Auxiliary welding seam polishing device

Abstract

The utility model relates to an auxiliary welding seam polishing device which comprises a moving trolley. And the grinding tool is movably installed on one side of the moving trolley through a movable mechanism, and the movable mechanism is adjusted to drive the grinding tool to be switched among the multiple to-be-ground welding seams. The welding seam polishing device is simple in overall structure and convenient to operate, an operator can move along a welding seam needing to be polished by operating the movable trolley, then the polishing tool polishes the corresponding welding seam, the operator stands in the working process, segmented reciprocating polishing is not needed, and the working efficiency is improved. The movable trolley can be pushed in the welding seam direction to achieve one-time polishing operation, the working efficiency is greatly improved, the labor amount is saved, and the working condition is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding equipment, and particularly relates to a weld seam auxiliary grinding device. Background Art

[0002] In the general assembly process of high-speed multiple units, for the pre-welding cleaning and post-welding grinding of the long straight weld seam inside the vehicle between the side wall and the bottom frame side beam, due to the limited operation space, construction workers need to work in a squatting position, and the grinding range does not exceed 1 meter. They need to move positions multiple times, which has problems such as high construction difficulty, low labor efficiency of personnel, and violation of ergonomic principles. In the process of pre-welding cleaning and post-welding grinding of long straight weld seams in the welding process of large components such as the ceiling and the side wall, the above problems also exist. Content of the Utility Model

[0003] The main technical problem to be solved by the utility model is to provide a weld seam auxiliary grinding device that can meet the auxiliary grinding operations under various working conditions, improve the operation efficiency of personnel, and improve the working conditions.

[0004] To solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0005] A weld seam auxiliary grinding device includes:

[0006] A mobile trolley;

[0007] A grinding tool, which is movably installed on one side of the mobile trolley through a movable mechanism, and the movable mechanism is adjusted to drive the grinding tool to switch between multiple weld seams to be ground.

[0008] Further, the movable mechanism adjusts the grinding tool to rotate 90° in the vertical direction, so that the grinding tool switches between a first weld seam and a second weld seam. The grinding surface of the grinding tool is parallel to the horizontal plane for grinding the first weld seam, and the grinding surface is perpendicular to the horizontal plane for grinding the second weld seam.

[0009] Further, the grinding tool is a pneumatic grinding machine.

[0010] Further, the movable mechanism includes a first arm, a second arm, and a third arm. One end of the first arm is fixedly connected to the mobile trolley, the other end of the first arm is rotatably connected to the second arm, the other end of the second arm is connected to the third arm, and the grinding tool is fixed by the third arm.

[0011] Further, the third arm is a clamp structure composed of two clamping arms. One end of the two clamping arms is rotatably connected to the second arm, the other ends of the clamping arms are fastened by bolts, and the grinding tool is clamped and fixed between the two clamping arms.

[0012] Further, a height adjustment assembly is installed on the mobile trolley, and the grinding tool is installed on the height adjustment assembly.

[0013] Further, the height adjustment assembly includes at least one guide rod extending in the vertical direction and a height adjustment rod sleeved on the guide rod. The bottom of the guide rod is installed on the mobile trolley. The height adjustment rod moves along the guide rod in the vertical direction and can be fixed at any height. The grinding tool is installed at one end of the height adjustment rod.

[0014] Further, the height adjustment assembly includes two guide rods. The bottoms of the two guide rods are fixed on the mobile trolley. The height adjustment rod extends in the horizontal direction and is installed through the two guide rods at the same time.

[0015] Further, the mobile trolley includes a chassis, moving wheels and a push rod. The chassis is of a frame structure. The moving wheels are installed below the chassis. A push rod for pushing the mobile trolley is installed on one side of the chassis.

[0016] In summary, compared with the prior art, a weld seam auxiliary grinding device provided by the present utility model has the following advantages:

[0017] (1) An operator of the present utility model can move along the weld seam to be ground by operating the mobile trolley, so that the grinding tool grinds the corresponding weld seam. The operator stands during the operation process and does not need to grind back and forth in sections. The mobile trolley can be pushed along the weld seam direction to complete the grinding operation at one time, greatly improving the work efficiency, saving labor and improving the working conditions.

[0018] (2) The present utility model can adjust the grinding range of the grinding tool by adjusting the movable mechanism, and then switch the working position of the grinding tool, so that the device can be applicable to the grinding requirements of multiple different forms of weld seams, and improve the versatility of the device.

[0019] (3) The overall structure of the present utility model is simple, easy to operate and has a low cost.

[0020] (4) The present utility model solves the problems of limited space and violation of ergonomic principles existing in the grinding process of the large component welding process of high-speed multiple units.

[0021] (5) The present utility model can be applicable to all long-shaped profile welding processes.

[0022] The following further describes in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Description of the Drawings

[0023] The accompanying drawings, as part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model, but do not constitute an improper limitation to the present utility model. Obviously, the accompanying drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] In the accompanying drawings:

[0025] Figure 1 is a schematic structural diagram of the present utility model in the working state;

[0026] Figure 2 is a schematic structural diagram of the present utility model in the non-working state;

[0027] Figure 3 is an installation structure diagram of the grinding tool of the present utility model.

[0028] In the figures:

[0029] Mobile trolley 1, chassis 11, moving wheels 12, push rod 13;

[0030] Grinding tool 2, grinding wheel 21, body 22, grinding surface 23;

[0031] Moving mechanism 3, first arm 31, second arm 32, third arm 33;

[0032] Height adjustment assembly 4, guide rod 41, height adjustment rod 42, first positioning pin hole 43, second positioning pin hole 44.

[0033] It should be noted that the accompanying drawings and the text description are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] As Figure 1 and Figure 2 shown, the present utility model provides a weld seam auxiliary grinding device, which includes a mobile trolley 1 and a grinding tool 2. The grinding tool 2 is movably installed on one side of the mobile trolley 1 through a movable mechanism 3, and the movable mechanism 3 is adjusted to drive the grinding tool 2 to switch between multiple weld seams to be ground.

[0038] With this device, the operator can move along the weld seam to be ground by operating the mobile trolley 1, so that the grinding tool 2 grinds the corresponding weld seam. The operator stands during the operation process and does not need to reciprocate in segments. The mobile trolley 1 can be pushed along the weld seam direction to complete the grinding operation at one time, greatly improving the work efficiency, saving labor, and improving the working conditions. The device can also adjust the grinding range of the grinding tool 2 by adjusting the movable mechanism 3, and then switch the working position of the grinding tool 2, so that the device can be applicable to the grinding requirements of multiple different forms of weld seams, improving the versatility of the device.

[0039] In this embodiment, according to the pre-welding cleaning and post-welding grinding requirements of the long straight weld seam inside the vehicle between the side wall and the bottom frame side beam and the welding of large components such as between the ceiling and the side wall, the movable mechanism 3 is used to adjust the grinding tool 2 to rotate 90° in the vertical direction, so that the grinding tool 2 switches between the first weld seam (such as the PA weld seam) and the second weld seam (such as the PC weld seam). When the grinding surface of the grinding tool 2 is parallel to the horizontal plane, it is used to grind the first weld seam. After the grinding tool 2 rotates 90°, when the grinding surface of the grinding tool 2 is perpendicular to the horizontal plane, it is used to grind the second weld seam.

[0040] In this embodiment, in order to simplify the device structure and reduce the cost of the device, the mobile trolley 1 preferably adopts a manually pushed structure, which includes a chassis 11, moving wheels 12, and a push rod 13. The chassis 11 adopts a frame structure and is spliced and welded by square tubes, which can not only ensure the overall structural strength of the mobile trolley 1, but also help to reduce the weight of the mobile trolley 1. Four moving wheels 12 are installed below the chassis 11, and a push rod 13 for pushing the mobile trolley 1 is installed on one side of the chassis 11, which is convenient for the operator to push the mobile trolley 1 in a standing position for grinding operations and reduces the labor intensity.

[0041] The above-mentioned mobile trolley 1 can also adopt another implementation manner. An automatic running mechanism is installed on the mobile trolley 1, and the motor is used to drive the moving wheels 12 to move. The operator can control the moving route of the mobile trolley 1 by operating a control handle or a remote controller, etc., which is beneficial to further improve the operation efficiency and reduce the labor intensity.

[0042] As Figures 1 to 3 shown, in this embodiment, it is further preferred that the grinding tool 2 adopts a pneumatic grinding machine, and one grinding tool 2 is used to complete two operations of pre-welding cleaning and post-welding grinding, and is connected to an air duct during operation. The pneumatic grinding machine includes a grinding wheel 21 and a machine body 22, wherein the machine body 22 is fixedly connected to the moving mechanism 3, and the machine body 22 is connected to the air duct during operation. This is convenient for replacing different grinding tools 2 according to different weld grinding requirements, and is also convenient for the disassembly and assembly of the grinding tool 2.

[0043] As Figure 1 and Figure 2 shown, in this embodiment, it is further preferred that a height adjustment assembly 4 is installed on the mobile trolley 1, and the grinding tool 2 is installed on the height adjustment assembly 4. In this way, the operator can adjust the working height of the grinding tool 2, that is, the grinding wheel 21, according to the position of the weld, which can not only ensure the grinding quality, but also further improve the versatility of the device.

[0044] In this embodiment, it is even more preferred that the height adjustment assembly 4 includes at least one guide rod 41 extending in the vertical direction and a height adjustment rod 42 extending in the horizontal direction and sleeved on the guide rod 41. The height adjustment rod 42 has a through hole (not shown in the figure), and the height adjustment rod 42 vertically passes through the guide rod 41. The bottom of the guide rod 41 is fixedly installed on the chassis 11 of the mobile trolley 1. The guide rod 41 can be fixed to the chassis 11 by bolts or directly welded to the chassis 11. The height adjustment rod 42 moves in the vertical direction along the guide rod 41 and can be fixed at any height. The grinding tool 2 is installed at one end of the height adjustment rod 42, so that the working range of the grinding tool 2 (i.e., the grinding wheel 21) can be adjusted by moving the height adjustment rod 42 up and down.

[0045] In order to make the lifting of the height adjustment rod 42 more stable, in this embodiment, the height adjustment assembly 4 includes two guide rods 41. The bottoms of the two guide rods 41 are fixed on the chassis 11 of the mobile trolley 1. The height adjustment rod 12 extends in the horizontal direction, and two through holes are provided thereon, and it passes through the two guide rods 41 at the same time and moves up and down along the two guide rods 41.

[0046] In this embodiment, a plurality of first positioning pin holes 43 are arranged vertically on the guide rod 41, and at least one second positioning pin hole 44 is correspondingly arranged on the height adjustment rod 42. After adjusting to the required height, a positioning pin (not shown in the figure) is inserted into the second positioning pin hole 44 on the height adjustment rod 42 and the corresponding first positioning pin hole 43 of the guide rod 41, and then the height adjustment rod 42 can be locked at the required working height. This height adjustment structure is simple and convenient to operate.

[0047] Another implementation manner can also be adopted for the height adjustment assembly 4. A plurality of spring pins (not shown in the figure) are arranged vertically on the guide rod 41, and at least one second positioning pin hole 44 is correspondingly arranged on the height adjustment rod 42. After adjusting to the required height, the spring pins automatically pop out and insert into the corresponding second positioning pin holes 44 to lock the height position of the height adjustment rod 42.

[0048] Another implementation manner can also be adopted for the height adjustment assembly 4, that is, components such as gas springs are used to support the height adjustment rod 42, so that the height adjustment rod 42 moves up and down along the guide rod 41. When using a gas spring, the working height of the grinding tool 2 can be automatically adjusted, and the operation is more simple and convenient.

[0049] As Figures 1 to 3 shown, in this embodiment, further preferably, the moving mechanism 3 includes a first arm 31, a second arm 32 and a third arm 33. One end of the first arm 31 is rigidly and fixedly connected to one end of the height adjustment rod 42. The first arm 31 extends horizontally to one side. The other end of the first arm 31 is rotatably connected to the second arm 32, preferably connected by an articulated manner with a locking function. The second arm 32 can rotate up and down in the vertical direction around the first arm 31.

[0050] The other end of the second arm 32 is further connected to the third arm 33, and the grinding tool 2 is fixed by using the third arm 33. In this embodiment, further preferably, the third arm 33 is a clamp structure composed of two clamping arms. One ends of the two clamping arms are rotatably connected to the second arm 32. The turning direction of the clamping arms and the second arm 32 is perpendicular to the turning direction between the first arm 31 and the second arm 32. The other ends of the two clamping arms are fastened together by bolts. The body 22 in the grinding tool 2 is clamped and fixed between the two clamping arms, and then the grinding tool 2 is fixed on the third arm 33.

[0051] As Figure 1 shown, when the second arm 32 is in a vertical state, the grinding surface 23 of the grinding wheel 21 is parallel to the horizontal plane. At this time, it is used for pre-welding cleaning and post-welding grinding of the first weld (such as the PA weld); as Figure 2 shown, when the second arm 32 rotates upward by 90°, the second arm 32 is in a horizontal state, and the grinding surface 23 of the grinding wheel 21 is perpendicular to the horizontal plane for pre-welding cleaning and post-welding grinding of the second weld (such as the PC weld).

[0052] As Figure 1 and Figure 2 shown, the specific usage method of this grinding device is as follows:

[0053] 1. Use the third arm 33 to install and fix the grinding tool 2.

[0054] 2. When it is necessary to grind the first weld (PA weld), rotate the second arm 32 to make the second arm 32 perpendicular to the horizontal plane, lock the second arm 32 and the first arm 31, and fix the second arm 32 in the vertical state.

[0055] 3. Adjust the height of the height adjustment rod 42, that is, adjust the working height of the grinding tool 2, so that the grinding tool 2 can effectively grind the weld area.

[0056] 4. Connect the air duct to the grinding tool 2. The operator holds the push rod 33 and pushes the moving trolley 1 along the direction of the first weld. The grinding tool 2 performs pre-welding cleaning or post-welding grinding operations on one side of the moving trolley 1 for the first weld area.

[0057] 5. When it is necessary to grind the second weld (PC weld), rotate the second arm 32 upward to make the second arm 32 parallel to the horizontal plane, lock the second arm 32 and the first arm 31, and fix the second arm 32 in the horizontal state.

[0058] 6. Adjust the height of the height adjustment rod 42, that is, adjust the working height of the grinding tool 2, so that the grinding tool 2 can effectively grind the weld area.

[0059] 7. Connect the air duct to the grinding tool 2. The operator holds the push rod 33 and pushes the moving trolley 1 along the direction of the second weld. The grinding tool 2 performs pre-welding cleaning or post-welding grinding operations on one side of the moving trolley 1 for the second weld area.

[0060] The weld auxiliary grinding device provided by the present utility model has the following advantages:

[0061] 1. Using this device, the operator can move along the weld to be ground by operating the moving trolley, so that the grinding tool grinds the corresponding weld. The operator stands during the operation process and does not need to grind back and forth in segments. The moving trolley can be pushed along the weld direction to complete the grinding operation at one time, greatly improving the work efficiency, saving labor, and improving the working conditions.

[0062] 2. This device can adjust the grinding range of the grinding tool by adjusting the moving mechanism, and then switch the working position of the grinding tool, so that this device can be applicable to the grinding requirements of multiple different forms of welds, improving the versatility of this device.

[0063] 3. The device solves the problems of limited space and violation of ergonomic principles during the grinding process in the welding process of large components of high-speed EMUs.

[0064] 4. The overall structure of the device is simple, easy to operate, and has a low cost.

[0065] 5. The application field of the device is not limited to the field of high-speed EMUs and is applicable to all welding processes of long and large profiles.

[0066] The above are only the preferred embodiments of the present utility model and do not impose any formal restrictions on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present utility model, may make some modifications or equivalent changes by using the technical content mentioned above. The implementation schemes in the above embodiments can be further combined or replaced. However, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A weld seam auxiliary grinding device, characterized in that, Comprising: A mobile trolley; A grinding tool, which is movably installed on one side of the mobile trolley through a movable mechanism, and the movable mechanism is adjusted to drive the grinding tool to switch between multiple welds to be ground.

2. The weld seam auxiliary grinding device according to claim 1, characterized in that: The movable mechanism adjusts the grinding tool to rotate 90° in the vertical direction, so that the grinding tool switches between a first weld and a second weld. The grinding surface of the grinding tool is parallel to the horizontal plane for grinding the first weld, and the grinding surface is perpendicular to the horizontal plane for grinding the second weld.

3. The weld seam auxiliary grinding device according to claim 1 or 2, characterized in that: The grinding tool is a pneumatic grinding machine.

4. The weld seam auxiliary grinding device according to claim 1 or 2, characterized in that: The movable mechanism includes a first arm, a second arm and a third arm. One end of the first arm is fixedly connected to the mobile trolley, the other end of the first arm is rotatably connected to the second arm, the other end of the second arm is connected to the third arm, and the grinding tool is fixed by the third arm.

5. The weld seam auxiliary grinding device according to claim 4, wherein: The third arm is a clamp structure composed of two clamping arms. One ends of the two clamping arms are rotatably connected to the second arm, and the other ends of the clamping arms are fastened by bolts. The grinding tool is clamped and fixed between the two clamping arms.

6. The weld seam auxiliary grinding device according to claim 1 or 2, characterized in that: A height adjustment component is installed on the mobile trolley, and the grinding tool is installed on the height adjustment component.

7. The weld seam auxiliary grinding device according to claim 6, characterized in that: The height adjustment component includes at least one guide rod extending in the vertical direction and a height adjustment rod sleeved on the guide rod. The bottom of the guide rod is installed on the mobile trolley. The height adjustment rod moves along the guide rod in the vertical direction and can be fixed at any height. The grinding tool is installed at one end of the height adjustment rod.

8. The weld seam auxiliary grinding device according to claim 7, wherein: The height adjustment component includes two guide rods. The bottoms of the two guide rods are fixed on the mobile trolley. The height adjustment rod extends in the horizontal direction and is installed through the two guide rods at the same time.

9. The weld seam auxiliary grinding device according to claim 1 or 2, characterized in that: The mobile trolley includes a chassis, moving wheels and a push rod. The chassis is a frame structure. Moving wheels are installed below the chassis, and a push rod for pushing the mobile trolley is installed on one side of the chassis.

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