Electro-hydraulic control structure of hydraulic support

Abstract

The utility model provides a hydraulic support electrohydraulic control structure which comprises a safety valve arranged on the side face of a hydraulic support stand column, U-shaped sliding grooves are vertically formed in the positions, on the two sides of the safety valve, of the stand column respectively, the opening sides of the two sliding grooves are oppositely arranged, and sliding blocks are arranged in the two sliding grooves respectively. A protection cover capable of covering the safety valve is arranged between the two sliding blocks, the upper end and the lower end of the protection cover are fixedly connected with fixing plates respectively, and the free end of the fixing plate at the upper end of the protection cover is tightly attached to the side face of the stand column. The structural design is simple, the safety valve can be effectively protected to work normally, and a powerful guarantee is provided for follow-up operation of a control system.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of hydraulic support, concretely relates to a kind of hydraulic support electro-hydraulic control structure. BACKGROUND

[0002] Hydraulic support is used for coal mine fully mechanized working face support, and is often subjected to roof and floor impact load in the supporting process, and currently mainly uses the opening of column safety valve to discharge liquid to protect, and the hydraulic support safety valve is the key element of hydraulic support protection and working face mine pressure management, and plays a vital role in the normal operation of hydraulic support and coal mine safety production, and control system real-time monitoring pressure and other parameters of hydraulic support system.When the control system monitors the liquid pressure of closed system to rise, exceeds the specified value of hydraulic support safety valve, the safety valve is automatically opened under the action of its own working principle, and the system pressure is reduced by discharging liquid to the system outside, to prevent the damage of high-pressure liquid in the system to the parts of the system, therefore, it is particularly important to take corresponding protection measures for safety valve in coal mine fully mechanized mining. SUMMARY

[0003] The utility model provides a kind of hydraulic support electro-hydraulic control structure, and structure design is simple, can effectively protect safety valve to make it normal work, provide strong guarantee for the subsequent operation of control system, and the specific scheme is as follows:

[0004] A kind of hydraulic support electro-hydraulic control structure, including the safety valve being set on the side surface of hydraulic support column, U-shaped sliding slot is vertically arranged on the column of the safety valve two sides respectively, the opening side of two described sliding slots is set away from each other, two described sliding blocks are arranged in two described sliding slots respectively, and the protection cover that can cover safety valve is arranged between two described sliding blocks, the upper and lower ends of the protection cover are fixedly connected with fixed plate respectively, and the free end of the fixed plate of the upper end of protection cover is tightly arranged with the side surface of column.

[0005] Further, two described sliding slot top portions are horizontally provided with insertion block, and the fixed plate opposite to two described insertion blocks is respectively provided with the pin hole that is communicated, and the fixed plate is fixed on insertion block by insertion pin.

[0006] Further, the inner side of the fixed plate of the lower end of the protection cover is connected with a waste liquid collecting groove.

[0007] Further, two described sliding slot lower parts two sides are respectively provided with positioning hole, and two described sliding blocks lower parts two sides are respectively provided with spring positioning bead that is matched with limiting hole.

[0008] Further, two described sliding slot opposite sides are respectively provided with mounting block, and two described mounting blocks are respectively detachably connected to column by fixed screw.

[0009] Further, two insertion pin top portions are horizontally connected with pull ring.

[0010] The utility model discloses the beneficial effect is:

[0011] The utility model discloses a hydraulic support electro-hydraulic control structure, be equipped with the chute on the stand of safety valve both sides and through the protection cover of the sliding block can slide in two chutes and set up the fixed plate of protection cover both ends, can carry out effective protection to safety valve, avoid the damage of safety valve to the occurrence of safety accident because of environmental factor, when safety valve also more convenient and fast removal protection cover to facilitate the overhaul of staff when breaking down, have stronger practicality. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is structure schematic drawing of the utility model;

[0013] Figure 2 It is protection cover position schematic drawing of the utility model;

[0014] Figure 3 It is local structure schematic drawing of the utility model;

[0015] Figure 4 It is local split drawing of the utility model;

[0016] Figure 5 It is chute structure drawing of the utility model;

[0017] Figure 6 It is local enlarged view of the utility model;

[0018] Mark explanation: stand 1, safety valve 2, chute 3, sliding block 4, protection cover 5, fixed plate 6, plug-in block 7, plug-in pin 8, waste liquid collection groove 9, spring positioning bead 10, mounting block 11, pull ring 12. DETAILED DESCRIPTION

[0019] The technical scheme in the utility model embodiment will be described clearly and completely below in conjunction with the drawings in the utility model embodiment, and obviously, the described embodiment only is a part of the embodiment of the utility model, not all the embodiment.

[0020] Reference Figures 1-6The utility model provides a kind of hydraulic support electro-hydraulic control structure, including the safety valve 2 being arranged on the side of hydraulic support stand 1, the U-shaped sliding slot 3 is vertically arranged respectively on the stand 1 of the two sides of safety valve 2, the opening side of two sliding slots 3 is set away, two sliding blocks 4 are respectively arranged in two sliding slots 3, the sliding block 4 in it is tightly matched with sliding slot 3, the protective cover 5 that can cover safety valve 2 is arranged between two sliding blocks 4, the protective cover 5 in it is semicircular arc structure, the upper and lower ends of protective cover 5 are fixedly connected with fixed plate 6 respectively, and the free end of fixed plate 6 on the upper end of protective cover 5 is tightly arranged with the side of stand 1, and a relatively sealed structure can be formed by the two fixed plates 6 arranged, to avoid damage to safety valve 2 by external environment.

[0021] Preferably, the top of the two sliding slots 3 is horizontally provided with an insertion block 7, and a pin hole is formed in the opposite fixed plate 6 of the insertion block 7, and the fixed plate 6 is fixed on the insertion block 7 by a plug-in pin 8, wherein the plug-in pin 8 is further arranged to fix and limit the protective cover 5.

[0022] Preferably, the inside of the fixed plate 6 at the lower end of the protective cover 5 is connected with a waste liquid collecting groove 9, and the waste liquid collecting groove 9 is arranged to facilitate the collection of the liquid sprayed by the safety valve 2 during pressure relief.

[0023] Preferably, a positioning hole is formed on the upper two sides of the lower part of the two sliding slots 3, and a spring positioning bead 10 is arranged on the lower two sides of the two sliding blocks 4, which is matched with the limiting hole, and the spring positioning bead 10 is arranged to further enhance the fixing effect between the protective cover 5 and the sliding slot 3.

[0024] Preferably, mounting blocks 11 are arranged on the opposite sides of the two sliding slots 3, and the mounting blocks 11 are detachably connected to the stand 1 by fixed screws.

[0025] Preferably, a pull ring 12 is horizontally connected to the top of the two plug-in pins 8, and the pull ring 12 is arranged to quickly pull out the plug-in pin 8.

[0026] The working principle of the utility model is as follows: the protective cover 5 arranged can effectively protect the safety valve 2, avoid damage to the safety valve 2 due to environmental factors, and also avoid safety hazards to workers caused by the liquid sprayed by the safety valve 2 during pressure relief, providing strong protection for the subsequent operation of the control system. When the safety valve 2 is overhauled, only the two plug-in pins 8 are pulled out by the pull ring 12, and the protective cover 5 is slid from bottom to top, and the protective cover 5 can be taken out from the sliding slot 3 to complete the overhaul of the safety valve 2, which is simple in structure and convenient to operate.

[0027] It will be obvious to a person skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein and no

[0028] Furthermore, it should be understood that although the description is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description is made in this way only for the sake of clarity, and a person skilled in the art should consider the description as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.

Claims

1. A hydraulic support electro-hydraulic control structure, characterized in that: The system includes a safety valve (2) installed on the side of the hydraulic support column (1). U-shaped grooves (3) are vertically provided on the columns (1) on both sides of the safety valve (2). The opening sides of the two grooves (3) are opposite to each other. Slider (4) is provided in the two grooves (3). A protective cover (5) that can cover the safety valve (2) is provided between the two sliders (4). The upper and lower ends of the protective cover (5) are fixedly connected to the fixing plates (6), and the free end of the fixing plate (6) at the upper end of the protective cover (5) is tightly attached to the side of the column (1).

2. The electro-hydraulic control structure for a hydraulic support according to claim 1, characterized in that: The top of each of the two slides (3) is provided with a horizontal insertion block (7). The two insertion blocks (7) and their opposite fixing plates (6) are respectively provided with interconnected pin holes. The fixing plates (6) are fixed to the insertion blocks (7) by insertion pins (8).

3. The electro-hydraulic control structure for a hydraulic support according to claim 1, characterized in that: A waste liquid collection tank (9) is connected to the inner side of the fixing plate (6) at the lower end of the protective cover (5).

4. The electro-hydraulic control structure for a hydraulic support according to claim 1, characterized in that: Positioning holes are provided on both sides of the lower part of the two slide grooves (3), and spring positioning beads (10) that are adapted to the limiting holes are provided on both sides of the lower part of the two sliders (4).

5. The electro-hydraulic control structure for a hydraulic support according to claim 1, characterized in that: The two slides (3) are respectively provided with mounting blocks (11) on opposite sides, and the two mounting blocks (11) are respectively detachably connected to the column (1) by fixing screws.

6. The electro-hydraulic control structure for a hydraulic support according to claim 2, characterized in that: A pull ring (12) is horizontally connected between the tops of the two pins (8).

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