Fabricated lifting appliance for lifting steel cylinder vibratory hammer group

Abstract

The utility model discloses an assembly type lifting appliance for lifting a steel cylinder vibratory hammer group, relates to the field of steel cylinder vibration sinking, and aims to solve the problems of uneven stress and insufficient stability of a lifting frame caused by the influence of rigidity and external factors of the traditional vibratory hammer group lifting appliance. A supporting rod and a plurality of chains are fixedly connected to the lower end of the hanging bracket, the chains surround the supporting rod at equal angles, a bearing table is fixedly connected to the lower ends of the chains, a vibratory hammer set is arranged at the lower end of the bearing table, a plurality of dampers are arranged between the bearing table and the supporting rod, and the bearing table is of an annular structure. The device has the advantages that stress is dispersed through a plurality of chains, so that position errors of a lifting point caused by rigid deformation are avoided, the wind load resistance is improved, and the pile sinking precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of steel cylinder vibration sinking, in particular to an assembled sling for hoisting a steel cylinder vibration hammer group. Background Art

[0002] The steel cylinder vibration hammer group is a key construction equipment in the fields of ocean engineering, bridge pile foundations, and deep foundation pit support. It sinks the steel cylinder into the formation through high-frequency vibration. In large projects, dozens of vibration hammer groups need to be installed synchronously in a single hoisting, covering an operation range with a diameter of dozens of meters (for example, the diameter of a single pile for offshore wind power can reach 10 - 30 meters). The core difficulty of such hoisting operations lies in: how to ensure uniform force on each vibration hammer group and maintain overall stability in the ultra-large span and multi-hoisting point collaborative operations, so as to avoid equipment damage or installation deviation caused by local overload.

[0003] Traditional hoisting schemes mostly adopt rigid truss slings. Affected by the structural deformation of the rigid sling itself and the position error of the hoisting points, the load deviation of each vibration hammer group can reach 15% - 25% (measured data), which is likely to cause fracture of local connecting parts or asynchronous vibration; in addition, under dynamic interferences such as wind load, waves, or the swing of the crane, it will cause the axis of the hammer group to deviate from the designed position of the steel cylinder, resulting in a decrease in the pile sinking accuracy. Content of the Utility Model

[0004] In view of the above situation, to overcome the defects of the prior art, the utility model provides an assembled sling for hoisting a steel cylinder vibration hammer group, which effectively solves the problems of uneven force and insufficient stability of the traditional vibration hammer group sling due to its own rigidity and external factors.

[0005] To achieve the above object, the utility model provides the following technical solutions: The utility model includes a suspension beam, on which a suspension frame is slidably connected. The lower end of the suspension frame is fixedly connected with a support rod and a plurality of chains. The plurality of chains are circumferentially arranged around the support rod at equal angles. The lower end of the chain is fixedly connected with a bearing platform, and a vibration hammer group is arranged at the lower end of the bearing platform. A plurality of groups of dampers are arranged between the bearing platform and the support rod. The bearing platform is of an annular structure, and the plurality of groups of dampers are equally angularly distributed inside the bearing platform.

[0006] Preferably, the damper includes a first support rod fixedly connected with the support rod. A damper rod is slidably connected inside the first support rod. A first spring is installed between the damper rod and the first support rod. The other end of the damper rod is slidably connected with a second support rod, and a second spring is installed between the damper rod and the second support rod.

[0007] Preferably, sling ropes are fixedly connected to both ends of the hanging beam. A slideway is provided on the hanging beam, and the hanging frame is installed in the slideway. Telescopic rods are provided on both sides of the hanging frame, and the other ends of the two groups of telescopic rods are hinged to the hanging beam.

[0008] Preferably, the hanging frame includes a lower end beam and an upper end beam. A guide rod is slidably connected between the lower end beam and the upper end beam. A shock-absorbing spring is sleeved on the guide rod, and the shock-absorbing spring is located between the upper end beam and the lower end beam.

[0009] Preferably, the lower end beam is fixedly connected to the support rod. Hooks are fixedly connected to both the lower end beam and the bearing platform, and the chain is installed on the hooks.

[0010] Preferably, balance ropes are rotatably connected to both ends of the bearing platform. The other ends of the balance ropes are fixedly connected to connection blocks, and the connection blocks are rotatably connected to hanging wheels. A chute for the vertical movement of the hanging wheels is provided at the end of the hanging beam.

[0011] Preferably, sliders are rotatably connected to both ends of the hanging wheel. The sliders are slidably connected in the chute. A lifting rope is wound around the hanging wheel, and a guide hole for the lifting rope to pass through is provided at the upper end of the hanging beam.

[0012] Compared with the prior art, the outstanding advantages of the present utility model are as follows:

[0013] In the present utility model, the bearing platform and the hanging frame are connected by a chain, which avoids the skew of the bearing platform caused by structural deformation, ensures that the forces on each point of the steel cylinder by each vibrating hammer group are the same, and ensures that the steel cylinder is uniformly stressed downward.

[0014] In the present utility model, a damping member is installed between the bearing platform and the support rod. When affected by external factors such as wind load, the damping member can improve the stability of the bearing platform, reduce the sway of the bearing platform, and thus improve the pile driving accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present utility model.

[0016] Figure 2 It is a schematic diagram of the connection structure of the hanging frame of the present utility model.

[0017] Figure 3 It is a schematic diagram of the connection structure of the bearing platform of the present utility model.

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the damper of the present utility model.

[0019] Figure 5 It is a schematic diagram of the overall structure of Embodiment 2 of the present utility model.

[0020] Figure 6This is a schematic diagram of the forward structure of the bearing platform of the present utility model.

[0021] Figure 7 For the present utility model Figure 5 A magnified structural schematic diagram of A in it.

[0022] Reference numerals in the figure: 1, suspension beam; 2, hanger; 201, lower end beam; 202, upper end beam; 203, guide rod; 204, shock-absorbing spring; 3, support rod; 4, chain; 5, damper; 501, first support rod; 502, damper rod; 503, first spring; 504, second support rod; 505, second spring; 6, sling; 7, slideway; 8, hook; 9, balance rope; 10, pulley; 11, chute; 12, slider; 13, lifting rope; 14, connecting block; 15, bearing platform; 16, telescopic rod. Specific embodiments

[0023] Next, in combination with the drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0024] Embodiment 1

[0025] Please refer to the attached Figures 1-4 , an assembled sling for hoisting a steel cylinder vibratory hammer set in this embodiment: including a suspension beam 1, a hanger 2 is slidably connected to the suspension beam 1, a support rod 3 and a plurality of chains 4 are fixedly connected to the lower end of the hanger 2, and the plurality of chains 4 are circumferentially arranged around the support rod 3 at equal angles. The lower end of the chain 4 is fixedly connected to a bearing platform 15, a vibratory hammer set is arranged at the lower end of the bearing platform 15, and a plurality of groups of dampers 5 are arranged between the bearing platform 15 and the support rod 3. The bearing platform 15 is a ring structure, and the plurality of groups of dampers 5 are distributed at equal angles inside the bearing platform 15.

[0026] The suspension beam 1 is used to support the suspension bracket 2 and connect the jib. Four groups of suspension ropes 6 are installed at the four corners of the suspension beam 1. Each of the four groups of suspension ropes 6 is provided with a rope group, and the other end of the rope group is installed on the jib. The lifting and lowering of the suspension beam 1 are controlled by the retraction and extension of the rope group. The four groups of suspension ropes 6 achieve synchronous lifting of the four corners of the suspension beam 1 through the rope group, so as to improve the stability of the suspension beam 1 during the lifting and lowering process and ensure the smooth lifting and lowering of the suspension beam 1. The suspension bracket 2 is located in the middle of the suspension beam 1, and the suspension beam 1 plays a supporting role for the suspension bracket 2. The lower end of the suspension bracket 2 is connected to the bearing platform 15 through a chain 4. A vibration hammer group is installed on the bearing platform 15. The bearing platform 15 is the main bearing component of the vibration hammer group. Multiple vibration hammer groups are installed on the bearing platform 15. The bearing platform 15 is responsible for bearing the weight and vibration of the vibration hammer. The damper 5 between the bearing platform 15 and the support rod 3 is used to prevent the swing of the bearing platform 15. When the bearing platform 15 swings, the damper 5 provides a reverse acting force for the bearing platform 15, so as to avoid the swing of the bearing platform 15 and prevent the axis of the hammer group from deviating from the designed position of the steel cylinder, ensuring the pile driving accuracy. The vibration hammer group is widely used in current life and belongs to very mature prior art. The chain 4 is a commonly used chain structure in life.

[0027] The first support rod 501 and the second support rod 504 in the damper 5 are sleeved on the outer end of the damper rod 502, and the first support rod 501 and the second support rod 504 are distributed on the left and right sides of the damper rod 502. Both the bearing platform 15 and the support rod 3 are circular in cross-section. Multiple groups of dampers 5 are evenly distributed around the support rod 3. The number of dampers 5 is even, so that there is another damper 5 at a place 180 degrees away from one damper 5, which can provide a better damping effect on the bearing platform 15. A first spring 503 is installed in the inner cavity of the first support rod 501, and a second spring 505 is installed in the inner cavity of the second support rod 504. The elastic forces of the first spring 503 and the second spring 505 on the damper rod 502 are opposite, so that no matter which direction the damper rod 502 is subjected to force, there is a corresponding elastic force to offset it, ensuring the anti-swing performance of the damper 5 on the bearing platform 15.

[0028] A slideway 7 is provided in the middle of the suspension beam 1. An electromagnetic slide rail is installed in the slideway 7. The suspension bracket 2 is installed on the slide rail of the slideway 7. There are two telescopic rods 16 on both the left and right sides of the suspension bracket 2. The two groups of telescopic rods 16 move synchronously. The telescopic rods 16 are hydraulic telescopic rods. The movement of the suspension bracket 2 in the slideway 7 is promoted by the change in the length of the telescopic rods 16, so as to realize the fine adjustment of the bearing platform 15 and ensure the installation accuracy requirements of the bearing platform 15 for the steel cylinder in actual use. The electromagnetic slide rail can reduce the friction between the slideway 7 and the suspension bracket 2, facilitating the lateral adjustment of the suspension bracket 2. At the same time, the suspension bracket 2 can be locked in place on the electromagnetic slide rail to ensure the fixation of the position of the suspension bracket 2 after adjustment.

[0029] The suspension bracket 2 consists of an upper end beam 202 and a lower end beam 201. The lower end beam 201 is located below the suspension beam 1, and the upper end beam 202 is located above the suspension beam 1. The upper end beam 202 and the lower end beam 201 are connected by bolts, and they are detachably connected. There are guide rods 203 at the front and rear ends of the upper end beam 202 and the lower end beam 201. A shock-absorbing spring 204 is installed on the guide rod 203 in the middle of the upper end beam 202 and the lower end beam 201. When the vibratory hammer group works, there will be high-frequency vibrations. These vibrations will be transmitted to the support rod 3 and the suspension bracket 2 through the bearing platform 15. The shock-absorbing spring 204 is used to absorb the vertical vibrations, avoiding large vertical vibrations on the suspension bracket 2 and the suspension beam 1, and ensuring the stable support of the overall suspension beam 1 for each component.

[0030] Both ends of the chain 4 are installed on the lower end beam 201 and the bearing platform 15 through hooks 8. The links of the chain 4 are buckled on the hooks 8, and the chain 4 can move freely on the hooks 8, thus increasing the degree of freedom of the chain 4.

[0031] Embodiment 2

[0032] It has the same structure as the above embodiment. As Figures 5-7 shown, the specific difference in this embodiment is that: both ends of the bearing platform 15 are rotatably connected with balance ropes 9. The other ends of the balance ropes 9 are fixedly connected with connection blocks 14. The connection blocks 14 are rotatably connected with lifting pulleys 10. A chute 11 for the vertical movement of the lifting pulley 10 is provided at the end of the suspension beam 1. Both ends of the lifting pulley 10 are rotatably connected with sliders 12. The sliders 12 are slidably connected in the chute 11. A suspension rope 13 is wound around the lifting pulley 10. A guide hole for the suspension rope 13 to pass through is provided at the upper end of the suspension beam 1.

[0033] There are balance ropes 9 at both the left and right ends of the bearing platform 15. The left balance rope 9 extends upward to the left end of the suspension beam 1, and the right balance rope 9 extends upward to the right end of the suspension beam 1. There are vertically moving lifting pulleys 10 on both the left and right sides of the suspension beam 1. The connection blocks 14 outside the lifting pulleys 10 are fixedly connected with the balance ropes 9. When the lifting pulley 10 moves vertically, it drives the upward movement of the upper end of the balance rope 9 through the connection block 14. When the bearing platform 15 tilts left and right, an additional balancing force is provided for the bearing platform 15 through the lifting pulley 10, thereby ensuring the horizontal stability of the bearing platform 15. The lifting pulley 10 controls the lifting through the suspension rope 13. The suspension rope 13 is wound around the lifting pulley 10. Both ends of the lifting pulley 10 are installed on the suspension beam 1 through sliders 12. The chute 11 on the suspension beam 1 plays a role in vertically guiding the movement of the sliders 12, thus ensuring the stability of the acting force of the balance rope 9 on the bearing platform 15.

[0034] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An assembled lifting device for lifting a steel cylinder vibratory hammer group, characterized in that: The invention comprises a suspension beam (1), a suspension bracket (2) being slidably connected to the suspension beam (1), a support rod (3) and a plurality of chains (4) being fixedly connected to the lower end of the suspension bracket (2), the plurality of chains (4) being surrounded at equal angles around the support rod (3), a bearing platform (15) being fixedly connected to the lower end of the chain (4), a vibration hammer group being arranged at the lower end of the bearing platform (15), a plurality of groups of dampers (5) being arranged between the bearing platform (15) and the support rod (3), the bearing platform (15) being an annular structure, and the plurality of groups of dampers (5) being distributed at equal angles on the inner side of the bearing platform (15).

2. The assembled lifting device for lifting a steel cylinder vibratory hammer group according to claim 1 is characterized in that: The damper (5) comprises a first support rod (501), the first support rod (501) being fixedly connected to the support rod (3), a damping rod (502) being slidably connected inside the first support rod (501), a first spring (503) being installed between the damping rod (502) and the first support rod (501), a second support rod (504) being slidably connected to the other end of the damping rod (502), and a second spring (505) being installed between the damping rod (502) and the second support rod (504).

3. The assembled lifting device for lifting a steel cylinder vibratory hammer group according to claim 1 is characterized in that: Both ends of the suspension beam (1) are fixedly connected with suspension ropes (6); a slideway (7) is provided on the suspension beam (1); the hanger (2) is installed in the slideway (7); telescopic rods (16) are provided on both sides of the hanger (2); and the other ends of the two groups of telescopic rods (16) are hinged to the suspension beam (1).

4. The assembled lifting device for lifting a steel cylinder vibratory hammer group according to claim 1 or 3, characterized in that: The hanger (2) comprises a lower end beam (201) and an upper end beam (202), a guide rod (203) being slidably connected between the lower end beam (201) and the upper end beam (202), a shock absorbing spring (204) being sleeved on the guide rod (203), and the shock absorbing spring (204) being located between the upper end beam (202) and the lower end beam (201).

5. The assembled lifting device for lifting a steel cylinder vibratory hammer group according to claim 4, characterized in that: The lower end beam (201) is fixedly connected to the support rod (3), and a hook (8) is fixedly connected to both the lower end beam (201) and the bearing platform (15), and the chain (4) is mounted on the hook (8).

6. The assembled lifting device for lifting a steel cylinder vibratory hammer group according to claim 1, characterized in that: The two ends of the bearing platform (15) are rotatably connected to a balance rope (9), the other end of the balance rope (9) is fixedly connected to a connection block (14), the connection block (14) is rotatably connected to a hanging wheel (10), and the end of the hanging beam (1) is provided with a slide groove (11) for the hanging wheel (10) to move vertically.

7. The assembled lifting device for lifting a steel cylinder vibratory hammer group according to claim 6, characterized in that: The two ends of the hanging wheel (10) are rotatably connected to sliders (12), the sliders (12) are slidably connected in the slide groove (11), a hanging rope (13) is wrapped around the hanging wheel (10), and a guide hole for the hanging rope (13) to pass through is provided at the upper end of the hanging beam (1).

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