Door plate fixing workbench

Abstract

The utility model provides a door plate fixing workbench which comprises an operation table, a positioning mechanism and a plurality of fixing mechanisms, a door plate positioning space is formed between a first positioning unit and a second positioning unit, and horizontal movement of a door plate workpiece can be limited. The fixing mechanism comprises a base, a supporting arm and a pressing rod, the supporting arm is located above the operation plane, the pressing rod can move in the vertical direction, when the door plate workpiece needs to be fixed, the pressing rod can move downwards, the bottom of the pressing rod abuts against the door plate workpiece, and therefore movement of the door plate workpiece in the vertical direction is limited. And the positioning mechanism and the multiple fixing mechanisms act together, so that the door plate can be limited in all directions. Starting from the characteristics that an original workbench is not fixed and high in degree of freedom, the positioning mechanism and the fixing rod mechanism are designed, so that a door plate workpiece is limited and fixed in a positioning space after being placed on the workbench, time and labor are saved, powerful conditions can be created for subsequent welding operation, and welding quality can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle door panel repair tooling, and in particular relates to a door panel fixing workbench. Background Art

[0002] Gondolas are a type of railway freight car. They are characterized by being uncovered and having side panels on all four sides, two of which feature retractable doors for easy unloading. Gondolas are primarily used to transport bulk cargo such as coal, ore, mining and construction materials, lumber, and steel. They can also be used to transport lightweight machinery. When covered with a waterproof canvas or other covering, they can replace covered cars in transporting rain-resistant goods. Therefore, gondolas are highly versatile and represent the largest proportion of freight cars.

[0003] After running for a period of time, the open wagon needs to be inspected and repaired. The door panel of the open wagon is one of the parts that is easily deformed and damaged. When repairing the lower side door of a general open wagon, it often involves replacing the hinges and the lower half of the door panel (240mm wide).

[0004] Hinge replacement involves beveling damaged, corroded, or cracked hinges with a flame, then butting the new hinges together for welding. After this, a large gap often exists between the new hinge and the old door panel, requiring clamping tools such as clamps to reduce the gap to ≤2mm before welding. The clamps must then be removed after welding. This process is time-consuming and labor-intensive, posing safety risks. Door panel replacement involves cutting a 240mm-wide old door panel, assembling the new panel (240mm wide), and spot-welding it. Due to the large gap between the old and new door panels, welding conditions are unsatisfactory, requiring clamping with tools such as clamps. During clamping, the door panel, unfixed, can shift from its original position due to external forces, resulting in poor clamping effectiveness, increased labor intensity, and compromised welding quality. Utility Model Content

[0005] The utility model provides a door panel fixing workbench, which solves the problems of difficult positioning, time-consuming and labor-intensive repair of open car doors, and provides assistance for the door panel repair work.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is to provide a door panel fixing workbench, comprising:

[0007] an operating table, wherein the upper surface of the operating table forms a horizontal operating plane;

[0008] A positioning mechanism comprising a first positioning unit and a second positioning unit, wherein the first positioning unit is provided at the center of the operating plane, and the second positioning unit is provided at the periphery of the first positioning unit, and a positioning space for the door panel workpiece is formed between the second positioning unit and the first positioning unit; and

[0009] Multiple fixing mechanisms are arranged on the operating table along the circumference of the second positioning unit. The fixing mechanisms include a base, which is connected to the operating table. The top of the base is provided with a support arm extending above the operating plane, and a clamping rod is movably provided on the support arm in the vertical direction.

[0010] In a possible implementation, a accommodating cavity is opened on the side of the operating table, and a cabinet door is movably connected to the open side of the accommodating cavity.

[0011] In a possible implementation, when the door panel workpiece is placed on the operating plane, the first positioning unit is located between the door panel workpiece and the operating plane, and the first positioning unit is used to support the door panel workpiece.

[0012] In a possible implementation, the first positioning unit is ring-shaped, and a bottom of the first positioning unit is connected to the operating table.

[0013] In one possible implementation, the base includes:

[0014] a fixed block connected to the operating table; and

[0015] A column is arranged on the fixed block along a vertical direction, and one end of the support arm is connected to the column.

[0016] In one possible implementation, the fixing block is provided with a plurality of first mounting holes along the circumference of the column, the first mounting holes pass through the thickness direction of the fixing block, and the operating table is provided with second mounting holes corresponding one-to-one to the first mounting holes; the base also includes fasteners provided in the first mounting holes and the second mounting holes.

[0017] In a possible implementation, the support arm is provided with an adjustment hole that runs through the support arm in its thickness direction, the adjustment hole is a threaded hole, and the pressing rod is threadedly engaged with the adjustment hole.

[0018] In a possible implementation, the upper end of the pressing rod is connected to a horizontally arranged holding rod.

[0019] In a possible implementation, the pressing rod is a pneumatic telescopic rod.

[0020] In a possible implementation, a pad is provided at the bottom of the pressing rod.

[0021] Compared with the prior art, the door panel fixing workbench provided by the present invention has the following beneficial effects:

[0022] The door panel fixing workbench provided by the present invention is used to position and clamp the door panel workpiece during the maintenance of open cars, so as to facilitate cutting and welding operations. The door panel fixing workbench includes an operating table, a positioning mechanism and a plurality of fixing mechanisms. The operating table forms a horizontal operating plane. The positioning mechanism includes a first positioning unit and a second positioning unit respectively arranged on the operating plane. A positioning space for the door panel is formed between the first positioning unit and the second positioning unit, which can limit the horizontal movement of the door panel workpiece so that the door panel workpiece cannot move in the lateral or radial direction. The fixing mechanism includes a base, a support arm and a clamping rod. The support arm is located above the operating plane. The clamping rod can move in the vertical direction. When the door panel workpiece needs to be fixed, the clamping rod can be moved downward so that the bottom of the clamping rod is pressed against the door panel workpiece, thereby limiting the vertical movement of the door panel workpiece. The positioning mechanism and the plurality of fixing mechanisms work together to limit the door panel workpiece in all directions, so as to facilitate cutting and welding operations thereon.

[0023] The utility model starts from the characteristics of the original workbench that is not fixed and has a high degree of freedom, and designs a positioning mechanism and a fixing rod mechanism, so that the lower side door is limited and fixed in the positioning space after being placed on the workbench, saving time and effort, and can create powerful conditions for subsequent welding operations, which helps to improve welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a door panel fixing workbench provided in one embodiment of the present invention Figure 1 ;

[0025] Figure 2 A schematic diagram of the structure of a door panel fixing workbench provided in one embodiment of the present invention Figure 2 ;

[0026] Figure 3 A schematic diagram of the structure of a door panel fixing workbench provided in one embodiment of the present invention Figure 3 ;

[0027] Figure 4 A schematic diagram of the structure of a door panel fixing workbench provided in one embodiment of the present invention Figure 4 .

[0028] Description of reference numerals:

[0029] 1. Door panel fixing workbench; 10. Operating table; 11. Cabinet door; 20. Positioning mechanism; 21. First positioning unit; 22. Second positioning unit; 30. Fixing mechanism; 31. Base; 311. Fixing block; 312. Column; 313. Fastener; 32. Support arm; 33. Clamping rod; 331. Holding rod; 332. Pad. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] It should be noted that when an element is referred to as being "fixed to," "fixed," or "fixedly disposed" on another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to," "connected to" another element, it may be directly connected to the other element or there may also be an intermediate element. When an element is referred to as being "set on," "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. "Multiple" refers to two or more. "At least one" refers to one or more. "Several" refers to one or more.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0033] Please also refer to Figures 1 to 4 , the door panel fixing workbench 1 provided in an embodiment of the present utility model is described below.

[0034] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The embodiment of the present invention provides a door panel fixing workbench 1, comprising an operating table 10, a positioning mechanism 20 and a plurality of fixing mechanisms 30. The upper surface of the operating table 10 forms a horizontal operating plane; the positioning mechanism 20 comprises a first positioning unit 21 and a second positioning unit 22, the first positioning unit 21 is arranged at the center of the operating plane, the second positioning unit 22 is arranged on the periphery of the first positioning unit 21, and a positioning space for the door panel workpiece is formed between the second positioning unit 22 and the first positioning unit 21; a plurality of fixing mechanisms 30 are arranged on the operating table 10 along the circumference of the second positioning unit 22, the fixing mechanism 30 comprises a base 31, the base 31 is connected to the operating table 10, the top of the base 31 is provided with a support arm 32 extending above the operating plane, and the support arm 32 is movably provided with a clamping rod 33 in the vertical direction.

[0035] Compared with the prior art, the door panel fixing workbench 1 provided in the embodiment of the present invention has the following beneficial effects:

[0036] The door panel fixing workbench 1 provided in an embodiment of the present invention is used to position and clamp door panel workpieces during open car maintenance to facilitate cutting and welding operations. The door panel fixing workbench 1 includes an operating table 10, a positioning mechanism 20, and multiple fixing mechanisms 30. The operating table 10 forms a horizontal operating plane. The positioning mechanism 20 includes a first positioning unit 21 and a second positioning unit 22, respectively disposed on the operating plane. The first positioning unit 21 and the second positioning unit 22 form a positioning space for the door panel, which can limit the horizontal movement of the door panel, preventing the door panel from moving laterally or radially. The fixing mechanism 30 includes a base 31, a support arm 32, and a clamping rod 33. The support arm 32 is located above the operating plane. The clamping rod 33 can move vertically. When the door panel workpiece needs to be fixed, the clamping rod 33 can be moved downward so that the bottom of the clamping rod 33 presses against the door panel workpiece, thereby limiting the vertical movement of the door panel workpiece. The positioning mechanism 20 and the multiple fixing mechanisms 30 work together to fully limit the position of the door panel, facilitating cutting and welding operations.

[0037] The embodiment of the utility model starts from the characteristics of the original workbench that is not fixed and has a high degree of freedom, and designs a positioning mechanism 20 and a fixing rod mechanism, so that the lower side door is limited and fixed in the positioning space after being placed on the workbench, saving time and effort, and creating powerful conditions for subsequent welding operations, which helps to improve welding quality.

[0038] The door panel fixing workbench 1 provided by the embodiment of the present invention meets the maintenance process requirements of the lower side door of existing railway freight cars during factory maintenance, and solves the problems of difficult positioning, time-consuming and labor-intensive maintenance and replacement of the hinges of open car doors. The fixing mechanism 30 is used to press the door panel workpiece, and after the lower side door panel is replaced, the hinges can be closely attached to the new door panel, thereby ensuring the welding quality.

[0039] The positioning mechanism 20 includes a first positioning unit 21 on the inner side and a second positioning unit 22 on the outer side. The first positioning unit 21 is located at the center of the operating platform 10. The shape of the first positioning unit 21 can be made according to the shape of the lower side door of the open car, and the second positioning unit 22 is made according to the overall outer dimensions of the lower side door, so that the lower side door can be completely stuck in the positioning space, ensuring that the lower side door is firmly fixed during maintenance.

[0040] The first positioning unit 21 and the second positioning unit 22 can be made of metal plates or channel steel. They can be fixed on the operating table 10 by welding, screw connection, etc.

[0041] Multiple fixing mechanisms 30 are positioned on the operating table 10 along the circumference of the second positioning unit 22. The fixing mechanisms 30 should be positioned away from components such as the lower door hinge to avoid interference. The fixing mechanisms 30 can be positioned on either the second positioning unit 22 or the operating table 10 without affecting normal operation. The clamping rod 33 can be moved up and down electrically, pneumatically, or manually.

[0042] The door panel fixing workbench 1 can be used for door panel repair and welding according to the following steps:

[0043] (1) The operator places the lower door panel to be folded and cut on the operating plane of the operating table 10;

[0044] (2) Place the folding sheets that need to be cut and replaced at the cutting and replacing location according to the process requirements, ensuring that there is cleanliness and no rust between the folding sheet cutting and replacing materials and the door panel;

[0045] (3) Adjust the fixing mechanism 30 to clamp the lower door hinge together with the hinge cut-off material;

[0046] (4) Check whether the joints between the replaced folding material and the old folding material meet the process requirements, and weld them after they meet the requirements.

[0047] See also Figure 1 In some possible embodiments, a storage cavity is opened on the side of the operating table 10, and a cabinet door 11 is movably connected to the open side of the storage cavity. Tools such as wrenches can be placed in the storage cavity, which is convenient and practical. The cabinet door 11 can be installed on the operating table 10 by means of hinges, sliding, pushing and pulling, etc.

[0048] See also Figure 1 In some possible embodiments, the shape of the first positioning unit 21 matches the shape of the door panel workpiece to better limit its position. When the door panel workpiece is placed on the operating plane, the first positioning unit 21 is located between the door panel workpiece and the operating plane, and the first positioning unit 21 is used to support the door panel workpiece. Optionally, the first positioning unit 21 is annular, and the bottom of the first positioning unit 21 is connected to the operating table 10.

[0049] See also Figure 3 and Figure 4 In some possible embodiments, the base 31 includes a fixed block 311 and a column 312 , the fixed block 311 is connected to the operating table 10 ; the column 312 is vertically arranged on the fixed block 311 , and one end of the support arm 32 is connected to the column 312 .

[0050] In this embodiment, the fixing block 311 and the column 312 can be made of carbon steel, cast iron, or other materials, and can be connected integrally by casting, forging, welding, or other methods, or can be connected using fasteners. The fixing block 311 is mounted on the operating table 10 or the second positioning unit 22. The column 312 is a vertically arranged rod-shaped member. One end of the support arm 32 is connected to the upper portion of the column 312, and the other end of the support arm 32 extends horizontally above the operating plane for mounting the clamping rod 33.

[0051] See also Figure 1 In some possible embodiments, the fixing block 311 defines a plurality of first mounting holes along the circumference of the upright column 312. The first mounting holes extend through the thickness of the fixing block 311, and the operating table 10 defines second mounting holes corresponding one-to-one with the first mounting holes. The base 31 also includes fasteners 313 disposed in the first and second mounting holes. The fasteners 313 may be screws, studs, bolts, etc., and are easy to install and remove.

[0052] See also Figure 1 In some possible embodiments, the clamping rod 33 is a screw rod, and the support arm 32 is provided with an adjustment hole that runs through its own thickness direction. The adjustment hole is a threaded hole, and the clamping rod 33 is threadedly engaged with the adjustment hole. Rotating the clamping rod 33 can move the clamping rod 33 upward or downward, thereby clamping or releasing the door panel workpiece.

[0053] See also Figure 4 In some possible embodiments, in order to facilitate the operator to rotate the pressing rod 33, the upper end of the pressing rod 33 is connected to a horizontally arranged holding rod 331.

[0054] A pad 332 is provided at the bottom of the pressing rod 33. The pad 332 can be made of rubber, wood or other materials. The pad 332 is in contact with the door panel to prevent the door panel from being deformed due to excessive pressing force.

[0055] It can be understood that the various parts in the above embodiments can be freely combined or deleted to form different combination embodiments. The specific contents of each combination embodiment will not be repeated here. After this description, it can be considered that the specification of the utility model has recorded various combination embodiments and can support different combination embodiments.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A door panel fixing workbench, characterized in that: include: An operating table (10), wherein the upper surface of the operating table (10) forms a horizontal operating plane; A positioning mechanism (20) comprising a first positioning unit (21) and a second positioning unit (22), wherein the first positioning unit (21) is arranged on the operating plane, and the second positioning unit (22) is arranged on the periphery of the first positioning unit (21), and a positioning space for limiting the position of a door panel workpiece is formed between the second positioning unit (22) and the first positioning unit (21); and A plurality of fixing mechanisms (30) are arranged on the operating table (10) along the circumference of the second positioning unit (22), the fixing mechanism (30) includes a base (31), the base (31) is connected to the operating table (10), the top of the base (31) is provided with a support arm (32) extending above the operating plane, the support arm (32) is movably provided with a clamping rod (33) in the vertical direction, and the fixing mechanism (30) is adjusted to clamp the lower side door hinge together with the hinge cut material.

2. The door panel fixing workbench according to claim 1, characterized in that: An accommodating cavity is provided on the side of the operating table (10), and a cabinet door (11) is movably connected to the opening side of the accommodating cavity.

3. The door panel fixing workbench according to claim 1, characterized in that: When the door panel workpiece is placed on the operating plane, the first positioning unit (21) is located between the door panel workpiece and the operating plane, and the first positioning unit (21) is used to support the door panel workpiece.

4. The door panel fixing workbench according to claim 3, characterized in that: The first positioning unit (21) is annular, and the bottom of the first positioning unit (21) is connected to the operating table (10).

5. The door panel fixing workbench according to claim 1, characterized in that: The base (31) comprises: a fixed block (311), connected to the operating table (10); and A column (312) is arranged on the fixing block (311) in a vertical direction, and one end of the support arm (32) is connected to the column (312).

6. The door panel fixing workbench according to claim 5, characterized in that: The fixing block (311) is provided with a plurality of first mounting holes along the circumference of the column (312), the first mounting holes penetrating the thickness direction of the fixing block (311), and the operating table (10) is provided with second mounting holes corresponding to the first mounting holes one by one; the base (31) further comprises fasteners (313) provided in the first mounting holes and the second mounting holes.

7. The door panel fixing workbench according to claim 1, characterized in that: The support arm (32) is provided with an adjustment hole that runs through the support arm (32) in its thickness direction. The adjustment hole is a threaded hole, and the pressing rod (33) is threadedly matched with the adjustment hole.

8. The door panel fixing workbench according to claim 7, characterized in that: The upper end of the pressing rod (33) is connected to a horizontally arranged holding rod (331).

9. The door panel fixing workbench according to claim 1, characterized in that: The pressing rod (33) is a pneumatic telescopic rod.

10. The door panel fixing workbench according to claim 1, characterized in that: A cushion block (332) is provided at the bottom of the pressing rod (33).

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