Novel excavator main platform automatic clamping device

Abstract

The utility model relates to the technical field of excavator main platform welding, and discloses a novel excavator main platform automatic clamping device which comprises a head positioning mechanism, a tail positioning mechanism and an excavator main machine frame located between the head positioning mechanism and the tail positioning mechanism, and the head positioning mechanism comprises a head outer frame. The novel excavator main platform automatic clamping device is provided with the head positioning mechanism, the tail positioning mechanism and the excavator main rack, the head of the excavator main rack is clamped and fixed through the head positioning mechanism, and the head of the excavator main rack is clamped and fixed through the tail positioning mechanism; the automatic welding system is matched with the RGV automatic feeding system and the robot automatic welding system to complete the automatic welding function of the excavator main platform, so that assembly line automatic welding of the excavator main platform becomes possible, it is guaranteed that products have high welding quality and uniformity, the overall design is reasonable, use is convenient, and the automation degree is high.

Description

Technical Field

[0001] This utility model relates to the field of excavator main platform welding technology, specifically a novel automatic clamping device for excavator main platforms. Background Technology

[0002] The main platform of an excavator is a key part of the excavator. Like the "body" of the excavator, it plays many important functions. Structurally, the main platform is a robust metal structure, generally welded from high-strength steel, which can withstand various complex stresses during the operation of the excavator. It is mainly used to install key components such as the engine, hydraulic system, and cab. The engine is placed on the main platform to provide power to the excavator, and its power is transmitted to various working devices through a complex transmission and hydraulic system.

[0003] However, the existing welding method for excavator main platforms mainly involves the operator manually using a crane or KBK to lift the workpiece to the welding platform, then manually clamping the workpiece, and then manually welding the weld. This method has a low degree of automation, resulting in high labor intensity, low work efficiency, and poor welding quality, which greatly increases labor costs. Furthermore, it cannot be automated on an assembly line and cannot improve production efficiency. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a new type of automatic clamping device for excavator main platforms. It can effectively solve the problem of the existing welding method for excavator main platforms in the prior art, which mainly involves the operator manually using a crane or KBK to lift the workpiece to the welding platform, then manually clamping the workpiece, and then manually welding the weld. This method has a low degree of automation, resulting in high labor intensity, low work efficiency, and poor welding quality, which greatly increases labor costs. In addition, it cannot be automated in a production line and cannot improve production efficiency.

[0005] The technical solution adopted by this utility model is: a novel automatic clamping device for excavator main platforms, including a head positioning mechanism and a tail positioning mechanism, and an excavator main frame located between the head positioning mechanism and the tail positioning mechanism. The head positioning mechanism includes a head outer frame, a head positioning cover fixedly installed on the lower part of the head outer frame, a head material presence / absence detection component, a second positioning pin, and a first positioning pin fixedly installed on the upper side of the head outer frame, a head inner frame provided on the lower side of the head inner frame, a first linear guide provided on the lower side of the head inner frame, a movable frame slidably installed on the lower part of the first linear guide, and a movable hydraulic lifting clamping component provided on the upper side of the movable frame. The tail positioning mechanism includes a tail section... The structure comprises an outer frame and a rear inner movable plate. A side stop pin is fixedly installed at the top of the rear outer frame. A tail material absence detection component is fixedly installed on the upper side of the rear outer frame. A flip plate is rotatably installed on the upper side of the rear outer frame. A side push component is fixedly installed on the side of the rear outer frame near the head positioning mechanism. A second cylinder is fixedly installed on the lower side of the rear outer frame. A connecting seat is fixedly installed at the movable end of the second cylinder. A tail connecting plate is fixedly installed at the end of the connecting seat away from the second cylinder. A second linear rail is fixedly installed on the lower side of the rear outer frame. The second linear rail is slidably connected to the rear inner movable plate. A tail pressing component is provided on the upper side of the rear inner movable plate. A limit block is fixedly installed on the outer side of the tail pressing component.

[0006] Preferably, a tail junction box and a solenoid valve cover are fixedly installed on the outer side of the tail outer frame, and a head junction box is fixedly installed on the outer side of the head positioning cover.

[0007] Preferably, the movable hydraulic lifting and clamping assembly includes a cylinder. The cylinder is fixedly installed on the lower part of the head outer frame. A floating joint is fixedly installed on the movable end of the cylinder. The floating joint is fixedly connected to the movable frame. A clamping cylinder and a chuck are fixedly installed on the upper side of the movable frame. A cylinder push block is fixedly installed on the movable end of the clamping cylinder. A clamping block is fixedly installed on the lower side of the chuck.

[0008] Preferably, the clamping cylinder and the cylinder pusher are located directly below the chuck. The clamping cylinder, chuck, cylinder pusher and clamping block are provided in two identical sets, and the two sets of clamping cylinder, chuck, cylinder pusher and clamping block are symmetrically distributed on both sides of cylinder one.

[0009] With the above technical solution, when the head-mounted material detection component detects the excavator main frame, cylinder one transmits power to the movable frame through a floating joint. When the clamping cylinder and clamping block move to the designated position, the clamping cylinder pushes the cylinder pusher block upward. Through the cooperation of the cylinder pusher block and the chuck, the excavator main frame is clamped. The second positioning pin and the first positioning pin on the head outer frame can position the excavator main frame. At the same time, the second positioning pin and the first positioning pin can be quickly disassembled and installed, and the installation position can be changed. It can be compatible with different products and has high practicality.

[0010] Preferably, the tail pressing assembly includes a pressing cylinder. The pressing cylinder is fixedly installed on the lower part of the inner movable plate of the tail. A connecting block is fixedly installed on the movable end of the pressing cylinder. An ear seat is fixedly installed on the upper side of the inner movable plate of the tail. A slider is fixedly installed on the inner side of the ear seat. A third linear guide is slidably installed on the outer side of the slider. A connecting rod is fixedly installed on the side of the third linear guide away from the slider. A pressing block is fixedly installed on the top of the connecting rod. A pressing floating block is fixedly installed on the lower side of the pressing block.

[0011] Preferably, the connecting block and the connecting rod are fixedly connected, and the ear seat, slider and the third linear rail are provided in two identical sets, with the two sets of ear seats, sliders and the third linear rail symmetrically distributed on both sides of the connecting rod.

[0012] With the above technical solution, when the excavator main frame is detected by the no-material detection component at the tail, and the head positioning mechanism has completed clamping, the side push component will push the workpiece onto the side stop pin through the side push cylinder to achieve the alignment and clamping action. After the side push alignment and clamping, the second cylinder transmits power to the tail connecting plate through the connecting seat. The tail connecting plate drives the tail inner movable plate to move horizontally. The tail inner movable plate drives the tail pressing component to move horizontally. After the tail pressing component moves to the appropriate position, the pressing cylinder transmits power to the connecting rod through the connecting block. The connecting rod can drive the pressing block to move downward, thereby realizing the clamping of the excavator main frame at the tail. Through the design of the rotating flip plate and the pressing floating block, it can be compatible with different products, always with surface contact, better force distribution and increased stability.

[0013] Preferably, the head and tail material absence detection components have the same structure. Both the head and tail material absence detection components include a bracket. A proximity switch is fixedly installed on the inner side of the bracket. A detection component housing is fixedly installed on the top of the bracket by bolts. An end cap is fixedly installed on the top of the detection component housing by bolts. A guide sleeve is fixedly installed inside the detection component housing. A push rod and a spring are provided inside the guide sleeve. The push rod is located inside the spring.

[0014] Preferably, the push rod is located directly above the proximity switch, the push rod is slidably connected to the guide sleeve, and the cross-section of the push rod is a cross shape.

[0015] With the above technical solution, when in use, after the excavator main frame is placed on the head positioning mechanism, the excavator main frame presses down on the push rod. When the push rod contacts the proximity switch, it can be determined whether there is an excavator main frame on the head positioning mechanism and the tail positioning mechanism.

[0016] Compared with the prior art, this utility model provides a novel automatic clamping device for excavator main platforms, which has the following advantages: The novel automatic clamping device for excavator main platforms is equipped with a head positioning mechanism, a tail positioning mechanism, and an excavator main frame. The head positioning mechanism clamps and fixes the head of the excavator main frame, and the tail positioning mechanism clamps and fixes the head of the excavator main frame. In conjunction with the RGV automatic feeding system and the robot automatic welding system, the automatic welding function of the excavator main platform is completed, making it possible to realize the automated welding of the excavator main platform on the production line. This ensures that the product has high welding quality and uniformity. The overall design is reasonable, easy to use, and has a high degree of automation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a three-dimensional structural diagram of the head positioning mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the head positioning mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the second positioning pin installation structure of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the movable hydraulic lifting and clamping assembly of this utility model;

[0023] Figure 7 This is a schematic diagram of the three-dimensional structure of the tail-end pressing component of this utility model. Figure 1 ;

[0024] Figure 8 This is a schematic diagram of the three-dimensional structure of the tail-end pressing component of this utility model. Figure 2 ;

[0025] Figure 9 This is a schematic diagram of the flap installation structure of this utility model;

[0026] Figure 10 This is a schematic diagram of the internal structure of the tail positioning mechanism of this utility model;

[0027] Figure 11 This is a schematic diagram of the installation structure of the side-push assembly of this utility model;

[0028] Figure 12 This is a schematic diagram of the push rod installation structure of this utility model.

[0029] The components include: 1. Head positioning mechanism; 2. Tail positioning mechanism; 3. Excavator main frame; 4. Head outer frame; 5. Head junction box; 6. Head material presence / absence detection component; 7. Second positioning pin; 8. First positioning pin; 9. Head positioning cover; 10. Head inner frame; 11. First linear guide; 12. Movable frame; 13. Movable hydraulic lifting and clamping component; 1301. Cylinder 1; 1302. Floating joint; 1303. Clamping cylinder; 1304. Cylinder push block; 1305. Chuck; 1306. Clamping block; 14. Tail outer frame; 15. Side stop pin; 16. Tail junction box; 17. Tail material presence / absence detection component; 8. Side push assembly; 19. Flip plate; 20. Rear inner movable plate; 21. Rear junction box; 22. Cylinder II; 23. Connecting seat; 24. Rear connecting plate; 25. Second linear guide; 26. Rear pressing assembly; 2601. Pressing cylinder; 2602. Connecting block; 2603. Connecting rod; 2604. Pressing block; 2605. Pressing floating block; 2606. Ear seat; 2607. Slider; 2608. Third linear guide; 27. Limit block; 2801. Bracket; 2802. Proximity switch; 2803. Detection assembly housing; 2804. Guide sleeve; 2805. Spring; 2806. Push rod; 2807. End cover. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1: As Figure 1-12As shown, this utility model provides a novel automatic clamping device for an excavator main platform, including a head positioning mechanism 1 and a tail positioning mechanism 2, and an excavator main frame 3 located between the head positioning mechanism 1 and the tail positioning mechanism 2. The head positioning mechanism 1 includes a head outer frame 4, a head positioning cover 9 fixedly installed on the lower part of the head outer frame 4, a head material presence / absence detection component 6, a second positioning pin 7, and a first positioning pin 8 fixedly installed on the upper side of the head outer frame 4, a head inner frame 10 provided on the lower side of the head outer frame 4, a first linear guide 11 provided on the lower side of the head inner frame 10, a movable frame 12 slidably installed on the lower part of the first linear guide 11, and a movable hydraulic lifting clamping component 13 provided on the upper side of the movable frame 12. The tail positioning mechanism 2 includes a tail outer frame 14 and a tail inner movable frame 15. The moving plate 20 and the top of the tail outer frame 14 are fixedly installed with a side stop pin 15. The upper side of the tail outer frame 14 is fixedly installed with a tail material absence detection component 17. The upper side of the tail outer frame 14 is rotatably installed with a flip plate 19. The side push component 18 is fixedly installed on the side of the tail outer frame 14 near the head positioning mechanism 1. The lower side of the tail outer frame 14 is fixedly installed with a cylinder 22. The movable end of the cylinder 22 is fixedly installed with a connecting seat 23. The end of the connecting seat 23 away from the cylinder 22 is fixedly installed with a tail connecting plate 24. The lower side of the tail outer frame 14 is fixedly installed with a second linear rail 25. The second linear rail 25 is slidably connected to the tail inner moving plate 20. The upper side of the tail inner moving plate 20 is provided with a tail pressing component 26. The outer side of the tail pressing component 26 is fixedly installed with a limit block 27.

[0032] Specifically, a tail junction box 16 and a solenoid valve cover 21 are fixedly installed on the outer side of the tail outer frame 14, and a head junction box 5 is fixedly installed on the outer side of the head positioning cover 9.

[0033] Specifically, the movable hydraulic lifting and clamping assembly 13 includes a cylinder 1301. The cylinder 1301 is fixedly installed on the lower part of the head outer frame 4. A floating joint 1302 is fixedly installed on the movable end of the cylinder 1301. The floating joint 1302 is fixedly connected to the movable frame 12. A clamping cylinder 1303 and a chuck 1305 are fixedly installed on the upper side of the movable frame 12. A cylinder pusher 1304 is fixedly installed on the movable end of the clamping cylinder 1303. A clamping block 1306 is fixedly installed on the lower side of the chuck 1305. The clamping cylinder 1303 and cylinder pusher 1304 are located directly below the chuck 1305. Two identical sets of clamping cylinders 1303, chucks 1305, cylinder pushers 1304, and clamping blocks 1306 are provided. 05. The cylinder push block 1304 and clamping block 1306 are symmetrically distributed on both sides of cylinder 1301. The advantage is that when the head has a material-free detection component 6 that detects the excavator main frame 3, cylinder 1301 transmits power to the movable frame 12 through the floating joint 1302. When the clamping cylinder 1303 and clamping block 1306 move to the designated position, the clamping cylinder 1303 pushes the cylinder push block 1304 upward. Through the cooperation of the cylinder push block 1304 and the chuck 1305, the excavator main frame 3 is clamped. The second positioning pin 7 and the first positioning pin 8 on the head outer frame 4 can position the excavator main frame 3. At the same time, the second positioning pin 7 and the first positioning pin 8 can be quickly disassembled and installed, and the installation position can be changed. It can be compatible with different products and has high practicality.

[0034] Specifically, the tail-end pressing assembly 26 includes a pressing cylinder 2601. The pressing cylinder 2601 is fixedly installed on the lower part of the inner movable plate 20 of the tail end. A connecting block 2602 is fixedly installed on the movable end of the pressing cylinder 2601. An ear seat 2606 is fixedly installed on the upper side of the inner movable plate 20 of the tail end. A slider 2607 is fixedly installed on the inner side of the ear seat 2606. A third linear guide 2608 is slidably installed on the outer side of the slider 2607. The third linear guide 2608 is located away from the slider 260. A connecting rod 2603 is fixedly installed on one side of the 7. A pressing block 2604 is fixedly installed on the top of the connecting rod 2603. A pressing floating block 2605 is fixedly installed on the lower side of the pressing block 2604. The connecting block 2602 is fixedly connected to the connecting rod 2603. Two identical sets of ear seats 2606, sliders 2607 and third linear guides 2608 are provided. The two sets of ear seats 2606, sliders 2607 and third linear guides 2608 are symmetrically distributed on both sides of the connecting rod 2603. The advantage is that when the excavator main frame 3 is detected by the material-free detection component 17 at the tail and the head positioning mechanism 1 has completed clamping, the side push component 18 will push the workpiece onto the side stop pin 15 through the side push cylinder to achieve the alignment and clamping action. After the side push alignment and clamping, the cylinder 22 transmits power to the tail connecting plate 24 through the connecting seat 23. The tail connecting plate 24 drives the tail inner movable plate 20 to move horizontally. The tail inner movable plate 20 drives the tail pressing component 26 to move horizontally. After the tail pressing component 26 moves to the appropriate position, the pressing cylinder 2601 transmits power to the connecting rod 2603 through the connecting block 2602. The connecting rod 2603 can drive the pressing blocks 2604 and 2605 to move downward, thereby realizing the clamping of the excavator main frame 3 at the tail. Through the design of the rotating flip plate 19 and the pressing floating block, it can be compatible with different products, always with surface contact, better force distribution and increased stability.

[0035] Example 2: Figure 2-12 As shown, this is an improvement on the previous embodiment.

[0036] Specifically, the head-end and tail-end empty material detection components 6 and 17 have the same structure. Both include a bracket 2801. A proximity switch 2802 is fixedly installed inside the bracket 2801. A detection component housing 2803 is fixedly installed on the top of the bracket 2801 by bolts. An end cap 2807 is fixedly installed on the top of the detection component housing 2803 by bolts. A guide sleeve 2804 is fixedly installed inside the detection component housing 2803. A push rod 28 is provided inside the guide sleeve 2804. 06 and spring 2805, push rod 2806 is located inside spring 2805, push rod 2806 is located directly above proximity switch 2802, push rod 2806 is slidably connected to guide sleeve 2804, push rod 2806 has a cross-shaped structure. The advantage is that when in use, after the excavator main frame 3 is placed on the head positioning mechanism 1, the excavator main frame 3 presses down on push rod 2806. When push rod 2806 and proximity switch 2802 come into contact with each other, it can be realized that there is excavator main frame 3 on head positioning mechanism 1 and tail positioning mechanism 2.

[0037] Working principle: The operator uses the RGV automatic feeding system to place the excavator main frame 3 between the head positioning mechanism 1 and the tail positioning mechanism 2. When the head material detection component 6 detects the excavator main frame 3, cylinder 1301 transmits power to the movable frame 12 through the floating joint 1302. When the clamping cylinder 1303 and the clamping block 1306 move to the designated position, the clamping cylinder 1303 pushes the cylinder pusher 1304 upward. Through the cooperation of the cylinder pusher 1304 and the chuck 1305, the excavator main frame 3 is clamped. The second positioning pin 7 and the first positioning pin 8 on the head outer frame 4 can position the excavator main frame 3. After the excavator main frame 3 on the head positioning mechanism 1 is fixed, the side push component 18 will push the workpiece onto the side stop pin 15 through the side push cylinder to achieve the alignment and clamping action. After the side push alignment and clamping, cylinder 2... 2. Power is transmitted to the tail connecting plate 24 via the connecting seat 23. The tail connecting plate 24 drives the tail inner movable plate 20 to move horizontally. The tail inner movable plate 20 drives the tail pressing component 26 to move horizontally. After the tail pressing component 26 moves to the appropriate position, the pressing cylinder 2601 transmits power to the connecting rod 2603 via the connecting block 2602. The connecting rod 2603 can drive the pressing blocks 2604 and 2605 to move downward, thereby realizing the clamping of the tail of the excavator main frame 3. Through the design of the rotating flip plate 19 and the pressing floating block, it can be compatible with different products, always with surface-to-surface contact, better force distribution and increased stability. The overall design is reasonable and can be used with the RGV automatic feeding system and the robot automatic welding system to complete the automatic welding function of the excavator main platform, making it possible to realize the automatic welding of the excavator main platform on the production line, ensuring that the product has high welding quality and uniformity.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel automatic clamping device for excavator main platform, comprising a head positioning mechanism (1) and a tail positioning mechanism (2), and an excavator main frame (3) located between the head positioning mechanism (1) and the tail positioning mechanism (2), characterized in that: The head positioning mechanism (1) includes a head outer frame (4), a head positioning cover (9) is fixedly installed on the lower part of the head outer frame (4), a head material presence / absence detection component (6), a second positioning pin (7) and a first positioning pin (8) are fixedly installed on the upper side of the head outer frame (4), a head inner frame (10) is provided on the lower side of the head outer frame (4), a first linear guide (11) is provided on the lower side of the head inner frame (10), a movable frame (12) is slidably installed on the lower part of the first linear guide (11), and a movable hydraulic lifting clamping component (13) is provided on the upper side of the movable frame (12). The tail positioning mechanism (2) includes a tail outer frame (14) and a tail inner movable plate (20), a side stop pin (15) is fixedly installed on the top of the tail outer frame (14), and the upper side of the tail outer frame (14) is fixedly installed on the upper side of the head inner frame (14). A tail-end material-free detection component (17) is fixedly installed. A flap (19) is rotatably installed on the upper side of the tail-end outer frame (14). A side-push component (18) is fixedly installed on the side of the tail-end outer frame (14) near the head positioning mechanism (1). A cylinder two (22) is fixedly installed on the lower side of the tail-end outer frame (14). A connecting seat (23) is fixedly installed on the movable end of the cylinder two (22). A tail-end connecting plate (24) is fixedly installed on the end of the connecting seat (23) away from the cylinder two (22). A second linear guide (25) is fixedly installed on the lower side of the tail-end outer frame (14). The second linear guide (25) is slidably connected to the tail-end inner movable plate (20). A tail-end pressing component (26) is provided on the upper side of the tail-end inner movable plate (20). A limit block (27) is fixedly installed on the outer side of the tail-end pressing component (26).

2. The novel automatic clamping device for excavator main platform according to claim 1, characterized in that: The tail junction box (16) and the solenoid valve cover (21) are fixedly installed on the outside of the tail outer frame (14), and the head junction box (5) is fixedly installed on the outside of the head positioning cover (9).

3. The novel automatic clamping device for excavator main platform according to claim 1, characterized in that: The movable hydraulic lifting and clamping assembly (13) includes a cylinder (1301). The cylinder (1301) is fixedly installed on the lower part of the head outer frame (4). A floating joint (1302) is fixedly installed on the movable end of the cylinder (1301). The floating joint (1302) is fixedly connected to the movable frame (12). A clamping cylinder (1303) and a chuck (1305) are fixedly installed on the upper side of the movable frame (12). A cylinder push block (1304) is fixedly installed on the movable end of the clamping cylinder (1303). A clamping block (1306) is fixedly installed on the lower side of the chuck (1305).

4. The novel automatic clamping device for excavator main platform according to claim 3, characterized in that: The clamping cylinder (1303) and the cylinder pusher (1304) are located directly below the chuck (1305). The clamping cylinder (1303), the chuck (1305), the cylinder pusher (1304) and the clamping block (1306) are provided in two identical sets. The two sets of clamping cylinders (1303), chucks (1305), cylinder pushers (1304) and clamping blocks (1306) are symmetrically distributed on both sides of cylinder one (1301).

5. The novel automatic clamping device for excavator main platform according to claim 1, characterized in that: The tail pressing assembly (26) includes a pressing cylinder (2601). The pressing cylinder (2601) is fixedly installed on the lower part of the tail inner movable plate (20). A connecting block (2602) is fixedly installed on the movable end of the pressing cylinder (2601). An ear seat (2606) is fixedly installed on the upper side of the tail inner movable plate (20). A slider (2607) is fixedly installed on the inner side of the ear seat (2606). A third linear guide (2608) is slidably installed on the outer side of the slider (2607). A connecting rod (2603) is fixedly installed on the side of the third linear guide (2608) away from the slider (2607). A pressing block (2604) is fixedly installed on the top of the connecting rod (2603). A pressing floating block (2605) is fixedly installed on the lower side of the pressing block (2604).

6. The novel automatic clamping device for excavator main platform according to claim 5, characterized in that: The connecting block (2602) is fixedly connected to the connecting rod (2603). The ear seat (2606), slider (2607) and third rail (2608) are provided in two identical sets. The two sets of ear seats (2606), sliders (2607) and third rails (2608) are symmetrically distributed on both sides of the connecting rod (2603).

7. The novel automatic clamping device for excavator main platform according to claim 1, characterized in that: The head and tail material absence detection components (6 and 17) have the same structure. Both the head and tail material absence detection components (6 and 17) include a bracket (2801). A proximity switch (2802) is fixedly installed on the inner side of the bracket (2801). A detection component housing (2803) is fixedly installed on the top of the bracket (2801) by bolts. An end cap (2807) is fixedly installed on the top of the detection component housing (2803) by bolts. A guide sleeve (2804) is fixedly installed inside the detection component housing (2803). A push rod (2806) and a spring (2805) are provided inside the guide sleeve (2804). The push rod (2806) is located inside the spring (2805).

8. A novel automatic clamping device for excavator main platform according to claim 7, characterized in that: The push rod (2806) is located directly above the proximity switch (2802). The push rod (2806) is slidably connected to the guide sleeve (2804). The cross-section of the push rod (2806) is a cross shape.

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