A rapid installation device for a U-shaped steel blockage retaining support in a roadway retaining

Abstract

The utility model discloses a purpose lies in providing a kind of quick installation device of U-shaped steel gangue blocking support in roadway, belong to along empty roadway without coal pillar mining technical field, including base, the top of base is equipped with lifting oil cylinder, the piston rod end of lifting oil cylinder is equipped with platform, platform is equipped with telescopic oil cylinder, telescopic oil cylinder is vertically arranged with lifting oil cylinder, the piston rod end of telescopic oil cylinder is equipped with bearing, the outside of bearing is equipped with track, the track is equipped with clamping oil cylinder, the both ends of track are equipped with two groups of hydraulic clamping pincers respectively, clamping oil cylinder is connected with hydraulic clamping pincers. By using the utility model, the quick, accurate and safe installation of U-shaped steel gangue blocking support is realized.

Description

Technical Field

[0001] This utility model belongs to the field of coal pillar-free mining technology along the goaf, specifically relating to a quick installation device for a U-shaped steel rock retainer support for goaf mining. Background Technology

[0002] U-shaped steel collapsible supports are widely used as retaining walls for roadways due to their high support strength and good pressure relief performance. These supports are usually composed of multiple U-shaped steel components connected on-site by cable clamps to form a closed ring or open horseshoe-shaped structure, which together form a sturdy retaining wall.

[0003] Currently, the installation of U-shaped steel rock-blocking supports underground mainly relies on the following two methods: Manual labor using simple tools: Workers use steel chisels, crowbars, and other tools, relying on multiple people working together to move the heavy U-shaped steel components to the installation position by carrying and lifting them by hand, and then manually stabilizing them before connecting them. This method is extremely labor-intensive, inefficient, and poses a very high safety risk, as workers are directly under the heavy load.

[0004] General lifting equipment assisted installation: This is currently the relatively mainstream method, usually using multiple chain hoists, wire ropes, and hanging anchors in combination. The installation process is roughly as follows: First, hang the anchors on the top slab, then use chain hoists to lift the single U-shaped steel, manually adjust its spatial posture, roughly position it, then have workers hold the component, and finally connect and tighten the cable clamps.

[0005] In the prior art, CN202120856464.8, a novel U-shaped steel installation system, relates to the field of building component technology and can improve the stability of building structures. However, this utility model patent only relates to the stability of the U-shaped steel installation structure and does not form a complete installation device; CN202421291681.7, an auxiliary installation device for underground U-shaped steel arch frames, is installed at the connecting rod of a hydraulic excavator to facilitate the lifting of the top beam of the steel arch frame, which can save manpower, improve work efficiency and reduce safety risks. However, it is essentially an auxiliary installation device that needs to be used in conjunction with an excavator and is not designed for the specific operation of installing U-shaped steel supports.

[0006] However, in the specific dynamic pressure environment of roadway retention, the complex environment and limited space mean that traditional installation methods relying on manual labor and general lifting equipment have severely restricted the safe and efficient application of this technology. Therefore, developing a dedicated U-shaped steel rock-blocking support installation device has become an urgent need to promote the further development and popularization of roadway retention technology. Utility Model Content

[0007] This utility model addresses the problems of poor safety, low efficiency, insufficient precision, and high labor intensity in the existing installation technology of U-shaped steel rock retaining supports. It provides a rapid installation device for U-shaped steel rock retaining supports in tunnels, enabling rapid, accurate, and safe installation of U-shaped steel rock retaining supports.

[0008] The present invention adopts the following technical solution: A quick installation device for a U-shaped steel retaining wall support in a tunnel includes a base. A lifting cylinder is provided above the base. A platform is provided at the piston rod end of the lifting cylinder. A telescopic cylinder is provided on the platform. The telescopic cylinder is arranged perpendicularly to the lifting cylinder. A bearing is provided at the piston rod end of the telescopic cylinder. A rail is installed on the outside of the bearing. A clamping cylinder is provided on the rail. Two sets of hydraulic clamping clamps are provided at both ends of the rail. The clamping cylinder is connected to the hydraulic clamping clamps.

[0009] Furthermore, the base is provided with tracks at its bottom.

[0010] Furthermore, the base is provided with individual hydraulic supports at its four apex corners.

[0011] Furthermore, the hydraulic clamps at both ends of the track are arranged symmetrically with respect to the center of the track.

[0012] Furthermore, the inner diameter of the hydraulic clamping clamp matches the outer diameter of the U-shaped steel.

[0013] Furthermore, a hydraulic pump station is provided at one end of the base, and the hydraulic pump station is connected to the lifting cylinder, the telescopic cylinder and the clamping cylinder respectively.

[0014] Furthermore, one end of the lifting cylinder is equipped with an overflow valve, and one end of the telescopic cylinder is equipped with a hydraulic lock.

[0015] The beneficial effects of this utility model are as follows: 1. Improved construction efficiency: Traditional installation relies entirely on manual labor using tools such as hand-operated hoists and crowbars, which is laborious and slow. This device uses hydraulic power to grasp, lift, adjust, and tighten the support frame, integrating multiple cumbersome steps into a single operation process. This increases installation speed several times over, reducing the previously scattered "handling-positioning-aligning-connecting-tightening" processes to just a few steps: "grabbing-positioning-locking," significantly shortening the cycle time for a single support frame.

[0016] 2. Ensure support quality: By using this utility model, it can be ensured that the installation position, angle and spacing meet the design requirements, avoiding the deviations that are easy to occur in manual installation; the hydraulic system can provide and maintain a preset and uniform initial support force, ensuring that each support can support the top plate in a timely and effective manner, reducing the problem of local instability caused by uneven installation quality.

[0017] 3. Enhanced safety: It eliminates the risk of occupational injuries such as pinched hands, crushed feet, and sprains that may occur when using heavy tools manually. Mechanized operation also reduces the exposure time of workers under heavy objects. The device can provide stable and controllable support force, ensuring that the U-shaped steel support can quickly reach the initial support force as designed, and fit closely with the roof and floor and the surrounding rock of the roadway to form effective active support, thereby improving the overall stability and safety of the roadway.

[0018] 4. Economic benefits: The number of workers required is reduced, efficiency is improved, and the labor cost per unit of advance is significantly reduced; the speed of roadway retention is accelerated, creating conditions for rapid face advancement, which directly affects the mine's production continuity and output; the improvement in safety means avoiding huge direct and indirect economic losses caused by accidents; standardized installation reduces deformation and damage to supports and improves the reuse rate. Attached Figure Description

[0019] Figure 1 This is a side view of the structure of this utility model; Figure 2 This is a schematic diagram of the main structure of this utility model; Wherein: 1-Top plate; 2-Single hydraulic prop; 3-Crawler; 4-Lifting cylinder; 5-Relief valve; 6-Telescopic cylinder; 7-Hydraulic lock; 8-Bearing; 9-Railway; 10-Clamping cylinder; 11-Hydraulic clamp; 12-Hydraulic pump station; 13-Base. Detailed Implementation

[0020] The present invention will be further described with reference to the accompanying drawings.

[0021] As shown in the figure, a quick installation device for a U-shaped steel retaining wall support in a tunnel includes a base 13. A lifting cylinder 4 is provided above the base 13. A platform is provided at the piston rod end of the lifting cylinder 4. A telescopic cylinder 6 is provided on the platform. The telescopic cylinder 6 is arranged perpendicularly to the lifting cylinder 4. A bearing 8 (preferably a slewing bearing) is provided at the piston rod end of the telescopic cylinder 6. A rail 9 is installed on the outside of the bearing 8. A clamping cylinder 10 is provided on the rail 9. Two sets of hydraulic clamping clamps 11 are provided at both ends of the rail 9. The clamping cylinder 10 is connected to the hydraulic clamping clamps 11.

[0022] Furthermore, the bottom of the base 13 is provided with tracks 3.

[0023] Furthermore, the base 13 is provided with individual hydraulic support columns 2 at its four apex corners. When the device is in operation, the individual hydraulic support columns 2 extend and strongly support the top and bottom plates of the roadway, providing the entire device with an extremely stable and slip-resistant working foundation, eliminating the risk of the device moving slightly or overturning under the pressure of the top plate.

[0024] Furthermore, the hydraulic clamps 11 at both ends of the track 9 are arranged symmetrically with respect to the center of the track 9.

[0025] Furthermore, the inner diameter of the hydraulic clamp 11 matches the outer diameter of the U-shaped steel, which can maximize the contact area, ensure a firm and reliable clamping, and effectively prevent the U-shaped steel from slipping or being damaged during the clamping process.

[0026] Furthermore, a hydraulic pump station 12 is provided at one end of the base 13, and the hydraulic pump station 12 is connected to the lifting cylinder 4, the telescopic cylinder 6 and the clamping cylinder 10 respectively.

[0027] Furthermore, one end of the lifting cylinder 4 is provided with an overflow valve 5, and one end of the telescopic cylinder 6 is provided with a hydraulic lock 7.

[0028] In this invention, the extension and retraction of the lifting cylinder 4 can drive all the mechanisms connected above it (including extension, rotation and clamping components) to move vertically as a whole, thereby achieving a smooth lifting of the U-shaped steel bracket from the ground to the installation height.

[0029] The extension and retraction of the telescopic cylinder 6 can drive the track and its components to move horizontally along the radial direction of the tunnel (i.e., towards the tunnel wall). Simultaneously, the bearing 8 allows the track 9 to rotate about its axis.

[0030] The usage process of this utility model is as follows: Step 1: Preparation and Positioning The operator controls the device to move to the designated location for installing the U-shaped steel support via the crawler track 3. Then, the hydraulic system is activated to control the four individual hydraulic supports 2 mounted on the base 13 to rise synchronously until they are firmly supported between the roof and floor of the roadway, thus securing the entire device and forming a stable working platform.

[0031] Step 2: Grabbing and Overlapping Operate the hydraulic clamping jaws 11 to open their jaws, and adjust them using the moving device or hydraulic cylinder to align the jaws with the appropriate position of the U-shaped steel placed on the ground. Then, control the hydraulic clamping jaws 11 to close, firmly clamping the U-shaped steel bracket with its jaws matching the shape of the U-shaped steel. Two sets of hydraulic clamping jaws 11 each clamp one U-shaped steel bracket. Activate the lifting cylinder 4 to lift the clamped U-shaped steel bracket off the ground as a whole, raising it to a position slightly above its final installation height, allowing space for subsequent fine-tuning. With the device maintaining the alignment of the two U-shaped steel brackets, workers can safely and conveniently overlap the two U-shaped steel brackets together.

[0032] Step 3: Precise Alignment Horizontal telescopic alignment: Operate telescopic cylinder 6 to push or pull back the already assembled U-shaped steel bracket so that its end is precisely aligned with the predetermined connection point in the horizontal direction.

[0033] Horizontal rotation alignment: Using the rotation function of bearing 8, adjust the horizontal angle of the already connected U-shaped steel support to ensure that it continues the curvature of the roadway axis or adjacent support.

[0034] Vertical height alignment: The adjustable lifting cylinder 4 can precisely lower the assembled U-shaped steel bracket to the designed installation height.

[0035] The above three steps can be performed independently or simultaneously until the spatial orientation of the assembled U-shaped steel support fully meets the installation requirements.

[0036] Step 4: Install the bracket Use the operating device to install the pre-assembled U-shaped steel bracket in the predetermined position. After confirming that the U-shaped steel bracket is installed, release the hydraulic clamp 11.

[0037] Step 5: Cyclic Operation The lifting cylinder 4, telescopic cylinder 6, and other mechanisms are sequentially controlled to reset to the transport state, and finally the single hydraulic support 2 is retracted. The track 3 is driven to move the device to the next installation point, and the steps are repeated to achieve continuous and rapid support installation.

[0038] The lifting cylinder 4, telescopic cylinder 6, and hydraulic clamping clamp 11 are all powered by an external hydraulic pump station 12 and centrally controlled through an overflow valve 5 and a hydraulic lock 7. They are easy to operate and respond quickly.

[0039] This utility model can be equipped with track bases and adjustable clamping and alignment mechanisms according to various tunnel conditions with different cross-sectional dimensions and specifications of U-shaped steel.

[0040] With mechanized and hydraulic operation, workers no longer need to perform high-intensity, high-risk alignment work under unsupported roofs or next to heavy objects, thus greatly ensuring their personal safety.

Claims

1. A quick-installation device for a U-shaped steel retaining wall support in a tunnel, characterized in that: Includes a base (13), above which is a lifting cylinder (4), the piston rod end of the lifting cylinder (4) is provided with a platform, and a telescopic cylinder (6) is provided on the platform. The telescopic cylinder (6) is arranged perpendicularly to the lifting cylinder (4). The piston rod end of the telescopic cylinder (6) is provided with a bearing (8), and a track (9) is installed on the outside of the bearing (8). A clamping cylinder (10) is provided on the track (9), and two sets of hydraulic clamping clamps (11) are provided at both ends of the track (9). The clamping cylinder (10) is connected to the hydraulic clamping clamps (11).

2. The quick installation device for a U-shaped steel retaining wall support in a tunnel according to claim 1, characterized in that: The base (13) has a track (3) at its bottom.

3. The quick installation device for a U-shaped steel retaining wall support in a tunnel according to claim 1, characterized in that: The base (13) is provided with individual hydraulic support columns (2) at its four apex corners.

4. The quick installation device for a U-shaped steel retaining wall support in a tunnel as described in claim 1, characterized in that: The hydraulic clamps (11) at both ends of the track (9) are arranged symmetrically with respect to the center of the track (9).

5. The quick installation device for a U-shaped steel retaining wall support in a tunnel according to claim 1, characterized in that: The inner diameter of the hydraulic clamp (11) matches the outer diameter of the U-shaped steel.

6. The quick installation device for a U-shaped steel retaining wall support in a tunnel according to claim 1, characterized in that: A hydraulic pump station (12) is provided at one end of the base (13), and the hydraulic pump station (12) is connected to the lifting cylinder (4), the telescopic cylinder (6) and the clamping cylinder (10) respectively.

7. The quick installation device for a U-shaped steel retaining wall support in a tunnel according to claim 1, characterized in that: One end of the lifting cylinder (4) is provided with an overflow valve (5), and one end of the telescopic cylinder (6) is provided with a hydraulic lock (7).

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