Single hydraulic prop

Abstract

The utility model belongs to the field of hydraulic props, and relates to a single hydraulic prop which comprises a hydraulic prop cylinder body, a supporting annular plate and an auxiliary prop. The support annular plate is sleeved outside the hydraulic prop cylinder body; the auxiliary supporting column is movably connected with the supporting annular plate. The single hydraulic prop is high in safety degree and good in supporting stability.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic props, and relates to a single hydraulic prop, and more particularly to a single hydraulic prop for mining. Background Technology

[0002] A mine shaft is a general term encompassing the tunnels, chambers, equipment, surface buildings, and structures that form an underground coal mine production system. Sometimes, inclined shafts, vertical shafts, and adits in underground mine development are also referred to as mine shafts. During mine construction, suspended single-unit hydraulic props are required for support. These props are height-adjustable, stable support devices. For example, utility model patent number 202123076692.2 discloses a suspended single-unit hydraulic prop for mine support. This utility model utilizes a remote transmission module and a wireless inclinometer within a toolbox. The inclinometer allows for real-time detection of the hydraulic prop's tilt. If the tilt exceeds a preset value, an audible and visual warning is issued, and the danger signal is transmitted to remote management personnel via the remote transmission module, alerting staff to promptly proceed to the site for maintenance and to prevent accidents. Although this utility model can effectively warn of the occurrence of safety accidents, when using this technical solution, it takes a certain amount of time for maintenance personnel to rush to the support site, and the continuous tilting of the tilted single hydraulic prop often leads to the collapse of the mine roof, creating a safety hazard. Utility Model Content

[0003] In order to solve the above-mentioned technical problems in the background art, the present invention provides a single hydraulic prop with high safety and good support stability.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A single hydraulic prop, characterized in that: the single hydraulic prop includes a hydraulic prop cylinder, a support ring plate, and an auxiliary prop; the support ring plate is fitted outside the hydraulic prop cylinder; and the auxiliary prop is movably connected to the support ring plate.

[0006] The aforementioned support ring plate includes a support ring and a buffer assembly; the support ring is fitted onto the outside of the hydraulic prop cylinder; the auxiliary prop is movably connected to the support ring; the buffer assembly consists of at least three sets; the three sets of buffer assemblies are respectively arranged radially on the support ring and extend toward the hydraulic prop cylinder.

[0007] The three sets of buffer components are evenly distributed along the radial direction of the support ring on the support ring.

[0008] The aforementioned buffer assembly includes a support plate, a rubber pad, and a buffer spring; the buffer spring is in two sets, both sets of buffer springs are arranged in parallel along the radial direction of the support ring on the inner wall of the support ring; the end of the buffer spring is provided with a support plate; the support plate is arc-shaped in general; the inner surface of the support plate is provided with a rubber pad; the rubber pad abuts against the outer wall of the hydraulic support cylinder.

[0009] The aforementioned buffer assembly also includes a limiting plate placed between the support plate and the inner wall of the support ring; the length of the limiting plate is less than the length of the buffer spring in its natural state.

[0010] The aforementioned auxiliary support includes a hinged rod and a base plate disposed at the end of the hinged rod; there are multiple hinged rods, which are evenly distributed and movably disposed outside the support ring.

[0011] The outer wall of the aforementioned support ring is provided with a U-shaped groove, and the hinge rod is movably mounted in the U-shaped groove via a pin.

[0012] The aforementioned auxiliary support also includes a rope and a hook at the end of the rope; the rope is fixed to the hinge rod, and the hook is attached to the outside of the hydraulic support cylinder.

[0013] The aforementioned single hydraulic prop also includes a positioning plate fitted outside the hydraulic prop cylinder, and one or more fixed half-rings are provided on the positioning plate; the hook fastener is hooked onto the fixed half-ring.

[0014] The hydraulic support cylinder has a piston rod arranged along its axial direction inside; a connecting plate is provided on the top of the piston rod, and multiple connecting holes penetrating the connecting plate are provided on the connecting plate along its thickness direction; a base is provided at the bottom of the hydraulic support cylinder; multiple fixing holes penetrating the base are provided on the base along its thickness direction; and a three-way valve communicating with the interior of the hydraulic support cylinder is provided on the side wall of the hydraulic support cylinder.

[0015] The advantages of this utility model are:

[0016] This invention provides a single hydraulic prop, including a hydraulic prop cylinder, a support ring plate, and an auxiliary prop; the support ring plate is fitted onto the outside of the hydraulic prop cylinder; the auxiliary prop is movably connected to the support ring plate. This invention uses multiple sets of buffer components on the inner side of the support ring plate, which are attached to the surface of the hydraulic prop cylinder. Buffer springs and the auxiliary prop buffer the hydraulic prop cylinder, preventing tilting and facilitating the limitation of the tilt angle. This effectively prevents continuous tilting of the hydraulic prop cylinder from causing the upper part of the supported mine roof to fall or collapse, avoiding injury to mine personnel from the tilted single hydraulic prop. It offers a high level of safety and further enhances the stability of the single hydraulic prop support. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the single hydraulic support provided by this utility model;

[0018] Figure 2 This is a partial cross-sectional view of the single hydraulic support provided by this utility model.

[0019] Figure 3 This is a front view partial cross-sectional view of the connection structure of the support ring plate used in this utility model;

[0020] Figure 4 This is a top view of the single hydraulic support provided by this utility model;

[0021] Figure 5 This is a top view cross-sectional diagram of the connection structure of the support ring plate used in this utility model.

[0022] In the picture:

[0023] 1-Hydraulic support cylinder body; 11-Piston; 12-Connecting plate; 13-Three-way valve; 14-Base; 15-Connecting hole; 16-Fixing hole; 2-Support ring plate; 21-U-shaped groove block; 22-Limiting plate; 23-Support plate; 24-Rubber pad; 25-Buffer spring; 3-Auxiliary support; 31-Hinged rod; 32-Base plate; 33-Rope; 34-Hanging fastener; 4-Positioning plate; 41-Fixing half ring. Detailed Implementation

[0024] See Figure 1 as well as Figure 2 This utility model provides a single hydraulic prop, including a hydraulic prop cylinder 1, a support ring plate 2, and an auxiliary prop 3; the support ring plate 2 is fitted onto the outside of the hydraulic prop cylinder 1; the auxiliary prop 3 is movably connected to the support ring plate 2. See also... Figure 5 The support ring plate 2 provided by this utility model includes a support ring and a buffer assembly; the support ring is fitted onto the outside of the hydraulic prop cylinder 1; the auxiliary prop 3 is movably connected to the support ring; the buffer assembly consists of at least three sets; the three sets of buffer assemblies are respectively arranged radially on the support ring and extend toward the hydraulic prop cylinder 1. Preferably, the three sets of buffer assemblies are evenly distributed radially on the support ring. For example, this utility model uses four sets of buffer assemblies, evenly distributed on the support ring.

[0025] See Figure 3 as well as Figure 5The buffer assembly used in this invention includes a support plate 23, a rubber pad 24, and a buffer spring 25. Two sets of buffer springs 25 are arranged in parallel along the radial direction of the support ring on the inner wall of the support ring. A support plate 23 is provided at the end of each buffer spring 25. The support plate 23 is generally arc-shaped. A rubber pad 24 is provided on the inner surface of the support plate 23. The rubber pad 24 abuts against the outer wall of the hydraulic prop cylinder 1. Furthermore, the buffer assembly also includes a limiting plate 22 placed between the support plate 23 and the inner wall of the support ring. The length of the limiting plate 22 is less than the length of the buffer spring 25 in its natural state. The support plate 23 is supported and adhered to the outer side of the hydraulic prop cylinder 1 by the rubber pad 24. The buffer spring 25 at the side end of the support plate 23 provides buffer support for the hydraulic prop cylinder 1, preventing the mine roof supported by the hydraulic prop cylinder 1 from falling and collapsing, injuring mine workers, due to excessive rapid tilting.

[0026] See Figure 2 as well as Figure 3 The auxiliary support 3 used in this invention includes a hinged rod 31 and a base plate 32 disposed at the end of the hinged rod 31. Multiple hinged rods 31 are evenly distributed and movably disposed outside the support ring. For example, the outer wall of the support ring is provided with a U-shaped groove 21, and the hinged rods 31 are movably disposed in the U-shaped groove 21 via pins. Furthermore, the auxiliary support 3 also includes a rope 33 and a hook 34 disposed at the end of the rope 33; the rope 33 is fixed to the hinged rod 31, and the hook 34 is hooked onto the outside of the hydraulic support cylinder 1. For example, the base plate 32 can be fixed to the mine surface with ground nails, so that the multiple hinged rods 31 form a stable support structure to firmly support the support ring plate 2.

[0027] See Figure 1 as well as Figure 2 The single hydraulic prop used in this utility model also includes a positioning plate 4 fitted outside the hydraulic prop cylinder 1, and one or more fixed half rings 41 are provided on the positioning plate 4; the hook fastener 34 is hooked on the fixed half ring 41.

[0028] See Figure 1 , Figure 2 as well as Figure 4Inside the hydraulic prop cylinder 1, a piston 11 is arranged along the axial direction of the hydraulic prop cylinder 1. A connecting plate 12 is provided on the top of the piston 11, and the piston 11 is connected to the mine roof through the connecting plate 12, thereby providing stable support for the mine roof. Multiple connecting holes 15 are provided on the connecting plate 12 along the thickness direction of the connecting plate 12. A base 14 is provided at the bottom of the hydraulic prop cylinder 1. Multiple fixing holes 16 are provided on the base 14 along the thickness direction of the base 14, and the fixing holes 16 are symmetrically distributed on the left and right sides of the hydraulic prop cylinder 1, which can easily fix the base 14 of the hydraulic prop cylinder 1 to the ground. A three-way valve 13 is provided on the side wall of the hydraulic prop cylinder 1, which communicates with the interior of the hydraulic prop cylinder 1 and is responsible for controlling the flow of liquid and pressure safety.

[0029] When using the single hydraulic prop provided by this utility model, firstly, the hydraulic prop cylinder 1 is fixed in a suitable position in the mine, so that the upper end of the hydraulic prop cylinder 11 supports the mine roof. Then, the auxiliary prop 3 on the side of the hydraulic prop cylinder 1 is removed, and the auxiliary prop 3 is tilted outward and fixed to the mine ground. At this time, the fixed auxiliary prop 3 fixes the position of the support ring plate 2. When the hydraulic prop cylinder 1 tilts, the hydraulic prop cylinder 1 compresses the buffer spring 25 through the support plate 23 on one side, so that the buffer spring 25 elastically buffers the tilt of the hydraulic prop cylinder 1, ensuring that the hydraulic prop cylinder 1 does not detach from the support ring plate 2. This helps to limit the tilt angle of the single hydraulic prop, effectively preventing the upper end of the single hydraulic prop from falling and collapsing due to continuous tilting, and avoiding mine personnel being injured by the tilted single hydraulic prop.

Claims

1. A single hydraulic prop, characterized in that: The single hydraulic prop includes a hydraulic prop cylinder (1), a support ring plate (2), and an auxiliary prop (3); the support ring plate (2) is fitted outside the hydraulic prop cylinder (1); the auxiliary prop (3) is movably connected to the support ring plate (2).

2. The single hydraulic prop according to claim 1, characterized in that: The support ring plate (2) includes a support ring and a buffer assembly; the support ring is fitted on the outside of the hydraulic prop cylinder (1); the auxiliary prop (3) is movably connected to the support ring; the buffer assembly is at least three sets; the three sets of buffer assemblies are respectively arranged radially on the support ring and extend toward the hydraulic prop cylinder (1).

3. The single hydraulic prop according to claim 2, characterized in that: The three sets of buffer components are evenly distributed on the support ring along the radial direction of the support ring.

4. The single hydraulic prop according to claim 3, characterized in that: The buffer assembly includes a support plate (23), a rubber pad (24), and a buffer spring (25); there are two sets of buffer springs (25), and both sets of buffer springs (25) are arranged in parallel along the radial direction of the support ring on the inner wall of the support ring; the end of the buffer spring (25) is provided with a support plate (23); the support plate (23) is arc-shaped in whole; the inner surface of the support plate (23) is provided with a rubber pad (24); the rubber pad (24) abuts against the outer wall of the hydraulic support cylinder (1).

5. The single hydraulic prop according to claim 4, characterized in that: The buffer assembly also includes a limiting plate (22) placed between the support plate (23) and the inner wall of the support ring; the length of the limiting plate (22) is less than the length of the buffer spring (25) in its natural state.

6. The single hydraulic prop according to claim 5, characterized in that: The auxiliary support (3) includes a hinge rod (31) and a base plate (32) disposed at the end of the hinge rod (31); there are multiple hinge rods (31), which are evenly distributed and movable outside the support ring.

7. The single hydraulic prop according to claim 6, characterized in that: The outer wall of the support ring is provided with a U-shaped groove (21), and the hinge rod (31) is movably disposed in the U-shaped groove (21) by means of a pin.

8. The single hydraulic prop according to claim 7, characterized in that: The auxiliary support (3) also includes a rope (33) and a hook (34) at the end of the rope (33); the rope (33) is fixed on the hinge rod (31), and the hook (34) is hooked to the outside of the hydraulic support cylinder (1).

9. The single hydraulic prop according to claim 8, characterized in that: The single hydraulic prop also includes a positioning plate (4) fitted outside the hydraulic prop cylinder (1), and one or more fixed half rings (41) are provided on the positioning plate (4); the hook fastener (34) is hooked on the fixed half ring (41).

10. The single hydraulic prop according to any one of claims 1-9, characterized in that: Inside the hydraulic support cylinder (1), a piston (11) is provided along the axial direction of the hydraulic support cylinder (1); a connecting plate (12) is provided on the top of the piston (11), and a plurality of connecting holes (15) penetrating the connecting plate (12) are provided on the connecting plate (12) along the thickness direction of the connecting plate (12). The bottom of the hydraulic support cylinder (1) is provided with a base (14); a plurality of fixing holes (16) through the base (14) are provided on the base (14) along the thickness direction of the base (14); a three-way valve (13) communicating with the interior of the hydraulic support cylinder (1) is provided on the side wall of the hydraulic support cylinder (1).

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