A lifting tool capable of placing a load at a desired equilibrium point

Abstract

This utility model belongs to the field of transmission hoisting technology, specifically relating to a hoisting tool for placing a balance point. It includes a horizontal adjusting rod with a side groove extending through its side and a top groove connected to the side groove. A sliding adjusting block drives a U-shaped hanging ring to slide synchronously, which in turn drives a screw to slide synchronously. After the adjusting block slides to the appropriate position, the nut is tightened to fix the screw, thus limiting the stability of the adjusting block. At this point, when the U-shaped hanging ring is lifted by the sling, the angle of the horizontal adjusting rod will adaptively deflect, thereby balancing the deflection angle during transformer housing hoisting and bringing the transformer housing to a relatively balanced state. This hook point is the balance point during hoisting, facilitating the relatively horizontal placement of the transformer housing and increasing the convenience of transformer housing hoisting.

Description

Technical Field

[0001] This utility model belongs to the field of gearbox hoisting technology, specifically relating to a hoisting tool that can place the balance point to be found. Background Technology

[0002] The transmission housing is a core component of an automotive transmission, primarily used to mount, secure, and protect the internal transmission mechanisms (such as gears and shafts), and to provide a lubricating, cooling, and sealing environment. Traditional transmission housings are mostly made of gray cast iron, while modern models often use die-cast aluminum alloys for lightweighting, and some high-performance vehicles may use high-strength steel. Its surface must be adapted to the complex layout of the internal transmission mechanisms (such as the spatial positions of gears and shafts), and it requires reinforcing ribs to enhance rigidity (preventing shaft and bearing tilting). Functional structures such as oil filler holes, drain holes, and vent holes are also included. Furthermore, lightweight design involves adjusting local wall thickness and reinforcing rib distribution through topology optimization, ultimately resulting in an irregular shape.

[0003] Although lightweight design is now required, the transmission housing is still quite heavy. Handling it manually is time-consuming and labor-intensive. Generally, hoisting is used to assist in the handling. However, the irregular shape and structure of the transmission housing cause a significant shift in its center of gravity. As a result, when lifted by ropes and hooks, the irregular transmission housing will tilt significantly. This makes it impossible to place the transmission housing horizontally directly. Multiple people are needed to support and adjust the level of the transmission housing before it can be slowly lifted down, which is quite troublesome and not conducive to the rapid lifting and placement of the transmission housing. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide a lifting fixture that can be used to place the balance point, thus solving the problem that although lightweight design is required now, the overall weight of the transmission housing is still relatively heavy. Manual handling is time-consuming and labor-intensive. Generally, lifting is used to assist in handling. However, the irregular distribution of the shape and structure of the transmission housing causes a significant shift in the center of gravity of the transmission housing. As a result, when lifted by ropes and hanging rings, the irregular transmission housing will tilt significantly. This makes it impossible to place the transmission housing horizontally directly during lifting. Multiple people are needed to support and adjust the level of the transmission housing before it is slowly lifted down, which is cumbersome and inconvenient for the rapid lifting and lowering of the transmission housing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a lifting fixture for placing a balance point, comprising a horizontal adjusting rod, a side groove extending through the side of the horizontal adjusting rod, a top groove extending through the upper side of the horizontal adjusting rod, the top groove communicating with the side groove, an adjusting block slidably disposed on the inner side of the side groove, a screw symmetrically fixedly disposed on the upper side of the adjusting block, the screw threadedly connected to the upper side of the horizontal adjusting rod through the top groove, a connecting hole centrally disposed on the side of the adjusting block, a U-shaped hanging ring fastened to the upper side of the adjusting block by bolts through the connecting hole, a vertical rod fixedly disposed on the lower middle part of the horizontal adjusting rod, a horizontal bar fixedly disposed on the lower end of the vertical rod, a connecting block fixedly disposed on the lower side of the horizontal bar, a lifting rod symmetrically disposed on the lower side of the connecting block, and a hook block fixedly disposed on the lower end of the lifting rod.

[0006] The beneficial effects of this utility model are as follows: The sliding adjustment block drives the U-shaped hanging ring to slide synchronously, and the adjustment block drives the screw to slide synchronously. After the adjustment block slides to the appropriate position, the nut is tightened to fix the screw, thereby limiting the stability of the adjustment block. At this time, when the U-shaped hanging ring is lifted by the sling, the angle of the horizontal adjustment rod will be adaptively deflected, thereby balancing the deflection angle when the transformer shell is lifted, so that the transformer shell is in a relatively balanced state. That is, the hook point at this time is the balance point when lifting, which makes it easier to make the transformer shell relatively horizontal, and facilitates the quick and convenient horizontal placement of the transformer shell during hoisting, increasing the convenience of transformer shell hoisting.

[0007] To increase the friction between the two;

[0008] As a further improvement to the above technical solution: the inner surface of the side groove and the contact surface of the adjusting block are both rough frosted surfaces.

[0009] The beneficial effects of this improvement are as follows: the rough frosted surface design of the inner side of the side groove and the contact surface of the adjusting block increases the friction between the two, effectively preventing the adjusting block from easily sliding and shifting after sliding positioning and before locking, ensuring the stability of the fixed position of the U-shaped hanging ring, thereby ensuring the continuity of the hoisting balance state and improving the reliability of tooling adjustment.

[0010] In order to allow for hooking and lifting from both the inside and outside of the transformer casing as needed;

[0011] As a further improvement to the above technical solution: the hook block has a lifting rod protruding from both sides.

[0012] The beneficial effects of this improvement are: the structure with protruding lifting rods on both sides of the hook block allows for hooking and lifting from the inside and outside of the transformer housing as needed.

[0013] To serve as a protective buffer;

[0014] As a further improvement to the above technical solution: rubber buffer pads are affixed to the connection points of the boom and the hook block.

[0015] The beneficial effects of this improvement are as follows: the rubber buffer pad attached to the connection between the boom and the hook block can absorb the vibration and impact generated during the lifting, moving or placing process, which reduces the mechanical wear at the connection between the hook block and the boom, extends the service life of the components, and avoids the scratch damage to the surface of the gearbox housing caused by rigid collisions, thus protecting the integrity of the lifted parts.

[0016] To increase the cross-sectional strength of the hanger rod;

[0017] As a further improvement to the above technical solution: reinforcing ribs are welded to the middle of the sides of the lifting rods that are far apart from each other.

[0018] The beneficial effects of this improvement are: the reinforcing ribs welded to the outside of the boom increase the cross-sectional strength of the boom, effectively resisting bending deformation caused by gravity and tension during hoisting, and preventing the boom from breaking or deforming due to long-term stress.

[0019] To enhance the connection strength between the uprights and the crossbars;

[0020] As a further improvement to the above technical solution: symmetrical reinforcing ribs are welded at the connection between the uprights and the crossbars.

[0021] The beneficial effects of this improvement are as follows: the symmetrically welded reinforcing ribs at the connection between the uprights and the crossbars can disperse the stress concentration at the connection point, prevent cracking at the weld due to the pulling force during hoisting, enhance the connection strength between the uprights and the crossbars, and ensure the stability of the overall structure of the tooling.

[0022] For the purpose of power;

[0023] As a further improvement to the above technical solution: the two sides of the connecting block and the crossbar are bolted together; a sliding groove is provided on the upper side of the connecting block; a through groove is provided on the lower side of the connecting block; the through groove communicates with the sliding groove; a slider is slidably provided on the inner side of the sliding groove corresponding to the lifting rod; the upper end of each lifting rod passes through the through groove and is fixedly connected to the corresponding slider; an adjusting rod is fixedly provided in the middle of the side of the lifting rods that are close to each other; and a hexagonal threaded sleeve is threaded to the end of each adjusting rod that is close to each other.

[0024] The beneficial effects of this utility model are as follows: the connecting block is connected to the crossbar by bolts, and the slider in its groove can drive the hanging rod to slide along the through groove. With the adjustment rod and the thread adjustment of the hexagonal threaded sleeve, the lateral distance between the two hanging rods can be flexibly adjusted to adapt to gearbox housings of different widths. At the same time, rotating the hexagonal threaded sleeve can finely adjust the relative position of the hanging rods to ensure that the housing is hooked securely when hooked.

[0025] The parts of the lifting tool not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the structural connection of the horizontal adjustment rod in this utility model;

[0028] Figure 3 This is a schematic diagram of the connecting block in this utility model;

[0029] Figure 4 This is a schematic diagram of the structural connection of the suspension rod in this utility model;

[0030] Figure 5 This is a schematic diagram of the connecting block in this utility model;

[0031] In the diagram: 1. Horizontal adjustment rod; 2. Side groove; 3. Top groove; 4. Adjusting block; 5. Screw; 6. Nut; 7. Connecting hole; 8. U-shaped hanging ring; 9. Vertical pole; 91. Reinforcing rib plate; 10. Horizontal bar; 11. Connecting block; 111. Slide groove; 112. Through groove; 12. Hanging rod; 121. Sliding block; 122. Reinforcing rib; 123. Adjusting rod; 124. Hexagonal threaded sleeve; 13. Hook block; 14. Rubber buffer pad. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0033] like Figures 1-5As shown: A lifting fixture for placing a point of balance includes a horizontal adjusting rod 1. A side groove 2 is formed through the side of the horizontal adjusting rod 1, and a top groove 3 is formed on the upper side of the horizontal adjusting rod 1. The top groove 3 communicates with the side groove 2. An adjusting block 4 is slidably arranged inside the side groove 2. Screws 5 are symmetrically fixed on the upper side of the adjusting block 4. The screws 5 pass through the top groove 3 and are threaded to the upper side of the horizontal adjusting rod 1, where a nut 6 is connected. A connecting hole 7 is formed at the center of the side of the adjusting block 4, and a U-shaped hanging ring 8 is bolted to the upper side of the adjusting block 4 through the connecting hole 7. A vertical rod 9 is fixedly installed at the lower center of the horizontal adjustment rod 1. A horizontal rod 10 is fixedly installed at the lower end of the vertical rod 9. A connecting block 11 is fixedly installed at the lower side of the horizontal rod 10. A lifting rod 12 is symmetrically arranged at the lower side of the connecting block 11. A hook block 13 is fixedly installed at the lower end of the lifting rod 12. A sliding adjustment block 4 is used. The adjustment block 4 will drive the U-shaped hanging ring 8 to slide synchronously. The adjustment block 4 will drive the screw 5 to slide synchronously. After the adjustment block 4 slides to the appropriate position, the nut 6 is tightened to fix the screw 5, thereby limiting the stability of the adjustment block 4. At this time, the U-shaped hanging ring 8 is lifted by the sling.The angle of the horizontal adjustment rod 1 will adaptively deflect to balance the deflection angle of the transformer shell during lifting, so that the transformer shell is in a relatively balanced state. That is, the hook point at this time is the balance point during lifting, which makes it easier to keep the transformer shell relatively horizontal and facilitates quick and convenient horizontal placement of the transformer shell during lifting, increasing the convenience of lifting the transformer shell. The inner surface of the side groove 2 and the contact surface of the adjustment block 4 are both rough frosted surfaces. The rough frosted surface design of the inner surface of the side groove 2 and the contact surface of the adjustment block 4 increases the friction between the two, effectively preventing the adjustment block 4 from easily sliding and shifting after sliding positioning and before locking, ensuring the stability of the fixed position of the U-shaped hanging ring 8, thereby ensuring the continuity of the lifting balance state and improving the reliability of tooling adjustment. Both sides of the hook block 13 have protruding lifting rods 12. This structure allows for hooking and lifting from the inside or outside of the transformer housing as needed. Rubber buffer pads 14 are affixed to the connection points of the lifting rods 12 and hook blocks 13. These pads absorb vibrations and impacts generated during lifting, moving, or placing, reducing mechanical wear and extending the service life of the components. They also prevent scratches on the surface of the gearbox housing caused by rigid collisions, protecting the integrity of the lifted components. Reinforcing ribs 122 are welded to the center of the sides of the lifting rods 12 that are furthest apart. These reinforcing ribs 122 increase the lifting capacity of the lifting rods 13. The cross-sectional strength of rod 12 effectively resists bending deformation caused by gravity and tension during hoisting, preventing the rod 12 from breaking or deforming due to long-term stress. Reinforcing ribs 91 are symmetrically welded at the connection between the upright rod 9 and the horizontal rod 10. These reinforcing ribs 91 disperse stress concentration at the connection point, preventing cracking at the weld due to pulling force during hoisting, enhancing the connection strength between the upright rod 9 and the horizontal rod 10, and ensuring the overall stability of the fixture structure. The two sides of the connecting block 11 are bolted to the horizontal rod 10. A sliding groove 111 is provided on the upper side of the connecting block 11, and a through groove 112 is provided on the lower side of the connecting block 11. The through groove 112 communicates with the sliding groove 111. A slider 121 is slidably provided on the inner side of the connecting block 11 corresponding to the lifting rod 12. The upper ends of the lifting rods 12 are fixedly connected to the corresponding sliders 121 through the through grooves 112. An adjusting rod 123 is fixedly provided in the middle of the side of the lifting rods 12 that are close to each other. The ends of the adjusting rods 123 that are close to each other are threaded with hexagonal threaded sleeves 124. The connecting block 11 is connected to the crossbar 10 by bolts. The slider 121 in its sliding groove 111 can drive the lifting rod 12 to slide along the through groove 112. With the thread adjustment of the adjusting rods 123 and the hexagonal threaded sleeves 124, the lateral distance between the two lifting rods 12 can be flexibly adjusted to adapt to gearbox housings of different widths. At the same time, rotating the hexagonal threaded sleeves 124 can finely adjust the relative position of the lifting rods 12 to ensure that the housing is securely hooked when hooked.

[0034] Working principle and usage process of this utility model:

[0035] In use, hook the lower hook block 13 of the lifting rod 12 onto both sides of the transformer housing. When hooking, ensure that the tilt direction of the transformer housing is on the same plane as the horizontal adjustment rod 1, and do not hook perpendicular to the plane of the horizontal adjustment rod 1 along the tilt direction. At this time, hook the hook of the sling onto the U-shaped hanging ring 8, pull the sling upwards, and the U-shaped hanging ring 8 pulls the horizontal adjustment rod 1. The horizontal adjustment rod 1 pulls the lower structure through the upright rod 9, and the lifting rod 12 pulls the hook block 13 upwards, thus pulling the transformer housing. When the transformer housing tilts, it is necessary to adjust the position of the U-shaped hanging ring 8 relative to the horizontal adjustment rod 1, i.e., the hook position of the sling, to balance the tilt angle of the transformer housing. The sliding adjustment block 4 in slot 2 will drive the U-shaped hanging ring 8 to slide synchronously. The adjustment block 4 will also drive the screw 5 to slide synchronously. After the adjustment block 4 slides to the appropriate position, tighten the nut 6 to fix the screw 5, thereby limiting the stability of the adjustment block 4. At this time, when the U-shaped hanging ring 8 is lifted by the sling, the angle of the horizontal adjustment rod 1 will be adaptively deflected to balance the deflection angle when the transformer shell is lifted, so that the transformer shell is in a relatively balanced state. That is, the hook point at this time is the balance point when lifting, which makes it easier to make the transformer shell relatively horizontal, and facilitates the quick and convenient horizontal placement of the transformer shell during hoisting, increasing the convenience of the transformer shell hoisting.

[0036] In addition, the rough frosted surface design of the inner side of the side groove 2 and the contact surface of the adjusting block 4 increases the friction between the two, effectively preventing the adjusting block 4 from easily sliding and shifting after sliding positioning and before locking, ensuring the stability of the fixed position of the U-shaped hanging ring 8, thereby ensuring the continuity of the hoisting balance state and improving the reliability of tooling adjustment.

[0037] In addition, the structure of the hook block 13 with the lifting rod 12 protruding on both sides can be used to hook and lift the transformer housing from the inside and outside as needed.

[0038] In addition, the rubber buffer pad 14 attached to the connection between the boom 12 and the hook block 13 can absorb the vibration and impact generated during the lifting, moving or placing process. This reduces mechanical wear at the connection between the hook block 13 and the boom 12, extends the service life of the components, and avoids scratch damage to the surface of the gearbox housing caused by rigid collisions, thus protecting the integrity of the lifted parts.

[0039] In addition, the reinforcing ribs 122 welded to the outside of the boom 12 increase the cross-sectional strength of the boom 12, effectively resisting the bending deformation caused by gravity and tension during hoisting, and preventing the boom 12 from breaking or deforming due to long-term stress.

[0040] In addition, the symmetrically welded reinforcing ribs 91 at the connection between the upright 9 and the horizontal bar 10 can disperse the stress concentration at the connection point, prevent the weld from cracking due to the pulling force during hoisting, enhance the connection strength between the upright 9 and the horizontal bar 10, and ensure the stability of the overall structure of the tooling.

[0041] In addition, the connecting block 11 is connected to the crossbar 10 by bolts. The slider 121 in its groove 111 can drive the hanger 12 to slide along the through groove 112. With the thread adjustment of the adjusting rod 123 and the hexagonal threaded sleeve 124, the lateral distance between the two hangers 12 can be flexibly adjusted to adapt to gearbox housings of different widths. At the same time, rotating the hexagonal threaded sleeve 124 can finely adjust the relative position of the hangers 12 to ensure that the housing is securely hooked when hooked.

[0042] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A lifting fixture for placing a point of equilibrium, characterized in that: The device includes a horizontal adjustment rod (1), a side groove (2) extending through the side of the horizontal adjustment rod (1), and a top groove (3) on the upper side of the horizontal adjustment rod (1). The top groove (3) communicates with the side groove (2). An adjustment block (4) is slidably arranged on the inner side of the side groove (2). A screw (5) is symmetrically fixed on the upper side of the adjustment block (4). The screw (5) passes through the top groove (3) and is threaded to the upper side of the horizontal adjustment rod (1) with a nut (6). The side of the adjustment block (4) contains... The center has a connecting hole (7). A U-shaped hanging ring (8) is fastened to the upper side of the adjusting block (4) through the connecting hole (7) with a bolt. A vertical rod (9) is fixedly installed in the middle of the lower side of the horizontal adjusting rod (1). A horizontal bar (10) is fixedly installed at the lower end of the vertical rod (9). A connecting block (11) is fixedly installed on the lower side of the horizontal bar (10). A hanging rod (12) is symmetrically installed on the lower side of the connecting block (11). A hook block (13) is fixedly installed at the lower end of the hanging rod (12).

2. The lifting fixture for placing the balance point as described in claim 1, characterized in that: The inner surface of the side groove (2) and the contact surface of the adjusting block (4) are both rough frosted surfaces.

3. The lifting fixture for placing the balance point as described in claim 1, characterized in that: The hook block (13) has a rod (12) protruding from both sides.

4. A lifting fixture for placing a balance point as described in claim 1, characterized in that: Rubber buffer pads (14) are affixed to the connection points of the boom (12) and hook block (13).

5. A lifting fixture for placing a balance point as described in claim 1, characterized in that: Each of the lifting rods (12) has a reinforcing rib (122) welded to the middle of the side that is far apart from each other.

6. A lifting fixture for placing a point of equilibrium as described in claim 1, characterized in that: The connection between the upright (9) and the crossbar (10) is symmetrically welded with reinforcing ribs (91).

7. A lifting fixture for placing a balance point as described in claim 1, characterized in that: The two sides of the connecting block (11) and the crossbar (10) are bolted together. The upper side of the connecting block (11) is provided with a sliding groove (111), and the lower side of the connecting block (11) is provided with a through groove (112). The through groove (112) communicates with the sliding groove (111). The inner side of the sliding groove (111) is provided with a slider (121) corresponding to the hanging rod (12). The upper end of the hanging rod (12) passes through the through groove (112) and is fixedly connected to the corresponding slider (121). The middle part of the side of the hanging rod (12) that is close to each other is fixedly provided with an adjusting rod (123). The ends of the adjusting rods (123) that are close to each other are threaded with a hexagonal threaded sleeve (124).

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