Tank polishing device

Abstract

The invention provides a tank polishing device, and belongs to the technical field of tank processing, the tank polishing device comprises a base, and further comprises a polishing air bag, one end of the polishing air bag is closed, and the other end of the polishing air bag is rotatably connected to the base and is connected with an output port of an air transmission component; the multiple universal assemblies are arranged in the polishing air bag, synchronous rods connected with the polishing air bag are arranged on the universal assemblies, and the multiple universal assemblies are connected end to end through cross shafts; the multiple universal assemblies are arranged, and only the universal assemblies close to the corners can rotate, so that the device is in a hard and straight state when entering the straight pipe section, the multiple universal assemblies can turn in sequence when being located at the corners, and therefore the device can penetrate into the bent pipe more conveniently.

Description

Technical Field

[0001] The invention belongs to the technical field of can body processing, and in particular relates to a can body polishing device. Background Art

[0002] In the field of industrial production and storage, tanks are an important type of container equipment used in the storage, transportation and processing of liquids, gases and some solid substances. The design, manufacturing and material selection of tanks are not only directly related to their service life and safety, but also directly affect production efficiency, energy consumption and environmental protection. Tanks are generally connected to pipelines to transport the medium, and when processing the tanks, the inside of the pipelines on the tanks needs to be polished.

[0003] A Chinese patent with authorization announcement number CN113601339B discloses an exhaust elbow deburring processing device, including a frame; an elbow fixing device, which is arranged on the frame; a grinding device, which includes a sanding belt and two wire-carrying devices, the two wire-carrying devices are respectively arranged at the top and bottom of the frame, and the two ends of the sanding belt are respectively arranged on the two wire-carrying devices, and the wire-carrying devices are used to roll up or release the sanding belt; two driving devices, which are arranged on the frame and are used to drive the wire-carrying devices to rotate; an air bag, which is placed in the elbow, and the air bag is provided with an air inlet pipe and an air outlet pipe, the air inlet pipe is connected to an external air supply device, and the air outlet pipe is connected to an external air extraction device; a control device, which is arranged on the frame, and the control device is used to indirectly control the operation of the two driving devices, and at the same time indirectly control the operation of the external air supply device and the external air extraction device.

[0004] The above technical solution can automatically deburr the inner wall of the bent pipe, and deburr the inside of the bent pipe evenly without any unprocessed situation, and the effect is good.

[0005] However, considering that both the airbag and the abrasive belt are flexible, it is not easy for the airbag and the abrasive belt to penetrate into the interior of the bent pipe. In addition, the current technical solution relies on pulling the abrasive belt to contact and grind the interior of the bent pipe, especially when processing complex areas such as corner A or corner B of the bent pipe (such as Fig.11 As shown in the figure, the problem becomes apparent. In this scenario, the sanding belt easily exerts a squeezing effect on the airbag during the force application process, and the compressibility of the gas in the airbag causes it to deform when under pressure. This deformation not only weakens the effective contact between the sanding belt and the corner of the elbow (such as corner A or corner B), but may also cause a significant reduction in friction. In some cases, the sanding belt completely loses contact with the grinding area, which greatly affects the grinding effect of the corner of the elbow, making the grinding of this area particularly difficult. In addition, the above technical solution makes it difficult to weld pipes welded to the tank body. Summary of the invention

[0006] The object of the present invention is to provide a tank body polishing device, aiming to solve the problem that the polishing structure in the prior art is difficult to penetrate into the curved pipe and cannot effectively polish the corners.

[0007] To achieve the above object, the present invention provides the following technical solution: a tank polishing device, comprising: a base, and also comprising: A polishing airbag, one end of which is closed, and the other end of which is rotatably connected to the base and connected to the output port of the air delivery component; Multiple universal joints are arranged inside the grinding airbag, and a synchronization rod connected to the grinding airbag is arranged on the universal joint. The multiple universal joints are connected end to end through a cross shaft. The universal joint includes a shell, a limiting structure and an abutment. The limiting structure and the abutment are arranged on the shell. The limiting structure can limit the relative rotation between the head and tail ends of the universal joint and the cross shaft. When the limiting structure limits the universal joint, the multiple universal joints are arranged on the same axis, and the abutment can release the limitation of the limiting structure on the universal joint.

[0008] The beneficial effects of the present invention are as follows: by setting up multiple universal joints, and making the multiple universal joints be on the same axis before contacting the corner of the curved pipe, when the topmost universal joint is against the corner of the curved pipe, the limiting structure will cancel the limiting of the topmost universal joint, so that the topmost universal joint can rotate in the direction of the corner, and then through the rotation of the topmost universal joint, the adjacent limiting structure can be driven to cancel the limiting of another universal joint, so that the other universal joint can rotate at the corner, so that the device is in a rigid state between the corners, and can turn in turn after contacting the corner, so that the device is easier to penetrate into the curved pipe, and the inner wall of the pipe can be evenly polished by the rotation of the polishing airbag, which can effectively avoid the situation where it cannot be polished, thereby improving the polishing effect.

[0009] A further technical solution of the present invention is that the limiting structure includes a limiting groove arranged on the cross shaft, and the shell is respectively provided with a first limiting component and a second limiting component adapted to the limiting grooves in the two cross shafts at the head and tail ends, the first limiting component is connected to the abutment component, the first limiting component and the second limiting component are connected by a first elastic component, and a second elastic component capable of pushing the first limiting component and the second limiting component to engage with the limiting groove is arranged in the shell.

[0010] The effect is that the rotation of the shell can be limited by providing the first limiting component and the second limiting component and making the first limiting component and the second limiting component cooperate with the limiting groove.

[0011] A further technical solution of the present invention is that the first limiting component includes a sliding plate, the sliding plate slides inside the shell, the sliding plate is provided with a first clamping block, and the second elastic member can make the first clamping block clamped into the limiting groove and limit the cross axis.

[0012] The effect is that the sliding of the sliding plate can drive the movement of the first clamping block, so that the first clamping block can be used in conjunction with the limiting groove to limit the rotation of the cross shaft at one end.

[0013] A further technical solution of the present invention is that the second limiting component includes a connecting column, one end of which is connected to the sliding plate through a first elastic member, and a second clamping block is provided on the connecting column. The first elastic member can enable the second clamping block to be clamped into the limiting groove and limit the cross axis.

[0014] The effect is that the sliding of the sliding plate can drive the movement of the connecting column. When the connecting column moves, the second clamping block can be driven to clamp into the limiting groove of the cross shaft at the other end, thereby limiting the rotation of the cross shaft.

[0015] A further technical solution of the present invention is that the synchronization rod is hinged on the shell, and a shift lever is provided on the first limiting component, and the shift lever is against one side of the synchronization rod. The swing of the synchronization rod can disengage the first limiting component and the second limiting component from the limiting groove through the shift lever.

[0016] The effect is that after the first limiting component and the second limiting component are driven to disengage from the limiting groove by the synchronous rod, when the universal joint assembly is driven to rotate, the universal joint assembly can drive the grinding airbag to grind inside the bent pipe.

[0017] A further technical solution of the present invention is that the polishing airbag includes a bag body and a polishing strip, and the polishing strip is arranged on the outer surface of the bag body and is in a protruding state on the bag body.

[0018] A further technical solution of the present invention is that when the angle between two adjacent universal joints changes, the limiting of the adjacent universal joints can be released.

[0019] A further technical solution of the present invention is that two mounting ears are provided at both ends of the shell, wherein the angle between the mounting ear at one end and the mounting ear at the other end is 90 degrees, and the cross shaft is installed on the mounting ears.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up multiple universal assemblies and allowing only the universal assemblies near the corners to rotate, the device is in a rigid state when entering the straight pipe section. When at the corner, multiple universal assemblies can turn in turn, making it easier for the device to penetrate into the curved pipe.

[0021] 2. By inflating the grinding airbag, the universal assembly then drives the grinding airbag to rotate, so that the inner wall of the bent pipe can be evenly ground, avoiding the situation where there is no part that can be ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the present invention; Figure 2 It is a schematic diagram of the installation structure of the universal assembly in a specific embodiment of the present invention; Figure 3 It is a schematic diagram of the assembly structure of the universal joint assembly in a specific embodiment of the present invention; Figure 4 It is a structural schematic diagram of the first limiting component in a specific embodiment of the present invention; Figure 5 It is a schematic diagram of the installation structure of the second limiting component in a specific embodiment of the present invention; Figure 6 It is an axonometric cross-sectional view of a universal joint assembly in a specific embodiment of the present invention; Figure 7 It is a schematic diagram of the structure of a cross shaft in a specific embodiment of the present invention; Figure 8 It is a schematic diagram of the grinding state of the grinding airbag in a specific embodiment of the present invention; Fig. 9 for Figure 5 A schematic diagram of the structure enlargement at the center A; Fig.10 for Figure 5 A schematic diagram of the structure enlarged at B in the middle; Fig.11 It is a structural schematic diagram of the prior art.

[0023] In the figure: 1. base; 2. grinding airbag; 21. bag body; 22. grinding strip; 3. air delivery component; 4. universal assembly; 5. cross shaft; 51. limit groove; 6. limit structure; 61. first limit component; 611. sliding plate; 612. first clamping block; 613. gear lever; 62. second limit component; 621. connecting column; 622. second clamping block; 63. first elastic member; 64. second elastic member; 7. abutment member; 8. synchronization rod; 9. shell; 91. mounting ear. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 10 , the present invention provides the following technical solutions: a tank polishing device, comprising: a base 1, further comprising: a polishing airbag 2 and a plurality of universal components 4; Among them, one end of the grinding airbag 2 is closed, and when the grinding airbag 2 is in an air-filled state, the grinding airbag 2 is cylindrical, and the other end is connected to the base 1 through a rotating disk, and the rotating disk can be driven to rotate by a driving member. In this embodiment, a motor (not shown in the figure) drives a transmission component to drive the rotating disk to rotate. The transmission component can be a gear drive, a belt drive or a chain drive, etc. When the rotating disk rotates, it can drive the grinding airbag 2 to rotate, and an air delivery component 3 is installed on the base 1. When the air delivery component 3 is working, it can fill the inside of the grinding airbag 2 with gas, and expand the grinding airbag 2, so that the outer surface of the grinding airbag 2 contacts the inner wall of the curved pipe. When the curved pipe needs to be polished, the rotation of the grinding airbag 2 can cause relative movement between the grinding airbag 2 and the curved pipe, so that the inner wall of the curved pipe can be polished, and the inflation of the grinding airbag 2 can fill the inner wall of the curved pipe, so as to avoid the occurrence of grinding dead corners; See also Figure 2 , multiple universal assemblies 4 are arranged inside the polishing airbag 2, and a synchronization rod 8 connected to the polishing airbag 2 is arranged on the universal assemblies 4, so that the universal assemblies 4 can rotate synchronously with the polishing airbag 2 when rotating, thereby avoiding the polishing airbag 2 itself from twisting due to the friction between the polishing airbag 2 and the bent pipe when the polishing airbag 2 rotates. In order to realize the universal rotation of the universal assemblies 4, the multiple universal assemblies 4 are connected end to end through a cross shaft 5, and the cross shaft 5 can rotate relative to the universal assemblies 4; See also Figure 2-Figure 6The universal assembly 4 includes a housing 9, a limiting structure 6 and an abutment member 7. The housing 9 is cylindrical and has two mounting ears 91 integrally formed at both ends. The two mounting ears 91 are arranged in a mirror image. The cross shaft 5 is mounted on the mounting ears 91. The angle between the mounting ears 91 at one end and the mounting ears 91 at the other end is set at 90 degrees. That is to say, the mirror plane between the two mounting ears 91 at one end intersects with the mirror plane between the two mounting ears 91 at the other end and is arranged at 90 degrees. The limiting structure 6 and the abutment 7 are arranged on the shell 9. The limiting structure 6 can limit the relative rotation between the head and tail ends of the universal joint 4 and the cross shaft 5. When the limiting structure 6 limits the universal joint 4, multiple universal joints 4 are arranged on the same axis, and the abutment 7 can release the limitation of the limiting structure 6 on the universal joint 4.

[0026] When in use, multiple universal assemblies 4 will first be restricted to the same axis by the limiting structure 6, and then the universal assemblies 4 will enter the interior of the bent pipe so that the corners of the bent pipe will abut against the abutment 7, and the limiting structure 6 on the universal assemblies 4 will be released in turn, thereby facilitating the device to penetrate into the interior of the bent pipe.

[0027] The limiting structure 6 includes a limiting groove 51 arranged on the cross shaft 5. Figure 7 As shown, the limiting groove 51 is composed of a C-shaped ring sleeved on the cross shaft 5, and the C-shaped ring can be fixed on the cross shaft 5 by a welding process, and the limiting groove 51 is formed by the two ends of the C-shaped ring. The housing 9 is also provided with a first limiting component 61 and a second limiting component 62. The first limiting component 61 and the second limiting component 62 are respectively adapted to the limiting grooves 51 in the two cross shafts 5 at the head and tail ends. The first limiting component 61 is connected to the abutment 7, so that the abutment 7 can directly release the limiting of the first limiting component 61 on the cross shaft 5. The first limiting component 61 and the second limiting component 62 are respectively adapted to the limiting grooves 51 in the two cross shafts 5 at the head and tail ends. The first limiting component 61 is connected to the abutment 7, so that the abutment 7 can directly release the limiting of the first limiting component 61 on the cross shaft 5. The two limiting components 62 are connected by a first elastic component 63. When the first limiting component 61 moves, the second limiting component 62 can be driven to move by the first elastic component 63, so that the second limiting component 62 can release the limitation of the cross shaft 5. A second elastic component 64 is arranged in the shell 9, which can push the first limiting component 61 and the second limiting component 62 to engage with the limiting groove 51, so that the first limiting component 61 and the second limiting component 62 are in a state of limiting the cross shaft 5 in a natural state. At this time, multiple universal joint assemblies 4 are in a coaxial state.

[0028] During use, when the abutment member 7 abuts against the corner of the bent pipe, the abutment member 7 is pushed to move in the direction of the shell 9, which can directly drive the first limiting component 61 to disengage from the limiting groove 51, thereby releasing the limiting between one end of the shell 9 and the cross shaft 5. When the first limiting component 61 moves, the second limiting component 62 can be driven to move through the first elastic component 63, and the movement of the second limiting component 62 can release the limiting between the other end of the shell 9 and the cross shaft 5, thereby facilitating the swinging of the universal joint assembly 4.

[0029] See also Figure 2-Figure 6 The first limiting component 61 includes a sliding plate 611, which slides inside the shell 9. Of course, a chamber for the sliding plate 611 to slide is also provided inside the shell 9. A first clamping block 612 is provided on the sliding plate 611 through a column. The first clamping block 612 can slide up and down in the mounting ear 91. The second elastic member 64 can enable the first clamping block 612 to be clamped into the limiting groove 51 and limit the cross shaft 5. The second elastic member 64 is a compression spring, one end of which is fixed to the bottom of the shell 9, and the other end is connected to the sliding plate 611. When the second elastic member 64 releases energy, the first clamping block 612 can be clamped into the inside of the limiting groove 51.

[0030] The second limiting component 62 includes a connecting column 621, which passes through the sliding plate 611 and is connected to the first elastic member 63. The first elastic member 63 is a tension spring, one end of which is fixed on the sliding plate 611, and the other end is fixed to one end of the connecting column 621. A second clamping block 622 is provided on the end of the connecting column 621 away from the first elastic member 63. The second clamping block 622 can slide inside the mounting ear 91. When the first limiting component 61 releases the limitation on the cross shaft 5, the first elastic member 63 can pull the connecting column 621 to move, so that the second clamping block 622 on the connecting column 621 can release the limitation on the cross shaft 5.

[0031] See also Figure 2 and Figure 4 The synchronization rod 8 is hinged on the shell 9, and the other end slides on the inner wall of the grinding airbag 2 along the axial direction of the grinding airbag 2. A slide groove (not shown in the figure) can be set on the inner wall of the grinding airbag 2, and one end of the synchronization rod 8 can slide a certain distance inside the slide groove. A gear rod 613 is set on the first limiting component 61, and the gear rod 613 can move with the first limiting component 61. The gear rod 613 is against one side of the synchronization rod 8. The swing of the synchronization rod 8 can disengage the first limiting component 61 and the second limiting component 62 from the limiting groove 51 through the gear rod 613.

[0032] When in use, gas is filled into the polishing airbag 2 to increase the diameter of the polishing airbag 2, thereby driving one end of the synchronization rod 8 to swing. The synchronization rod 8 and the gear rod 613 are abutted against each other, thereby preventing the first limiting component 61 and the second limiting component 62 from being stuck in the limiting groove 51 and affecting the rotation of multiple universal assemblies 4, so that the polishing airbag 2 can achieve the effect of polishing the bent pipe.

[0033] Specifically, the polishing airbag 2 includes a bladder body 21 and a polishing strip 22. The polishing strip 22 is arranged on the surface of the bladder body 21 and is in a protruding state on the bladder body 21. The polishing strip 22 and the synchronization rod 8 are arranged in a staggered manner. When the polishing airbag 2 is filled with gas, the bladder body 21 at the connection position of the synchronization rod 8 is in a concave state (such as Figure 8 As shown), the capsule 21 is prevented from directly rubbing against the inside of the pipe, causing wear of the capsule 21. Since the synchronization rod 8 and the grinding strip 22 are staggered, the grinding strip 22 can contact the inner wall of the bent pipe, thereby playing a grinding role.

[0034] Specifically, when the angle between two adjacent universal joints 4 changes, the limit of the adjacent universal joints 4 can be released. When the first universal joint 4 swings, it can abut against the adjacent abutment member 7, thereby releasing the limit of the adjacent universal joint 4 and allowing the universal joint 4 to swing as well.

Claims

1. A tank polishing device, comprising: The base (1) is characterized by further comprising: A polishing airbag (2), wherein one end of the polishing airbag (2) is closed, and the other end is rotatably connected to the base (1) and connected to the output port of the air delivery component (3); A plurality of universal assemblies (4), wherein the universal assemblies (4) are arranged inside a grinding airbag (2), wherein a synchronization rod (8) connected to the grinding airbag (2) is arranged on the universal assemblies (4), wherein the plurality of universal assemblies (4) are connected end to end via a cross shaft (5), wherein the universal assemblies (4) comprise a housing (9), a limiting structure (6) and an abutment member (7), wherein the limiting structure (6) and the abutment member (7) are arranged on the housing (9), wherein the limiting structure (6) can limit the relative rotation between the end portions of the universal assemblies (4) and the cross shaft (5), and when the limiting structure (6) limits the universal assemblies (4), the plurality of universal assemblies (4) are arranged on the same axis, and the abutment member (7) can release the limit imposed by the limiting structure (6) on the universal assemblies (4).

2. A can body polishing device according to claim 1, characterized in that: The limiting structure (6) comprises a limiting groove (51) arranged on the cross shaft (5); the housing (9) is provided with a first limiting component (61) and a second limiting component (62) respectively adapted to the limiting grooves (51) in the two cross shafts (5) at the head and tail ends; the first limiting component (61) is connected to the abutment component (7); the first limiting component (61) and the second limiting component (62) are connected via a first elastic component (63); and a second elastic component (64) capable of pushing the first limiting component (61) and the second limiting component (62) to engage with the limiting groove (51) is provided in the housing (9).

3. A can body polishing device according to claim 2, characterized in that: The first limiting component (61) comprises a sliding plate (611) which slides inside the housing (9). A first clamping block (612) is provided on the sliding plate (611). The second elastic member (64) can cause the first clamping block (612) to be clamped into the limiting groove (51) and limit the cross shaft (5).

4. A can body polishing device according to claim 3, characterized in that: The second limiting component (62) comprises a connecting column (621), one end of which is connected to the sliding plate (611) via a first elastic member (63), a second clamping block (622) is provided on the connecting column (621), and the first elastic member (63) can enable the second clamping block (622) to be clamped into the limiting groove (51) and limit the cross shaft (5).

5. A can body polishing device according to claim 2, characterized in that: The synchronization rod (8) is hinged on the housing (9); a shift rod (613) is provided on the first limiting component (61); the shift rod (613) abuts against one side of the synchronization rod (8); the synchronization rod (8) swings to disengage the first limiting component (61) and the second limiting component (62) from the limiting groove (51) via the shift rod (613).

6. A can body polishing device according to claim 5, characterized in that: The grinding airbag (2) comprises a bag body (21) and grinding strips (22); the grinding strips (22) are arranged on the outer surface of the bag body (21) and are in a protruding state on the bag body (21); the grinding strips (22) and the synchronization rods (8) are arranged in a staggered manner.

7. A can body polishing device according to claim 1, characterized in that: When the angle between two adjacent universal assemblies (4) changes, the limiting of the adjacent universal assemblies (4) can be released.

8. A can body polishing device according to claim 1, characterized in that: Two mounting ears (91) are provided at both ends of the housing (9), wherein the angle between the mounting ear (91) at one end and the mounting ear (91) at the other end is 90 degrees, and the cross shaft (5) is mounted on the mounting ears (91).

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