Leakage-proof grab bucket of gantry crane

Abstract

The utility model discloses a leakage-proof grab bucket of a gantry crane, which belongs to the technical field of harbor machinery, comprises a grab bucket body and is characterized in that a groove is arranged at the lower end part of a side cutting edge plate of the grab bucket body, and a leakage-proof mechanism is arranged in the groove; the anti-leakage mechanism comprises a wear-resisting plate, side guide plates and springs, the two ends of the wear-resisting plate are connected with the side guide plates respectively, the wear-resisting plate is installed at the position of the groove of the grab bucket body, the inner end of the wear-resisting plate protrudes out of the groove, the two side guide plates are clamped on the outer sides of the side cutting edge plates, and the groove bottom of the groove of the grab bucket body is connected with the wear-resisting plate through the springs; long-strip-shaped guide holes are formed in the side guide plates, guide screws corresponding to the long-strip-shaped guide holes are arranged on the inner wall and the outer wall of a side cutting edge plate of the grab bucket body respectively, and the guide screws penetrate through the long-strip-shaped guide holes to be in threaded fit with the positioning nuts. Compared with the prior art, the wear-resisting plate is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of port machinery, in particular to a leak-proof grab bucket of a portal crane. Background Art

[0002] In the busy port operations, gantry cranes play a vital role. They usually work closely with two-piece grabs to efficiently complete the loading and unloading tasks of bulk materials. As a key accessory of gantry cranes, two-piece grabs are exquisitely designed and easy to operate. They can quickly and accurately grab and unload various bulk materials, such as coal, ore, grain, etc.

[0003] However, during long-term operation, two-piece grabs will also face many challenges. Among them, the most common problem is wear. Since the side edge plate of the two-piece grab is the part that directly contacts the bulk materials, after long-term, high-intensity friction and collision, its lower end often shows wear and depression. This wear not only reduces the grab's grasping ability, but may also cause a large gap to appear in the two-piece grab after closing.

[0004] When the two-piece grab is closed, if there is a wear depression at the lower end of the side cutting plate, a gap will appear between the two pieces that should have been tightly fitted. This gap causes some materials to be lost during the grabbing and transportation process. The existing solution is to cut the depressed position at the lower end of the grab side cutting plate and then re-weld the cut steel plate onto the side cutting plate. This is not only time-consuming and labor-intensive, but also reduces loading and unloading efficiency and increases operating costs. Summary of the invention

[0005] The utility model aims to provide a leak-proof grab bucket for a portal crane to address the deficiencies of the above prior art, so as to facilitate the replacement of wear-resistant plates.

[0006] The utility model provides a leak-proof grab for a gantry crane, comprising a grab body, characterized in that: a groove is provided at the lower end portion of the side cutting edge plate of the grab body, and a leak-proof mechanism is installed in the groove; the leak-proof mechanism comprises a wear-resistant plate, a side guide plate and a spring, both ends of the wear-resistant plate are respectively connected to the side guide plates, the wear-resistant plate is installed at the groove position of the grab body, the inner end of the wear-resistant plate protrudes from the groove, the guide plates on both sides are clamped on the outer side of the side cutting edge plate, and the groove bottom of the groove of the grab body is connected to the wear-resistant plate by a spring; an elongated guide hole is provided on the side guide plate, and guide screws corresponding to the elongated guide hole are respectively provided on the inner and outer walls of the side cutting edge plate of the grab body, and the guide screws pass through the elongated guide hole and cooperate with the thread of the positioning nut.

[0007] Furthermore, the grab bucket body has a threaded blind hole, and one end of the guide screw is threadably matched with the threaded blind hole on the grab bucket body.

[0008] Furthermore, an adjusting threaded hole corresponding to the spring is provided on the bottom wall of the groove of the grab body, the adjusting threaded hole is threadedly matched with one end of the adjusting screw, the other end of the adjusting screw is provided with a shaft ring, and one end of the spring is connected to the shaft ring of the adjusting screw.

[0009] Furthermore, a hexagonal blind hole is provided at the end of the adjusting screw.

[0010] Furthermore, the wear-resistant plate includes a base plate and an outer wear plate. The base plate is fixedly connected to the side guide plate. A threaded through hole is provided on the base plate. The outer wear plate is provided with a stepped through hole corresponding to the threaded through hole of the base plate. The stepped through hole includes a large diameter hole and a small diameter hole. The fixing bolts pass through the stepped through hole on the outer wear plate and are threadedly matched with the threaded through hole on the base plate to fix the outer wear plate to the base plate.

[0011] Furthermore, the fixing bolt passes through the threaded through hole of the base plate, one end of the spring is sleeved on the outside of the fixing bolt, and the other end of the spring is sleeved on one end of the adjusting screw.

[0012] Compared with the prior art, the utility model has the following outstanding beneficial effects:

[0013] 1. When the side edge plate of the grab bucket of the utility model is worn and sunken, it is not necessary to cut or re-weld the steel plate. It is only necessary to remove the worn outer grinding plate from the bottom plate and replace it with a new one.

[0014] 2. When the two-piece grab of the utility model is closed, the two wear-resistant plates fit together, compressing the spring, and the spring tightly fits the two wear-resistant plates together through elastic force, thereby avoiding material leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is the front view of the utility model.

[0017] Figure 3 yes Figure 2 Cross-sectional view of the AA portion.

[0018] Figure 4 yes Figure 3 A partial enlarged view of part B.

[0019] Figure 5 It is a schematic diagram of the internal structure of the utility model.

[0020] Figure 6 It is a structural schematic diagram of the side guide plate part of the utility model. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0022] like Figures 1 to 5 As shown, the utility model comprises a grab bucket body 1 and a leak-proof mechanism 2. The grab bucket body 1 is an existing device, and its specific structure is not described in detail.

[0023] The lower end portion of the side cutting edge plate of the grab bucket body 1 is provided with a groove, and a leak-proof mechanism 2 is installed in the groove.

[0024] The anti-leakage mechanism 2 includes a wear-resistant plate 23, a side guide plate 24 and a spring 22. The two ends of the wear-resistant plate 23 are respectively vertically fixedly connected to the side guide plates 24. The wear-resistant plate 23 is installed at the groove position of the grab body 1. The inner end of the wear-resistant plate 23 protrudes from the groove. The guide plates 24 on both sides are clamped on the outside of the side cutting edge plate. The bottom of the groove of the grab body 1 is connected to the wear-resistant plate 23 through a spring 22.

[0025] The number of the springs 22 between the groove bottom of the groove of the grab body 1 and the wear-resistant plate 23 is one, two or more.

[0026] like Figure 6 As shown, the side guide plate 24 is provided with a long guide hole, and the inner and outer walls of the side cutting edge plate of the grab body 1 are respectively provided with guide screws 25 corresponding to the long guide hole, and the guide screw 25 passes through the long guide hole and is threadedly matched with the positioning nut 26.

[0027] The number of the elongated guide holes on the side guide plate 24 is two or more.

[0028] In the optimized solution, the threaded blind hole on the grab body 1 is provided, and one end of the guide screw 25 is threadably matched with the threaded blind hole on the grab body 1 .

[0029] The bottom wall of the groove of the grab body 1 is provided with an adjustment threaded hole corresponding to the spring 22, the adjustment threaded hole is threadedly matched with one end of the adjustment screw 21, the other end of the adjustment screw 21 is provided with a collar, and one end of the spring 22 is connected to the collar of the adjustment screw 21. By rotating the adjustment screw 21, the compression amount of the spring 22 can be adjusted, thereby adjusting the elastic force of the spring 22.

[0030] The end of the adjusting screw 21 is provided with a hexagonal blind hole, so that it can be screwed into the adjusting threaded hole by a hexagonal wrench.

[0031] In the optimization scheme, the wear-resistant plate 23 includes a bottom plate 232 and an outer wear plate 231. The bottom plate 232 is fixedly connected to the side guide plate 24. The bottom plate 232 is provided with a threaded through hole. The outer wear plate 231 is provided with a stepped through hole corresponding to the threaded through hole of the bottom plate 232. The stepped through hole includes a large diameter hole and a small diameter hole. The fixing bolt 233 passes through the stepped through hole on the outer wear plate 231 and is threadedly matched with the threaded through hole on the bottom plate 232 to fix the outer wear plate 231 on the bottom plate 232.

[0032] The fixing bolt 233 passes through the threaded through hole of the bottom plate 232 , one end of the spring 22 is sleeved on the outside of the fixing bolt 233 , and the other end of the spring 22 is sleeved on one end of the adjusting screw 21 .

[0033] The operation process is as follows: when the utility model is used, when the two-piece grab is closed, the two wear-resistant plates 23 fit together, compressing the spring 22, and the spring 22 tightly fits the two wear-resistant plates 23 together through elastic force, thereby avoiding the phenomenon of material leakage. When the outer wear plate 231 is seriously worn, the outer wear plate 231 is removed from the bottom plate 232 and replaced with a new outer wear plate 231.

[0034] It should be noted that the specific embodiments of the present invention have been described in detail. For those skilled in the art, various obvious changes to the present invention without departing from the spirit and scope of the present invention are within the protection scope of the present invention.

Claims

1. A leakproof grab bucket for a portal crane, comprising a grab bucket body (1), characterized in that: The lower end portion of the side cutting edge plate of the grab bucket body (1) is provided with a groove, and a leak-proof mechanism (2) is installed in the groove; the leak-proof mechanism (2) comprises a wear-resistant plate (23), a side guide plate (24) and a spring (22); the two ends of the wear-resistant plate (23) are respectively connected to the side guide plates (24); the wear-resistant plate (23) is installed at the position of the groove of the grab bucket body (1); the inner end of the wear-resistant plate (23) protrudes from the groove; the guide plates (24) on both sides are clamped on the outer side of the side cutting edge plate; the groove bottom of the groove of the grab bucket body (1) and the wear-resistant plate (23) are connected via the spring (22); the side guide plate (24) is provided with a long strip guide hole; the inner and outer walls of the side cutting edge plate of the grab bucket body (1) are respectively provided with guide screws (25) corresponding to the long strip guide hole; the guide screws (25) pass through the long strip guide hole and are threadedly engaged with the positioning nut (26).

2. The anti-leakage grab bucket of a portal crane according to claim 1, characterized in that: The grab bucket body (1) has a threaded blind hole, and one end of the guide screw (25) is threadably matched with the threaded blind hole on the grab bucket body (1).

3. The anti-leakage grab bucket of a portal crane according to claim 1, characterized in that: The bottom wall of the groove of the grab bucket body (1) is provided with an adjustment threaded hole corresponding to the spring (22), the adjustment threaded hole is threadedly matched with one end of the adjustment screw (21), the other end of the adjustment screw (21) is provided with a shaft ring, and one end of the spring (22) is connected to the shaft ring of the adjustment screw (21).

4. The anti-leakage grab bucket of a portal crane according to claim 3, characterized in that: The end of the adjusting screw (21) is provided with a hexagonal blind hole.

5. The anti-leakage grab bucket of a portal crane according to claim 1, characterized in that: The wear-resistant plate (23) comprises a bottom plate (232) and an outer wear plate (231); the bottom plate (232) is fixedly connected to the side guide plate (24); a threaded through hole is provided on the bottom plate (232); a stepped through hole corresponding to the threaded through hole of the bottom plate (232) is provided on the outer wear plate (231); the stepped through hole comprises a large-diameter hole and a small-diameter hole; a fixing bolt (233) passes through the stepped through hole on the outer wear plate (231) and is threadably engaged with the threaded through hole on the bottom plate (232), thereby fixing the outer wear plate (231) to the bottom plate (232).

6. The anti-leakage grab bucket of a portal crane according to claim 5, characterized in that: The fixing bolt (233) passes through the threaded through hole of the bottom plate (232), one end of the spring (22) is sleeved on the outside of the fixing bolt (233), and the other end of the spring (22) is sleeved on one end of the adjusting screw (21).

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