Hydraulic oil cylinder rod head structure for vertical mill

Abstract

The utility model discloses a hydraulic oil cylinder rod head structure for a vertical mill, which comprises a semicircular upper lug ring and a semicircular lower lug ring, the upper lug ring and the lower lug ring are encircled to form the rod head structure, a joint bearing is arranged in the rod head structure, and a connecting lug handle is integrally formed at the tail end of the upper lug ring and the tail end of the lower lug ring. A trunnion is integrally formed at the bottom of the lower lug ring, and the trunnion and the oil cylinder are fixed through a connecting clamping plate. The utility model relates to the technical field of hydraulic rod heads, the vertical mill oil cylinder rod head structure adopts a split type design, and when the shearing force is too large, a connecting bolt can be preferentially broken, and a rod head lug ring cannot be damaged, so that the economic loss is greatly reduced, and the service life of the rod head is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic rod heads, and specifically relates to a hydraulic cylinder rod head structure for a vertical mill. Background Technique

[0002] The rod head of the vertical mill hydraulic cylinder is a key component connecting the piston rod of the hydraulic cylinder and the transmission arm, and transmits the pulling force of the hydraulic system to the grinding roller, and finally generates the grinding pressure. The rod head of the oil cylinder not only has to bear the static pressure provided by the hydraulic system, but also has to bear the instantaneous impact brought by the vibration caused by the unstable material layer of the vertical mill. The rod head of the oil cylinder is also the part with relatively weak stress in the design of the oil cylinder, and the rationality of its structure is directly related to the safety of the use of the oil cylinder and the normal production of the vertical mill.

[0003] The existing rod head of the oil cylinder is an integral structure and is prone to fracture, and this component is located at the lower part of the swing arm of the vertical mill, and it is also relatively difficult to disassemble. Content of the Utility Model

[0004] (1) Technical Problem to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a hydraulic cylinder rod head structure for a vertical mill, which solves the problem of short service life of the existing rod head of the oil cylinder.

[0006] (2) Technical Solution

[0007] To achieve the above object, the utility model provides the following technical solution: A hydraulic cylinder rod head structure for a vertical mill, including a semi-circular upper earring and a lower earring. The upper earring and the lower earring enclose to form a rod head structure, and a spherical plain bearing is arranged inside the rod head structure. The ends of the upper earring and the lower earring are integrally formed with connecting ear handles.

[0008] An ear shaft is integrally formed at the bottom of the lower earring, and the ear shaft is fixed to the oil cylinder through a connecting clamping plate.

[0009] The upper earring and the lower earring are fixed through connecting bolts, and a gap is reserved between the connecting ear handles on the upper and lower sides, and a shock-absorbing spring pad is arranged in this gap.

[0010] A lubricating oil pipe is arranged on the upper earring.

[0011] Preferably, an oil seal is arranged on the inner side of the gap between the connecting ear handles on the upper and lower sides, and the oil seal can prevent the lubricating oil from seeping into the shock-absorbing spring pad.

[0012] Preferably, a dust cover is arranged at the connection between the connecting clamping plate and the oil cylinder.

[0013] Preferably, the ear shaft and the connecting clamping plate are in threaded connection.

[0014] (3) Beneficial Effects

[0015] The utility model provides a hydraulic cylinder rod head structure for a vertical mill, which has the following beneficial effects:

[0016] 1. The rod head structure of the vertical mill cylinder adopts a split design. When the shear force is too large, the connecting bolt will break first, and the rod head earring will not be damaged, thus greatly reducing economic losses and improving the service life of the rod head.

[0017] 2. The earring is provided with a shock-absorbing washer, which is composed of two parts. It can not only reduce the noise of the vertical mill, but also reduce the impact of the roller vibration on the cylinder and reduce the oil leakage phenomenon.

[0018] 3. The installation of the cylinder rod head is convenient.

[0019] 4. The combined earring structure is also convenient for casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the utility model.

[0021] In the figure: 1, upper earring; 2, lower earring; 3, connecting ear handle; 4, trunnion; 5, connecting splint; 6, cylinder; 7, spherical plain bearing; 8, connecting bolt; 9, shock-absorbing spring pad; 10, lubricating oil pipe; 11, oil seal; 12, dust cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0023] As Figure 1 shown, the present utility model provides a technical solution: a hydraulic cylinder rod head structure for a vertical mill, including a semi-circular upper earring 1 and a lower earring 2. The upper earring 1 and the lower earring 2 enclose to form a rod head structure. A spherical plain bearing 7 is arranged inside the rod head structure. The ends of the upper earring 1 and the lower earring 2 are integrally formed with a connecting ear handle 3.

[0024] The bottom of the lower earring 2 is integrally formed with a trunnion 4. The trunnion 4 and the cylinder 6 are fixed through a connecting splint 5. The trunnion 4 and the connecting splint 5 are in threaded connection. A dust cover 12 is arranged at the connection between the connecting splint 5 and the cylinder 6. The purpose of setting the dust cover 12 is to prevent dust from invading.

[0025] The upper earring 1 and the lower earring 2 are fixed by a connecting bolt 8, and there is a gap reserved between the connecting ear handles 3 on the upper and lower sides. A shock-absorbing spring pad 9 is arranged in this gap.

[0026] A lubricating oil pipe 10 is arranged on the upper earring 1. Lubricating oil enters the inside of the rod head structure through the lubricating oil pipe 10 to lubricate the spherical plain bearing 7.

[0027] An oil seal 11 is arranged on the inner side of the gap between the connecting ear handles 3 on the upper and lower sides. The oil seal 11 can prevent the lubricating oil from seeping into the shock-absorbing spring pad 9 and avoid the failure of the shock-absorbing spring pad 9.

[0028] During use, first place the shock-absorbing spring pad 9 between the upper earring 1 and the lower earring 2, then fix the upper earring 1 and the lower earring 2 through the connecting bolt 8, and then fix the oil cylinder 6 and the trunnion 4 through the connecting splint 5.

[0029] When the rod head structure is stressed, the shock-absorbing spring pad 9 between the upper earring 1 and the lower earring 2 can be used for shock absorption and force relief. Even if the shear force is too large, the first to be damaged is the connecting bolt 8, rather than causing the upper and lower earrings to break. In the later stage, just replace the new bolt and install it, and the upper and lower earrings can continue to be used.

[0030] In summary, this rod head structure of the hydraulic cylinder for vertical mill adopts a split design. When the shear force is too large, it can first cause the connecting bolt to break, and will not cause damage to the rod head earrings, thus greatly reducing economic losses and increasing the service life of the rod head.

[0031] It should be noted that the electrical components mentioned in this article are all electrically connected to the external main controller and 220V mains. And the main controller can be a conventional known device such as a computer for control. Its control principle, internal structure, control switch method, etc. are all conventional means of the existing technology and are directly cited here without further elaboration. In this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder rod head structure for a vertical mill, characterized in that: The rod head structure comprises a semicircular upper earring (1) and a lower earring (2), wherein the upper earring (1) and the lower earring (2) are combined to form a rod head structure, wherein a joint bearing (7) is arranged in the rod head structure, and a connecting ear handle (3) is integrally formed at the ends of the upper earring (1) and the lower earring (2); The bottom of the lower earring (2) is integrally formed with an ear shaft (4), and the ear shaft (4) and the oil cylinder (6) are fixed by a connecting clamp (5); The upper earring (1) and the lower earring (2) are fixed by connecting bolts (8), and a gap is reserved between the connecting ear handles (3) on the upper and lower sides, and a shock-absorbing spring pad (9) is arranged in the gap; A lubricating oil pipe (10) is arranged on the upper earring (1).

2. The hydraulic cylinder rod head structure for a vertical mill according to claim 1, characterized in that: An oil seal (11) is arranged inside the gap between the connecting ear handles (3) on the upper and lower sides, and the oil seal (11) can prevent lubricating oil from penetrating into the shock absorbing spring pad (9).

3. The hydraulic cylinder rod head structure for a vertical mill according to claim 1, characterized in that: A dust cover (12) is provided at the connection between the connecting clamping plate (5) and the oil cylinder (6).

4. The hydraulic cylinder rod head structure for a vertical mill according to claim 1, characterized in that: The ear shaft (4) and the connecting clamping plate (5) are threadedly connected.

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