A welding positioning device for cabin flange

Abstract

The present invention discloses a welding positioning device for a cabin flange, comprising a base, a sliding seat, a vertical lead screw and a horizontal screw seat. The sliding seat can move horizontally along a groove, and the vertical lead screw can move up and down along a column. When the vertical lead screw is lifted or lowered, the scale value on the scale column to which the vertical pointer is aligned is consistent with the distance value from the height reference datum plane on the cabin to the top of the adjusting gasket; when the sliding seat moves horizontally, the scale value aligned with the sliding seat is consistent with the distance value from the intersection line of the arc surface of the arc plate on the raising platform and the symmetry plane of the circumferential aligner to the axis of the vertical lead screw; the entire device of the present invention has a simple structure, a small number of parts, no complex parts, low manufacturing cost, and simple operation of the device. All operations can be completed by performing simple operations such as flange installation, overlapping the arc plate and the inner arc surface of the lower end of the cabin, aligning the circumferential aligner, vertically lifting the vertical lead screw, and horizontally moving the horizontal lead screw.

Description

Technical Field

[0001] The invention relates to the field of aerospace equipment manufacturing, and in particular to a cabin flange welding positioning device. Background Art

[0002] Welding is a very common material connection method. In the fields of aviation, aerospace, shipbuilding, chemical industry, etc., welding flange parts to the cabin is a very important process. Before welding, in order to ensure that the cabin and the flange have a small joint gap, high dimensional accuracy and form and position tolerance after welding, the two must be correctly positioned and fixed. Therefore, there is an urgent need for a device that can firmly fix the flange on the cabin before welding so that there is no relative displacement between the two in the circumferential and vertical directions, so as to ensure that the two have a small joint gap, high dimensional accuracy and form and position tolerance after welding.

[0003] At present, there are two methods to fix the flange on the cabin: one is to place the flange on a support block, the height of the support block meets the position and size requirements of the flange and the cabin in the vertical direction, and the distance from the flange axis to the lower end busbar of the inner circumference of the cabin is measured by a steel ruler. The other is to ensure that the flange axis is in the vertical direction and the height meets the requirements, and then judge the alignment of the joint by naked eyes and weld the two together.

[0004] Its main defects are:

[0005] 1. Use support blocks and steel rulers to measure distance for positioning. Since the diameter of the cabin is more than 3 meters and the specific position of its axis cannot be accurately determined, when measuring the distance from the flange axis to the inner busbar of the cabin, the measuring surface of the steel ruler may not pass through the cabin axis. In addition, the steel ruler is prone to deformation due to its long length, so the measurement result is very inaccurate and cannot meet the design requirements.

[0006] 2. Use the naked eye to judge the alignment of the joint for welding. Since the welding joint is not processed in place and a certain amount of grinding allowance is left, the horizontal position dimensional accuracy of the flange is very poor when this method is used for welding, and it cannot meet the design requirements. Summary of the invention

[0007] The purpose of the present invention is to design a flange welding positioning device to solve the problem that it is difficult to achieve accurate positioning of cabin parts in the current processing process.

[0008] In order to achieve the above object, the present invention adopts the following technical solution:

[0009] A cabin flange welding positioning device, comprising:

[0010] A base is provided with grooves with two ends passing through the base in the horizontal direction.

[0011] The sliding seat is arranged in the groove of the base, and a column is arranged on the sliding seat, and the column passes through both ends along the axis.

[0012] A vertical screw is arranged in a column on a sliding seat, a rotating wheel is arranged between the vertical screw and the column, the rotating wheel is engaged with the vertical screw through a thread, and the top end of the vertical screw is connected to a flange.

[0013] A horizontal screw seat, wherein the horizontal screw seat is fixedly arranged on the bottom plate, a horizontal screw is connected to the horizontal screw seat, and one end of the horizontal screw is fixedly connected to the sliding seat.

[0014] The sliding seat can move horizontally along the groove, and the vertical lead screw can move up and down along the column.

[0015] In the above technical solution, the sliding seat includes a top plate, a bottom plate and a vertical plate connecting the top plate and the bottom plate, the bottom plate is arranged in the groove, the top plate is provided with a through hole, the column is arranged on the through hole, and the vertical screw passes through the column and the top plate in sequence.

[0016] In the above technical solution, a circular groove is arranged in the column of the sliding seat, and the lower end of the rotating wheel is arranged in the circular groove.

[0017] In the above technical solution, a guide key is fixedly provided in the column of the sliding seat, a key slot is axially provided on the vertical lead screw corresponding to the guide key, and the other end of the guide key is inserted into the key slot.

[0018] In the above technical solution, a baffle is arranged between the bottom plate and the top plate of the sliding seat, and one end of the vertical screw rod is connected to the baffle.

[0019] In the above technical solution, a raising platform is provided on one side of the base, a circumferential aligner is provided at the center position of the upper surface of the raising platform, a horizontal screw seat is provided on the other side of the base, and a sliding seat is provided between the raising platform and the horizontal screw seat.

[0020] In the above technical solution, the horizontal screw seat is connected to the horizontal screw via a thread, one end of the horizontal screw is fixedly connected to the vertical plate, and the horizontal screw and the base are parallel to each other.

[0021] In the above technical solution, a scale column and a column are arranged on the top plate of the sliding seat, one end of the vertical pointer is connected with the column through a circular hole, and the other end of the vertical pointer is connected with the scale column through a gap fit.

[0022] In the above technical solution, the symmetry plane of the circumferential aligner passes through the axis of the vertical screw rod and coincides with the symmetry plane of the bottom plate groove.

[0023] In the above technical scheme, when the vertical screw is raised or lowered, the scale value on the scale column where the vertical pointer is aligned is consistent with the distance value from the height reference datum plane on the cabin to the top of the adjustment gasket; when the sliding seat moves horizontally, the scale value aligned with the sliding seat is consistent with the distance value from the intersection of the arc surface of the arc plate on the raising platform and the symmetry plane of the circumferential aligner to the axis of the vertical screw.

[0024] The working principle and working process of the present invention are as follows:

[0025] Step 1: Place a set of equal-height blocks of the same height on the work platform, and place the cabin on the equal-height blocks. Place the device on another equal-height block of a fixed height. Assemble the flange plate on the connecting flange, connect and tighten with bolts and nuts. The purpose of padding equal-height blocks is to provide sufficient operating space.

[0026] Step 2: Move the device horizontally together with the equal height block to make the arc surface of the arc plate coincide with the inner arc surface of the lower end of the cabin body, and align the symmetric surface of the circumferential aligner with the circumferential position engraved line on the cabin body.

[0027] Step 3: Since the horizontal screw seat is fixed, the horizontal screw moves left and right in the horizontal direction. Since the left side of the horizontal screw is located in the cavity formed by the sliding seat and the baffle, and can only rotate, the horizontal screw will drive the sliding seat and the parts connected to it to move left and right along the groove direction of the bottom plate. Observe the scale value of the sliding seat alignment, and stop turning the handle when it reaches the design requirement value. Tighten the butterfly nut by hand to prevent the sliding seat from shifting horizontally during later operations.

[0028] Step 4: As the sliding seat and baffle limit the vertical movement of the handwheel, and the guide key prevents the rotation of the vertical screw, the vertical screw moves up and down in the vertical direction. Observe the scale value aligned with the vertical pointer, and stop the rotation of the handwheel when it reaches the design requirement.

[0029] Step 5: When there is a need for filing at the flange welding joint, first turn the hand wheel to lower the connection flange. Then turn the handle to move the horizontal position of the connection flange toward the center axis of the cabin. Then remove the flange from the connection flange and complete the corresponding filing work. Finally, repeat steps 3 and 4.

[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0031] 1. The whole device has a simple structure, a small number of parts, no complicated parts, and low manufacturing cost.

[0032] 2. The device is easy to operate. It only requires simple operations such as installing the flange, aligning the arc plate with the inner arc surface of the lower end of the cabin, aligning the circumferential aligner, vertically lifting the vertical screw rod, and horizontally moving the horizontal screw rod to complete all operations without the need for special training for workers.

[0033] 3. It is not only suitable for single piece and small batch production of welding, but also suitable for mass production.

[0034] 4. After the device is manufactured, it is tested that the parallelism between the connecting flange and the lower bottom surface of the device is 0.6mm, the verticality of the connecting flange axis to the lower bottom surface of the device is 0.5mm, the dimensional accuracy of the horizontal scale to the measuring reference is ±0.45mm, and the dimensional accuracy of the vertical scale to the measuring reference is ±0.35mm. The form and position tolerances are very high and can meet the design requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0036] Figure 1 It is the overall structural front view of the present invention;

[0037] Figure 2 It is the AA view;

[0038] Figure 3 It is a schematic diagram of the structure of the sliding table;

[0039] Among them: 1 is the base, 2 is the sliding table, 2-1 is the bottom plate, 2-2 is the top plate, 2-3 is the vertical plate, 2-4 is the reinforcing plate, 2-5 is the column, 3 is the vertical screw, 4 is the horizontal screw seat, 5 is the horizontal screw, 6 is the connecting flange, 7 is the scale column, 8 is the column, 9 is the raising platform, 10 is the vertical pointer, 11 is the baffle, 12 is the rotating wheel, and 13 is the guide key. DETAILED DESCRIPTION

[0040] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0041] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0042] like Figure 1 and Figure 2As shown, the welding positioning device of this embodiment mainly includes a base 1, a sliding seat 2, a horizontal screw 5 and a horizontal screw seat 4, a vertical screw 3, a raising platform 9, a column 8 and a scale column 7. The connecting flange 6 is connected to the top of the vertical screw 3. The specific structure is as follows.

[0043] The base 1 is a flat plate structure, and a groove with a square cross section and two ends passing through is arranged in the horizontal direction on the upper surface, and the groove is used to place the sliding seat 2. Scale lines and corresponding scale values ​​are arranged along the groove on the upper surface of the base 1, and the displacement of the sliding seat 2 can be judged according to the corresponding scale values ​​when the sliding seat 2 moves in the groove. A limit block is arranged at one end of the groove to limit the sliding seat 2 from sliding out of the groove.

[0044] Sliding seat 2 Figure 3 As shown, it includes a bottom plate 2-1, a top plate 2-2 and a vertical plate 2-3. The top plate 2-2 is arranged parallel to the bottom plate 2-1. A through hole is arranged on the top plate 2-2. A column 2-5 is arranged on the through hole. The column 2-5 passes through both ends along the axis, and the through part is connected to the through hole. One end of the vertical screw 3 passes through the column 2-5 and the through hole and then extends into between the top plate 2-2 and the bottom plate 2-1. A circular groove is arranged inside the column 2-5, and the lower end of the rotating wheel 12 is arranged in the circular groove. The vertical screw 3 passes through the rotating wheel 12, and the vertical screw 3 and the rotating wheel 12 are connected by threads. In order to limit the rotation of the vertical screw 3, a guide key 13 is fixedly arranged inside the through area of ​​the column 2-5, and a key slot is arranged on the surface of the vertical screw 3 along the axis. One end of the guide key 13 is inserted into the guide slot, thereby limiting the rotation of the vertical screw 3. When the rotating wheel 12 rotates, the vertical screw 3 can only be lifted and lowered in the vertical direction under its drive. A baffle 11 is arranged at the lower end of the vertical screw 3 to prevent the vertical screw 3 from falling off the sliding seat 2 when moving in the vertical direction.

[0045] A horizontal screw seat 4 is fixedly arranged on the base 2, and a horizontal screw 5 is connected to the horizontal screw seat 4 by threads. The horizontal screw 5 can be rotated by a driving wheel to drive the horizontal screw 5 to move horizontally on the horizontal screw seat 4. One end of the horizontal screw 5 is fixedly connected to the sliding seat 2. In order to increase the stability of the sliding seat 2, reinforcing plates 2-4 are added to both sides of the vertical plate 2-3. The reinforcing plates 2-4 and the vertical plate 2-3 form a cavity, and one end of the horizontal screw 5 extends into the cavity and is fixedly connected. The sliding seat 2 is driven to move in the groove of the base 1 by the horizontal screw 5.

[0046] A raising platform 9 is arranged on the base 2 . The raising platform 9 is mainly used to set the cabin body to be welded. A circumferential aligner is arranged at the center position of the upper surface of the raising platform 9 .

[0047] A column 8 and a scale column 7 are connected to the top plate 2-2 of the sliding seat 2, and a vertical pointer is arranged between the column 8 and the scale column 7. One end of the vertical pointer is connected to the column 8 with a clearance fit through a circular hole, and the other end of the vertical pointer is connected to the scale column with a clearance fit.

[0048] In the whole system, the vertical screw 3, the sliding seat 2, the guide key 13, the rotating wheel 12 and the connecting flange 6 constitute a vertical lifting mechanism; the base 1, the sliding seat 2, the horizontal screw 5 and the horizontal screw seat 4 constitute a horizontal sliding mechanism. After the whole system is installed, it is necessary to ensure that when the vertical screw is lifted, the scale value of the vertical pointer alignment is consistent with the distance value from the height reference datum plane on the cabin to the top of the adjustment gasket; ensure that the symmetry plane of the circumferential aligner passes through the axis of the vertical screw and coincides with the symmetry plane of the bottom plate groove; ensure that when the sliding seat moves left and right, the scale value of the sliding seat alignment is consistent with the distance value from the intersection of the arc surface of the arc plate and the symmetry plane of the circumferential aligner to the axis of the vertical screw.

[0049] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A tank flange welding positioning device, characterized in that include: A base is provided with a groove with two ends passing through it in a horizontal direction. The sliding seat is arranged in the groove of the base, and a column is arranged on the sliding seat, and the column passes through both ends along the axis. A vertical screw is arranged in a column on a sliding seat, a rotating wheel is arranged between the vertical screw and the column, the rotating wheel is engaged with the vertical screw through a thread, and the top end of the vertical screw is connected to a flange. A horizontal screw seat, wherein the horizontal screw seat is fixedly arranged on the bottom plate, a horizontal screw is connected to the horizontal screw seat, and one end of the horizontal screw is fixedly connected to the sliding seat. The sliding seat can move horizontally along the groove, and the vertical lead screw can move up and down along the column; A guide key is fixedly arranged in the column of the sliding seat, a key slot is arranged along the axial direction on the vertical lead screw corresponding to the guide key, and the other end of the guide key is inserted into the key slot; A raising platform is arranged on one side of the base, a circumferential aligner is arranged at the center position of the upper surface of the raising platform, a horizontal screw seat is arranged on the other side of the base, and a sliding seat is arranged between the raising platform and the horizontal screw seat; A scale column and a column are arranged on the top plate of the sliding seat, one end of the vertical pointer is connected with the column through a circular hole, and the other end of the vertical pointer is connected with the scale column through a clearance fit; The symmetry plane of the circumferential aligner passes through the axis of the vertical screw rod and coincides with the symmetry plane of the bottom plate groove; When the vertical screw is raised or lowered, the scale value on the scale column where the vertical pointer is aligned is consistent with the distance value from the height reference datum plane on the cabin to the top of the adjusting gasket; when the sliding seat moves horizontally, the scale value aligned with the sliding seat is consistent with the distance value from the intersection of the arc surface of the arc plate on the raising platform and the symmetry plane of the circumferential aligner to the axis of the vertical screw.

2. A tank flange welding positioning device according to claim 1, characterized in that: The sliding seat includes a top plate, a bottom plate and a vertical plate connecting the top plate and the bottom plate, the bottom plate is arranged in the groove, the top plate is provided with a through hole, the column is arranged on the through hole, and the vertical lead screw passes through the column and the top plate in sequence.

3. A tank flange welding positioning device according to claim 2, characterized in that: A circular groove is arranged in the column of the sliding seat, and the lower end of the rotating wheel is arranged in the circular groove.

4. A tank flange welding positioning device according to claim 2, characterized in that: A baffle is provided between the bottom plate and the top plate of the sliding seat, and one end of the vertical screw rod is connected to the baffle.

5. The tank flange welding positioning device according to claim 1, characterized in that: The horizontal screw seat is connected to the horizontal screw via a thread, one end of the horizontal screw is fixedly connected to the vertical plate, and the horizontal screw and the base are parallel to each other.

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