Welding fixture for wear-resistant block of blade

Abstract

The utility model relates to the technical field of welding clamps, in particular to a blade wear-resistant block welding clamp which comprises a shell and an adjusting assembly, a fifth through hole is formed in the middle of the shell, a first through hole is formed in the side wall of the shell, and the adjusting assembly is connected with the shell. One end of the adjusting assembly penetrates through the first through hole and extends into the fifth through hole. The fifth through hole is formed in the middle of the shell, so that the blade needing to be welded is placed, the first through hole is formed in the side wall of the shell, and the adjusting assembly penetrates through the first through hole and extends into the fifth through hole, so that the corresponding positions of the wear-resisting block and the blade are pressed in an abutting mode, and the pressing force of attaching of the wear-resisting block and the blade can be adjusted through the adjusting assembly; and the requirement on the pressing force of the brazed wear-resistant block is met. The clamp is convenient to operate, the attaching pressing force of the wear-resisting block can be effectively adjusted according to the requirement, the requirement of welding machining is met, and the qualified rate of welding is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding fixture technical field, concretely relates to a blade wear -resistant block welding fixture. BACKGROUND

[0002] The turbine blade of an aero-engine will rub against each other when the engine is running, and in order to improve the service life of the blade, a wear-resistant layer is usually welded on the meshing surface of the blade crown contact. The wear-resistant block and the blade welding surface are usually placed in the middle of the nickel foil and then welded after being welded. Some blade design requires the wear-resistant layer to have a certain pressing force, and the existing processing method cannot meet the technical requirements. Therefore, a turbine blade wear-resistant block welding fixture is needed, which can effectively adjust the pressing force of the wear-resistant block, press the wear-resistant block conveniently and quickly, and meet the pressing force requirements of the wear-resistant block. SUMMARY

[0003] The technical problem to be solved by the utility model is how to conveniently and quickly provide the required pressing force for the welded wear-resistant block.

[0004] The technical scheme for solving the above technical problem is as follows: a blade wear-resistant block welding fixture, comprising a shell and an adjusting assembly, a fifth through hole is arranged in the middle of the shell, a first through hole is arranged in the side wall of the shell, the adjusting assembly is connected with the shell, one end of the adjusting assembly penetrates through the first through hole and extends into the fifth through hole.

[0005] The utility model has the advantages that: the fifth through hole is arranged in the middle of the shell, the blade to be welded is placed, the first through hole is arranged in the side wall of the shell, the adjusting assembly penetrates through the first through hole and extends into the fifth through hole, so that the corresponding positions of the wear-resistant block and the blade are abutted and pressed, the pressing force of the wear-resistant block and the blade can be adjusted through the adjusting assembly, the pressing force requirements of the wear-resistant block can be met, the fixture is convenient to operate, the pressing force of the wear-resistant block can be effectively adjusted according to requirements, the requirements of welding processing can be met, and the qualified rate of welding is improved.

[0006] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0007] Further, the adjusting assembly comprises a pull rod, a spring, a bushing and a screw plug, one end of the bushing is located in the first through hole and fixedly connected with the shell, a second through hole is formed in the bushing, the pull rod is arranged in the second through hole, one end of the pull rod passes through the first through hole and extends into the fifth through hole, the spring is sleeved on the middle part of the pull rod, the other end of the bushing is provided with an internal thread, the screw plug is provided with an external thread, a third through hole is formed in the screw plug, the screw plug is sleeved on the other end of the pull rod and threadedly connected with the bushing, and the screw plug, the spring and the pull rod are sequentially abutted.

[0008] The beneficial effect of the above further scheme is that: by arranging the second through hole on the bushing, the pull rod is arranged in the second through hole, and the spring is sleeved on the pull rod, and then the elastic force generated by the compression of the spring acts on the pull rod and pushes the pull rod after the pull rod is pulled, so that the pull rod is attached and pressed to the wear-resistant block and the blade, when the pressing force is too large or too small, the screw plug is screwed, so that the compression amount of the spring can be adjusted, and then the pressing force of the wear-resistant block attached to the blade can be adjusted to meet the welding requirement, which is convenient to operate and can be adjusted at any time according to the welding requirement.

[0009] Further, the shell is provided with a locking hole in the side wall, the locking hole is perpendicular to the first through hole, and a screw passes through the locking hole and is connected with the shell, and one end of the screw abuts against the bushing.

[0010] The beneficial effect of the above further scheme is that: by arranging the locking hole in the side wall of the shell, and passing the screw through the locking hole, one end of the screw abuts against the bushing, so that the connection between the bushing and the shell is more stable.

[0011] Further, the pull rod comprises a sliding rod and a pressing rod, one end of the sliding rod is provided with a slot hole, one end of the pressing rod is fixed in the slot hole, and the other end of the pressing rod passes through the first through hole and extends into the fifth through hole.

[0012] The beneficial effect of the above further scheme is that: by arranging the sliding rod and the pressing rod, and connecting one end of the pressing rod with the sliding rod and the other end of the pressing rod with the wear-resistant block, the wear-resistant block and the blade can be better attached.

[0013] Further, a button is arranged, the button is provided with a fourth through hole, and the other end of the sliding rod passes through the fourth through hole and is detachably connected with the button.

[0014] The beneficial effect of the above further scheme is that: by arranging the button, the operation of pulling the pull rod is more convenient.

[0015] Further, the slide rod is provided with a sixth through hole at the other end, and the pin is arranged in the sixth through hole and detachably connected with the slide rod.

[0016] The beneficial effect of the further scheme is that the pin can better fix the button and prevent the button from falling off.

[0017] Further, one end of the screw plug is provided with a groove, and the groove is arranged along the radial direction of the screw plug.

[0018] The beneficial effect of the further scheme is that the groove arranged on the screw plug can make the operation more convenient, save time and effort, and improve work efficiency when the screw plug needs to be screwed to adjust the pressing force.

[0019] Further, the housing is provided with the first through hole on both sides, and the adjusting assembly is two, and the two adjusting assemblies and the two first through holes are arranged one by one.

[0020] The beneficial effect of the further scheme is that the first through hole is arranged on both sides of the housing, and the adjusting assembly is arranged one by one with the first through hole, so that the welding of the part of the blade that needs to be welded can be carried out at the same time, and the work efficiency is improved.

[0021] Further, the two adjusting assemblies are different in axis.

[0022] The beneficial effect of the further scheme is that the two adjusting assemblies are different in axis, so that the adjusting assembly can be accurately welded to the corresponding position of the blade, and the qualified rate of the blade welding is improved.

[0023] Further, the housing is provided with a blocking pin on the side wall, and the blocking pin is fixedly connected with the housing.

[0024] The beneficial effect of the further scheme is that the blocking pin is arranged on the side wall of the housing, and the blade is clamped and fixed, so that the blade is clamped more stably, and the welding work can be carried out smoothly. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a front view of the blade wear-resistant block welding clamp of the utility model;

[0026] Figure 2 It is a F-F sectional view of the blade wear-resistant block welding clamp of the utility model;

[0027] Figure 3 It is a schematic view of the internal structure of the blade wear-resistant block welding clamp of the utility model;

[0028] Figure 4The clamping state schematic view of the blade wear-resistant block welding fixture of the utility model.

[0029] Figure 5 The screw plug schematic view of the blade wear-resistant block welding fixture of the utility model.

[0030] In the drawings, the component list represented by each sign is as follows:

[0031] 1, shell; 2, bushing; 3, pressing rod; 4, button; 5, fifth through hole; 6, screw plug; 7, sliding rod; 8, tool sleeve; 9, first blocking pin; 10, spring; 11, second blocking pin; 12, screw; 13, pin; 14, third blocking pin; 15, third through hole; 16, groove; 17, first through hole; 18, second through hole; 19, connecting rod; 20, handle; 21, protrusion; 100, blade; 110, wear-resistant block. DETAILED DESCRIPTION

[0032] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used to explain the utility model and are not used to limit the scope of the utility model.

[0033] As Figures 1-5 shown, the embodiment provides a kind of blade wear-resistant block welding fixture, including shell 1 and adjusting assembly, the fifth through hole 5 is arranged in the middle of the shell 1, the sidewall of the shell 1 is provided with first through hole 17, the adjusting assembly is connected with the shell 1, one end of the adjusting assembly passes through the first through hole 17 and extends into the fifth through hole 5.

[0034] By being provided with the fifth through hole 5 in the middle of shell 1, the blade 100 required to be welded is placed, and the first through hole 17 is provided in the sidewall of shell 1, so that the adjusting assembly passes through the first through hole 17 and extends into the fifth through hole 5, so that the corresponding position of wear-resistant block 110 and blade 100 is abutted and pressed, and the adjusting assembly can also adjust the pressing force of wear-resistant block 110 and blade 100. It meets the brazing wear-resistant block 110 pressing force requirement. The clamp is easy to operate, and the wear-resistant block 110 can be effectively adjusted according to the requirement of the pressing force, so as to meet the requirement of welding processing and improve the qualified rate of welding.

[0035] Specifically, the material of shell 1 is tungsten.

[0036] Alternatively, the material of shell 1 is silicon carbide, chromium alloy and other high-temperature-resistant metal materials or non-metallic materials.

[0037] On the basis of any of the above solutions, the adjusting assembly comprises a pull rod, a spring 10, a bushing 2 and a plug 6, one end of the bushing 2 is located in the first through hole 17 and is fixedly connected with the shell 1, a second through hole 18 is formed in the bushing 2, the pull rod is arranged in the second through hole 18, one end of the pull rod passes through the first through hole 17 and extends into the fifth through hole 5, the spring 10 is sleeved on the middle part of the pull rod, the other end of the bushing 2 is provided with an internal thread, the plug 6 is provided with an external thread, a third through hole 15 is formed in the plug 6, the plug 6 is sleeved on the other end of the pull rod and is threadedly connected with the bushing 2, and the plug 6, the spring 10 and the pull rod abut in sequence.

[0038] By arranging the second through hole 18 on the bushing 2 and arranging the pull rod in the second through hole 18, and sleeving the spring 10 on the pull rod, when the wear-resistant layer of the blade 100 needs to be welded, the blade 100 is first placed on the clamp, the wear-resistant block 110 is placed at the corresponding position of the blade 100 by pulling the pull rod outward, the pull rod is loosened, the elastic force of the spring 10 acts on the pull rod and pushes the pull rod, so that the pull rod generates a pressing force on the wear-resistant block 110, and then the wear-resistant block 110 and the blade 100 are attached. When the pressing force is too large or too small, the pressing force is adjusted to meet the welding requirements by screwing the plug 6, the operation is convenient, and the pressing force of the wear-resistant block 110 attached to the blade 100 can be adjusted at any time according to the welding requirements.

[0039] In a specific example, the blade 100 to be welded is first placed on the clamp, the wear-resistant block 110 is placed at the corresponding position of the blade 100 by pulling the pull rod outward, the pull rod is loosened, the elastic force of the spring 10 acts on the pull rod and pushes the pull rod, so that the pull rod generates a pressing force on the wear-resistant block 110, and then the wear-resistant block 110 and the blade 100 are attached. At this time, the pressing force of the pull rod can be detected, if the pressing force meets the welding requirements, welding work is performed; when the pressing force of the pull rod on the wear-resistant block 110 is large, the plug 6 is unscrewed by a part; when the pressing force of the pull rod on the wear-resistant block 110 is small, the plug 6 is screwed in by a part, so that the pressing force is adjusted to a value meeting the requirements. The clamp can provide a pressing force meeting the requirements according to actual needs, and ensure the stability of welding.

[0040] On the basis of any of the above solutions, a screw 12 is further arranged, a locking hole is formed in the side wall of the shell 1, the locking hole is perpendicular to the first through hole 17, the screw 12 passes through the locking hole and is connected with the shell 1, and one end of the screw 12 abuts against the bushing 2.

[0041] By arranging the locking hole in the side wall of the shell 1 and passing the screw 12 through the locking hole, one end of the screw 12 abuts against the bushing 2, so that the connection between the bushing 2 and the shell 1 is more stable.

[0042] On the basis of any of the above solutions, the pull rod comprises a sliding rod 7 and a pressing rod 3, one end of the sliding rod 7 is provided with a slot hole, one end of the pressing rod 3 is fixed in the slot hole, and the other end of the pressing rod 3 penetrates through the first through hole 17 and extends into the fifth through hole 5.

[0043] By arranging the sliding rod 7 and the pressing rod 3, and connecting one end of the pressing rod 3 with the sliding rod 7 and the other end of the pressing rod 3 with the wear-resistant block 110, the wear-resistant block 110 and the blade 100 can be better adhered; meanwhile, the pressing rod 3 is in contact with the wear-resistant block 110, and when welding, the wear-resistant block 110 is melted at high temperature under the action of an electric arc, so that the wear-resistant block 110 is adhered to the pressing rod 3, and the pressing rod 3 may be deformed after a long time, thereby affecting the abutment and compression of the wear-resistant block 110 by the pressing rod 3 and affecting the welding work, and by arranging the pull rod as the sliding rod 7 and the pressing rod 3, the pressing rod 3 can be conveniently replaced when the pressing rod 3 is worn.

[0044] Specifically, the material of the pressing rod 3 is tungsten.

[0045] Alternatively, the material of the pressing rod 3 is silicon carbide, chromium alloy or other high-temperature-resistant metal materials or non-metal materials.

[0046] On the basis of any of the above solutions, a button 4 is further arranged, the button 4 is provided with a fourth through hole, and the other end of the sliding rod 7 penetrates through the fourth through hole and is detachably connected with the button 4.

[0047] By arranging the button 4, the operation is more convenient when the pull rod is pulled.

[0048] On the basis of any of the above solutions, a pin 13 is further arranged, the other end of the sliding rod 7 is provided with a sixth through hole, and the pin 13 is arranged in the sixth through hole and is detachably connected with the sliding rod 7.

[0049] By arranging the pin 13, the button 4 can be better fixed to prevent the button 4 from falling off.

[0050] On the basis of any of the above solutions, one end of the screw plug 6 is provided with a groove 16, and the groove 16 is arranged along the radial direction of the screw plug 6.

[0051] By arranging the groove 16 on the screw plug 6, the operation is more convenient, time and labor are saved, and the work efficiency is improved when the screw plug 6 needs to be screwed to adjust the compression force.

[0052] Specifically, a tool sleeve 8 is further arranged, the tool sleeve 8 comprises a connecting rod 19, a handle 20 and a protrusion 21 matched with the groove 16, so as to be used in cooperation with the screw plug 6.

[0053] In one specific example, when the pressing force does not meet the welding requirements by detection, the pressing force needs to be adjusted. When the pressing force of the pressing rod 3 on the wear block 110 is too large, the pin 13 and the button 4 are removed, and the screw plug 6 is rotated out by a part using the tool sleeve 8; on the contrary, the screw plug 6 is rotated in by a part, so as to adjust the pressing force to a required value.

[0054] On the basis of any of the above solutions, optionally, the adjusting assembly is at least one, when the adjusting assembly is one, it is suitable for the case that the wear block 110 needs to be welded to one part of the blade 100, and the adjusting assembly can also be two, three or more, to adapt to the case that the wear block 110 needs to be welded to the blade 100 actually; in one specific example, the first through hole 17 is arranged on both sides of the shell 1, and the adjusting assembly is two, and the two adjusting assemblies and the two first through holes 17 are arranged one by one.

[0055] By arranging the first through hole 17 on both sides of the shell 1 and arranging the adjusting assembly one by one corresponding to the first through hole 17, the parts of the blade 100 that need to be welded can be welded at the same time, and the work efficiency is improved.

[0056] On the basis of any of the above solutions, the two adjusting assemblies are different shafts.

[0057] The two adjusting assemblies are different shafts, so that the adjusting assembly corresponds to the part of the blade 100 that needs to be welded, and the corresponding position of the blade 100 can be accurately welded, and the qualified rate of the blade 100 welding is improved.

[0058] Specifically, according to the structure of the blade 100 and the part of the blade 100 to be welded, the two adjusting assemblies can be coaxial or different shafts.

[0059] On the basis of any of the above solutions, a blocking pin is further arranged on the side wall of the shell 1, and the blocking pin is fixedly connected with the shell 1.

[0060] By arranging the blocking pin on the side wall of the shell 1, the blade 100 is clamped and fixed, so that the blade 100 is clamped more stably, and the welding work is ensured to be carried out smoothly.

[0061] Specifically, the first blocking pin 9 and the third blocking pin 14 are arranged on one side of the shell 1, and the second blocking pin 11 is arranged on the other side of the shell 1.

[0062] In one specific example, the steps of welding the wear-resistant layer to the blade crown meshing surface of the batch of blades 100 of the same specification and the same welding requirement are as follows:

[0063] Step 1: Adjust the appropriate pressing force according to the actual requirements:

[0064] S1, one end of the blade 100 is put into the fifth through hole 5, and is fixed by the blocking pin, as shown in Figure 4

[0065] S2, the button 4 is pulled apart, at this time the spring 10 is further compressed, the wear-resistant block 110 is put in the corresponding position of the blade 100, the button 4 is released, at this time the force of the spring 10 acts on the slide rod 7, the slide rod 7 drives the pressing rod 3 to abut against the wear-resistant block 110, so that the wear-resistant block 110 is attached to the blade 100;

[0066] S3, the pressing force of the pressing rod 3 at this time is detected, if it meets the welding requirements, the subsequent welding work is directly carried out; if the pressing force is larger, the pin 13 and the button 4 are taken out, the tool sleeve 8 is used to rotate the screw plug 6 out a part; otherwise, the screw plug 6 is rotated in a part, and the subsequent welding work is carried out after adjusting to meet the welding requirements.

[0067] Step two, orderly welding work is carried out on the wear-resistant layer of the blade:

[0068] A1, one end of the blade 100 is put into the fifth through hole 5, and is fixed by the blocking pin;

[0069] A2, the button 4 is pulled apart, at this time the spring 10 is further compressed, the wear-resistant block 110 is put in the corresponding position of the blade 100, the button 4 is released, at this time the force of the spring 10 acts on the slide rod 7, the slide rod 7 drives the pressing rod 3 to abut against the wear-resistant block 110, so that the wear-resistant block 110 is attached to the blade 100 and is welded;

[0070] A3, after welding, the button 4 is pulled apart, and the blade 100 is taken out;

[0071] A4, steps A1, A2 and A3 are repeated until the welding work of the wear-resistant layer of all the blades 100 is completed.

[0072] The device is convenient to operate, and can effectively adjust the pressing force of the wear-resistant block 110 and the blade 100 according to the actual welding requirements, so that it meets the requirements of welding processing, is suitable for welding of the wear-resistant layer of the blade with different pressing force requirements of the wear-resistant block 110, improves the applicability of the clamp, ensures the stability during processing, and improves the qualified rate of welding.

[0073] ​In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0074] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0075] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0076] In the utility model, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0077] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0078] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and modifications to the above embodiments within the scope of the present application.

Claims

1. A blade tip shroud welding fixture, characterized by, The utility model provides a kind of adjustable shell, including shell (1) and adjusting assembly, fifth through hole (5) is arranged in the middle of shell (1), the sidewall of shell (1) is opened with first through hole (17), adjusting assembly is connected with shell (1), one end of adjusting assembly passes through first through hole (17) and extends into fifth through hole (5) inside.

2. The blade tip shroud welding fixture of claim 1, wherein, The adjusting assembly includes a pull rod, a spring (10), a bushing (2), and a screw plug (6). One end of the bushing (2) is located in the first through hole (17) and is fixedly connected with the shell (1). A second through hole (18) is formed in the bushing (2). The pull rod is arranged in the second through hole (18). One end of the pull rod passes through the first through hole (17) and extends into the fifth through hole (5). The spring (10) is sleeved on the middle part of the pull rod. The screw plug (6) is sleeved on the other end of the pull rod and is threadedly connected with the bushing (2). The screw plug (6), the spring (10), and the pull rod are sequentially abutted.

3. The blade tip shroud welding fixture of claim 2, wherein, A screw (12) is further included. A locking hole is formed in the sidewall of the shell (1). The locking hole is perpendicular to the first through hole (17). The screw (12) passes through the locking hole and is connected with the shell (1). One end of the screw (12) abuts against the bushing (2).

4. The blade tip shroud welding fixture of claim 2, wherein, The pull rod includes a sliding rod (7) and a pressing rod (3). One end of the sliding rod (7) is provided with a slot hole. One end of the pressing rod (3) is fixed in the slot hole. The other end of the pressing rod (3) passes through the first through hole (17) and extends into the fifth through hole (5).

5. The blade tip shroud welding fixture of claim 4, wherein, A button (4) is further included. A fourth through hole is formed in the button (4). The other end of the sliding rod (7) passes through the fourth through hole and is detachably connected with the button (4).

6. The blade tip shroud welding fixture of claim 4, wherein, A pin (13) is further included. A sixth through hole is formed in the other end of the sliding rod (7). The pin (13) is arranged in the sixth through hole and is detachably connected with the sliding rod (7).

7. The blade tip shroud welding fixture of claim 2, wherein, One end of the screw plug (6) is provided with a groove (16). The groove (16) is arranged along the radial direction of the screw plug (6).

8. The vane wear block welding fixture of claim 1, wherein, The first through hole (17) is arranged on both sides of the shell (1). There are two adjusting assemblies. The two adjusting assemblies and the two first through holes (17) are arranged one-to-one.

9. The vane wear block welding fixture of claim 8, wherein, The two adjusting assemblies are different in axis.

10. The blade tip shroud welding fixture of any one of claims 1-9, wherein, A blocking pin is further arranged on the sidewall of the shell (1). The blocking pin is fixedly connected with the shell (1).

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