Tailor-welding device for rear frame of small-sized loader

Abstract

The utility model belongs to the technical field of loader rear frame tailor-welding devices, and particularly relates to a small loader rear frame tailor-welding device which comprises a base. The top of the base is fixedly connected with a cab support positioning seat; a plurality of groups of cab support positioning seats are symmetrically arranged at the top of the base; the top, close to the cab support positioning seat, of the base is fixedly connected with a first support positioning seat; a plurality of groups of first support positioning seats are symmetrically arranged at the top of the base; according to the step, through the arrangement of the base, the cab support positioning seat, the first support positioning seat, the first auxiliary frame positioning seat, the second support positioning seat and the second auxiliary frame positioning seat, the loading machine rear frame is assembled to the top of the base, then the rear frame is welded, a welded rear frame workpiece does not need to be machined, and machining is not needed. And the production efficiency of the rear frame is improved, and the operation steps are simplified.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding devices for the rear frame of loaders, and specifically relates to a welding device for the rear frame of small loaders. Background Technique

[0002] Loaders are heavy construction machinery used in the field of engineering construction, mainly for shoveling loose materials such as soil, sand, and lime, and play an important role in construction projects such as highways, railways, hydropower, and mines.

[0003] The rear frame of a loader is a key load-bearing part of the loader. The rear frame supports components such as the engine, transmission system, and counterweight. When producing the rear frame of a loader, first, according to the design requirements of the rear frame, select suitable materials, and then separately manufacture each component of the rear frame, such as the main beam, secondary beam, connection plate, etc. Then, assemble the manufactured rear frame together and perform welding. After welding, perform surface treatment on the rear frame, and finally conduct quality inspection.

[0004] In the existing production technology of the rear frame of loaders, in order to ensure the accuracy of the rear frame, it is necessary to perform machining on the entire rear frame after welding, and the process steps are cumbersome.

[0005] Therefore, the utility model provides a welding device for the rear frame of small loaders. Content of the Utility Model

[0006] In order to make up for the deficiencies of the existing technology and solve at least one technical problem proposed in the background technique.

[0007] The technical solution adopted by the present utility model to solve its technical problems is as follows: A small loader rear frame welding and assembling device of the present utility model includes a base; a cab support positioning seat is fixedly connected to the top of the base; multiple groups of the cab support positioning seats are arranged on the top of the base and are symmetrically arranged; a first support positioning seat is fixedly connected to the top of the base near the cab support positioning seat; multiple groups of the first support positioning seats are arranged on the top of the base and are symmetrically arranged; a first sub-frame positioning seat is fixedly connected to the top of the base near the first support positioning seat; a second support positioning seat is fixedly connected to the top of the base near the first sub-frame positioning seat; a pair of the second support positioning seats are arranged on the top of the base; a second sub-frame positioning seat is fixedly connected to the top of the base near the second support positioning seat; a web positioning seat is fixedly connected to the top of the base far from the cab support positioning seat; multiple groups of the web positioning seats are arranged on the top of the base and are symmetrically arranged; a drawbar seat positioning seat is fixedly connected to the top of the base far from the base; an articulated positioning seat is fixedly connected to the top of the base near a pair of cab support positioning seats; an articulated upper positioning plate is fixedly connected to the top of the articulated positioning seat; positioning components are respectively arranged on the drawbar seat positioning seat, the first sub-frame positioning seat and the articulated upper positioning plate; a quick-release positioning component is arranged on the top of the cab support positioning seat; through the settings of the base, the cab support positioning seat, the first support positioning seat, the first sub-frame positioning seat, the second support positioning seat and the second sub-frame positioning seat in this step, the rear frame of the loader is assembled on the top of the base, and then the rear frame is welded. The welded rear frame workpiece does not need to be machined, which improves the efficiency during the production of the rear frame and simplifies the operation steps.

[0008] Preferably, the positioning component includes a drawbar positioning pin shaft, a sub-frame positioning pin shaft and an articulated positioning pin shaft; the drawbar positioning pin shaft is fixedly connected to the top of the drawbar seat positioning seat; the sub-frame positioning pin shaft is fixedly connected to the top of the first sub-frame positioning seat; the articulated positioning pin shaft is fixedly connected to the middle of the articulated upper positioning plate far from the articulated positioning seat; through the settings of the drawbar positioning pin shaft, the sub-frame positioning pin shaft and the articulated positioning pin shaft in this step, when the rear frame is assembled on the top of the base, the components are positioned, which improves the accuracy during the splicing of the rear frame, improves the quality of the rear frame production, and reduces the steps of machining required after welding.

[0009] Preferably, the quick-release positioning component includes a quick-release positioning plate and a cab support positioning pin shaft; the quick-release positioning plate slides on the top of the cab support positioning seat; the cab support positioning pin shaft is fixedly connected to the middle of the quick-release positioning plate far from the cab support positioning seat; through the settings of the quick-release positioning plate and the cab support positioning pin shaft in this step, the rear frame workpiece is positioned, and it is convenient to lift out the rear frame workpiece after welding through the quick-release positioning plate, which improves the convenience during use.

[0010] Preferably, a waste residue collection box is fixedly connected to the bottom of the base; a pair of waste residue collection boxes are arranged on the top of the base and are symmetrically arranged; a sliding side plate is slidably connected to the side wall of the waste residue collection box away from the base; a guiding block is fixedly connected to the inner side wall of the waste residue collection box close to the sliding side plate; a slag discharge port is formed at the bottom of the waste residue collection box; a draw plate is slidably connected to the bottom of the waste residue collection box close to the slag discharge port. Through the arrangement of the waste residue collection box, the sliding side plate, the guiding block and the draw plate in this step, the welding slag on the top of the base is swept into the waste residue collection box for collection, improving the convenience of collecting the welding slag and foreign matters, and reducing the situation that the welding slag or foreign matters fall into other equipment and cause damage.

[0011] Preferably, legs are detachably installed at the bottom of the base; multiple groups of legs are arranged at the bottom of the base and are evenly distributed at the four corners of the bottom of the base; universal wheels are fixedly connected to the bottom ends of the legs. Through the arrangement of the legs and the universal wheels in this step, the convenience of moving the device is improved.

[0012] Preferably, a backing plate is fixedly connected to the side wall of a group of web positioning seats close to the second sub-frame positioning seat. Through the arrangement of the backing plate in this step, the contact area between the workpiece and the web positioning seat is increased, improving the stability of the workpiece when being assembled on the top of the base.

[0013] Preferably, a web width limiting pull plate is arranged on the top of the base. Through the arrangement of the web width limiting pull plate in this step, the width of the workpiece is limited, improving the accuracy of the workpiece when being assembled on the top of the base.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. For the small loader rear frame welding and assembling device of the present utility model, through the arrangement of the base, the cab support positioning seat, the first support positioning seat, the first sub-frame positioning seat, the second support positioning seat and the second sub-frame positioning seat, the rear frame of the loader is assembled on the top of the base, and then the rear frame is welded. The welded rear frame workpiece does not need to be machined, improving the efficiency of rear frame production and simplifying the operation steps.

[0016] 2. For the small loader rear frame welding and assembling device of the present utility model, through the arrangement of the drawbar positioning pin shaft, the sub-frame positioning pin shaft and the hinge positioning pin shaft, when the rear frame is assembled on the top of the base, the parts are positioned, improving the accuracy of rear frame splicing, improving the quality of rear frame production, and reducing the machining steps required after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further illustrates the present utility model with reference to the drawings.

[0018] Figure 1 is a perspective view of the present utility model;

[0019] Figure 2 It is a schematic structural view of the articulated positioning pin shaft and the articulated positioning seat in the present utility model;

[0020] Figure 3 It is a schematic structural view of the guide block and the waste residue collection box in the present utility model;

[0021] Figure 4 It is a front view of the base in the present utility model;

[0022] Figure 5 It is a side view of the base in the present utility model;

[0023] Figure 6 It is a top view of the base in the present utility model;

[0024] In the figure: 1. Base; 11. Cab support positioning seat; 12. First support positioning seat; 13. First subframe positioning seat; 14. Second support positioning seat; 15. Second subframe positioning seat; 16. Web positioning seat; 17. Drawbar pin seat positioning seat; 18. Articulated positioning seat; 19. Articulated upper positioning plate; 2. Drawbar pin positioning pin shaft; 21. Subframe positioning pin shaft; 22. Articulated positioning pin shaft; 3. Quick-release positioning plate; 31. Cab support positioning pin shaft; 4. Waste residue collection box; 41. Sliding side plate; 42. Guide block; 43. Drawer plate; 5. Leg; 51. Universal wheel; 6. Cushion plate; 7. Web width limiting pull plate. Detailed implementation manners

[0025] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with the specific implementation manners.

[0026] Such as Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6As shown in the figure, a butt welding device for the rear frame of a small loader according to an embodiment of the present utility model includes a base 1; a cab support positioning seat 11 is fixedly connected to the top of the base 1; multiple groups of cab support positioning seats 11 are arranged on the top of the base 1 and are symmetrically arranged; a first support positioning seat 12 is fixedly connected to the top of the base 1 near the cab support positioning seat 11; multiple groups of first support positioning seats 12 are arranged on the top of the base 1 and are symmetrically arranged; a first sub-frame positioning seat 13 is fixedly connected to the top of the base 1 near the first support positioning seat 12; a second support positioning seat 14 is fixedly connected to the top of the base 1 near the first sub-frame positioning seat 13; a pair of second support positioning seats 14 are arranged on the top of the base 1; a second sub-frame positioning seat 15 is fixedly connected to the top of the base 1 near the second support positioning seat 14; a web positioning seat 16 is fixedly connected to the top of the base 1 away from the cab support positioning seat 11; multiple groups of web positioning seats 16 are arranged on the top of the base 1 and are symmetrically arranged; a drawbar seat positioning seat 17 is fixedly connected to the top of the base 1 away from the base 1; an articulated positioning seat 18 is fixedly connected to the top of the base 1 near a pair of cab support positioning seats 11; an articulated upper positioning plate 19 is fixedly connected to the top of the articulated positioning seat 18; positioning components are respectively provided on the drawbar seat positioning seat 17, the first sub-frame positioning seat 13 and the articulated upper positioning plate 19; a quick-release positioning component is provided on the top of the cab support positioning seat 11; during work, the rear frame workpiece to be welded is installed on the cab support positioning seat 11, the first support positioning seat 12, the first sub-frame positioning seat 13, the second support positioning seat 14, the second sub-frame positioning seat 15, the web positioning seat 16, the drawbar seat positioning seat 17 and the web positioning seat 16 for assembly and welding, and the rear frame workpiece is positioned and installed through the positioning components and the quick-release positioning component; through the settings of the base 1, the cab support positioning seat 11, the first support positioning seat 12, the first sub-frame positioning seat 13, the second support positioning seat 14 and the second sub-frame positioning seat 15 in this step, the rear frame of the loader is assembled on the top of the base 1, and then the rear frame is welded. The welded rear frame workpiece does not need to be machined, which improves the efficiency during the production of the rear frame and simplifies the operation steps.

[0027] As Figure 2As shown, the positioning assembly includes a drawbar positioning pin shaft 2, a subframe positioning pin shaft 21, and a hinge positioning pin shaft 22; the drawbar positioning pin shaft 2 is fixedly connected to the top of the drawbar seat positioning base 17; the subframe positioning pin shaft 21 is fixedly connected to the top of the first subframe positioning base 13; the hinge positioning pin shaft 22 is fixedly connected to the middle of the hinge upper positioning plate 19 away from the hinge positioning base 18; during operation, when the rear frame is assembled on the top of the base 1, positioning and assembling the rear frame through the drawbar positioning pin shaft 2, the subframe positioning pin shaft 21, and the hinge positioning pin shaft 22 can ensure the accuracy between the hole positions on the workpiece and improve the accuracy during the production of the rear frame; in this step, through the settings of the drawbar positioning pin shaft 2, the subframe positioning pin shaft 21, and the hinge positioning pin shaft 22, when the rear frame is assembled on the top of the base 1, the components are positioned, the accuracy of the rear frame splicing is improved, the quality of the rear frame production is improved, and the machining steps required after welding are reduced.

[0028] As Figure 2 , Figure 4 , Figure 5 and Figure 6 shown, the quick-release positioning assembly includes a quick-release positioning plate 3 and a cab support positioning pin shaft 31; the quick-release positioning plate 3 slides on the top of the cab support positioning base 11; the cab support positioning pin shaft 31 is fixedly connected to the middle of the quick-release positioning plate 3 away from the cab support positioning base 11; during operation, when the rear frame is installed on the top of the base 1, it is positioned through the quick-release positioning plate 3 and the cab support positioning pin shaft 31. After the welding step is completed, the quick-release positioning plate 3 withdraws outward to facilitate the lifting out of the rear frame workpiece; in this step, through the settings of the quick-release positioning plate 3 and the cab support positioning pin shaft 31, the rear frame workpiece is positioned, and through the quick-release positioning plate 3, it is convenient to lift out the rear frame workpiece after welding, improving the convenience during use.

[0029] As Figure 1 and Figure 3As shown, a waste residue collection box 4 is fixedly connected to the bottom of the base 1; a pair of waste residue collection boxes 4 are provided on the top of the base 1 and are symmetrically arranged; a sliding side plate 41 is slidably connected to the side wall of the waste residue collection box 4 away from the base 1; a guiding block 42 is fixedly connected to the inner side wall of the waste residue collection box 4 close to the sliding side plate 41; a slag discharge port is opened at the bottom of the waste residue collection box 4; a draw plate 43 is slidably connected to the bottom of the waste residue collection box 4 close to the slag discharge port; during work, after welding is completed, the welding slag falls on the top of the base 1. When cleaning is required, the sliding side plate 41 is pulled to make the top of the sliding side plate 41 higher than the top of the base 1, and a cleaning tool is used to clean the top of the base 1. The welding slag or foreign objects on the top of the base 1 are swept towards the sliding side plate 41 and are blocked by the sliding side plate 41 and fall into the waste residue collection box 4. The guiding block 42 plays a guiding role. When the welding slag inside the waste residue collection box 4 needs to be discharged, the draw plate 43 is slid to discharge the welding slag; through the settings of the waste residue collection box 4, the sliding side plate 41, the guiding block 42, and the draw plate 43 in this step, the welding slag on the top of the base 1 is swept into the waste residue collection box 4 for collection, improving the convenience of collecting the welding slag and foreign objects and reducing the situation that the welding slag or foreign objects fall into other equipment and cause damage.

[0030] As Figure 1 shown, legs 5 are detachably installed at the bottom of the base 1; multiple groups of legs 5 are provided at the bottom of the base 1 and are evenly distributed at the four corners of the bottom of the base 1; universal wheels 51 are fixedly connected to the bottom ends of the legs 5; during work, when the device needs to be moved, the legs 5 are installed at the bottom of the base 1, and the base 1 is moved through the universal wheels 51; through the settings of the legs 5 and the universal wheels 51 in this step, the convenience of moving the device is improved.

[0031] As Figure 2 and Figure 4 shown, a backing plate 6 is fixedly connected to the side wall of a group of web positioning seats 16 close to the second sub-frame positioning seat 15; during work, when the rear frame workpiece is assembled on the top of the base 1, the backing plate 6 increases the contact area between the workpiece and the web positioning seat 16; through the setting of the backing plate 6 in this step, the contact area between the workpiece and the web positioning seat 16 is increased, improving the stability of the workpiece when assembled on the top of the base 1.

[0032] As Figure 1 and Figure 6 shown, a web width limiting pull plate 7 is provided on the top of the base 1; during work, when the workpiece is assembled on the top of the base 1, the web width limiting pull plate 7 is fixed to the workpiece to limit the width of the workpiece; through the setting of the web width limiting pull plate 7 in this step, the width of the workpiece is limited, improving the accuracy of the workpiece when assembled on the top of the base 1.

[0033] During operation, the rear frame workpiece to be welded is installed on the cab support positioning seat 11, the first support positioning seat 12, the first sub-frame positioning seat 13, the second support positioning seat 14, the second sub-frame positioning seat 15, the web positioning seat 16, the drawbar seat positioning seat 17 and the web positioning seat 16 for assembly welding, and the rear frame workpiece is positioned and installed through the positioning component and the quick-release positioning component; when the rear frame is assembled on the top of the base 1, the drawbar positioning pin shaft 2, the sub-frame positioning pin shaft 21 and the hinge positioning pin shaft 22 are used to position and assemble the rear frame, which can ensure the accuracy between the hole positions on the workpiece and improve the accuracy during the production of the rear frame; the quick-release positioning plate 3 and the cab support positioning pin shaft 31 are used for positioning. After the welding step is completed, the quick-release positioning plate 3 withdraws outward, which is convenient for lifting out the rear frame workpiece; after welding, the welding slag falls on the top of the base 1. When cleaning is required, the sliding side plate 41 is pulled to make the top of the sliding side plate 41 higher than the top of the base 1, and a cleaning tool is used to clean the top of the base 1. The welding slag or foreign objects on the top of the base 1 are swept towards the sliding side plate 41 and are blocked by the sliding side plate 41 and fall into the waste slag collection box 4. The guiding block 42 plays a guiding role. When the welding slag inside the waste slag collection box 4 needs to be discharged, the sliding draw plate 43 is used to discharge the welding slag; when the device needs to be moved, the legs 5 are installed at the bottom of the base 1, and the base 1 is moved through the universal wheels 51; when the rear frame workpiece is assembled on the top of the base 1, the cushion plate 6 increases the contact area between the workpiece and the web positioning seat 16; when the workpiece is assembled on the top of the base 1, the web width limiting pull plate 7 is fixed on the workpiece to limit the width of the workpiece.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding and assembling device for the rear frame of a small loader, comprising a base (1); characterized in that: A cab support positioning seat (11) is fixedly connected to the top of the base (1); multiple groups of the cab support positioning seats (11) are arranged on the top of the base (1) and are symmetrically arranged; a first support positioning seat (12) is fixedly connected to the top of the base (1) near the cab support positioning seat (11); multiple groups of the first support positioning seats (12) are arranged on the top of the base (1) and are symmetrically arranged; a first sub-frame positioning seat (13) is fixedly connected to the top of the base (1) near the first support positioning seat (12); a second support positioning seat (14) is fixedly connected to the top of the base (1) near the first sub-frame positioning seat (13); a pair of the second support positioning seats (14) are arranged on the top of the base (1); a second sub-frame positioning seat (15) is fixedly connected to the top of the base (1) near the second support positioning seat (14); a web positioning seat (16) is fixedly connected to the top of the base (1) away from the cab support positioning seat (11); multiple groups of the web positioning seats (16) are arranged on the top of the base (1) and are symmetrically arranged; a drawbar pin seat positioning seat (17) is fixedly connected to the top of the base (1) away from the base (1); an articulated positioning seat (18) is fixedly connected to the top of the base (1) near a pair of cab support positioning seats (11); an articulated upper positioning plate (19) is fixedly connected to the top of the articulated positioning seat (18); positioning components are respectively arranged on the drawbar pin seat positioning seat (17), the first sub-frame positioning seat (13) and the articulated upper positioning plate (19); a quick-release positioning component is arranged on the top of the cab support positioning seat (11).

2. The small loader rear frame welding and assembling device according to claim 1, characterized in that: The positioning component includes a drawbar pin positioning pin shaft (2), a sub-frame positioning pin shaft (21) and an articulated positioning pin shaft (22); the drawbar pin positioning pin shaft (2) is fixedly connected to the top of the drawbar pin seat positioning seat (17); the sub-frame positioning pin shaft (21) is fixedly connected to the top of the first sub-frame positioning seat (13); the articulated positioning pin shaft (22) is fixedly connected to the middle of the articulated upper positioning plate (19) away from the articulated positioning seat (18).

3. A small loader rear frame welding device according to claim 1, characterized in that: The quick-release positioning component includes a quick-release positioning plate (3) and a cab support positioning pin shaft (31); the quick-release positioning plate (3) slides on the top of the cab support positioning seat (11); the cab support positioning pin shaft (31) is fixedly connected to the middle of the quick-release positioning plate (3) away from the cab support positioning seat (11).

4. A small loader rear frame welding and assembling device according to claim 1, characterized in that: A waste residue collection box (4) is fixedly connected to the bottom of the base (1); a pair of the waste residue collection boxes (4) are arranged on the top of the base (1) and are symmetrically arranged; a sliding side plate (41) is slidably connected to the side wall of the waste residue collection box (4) away from the base (1); a guide block (42) is fixedly connected to the inner side wall of the waste residue collection box (4) near the sliding side plate (41); a slag discharge port is formed in the bottom of the waste residue collection box (4); a draw plate (43) is slidably connected to the bottom of the waste residue collection box (4) near the slag discharge port.

5. The butt welding device for the rear frame of a small loader according to claim 1, characterized in that: The bottom of the base (1) is detachably installed with legs (5); multiple groups of legs (5) are arranged at the bottom of the base (1), and are evenly distributed at the four corners of the bottom of the base (1); the bottom end of the legs (5) is fixedly connected with universal wheels (51).

6. The small loader rear frame welding and assembly device according to claim 1, characterized in that: A cushion plate (6) is fixedly connected to the side wall of a group of the web positioning seats (16) close to the second sub-frame positioning seat (15).

7. A small loader rear frame welding device according to claim 1, characterized in that: A web width limiting pull plate (7) is arranged at the top of the base (1).

Images