Adjustable grinding wheel hoist

Abstract

The application discloses a kind of adjustable grinding wheel hangers, belong to hoisting field, including lifting ring, guide column, pull rod, retainer, dog and support beam;The lifting ring is fixedly connected with the upper end of guide column;The support beam includes crossbeam and vertical rod;The vertical rod has the cavity that is compatible with the lower end of the guide column, and the lower end of guide column is inserted into the vertical rod cavity;The both ends of the crossbeam have pin hole;The pull rod and retainer are two, symmetrically installed;The upper end of the pull rod is connected with the pin shaft of the guide column;The retainer includes horizontal plate, and two inverted L-shaped vertical plates are fixedly connected to the inner side of the middle part of horizontal plate;The vertical edge of the inverted L-shaped vertical plate is connected with the pin shaft of crossbeam, and the upper horizontal edge is connected with the pin shaft of the lower end of the pull rod;The dog has four, respectively rotationally connected in the horizontal plate both ends of the retainer, and there is fastening mechanism to realize the locking of position.Compared with prior art, it has the characteristics of safe and reliable.

Description

Technical Field

[0001] This invention relates to a lifting device, and more particularly to an adjustable grinding wheel lifting device. Background Technology

[0002] Grinding wheels are the most widely used and extensive type of abrasive tool, used for grinding, grooving, and cutting of metal and non-metal workpieces. However, as grinding wheels wear down during use, their diameter gradually decreases. When the linear speed of the grinding wheel no longer meets the processing requirements, it must be replaced. Grinding wheels used in steel production enterprises are thick and heavy, requiring operators to manually lift them from the storage box onto the equipment's spindle each time they are disassembled and installed offline. Each grinding wheel weighs tens of kilograms, necessitating 3-4 people working together to move a new wheel, a physically demanding process. Furthermore, due to their weight, the combined effort of multiple operators increases the risk of injuries such as crushing, crushing, and back sprains, posing a high safety hazard. Additionally, harder grinding wheels are more expensive and brittle, increasing the risk of them slipping and breaking during manual handling. Furthermore, different grinding requirements necessitate the use of grinding wheels of different specifications (φ1100mm, φ915mm) and materials, thus limiting the use of conventional lifting devices.

[0003] To address this issue, the applicant designed a "Grinding Wheel Lifting Tool" (CN107324208A), which includes a lifting beam, a clamping device connected to the lifting beam, and an explosion-proof adjusting rod mounted on the clamping device. However, during application, because the clamping base is semi-circular, although the explosion-proof adjusting rod can be used to adjust the size of the grinding wheel, changes in the grinding wheel diameter prevent it from properly engaging with the clamping base, easily causing edge damage. Furthermore, the device uses a linkage for clamping; if the lowered surface is unstable, the clamping force is lost, causing tilting and potentially leading to accidents or damage to the grinding wheel.

[0004] Therefore, there is an urgent need for an adjustable grinding wheel lifting tool with better clamping force and stability. Summary of the Invention

[0005] The technical objective of this invention is to address the shortcomings of the prior art by providing an adjustable grinding wheel lifting tool. This tool enables the handling of grinding wheels of various sizes, improving the traditional manual labor method of handling grinding wheels and improving working conditions by replacing manual labor with machinery.

[0006] The technical solution of this invention to solve its technical problem is: an adjustable grinding wheel lifting tool, characterized in that: it includes a lifting ring, a guide column, a tie rod, a retainer, claws, and a support beam; the lifting ring is fixedly connected to the upper end of the guide column; the support beam includes a horizontal beam and a vertical rod; the vertical rod has a cavity adapted to the lower end of the guide column, and the lower end of the guide column is inserted into the cavity of the vertical rod; both ends of the horizontal beam have pin holes; there are two tie rods and retainers, which are symmetrically installed; the upper end of the tie rod is connected to the guide column pin; the retainer includes a horizontal plate, and two inverted L-shaped vertical plates are fixedly connected to the inner side of the middle of the horizontal plate; the vertical edge of the inverted L-shaped vertical plate is connected to the horizontal beam pin, and the upper horizontal edge is connected to the lower end of the tie rod pin; there are four claws, which are rotatably connected to both ends of the horizontal plate of the retainer, and a fastening mechanism is provided to lock the position.

[0007] Furthermore, two small horizontal plates are fixedly connected to the upper end of the guide post, and each of the small horizontal plates has a through hole at both ends.

[0008] Furthermore, the cross-section of the aforementioned claw is an isosceles triangle with a through hole in the middle, and the fastening mechanism is fastened with bolts. The through hole of the claw is connected to both ends of the horizontal plate by fastening bolts.

[0009] Furthermore, the base of the aforementioned isosceles triangle has anti-slip texture.

[0010] Furthermore, the thickness of the base side of the aforementioned isosceles triangle is greater than that of the other two sides.

[0011] Furthermore, one of the through holes of the aforementioned claw and the through hole of the horizontal plate is a threaded hole.

[0012] Furthermore, the through hole of the aforementioned chuck is a threaded hole.

[0013] Furthermore, the crossbeam of the aforementioned support beam has two pin holes at both ends.

[0014] Furthermore, the pin holes at both ends of the crossbeam of the aforementioned support beam are strip-shaped holes.

[0015] Furthermore, the aforementioned strip-shaped hole has graduation lines.

[0016] Compared with the prior art, the present invention has the following outstanding advantages:

[0017] 1. By using this invention, a task that originally required 3-4 people to work together can now be completed by 1-2 people, reducing the physical labor of personnel;

[0018] 2. Using mechanical hoisting instead of manual handling increases the level of mechanization on site and reduces the risk of accidents such as crushing, squeezing, or twisting of the waist caused by grinding wheel disassembly.

[0019] 3. By implementing this invention, the efficiency of grinding wheel handling is improved, and labor costs are reduced;

[0020] 4. It offers better adjustability, more reliable clamping, and higher safety. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 yes Figure 1 Top view.

[0023] Figure 3 This is a schematic diagram of the cage structure of the present invention.

[0024] Figure 4 yes Figure 3 Top view.

[0025] Figure 5 This is a schematic diagram of the claw structure of the present invention.

[0026] Figure 6 yes Figure 5 Top view.

[0027] Figure 7 This is a schematic diagram of hoisting a φ1100mm grinding wheel in Example 2.

[0028] Figure 8 yes Figure 7 Top view.

[0029] Figure 9 This is a schematic diagram of hoisting a φ915mm grinding wheel in Example 2.

[0030] Figure 10 yes Figure 9 Top view. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0032] In the following embodiments, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this invention application according to the specific circumstances.

[0033] For better description, the side facing the grinding wheel is considered "inner," and the opposite side is considered "outer." It should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," "end," and "side," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the embodiments of this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this invention.

[0034] like Figure 1 , 2 As shown, the present invention includes a lifting ring 1, a guide post 2, a tie rod 3, a retainer 4, a claw 6, and a support beam 7.

[0035] The lifting ring 1 is fixedly connected to the upper end of the guide column 2.

[0036] The guide post 2 has two small horizontal plates fixedly connected to its upper end, and each of the small horizontal plates has a through hole at both ends.

[0037] The supporting beam 7 is inverted T-shaped, comprising a horizontal beam and a vertical rod. The vertical rod has a cavity that matches the lower end of the guide post 2, and the lower end of the guide post 2 is inserted into the cavity of the vertical rod and can slide. Each end of the horizontal beam has a pin hole 71.

[0038] The tie rod 3 and the retainer 4 are two in number and are installed symmetrically.

[0039] like Figure 3 , 4 As shown, the retainer 4 includes a horizontal plate 41, with two inverted L-shaped vertical plates 42 fixedly connected to the inner side of the middle portion of the horizontal plate 41. Each of the upper horizontal edge 421 and vertical edge 422 of the inverted L-shaped vertical plates 42 has a through hole. The horizontal plate 41 has a through hole at each end.

[0040] The pull rod 3 has through holes at both ends, namely an upper through hole and a lower through hole. The upper through hole is connected to the two small horizontal through holes of the guide post 2 by a pin; the lower through hole is connected to the through holes of the upper horizontal edge 421 of the two inverted L-shaped vertical plates 42 by a pin.

[0041] The two inverted L-shaped vertical plates 42 have through holes on their vertical sides 422 and are connected to the crossbeam pin holes 71 by pins.

[0042] The thickness of the pull rod 3 is equal to the distance between the two small horizontal plates of the guide post 2 and the distance between the vertical sides 422 of the two inverted L-shaped vertical plates 42.

[0043] like Figure 5 , 6 As shown, there are four claws 6, which are rotatably connected to both ends of the horizontal plate 41 of the retainer, and are locked in position by a fastening mechanism. Specifically, each claw 6 is an isosceles triangle with a through hole in the middle in cross-section, and the base of the triangle has anti-slip texture. The fastening mechanism uses fastening bolts to lock the position. In the optimized solution, the base of the triangle extends downwards. The through hole of the claw 6 is connected to the through hole of the horizontal plate 41 by fastening bolts. In the optimized solution, one of the through holes of the claw 6 and the horizontal plate 41 is a threaded hole, and the fastening bolt is threaded to it to increase stability. In this embodiment, the through hole of the claw 6 is a threaded hole. After the fastening bolt is threaded to it, it is inserted into the through hole of the horizontal plate 41, the anti-slip texture side is adjusted to contact the grinding wheel, and then the nut is tightened to achieve a secure fit.

[0044] To increase clamping force, a positioning pin 5 may also be included. The upper horizontal edge 421 of the retainer 4 is fixedly connected to a bearing 43. The positioning pin 5 is L-shaped, with the upper end of the positioning vertical rod 51 passing through the bearing and threadedly connected to a fastening nut. The horizontal clamping plate 52 can rotate to below the crossbeam of the support beam 7. When the horizontal clamping plate 52 rotates to below the crossbeam of the support beam 7, the fastening nut is tightened, at which point the retainer 4 is fixed to the outer pin hole 71 of the support beam 7, and the two are locked in place. When the horizontal clamping plate 52 rotates away from below the crossbeam, the guide post 2, pull rod 3, and retainer 4 form a linkage structure. As the guide post 2 is lifted, the retainer 4 rotates outward, and the lower part of the jaw 6 retracts inward, thus lifting the edge of the grinding wheel. After the grinding wheel is lifted to the predetermined position, it falls, locking the positioning pin 5 back in place.

[0045] In Example 1, the pin holes 71 at both ends of the crossbeam of the support beam 7 are single. This is suitable for transporting grinding wheels of a single specification.

[0046] In Example 2, the support beam 7 has two pin holes 71 at both ends of the crossbeam, which are used to match the transfer of two common specifications of grinding wheels, φ1100mm and φ915mm.

[0047] like Figure 7, 8 As shown, when hoisting a φ1100mm grinding wheel, fix the retainer 4 on the outer pin hole 71 of the support beam 7, hoist the device onto the grinding wheel, unscrew the positioning pin 5, lift the crane to tighten the retainer 4, so that the chuck 6 firmly locks the side of the grinding wheel, lift the grinding wheel to the predetermined position and then lower it, screw the positioning pin 5 back, and return the lifting device to its original position.

[0048] like Figure 9 , 10 As shown, when hoisting the φ915mm grinding wheel, fix the retainer 4 on the inner pin hole 71 of the support beam 7 and use it according to the above steps.

[0049] In Example 3, the pin holes 71 at both ends of the crossbeam of the support beam 7 are strip-shaped holes, allowing the bolts to move within them and enabling the transfer of grinding wheels of various specifications. In this example, the strip-shaped holes have graduated lines to ensure balance on both sides.

[0050] It should be noted that any aspects not described in detail in this embodiment are techniques known in the art.

[0051] The above description is only for the purpose of describing specific embodiments of the present invention in detail. For those skilled in the art, various obvious changes made to it without departing from the spirit and scope of the present invention are within the protection scope of the present invention.

Claims

1. An adjustable grinding wheel lifting tool, characterized in that: Includes lifting rings, guide columns, tie rods, cages, claws, and support beams; The lifting ring is fixedly connected to the upper end of the guide column; The support beam includes a crossbeam and a vertical rod; the vertical rod has a cavity that matches the lower end of the guide post, and the lower end of the guide post is inserted into the cavity of the vertical rod; the crossbeam has pin holes at both ends; There are two tie rods and cages, installed symmetrically; the upper end of the tie rod is connected to the guide pin. The retainer includes a horizontal plate, and two inverted L-shaped vertical plates are fixedly connected to the inner side of the middle of the horizontal plate; the vertical side of the inverted L-shaped vertical plate is connected to the horizontal beam pin, and the upper horizontal side is connected to the lower end pin of the tie rod. There are four claws, which are rotatably connected to both ends of the horizontal plate of the retainer, and are locked in position by a fastening mechanism; the cross-section of the claw is an isosceles triangle with a through hole in the middle, and the fastening mechanism is a fastening bolt. The through hole of the claw is connected to both ends of the horizontal plate by the fastening bolt. It also includes a positioning pin; the upper horizontal side of the retainer is fixedly connected to the shaft seat, and the positioning pin is L-shaped. The upper end of the positioning vertical rod of the positioning pin passes through the shaft seat and is threadedly connected to the fastening nut; the horizontal clamping plate of the positioning pin can be rotated to the lower side of the crossbeam of the support beam; when the horizontal clamping plate is rotated to the lower side of the crossbeam of the support beam, the fastening nut is tightened, and at this time the retainer is fixed on the outer pin hole of the support beam, and the two are locked in place; when the horizontal clamping plate is rotated away from the lower side of the crossbeam, the guide column, the tie rod, and the retainer become a linkage structure. As the guide column is lifted, the retainer rotates outward, and the lower part of the chuck retracts inward, thereby lifting the edge of the grinding wheel; after the grinding wheel is lifted to the predetermined position, it falls down and the positioning pin is rotated back to lock.

2. The adjustable grinding wheel lifting tool according to claim 1, characterized in that: The upper end of the guide post is fixedly connected to two small horizontal plates, each with a through hole at both ends.

3. The adjustable grinding wheel lifting tool according to claim 1, characterized in that: The base of the isosceles triangle has anti-slip texture.

4. The adjustable grinding wheel lifting tool according to claim 3, characterized in that: The thickness of the base side of the isosceles triangle is greater than that of the other two sides.

5. The adjustable grinding wheel lifting tool according to claim 1, characterized in that: The through hole of the claw and the through hole of the horizontal plate, one of which is a threaded hole.

6. The adjustable grinding wheel lifting tool according to claim 5, characterized in that: The through hole of the chuck is a threaded hole.

7. The adjustable grinding wheel lifting tool according to claim 1, characterized in that: The crossbeam of the support beam has two pin holes at both ends.

8. The adjustable grinding wheel lifting tool according to claim 1, characterized in that: The pin holes at both ends of the crossbeam of the supporting beam are strip-shaped holes.

9. The adjustable grinding wheel lifting tool according to claim 8, characterized in that: The strip-shaped hole has graduation lines.

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