A bucket shaft anti-detachment pin connection device for engineering machinery
By designing an anti-detachment pin connection device for bucket shafts in engineering machinery, and utilizing a combination of components such as slot seats, slide rods, and transmission plates, the problem of pin connection devices falling off during use has been solved, achieving a more stable connection effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QUANZHOU HONGDING CONSTR MASCH CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-02
AI Technical Summary
The existing pin connection device is prone to falling off during normal use, posing a safety hazard.
A bucket shaft anti-detachment pin connection device for engineering machinery was designed, including a bucket, a connecting shaft, a connecting mechanism, and a blocking mechanism. Through the combination of components such as slot seat, slide rod, transmission plate, positioning insert, vertical baffle, spring assembly, and blocking cover, a more secure connection is achieved to prevent detachment.
This effectively prevents the pin connection from falling off during operation, ensuring a more stable connection between structures and enhancing the reliability and durability of the connection.
Smart Images

Figure CN224315326U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connecting device technology, specifically a bucket shaft anti-detachment pin connecting device for engineering machinery. Background Technology
[0002] A pin connection device is a mechanical structure that uses pins to connect two or more components. It plays an important role in fields such as machinery, construction, and vehicles. Its core functions are to transmit force or torque, realize relative motion, position, and provide overload protection. It also has advantages such as simple structure, high reliability, and convenient assembly and disassembly.
[0003] According to a patent published on the China Patent Network, the patent title is "A Pin Shaft Connecting Device," patent application number 201520524922.2. This utility model provides a pin shaft connecting device, including a shaft, a shaft part that mates with the shaft, and a pin for fixing the shaft and shaft part. The shaft and shaft part are respectively provided with a first arc groove and a second arc groove, which together form a circular groove. The pin is inserted into this assembled circular groove. The pin and shaft are installed in parallel directions on the shaft part. The pin achieves circumferential fixation between the shaft and shaft part to transmit motion and torque, which not only reduces processing steps, thereby simplifying processing and improving production efficiency, but also facilitates disassembly and assembly, making it convenient for parts replacement and maintenance, and saving costs. However, the aforementioned pin shaft connecting device may detach during normal use, and its pin shaft connection cannot be guaranteed to be stable, posing a certain safety hazard.
[0004] Therefore, the pin connection device needs to be redesigned and modified to effectively prevent the structure from falling off during normal use. Utility Model Content
[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a bucket shaft anti-detachment pin connection device for engineering machinery, which has the advantage of preventing structural detachment and solves the problem of unstable connection that is prone to detachment.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a bucket shaft anti-detachment pin connection device for engineering machinery, comprising a bucket;
[0007] A connecting shaft is provided at the top of the bucket;
[0008] A connecting mechanism is fixedly connected to the outside of the bucket;
[0009] The connecting mechanism includes a slot seat, which is fixedly connected to the outside of the bucket. A connecting strip is provided on the outside of the slot seat, and a positioning hole is opened on the surface of the connecting strip. Slide rods are fixedly connected to both sides of the slot seat, and a transmission plate is slidably connected to the surface of the slide rods. A positioning strip is fixedly connected to the inner side of the transmission plate. A horizontal plate is slidably connected to the outside of the slot seat. A vertical baffle is fixedly connected to the top of the horizontal plate. A spring assembly is fixedly connected to the bottom of the horizontal plate. The bottom of the spring assembly is fixedly connected to the inner wall of the slot seat. A blocking mechanism is fixedly connected to the top of the slot seat.
[0010] In a preferred embodiment of this utility model, the shielding mechanism includes a rotating shaft seat, the bottom of which is fixedly connected to the top of the slot seat, a rotating plate movably connected to the top of the rotating shaft seat, a shielding cover fixedly connected to the outer side of the rotating plate, and a retaining strip fixedly connected to the inner side of the shielding cover.
[0011] As a preferred embodiment of this utility model, a connecting strip is fixedly connected to the outer side of the shielding cover, and the inner side of the connecting strip is fixedly connected to the outer side of the clip.
[0012] As a preferred embodiment of this utility model, a connecting plate is fixedly connected to the top of the rotating plate, and the bottom of the connecting plate is fixedly connected to the top of the shielding cover.
[0013] As a preferred embodiment of this invention, a reinforcing strip is fixedly connected to the top of the shielding cover, and the bottom of the reinforcing strip is used in conjunction with the shielding cover.
[0014] As a preferred embodiment of this utility model, a right-angle plate is fixedly connected to the top of the horizontal plate, and the outer side of the right-angle plate is fixedly connected to the inner side of the vertical baffle.
[0015] As a preferred embodiment of this invention, a reinforcing ring is fixedly connected to the surface of the positioning insert, and the reinforcing ring is used in conjunction with the positioning insert.
[0016] As a preferred embodiment of this invention, a support block is fixedly connected to the bottom of the slot seat, and the back of the support block is fixedly connected to the outer side of the bucket.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] 1. By setting up a connecting mechanism, this utility model provides a more robust connection method, effectively avoiding the phenomenon that conventional pin shaft connection devices may detach during operation, and ensuring a more stable connection between structures.
[0019] 2. This utility model, through the setting of the shielding mechanism, can shield the pin shaft part, avoiding the phenomenon of unstable connection caused by external factors.
[0020] 3. The present invention can reinforce the cover by setting the connecting strip, strengthen the connection between the cover and the clip, and make the two more stable.
[0021] 4. The connecting plate in this utility model can reinforce the rotating plate, strengthen the connection between the rotating plate and the cover, and prevent the two from separating.
[0022] 5. By adding reinforcing strips, this utility model can provide an auxiliary effect to the cover, thereby strengthening its own strength and making it more durable.
[0023] 6. By setting up a right-angle plate, this utility model can reinforce the vertical baffle, strengthen the connection between the vertical baffle and the horizontal plate, and make the two more stably connected.
[0024] 7. By setting a reinforcing ring, this utility model can strengthen the positioning strip, ensuring that the positioning strip can operate more stably and preventing it from falling off.
[0025] 8. The present invention, through the setting of the support block, can support the slot seat and prevent the slot seat from falling off. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of this utility model;
[0027] Figure 2 This is a structural diagram of the connection mechanism of this utility model;
[0028] Figure 3 The structure of this utility model Figure 2 Enlarged structural diagram at point A in the middle;
[0029] Figure 4 This is a partial structural exploded view of the present invention;
[0030] Figure 5 This is a structural diagram of the shielding mechanism of this utility model;
[0031] Figure 6 The structure of this utility model Figure 5 Enlarged structural diagram at point B in the middle.
[0032] In the diagram: 1. Bucket; 2. Connecting shaft; 3. Connecting mechanism; 31. Slot seat; 32. Connecting strip; 33. Positioning hole; 34. Slide rod; 35. Transmission plate; 36. Positioning strip; 37. Horizontal plate; 38. Vertical baffle; 39. Spring assembly; 4. Covering mechanism; 41. Rotary shaft seat; 42. Rotating plate; 43. Cover; 44. Locking strip; 5. Connecting strip; 6. Connecting plate; 7. Reinforcing strip; 8. Right angle plate; 9. Reinforcing ring; 10. Support block. Detailed Implementation
[0033] 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.
[0034] like Figures 1 to 6 As shown, the present invention provides a bucket shaft anti-detachment pin connection device for engineering machinery, including a bucket 1;
[0035] A connecting shaft 2 is provided on the top of the bucket 1;
[0036] A connecting mechanism 3 is fixedly connected to the outer side of the bucket 1;
[0037] The connecting mechanism 3 includes a slot seat 31, which is fixedly connected to the outside of the bucket 1. A connecting strip 32 is provided on the outside of the slot seat 31. A positioning hole 33 is opened on the surface of the connecting strip 32. Slide rods 34 are fixedly connected to both sides of the slot seat 31. A transmission plate 35 is slidably connected to the surface of the slide rod 34. A positioning strip 36 is fixedly connected to the inside of the transmission plate 35. A horizontal plate 37 is slidably connected to the outside of the slot seat 31. A vertical baffle 38 is fixedly connected to the top of the horizontal plate 37. A spring assembly 39 is fixedly connected to the bottom of the horizontal plate 37. The bottom of the spring assembly 39 is fixedly connected to the inner wall of the slot seat 31. A blocking mechanism 4 is fixedly connected to the top of the slot seat 31.
[0038] refer to Figure 5 The shielding mechanism 4 includes a pivot seat 41, the bottom of which is fixedly connected to the top of the slot seat 31. A rotating plate 42 is movably connected to the top of the pivot seat 41. A shielding cover 43 is fixedly connected to the outer side of the rotating plate 42. A retaining strip 44 is fixedly connected to the inner side of the shielding cover 43.
[0039] As a technical optimization of this utility model, the shielding mechanism 4 can shield the pin shaft part, thus preventing it from being affected by external factors and causing unstable connection.
[0040] refer to Figure 5 A connecting strip 5 is fixedly connected to the outer side of the cover 43, and the inner side of the connecting strip 5 is fixedly connected to the outer side of the clip 44.
[0041] As a technical optimization of this utility model, the connecting strip 5 can reinforce the cover 43, strengthen the connection between the cover 43 and the clip 44, and make the two more stable.
[0042] refer to Figure 6 A connecting plate 6 is fixedly connected to the top of the rotating plate 42, and the bottom of the connecting plate 6 is fixedly connected to the top of the cover 43.
[0043] As a technical optimization of this utility model, the connecting plate 6 can reinforce the rotating plate 42, strengthen the connection between the rotating plate 42 and the cover 43, and prevent the two from separating.
[0044] refer to Figure 6 A reinforcing strip 7 is fixedly connected to the top of the cover 43, and the bottom of the reinforcing strip 7 is used in conjunction with the cover 43.
[0045] As a technical optimization of this utility model, the setting of the reinforcing strip 7 can play an auxiliary role in the shielding cover 43, strengthen the shielding cover 43 itself, and make it more durable.
[0046] refer to Figure 3 A right-angle plate 8 is fixedly connected to the top of the horizontal plate 37, and the outer side of the right-angle plate 8 is fixedly connected to the inner side of the vertical baffle 38.
[0047] As a technical optimization of this utility model, the right-angle plate 8 can reinforce the vertical baffle 38, strengthen the connection between the vertical baffle 38 and the horizontal plate 37, and enable the two to be connected more stably.
[0048] refer to Figure 4 A reinforcing ring 9 is fixedly connected to the surface of the positioning insert 36, and the reinforcing ring 9 is used in conjunction with the positioning insert 36.
[0049] As a technical optimization of this utility model, the reinforcing ring 9 can reinforce the positioning insert 36, ensuring that the positioning insert 36 can operate more stably and preventing it from falling off.
[0050] refer to Figure 2 A support block 10 is fixedly connected to the bottom of the slot seat 31, and the back of the support block 10 is fixedly connected to the outer side of the bucket 1.
[0051] As a technical optimization of this utility model, the support block 10 can support the slot seat 31 and prevent the slot seat 31 from falling off.
[0052] The working principle and usage process of this utility model are as follows: First, the user only needs to insert the connecting strip 32 into the slot of the slot seat 31, so that the positioning hole 33 on the surface of the connecting strip is aligned with the positioning strip 36 on the sliding rod 34 on both sides of the slot seat. By pushing the transmission plate 35 along the sliding rod with external force, the positioning strip 36 is embedded in the positioning hole 33 to achieve axial fixation and prevent the pin from falling off due to vibration or external force. The horizontal plate 37 is pushed upward under the elastic force of the spring assembly 39, which drives the vertical baffle 38 to fit against the end of the connecting strip 32 to form a lateral limit and prevent the connecting strip from moving axially during operation. When it is necessary to close the cover 43, simply rotate the rotating plate 42 through the rotating shaft seat 41 to drive the cover 43 to cover the top of the slot seat 31. The locking strip 44 on the inner side of the cover is inserted into the corresponding groove of the slot seat to form a sealing structure and prevent mud, sand, rainwater and other substances from entering the connection part.
[0053] In summary, this anti-detachment pin connection device for bucket shafts in engineering machinery provides a more robust connection method by setting up a connection mechanism. It effectively avoids the phenomenon that conventional pin connection devices may detach during operation, and ensures a more stable connection between structures.
[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0055] 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 bucket shaft anti-detachment pin connection device for engineering machinery, comprising a bucket (1); A connecting shaft (2) is provided on the top of the bucket (1); A connecting mechanism (3) is fixedly connected to the outside of the bucket (1); Its features are: The connecting mechanism (3) includes a slot seat (31), which is fixedly connected to the outside of the bucket (1). A connecting strip (32) is provided on the outside of the slot seat (31). A positioning hole (33) is provided on the surface of the connecting strip (32). A slide rod (34) is fixedly connected to both sides of the slot seat (31). A transmission plate (35) is slidably connected to the surface of the slide rod (34). A positioning strip (36) is fixedly connected to the inside of the transmission plate (35). A horizontal plate (37) is slidably connected to the outside of the slot seat (31). A vertical baffle (38) is fixedly connected to the top of the horizontal plate (37). A spring assembly (39) is fixedly connected to the bottom of the horizontal plate (37). The bottom of the spring assembly (39) is fixedly connected to the inner wall of the slot seat (31). A blocking mechanism (4) is fixedly connected to the top of the slot seat (31).
2. The anti-detachment pin connection device for bucket shafts in engineering machinery according to claim 1, characterized in that: The shielding mechanism (4) includes a pivot seat (41), the bottom of which is fixedly connected to the top of the slot seat (31), a rotating plate (42) is movably connected to the top of the pivot seat (41), a shielding cover (43) is fixedly connected to the outside of the rotating plate (42), and a locking strip (44) is fixedly connected to the inside of the shielding cover (43).
3. The anti-detachment pin connection device for bucket shafts in engineering machinery according to claim 2, characterized in that: A connecting strip (5) is fixedly connected to the outer side of the cover (43), and the inner side of the connecting strip (5) is fixedly connected to the outer side of the clip (44).
4. The anti-detachment pin connection device for bucket shafts in engineering machinery according to claim 2, characterized in that: The top of the rotating plate (42) is fixedly connected to a connecting plate (6), and the bottom of the connecting plate (6) is fixedly connected to the top of the cover (43).
5. The anti-detachment pin connection device for bucket shafts in engineering machinery according to claim 2, characterized in that: The top of the cover (43) is fixedly connected to a reinforcing strip (7), and the bottom of the reinforcing strip (7) is used in conjunction with the cover (43).
6. The anti-detachment pin connection device for bucket shafts in engineering machinery according to claim 1, characterized in that: A right-angle plate (8) is fixedly connected to the top of the horizontal plate (37), and the outer side of the right-angle plate (8) is fixedly connected to the inner side of the vertical baffle (38).
7. The anti-detachment pin connection device for bucket shafts in engineering machinery according to claim 1, characterized in that: The surface of the positioning insert (36) is fixedly connected with a reinforcing ring (9), which is used in conjunction with the positioning insert (36).
8. The anti-detachment pin connection device for bucket shafts in engineering machinery according to claim 1, characterized in that: The bottom of the slot seat (31) is fixedly connected to a support block (10), and the back of the support block (10) is fixedly connected to the outside of the bucket (1).