Comprehensive lifting device for capping beam support construction

Abstract

The invention discloses a comprehensive lifting device for capping beam support construction. The comprehensive lifting device comprises a lifting platform, a continuous jack lifting assembly and a limiting mechanism. The lifting platform comprises stand column fixing bearing beams, stand columns, bearing beams, lifting platform bearing beams and bearing beam stand columns. The whole lifting platform is detachably mounted and fixed through embedded parts; the lifting platform bearing beam is connected with the bearing beam through the bearing beam stand column, and the continuous jack lifting assemblies are detachably installed and fixed to the lifting platform bearing beam. The limiting mechanism corresponds to the continuous jack lifting assembly and is used for conducting angle fine adjustment on a continuous jack of the continuous jack lifting assembly. The comprehensive lifting device is installed and fixed through embedded parts or pier column embedded steel bars, construction in the mode of ground assembling, overall lifting and overall dismantling and lowering can be conducted on the bent cap support, the high-altitude operation time is shortened, the high-altitude falling risk of workers is reduced, and the psychological pressure on constructors is reduced; and the turnover performance is good, and the disassembly and assembly efficiency of the bent cap support can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of bridge pier cap beam construction, in particular to a comprehensive lifting device for cap beam support construction. Background Art

[0002] With the development of society, road and bridge engineering projects, as basic infrastructure projects, are an important part of the urban transportation network. Highway bridges and viaducts use bridge piers as supporting foundations, and the cap beams bear and transmit the load of the bridge superstructure. That is, during the construction process, it is necessary to set up a cap beam support on the top of the pier to cast the cap beam. In actual process applications, the construction process of large cantilever cap beam supports is also gradually improving and optimizing. In order to improve construction efficiency and reduce high-altitude operation time, the overall construction process of large cantilever cap beam supports has emerged, that is, the overall lifting, overall lowering, dismantling and operation adjustment of the large cantilever cap beam support on the ground assembly. In this construction method, the lifting and hoisting equipment of the large cantilever cap beam support has high requirements. For this reason, it is necessary to study a lifting device for the construction of the cap beam support that is suitable for application in the overall construction process of the large cantilever cap beam support, so as to facilitate the integrated lifting construction and installation of the cap beam support. Summary of the invention

[0003] In view of the above problems, the present invention provides a comprehensive lifting device for cap beam support construction, including a lifting platform, a continuous jack lifting assembly and a limiting mechanism;

[0004] The lifting platform comprises a column-fixed cushion beam, a column, a load-bearing beam, a lifting platform cushion beam and a cushion beam column; the column-fixed cushion beam, the column and the load-bearing beam constitute the main load-bearing structure of the lifting platform as a whole and can be detachably installed and fixed through embedded parts; the lifting platform cushion beam is connected to the load-bearing beam through the cushion beam column, and several groups of continuous jack lifting assemblies can be detachably installed and fixed on the lifting platform cushion beam;

[0005] The limiting mechanism is arranged corresponding to the continuous jack lifting assembly and is used for fine-tuning the angle of the continuous jack of the continuous jack lifting assembly.

[0006] As a further illustration of the present invention, a plurality of installation holes are arranged at intervals on the load-bearing beam, and the continuous jack lifting assembly is installed on the installation holes.

[0007] Furthermore, the continuous jack lifting assembly includes a guide component, a sensor assembly, an upper clamp, a lifting jack, a lower clamp, a load-bearing component and a steel rope assembly. The upper clamp and the lower clamp are arranged at both ends of the lifting jack to clamp the steel rope assembly. The load-bearing component is used as a load-bearing basis, and heavy objects are lifted through the steel rope assembly. The guide component and the sensor assembly serve as guide and detection components.

[0008] Furthermore, the limiting mechanism includes a channel steel bracket arranged around the continuous jack lifting assembly and an adjusting bolt arranged on the channel steel bracket.

[0009] Furthermore, the channel steel bracket is a square bracket, and the adjusting bolts are arranged in four directions of the square bracket.

[0010] Furthermore, the embedded parts are embedded bolts embedded in the top of the bridge pier or embedded steel bars of the bridge pier.

[0011] Furthermore, the column fixing pad beam, column, load-bearing beam and lifting platform pad beam are all I-beams.

[0012] Furthermore, the load-bearing beam is also provided with lifting ears for lifting the comprehensive lifting device for constructing the cap beam support.

[0013] Furthermore, a guardrail bracket is also provided on the load-bearing beam, and the guardrail bracket is fixedly connected to the load-bearing beam.

[0014] Beneficial effects of the present invention:

[0015] The present invention installs and fixes the comprehensive lifting device through embedded parts or pier column embedded steel bars. The comprehensive lifting device can be used to lift the cap beam support assembled on the ground as a whole, and then lower it for removal as a whole after the cap beam is cast, thereby reducing the time of high-altitude operations, reducing the risk of workers falling from a height, and reducing the psychological pressure on construction personnel; the turnover is good, and the disassembly and assembly efficiency of the cap beam support can be effectively improved, the construction efficiency can be improved, the cost can be saved, and the project construction period can be shortened; the comprehensive lifting device has a simple structure, a scientific and reasonable design, can be flexibly applied to cap beam supports of different spans, and has good flexibility and applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram showing the hoisting state of the comprehensive lifting device for the construction of the cap beam support according to an embodiment of the present invention;

[0017] Figure 2 A side view of the structure of a comprehensive lifting device for the construction of a cap beam support according to an embodiment of the present invention;

[0018] Figure 3A top view of the structure of the integrated lifting device for the cap beam support construction according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the arrangement of embedded parts according to an embodiment of the present invention;

[0020] Figure 5 It is a structural diagram of the limiting mechanism of an embodiment of the present invention;

[0021] Figure 6 It is a diagram showing the structure of a continuous jack according to an embodiment of the present invention.

[0022] Figure numerals: continuous jack lifting assembly 1, guide component 101, sensor assembly 102, upper clamp 103, lifting jack 104, lower clamp 105, load-bearing member 106, steel rope assembly 107, column fixing pad beam 2, column 3, load-bearing beam 4, lifting platform pad beam 5, embedded part 6, cap beam bracket 7, bridge pier 8, channel steel bracket 9, adjusting bolt 10, cap beam 11, guardrail bracket 12, lifting lug 13, pier embedded steel bar 14. DETAILED DESCRIPTION

[0023] Example:

[0024] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] As attached Figure 1-6As shown, a comprehensive lifting device for the construction of a cap beam support in this embodiment includes a lifting platform, a continuous jack lifting assembly 1 and a limiting mechanism; the lifting platform includes a column fixed pad beam 2, a column 3, a load-bearing beam 4, a lifting platform pad beam 5 and a pad beam column; the column fixed pad beam 2, the column 3 and the load-bearing beam 4 constitute the main load-bearing structure of the lifting platform as a whole and are detachably installed and fixed through embedded parts; the lifting platform pad beam 5 is connected to the load-bearing beam 4 through the pad beam column, and several groups of the continuous jack lifting assemblies 1 are detachably installed and fixed on the lifting platform pad beam 5; the limiting mechanism is arranged corresponding to the continuous jack lifting assembly 1, and is used for fine-tuning the angle of the continuous jack 1 of the continuous jack lifting assembly 1. The present invention installs and fixes the comprehensive lifting device through embedded parts 6 or pier embedded steel bars 14, fully and reasonably utilizes the structure of the bridge pier 8 itself, and utilizes the comprehensive lifting device to assemble the cap beam support 7 on the ground, and constructs it in a manner of overall lifting, overall dismantling and lowering, which reduces the time of high-altitude operations, reduces the risk of workers falling from heights, and reduces the psychological pressure on construction personnel; it has good turnover, can effectively improve the disassembly and assembly efficiency of the cap beam support 7, improve construction efficiency, save costs, and shorten project construction period; the comprehensive lifting device has a simple structure, a scientific and reasonable design, can be flexibly applied to cap beam supports 7 of different spans, and has good flexibility and applicability.

[0027] As a further illustration of the present invention, a plurality of installation holes are arranged at intervals on the load-bearing beam 4, and the continuous jack lifting assembly 1 is installed on the installation holes. Specifically, in order to ensure the balance of the lifting force, the continuous jack 1 is symmetrically installed and fixed at both ends of the load-bearing beam 4. On the other hand, in order to adapt to the lifting of the cap beam bracket 7 with different spans, the continuous jack 1 can be installed on the appropriate installation hole according to actual needs, so as to achieve the appropriate lifting point for the cap beam bracket 7 with different spans, so as to improve the flexibility and applicability of the comprehensive lifting device of this embodiment.

[0028] As attached Figure 6As shown, the continuous jack lifting assembly 1 of this embodiment includes a guide component 101, a sensor assembly 102, an upper clamp 103, a lifting jack 104, a lower clamp 105, a load-bearing member 106 and a steel rope assembly 107. The upper clamp 103 and the lower clamp 105 are arranged at both ends of the lifting jack 104 to clamp the steel rope assembly 107. The load-bearing member 106 is used as a load-bearing basis, and the steel rope assembly 107 is used to lift heavy objects. The guide component 101 and the sensor assembly 102 are used as guide and detection components to ensure the smooth and safe operation of the continuous jack lifting 1 assembly. In specific applications, the jack joint of this embodiment adopts a quick connector to avoid oil pollution and improve sealing; the upper clamp and the lower clamp are used to support the force together to ensure that the single clamp is evenly stressed during the lifting process and opens accurately and smoothly when the anchor is loosened; the hydraulic one-way valve (self-locking device) can be used to reliably lock the bracket for a long time at any time; the mechanical pressure relief valve is used to automatically release pressure when the total lifting force exceeds the rated lifting force to ensure the safety of the jack itself. The hydraulic pump station can control the lifting and lowering actions of multiple jacks or a single jack at the same time. The pump station is the main power source of the lifting device, and the jack is driven by the pump station to complete the lifting / lowering work; the lifting speed can be increased by increasing the hydraulic flow of the pump station. In the specific embodiment, a PLC control system is used to realize the decentralized arrangement of the actuators and centralized operation to meet the lifting / lowering of multiple jacks; the main control cabinet can remotely control each on-site controller, display the oil pressure and displacement data of each jack, and can monitor and adjust in real time; the lifting distance on both sides of each pier can be displayed, and the system has data storage and fault alarm functions, and automatically shuts down when the preset travel or load limit is reached; the lifting / lowering work can be remotely controlled in the online state, and only emergency stop operation is required on site. As mentioned above, the comprehensive lifting device is connected and fixed on the top of the pier through embedded parts, and double sleeves are used to fix it when it is placed and overturned.

[0029] For details, see the attached Figure 5As shown, the limiting mechanism in this embodiment includes a channel steel bracket 9 arranged around the continuous jack lifting assembly 1 and an adjusting bolt 10 arranged on the channel steel bracket 9. In this embodiment, the channel steel bracket 9 is a square bracket, and the adjusting bolt 10 is arranged in four directions of the square bracket. Four adjusting bolts 10 are arranged in four directions of the continuous jack 1. In actual application, the continuous jack 1 is pushed and adjusted by adjusting the adjusting bolts 10 in one or more directions. For example, when it is detected that the inclination of the continuous jack 1 to one side is greater than the allowable error range, the continuous jack 1 can be pushed and straightened by adjusting the adjusting bolts 10 on the side of the corresponding inclination direction of the continuous jack 1 to correct the error. That is, by arranging the adjusting bolts 10 around, the continuous jack 1 can be fine-adjusted to a state perpendicular to the horizontal plane to ensure the stability of the force, reduce the risk of overturning caused by unbalanced force during the lifting process, and ensure the construction safety of the cap beam bracket 7 of the comprehensive lifting device.

[0030] As an implementation method, see the attached Figure 4 As shown, the embedded part 6 is an embedded bolt embedded in the top of the bridge pier 8, that is, during the casting process of the bridge pier 8, the embedded bolt is embedded in the top of the bridge pier 8 as a basis for fixing the comprehensive lifting device, so as to install and fix the comprehensive lifting device on the top of the bridge pier 8. It is easy to understand that the installation and fixing method of the comprehensive lifting device of the present invention is not limited to the embedded bolt fixing method of this embodiment. In some other embodiments, the comprehensive lifting device can also be fixed by the embedded steel bars 14 of the bridge pier 8. After casting, the embedded steel bars 14 of the bridge pier 8 include a protruding part for use as a connecting cap beam 11. When installing the comprehensive lifting device, these protruding embedded steel bars 14 can be used for fixing. The comprehensive lifting device can be connected and fixed to the roots of these embedded steel bars 14 by tying, welding or matching fixings, so that the comprehensive lifting device can be installed and fixed on the top of the bridge pier 8.

[0031] As a preferred embodiment, the column fixing pad beam 2, column 3, load-bearing beam 4 and lifting platform pad beam 5 are all I-beams to improve the structural strength of the comprehensive lifting device and ensure the safety of the overall lifting of the cap beam bracket 7.

[0032] In this embodiment, a lifting lug 13 is also provided on the load-bearing beam 4, which is used for lifting the comprehensive lifting device for constructing the cap beam support 7. That is, the comprehensive lifting device of this embodiment is hoisted as a whole to the top of the bridge pier 8 after being assembled on the ground, and then installed and fixed, thereby improving the assembly and installation efficiency of the comprehensive lifting device.

[0033] In a preferred embodiment, a guardrail bracket 12 is further provided on the load-bearing beam 4, and the guardrail bracket 12 is fixedly connected to the load-bearing beam 4. After the integrated lifting device is installed and fixed, the installation and fixing state of the integrated lifting device can be manually checked, and the safety of the personnel doing the inspection is ensured by the setting of the guardrail bracket 12.

[0034] The specific use and operation method of the comprehensive lifting device of this embodiment is: when the bridge pier 8 is cast and formed, a group of mounting parts that can be compatible with the comprehensive lifting device are pre-embedded on the top of the bridge pier 8. When the bridge pier 8 is formed and the cap beam 11 needs to be constructed, the integrated lifting device is first hoisted to the top of the bridge pier 8, and installed and fixed using the mounting parts; the cantilever cap beam bracket 7 is assembled on the ground to form an integral bracket; the cantilever cap beam bracket 7 is lifted to a preset position as a whole by the integrated lifting device on the top of the bridge pier 8, and high-altitude operations are performed to install and fix the cantilever cap beam bracket 7; the cantilever cap beam is cast using the cantilever cap beam bracket 7, and during the casting of the cap beam, a group of mounting parts that can be compatible with the integrated lifting device are also pre-embedded and set on the top of the cap beam; when the cap beam bracket 7 needs to be removed after the casting of the cap beam is completed, the integrated lifting device is first hoisted to the top of the cantilever cap beam, and installed and fixed using the mounting parts; high-altitude operations are performed to dismantle the cantilever cap beam bracket 7, and the cantilever cap beam bracket 7 is lowered to the pre-ground as a whole by the integrated lifting device on the top of the cantilever cap beam, and the cantilever cap beam bracket 7 is disassembled on the ground. In this way, the ground assembly of the cap beam support 7 is realized, the time of high-altitude operation is reduced, the psychological pressure on the construction personnel is reduced, and the construction efficiency of the pier column cap beam can be improved. In a specific practical application, compared with the conventional cap beam construction (the truck crane works for 10 days, 12 workers work for 12 days, and the work efficiency is 12 days), the comprehensive lifting device of the present invention is used for cap beam construction. The comprehensive lifting device works for 2 days, and 10 workers work for 10 days to complete the same amount of cap beam construction, and the work efficiency is 9 days. In addition, through the use of the comprehensive lifting device, in the actual cap beam construction process, compared with the conventional cap beam construction method and process, the investment of many mechanical equipment can be reduced. It can be seen that the comprehensive lifting device of the present invention has shown obvious advantages in the economy and work efficiency of the cap beam construction. Not only that, the comprehensive lifting device of the present invention also solves the demand for large lifting weight of the bracket as a whole, and also improves the accuracy of on-site construction, greatly reduces the time of high-altitude operation during the cap beam construction process, and successfully achieves the goal of high-altitude operation and low-altitude operation of the cap beam construction, and converts the high-altitude operation with more control links and weak protection into ground operation, which is of great significance to eliminate risks and hidden dangers. For example, the risk of being hit by objects and being injured by machinery during construction is extremely high when conventional construction techniques are used. The use of integrated lifting devices to reduce high-altitude operations also reduces potential safety hazards during construction.

[0035] The above only describes the preferred embodiments of the present invention, but it cannot be understood as limiting the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to be changed. In short, all changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A comprehensive lifting device for cap beam support construction, characterized in that: It includes a lifting platform, a continuous jack lifting assembly and a limit mechanism; The lifting platform comprises a column-fixed cushion beam, a column, a load-bearing beam, a lifting platform cushion beam and a cushion beam column; the column-fixed cushion beam, the column and the load-bearing beam constitute the main load-bearing structure of the lifting platform as a whole and can be detachably installed and fixed through embedded parts; the lifting platform cushion beam is connected to the load-bearing beam through the cushion beam column, and several groups of continuous jack lifting assemblies can be detachably installed and fixed on the lifting platform cushion beam; The limiting mechanism is arranged corresponding to the continuous jack lifting assembly and is used for fine-tuning the angle of the continuous jack of the continuous jack lifting assembly.

2. The comprehensive lifting device for cap beam support construction according to claim 1 is characterized in that: A plurality of installation holes are arranged at intervals on the load-bearing beam, and the continuous jack lifting assembly is installed on the installation holes.

3. The comprehensive lifting device for cap beam support construction according to claim 1 is characterized in that: The continuous jack lifting assembly includes a guide component, a sensor assembly, an upper clamp, a lifting jack, a lower clamp, a load-bearing component and a steel rope assembly. The upper clamp and the lower clamp are arranged at both ends of the lifting jack to clamp the steel rope assembly. The load-bearing component is used as a load-bearing basis, and heavy objects are lifted through the steel rope assembly. The guide component and the sensor assembly are used as guide and detection components.

4. The comprehensive lifting device for cap beam support construction according to claim 1 is characterized in that: The limiting mechanism comprises a channel steel bracket arranged around the continuous jack lifting assembly and an adjusting bolt arranged on the channel steel bracket.

5. The comprehensive lifting device for cap beam support construction according to claim 3 is characterized in that: The channel steel bracket is a square bracket, and the adjusting bolts are arranged in four directions of the square bracket.

6. The comprehensive lifting device for cap beam support construction according to claim 1 is characterized in that: The embedded parts are embedded bolts embedded in the top of the bridge pier or embedded steel bars of the bridge pier.

7. The comprehensive lifting device for cap beam support construction according to claim 1 is characterized in that: The column fixing pad beams, columns, load-bearing beams and lifting platform pad beams are all I-beams.

8. The comprehensive lifting device for cap beam support construction according to claim 1 is characterized in that: The load-bearing beam is also provided with lifting lugs for lifting the comprehensive lifting device for the construction of the cap beam support.

9. The comprehensive lifting device for cap beam support construction according to claim 1 is characterized in that: A guardrail bracket is also provided on the load-bearing beam, and the guardrail bracket is fixedly connected to the load-bearing beam.

10. The comprehensive lifting device for cap beam support construction according to claim 1 is characterized in that: It also includes an up-and-down ladder, which is arranged at the center of the lifting platform.

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