Lifting device of concrete spreader

Abstract

The utility model discloses a concrete spreader lifting device which comprises a fixing seat, the fixing seat is installed on external equipment, a lubricating mechanism is arranged on the fixing seat, and the lubricating mechanism comprises a lifting arm, a lifting frame, a hydraulic cylinder, a fixing sleeve, a rotating shaft, a limiting disc, a one-way mechanism, an adjusting mechanism, an oil pipe, a piston plate, a sealing disc and a middle plate. The lifting arm is rotationally connected to the fixing base and the lifting frame, the fixing sleeves are fixedly installed on the fixing base and the lifting arm respectively, the rotating shaft is rotationally connected to the hydraulic cylinder and the fixing sleeves respectively, and the lubricating mechanism can effectively reduce friction among the fixing sleeves, the rotating shaft and the hydraulic cylinder, so that abrasion is reduced, and the service life of equipment is prolonged. By injecting lubricating oil, the smoothness and stability of the key parts during operation are ensured, and the overheating and damage risks caused by friction are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete placing crane hoisting, and more specifically, to a concrete placing crane hoisting device. Background Art

[0002] In the prior art, when a concrete placing boom is performing a lifting operation, due to its structural and functional characteristics, it is often necessary to apply a large force. This large force is mainly because the concrete placing boom needs to overcome its own weight and the weight of the concrete, and perform smooth and accurate placing operations at different heights. In particular, when adjusting the concrete placing boom to a higher position, the required force is particularly significant.

[0003] In this case, the fixed sleeve and hydraulic cylinder in the concrete placing boom are the key components of the lifting mechanism. The fixed sleeve, as a connection and support point, plays an important role in transmitting and dispersing the lifting force; while the hydraulic cylinder is the power source for the lifting action. These two parts work closely together during the lifting process to ensure the smooth lifting and stable positioning of the concrete placing boom.

[0004] However, this continuous and repeated lifting action will cause increased friction between the fixed sleeve and the hydraulic cylinder. Since these two parts are usually made of metal materials, long-term friction will cause wear, affecting the operating efficiency and life of the lifting device. In addition, excessive friction may also cause local overheating, further accelerating the wear process, and may even cause structural damage or functional failure. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the problems existing in the prior art, the utility model provides a lifting device for a concrete placing boom to solve the technical problems mentioned in the background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting device of a concrete placing boom, comprising a fixed seat, which is installed on external equipment, and a lubricating mechanism is arranged on the fixed seat, and the lubricating mechanism comprises a lifting arm, a lifting frame, a hydraulic cylinder, a fixed sleeve, a rotating shaft, a limit plate, a one-way mechanism, an adjusting mechanism, an oil pipe, a piston plate, a sealing plate and an intermediate plate, the lifting arm is rotatably connected to the fixed seat and the lifting frame, the fixed sleeve is respectively fixedly installed on the fixed seat and the lifting arm, the rotating shaft is respectively rotatably connected to the hydraulic cylinder and the fixed sleeve, the limit plate is installed on the rotating shaft, and the limit plate is attached to the side of the fixed sleeve, the one-way mechanism and the adjusting mechanism are respectively installed in the rotating shaft, the oil pipe is sleeved on the rotating shaft, the piston plate is slidably connected in the oil pipe, the intermediate plate is installed on the oil pipe, the sealing plate is attached to the intermediate plate, and a plurality of oil outlet holes are opened on the rotating shaft.

[0009] The utility model is further configured that the sealing disc is provided with a push rod, the push rod is provided with a push spring, the piston plate is slidably connected to the push spring, and the design of the push spring ensures the sealing effect.

[0010] The utility model is further configured such that a plurality of guide rods are provided on the piston plate, a threaded disk is threadedly provided on the oil pipe, the plurality of guide rods slide through the threaded disks respectively, a push spring is pressed against the threaded disks, and the design of the guide rods ensures the movement of the piston plate.

[0011] The utility model is further configured that a plurality of guide rods are provided with a pull plate, and a handle is provided on the pull plate, and the design of the pull plate ensures the movement of the plurality of guide rods.

[0012] The utility model is further configured as follows: the one-way mechanism includes a one-way disk and a top block, the one-way disk is sealably mounted on the limit disk, a rotating groove is provided on the one-way disk, a hexagonal groove is provided on the sealing disk, top blocks are respectively mounted in the rotating groove and the hexagonal groove, the two top blocks are in conflict with each other, and the design of the one-way mechanism ensures the sealing effect.

[0013] The utility model is further configured that a sealing ring is coaxially arranged on the middle plate, the sealing ring is pressed against the rotating shaft, and the design of the sealing ring ensures the sealing effect.

[0014] The utility model is further configured as follows: the adjustment mechanism includes an adjustment rod and a threaded sleeve, the threaded sleeve is threadedly connected in the rotating shaft, the adjustment rod is installed on the one-way disk, the threaded sleeve is provided with an adjustment groove, the adjustment rod is clamped in the adjustment groove, and the design of the adjustment mechanism ensures the adjustment of the opening degree.

[0015] The utility model is further configured that a spring is arranged on the adjusting rod, and two ends of the spring respectively abut against the one-way disc and the threaded sleeve, and the design of the spring ensures the sealing of the one-way disc.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a concrete placing boom lifting device, which has the following beneficial effects:

[0018] 1. The lubrication mechanism can effectively reduce the friction between the fixed sleeve, the rotating shaft and the hydraulic cylinder, thereby reducing wear and extending the service life of the equipment. It ensures the smooth and stable operation of these key components by injecting lubricating oil, reducing the risk of overheating and damage caused by friction.

[0019] 2. The one-way mechanism provides the ability to control the flow direction of the lubricating oil, ensuring that the lubricating oil can only flow in one direction, avoiding backflow or leakage of the oil, thereby improving the efficiency and reliability of the lubrication system.

[0020] 3. The adjustment mechanism ensures that the operator can adjust the opening of the lubricating oil outflow according to needs. This flexible adjustment capability can easily adjust the opening of the oil outlet, thereby ensuring the convenience of adjustment, ensuring the best lubrication effect, and avoiding the problem of over-lubrication or under-lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a lifting device of a concrete placing boom in the utility model;

[0022] Figure 2 It is a structural schematic diagram of the lubrication mechanism in the utility model;

[0023] Figure 3 It is a cross-sectional structural schematic diagram of the lubrication mechanism in the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the oil pipe in the utility model;

[0025] Figure 5 It is a structural schematic diagram of the transfer shaft of the utility model.

[0026] In the figure: 1. fixed seat; 2. lifting arm; 3. lifting frame; 4. hydraulic cylinder; 5. fixed sleeve; 6. rotating shaft; 7. limit plate; 8. oil pipe; 9. piston plate; 10. sealing plate; 11. middle plate; 12. oil outlet hole; 13. push rod; 14. push spring; 15. guide rod; 16. threaded disk; 17. pull disk; 18. handle; 19. one-way disk; 20. top block; 21. rotating groove; 22. hexagonal groove; 23. sealing ring; 24. adjusting rod; 25. threaded sleeve; 26. adjusting groove; 27. spring. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0030] See also Figure 1-5A lifting device of a concrete placing boom comprises a fixed seat 1, which is mounted on an external device. A lubrication mechanism is arranged on the fixed seat 1, and the lubrication mechanism comprises a lifting arm 2, a lifting frame 3, a hydraulic cylinder 4, a fixed sleeve 5, a rotating shaft 6, a limit plate 7, a one-way mechanism, an adjusting mechanism, an oil pipe 8, a piston plate 9, a sealing plate 10 and an intermediate plate 11. The lifting arm 2 is rotatably connected to the fixed seat 1 and the lifting frame 3, the fixed sleeve 5 is respectively fixedly mounted on the fixed seat 1 and the lifting arm 2, the rotating shaft 6 is respectively rotatably connected to the hydraulic cylinder 4 and the fixed sleeve 5, the limit plate 7 is mounted on the rotating shaft 6, and the limit plate 7 is fitted on the On the side of the fixed sleeve 5, the one-way mechanism and the adjustment mechanism are respectively installed in the rotating shaft 6, the oil pipe 8 is sleeved on the rotating shaft 6, the piston plate 9 is slidably connected in the oil pipe 8, the intermediate plate 11 is installed on the oil pipe 8, the sealing plate 10 is attached to the intermediate plate 11, a plurality of oil outlet holes 12 are opened on the rotating shaft 6, a push rod 13 is provided on the sealing plate 10, a push spring 14 is provided on the push rod 13, the piston plate 9 is slidably connected to the push spring 14, a plurality of guide rods 15 are provided on the piston plate 9, a threaded disk 16 is threadedly provided on the oil pipe 8, a plurality of guide rods 15 slide through the threaded disk 16 respectively, and the push spring 14 presses on the threaded disk 16. A pull plate 17 is provided on multiple guide rods 15, and a handle 18 is provided on the pull plate 17. The one-way mechanism includes a one-way plate 19 and a top block 20. The one-way plate 19 is sealed and installed on the limit plate 7. A rotating groove 21 is opened on the one-way plate 19. A hexagonal groove 22 is opened on the sealing plate 10. Top blocks 20 are respectively installed in the rotating groove 21 and the hexagonal groove 22. The two top blocks 20 are in conflict with each other. A sealing ring 23 is coaxially provided on the middle plate 11, and the sealing ring 23 is pressed against the rotating shaft 6.

[0031] In this embodiment, when the concrete placing boom is lifted or lowered, the lifting arm 2 is driven by the hydraulic cylinder 4, thereby driving the lifting frame 3 to lift or lower. The concrete placing boom is installed on the lifting frame 3, thereby completing the lifting process. When lubrication is needed, first, the piston plate 9 is pulled to the position closest to the threaded disk 16, and then the sealing disk 10 is pushed open, and lubricating oil is injected. Then, the oil pipe 8 is sleeved on the rotating shaft 6, so that the two top blocks 20 are in contact with each other, thereby releasing the seal of the sealing disk 10 and the one-way disk 19, so that the oil pipe 8 is connected to the rotating shaft 6, and then the guide rod 15 is pushed by the handle 18 so that the piston plate 9 pushes the lubricating oil to flow into the rotating shaft 6, and then flows out through the oil outlet 12, thereby completing the lubrication process.

[0032] See also Figure 5 As an implementation method of a concrete placing boom lifting device for an adjustment mechanism: the adjustment mechanism includes an adjustment rod 24 and a threaded sleeve 25, the threaded sleeve 25 is threadedly connected in the rotating shaft 6, the adjustment rod 24 is installed on the one-way disk 19, the threaded sleeve 25 is provided with an adjustment groove 26, the adjustment rod 24 is clamped in the adjustment groove 26, and a spring 27 is provided on the adjustment rod 24 for adjustment, and the two ends of the spring 27 respectively abut against the one-way disk 19 and the threaded sleeve 25.

[0033] More specifically, when it is necessary to adjust the size of the one-way disk 19 being unlocked, it is first inserted into the rotating groove 21 through external equipment, and then the adjusting rod 24 is driven to rotate. Since the adjusting rod 24 is clamped on the adjusting groove 26, the threaded sleeve 25 can be driven to rotate in the rotating shaft 6, so that the initial compression amount of the spring 27 can be adjusted, thereby changing the initial strength of the seal. Since the one-way disk 19 and the sealing disk 10 are in conflict with each other, the size of the seal unlocking of the two is determined by the elastic force of the spring 27 and the push spring 14. When the compression amount of the spring 27 is adjusted, the opening of the one-way disk 19 can be changed, thereby adjusting the size of the opening, and then adjusting the speed of oil inlet.

[0034] In summary, when the overall equipment is in use or running: when the concrete placing boom is lifted or lowered, the lifting arm 2 is driven by the hydraulic cylinder 4, thereby driving the lifting frame 3 to lift or lower, and the concrete placing boom is installed on the lifting frame 3, thereby completing the lifting process. When lubrication is needed, first pull the piston plate 9 to the position closest to the threaded disk 16, then push open the sealing disk 10, inject lubricating oil, and then sleeve the oil pipe 8 on the rotating shaft 6, so that the two top blocks 20 contact each other, thereby releasing the seal of the sealing disk 10 and the one-way disk 19, so that the oil pipe 8 and the rotating shaft 6 are connected, and then push the guide rod 15 through the handle 18 so that the piston plate 9 pushes the lubricating oil into the rotating shaft 6, and then flows out through the oil outlet 12, thereby completing the lubrication process.

[0035] When it is necessary to adjust the size of the one-way disk 19 being unlocked, first insert it into the rotating groove 21 through external equipment, and then drive the rotation of the adjusting rod 24. Since the adjusting rod 24 is clamped on the adjusting groove 26, it can drive the threaded sleeve 25 to rotate in the rotating shaft 6, so that the initial compression amount of the spring 27 can be adjusted, thereby changing the initial strength of the seal. Since the one-way disk 19 and the sealing disk 10 are in conflict with each other, the elastic force of the spring 27 and the push spring 14 determines the size of the seal unlocking of the two. When the compression amount of the spring 27 is adjusted, the opening of the one-way disk 19 can be changed, thereby adjusting the size of the opening, and then adjusting the speed of oil inlet.

[0036] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A lifting device for a concrete placing boom, comprising a fixing base (1), the fixing base (1) being mounted on an external device, and characterized in that: The fixed seat (1) is provided with a lubricating mechanism, and the lubricating mechanism comprises a lifting arm (2), a lifting frame (3), a hydraulic cylinder (4), a fixing sleeve (5), a rotating shaft (6), a limiting plate (7), a one-way mechanism, an adjusting mechanism, an oil pipe (8), a piston plate (9), a sealing plate (10) and an intermediate plate (11); the lifting arm (2) is rotatably connected to the fixed seat (1) and the lifting frame (3); the fixing sleeve (5) is respectively fixedly mounted on the fixed seat (1) and the lifting arm (2); and the rotating shaft (6) is respectively The invention is rotatably connected to the hydraulic cylinder (4) and the fixed sleeve (5); the limit plate (7) is mounted on the rotating shaft (6), and the limit plate (7) is fitted on the side of the fixed sleeve (5); the one-way mechanism and the adjustment mechanism are respectively mounted in the rotating shaft (6); the oil pipe (8) is sleeved on the rotating shaft (6); the piston plate (9) is slidably connected in the oil pipe (8); the intermediate plate (11) is mounted on the oil pipe (8); the sealing plate (10) is fitted on the intermediate plate (11); and a plurality of oil outlet holes (12) are provided on the rotating shaft (6).

2. A concrete placing boom lifting device according to claim 1, characterized in that: The sealing disk (10) is provided with a push rod (13), the push rod (13) is provided with a push spring (14), and the piston plate (9) is slidably connected to the push spring (14).

3. The concrete placing boom lifting device according to claim 2, characterized in that: The piston plate (9) is provided with a plurality of guide rods (15), the oil pipe (8) is threadedly provided with a threaded disk (16), the plurality of guide rods (15) respectively slide through the threaded disk (16), and the push spring (14) is pressed against the threaded disk (16).

4. The concrete placing boom lifting device according to claim 3, characterized in that: A pull plate (17) is provided on the plurality of guide rods (15), and a handle (18) is provided on the pull plate (17).

5. The concrete placing boom lifting device according to claim 1, characterized in that: The one-way mechanism comprises a one-way disc (19) and a top block (20); the one-way disc (19) is sealed and mounted on the limit disc (7); a rotation groove (21) is provided on the one-way disc (19); a hexagonal groove (22) is provided on the sealing disc (10); top blocks (20) are respectively mounted in the rotation groove (21) and the hexagonal groove (22); the two top blocks (20) are in contact with each other.

6. The concrete placing boom lifting device according to claim 5, characterized in that: A sealing ring (23) is coaxially arranged on the middle plate (11), and the sealing ring (23) is pressed against the rotating shaft (6).

7. The concrete placing boom lifting device according to claim 6, characterized in that: The adjusting mechanism comprises an adjusting rod (24) and a threaded sleeve (25), wherein the threaded sleeve (25) is threadedly connected in the rotating shaft (6), the adjusting rod (24) is mounted on the one-way disk (19), an adjusting groove (26) is formed on the threaded sleeve (25), and the adjusting rod (24) is clamped in the adjusting groove (26).

8. The concrete placing boom lifting device according to claim 7, characterized in that: The adjusting rod (24) is provided with a spring (27) for adjustment, and two ends of the spring (27) respectively contact the one-way disc (19) and the threaded sleeve (25).

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