A vertical shaft large pressure steel pipe lower elbow mounting device

Abstract

This utility model provides an installation device for large-scale pressure steel pipe elbows in vertical shafts, including a guide device laid on the ground. A movable frame is slidably supported on top of the guide device and can move. The movable frame is connected to the front and rear hydraulic cylinders of a hydraulic drive system via hinged supports. An adjustment platform is hinged to the piston rods of the front and rear hydraulic cylinders of the hydraulic drive system. The steel pipe elbow to be installed is fixed on the fixed support of the adjustment platform. The front and rear hydraulic cylinders of the hydraulic drive system perform telescopic movements, thereby driving the adjustment platform to rise, fall, and tilt, so that the steel pipe reaches the installation state. This installation device can be used for the installation of large-scale pressure steel pipe elbows in vertical shafts, and can easily realize the movement of the pressure steel pipe elbow and the adjustment of the installation angle during the installation process.

Description

Technical Field

[0001] This utility model relates to the field of water and electricity pressure steel pipe installation technology, specifically a device for installing a lower elbow of a large vertical shaft pressure steel pipe. Background Technology

[0002] See Figure 7 In hydropower systems, the space at the lower bend of the pressure steel pipe shaft is limited. Traditionally, lifting machinery is positioned at the top of the shaft, the foundation concrete for the lower bend is poured into steps, and tracks and guide anchors are laid. The steel pipe is then vertically hoisted onto the track at the inlet of the lower bend. Multiple winches combined with guide anchors are then used to slowly lower the pipe to the installation position. This method has the following drawbacks:

[0003] (1) It requires a high level of technical and construction personnel skills. The calculation and selection of anchors, the calculation and selection of winches, the process measures for the shunting of steel pipes, and the adjustment and operation during construction all have high requirements.

[0004] (2) The traditional method of using anchors and winches has a long construction preparation period.

[0005] (3) The traditional method of moving the steel pipe in the vertical shaft of the pressure steel pipe involves multiple guidances during the movement of the steel pipe, which is complex and dangerous. It is one of the high-risk operations in the construction of pressure steel pipe.

[0006] The steel pipe shaft bend is divided into multiple pipe sections. The steel pipes with an approximately horizontal axis can be transported and positioned using a transport trolley. Those that can be vertically hoisted can be directly hoisted and positioned using lifting machinery arranged in the shaft. The middle part of the bend is not suitable for horizontal transport by trolley and cannot be directly positioned using lifting machinery, so the construction is more difficult. Utility Model Content

[0007] To address the aforementioned problems, this utility model provides an installation device for large vertical shaft pressure steel pipe elbows. This installation device can be used for the installation of large vertical shaft pressure steel pipe elbows. During the installation process, it can easily move the pressure steel pipe elbow and adjust the installation angle. It can effectively replace the traditional method of installing steel pipe elbows in tunnels using winches and guide anchors, and has the characteristics of safety and efficiency.

[0008] To achieve the aforementioned technical features, the purpose of this utility model is as follows: A vertical shaft large pressure steel pipe elbow installation device includes an adjustment platform, a movable frame, a hydraulic drive system, and a guide device; the guide device is laid on the ground, the movable frame is slidably supported on the top of the guide device and can move, the movable frame is connected to the front drive hydraulic cylinder and the rear drive hydraulic cylinder of the hydraulic drive system through hinge supports; the adjustment platform is hinged to the piston rod tops of the front drive hydraulic cylinder and the rear drive hydraulic cylinder of the hydraulic drive system; the steel pipe elbow to be installed is fixed on the fixed support of the adjustment platform, and the front drive hydraulic cylinder and the rear drive hydraulic cylinder of the hydraulic drive system perform telescopic movements to drive the adjustment platform to rise and fall and form an inclination angle, so that the steel pipe reaches the installation state.

[0009] The guiding device is used for bearing pressure and guiding, and the guiding device adopts parallel arranged rails, I-beams, channel steel or angle iron.

[0010] The mobile frame is assembled by welding steel profiles. Wheel frames are fixedly installed at the four corners of the bottom of the mobile frame, and track wheels are installed on the wheel frames. The track wheels roll and support the top of the guide device. An equipment platform is set at the bottom of the mobile frame. The equipment platform is used to install the hydraulic drive system. A counterweight platform is set on one side of the mobile frame, and a counterweight block is placed on the counterweight platform.

[0011] The mobile frame is equipped with a drive unit that drives its movement, which can be electrically driven or chain-driven.

[0012] The hydraulic drive system includes a front-drive hydraulic cylinder and a rear-drive hydraulic cylinder. The bottom end of the cylinder body of the front-drive hydraulic cylinder is fixed to the top of the lower crossbeam of the movable frame through a hinge support. The cylinder body of the front-drive hydraulic cylinder is fixedly connected to the middle crossbeam of the movable frame through a fixing plate. The top end of the piston rod of the front-drive hydraulic cylinder is hinged to one end of the bottom of the adjustment platform.

[0013] The bottom end of the cylinder body of the rear-drive hydraulic cylinder is hinged to the rear crossbeam of the movable frame through a hinge support, and the top end of the piston rod of the rear-drive hydraulic cylinder is hinged to the other end of the bottom of the adjustment platform.

[0014] The front-drive hydraulic cylinder and the rear-drive hydraulic cylinder are connected to the hydraulic power system.

[0015] The hydraulic power system includes a hydraulic pump station, which is fixed on the top of the mobile frame equipment platform. The hydraulic pump station is connected to the front-drive hydraulic cylinder and the rear-drive hydraulic cylinder through hydraulic pipelines and control valves. The hydraulic pump station is also connected to the main control cabinet.

[0016] The adjustment platform includes a fixed platform. One bottom end of the fixed platform is hinged to the top of the piston rod of the rear drive hydraulic cylinder via a first hinge seat. The other bottom end of the fixed platform is hinged to the top of the front drive hydraulic cylinder via a second hinge seat. Parallel fixed supports are fixed to the top of the fixed platform, and a fixed ear plate is provided at the top of the fixed platform.

[0017] The top of the fixed support is an arc-shaped panel for supporting the pressure steel pipe.

[0018] The curved panel of the fixed support has a gap in the middle for inserting a stiffening ring into the steel pipe to prevent the steel pipe from tilting and sliding down.

[0019] The present invention has the following beneficial effects:

[0020] 1. This utility model replaces the scheme of installing a winch and guide anchor at the lower bend of the shaft, eliminating the construction preparation period of the winch and guide anchor and improving work efficiency.

[0021] 2. The device of this utility model is simple and reliable. It transforms the traditional arc-shaped guide movement of steel pipes into vertical and horizontal positions by having multiple winches work together during the movement, which simplifies the movement path and greatly improves on-site construction safety.

[0022] 3. This utility model device reduces the number of construction workers, eliminates the need for equipment such as anchors and winches, and lowers construction costs. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 Front view of the device of this utility model.

[0025] Figure 2 Side view of the device of this utility model.

[0026] Figure 3 Overall view of this device Figure 1 .

[0027] Figure 4 Overall view of this device Figure 2 .

[0028] Figure 5 Three-dimensional diagram of the initial state of this device.

[0029] Figure 6 This is a three-dimensional diagram showing the installation and adjustment status of the device.

[0030] Figure 7 This is the existing installation process diagram.

[0031] In the figure: Adjustment platform 1, fixed support 11, fixed ear plate 12, first hinge seat 13, fixed platform 14, second hinge seat 15;

[0032] 2. Mobile frame; 21. Wheel frame; 22. Equipment platform; 23. Counterweight platform; 24. Counterweight block;

[0033] Hydraulic drive system 3, front drive hydraulic cylinder 31, hinge support 32, fixed plate 33, rear drive hydraulic cylinder 34, hydraulic pump station 35, main control cabinet 36;

[0034] Guide device 4. Detailed Implementation

[0035] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0036] Reference Figure 1-4 A vertical shaft large pressure steel pipe elbow installation device includes an adjustment platform 1, a movable frame 2, a hydraulic drive system 3, and a guide device 4. The guide device 4 is laid on the ground, and the movable frame 2 is slidably supported on the top of the guide device 4 and can move. The movable frame 2 is connected to the front drive hydraulic cylinder 31 and the rear drive hydraulic cylinder 34 of the hydraulic drive system 3 through a hinge support 32. The adjustment platform 1 is hinged to the piston rod tops of the front drive hydraulic cylinder 31 and the rear drive hydraulic cylinder 34 of the hydraulic drive system 3. The steel pipe elbow to be installed is fixed on the fixed support 11 of the adjustment platform 1. The front drive hydraulic cylinder 31 and the rear drive hydraulic cylinder 34 of the hydraulic drive system 3 perform telescopic movements, thereby driving the adjustment platform 1 to rise and fall and form an inclination angle, so that the steel pipe reaches the installation state. This installation device can be used for installing large pressure steel pipe elbows in vertical shafts. During installation, it facilitates the movement of the pressure steel pipe elbow and the adjustment of its installation angle. It effectively replaces the traditional method of installing steel pipe elbows in tunnels using winches and guide anchors, offering safety and high efficiency. In the specific construction process, the movable frame 2 is moved and supported on top of the guide device 4. The adjustment platform 1 on top of the movable frame 2 supports and fixes the large pressure steel pipe elbow in the vertical shaft. Then, the hydraulic drive system 3 drives the movable frame 2 to rotate, thereby adjusting its angle.

[0037] Furthermore, the guiding device 4 is used for bearing pressure and guiding, and the guiding device 4 adopts parallel arranged rails, I-beams, channel steel, or angle iron. The guiding device 4 simplifies the structure and reduces the installation and layout costs of the equipment.

[0038] Furthermore, the mobile frame 2 is assembled from welded steel sections. Wheel frames 21 are fixedly installed at the four corners of the bottom of the mobile frame 2, and track wheels are mounted on the wheel frames 21. The track wheels provide rolling support on the top of the guide device 4. An equipment platform 22 is provided at the bottom of the mobile frame 2, which is used to install the hydraulic drive system 3. A counterweight platform 23 is provided on one side of the mobile frame 2, and counterweight blocks 24 are placed on the counterweight platform 23. The mobile frame 2, as described above, can support and mount the entire device, ensuring its structural stability and reliability. The installation structure of the counterweight platform and counterweight blocks ensures the safety of the mobile frame 2 during operation.

[0039] Furthermore, the mobile frame 2 is equipped with a drive device to move it, which can be electrically driven or chain-driven. This drive device is mainly used for pipe docking and movement during subsequent installation. The wheel frame 21 moves on the guide device 4. Since the elbow steel pipe inside the tunnel is close to the installation location, the wheel frame can be moved using the drive device, or it can be electrically driven or manually driven.

[0040] Furthermore, the hydraulic drive system 3 includes a front-drive hydraulic cylinder 31 and a rear-drive hydraulic cylinder 34. The bottom end of the cylinder body of the front-drive hydraulic cylinder 31 is fixed to the top of the lower crossbeam of the movable frame 2 via a hinge support 32. The cylinder body of the front-drive hydraulic cylinder 31 is fixedly connected to the middle crossbeam of the movable frame 2 via a fixing plate 33. The top end of the piston rod of the front-drive hydraulic cylinder 31 is hinged to one end of the bottom of the adjustment platform 1. The bottom end of the cylinder body of the rear-drive hydraulic cylinder 34 is hinged to the rear crossbeam of the movable frame 2 via a hinge support 32. The top end of the piston rod of the rear-drive hydraulic cylinder 34 is hinged to the other end of the bottom of the adjustment platform 1. The hydraulic drive system 3 described above can provide rotational adjustment power to the adjustment platform 1, thereby facilitating subsequent docking angle adjustment. During operation, when it is necessary to adjust the angle of the bent pipe, the angle of the adjustment platform 1 is adjusted by controlling the extension and retraction of the front-drive hydraulic cylinder 31 and the rear-drive hydraulic cylinder 34 respectively.

[0041] Furthermore, the front-drive hydraulic cylinder 31 and the rear-drive hydraulic cylinder 34 are connected to a hydraulic power system. The hydraulic power system includes a hydraulic pump station 35, which is fixed to the top of the equipment platform 22 of the movable frame 2. The hydraulic pump station 35 is connected to the front-drive hydraulic cylinder 31 and the rear-drive hydraulic cylinder 34 via hydraulic pipelines and control valves, and is also connected to the main control cabinet 36. This hydraulic power system provides hydraulic energy. During operation, the hydraulic pump station 35 provides hydraulic power to the front-drive hydraulic cylinder 31 and the rear-drive hydraulic cylinder 34, thereby driving them to extend and retract, ultimately achieving the angle adjustment of the top adjustment platform 1. The main control cabinet 36 enables the control of the hydraulic system.

[0042] Furthermore, the adjustment platform 1 includes a fixed platform 14. One bottom end of the fixed platform 14 is hinged to the top of the piston rod of the rear-drive hydraulic cylinder 34 via a first hinge seat 13, and the other bottom end of the fixed platform 14 is hinged to the top of the front-drive hydraulic cylinder 31 via a second hinge seat 15. Parallel fixed supports 11 are fixed to the top of the fixed platform 14, and a fixed ear plate 12 is provided at the top of the fixed platform 14. The adjustment platform 1 is mainly used to provide reliable and stable auxiliary support for the steel pipe elbow, thereby ensuring its stable support on the top of the fixed supports 11 to prevent swaying. The tilt angle can be adjusted using the front-drive hydraulic cylinder 31 and the rear-drive hydraulic cylinder 34.

[0043] Furthermore, the top of the fixed support 11 is an arc-shaped panel for supporting the pressure steel pipe. This arc-shaped panel provides stable support for the pressure steel pipe.

[0044] Furthermore, a gap is left in the middle of the arc-shaped panel of the fixed support 11 for inserting the stiffening ring of the steel pipe to prevent the steel pipe from tilting and sliding down. Through the above-mentioned limiting mechanism, the structural characteristics of the steel pipe itself can be used to achieve stable limiting, thereby ensuring the safety and reliability of the installation process.

[0045] The working principle of this utility model is as follows:

[0046] In the initial state, after the pressure steel pipe shaft is excavated, the guide device 4 is laid and the device of this utility model is placed on the guide device 4 below the shaft. At this time, the adjustment platform 1 of this device is in a horizontal state.

[0047] The steel pipe elbow is placed horizontally on the fixed support 11 of the adjustment platform 1 of this device using lifting machinery. If the center of gravity of the steel pipe elbow is located outside the platform in the final state, the steel pipe elbow should also be fixed on the adjustment platform 1. Steel wire rope, shackles and chain hoists can be used to lock the steel pipe on the adjustment platform.

[0048] Next, the device is moved along the guide device 4 to the steel pipe installation position. The main control cabinet 36 controls the hydraulic pump station 35, which in turn controls the front drive hydraulic cylinder 31 and the rear drive hydraulic cylinder 34 to vertically raise the steel pipe elbow to the installation elevation. By controlling the different extension and retraction amounts of the front drive hydraulic cylinder 31 and the rear drive hydraulic cylinder 34, the horizontal angle of the steel pipe elbow is controlled. After the adjustment is qualified, the steel pipe elbow is fixed together with the previous section of steel pipe. Then, the device is removed and the next section of steel pipe is installed.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A shaft large penstock lower bend installation device, characterized by, The system includes an adjustment platform (1), a movable frame (2), a hydraulic drive system (3), and a guide device (4). The guide device (4) is laid on the ground, and the movable frame (2) is slidably supported on the top of the guide device (4) and can move. The movable frame (2) is connected to the front drive hydraulic cylinder (31) and the rear drive hydraulic cylinder (34) of the hydraulic drive system (3) through a hinge support (32). The adjustment platform (1) is hinged to the piston rod top of the front drive hydraulic cylinder (31) and the rear drive hydraulic cylinder (34) of the hydraulic drive system (3). The steel pipe elbow to be installed is fixed on the fixed support (11) of the adjustment platform (1). The front drive hydraulic cylinder (31) and the rear drive hydraulic cylinder (34) of the hydraulic drive system (3) perform telescopic movements to drive the adjustment platform (1) to rise and fall and form an angle, so that the steel pipe reaches the installation state.

2. The installation device for the lower elbow of a large pressure steel pipe in a vertical shaft according to claim 1, characterized in that, The guiding device (4) is used for bearing pressure and guiding, and the guiding device (4) adopts parallel arranged rails, I-beams, channel steel or angle iron.

3. The installation device for the lower elbow of a large pressure steel pipe in a vertical shaft according to claim 1, characterized in that, The mobile frame (2) is assembled by welding steel profiles. Wheel frames (21) are fixedly installed at the four corners of the bottom of the mobile frame (2). Track wheels are installed on the wheel frames (21). The track wheels roll and support the top of the guide device (4). An equipment platform (22) is set at the bottom of the mobile frame (2). The equipment platform (22) is used to install the hydraulic drive system (3). A counterweight platform (23) is set on one side of the mobile frame (2). A counterweight block (24) is placed on the counterweight platform (23).

4. The installation device for the lower elbow of a large pressure steel pipe of a vertical shaft according to claim 3, characterized in that, The mobile frame (2) is equipped with a drive device that drives its movement, which is either electrically driven or chain driven.

5. The device for installing a lower elbow of a large-sized pressure steel pipe in a shaft according to claim 1, wherein The hydraulic drive system (3) includes a front-drive hydraulic cylinder (31) and a rear-drive hydraulic cylinder (34). The bottom end of the cylinder body of the front-drive hydraulic cylinder (31) is fixed to the top of the lower crossbeam of the movable frame (2) through a hinge support (32). The cylinder body of the front-drive hydraulic cylinder (31) is fixedly connected to the middle crossbeam of the movable frame (2) through a fixing plate (33). The top end of the piston rod of the front-drive hydraulic cylinder (31) is hinged to one end of the bottom of the adjustment platform (1). The bottom end of the cylinder body of the rear-drive hydraulic cylinder (34) is hinged to the rear crossbeam of the movable frame (2) through the hinge support (32), and the top end of the piston rod of the rear-drive hydraulic cylinder (34) is hinged to the other end of the bottom of the adjustment platform (1). The front-drive hydraulic cylinder (31) and the rear-drive hydraulic cylinder (34) are connected to the hydraulic power system.

6. A mounting device for a lower bend of a large pressure steel pipe of a vertical shaft according to claim 5, characterized in that, The hydraulic power system includes a hydraulic pump station (35), which is fixed on the top of the equipment platform (22) of the mobile frame (2). The hydraulic pump station (35) is connected to the front drive hydraulic cylinder (31) and the rear drive hydraulic cylinder (34) through hydraulic pipelines and control valves. The hydraulic pump station (35) is connected to the main control cabinet (36).

7. The device for installing a lower elbow of a large pressure steel pipe in a shaft according to claim 1, wherein The adjustment platform (1) includes a fixed platform (14). One end of the bottom of the fixed platform (14) is hinged to the top of the piston rod of the rear drive hydraulic cylinder (34) through a first hinge seat (13). The other end of the bottom of the fixed platform (14) is hinged to the top of the front drive hydraulic cylinder (31) through a second hinge seat (15). The top of the fixed platform (14) is fixed with parallel fixed supports (11) and a fixed ear plate (12) is provided on the top of the fixed platform (14).

8. The installation device for the lower elbow of a large pressure steel pipe of a vertical shaft according to claim 1, characterized in that, The top of the fixed support (11) is an arc-shaped panel for supporting the pressure steel pipe.

9. The device for installing a lower elbow of a large-sized pressure steel pipe in a shaft according to claim 1, wherein The arc panel of the fixed support (11) has a gap in the middle for inserting the stiffening ring of the steel pipe to prevent the steel pipe from sliding down at an angle.

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