Sucking disc of suction crane

Abstract

The utility model provides a suction crane sucker which comprises a rubber sucker body, a supporting disc is arranged on the upper side of the outer surface of the rubber sucker body, a connecting pipe penetrating through the supporting disc is installed in the middle of the upper surface of the supporting disc, the lower end of the connecting pipe is communicated with the inner space of the rubber sucker body, and the upper surface of the supporting disc is sunken downwards to form a plurality of positioning grooves. A small hole is formed in the bottom in the positioning groove, a plurality of penetrating holes aligned with the small hole are evenly formed in the top in the rubber suction cup, a positioning block is inserted into the positioning groove, a threaded blind hole is formed in the lower surface of the positioning block, and a connecting screw is inserted into a channel formed by the penetrating holes and the small hole. The supporting disc has the advantages that the threaded blind hole matched with the connecting screw does not need to be directly machined in the supporting disc, and the situation that the whole supporting disc is replaced due to the fact that the threaded blind hole is damaged is avoided.

Description

Technical Field

[0001] The utility model relates to a suction cup of a lifting machine, belonging to the field of mechanical equipment. Background Technique

[0002] The suction cup made of rubber is one of the vacuum suction cups. A rigid support plate is installed on the rubber suction cup, and then the connecting screw passes through the perforation on the rubber suction cup and is screwed into the threaded blind hole opened on the support plate to complete the connection between the support plate and the rubber suction cup. At this time, the support plate plays a role in supporting the rubber suction cup. Since the rubber suction cup needs to be replaced irregularly, it is necessary to frequently disassemble and assemble the connecting screw connecting the support plate and the rubber suction cup. During the disassembly and assembly process, the threaded blind hole directly machined on the support plate is prone to thread damage due to excessive torque. In this case, the entire support plate needs to be replaced, increasing the cost of replacing parts. Therefore, it is necessary to design a suction cup of a lifting machine. Content of the Utility Model

[0003] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a suction cup of a lifting machine to solve the problems put forward in the above background technique. The utility model does not need to directly machine the threaded blind hole matching with the connecting screw on the support plate, avoiding the replacement of the entire support plate due to the damage of the threaded blind hole.

[0004] In order to achieve the above purpose, the utility model is realized by the following technical solutions: A suction cup of a lifting machine, including a rubber suction cup, a support plate is arranged on the upper side of the outer surface of the rubber suction cup, a connecting pipe penetrating through the support plate is installed in the middle position of the upper surface of the support plate, the lower end of the connecting pipe communicates with the inner space of the rubber suction cup, a plurality of positioning grooves are formed by the downward depression of the upper surface of the support plate, small holes are opened at the bottom of the positioning grooves, a plurality of perforations aligned with the small holes are evenly opened at the top of the inner part of the rubber suction cup, positioning blocks are inserted in the positioning grooves, threaded blind holes are opened on the lower surfaces of the positioning blocks, connecting screws are inserted in the channels formed by the perforations and the small holes, one end of the connecting screw is threadedly connected in the threaded blind hole, a sealing gasket is arranged on the lower side of the positioning block, the sealing gasket is arranged in the positioning groove, and the sealing gasket is sleeved on the connecting screw.

[0005] Furthermore, a plurality of arc-shaped plates are fixedly arranged at equal intervals in a ring shape at the edge part of the top of the inner part of the rubber suction cup, a plurality of convex heads are fixedly arranged at equal intervals in a ring shape in the central area of the inner part of the rubber suction cup, and the thicknesses of the convex heads and the arc-shaped plates are both greater than the thickness of the head of the connecting screw.

[0006] Further, two bayonets for clamping a wrench are symmetrically machined on the annular side surface of the support disc. A guard plate is arranged in each bayonet, and the guard plate is in fit with the vertical surface of the bayonet. A connecting plate in contact with the upper surface of the support disc is fixedly connected to the middle position of the upper surface of the guard plate. A shaft hole is formed in one side of the upper surface of the connecting plate away from the guard plate. A positioning post matched with the shaft hole is fixedly connected to the upper surface of the positioning block, and the positioning post is inserted into the shaft hole.

[0007] Further, a rubber sleeve is pasted in the shaft hole, and the rubber sleeve wraps the positioning post.

[0008] Further, a perforated lower connecting ring is fixedly connected to one end of the connecting pipe away from the support disc. A sealing ring is arranged above the lower connecting ring. An upper connecting ring is arranged above the sealing ring. The upper connecting ring is fixedly connected to the external thread pipe head. The upper connecting ring is fixedly connected to the lower connecting ring by a plurality of groups of screws and nuts in cooperation, and the screws penetrate through the sealing ring.

[0009] Further, a ring is arranged at the inner top of the rubber suction cup. A plurality of through holes aligned with the through holes are formed in one side surface of the ring, and the connecting screws pass through the through holes.

[0010] The beneficial effects of the utility model are as follows:

[0011] 1. Insert the positioning block processed with a threaded blind hole into the positioning groove on the support disc to realize the insertion connection between the positioning block and the support disc. Pass the connecting screw through the through hole and the small hole and screw it into the threaded blind hole to complete the assembly of the rubber suction cup and the support disc. When the threaded blind hole is damaged due to excessive torque, only replace the positioning block, without directly processing the threaded blind hole matched with the connecting screw on the support disc, avoiding replacing the whole support disc due to the damage of the threaded blind hole, and reducing the maintenance cost without replacing the whole support disc.

[0012] 2. Place the guard plate in the bayonet and insert the positioning post into the shaft hole on the connecting plate. Under the action of the rubber sleeve, the friction coefficient between the positioning post and the shaft hole is increased, and finally the guard plate is restricted in the bayonet. When using a wrench to clamp the support disc, the wrench does not directly contact the support disc under the block of the guard plate, playing a role in protecting the edge part of the bayonet. When the guard plate is damaged, only replace the guard plate.

[0013] 3. Connect the lower connecting ring and the upper connecting ring by the cooperation of screws and nuts to complete the assembly of the external thread pipe head and the connecting pipe. When the external thread pipe head is damaged, only replace the external thread pipe head. Description of the Drawings

[0014] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes and advantages of the utility model will become more obvious:

[0015] Figure 1 Schematic diagram of the structure of a suction cup of a hoisting machine according to the present utility model;

[0016] Figure 2 is Figure 1 enlarged view at A in

[0017] Figure 3 is Figure 1 enlarged view at B in

[0018] Figure 4 Assembly schematic diagram of connecting screws, ring and rubber suction cup in a suction cup of a hoisting machine according to the present utility model;

[0019] Figure 5 Stereogram of a rubber suction cup in a suction cup of a hoisting machine according to the present utility model;

[0020] Figure 6 Stereogram of a support plate in a suction cup of a hoisting machine according to the present utility model;

[0021] Figure 7 Another perspective stereogram of a support plate in a suction cup of a hoisting machine according to the present utility model;

[0022] Figure 8 Assembly schematic diagram of a positioning post and a positioning block in a suction cup of a hoisting machine according to the present utility model;

[0023] Figure 9 Assembly schematic diagram of a connecting plate and a guard plate in a suction cup of a hoisting machine according to the present utility model;

[0024] Figure 10 Assembly schematic diagram of a gasket and a positioning block in a suction cup of a hoisting machine according to the present utility model;

[0025] In the figure: 1 - rubber suction cup, 2 - support plate, 3 - connecting pipe, 4 - external thread pipe head, 5 - guard plate, 6 - upper connecting ring, 7 - sealing ring, 8 - lower connecting ring, 9 - connecting plate, 10 - rubber sleeve, 11 - positioning post, 12 - positioning block, 13 - connecting screw, 14 - arc plate, 15 - ring, 16 - convex head, 17 - bayonet, 18 - small hole, 19 - positioning groove, 20 - threaded blind hole, 21 - shaft hole, 22 - gasket, 23 - perforation. Specific embodiments

[0026] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] Please refer to Figure 1 and Figure 2, the present utility model provides a technical solution: a suction cup of a lifting machine, including a rubber suction cup 1. On the upper side of the outer surface of the rubber suction cup 1, there is a support plate 2. In the middle position of the upper surface of the support plate 2, a connecting pipe 3 passing through the support plate 2 is installed. The lower end of the connecting pipe 3 communicates with the internal space of the rubber suction cup 1. At one end of the connecting pipe 3 away from the support plate 2, a perforated lower connecting ring 8 is fixedly connected. Above the lower connecting ring 8, there is a sealing ring 7. Above the sealing ring 7, there is an upper connecting ring 6. The upper connecting ring 6 is fixedly connected to the external thread pipe head 4. The upper connecting ring 6 is fixedly connected to the lower connecting ring 8 by means of a combination of multiple groups of screws and nuts. The screws pass through the sealing ring 7. By using the combination of screws and nuts, the lower connecting ring 8 and the upper connecting ring 6 are connected, completing the assembly of the external thread pipe head 4 and the connecting pipe 3. When the external thread pipe head 4 is damaged, only the external thread pipe head 4 needs to be replaced.

[0028] Refer to Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 10 , on the upper surface of the support plate 2, a plurality of positioning grooves 19 are formed by downward depression. At the bottom of the positioning groove 19, small holes 18 are opened. On the inner top of the rubber suction cup 1, a plurality of through holes 23 aligned with the small holes 18 are evenly opened. In the positioning groove 19, a positioning block 12 is inserted. On the lower surface of the positioning block 12, a threaded blind hole 20 is opened. In the channel formed by the through hole 23 and the small hole 18, a connecting screw 13 is inserted. One end of the connecting screw 13 is threadedly connected in the threaded blind hole 20. Below the positioning block 12, there is a sealing gasket 22. The sealing gasket 22 is arranged in the positioning groove 19 and sleeved on the connecting screw 13. The sealing gasket 22 improves the sealing performance between the positioning block 12 and the support plate 2. The positioning block 12 processed with the threaded blind hole 20 is inserted into the positioning groove 19 on the support plate 2, realizing the plug-in connection between the positioning block 12 and the support plate 2. The connecting screw 13 passes through the through hole 23 and the small hole 18 and is screwed into the threaded blind hole 20, completing the assembly of the rubber suction cup 1 and the support plate 2. When the threaded blind hole 20 is damaged due to excessive torque, only the positioning block 12 needs to be replaced, without directly processing the threaded blind hole 20 cooperating with the connecting screw 13 on the support plate 2, avoiding replacing the entire support plate 2 due to the damage of the threaded blind hole 20. There is no need to replace the entire support plate 2, reducing the maintenance cost.

[0029] Refer to Figure 4 and Figure 5, a plurality of arc-shaped plates 14 are fixedly arranged at equal intervals in a circular shape at the inner top edge part of the rubber suction cup 1, and a plurality of convex heads 16 are fixedly arranged at equal intervals in a circular shape in the central area of the rubber suction cup 1. The thickness of the convex head 16 and the thickness of the arc-shaped plate 14 are both greater than the thickness of the head of the connecting screw 13. The designs of the arc-shaped plate 14 and the convex head 16 prevent the head of the connecting screw 13 from contacting the surface of the article. The arc-shaped plate 14, the convex head 16 and the rubber suction cup 1 are of an integrally formed structure. A ring 15 is arranged at the inner top of the rubber suction cup 1. A plurality of through holes aligned with the through holes 23 are arranged on one side surface of the ring 15. The connecting screw 13 passes through the through holes, and the ring 15 enables the head of the connecting screw 13 to be in balanced contact with the rubber suction cup 1.

[0030] Refer to Figure 1 , Figure 3 , Figure 6 , Figure 7 , Figure 8 and Figure 9 , two bayonets 17 for clamping a wrench are symmetrically machined on the circumferential side surface of the support disc 2. A protective plate 5 is arranged in the bayonet 17. The protective plate 5 is attached to the vertical surface of the bayonet 17. A connecting plate 9 in contact with the upper surface of the support disc 2 is fixedly connected to the middle position of the upper surface of the protective plate 5. A shaft hole 21 is arranged on one side of the upper surface of the connecting plate 9 away from the protective plate 5. A positioning column 11 matched with the shaft hole 21 is fixedly connected to the upper surface of the positioning block 12. The positioning column 11 is inserted into the shaft hole 21. A rubber sleeve 10 is pasted in the shaft hole 21. The rubber sleeve 10 wraps around the positioning column 11, so that the protective plate 5 is placed in the bayonet 17 and the positioning column 11 is inserted into the shaft hole 21 on the connecting plate 9. Under the action of the rubber sleeve 10, the friction coefficient between the positioning column 11 and the shaft hole 21 is increased, and finally the protective plate 5 is restricted in the bayonet 17. When the wrench clamps the support disc 2, the wrench does not directly contact the support disc 2 under the blocking of the protective plate 5, playing a role in protecting the edge part of the bayonet 17. When the protective plate 5 is damaged, the protective plate 5 can be replaced.

[0031] Although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A suction cup for a suction crane, comprising a rubber suction cup (1), characterized in that: On the upper side of the outer surface of the rubber suction cup (1), there is a support plate (2). In the middle position of the upper surface of the support plate (2), a connecting pipe (3) passing through the support plate (2) is installed. The lower end of the connecting pipe (3) communicates with the inner space of the rubber suction cup (1). The upper surface of the support plate (2) is recessed downward to form a plurality of positioning grooves (19). Small holes (18) are opened at the bottom of the positioning grooves (19). A plurality of through holes (23) aligned with the small holes (18) are evenly opened at the inner top of the rubber suction cup (1). Positioning blocks (12) are inserted into the positioning grooves (19). Threaded blind holes (20) are opened on the lower surface of the positioning blocks (12). Connecting screws (13) are inserted into the channels formed by the through holes (23) and the small holes (18). One end of the connecting screw (13) is threadedly connected to the threaded blind hole (20). A sealing gasket (22) is provided below the positioning block (12). The sealing gasket (22) is arranged in the positioning groove (19). The sealing gasket (22) is sleeved on the connecting screw (13).

2. The suction cup of a lifting machine according to claim 1, characterized in that: A plurality of arc-shaped plates (14) are fixedly arranged at equal intervals in a ring shape at the edge part of the inner top of the rubber suction cup (1). A plurality of convex heads (16) are fixedly arranged at equal intervals in a ring shape in the central area of the rubber suction cup (1). The thickness of the convex heads (16) and the thickness of the arc-shaped plates (14) are both greater than the thickness of the head of the connecting screw (13).

3. The suction cup of a lifting machine according to claim 1, characterized in that: Two clamping openings (17) for clamping a wrench are symmetrically machined on the circumferential side surface of the support plate (2). A protective plate (5) is arranged in the clamping openings (17). The protective plate (5) is in close contact with the vertical surface of the clamping opening (17). A connecting plate (9) in contact with the upper surface of the support plate (2) is fixedly connected to the middle position of the upper surface of the protective plate (5). A shaft hole (21) is opened on one side of the upper surface of the connecting plate (9) away from the protective plate (5). A positioning column (11) matched with the shaft hole (21) is fixedly connected to the upper surface of the positioning block (12). The positioning column (11) is inserted into the shaft hole (21).

4. The suction cup of a lifting machine according to claim 3, characterized in that: A rubber sleeve (10) is pasted in the shaft hole (21). The rubber sleeve (10) wraps around the positioning column (11).

5. The suction cup of a lifting machine according to claim 1, characterized in that: One end of the connecting pipe (3) away from the support plate (2) is fixedly connected to a perforated lower connecting ring (8). A sealing ring (7) is arranged above the lower connecting ring (8). An upper connecting ring (6) is arranged above the sealing ring (7). The upper connecting ring (6) is fixedly connected to an external threaded pipe head (4). The upper connecting ring (6) is fixedly connected to the lower connecting ring (8) by a plurality of sets of screws and nuts in a matching manner. The screws penetrate through the sealing ring (7).

6. The suction cup of a lifting machine according to claim 1, characterized in that: A ring (15) is arranged at the inner top of the rubber suction cup (1). A plurality of through holes aligned with the through holes (23) are opened on one side surface of the ring (15). The connecting screw (13) passes through the through holes.

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