Portable mine roadway supporting stand column

Abstract

The portable mine roadway supporting stand column comprises an ejector rod, a base body, a buffer and a limiting ring, the ejector rod, the base body, the buffer and the limiting ring are all of a modular structure, the base body is a top shell extraction column body internally provided with a vertical cam, the lower end of the ejector rod is installed in the base body, and the buffer is arranged between the base body and the ejector rod; the limiting ring is arranged at the top opening part of the seat body, is in threaded connection with the seat body and is used for fixing the axial position of the ejector rod. A quick-assembly modular mechanism is adopted and is different from a multi-section structure, and the assembly mode of the device is more convenient. And meanwhile, a buffer is adopted for achieving secondary buffering, when the supporting stand column is damaged, the flexible film is damaged, the flexible particles are inflated and expanded, meanwhile, the buffer solution permeates downwards based on gravity, and after making contact with air, the buffer solution and the flexible particles form a colloid stable structure to be attached to the position between the ejector rod and the base body, temporary buffering is achieved, and the failure speed of the stand column is delayed.

Description

Technical Field

[0001] The invention relates to the field of mine tunnel support, in particular to a convenient mine tunnel support column. Background Art

[0002] During the mining and production process, in order to ensure the construction safety at the construction site, it is often necessary to place support frames on the inner walls of the mine tunnels to keep the ore body stable. This can effectively avoid accidents such as roof falls, improve safety protection for mine production, and avoid injuries to workers caused by collapse and roof falls during construction.

[0003] The existing support frames are evenly multi-section support frames, which are connected by connecting plates and finally spliced ​​into an upper semicircular support frame. However, they must be assembled in the mine when in use, and the long installation time poses a safety hazard. At the same time, it is often difficult to install secondary protection devices on the support tools when on-site installation is adopted, resulting in ineffective stability of the support capacity. When the support device is damaged, it is often directly damaged due to the rigidity of the structure, without a buffer stage, which is not conducive to personnel evacuation.

[0004] A convenient mine tunnel support column is now needed to solve the above problems. Summary of the invention

[0005] The present invention is to solve the problem that the existing support frame in the prior art is a uniform multi-section support frame. The multi-section support frame is connected by a connecting plate and finally spliced ​​into an upper semicircular support frame. However, it must be assembled in the mine when used. The long installation time poses a safety hazard. At the same time, it is often difficult to install a secondary protection device on the support tool when on-site installation is adopted, resulting in the problem of ineffective stability of the support capacity. A convenient mine tunnel support column is provided to solve the above problems.

[0006] The present invention provides a convenient mine tunnel support column, comprising a mandrel, a seat body, a buffer and a limit ring. The mandrel, the seat body, the buffer and the limit ring are all modular structures. The seat body is a top shell cylinder with a vertical cam arranged inside. The lower end of the mandrel is installed inside the seat body. The buffer is arranged between the seat body and the mandrel. The lower end of the mandrel contacts the top position of the cam inside the seat body. The limit ring is arranged at the top mouth of the seat body and is threadedly connected with the seat body to fix the axial position of the mandrel.

[0007] The buffer includes an annular shell, a first destruction chamber, a second destruction chamber, a thickened flexible membrane, an anti-drop bottom support, an anti-drop chamber, a buffer solution and compressed flexible particles. The annular shell is a hollow cylindrical structure. Through holes are provided on both end surfaces of the annular shell. The first destruction chamber, the second destruction chamber and the anti-drop chamber are arranged in the annular shell from top to bottom in sequence. The first destruction chamber and the second destruction chamber are separated by a brittle thin plate, and the second destruction chamber and the anti-drop chamber are separated by a rigid reinforcement plate. The outer wall of the annular shell contacts the inner wall of the upper section of the seat body. The first destruction chamber, the second destruction chamber and the anti-drop chamber are closed at the opening position in the annular shell by a thickened flexible membrane. The buffer solution is arranged in the first destruction chamber, and the compressed flexible particles are arranged in the second destruction chamber. The buffer solution is an air gelled liquid, and the compressed flexible particles are an expansion structure. The second destruction chamber is a vacuum environment, and the anti-drop bottom support is a rubber ring, which is arranged in the anti-drop chamber.

[0008] The portable mine tunnel support column described in the present invention is preferably a threaded ring with an internal thread at the lower section, and a plurality of screw holes are evenly arranged radially at the upper section of the limit ring.

[0009] A portable mine tunnel support column described in the present invention is, as a preferred embodiment, a seat body including a seat shell, a transverse axis, a lever, and an involute cam. The involute cam is a disc-shaped cam with an involute outer circumference. The seat shell is a hollow rotating body with an open top. An external thread is arranged on the outside of the top of the seat shell. The involute cam is arranged inside the seat shell. The involute cam is arranged vertically, one end of the transverse axis is connected with a key of the center hole of the involute cam, the transverse axis passes through the seat shell, and the lever is vertically connected to the other end of the transverse axis and arranged outside the seat shell.

[0010] The beneficial effects of the present invention are as follows:

[0011] The present invention adopts a quick-install modular mechanism, which is different from a multi-stage structure. The assembly method of this device is more convenient. All devices are assembled axially, and the lifting adopts a contact type, without additional debugging. At the same time, a buffer is used to achieve secondary buffering. When the support column is damaged, the flexible membrane is damaged, the flexible particles are inflated, and the buffer penetrates downward based on gravity. After contacting the air, it forms a colloidal and stable structure with the flexible particles and adheres to the top rod and the seat body, achieving temporary buffering and temporarily delaying the failure speed of the pillar. At the same time, the anti-fall cavity provides a space limit for falling after the shell is damaged, and cooperates with the anti-fall bottom support to perform secondary anti-fall. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of a convenient mine tunnel support column;

[0013] Figure 2 It is a schematic diagram of a convenient mine tunnel support column buffer;

[0014] Figure 3 The present invention is a schematic diagram of a convenient mine tunnel support column seat.

[0015] Reference numerals:

[0016] 1. Push rod; 2. Seat body; 21. Seat shell; 22. Horizontal axis; 23. Lever; 24. Involute cam; 3. Buffer; 31. Annular shell; 32. First destruction chamber; 33. Second destruction chamber; 34. Thickened flexible membrane; 35. Anti-drop bottom support; 36. Anti-drop chamber; 37. Buffer; 38. Compressed flexible particles; 4. Limiting ring. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Example 1

[0019] like Figure 1 As shown, a portable mine tunnel support column comprises a mandrel 1, a seat body 2, a buffer 3 and a limit ring 4. The mandrel 1, the seat body 2, the buffer 3 and the limit ring 4 are all modular structures. The seat body 2 is a top shell cylinder with a vertical cam arranged inside. The lower end of the mandrel 1 is installed inside the seat body 2. The buffer 3 is arranged between the seat body 2 and the mandrel 1. The lower end of the mandrel 1 contacts the top position of the cam inside the seat body 2. The limit ring 4 is arranged at the top mouth of the seat body 2 and is threadedly connected with the seat body 2 to fix the axial position of the mandrel 1.

[0020] like Figure 2 As shown, the buffer 3 includes an annular shell 31, a first destruction cavity 32, a second destruction cavity 33, a thickened flexible membrane 34, an anti-drop bottom support 35, an anti-drop cavity 36, a buffer 37 and compressed flexible particles 38. The annular shell 31 is a hollow cylindrical structure. Through holes are provided on both end surfaces of the annular shell 31. The first destruction cavity 32, the second destruction cavity 33 and the anti-drop cavity 36 are sequentially arranged in the annular shell 31 from top to bottom. The first destruction cavity 32 and the second destruction cavity 33 are separated by a brittle thin plate. The second destruction cavity 33 and the anti-drop cavity 36 are separated by a brittle thin plate. The drop cavity 36 is separated by a rigid reinforcement plate, the outer wall of the annular shell 31 contacts the inner wall of the upper section of the seat body 2, the first destruction cavity 32, the second destruction cavity 33 and the anti-drop cavity 36 are closed at the opening positions in the annular shell 31 by a thickened flexible membrane 34, the buffer solution 37 is arranged in the first destruction cavity, and the compressed flexible particles 38 are arranged in the second destruction cavity 33. The buffer solution 37 is an air gelled liquid, and the compressed flexible particles 38 are an expansion structure. The second destruction cavity 33 is a vacuum environment, and the anti-drop bottom support 35 is a rubber ring, which is arranged in the anti-drop cavity 36.

[0021] The limiting ring 4 is a threaded ring with an internal thread at the lower section, and a plurality of threaded holes are evenly arranged radially at the upper section of the limiting ring 4 .

[0022] like Figure 3As shown, the seat body 2 includes a seat shell 21, a transverse axis 22, a lever 23, and an involute cam 24. The involute cam 24 is a disc-shaped cam with an involute outer circumference. The seat shell 21 is a hollow rotating body with an open top. An external thread is provided on the outside of the top of the seat shell 21. The involute cam 24 is arranged inside the seat shell 21. The involute cam 24 is arranged vertically. One end of the transverse axis 22 is keyed to the center hole of the involute cam 24. The transverse axis 22 passes through the seat shell 21. The lever 23 is vertically connected to the other end of the transverse axis 22 and is arranged outside the seat shell 21.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A portable mine tunnel support column, characterized in that: The invention comprises a push rod (1), a seat body (2), a buffer (3) and a limiting ring (4); the push rod (1), the seat body (2), the buffer (3) and the limiting ring (4) are all modular structures; the seat body (2) is a top-drawn shell cylinder with a vertical cam arranged inside; the lower end of the push rod (1) is installed inside the seat body (2); the buffer (3) is arranged between the seat body (2) and the push rod (1); the lower end of the push rod (1) contacts the top position of the cam inside the seat body (2); the limiting ring (4) is arranged at the top mouth of the seat body (2) and is threadedly connected to the seat body (2) to fix the axial position of the push rod (1); The buffer (3) comprises an annular shell (31), a first destruction cavity (32), a second destruction cavity (33), a thickened flexible membrane (34), an anti-drop bottom support (35), an anti-drop cavity (36), a buffer (37) and compressed flexible particles (38); the annular shell (31) is a hollow cylindrical structure; both end surfaces of the annular shell (31) are provided with through holes; the first destruction cavity (32), the second destruction cavity (33) and the anti-drop cavity (36) are sequentially arranged in the annular shell (31) from top to bottom; the first destruction cavity (32) and the second destruction cavity (33) are separated by a brittle thin plate; the second destruction cavity (33) and the anti-drop cavity (36) are spaced apart by a brittle thin plate; ) are separated by a rigid reinforcement plate, the outer wall of the annular shell (31) contacts the inner wall of the upper section of the seat body (2), the first destruction chamber (32), the second destruction chamber (33) and the anti-fall chamber (36) are closed by the thickened flexible membrane (34) at the opening positions in the annular shell (31), the buffer (37) is arranged in the first destruction chamber, the compressed flexible particles (38) are arranged in the second destruction chamber (33), the buffer (37) is an air gelled liquid, the compressed flexible particles (38) are an expansion structure, the second destruction chamber (33) is a vacuum environment, and the anti-fall bottom support (35) is a rubber ring arranged in the anti-fall chamber (36).

2. A portable mine tunnel support column according to claim 1, characterized in that: The limiting ring (4) is a threaded ring with an internal thread at the lower section, and a plurality of threaded holes are evenly arranged radially at the upper section of the limiting ring (4).

3. A portable mine tunnel support column according to claim 1, characterized in that: The seat body (2) comprises a seat shell (21), a transverse axis (22), a lever (23), and an involute cam (24); the involute cam (24) is a disc-shaped cam with an involute outer circumference; the seat shell (21) is a hollow rotating body with an open top; an external thread is arranged on the outside of the top of the seat shell (21); the involute cam (24) is arranged inside the seat shell (21); the involute cam (24) is arranged vertically; one end of the transverse axis (22) is key-connected with the center hole of the involute cam (24); the transverse axis (22) passes through the seat shell (21); and the lever (23) is vertically connected to the other end of the transverse axis (22) and arranged outside the seat shell (21).

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