Positioning and clamping device for surfacing of wear-resistant layer of turbine blade

Abstract

The invention discloses a positioning and clamping device for surfacing of a wear-resistant layer of a turbine blade, which comprises an adjusting base, a first clamping block, a second clamping block, a first traction piece, a second traction piece, a first adjusting assembly and a second adjusting assembly, and a driving assembly is arranged on the adjusting base; the first clamping block and the second clamping block are both connected to the adjusting base in a sliding mode. One end of the first traction piece is rotationally connected with the first clamping block, and the other end is rotationally connected with the driving assembly; one end of the second traction piece is rotationally connected with the second clamping block, and the other end is rotationally connected with the driving assembly; the first adjusting assembly is connected to the position, used for clamping the blade crown, of the first clamping block. The second adjusting assembly is connected to the position, used for clamping the blade root, of the second clamping block. The driving assembly drives the first clamping block and the second clamping block to be close to or away from each other. The positioning and clamping device for surfacing of the wear-resistant layer of the turbine blade is better in universality, tools do not need to be replaced when surfacing is conducted on turbine blades of different sizes, and the working efficiency is higher.

Description

Technical Field

[0001] The invention relates to the technical field of turbine blade processing auxiliary devices, and in particular to a positioning clamping device for surfacing welding of a wear-resistant layer of a turbine blade. Background Art

[0002] The low-pressure turbine blades of aircraft engines usually adopt a structure with a serrated crown. Adjacent blades cooperate with each other through the serrated crown damping surface. In order to reduce excessive wear of the damping surface during engine operation, a wear-resistant alloy layer is generally welded on the serrated crown damping surface.

[0003] Due to the small size and complex structure of turbine blades, tooling is required to keep the surfacing surface level and provide support and positioning during the surfacing process. The existing wear-resistant layer surfacing tooling uses tenon positioning. The blade length and blade twist angle of each model are different. Turbine blade tooling of different sizes cannot be universal. New tooling is required to adapt to blades of different sizes and twist angles. The tooling needs to be frequently replaced during the surfacing process, which reduces work efficiency. Summary of the invention

[0004] In view of this, the present invention provides a positioning clamping device for surfacing welding of the wear-resistant layer of turbine blades, which has better versatility and does not require replacement of tooling when surfacing welding turbine blades of different sizes, thereby improving work efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A positioning and clamping device for surfacing welding of a wear-resistant layer of a turbine blade, comprising:

[0007] An adjustment base, wherein a driving assembly is arranged on the adjustment base;

[0008] A first clamping block, slidably connected to the adjustment base, for clamping a blade crown of a turbine blade;

[0009] A second clamping block, slidably connected to the adjustment base, for clamping the blade root of the turbine blade;

[0010] A first traction member, one end of which is rotatably connected to the first clamping block, and the other end of which is rotatably connected to the driving assembly;

[0011] a second traction member, one end of which is rotatably connected to the second clamping block, and the other end of which is rotatably connected to the driving assembly;

[0012] A first adjustment assembly, connected to the position of the first clamping block for clamping the leaf crown, and used for clamping the leaf crowns of different sizes;

[0013] A second adjustment assembly, connected to the position of the second clamping block for clamping the blade root, and used for clamping the blade roots of different sizes;

[0014] The driving assembly is used to drive the first clamping block and the second clamping block to move closer or farther away.

[0015] Optionally, the driving assembly comprises:

[0016] A first transmission shaft connected to two first sliders, wherein the first sliders are rotatably connected to the first traction member;

[0017] A second transmission shaft connected to two second sliders, wherein the second sliders are rotatably connected to the second traction member;

[0018] A driving shaft, drivingly connected to the first transmission shaft and the second transmission shaft, and used for driving the first transmission shaft and the second transmission shaft to rotate;

[0019] The first transmission shaft, the second transmission shaft and the driving shaft are all rotatably arranged on the adjustment base. When the first transmission shaft rotates, the two first sliders are driven to move closer to or away from each other. When the second transmission shaft rotates, the two second sliders are driven to move closer to or away from each other.

[0020] Optionally, the first transmission shaft is provided with a first thread segment and a second thread segment, the first thread segment and the second thread segment are both threadedly connected to the first slider, and the first thread segment and the second thread segment have opposite rotation directions; the second transmission shaft is provided with a third thread segment and a fourth thread segment, the third thread segment and the fourth thread segment are both threadedly connected to the second slider, and the third thread segment and the fourth thread segment have opposite rotation directions.

[0021] Optionally, one end of the first traction member is rotatably connected to the first clamping block via a rotating shaft, and the other end is rotatably connected to the first slider via a rotating shaft; one end of the second traction member is rotatably connected to the second clamping block via a rotating shaft, and the other end is rotatably connected to the second slider via a rotating shaft;

[0022] The axis of each rotating shaft is arranged perpendicular to the bottom surface of the adjusting base.

[0023] Optionally, a driving gear is fixedly connected to the driving shaft, a first transmission gear is arranged on the first transmission shaft, a second transmission gear is arranged on the second transmission shaft, and the driving gear is meshed with the first transmission gear and the second transmission gear;

[0024] The end of the driving shaft is connected with a rotating handle.

[0025] Optionally, a first slide groove and a second slide groove are provided on the adjustment base, the first clamping block is slidably connected in the first slide groove, and the first traction member pulls the first clamping block to slide along the first slide groove; the second clamping block is slidably connected in the second slide groove, and the second traction member pulls the second clamping block to slide along the second slide groove.

[0026] Optionally, a first clamping groove is provided at the top of the first clamping block, a first adjustment groove is provided at the bottom of the first clamping groove, a first clamping block is slidably provided in the first adjustment groove, and the first clamping block is slidably connected to the first adjustment component; a second clamping groove is provided at the top of the second clamping block, a second adjustment groove is provided at the bottom of the second clamping groove, a second clamping block is slidably provided in the second adjustment groove, and the second clamping block is slidably connected to the second adjustment component.

[0027] Optionally, the first adjustment assembly includes a first adjustment rod, one end of the first adjustment rod is fixedly connected to a first adjustment block, the other end of the first adjustment rod is rotatably connected to a first adjustment wheel, a support inclined surface of the first adjustment block is slidably connected to the first clamping block, and the first adjustment block is slidably disposed in the first clamping block;

[0028] The second adjustment assembly includes a second adjustment rod, one end of which is fixedly connected to a second adjustment block, and the other end of which is rotatably connected to a second adjustment wheel, the supporting inclined surface of the second adjustment block is slidably connected to the second clamping block, and the second adjustment block is slidably disposed in the second clamping block;

[0029] The first adjusting wheel and the second adjusting wheel are rollingly connected to the guide structure.

[0030] Optionally, the guide structure includes a guide block, and the guide block is connected to the adjustment base;

[0031] The guide block is provided with a first guide slot and a second guide slot, the first adjusting wheel is rollingly connected in the first guide slot, and the second adjusting wheel is rollingly connected in the second guide slot.

[0032] Optionally, a limiting side wall is provided at one end of the first clamping groove away from the second clamping block, the limiting side wall is used to limit the axial position of the turbine blade, and a vent hole is provided on the limiting side wall.

[0033] It can be seen from the above technical scheme that the positioning and clamping device for surfacing welding of the wear-resistant layer of turbine blades provided by the present invention is adapted to support turbine blades of different lengths by setting a first clamping block and a second clamping block that are slidably connected to the adjustment base, the first clamping block is used to support the blade crown, and the second clamping block is used to support the blade root. The first adjustment component is set at the position where the first clamping block is used to clamp the blade crown, which is used to adapt to blade crowns of different sizes, and the second adjustment component is set at the position where the second clamping block is used to clamp the blade root, which is used to adapt to blade roots of different sizes, thereby achieving reliable clamping of blade crowns and blade roots of turbine blades of different sizes. Through the above structural settings, the positioning and clamping device for surfacing welding of the wear-resistant layer of turbine blades of the present invention has better versatility, and there is no need to replace tooling when surfacing turbine blades of different sizes, and the work efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a schematic diagram of the structure of turbine blades;

[0036] Figure 2 A schematic structural diagram of an angle of a positioning and clamping device for surfacing welding of a wear-resistant layer of a turbine blade provided by an embodiment of the present invention;

[0037] Figure 3 A schematic structural diagram of another angle of the positioning and clamping device for surfacing welding of the wear-resistant layer of a turbine blade provided by an embodiment of the present invention;

[0038] Figure 4 A schematic structural diagram of a third angle of the positioning and clamping device for surfacing welding of the wear-resistant layer of a turbine blade provided by an embodiment of the present invention;

[0039] Figure 5 A schematic diagram of the structure of a turbine blade after being clamped on a positioning and clamping device for surfacing welding of a wear-resistant layer of a turbine blade provided by an embodiment of the present invention;

[0040] Figure 6 A schematic diagram of the structure of a drive assembly provided by an embodiment of the present invention;

[0041] Figure 7 A schematic diagram of the structure in which a blade crown of a turbine blade provided in an embodiment of the present invention is placed on a first clamping block;

[0042] Figure 8 A schematic structural diagram of a first clamping block provided in an embodiment of the present invention;

[0043] Fig. 9 A schematic diagram of a structure in which a blade root of a turbine blade provided in an embodiment of the present invention is placed on a second clamping block;

[0044] Fig.10 A schematic structural diagram of a guide block provided in an embodiment of the present invention.

[0045] in:

[0046] 1. Turbine blades,

[0047] 101. Leaf crown, 102. Leaf root,

[0048] 2. Adjust the base.

[0049] 201, first chute, 202, second chute,

[0050] 3. The first clamping block,

[0051] 301, first clamping groove, 302, first adjustment groove, 303, first clamping block, 304, first slide seat, 305, vent hole,

[0052] 4. The second clamping block,

[0053] 401, second clamping groove, 402, second adjustment groove, 403, second clamping block, 404, second slide seat,

[0054] 5. Connect the blocks.

[0055] 501, first transmission shaft, 502, second transmission shaft, 503, first transmission gear, 504, driving gear, 505, second transmission gear, 506, driving shaft, 507, rotating handle, 508, first slider, 509, second slider,

[0056] 6. The first traction member,

[0057] 7. The second traction member,

[0058] 8. The first adjustment component,

[0059] 801, first adjusting wheel, 802, first adjusting block, 803, first adjusting rod,

[0060] 9. The second adjustment component,

[0061] 901, second adjusting wheel, 902, second adjusting block, 903, second adjusting rod,

[0062] 10. Guide block,

[0063] 1001, a first guide chute, 1002, a second guide chute. DETAILED DESCRIPTION

[0064] The invention discloses a positioning clamping device for surfacing welding of a wear-resistant layer of a turbine blade, which has better versatility and does not require replacement of tooling when surfacing welding turbine blades of different sizes, thereby increasing working efficiency.

[0065] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] See also Figures 1 to 5 The positioning clamping device for wear-resistant layer surfacing of turbine blades of the present invention comprises an adjusting base 2, a first clamping block 3, a second clamping block 4, a first traction member 6, a second traction member 7, a first adjusting assembly 8 and a second adjusting assembly 9. A driving assembly is provided on the adjusting base 2, and the driving assembly is used to drive the first clamping block 3 and the second clamping block 4 to move closer or farther away. The first clamping block 3 is slidably connected to the adjusting base 2, and is used to clamp the blade crown 101 of the turbine blade 1. The second clamping block 4 is slidably connected to the adjusting base 2, and is used to clamp the blade root 102 of the turbine blade 1. One end of the first traction member 6 is rotatably connected to the first clamping block 3, and the other end is rotatably connected to the driving assembly. One end of the second traction member 7 is rotatably connected to the second clamping block 4, and the other end is rotatably connected to the driving assembly. That is, the driving assembly drives the first clamping block 3 to move through the first traction member 6, and the driving assembly drives the second clamping block 4 to move through the second traction member 7, thereby changing the spacing distance between the first clamping block 3 and the second clamping block 4, so as to be suitable for supporting turbine blades 1 of different lengths. The first adjustment component 8 is connected to the first clamping block 3 for clamping the blade crown 101, and is used to clamp blade crowns 101 of different specifications and sizes. The second adjustment component 9 is connected to the second clamping block 4 for clamping the blade root 102, and is used to clamp the blade root 102 of different specifications and sizes.

[0067] The positioning clamping device for surfacing welding of the wear-resistant layer of turbine blades of the present invention is provided with a first clamping block 3 and a second clamping block 4 which are slidably connected to the adjustment base 2, wherein the first clamping block 3 is used to support the blade crown 101, and the second clamping block 4 is used to support the blade root 102, thereby adapting to the support of turbine blades 1 of different lengths. The first adjustment component 8 is provided at the position where the first clamping block 3 is used to clamp the blade crown 101, so as to adapt to blade crowns 101 of different sizes, and the second adjustment component 9 is provided at the position where the second clamping block 4 is used to clamp the blade root 102, so as to adapt to blade roots 102 of different sizes, thereby achieving reliable clamping of the blade crown 101 and blade root 102 of turbine blades 1 of different sizes. Through the above structural arrangement, the positioning clamping device for surfacing welding of the wear-resistant layer of turbine blades of the present invention has better versatility, and there is no need to replace tooling when surfacing turbine blades 1 of different sizes, and the work efficiency is higher.

[0068] The driving assembly includes a first transmission shaft 501, a second transmission shaft 502 and a driving shaft 506. Figure 6 As shown. The first transmission shaft 501 is connected to two first sliders 508, and the first sliders 508 are rotationally connected to the first traction member 6. The second transmission shaft 502 is connected to two second sliders 509, and the second sliders 509 are rotationally connected to the second traction member 7. The driving shaft 506 is transmission-connected to the first transmission shaft 501 and the second transmission shaft 502, and the driving shaft 506 drives the first transmission shaft 501 and the second transmission shaft 502 to rotate. The first transmission shaft 501 rotates, driving the position of the first slider 508 connected thereto to change, thereby pulling the first clamping block 3 to move through the first traction member 6. Similarly, the second transmission shaft 502 rotates, driving the position of the second slider 509 connected thereto to change, thereby pulling the second clamping block 4 to move through the second traction member 7. Specifically, the first traction member 6 and the second traction member 7 are both traction rods. Among them, the first transmission shaft 501, the second transmission shaft 502 and the driving shaft 506 are all rotatably set on the adjustment base 2. When the first transmission shaft 501 rotates, it drives the two first sliders 508 to move closer to or away from each other. When the second transmission shaft 502 rotates, it drives the two second sliders 509 to move closer to or away from each other.

[0069] In order to drive the two first sliders 508 to move closer to or away from each other, the first transmission shaft 501 is provided with a first thread segment and a second thread segment, and the first thread segment and the second thread segment are both threadedly connected to a first slider 508, and the first thread segment and the second thread segment have opposite rotation directions, so that when the first transmission shaft 501 rotates, the two first sliders 508 can be driven to move closer to or away from each other. Similarly, in order to drive the two second sliders 509 to move closer to or away from each other, the second transmission shaft 502 is provided with a third thread segment and a fourth thread segment, and the third thread segment and the fourth thread segment are both threadedly connected to a second slider 509, and the third thread segment and the fourth thread segment have opposite rotation directions, so that when the second transmission shaft 502 rotates, the two second sliders 509 can be driven to move closer to or away from each other.

[0070] In one embodiment, one end of the first traction member 6 is rotatably connected to the first clamping block 3 through a rotating shaft, and the other end is rotatably connected to the first slider 508 through a rotating shaft. One end of the second traction member 7 is rotatably connected to the second clamping block 4 through a rotating shaft, and the other end is rotatably connected to the second slider 509 through a rotating shaft, wherein the axis of each of the rotating shafts is arranged perpendicular to the bottom surface of the adjustment base 2, so that the first traction member 6 and the second traction member 7 can rotate on a surface parallel to the bottom surface of the adjustment base 2. Since two first sliders 508 are provided, two first traction members 6 are also provided, and the spacing distance between one end of the two first traction members 6 connected to the first clamping block 3 is fixed, and the other ends of the two first traction members 6 are respectively connected to one first slider 508. As the distance between the two first sliders 508 changes, the spacing distance between the two ends of the two first traction members 6 changes accordingly, thereby changing the distance between the first clamping block 3 and the first transmission shaft 501. The arrangement and connection method of the two second traction members 7 refer to the first traction member 6, and will not be repeated here.

[0071] Further, the transmission connection structure of the drive shaft 506 and the first transmission shaft 501 and the second transmission shaft 502 is gear transmission. Specifically, the drive shaft 506 is fixedly connected with a drive gear 504, the first transmission shaft 501 is provided with a first transmission gear 503, and the second transmission shaft 502 is provided with a second transmission gear 505. The drive gear 504 is meshed with the first transmission gear 503 and the second transmission gear 505. When the drive gear 504 rotates, the first transmission gear 503 and the second transmission gear 505 are driven to rotate simultaneously, thereby driving the first transmission shaft 501 and the second transmission shaft 502 to rotate. In order to facilitate the rotation of the drive shaft 506, a rotating handle 507 is connected to the end of the drive shaft 506. A connecting block 5 is connected to the adjusting base 2, and an accommodating cavity is provided at one end of the connecting block 5 close to the adjusting base 2, and the drive gear 504, the first transmission gear 503 and the second transmission gear 505 are all arranged in the accommodating cavity of the connecting block 5. One end of the driving shaft 506 is rotatably connected to the connecting block 5, and the other end is rotatably connected to the adjusting base 2. The end of the driving shaft 506 extending out of the connecting block 5 is connected to a rotating handle 507. In order to lock the rotating handle 507 rotated into place, a limiting through hole is provided on the rotating handle 507, and a plurality of evenly distributed limiting slots are provided on the surface of the connecting block 5 close to the rotating handle 507. The slot center of the limiting slot corresponds to the hole center of the limiting through hole. The rotating handle 507 is limited by the limiting column inserted in the limiting through hole and the limiting slot to prevent the rotating handle 507 from displacement during the surfacing process.

[0072] In order to guide and limit the sliding of the first clamping block 3 and the second clamping block 4, the adjustment base 2 is provided with a first slide groove 201 and a second slide groove 202. A first slide seat 304 is fixedly provided at the bottom of the first clamping block 3. Figure 7 and Figure 8 As shown, the first slide 304 is slidably connected in the first slide groove 201, the first traction member 6 is rotatably connected to the first slide 304, and the first traction member 6 pulls the first clamping block 3 to slide along the first slide groove 201 through the first slide 304. The bottom of the second clamping block 4 is fixedly provided with a second slide 404, as shown in FIG. Fig. 9 The second slide seat 404 is slidably connected in the second slide groove 202 , the second traction member 7 is rotationally connected to the second slide seat 404 , and the second traction member 7 pulls the second clamping block 4 to slide along the second slide groove 202 through the second slide seat 404 .

[0073] In order to clamp the turbine blade 1, the top of the first clamping block 3 is provided with a first clamping groove 301, the bottom of the first clamping groove 301 is provided with a first adjustment groove 302, a first clamping block 303 is slidably provided in the first adjustment groove 302, and the first clamping block 303 is slidably connected to the first adjustment component 8. Specifically, the bottom end of the first clamping block 303 is slidably connected to the first adjustment groove 302, and the top side of the first clamping block 303 is slidably connected to the first adjustment component 8, as shown in FIG. Figure 7 As shown, the first adjustment component 8 pushes the first clamping block 303 to slide along the first adjustment groove 302, and the surface of the first clamping block 303 close to the groove cavity of the first clamping groove 301 is used to support a side surface of the blade crown 101 of the turbine blade 1. The second clamping groove 401 is provided at the top of the second clamping block 4, and the second adjustment groove 402 is provided at the bottom of the second clamping groove 401. The second clamping block 403 is slidably provided in the second adjustment groove 402, and the second clamping block 403 is slidably connected to the second adjustment component 9. Specifically, the bottom end of the second clamping block 403 is slidably connected to the second adjustment groove 402, and the top side surface of the second clamping block 403 is slidably connected to the second adjustment component 9, as shown in FIG. Fig. 9 As shown, the second adjustment assembly 9 pushes the second clamping block 403 to slide along the second adjustment groove 402 , and the surface of the second clamping block 403 close to the groove cavity of the second clamping groove 401 is used to support one side surface of the blade root 102 of the turbine blade 1 .

[0074] Specifically, the first adjustment component 8 includes a first adjustment rod 803, one end of which is fixedly connected to the first adjustment block 802, and the other end of which is rotatably connected to the first adjustment wheel 801. Figure 7 and Figure 8 As shown. The support slope of the first adjustment block 802 is slidably connected to the first clamping block 303, the first adjustment block 802 is slidably set in the cavity of the first clamping block 3 close to the first slide 304, and the first adjustment block 802 is slidably set on the top surface of the first slide 304. The second adjustment component 9 includes a second adjustment rod 903, one end of the second adjustment rod 903 is fixedly connected to the second adjustment block 902, and the other end is rotatably connected to the second adjustment wheel 901, the support slope of the second adjustment block 902 is slidably connected to the second clamping block 403, the second adjustment block 902 is slidably set in the cavity of the second clamping block 4 close to the second slide 404, and the second adjustment block 902 is slidably set on the top surface of the second slide 404. In order to control the pushing distance of the first adjustment block 802 and the second adjustment block 902, the first adjustment wheel 801 and the second adjustment wheel 901 are rollingly connected to the guide structure.

[0075] Furthermore, the guide structure includes a guide block 10, and the guide block 10 is connected to the adjustment base 2. The guide block 10 is provided with a first guide slot 1001 and a second guide slot 1002. Fig.10As shown, the first adjusting wheel 801 is rollingly connected in the first guide slot 1001, and the second adjusting wheel 901 is rollingly connected in the second guide slot 1002. The guide block 10 is located above the connecting block 5. The shape of the bottom surface of the first guide slot 1001 and the second guide slot 1002 is set by the designer according to the needs.

[0076] In order to facilitate the application of protective gas during the cladding process, a limiting side wall is provided at one end of the first clamping groove 301 away from the second clamping block 4, and the limiting side wall is used to limit the axial position of the turbine blade 1. The limiting side wall is provided with a vent hole 305. The vent hole 305 is a through hole connected to the first clamping groove 301 and connected to the gas source. Protective gas is applied during the cladding process through the vent hole 305 to prevent severe oxidation.

[0077] When the positioning clamping device for surfacing the wear-resistant layer of a turbine blade of the present invention is used, the handle 507 is driven to rotate, so that the drive shaft 506 rotates, and the first transmission shaft 501 and the second transmission shaft 502 rotate, so that the first clamping block 3 and the second clamping block 4 are moved closer or farther away, until they are adapted to the length of the turbine blade 1. In the above process, when the first clamping block 3 and the second clamping block 4 slide, the first adjustment wheel 801 rolls in the first guide slot 1001, so that the first adjustment rod 803 moves forward and backward along the rod axis direction, thereby pushing the first clamping block 303 to move, changing the clamping space of the first clamping slot 301 to the blade crown 101, until it is adapted to the size of the blade crown 101. Similarly, the second adjustment wheel 901 moves in the second guide slot 1002, so that the second adjustment rod 903 moves forward and backward along the rod axis direction, thereby pushing the second clamping block 403 to move, changing the clamping space of the second clamping slot 401 to the blade root 102, until it is adapted to the size of the blade root 102. Since the sizes of turbine blades 1 of different specifications are all enlarged or reduced in proportion, the setting of the guide block 10 in this embodiment can adjust the clamping space between the first clamping groove 301 and the second clamping groove 401 while adjusting the distance between the first clamping block 3 and the second clamping block 4, thereby more efficiently adapting to the positioning of turbine blades 1 of different sizes.

[0078] In the description of this solution, it should be understood that the terms "upper", "lower", "vertical", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this solution.

[0079] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this solution, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0080] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0081] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A positioning and clamping device for surfacing welding of wear-resistant layers of turbine blades, characterized in that: include: An adjustment base, wherein a driving assembly is arranged on the adjustment base; A first clamping block, slidably connected to the adjustment base, for clamping a blade crown of a turbine blade; A second clamping block, slidably connected to the adjustment base, for clamping the blade root of the turbine blade; A first traction member, one end of which is rotatably connected to the first clamping block, and the other end of which is rotatably connected to the driving assembly; a second traction member, one end of which is rotatably connected to the second clamping block, and the other end of which is rotatably connected to the driving assembly; A first adjustment assembly, connected to the position of the first clamping block for clamping the leaf crown, and used for clamping the leaf crowns of different sizes; A second adjustment assembly, connected to the position of the second clamping block for clamping the blade root, and used for clamping the blade roots of different sizes; The driving assembly is used to drive the first clamping block and the second clamping block to move closer or farther away.

2. The positioning and clamping device for surfacing welding of wear-resistant layers of turbine blades according to claim 1, characterized in that: The drive assembly comprises: A first transmission shaft connected to two first sliders, wherein the first sliders are rotatably connected to the first traction member; A second transmission shaft connected to two second sliders, wherein the second sliders are rotatably connected to the second traction member; A driving shaft, drivingly connected to the first transmission shaft and the second transmission shaft, and used for driving the first transmission shaft and the second transmission shaft to rotate; The first transmission shaft, the second transmission shaft and the driving shaft are all rotatably arranged on the adjustment base. When the first transmission shaft rotates, the two first sliders are driven to move closer to or away from each other. When the second transmission shaft rotates, the two second sliders are driven to move closer to or away from each other.

3. The positioning and clamping device for surfacing welding of wear-resistant layers of turbine blades according to claim 2, characterized in that: The first transmission shaft is provided with a first thread segment and a second thread segment, and the first thread segment and the second thread segment are both threadedly connected to the first slider, and the first thread segment and the second thread segment have opposite rotation directions; the second transmission shaft is provided with a third thread segment and a fourth thread segment, and the third thread segment and the fourth thread segment are both threadedly connected to the second slider, and the third thread segment and the fourth thread segment have opposite rotation directions.

4. The positioning and clamping device for surfacing welding of wear-resistant layers of turbine blades according to claim 2, characterized in that: One end of the first pulling member is rotatably connected to the first clamping block via a rotating shaft, and the other end is rotatably connected to the first slider via a rotating shaft; one end of the second pulling member is rotatably connected to the second clamping block via a rotating shaft, and the other end is rotatably connected to the second slider via a rotating shaft; The axis of each rotating shaft is arranged perpendicular to the bottom surface of the adjusting base.

5. The positioning and clamping device for surfacing welding of wear-resistant layers of turbine blades according to claim 2, characterized in that: The driving shaft is fixedly connected with a driving gear, the first transmission shaft is provided with a first transmission gear, the second transmission shaft is provided with a second transmission gear, and the driving gear is meshed with the first transmission gear and the second transmission gear; The end of the driving shaft is connected with a rotating handle.

6. The positioning and clamping device for surfacing welding of wear-resistant layers of turbine blades according to claim 1, characterized in that: The adjustment base is provided with a first slide groove and a second slide groove, the first clamping block is slidably connected in the first slide groove, and the first traction member pulls the first clamping block to slide along the first slide groove; the second clamping block is slidably connected in the second slide groove, and the second traction member pulls the second clamping block to slide along the second slide groove.

7. The positioning and clamping device for surfacing welding of wear-resistant layers of turbine blades according to claim 1, characterized in that: A first clamping groove is provided on the top of the first clamping block, a first adjustment groove is provided on the bottom of the first clamping groove, a first clamping block is slidably provided in the first adjustment groove, and the first clamping block is slidably connected to the first adjustment component; a second clamping groove is provided on the top of the second clamping block, a second adjustment groove is provided on the bottom of the second clamping groove, a second clamping block is slidably provided in the second adjustment groove, and the second clamping block is slidably connected to the second adjustment component.

8. The positioning and clamping device for surfacing welding of wear-resistant layers of turbine blades according to claim 7, characterized in that: The first adjustment assembly includes a first adjustment rod, one end of the first adjustment rod is fixedly connected to a first adjustment block, and the other end is rotatably connected to a first adjustment wheel, a support inclined surface of the first adjustment block is slidably connected to the first clamping block, and the first adjustment block is slidably disposed in the first clamping block; The second adjustment assembly includes a second adjustment rod, one end of which is fixedly connected to a second adjustment block, and the other end of which is rotatably connected to a second adjustment wheel, the supporting inclined surface of the second adjustment block is slidably connected to the second clamping block, and the second adjustment block is slidably disposed in the second clamping block; The first adjusting wheel and the second adjusting wheel are rollingly connected to the guide structure.

9. The positioning and clamping device for surfacing welding of wear-resistant layers of turbine blades according to claim 8, characterized in that: The guide structure comprises a guide block, and the guide block is connected to the adjustment base; The guide block is provided with a first guide slot and a second guide slot, the first adjusting wheel is rollingly connected in the first guide slot, and the second adjusting wheel is rollingly connected in the second guide slot.

10. The positioning and clamping device for surfacing welding of wear-resistant layers of turbine blades according to claim 7, characterized in that: A limiting side wall is arranged at one end of the first clamping groove away from the second clamping block. The limiting side wall is used to limit the axial position of the turbine blade, and a vent hole is arranged on the limiting side wall.

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