A welding tool for chemical pressure vessel

Abstract

The utility model discloses a chemical pressure vessel welding frock, its characterized in that, including the saddle overturning mechanism for overturning jar body container, the saddle overturning mechanism on sliding assembly connection has the head pushing mechanism of pushing pressure vessel head, the head pushing mechanism is including head suit support, a plurality of abutting wheels of abutting in the head suit support assembly connection, the head pushing mechanism still includes the first -level push structure and the secondary push structure of pushing head. The above -mentioned structure realizes the head in the welding pressure vessel process and pushes to the jar body container welding interface part position in horizontal push alignment mode, has solved the technical defects that the high profile degree head is difficult to weld in horizontal push mode, has improved the welding efficiency, and reduced the welding difficulty.

Description

Technical Field

[0001] This utility model belongs to the field of chemical pressure vessel installation technology, and in particular relates to a welding fixture for chemical pressure vessels. Background Technology

[0002] Chemical pressure vessels are a type of container frequently used in chemical production processes. Because they can operate within a certain pressure range, they are classified as high-pressure vessels. In the welding process of chemical pressure vessels, existing technologies utilize a tiltable saddle to allow for changing the vessel's posture during welding.

[0003] Specifically, the shape of a pressure vessel includes a cylindrical tank (body) and heads welded to the tank. The shapes of the heads include cylindrical portions and curved portions butt-welded to the tank. Therefore, welding irregularly shaped heads is more difficult during the pressure vessel welding process.

[0004] The reason is that irregularly shaped end caps are difficult to keep stable through support alone. Therefore, existing technology uses wire ropes to suspend the end caps and gradually bring them closer to the welding position at the opening of the tank. However, the drawbacks of this method are quite obvious in actual operation:

[0005] Firstly, it is difficult to align the hoisted end cap with the welding position, especially for end caps that are suitable for large-diameter tank containers.

[0006] Secondly, during hoisting and welding, the end cap is prone to shaking, especially small-amplitude shaking, which leads to low precision in the welded joint and even obvious misalignment of the welded position. Therefore, the welding operation is difficult and the risk of welding failure is high.

[0007] The fundamental reason for the above-mentioned technical defects is that the head with high irregularity is difficult to weld together by pushing the two parts of the structure together as in the traditional butt welding method. The accuracy of hoisting and docking is poor and the position correction is difficult. Utility Model Content

[0008] Based on the above background, the purpose of this utility model is to provide a welding fixture for chemical pressure vessels.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A welding fixture for chemical pressure vessels includes a saddle tilting mechanism for tilting the tank body.

[0011] The saddle tilting mechanism is slidably connected to a head pushing mechanism that pushes the pressure vessel head. The head pushing mechanism includes a head sleeve bracket, and a number of pressing wheels that abut against the head are assembled and connected inside the head sleeve bracket.

[0012] The head pushing mechanism also includes a primary pushing structure and a secondary pushing structure for pushing the head.

[0013] Preferably, the saddle tilting mechanism includes track seats spaced apart on both sides;

[0014] A pair of spaced-apart saddle assemblies are slidably connected between the track seats, and the two ends of the tank container are supported on the saddle assemblies.

[0015] Preferably, the saddle assembly includes a saddle that is slidably connected, and the top two sides of the saddle are respectively rotatably connected to support rollers that are positioned on both sides of the bottom of the tank container;

[0016] The top center of the saddle is equipped with a drive wheel structure for driving the tank container to tilt. The drive wheel structure includes a drive wheel bracket, and a tilting wheel supported at the bottom of the tank container is rotatably connected to the drive wheel bracket.

[0017] The drive wheel bracket is equipped with a motor that drives the tilting wheel.

[0018] Preferably, the top of the track seat is provided with a groove, and the bottom sides of the saddle seat are fixedly connected to slide seats that are slidably connected in the groove;

[0019] A long track screw that is slidably connected to the slide block is fixedly connected inside the slide groove;

[0020] The long track screw has a pair of locking nuts that are positioned on both sides of the slide block, which are threaded to both sides.

[0021] Preferably, the longitudinal cross-sectional shape of the end cap assembly bracket is annular; the clamping wheels are circumferentially distributed on the inner sidewall of the end cap assembly bracket;

[0022] The bottom of the end cap assembly bracket is fixedly connected to a movable slide, and the bottom sides of the movable slide are fixedly connected to sliding bases, which are slidably connected to a long track screw.

[0023] Preferably, the primary pushing structure includes an annular pusher that matches the shape of the end cap;

[0024] The two sides of the annular push base are respectively fixedly connected to the support rods, and the support rods are slidably connected to the guide rail rods. The guide rail rods are welded and fixed to the outer wall of the end cap set support.

[0025] The guide rail is threaded with a push nut that moves the annular push seat.

[0026] Preferably, the end cap bracket has protrusions welded to both ends of its side wall to fix the guide rail rod.

[0027] Preferably, the secondary pushing structure includes long slide rails that are fixedly installed at the top of the track seat;

[0028] The long slide rail rod is slidably connected to the saddle and the movable slide table;

[0029] The long slide rail is threaded with a nut that pushes the movable slide table to move.

[0030] Preferably, the clamping wheel is detachably mounted on the end cap assembly bracket.

[0031] This utility model has the following beneficial effects:

[0032] 1. This method enables the horizontal pushing of container heads with high irregularity to the welding port of the tank container. This horizontal pushing method not only ensures precise docking and reduces the difficulty of the interface during the welding process, but also prevents the head from shaking during the welding process. Therefore, the welding stability is high, and the weld is uniform and highly accurate after welding.

[0033] 2. The first-stage pushing structure enables a small-amplitude push to align the weld joint of the end cap with the weld joint of the tank / container when the end cap approaches the welding position. The second-stage pushing structure enables a longer-distance push to align the end cap with the tank / container. Therefore, through these two stages of pushing, both long-distance coarse pushing and short-distance fine pushing alignment can be achieved according to the needs of the welding operation.

[0034] 3. This utility model enables the end cap to be pushed to the welding port of the tank body in a horizontal pushing alignment manner during the welding of pressure vessels, which solves the technical defect that it is difficult to weld end caps with high irregularity in a horizontal pushing manner, improves welding efficiency and reduces welding difficulty. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0037] Figure 2 This is a schematic diagram of the end cap pushing mechanism in an embodiment of the present utility model;

[0038] Figure 3 This is a schematic diagram of the saddle assembly in an embodiment of the present utility model;

[0039] Figure 4 This is an embodiment of the present utility model. Figure 1 Mid-top view;

[0040] Figure 5 This is an embodiment of the present utility model. Figure 1 Left view.

[0041] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] 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.

[0043] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0044] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0045] Example 1

[0046] like Figure 1-5 As shown, a welding fixture for a chemical pressure vessel includes a saddle tilting mechanism for tilting the tank container 1.

[0047] Specifically, the saddle tilting mechanism includes track seats 4 spaced apart on the front and rear sides; a pair of saddle assemblies 5 spaced apart are slidably connected between the track seats 4, and the two ends of the tank container 11 are supported on the saddle assemblies 5.

[0048] The saddle assembly 5 enables the heavy cylindrical tank container 11 to be flipped. Specifically, the saddle assembly 5 includes a saddle 51 that is slidably connected to the track seat 4. The saddle 51 is slidably connected to the track seat 4 in the following manner: according to the existing sliding connection method, a groove is opened on the top of the track seat 4, and slide seats 511 that are slidably connected in the groove are fixedly connected to the front and rear sides of the bottom of the saddle 51.

[0049] Meanwhile, after adjusting the position of the two saddle 51 components 5, in order to lock the saddle 51 components 5 and prevent movement during the overturning of the heavy tank, a long track screw 55 (both ends of the long track screw 55 are welded and fixed to the groove walls on the left and right sides of the groove) is fixedly connected in the above-mentioned groove.

[0050] Meanwhile, a pair of locking nuts 551, positioned on both sides of the slide block 511, are threaded onto the left and right sides of the long track screw 55. Each pair of locking nuts 551 is used to lock the saddle 51 assembly 5. Specifically, during the sliding adjustment process, the locking nuts 551 are turned to loosen the slide block 511. After adjusting the distance between the two saddle 51 assemblies 5 according to the length of the tank container 1, the locking nuts 551 are turned again until they abut against both sides of the slide block 511 to complete the positioning and locking.

[0051] The above structure is designed so that during the welding process, the saddle 51 assembly 5 can be adjusted according to the length of the tank container 1 to facilitate support from the ends of the tank container 1, thereby increasing the stability of the overturning.

[0052] Meanwhile, the top front and rear sides of the saddle 51 are respectively rotatably connected to support rollers 52 that are positioned on both sides of the bottom of the tank container 11 (similar to existing tilting structures, the support rollers 52 are positioned on both sides of the bottom of the tank container 11). Similar to existing tilting methods, a drive wheel structure for tilting the tank container 11 is assembled and connected to the top center of the saddle 51. The drive wheel structure includes a drive wheel bracket, on which a tilting wheel 53 supported on the bottom of the tank container 11 is rotatably connected; a motor 54 for driving the tilting wheel 53 is mounted on the drive wheel bracket.

[0053] The bottom of motor 54 is fixedly connected to a motor bracket, which is fixed to the drive wheel bracket.

[0054] During operation, the motors on the saddles 51 at both ends work synchronously (synchronous motor operation is a conventional method disclosed in the prior art, such as the motor being connected in parallel to an external circuit, and the motor being powered synchronously after the main switch on the circuit is turned on).

[0055] Driven by a motor, the tank container 1 is tilted. During the tilting process, the operator can perform operations on the tank container 1, such as welding flanges and opening pipe connections.

[0056] Example 2

[0057] like Figure 1-5 As shown, this embodiment is based on the structure of embodiment 1. In order to push the container head with high irregularity to the welding port position of the tank container 1 in a horizontal pushing manner, the horizontal pushing method can not only achieve precise docking and reduce the difficulty of the interface during the welding process, but also make the head less likely to shake during the welding process. Therefore, the welding stability is high, and the weld is uniform and highly accurate after welding.

[0058] Specifically, a head pushing mechanism 2 for pushing the pressure vessel head 3 is slidably connected to the saddle 51 flipping mechanism. The head pushing mechanism 2 includes a head sleeve bracket 21 (the height of the head sleeve bracket 21 corresponds to the height of the tank container 1 placed on the saddle 51 assembly 5, that is, during the welding process, when the tank container 1 is placed on the saddle 51 assembly 5, the head is sleeved on the head sleeve bracket 21, and the height of the head 3 corresponds to that of the tank container 1 and is horizontally aligned).

[0059] Meanwhile, in order to facilitate pushing the container head 3 toward the welding position of the tank container 1 during operation, and to facilitate the head limiting, the above-mentioned head set bracket 21 is equipped with a number of clamping wheels 22 that abut against the head (the longitudinal cross-sectional shape of the head set bracket 21 is annular, and the clamping wheels 22 are distributed circumferentially).

[0060] The rolling direction of the clamping wheel 22 is the same as the forward pushing direction of the container head 3. Therefore, during the pushing process, under the action of the circumferentially distributed clamping wheels 22, the container head 3 is pushed in a straight line. That is, during the pushing process, the container head 3 and the tank container 1 are properly aligned at the interface position, which provides a guarantee for subsequent welding alignment.

[0061] In order to push the end cap, the aforementioned end cap pushing mechanism 2 also includes a primary pushing structure and a secondary pushing structure for pushing the end cap.

[0062] The primary push structure enables the end cap to be pushed slightly when it approaches the welding position, so that the welding port of the end cap is connected to the welding port of the tank container 11.

[0063] The tank container 1 is propelled over a long distance by a two-stage propulsion structure.

[0064] Therefore, through the two-stage pushing mechanism, it is possible to perform both long-distance coarse pushing and short-distance fine pushing alignment according to the needs of welding operations.

[0065] Example 3

[0066] like Figure 1-5As shown, in this embodiment, based on the structure of embodiment 2, the bottom of the head assembly bracket 21 is fixedly connected to a movable slide 25. Specifically, the bottom sides of the head assembly bracket 21 are respectively fixedly connected to supports 211, and the bottom of the supports 211 is fixedly connected to a mounting base. The mounting base is detachably installed on the movable slide 25 by bolts.

[0067] The movable slide table 25 is also slidably connected to the slide groove on the track seat 4. The sliding method is the same as that of the saddle seat 51 mentioned above. Specifically, the bottom front and rear sides of the movable slide table 25 are fixedly connected to the sliding base (the sliding base is also slidably connected in the slide groove). Similarly, the sliding base is slidably connected to the long track screw 55.

[0068] The aforementioned primary pushing structure includes an annular pusher 24 that matches the shape of the end cap; that is, the annular pusher 24 abuts against the curved part of the end cap during the pushing process.

[0069] Specifically, support rods 241 are fixedly connected to the front and rear sides of the annular push base 24, and guide rail rods 23 are slidably connected to the support rods 241 (the ends of the support rods 241 are welded with column heads, and the guide rail rods 23 are slidably connected to the column heads). The guide rail rods 23 are welded and fixed to the outer side wall of the end cap set bracket 21 (correspondingly, the two ends of the side wall of the end cap set bracket 21 are welded with protrusions that are fixedly connected to the guide rail rods 23).

[0070] Meanwhile, a push nut is threaded onto the guide rail rod 23 to push the annular push seat 24 to move, and the push nut abuts against the column head.

[0071] After the end cap assembly bracket 21 slides close to the tank container 1, the operator pushes the end cap. During the pushing process, the cylindrical part of the end cap is pressed against the pressing wheel 22, thus maintaining a horizontal push and contacting the opening of the tank container 1. During the pushing process, the operator turns the push nut inward. Under the push of the push nut, the end cap is pushed through the annular push seat 24 (the curved structure of the end cap is locked onto the annular opening of the annular push seat 24, thereby further preventing the end cap from moving or misaligning). After docking, the push nut presses against the column head to maintain its position.

[0072] Example 4

[0073] like Figure 1-5 As shown, based on the structure of Embodiment 3, in order to realize the long-distance sliding adjustment end cap, the above-mentioned secondary push structure includes a long slide rail rod 26 fixedly installed at the top position of the track seat 4 (the top left and right ends of the track seat 4 are welded with protrusions, and the long slide rail rod 26 is welded and fixed between the protrusions); the long slide rail rod 26 is slidably connected to the saddle seat 51 and the movable slide table 25; at the same time, a nut 261 for pushing the movable slide table 25 to move is threaded on the long slide rail rod 26.

[0074] After the long-distance sliding slide 25-end head assembly bracket 21-end head structure is completed, the end head is pressed against the weld joint position according to the above-mentioned first-level pushing structure. Then, the nut 261 is screwed inward until it is pressed against the side wall of the sliding slide 25 to achieve a second locking.

[0075] After welding is completed, the operator pushes the movable slide 25-head assembly bracket 21 in the opposite direction until the head assembly bracket 21 is separated from the tank container 1 to complete the welding of the head.

[0076] Example 5

[0077] like Figure 1-5 As shown, in this embodiment, based on the structure of embodiment 4, the clamping wheel 22 is detachably mounted on the end cap set bracket 21. Specifically, the clamping wheel 22 includes a wheel frame and a clamping roller rotatably connected to the wheel frame.

[0078] The detachable method is as follows: a long screw is fixedly connected to the wheel frame and slidably connected to the head assembly bracket 21, and a pair of adjusting nuts A are threadedly connected to the long screw and positioned on both sides of the head assembly bracket 21.

[0079] The purpose of this method is not only to provide detachable clamping wheels 22. Furthermore, because the clamping wheels 22 are arranged in a circular array, the gap between them is matched to the size of the end cap (cylindrical part). Therefore, in actual operation, the operator can adjust the gap between the clamping wheels 22 to ensure that they can clamp and lock the end cap for different models of end caps. The method involves loosening the adjusting nut A and sliding the adjusting screw to control the gap adjustment.

[0080] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A welding fixture for chemical pressure vessels, characterized in that, Includes a saddle-turning mechanism for tilting tank containers; The saddle tilting mechanism is slidably connected to a head pushing mechanism that pushes the pressure vessel head. The head pushing mechanism includes a head sleeve bracket, and a number of pressing wheels that abut against the head are assembled and connected inside the head sleeve bracket. The head pushing mechanism also includes a primary pushing structure and a secondary pushing structure for pushing the head.

2. The welding fixture for chemical pressure vessels according to claim 1, characterized in that, The saddle tilting mechanism includes track seats spaced apart on both sides; A pair of spaced-apart saddle assemblies are slidably connected between the track seats, and the two ends of the tank container are supported on the saddle assemblies.

3. The welding fixture for chemical pressure vessels according to claim 2, characterized in that, The saddle assembly includes a saddle that is slidably connected, and the top two sides of the saddle are respectively rotatably connected to support rollers that are positioned on the bottom two sides of the tank container. The top center of the saddle is equipped with a drive wheel structure for driving the tank container to tilt. The drive wheel structure includes a drive wheel bracket, and a tilting wheel supported at the bottom of the tank container is rotatably connected to the drive wheel bracket. The drive wheel bracket is equipped with a motor that drives the tilting wheel.

4. The welding fixture for chemical pressure vessels according to claim 2, characterized in that, The top of the track seat is provided with a sliding groove, and the bottom sides of the saddle seat are fixedly connected to sliding blocks that are slidably connected in the sliding groove. A long track screw that is slidably connected to the slide block is fixedly connected inside the slide groove; The long track screw has a pair of locking nuts that are positioned on both sides of the slide block, which are threaded to both sides.

5. The welding fixture for chemical pressure vessels according to claim 4, characterized in that, The longitudinal cross-sectional shape of the end cap assembly bracket is annular; the clamping wheels are circumferentially distributed on the inner sidewall of the end cap assembly bracket; The bottom of the end cap assembly bracket is fixedly connected to a movable slide, and the bottom sides of the movable slide are fixedly connected to sliding bases, which are slidably connected to a long track screw.

6. The welding fixture for chemical pressure vessels according to claim 5, characterized in that, The primary pushing structure includes an annular pusher seat that matches the shape of the end cap; The two sides of the annular push base are respectively fixedly connected to the support rods, and the support rods are slidably connected to the guide rail rods. The guide rail rods are welded and fixed to the outer wall of the end cap set support. The guide rail is threaded with a push nut that moves the annular push seat.

7. The welding fixture for chemical pressure vessels according to claim 6, characterized in that, The end cap bracket has protrusions welded to both ends of its side wall to fix and connect the guide rail rod.

8. The welding fixture for chemical pressure vessels according to claim 5, characterized in that, The secondary push structure includes long slide rail rods that are fixedly installed at the top of the track seat; The long slide rail rod is slidably connected to the saddle and the movable slide table; The long slide rail is threaded with a nut that pushes the movable slide table to move.

9. The welding fixture for chemical pressure vessels according to claim 1, characterized in that, The clamping wheel is detachably mounted on the end cap assembly bracket.

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