Self-balancing damping lifting device

Abstract

The utility model discloses a self-balancing damping lifting device which comprises a first connecting seat, a second connecting seat and a third connecting seat which are connected in sequence, the first connecting seat is connected with the second connecting seat through a pin shaft, and elastic buffering assemblies which are symmetrically arranged are arranged between the second connecting seat and the third connecting seat. Each group of elastic buffer assembly comprises a vertical shaft, spring seats are fixed at the upper end and the lower end of the vertical shaft, at least two vertical shafts are arranged along two diagonal lines of the spring seats, compression springs are sleeved on the vertical shafts, the vertical shaft on one diagonal line is provided with an upward connecting end, the vertical shaft on the other diagonal line is provided with a downward connecting end, and the vertical shaft on the other diagonal line is provided with a horizontal connecting end. The vertical shafts on the two diagonal lines are connected with the second connecting base through the upward connecting ends and connected with the third connecting base through the downward connecting ends respectively. The device can reduce the shaking amount of the whole machine when the hydraulic striking hammer vibrates at high frequency to draw the pipe, and ensures the stability of the main machine.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical equipment technology and relates to a self-balancing shock-absorbing lifting device, which is particularly suitable for lifting and shock absorption in the high-frequency vibration pipe pulling method of hydraulic hammer. Background Technology

[0002] The geological conditions of a certain project are complex, with the strata mainly composed of sand, hard clay and silty sand (SPT-N value between 2 and 60). The driven pipe grouting pile technology is required, with a designed pile diameter of 500mm and a pile depth of 10-28m. Traditional diesel pile hammers cause serious noise pollution and are not environmentally friendly. The conventional hydraulic hammer driven pipe combined with vibratory hammer pipe pulling process requires two sets of equipment to work together, resulting in low construction efficiency and increased costs. In order to overcome the technical bottleneck, the project pioneered a composite construction method of tracked pile frame integrated hydraulic hammer. The following functions are achieved through the same hydraulic hammer: (1) using the impact force of the hydraulic hammer to penetrate hard strata; (2) reducing the frictional resistance between the pile pipe and the strata through the high-frequency vibration of the hydraulic hammer, solving the problem of difficult pipe pulling caused by excessive frictional resistance in deep pile construction. However, it was found in the construction process that the high-frequency vibration of the hydraulic hammer when pulling the pipe has a large impact, resulting in violent shaking of the main unit, poor stability, and poor service life of related components. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a self-balancing shock-absorbing lifting device, which solves the problems of large impact during high-frequency vibration of hydraulic hammers when pulling tubes, resulting in severe shaking of the main unit, poor stability, and short service life of related components.

[0004] The technical solution provided by this utility model is as follows:

[0005] This utility model provides a self-balancing shock absorption lifting device, including a first connecting seat, a second connecting seat, and a third connecting seat connected in sequence. The first connecting seat and the second connecting seat are connected by a pin. The second connecting seat and the third connecting seat are provided with symmetrically arranged elastic buffer components. Each set of elastic buffer components includes a vertical shaft with a spring seat fixed at its upper and lower ends. The vertical shafts are arranged along two diagonals of the spring seats and there are at least two of them. A compression spring is sleeved on the vertical shaft. One diagonal vertical shaft has an upward connecting end, and the other diagonal vertical shaft has a downward connecting end. The two diagonal vertical shafts are connected to the second connecting seat through the upward connecting end and to the third connecting seat through the downward connecting end, respectively.

[0006] Furthermore, the second connecting seat includes a second base plate and ear plates located below the four corners of the second base plate. Two elastic buffer components are respectively fixed to the ear plates on the same short side. The ear plates are provided with through holes, and the upward connecting end is provided with a through hole corresponding to the through hole. The upward connecting end is located on the outside of the ear plate. A first horizontal shaft passes through the through hole and the through hole. One end of the first horizontal shaft has a shaft head with a diameter larger than the through hole and the through hole. The other end of the first horizontal shaft is locked and fixed to the upward connecting end by a first locking member.

[0007] Furthermore, two parallel vertical plates are provided above the second base plate along its long side. The vertical plates have pin holes. The first connecting seat includes a first base plate and two vertical plates arranged downward and inward along the long side of the first base plate. The vertical plates have through holes corresponding to the pin holes. The vertical plates are located outside the vertical plates. A pin is inserted into the pin hole and the through hole. One end of the pin has a shaft head with a diameter larger than the pin hole and the through hole. The other end of the pin is locked and fixed to the vertical plate by a second locking member.

[0008] Furthermore, the third connecting seat includes a third base plate, and two upper ear seats are provided above the third base plate along the short side of the third base plate. The upper ear seats are provided with through holes, and the downward connecting end is provided with a through hole corresponding to the through hole. The downward connecting end is located outside the upper ear seats. A second horizontal shaft is inserted through the upper ear seats and the through hole. One end of the second horizontal shaft has a shaft head with a diameter larger than the through hole and the through hole. The other end of the second horizontal shaft is locked and fixed to the downward connecting end by a third locking member.

[0009] Furthermore, two spaced fixing plates are provided above the first base plate along the short side of the first base plate, and a support shaft is fixed between the inner surfaces of the two fixing plates, with a hanging pulley on the support shaft.

[0010] Furthermore, four parallel lower lugs are provided along the long side of the third base plate below the third base plate. The lower lugs are provided with bolt mounting holes that are evenly distributed. The four lower lugs are symmetrically arranged in two groups on both sides of the long side of the third base plate. The bolt mounting holes of each group of lower lugs are aligned with each other, so as to form a detachable connection with the hammer body flange of the hydraulic hammer.

[0011] Furthermore, elastic baffles are provided between the upward connecting end and the first locking member, between the upright plate and the second locking member, and between the downward connecting end and the third locking member.

[0012] Furthermore, the first locking member, the second locking member, and the third locking member include a cotter nut and a cotter pin. The tail of the first horizontal shaft, the second horizontal shaft, and the pin shaft are provided with a horizontal hole. The cotter pin is inserted into the slot and horizontal hole of the cotter nut and is made to fit tightly against the surface of the slotted nut by prying open the two feet of the cotter pin.

[0013] Furthermore, the spring seat has two pairs of mounting slots and mounting holes in the mounting slots. The spring seat also has several mounting slots along two diagonals and mounting holes in the mounting slots. The other end of the set of vertical shafts with upward connecting ends and the other end of the set of vertical shafts with downward connecting ends are locked and fixed to the spring seat by slotted nuts and cotter pins. The two ends of the compression spring are in contact with the inner bottom surface of the mounting slot.

[0014] Beneficial effects

[0015] This utility model has two sets of elastic buffer components connected by an elastic connection. During construction, it can effectively protect the main structural components. It can automatically balance the force of the two sets of shock-absorbing springs through the lever principle, ensuring that the force of the two sets of springs is uniform. This device can reduce the shaking of the whole machine when the hydraulic hammer vibrates and pulls the tube, thus ensuring the stability of the main machine.

[0016] This utility model has a simple structure, is easy to process, and is quick to replace; it is particularly suitable for use in the high-frequency vibration tube pulling of hydraulic hammers in engineering machinery, where it can play a shock absorption role and improve the overall stability of the engineering machinery. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a self-balancing shock-absorbing lifting device according to this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of a self-balancing shock-absorbing lifting device according to this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of an elastic buffer component of a self-balancing shock absorption and lifting device according to this utility model;

[0020] Figure 4 This is a top view of a self-balancing shock-absorbing lifting device according to this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. First connecting seat; 1-1. First base plate; 1-2. Fixing plate; 1-3. Vertical plate; 2. Pin; 3. Second connecting seat; 3-1. Second base plate; 3-2. Vertical plate; 3-3. Ear plate; 4-1. First horizontal shaft; 4-2. Second horizontal shaft; 5. Spring seat; 6. Compression spring; 7. Vertical shaft; 8. Third connecting seat; 8-1. Third base plate; 8-2. Upper ear seat; 8-3. Lower ear seat. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1

[0026] This utility model embodiment provides a self-balancing shock absorption lifting device, including a first connecting seat 1, a second connecting seat 3, and a third connecting seat 8 connected in sequence. The first connecting seat 1 and the second connecting seat 3 are connected by a pin. The second connecting seat 3 and the third connecting seat 8 are provided with symmetrically arranged elastic buffer components. Each set of elastic buffer components includes a vertical shaft 7 with a spring seat 5 fixed at its upper and lower ends. The vertical shaft 7 is arranged along two diagonals of the spring seat 5 and at least two are provided. A compression spring 6 is sleeved on the vertical shaft 7. The vertical shaft 7 on one diagonal has an upward connecting end, and the vertical shaft 7 on the other diagonal has a downward connecting end. The two vertical shafts 7 on the two diagonals are connected to the second connecting seat 3 through the upward connecting end and to the third connecting seat 8 through the downward connecting end, respectively.

[0027] The symmetrical arrangement of the elastic buffer components in this invention provides a balanced shock absorption effect, avoiding excessive force on one side. The symmetrically arranged elastic buffer components form a bidirectional shock absorption mechanism through the cooperation of the vertical axis (distributed on two diagonals) and the compression spring. When the hydraulic hammer vibrates at high frequency to pull the tube, it will generate an impact force. After being balanced, the impact force is evenly applied to the third connecting seat and then transmitted to the compression spring. The compression spring absorbs the impact force and plays a buffering role, thereby protecting the main structural components and ensuring the stability of the whole machine.

[0028] Example 2

[0029] This utility model embodiment provides a self-balancing shock-absorbing lifting device, including a first connecting seat 1, a second connecting seat 3, a spring seat 5, a compression spring 6, a vertical shaft 7, and a third connecting seat 8. Specifically, the first connecting seat 1 is connected to a pulley on which a steel wire rope is wound, and the third connecting seat 8 is connected to a hydraulic hammer. The first connecting seat 1 and the second connecting seat 3 are connected by a pin. Symmetrically arranged elastic buffer components are provided between the second connecting seat 3 and the third connecting seat 8. In this embodiment, each set of elastic buffer components has four vertical shafts 7 with their upper and lower ends fixed to the spring seat 5, of which two vertical shafts 7 are distributed on the spring seat 5. Two vertical shafts 7 are distributed at the two ends of one diagonal of the spring seat 5, and the other two vertical shafts 7 are distributed at the two ends of the other diagonal of the spring seat 7. The compression spring 6 is placed between the two spring seats 5, and the vertical shafts 7 pass through the compression spring 6. The two spring seats 5 slide up and down as the compression amount of the compression spring 6 changes. Among the four vertical shafts 7, the two vertical shafts 7 located on one diagonal have upward connecting ends, and the two vertical shafts 7 located on the other diagonal have downward connecting ends. The vertical shafts 7 with upward connecting ends are connected to the second connecting seat 3, and the vertical shafts 7 with downward connecting ends are connected to the third connecting seat 8.

[0030] In this embodiment, the second connecting seat 3 includes a second base plate 3-1 and ear plates 3-3 located below the four corners of the second base plate. Two elastic buffer components are respectively fixed on the ear plates 3-3 on the same short side. The ear plates 3-3 are provided with through holes. The upward connecting end is provided with a through hole corresponding to the through hole. The upward connecting end is located on the outside of the ear plates 3-3. A first horizontal shaft 4-1 is inserted through the through hole and the through hole. One end of the first horizontal shaft 4-1 has a shaft head with a diameter larger than the through hole and the through hole. The other end of the first horizontal shaft 4-1 is locked and fixed to the upward connecting end by a first locking member.

[0031] In this embodiment, two parallel vertical plates 3-2 are provided above the second base plate 3-1 along its long side. Each vertical plate 3-2 has a pin hole. The first connecting seat 1 includes a first base plate 1-1 and two vertical plates 1-3 arranged downwards and inwards along the long side of the first base plate 1-1. Each vertical plate 1-3 has a through hole corresponding to the pin hole. The vertical plates 3-2 are located outside the vertical plates 1-3. A pin 2 passes through the pin hole and the through hole. One end of the pin 2 has a shaft head with a diameter larger than the pin hole and the through hole. The other end of the pin 2 is locked and fixed to the upward connecting end by a second locking member. The first connecting seat 1 and the second connecting seat 3 are connected by a pin. The pin allows the second connecting seat to swing freely around the pin, adapting to dynamic loads in different directions.

[0032] In this embodiment, the third connecting seat 8 includes a third base plate 8-1. Two upper ear seats 8-2 are provided above the third base plate 8-1 along the short side of the third base plate 8-1. The upper ear seats 8-2 are provided with through holes. The downward connecting end is provided with a through hole corresponding to the through hole. The downward connecting end is located outside the upper ear seats 8-2. A second horizontal shaft 4-2 is inserted through the upper ear seats 8-2 and the through hole. One end of the second horizontal shaft 4-2 has a shaft head with a diameter larger than the through hole and the through hole. The other end of the second horizontal shaft 4-2 is locked and fixed to the upward connecting end by a third locking member.

[0033] In this embodiment, two spaced fixing plates 1-2 are provided above the first base plate 1-1 along the short side of the first base plate 1-1. A support shaft is fixed between the inner surfaces of the two fixing plates 1-2, and a hanging pulley is provided on the support shaft.

[0034] In this embodiment, four parallel lower ear seats 8-3 are provided below the third base plate 8-1 along the long side of the third base plate. The lower ear seats 8-3 are provided with bolt mounting holes that are evenly distributed. The four lower ear seats 8-3 are arranged in two groups symmetrically on both sides of the long side of the third base plate 8-1. The bolt mounting holes of each group of lower ear seats 8-3 have the same axis, which is used to form a detachable connection with the hammer body flange of the hydraulic hammer.

[0035] In this embodiment, elastic baffles are provided between the upward connecting end and the first locking member, between the upright plate and the second locking member, and between the downward connecting end and the third locking member.

[0036] In this embodiment, the first locking member, the second locking member, and the third locking member include a cotter nut and a cotter pin. The tail of the first horizontal shaft 4-1, the second horizontal shaft 4-2, and the pin 2 are provided with horizontal holes. The cotter pin is inserted into the slot and horizontal hole of the cotter nut and is made to fit tightly against the surface of the slotted nut by prying open the two feet of the cotter pin.

[0037] In this embodiment, the spring seat 5 has several mounting slots along two diagonals and mounting holes in the mounting slots. Specifically, there are four mounting slots. The vertical shaft 7 extends out of the mounting holes. The other end of one set of vertical shafts 7 with an upward connecting end and the other end of one set of vertical shafts 7 with a downward connecting end are locked and fixed to the spring seat 5 by slotted nuts and cotter pins. The two ends of the compression spring 6 are in contact with the inner bottom surface of the mounting slot.

[0038] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this utility model. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of this utility model without departing from the scope of the technical solution of this utility model shall fall within the protection scope of this technical solution.

Claims

1. A self-balancing vibration damping lifting device, characterized in that, The device includes a first connecting seat, a second connecting seat, and a third connecting seat connected in sequence. The first connecting seat and the second connecting seat are connected by a pin. A symmetrically arranged elastic buffer assembly is provided between the second connecting seat and the third connecting seat. Each elastic buffer assembly includes a vertical shaft with a spring seat fixed at its upper and lower ends. The vertical shafts are arranged along two diagonals of the spring seat and there are at least two of them. A compression spring is sleeved on the vertical shaft. One vertical shaft on one diagonal has an upward connecting end, and the other vertical shaft on the other diagonal has a downward connecting end. The two vertical shafts on the two diagonals are connected to the second connecting seat through the upward connecting end and to the third connecting seat through the downward connecting end, respectively.

2. The self-balancing vibration damping lifting device according to claim 1, characterized in that, The second connecting seat includes a second base plate and ear plates located below the four corners of the second base plate. Two elastic buffer components are respectively fixed to the ear plates on the same short side. The ear plates are provided with through holes. The upward connecting end is provided with a through hole corresponding to the through hole. The upward connecting end is located on the outside of the ear plate. A first horizontal shaft passes through the through hole and the through hole. One end of the first horizontal shaft has a shaft head with a diameter larger than the through hole and the through hole. The other end of the first horizontal shaft is locked and fixed to the upward connecting end by a first locking member.

3. The self-balancing vibration damping lifting device according to claim 2, characterized in that, Above the second base plate, two parallel vertical plates are provided along the long side of the second base plate. The vertical plates have pin holes. The first connecting seat includes a first base plate and two vertical plates arranged downward and inward along the long side of the first base plate. The vertical plates have through holes corresponding to the pin holes. The vertical plates are located outside the vertical plates. A pin is inserted into the pin hole and the through hole. One end of the pin has a shaft head with a diameter larger than the pin hole and the through hole. The other end of the pin is locked and fixed to the vertical plate by a second locking member.

4. The self-balancing vibration damping lifting device according to claim 3, characterized in that, The third connecting seat includes a third base plate. Two upper ear seats are provided above the third base plate along the short side of the third base plate. The upper ear seats are provided with through holes. The downward connecting end is provided with a through hole corresponding to the through hole. The downward connecting end is located outside the upper ear seats. A second horizontal shaft is inserted into the upper ear seats and the through hole. One end of the second horizontal shaft has a shaft head with a diameter larger than the through hole and the through hole. The other end of the second horizontal shaft is locked and fixed to the downward connecting end by a third locking member.

5. The self-balancing vibration damping lifting device according to claim 3, characterized in that, Two spaced fixing plates are provided above the first base plate along the short side of the first base plate. A support shaft is fixed between the inner surfaces of the two fixing plates, and a hanging pulley is provided on the support shaft.

6. The self-balancing vibration damping lifting device according to claim 4, characterized in that, Four parallel lower lugs are provided along the long side of the third base plate. The lower lugs have equally spaced bolt mounting holes. The four lower lugs are arranged symmetrically in two groups on both sides of the long side of the third base plate. The bolt mounting holes of each group of lower lugs coincide with each other, so as to form a detachable connection with the hammer body flange of the hydraulic hammer.

7. The self-balancing vibration damping lifting device according to claim 4, characterized in that, Elastic baffles are provided between the upward connecting end and the first locking member, between the upright plate and the second locking member, and between the downward connecting end and the third locking member.

8. The self-balancing vibration damping lifting device according to claim 7, characterized in that, The first locking member, the second locking member, and the third locking member include a cotter nut and a cotter pin. The tail of the first horizontal shaft, the second horizontal shaft, and the pin shaft are provided with a horizontal hole. The cotter pin is inserted into the slot and horizontal hole of the cotter nut and is made to fit tightly against the surface of the slotted nut by prying open the two feet of the cotter pin.

9. The self-balancing vibration damping lifting device according to claim 1, characterized in that, The spring seat has several mounting slots along two diagonals and mounting holes in the mounting slots. The vertical shaft extends out of the mounting holes. The other end of one set of vertical shafts with an upward connecting end and the other end of one set of vertical shafts with a downward connecting end are locked and fixed to the spring seat by slotted nuts and cotter pins. The two ends of the compression spring abut against the inner bottom surface of the mounting slot.

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