A hydraulic support for mines to resist the side guard plate

Abstract

The utility model discloses a hydraulic support resistance guard plate for mining, which belongs to the technical field of hydraulic support related equipment, and comprises a split guard plate main body, both sides of which are provided with connecting ears for connecting to the hydraulic support, and the split guard plate main body comprises a first supporting member, a second supporting member and a third supporting member; the first supporting member is a plate-shaped structure as a whole, and forms an open first bearing cavity and a second bearing cavity on the supporting working surface; the second supporting member is movably installed in the first bearing cavity, and the bearing cavity is adapted to the second supporting member; the third supporting member is adapted to the second bearing cavity, and is inserted into the second bearing cavity by overlapping and sliding from the bottom open mouth, so as to perform split support, and unload the sudden pressure of the coal wall during support, thereby improving the degree of deformation and further improving the stability of the connection between the guard plate and the hydraulic support.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic support related equipment, in particular to a hydraulic support resistance guard plate for mining. Background Art

[0002] The main function of the hydraulic support guard plate is to prevent the coal wall from breaking. The guard plate and the guard jack are hinged and rotate around the hinge axis of the front beam component. The guard jack supports the pressure from the coal wall. The guard plate is a simple welded plate. When guarding is needed, the guard jack can be operated to make the lower part of the guard plate close to the coal wall. The guard device must be retracted before the coal mining machine arrives to allow the coal mining machine to pass smoothly and prevent the drum from cutting the front beam.

[0003] In the prior art, the shape and structure of the guard plate is fixed, and it is supported on the coal wall. Affected by factors such as sudden changes in roof pressure, the pressure on the coal wall changes, resulting in sudden pressure on the guard plate. If the guard plate does not support well, it is easy to cause the coal wall to break. Due to the pressure change on the inner wall, the sudden increase in pressure on part of the guard plate will cause overall deformation, affecting the real-time support operation (causing the part that is deformed to leave the support operation position), and when the guard plate is deformed, it is easy to twist and break at the connection with the hydraulic support. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a mining hydraulic support to resist the guard plate and perform split support. During support, the sudden pressure on the coal wall is unloaded, the degree of deformation is improved, and the stability of the connection between the guard plate and the hydraulic support is improved.

[0005] The technical solution adopted by the utility model is as follows: a hydraulic support resistance guard plate for mining, comprising a split guard plate body, both sides of the split guard plate body are provided with connecting ears for connecting to the hydraulic support, the split guard plate body comprises a first supporting member, a second supporting member and a third supporting member; the first supporting member is a plate-like structure as a whole, forming an open first bearing cavity and a second bearing cavity on the supporting working surface; the second supporting member is movably installed in the first bearing cavity, and the bearing cavity is adapted to the second supporting member; the third supporting member is adapted to the second bearing cavity, and is inserted into the second bearing cavity by overlapping and sliding from the bottom open mouth.

[0006] Furthermore, a fixing column is connected between the second supporting member and the inner side of the first bearing cavity, a front support assembly is slidably arranged on the fixing column, and the front support assembly can be deformed along the central axis direction of the fixing column.

[0007] Furthermore, a fixed long rod arranged between the front and rear walls of the second bearing cavity passes through a corresponding position of the third supporting member, and a fixed short rod is arranged between the third supporting member and the rear wall of the second bearing cavity.

[0008] Furthermore, at least two resistance airbags are arranged on the front side of the third supporting member, and adjacent resistance airbags are connected through an air intake pipe and an exhaust pipe, and there is a predetermined vertical distance between the air intake pipe and the exhaust pipe.

[0009] Furthermore, the front support assembly includes a fixing plate slidably mounted on a fixing column, and a support airbag is installed between the front and rear sides of the fixing plate, and the support airbag respectively abuts against the inner side of the first bearing cavity and the corresponding side wall of the second supporting member.

[0010] After adopting the above structure, the utility model has the following beneficial effects:

[0011] (1) The second supporting member and the third supporting member are matched and installed with the first supporting member to form a split and stable supporting working surface, realize the stress deformation in different regions, and reduce the fracture or distortion caused by the stress at the connection;

[0012] (2) By setting up the front support assembly and the resistance airbag on the third support member, when the force on the second support member and the first support member suddenly increases, force relief and buffering are performed, thereby reducing the deformation acceleration and the degree of deformation. The deformation occurs in a split manner, thereby reducing the effect of deformation on real-time support and reducing the damage caused by the sidewall to the sidewall plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] Figure 1 This is a schematic diagram of the overall structure of a hydraulic support resistance guard plate for mining proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of a split side guard plate of a mining hydraulic support resisting side guard plate proposed by the utility model;

[0016] Figure 3 This is a partial cross-sectional view of a hydraulic support resistance guard plate for mining proposed by the utility model;

[0017] Figure 4 A half-section view of a hydraulic support resistance guard plate for mining proposed by the utility model;

[0018] Figure 5 This is a front view of a hydraulic support resistance guard plate for mining proposed by the utility model;

[0019] Figure 6 This is a schematic diagram of the overall structure of a mining hydraulic support resistance guard plate from another angle proposed by the utility model.

[0020] In the attached drawings: 1. connecting ear, 2. first supporting member, 3. second supporting member, 4. third supporting member, 5. fixing column, 6. fixing long rod, 7. fixing short rod, 8. resistance airbag, 9. air inlet pipe, 10. exhaust pipe, 11. fixing plate, 12. expanding airbag, 13. first bearing cavity, 14. second bearing cavity. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0023] like Figure 1-Figure 6As shown, a hydraulic support resistance guard plate for mining includes a split guard plate body, both sides of which are provided with connecting ears 1 for connecting to the hydraulic support, and the split guard plate body includes three parts: a first supporting member 2, a second supporting member and a third supporting member 4; the first supporting member 2 is a plate-like structure as a whole, and the connecting ears 1 are provided on both sides of its top end, forming an open first bearing cavity 13 and a second bearing cavity 14 on the supporting working surface; it should be noted that the front side of the first bearing cavity 13 is open, and the bottom of the second bearing cavity 14 is semi-open (the left and right sides of the first bearing cavity 13 and the second bearing cavity 14 are both open); wherein, the second supporting member 3 is movably installed in the first bearing cavity 13, the bearing cavity is adapted to the second supporting member 3, the second supporting member 3 can be movably installed in the first bearing cavity 13, the second supporting member 3 is in the shape of a right-angle buckle plate, buckled in the first bearing cavity 13, and the upper and lower opposite sides can be welded or The third support member 4 is adapted to the second bearing cavity 14, and is inserted into the second bearing cavity 14 by overlapping and sliding from the bottom open mouth. The third support member 4 is also in the form of a right-angle buckle plate, and the upper end passes through the open mouth at the bottom of the second bearing cavity 14 and slides into the second bearing cavity 14. The bottom end of the third support member 4 overlaps the bottom of the second bearing cavity 14. The upper and lower opposite sides of the third support plate can be connected to the upper and lower walls of the second bearing cavity 14 by welding or bolting. Through the above method, the first support member 2, the second support member 3 and the third support member 4 form a split guard plate body, and the second support plate and the front side plate of the second bearing cavity 14 (formed by the first support plate) perform support operations in the upper and lower areas respectively. The deformation correlation is not large. The pressure caused by the regional plate suddenly increases, so that when the lower part is subjected to force and deformation, the deformation caused to the upper part is reduced, thereby reducing the probability of damage to the connecting ear 1.

[0024] In some preferred embodiments, further, a fixed column 5 is connected between the second supporting member 3 and the inner side of the first bearing cavity 13, and a plurality of fixed columns can be arranged in an array, and a front support assembly is slidably arranged on the fixed column 5, and the front support assembly can be deformed along the central axis direction of the fixed column 5. Specifically, the front support assembly includes a fixed plate 11 slidably mounted on the fixed column 5, and an expansion airbag 12 is installed between the front and rear sides of the fixed plate 11, and the expansion airbag 12 is respectively against the inner side of the first bearing cavity 13 and the corresponding side wall of the second supporting member 3, and the expansion airbag 12 can be replaced by an elastic member, or filled with an elastic material, such as a polyurethane elastomer, etc., which has a predetermined elastic deformation ability and resilience, and has a predetermined toughness and wear resistance, and is suitable for the support environment of the hydraulic support, and the outer shell is an elastic wear-resistant material such as a rubber material with predetermined elastic deformation and wear resistance. When the second supporting member 3 is against the coal wall, the second supporting member 3 bears the pressure of the coal wall. When the pressure of the coal wall suddenly increases, the airbag 12 is inflated to form a buffering effect, which can be against the rear side of the second supporting plate to ensure stable support of the second supporting plate.

[0025] In some preferred embodiments, a fixed long rod 6 arranged between the front and rear walls of the second bearing cavity 14 passes through the corresponding position of the third supporting member 4, and a fixed short rod 7 is arranged between the third supporting member 4 and the rear wall of the second bearing cavity 14, wherein the fixed long rod 6 and the fixed short rod 7 are spaced and arranged in an array, and at least two resistance airbags 8 are arranged on the front side of the third supporting member 4, and adjacent resistance airbags 8 are connected through an intake pipe 9 and an exhaust pipe 10, and there is a predetermined vertical distance between the intake pipe 9 and the exhaust pipe 10, wherein the specific structure of the resistance airbag 8 can be the same as the structure of the expansion airbag 12, and the interior is filled with polyurethane. The outer shell is made of elastic materials such as polyurethane elastomer, and the outer shell is made of elastic and wear-resistant materials such as rubber materials with predetermined elastic deformation and wear-resistant properties. When the front side of the second bearing cavity 14 is subjected to a sudden increase in side wall pressure, the resistance airbag 8 is squeezed toward the rear side, and the airflow is exchanged between the resistance airbags 8 through the intake pipe 9 and the exhaust pipe 10, so that the airflow squeezed out of the resistance airbag 8 passes through the adjacent resistance airbag 8 and then flows back, ensuring the support of the resistance airbag 8 to the front side of the second bearing cavity 14, slowing down the deformation speed of the second bearing cavity 14 caused by the sudden increase in pressure, playing a certain effect of unloading force and absorbing energy, ensuring the effect of temporary support, and extending a certain support time.

[0026] Specific working principle: the supporting operation position of the guard plate is divided into two upper and lower supporting operation positions. During support, the second supporting member 3 and the front side of the second bearing cavity 14 formed at the lower part of the first supporting member 2 form an upper supporting operation surface and a lower supporting operation surface respectively. The upper supporting surface and the lower supporting surface respectively press against the coal wall to perform corresponding supporting operations; when the pressure of the coal wall suddenly increases, the front support component of the second supporting member 3 is pressed against to unload the deformation. Specifically, the airbag 12 is opened to unload the deformation, so that the deformation of the second supporting member 3 is subjected to a certain resistance, thereby slowing down the deformation rate. , to avoid sudden and large deformation of the guard plate, which may affect the connecting ear 1 and cause it to break; in addition, when the pressure of the coal wall suddenly increases, the resistance airbag 8 in the second bearing cavity 14 is pressed against to unload the deformation, and the airflow is exchanged between adjacent resistance airbags 8. The airflow entering the adjacent resistance airbags 8 can flow back through the corresponding exhaust pipe 10, ensuring that the pressure-bearing resistance airbag 8 unloads the force and absorbs energy, slowing down the deformation amplitude and rate. The split guard plate makes the deformation occur as much as possible at the support operation position formed by the split body, and tries to ensure the overall support effect of the guard plate when the coal wall is pressurized.

[0027] Although the embodiments of the utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the attached claims and their equivalents. In short, if those skilled in the art are inspired by them and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the scope of protection of the utility model.

Claims

1. A hydraulic support for mining, characterized in that: The invention comprises a split side guard plate body, and connecting ears for connecting to a hydraulic support are arranged on both sides of the split side guard plate body. The split side guard plate body comprises: The first supporting member is a plate-shaped structure as a whole, and forms an open first bearing cavity and a second bearing cavity on the supporting working surface; A second supporting member is movably mounted in the first bearing cavity, wherein the bearing cavity is adapted to the second supporting member; The third supporting member is matched with the second bearing cavity and is inserted into the second bearing cavity by overlapping and sliding from the bottom opening.

2. The hydraulic support support plate for mining according to claim 1 is characterized in that: A fixing column is connected between the second supporting member and the inner side of the first bearing cavity, a front support assembly is slidably arranged on the fixing column, and the front support assembly can be deformed along the central axis direction of the fixing column.

3. The mine hydraulic support resistance guard plate according to claim 1 is characterized in that: A fixed long rod arranged between the front and rear walls of the second bearing cavity passes through a corresponding position of the third supporting member, and a fixed short rod is arranged between the third supporting member and the rear wall of the second bearing cavity.

4. The mine hydraulic support resistance guard plate according to claim 1 is characterized by: At least two resistance airbags are arranged on the front side of the third supporting member, and adjacent resistance airbags are connected through an air intake pipe and an exhaust pipe, and there is a predetermined vertical distance between the air intake pipe and the exhaust pipe.

5. The hydraulic support support plate for mining according to claim 2 is characterized in that: The front support assembly includes a fixing plate slidably mounted on a fixing column, and a support airbag is installed between the front and rear sides of the fixing plate. The support airbag is respectively against the inner side of the first bearing cavity and the corresponding side wall of the second supporting member.

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