand threaded section and the right-hand threaded section, respectively. Thus, when the bidirectional screw 703 rotates, the two transmission blocks 704 and the rollers 707 linked with them can move synchronously towards or away from each other, thereby stably clamping the track in the center position. Furthermore, in order to form a stable double-sided limit, the limit mechanism 7 is symmetrically arranged in two sets, located on both sides of the length direction of the roller 6, to ensure the stability of clamping.

[0031] To achieve the lifting function of the support plate 5, the guide mechanism of the track welding machine also includes a cylinder 4. The cylinder body of the cylinder 4 is fixed on the machine body 1, and the end of the piston rod of the cylinder 4 is fixedly connected to the bottom of the support plate 5. By controlling the extension and retraction of the cylinder 4, the support plate 5 together with the roller 6 installed on the support plate 5 can be driven to move up and down, thereby precisely adjusting the track to the preset guide height.

[0032] To further enhance the stability of the track during the material guiding process and prevent longitudinal slippage, the material guiding mechanism of the track welding machine also includes an anti-slip component 8. The anti-slip component 8 includes a magnetic mounting block 805, the bottom of which has a built-in permanent magnet or electromagnet, allowing it to be magnetically mounted on the machine body 1 or other ferromagnetic surfaces at the work site. This achieves flexible arrangement and quick fixing of the anti-slip component 8. The magnetic mounting block 805 has a dovetail groove 804 extending along its length, within which a sliding plate 801 is slidably fitted. Both sides form dovetail slider structures that match the dovetail groove 804 to adapt to the track at different positions. A rubber plate 802 is fixed on the top of the sliding plate 801. The rubber plate 802 is made of a material with a high coefficient of friction. The upper surface of the rubber plate 802 is also provided with an anti-slip groove 803. The anti-slip groove 803 is a plurality of grooves extending along the sliding direction of the sliding plate 801. Through the combined action of the rubber plate 802 and the anti-slip groove 803, the friction with the bottom surface of the track is increased, which effectively prevents the track from slipping when subjected to longitudinal thrust and ensures the positioning accuracy of the subsequent welding process.

[0033] In addition, the guide mechanism of the rail welding machine also includes an electrode assembly 2 installed on the machine body 1 and located above the roller 6. The electrode assembly 2 is used to perform welding operations on the rail after the guide positioning is completed. At the same time, a guide mounting sleeve 3 is also fixedly installed on one side of the machine body 1. The guide mounting sleeve 3 provides auxiliary guidance and fixation for the installation of the mechanism and the docking with other equipment.

[0034] To achieve efficient and synchronous centering and clamping, the structure of the bidirectional screw 703 in the limiting mechanism 7 is crucial. Specifically, the main body of the bidirectional screw 703 is machined with a left-hand thread and a right-hand thread, forming a left-hand thread segment and a right-hand thread segment. Two transmission blocks 704 are symmetrically arranged, each with an internal thread that matches the left-hand thread segment and the right-hand thread segment, respectively. This ensures that when the bidirectional screw 703 rotates in one direction, the two transmission blocks 704 will move synchronously towards or away from each other at the same speed.

[0035] To achieve stable bilateral clamping of the track, specifically, two sets of limiting mechanisms 7 are symmetrically arranged, located on both sides of the length of the roller 6. That is, a limiting mechanism consisting of a motor 702, a bidirectional screw 703, a transmission block 704, a slider 705, a fixing frame 706, and a roller 707 is set on one side of the roller 6, and the same limiting mechanism is set on the other side of the roller 6. The motors 702 of the two limiting mechanisms can be controlled synchronously, so that the rollers 707 on both sides can simultaneously apply clamping force to the track to prevent the track from lateral deflection or tilting.

[0036] To enhance the fit and friction effect between the anti-slip component 8 and the track, the shape of the anti-slip groove 803 on the rubber plate 802 can be further optimized. Specifically, the anti-slip groove 803 can be designed as a plurality of parallel V-shaped or rectangular grooves extending along the sliding direction of the sliding plate 801, and can also form a certain embedding effect between the track and the rubber plate 802, further improving the ability to resist longitudinal sliding.

[0037] To ensure the stability and ease of installation of the anti-slip component 8, high-strength neodymium iron boron permanent magnets are evenly arranged inside the magnetic mounting block 805, enabling it to generate a sufficiently large attraction force to firmly adhere to the machine body 1 or the steel ground without the need for additional bolts or clamps for fixation.

[0038] Working principle: When it is necessary to guide and position the track, firstly, according to the height of the track, the cylinder 4 is controlled to move. The piston rod of the cylinder 4 extends or retracts, driving the support plate 5 and the roller 6 to rise or fall to a suitable height. Then, the track is placed on the roller 6 and the rubber plate 802 of the anti-slip component 8. At this time, the anti-slip component 8 is firmly fixed to the machine body 1 by the magnetic force of the magnetic mounting block 805. The rubber plate 802 and the anti-slip groove 803 on its surface increase the friction with the bottom of the track, preventing the track from sliding back and forth.

[0039] Next, the motor 702 of the limit mechanism 7 is started. The motor 702 drives the bidirectional screw 703 to rotate. Since the bidirectional screw 703 is equipped with both left-hand threaded sections and right-hand threaded sections, and is respectively matched with transmission blocks 704, the rotation of the bidirectional screw 703 will cause the two transmission blocks 704 to move synchronously towards each other. The transmission blocks 704 then drive their respective corresponding sliders 705 to slide on the mounting frame 701. The sliders 705 drive the fixed frame 706 to move, so that the two rollers 707 installed on the fixed frame 706 move from both sides of the track towards the center line until the track is smoothly clamped and automatically centered. The rolling contact method of the rollers 707 makes the lateral friction force during the subsequent track conveying process extremely small.

[0040] Through the coordinated operation of the cylinder 4, the limiting mechanism 7, and the anti-slip component 8, the track is precisely and stably controlled in terms of vertical height, horizontal center position, and longitudinal movement, providing a reliable positioning basis for the subsequent high-quality welding operation of the electrode assembly 2.

Claims

1. The material guiding mechanism of the rail welding machine, including: The body (1) and the support plate (5) are mounted on the body (1) in a liftable manner; A roller (6) is rotatably mounted on the top of the support plate (5); Its characteristic is that it further includes: The limiting mechanism (7) includes: a mounting frame (701), which is fixedly connected to the body (1). A motor (702) is mounted on the mounting frame (701). A bidirectional screw (703) is driven to the output end of the motor (702). A transmission block (704) is threaded onto the bidirectional screw (703). A slider (705) is also slidably connected to the mounting frame (701). The transmission block (704) abuts against and drives the slider (705) to slide along the mounting frame (701). A fixing frame (706) is fixedly connected to the slider (705). A roller (707) is rotatably connected to the fixing frame (706).

2. The material guiding mechanism of the track welding machine according to claim 1, characterized in that: It also includes a cylinder (4), the cylinder body of which is fixed to the machine body (1), and the end of the piston rod of the cylinder (4) is fixedly connected to the bottom of the support plate (5).

3. The material guiding mechanism of the track welding machine according to claim 1, characterized in that: It also includes an anti-slip component (8), which includes a magnetic mounting block (805) that can be magnetically mounted on the body (1). The magnetic mounting block (805) has a dovetail groove (804) and a sliding plate (801) that slides within the dovetail groove (804). A rubber plate (802) is fixed to the top of the sliding plate (801).

4. The material guiding mechanism of the track welding machine according to claim 3, characterized in that: The upper surface of the rubber sheet (802) is provided with anti-slip grooves (803).

5. The material guiding mechanism of the track welding machine according to claim 1, characterized in that: The bidirectional screw (703) includes a left-hand threaded section and a right-hand threaded section with opposite directions of rotation, and two transmission blocks (704) are symmetrically arranged, with the two transmission blocks (704) threadedly engaged with the left-hand threaded section and the right-hand threaded section respectively.

6. The rail welder material guide mechanism of claim 1, wherein: The limiting mechanism (7) is symmetrically arranged in two sets, located on both sides of the length direction of the idler roller (6).

7. The material guiding mechanism of the track welding machine according to claim 1, characterized in that: It also includes an electrode assembly (2), which is mounted on the body (1) and located above the idler roller (6).

8. The rail welder material guide mechanism of claim 1, wherein: It also includes a guide mounting sleeve (3), which is fixedly installed on one side of the body (1).

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