A lifting support device for machine repair work

Abstract

The application discloses a lifting supporting device for machine repair and maintenance operation, and belongs to the technical field of machine repair and maintenance auxiliary equipment. A plurality of oblique supporting legs are circumferentially arranged on a supporting leg connecting plate, and each oblique supporting leg is connected with a heavy-duty footing disc through a joint bearing; a U-shaped support on the supporting leg connecting plate is provided with a guide sleeve, a precision trapezoidal screw is arranged in the guide sleeve, and a lifting adjusting nut drives the precision trapezoidal screw to lift through a cross adjusting handle rod. The upper end of the precision trapezoidal screw is connected with an anti-skid bearing panel through a ball head matching seat and a universal ball head, and the side of the guide sleeve is provided with a radial locking piece for abutting against the precision trapezoidal screw. The device can adapt to uneven working ground and the bottom surface of an inclined equipment, and can keep a stable supporting state after height adjustment.

Description

Technical Field

[0001] This invention belongs to the technical field of auxiliary equipment for machine repair and maintenance, and specifically relates to a lifting support device for machine repair and maintenance operations. Background Technology

[0002] During the maintenance, disassembly, and parts replacement of mechanical equipment, mechanics often need to lift the equipment or parts to maintain them at a suitable height for maintenance operations. Currently, jacks and mechanical lifting supports are commonly used to lift these components for disassembly, assembly, and repositioning.

[0003] However, the ground at machine repair work sites may be sloping or have local elevation differences, and the bottom surface of the equipment being lifted may not be level. In these environments, existing lifting support equipment struggles to maintain stable contact with both the work surface and the lifted equipment after height adjustment, easily leading to uneven support stress, positional shifts, or unstable support conditions, thus affecting the smooth progress of machine repair and maintenance work. Therefore, improving the overall support stability of lifting support equipment in complex maintenance environments is a problem that needs to be solved in existing technologies. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a lifting support device for machine repair and maintenance operations, which can solve the above problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A lifting support device for machine repair and maintenance operations, wherein four outwardly inclined support legs are circumferentially connected to the support leg connecting plate, and the lower end of each of the inclined support legs is movably connected to a heavy-duty foot plate through a joint bearing, so that each of the heavy-duty foot plates can be in contact with the working ground. A U-shaped bracket is provided on the outrigger connecting plate, and a guide sleeve is vertically provided on the U-shaped bracket. A precision trapezoidal screw that can move along its axial direction is installed inside the guide sleeve. A lifting adjustment nut that is threadedly engaged with the precision trapezoidal screw is rotatably supported at the upper end of the guide sleeve. A cross-shaped adjustment handle is provided on the lifting adjustment nut for rotating the lifting adjustment nut and driving the precision trapezoidal screw to rise and fall along the guide sleeve. A ball joint seat is provided at the upper end of the precision trapezoidal screw, and a universal ball joint is movably provided in the ball joint seat. The universal ball joint is connected to the anti-slip bearing panel, so that the anti-slip bearing panel can deflect accordingly according to the tilt direction of the bottom surface of the supported equipment. The guide sleeve is provided with a radial locking member on its side. The locking end of the radial locking member can move radially along the guide sleeve and abut against the precision trapezoidal lead screw.

[0006] Compared with the prior art, the beneficial effects of the present invention are: This invention improves the contact state of the lifting support device on uneven working ground by setting multiple outwardly inclined support legs around the circumference of the outrigger connecting plate and installing joint bearings between each inclined support leg and the heavy-duty foot plate. This allows each heavy-duty foot plate to rotate and fit against the working ground according to the ground inclination or height difference at the corresponding position, thereby reducing uneven support force caused by local suspension or insufficient contact.

[0007] Based on this, the anti-slip load-bearing panel forms a deflectable load-bearing structure through a universal ball joint and a ball joint mating seat. This allows the anti-slip load-bearing panel to adjust according to the inclination direction of the equipment's bottom surface after contacting the supported equipment, and to form surface contact with the equipment's bottom surface. After the lifting adjustment nut drives the precision trapezoidal screw to complete the height adjustment, the radial locking component abuts against the precision trapezoidal screw, restricting radial sway or axial movement of the precision trapezoidal screw. Thus, the lifting support device can simultaneously adapt to uneven working grounds and inclined equipment bottom surfaces, and maintain a stable support state after height adjustment, reducing the impact of uneven support force, positional deviation, or unstable support on machine maintenance and repair operations. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the lower support structure of the present invention; Figure 3 This is a schematic diagram of the U-shaped support structure of the present invention; Figure 4 This is a schematic diagram of the connection structure between the guide sleeve and the U-shaped bracket of the present invention; Figure 5 This is a schematic diagram of the lifting and adjusting structure of the present invention; Figure 6 This is a schematic diagram of the connection structure between the anti-slip bearing panel and the universal ball joint of the present invention; Figure 7 This is a schematic diagram of the anti-slip load-bearing panel structure of the present invention.

[0009] The attached diagram lists the components represented by each number as follows: 1. Anti-slip load-bearing panel; 101. Anti-slip texture; 2. Universal ball joint; 3. Ball joint mating seat; 4. Precision trapezoidal lead screw; 5. Lifting adjustment nut; 6. Cross adjustment handle rod; 601. Anti-slip handle sleeve; 7. Guide sleeve; 701. Longitudinal groove; 8. Radial locking component; 9. U-shaped bracket; 10. Outrigger connecting plate; 11. Center connecting sleeve; 12. Reinforced support rod; 13. Angled support leg; 14. Spherical bearing; 15. Heavy-duty foot plate. Detailed Implementation

[0010] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention. Example 1

[0011] See Figures 1 to 7 In machine repair and maintenance operations, when the working ground has local height differences or inclinations, and the bottom surface of the equipment being lifted is also tilted, the lifting support device is prone to insufficient contact or unstable support. To address these usage scenarios, this embodiment provides a lifting support device for machine repair and maintenance operations.

[0012] See Figure 1 and Figure 2 The outrigger connecting plate 10 is circumferentially connected with four outwardly extending inclined support legs 13. The lower end of each inclined support leg 13 is movably connected to the corresponding heavy-duty foot plate 15 via a spherical bearing 14. A central connecting sleeve 11 is provided below the outrigger connecting plate 10, located between the four inclined support legs 13. The central connecting sleeve 11 is circumferentially connected with multiple radially distributed reinforcing support rods 12. The end of each reinforcing support rod 12 away from the central connecting sleeve 11 is connected to the corresponding inclined support leg 13.

[0013] See Figure 1 , Figures 3 to 5 A U-shaped bracket 9 is provided on the outrigger connecting plate 10, and a guide sleeve 7 is vertically arranged on the U-shaped bracket 9. A precision trapezoidal screw 4 capable of moving axially is inserted inside the guide sleeve 7. A lifting adjusting nut 5 is rotatably supported at the upper end of the guide sleeve 7, and the lifting adjusting nut 5 is threadedly engaged with the precision trapezoidal screw 4. Four cross-shaped adjusting handle rods 6 are arranged circumferentially at intervals around the lifting adjusting nut 5, and each cross-shaped adjusting handle rod 6 has an anti-slip handle sleeve 601 at its end. A longitudinal sliding groove 701 extending axially is opened on the side wall of the guide sleeve 7, and a radial locking member 8 is provided on the side of the guide sleeve 7. The locking end of the radial locking member 8 passes through the side wall of the guide sleeve 7 and is arranged opposite to the precision trapezoidal screw 4.

[0014] See Figure 1 , Figure 6 and Figure 7 The upper end of the precision trapezoidal lead screw 4 is provided with a ball joint seat 3, and a universal ball joint 2 is rotatably installed inside the ball joint seat 3. The universal ball joint 2 is connected to the anti-slip bearing panel 1. The upper surface of the anti-slip bearing panel 1 is provided with anti-slip texture 101.

[0015] In use, place the lifting support device under the equipment to be lifted, so that the four heavy-duty foot plates 15 are in contact with the working ground. When there is a height difference or inclination of the working ground, the heavy-duty foot plates 15 rotate relative to the inclined support legs 13 through the joint bearings 14, so that each heavy-duty foot plate 15 is in contact with the working ground.

[0016] After placement, release the locking end of the radial locking member 8 from the precision trapezoidal screw 4. The operator holds the anti-slip handle sleeve 601 and rotates the lifting adjusting nut 5 via the cross-shaped adjusting handle rod 6. The lifting adjusting nut 5, through its threaded engagement with the precision trapezoidal screw 4, drives the precision trapezoidal screw 4 to move upward along the guide sleeve 7, with the longitudinal slide groove 701 corresponding to the lifting stroke of the precision trapezoidal screw 4.

[0017] When the anti-slip bearing panel 1 contacts the bottom surface of the supported equipment, the universal ball joint 2 rotates within the ball joint mating seat 3 according to the inclination direction of the bottom surface of the supported equipment, causing the anti-slip bearing panel 1 to deflect relative to the ball joint mating seat 3 until the anti-slip bearing panel 1 and the bottom surface of the supported equipment form surface contact. The anti-slip texture 101 contacts the bottom surface of the supported equipment to increase the friction between the anti-slip bearing panel 1 and the supported equipment.

[0018] Once the supported equipment reaches the required support height, tighten the radial locking member 8. This causes the locking end of the radial locking member 8 to move radially along the guide sleeve 7 and press against the precision trapezoidal screw 4, restricting the precision trapezoidal screw 4 from radial swaying or axial movement within the guide sleeve 7. During the support process, the load is sequentially transmitted through the anti-slip bearing panel 1, universal ball joint 2, ball joint mating seat 3, precision trapezoidal screw 4, guide sleeve 7, U-shaped bracket 9, and outrigger connecting plate 10 to the inclined support leg 13, and then through the spherical bearing 14 and heavy-duty foot plate 15 to the working ground.

[0019] After maintenance, loosen the radial locking component 8, and rotate the lifting adjusting nut 5 in the opposite direction using the cross adjusting handle 6 to move the precision trapezoidal screw 4 downward along the guide sleeve 7. The precision trapezoidal screw 4 drives the ball joint seat 3, the universal ball joint 2, and the anti-slip bearing panel 1 to descend synchronously until the anti-slip bearing panel 1 separates from the lifted equipment. Then, move the lifting support device out of the working position. Example 2

[0020] See Figure 2 This embodiment further explains the lower support structure of the lifting support device.

[0021] Four inclined support legs 13 are spaced apart circumferentially along the support leg connecting plate 10 and extend outwards from the support leg connecting plate 10. A central connecting sleeve 11 is located below the support leg connecting plate 10 and between the four inclined support legs 13. Multiple reinforcing support rods 12 are radially distributed circumferentially along the central connecting sleeve 11, with both ends of the reinforcing support rods 12 connected to the central connecting sleeve 11 and the corresponding inclined support leg 13, respectively.

[0022] Each inclined support leg 13 is equipped with a spherical bearing 14 at its lower end, which is located between the inclined support leg 13 and the heavy-duty footplate 15. When the heavy-duty footplate 15 contacts a working surface with height differences or inclination, the heavy-duty footplate 15 can rotate relative to the inclined support leg 13 through the spherical bearing 14, so that the four heavy-duty footplates 15 can adapt to the ground conditions of their respective positions. Example 3

[0023] See Figures 3 to 5 This embodiment further explains the lifting and locking components.

[0024] The U-shaped bracket 9 is mounted on the support leg connecting plate 10, and the guide sleeve 7 is vertically mounted on the U-shaped bracket 9. The precision trapezoidal screw 4 is movably inserted along the axial direction of the guide sleeve 7. The lifting and adjusting nut 5 is rotatably supported on the upper end of the guide sleeve 7 and is sleeved on the outside of the precision trapezoidal screw 4, engaging with the threaded connection of the precision trapezoidal screw 4.

[0025] Four cross-shaped adjustment handles 6 are spaced apart around the circumference of the lifting adjustment nut 5, and anti-slip handle sleeves 601 are respectively installed at the ends of the cross-shaped adjustment handles 6. When the operator drives the lifting adjustment nut 5 to rotate by using the anti-slip handle sleeves 601 and the cross-shaped adjustment handles 6, the lifting adjustment nut 5 drives the precision trapezoidal lead screw 4 to rise or fall along the guide sleeve 7.

[0026] The longitudinal groove 701 is arranged along the axial direction of the guide sleeve 7 and corresponds to the lifting stroke of the precision trapezoidal screw 4. After the height adjustment is completed, the locking end of the radial locking member 8 moves radially along the guide sleeve 7 and abuts against the precision trapezoidal screw 4, thereby limiting the radial wobble or axial movement of the precision trapezoidal screw 4; when it is necessary to lower, the locking end of the radial locking member 8 releases its abutment against the precision trapezoidal screw 4, and then the precision trapezoidal screw 4 is driven to lower through the lifting adjusting nut 5. Example 4

[0027] See Figure 6 and Figure 7 This embodiment will further explain the upper load-bearing structure.

[0028] The ball joint seat 3 is located at the upper end of the precision trapezoidal lead screw 4, and the universal ball joint 2 is rotatably mounted inside the ball joint seat 3. The anti-slip bearing panel 1 is connected to the universal ball joint 2. The upper surface of the anti-slip bearing panel 1 is provided with anti-slip texture 101.

[0029] When the anti-slip bearing panel 1 rises with the precision trapezoidal lead screw 4 and contacts the bottom surface of the supported equipment, the universal ball joint 2 rotates within the ball joint mating seat 3, causing the anti-slip bearing panel 1 to deflect accordingly according to the inclination direction of the bottom surface of the supported equipment. After the anti-slip bearing panel 1 forms surface contact with the bottom surface of the supported equipment, the anti-slip texture 101 increases the friction at the contact point, ensuring that the anti-slip bearing panel 1 remains in contact with the supported equipment during subsequent lifting and support processes.

[0030] The working principle of this invention is as follows: In use, place this device under the machinery or parts to be supported. Four inclined support legs 13 are distributed outwards, and the lower ends of each inclined support leg 13 are movably connected to a heavy-duty support plate 15 via a spherical bearing 14. When the working surface is tilted or has local height differences, the spherical bearing 14 can rotate accordingly, allowing each heavy-duty support plate 15 to contact the ground. The central connecting sleeve 11 is connected to the inclined support legs 13 via multiple radially arranged reinforcing support rods 12 to improve the overall stability of the base assembly.

[0031] When adjusting the height, the operator holds the anti-slip handle sleeve 601 and drives the lifting adjustment nut 5 to rotate via the cross-shaped adjustment handle rod 6. The lifting adjustment nut 5 is rotatably supported on the upper end of the guide sleeve 7 and is threadedly engaged with the precision trapezoidal screw 4. Therefore, when the lifting adjustment nut 5 rotates, it drives the precision trapezoidal screw 4 to rise or fall along the axial direction of the guide sleeve 7. The guide sleeve 7 restricts the direction of movement of the precision trapezoidal screw 4, keeping it in a vertical position. The longitudinal groove 701 is arranged along the axial direction of the guide sleeve 7 and corresponds to the lifting stroke of the precision trapezoidal screw 4.

[0032] As the anti-slip bearing panel 1 gradually contacts the bottom surface of the supported equipment, the eccentric load on the anti-slip bearing panel 1 acts on the universal ball joint 2. The universal ball joint 2 rotates accordingly within the ball joint mating seat 3, allowing the anti-slip bearing panel 1 to deflect according to the inclination direction of the equipment's bottom surface until a stable surface contact is formed between the anti-slip bearing panel 1 and the equipment's bottom surface. The anti-slip texture 101 on the surface of the anti-slip bearing panel 1 increases the friction between it and the equipment's bottom surface, reducing the possibility of lateral slippage of the equipment during the lifting process.

[0033] After reaching the required support height, the operator tightens the radial locking member 8, causing the locking end of the radial locking member 8 to move radially along the guide sleeve 7 and press against the precision trapezoidal screw 4, thereby limiting the radial sway or axial movement of the precision trapezoidal screw 4 within the guide sleeve 7. The load generated by the lifted equipment is sequentially transmitted through the anti-slip bearing panel 1, universal ball joint 2, ball joint mating seat 3, precision trapezoidal screw 4, guide sleeve 7, U-shaped bracket 9, and outrigger connecting plate 10 to the inclined support leg 13, and finally distributed to the ground by each heavy-duty footplate 15.

[0034] After the maintenance work is completed, first loosen the radial locking component 8 to release its locking of the precision trapezoidal screw 4. Then, rotate the lifting adjusting nut 5 in the opposite direction using the cross adjusting handle 6 to allow the precision trapezoidal screw 4 to descend smoothly along the guide sleeve 7. Once the anti-slip bearing panel 1 is completely separated from the supported equipment, the device can be removed from the maintenance station.

[0035] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A lifting support device for machine repair and maintenance operations, characterized in that: The outrigger connecting plate (10) is circumferentially connected with four outwardly inclined support legs (13). The lower ends of each of the inclined support legs (13) are movably connected to the heavy-duty footplate (15) through a joint bearing (14), so that each of the heavy-duty footplates (15) can be attached to the working ground. A U-shaped bracket (9) is provided on the support leg connecting plate (10). A guide sleeve (7) is vertically provided on the U-shaped bracket (9). A precision trapezoidal screw (4) that can move along its axial direction is installed inside the guide sleeve (7). A lifting adjustment nut (5) that is threadedly engaged with the precision trapezoidal screw (4) is rotatably supported at the upper end of the guide sleeve (7). A cross adjustment handle (6) is provided on the lifting adjustment nut (5) to drive the lifting adjustment nut (5) to rotate and drive the precision trapezoidal screw (4) to rise and fall along the guide sleeve (7). A ball joint seat (3) is provided at the upper end of the precision trapezoidal screw (4). A universal ball joint (2) is movably provided inside the ball joint seat (3). The universal ball joint (2) is connected to the anti-slip bearing panel (1) so that the anti-slip bearing panel (1) can deflect accordingly according to the tilt direction of the bottom surface of the supported equipment. The guide sleeve (7) is provided with a radial locking member (8) on its side. The locking end of the radial locking member (8) can move radially along the guide sleeve (7) and abut against the precision trapezoidal lead screw (4).

2. The lifting support device for machine repair and maintenance operations according to claim 1, characterized in that: A central connecting sleeve (11) is provided below the outrigger connecting plate (10). The central connecting sleeve (11) is located between the four inclined support legs (13). The central connecting sleeve (11) is circumferentially connected to multiple radially distributed reinforcing support rods (12). The end of each reinforcing support rod (12) away from the central connecting sleeve (11) is connected to the corresponding inclined support leg (13).

3. The lifting support device for machine repair and maintenance operations according to claim 1, characterized in that: The spherical bearing (14) is disposed between the inclined support leg (13) and the heavy-duty foot plate (15) so that the heavy-duty foot plate (15) can rotate relative to the inclined support leg (13) and fit against the working ground with height difference or inclination.

4. The lifting support device for machine repair and maintenance operations according to claim 1, characterized in that: The lifting adjustment nut (5) is supported on the upper end of the guide sleeve (7). The precision trapezoidal screw (4) is movably arranged along the axial direction of the guide sleeve (7). When the lifting adjustment nut (5) rotates, it drives the precision trapezoidal screw (4) to rise or fall through the threaded engagement between itself and the precision trapezoidal screw (4).

5. A lifting support device for machine repair and maintenance operations according to claim 4, characterized in that: The cross-shaped adjustment handle (6) is provided in four parts, and the four cross-shaped adjustment handles (6) are arranged at intervals along the circumference of the lifting adjustment nut (5). Each cross-shaped adjustment handle (6) is provided with an anti-slip handle sleeve (601) at its end.

6. A lifting support device for machine repair and maintenance operations according to claim 1, characterized in that: The guide sleeve (7) has a longitudinal groove (701) extending along its axial direction on its side wall. The longitudinal groove (701) corresponds to the lifting stroke of the precision trapezoidal screw (4). The locking end of the radial locking member (8) passes through the side wall of the guide sleeve (7) and is arranged opposite to the precision trapezoidal screw (4) to limit the radial sway or axial movement of the precision trapezoidal screw (4) in the guide sleeve (7).

7. A lifting support device for machine repair and maintenance operations according to claim 1, characterized in that: The universal ball joint (2) is rotatably disposed within the ball joint mating seat (3). The anti-slip bearing panel (1) is deflected relative to the ball joint mating seat (3) through the universal ball joint (2) so that the anti-slip bearing panel (1) forms a surface contact with the bottom surface of the supported equipment.

8. A lifting support device for machine repair and maintenance operations according to claim 7, characterized in that: The upper surface of the anti-slip bearing panel (1) is provided with anti-slip texture (101), which is used to increase the friction between the anti-slip bearing panel (1) and the bottom surface of the supported equipment.

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