Fixing device for C-shaped hook pin shaft
By using a combination structure of T-shaped positioning plate and positioning sleeve on the C-type hook pin shaft, the problem of the pin shaft falling off under high load conditions is solved, achieving higher fixing reliability and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-27
- Publication Date
- 2026-03-20
AI Technical Summary
The existing C-type hook pin fixing device is prone to falling off under high load conditions, causing safety hazards. In particular, when the conveyor chain drives the C-type hook along the track, the pin may swing and impact due to stalling, causing a falling off accident.
The system adopts a combination structure of T-shaped positioning plate and positioning sleeve, which is fixed to the lifting ring by bolts. The pin is connected to the lifting ring laterally and welded to the lifting ring by the positioning sleeve to form a limit. The original annular positioning groove is eliminated and replaced with a square through hole and a vertical side plate is added to enhance the positioning stability.
It effectively prevents the pin from falling off due to the swing of the hook under high load conditions, improves the reliability of the fixing device, avoids the problem of falling off due to loosening or cutting of the locking plate, and ensures operation safety.
Smart Images
Figure CN224014613U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a transport machine technical field, namely a fixing device of C hook pin shaft. BACKGROUND
[0002] In the prior art, the C hook used in the hanging and stacking hook type coil transport machine is widely applied in the collecting area of high-speed wire production line, and the purpose is to drive the C hook loaded with the coil to run along the track through the transport machine chain, the coil continues to cool, and the artificial inspection, sampling and trimming work, baling machine baling, weighing, marking and other work are completed, finally the coil is sent to the coil unloading station, the coil is unloaded by the unloading machine and placed in the coil collecting station, and the whole work cycle is completed. The pin shaft of the C hook needs to bear the whole weight of the hook body and the coil. The original fixing device is composed of a lifting eye, an M12 bolt, a locking piece and a pin shaft (see Figure 4 ), and the function is to use the locking piece to position the pin shaft axially on the lifting eye, that is, two M12 bolt holes are processed on the lifting eye, the pin shaft is exposed to the positioning ring groove after passing through the lifting eye, the locking piece is clamped into the pin shaft clamping ring, and the M12 bolt is fastened on the M12 screw hole of the lifting eye through the locking piece, that is, the locking piece is fastened on the lifting eye, so as to play the role of axial locking of the pin shaft. Since the C hook is loaded with the coil, the weight of the coil reaches 2.3 tons, the weight of the C hook is 1.1 tons, the transport machine chain drives the 3.4-ton fully loaded C hook to run along the track, when the C hook reaches the stop position, in the case of losing speed, the phenomenon of swinging hook and mutual impact often occurs, at this time the pin shaft on the lifting beam is stressed, the M12 bolt and the locking piece fall off, the pin shaft is out of the lifting eye, and the accident of C hook falling off occurs, which seriously threatens the life safety of the surrounding operators. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at the above-mentioned shortage and provides a fixing device of C hook pin shaft which is reasonable in structure and safe to use.
[0004] The technical solution of the utility model is: a fixing device of C hook pin shaft, which comprises a positioning plate fixed on a lifting eye through a bolt, a pin shaft transversely connected to the lifting eye, and a positioning plate in limiting connection with the pin shaft, wherein the positioning plate is a T-shaped positioning plate, the outer end of the vertical plate of the T-shaped positioning plate is connected to a positioning sleeve, and the positioning sleeve is welded to the lifting eye; and the pin shaft is provided with a square through hole at the connection position with the positioning plate.
[0005] The positioning plate is fixed on the lifting eye through two bolts.
[0006] The utility model discloses a simple structure, convenient operation, the T type positioning board is fixed through the positioning sleeve and the lifting ring with the pin shaft, and the pin shaft is limited, and this positioning mode solves the influence of the action force of the pin shaft due to the swing of the hook body on the positioning of the lock piece before improvement, and the shearing force acting on the bolt is decomposed by the positioning sleeve, so that the problem of the pin shaft out of the lock piece is solved, and the reliability of the T type positioning board positioning is ensured from the structure.
[0007] The embodiments of the utility model will be described further in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 It is the structure diagram of the utility model.
[0009] Figure 2 It is Figure 1 It is the left view structure diagram.
[0010] Figure 3 It is the structure diagram of pin shaft.
[0011] Figure 4 It is the structure diagram of the fixing device of C type hook pin shaft before improvement.
[0012] In the drawing, the names of parts are as follows: lifting ring 1, bolt 2, lock piece 3, pin shaft 4, positioning sleeve 5, T type positioning board 6, vertical edge plate 7, square through hole 8. PREFERRED EMBODIMENT
[0013] Referring to Figure 1 、 2 , 3, a kind of fixing device of C type hook pin shaft, including the T type positioning board 6 of being fixed in lifting ring 1 by two bolts 2, pin shaft 4 is connected in lifting ring 1 transversely.T type positioning board 6's vertical edge plate 7 outer end connects positioning sleeve 5, positioning sleeve 5 is welded with lifting ring 1 connection.Pin shaft 4 and T type positioning board 6 connection place have square through hole 8, vertical edge plate 7 passes through square through hole.Change the part structure of the positioning of pin shaft 4, cancel the previous annular positioning groove, in the position of original annular positioning groove, process a square through hole 8, design T type positioning board 6 into the original character type positioning board, and there are two bolt through holes of φ14mm on T type positioning board 6 top, for installing M12's bolt 2, design into the vertical edge plate 7 of extending 30mm through the square through hole 8 of pin shaft 4 in T type positioning board 6 lower end, design positioning sleeve 5 of being inserted with vertical edge plate 7, this positioning sleeve 5 is welded with lifting ring 1 positioning.
[0014] Method for use: the pin shaft 4 is passed through the lifting hole of the lifting ring 1, and then the T-shaped positioning plate 6 is passed out of the square through hole 8 of the pin shaft 4, and the T-shaped positioning plate 6 is fixed to the lifting ring 1 by the M12*20mm bolt 2, finally the positioning sleeve 5 is sleeved on the part of the T-shaped positioning plate 6 extending out of the pin shaft 4, and is welded to the lifting ring 1, so that the positioning of the pin shaft 4 is completed.
[0015] The above description is only a specific implementation manner of the present application, and various illustrations do not constitute limitation on the essential content of the present application.
Claims
1. A fixing device for a C-type hook pin, comprising a positioning plate fixed to a lifting ring (1) by bolts (2), a pin (4) laterally connected to the lifting ring (1), and the positioning plate and the pin (4) being in a limiting connection, characterized in that... The positioning plate is a T-shaped positioning plate (6). The outer end of the vertical side plate of the T-shaped positioning plate (6) is connected to the positioning sleeve (5). The positioning sleeve (5) is welded to the lifting ring (1). There is a square through hole (8) at the connection between the pin (4) and the positioning plate.
2. A fixing device for a C-type hook pin shaft according to claim 1, characterized in that... The positioning plate is fixed to the lifting ring (1) by two bolts (2).