Rotatable self-locking type pickling tool clamp for large bearing parts
By designing a rotatable self-locking pickling fixture for large bearing parts, the problem of labor-intensive handling and safety hazards in the pickling process of large bearing parts in the existing technology has been solved. It enables flexible rotation and thorough cleaning of bearing parts, improving production efficiency and safety.
Patent Information
- Application Number
- CN202520152374.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-22
AI Technical Summary
The existing technology suffers from low production efficiency, poor safety, and complex operation, failing to meet production efficiency requirements. The technical problems in the existing technology are: the pickling process of large bearing parts in the existing technology requires manual handling, which is physically demanding and poses safety hazards, and improper control of pickling time can lead to product quality problems.
A rotatable self-locking pickling fixture for large bearing parts was designed, including a stepped shaft, a positioning bearing, a locking nut, and a gripping frame. The relative rotation between the gripping frame and the stepped shaft is achieved through the positioning bearing, forming a self-locking structure, which enables flexible rotation and safe lifting of the bearing parts during the lifting process.
It improved production efficiency, reduced operational complexity and safety hazards, enabled flexible rotation and thorough cleaning of bearing parts, and reduced costs.
Smart Images
Figure CN223688460U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a pickling tool clamp, especially disclose a rotatable self-locking type pickling tool clamp for large bearing parts. BACKGROUND
[0002] In the bearing manufacturing industry, the size range of bearing is: large bearing is nominal outer diameter size range is 200~430mm, super large bearing nominal outer diameter size range is 440mm above. In the processing of large bearing parts, pickling is indispensable. The quality control of this process is directly related to the lifeblood of product quality, and the pickling process includes: degreasing tank, cleaning tank, flowing cold water tank, pickling tank, first brightening tank, flowing cold water tank, second brightening tank, flowing cold water tank, neutralization tank, flowing cold water tank and antirust tank, a total of 11 process flows, each process needs to be lifted and then safely put into the tank.
[0003] The bearing manufacturing industry currently uses manpower to control the pickling of large bearing parts, first standing the bearing parts, and then using ropes or iron wires as lifting tools. Especially when pickling large bearing parts, it is particularly labor-intensive and low in production efficiency. In addition, the iron wire is corroded by acid liquid during use, causing iron wire fracture and serious safety hazards such as acid liquid splashing in the pickling tank. At the same time, each process has a certain time control, and if the pickling time control is not in place, product quality inspection will be missed, causing unqualified products to flow and other serious quality problems. SUMMARY
[0004] The utility model aims at overcoming the defects in the prior art, and provides a rotatable self-locking type pickling tool clamp for large bearing parts, which is convenient to operate, low in cost, improves safety and production efficiency.
[0005] The utility model is implemented as follows: a rotatable self-locking type pickling tool clamp for large bearing parts, comprising a stepped shaft, a positioning bearing, a locking nut and a grabbing frame; the stepped shaft comprises a shaft body, the lower part of the shaft body is sequentially provided with a locking section, a bearing mounting section and a bearing limiting section from top to bottom, the bearing limiting section extends outward relative to the bearing mounting section and forms a step, the locking nut is sleeved on the locking section, the positioning bearing is sleeved on the bearing mounting section, the bottom of the positioning bearing contacts the upper end face of the step of the bearing limiting section;
[0006] The grabbing frame comprises a stop block, a limiting ring and several evenly distributed clamps around the limiting ring, the limiting ring is fixed on the inner side of the upper part of the clamp, the inner side of the clamp is provided with an inner groove with an open lower end, the outer side of the clamp is provided with an outer groove with an open lower end, the stop block comprises a horizontal long rod and a vertical short rod connected in an "L" shape, the horizontal long rod passes through the outer groove and the inner groove and is rotatably connected to the lower end of the clamp by a pin shaft or a bolt, the vertical short rod is located on the inner side of the clamp, when the horizontal long rod is rotated to a vertical position, the outer end of the horizontal long rod is located in the outer groove; when the horizontal long rod is rotated to a horizontal transverse position, the outer end of the horizontal long rod extends out of the outer groove and is located outside the outer side of the clamp, and the upper end of the vertical short rod is located above the inner groove and closely abuts the inner side of the clamp.
[0007] The inner side of the limiting ring is provided with a placement groove for placing the positioning bearing, the top of the placement groove is provided with an annular stop edge with an inner diameter smaller than the outer diameter of the positioning bearing; the upper end of the stepped shaft passes through the limiting ring from bottom to top, and the locking nut is located above the limiting ring.
[0008] The outer diameter of the bearing limiting section is smaller than or equal to the outer diameter of the inner ring of the positioning bearing.
[0009] The outer diameter of the shaft body is smaller than the outer diameter of the locking section, and the outer diameter of the locking section is smaller than or equal to the outer diameter of the bearing mounting section.
[0010] The number of clamps is 3-6.
[0011] The clamp is a square tube or the lower end of the clamp is hollow.
[0012] The upper part of one end of the horizontal long rod located on the outer side of the clamp has an isosceles trapezoidal cross-sectional shape with a smaller upper base and a larger lower base, and the lower part of one end of the horizontal long rod located on the outer side of the clamp has a rectangular or rounded rectangular cross-sectional shape.
[0013] The upper end of the shaft body of the stepped shaft is provided with a lifting ring connecting hole.
[0014] When the stop block of the grabbing frame is not subjected to external force, the horizontal long rod is in a horizontal transverse position.
[0015] The positioning bearing is an acid-proof rolling bearing.
[0016] The locking nut is provided with 2-6 notches around it
[0017] The utility model discloses beneficial effect is: the locating bearing is connected with the snatch frame through the stepped shaft and locking nut, realizes the relative rotation between snatch frame and stepped shaft through locating bearing, makes bearing parts in the hoisting process stepped shaft can be self -adaptation rotation according to the change of hoisting stress direction, thereby more flexible smoothly complete hoisting action, the cross long pole of snatch frame stopper rotates to horizontal horizontal position, the outer end of cross long pole is out of the outer groove and is located the outside of snatch, and the outer end of cross long pole that is out of the outer groove forms hoisting bearing end, the upper end of vertical short pole is located above the inner groove and is close to the inner side of snatch, forms self -locking structure, thereby more safely hoist action.
[0018] The utility model solves the security risk, the problem of physical exhaustion, prevents acid liquid splash in the prior art in use, the utility model has simple structure, good stability, uses nimble and convenient, greatly reduce cost simultaneously, improve production efficiency. When using, can according to the size of bearing parts, only need to replace the stopper of different size to realize the change of different size parts. In the cleaning process, rotation can also be realized under the action of flowing water pressure, making cleaning more thorough. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is the schematic diagram of the explosion structure of the utility model.
[0020] Figure 2 It is the schematic diagram of the connecting structure of the utility model and bearing parts.
[0021] Figure 3 It is the structural schematic diagram of the stepped shaft of the utility model.
[0022] Figure 4 It is the structural schematic diagram of the snatch frame of the utility model.
[0023] Figure 5 It is the structural schematic diagram of the stopper of the utility model.
[0024] Figure 6 It is the structural schematic diagram of the cross long pole of the utility model when rotating to vertical position.
[0025] Wherein: 1, stepped shaft, 2, locating bearing, 3, locking nut, 4, snatch frame, 5, shaft body, 6, locking section, 7, bearing installation section, 8, bearing limiting section, 9, inner ring, 10, recess, 11, stopper, 12, limiting ring, 13, snatch, 14, inner groove, 15, outer groove, 16, cross long pole, 17, vertical short pole, 18, bolt, 19, placing recess, 20, annular stopper, 21, inclined plane, 22, hoisting ring connecting hole, 23, step, 24, bearing parts. DETAILED DESCRIPTION
[0026] According to Figures 1-6 The utility model discloses a rotatable self-locking pickling tool clamp for large bearing parts, which comprises a stepped shaft 1, a locating bearing 2, a locking nut 3 and a grabbing frame 4.
[0027] The stepped shaft 1 comprises a shaft body 5, wherein a locking section 6, a bearing mounting section 7 and a bearing limiting section 8 are sequentially arranged from top to bottom at the lower part of the shaft body 5, the outer diameter of the shaft body 5 is smaller than that of the locking section 6, the outer diameter of the locking section 6 is smaller than or equal to that of the bearing mounting section 7, the outer diameter of the bearing mounting section 7 is smaller than that of the bearing limiting section 8, i.e., the bearing limiting section 8 extends outward relative to the bearing mounting section 7 and forms a step 23, and the outer diameter of the bearing limiting section 8 is smaller than or equal to the outer diameter of an inner ring 9 of the locating bearing 2 and greater than the inner diameter of the inner ring 9 of the locating bearing 2. A lifting ring connecting hole 22 is arranged at the upper end of the shaft body 5 of the stepped shaft 1. The locating bearing 2 is preferably an acid-proof rolling bearing.
[0028] The locking nut 3 is sleeved on the locking section 6 and threadedly connected with the locking section 6, 2-6 notches 10 are arranged around the locking nut 3, and the notches 10 facilitate the installation and removal of the locking nut 3. The locating bearing 2 is sleeved on the bearing mounting section 7, and the bottom of the locating bearing 2 contacts the upper end face of the step 23 of the bearing limiting section 8.
[0029] The grabbing frame 4 comprises a stopper 11, a limiting ring 12 and several evenly distributed grabbing clamps 13 around the limiting ring 12, the number of the grabbing clamps 13 is preferably 3-6, usually 3. The grabbing clamps 13 are square tubes or the lower ends of the grabbing clamps 13 are hollow. The limiting ring 12 is fixed on the inner side of the upper part of the grabbing clamps 13, the inner side of the lower end of the grabbing clamps 13 is provided with an inner groove 14 with an open lower end, and the outer side of the lower end of the grabbing clamps 13 is provided with an outer groove 15 with an open lower end. The stopper 11 comprises a horizontally long rod 16 and a vertically short rod 17 connected in an "L" shape, the horizontally long rod 16 is transversely through the outer groove 15 and the inner groove 14 when in a horizontal state and is rotatably connected to the lower end of the grabbing clamps 13 through a pin shaft or a bolt 18, and the horizontally long rod 16 can freely rotate along the pin shaft or the bolt 18. The vertically short rod 17 is located on the inner side of the grabbing clamps 13, when the horizontally long rod 16 is rotated to a vertical position, the outer end of the horizontally long rod 16 is located in the outer groove 15, and the vertically short rod 17 is located below the lower end of the grabbing clamps 13, at this time, preferably: the length of the vertically short rod 17 is not more than the inner side of the grabbing clamps 13, or the length of the vertically short rod 17 beyond the inner side of the grabbing clamps 13 is less than the distance between the inner side of the vertically short rod 17 and the inner side of the grabbing clamps 13 when the horizontally long rod 16 is rotated to a horizontal state; when the horizontally long rod 16 is rotated to a horizontal transverse position, the outer end of the horizontally long rod 16 extends out of the outer groove 15 and is located on the outer side of the grabbing clamps 13, and the upper end of the vertically short rod 17 is located above the inner groove 14 and closely abuts the inner side of the grabbing clamps 13. When the stopper 11 of the grabbing frame 4 is not subjected to external force, the horizontally long rod 16 is in a horizontal transverse position.
[0030] The inner side of the limiting ring 12 is provided with a placing groove 19 for placing the positioning bearing 2, and the top of the placing groove 19 is provided with an annular stopper 20 with an inner diameter smaller than the outer diameter of the positioning bearing 2; the upper end of the stepped shaft 1 passes through the limiting ring 12 from bottom to top, and the locking nut 3 is located above the limiting ring 12, and the inner diameter of the annular stopper 20 of the limiting ring 12 is smaller than the outer diameter of the locking nut 3. The locking nut 3 is connected with the locking section 6 to limit the downward movement of the stepped shaft 1 relative to the grabbing frame 4. The positioning bearing 2 is located in the placing groove 19 during use of the utility model.
[0031] The upper part of one end of the horizontally long rod 16 located on the outer side of the grabbing clamps 13 is in the shape of an isosceles trapezoid with a smaller upper base and a larger lower base, that is, the horizontally long rod 16 is provided with two symmetrical inclined surfaces 21 on the front and back sides of the upper end surface of one end of the horizontally long rod 16 which bears the hoisting bearing part 24 during hoisting, and the lower part of one end of the horizontally long rod 16 located on the outer side of the grabbing clamps 13 is in the shape of a rectangle or a rounded rectangle.
[0032] The utility model discloses beneficial effect is: through the positioning bearing 2 of the ladder shaft 1 and locking nut 3 is restricted in the grab frame 4, through the positioning bearing 2 realizes the relative rotation between the grab frame 4 with the ladder shaft 1, makes bearing part 24 in the lifting process ladder shaft 1 can be according to the change of lifting stress direction self -adaptation rotation, to more flexible smoothly complete the lifting action, the horizontal bar 16 of grab frame 4 baffle 11 rotates to horizontal transverse position, the outer end of horizontal bar 16 is stretched out the outer groove 15 and is located the outside of the grab 13, and the outer end of horizontal bar 16 that stretches out the outer groove 15 forms the lifting load end, the upper end of vertical short pole 17 is located above the inner groove 14 and is close to the inner side surface of grab 13, forms the self -locking structure, to more safely carry out the lifting action.
Claims
1. A large bearing part rotatable self-locking pickling tool clamp, characterized by: The device comprises a stepped shaft, a locating bearing, a locking nut and a grabbing frame; the stepped shaft comprises a shaft body, the lower part of the shaft body is sequentially provided with a locking section, a bearing mounting section and a bearing limiting section from top to bottom, the bearing limiting section extends outward relative to the bearing mounting section and forms a step, the locking nut is sleeved on the locking section, the locating bearing is sleeved on the bearing mounting section, the bottom of the locating bearing contacts the upper end face of the step of the bearing limiting section; The grabbing frame comprises a stop block, a limiting ring and a plurality of grabbing clamps which are uniformly distributed around the limiting ring, the limiting ring is fixed to the inner side of the upper part of the grabbing clamps, the inner side of the grabbing clamps is provided with an inner groove with an open lower end, the outer side of the grabbing clamps is provided with an outer groove with an open lower end, the stop block comprises a horizontal long rod and a vertical short rod which are connected in an "L" shape, the horizontal long rod passes through the outer groove and the inner groove and is rotatably connected to the lower end of the grabbing clamps by a pin shaft or a bolt, the vertical short rod is located on the inner side of the grabbing clamps, when the horizontal long rod is rotated to a vertical position, the outer end of the horizontal long rod is located in the outer groove; when the horizontal long rod is rotated to a horizontal transverse position, the outer end of the horizontal long rod extends out of the outer groove and is located on the outer side of the grabbing clamps, and the upper end of the vertical short rod is located above the inner groove and closely contacts the inner side of the grabbing clamps; The inner side of the limiting ring is provided with a placing groove for placing the locating bearing, the top of the placing groove is provided with an annular stop rib with an inner diameter smaller than the outer diameter of the locating bearing; the upper end of the stepped shaft passes through the limiting ring from bottom to top, and the locking nut is located above the limiting ring.
2. The large bearing part rotatable self-locking pickling tool clamp according to claim 1, characterized in that: The outer diameter of the bearing limiting section is smaller than or equal to the outer diameter of the inner ring of the locating bearing.
3. A large bearing part rotatable self-locking pickling tool clamp according to claim 1, characterized in that: The outer diameter of the shaft body is smaller than the outer diameter of the locking section, and the outer diameter of the locking section is smaller than or equal to the outer diameter of the bearing mounting section.
4. A large bearing part rotatable self-locking pickling tool clamp according to claim 1, characterized in that: The number of the grabbing clamps is 3-6.
5. A large bearing part rotatable self-locking pickling tool clamp according to claim 1 or 4, characterized in that: The grabbing clamps are square tubes or the lower ends of the grabbing clamps are hollow.
6. A large bearing part rotatable self-locking pickling tool clamp according to claim 1, characterized in that: The upper part of one end of the horizontal long rod located on the outer side of the grabbing clamps has a trapezoidal cross section with a lower base larger than an upper base, and the lower part of one end of the horizontal long rod located on the outer side of the grabbing clamps has a rectangular or rounded rectangular cross section.
7. A large bearing part rotatable self-locking pickling tool clamp according to claim 1, characterized in that: The upper end of the shaft body of the stepped shaft is provided with a lifting ring connecting hole.
8. A large bearing part rotatable self-locking pickling tool clamp according to claim 1, characterized in that: When the stop block of the grabbing frame is not subjected to external force, the horizontal long rod is in a horizontal transverse position.
9. A large bearing part rotatable self-locking pickling tool clamp according to claim 1, characterized in that: The locating bearing is an acid-proof rolling bearing.
10. A large bearing part rotatable self-locking pickling tool clamp according to claim 1, characterized in that: The locking nut is provided with 2-6 notches around.