Fixing mechanism for lateral thrust spring of hydraulic support for coal mine comprehensive mining

Abstract

The utility model relates to the technical field of hydraulic supports, in particular to a fixing mechanism for a lateral thrust spring of a hydraulic support for coal mine comprehensive mining, which comprises a top beam, a front lug plate is arranged at the front end of the top beam, a rear lug plate is arranged at the rear end of the top beam, a fixed lateral protective plate is fixedly mounted on one side of the top beam, and a movable lateral protective plate is movably mounted on the other side of the top beam. And criss-cross reinforcing rib plates are arranged in the top beam, a plurality of side pushing jacks are arranged in the top beam, and the side pushing rods are hinged to output shafts of the side pushing jacks. According to the fixing mechanism for the lateral thrust spring of the hydraulic support for the coal mine comprehensive mining, the installation cavity matched with the lateral thrust spring is formed in the spring sleeve, and when the lateral thrust spring is deformed due to the fact that the lateral thrust sleeve exerts pressure on the lateral thrust spring, the lateral thrust spring can be limited through the inner wall and the outer wall of the spring sleeve; the lateral thrust spring is stressed uniformly and regularly when stretching out and drawing back, and the phenomenon that local deformation of the lateral thrust spring is too large is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic supports, in particular to a fixing mechanism for a side push spring of a hydraulic support used in comprehensive coal mining in coal mines. Background Technique

[0002] The side push device of the hydraulic support is an important part of the hydraulic support, which has the functions of blocking gangue, sealing and supporting. When the support is lifted, lowered and moved, the side push device plays a guiding role and has the functions of preventing the support from falling and adjusting the support, which has a great influence on the working performance of the support.

[0003] In the prior art, the hydraulic support usually has a side push device arranged on one side, and the side push device usually consists of a hydraulic jack for driving the side guard plate to retract, a side push spring for pushing out the side guard plate and a guide rod, and a spring sleeve for positioning the side push spring. However, it usually adopts a simple way of contacting the side push spring with the guide rod. The spring sleeve is welded to the top beam, the side push spring is inserted into the spring sleeve, one end of the spring contacts the top beam, and the other end directly contacts the guide rod. This connection method can only limit the outside of the side push spring through the spring sleeve. When the side guard plate is retracted, the side push spring is prone to irregular force deformation, which will seriously affect the service life of the side push spring over time. Therefore, we propose a fixing mechanism for the side push spring of a hydraulic support used in comprehensive coal mining in coal mines to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to solve the defects existing in the prior art, and to propose a fixing mechanism for a side push spring of a hydraulic support used in comprehensive coal mining in coal mines.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a fixing mechanism for a side push spring of a hydraulic support used in comprehensive coal mining in coal mines, including a top beam, a front ear plate is arranged at the front end of the top beam, a rear ear plate is arranged at the rear end of the top beam, a fixed side guard plate is fixedly installed on one side of the top beam, a movable side guard plate is movably installed on the other side, reinforcing rib plates are arranged inside the top beam in a criss-cross manner, a plurality of side push jacks are arranged inside the top beam, and a side push rod is hinged to the output shaft of the side push jack. The end of the side push rod far away from the side push jack is threadedly connected to the movable side guard plate. A side push sleeve located outside the side push rod is welded on the movable side guard plate, and a spring sleeve is movably sleeved on the side push sleeve. An installation cavity is formed in the spring sleeve, and a side push spring is clamped in the installation cavity.

[0006] Preferably, a connecting pin shaft is arranged on the output shaft of the side push jack, and the output shaft of the side push jack is hinged to the side push rod through the connecting pin shaft. The end of the side push jack far away from the side push rod is hinged to the top beam through the connecting pin shaft, ensuring firm connection between the side push jack, the side push rod and the top beam, and ensuring that the side push jack can drive the movable side guard plate to move through the side push rod.

[0007] Preferably, a threaded connecting pipe cooperating with the side push rod is provided on one side of the movable side guard plate close to the top beam, and the threaded connecting pipe is located inside the side push sleeve. When the side push rod is installed, it can be located inside the side push sleeve to avoid interference during the operation of the two.

[0008] Preferably, the outer diameter of the side push sleeve is the same as that of the installation cavity, and the inner diameter of the side push sleeve is the same as that of the installation cavity, ensuring stable cooperation between the side push sleeve and the spring sleeve, so as to stably limit the moving direction of the movable side guard plate.

[0009] Preferably, the outer ring of the side push spring abuts against the outer wall of the installation cavity, and the inner ring of the side push spring abuts against the inner wall of the installation cavity. The side push spring can be restricted by the inner and outer walls of the spring sleeve, so that the side push spring is evenly and regularly stressed during expansion and contraction, avoiding the phenomenon of excessive local deformation of the side push spring.

[0010] Preferably, a mounting seat is provided at one end of the spring sleeve close to the side push jack, and the mounting seat is installed on the top beam by screws. The spring sleeve can be fixedly installed on the top beam through the mounting seat to limit the positions of the spring sleeve and the side push sleeve.

[0011] Preferably, the spring sleeve and the side push rod are on the same central axis, and the gap between the inner wall of the spring sleeve and the outer wall of the side push rod is 1-3 cm, restricting the sizes of the side push rod and the side push sleeve to avoid friction interference during their operation.

[0012] The utility model has the following beneficial effects:

[0013] The fixed mechanism of the side push spring of the fully-mechanized coal mining hydraulic support designed by the utility model, by arranging an installation cavity cooperating with the side push spring in the spring sleeve, when the side push sleeve applies pressure to the side push spring to deform it, the side push spring can be restricted by the inner and outer walls of the spring sleeve, so that the side push spring is evenly and regularly stressed during expansion and contraction, avoiding the phenomenon of excessive local deformation of the side push spring, which can not only improve the service life of the side push spring, but also improve the overall service life of the side push device.

[0014] The fixed mechanism of the side push spring of the fully-mechanized coal mining hydraulic support designed by the utility model, by arranging the side push sleeve and the spring sleeve outside the side push rod, and combining the installation positions of the side push jack and the side push spring, reduces the occupation of the internal space of the top beam by the side push device, and at the same time can enlarge the sizes of the side push spring and the side push sleeve, improve the adjustment and guiding ability of the movable side guard plate, and enhance the straightening ability of the support. Description of the Drawings

[0015] Figure 1This is a schematic structural diagram of the top of the roof beam of the present utility model;

[0016] Figure 2 This is a schematic structural diagram of the inner side of the roof beam of the present utility model;

[0017] Figure 3 This is a schematic structural diagram of the connection between the side push jack and the movable side guard plate of the present utility model;

[0018] Figure 4 This is a schematic structural diagram of the connection between the side push jack and the side push rod of the present utility model;

[0019] Figure 5 This is a schematic structural diagram of the cross-section of the side push sleeve and the spring sleeve of the present utility model.

[0020] Legend description:

[0021] 1. Roof beam; 2. Front ear plate; 3. Rear ear plate; 4. Reinforcing rib plate; 5. Fixed side guard plate; 6. Movable side guard plate; 7. Side push jack; 8. Side push rod; 9. Connecting pin shaft; 10. Side push sleeve; 11. Spring sleeve; 12. Mounting seat; 13. Side push spring. Specific implementation manners

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] Please refer to Figures 1 to 5, the present utility model provides a technical solution: a fixing mechanism for a side push spring of a fully mechanized coal mining hydraulic support, including a top beam 1. A front ear plate 2 is provided at the front end of the top beam 1, and a rear ear plate 3 is provided at the rear end. A fixed side guard plate 5 is fixedly installed on one side of the top beam 1, and a movable side guard plate 6 is movably installed on the other side. Reinforcing rib plates 4 are arranged crisscross inside the top beam 1. By setting the reinforcing rib plates 4, the overall structural strength of the top beam 1 is improved. A number of side push jacks 7 are arranged inside the top beam 1, and a side push rod 8 is hinged on the output shaft of the side push jack 7. One end of the side push rod 8 away from the side push jack 7 is threadedly connected to the movable side guard plate 6. The installation positions of the side push jack 7 and the side push spring 13 are combined and designed, reducing the occupation of the internal space of the top beam 1 by the side push device. A side push sleeve 10 located outside the side push rod 8 is welded on the movable side guard plate 6, and a spring sleeve 11 is movably sleeved on the side push sleeve 10, expanding the sizes of the side push spring 13 and the side push sleeve 10, improving the adjustment and guiding ability of the movable side guard plate 6, and at the same time enhancing the uprighting ability of the support. An installation cavity is provided in the spring sleeve 11, and a side push spring 13 is clamped in the installation cavity. The side push spring 13 can be restricted by the inner and outer walls of the spring sleeve 11, so that the side push spring 13 is evenly stressed and regular during expansion and contraction, avoiding the phenomenon of excessive local deformation of the side push spring 13 and improving the service life of the side push spring 13.

[0024] As a further implementation of the above technical solution: a connecting pin shaft 9 is provided on the output shaft of the side push jack 7, and the output shaft of the side push jack 7 is hinged to the side push rod 8 through the connecting pin shaft 9. The side push jack 7, the connecting pin shaft 9, and the top beam 1 are hinged through the connecting pin shaft 9, with firm connection and convenient disassembly and assembly. One end of the side push jack 7 away from the side push rod 8 is hinged to the top beam 1 through the connecting pin shaft 9, ensuring a firm connection between the side push jack 7, the side push rod 8, and the top beam 1, and ensuring that the side push jack 7 can drive the movable side guard plate 6 to move through the side push rod 8, realizing the adjustment of the position of the movable side guard plate 6.

[0025] As a further implementation of the above technical solution: a threaded connection pipe matching with the side push rod 8 is provided on the side of the movable side guard plate 6 close to the top beam 1. The side push rod 8 can be connected to the movable side guard plate 6 through the threaded connection pipe, ensuring a firm connection between the side push rod 8 and the movable side guard plate 6, and at the same time ensuring that the side push rod 8 can drive the movable side guard plate 6 to move stably. And the threaded connection pipe is located inside the side push sleeve 10. When the side push rod 8 is installed, it can be located inside the side push sleeve 10, avoiding interference during their operation.

[0026] As a further implementation of the above technical solution: The outer diameter of the side push sleeve 10 is the same as that of the installation cavity, and the inner diameter of the side push sleeve 10 is the same as that of the installation cavity, ensuring stable cooperation between the side push sleeve 10 and the spring sleeve 11, thereby realizing stable limitation of the moving direction of the movable side guard plate 6. At the same time, the sizes of the side push sleeve 10 and the spring sleeve 11 are enlarged to improve the guiding ability for the movable side guard plate 6, and the uprighting ability of the support is enhanced.

[0027] As a further implementation of the above technical solution: The outer ring of the side push spring 13 abuts against the outer wall of the installation cavity, and the inner ring of the side push spring 13 abuts against the inner wall of the installation cavity. The side push spring 13 can be restricted by the inner and outer walls of the spring sleeve 11, so that the force on each part is uniform and regular when the side push spring 13 expands and contracts, avoiding the phenomenon of excessive local deformation of the side push spring 13 and improving the service life of the side push spring 13.

[0028] As a further implementation of the above technical solution: An installation seat 12 is provided at one end of the spring sleeve 11 close to the side push jack 7, and the installation seat 12 is installed on the top beam 1 by screws. The spring sleeve 11 can be fixedly installed on the top beam 1 through the installation seat 12, realizing the limitation of the positions of the spring sleeve 11 and the side push sleeve 10, and thus realizing stable guiding of the movable side guard plate 6.

[0029] As a further implementation of the above technical solution: The spring sleeve 11 and the side push rod 8 are on the same central axis, and the gap between the inner wall of the spring sleeve 11 and the outer wall of the side push rod 8 is 1 - 3 cm, restricting the sizes of the side push rod 8 and the side push sleeve 10 to avoid friction interference between the two during operation and ensuring the stability of the side push device during operation.

[0030] Working principle:

[0031] When using the utility model, one end of the side push sleeve 10 is welded to the movable side guard plate 6. The side push spring 13 is inserted into the spring sleeve 11, and the spring sleeve 11 is sleeved outside the side push sleeve 10. The side push rod 8 is inserted into the side push sleeve 10, and one end of the side push sleeve 10 is threadedly connected to the movable side guard plate 6. The other end of the side push rod 8 is hinged to the output shaft of the side push jack 7 through the connecting pin shaft 9, and the side push jack 7 is hinged to the roof beam 1 through the connecting pin shaft 9. When the side push jack 7 is in the pressure relief state, the movable side guard plate 6 is moved outwards to the maximum stroke. At this time, the mounting seat 12 is fixed to the roof beam 1 by screws to complete the installation of the side push sleeve 10, the spring sleeve 11, and the side push spring 13. When the side push jack 7 controls the side push rod 8 to be in the contracted state, the side push rod 8 pulls the movable side guard plate 6 to reset, so that the movable side guard plate 6 fits with the roof beam 1. When the side push jack 7 is in the pressure relief state, the side push spring 13 exerts an elastic force on the side push sleeve 10, so that the movable side guard plate 6 extends outwards and fits tightly with the adjacent support, preventing the roof gangue from falling and playing a supporting role. The side push spring 13 can be restricted by the inner and outer walls of the spring sleeve 11, so that the side push spring 13 is uniformly stressed and regular when expanding and contracting, avoiding the phenomenon that the side push spring 13 has too large local deformation. The sizes of the side push spring 13 and the side push sleeve 10 are enlarged to improve the adjustment and guiding ability of the movable side guard plate 6, and at the same time, the straightening ability of the support is enhanced.

[0032] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model. The terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "including", "comprising" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A fixing mechanism for a side push spring of a fully-mechanized hydraulic support in a coal mine, comprising a roof beam (1). A front ear plate (2) is arranged at the front end of the roof beam (1), and a rear ear plate (3) is arranged at the rear end. A fixed side guard plate (5) is fixedly installed on one side of the roof beam (1), and a movable side guard plate (6) is movably installed on the other side. Reinforcing rib plates (4) are arranged in a crisscross pattern inside the roof beam (1), and it is characterized in that: A plurality of side push jacks (7) are arranged inside the top beam (1), and a side push rod (8) is hinged on the output shaft of the side push jack (7), and one end of the side push rod (8) away from the side push jack (7) is threadedly connected to the movable side guard plate (6), and a side push sleeve (10) located outside the side push rod (8) is welded on the movable side guard plate (6), and a spring sleeve (11) is movably mounted on the side push sleeve (10), and an installation cavity is opened in the spring sleeve (11), and a side push spring (13) is clamped in the installation cavity.

2. The fixing mechanism of the side push spring of a fully-mechanized coal mining hydraulic support according to claim 1, characterized in that: The output shaft of the side push jack (7) is provided with a connecting pin (9), and the output shaft of the side push jack (7) is hinged to the side push rod (8) through the connecting pin (9), and the end of the side push jack (7) away from the side push rod (8) is hinged to the top beam (1) through the connecting pin (9).

3. A fixing mechanism for a side push spring of a fully mechanized coal mining hydraulic support according to claim 1, characterized in that: A threaded connection pipe cooperating with the side push rod (8) is provided on one side of the movable side guard plate (6) close to the top beam (1), and the threaded connection pipe is located inside the side push sleeve (10).

4. A fixing mechanism for a side push spring of a hydraulic support used in a fully mechanized coal mine according to claim 1, characterized in that: The outer diameter of the side thrust sleeve (10) is the same as the outer diameter of the installation cavity, and the inner diameter of the side thrust sleeve (10) is the same as the inner diameter of the installation cavity.

5. A fixing mechanism for a side push spring of a hydraulic support used in a fully mechanized coal mine, characterized in that: The outer ring of the side thrust spring (13) abuts against the outer wall of the installation cavity, and the inner ring of the side thrust spring (13) abuts against the inner wall of the installation cavity.

6. The fixing mechanism of the side push spring of a fully mechanized coal mining hydraulic support according to claim 1, characterized in that: A mounting seat (12) is provided at one end of the spring sleeve (11) close to the side push jack (7), and the mounting seat (12) is mounted on the top beam (1) by means of screws.

7. The fixing mechanism of a side push spring for a fully mechanized coal mining hydraulic support according to claim 1, characterized in that: The spring sleeve (11) and the side push rod (8) are located on the same central axis, and the gap between the inner wall of the spring sleeve (11) and the outer wall of the side push rod (8) is 1-3 cm.

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