Excavator tail support welding jig
By designing the tail support welding fixture of the excavator without additional tooling and fixtures, the welding workpiece is fixed using side limits and rear-stop devices, the problems of manual measurement and assembly errors are solved, and the rapid and accurate welding process is achieved, saving Resources and improve product yields.
Patent Information
- Application Number
- CN202421150491.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-24
AI Technical Summary
Before the tail support of the excavator is used, it is necessary to manually measure and draw lines and assemble them in sections, resulting in accumulated work errors and inability to effectively detect the distortion and deformation of the product. The error is large, resulting in unqualified welding.
A welding fixture for the tail support of the excavator without additional tooling and fixtures is designed, including base, side limiting device, rear-stop device and pads, through which the welding workpieces are fixed and supported to avoid measuring and drawing lines. , ensure the accuracy and stability of assembly.
It realizes rapid assembly and welding, saves working hours and manpower, ensures yield, reduces the impact of backplane cutting errors, and greatly improves operating efficiency and product yield.
Smart Images
Figure CN222344654U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding, in particular to a welding fixture for a tail support of an excavator. Background Art
[0002] Before the use of this welding jig, the tail support of the excavator needed to be manually measured and marked. The left and right parts were pre-assembled into blocks and then assembled with the middle large plate. Manual marking resulted in cumulative work errors, and the segmented assembly could not effectively detect the distortion of the product. The large error could not be corrected after welding, resulting in defective products. Utility Model Content
[0003] To this end, the technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a welding jig for the tail support of an excavator, which does not require additional tooling and clamps, can be quickly assembled and welded, and does not require measurement, drawing lines or markings, thereby saving working hours, manpower and financial resources, and ensuring the yield rate.
[0004] In order to solve the above technical problems, the utility model provides a welding fixture for the tail support of an excavator, comprising:
[0005] Base;
[0006] The side limiting device comprises a first side limiting seat and a second side limiting seat, which are respectively arranged on both sides of the base.
[0007] A rear baffle device, comprising a first rear baffle plate and a second rear baffle plate, both of which are vertically arranged on the base and used to fix and support the workpiece to be welded from the rear side;
[0008] A cushion block is arranged on the base and is used to support the workpiece to be welded.
[0009] In one embodiment of the utility model, an intermediate support device is also included, which is used to support and limit the workpiece from the inner side of the workpiece to be welded.
[0010] In one embodiment of the utility model, the intermediate support device includes a first intermediate support plate and a second intermediate support plate, which are respectively arranged on the base, and the first intermediate support plate is spaced apart from the first side limit seat; the second intermediate support plate is spaced apart from the second side limit seat.
[0011] In one embodiment of the present invention, a triangular reinforcement plate is provided on the first middle support plate.
[0012] In one embodiment of the present invention, fixing bolts are disposed on the tops of the first rear baffle and the second rear baffle.
[0013] In one embodiment of the present invention, triangular reinforcement plates are provided on the first rear baffle and the second rear baffle.
[0014] In one embodiment of the utility model, the first side limit seat and the second side limit seat both include a first side block, a second side block and a reinforcement plate, the first side block and the second side block are both vertically arranged on the base, and the reinforcement plate is arranged between the first side block and the second side block.
[0015] In one embodiment of the present invention, avoidance grooves are provided at the bottoms of the first side block and the second side block.
[0016] In an embodiment of the present invention, the cushion blocks include four blocks, which are respectively arranged on the four corners of the base.
[0017] In an embodiment of the utility model, two of the cushion blocks are provided with positioning pins, and the sides of the remaining two cushion blocks are provided with limiting blocks.
[0018] The above technical solution of the utility model has the following beneficial effects compared with the prior art:
[0019] The utility model discloses a welding fixture for the tail support of an excavator, which eliminates the need for additional tooling and fixtures during the welding process of the workpiece to be welded, and can be quickly assembled and welded, and does not require measurement, drawing lines, or marking, which saves man-hours, manpower, and financial resources, and ensures the yield rate. When the workpiece to be welded is fixed, the side limit device is used to limit the workpiece to be welded from both sides, and the first rear baffle plate and the second rear baffle plate of the rear baffle device are used to fix and support the back plate of the workpiece to be welded from the middle position, ensuring the center size, avoiding the influence of errors caused by cutting and blanking the back plate, and greatly improving the operation efficiency and yield rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein
[0021] Figure 1 It is a structural schematic diagram of a welding fixture for the tail support of an excavator in a preferred embodiment of the utility model;
[0022] Figure 2 yes Figure 1 The schematic diagram of the excavator tail support welding fixture and the workpiece to be welded after being assembled;
[0023] Explanation of the reference numerals in the drawings in the specification: 1. base; 2. side limit device; 21. first side limit seat; 22. second side limit seat; 221. first side block; 222. second side block; 223. reinforcement plate; 3. rear block device; 31. first rear baffle; 311. fixing bolt; 32. second rear baffle; 4. pad; 5. intermediate support device; 51. first intermediate support plate; 52. second intermediate support plate; 6. positioning pin; 7. block; 100. triangular reinforcement plate; 101. avoidance groove. DETAILED DESCRIPTION
[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.
[0025] Reference Figure 1 As shown, the excavator tail support welding fixture described in the utility model includes: a base 1; a side limit device 2, including a first side limit seat 21 and a second side limit seat 22, which are respectively arranged on both sides of the base 1; a rear baffle device 3, which includes a first rear baffle plate 31 and a second rear baffle plate 32, both of which are vertically arranged on the base 1 for fixedly supporting the workpiece to be welded from the rear side; a pad 4, which is arranged on the base 1 for supporting the workpiece to be welded.
[0026] The excavator tail support welding fixture based on the above structure is processed by a machining center, which can ensure the size and tolerance accuracy of the hole position of the side limit device 2 and the rear stop device 3, reduce the manual line drawing error, and assemble it at one time, and reduce the cumulative tolerance. When welding the excavator tail support, no additional tooling and fixtures are required, and the assembly and welding can be done quickly without measuring, drawing lines, and marking. It saves working hours, manpower, and financial resources, and also ensures the yield rate.
[0027] Furthermore, an intermediate support device 5 is included, which is used to support and limit the workpiece from the inner side of the workpiece to be welded. The intermediate support device 5 includes a first intermediate support plate 51 and a second intermediate support plate 52, which are respectively arranged on the base 1, and the first intermediate support plate 51 is spaced apart from the first side limit seat 21; the second intermediate support plate 52 is spaced apart from the second side limit seat 22.
[0028] Preferably, a triangular reinforcing plate 100 is provided on the first intermediate supporting plate 51. The triangular reinforcing plate 100 can enhance the connection strength between the first intermediate supporting plate 51 and the base 1, and ensure the accuracy of positioning the workpiece to be welded.
[0029] In this embodiment, the tops of the first rear baffle plate 31 and the second rear baffle plate 32 are both provided with fixing bolts 311. The fixing bolts 311 are used to lock and fix the back plate of the workpiece to be welded to the first rear baffle plate 31 and the second rear baffle plate 32 to achieve the positioning of the workpiece to be welded. After the workpiece to be welded is assembled and welded, the fixing bolts 311 are removed; since the back plate of the workpiece to be welded is a thick plate, the thick plate cutting will shrink and deform, and the thick plate cutting has an error of about 0-3mm, so if the edge of the back plate is used as a reference, it is inaccurate. By positioning and locking from the middle position of the back plate with the fixing bolts 311, the error influence during the thick plate cutting can be avoided.
[0030] Furthermore, a triangular reinforcing plate 100 is provided on the first rear baffle 31 and the second rear baffle 32. In this embodiment, the first side stopper 21 and the second side stopper 22 both include a first side stopper 221, a second side stopper 222 and a reinforcing plate 223, the first side stopper 221 and the second side stopper 222 are both vertically arranged on the base 1, and the reinforcing plate 223 is arranged between the first side stopper 221 and the second side stopper 222.
[0031] In this embodiment, the bottoms of the first side block 221 and the second side block 222 are both provided with an avoidance groove 101. The avoidance groove 101 is used to avoid the side edges of the bottom of the workpiece to be welded, so that when the first side block 221 and the second side block 222 limit the two sides of the workpiece, the two sides of the bottom of the workpiece to be welded extend into the avoidance groove 101, so that the first side block 221 and the second side block 222 can be closely attached to the side edges of the workpiece to be welded.
[0032] Furthermore, the pad blocks 4 include four blocks, which are respectively arranged on the four corners of the base 1, two of which are provided with positioning pins 6 for positioning the product to prevent the product from tilting; the sides of the remaining two pad blocks 4 are provided with limit blocks 7 for limiting the sides of the workpiece to be welded.
[0033] During production, the fixture is first 3D modeled according to the standard size, and then the material is disassembled after the machining allowance is given, and the correction is completed after welding. During processing, all surfaces in contact with the product are finely processed, and holes are punched according to the existing processing surface size. The tolerance is uniformly set according to the positive tolerance considering the welding shrinkage problem. At present, this fixture has been used to operate hundreds of products, and the efficiency and yield have been greatly improved.
[0034] During use, first place the bottom plates on both sides of the product on the cushion block 4 and fix them with the positioning pins 6, use the fixing bolts 311 to lock the rear hole plate on the first rear baffle plate 31 and the second rear baffle plate 32, then put in the vertical plates on both sides and make them flush with the first side limit seat 21 and the second side limit seat 22, put the upper bent plate between the vertical plates on both sides and support them on the first middle support plate 51 and the second middle support plate 52, and start spot welding after putting them in place. During spot welding, the vertical plates should be close to the limit block 7. After spot welding, take out the fixing bolts 311 and the positioning pins 6, and move the product as a whole to the other side of the limit block 7 to disengage it, as shown in FIG. Figure 2 It shows a schematic diagram of the assembly of the excavator tail support welding fixture and the workpiece to be welded. After all the workpieces are assembled, the overall welding is carried out. During the product assembly process, if there are problems such as inability to stick flat or uneven placement, large gaps, etc., do not operate, confirm the size of the incoming material, whether the hole processing is abnormal, whether the plate has been leveled, and return it to the previous project for repair or re-cutting in time.
[0035] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.
Claims
1. A welding fixture for the tail support of an excavator, characterized in that: include: Base; The side limiting device comprises a first side limiting seat and a second side limiting seat, which are respectively arranged on both sides of the base. A rear baffle device, comprising a first rear baffle plate and a second rear baffle plate, both of which are vertically arranged on the base and used to fix and support the workpiece to be welded from the rear side; A cushion block is arranged on the base and is used to support the workpiece to be welded.
2. The excavator tail support welding jig according to claim 1, characterized in that: It also includes an intermediate supporting device for supporting and limiting the workpiece from the inner side of the workpiece to be welded.
3. The excavator tail support welding jig according to claim 2, characterized in that: The intermediate support device includes a first intermediate support plate and a second intermediate support plate, which are respectively arranged on the base, and the first intermediate support plate is spaced apart from the first side limit seat; the second intermediate support plate is spaced apart from the second side limit seat.
4. The excavator tail support welding jig according to claim 3, characterized in that: The first middle support plate is provided with a triangular reinforcement plate.
5. The excavator tail support welding jig according to claim 1, characterized in that: The tops of the first rear baffle plate and the second rear baffle plate are both provided with fixing bolts.
6. The excavator tail support welding jig according to claim 5, characterized in that: The first rear baffle and the second rear baffle are provided with triangular reinforcement plates.
7. The excavator tail support welding jig according to claim 1, characterized in that: The first side limit seat and the second side limit seat both include a first side stopper, a second side stopper and a reinforcing plate. The first side stopper and the second side stopper are both vertically arranged on the base, and the reinforcing plate is arranged between the first side stopper and the second side stopper.
8. The excavator tail support welding jig according to claim 7, characterized in that: The bottoms of the first side block and the second side block are both provided with avoidance grooves.
9. The excavator tail support welding jig according to claim 1, characterized in that: The cushion blocks include four blocks, which are respectively arranged on the four corners of the base.
10. The excavator tail support welding jig according to claim 9, characterized in that: Two of the cushion blocks are provided with positioning pins, and the sides of the remaining two cushion blocks are provided with limit blocks.